US20140182732A1 - Flush joint pipe - Google Patents
Flush joint pipe Download PDFInfo
- Publication number
- US20140182732A1 US20140182732A1 US14/015,231 US201314015231A US2014182732A1 US 20140182732 A1 US20140182732 A1 US 20140182732A1 US 201314015231 A US201314015231 A US 201314015231A US 2014182732 A1 US2014182732 A1 US 2014182732A1
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- US
- United States
- Prior art keywords
- pipe
- spline
- engagement groove
- tubular body
- lbs
- 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.)
- Abandoned
Links
- 238000007789 sealing Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 239000011152 fibreglass Substances 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- -1 polyethylene Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- WFSIQNRAWDRWLN-RDBXOABQSA-N (4Z,8Z)-4,8-dimethyl-12-oxotrideca-4,8-dienal Chemical compound CC(=O)CC\C=C(\C)CC\C=C(\C)CCC=O WFSIQNRAWDRWLN-RDBXOABQSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
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- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
- F16L47/12—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with additional locking 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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
- F16L1/10—Accessories therefor, e.g. anchors for aligning
-
- 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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
- F16L1/036—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being composed of sections of short length
-
- 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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
- F16L1/09—Accessories therefor, e.g. anchors for bringing two tubular members closer to each other
-
- 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
- F16L17/00—Joints with packing adapted to sealing by fluid pressure
- F16L17/06—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between the end surfaces of the pipes or flanges or arranged in recesses in the pipe ends or flanges
-
- 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
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members
- F16L37/14—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain
- F16L37/142—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain where the securing element is inserted tangentially
- F16L37/148—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain where the securing element is inserted tangentially the securing element being flexible
Definitions
- the present disclosure is directed generally to pipes and more particularly to polymeric pipes and their installation.
- the tunneling or boring machines can allow pipes to be installed under highways or freeways without having to break the road surface and disrupt traffic. Moreover, these machines can be used to install pipes under rivers and other small bodies of water.
- the types of pipe that can be installed using these methods vary, but include water pipe and sewer pipes. As the industry is evolving, the types of pipes that can be installed using these methods also is changing. Other applications include pipes for municipal infrastructure improvements, residential utility delivery, water transfer, irrigation pipe and fluid transfer for mining operations, and even electrical conduit and temporary bypass systems.
- a method of installing pipe in a subterranean location may include forming a bore in the subterranean location.
- the bore can include an inner wall at least partially comprising subterranean material.
- the method may further include moving a first polymeric pipe segment into the bore; coupling a second polymeric pipe segment to the first polymeric pipe segment using a mechanical restraint.
- the coupled first and second polymeric pipe segments can have a cross-sectional shape that is essentially uniform along the length of the first and second polymeric pipe segments.
- the method may include moving the first and second polymeric pipe segments into the subterranean location.
- the first and second polymeric pipe segments can be at least partially in direct contact with the inner wall of the bore.
- FIG. 1 includes a sectional side view of an embodiment of a pipe.
- FIG. 3 includes an enlarged sectional view of an embodiment of the pipe at Circle 3 in FIG. 1 .
- FIGS. 4A and 4B include end and plan views, respectively, of an embodiment of a spline.
- FIG. 5 includes a sectional side view of an embodiment of a portion of a pipe joint.
- FIG. 6 includes a sectional side view of an embodiment of a pipe.
- FIG. 8 includes an isometric view of an embodiment of pipe segments prior to forming a joint.
- FIG. 10 is an axial end view of an embodiment of a pipe in an earthen formation.
- a typical underground pipe includes a relatively large bell end that can snag and catch on dirt when being installed in such a manner.
- a string of pipes including the pipe disclosed herein can have a cross-sectional shape that is substantially uniform along the entire length of the string of pipes. Further, the string of pipes is free of protuberances extending beyond an outer wall of the pipe.
- a pipe is illustrated and is generally designated 100 .
- Embodiments of the pipe 100 include a flush joint pipe 100 with an axis 101 , and a generally a tubular body 102 having a male end 104 and a female end 106 .
- Both the male end 104 and the female end 106 can have cylindrical butt ends. In one version, no chamfers or tapers on the male end 104 or female end 106 are required.
- the male end 104 can include an external surface 110 that can be formed with a first engagement groove 112 .
- the first engagement groove 112 can be the only groove formed in the male end 104 , such that two or more grooves are not required.
- the female end 106 can include an internal surface 120 that can be formed with a second engagement groove 122 .
- an aperture 124 can extend from an outer surface 126 of the tubular body 102 radially inward to the second engagement groove 122 .
- Embodiments of the aperture 124 can be formed tangential to the first and second engagement grooves 112 , 122 . Such a tangential direction can reduce resistance to the entry of a flexible spline 132 , as described elsewhere herein.
- the aperture 124 can be round (e.g., drilled), rectangular/square (e.g., milled), etc., and may be oriented for clock-wise or counter-clockwise spline installation.
- the aperture 124 may be formed as small as possible while still enabling a spline to pass therethrough.
- the pipe joint assembly may be configured to include an interference between the male end 104 and a seal 142 inside the female end 106 .
- the male and female ends 104 , 106 may be close-fitting, but are not necessarily overlapping.
- a compressive force may be required to assemble the male and female ends 104 , 106 , due to compression of the seal 142 .
- a desired interference fit between the butt ends of two pipes 100 is provided.
- inserting one pipe into another may require a selected compressive force to be exerted on the pipes to align the respective first and second engagement grooves 112 , 122 .
- the flexible spline 132 can include a spline length, L S ( FIGS. 4 and 10 ).
- L S can be slightly shorter than L G .
- L S can be ⁇ 95% L G , such as ⁇ 90% L G , ⁇ 85% L G , or even ⁇ 80% L G .
- L S can be greater than about half the length of L G .
- L S can be ⁇ 50% L G , such as ⁇ 55% L G , ⁇ 60% L G , ⁇ 65% L G , ⁇ 70% L G , or even ⁇ 75% L G .
- L S can be within a range between and including any of the values described herein.
- a continuous spline 132 is illustrated, a multi-piece spline can be used. Further, multiple splines installed in different grooves may be used, depending on the application. The splines may be configured in a parallel orientation.
- H S can be ⁇ 100% H G , such as ⁇ 99% H G , ⁇ 98% H G , ⁇ 97% H G , ⁇ 96% H G , or even ⁇ 95% H G .
- H S can be within a range between and including any of the values described herein.
- the spline width W S can be almost identical to the groove width W G .
- W S can be ⁇ 100% W G , such as ⁇ 99.9% H G , ⁇ 98.8% H G , ⁇ 99.7% H G , ⁇ 99.6% H G , or even ⁇ 99.5% H G .
- W S can be within a range between and including any of the values described herein.
- the tubular body 102 can include one or more polymers.
- the tubular body 102 can include polyolefin.
- the tubular body 102 can include polyethylene.
- the tubular body 102 can include polyvinyl chloride (PVC).
- the tubular body 102 can include a composite material, such as fiberglass, carbon fiber, or other fiber reinforced plastic materials, or even a combination of the materials described herein.
- the tubular body 102 may not include one or more of these materials.
- the tubular body 102 may not comprise a polymer.
- the pipe joint assembly established by the male 104 and female end 106 can have a tensile strength, TS.
- the TS can be ⁇ 500 lbs/in 2 of cross-sectional area, A CS , of the tubular body 102 .
- Tensile strength may be measured by assembling a male/female joint of pipes together, clamping it in a tensile test machine (e.g., UTM), and pulling on the joint until it fails.
- Tensile strength also may be validated by performing a water pressure burst test through a joint of pipes. In this method, a joint of pipes may be assembled and capped on both ends. The sealed joint is filled with water and the internal pressure is increased until the system fails.
- the tensile loads applied to the joint may be calculated by multiplying the water pressure and the outside area of the pipe and caps.
- the tensile strength TS can be ⁇ 750 lbs/in 2 , such as ⁇ 1000 lbs/in 2 .
- TS can be ⁇ 10,000 lbs/in 2 , such as ⁇ 2250 lbs/in 2 , ⁇ 2000 lbs/in 2 , ⁇ 1750 lbs/in 2 , or even ⁇ 1500 lbs/in 2 .
- TS can be within a range between and including any of the values described herein.
- the assembled pipes can have an outer cross-sectional shape that is substantially uniform along the entire length of the pipe assembly.
- the pipe joint assembly can include a compressive strength, CS.
- the CS may be measure like the TS, but in a reverse direction.
- the CS can be ⁇ 2500 lbs/in 2 of cross-sectional area, A, of the tubular body 102 .
- CS can be ⁇ 3000 lbs/in 2 , or even ⁇ 40001 lbs/in 2 .
- CS can be ⁇ 35,000 lbs/in 2 , such as ⁇ 25,000 lbs/in 2 , ⁇ 20,000 lbs/in 2 , ⁇ 15,000 lbs/in 2 , or even ⁇ 10,000 lbs/in 2 .
- CS can also be within a range between and including any of the values described herein.
- the pipe joint assembly can include a leak pressure, P L .
- the P L may include at least one or vacuum testing and pressure testing.
- the P L may be tested by forming a pipe joint of at least two pipes, capping the ends, filling the joint with a fluid, and then vacuum and/or pressure testing the system.
- the leak pressure P L can be ⁇ 10 lbs/in 2 of surface area, A S , of an inner wall of the tubular body.
- P L can be ⁇ 5 lbs/in 2 , ⁇ 3 lbs/in 2 , or even ⁇ 1 lbs/in 2 .
- P L can be ⁇ 1000 lbs/in 2 , such as ⁇ 955 lbs/in 2 , ⁇ 755 lbs/in 2 , or even ⁇ 100 lbs/in 2 .
- P L can also be within a range between and including any of the values described herein.
- the pipe 100 can also include a seal groove or sealing member groove 140 that can be formed in the internal wall 120 of the female end 106 of the tubular body 102 .
- a seal or sealing member 142 ( FIGS. 5 and 8 ) can be disposed within the sealing member groove 140 .
- the seal 142 may be formed from a variety of materials, such as elastomers, rubber, etc. In one version, the seal may have a selected hardness. For example, the seal hardness can be in a range of about 35 Shore A to about 115 Shore A.
- the seal 142 can compress and/or deform against the smooth exterior surface of the first engagement groove 112 .
- the sealing member 142 is configured to deform as the male end 104 of one pipe 100 is inserted within the female end 106 of another pipe 100 .
- the sealing member 142 can be configured to engage the external wall 110 of the male end 104 of the tubular body 102 and form a sealed joint between the female end 106 and the male end 104 of the respective pipes 100 .
- the sealing member 142 can include an elastic material. Moreover, the sealing member 142 can include rubber. In a particular aspect, the sealing member 142 can include a composite structure that includes a support structure and a sealing member.
- the tubular body 102 can include an outer diameter, OD TB ( FIG. 10 ).
- the pipe joint assembly can include an outer diameter, OD PJA .
- OD PJA OD TB , or they can be substantially equal.
- the tubular body can include a wall thickness, T W .
- a ratio of T W :OD TB can be ⁇ 1:20, such as ⁇ 1:19, ⁇ 1:18, ⁇ 1:17, ⁇ 1:16, or even ⁇ 1:15.
- T W :OD TD can be ⁇ 1:10, or ⁇ 1:11, or ⁇ 1:12.
- the pipe joint assembly can include a flexural strength, FS.
- the FS can be measured at the pipe joint assembly using a three point flexural test. Flexural testing may be performed by assembling a pipe joint, capping the ends of the system, filling it with water at a nominal pressure, and then bending the system in a three-point press until leakage is noted at the joint.
- FS can be ⁇ 2500 psi, such as ⁇ 3500 psi, ⁇ 5000 psi, or even ⁇ 7500 psi.
- FS can be ⁇ 50,000 psi, such as ⁇ 35,000 psi, ⁇ 25,000 psi, or even ⁇ 15,000 psi.
- the FS can be in a range between any of these values.
- the flush pipe joint can include average outside diameter, OD A ( FIG. 10 ).
- the OD A can be a relatively small diameter.
