WO1996017203A1 - Device, method and coupling seal between a flange having at least one tube and a part - Google Patents

Device, method and coupling seal between a flange having at least one tube and a part Download PDF

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Publication number
WO1996017203A1
WO1996017203A1 PCT/FR1995/001556 FR9501556W WO9617203A1 WO 1996017203 A1 WO1996017203 A1 WO 1996017203A1 FR 9501556 W FR9501556 W FR 9501556W WO 9617203 A1 WO9617203 A1 WO 9617203A1
Authority
WO
WIPO (PCT)
Prior art keywords
flange
connection
orifice
tube
plate
Prior art date
Application number
PCT/FR1995/001556
Other languages
French (fr)
Inventor
Daniel Baron
Philippe Sene
Original Assignee
Manuli Automobile France
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR9414179A external-priority patent/FR2727493B1/en
Application filed by Manuli Automobile France filed Critical Manuli Automobile France
Publication of WO1996017203A1 publication Critical patent/WO1996017203A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
    • B60H1/00557—Details of ducts or cables
    • B60H1/00571—Details of ducts or cables of liquid ducts, e.g. for coolant liquids or refrigerants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies

Definitions

  • the present invention relates to a sealed connection device between a flange provided with at least one tube having a connection end, and a part provided with a connection orifice with said end, the connection faces between flange and part being plane and parallel, the device comprising means for clamping the flange on the workpiece.
  • a flange provided with a pipe and a part which can for example be another flange, a dehydrator, a condenser, a pressure reducer or a compressor.
  • the present invention aims to provide a device, a method and a seal better meeting those previously known than the requirements of the practice, in particular in that it allows a simpler assembly, easy to implement, which generates less risk of forgetting or damaging the seal by the fitter, in that it guarantees a uniform crushing of said seal and in that it allows better resistance to vibrations in operation, all these elements combined making it possible to obtain the desired result, namely better sealing of the connection device.
  • the present invention essentially provides a sealed connection device between a flange provided with at least one tube having a connection end, and a part provided a connection orifice with said end, the connection faces between flange and part being flat and parallel, the device comprising means for clamping the flange on the part, characterized in that it further comprises a composite seal located between the two connection faces, comprising a plate of constant thickness pierced right through with at least one orifice, the internal edge of which is secured to a ring of elastomeric material of constant cross section of greater thickness, at the free state, that the plate, said ring being introduced with friction on said connection end and having at least two compression lines with the plane of each of said connection faces.
  • ring with two lines, or double line, of compression is meant a ring having at its periphery, on either side of the plane of the plate, in planes parallel to said plate, for example symmetrical with respect to said plate, two circular lines, or circular surfaces of small width, concentric with respect to the central axis of the joint perpendicular to the plane of the plate, namely two symmetrical internal lines and two symmetrical external lines suitable for cooperating with the planar faces.
  • the lines provide the first contact with the flat, parallel faces, facing each other during tightening, then are subjected to the maximum compression in progress and after tightening of the two connecting faces against each other.
  • recourse is had to one and / or the other of the following arrangements:
  • the ring is double compression line and has a cross section substantially in the form of a horizontal eight extending parallel to the plane of the plate;
  • the flange comprises at least two tubes and the seal comprises at least two orifices each provided with a ring of elastomeric material with double compression line respectively introduced on each of said tubes;
  • the "joint further comprises at least one orifice for the passage of a fixing screw
  • the passage orifice comprises an annular lip-shaped anointed point directed towards the interior of the orifice in the plane of the orifice;
  • the device further comprises a plastic or equivalent element, for positioning and solida ⁇ sation between the flange and the part before final tightening, said element comprising means for fixing said element on the flange, and quick fixing means by snap-fastening or equivalent, of the element thus secured to the flange on the part.
  • equivalent is meant in particular and for example a flexible metallic material capable of deforming and returning in place elastically, in resuming in particular its initial configuration after deformation for latching;
  • the tube is fixed on said flange on either side of the orifice by folding the wall of said tube on itself in the longitudinal direction of the tube , the connection face located on the side of the part being provided with an annular recess for receiving said corresponding fold.
  • the outer face of the fold, located on the side of the joint, is then located in the plane of said connecting face of the part.
  • the flange is provided with at least one orifice drilled right through, open on the side and in which is inserted a sleeve for passage of the tube to which it is fixed by folding the wall of said tube on itself in the longitudinal direction of the tube, said sleeve being provided with a flange on the side of the part with respect to the flange, the connection face of said flange situated on the side of the part being provided with an annular recess for receiving said corresponding fold.
  • connection face is located in the plane of said connection face.
  • the plastic element has a flat central wall inserted between the connection faces of the flange and the part;
  • the plastic element has a substantially U-shaped cross section comprising longitudinal lateral protuberances inserted laterally between the connection faces of the flange and the part; the flange comprises two tubes and the part two opposite orifices, and the means for clamping the flange on the part comprise a screw passing through the flange and the central wall of the element, right through, for fixing with said piece, the screw being held by said plastic element. If the composite seals are secured to each other by their respective plates, the screw can then also be screwed into the seal itself, the element not in this case having a flat central wall.
  • the invention also relates to a method of mounting or manufacturing a device of the type described above. It also relates to a clean seal to be mounted on such a device.
  • FIG. 1 shows in section a first embodiment of the device according to the invention, for connection between two flanges.
  • Figure 2 is a top view of Figure 1.
  • - Figure 3 is a cross-sectional view of the plastic or equivalent element of the device of Figure 1.
  • - Figure 3A is a cross-sectional view of the plastic or equivalent element of the device according to another embodiment.
  • Figure 4 is a sectional view of a composite joint with two orifices belonging to a device for connecting a flange to two tubes, according to another embodiment of the invention, usable with the element of Figure 3A .
  • FIG. 4A is a sectional view of two composite seals according to the invention usable with the element of FIG. 3.
  • Figure 5 is a top view of the seal of Figure 4.
  • Figure 5A is a top view of the composite joints of Figure 4A.
  • FIG. 6 is a partial sectional view, along VI-VI, of the elastomer ring of the seal of Figures 1, 4 or 4A.
  • FIG. 7 is a partial view, in section, along VII-VII of the central orifice of the joint in FIG. 5.
  • FIG. 8 is a top view of another embodiment of a seal according to the invention for connection to a single tube.
  • FIG. 9 is a sectional view of a seal for a device according to another embodiment of the invention with conical washer.
  • Figure 10 is a sectional view, on a large scale, partial, of the elastomer ring of a seal of the type of that of Figure 9 having a plate elastically deforming in compression.
  • FIG. 11 shows schematically in top view and in side view another embodiment of a flange with sleeve usable with the invention.
  • Figure 12 is a sectional view of a flange with sleeve according to another embodiment of one invention.
  • Figures 1 and 2 show a sealed connection device 1 between a first metal flange 2, for example steel, and a part constituted by a second metal flange 3, for example of the same configuration as the first flange 2, the connection faces 4 and 5 between flanges being flat and parallel.
  • the flange 2 is for example substantially parallelepipedal or of substantially ellipsoidal or oval section parallel to the plane 6 of connection between flanges.
  • this anti-rotation can be carried out by gluing.
  • the tubes 9 and 10 each have a connection end 9 'and 10' extending beyond the face 4 over a determined distance, and immobilized in the axial direction 11, perpendicular to the connection plane 6, by folds 12 , 13 of their respective wall, on either side of the flange, also called double frippage in the language of a person skilled in the art.
