Gas pipeline installation docking device

Abstract

The present application relates to gas pipeline installation technical field, disclose a butt joint device for gas pipeline installation, including butt joint sleeve, both ends of butt joint sleeve are slidably connected with the conveying pipe for conveying gas, both ends in the butt joint sleeve are provided with annular locking assembly for abutting against the outer wall of conveying pipe and adjusting the posture of conveying pipe, the outside of butt joint sleeve is provided with adjusting assembly for adjusting the locking state of annular locking assembly, the monitoring assembly for detecting gas leakage is arranged in the butt joint sleeve.The present application can control the opening and closing state of annular locking assembly through single operation of adjusting assembly, realizes the quick locking and release of gas pipeline.Compared with the traditional thread or flange connection bolt by bolt operation or destructive disassembly of welding, the dismounting time during installation, test and maintenance is significantly shortened.

Description

Technical Field

[0001] This invention relates to the field of gas pipeline installation technology, and more specifically to a docking device for gas pipeline installation. Background Technology

[0002] Natural gas, as a clean energy source, plays an increasingly important role in residential life and industrial production. The construction and installation of gas pipelines are fundamental to ensuring a safe and stable gas supply. To ensure the safety of gas pipelines during installation and use, the treatment of joints at gas pipeline connections has always been a key concern during the connection process.

[0003] In the prior art, Chinese invention patent CN111550622B discloses a docking device for industrial gas pipeline installation, including a gas pipeline body, a support bracket, and docking ring one and docking ring two welded to opposite sides of the gas pipeline body. Interlocking convex rings are welded to opposite sides of docking ring one and docking ring two, and annular grooves adapted to the convex rings are formed on opposite sides of both docking ring one and docking ring two. Threaded alignment rods with equal spacing are welded to the outer wall of one side of docking ring one, and the ends of the threaded alignment rods are threadedly connected to locking nuts. This patent, through the setting of locking rods, can effectively connect the two docking plates by cooperating with a Y-shaped cross-section groove, thereby effectively improving the strength of the gas pipeline body docking.

[0004] As can be seen from the technical solutions proposed in the aforementioned patent documents, these solutions still have significant shortcomings. For example, while locking the gas pipeline using the connection method described in the above technical solutions improves the strength of the gas pipeline connection, it also increases the time required for pipeline connection and the difficulty of pipeline disassembly. Specifically, gas pipelines need to be slightly adjusted according to the actual construction environment and specific working conditions before formal installation. Therefore, gas pipelines need to undergo a flow test before installation is completed. However, existing technologies, including the aforementioned solutions, mostly use threaded, flanged, or even welded methods for fixing gas pipelines. Gas flow tests are all conducted after pipeline installation. If problems are found during the flow test, the problematic pipeline needs to be disassembled for repair or replacement after troubleshooting. In this process, disassembling and reassembling threaded and flanged pipelines is not only time-consuming and labor-intensive, but also cannot guarantee that only two pipeline connection points in the entire gas pipeline laying will have problems. Multiple checks and repeated pipeline disassembly are required. Welded pipelines can only be disconnected by destructive means. Therefore, existing technologies urgently need a technical solution to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a docking device for gas pipeline installation, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A gas pipeline installation docking device includes a connecting pipe sleeve, both ends of which are slidably connected to a gas delivery pipe. Both ends inside the connecting pipe sleeve are equipped with annular locking components for pressing against the outer wall of the delivery pipe and adjusting the posture of the delivery pipe. An adjusting component for adjusting the locking state of the annular locking components is fitted on the outside of the connecting pipe sleeve. A monitoring component for detecting gas leaks is provided inside the connecting pipe sleeve.

[0008] The annular locking assembly includes multiple horizontal shafts slidably installed inside the connecting pipe sleeve. The inner wall of the connecting pipe sleeve has a waist hole for the horizontal shafts to slide through. Each of the multiple horizontal shafts is slidably fitted with a stop. A disc is rotatably connected to the outside of the connecting pipe sleeve. The disc has multiple arc-shaped grooves. The ends of the multiple horizontal shafts are slidably installed in the arc-shaped grooves. When the disc rotates, the multiple horizontal shafts slide back and forth in the waist hole, and the multiple stops are driven by the horizontal shafts to move closer to or away from the outer wall of the conveying pipe.

