Welding equipment for maintenance of long-distance pipeline network

Abstract

The invention provides long-distance pipe network maintenance welding equipment, and relates to the technical field of pipe network maintenance, the long-distance pipe network maintenance welding equipment comprises a first semicircular fixing sleeve and a second semicircular fixing sleeve, a fixing column is arranged on the side face of the first semicircular fixing sleeve, and a welding head is arranged on the fixing column; the fixing column is connected with the first semicircular fixing sleeve and the second semicircular fixing sleeve through a rotating mechanism, an air suction mechanism is arranged on the fixing column, and when the fixing column moves circumferentially, the air suction mechanism is used for sucking smoke generated in the welding process. A connecting mechanism is arranged between the first semicircular fixing sleeve and the second semicircular fixing sleeve and is used for connecting the first semicircular fixing sleeve and the second semicircular fixing sleeve; a worker does not need to weld the whole connecting position of the two pipelines through a welding tool, meanwhile, smoke can be sucked into the air cavity, and the situation that the worker is injured by the smoke generated in the welding process is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of pipeline maintenance technology, and in particular to welding equipment for long-distance pipeline maintenance. Background Technology

[0002] Currently, long-distance gas transmission pipeline systems typically consist of a gathering and transmission network, gas purification equipment, gas transmission trunk lines, compressor stations, distribution valve chambers, distribution stations (terminal pressure regulating and metering stations), management and maintenance stations, communication and remote control equipment, cathodic protection stations (or other electrical protection devices), and pipeline accessories. The gas collected from the gas source point is throttled and separated to remove free water, oil, and mechanical impurities before entering the gas gathering station through the gas gathering pipe.

[0003] To ensure safety, it is necessary to regularly inspect the pipe connections and perform maintenance welding on areas with leakage risks. In the current technology, maintenance welding of pipes is mostly done manually by operating welding tools to weld the connection between two pipes or specific leak points. This welding efficiency is low, and harmful fumes are generated during the welding process, which can cause certain damage to workers. Summary of the Invention

[0004] The purpose of this invention is to provide welding equipment for the maintenance of long-distance pipelines, so as to solve the technical problems of low welding efficiency and damage to workers caused by fumes generated during the welding process in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides a long-distance pipeline maintenance welding device, comprising a first semi-circular fixing sleeve and a second semi-circular fixing sleeve. The first semi-circular fixing sleeve has a fixing column on its side, and a welding head is provided on the fixing column. The fixing column is connected to the first semi-circular fixing sleeve and the second semi-circular fixing sleeve through a rotating mechanism. The rotating mechanism is used to drive the fixing column to perform circumferential motion. The fixing column is provided with a suction mechanism, which is used to extract the fumes generated during the welding process when the fixing column moves in a circular motion. A connecting mechanism is provided between the first semi-circular fixing sleeve and the second semi-circular fixing sleeve for connecting the first semi-circular fixing sleeve and the second semi-circular fixing sleeve.

[0006] Preferably, the connecting mechanism includes fixing blocks that are fixed to the sides of the first semi-circular fixing sleeve and the second semi-circular fixing sleeve and are symmetrically distributed. A bolt passes through the inside of the fixing block, and a nut that matches the bolt is fixed to the outside of one of the fixing blocks.

[0007] Preferably, a connecting column is fixed to the end of the fixed column, a first threaded rod passes through the inside of the connecting column, the first threaded rod is threadedly connected to the connecting column, and the end of the first threaded rod is fixedly connected to the welding head.

[0008] Preferably, the rotating mechanism includes a first semi-circular toothed ring disposed on the side of the first semi-circular fixed sleeve and the second semi-circular fixed sleeve, a fixed post passing through one of the first semi-circular toothed rings and fixedly connected thereto, the first semi-circular toothed ring being connected to a first rotating component, the first rotating component being used to drive the first semi-circular toothed ring to rotate, and a limiting component being provided inside the first semi-circular fixed sleeve and the second semi-circular fixed sleeve, the limiting component being used to limit the first semi-circular toothed ring.

[0009] Preferably, the first rotating assembly includes a mounting plate fixedly connected to the side wall of the first semi-circular fixed sleeve, a motor is fixedly mounted on the mounting plate, a rotating rod is mounted on the output end of the motor, the rotating rod passes through the mounting plate and is rotatably connected to the mounting plate, and a first gear is fixed at the end of the rotating rod, the first gear meshing with the first semi-circular gear ring.

[0010] Preferably, the limiting component includes arc-shaped grooves provided on the side walls of the first semi-circular fixing sleeve and the second semi-circular fixing sleeve. Arc-shaped plates are slidably connected inside the arc-shaped grooves. One end of the arc-shaped plate is fixedly connected to the first semi-circular toothed ring, and a locking block is fixed to the other end of the arc-shaped plate. The inner wall of the arc-shaped groove is provided with a locking groove that matches the locking block. The locking block is located inside the locking groove and is slidably connected to the locking groove.

[0011] Preferably, a pin is passed through the side wall of the second semi-circular fixing sleeve, and the pin is connected to the outer wall of the first semi-circular fixing sleeve through an elastic element, and one of the arc-shaped plates is provided with a pin groove that matches the pin.

[0012] Preferably, the suction mechanism includes an air chamber disposed inside the fixed column, a piston slidably connected inside the air chamber, a threaded sleeve fixedly connected to the piston, a second threaded rod threadedly connected to the threaded sleeve, the second threaded rod passing through the end of the fixed column and rotatably connected to it, the second threaded rod being connected to a second rotating assembly, the second rotating assembly being used to drive the second threaded rod to rotate, wherein an air pipe is fixed on the outer wall of the fixed column, and the air pipe is connected to the air chamber.

[0013] Preferably, the outer wall of the threaded sleeve is fixed with symmetrically distributed limiting blocks, and the inner wall of the air cavity is provided with symmetrically distributed limiting grooves. The limiting blocks are located inside the limiting grooves and are slidably connected to the limiting grooves.

[0014] Preferably, the second rotating assembly includes a second gear fixed to the end of the second threaded rod, and a second semi-circular toothed ring that can mesh with the second gear is fixed to the outside of both the first semi-circular fixed sleeve and the second semi-circular fixed sleeve.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects: The long-distance pipeline maintenance welding equipment provided by this invention involves placing two fixed sleeves around one of the pipelines during maintenance welding. At this time, the ends of the two first semi-circular toothed rings close together to form a complete toothed ring, and the ends of the two second semi-circular toothed rings close together to form a complete toothed ring. The first gear meshes with the first semi-circular toothed ring, causing the first semi-circular toothed ring to rotate. This allows the first semi-circular toothed plate to drive the welding head to move circumferentially through the fixed column. As a result, the welding head can perform maintenance welding on the connection between the two pipelines. This eliminates the need for workers to use welding tools to weld the entire connection or specific leak points of the two pipelines, effectively improving the efficiency of pipeline maintenance welding. During the circular motion of the fixed column, it also drives the second gear to rotate. While rotating, the second gear meshes with the second semi-circular gear ring, allowing it to rotate as well. The second gear drives the second threaded rod to rotate, which in turn drives the threaded sleeve to move. The threaded sleeve then drives the piston to move inside the gas chamber, creating a negative pressure inside. This allows the gas pipe to draw the fumes into the gas chamber, effectively preventing damage to workers caused by the fumes generated during welding. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the welding equipment provided in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the first semi-circular fixing sleeve and the second semi-circular fixing sleeve in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the connection structure between the first semi-circular toothed ring and the first semi-circular fixed sleeve in Embodiment 1 of the present invention; Figure 4 This is a front view of the internal structure of the fixed column in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the pipeline leakage detection component in Embodiment 2 of the present invention; Figure 6 for Figure 5 Schematic diagram of cross-sectional structure; Figure 7 for Figure 6 Schematic diagram of cross-sectional structure; Figure 8 for Figure 7 Enlarged structural diagram at point A; Figure 9 This is a schematic diagram of the internal structure of the detection piece in Example 2; Figure 10 for Figure 7 Enlarged structural diagram at point B; Figure 11 for Figure 10 Enlarged structural diagram at point C; Figure 12 A partial structural diagram of the auxiliary pressing component.

[0018] Figure label: 1-First semi-circular fixing sleeve; 2-Second semi-circular fixing sleeve; 3-Connecting mechanism; 31-Bolt; 32-Fixing block; 33-Nut; 4-Rotating mechanism; 41-First semi-circular gear ring; 42-First gear; 43-Rotating rod; 44-Mounting plate; 45-Motor; 46-Pin rod; 47-Pin groove; 48-Arc plate; 49-Clamping block; 410-Arc groove; 411-Clamping groove; 412-Elastic element; 5-Suction mechanism; 51-Second semi-circular gear ring; 52-Second gear; 53-Second threaded rod; 54-Air chamber; 55-Air pipe; 56-Limiting groove; 57-Piston; 58-Threaded sleeve; 59-Limiting... 6-Fixing post; 7-Welding head; 8-Connecting post; 9-First threaded rod; 101-Housing shell; 102-Inflation pump; 103-Walking wheel; 104-Telescopic component; 105-Retracting roller; 106-Sealing box; 107-Elastic sealing strip; 108-Elastic pressing strip; 109-Drainage hole; 110-Connecting hole; 111-Detection piece; 112-Conduit; 113-Detection hole; 114-Sealing cavity; 115-Absorbent cloth; 116-Wire; 117-Electric heating wire; 118-Pressing roller; 119-Connecting block; 120-Through hole; 121-Sealing airbag; 122-Air guide channel; 123-Detection cavity. Detailed Implementation

[0019] The present invention will be further explained below with reference to specific embodiments.