  • the connection face 4, located on the side of the connection is provided with two annular recesses 14 and 15 corresponding to each orifice 7 and 8, for receiving the folds 13 of the tubes, allowing continuity or substantially continuity of the flatness of said face 4, thereby erasing the protuberances due to folds in the surface of the flange.
  • the flange also comprises a central cylindrical orifice 18 for the passage of a screw or a fixing bolt (not shown) of the flange 2 on the flange 3.
  • the flange 3 has two orifices 19 and 20 in screw with orifices 7 and 8, each provided with a cylindrical tube, for example also made of aluminum, 21 and 22.
  • the tubes are fixed to the flange 3 in the same way as the tubes 9 and 10 with the flange 2, annular recesses 23 and annular shoulders 24 being provided to receive or support the corresponding folds 25 and 26. More precisely, the tubes 21 and 22 are each terminated by the folds 25 situated on the side of the connection face 5 so that the end of said tubes comes as close as possible to the surface of said face 5, the internal diameter of the tubes 21 and 22 corresponding to the external diameters of the ends 9 ′ and 10 ′ which are frictionally introduced into said tubes.
  • the flange 3 and the tubes 21, 22 are replaced by a block with holes coming to cooperate directly with the tubes 9 and 10.
  • This block comprises a tapped center hole and grooves for holding the element in material plastic.
  • a central orifice 3 ′ for fixing, for example threaded, is provided opposite the orifice 18 of the flange 2.
  • the device also comprises two composite seals 27 and 28 located between the two connecting faces 4 and 5, respectively threaded on the ends 9 'and 10' of the tubes 9 and 10.
  • Each joint has a metal plate 29, 30, for example, in the shape of a truncated cone washer, thus giving elasticity in axial compression, pierced right through with an orifice the internal edge of which is integral with a ring.
  • the attachment between the plate and the elastomer material is for example by overmolding.
  • the elastomer may be a butyl chain elastomer or HNBR.
  • the elastomer ring 31, 32 is formed by a special profile seal which will be more particularly described with reference to FIG. 6. This special profile seal allows a double tube / tube sealing with two separate compression lines, on either side of the cylindrical wall of the recesses 14 and 15 of the junction face 4 on the one hand, and of the recesses of the junction face 5 on the other hand .
  • the external sealing line of each joint is therefore a support on the junction faces of the parts 2 and 3, and the internal sealing line on the external faces of the folds 13 and 23 of the tubes 9, 10 and 21, 22, located in the same plane or substantially in the same plane as the corresponding junction faces, which allows excellent sealing.
  • the profile of the joint also ensures optimum compression, the protruding volumes moving in the free volumes, filling 95% of the free space between the plates
  • the device further comprises an element 33 (see FIG. 3), made of plastic or equivalent material, for positioning and securing the flange 2 to the flange 3.
  • the element 33 here consists of a section piece in longitudinal section substantially in the form of an H, comprising a central wall 34 (the transverse bar of the H) substantially rectangular, inserted between the connection faces 4 and 5, and moreover thinner than the plates 29 and 30 of the joints between which it is inserted transversely.
  • the wall 34 is moreover pierced right through in its center with an orifice 35, for example threaded, for passage and for holding the bolt for fixing the flanges together.
  • the element has two longitudinal walls
  • the walls 36 are terminated in the upper part and in the lower part, by transverse protuberances
  • FIG. 3A shows another embodiment of an element 33 ′ of U-shaped cross section or substantially U-shaped, comprising longitudinal lateral protrusions or bars 34 ′ inserted laterally between the faces 4 and 5 for connecting the flange 2 and the part 3 and also having a profile of the same type as that of the element 33.
  • FIGS. 4 and 5 show another embodiment of seal 42 according to the invention for connection between flange and part, provided with a flat metal plate 43 of constant thickness, pierced right through with two orifices 44 and 45, each comprising a special double ring 46 (cf. FIG. 6).
  • the ring 46 molded onto the plate 43 has a constant cross section in the form of a horizontal 8 extending in the plane or substantially in the plane of the plate, or in the form of a bow tie formed by two substantially cylindrical toroids 47 of diameter d, or of oval section of maximum transverse dimension d.
  • the dimension d is greater than the thickness of the plate, for example from 1.1 times to 1.8 times greater, and in particular greater than or equal to around 1.5 times said thickness.
  • the toroids are connected together by a cord or circular ring 48 of thinner thickness than the wall 43 molded or cast in the mass, said seal extending on either side of the upper faces and lower of the plate over an equivalent distance, in the free state, for example equal to a few millimeters.
  • the ring is therefore double compression line, that is to say that it has on either side of the central plane 48 'of the ring two lines 47' and 47 "'or surfaces of small width, concentric, respectively symmetrical with respect to said plane 48 ', each corresponding to the most distant external limit, with respect to the central plane 48' of the ring, in line with the median diameter of the torus concerned or equivalent.
  • FIGS. 4A and 5A show, for their part, two seals 42a and 42b independent of each other and capable of being used with the element of FIG. 3A.
  • Each joint comprises a circular annular plate 43a and 43b, provided internally with a sealing ring 46a and 46b of the type described above.
  • FIG. 8 shows another embodiment of a composite joint 52 according to the invention comprising a substantially triangular plate 53 provided with an orifice 54 piercing the plate right through, for connection, comprising an elastomer ring 55 with double sealing line of the type described above, and a through hole 56 of the bolt for fixing the flange to the part.
  • the seal 57 according to the invention comprises a double elastomer ring 58 of the type more particularly described here, fixed to a washer 59 in the form of a truncated cone or portion of an annular cup, allowing elasticity of the joint after tightening, for example requiring a flattening pressure of 500 Kgf.
  • FIG. 11 shows a flange 60 provided with two orifices 61 and 62, one of which (62) having a lateral opening 63 directed towards the outside of the flange.
  • the orifice 62 comprises a cylindrical sleeve 64 for passage of the tube 65, the sleeve being locked in rotation for example by indexing (not shown) in the orifice 62.
  • the tube 65 is fixed to the sleeve by bending 66 of the wall of said tube on itself in the longitudinal direction of the tube, the sleeve 64 being provided with a flange 67 on the side of the part with respect to the flange, the face 68 of connection of said flange located on the side of the part being provided with an annular recess 69 for receiving said corresponding fold.
  • the tube 65 also comprises an end 70 extending beyond the flange towards the part 3 and on which is threaded the seal 71 of the type described with reference to FIG. 4A.
  • the two seals 27 and 28 are threaded onto the end pieces 9 'and 10' with which they remain integral by friction during the following manipulations.
  • the bolt is introduced and provided on the plastic element 33 (or the plate 43 of the seal 42, in the case of a one-part seal).
  • the plastic element is then snapped onto the flange 2, then the whole is fixed while snapping the element thus provided with the flange 2, onto the flange 3.
  • the part therefore receives the flange assembly with seal and screw, the operator only having to screw the latter without risking losing the seal or damaging it.
  • the metal-to-metal contact, and the crushing of the elastomer parts guarantee sealing with controlled compression thanks to the constant thickness of the plate (for example steel) of the joint.
  • the double seal in the form of a horizontal 8 crushed in a controlled manner provides, on the one hand, the seal between the ends 9 'or 10' and the flange 3, and on the other hand part, and simultaneously, the seal between this same end and the folds 13 and 23 of the corresponding aluminum tube.
  • the present invention also relates to the variants where the ring with double compression line has surface toroids with cut sides, where there are more than two lines concentric sealing, for example three, that where the ring ends inwards in the central plane of the joint, by a circular tongue or lip, and those where at least two tubes being provided on the flange, the faces of always parallel connection between them, the flange and the part, respectively have a symmetrical recess with respect to the median plane of connection, of a tube with respect to the other, the thickness of the plates and of the opposite joints of their respective tube then being different.
  • the ring with double compression line has surface toroids with cut sides, where there are more than two lines concentric sealing, for example three, that where the ring ends inwards in the central plane of the joint, by a circular tongue or lip, and those where at least two tubes being provided on the flange, the faces of always parallel connection between them, the flange and the part, respectively have a symmetrical recess with respect to the median plane of connection

Abstract

A device (1), a method and a coupling seal between a flange (2) having at least one tube (9, 10) with a coupling end (9', 10'), and a part (3) provided with an opening (19, 20) connectable to said end. The seal (27, 28) is a composite seal located between the two coupling surfaces (4, 5) and includes a plate (29, 30) of constant thickness having a through-hole secured at its inner edge to an elastomeric ring (31, 32) which is, when free, thicker than the plate and has a constant cross-section and at least two lines of compression with the plane of each of the coupling surfaces (4, 5).

Description

DISPOSITIF, PROCEDE ET JOINT DE RACCORDEMENT ETANCHE ENTRE UNE BRIDE MUNIE D'AU MOINS UN TUBE ET UNE PIECE.DEVICE, METHOD AND SEALED CONNECTION BETWEEN A FLANGE PROVIDED WITH AT LEAST ONE TUBE AND A PART.
La présente invention concerne un dispositif de raccordement étanche entre une bride munie d'au moins un tube présentant une extrémité de raccordement, et une pièce munie d'un orifice de connexion avec ladite extrémité, les faces de raccordement entre bride et pièce étant planes et parallèles, le dispositif comportant des moyens de serrage de la bride sur la pièce.The present invention relates to a sealed connection device between a flange provided with at least one tube having a connection end, and a part provided with a connection orifice with said end, the connection faces between flange and part being plane and parallel, the device comprising means for clamping the flange on the workpiece.
Elle concerne également un procédé de raccordement et un joint à profil spécial mis en oeuvre avec un tel dispositif.It also relates to a connection method and a special profile joint implemented with such a device.
Elle trouve une application particulièrement importante bien que non exclusive dans le domaine des raccordements de circuits refroidisseurs, de circuits de climatisation et/ou de systèmes de direction assistée de véhicules automobiles.It finds a particularly important although not exclusive application in the field of connections for cooling circuits, air conditioning circuits and / or power steering systems of motor vehicles.
On connaît déjà des systèmes de raccordement étanche et amovible entre une bride munie d'un tuyau et une pièce, qui peut être par exemple une autre bride, un déshydrateur, un condenseur, un détendeur ou un compresseur.Systems of leaktight and removable connection are already known between a flange provided with a pipe and a part, which can for example be another flange, a dehydrator, a condenser, a pressure reducer or a compressor.
Les systèmes connus présentent des inconvénients car ils ne garantissent pas toujours une bonne étanchéité.Known systems have drawbacks because they do not always guarantee a good seal.
Plusieurs facteurs expliquent ces inconvénients. II s'agit tout d'abord de facteurs liés aux erreurs et défaillances humaines lors du montage. C'est le cas notamment lorsque le monteur du dispositif oublie de mettre le joint, ou encore lorsqu'il l'endommage par exemple du fait des difficultés liées à la nécessité pour le monteur de maintenir en place simultanément la bride à fixer et l'appareil (visseuse) de fixation.Several factors explain these drawbacks. These are first of all factors linked to human errors and failures during assembly. This is particularly the case when the assembler of the device forgets to put the seal, or even when he damages it, for example due to the difficulties linked to the need for the assembler to simultaneously hold in place the flange to be fixed and the fixing device (screwdriver).
Des facteurs liés aux dispositifs eux même existent ensuite.Factors related to the devices themselves then exist.
En effet, les documents de l'art antérieur décrivent essentiellement des joints toriques dont on ne peut garantir la valeur de compression de façon fiable compte tenu des cotes de tolérance pour l'usinage des pièces.In fact, the documents of the prior art essentially describe O-rings whose compression value cannot be guaranteed reliably taking into account the tolerance dimensions for machining the parts.
De plus, les dispositifs connus ont tendance à perdre leur étanchéité en fonctionnement du fait des vibrations.In addition, known devices tend to lose their sealing in operation due to vibrations.
La présente invention vise à fournir un dispositif, un procédé et un joint d'étanchéité répondant mieux que ceux antérieurement connus aux exigences de la pratique, notamment en ce qu'elle permet un montage plus simple, aisé à mettre en oeuvre, ce qui génère moins de risque d'oubli ou d'endommagement du joint par le monteur, en ce qu'elle garantit un écrasement homogène du dit joint et en ce qu'elle permet une meilleure tenue aux vibrations en fonctionnement, tous ces éléments combinés permettant d'obtenir le résultat recherché, à savoir une meilleure étanchéité du dispositif de raccordement . Dans ce but la présente invention propose essentiellement un dispositif de raccordement étanche entre une bride munie d'au moins un tube présentant une extrémité de raccordement, et une pièce munie d'un orifice de connexion avec ladite extrémité, les faces de raccordement entre bride et pièce étant planes et parallèles, le dispositif comportant des moyens de serrage de la bride sur la pièce, caractérisé en ce qu'il comporte de plus un joint composite situé entre les deux faces de raccordement, comprenant une plaque d'épaisseur constante percée de part en part d'au moins un orifice dont le bord interne est solidaire d'un anneau en matériau élastomère de section transversale constante de plus forte épaisseur, à l'état libre, que la plaque , ledit anneau étant introduit à frottement sur ladite extrémité de raccordement et présentant au moins deux lignes de compression avec le plan de chacune desdites faces de raccordement.The present invention aims to provide a device, a method and a seal better meeting those previously known than the requirements of the practice, in particular in that it allows a simpler assembly, easy to implement, which generates less risk of forgetting or damaging the seal by the fitter, in that it guarantees a uniform crushing of said seal and in that it allows better resistance to vibrations in operation, all these elements combined making it possible to obtain the desired result, namely better sealing of the connection device. To this end, the present invention essentially provides a sealed connection device between a flange provided with at least one tube having a connection end, and a part provided a connection orifice with said end, the connection faces between flange and part being flat and parallel, the device comprising means for clamping the flange on the part, characterized in that it further comprises a composite seal located between the two connection faces, comprising a plate of constant thickness pierced right through with at least one orifice, the internal edge of which is secured to a ring of elastomeric material of constant cross section of greater thickness, at the free state, that the plate, said ring being introduced with friction on said connection end and having at least two compression lines with the plane of each of said connection faces.
Par anneau à deux lignes, ou double ligne, de compression, il faut entendre un anneau présentant à sa périphérie, de part et d'autre du plan de la plaque, dans des plans parallèles à ladite plaque, par exemple symétriques par rapport à ladite plaque, deux lignes circulaires, ou surfaces circulaires de faible largeur, concentriques par rapport à l'axe central du joint perpendiculaire au plan de la plaque, à savoir deux lignes internes symétriques et deux lignes externes symétriques propres à coopérer avec les faces planes.By ring with two lines, or double line, of compression, is meant a ring having at its periphery, on either side of the plane of the plate, in planes parallel to said plate, for example symmetrical with respect to said plate, two circular lines, or circular surfaces of small width, concentric with respect to the central axis of the joint perpendicular to the plane of the plate, namely two symmetrical internal lines and two symmetrical external lines suitable for cooperating with the planar faces.
Plus précisément, les lignes assurent le premier contact avec les faces planes, parallèles, en vis à vis lors du serrage, puis sont soumises à la compression maximum en cours et après serrage des deux faces de raccordement l'une contre l'autre. Dans des modes de réalisation avantageux, on a de plus recours a l'une et/ou à l'autre des dispositions suivantes :More specifically, the lines provide the first contact with the flat, parallel faces, facing each other during tightening, then are subjected to the maximum compression in progress and after tightening of the two connecting faces against each other. In advantageous embodiments, recourse is had to one and / or the other of the following arrangements:
L'anneau est à double ligne de compression et présente une section transversale sensiblement en forme de huit horizontal s 'étendant parallèlement au plan de la plaque ;The ring is double compression line and has a cross section substantially in the form of a horizontal eight extending parallel to the plane of the plate;
- la plaque d'épaisseur constante et constituée par une rondelle conique agencée pour se déformer de façon élastique lors d'une compression de ladite plaque dans le sens axial du cône ;- The plate of constant thickness and constituted by a conical washer arranged to deform elastically during compression of said plate in the axial direction of the cone;
- la bride comporte au moins deux tubes et le joint comporte au moins deux orifices chacun muni d'un anneau en matière élastomère a double ligne de compression respectivement introduits sur chacun desdits tubes ;- The flange comprises at least two tubes and the seal comprises at least two orifices each provided with a ring of elastomeric material with double compression line respectively introduced on each of said tubes;
- le "joint comporte de plus au moins un orifice de passage d'une vis de fixation ;- The "joint further comprises at least one orifice for the passage of a fixing screw;
- l'orifice de passage comporte un oint annulaire en forme de lèvre dirigée vers l'intérieur de l'orifice dans le plan de l'orifice ; le dispositif comporte de plus un élément en matière plastique ou équivalent, de positionnement et de solidaπsation entre la bride et la pièce avant serrage définitif, ledit élément comprenant des moyens de fixation dudit élément sur la bride, et des moyens de fixation rapide par encliquage ou équivalent, de l'élément ainsi solidaire de la bride sur la pièce. Par équivalent on entend notamment et par exemple une matière métallique souple susceptible de se déformer et de revenir en place elastiquement, en reprenant notamment sa configuration initiale après déformation pour encliquage ;the passage orifice comprises an annular lip-shaped anointed point directed towards the interior of the orifice in the plane of the orifice; the device further comprises a plastic or equivalent element, for positioning and solidaπsation between the flange and the part before final tightening, said element comprising means for fixing said element on the flange, and quick fixing means by snap-fastening or equivalent, of the element thus secured to the flange on the part. By equivalent is meant in particular and for example a flexible metallic material capable of deforming and returning in place elastically, in resuming in particular its initial configuration after deformation for latching;
- la bride étant munie d'au moins un orifice percé de part en part, le tube est fixé sur ladite bride de part et d'autre de l'orifice par pliure de la paroi dudit tube sur elle même dans le sens longitudinal du tube, la face de raccordement située du coté de la pièce étant munie d'un évidement annulaire de réception de ladite pliure correspondante. La face externe de la pliure, située du côté du joint, est alors située dans le plan de ladite face de raccordement de la pièce.- The flange being provided with at least one orifice drilled right through, the tube is fixed on said flange on either side of the orifice by folding the wall of said tube on itself in the longitudinal direction of the tube , the connection face located on the side of the part being provided with an annular recess for receiving said corresponding fold. The outer face of the fold, located on the side of the joint, is then located in the plane of said connecting face of the part.
- la bride est munie d'au moins un orifice percé de part en part, ouvert sur le coté et dans lequel est inséré un manchon de passage du tube auquel il est fixé par pliure de la paroi dudit tube sur elle même dans le sens longitudinal du tube, ledit manchon étant muni d'une collerette du coté de la pièce par rapport à la bride, la face de raccordement de ladite collerette située du coté de la pièce étant munie d'un évidement annulaire de réception de ladite pliure correspondante.- The flange is provided with at least one orifice drilled right through, open on the side and in which is inserted a sleeve for passage of the tube to which it is fixed by folding the wall of said tube on itself in the longitudinal direction of the tube, said sleeve being provided with a flange on the side of the part with respect to the flange, the connection face of said flange situated on the side of the part being provided with an annular recess for receiving said corresponding fold.
Ici encore, la face externe de la pliure est située dans le plan de ladite face de raccordement. - l'élément en matière plastique comporte une paroi centrale plane insérée entre les faces de raccordement de la bride et de la pièce;Here again, the external face of the fold is located in the plane of said connection face. - The plastic element has a flat central wall inserted between the connection faces of the flange and the part;
- l'élément en matière plastique présente une section transversale sensiblement en forme de U comportant des excroissances latérales longitudinales insérées latéralement entre les faces de raccordement de la bride et de la pièce; la bride comporte deux tubes et la pièce deux orifices en vis à vis, et les moyens de serrage de la bride sur la pièce comprennent une vis traversant la bride et la paroi centrale de l'élément, de part en part, pour fixation avec ladite pièce, la vis étant maintenue par ledit élément en matière plastique. Si les joints composites sont solidaires l'un de l'autre par leurs plaques respectives, la vis peut alors également être vissée dans le joint lui même, l'élément ne comportant pas dans ce cas de paroi centrale plane.- The plastic element has a substantially U-shaped cross section comprising longitudinal lateral protuberances inserted laterally between the connection faces of the flange and the part; the flange comprises two tubes and the part two opposite orifices, and the means for clamping the flange on the part comprise a screw passing through the flange and the central wall of the element, right through, for fixing with said piece, the screw being held by said plastic element. If the composite seals are secured to each other by their respective plates, the screw can then also be screwed into the seal itself, the element not in this case having a flat central wall.
L'invention concerne également un procède de montage ou de fabrication d'un dispositif du type décrit ci-dessus. Elle concerne également un joint propre à être monté sur un tel dispositif.The invention also relates to a method of mounting or manufacturing a device of the type described above. It also relates to a clean seal to be mounted on such a device.
La présente invention sera mieux comprise à la lecture de la description qui suit de modes de réalisation particuliers donnés a titre d'exemples non limitatifs.The present invention will be better understood on reading the following description of particular embodiments given by way of nonlimiting examples.
Elle se réfère aux dessins qui l'accompagnent dans lesquelles :It refers to the accompanying drawings in which:
- La figure 1 montre en coupe un premier mode de réalisation du dispositif selon l'invention, pour raccordement entre deux brides.- Figure 1 shows in section a first embodiment of the device according to the invention, for connection between two flanges.
- La figure 2 est une vue de dessus de la figure 1.- Figure 2 is a top view of Figure 1.
- La figure 3 est une vue en coupe transversale de l'élément en matière plastique ou équivalent du dispositif de la figure 1. - La figure 3A est une vue en coupe transversale de l'élément en matière plastique ou équivalent du dispositif selon un autre mode de réalisation.- Figure 3 is a cross-sectional view of the plastic or equivalent element of the device of Figure 1. - Figure 3A is a cross-sectional view of the plastic or equivalent element of the device according to another embodiment.
FEUILLE DE REMPLACEMENT (RÈGLΞ 26) La figure 4 est une vue en coupe d'un joint composite à deux orifices appartenant à un dispositif pour raccordement d'une bride à deux tubes, selon un autre mode de réalisation de l'invention, utilisable avec l'élément de la figure 3A.SUBSTITUTE SHEET (RULE 26) Figure 4 is a sectional view of a composite joint with two orifices belonging to a device for connecting a flange to two tubes, according to another embodiment of the invention, usable with the element of Figure 3A .
- La figure 4A est une vue en coupe de deux joints composites selon l'invention utilisables avec l'élément de la figure 3.FIG. 4A is a sectional view of two composite seals according to the invention usable with the element of FIG. 3.
- La figure 5 est une vue de dessus du joint de la figure 4.- Figure 5 is a top view of the seal of Figure 4.
- La figure 5A est une vue de dessus des joints composites de la figure 4A.- Figure 5A is a top view of the composite joints of Figure 4A.
- La figure 6 est une vue en coupe, partielle, selon VI-VI, de l'anneau en élastomère du joint des figures 1, 4 ou 4A.- Figure 6 is a partial sectional view, along VI-VI, of the elastomer ring of the seal of Figures 1, 4 or 4A.
- La figure 7 est une vue partielle, en coupe, selon VII-VII de l'orifice central du joint de la figure 5.FIG. 7 is a partial view, in section, along VII-VII of the central orifice of the joint in FIG. 5.
- La figure 8 est une vue de dessus d'un autre mode de réalisation d'un joint selon l'invention pour raccordement a un seul tube.- Figure 8 is a top view of another embodiment of a seal according to the invention for connection to a single tube.
- La figure 9 est une vue en coupe d'un joint pour dispositif selon un autre mode de réalisation de l'invention avec rondelle conique.- Figure 9 is a sectional view of a seal for a device according to another embodiment of the invention with conical washer.