[0009] Further: A first spring is sleeved on the outside of the horizontal shaft. The two ends of the first spring abut against the inner wall of the connecting pipe sleeve and the side wall of the abutment, respectively. Rollers are rotatably connected to both sides of the abutment. Guide arc seats for cooperating with the rollers are fixedly connected to the inner walls of the connecting pipe sleeve on both sides of the waist hole. When the abutment moves away from the outer wall of the conveying pipe, the rollers and guide arc seats cooperate to make the abutment move laterally and compress the first spring.

[0010] Further: The adjustment assembly includes a ratchet fixedly installed on the outer wall of the connecting sleeve. The two discs are connected to the same hollow housing. The top of the hollow housing is provided with a placement platform. A lifting handle is slidably installed inside the placement platform. A drive ratchet plate is rotatably connected to the bottom of the lifting handle. The bottom of the drive ratchet plate extends into the gap of the ratchet. Multiple second springs and brake plates are fixedly installed at the bottom of the placement platform. The multiple second springs and the brake plates respectively abut against the side walls on both sides of the drive ratchet plate. The drive ratchet plate can only rotate in one direction due to the restriction of the ratchet and brake plates.

[0011] Furthermore: Two geometric brackets are fixedly installed on the top of the placement platform. Vertical rods are fixedly connected to the inner walls of the top of the two geometric brackets, and the two vertical rods pass through both ends of the lifting handle. A third spring is sleeved on the outside of the two vertical rods, and the two ends of the third spring abut against the inner wall of the top of the geometric bracket and the top of both ends of the lifting handle, respectively.

[0012] Further: The monitoring component includes a gas detector fixedly installed inside the connecting pipe sleeve. The connecting pipe sleeve has an annular cavity for installing the gas detector, and multiple air inlets for air intake are provided on both sides of the annular cavity.

[0013] Furthermore, a waterwheel is rotatably connected inside the annular cavity, and a fan blade is fixedly connected inside the waterwheel.

[0014] Furthermore, the end of the delivery pipe is provided with a sealing ring.

[0015] Due to the adoption of the above technical solution, the beneficial effects of this invention compared to the prior art are:

[0016] 1. This invention allows for the control of the opening and closing state of the annular locking assembly through a single adjustment of the component, enabling rapid locking and releasing of gas pipelines. Compared to the destructive disassembly of traditional threaded or flanged connections involving bolt-by-bolt operations or welding, this significantly reduces the disassembly and assembly time during installation, testing, and maintenance.

[0017] 2. The present invention sets up a monitoring component inside the docking device, which can actively capture and detect gas leaks at the pipe interface. Combined with the combination of water wheel and fan blade, it can detect potential leaks in real time during the passage testing stage, solving the safety blind spot problem of passive detection after installation in the traditional method.

[0018] 3. The annular locking assembly in this invention automatically compensates for the positional deviation of the pipeline end face during the locking process of the delivery pipe. It can correct the tilt posture of the pipeline to ensure coaxial connection, and actively press the sealing ring to eliminate interface gaps, thereby improving the sealing reliability and reducing the dependence on installation accuracy. Attached Figure Description

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the internal structure without the delivery pipe;

[0022] Figure 3 for Figure 2 Side sectional view;

[0023] Figure 4 for Figure 2 Front sectional view;

[0024] Figure 5 This is a schematic diagram of the connecting pipe sleeve in this invention;

[0025] Figure 6 for Figure 2 A magnified structural diagram of A in the middle;

[0026] Figure 7 for Figure 2 A magnified structural diagram of B in the diagram;

[0027] Figure 8 for Figure 3 A magnified structural diagram of C;

[0028] Figure 9 for Figure 4 A magnified structural diagram of D in the diagram.

