WO2021075297A1 - リング体、管継手および管の接合方法 - Google Patents
リング体、管継手および管の接合方法 Download PDFInfo
- Publication number
- WO2021075297A1 WO2021075297A1 PCT/JP2020/037731 JP2020037731W WO2021075297A1 WO 2021075297 A1 WO2021075297 A1 WO 2021075297A1 JP 2020037731 W JP2020037731 W JP 2020037731W WO 2021075297 A1 WO2021075297 A1 WO 2021075297A1
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- WIPO (PCT)
- Prior art keywords
- pipe
- peripheral surface
- ring
- socket
- receiving port
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 16
- 238000003780 insertion Methods 0.000 claims abstract description 139
- 230000037431 insertion Effects 0.000 claims abstract description 139
- 230000002093 peripheral effect Effects 0.000 claims description 132
- 238000003825 pressing Methods 0.000 claims description 13
- 230000002265 prevention Effects 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 abstract 2
- 238000012856 packing Methods 0.000 description 11
- 208000031872 Body Remains Diseases 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
Classifications
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- 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
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
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- 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
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/035—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed around the spigot end before connection
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- 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
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/04—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings in which sealing rings are compressed by axially-movable members
Definitions
- the present invention relates to a ring body provided in a pipe joint having a detachment prevention function, a pipe joint provided with a ring body, and a method of joining pipes.
- FIG. 12 there is a pipe joint 109 in which the insertion port 104 of the first pipe 103 is inserted into the receiving port 102 of the second pipe 101.
- a lock ring accommodating groove 105 is formed on the inner circumference of the receiving port 102, and the lock ring 106 is accommodated in the lock ring accommodating groove 105.
- On the opening end side of the receiving port 102 with respect to the lock ring 106 a packing 107 that is compressed in the pipe radial direction and seals between the inner peripheral surface of the receiving port 102 and the outer peripheral surface of the insertion port 104 is provided.
- An insertion protrusion 108 is formed on the outer periphery of the tip of the insertion opening 104.
- a push ring 110 for pressing the packing 107 toward the back side of the receiving port is provided.
- the push ring 110 is connected to the open end of the receiving port 102 via a plurality of bolts 111 and nuts 112.
- the push ring 110 and the opening end face of the receiving port 102 are not in contact with each other, and a predetermined gap 113 is formed between the pushing ring 110 and the opening end face of the receiving port 102.
- the backup ring ring 114 is fitted between the inner peripheral surface of the receiving port 102 and the outer peripheral surface of the insertion port 104.
- the insertion insertion jig 116 is a ring having a diameter-expandable split structure in which one portion is cut, and has an inclined surface 117. The method of joining the pipes using the insertion insertion jig 116 will be described below.
- the insertion insertion jig 116 is fitted on the outer circumference of the insertion opening 104.
- the inclined surface 117 of the insertion opening insertion jig 116 comes into contact with the packing contact surface 118 of the receiving port 102, so that the receiving port 102
- the insertion port 104 moves in the pipe radial direction, and the deviation between the pipe axis of the first pipe 103 and the pipe axis of the second pipe 101 in the pipe radial direction is reduced, so that the insertion port 104 is inserted into the receiving port 102.
- the centering of the mouth 104 is automatically performed.
- the insertion protrusion 108 pushes the lock ring 106 open, and when the insertion protrusion 108 passes through the lock ring 106 and reaches the back side of the receiving port 102, the diameter of the lock ring 106 is reduced. Then, it hugs the outer circumference of the insertion slot 104.
- the insertion slot insertion jig 116 is expanded in diameter and removed from the insertion slot 104.
- the backup ring ring 114 and the packing 107 are inserted between the outer circumference of the insertion port 104 and the inner circumference of the receiving port 102, the bolt 111 and the nut 112 are tightened, and the packing is carried out by the push ring 110. Press 107 toward the back of the socket. As a result, the first pipe 103 and the second pipe 101 are joined.
