CN105179753A - Flow limiting check combined valve - Google Patents
Flow limiting check combined valve Download PDFInfo
- Publication number
- CN105179753A CN105179753A CN201510639761.6A CN201510639761A CN105179753A CN 105179753 A CN105179753 A CN 105179753A CN 201510639761 A CN201510639761 A CN 201510639761A CN 105179753 A CN105179753 A CN 105179753A
- Authority
- CN
- China
- Prior art keywords
- cavity
- current limliting
- flap
- brake switch
- valve gap
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
Abstract
The invention discloses a flow limiting check combined valve. The valve comprises a valve body and a valve cover fixedly sealed with the valve body. A cavity is formed in the valve body in the axial direction, a through hole is formed in the valve cover in the axial direction, and the cavity is communicated with the through hole; one end, far away from the valve cover, of the cavity body is communicated with the exterior to form a medium inlet, and a valve clack is arranged in the cavity body in a sliding manner; a compression spring is arranged between the valve clack and the valve cover; and when one end of the valve clack is located at the first position, the valve clack and the through hole are sealed, and when the other end of the valve clack is located at the second position, the valve clack and the medium inlet are sealed. According to the flow limiting check combined valve, check and flow limiting functions are integrated, the structure is simple, and maintenance is convenient.
Description
Technical field
The application relates to a kind of current limliting non-return combination brake switch and proporting, and this current limliting non-return combination brake switch and proporting is applied in the fluid pipeline of LNG gas cylinder, mainly plays the effect preventing medium counter flow and current limliting from cutting off.
Background technique
Safety check in the fluid pipeline of LNG gas cylinder in the market and Restrictor Valves are 2 valves separately, an inside of installing, and an outside of installing, inconvenient maintenance, if pipeline is external, then adds risk.
Summary of the invention
The object of the present invention is to provide a kind of current limliting non-return combination brake switch and proporting, to overcome deficiency of the prior art.
For achieving the above object, the invention provides following technological scheme:
The embodiment of the present application discloses a kind of current limliting non-return combination brake switch and proporting,, comprise valve body and the valve gap fixing with described valve seal, described valve body and valve gap offer the cavity and through hole that communicate vertically respectively, described cavity deviates from one end of described valve gap and ft connection forms medium inlet, slide in described cavity and be provided with flap, Compress Spring is provided with between this flap and described valve gap, one end of described flap when primary importance and described through hole formed and seal, the other end of described flap when the second place and described medium inlet seal.
Preferably, in above-mentioned current limliting non-return combination brake switch and proporting, described flap has columniform main part, and the surrounding of this main part has protruded out a stepped part, and described Compress Spring is sheathed on the outside of described main part and is held between described stepped part and described valve gap.
Preferably, in above-mentioned current limliting non-return combination brake switch and proporting, described cavity comprises first cavity with the first diameter and second cavity with Second bobbin diameter, and described first cavity is near described valve gap one end, and described first diameter is greater than described Second bobbin diameter.
Preferably, in above-mentioned current limliting non-return combination brake switch and proporting, described stepped part slides in described second cavity, and the diameter of described stepped part is identical with the internal diameter of described second cavity.
Preferably, in above-mentioned current limliting non-return combination brake switch and proporting, the surface of contact of taper between described flap and described medium inlet, is formed.
Preferably, in above-mentioned current limliting non-return combination brake switch and proporting, the top of described valve body is recessed is formed with a stepped part, and described valve gap is sheathed on the upper end of described valve body and is rotated by thread surface and described valve body fixing.
Preferably, in above-mentioned current limliting non-return combination brake switch and proporting, between the edge of described valve gap and described stepped part, gasket seal is extruded with.
Compared with prior art, the invention has the advantages that: current limliting non-return combination brake switch and proporting of the present invention is by integrated for the function of non-return and current limliting, and structure is simple, easy to maintenance.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Figure 1 shows that the sectional view of current limliting non-return combination brake switch and proporting in the specific embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be described in detail the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, belongs to the scope of protection of the invention.
Shown in ginseng Fig. 1, current limliting non-return combination brake switch and proporting comprises valve body 1 and seals fixing valve gap 2 with valve body 1, valve body 1 and valve gap 2 offer the cavity 11 and through hole 21 that communicate vertically respectively, cavity 11 deviates from one end of valve gap 2 and ft connection forms medium inlet 12, slide in cavity 11 and be provided with flap 3, Compress Spring 4 is provided with between this flap 3 and valve gap 2, one end of flap 3 when primary importance and through hole 21 formed and seal, the other end of flap 3 when the second place and medium inlet 12 carry out the sealing of conical contact face.
In this technological scheme, primary importance refers to that flap moves to top maximum position in Fig. 1, and when primary importance, the top of flap and the opening of through hole form surface of contact and seal; The second place refers to that flap moves to below maximum position in Fig. 1, when the second place, forms surface of contact and seal between the bottom of flap and medium inlet.
In this technological scheme, through hole and cavity communicate vertically, as long as flap is by moving up and down the sealing that can realize upper and lower two ends, structure is simple, and flap dismounting is very convenient, is convenient to maintenance.
Further, flap 3 has columniform main part 31, and the surrounding of this main part 31 has protruded out a stepped part 32, and Compress Spring 4 is sheathed on the outside of main part 31 and is held between stepped part 32 and valve gap 2.
In this technological scheme, the shape of main part 31 is not limited to cylindrical, and such as its cross section can also be rectangle etc.