[0029] In the diagram: 1. Connecting sleeve; 2. Conveying pipe; 3. Annular locking assembly; 4. Adjusting assembly; 5. Monitoring assembly; 6. Horizontal shaft; 7. Waist hole; 8. Abutment; 9. Disc; 10. Arc-shaped slide; 11. First spring; 12. Rotary roller; 13. Guide arc seat; 14. Ratchet; 15. Hollow outer shell; 16. Placement platform; 17. Lifting handle; 18. Drive ratchet plate; 19. Second spring; 20. Brake plate; 21. Frame; 22. Vertical rod; 23. Third spring; 24. Annular cavity; 25. Air inlet; 26. Water wheel; 27. Fan blade; 28. Sealing ring. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figures 1 to 9 As shown, the present invention provides a docking device for gas pipeline installation, including a connecting pipe sleeve 1. Both ends of the connecting pipe sleeve 1 are slidably connected to a delivery pipe 2 for conveying gas. Both ends inside the connecting pipe sleeve 1 are equipped with annular locking components 3 for pressing against the outer wall of the delivery pipe 2 and adjusting the posture of the delivery pipe 2. An adjusting component 4 for adjusting the locking state of the annular locking component 3 is sleeved on the outside of the connecting pipe sleeve 1. A monitoring component 5 for detecting gas leakage is provided inside the connecting pipe sleeve 1.

[0032] As a further explanation of this embodiment of the invention, in this embodiment, two gas delivery pipes 2 that need to be connected are respectively inserted into the connecting sleeve 1 from both ends. The annular locking component 3 is activated by the adjusting component 4, so that the output end of the annular locking component 3 presses against the outer wall of the delivery pipe 2. The two delivery pipes 2 are adjusted to be located at the center position of the connecting sleeve 1 and are coaxially arranged with the connecting sleeve 1. While locking the delivery pipes 2, the annular locking component 3 tightly fits the end of the delivery pipe 2 with the inner wall of the connecting sleeve 1, preventing gas from leaking from the joint between the delivery pipe 2 and the connecting sleeve 1.

[0033] Following this, a gas transmission path test is conducted. During the test, if a gas leak occurs at the joint between the transmission pipe 2 and the connecting sleeve 1, the monitoring component 5 detects the leaking gas and issues a gas leak warning, further enhancing the safety of the device during use. After the gas transmission path test is completed, the ring locking component 3 is reset by adjusting component 4, releasing the transmission pipe 2 and disconnecting it from the connecting sleeve 1. Compared to the threaded or flanged fixed connections in existing technologies, this device can control the connection or disconnection of the two transmission pipes 2 simply by manipulating the adjusting component 4, effectively improving the efficiency of gas pipeline connection and disassembly.

[0034] The specific application scenario for this device is at the construction site of gas pipelines. Specifically, gas pipelines, as a medium for long-distance gas transportation, are limited by distance factors, production equipment, and production processes, resulting in the assembly of multiple gas pipes. However, the existing gas pipeline splicing process is too complex and cumbersome, and it is impossible to conduct continuity testing before the gas pipeline is assembled. Therefore, by using this device to temporarily splice multiple gas pipes to form a gas pipeline and conduct continuity testing, not only can the testing efficiency of gas pipelines be effectively improved, but also the repetitive work of recalibration can be eliminated when fixing multiple gas pipes after the continuity test is completed. This not only improves the progress of gas pipeline construction work, but also further enhances the safety of gas pipeline construction after the work is completed.

[0035] As a preferred embodiment, the annular locking assembly 3 includes multiple horizontal shafts 6 slidably installed inside the connecting sleeve 1. The inner wall of the connecting sleeve 1 has a waist hole 7 for the horizontal shafts 6 to slide through. Each of the multiple horizontal shafts 6 is slidably fitted with abutment 8. A disc 9 is rotatably connected to the outside of the connecting sleeve 1. Multiple arc-shaped grooves 10 are opened inside the disc 9. The ends of the multiple horizontal shafts 6 are slidably installed in the arc-shaped grooves 10. When the disc 9 rotates, the multiple horizontal shafts 6 slide back and forth in the waist hole 7, and the multiple abutment 8 are driven by the horizontal shafts 6 to approach or move away from the outer wall of the conveying pipe 2.