- the outer circumference of the insertion port 104 and the inner circumference of the receiving port 102 are sealed with packing 107. Further, by engaging the insertion port protrusion 108 with the lock ring 106 from the back side of the receiving port in the separating direction A of the insertion port 104, it is possible to prevent the insertion port 104 from being separated from the receiving port 102.
- the backup ring ring 114 is the outer periphery of the insertion port 104 and the receiving port. Since it is fixed between the inner circumference of the 102 and the inner circumference of the packing 107, the back-up ring ring 114 prevents the packing 107 from moving toward the back side, and the back end portion of the packing 107 does not come into contact with the lock ring 106. ..
- the pipe joint 109 and the insertion insertion jig 116 refer to Japanese Patent Application Laid-Open No. 2002-340257, for example.
- An object of the present invention is to provide a ring body, a pipe joint, and a method for joining pipes, which can reduce the labor and labor required for joining pipes to each other.
- the insertion port of the first tube of the present invention is inserted into the receiving port of the second tube,
- a lock ring accommodating groove is formed on the inner circumference of the socket,
- the lock ring is housed in the lock ring storage groove,
- a seal ring that is compressed in the pipe radial direction and seals between the inner peripheral surface of the socket and the outer peripheral surface of the insertion port is provided on the opening end side of the socket rather than the lock ring.
- An insertion protrusion is formed on the outer circumference of the insertion opening,
- a ring body provided in a pipe joint capable of preventing the insertion port from detaching from the socket by engaging the lock ring from the back side of the socket in the direction of the insertion port withdrawal is a ring body.
- the main body has a main body that is inserted between the inner peripheral surface of the socket and the outer peripheral surface of the socket and is provided in the pipe joint, and a slip stopper that prevents the main body from shifting toward the open end side of the socket.
- the main body is characterized in that the insertion port is moved in the pipe radial direction with respect to the receiving port to reduce the deviation between the pipe axis of the first pipe and the pipe axis of the second pipe in the pipe radial direction. And.
- the main body of the ring body pipes the insertion slot. It is moved in the radial direction to reduce the deviation in the pipe axis between the tube axis of the first tube and the tube axis of the second tube. As a result, the centering of the pipe can be performed.
- the ring body is arranged in the pipe joint, the first pipe and the second pipe are joined while the ring body is provided between the inner peripheral surface of the receiving port and the outer peripheral surface of the insertion port. Even after joining, the ring body remains provided between the inner peripheral surface of the socket and the outer peripheral surface of the insertion port, and the ring body is formed between the inner peripheral surface of the socket and the outer peripheral surface of the insertion port. There is no need to remove it from the gap to the outside. As a result, the labor and labor required for joining the pipes can be reduced. Further, the slip prevention member can prevent the main body of the ring body from shifting from between the inner peripheral surface of the receiving port and the outer peripheral surface of the insertion port toward the opening end side of the receiving port.
- the tip end portion in the pipe axis direction can come into contact with the inner peripheral surface of the receiving port, and the base end portion in the pipe axis direction is provided on the inner peripheral side of the main body portion. It is preferable that it is.
- the slip-preventing member keeps contacting the inner peripheral surface of the receiving port with the tip of the slip-preventing member in contact with the inner peripheral surface of the receiving port. Since the ring body is stretched between the ring body and the ring body, it is possible to prevent the ring body from shifting toward the opening end side (disengagement direction side) of the receiving port.
- the pipe joint provided with the ring body of the present invention is characterized in that the ring body is fitted between the inner peripheral surface of the receiving port and the outer peripheral surface of the insertion port. According to the pipe joint of the present invention, it is preferable that the tip end portion of the slip-preventing member of the ring body is in contact with the inner peripheral surface of the receiving port.
- the tip portion of the slip prevention member comes into contact with the inner peripheral surface of the receiving port, so that the main body of the ring body is opened from between the inner peripheral surface of the receiving port and the outer peripheral surface of the insertion port. It is possible to prevent it from shifting to the side.