Further, cavity 11 comprises first cavity 111 with the first diameter and has the second cavity 112, first cavity 111 of Second bobbin diameter near valve gap 2 one end, and the first diameter is greater than Second bobbin diameter.Stepped part 32 slides in the second cavity 112, and the diameter of stepped part 32 is identical with the internal diameter of the second cavity 112.
Further, the top of valve body 1 is recessed is formed with a stepped part 13, and valve gap 2 is sheathed on the upper end of stepped part 13 and is rotated by thread surface and valve body 1 fixing.Gasket seal 5 is extruded with between the edge of valve gap 2 and stepped part 13.
Current limliting non-return combination brake switch and proporting in the present embodiment is by integrated for the function of non-return and current limliting, in normal operation, medium tries hard to recommend the circulation of valve opening lobe medium, when upstream pressure is closed automatically lower than valve during downstream pressure, flap and valve body are formed and seal, and now play the effect of safety check; When the rate-of flow of forward increases to suddenly setting range, flap is formed with valve gap and seals under the effect of medium, now plays the effect that current limliting is cut off.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or control panel, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The above is only the embodiment of the application; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection domain of the application.
Claims (7)
1. a current limliting non-return combination brake switch and proporting, it is characterized in that, comprise valve body and the valve gap fixing with described valve seal, described valve body and valve gap offer the cavity and through hole that communicate vertically respectively, described cavity deviates from one end of described valve gap and ft connection forms medium inlet, slide in described cavity and be provided with flap, Compress Spring is provided with between this flap and described valve gap, one end of described flap when primary importance and described through hole formed and seal, the other end of described flap when the second place and described medium inlet seal.
2. current limliting non-return combination brake switch and proporting according to claim 1, it is characterized in that: described flap has columniform main part, the surrounding of this main part has protruded out a stepped part, and described Compress Spring is sheathed on the outside of described main part and is held between described stepped part and described valve gap.
3. current limliting non-return combination brake switch and proporting according to claim 2, it is characterized in that: described cavity comprises first cavity with the first diameter and second cavity with Second bobbin diameter, described first cavity is near described valve gap one end, and described first diameter is greater than described Second bobbin diameter.
4. current limliting non-return combination brake switch and proporting according to claim 3, it is characterized in that: described stepped part slides in described second cavity, and the diameter of described stepped part is identical with the internal diameter of described second cavity.
5. current limliting non-return combination brake switch and proporting according to claim 1, is characterized in that: the surface of contact forming taper between described flap and described medium inlet.
6. current limliting non-return combination brake switch and proporting according to claim 1, is characterized in that: the top of described valve body is recessed is formed with a stepped part, and described valve gap is sheathed on the upper end of described valve body and is rotated by thread surface and described valve body fixing.
7. current limliting non-return combination brake switch and proporting according to claim 6, is characterized in that: be extruded with gasket seal between the edge of described valve gap and described stepped part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510639761.6A CN105179753A (en) | 2015-09-30 | 2015-09-30 | Flow limiting check combined valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510639761.6A CN105179753A (en) | 2015-09-30 | 2015-09-30 | Flow limiting check combined valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105179753A true CN105179753A (en) | 2015-12-23 |
Family
ID=54902049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510639761.6A Pending CN105179753A (en) | 2015-09-30 | 2015-09-30 | Flow limiting check combined valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105179753A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237629A (en) * | 2018-11-28 | 2020-06-05 | 张家港中集圣达因低温装备有限公司 | Marine natural gas storage tank |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5613518A (en) * | 1995-02-21 | 1997-03-25 | Dresser Industries, Inc. | Device for restricting excess flow |
| CN1688873A (en) * | 2002-09-12 | 2005-10-26 | A.R.I.流体控制部件农业合作协会有限公司 | Valve for prevention of low flow rates through flow meter |
| CN201232787Y (en) * | 2008-07-30 | 2009-05-06 | 韩亚杰 | Limiting hydraulic valve |
| CN201475437U (en) * | 2009-07-17 | 2010-05-19 | 泉州中宇卫浴科技实业有限公司 | Constant-current non-return valve |
| US7849875B2 (en) * | 2007-07-31 | 2010-12-14 | Alcon, Inc. | Check valve |
| CN204942628U (en) * | 2015-09-30 | 2016-01-06 | 张家港富瑞特种装备股份有限公司 | A kind of current limliting non-return combination brake switch and proporting |
-
2015
- 2015-09-30 CN CN201510639761.6A patent/CN105179753A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5613518A (en) * | 1995-02-21 | 1997-03-25 | Dresser Industries, Inc. | Device for restricting excess flow |
| CN1688873A (en) * | 2002-09-12 | 2005-10-26 | A.R.I.流体控制部件农业合作协会有限公司 | Valve for prevention of low flow rates through flow meter |
| US7849875B2 (en) * | 2007-07-31 | 2010-12-14 | Alcon, Inc. | Check valve |
| CN201232787Y (en) * | 2008-07-30 | 2009-05-06 | 韩亚杰 | Limiting hydraulic valve |
| CN201475437U (en) * | 2009-07-17 | 2010-05-19 | 泉州中宇卫浴科技实业有限公司 | Constant-current non-return valve |
| CN204942628U (en) * | 2015-09-30 | 2016-01-06 | 张家港富瑞特种装备股份有限公司 | A kind of current limliting non-return combination brake switch and proporting |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237629A (en) * | 2018-11-28 | 2020-06-05 | 张家港中集圣达因低温装备有限公司 | Marine natural gas storage tank |
| CN111237629B (en) * | 2018-11-28 | 2022-04-15 | 张家港中集圣达因低温装备有限公司 | Marine natural gas storage tank |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |