CN217927654U - Pipeline connecting assembly - Google Patents

Abstract

The utility model discloses a pipeline coupling assembling relates to fluid medium transmission apparatus technical field. This conduit coupling assembly includes: the first joint, the second joint, first elastic component, casing, piston and a plurality of locking pieces. The first end of the second joint is used for being connected with the first end of the first joint in a stop mode. A plurality of locking pieces are the annular and distribute in the first end that the second connects and form and hold the chamber, and the at least part of first joint is located and holds the chamber, and a plurality of locking pieces all link to each other with the second joint activity, and the radial deflection of the equal relative second joint edge first joint of a plurality of locking pieces is in order to realize locking piece and first joint lock joint and separation. The first elastic piece is respectively connected with the locking piece and the second connector, and the first elastic piece can drive the locking pieces to be separated from the first connector. The shell is sleeved on the plurality of locking blocks and connected with the second connector. The piston is movably arranged in the shell so as to drive the locking blocks to be buckled with or separated from the first connector through the piston.

Description

Pipeline connecting assembly

Technical Field

The utility model relates to a fluid medium transmission apparatus technical field especially relates to pipeline coupling assembling.

Background

At present, the production operation of the coiled tubing of the oil well and the gas well is mainly performed by a horizontal well, but the problem that the operation platform is high is not ignored, and well control devices are mostly connected in a union and flange mode; in actual operation, the connection in the form of a union or a flange is tightened and dismantled a large number of times; and the multi-well zipper type alternate operation is adopted on the coiled tubing operation field, so that operators are required to frequently go up and down well platforms for tightening and dismounting; after pumping perforation is completed, the well mouth is closed, after the internal pressure of the blowout preventer is released to zero and the liquid in the blowout preventer is emptied, an operator replaces a perforating gun string and a downhole tool at the disassembly and connection part of the upper platform, and a crane hoists the blowout preventer to move to a nearby well mouth; the platform is mounted again to complete the tightening work; the whole process requires continuous repeated tightening and dismantling by the operator.

In the process of realizing the connection of the well control device, at least the following problems exist: the disassembly of the operating personnel is inconvenient and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a pipeline connecting assembly to in solving among the prior art hydraulic pressure pipeline connection process, the inconvenient and inefficiency problem of pipeline dismantlement.

In order to solve the above problem, the utility model adopts the following technical scheme:

pipeline coupling assembling, include:

a first joint having a first channel;

the first end of the second joint is used for being connected with the first end of the first joint in a stop manner, the second joint is provided with a second channel, and the second channel is communicated with the first channel under the condition that the second joint is connected with the first joint in the stop manner;

the locking blocks are annularly distributed at the first end of the second connector and form an accommodating cavity, at least part of the first connector is positioned in the accommodating cavity, the locking blocks are movably connected with the second connector, and the second connector which can be opposite to the locking blocks can deflect between a first position and a second position along the radial direction of the first connector; under the condition that the locking block is positioned at the first position, the locking block is buckled with the first connector; under the condition that the locking block is positioned at the second position, the locking block is separated from the first joint;

the first elastic piece is respectively connected with the locking blocks and the second joint and can drive the locking blocks to move from the first position to the second position;

the shell is sleeved on the plurality of locking blocks and connected with the second connector;

the piston is movably arranged in the shell and used for driving the plurality of locking blocks to move from the second position to the first position.

In some optional embodiments, the locking block has a first abutting surface, the second joint has a second abutting surface, when the locking block is fastened to the first joint, one side of the first abutting surface close to the accommodating cavity abuts against one side of the second abutting surface close to the second channel, and an avoiding gap is formed between one side of the first abutting surface far from the accommodating cavity and one side of the second abutting surface far from the second channel.

In some optional embodiments, the pipeline connecting assembly further comprises a first connecting piece, one end of the locking block, which is close to the second joint, is provided with a first mounting hole, the first connecting piece penetrates through the first mounting hole to be connected with the second joint, and one end of the first connecting piece, which is far away from the second joint, is provided with a first limiting part; the first elastic piece is sleeved on the first connecting piece, and two ends of the first elastic piece respectively abut against the first limiting part and the locking block.

In some optional embodiments, the outer side wall of the first end of the first joint is provided with a first limiting groove, one end of the locking block, which is away from the second joint, is provided with a first protrusion, and the locking block is located in the first limiting groove through at least part of the first protrusion and is fastened with the first joint.

In some optional embodiments, the pipe connecting assembly further includes a second elastic member, a first end of the second elastic member abuts against the second joint, a second end of the second elastic member abuts against the piston, and the second elastic member can drive the piston to move toward the direction in which the locking block is away from the second joint until the piston drives the locking block to move to the first position.

In some alternative embodiments, the end of the piston away from the second joint is provided with a pressing part, and the pressing part protrudes out of the inner side wall of the piston; one end of the locking block, which is far away from the second joint, is provided with a second bulge, and the second bulge is protruded on one side of the locking block, which is far away from the outer side wall of the first joint; under the condition that the extrusion part moves to the second bulge along the locking block, the extrusion part is stopped against one side of the second bulge, which is far away from the outer side wall of the first connector, and the locking block is buckled with the first connector.

In some alternative embodiments, the housing has a first fluid injection port and a second fluid injection port, the first fluid injection port and the second fluid injection port being located on opposite sides of the piston; the piston is used for receiving the fluid entering from the first fluid injection port until the extrusion part moves to the second bulge; the piston is also used for receiving the fluid entering from the second fluid injection port until the pressing part is separated from the second bulge.

In some optional embodiments, the housing has a second position-limiting portion, and when the piston drives the lock block to move to the first position, one end of the piston away from the second joint abuts against the second position-limiting portion.

In some alternative embodiments, the pipe coupling assembly further comprises a shear pin and a third resilient member, the second fitting having a second mounting hole extending through a channel wall of the second fitting and communicating with the second channel; the safety pin is movably arranged in the second mounting hole, and the third elastic piece is arranged between the second joint and the safety pin; under the condition that the pressure in the second channel is greater than or equal to the preset pressure, the safety pin protrudes out of the outer side wall of the second joint and is stopped against one end, close to the second joint, of the piston; and under the condition that the pressure in the second channel is less than the preset pressure, the third elastic element drives the safety pin to move until the safety pin is sunken in the outer side wall of the second joint.

In some optional embodiments, the pipe connecting assembly further includes a fixing member, the fixing member is sleeved on the safety pin, and the fixing member is connected to the second joint, the safety pin has a third limiting portion, the third limiting portion is located on one side of the fixing member close to the second channel, the third elastic member is located between the fixing member and the third limiting portion, and two ends of the third elastic member respectively abut against the third limiting portion and the fixing member.

The utility model discloses a technical scheme can reach following beneficial effect:

the embodiment of the utility model provides a pipeline coupling assembling disclosed can be used for the connection between the pipeline. Illustratively, the two pipes connected by the pipe connection are a first pipe and a second pipe, respectively. Specifically, under the condition that the pipeline connecting assembly is required to connect two pipelines, the first joint is connected with the first pipeline, so that the first channel is communicated with the first pipeline, and the second joint is connected with the second pipeline, so that the second pipeline is communicated with the second channel. Furthermore, the first connector is inserted into the accommodating cavity, then the piston is operated to move along the locking block, and then the locking block is driven to move from the second position to the first position, so that the locking block is buckled with the first connector, and the locking block can lock and fix the first connector, so that the first connector is stably connected with the second connector. Under the condition that the pipeline connecting assembly between the first pipeline and the second pipeline needs to be disconnected, the operating piston moves along the locking block, so that the locking block can move from the first position to the second position under the driving of the first elastic piece, the locking block is separated from the first joint, the first joint can be taken out of the accommodating cavity, and the connection between the first joint and the second joint is disconnected. In the embodiment, the first joint and the second joint can be connected or disconnected in a locking way only by operating the piston to move relative to the locking block. Therefore, the scheme is beneficial to reducing the difficulty of connecting and disassembling the pipeline, improving the convenience of connecting or disassembling the pipeline and further being beneficial to improving the efficiency of connecting and disassembling the pipeline.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 is a schematic view of a lock block in a first position relative to a second joint according to some alternative embodiments of the present invention;

FIG. 2 is a schematic view of a lock block in a second position relative to a second connector according to some alternative embodiments of the present invention;

fig. 3 is a schematic view of a pipe coupling assembly with an indicator stem in some alternative embodiments of the present invention;

fig. 4 is a partial schematic view of a fastening portion of a locking piece and a first joint according to some alternative embodiments of the present invention;

FIG. 5 is a partial schematic view of a shear pin according to some alternative embodiments of the invention;

fig. 6 is a partial schematic view of an indicator stem in some alternative embodiments of the invention;

FIG. 7 is a partial schematic view of the connection between the locking piece and the second joint according to some alternative embodiments of the present invention

Fig. 8 is a schematic view of a locking block in some alternative embodiments of the present invention;

fig. 9 is a schematic diagram of a pipe coupling according to some alternative embodiments of the present invention.

Description of reference numerals:

101-avoiding the gap; 102-a first fluid chamber; 103-a second fluid chamber;

100-a first joint; 110 — a first channel; 120-a first limiting groove; 130-a through hole;

200-a second linker; 210-a second channel; 220-a second stop surface; 230-a second mounting hole;

300-locking block; 310-a containment chamber; 320-a first stop surface; 330-a first bump; 331-a third resisting surface; 332-a fourth stopping surface; 340-a second protrusion; 341-third guide surface; 350-a main body portion; 360-a connecting portion; 370-a first mounting hole;

400-a first resilient member;

500-a housing; 510-a first fluid injection port; 520-a second fluid injection port; 530-a second limiting part;

600-a piston; 610-a pressing part; 611 — a first guide surface; 620-a first seal; 630-a second seal;

700-a first connector; 710-a first stop;

800-a second elastic member;

900-safety pin; 910-a third limiting portion;

1000-a third elastic member;

1100-a fixture;

1200-an end cap;

1300-a guide; 1310-a third guide surface;

1400-indicating rod.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following description will be given with reference to the embodiments of the present invention and the accompanying drawings, in which the technical solution of the present invention is clearly and completely described. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to fig. 1 to 9.

Referring to fig. 1-3, in some alternative embodiments, a conduit connection assembly includes: the first joint 100, the second joint 200, the first elastic member 400, the housing 500, the piston 600, and the plurality of locking pieces 300.

Illustratively, the first connector 100 has a first passageway 110. The second connector 200 has a second channel 210. The first end of the second connector 200 is adapted to be in abutting connection with the first end of the first connector 100. The second passage 210 communicates with the first passage 110 with the second joint 200 being in abutting contact with the first joint 100.

Illustratively, the first channel 110 and the second channel 210 are both used to convey a fluidic medium. Alternatively, the fluid medium may be a liquid, such as petroleum. But may also be a gas such as natural gas. For this reason, the present embodiment does not limit the specific kind of the fluid medium conveyed by the first and second passages 110 and 210.

Further optionally, a plurality of locking pieces 300 are annularly distributed at the first end of the second connector 200 and form a receiving cavity 310. At least part of the first connector 100 is located in the accommodating cavity 310, the plurality of locking blocks 300 are movably connected with the second connector 200, and the plurality of locking blocks 300 can deflect between a first position and a second position relative to the second connector 200 along the radial direction of the first connector 100; when the locking piece 300 is located at the first position, the locking piece 300 is fastened to the first connector 100. With the lock block 300 in the second position, the lock block 300 is separated from the first connector 100. Illustratively, the lock block 300 has a first end proximate the second connector 200 and a second end distal the second connector 200. In the above embodiment, the first end of the locking block 300 is connected to the second joint 200, and the locking block 300 deflects only along the radial direction of the first joint 100 relative to the second joint 200, thereby being beneficial to ensuring that the locking blocks 300 are uniformly distributed around the first joint 100, being beneficial to improving the uniformity of the stress in the directions of the first joint 100 and the second joint 200, avoiding the first joint 100 and/or the second joint 200 from being bent or broken due to uneven stress, further improving the connection stability between the first joint 100 and the second joint 200, and ensuring the assembly accuracy of the first joint 100 and the second joint 200.

Alternatively, the first elastic member 400 is connected to the locking blocks 300 and the second connector 200, respectively, and the first elastic member 400 can drive the plurality of locking blocks 300 to move from the first position to the second position, i.e. the first elastic member 400 can drive the locking blocks 300 to separate from the first connector 100, so that the first connector 100 can be inserted into or pulled out of the accommodating cavity 310. Further optionally, the number of the first elastic members 400 is plural. Optionally, the number of the first elastic members 400 is equal to the number of the locking blocks 300, and the first elastic members 400 correspond to the locking blocks 300 one to one. This embodiment can utilize first elastic member 400 to realize that locking piece 300 separates with first joint 100, and then is favorable to reducing the difficult degree of operation of pipe connection spare, promotes the efficiency that pipe connection spare was dismantled or assembled. The first elastic member 400 may be, but is not limited to, a spring.

Further optionally, the housing 500 is sleeved on the plurality of locking blocks 300, and the housing 500 is connected to the second connector 200. The piston 600 is movably disposed in the housing 500, and the piston 600 is used for driving the plurality of locking blocks 300 to move from the second position to the first position. Optionally, the piston 600 is sleeved on the plurality of locking blocks 300.

In the above embodiment, the housing 500 may provide an installation base and/or an installation space for the piston 600. In addition, the housing 500 is also beneficial to prevent external dust or debris from adhering to the lock block 300, the first connector 100 and/or the second connector 200, thereby being beneficial to improving the stability of the assembly of the lock block 300 with the second connector 200 and/or the first connector 100. In addition, the piston 600 is sleeved on the plurality of locking pieces 300, so that the piston 600 can synchronously drive the plurality of locking pieces 300 to be fastened with the first connector 100.

At present, the production operation of the coiled tubing of an oil well and a gas well is mainly horizontal wells. The well control device is mostly connected by union or flange. In actual operation, the operator is required to continuously and repeatedly tighten and disassemble the screw. Not only the labor intensity of the personnel is large, but also the repetition frequency is high. And high pressure exists at the well head. There is a greater risk to the operator who climbs repeatedly. In addition, the disassembly difficulty of union connection and flange connection is high, and the efficiency is low.

Alternatively, the pipe connection described in the above embodiments may be used in a well control device for an oil or gas well. Illustratively, the end of the first sub 100 distal from the second sub 200 is connected to a well control device. Illustratively, the first sub 100 may be threadably, flanged, and/or threadably connected to the well control device. Alternatively, the well control device may be a hydraulic pump, a blowout preventer, a pneumatic pump, or the like.

In the above embodiment, the operator only needs to operate the piston 600 to move relative to the locking block 300, so as to connect and disconnect the first connector 100 and the second connector 200. It should be noted that, during the operation of the piston 600, the operator fastens the first coupling 100 and the second coupling 200 through the locking piece 300, so as to avoid the piston 600 from being subjected to a large axial resistance. For example, the pipe connecting assembly may be hydraulically, but not limited to, hydraulically driving the piston 600 to move relative to the piston 600, and then driving the locking block 300 to deflect along the radial direction of the first joint 100 toward the direction close to the outer side wall of the first joint 100 by using the piston 600.

Specifically, during the process of connecting the first connector 100 and the second connector 200, the piston 600 may be supported on a side of the locking block 300 away from the outer side wall of the first connector 100 through the inner side wall of the piston 600, so that the locking block 300 is deflected toward a direction close to the outer side wall of the first connector 100 relative to the second connector 200, so as to realize the fastening of the locking block 300 and the first connector 100. During the process of disconnecting the first connector 100 and the second connector 200, the piston 600 is operated, so that the piston 600 can move along the locking piece 300 in a direction approaching the second connector 200, and further the locking piece 300 can move in a direction away from the outer side wall of the first connector 100 under the action of the first elastic member 400, and further the locking piece 300 is separated from the first connector 100.

In the above embodiment, the piston 600 is sleeved on the plurality of locking pieces 300, which is beneficial to realize that the plurality of locking pieces 300 synchronously deflect in the direction away from the outer side wall of the first joint 100 relative to the second joint 200, so as to be beneficial to reducing the difficulty in dismounting the pipe connection assembly and improve the fastening precision between the locking pieces 300 and the first joint 100.

In some alternative embodiments, as shown in fig. 4, 7 and 8, the locking block 300 has a first stop surface 320 and the second connector 200 has a second stop surface 220. When the locking block 300 is fastened to the first connector 100, one side of the first abutting surface 320 close to the accommodating cavity 310 abuts against one side of the second abutting surface 220 close to the second channel 210, and an avoiding gap 101 is formed between one side of the first abutting surface 320 far from the accommodating cavity 310 and one side of the second abutting surface 220 far from the second channel 210. For example, a wedge-shaped gap may be formed between the first abutting surface 320 and the second abutting surface 220.

For example, in the process of disconnecting the first connector 100 from the second connector 200, a side of the first abutting surface 320 away from the accommodating cavity 310 may be close to a side of the second abutting surface 220 away from the second channel 210, thereby facilitating the movement of the locking block 300 relative to the second connector 200 along the radial direction of the first connector 100 in the direction away from the outer sidewall of the first connector 100. Specifically, in the process of disconnecting the first connector 100 from the second connector 200, the locking block 300 uses a side of the first abutting surface 320 close to the accommodating cavity 310 as a supporting point relative to the second connector 200, and deflects around the supporting point in a direction away from the outer side wall of the first connector 100 under the action of the first elastic element 400. Thereby separating the end of the locking piece 300 away from the second connector 200 from the first connector 100.

In the pipe connection according to the above embodiment, when the first joint 100 and the second joint 200 are in a connected state, only one side of the end surface of the locking block 300 close to the second joint 200, which is close to the second channel 210, abuts against the second joint 200, which is beneficial for the locking block 300 to generate a torque that deflects in a direction away from the outer sidewall of the first joint 100 under the action of the first elastic member 400, and is beneficial for the locking block 300 to move relative to the second joint 200 in a direction away from the outer sidewall of the first joint 100 along the radial direction of the first joint 100.

For example, at least one of the first abutting surface 320 and the second abutting surface 220 may be provided as an inclined surface. Illustratively, in a case where the pipe connecting assembly handles the connected state, the first abutting surface 320 is inclined to a side away from the second joint 200 with respect to a radial direction of the second passage 210; and/or the second stopping surface 220 is inclined with respect to a side of the second channel 210 facing radially away from the locking block 300.

Referring to fig. 4 and 7, in some alternative embodiments, the pipe connecting assembly further includes a first connecting member 700, a first mounting hole 370 is formed at an end of the locking block 300 close to the second joint 200, the first connecting member 700 passes through the first mounting hole 370 to connect with the second joint 200, and a first limiting portion 710 is formed at an end of the first connecting member 700 away from the second joint 200. The first elastic element 400 is sleeved on the first connecting element 700, and two ends of the first elastic element 400 respectively abut against the first limiting portion 710 and the locking block 300.

In the above embodiment, the locking block 300 may be connected to the second connector 200 through the first connector 700, which is beneficial to preventing the locking block 300 from deviating along the peripheral direction of the first connector 100, and is beneficial to ensuring the locking block 300 to be uniformly distributed along the peripheral direction of the first connector 100, thereby being beneficial to improving the uniformity of the stress at each of the first connector 100 and the second connector 200. In addition, it is possible to prevent the lock blocks 300 from being displaced in the circumferential direction of the first joint 100 so that the friction force between two adjacent lock blocks 300 is increased.

It should be noted that, in order to ensure that the locking piece 300 can smoothly deflect relative to the first connector 100, a plurality of locking pieces 300 may form a ring shape with a clearance fit. The above embodiment is beneficial to ensure that the gap between two adjacent locking blocks 300 is constant, and is beneficial to prevent the friction between the locking blocks 300 from hindering the locking blocks 300 from deflecting relative to the second joint 200, thereby being beneficial to ensure the structural stability of the pipe connecting assembly.

Referring to fig. 7 and 8, in an alternative embodiment, the locking block 300 includes a main body portion 350 and a connecting portion 360. Illustratively, the connecting portion 360 is disposed at an end of the main body portion 350 close to the second connector 200, and the connecting portion 360 extends relative to the main body portion 350 in a direction of the main body portion 350 away from the outer sidewall of the first connector 100. Optionally, a first mounting hole 370 opens at the connection portion 360. Further optionally, two sides of the inner sidewall of the first mounting hole 370 close to or far from the first connector 100 are in clearance fit with the first connector 700, thereby facilitating the deflection of the lock block 300 relative to the second connector 200. Further alternatively, the first mounting hole 370 may be provided as an oblong hole or an elliptical hole in a radial direction of the first joint 100. For example, both sides of the inner sidewall of the first mounting hole 370 in the circumferential direction of the first connector 100 may be slidably engaged with the first connector 700, respectively, thereby contributing to an improvement in the assembly accuracy between the locking piece 300 and the second connector 200. In addition, this embodiment is also beneficial to avoid the adjacent two locking pieces 300 from approaching or moving away from each other, so as to ensure that the locking pieces 300 are uniformly distributed along the peripheral direction of the first connector 100.

In some alternative embodiments, an included angle between the connecting portion 360 and the main body portion 350 is an acute angle, which is beneficial to forming the avoidance gap 101 between the first abutting surface 320 and the second abutting surface 220.

Referring to fig. 1 and 2, in some alternative embodiments, the first end of the first joint 100 has a first limiting groove 120 formed on an outer side wall thereof. The end of the locking piece 300 away from the second connector 200 has a first protrusion 330, and the locking piece 300 is located in the first limiting groove 120 through at least a portion of the first protrusion 330 and is fastened to the first connector 100. Illustratively, the first protrusion 330 extends in a direction proximate to an outer sidewall of the first joint 100.

In the process of moving the piston 600 along the locking piece 300, the inner sidewall of the piston 600 is supported on the side of the locking piece 300 away from the outer side of the first connector 100, so that the locking piece 300 is subjected to an acting force in the direction close to the outer sidewall of the first connector 100, and the first protrusion 330 in the locking piece 300 can be embedded into the first limiting groove 120, so as to realize the fastening of the locking piece 300 and the first connector 100.

Referring to fig. 1, 7 and 8, in some alternative embodiments, a side of the first protrusion 330 away from the second connector 200 has a third stopping surface 331. When the pipe connecting assembly is in the connecting state, the third abutting surface 331 abuts against the inner sidewall of the first limiting groove 120. Further, the third abutting surface 331 is an inclined surface, and an inner sidewall of the first limiting groove 120 on a side away from the second joint 200 is parallel to the third abutting surface 331. In this embodiment, the third stopping surface 331 is beneficial to prevent the acting force between the locking block 300 and the first joint 100 from increasing the internal stress between the first joint 100 and the second joint 200, and is further beneficial to prevent the pipe connecting assembly from being damaged due to local stress concentration.

In some alternative embodiments, a side of the first protrusion 330 near the second connector 200 has a fourth stopping surface 332. When the pipe connecting assembly is in the connecting state, the fourth abutting surface 332 abuts against the inner side wall of the first limiting groove 120 to provide an axial acting force for connecting the first joint 100 and the second joint 200. Further, the fourth abutting surface 332 is an inclined surface, and an inner side wall of the first limiting groove 120 close to one side of the second joint 200 is parallel to the fourth abutting surface 332.

In the above embodiment, the fourth abutting surface 332 is an inclined surface, which is not only beneficial to the first protrusion 330 to be embedded into the first limiting groove 120, but also beneficial to reducing the pressure applied to the contact portion between the locking block 300 and the first joint 100 in the process of connecting or disconnecting the first joint 100 and the second joint 200, thereby being beneficial to reducing the abrasion between the locking block 300 and the first joint 100.

In some optional embodiments, the pipe connecting assembly further includes a second elastic member 800, a first end of the second elastic member 800 abuts against the second joint 200, a second end of the second elastic member 800 abuts against the piston 600, and the second elastic member 800 can drive the piston 600 to move toward the locking block 300 away from the second joint 200 until the piston 600 drives the locking block 300 to move to the first position.

In the above embodiment, the second elastic member 800 is useful for ensuring the stability of the pipe connecting assembly in the connected state. Also, in case the piston 600 is moved relative to the lock block 300 by hydraulic driving, this embodiment may still ensure stability of the pipe connection assembly connection in case of a hydraulic system failure. Exemplarily, the second elastic member 800 may be a spring.

In some alternative embodiments, piston 600 is driven by hydraulic oil. In the above embodiment, the second elastic element 800 can still maintain the lock block 300 of the pipe connection assembly fastened to the first connector 100 when the hydraulic oil is under pressure relief. Thus, during production work, servicing of the hydraulic system driving the movement of the piston 600 can be performed with the pipe connection assembly connecting the two medium conveying pipes.

In some alternative embodiments, as shown in fig. 1 to 4, an end of the locking block 300 away from the second connector 200 has a second protrusion 340, and the second protrusion 340 protrudes from a side of the locking block 300 away from an outer side wall of the first connector 100. Therefore, in the annular structure formed by enclosing the plurality of locking blocks 300, the outer diameter of the end far away from the second joint 200 is larger, so that in the process that the piston 600 moves towards the direction far away from the second joint 200, the inner side wall of the piston 600 can press the side, away from the outer side wall of the first joint 100, of the second protrusion 340, and further the locking blocks 300 deflect towards the direction close to the outer side wall of the first joint 100.

In a further alternative embodiment, the end of the piston 600 remote from the second connector 200 has a pressing portion 610, and the pressing portion 610 protrudes from the inner side wall of the piston 600. Under the condition that the pressing portion 610 moves to the second protrusion 340 along the locking piece 300, the pressing portion 610 abuts against one side of the second protrusion 340 away from the outer sidewall of the first connector 100, and at least a portion of the first protrusion 330 abuts against the first limiting groove 120. This embodiment is beneficial for extending the deflection stroke of the lock block 300 relative to the second connector 200.

In a further alternative embodiment, as shown in fig. 4, the side of the pressing portion 610 remote from the second joint 200 has a first guide surface 611. Illustratively, the first guide surface 611 is disposed obliquely so that the pressing portion 610 slides to a side of the second protrusion 340 facing away from the outer sidewall of the first joint 100. Optionally, the first guide surface 611 is a conical surface. Further optionally, a side of the second protrusion 340 close to the second joint 200 has a second guiding surface, and the second guiding surface is parallel to the first guiding surface 611.

Referring to fig. 1 and 2, in some alternative embodiments, the housing 500 has a first fluid injection port 510 and a second fluid injection port 520, the first fluid injection port 510 and the second fluid injection port 520 being located on opposite sides of the piston 600. The piston 600 is used for receiving the fluid entering from the first fluid injection port 510, and the pressing part 610 moves to the second protrusion 340; the piston 600 is also used to receive fluid entering from the second fluid injection port 520 until the pressing portion 610 is separated from the second protrusion 340.

For example, hydraulic oil may be injected through the first and second fluid injection ports 510 and 520. For example, in a case where it is necessary to connect the first joint 100 and the second joint 200, the piston 600 may be moved in a direction away from the second joint 200 along the locking piece 300 by injecting hydraulic oil into the first fluid injection port 510. In the case that the pressing portion 610 in the piston 600 moves to the second protrusion 340, the pressing portion 610 is supported on a side of the second protrusion 340 facing away from the outer sidewall of the first joint 100, thereby deflecting the locking block 300 to a direction approaching the outer sidewall of the first joint 100. In the case where the first joint 100 and the second joint 200 need to be disconnected, hydraulic oil may be injected into the second fluid injection port 520, so that the piston 600 is driven by the hydraulic oil to move along the locking piece 300 in a direction approaching the second joint 200. With the pressing portion 610 in the piston 600 separated from the second protrusion 340, the first elastic member 400 drives the locking piece 300 to deflect in a direction away from the outer sidewall of the first joint 100.

In an alternative embodiment, as shown in fig. 1 and 2, the piston 600 has a piston body, a first seal 620 and a second seal 630. Optionally, the first sealing portion 620 and the second sealing portion 630 are spaced apart from each other on the outer side wall of the piston body.

In some alternative embodiments, the first sealing portion 620, the piston body, and the housing 500 form the first fluid chamber 102 on a side of the first sealing portion 620 proximate the second connector 200. Optionally, the first fluid chamber 102 is in communication with the first fluid injection port 510 such that fluid injected by the first fluid injection port 510 can enter the first fluid chamber 102. Referring to fig. 1 and 2, as the pressure of the fluid in the first fluid chamber 102 increases, the fluid in the first fluid chamber 102 may push the piston 600 to move along the lock block 300 in a direction away from the second connector 200.

Optionally, the first sealing portion 620 and the second sealing portion 630 protrude from an outer side wall of the piston body, and the piston body, the first sealing portion 620 and the second sealing portion 630 are respectively in close fit with an inner side wall of the housing 500, so that the first sealing portion 620, the second sealing portion 630 and the housing 500 can enclose the second fluid chamber 103. Optionally, the second fluid chamber 103 is in communication with the second fluid injection port 520 such that fluid injected through the second fluid injection port 520 may enter the second fluid chamber 103. Referring to fig. 1 and 2, as the pressure of the fluid in the second fluid chamber 103 increases, the fluid in the second fluid chamber 103 may push the piston 600 to move along the lock block 300 in a direction to approach the second connector 200.

In an alternative embodiment, as shown in fig. 1 and 2, the housing 500 has a second stopper 530. For example, when the piston 600 drives the locking block 300 to move to the first position, one end of the piston 600 far from the second joint 200 abuts against the second limiting portion 530. Optionally, in a case that the pressing portion 610 in the piston 600 moves to the second protrusion 340, that is, the pressing portion 610 is supported on a side of the second protrusion 340 away from the outer sidewall of the first joint 100, the piston 600 is stopped against the second limiting portion 530, so as to avoid an excessive moving distance of the piston 600 relative to the lock block 300, which is beneficial to improving the moving precision of the hydraulic control piston 600 relative to the lock block 300.

Referring to fig. 1 and 2, in some alternative embodiments, the conduit connection assembly further includes an end cap 1200. Illustratively, the end cap 1200 is threadedly coupled to the second connector 200 and the housing 500, respectively, to effect the threaded coupling of the housing 500 to the second connector 200 via the end cap 1200. This embodiment is beneficial to reduce the manufacturing difficulty of the second connector 200.

In some alternative embodiments, the pipe connecting assembly further includes a shear pin 900 and a third elastic member 1000, the second joint 200 has a second mounting hole 230, and the second mounting hole 230 penetrates through a channel wall of the second joint 200 and communicates with the second channel 210. The safety pin 900 is movably disposed in the second mounting hole 230, and the third elastic member 1000 is disposed between the second connector 200 and the safety pin 900. When the pressure in the second channel 210 is greater than or equal to the predetermined pressure, the safety pin 900 protrudes out of the outer sidewall of the second connector 200, and the safety pin 900 stops against one end of the piston 600 close to the second connector 200. In case the pressure in the second channel 210 is less than the preset pressure, the third elastic member 1000 drives the safety pin 900 to move until the safety pin 900 is recessed in the outer sidewall of the second joint 200.

It should be noted that, in the case that the pipe connection assembly is used to connect two pipes for conveying high-pressure media, the fluid pressure in the first channel 110 and the second channel 210 can be used to push the safety pin 900 to protrude from the outer side wall of the second joint 200, so that the safety pin 900 can be stopped at one end of the piston 600 close to the second joint 200, so as to prevent the piston 600 from moving towards the direction close to the second joint 200. The embodiment is beneficial to preventing an operator from breaking the pipeline connecting piece under the condition of high pressure in the pipeline and improving the safety performance of the pipeline connecting piece.

It should be noted that, according to the pressure of the transmission medium in the first channel 110 and the second channel 210, the type of the corresponding third elastic member 1000 may be selected, so that the safety pin 900 may protrude out of the outer side wall of the second joint 200 under the action of the transmission medium in the first channel 110 and the second channel 210 and stop against one end of the piston 600 close to the second joint 200, so as to achieve self-locking of the pipe connection assembly.

Illustratively, the predetermined pressure is less than or equal to the maximum pressure of the transmission medium in the second channel 210 in the case where the first and second connectors 100 and 200 are safely disconnected. The preset pressure may be set according to actual needs, and for this reason, the specific size of the preset pressure is not limited in this embodiment.

In the above embodiment, by providing the safety pin 900, the first joint 100 and the second joint 200 in the pipe connection assembly can be disassembled only when the pressure of the transmission medium in the pipe is less than or equal to the pressure value capable of being safely disassembled, so that the first joint 100 and the second joint 200 can be prevented from being disconnected due to misoperation, and the safety of operators can be guaranteed.

Referring to fig. 5, in some optional embodiments, the pipe connecting assembly further includes a fixing member 1100, the fixing member 1100 is sleeved on the safety pin 900, the fixing member 1100 is connected to the second joint 200, the safety pin 900 has a third limiting portion 910, the third limiting portion 910 is located at a side of the fixing member 1100 close to the second channel 210, the third elastic member 1000 is located between the fixing member 1100 and the third limiting portion 910, and two ends of the third elastic member 1000 respectively abut against the third limiting portion 910 and the fixing member 1100. This embodiment is beneficial to improve the compactness of the components in the pipe coupling assembly and to protect the third resilient member 1000.

Optionally, the second mounting hole 230 has a fourth position-limiting portion therein. Illustratively, the second mounting hole 230 has a first hole section and a second hole section, the first hole section is a section far away from the second channel 210, and the diameter of the first hole section is larger than that of the second hole section, so that a fourth position-limiting part is formed at the communication position of the first hole section and the second hole section. Illustratively, one side of the third position-limiting portion 910 close to the second channel 210 stops against the fourth position-limiting portion.

In an alternative embodiment, as shown in fig. 1-3, the conduit connection assembly further comprises a guide 1300. Optionally, the guide 1300 is disposed at an end of the housing 500 away from the second connector 200. Further alternatively, the guide 1300 has a guide hole communicating with the receiving cavity 310 formed by the locking piece 300. During the connection of the first connector 100 with the second connector 200, the first connector 100 is inserted into the receiving cavity 310 along the guide hole. Further, the guide 1300 has a third guide surface 1310. Illustratively, the third guide surface 1310 is a conical surface. This embodiment is beneficial to reduce the difficulty of aligning the first connector 100 with the receiving cavity 310, and thus, the difficulty of connecting the pipe connecting assembly.

Referring to fig. 6, in some alternative embodiments, the conduit connection assembly further includes an indicator rod 1400, and illustratively, a first end of the indicator rod 1400 is connected to the piston 600, and a second end of the indicator rod 1400 passes through the housing 500 to the outside of the housing 500, so that the position of the piston 600 relative to the lock block 300 can be determined by observing the length of the indicator rod 1400 extending out of the housing 500.

The utility model discloses what the key description in the above embodiment is different between each embodiment, and different optimization characteristics are as long as not contradictory between each embodiment, all can make up and form more preferred embodiment, consider that the literary composition is succinct, then no longer describe here.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. A plumbing connection assembly, comprising:

a first fitting (100), the first fitting (100) having a first passageway (110);

a second connector (200), a first end of the second connector (200) is used for being in abutting connection with a first end of the first connector (100), the second connector (200) is provided with a second channel (210), and the second channel (210) is communicated with the first channel (110) under the condition that the second connector (200) is in abutting connection with the first connector (100);

a plurality of locking blocks (300), wherein the plurality of locking blocks (300) are annularly distributed at the first end of the second joint (200) and form a containing cavity (310), at least part of the first joint (100) is located in the containing cavity (310), the plurality of locking blocks (300) are movably connected with the second joint (200), and the plurality of locking blocks (300) can deflect between a first position and a second position relative to the second joint (200) along the radial direction of the first joint (100); when the locking piece (300) is located at the first position, the locking piece (300) is buckled with the first connector (100); -in the case of said locking piece (300) being in said second position, said locking piece (300) is detached from said first joint (100);

a first elastic member (400), wherein the first elastic member (400) is respectively connected with the locking blocks (300) and the second joint (200), and the first elastic member (400) can drive the plurality of locking blocks (300) to move from the first position to the second position;

the shell (500) is sleeved on the plurality of locking blocks (300), and the shell (500) is connected with the second connector (200);

a piston (600), the piston (600) being movably disposed within the housing (500), the piston (600) being configured to drive the plurality of locking blocks (300) from the second position to the first position.

2. The pipe connecting assembly according to claim 1, wherein the locking block (300) has a first abutting surface (320), the second joint (200) has a second abutting surface (220), when the locking block (300) is fastened to the first joint (100), a side of the first abutting surface (320) close to the accommodating cavity (310) abuts against a side of the second abutting surface (220) close to the second channel (210), and an escape gap (101) is formed between a side of the first abutting surface (320) far from the accommodating cavity (310) and a side of the second abutting surface (220) far from the second channel (210).

3. The pipe connecting assembly according to claim 1 or 2, further comprising a first connecting member (700), wherein a first mounting hole (370) is formed at one end of the locking block (300) close to the second joint (200), the first connecting member (700) passes through the first mounting hole (370) to be connected with the second joint (200), and a first limiting portion (710) is arranged at one end of the first connecting member (700) far away from the second joint (200);

the first elastic piece (400) is sleeved on the first connecting piece (700), and two ends of the first elastic piece (400) respectively abut against the first limiting part (710) and the locking block (300).

4. The pipe connecting assembly according to claim 1, wherein a first limiting groove (120) is formed in an outer side wall of the first end of the first joint (100), a first protrusion (330) is formed at an end of the locking piece (300) away from the second joint (200), and the locking piece (300) is fastened with the first joint (100) through at least a portion of the first protrusion (330) located in the first limiting groove (120).

5. The conduit connection assembly of claim 1, further comprising a second resilient member (800), wherein a first end of the second resilient member (800) abuts against the second joint (200), a second end of the second resilient member (800) abuts against the piston (600), and the second resilient member (800) can drive the piston (600) to move towards the direction that the lock block (300) is away from the second joint (200) until the piston (600) drives the lock block (300) to move to the first position.

6. A tubing connection assembly according to claim 5, wherein the end of the piston (600) remote from the second fitting (200) has a pressing portion (610), the pressing portion (610) protruding from an inner side wall of the piston (600); one end of the locking block (300) far away from the second connector (200) is provided with a second protrusion (340), and the second protrusion (340) protrudes out of one side of the locking block (300) far away from the outer side wall of the first connector (100);

under the condition that the pressing part (610) moves to the second protrusion (340) along the locking block (300), the pressing part (610) is stopped against one side, away from the outer side wall of the first connector (100), of the second protrusion (340), and the locking block (300) is buckled with the first connector (100).

7. The conduit connection assembly of claim 6, wherein the housing (500) has a first fluid injection port (510) and a second fluid injection port (520), the first fluid injection port (510) and the second fluid injection port (520) being located on opposite sides of the piston (600), respectively;

the piston (600) is used for receiving the fluid entering from the first fluid injection port (510) until the pressing part (610) moves to the second protrusion (340); the piston (600) is also used for receiving the fluid entering from the second fluid injection port (520) until the pressing part (610) is separated from the second bulge (340).

8. The conduit connection assembly of claim 1, wherein the housing (500) has a second stop portion (530), and wherein an end of the piston (600) distal from the second fitting (200) abuts against the second stop portion (530) when the piston (600) drives the lock block (300) to move to the first position.

9. The pipe connection assembly according to claim 1, further comprising a shear pin (900) and a third resilient member (1000), the second fitting (200) having a second mounting hole (230), the second mounting hole (230) penetrating through a channel wall of the second fitting (200) and communicating with the second channel (210); the safety pin (900) is movably disposed in the second mounting hole (230), and the third elastic member (1000) is disposed between the second joint (200) and the safety pin (900);

under the condition that the pressure in the second channel (210) is greater than or equal to a preset pressure, the safety pin (900) protrudes out of the outer side wall of the second joint (200), and the safety pin (900) is stopped against one end, close to the second joint (200), of the piston (600);

under the condition that the pressure in the second channel (210) is less than the preset pressure, the third elastic element (1000) drives the safety pin (900) to move until the safety pin (900) is sunken in the outer side wall of the second joint (200).

10. The conduit connection assembly of claim 9, further comprising a retainer (1100), wherein the retainer (1100) is sleeved on the shear pin (900), and wherein the retainer (1100) is connected to the second connector (200),

the safety pin (900) is provided with a third limiting part (910), the third limiting part (910) is positioned at one side of the fixing piece (1100) close to the second channel (210),

the third elastic member (1000) is located between the fixing member (1100) and the third limiting portion (910), and two ends of the third elastic member (1000) respectively abut against the third limiting portion (910) and the fixing member (1100).

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