- a seal ring insertion space is formed over the entire circumference between the inner peripheral surface of the socket and the outer peripheral surface of the socket on the opening end side of the socket with respect to the ring body.
- the seal ring is inserted into the seal ring insertion space,
- the inner peripheral surface of the receiving port has a receiving port protrusion protruding inward in the pipe radial direction between the lock ring accommodating groove in the pipe axis direction and the seal ring insertion space.
- the main body of the ring body is preferably inserted between the inner peripheral surface of the receiving port protrusion and the outer peripheral surface of the insertion port.
- a push ring for pressing the seal ring toward the back side of the socket is provided at the open end of the socket.
- the push ring abuts on the open end face of the socket in the pressing direction for pressing the seal ring.
- the ring body is provided between the lock ring and the seal ring in the pipe axis direction, and is provided. It is preferable that a gap is formed between the seal ring and the ring body in the pipe axis direction.
- the push ring cannot push the seal ring further into the back side of the receiving port because it comes into contact with the opening end surface of the receiving port.
- the seal ring is not pushed into the back side of the receiving port by an excessive pressing force, the back end portion of the seal ring does not come into contact with the ring body, and damage to the ring body can be prevented.
- the method of joining pipes in the above-mentioned pipe joint according to the present invention is as follows. Set the lock ring in the lock ring accommodating groove of the receiving port of the second pipe, and set it.
- the insertion port of the first tube is inserted into the receiving port, and the insertion port protrusion is passed through the lock ring from the opening end side of the receiving port to the back side of the receiving port.
- the ring body fitted in the first tube in advance is moved in the direction of the tube axis and inserted from the opening end of the socket between the inner peripheral surface of the socket and the outer peripheral surface of the socket.
- the seal ring is pushed from the open end of the socket between the inner peripheral surface of the socket and the outer peripheral surface of the insertion port.
- the ring body is moved in the direction of the tube axis and inserted between the inner peripheral surface of the socket and the outer peripheral surface of the socket from the opening end of the socket, whereby the main body of the ring is formed.
- the insertion port is moved in the pipe radial direction to reduce the deviation between the pipe axis of the first pipe and the pipe axis of the second pipe in the pipe radial direction.
- the ring body is inserted between the inner peripheral surface of the receiving port and the outer peripheral surface of the insertion port.
- the first pipe and the second pipe can be joined while being provided in the above. As a result, it is not necessary to remove the ring body from between the inner peripheral surface of the receiving port and the outer peripheral surface of the insertion port to the outside, and the labor and labor required for joining the pipes can be reduced.
- the first pipe and the second pipe can be joined while the ring body is provided in the pipe joint, and the ring body is the inner peripheral surface of the receiving port even after the joining. It remains provided between the and the outer peripheral surface of the insertion port, and it is not necessary to remove the ring body from between the inner peripheral surface of the receiving port and the outer peripheral surface of the insertion port to the outside. As a result, the labor and labor required for joining the pipes can be reduced.
- the pipe joint 1 has a detachment prevention function, and the insertion port 5 of the first pipe 4 is inserted into the receiving port 3 of the second pipe 2.
- ductile iron pipes and the like are used for these pipes 2 and 4.
- a lock ring accommodating groove 7 is formed on the inner peripheral surface of the receiving port 3 over the entire circumference.
- the lock ring accommodating groove 7 accommodates the lock ring 8 and the annular pressing member 9 that presses the lock ring 8 inward in the pipe radial direction.
- the lock ring 8 is a ring having a split structure in which one portion is cut, and the width 12 of the cut portion 11 is enlarged by the expander 13 to expand the diameter of the enlarged unit 13. It has elasticity so that it can be reduced in diameter and returned to the original diameter by being removed from the cut portion 11.
- an insertion protrusion 15 is formed on the outer circumference of the insertion 5 over the entire circumference.
- the inner peripheral surface of the receiving port 3 has a tapered portion 16 whose diameter gradually decreases from the opening end surface of the receiving port 3 to the back side and a straight portion extending straight from the back end to the back side of the tapered portion 16. It has a 17 and a socket protrusion 18 protruding inward in the pipe radial direction from the inner end of the straight portion 17.
- the straight portion 17 is formed with the same inner diameter in the pipe axis direction.
- the receiving port protrusion 18 is provided over the entire circumference between the straight portion 17 and the lock ring accommodating groove 7 in the pipe axis direction, and has an inner diameter smaller than that of the straight portion 17.
- a seal ring 19 that is compressed in the pipe radial direction and seals between the inner peripheral surface of the receiving port 3 and the outer peripheral surface of the insertion port 5 on the opening end side of the receiving port with respect to the lock ring 8.
- the seal ring 19 is a rubber ring (rubber ring) and is inserted into the seal ring insertion space 20.
- the seal ring insertion space 20 is formed over the entire circumference between the tapered portion 16 and the straight portion 17 of the receiving port 3 and the outer peripheral surface of the insertion port 5.
- the receiving port protrusion 18 is located between the lock ring accommodating groove 7 and the seal ring insertion space 20 in the pipe axis direction.
- a push ring 22 for pressing the seal ring 19 toward the back side of the socket is provided at the open end of the socket 3.
- the push ring 22 has a contact portion 23 that abuts on the open end surface of the socket 3 in the pressing direction B that presses the seal ring 19, and is connected to the open end of the socket 3 by a plurality of bolts 25 and nuts 26. Has been done.
- a ring body 31 is provided between the lock ring 8 and the seal ring 19 in the pipe axis direction. As shown in FIGS. 3 to 5, the ring body 31 is a ring having a halved structure in which one portion is cut, and is manufactured of a material such as an elastic resin, and has an annular halved structure.
- the main body portion 32 and the slip prevention member 33 for preventing the main body portion 32 from shifting toward the opening end side of the receiving port 3 are provided.
- the main body portion 32 has a quadrangular cross-sectional shape, and is inserted between the inner peripheral surface of the receiving port protrusion 18 and the outer peripheral surface of the insertion port 5, so that the insertion port 5 is piped to the receiving port 3.
- the deviation between the pipe axis 28 of the first pipe 4 (see FIG. 11) and the pipe axis 29 of the second pipe 2 (see FIG. 11) in the pipe radial direction is reduced.
- the cross-sectional shape of the main body 32 is not limited to a quadrangle, but it is preferable that the outer peripheral surface 35 and the inner peripheral surface 36 of the main body 32 are parallel, and in this case, the main body 32 receives. It is stably provided between the inner peripheral surface of the mouth protrusion 18 and the outer peripheral surface of the insertion port 5.
- the height H in the radial direction from the inner peripheral surface 36 to the outer peripheral surface 35 of the main body portion 32 is the difference between the allowable minimum value of the inner diameter of the receiving port protrusion 18 and the allowable maximum value of the outer diameter of the insertion port 5. It is set to less than half the value.
- the tip portion of the slip prevention member 33 in the pipe axis direction can come into contact with the straight portion 17 on the inner peripheral surface of the receiving port 3, and the base end portion in the pipe axis direction is integrally provided on the inner peripheral side of the main body portion 32. It is a ring that expands in diameter in a conical shape from the base end to the tip, and is a member having a split structure. A gap 38 is formed over the entire circumference between the seal ring 19 and the ring body 31 in the pipe axis direction. The method of joining the pipes 2 and 4 in the pipe joint 1 as described above will be described below.
- the ring body 31, the seal ring 19, and the push ring 22 are externally fitted to the first pipe 4 in advance. Then, the pressing member 9 and the lock ring 8 are accommodated in the lock ring accommodating groove 7 of the second pipe 2. Then, as shown in FIG. 2, the width 12 of the cut portion 11 of the lock ring 8 is enlarged by the magnifier 13 to expand the diameter of the lock ring 8. Next, as shown in FIG. 6, the L-shaped diameter-expanding holder 40 is inserted into the cut portion 11 of the lock ring 8, and the expander 13 is removed to maintain the lock ring 8 in the expanded state.