- the OD A can have a tight tolerance.
- OD A can be ⁇ 2.375′′ ⁇ 0.011, such as OD A ⁇ 6.275′′ ⁇ 0.011′′, ⁇ 8.400′′ ⁇ 0.012′′, ⁇ 9.440′′ ⁇ 0.014′′, ⁇ 10.500′′ ⁇ 0.015′′, ⁇ 12.500′′ ⁇ 0.018′′, or even ⁇ 15.300′′ ⁇ 0.023′′.
- OD A can be a relatively larger diameter, such as ⁇ 36.300′′ ⁇ 0.054′′, ⁇ 30.300′′ ⁇ 0.045′′, or even ⁇ 24.300′′ ⁇ 0.036′′.
- the ODA can be ⁇ 0.100′′.
- the OD A can be within a range between and including any of the values described herein.
- OD A can be about ⁇ 0.5%.
- the OD A can be about ⁇ 0.4%, such as about ⁇ 0.3%, about ⁇ 0.2%, about ⁇ 0.19%, about ⁇ 0.18%, about ⁇ 0.17%, about ⁇ 0.16%, about ⁇ 0.15%, or even about ⁇ 0.14%.
- the OD A can be within a range between and including any of the values described herein.
- the flush pipe joint can include an average inside diameter, ID A , that is also very consistent.
- ID A can be about ⁇ 0.5%.
- the ID A can be about ⁇ 0.4%, such as about ⁇ 0.3%, about ⁇ 0.2%, about ⁇ 0.19%, about ⁇ 0.18%, about ⁇ 0.17%, about ⁇ 0.16%, about ⁇ 0.15%, or even about ⁇ 0.14%.
- the ID A can be within a range between and including any of these values described herein.
- the pipe joint assembly comprises two or more pipes that can have a very consistent outer diameter, a very consistent inner diameter, or both.
- the pipe joint assembly has an unusually high level of concentricity between the pipes (e.g., at the ID, the OD and/or at the interfaces therebetween) that make up the joint.
- the pipe can include a concentricity relative to a pipe axis, wherein the concentricity at an outside diameter, an inside diameter and an interface between pipe segments is about ⁇ 0.5%.
- Such consistency in all pipes in the pipe joint assembly enables easier installation of a pipeline, as well as ease of fluid flow through the interior of the pipeline in operation.
- the tubular body 102 can include an inner diameter, ID TB .
- the pipe joint assembly can include an inner diameter, ID PJA .
- ID PJA ID TB .
- the tubular body 102 can include a wall thickness, T W .
- a ratio of T W :ID TB can be ⁇ 1:20, such as ⁇ 1:19, ⁇ 1:18, ⁇ 1:17, ⁇ 1:16, or even ⁇ 1:15.
- T W :ID TB can be ⁇ 1:10, or ⁇ 1:11, or ⁇ 1:12. The ratio also can be in a range between any of these values.
- Embodiments of the pipe 100 can have a diameter ratio (DR).
- DR diameter ratio
- SDR standard dimension ratio
- DR and SDR are widely used in the pipe industry (abbreviated DR and SDR). Both terms refer to the same ratio, which is a dimensionless term that is obtained by dividing the average outside diameter of the pipe by the minimum pipe wall thickness.
- DR can be >7, >13, or >15. Further, DR can be ⁇ 32, such as ⁇ 26, or even ⁇ 21. DR can be within a range between and including any of the values described herein.
- the pipe 100 can include an impact strength, S.
- the impact strength S can be measured in a number of industry standard ways. For base material, notches, izod or charpy testing is performed. For pipe impact test (from Uni-Bell), pipe samples are placed on a specified holder and are subjected to impact by a metal tip of defined geometry and weight falling from a specified height. Impact resistance by PVC pipe may be reported in foot-pounds (Joules) of energy. Impact resistance testing is conducted in accordance with ASTM D 2444.
- the micro-tunneling machine can include an outer diameter, OD MTM .
- OD MTM is depicted as the inner diameter ID B of an earthen bore in FIG. 10 .
- OD MTM would be slightly smaller than the inner diameter ID B of the earthen bore shown.
- the OD MTM can be very similar to the OD P .
- the ratio OD MTM :OD P can be ⁇ 1, such as ⁇ 1.01, ⁇ 1.02, ⁇ 1.03, ⁇ 1.04, or even ⁇ 1.05.
- O MTM :O DP can be ⁇ 1.25, such as ⁇ 1.20, ⁇ 1.15, or even ⁇ 1.10.
- a method of installing a pipe can include a retrofit of existing or previously installed pipeline.
- the method can include locating and exposing a previously installed pipeline in a bore hole; pulling a cutting head through the previously installed pipeline; breaking the previously installed pipeline with the cutting head and expanding the bore hole to a larger size by pushing pipe fragments of the previously installed pipeline into soil surrounding the bore hole; and then pulling a new pipe having a flush joint into the enlarged bore hole behind the cutting head.
- the cutting head can be static or dynamic, and can include at least one of hammering and turning cutters, and pneumatic systems.
- One or more of the pipes can be installed by within a subterranean location by forming a bore in the subterranean location, e.g., using a micro-tunneling machine or a micro-boring machine.
- the bore can include an inner wall that at least partially includes subterranean material such as rocks, dirt, etc.
- a first polymeric pipe segment can be moved into the bore.
- a second polymeric pipe segment can be coupled to the first polymeric pipe segment using a mechanical restraint, such as the spline described herein.
- the assembled or coupled first and second pipes can have a cross-sectional shape that is essentially uniform along the length of the first and second pipes.
- the first and second polymeric pipe segments can be moved into the subterranean location and the first and second polymeric pipes can be in direct contact with the inner wall of the earthen bore.
Abstract
A pipe has a tubular body with a male end and a female end. The male end has an external surface with a first engagement groove. The female end has an internal surface with a second engagement groove, and an aperture extending from an outer surface of the tubular body to the second engagement groove. The female end receives the male end of another pipe such that the first engagement groove of the male end axially aligns with the second engagement groove of the female end to establish a spline engagement groove having a groove length, LG. A flexible spline is located in the spline engagement groove to lock the pipes together and establish a pipe assembly. The flexible spline has a spline length, LS, and LS≦LG.
Description
- This application claims priority to and the benefit of U.S. Prov. App. No. 61/748,021, filed Dec. 31, 2012, and is incorporated herein by reference in its entirety.
- 1. Field of the Disclosure
- The present disclosure is directed generally to pipes and more particularly to polymeric pipes and their installation.
- 2. Description of the Related Art
- In recent years, the use of micro-boring or micro-tunneling has become more prevalent for installing underground pipes. The tunneling or boring machines can allow pipes to be installed under highways or freeways without having to break the road surface and disrupt traffic. Moreover, these machines can be used to install pipes under rivers and other small bodies of water.
- The types of pipe that can be installed using these methods vary, but include water pipe and sewer pipes. As the industry is evolving, the types of pipes that can be installed using these methods also is changing. Other applications include pipes for municipal infrastructure improvements, residential utility delivery, water transfer, irrigation pipe and fluid transfer for mining operations, and even electrical conduit and temporary bypass systems.
- Accordingly, the industry continues to need improvements in pipes, particularly improvements to pipes that can be installed using a micro-tunneling or micro-boring machine.
- Embodiments of a flush joint pipe and method of installation are disclosed. For example, a method of installing pipe in a subterranean location may include forming a bore in the subterranean location. The bore can include an inner wall at least partially comprising subterranean material. The method may further include moving a first polymeric pipe segment into the bore; coupling a second polymeric pipe segment to the first polymeric pipe segment using a mechanical restraint. The coupled first and second polymeric pipe segments can have a cross-sectional shape that is essentially uniform along the length of the first and second polymeric pipe segments. The method may include moving the first and second polymeric pipe segments into the subterranean location. The first and second polymeric pipe segments can be at least partially in direct contact with the inner wall of the bore.
- The present disclosure can be better understood, and its numerous features and advantages made apparent to those skilled in the art by referencing the accompanying drawings.
-
FIG. 1 includes a sectional side view of an embodiment of a pipe. -
FIG. 2 includes an enlarged sectional side view of an embodiment of the pipe at Circle 2 inFIG. 1 . -
FIG. 3 includes an enlarged sectional view of an embodiment of the pipe at Circle 3 inFIG. 1 . -
FIGS. 4A and 4B include end and plan views, respectively, of an embodiment of a spline. -
FIG. 5 includes a sectional side view of an embodiment of a portion of a pipe joint. -
FIG. 6 includes a sectional side view of an embodiment of a pipe. -
FIG. 7 includes an exploded side view of an embodiment of a pipe assembly. -
FIG. 8 includes an isometric view of an embodiment of pipe segments prior to forming a joint. -
FIGS. 9A and 9B are enlarged sectional side views of an embodiment of a spline groove shown without and with a spline, respectively. -
FIG. 10 is an axial end view of an embodiment of a pipe in an earthen formation. - The use of the same reference symbols in different drawings indicates similar or identical items.
- The following description is directed to pipes, and particularly, to pipes that are configured to have flush joints that minimize resistance when being installed using a micro-boring or micro-tunneling operation.
- A typical underground pipe includes a relatively large bell end that can snag and catch on dirt when being installed in such a manner. A string of pipes including the pipe disclosed herein can have a cross-sectional shape that is substantially uniform along the entire length of the string of pipes. Further, the string of pipes is free of protuberances extending beyond an outer wall of the pipe.
- Referring to the drawings, a pipe is illustrated and is generally designated 100. Embodiments of the
pipe 100 include aflush joint pipe 100 with anaxis 101, and a generally atubular body 102 having amale end 104 and afemale end 106. Both themale end 104 and thefemale end 106 can have cylindrical butt ends. In one version, no chamfers or tapers on themale end 104 orfemale end 106 are required. Themale end 104 can include anexternal surface 110 that can be formed with afirst engagement groove 112. Thefirst engagement groove 112 can be the only groove formed in themale end 104, such that two or more grooves are not required. Thefemale end 106 can include aninternal surface 120 that can be formed with asecond engagement groove 122. - As illustrated in
FIGS. 7 and 8 , anaperture 124 can extend from anouter surface 126 of thetubular body 102 radially inward to thesecond engagement groove 122. Embodiments of theaperture 124 can be formed tangential to the first andsecond engagement grooves flexible spline 132, as described elsewhere herein. Theaperture 124 can be round (e.g., drilled), rectangular/square (e.g., milled), etc., and may be oriented for clock-wise or counter-clockwise spline installation. In addition, theaperture 124 may be formed as small as possible while still enabling a spline to pass therethrough. More than oneaperture 124 may be provided, which can allow for the spline to be inserted at different angles and/or directions depending on how the pipe is laying during installation. Such a configuration can also allow a tool to be inserted to assist in the removal of an installed spline. - In a particular aspect, the
female end 106 can be configured to receive amale end 104 of anotherpipe 100 such that afirst engagement groove 112 of themale end 104 of theother pipe 100 aligns with thesecond engagement groove 122 of thefemale end 106 to collectively establish aspline engagement groove 130, as indicated inFIG. 5 . In a particular aspect, thespline engagement groove 130 can have a groove length (i.e., circumferential length relative to the axis), LG (FIG. 10 ), measured around theexternal surface 110 of themale end 104 of thepipe 100. - In addition, the pipe joint assembly may be configured to include an interference between the