La figure 10 est une vue en coupe, a grande échelle, partielle, de l'anneau en élastomère d'un joint du type de celui de la figure 9 comportant une plaque se déformant élastiquement en compression.Figure 10 is a sectional view, on a large scale, partial, of the elastomer ring of a seal of the type of that of Figure 9 having a plate elastically deforming in compression.
- La figure 11 montre schematiquement en vue de dessus et en vue de côté un autre mode de réalisation d'une bride avec manchon utilisable avec l'invention.- Figure 11 shows schematically in top view and in side view another embodiment of a flange with sleeve usable with the invention.
- La figure 12 est une vue en coupe d'une bride avec manchon selon un autre mode de réalisation de 1 ' invention. Les figures 1 et 2 montrent un dispositif 1 de raccordement étanche entre une première bride métallique 2, par exemple en acier, et une pièce constituée par une seconde bride métallique 3, par exemple de même configuration que la première bride 2, les faces de raccordement 4 et 5 entre brides étant planes et parallèles.- Figure 12 is a sectional view of a flange with sleeve according to another embodiment of one invention. Figures 1 and 2 show a sealed connection device 1 between a first metal flange 2, for example steel, and a part constituted by a second metal flange 3, for example of the same configuration as the first flange 2, the connection faces 4 and 5 between flanges being flat and parallel.
La bride 2 est par exemple sensiblement parallèlépipèdique ou de section sensiblement ellipsoïdale ou ovale parallèlement au plan 6 de raccordement entre brides.The flange 2 is for example substantially parallelepipedal or of substantially ellipsoidal or oval section parallel to the plane 6 of connection between flanges.
Elle comporte deux orifices cylindriques 7 et 8, crantés intérieurement de façon connue en elle même, et traversant la bride 2 de part en part, perpendiculairement au plan 6, muni chacun d'un tube, respectivement 9 et 10, par exemple en alliage d'aluminium, de diamètre égal ou sensiblement égal au diamètre interne de l'orifice correspondant avec lequel il coopère en force, chaque tube étant ainsi immobilisé en rotation par rapport à la bride grâce aux crans intérieurs dans lesquels la matière des tubes pénètre.It comprises two cylindrical orifices 7 and 8, internally notched in a manner known per se, and passing through the flange 2 right through, perpendicular to the plane 6, each provided with a tube, respectively 9 and 10, for example of alloy d aluminum, of diameter equal to or substantially equal to the internal diameter of the corresponding orifice with which it cooperates in force, each tube thus being immobilized in rotation relative to the flange by virtue of the internal notches in which the material of the tubes penetrates.
Dans un autre mode de réalisation cette anti¬ rotation peut être réalisée par collage. Les tubes 9 et 10 comportent chacun une extrémité de connexion 9' et 10' s 'étendant au-delà de la face 4 sur une distance déterminée, et immobilisés dans le sens axial 11, perpendiculaire au plan 6 de raccordement, par des pliures 12, 13 de leur paroi respective, de part et d'autre de la bride, encore appelé double frippage dans le langage de l'homme du métier. La face de raccordement 4, située du coté du raccordement, est munie de deux évidements annulaires 14 et 15 correspondant à chaque orifice 7 et 8, de réception des pliures 13 des tubes, permettant une continuité ou sensiblement une continuité de la planéité de ladite face 4, en effaçant ainsi les excroissances dues aux pliures dans la surface de la bride.In another embodiment, this anti-rotation can be carried out by gluing. The tubes 9 and 10 each have a connection end 9 'and 10' extending beyond the face 4 over a determined distance, and immobilized in the axial direction 11, perpendicular to the connection plane 6, by folds 12 , 13 of their respective wall, on either side of the flange, also called double frippage in the language of a person skilled in the art. The connection face 4, located on the side of the connection, is provided with two annular recesses 14 and 15 corresponding to each orifice 7 and 8, for receiving the folds 13 of the tubes, allowing continuity or substantially continuity of the flatness of said face 4, thereby erasing the protuberances due to folds in the surface of the flange.
Il est par contre, et par exemple, prévu de l'autre coté de la face externe de la bride, des épaulements cylindriques 16 autour des orifices 7 et 8, sur lesquels les pliures 12 des tubes correspondants viennent en appui, ce qui autorise un excellent blocage axial. Les pliures sont par exemple obtenues par emboutissage, la compression axiale faisant par ailleurs s'écarter radialement la partie centrale 17 des tubes entre les pliures 12 et 13 le métal pénétrant alors les crans ou cannelures internes aux orifices.It is on the other hand, and for example, provided on the other side of the external face of the flange, cylindrical shoulders 16 around the orifices 7 and 8, on which the folds 12 of the corresponding tubes come to bear, which allows a excellent axial locking. The folds are, for example, obtained by stamping, the axial compression also causing the central portion 17 of the tubes to move away radially between the folds 12 and 13, the metal then penetrating the notches or grooves internal to the orifices.
La bride comporte par ailleurs un orifice cylindrique central 18 de passage d'une vis ou d'un boulon de fixation (non représenté) de la bride 2 sur la bride 3. La bride 3 comporte quand à elle deux orifices 19 et 20 en vis à vis des orifices 7 et 8, munis chacun d'un tube cylindrique, par exemple également en aluminium, 21 et 22.The flange also comprises a central cylindrical orifice 18 for the passage of a screw or a fixing bolt (not shown) of the flange 2 on the flange 3. The flange 3 has two orifices 19 and 20 in screw with orifices 7 and 8, each provided with a cylindrical tube, for example also made of aluminum, 21 and 22.
Les tubes sont fixés à la bride 3 de façon identique aux tubes 9 et 10 avec la bride 2, des évidements annulaires 23 et des épaulements annulaires 24 étant prévus pour recevoir ou appuyer les pliures 25 et 26 correspondantes. Plus précisément les tubes 21 et 22 sont chacun terminés par les plis 25 situes du coté de la face 5 de raccordement de façon a ce que l'extrémité desdits tubes viennent au maximum araser la surface de la dite face 5, le diamètre interne des tubes 21 et 22 correspondant aux diamètres externes des extrémités 9' et 10' qui sont introduites à frottement dans lesdits tubes.The tubes are fixed to the flange 3 in the same way as the tubes 9 and 10 with the flange 2, annular recesses 23 and annular shoulders 24 being provided to receive or support the corresponding folds 25 and 26. More precisely, the tubes 21 and 22 are each terminated by the folds 25 situated on the side of the connection face 5 so that the end of said tubes comes as close as possible to the surface of said face 5, the internal diameter of the tubes 21 and 22 corresponding to the external diameters of the ends 9 ′ and 10 ′ which are frictionally introduced into said tubes.
Dans un mode de réalisation, la bride 3 et les tubes 21, 22 sont remplacés par un bloc à trous venant coopérer directement avec les tubes 9 et 10. Ce bloc comprend un trou centre taraudé et des rainures de maintien de l'élément en matière plastique. Enfin un orifice central 3' de fixation, par exemple fileté, est prévu en vis à vis de l'orifice 18 de la bride 2.In one embodiment, the flange 3 and the tubes 21, 22 are replaced by a block with holes coming to cooperate directly with the tubes 9 and 10. This block comprises a tapped center hole and grooves for holding the element in material plastic. Finally a central orifice 3 ′ for fixing, for example threaded, is provided opposite the orifice 18 of the flange 2.
Selon le mode de réalisation de l'invention plus particulièrement décrit ici, le dispositif comporte par ailleurs deux joints composites 27 et 28 situes entre les deux faces 4 et 5 de raccordement, respectivement enfiles sur les extrémités 9' et 10' des tubes 9 et 10.According to the embodiment of the invention more particularly described here, the device also comprises two composite seals 27 and 28 located between the two connecting faces 4 and 5, respectively threaded on the ends 9 'and 10' of the tubes 9 and 10.
Chaque joint comporte une plaque 29, 30, métallique, par exemple, en forme de rondelle en tronc de cône, conférant ainsi une élasticité en compression axiale, percée de part en part d'un orifice dont le bord interne est solidaire d'un anneau 31, 32 en matériau élastomère de plus forte épaisseur, à l'état libre, que la plaque, ledit anneau étant introduit à frottement sur l'extrémité 9', 10' correspondante du tube concerné. La fixation entre la plaque et le matériau en élastomère se fait par exemple par surmoulage.Each joint has a metal plate 29, 30, for example, in the shape of a truncated cone washer, thus giving elasticity in axial compression, pierced right through with an orifice the internal edge of which is integral with a ring. 31, 32 of elastomer material of greater thickness, in the free state, than the plate, said ring being introduced by friction on the corresponding end 9 ′, 10 ′ of the tube concerned. The attachment between the plate and the elastomer material is for example by overmolding.