- the insertion port 5 is inserted into the receiving port 3, and the insertion opening protrusion 15 is passed from the opening end side of the receiving port 3 in the lock ring 8 to the back side of the receiving port 3.
- the insertion port protrusion 15 easily passes through the inside of the lock ring 8.
- the diameter-expanding holder 40 is removed to reduce the diameter of the lock ring 8. As a result, the lock ring 8 clings to the outer circumference of the insertion slot 5.
- the ring body 31 is moved in the pipe axis direction and pushed from the opening end of the receiving port 3 between the inner peripheral surface of the receiving port 3 and the outer peripheral surface of the insertion port 5. It is inserted between the inner peripheral surface of the receiving port protrusion 18 and the outer peripheral surface of the insertion port 5.
- the main body 32 of the ring body 31 moves the insertion port 5 in the pipe radial direction, and the pipe axis 28 of the first pipe 4 and the pipe shaft of the second pipe 2 It reduces the deviation from the center 29 in the pipe radial direction. Therefore, the pipe axis 28 of the first pipe 4 substantially coincides with the pipe axis 29 of the second pipe 2, and the pipes 2 and 4 can be centered.
- the tube axis 28 of the first tube 4 is the second tube before the ring body 31 is inserted between the inner peripheral surface of the receiving port protrusion 18 and the outer peripheral surface of the insertion port 5.
- the ring body 31 is displaced upward with respect to the tube axis 29 of 2
- the ring body 31 is inserted between the inner peripheral surface of the receiving port protrusion 18 and the outer peripheral surface of the insertion port 5 as shown in FIG.
- the insertion port 5 moves downward with respect to the receiving port 3, and the deviation between the tube axis 28 of the first tube 4 and the tube axis 29 of the second tube 2 in the pipe radial direction is reduced.
- the outer peripheral surface 35 of the main body 32 abuts on the inner peripheral surface of the receiving port protrusion 18, and the inner peripheral surface 36 of the main body 32 hits the outer peripheral surface of the insertion port 5. Get in touch. Further, as shown in FIG. 10, in the lower part of the pipe joint 1, a slight gap is formed between the outer peripheral surface 35 of the main body portion 32 and the inner peripheral surface of the receiving port protrusion 18, or the main body portion 32. A slight gap may be formed between the inner peripheral surface 36 of the above and the outer peripheral surface of the insertion port 5.
- the outer peripheral surface 35 of the main body 32 abuts on the inner peripheral surface of the receiving port protrusion 18, and the inner peripheral surface 36 of the main body 32 hits the outer peripheral surface of the insertion port 5. Get in touch. Further, in the upper part of the pipe joint 1, a slight gap is formed between the outer peripheral surface 35 of the main body 32 and the inner peripheral surface of the receiving port protrusion 18, or the inner peripheral surface 36 of the main body 32 is inserted. A slight gap may be formed between the mouth 5 and the outer peripheral surface.
- the seal ring 19 is inserted into the seal ring insertion space 20 from the opening end of the receiving port 3, and the bolt 25 and the nut 26 are inserted.
- the push ring 22 is connected to the open end portion of the receiving port 3 using the bolt 25 and the nut 26 until the contact portion 23 of the push ring 22 abuts on the opening end surface of the receiving port 3.
- the seal ring 19 is pushed into the seal ring insertion space 20 and compressed in the pipe radial direction.
- the ring body 31 Since the ring body 31 is provided between the lock ring 8 and the seal ring 19 in the pipe axis direction, the ring body 31 remains inserted between the inner peripheral surface of the receiving port protrusion 18 and the outer peripheral surface of the insertion port 5. Then, the first pipe 4 and the second pipe 2 can be joined, and even after the joining, the ring body 31 is fitted between the inner peripheral surface of the receiving port protrusion 18 and the outer peripheral surface of the insertion port 5. It is not necessary to remove the ring body 31 from between the inner peripheral surface of the receiving port 3 and the outer peripheral surface of the insertion port 5 to the outside. As a result, the labor and labor required for joining the pipes 2 and 4 can be reduced.
- the tip end portion of the slip prevention member 33 is straight on the inner peripheral surface of the receiving port 3 as shown in FIG. Since the slip prevention member 33 stretches between the inner peripheral surface of the receiving port 3 and the main body portion 32 of the ring body 31 in the state of being in contact with the portion 17, the main body portion 32 of the ring body 31 is formed by the receiving port protruding portion 18. It is possible to prevent the socket 3 from shifting from between the inner peripheral surface and the outer peripheral surface of the insertion port 5 toward the opening end side (disengagement direction A) of the receiving port 3.
- the tip portion of the slip prevention member 33 abuts on the straight portion 17 on the inner peripheral surface of the receiving port 3 over the entire circumference, but a part of the tip portion of the slip prevention member 33 in the circumferential direction is inside the receiving port 3. It may be separated from the straight portion 17 on the peripheral surface.
- the main body 32 of the ring body 31 comes into contact with the lock ring 8 as shown in FIG. It is possible to prevent the main body 32 from shifting from between the inner peripheral surface of the receiving port protrusion 18 and the outer peripheral surface of the insertion port 5 toward the back side of the receiving port (the direction opposite to the detaching direction A).
- the contact portion 23 of the push ring 22 comes into contact with the opening end surface of the receiving port 3, so that the push ring 22 cannot push the seal ring 19 further into the back side of the receiving port.
- the seal ring 19 is not pushed into the back side of the receiving port by an excessive pressing force, and the back end portion of the seal ring 19 does not come into contact with the ring body 31, thus preventing damage to the ring body 31. can do.
- the receiving port protrusion 18 is formed on the inner peripheral surface of the receiving port 3, and the ring body 31 is inserted between the inner peripheral surface of the receiving port protrusion 18 and the outer peripheral surface of the insertion port 5. Therefore, the ring body 31 can be easily attached, but the receiving port 3 may have no receiving port protrusion 18.
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Abstract
Description
挿口挿入用治具116を用いた管の接合方法を以下に説明する。
尚、上記のような管継手109および挿口挿入用治具116は例えば日本国の特開2002-340257号公報を参照。
本発明は、管同士の接合作業に要する手間と労力を軽減することが可能なリング体、管継手および管の接合方法を提供することを目的とする。
受口の内周にロックリング収容溝が形成され、
ロックリング収容溝にロックリングが収容され、
ロックリングよりも受口の開口端側において、管径方向に圧縮されて受口の内周面と挿口の外周面との間をシールするシールリングが設けられ、
挿口の外周に挿口突部が形成され、
挿口突部が挿口の離脱方向において受口の奥側からロックリングに係合することにより、挿口が受口から離脱することを防止可能な管継手に備えられるリング体は、
受口の内周面と挿口の外周面との間に挿入されて管継手内に設けられる本体部と、本体部が受口の開口端側へずれるのを防止するずれ止め部材とを有し、
本体部は、受口に対して挿口を管径方向へ移動させて、第1の管の管軸心と第2の管の管軸心との管径方向におけるずれを減少させることを特徴とする。
また、ずれ止め部材により、リング体の本体部が受口の内周面と挿口の外周面との間から受口の開口端側へずれるのを防止することができる。
本発明の管継手によれば、リング体のずれ止め部材の先端部が受口の内周面に当接していることが好ましい。
シールリングはシールリング挿入空間に挿入され、
受口の内周面は、管軸方向におけるロックリング収容溝とシールリング挿入空間との間に、管径方向の内側へ突出した受口突部を有し、
リング体の本体部は受口突部の内周面と挿口の外周面との間に挿入されていることが好ましい。
押輪はシールリングを押圧する押圧方向において受口の開口端面に当接し、
リング体は管軸方向におけるロックリングとシールリングとの間に設けられ、
管軸方向におけるシールリングとリング体との間に隙間が形成されていることが好ましい。
第2の管の受口のロックリング収容溝にロックリングをセットし、
第1の管の挿口を受口に挿入して、挿口突部をロックリングにおいて受口の開口端側から受口の奥側へ通過させ、
ロックリングを縮径して挿口の外周に抱き付かせ、
予め第1の管に外嵌しておいたリング体を、管軸方向に移動して、受口の開口端部から受口の内周面と挿口の外周面との間に挿入し、
シールリングを受口の開口端部から受口の内周面と挿口の外周面との間に押し込むことを特徴とする。
管軸方向におけるシールリング19とリング体31との間には隙間38が全周にわたり形成されている。
上記のような管継手1における管2,4の接合方法を以下に説明する。
次に、図8に示すように、拡径保持具40を取り外して、ロックリング8を縮径させる。これにより、ロックリング8が挿口5の外周に抱き付く。
Claims (7)
- 第1の管の挿口が第2の管の受口に挿入され、
受口の内周にロックリング収容溝が形成され、
ロックリング収容溝にロックリングが収容され、
ロックリングよりも受口の開口端側において、管径方向に圧縮されて受口の内周面と挿口の外周面との間をシールするシールリングが設けられ、
挿口の外周に挿口突部が形成され、
挿口突部が挿口の離脱方向において受口の奥側からロックリングに係合することにより、挿口が受口から離脱することを防止可能な管継手に備えられるリング体であって、
受口の内周面と挿口の外周面との間に挿入されて管継手内に設けられる本体部と、本体部が受口の開口端側へずれるのを防止するずれ止め部材とを有し、
本体部は、受口に対して挿口を管径方向へ移動させて、第1の管の管軸心と第2の管の管軸心との管径方向におけるずれを減少させることを特徴とするリング体。 - ずれ止め部材は、管軸方向における先端部が受口の内周面に当接可能であり、管軸方向における基端部が本体部の内周側に設けられていることを特徴とする請求項1に記載のリング体。
- 上記請求項1又は請求項2に記載のリング体を備えた管継手であって、リング体が受口の内周面と挿口の外周面との間に嵌め込まれていることを特徴とする管継手。
- リング体のずれ止め部材の先端部が受口の内周面に当接していることを特徴とする請求項3に記載の管継手。
- リング体よりも受口の開口端側において、受口の内周面と挿口の外周面との間にシールリング挿入空間が全周にわたり形成され、
シールリングはシールリング挿入空間に挿入され、
受口の内周面は、管軸方向におけるロックリング収容溝とシールリング挿入空間との間に、管径方向の内側へ突出した受口突部を有し、
リング体の本体部は受口突部の内周面と挿口の外周面との間に挿入されていることを特徴とする請求項3又は請求項4に記載の管継手。 - 受口の開口端部に、シールリングを受口の奥側へ押圧する押輪が設けられ、
押輪はシールリングを押圧する押圧方向において受口の開口端面に当接し、
リング体は管軸方向におけるロックリングとシールリングとの間に設けられ、
管軸方向におけるシールリングとリング体との間に隙間が形成されていることを特徴とする請求項3から請求項5のいずれか1項に記載の管継手。 - 上記請求項3から請求項6のいずれか1項に記載の管継手における管の接合方法であって、
第2の管の受口のロックリング収容溝にロックリングをセットし、
第1の管の挿口を受口に挿入して、挿口突部をロックリングにおいて受口の開口端側から受口の奥側へ通過させ、
ロックリングを縮径して挿口の外周に抱き付かせ、
予め第1の管に外嵌しておいたリング体を、管軸方向に移動して、受口の開口端部から受口の内周面と挿口の外周面との間に挿入し、
シールリングを受口の開口端部から受口の内周面と挿口の外周面との間に押し込むことを特徴とする管の接合方法。
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CA3153455A CA3153455A1 (en) | 2019-10-18 | 2020-10-05 | Ring body, pipe fitting, and method for joining pipes |
US17/769,099 US12013060B2 (en) | 2019-10-18 | 2020-10-05 | Ring body, pipe fitting, and method for joining pipes |
CN202080070428.7A CN114502864B (zh) | 2019-10-18 | 2020-10-05 | 管接头及管的接合方法 |
EP20876654.3A EP4043772B1 (en) | 2019-10-18 | 2020-10-05 | Pipe joint, method for joining pipes, and use of a ring body in a pipe joint |
SA522432278A SA522432278B1 (ar) | 2019-10-18 | 2022-04-17 | جسم حلقي، تركيب أنبوبي، وطريقة لربط الأنابيب |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07260059A (ja) * | 1994-03-22 | 1995-10-13 | Kubota Corp | 離脱防止管継手 |
JP2002340257A (ja) | 2001-05-15 | 2002-11-27 | Nippon Chutetsukan Kk | 管継手における挿口挿入用治具 |
JP2008089095A (ja) * | 2006-10-03 | 2008-04-17 | Kubota Corp | 管継手およびそれに用いられるバックアップリング |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6904397A (ja) | 1969-03-21 | 1969-08-25 | ||
GB1520332A (en) * | 1975-05-16 | 1978-08-09 | Kubota Ltd | Separationprevented pipe joint construction |
JPH09317961A (ja) * | 1996-05-24 | 1997-12-12 | Yokohama Rubber Co Ltd:The | 管継手および管状体保持金具 |
JP3135228B2 (ja) | 1998-03-06 | 2001-02-13 | 株式会社ベンカン | 管継手 |
CN100373085C (zh) | 2001-10-04 | 2008-03-05 | 东京瓦斯株式会社 | 插入式管接头 |
KR101488752B1 (ko) * | 2009-01-27 | 2015-02-03 | 가부시끼 가이샤 구보다 | 파이프 조인트 및 관의 접속 장치 |
EP2848850B1 (en) * | 2012-06-25 | 2017-05-10 | Kubota Corporation | Joint and use of a sealing member |
JP6242626B2 (ja) | 2013-08-09 | 2017-12-06 | コスモ工機株式会社 | 管継手 |
JP6525636B2 (ja) * | 2015-02-26 | 2019-06-05 | 株式会社クボタ | バックアップリング、継手および管の接続方法 |
US11384875B2 (en) | 2016-03-28 | 2022-07-12 | Kubota Corporation | Pipe joint, separation prevention member, and method of connecting pipes |
CN205716124U (zh) | 2016-05-03 | 2016-11-23 | 苏州捷英特管道技术有限公司 | 一种金属管与非金属管的连接装置 |
WO2018001575A1 (en) | 2016-06-30 | 2018-01-04 | Total Sa | System to connect a first pipe and a second pipe |
-
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07260059A (ja) * | 1994-03-22 | 1995-10-13 | Kubota Corp | 離脱防止管継手 |
JP2002340257A (ja) | 2001-05-15 | 2002-11-27 | Nippon Chutetsukan Kk | 管継手における挿口挿入用治具 |
JP2008089095A (ja) * | 2006-10-03 | 2008-04-17 | Kubota Corp | 管継手およびそれに用いられるバックアップリング |
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CA3153455A1 (en) | 2021-04-22 |
US20240019055A1 (en) | 2024-01-18 |
JP2021067282A (ja) | 2021-04-30 |
EP4043772A1 (en) | 2022-08-17 |
EP4043772A4 (en) | 2022-11-16 |
JP7382203B2 (ja) | 2023-11-16 |
SA522432278B1 (ar) | 2023-02-08 |
CN114502864A (zh) | 2022-05-13 |
TW202129186A (zh) | 2021-08-01 |
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