[0036] As a further explanation of this embodiment of the invention, in this embodiment, when the disc 9 rotates, the horizontal axis 6 is restricted by the arc-shaped sliding groove 10, causing the horizontal axis 6 to slide back and forth in the waist hole 7, so that the bottom of the abutment 8 is close to or away from the axis of the connecting sleeve 1. During this process, multiple abutments 8 are equidistantly distributed along the circumferential direction of the connecting sleeve 1, and one end of the conveying pipe 2 is placed into the connecting sleeve 1. After the conveying pipe 2 loses its support force, it is tilted. When multiple abutments 8 approach the axis of the connecting sleeve 1, they gradually abut against the outer wall of the conveying pipe 2 and support the conveying pipe 2, adjusting the conveying pipe 2 to be coaxial with the connecting sleeve 1 and fixing it.

[0037] As a preferred embodiment, a first spring 11 is sleeved on the outside of the horizontal shaft 6. The two ends of the first spring 11 abut against the inner wall of the connecting sleeve 1 and the side wall of the abutment 8, respectively. Rollers 12 are rotatably connected to both sides of the abutment 8. Guide arc seats 13 for cooperating with the rollers 12 are fixedly connected to the inner walls of the connecting sleeve 1 on both sides of the waist hole 7. When the abutment 8 moves away from the outer wall of the conveying pipe 2, the rollers 12 and the guide arc seats 13 cooperate with each other to make the abutment 8 move laterally and compress the first spring 11.

[0038] As a further explanation of this embodiment, in this embodiment, when the conveying pipe 2 is fixed by multiple abutments 8, if the end of the conveying pipe 2 does not fit against the inner wall of the connecting sleeve 1, a gap will appear, leading to gas leakage. Therefore, a first spring 11 is added outside the horizontal shaft 6 to press against the side wall of the abutment 8, allowing the abutment 8 to slide laterally and making the end of the conveying pipe 2 fit against the inner wall of the connecting sleeve 1. In addition, the end of a typical conveying pipe 2 is provided with a flange. To avoid interference between the flange at the end of the conveying pipe 2 and the bottom of the abutment 8 when entering the connecting sleeve 1, the abutment 8 needs to be adjusted away from the axis of the connecting sleeve 1 before the conveying pipe 2 enters the connecting sleeve 1. However, the flange at the end of the conveying pipe 2 may not fit against the inner wall of the connecting sleeve 1. Therefore, the first spring 11 is compressed by the guide arc seat 13. Specifically, in this embodiment, the bottom of the guide arc seat 13 has an arc surface. When the abutment 8 drives the rotating roller 12 to move upward, the rotating roller 12 slides along the arc surface at the bottom of the guide arc seat 13, causing the abutment 8 to move upward. Simultaneously, the abutment 8 moves axially along the horizontal axis 6 and compresses the first spring 11, causing the abutment 8 to slide away from the inner wall of the connecting sleeve 1. At this time, the conveying pipe 2 is placed into the connecting sleeve 1. When the abutment 8 descends to lock the conveying pipe 2, the flange at the end of the conveying pipe 2 is between the abutment 8 and the inner wall of the connecting sleeve 1. The descending abutment 8 abuts against the outer wall of the conveying pipe 2, correcting the posture of the conveying pipe 2. The first spring 11 abuts against the side wall of the abutment 8. By pressing the flange at the end of the conveying pipe 2 with the abutment 8, the end of the conveying pipe 2 is pushed towards the inner wall of the connecting sleeve 1, thereby achieving the effect of correcting the posture of the conveying pipe 2 and attaching and fixing the conveying pipe 2 to the inner wall of the connecting sleeve 1.

[0039] As a preferred embodiment, the adjustment assembly 4 includes a ratchet 14 fixedly installed on the outer wall of the connecting sleeve 1, two discs 9 connected to the same hollow housing 15, a placement platform 16 on the top of the hollow housing 15, a lifting handle 17 slidably installed inside the placement platform 16, a drive ratchet plate 18 rotatably connected to the bottom of the lifting handle 17, and the bottom of the drive ratchet plate 18 extending into the gap of the ratchet 14. A plurality of second springs 19 and brake plates 20 are fixedly installed at the bottom of the placement platform 16, and the plurality of second springs 19 and brake plates 20 respectively abut against the side walls on both sides of the drive ratchet plate 18, and the drive ratchet plate 18 can only rotate in one direction due to the restriction of the ratchet 14 and brake plates 20.

[0040] As a further explanation of this embodiment, in this embodiment, by rotating the hollow outer shell 15, the discs 9 respectively fixedly installed on both sides of the hollow outer shell 15 are driven to rotate together, thereby adjusting the function of the abutment 8 to press against or loosen against the outer wall of the conveying pipe 2. During this process, the bottom of the drive ratchet plate 18 is engaged in the gap of the ratchet wheel 14. When it is necessary to adjust the disc 9, the lifting handle 17 needs to be pushed along the circumference of the hollow outer shell 15. Specifically, there are two situations. In the first situation, pushing the lifting handle 17 will cause the hollow outer shell 15 to rotate counterclockwise. The bottom of the drive ratchet plate 18 will abut against the gap of the ratchet wheel 14, and the brake plate 20 will abut against the drive ratchet plate 18, thereby restricting the hollow outer shell 15 and preventing it from rotating counterclockwise. In the second situation, pushing the lifting handle 17 will cause the hollow outer shell 15 to rotate clockwise. After being abutted by the ratchet teeth of the ratchet wheel 14, the drive ratchet plate 18 will rotate upward and compress the second spring 19, allowing the hollow outer shell 15 to rotate clockwise. By rotating the hollow outer shell 15 in one direction, the rotation angle of the disc 9 is adjusted, which in turn cooperates with multiple abutments 8 to lock the outer wall of the conveying pipe 2. After the abutments 8 press against the surface of the conveying pipe 2, the lifting handle 17 is stopped from being pushed. The ratchet 14 and the brake plate 20 restrict the reverse rotation of the drive ratchet plate 18, so that the abutments 8 continuously lock the outer wall of the conveying pipe 2.

[0041] To further improve the fit between the abutment 8 and the outer wall of the delivery pipe 2, an elastic sponge pad is added to the bottom of the abutment 8 to prevent damage to the outer wall of the delivery pipe 2. The deformation of the sponge pad increases the fit coefficient between the bottom of the abutment 8 and the outer wall of the delivery pipe 2. After the gas passage test of the delivery pipe 2 is completed, when the delivery pipe 2 needs to be released, the lifting handle 17 is pulled upward to pull the lifting handle 17 and the drive ratchet plate 18 upward, so that the bottom of the drive ratchet plate 18 is pulled out of the gap of the ratchet wheel 14, allowing the hollow outer shell 15 to rotate freely in both directions. After the hollow outer shell 15 is rotated back to its original position, the lifting handle 17 and the drive ratchet plate 18 are pressed down to reset, thus completing the entire process of the adjustment component 4 controlling the opening and closing of the ring locking component 3.

[0042] As a preferred embodiment, two geometric brackets 21 are fixedly installed on the top of the placement platform 16. Vertical rods 22 are fixedly connected to the inner walls of the top of the two geometric brackets 21, and the two vertical rods 22 pass through both ends of the lifting handle 17. A third spring 23 is sleeved on the outside of the two vertical rods 22, and the two ends of the third spring 23 abut against the inner wall of the top of the geometric bracket 21 and the top of both ends of the lifting handle 17, respectively.

[0043] As a further explanation of the embodiment of the present invention, in this embodiment, during the process of rotating the disc 9 by turning the lifting handle 17 to control the seat 8 to lock the conveying pipe 2, the lifting handle 17 cannot be pulled out from the placement platform 16. Therefore, a third spring 23 is added to restrict the lifting handle 17 and increase the stability of the lifting handle 17.

[0044] As a preferred embodiment, the monitoring component 5 includes a gas detector fixedly installed inside the connecting pipe sleeve 1. An annular cavity 24 for installing the gas detector is provided inside the connecting pipe sleeve 1. When the two delivery pipes 2 are connected to the connecting pipe sleeve 1, the annular cavity 24 is located between the two delivery pipes 2. Multiple air inlets 25 for air intake are provided on both sides of the annular cavity 24.

[0045] As a further explanation of this embodiment of the invention, in this embodiment, after the end of the delivery pipe 2 is connected to the inner wall of the connecting pipe sleeve 1, if a gas leak occurs and the pipe itself does not have a quality problem, then the gas leak point is more likely to occur at the pipe connection joint. Therefore, a gas detector (not shown in the figure) is installed in the connecting pipe sleeve 1. The gas detector detects the gas drifting from the air inlet 25 and issues a warning to avoid safety hazards.

[0046] In this embodiment, the annular cavity 24 is located in the middle of the connecting sleeve 1. When the two delivery pipes 2 are tightly attached to and block both ends of the connecting sleeve 1, the annular cavity 24 is located in the middle of the two delivery pipes 2. When the delivery pipes 2 are connected to the connecting sleeve 1, the two delivery pipes 2 and the interior of the connecting sleeve 1 form a sealed delivery channel. The air inlet 25 is distributed along the outer periphery of this delivery channel. Therefore, the opening of the air inlet 25 will not cause gas leakage in the delivery channel. Since the air inlet 25 is close to the connection point of the delivery pipes 2 and the connecting sleeve 1, the gas detector can detect the gas drifting in from the air inlet 25 more quickly.

[0047] As a preferred embodiment, a waterwheel 26 is rotatably connected inside the annular cavity 24, and a fan blade 27 is fixedly connected inside the waterwheel 26.

[0048] As a further explanation of this embodiment of the invention, in this embodiment, a movable seal such as an oil seal is provided at the rotatable connection between the water wheel 26 and the connecting sleeve 1 to prevent gas leakage during gas passage testing. When the gas is transported in the delivery pipe 2 and the connecting sleeve 1, the gas impacts the fan blade 27, causing the fan blade 27 to rotate. The rotation of the fan blade 27 in turn drives the water wheel 26 to rotate, which in turn accelerates the air flow rate in the annular cavity 24. If a gas leak occurs near the air inlet 25, the gas drifting near the air inlet 25 will enter the annular cavity 24 more quickly under the drive of the water wheel 26 and be detected by the gas detector, further improving the detection accuracy of the gas detector.

[0049] As a preferred embodiment, the end of the conveying pipe 2 is provided with a sealing ring 28.

[0050] As a further explanation of this embodiment of the invention, in this embodiment, when the conveying pipe 2 is connected to the connecting sleeve 1, the end of the conveying pipe 2 is tightly attached to the inner wall of the connecting sleeve 1, and a sealing ring 28 is fitted on the end of the conveying pipe 2. When the end of the conveying pipe 2 is pressed against the side wall of the connecting sleeve 1, the sealing ring 28 is deformed, sealing the connection gap between the conveying pipe 2 and the connecting sleeve 1, thereby further improving the airtightness of the connection between the conveying pipe 2 and the connecting sleeve 1.

[0051] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any way. Any person skilled in the art can make some modifications or alterations to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as the technology or embodiments that are substantially the same as the present invention.