L'élastomère peut-être en élastomère à chaîne de butyle ou de HNBR. Dans le mode de réalisation de l'invention plus particulièrement décrit ici l'anneau en élastomère 31, 32 est formé d'un joint à profil spécial qui sera plus particulièrement décrit en référence à la figure 6. Ce joint à profil spécial permet un double étanchéité tube/tube avec deux lignes de compression distinctes, de part et d'autre de la paroi cylindrique des évidements 14 et 15 de la face de jonction 4 d'une part, et des évidements de la face de jonction 5 d'autre part.The elastomer may be a butyl chain elastomer or HNBR. In the embodiment of the invention more particularly described here the elastomer ring 31, 32 is formed by a special profile seal which will be more particularly described with reference to FIG. 6. This special profile seal allows a double tube / tube sealing with two separate compression lines, on either side of the cylindrical wall of the recesses 14 and 15 of the junction face 4 on the one hand, and of the recesses of the junction face 5 on the other hand .
La ligne d'étanchéité externe de chaque joint est donc un appui sur les faces de jonction des pièces 2 et 3, et la ligne d'étanchéité interne sur les faces externes des plis 13 et 23 des tubes 9, 10 et 21, 22, situées dans le même plan ou sensiblement dans le même plan que les faces de jonction correspondantes, ce qui autorise une excellente étanchéité.The external sealing line of each joint is therefore a support on the junction faces of the parts 2 and 3, and the internal sealing line on the external faces of the folds 13 and 23 of the tubes 9, 10 and 21, 22, located in the same plane or substantially in the same plane as the corresponding junction faces, which allows excellent sealing.
Le profil du joint permet aussi de garantir une compression optimum, les volumes en excroissance venant se déplacer dans les volumes libres, remplissant à 95% l'espace libre entre les plaquesThe profile of the joint also ensures optimum compression, the protruding volumes moving in the free volumes, filling 95% of the free space between the plates
29 et 30, et les tubes 9 et 10.29 and 30, and tubes 9 and 10.
Le serrage permet alors systématiquement un contact pièce/plaque/bride ou bloc/plaque/bride en butée positive, la plaque supportant le joint servant d'entretoise. 12The tightening then systematically allows part / plate / flange or block / plate / flange contact in positive abutment, the plate supporting the seal serving as a spacer. 12
Selon le mode de réalisation de l'invention plus particulièrement décrit ici, le dispositif comporte de plus un élément 33 (voir figure 3), en matière plastique ou équivalente, de positionnement et de solidarisation de la bride 2 sur la bride 3.According to the embodiment of the invention more particularly described here, the device further comprises an element 33 (see FIG. 3), made of plastic or equivalent material, for positioning and securing the flange 2 to the flange 3.
L'élément 33 est ici constitué d'une pièce de section en coupe longitudinale sensiblement en forme de H, comprenant une paroi centrale 34 (la barre transversale du H) sensiblement rectangulaire, insérée entre les faces de raccordement 4 et 5, et de plus faible épaisseur que les plaques 29 et 30 des joints entre lesquels elle est intercalée transversalement.The element 33 here consists of a section piece in longitudinal section substantially in the form of an H, comprising a central wall 34 (the transverse bar of the H) substantially rectangular, inserted between the connection faces 4 and 5, and moreover thinner than the plates 29 and 30 of the joints between which it is inserted transversely.
La paroi 34 est par ailleurs percée de part en part en son centre d'un orifice 35, par exemple fileté, de passage et de maintien du boulon de fixation des brides entre elles.The wall 34 is moreover pierced right through in its center with an orifice 35, for example threaded, for passage and for holding the bolt for fixing the flanges together.
L'élément comprend deux parois longitudinalesThe element has two longitudinal walls
36 identiques en vis à vis, sensiblement rectangulaires et reliés entre elles par la paroi centrale 34, agencées pour coopérer à frottement ou pour contenir dans le sens transversal les brides 2 et 3.36 identical opposite, substantially rectangular and interconnected by the central wall 34, arranged to cooperate with friction or to contain the flanges 2 and 3 in the transverse direction.
Les parois 36 sont terminées en partie haute et en partie basse, par des excroissances transversalesThe walls 36 are terminated in the upper part and in the lower part, by transverse protuberances
37 et 38 dirigées vers l'intérieur de l'élément, constituant des rebords internes dont les parties dirigées vers la paroi centrale 34 sont propres à coopérer avec les faces externes des brides 2 et 3. L'élasticité de l'élément permet aux parois de s'écarter vers l'extérieur (flèche 39 sur la figure 3) lorsque l'on emboîte la partie 40 sur la bride 2 et la partie 41 sur la bride 3, et aux rebords de se refermer sur les brides après mise en place réalisant ainsi l'encliquage de positionnement et de solidarisation des brides l'une sur l'autre.37 and 38 directed towards the inside of the element, constituting internal flanges whose parts directed towards the central wall 34 are able to cooperate with the external faces of the flanges 2 and 3. The elasticity of the element allows the walls to move outwards (arrow 39 in FIG. 3) when the part 40 is fitted on the flange 2 and the part 41 on the flange 3, and at the edges of close again on the flanges after installation, thus making the positioning and securing connection of the flanges to each other.
On a représenté sur la figure 3A un autre mode de réalisation d'un élément 33' de section transversale en forme de U, ou sensiblement en forme de U, comportant des excroissances latérales longitudinales ou barres 34' insérées latéralement entre les faces 4 et 5 de raccordement de la bride 2 et de la pièce 3 et présentant par ailleurs un profilé du même type que celui de l'élément 33.FIG. 3A shows another embodiment of an element 33 ′ of U-shaped cross section or substantially U-shaped, comprising longitudinal lateral protrusions or bars 34 ′ inserted laterally between the faces 4 and 5 for connecting the flange 2 and the part 3 and also having a profile of the same type as that of the element 33.
On a représenté sur les figures 4 et 5 un autre mode de réalisation de joint 42 selon l'invention pour raccordement entre bride et pièce, muni d'une plaque métallique plane 43 d'épaisseur constante, percée de part en part de deux orifices 44 et 45, chacun comprenant un double anneau spécial 46 (cf. figure 6) .FIGS. 4 and 5 show another embodiment of seal 42 according to the invention for connection between flange and part, provided with a flat metal plate 43 of constant thickness, pierced right through with two orifices 44 and 45, each comprising a special double ring 46 (cf. FIG. 6).
Plus précisément l'anneau 46 surmoulé sur la plaque 43 présente une section transversale constante en forme de 8 horizontal s 'étendant dans le plan ou sensiblement dans le plan de la plaque, ou en forme de noeud papillon formé de deux tores sensiblement cylindriques 47 de diamètre d, ou de section ovale de dimension transversale maximale d.More specifically, the ring 46 molded onto the plate 43 has a constant cross section in the form of a horizontal 8 extending in the plane or substantially in the plane of the plate, or in the form of a bow tie formed by two substantially cylindrical toroids 47 of diameter d, or of oval section of maximum transverse dimension d.
La dimension d est supérieure à l'épaisseur de la plaque, par exemple de 1,1 fois à 1,8 fois supérieure, et notamment supérieure ou égale à de l'ordre de 1,5 fois ladite épaisseur. Les tores sont reliés entre eux par un cordon ou anneau circulaire 48 de plus faible épaisseur que la paroi 43 moulé ou coulé dans la masse, ledit joint s 'étendant de part et d'autre des faces supérieures et inférieures de la plaque sur une distance équivalente, à l'état libre, par exemple égale à quelques millimètres.The dimension d is greater than the thickness of the plate, for example from 1.1 times to 1.8 times greater, and in particular greater than or equal to around 1.5 times said thickness. The toroids are connected together by a cord or circular ring 48 of thinner thickness than the wall 43 molded or cast in the mass, said seal extending on either side of the upper faces and lower of the plate over an equivalent distance, in the free state, for example equal to a few millimeters.
Selon l'invention l'anneau est donc à double ligne de compression, c'est à dire qu'il présente de part et d'autre du plan central 48' de l'anneau deux lignes 47'et 47" ' ou surfaces de faible largeur, concentriques, respectivement symétriques par rapport audit plan 48', correspondant chacune à la limite externe la plus éloignée, par rapport au plan central 48' de l'anneau, au droit du diamètre médian du tore concerné ou équivalent.According to the invention the ring is therefore double compression line, that is to say that it has on either side of the central plane 48 'of the ring two lines 47' and 47 "'or surfaces of small width, concentric, respectively symmetrical with respect to said plane 48 ', each corresponding to the most distant external limit, with respect to the central plane 48' of the ring, in line with the median diameter of the torus concerned or equivalent.