[0020] Example 1 like Figure 1-2As shown, the long-distance pipeline maintenance welding equipment provided in this embodiment includes a first semi-circular fixing sleeve 1 and a second semi-circular fixing sleeve 2. The first semi-circular fixing sleeve 1 has a fixing post 6 on its side, and a welding head 7 is provided on the fixing post 6. The fixing post 6 is connected to the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2 through a rotating mechanism 4. The rotating mechanism 4 is used to drive the fixing post 6 to make a circular motion. The fixing post 6 is provided with a suction mechanism 5. When the fixing post 6 moves in a circular motion, the suction mechanism 5 is used to suck up the fumes generated during the welding process. A connecting mechanism 3 is provided between the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2. The connecting mechanism 3 is used to connect the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2. In this embodiment, when performing maintenance welding on long-distance pipelines, the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2 are fitted over one of the pipelines, and the welding head 7 is aligned with the connection point between the pipeline and another pipeline. Then, the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2 are fixed by the connecting mechanism 3, thereby ensuring the stability between them. At this point, the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2 form a complete fixing sleeve. After the connection is complete, the rotating mechanism 4 drives the fixing column 6 to rotate, which in turn drives the welding head 7 to rotate. This allows the welding head 7 to perform maintenance welding on the connection point of two pipelines or a leaking area, effectively improving the efficiency of pipeline maintenance welding. Furthermore, the fixing column 6 is connected to a suction mechanism 5, which absorbs the fumes into the fixing column 6, effectively preventing harm to workers caused by harmful fumes generated during welding.

[0021] Please see Figure 2 The connecting mechanism 3 includes fixing blocks 32 that are fixed to the sides of the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2 and are symmetrically distributed. A bolt 31 passes through the inside of the fixing block 32, and a nut 33 that matches the bolt 31 is fixed to the outside of one of the fixing blocks 32. During pipeline maintenance welding, the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2 are placed on the outside of one of the pipelines. Then, the bolt 31 is passed through the fixing block 32 and threadedly connected to the nut 33. The fixing block 32 is pressed together by the bolt 31 and the nut 33, which in turn fixes the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2, effectively improving the stability between the two.

[0022] Please see Figure 4 The fixed column 6 has a connecting column 8 fixed at its end. A first threaded rod 9 passes through the connecting column 8. The first threaded rod 9 is threadedly connected to the connecting column 8. The end of the first threaded rod 9 is fixedly connected to the welding head 7. After the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2 are connected, the distance between the welding head 7 and the pipe can be adjusted by rotating the first threaded rod 9, so that the welding head 7 can weld the connection between the two pipes.

[0023] Please see Figure 1 The rotating mechanism 4 includes a first semi-circular toothed ring 41 disposed on the side of the first semi-circular fixed sleeve 1 and the second semi-circular fixed sleeve 2. A fixed post 6 passes through one of the first semi-circular toothed rings 41 and is fixedly connected to it. The first semi-circular toothed ring 41 is connected to a first rotating component, which is used to drive the first semi-circular toothed ring 41 to rotate. The first semi-circular fixed sleeve 1 and the second semi-circular fixed sleeve 2 are provided with a limiting component, which is used to limit the first semi-circular toothed ring 41. After the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2 are connected, the two first semi-circular toothed rings 41 fit together to form a complete toothed ring. Then, the first rotating component drives the two first semi-circular toothed rings 41 to rotate synchronously. When one of the first semi-circular toothed rings 41 rotates, it can drive the fixing column 6 to make a circular motion, so that the fixing column 6 can drive the welding head 7 to make a circular motion, thereby realizing the welding of the entire connection of the two pipes, effectively improving the maintenance welding efficiency of the pipes. The limiting component can play a limiting role for the first semi-circular toothed ring 41, effectively improving the stability of the first semi-circular toothed ring 41 during rotation.