Claims

1. Butt joining device for gas pipe installation, comprising a butt joining sleeve (1), characterized in that: Both ends of the butt joint sleeve (1) are slidably connected with a conveying pipe (2) for conveying gas, and the inner ends of the butt joint sleeve (1) are both provided with annular locking assemblies (3) for abutting against the outer wall of the conveying pipe (2) and adjusting the posture of the conveying pipe (2), the outer part of the butt joint sleeve (1) is provided with an adjusting assembly (4) for adjusting the locking state of the annular locking assembly (3), and the butt joint sleeve (1) is provided with a monitoring assembly (5) for detecting gas leakage; The annular locking assembly (3) comprises a plurality of horizontal shafts (6) slidably installed in the butt joint sleeve (1), the inner wall of the butt joint sleeve (1) is provided with a waist hole (7) for sliding of the horizontal shaft (6), the outer part of each of the horizontal shafts (6) is slidably sleeved with an abutment (8), the outer part of the butt joint sleeve (1) is rotatably connected with a disc (9), the disc (9) is provided with a plurality of arc-shaped sliding grooves (10) in the inner part, the end part of each of the horizontal shafts (6) is slidably installed in the arc-shaped sliding groove (10), and when the disc (9) rotates, each of the horizontal shafts (6) reciprocally slides in the waist hole (7), and each of the abutments (8) is driven by the horizontal shaft (6) to move close to or away from the outer wall of the conveying pipe (2). The outer part of the horizontal shaft (6) is sleeved with a first spring (11), the two ends of the first spring (11) abut against the inner wall of the butt joint sleeve (1) and the side wall of the abutment (8) respectively, the two sides of the abutment (8) are rotatably connected with rotating rollers (12), the inner walls of the butt joint sleeve (1) on both sides of the waist hole (7) are fixedly connected with guide arc seats (13) for cooperation with the rotating rollers (12), when the abutment (8) moves to the side away from the outer wall of the conveying pipe (2), the rotating roller (12) and the guide arc seat (13) cooperate with each other to make the abutment (8) move transversely and compress the first spring (11).

2. A butt joining device for gas pipe installation according to claim 1, characterized in that: The adjusting assembly (4) comprises a ratchet wheel (14) fixedly installed on the outer wall of the butt joint sleeve (1), both of the discs (9) are jointly connected with a same hollow housing (15), the top of the hollow housing (15) is provided with a placing table (16), the placing table (16) is slidably installed with a lifting handle (17), the bottom of the lifting handle (17) is rotatably connected with a driving ratchet plate (18), the bottom of the driving ratchet plate (18) extends into the gap of the ratchet wheel (14), the bottom of the placing table (16) is fixedly installed with a plurality of second springs (19) and a brake plate (20), the plurality of second springs (19) and the brake plate (20) abut against the side walls on both sides of the driving ratchet plate (18) respectively, and the driving ratchet plate (18) is limited to rotate in one direction by the ratchet wheel (14) and the brake plate (20).

3. A butt joining device for gas pipe installation according to claim 2, characterised in that: The top of the placing table (16) is fixedly provided with two L-shaped frames (21), the inner walls of the top of the two L-shaped frames (21) are fixedly connected with vertical rods (22), the two ends of the two vertical rods (22) penetrate through the two ends of the lifting handle (17), the outer parts of the two vertical rods (22) are both sleeved with third springs (23), and the two ends of the third spring (23) are tightly arranged on the top inner walls of the L-shaped frames (21) and the top of the two ends of the lifting handle (17).

4. The butt joining device for gas pipe installation according to claim 1, characterized in that: The monitoring assembly (5) comprises a gas detector fixedly installed in the butt joint pipe sleeve (1), an annular cavity (24) for installing the gas detector is formed in the butt joint pipe sleeve (1), when the two conveying pipes (2) are butted with the butt joint pipe sleeve (1), the annular cavity (24) is located between the two conveying pipes (2), and a plurality of air inlet holes (25) for air inlet are formed on the two sides of the annular cavity (24).

5. A butt joining device for gas pipe installation according to claim 4, characterised in that: A water wheel (26) is rotatably connected in the annular cavity (24), and a fan blade (27) is fixedly connected in the water wheel (26).

6. The butt joining device for gas pipe installation according to claim 1, characterized in that: The end of the conveying pipe (2) is provided with a sealing rubber ring (28).

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