La plaque 43 est également percée d'un orifice central 50 de passage du boulon de fixation muni d'un simple joint en élastomère 51 en biseau vers l'intérieur de l'orifice pour être à frottement avec le boulon de fixation (voir figure 7) . les figures 4A et 5A montrent quant à elles, deux joints 42a et 42b indépendants l'un de l'autre et susceptibles d'être utilisés avec l'élément de la figure 3A. Chaque joint comprend une plaque annulaire circulaire 43a et 43b, munie intérieurement d'un anneau d' étanchéité 46a et 46b du type décrit ci- avant. On a représenté sur la figure 8 un autre mode de réalisation d'un joint composite 52 selon l'invention comprenant une plaque 53 sensiblement triangulaire munie d'un orifice 54 perçant la plaque de part en part, de raccordement, comprenant un anneau en élastomère 55 à double ligne d' étanchéité du type décrit ci-avant, et un orifice de passage 56 du boulon de fixation de la bride sur la pièce.The plate 43 is also pierced with a central orifice 50 for the passage of the fixing bolt provided with a simple elastomer seal 51 bevelled towards the inside of the orifice so as to be in friction with the fixing bolt (see FIG. 7 ). FIGS. 4A and 5A show, for their part, two seals 42a and 42b independent of each other and capable of being used with the element of FIG. 3A. Each joint comprises a circular annular plate 43a and 43b, provided internally with a sealing ring 46a and 46b of the type described above. FIG. 8 shows another embodiment of a composite joint 52 according to the invention comprising a substantially triangular plate 53 provided with an orifice 54 piercing the plate right through, for connection, comprising an elastomer ring 55 with double sealing line of the type described above, and a through hole 56 of the bolt for fixing the flange to the part.
FEUILLEDEREMPLACEMENT(REGLE26. Dans un autre mode de réalisation (figure 9), le joint 57 selon l'invention comprend un double anneau en élastomère 58 du type plus particulièrement décrit ici, fixé sur une rondelle 59 en forme de tronc de cône ou de portion de coupelle annulaire, permettant une élasticité du joint après le serrage, par exemple nécessitant une pression d'aplatissement de 500 Kgf. la figure 11 montre une bride 60 munie de deux orifices 61 et 62, dont un (62) comportant une ouverture latérale 63 dirigée vers l'extérieur de la bride.LOCATION SHEET (RULE 26. In another embodiment (FIG. 9), the seal 57 according to the invention comprises a double elastomer ring 58 of the type more particularly described here, fixed to a washer 59 in the form of a truncated cone or portion of an annular cup, allowing elasticity of the joint after tightening, for example requiring a flattening pressure of 500 Kgf. FIG. 11 shows a flange 60 provided with two orifices 61 and 62, one of which (62) having a lateral opening 63 directed towards the outside of the flange.
Plus précisément en référence à la figure 12, l'orifice 62 comporte un manchon cylindrique 64 de passage du tube 65, le manchon étant bloqué en rotation par exemple par indexage (non représenté) dans l'orifice 62.More specifically with reference to FIG. 12, the orifice 62 comprises a cylindrical sleeve 64 for passage of the tube 65, the sleeve being locked in rotation for example by indexing (not shown) in the orifice 62.
Le tube 65 est fixé au manchon par pliure 66 de la paroi dudit tube sur elle même dans le sens longitudinal du tube, le manchon 64 étant muni d'une collerette 67 du coté de la pièce par rapport à la bride, la face 68 de raccordement de ladite collerette située du coté de la pièce étant munie d'un évidement annulaire 69 de réception de ladite pliure correspondante.The tube 65 is fixed to the sleeve by bending 66 of the wall of said tube on itself in the longitudinal direction of the tube, the sleeve 64 being provided with a flange 67 on the side of the part with respect to the flange, the face 68 of connection of said flange located on the side of the part being provided with an annular recess 69 for receiving said corresponding fold.
Le tube 65 comprend par ailleurs une extrémité 70 s'étendant au-delà de la collerette vers la pièce 3 et sur laquelle est enfilé le joint 71 du type décrit en référence à la figure 4A. On va maintenant décrire la fabrication du dispositif selon le mode de réalisation de l'invention plus particulièrement décrit ici, en faisant référence à la figure 1 ou 5. Les deux joints 27 et 28 sont enfilés sur les embouts 9' et 10' avec lesquels ils restent solidaires par frottement lors des manipulations suivantes. Le boulon est introduit et prévissé sur l'élément en matière plastique 33 (ou la plaque 43 du joint 42, dans le cas d'un joint en une partie) .The tube 65 also comprises an end 70 extending beyond the flange towards the part 3 and on which is threaded the seal 71 of the type described with reference to FIG. 4A. We will now describe the manufacture of the device according to the embodiment of the invention more particularly described here, with reference to FIG. 1 or 5. The two seals 27 and 28 are threaded onto the end pieces 9 'and 10' with which they remain integral by friction during the following manipulations. The bolt is introduced and provided on the plastic element 33 (or the plate 43 of the seal 42, in the case of a one-part seal).
L'élément en matière plastique est ensuite encliqué sur la bride 2, puis on fixe le tout en encliquant l'élément ainsi muni de la bride 2, sur la bride 3.The plastic element is then snapped onto the flange 2, then the whole is fixed while snapping the element thus provided with the flange 2, onto the flange 3.
La pièce reçoit donc l'ensemble bride avec joint et vis, l'opérateur n'ayant plus qu'à visser cette dernière sans risquer de perdre le joint ou de l'endommager.The part therefore receives the flange assembly with seal and screw, the operator only having to screw the latter without risking losing the seal or damaging it.
Le contact métal contre métal, et l'écrasement des parties en élastomère garantissent l'étanchéité avec une compression maîtrisée grâce à l'épaisseur constante de la plaque (par exemple en acier) du joint.The metal-to-metal contact, and the crushing of the elastomer parts guarantee sealing with controlled compression thanks to the constant thickness of the plate (for example steel) of the joint.
Dans le cas d'une rondelle conique, assurant une élasticité complémentaire, la tenue aux vibrations est encore améliorée.In the case of a conical washer, providing additional elasticity, the vibration resistance is further improved.
Dans le cas particulier plus précisément décrit, avec fixation par pliures, le double joint en forme de 8 horizontal écrasé de façon contrôlée assure d'une part l'étanchéité entre les extrémités 9' ou 10' et la bride 3, et d'autre part, et simultanément, l'étanchéité entre cette même extrémité et les pliures 13 et 23 du tube en aluminium correspondant.In the particular case described more precisely, with fixing by folds, the double seal in the form of a horizontal 8 crushed in a controlled manner provides, on the one hand, the seal between the ends 9 'or 10' and the flange 3, and on the other hand part, and simultaneously, the seal between this same end and the folds 13 and 23 of the corresponding aluminum tube.
La présence de l'élément 33 garantit également une parfaite étanchéité d'une part en rendant le 17The presence of the element 33 also guarantees a perfect seal on the one hand by making the 17
montage plus fiable, et d'autre part en participant à la tenue aux vibrations.more reliable mounting, and secondly by participating in the resistance to vibrations.
Comme il va de soit, et comme il résulte d'ailleurs de ce qui précède, la présente invention concerne également les variantes où l'anneau à double ligne de compression présente des tores de surface à pans coupés, où il existe plus de deux lignes d'étanchéité concentrique, par exemple trois, celle où l'anneau se termine vers l'intérieur dans le plan central du joint, par une languette ou lèvre circulaire, et celles où au moins deux tubes étant prévus sur la bride, les faces de connexion toujours parallèles entre elles, de la bride et de la pièce, respectivement présentent un décrochement symétrique par rapport au plan médian de connexion, d'un tube par rapport à l'autre, l'épaisseur des plaques et des joints en vis à vis de leur tube respectif étant alors différents. It goes without saying, and as it follows from the foregoing, the present invention also relates to the variants where the ring with double compression line has surface toroids with cut sides, where there are more than two lines concentric sealing, for example three, that where the ring ends inwards in the central plane of the joint, by a circular tongue or lip, and those where at least two tubes being provided on the flange, the faces of always parallel connection between them, the flange and the part, respectively have a symmetrical recess with respect to the median plane of connection, of a tube with respect to the other, the thickness of the plates and of the opposite joints of their respective tube then being different.

Claims

REVENDICATIONS
1. Dispositif (1) de raccordement étanche entre une bride (2) munie d'au moins un tube (9, 10) présentant une extrémité de raccordement (9', 10'), et une pièce (3) munie d'un orifice (19, 20) de connexion avec ladite extrémité, les faces (4, 5) de raccordement entre bride et pièce étant planes et parallèles, ledit dispositif comportant des moyens de serrage de la bride sur la pièce, caractérisé en ce qu'il comporte un joint (27, 28 ; 42 ; 52) composite situé entre les deux faces de raccordement, comprenant une plaque (29, 30 ; 43 ; 53 ; 59) d'épaisseur constante percée de part en part d'un orifice dont le bord interne est solidaire d'un anneau (31, 32 ; 46 ; 55) en matériau élastomère de section constante et de plus forte épaisseur, à l'état libre, que la plaque , ledit anneau étant introduit à frottement sur ladite extrémité de raccordement et présentant au moins deux lignes de compression avec le plan de chacune desdites faces de raccordement.1. Device (1) for sealing connection between a flange (2) provided with at least one tube (9, 10) having a connection end (9 ', 10'), and a part (3) provided with a orifice (19, 20) for connection with said end, the faces (4, 5) of connection between flange and part being plane and parallel, said device comprising means for clamping the flange on the part, characterized in that it comprises a joint (27, 28; 42; 52) composite located between the two connection faces, comprising a plate (29, 30; 43; 53; 59) of constant thickness drilled right through an orifice the internal edge is integral with a ring (31, 32; 46; 55) of elastomeric material of constant cross section and of greater thickness, in the free state, than the plate, said ring being introduced with friction on said connection end and having at least two compression lines with the plane of each of said connecting faces.
2. Dispositif selon la revendication 1, caractérisé en ce que l'anneau est à double lignes de compression et présente une section transversale sensiblement en forme de huit horizontal s 'étendant parallèlement au plan de la plaque.2. Device according to claim 1, characterized in that the ring is double compression lines and has a cross section substantially in the form of a horizontal eight extending parallel to the plane of the plate.
3. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la plaque d'épaisseur constante et constituée par une rondelle conique agencée pour se déformer de façon élastique lors d'une compression de ladite plaque dans le sens axial du cône.3. Device according to any one of the preceding claims, characterized in that the plate of constant thickness and constituted by a conical washer arranged to deform so elastic during compression of said plate in the axial direction of the cone.
4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la bride comporte au moins deux tubes et le joint comporte au moins deux orifices chacun muni d'un anneau en matière élastique à double ligne de compression respectivement introduits sur chacun desdits tubes. 4. Device according to any one of the preceding claims, characterized in that the flange comprises at least two tubes and the seal comprises at least two orifices each provided with a ring of elastic material with double compression line respectively introduced on each of said tubes.
5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le joint comporte de plus au moins un orifice de passage d'une vis de fixation.5. Device according to any one of the preceding claims, characterized in that the seal also comprises at least one orifice for the passage of a fixing screw.
6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'orifice de passage comporte un joint annulaire en forme de lèvre dirigée vers l'intérieur de l'orifice dans le plan de l'orifice.6. Device according to any one of the preceding claims, characterized in that the passage orifice comprises an annular seal in the form of a lip directed towards the interior of the orifice in the plane of the orifice.
7. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que, la bride (2) étant munie d'au moins un orifice(7, 8) de traversée de ladite bride de part en part, le tube (9, 10) est fixé sur ladite bride de part et d'autre de l'orifice par pliure (12, 13) de la paroi dudit tube sur elle même dans le sens longitudinal du tube, la face (4) de raccordement située du coté de la pièce étant munie d'un évidement annulaire (14, 15) de réception de ladite pliure correspondante.7. Device according to any one of the preceding claims, characterized in that, the flange (2) being provided with at least one orifice (7, 8) through which said flange passes right through, the tube (9, 10) is fixed to said flange on either side of the orifice by folding (12, 13) of the wall of said tube on itself in the longitudinal direction of the tube, the face (4) of connection located on the side of the part being provided with an annular recess (14, 15) for receiving said corresponding fold.
8. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la bride est munie d'au moins un orifice percé de part en part, ouvert sur le coté et dans lequel est inséré un manchon de passage du tube auquel il est fixé par pliure de la paroi dudit tube sur elle même dans le sens longitudinal du tube, ledit manchon étant muni d'une collerette du coté de la pièce par rapport à la bride, la face de raccordement de ladite collerette située du coté de la pièce étant munie d'un évidement annulaire de réception de ladite pliure correspondante.8. Device according to any one of claims 1 to 6, characterized in that the flange is provided with at least one orifice drilled right through, open on the side and in which is inserted a sleeve for passage of the tube to which it is fixed by folding of the wall of said tube on itself in the longitudinal direction of the tube, said sleeve being provided with a flange on the side of the part with respect to the flange, the connection face of said flange located on the side of the part being provided an annular recess for receiving said corresponding fold.
9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte de plus un élément (33) en matière plastique ou équivalent, de positionnement et de solidarisation entre la bride et la pièce avant serrage définitif, ledit élément comprenant des moyens (37) de fixation dudit élément sur la bride, et des moyens (38) de fixation rapide par encliquage ou équivalent, de l'élément ainsi solidaire de la bride sur la pièce.9. Device according to any one of the preceding claims, characterized in that it further comprises an element (33) of plastic or equivalent, for positioning and joining between the flange and the part before final tightening, said element comprising means (37) for fixing said element to the flange, and means (38) for quick fixing by snap-fastening or the like, of the element thus secured to the flange on the part.
10. Dispositif selon la revendication 9, caractérisé en ce que l'élément en matière plastique (33') présente une section transversale sensiblement en forme de U comportant des excroissances latérales (34') longitudinales insérées latéralement entre les faces de raccordement de la bride (2) et de la pièce (3) .10. Device according to claim 9, characterized in that the plastic element (33 ') has a substantially U-shaped cross section having lateral lateral protuberances (34') inserted laterally between the connection faces of the flange (2) and part (3).
11. Dispositif selon la revendication 9, caractérisé en ce que l'élément (33) en matière plastique comporte une paroi centrale (34) plane insérée entre les faces de raccordement (4, 5) de la bride et de la pièce.11. Device according to claim 9, characterized in that the element (33) of plastic material has a central central wall (34) inserted between the connection faces (4, 5) of the flange and the part.
12. Dispositif selon la revendication 11, caractérisé en ce que la bride comporte deux tubes12. Device according to claim 11, characterized in that the flange comprises two tubes
(9, 10) et la pièce deux orifices (19, 20) en vis à vis, et en ce que les moyens de serrage de la bride sur la pièce comprennent une vis traversant la bride et la paroi centrale de l'élément, de part en part, pour fixation avec ladite pièce, et maintenue par ledit élément en matière plastique.(9, 10) and the part two orifices (19, 20) facing each other, and in that the means for clamping the flange on the part comprise a screw passing through the flange and the central wall of the element, right through, for fixing with said part, and held by said plastic element.
13. Joint pour dispositif de raccordement selon l'une quelconque des revendications précédentes.13. Joint for connection device according to any one of the preceding claims.
14. Joint composite (27, 28, 42, 52) agencé pour être situé entre deux faces planes parallèles de raccordement (4, 5) comprenant une plaque (29, 30, 43, 53, 59) d'épaisseur constante percée de part en part d'au moins un orifice dont le bord interne est solidaire d'un anneau (31, 32, 46, 55) en matériau élastomère de section constante, de plus forte épaisseur, à l'état libre, que la plaque, ledit anneau étant agencé pour être introduit à frottement sur une extrémité de raccordement de tube, caractérisé en ce que l'anneau en matériau élastomère est à double ligne de compression (9, 10), avec chacune desdites faces et présente une section transversale sensiblement en forme de huit horizontal, s 'étendant dans le plan ou sensiblement parallèlement au plan (8) de la plaque.14. composite seal (27, 28, 42, 52) arranged to be located between two parallel flat connection faces (4, 5) comprising a plate (29, 30, 43, 53, 59) of constant thickness drilled through in part from at least one orifice, the internal edge of which is integral with a ring (31, 32, 46, 55) of elastomeric material of constant section, of greater thickness, in the free state, than the plate, said ring being arranged to be introduced with friction on a tube connection end, characterized in that the ring of elastomeric material is with double compression line (9, 10), with each of said faces and has a substantially shaped cross section of eight horizontal, extending in the plane or substantially parallel to the plane (8) of the plate.
15. Procédé de fabrication d'un dispositif selon l'une quelconque des revendications 9 à 11, caractérisé en ce que : on enfile le joint à frottement sur le tube, on fixe l'élément en matière plastique sur la bride, on met la bride en place sur la pièce par fixation rapide de l'une sur l'autre grâce audit élément, puis on serre ladite bride sur ladite pièce jusqu'à l'obtention d'un contact surfacique entre les faces de raccordement et les faces de la plaque du joint. 15. A method of manufacturing a device according to any one of claims 9 to 11, characterized in that: the friction seal is threaded onto the tube, the plastic element is fixed on the flange, the flange in place on the part by rapid fixing of one to the other thanks to said element, then the said flange is tightened on said part until a surface contact is obtained between the connection faces and the faces of the seal plate.
PCT/FR1995/001556 1994-11-25 1995-11-23 Device, method and coupling seal between a flange having at least one tube and a part WO1996017203A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR94/14179 1994-11-25
FR9414179A FR2727493B1 (en) 1994-11-25 1994-11-25 DEVICE AND METHOD FOR SEALED CONNECTION BETWEEN A FLANGE PROVIDED WITH AT LEAST ONE TUBE AND A PART
FR95/03251 1995-03-21
FR9503251A FR2727494B1 (en) 1994-11-25 1995-03-21 JOINT WITH SPECIAL PROFILE FOR WATERPROOF CONNECTION BETWEEN A TUBE END AND A PART

Publications (1)

Publication Number Publication Date
WO1996017203A1 true WO1996017203A1 (en) 1996-06-06

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PCT/FR1995/001556 WO1996017203A1 (en) 1994-11-25 1995-11-23 Device, method and coupling seal between a flange having at least one tube and a part

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FR (1) FR2727494B1 (en)
WO (1) WO1996017203A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226533A1 (en) * 2009-03-06 2010-09-08 Hutchinson FTS, Inc. Sealing washer with multiple sealing rings
CN110486554A (en) * 2019-09-05 2019-11-22 浙江煜焰工业设计有限公司 High-intensity sealing type oiling pipe assembly

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4205063A1 (en) * 1991-02-20 1992-08-27 Nippon Denso Co FLANGE CONNECTIONS FOR CONNECTING REFRIGERANT PIPES OF A COOLING CIRCUIT
DE4136625A1 (en) * 1991-11-07 1993-03-04 Daimler Benz Ag Seal with support for elastic sealing ring - has inclined axial sealing surface to ensure even contact pressure force of sealing ring
US5354101A (en) * 1993-09-13 1994-10-11 General Motors Corporation Sealing washer block connection
WO1994025788A1 (en) * 1993-04-27 1994-11-10 Manuli Automobile France Tube attachment assembly
GB2283070A (en) * 1993-10-22 1995-04-26 Automotive Fluid Systems Inc Conduit coupling
EP0657680A2 (en) * 1993-12-06 1995-06-14 Ford Motor Company Tube coupling block

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4205063A1 (en) * 1991-02-20 1992-08-27 Nippon Denso Co FLANGE CONNECTIONS FOR CONNECTING REFRIGERANT PIPES OF A COOLING CIRCUIT
DE4136625A1 (en) * 1991-11-07 1993-03-04 Daimler Benz Ag Seal with support for elastic sealing ring - has inclined axial sealing surface to ensure even contact pressure force of sealing ring
WO1994025788A1 (en) * 1993-04-27 1994-11-10 Manuli Automobile France Tube attachment assembly
US5354101A (en) * 1993-09-13 1994-10-11 General Motors Corporation Sealing washer block connection
GB2283070A (en) * 1993-10-22 1995-04-26 Automotive Fluid Systems Inc Conduit coupling
EP0657680A2 (en) * 1993-12-06 1995-06-14 Ford Motor Company Tube coupling block

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226533A1 (en) * 2009-03-06 2010-09-08 Hutchinson FTS, Inc. Sealing washer with multiple sealing rings
CN110486554A (en) * 2019-09-05 2019-11-22 浙江煜焰工业设计有限公司 High-intensity sealing type oiling pipe assembly

Also Published As

Publication number Publication date
FR2727494B1 (en) 1997-04-25
FR2727494A1 (en) 1996-05-31

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