male end 104 and aseal 142 inside thefemale end 106. The male andfemale ends female ends seal 142. - In other embodiments, a desired interference fit between the butt ends of two
pipes 100 is provided. In a version, there is no axial gap between the butt ends and the shoulders they abut on the respective pipes. For example, inserting one pipe into another may require a selected compressive force to be exerted on the pipes to align the respective first andsecond engagement grooves - A
spline 132, illustrated inFIGS. 4 and 5 , can be provided. Thespline 132 can be flexible and configured to be inserted and fit through theaperture 124 and entirely into thespline engagement groove 130. Thespline 132 can prevent themale end 104 of theother pipe 100 from withdrawing from thefemale end 106 to establish a pipe joint assembly of twopipes 100. Thespline 132 may be formed from different types of materials, such as a polymer (e.g., nylon), glass-reinforced plastics, etc. The material may be chosen to meet the structural, strength and chemical resistance requirements for the intended application. Thespline 132 may be extruded, molded, etc. - In a particular aspect, the
flexible spline 132 can include a spline length, LS (FIGS. 4 and 10 ). LS can be slightly shorter than LG. For example, LS can be ≦95% LG, such as ≦90% LG, ≦85% LG, or even ≦80% LG. In still other embodiments, LS can be greater than about half the length of LG. For example, LS can be ≧50% LG, such as ≧55% LG, ≧60% LG, ≧65% LG, ≧70% LG, or even ≧75% LG. In another aspect, LS can be within a range between and including any of the values described herein. - While a
continuous spline 132 is illustrated, a multi-piece spline can be used. Further, multiple splines installed in different grooves may be used, depending on the application. The splines may be configured in a parallel orientation. - In a particular aspect, the
spline engagement groove 130 can have a cross-sectional groove height (i.e., radial length relative to the axis 101), HG (FIG. 9A ). Thespline 132 can include a cross-sectional spline height, HS (FIGS. 4A and 9B ). The spline height HS can be greater than the groove height HG. For example, HS can be ≧50% HG, such as ≧55% HG, ≧60% HG, ≧65% HG, ≧70% HG, or even ≧75% HG. Further, the spline height HS can be very similar to the groove height HG. For example, HS can be ≦100% HG, such as ≦99% HG, ≦98% HG, ≦97% HG, ≦96% HG, or even ≦95% HG. In another aspect, HS can be within a range between and including any of the values described herein. - In another aspect, the
spline engagement groove 130 may include a cross-sectional groove width (i.e., axial length relative to the axis 101), WG (FIG. 9A ). The spline can include a cross-sectional spline width, WS (FIGS. 4A and 9B ). The spline width WS can be smaller than the groove width WG. For example, WS can be ≧80% WG, such as ≧85% WG, ≧90% WG, ≧95% WG, ≧96% WG, ≧97% WG, ≧98% WG, or even ≧99% WG. Further, the spline width WS can be almost identical to the groove width WG. For example, WS can be ≦100% WG, such as ≦99.9% HG, ≦98.8% HG, ≦99.7% HG, ≦99.6% HG, or even ≦99.5% HG. WS can be within a range between and including any of the values described herein. - In a particular aspect, the
tubular body 102 can include one or more polymers. For example, thetubular body 102 can include polyolefin. Further, thetubular body 102 can include polyethylene. Alternately, thetubular body 102 can include polyvinyl chloride (PVC). In other aspects, thetubular body 102 can include a composite material, such as fiberglass, carbon fiber, or other fiber reinforced plastic materials, or even a combination of the materials described herein. In one embodiment, thetubular body 102 may not include one or more of these materials. For example, thetubular body 102 may not comprise a polymer. - In another aspect, the pipe joint assembly established by the male 104 and
female end 106 can have a tensile strength, TS. The TS can be ≧500 lbs/in2 of cross-sectional area, ACS, of thetubular body 102. Tensile strength may be measured by assembling a male/female joint of pipes together, clamping it in a tensile test machine (e.g., UTM), and pulling on the joint until it fails. Tensile strength also may be validated by performing a water pressure burst test through a joint of pipes. In this method, a joint of pipes may be assembled and capped on both ends. The sealed joint is filled with water and the internal pressure is increased until the system fails. The tensile loads applied to the joint may be calculated by multiplying the water pressure and the outside area of the pipe and caps. - Further, the tensile strength TS can be ≧750 lbs/in2, such as ≧1000 lbs/in2. In another aspect, TS can be ≦10,000 lbs/in2, such as ≦2250 lbs/in2, ≦2000 lbs/in2, ≦1750 lbs/in2, or even ≦1500 lbs/in2. Further, TS can be within a range between and including any of the values described herein. Moreover, the assembled pipes can have an outer cross-sectional shape that is substantially uniform along the entire length of the pipe assembly.
- In another aspect, the pipe joint assembly can include a compressive strength, CS. The CS may be measure like the TS, but in a reverse direction. For example, the CS can be ≧2500 lbs/in2 of cross-sectional area, A, of the
tubular body 102. In other examples, CS can be ≧3000 lbs/in2, or even ≧40001 lbs/in2. Moreover, CS can be ≦35,000 lbs/in2, such as ≦25,000 lbs/in2, ≦20,000 lbs/in2, ≦15,000 lbs/in2, or even ≦10,000 lbs/in2. CS can also be within a range between and including any of the values described herein. - The pipe joint assembly can include a leak pressure, PL. The PL may include at least one or vacuum testing and pressure testing. The PL may be tested by forming a pipe joint of at least two pipes, capping the ends, filling the joint with a fluid, and then vacuum and/or pressure testing the system. In one example, the leak pressure PL can be ≧−10 lbs/in2 of surface area, AS, of an inner wall of the tubular body. In other examples, PL can be ≧−5 lbs/in2, ≧−3 lbs/in2, or even ≦−1 lbs/in2. Further, PL can be ≦1000 lbs/in2, such as ≦955 lbs/in2, ≦755 lbs/in2, or even ≦100 lbs/in2. PL can also be within a range between and including any of the values described herein.
- As indicated in
FIG. 3 , thepipe 100 can also include a seal groove or sealingmember groove 140 that can be formed in theinternal wall 120 of thefemale end 106 of thetubular body 102. Moreover, a seal or sealing member 142 (FIGS. 5 and 8 ) can be disposed within the sealingmember groove 140. Theseal 142 may be formed from a variety of materials, such as elastomers, rubber, etc. In one version, the seal may have a selected hardness. For example, the seal hardness can be in a range of about 35 Shore A to about 115 Shore A. Theseal 142 can compress and/or deform against the smooth exterior surface of thefirst engagement groove 112. There can be a clearance betweenouter surface 110 andinner surface 120 in a joint of pipes. Theseal 142 can deform into the clearance to fill it. Thus, in an embodiment, there is no expansion or deformation offemale end 106 whenmale end 104 is joined thereto. - In a particular aspect, the sealing
member 142 is configured to deform as themale end 104 of onepipe 100 is inserted within thefemale end 106 of anotherpipe 100. Specifically, the sealingmember 142 can be configured to engage theexternal wall 110 of themale end 104 of thetubular body 102 and form a sealed joint between thefemale end 106 and themale end 104 of therespective pipes 100. - In some versions, the sealing
member 142 can include an elastic material. Moreover, the sealingmember 142 can include rubber. In a particular aspect, the sealingmember 142 can include a composite structure that includes a support structure and a sealing member. - In a particular aspect, the
tubular body 102 can include an outer diameter, ODTB (FIG. 10 ). The pipe joint assembly can include an outer diameter, ODPJA. In one version, ODPJA=ODTB, or they can be substantially equal. Further, the tubular body can include a wall thickness, TW. A ratio of TW:ODTB can be <1:20, such as ≦1:19, ≦1:18, ≦1:17, ≦1:16, or even ≦1:15. Further, TW:ODTD can be ≧1:10, or ≧1:11, or ≧1:12. - In yet another aspect, the pipe joint assembly can include a flexural strength, FS. The FS can be measured at the pipe joint assembly using a three point flexural test. Flexural testing may be performed by assembling a pipe joint, capping the ends of the system, filling it with water at a nominal pressure, and then bending the system in a three-point press until leakage is noted at the joint. FS can be ≦2500 psi, such as ≦3500 psi, ≦5000 psi, or even ≦7500 psi. Further, FS can be ≦50,000 psi, such as ≦35,000 psi, ≦25,000 psi, or even ≦15,000 psi. The FS can be in a range between any of these values.
- The flush pipe joint can include average outside diameter, ODA (
FIG. 10 ). The ODA can be a relatively small diameter. In addition, the ODA can have a tight tolerance. For example, ODA can be ≧2.375″±0.011, such as ODA≧6.275″±0.011″, ≧8.400″±0.012″, ≧9.440″±0.014″, ≧10.500″±0.015″, ≧12.500″±0.018″, or even ≧15.300″±0.023″. In other examples, ODA can be a relatively larger diameter, such as ≦36.300″±0.054″, ≦30.300″±0.045″, or even ≦24.300″±0.036″. In other embodiments, the ODA can be ±0.100″. The ODA can be within a range between and including any of the values described herein. - Other embodiments of the flush pipe joint can include an ODA (
FIG. 10 ), that is very consistent. For example, ODA can be about ±0.5%. In another version, the ODA can be about ±0.4%, such as about ±0.3%, about ±0.2%, about ±0.19%, about ±0.18%, about ±0.17%, about ±0.16%, about ±0.15%, or even about ±0.14%. The ODA can be within a range between and including any of the values described herein. - Similarly, the flush pipe joint can include an average inside diameter, IDA, that is also very consistent. For example, IDA can be about ±0.5%. In another version, the IDA can be about ±0.4%, such as about ±0.3%, about ±0.2%, about ±0.19%, about ±0.18%, about ±0.17%, about ±0.16%, about ±0.15%, or even about ±0.14%. The IDA can be within a range between and including any of these values described herein.
- Accordingly, the pipe joint assembly comprises two or more pipes that can have a very consistent outer diameter, a very consistent inner diameter, or both. Thus, the pipe joint assembly has an unusually high level of concentricity between the pipes (e.g., at the ID, the OD and/or at the interfaces therebetween) that make up the joint. For example, the pipe can include a concentricity relative to a pipe axis, wherein the concentricity at an outside diameter, an inside diameter and an interface between pipe segments is about ±0.5%. Such consistency in all pipes in the pipe joint assembly enables easier installation of a pipeline, as well as ease of fluid flow through the interior of the pipeline in operation.
- In a particular aspect, the
tubular body 102 can include an inner diameter, IDTB. The pipe joint assembly can include an inner diameter, IDPJA. In one version, IDPJA=IDTB. Further, thetubular body 102 can include a wall thickness, TW. A ratio of TW:IDTB can be <1:20, such as ≦1:19, ≦1:18, ≦1:17, ≦1:16, or even ≦1:15. Further, TW:IDTB can be ≧1:10, or ≧1:11, or ≧1:12. The ratio also can be in a range between any of these values. - Embodiments of the
pipe 100 can have a diameter ratio (DR). Pipe DR (or SDR), as defined by Uni-Bell, help classify various thicknesses of nominally sized pipe. The terms “dimension ratio” and “standard dimension ratio” are widely used in the pipe industry (abbreviated DR and SDR). Both terms refer to the same ratio, which is a dimensionless term that is obtained by dividing the average outside diameter of the pipe by the minimum pipe wall thickness. -
SDR=DR=OD A /t - where: ODA=average outside diameter
- t=minimum wall thickness
- DR classifications may be characterized by:
- (a) the lower the DR number, the thicker the pipe wall;
- (b) the pressure capacity of a particular DR is constant regardless of diameter; and
- (c) the structural strength of a particular DR is constant regardless of diameter. In the definition of a pipe's pressure rating, the hydrostatic design stress (S), rather than the hydrostatic design basis, is used in calculations. The design stress is the value obtained when HDB is divided by a desired factor of safety (F).
- In a particular embodiment, DR can be >7, >13, or >15. Further, DR can be ≦32, such as ≦26, or even ≦21. DR can be within a range between and including any of the values described herein.
- In another aspect, the
pipe 100 can include an impact strength, S. The impact strength S can be measured in a number of industry standard ways. For base material, notches, izod or charpy testing is performed. For pipe impact test (from Uni-Bell), pipe samples are placed on a specified holder and are subjected to impact by a metal tip of defined geometry and weight falling from a specified height. Impact resistance by PVC pipe may be reported in foot-pounds (Joules) of energy. Impact resistance testing is conducted in accordance with ASTM D 2444. - In some embodiments, the impact strength S, at 23° C., can be ≧284 J (210 ft·lbs), such as ≧299 J (220 ft·lbs). Further, S, at 23° C. can be ≦2000 J (1475 ft·lbs), such as ≦1750 J (1290 ft·lbs), ≦1500 J (1106 ft·lbs), ≦1250 J (921 ft·lbs), or ≦1000 J (737 ft·lbs). The impact strength can be in a range between any of these values.
- The flush
joint pipe 100 can be installed within a bore that is formed by a micro-boring or micro-tunneling machine. As shown inFIG. 10 , thepipe 100 can include an outer diameter, ODP, and the bore can include an inner diameter, IDB. The ODP can be very similar to the IDB. For example, a ratio of IDB:ODP can be ≧1, such as ≧1.01, ≧1.02, ≧1.03, ≧1.04, or even ≧1.05. Moreover, IDB:ODP can be ≦1.25, such as ≦1.20, ≦1.15, or even ≦1.10. - In another aspect, the micro-tunneling machine can include an outer diameter, ODMTM. For ease of illustration, ODMTM is depicted as the inner diameter IDB of an earthen bore in
FIG. 10 . However, in practice, ODMTM would be slightly smaller than the inner diameter IDB of the earthen bore shown. The ODMTM can be very similar to the ODP. For example, the ratio ODMTM:ODP can be ≧1, such as ≧1.01, ≧1.02, ≧1.03, ≧1.04, or even ≧1.05. In other versions, OMTM:ODP can be ≦1.25, such as ≦1.20, ≦1.15, or even ≦1.10. - In another embodiment, a method of installing a pipe can include a retrofit of existing or previously installed pipeline. For example, the method can include locating and exposing a previously installed pipeline in a bore hole; pulling a cutting head through the previously installed pipeline; breaking the previously installed pipeline with the cutting head and expanding the bore hole to a larger size by pushing pipe fragments of the previously installed pipeline into soil surrounding the bore hole; and then pulling a new pipe having a flush joint into the enlarged bore hole behind the cutting head. The cutting head can be static or dynamic, and can include at least one of hammering and turning cutters, and pneumatic systems.
- With the configuration of structure described herein, the flush
joint pipe 100 provides a pipe that can be installed using a micro-tunneling machine. The pipe can be pushed or pulled through a bore and can be installed directly in the earth in direct contact with the earth. The pipe can be a smooth walled pipe that is essentially free of protuberances. Further, the pipe is extremely strong in both compression and tension. Moreover, flexural strength of the pipe is relatively high and can allow the pipe to be installed over non-linear pathways. - One or more of the pipes can be installed by within a subterranean location by forming a bore in the subterranean location, e.g., using a micro-tunneling machine or a micro-boring machine. The bore can include an inner wall that at least partially includes subterranean material such as rocks, dirt, etc. A first polymeric pipe segment can be moved into the bore. Then, a second polymeric pipe segment can be coupled to the first polymeric pipe segment using a mechanical restraint, such as the spline described herein. The assembled or coupled first and second pipes can have a cross-sectional shape that is essentially uniform along the length of the first and second pipes. The first and second polymeric pipe segments can be moved into the subterranean location and the first and second polymeric pipes can be in direct contact with the inner wall of the earthen bore.
- In another aspect, the method can include coupling the first polymeric pipe segment to a micro-tunneling machine and running, or otherwise operating, a cutting head on the micro-tunneling machine while moving one or more polymeric pipe segments. Coupling the second polymeric pipe segment to the first polymeric pipe segment can include engaging an end of the second polymeric pipe segment with an end of the first polymeric pipe segment such that a spline engagement groove is established between the first pipe and the end of the second pipe and inserting a spline into the spline engagement groove to establish a polymeric pipe joint assembly.
- In a particular aspect, the pipes can be deployed directly into the subterranean location without an outer casing around the one or more polymeric pipe segments. Further, the one or more polymeric pipe segments can be pushed into the bore or pulled through the bore.
- Those of ordinary skill in the art will recognize that there may be other applications that can utilize a pipe having one or more of the characteristics described herein.
- The above-disclosed subject matter is to be considered illustrative, and not restrictive, and the appended claims are intended to cover all such modifications, enhancements, and other embodiments, which fall within the true scope of the present invention. Thus, to the maximum extent allowed by law, the scope of the present invention is to be determined by the broadest permissible interpretation of the following claims and their equivalents, and shall not be restricted or limited by the foregoing detailed description.
- In addition, in the foregoing Detailed Description, various features can be grouped together or described in a single embodiment for the purpose of streamlining the disclosure. This disclosure is not to be interpreted as reflecting an intention that the claimed embodiments require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive subject matter can be directed to less than all features of any of the disclosed embodiments. Thus, the following claims are incorporated into the Detailed Description, with each claim standing on its own as defining separately claimed subject matter.
Claims (27)
1. A pipe, comprising:
a tubular body having a male end and a female end, the male end comprises an external surface having a first engagement groove, the female end comprises an internal surface having an second engagement groove and an aperture extending from an outer surface of the tubular body to the second engagement groove, the female end is configured to receive the male end of another pipe such that the first engagement groove of the male end of a first pipe aligns with the second engagement groove of the female end of a second pipe to establish a spline engagement groove; and
a flexible spline configured to fit through the aperture and into the engagement groove to engage the first engagement groove and the second engagement groove to prevent the male end of the first pipe from withdrawing from the female end of the second pipe to establish a pipe joint assembly.
2. The pipe of claim 1 , wherein the spline engagement groove has a groove length, LG; and
the flexible spline has a spline length, LS, and LS≦LG.
3. The pipe of claim 2 , wherein LS≦95% LG.
4. The pipe of claim 2 , wherein LS≧50% LG.
5. The pipe of claim 1 , wherein the spline engagement groove comprises a cross-sectional groove height, HG, and the flexible spline comprises a cross-sectional spline height, HS, wherein HS≧50% HG.
6. The pipe of claim 5 , wherein HS≦100% HG.
7. The pipe of claim 1 , wherein the spline engagement groove comprises a cross-sectional groove width, WG, and the spline comprises a cross-sectional spline width, WS, wherein WS≧80% WG.
8. The pipe of claim 7 , wherein WS≦100% WG.
9. The pipe of claim 1 , wherein the tubular body comprises at least one of a polymer, polyvinyl chloride (PVC), polyethylene, polyolefin, a composite material, fiberglass, carbon fiber, fiber reinforced plastic material or any combination thereof.
10. The pipe of claim 1 , wherein the pipe joint assembly comprises a tensile strength, TS≧500 lbs/in2 of cross-sectional area, ACS, of the tubular body.
11. The pipe of claim 10 , wherein the TS≦10,000 lbs/in2.
12. The pipe of claim 1 , wherein the pipe joint assembly comprises a compressive strength, CS≧2500 lbs/in2 of cross-sectional area, A, of the tubular body.
13. The pipe of claim 12 , wherein the CS≦35,000 lbs/in2.
14. The pipe of claim 1 , wherein the pipe joint assembly comprises a leak pressure, PL, ≧−10 lbs/in2 of surface area, AS, of an inner wall of the tubular body.
15. The pipe of claim 14 , wherein PL, ≦1000 lbs/in2.
16. The pipe of claim 1 , further comprising a sealing member groove formed in the internal surface of the female end of the tubular body.
17. The pipe of claim 16 , further comprising a sealing member disposed within the sealing member groove.
18. The pipe of claim 17 , wherein the sealing member is configured to deform as the male end of the first pipe is inserted within the female end of the second pipe.
19. The pipe of claim 17 , wherein the sealing member is configured to engage an outer wall of the male end of the first pipe and form a sealed joint with the female end of the second pipe.
20. The pipe of claim 17 , wherein the sealing member comprises at least one of an elastic material, rubber, a composite structure having a support structure and a sealing member, or any combination thereof.
21. The pipe of claim 1 , wherein the tubular body comprises an outer cross-sectional shape that is substantially uniform along an entire length of the pipe.
22. The pipe of claim 1 , wherein the tubular body comprises an outer diameter, ODTB, and the pipe joint assembly comprises an outer diameter, ODPJA, wherein ODPJA is substantially equal to ODTB.
23. The pipe of claim 1 , wherein the tubular body comprises an outer diameter, ODTB, and a wall thickness, TW, wherein a TW:ODTB<1:20.
24. The pipe of claim 23 , wherein TW:ODTB≧1:10.
25. The pipe of claim 1 , wherein the pipe joint assembly comprises a flexural strength, FS, and the FS≧2500 psi.
26. The pipe of claim 25 , wherein the FS≦50,000 psi.
27. The pipe of claim 1 , wherein the pipe comprises a concentricity relative to a pipe axis, wherein the concentricity at an outside diameter, an inside diameter and an interface between pipe segments is about ±0.5%.
Priority Applications (1)
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US14/015,231 US20140182732A1 (en) | 2012-12-31 | 2013-08-30 | Flush joint pipe |
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US14/015,231 US20140182732A1 (en) | 2012-12-31 | 2013-08-30 | Flush joint pipe |
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US14/015,224 Active 2033-10-02 US9200732B2 (en) | 2012-12-31 | 2013-08-30 | Flush joint pipe |
US14/015,235 Active 2034-01-15 US9568120B2 (en) | 2012-12-31 | 2013-08-30 | Flush joint pipe |
US14/841,917 Abandoned US20150369395A1 (en) | 2012-12-31 | 2015-09-01 | Flush joint pipe |
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US14/841,917 Abandoned US20150369395A1 (en) | 2012-12-31 | 2015-09-01 | Flush joint pipe |
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US9200732B2 (en) | 2012-12-31 | 2015-12-01 | North American Specialty Products Llc | Flush joint pipe |
WO2018165658A1 (en) * | 2017-03-10 | 2018-09-13 | Aqseptence Group Inc. | Utility conduit |
EP3587887A1 (en) * | 2018-06-29 | 2020-01-01 | Varco I/P Inc. | High pressure composite pipe joining system |
CN114286909A (en) * | 2019-07-24 | 2022-04-05 | 阿奎塞腾斯集团有限公司 | Pipe length and related method of pipe connection |
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US9339901B2 (en) * | 2014-02-06 | 2016-05-17 | Stander Inc. | Universal support poles, kits therefor, and methods related thereto |
KR101640753B1 (en) * | 2016-05-11 | 2016-07-19 | 김수열 | Ring bit structure connected without bolt or welding connection |
TWD184172S (en) | 2016-11-02 | 2017-07-11 | 史丹德公司 | Support pole with adjustable handles |
CN109027418A (en) * | 2018-08-30 | 2018-12-18 | 上海隧道工程有限公司 | Pipe jacking tunnel concrete tube coupling |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9200732B2 (en) | 2012-12-31 | 2015-12-01 | North American Specialty Products Llc | Flush joint pipe |
US9568120B2 (en) | 2012-12-31 | 2017-02-14 | North American Specialty Products Llc | Flush joint pipe |
WO2018165658A1 (en) * | 2017-03-10 | 2018-09-13 | Aqseptence Group Inc. | Utility conduit |
US11502495B2 (en) | 2017-03-10 | 2022-11-15 | Aqseptence Group, Inc. | Utility conduit |
EP3587887A1 (en) * | 2018-06-29 | 2020-01-01 | Varco I/P Inc. | High pressure composite pipe joining system |
US11703170B2 (en) | 2018-06-29 | 2023-07-18 | Varco I/P, Inc. | High pressure composite pipe joining system |
CN114286909A (en) * | 2019-07-24 | 2022-04-05 | 阿奎塞腾斯集团有限公司 | Pipe length and related method of pipe connection |
Also Published As
Publication number | Publication date |
---|---|
US20140186121A1 (en) | 2014-07-03 |
US9568120B2 (en) | 2017-02-14 |
US9200732B2 (en) | 2015-12-01 |
WO2014105222A1 (en) | 2014-07-03 |
US20150369395A1 (en) | 2015-12-24 |
US20140183861A1 (en) | 2014-07-03 |
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Owner name: NORTH AMERICAN SPECIALTY PRODUCTS LLC, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:COOGAN, JOHN M.;STOTT, JOHN R.;GROSS, STEVE B.;AND OTHERS;SIGNING DATES FROM 20130911 TO 20140120;REEL/FRAME:032004/0551 |
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