[0024] Please see Figure 1 The first rotating assembly includes a mounting plate 44 fixedly connected to the side wall of the first semi-circular fixed sleeve 1. A motor 45 is fixed on the mounting plate 44. A rotating rod 43 is installed at the output end of the motor 45. The rotating rod 43 passes through the mounting plate 44 and is rotatably connected to the mounting plate 44. A first gear 42 is fixed at the end of the rotating rod 43. The first gear 42 meshes with the first semi-circular toothed ring 41. When performing maintenance welding on the pipeline, the motor 45 is started. The motor 45 drives the first gear 42 to rotate through the rotating rod 43. The first gear 42 meshes with the first semi-circular toothed ring 41, causing the first semi-circular toothed ring 41 to rotate. This allows the first semi-circular toothed plate to drive the welding head 7 to move in a circular motion through the fixed column 6, thereby completing the maintenance welding at the pipeline connection.

[0025] Please see Figure 3The limiting component includes an arc-shaped groove 410 disposed on the side wall of the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2. An arc-shaped plate 48 is slidably connected inside the arc-shaped groove 410. One end of the arc-shaped plate 48 is fixedly connected to the first semi-circular toothed ring 41, and a locking block 49 is fixed to the other end of the arc-shaped plate 48. A locking groove 411 adapted to the locking block 49 is provided on the inner wall of the arc-shaped groove 410. The locking block 49 is located inside the locking groove 411 and is slidably connected to the locking groove 411. While the first semi-circular toothed ring 41 rotates, it drives the arc plate 48 to move inside the arc groove 410. The arc plate 48 drives the locking block 49 to move inside the locking groove 411. The locking groove 411, through the locking block 49, plays a limiting role on the arc plate 48, and thus plays a limiting role on the first semi-circular toothed ring 41, effectively improving the stability of the first semi-circular toothed ring 41 during rotation.

[0026] Please see Figure 3 A pin 46 is inserted through the side wall of the second semi-circular fixing sleeve 2. The pin 46 is connected to the outer wall of the first semi-circular fixing sleeve 1 through an elastic element 412. One of the arc-shaped plates 48 has a pin groove 47 that matches the pin 46 inside. After the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2 are connected together, the pin 46 is pulled out from the pin groove 47. Then, the rotation of the first semi-circular toothed ring 41 drives the fixing post 6 to move in a circular motion. After the fixing post 6 rotates one revolution, the end of the pin 46 automatically enters the pin groove 47 (not shown in the figure) under the action of the elastic element 412. The elastic element 412 can be a spring. At this time, the pin 46 fixes the arc plate 48 through the pin groove 47, effectively preventing the arc plate 48 from falling out of the arc groove 410 after the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2 are separated.

[0027] Please see Figure 4 The suction mechanism 5 includes an air chamber 54 disposed inside the fixed column 6. A piston 57 is slidably connected inside the air chamber 54. A threaded sleeve 58 is fixedly connected to the piston 57. A second threaded rod 53 is threadedly connected to the threaded sleeve 58. The second threaded rod 53 passes through the end of the fixed column 6 and is rotatably connected to it. The second threaded rod 53 is connected to a second rotating assembly. The second rotating assembly is used to drive the second threaded rod 53 to rotate. An air pipe 55 is fixed on the outer wall of the fixed column 6. The air pipe 55 communicates with the air chamber 54. During pipeline maintenance welding, the second rotating component drives the second threaded rod 53 to rotate, the second threaded rod 53 drives the threaded sleeve 58 to move, and the threaded sleeve 58 drives the piston 57 to move inside the air chamber 54. A negative pressure is formed inside the air chamber 54, which allows the air pipe 55 to draw the fumes into the air chamber 54, effectively avoiding damage to the workers caused by the fumes generated during the welding process.

[0028] Please see Figure 4 The threaded sleeve 58 has symmetrically distributed limiting blocks 59 fixed on its outer wall, and the air cavity 54 has symmetrically distributed limiting grooves 56 on its inner wall. The limiting blocks 59 are located inside the limiting grooves 56 and are slidably connected to the limiting grooves 56. As the threaded sleeve 58 moves, it drives the limiting block 59 to move inside the limiting groove 56. The limiting groove 56, through the limiting block 59, plays a limiting role on the threaded sleeve 58, effectively improving the stability of the threaded sleeve 58 when it moves.

[0029] Please see Figure 1 The second rotating assembly includes a second gear 52 fixed to the end of the second threaded rod 53, and a second semi-circular toothed ring 51 that can mesh with the second gear 52 is fixed to the outside of both the first semi-circular fixed sleeve 1 and the second semi-circular fixed sleeve 2. When the first semicircular fixing sleeve 1 and the second semicircular fixing sleeve 2 are connected together, the ends of the two second semicircular toothed rings 51 are attached to form a complete toothed ring. During the circumferential movement of the fixing column 6, the second gear 52 is also driven to rotate. While the second gear 52 is rotating, it meshes with the second semicircular toothed ring 51, so that the second gear 52 can also rotate during the circumferential movement, thereby enabling the second threaded rod 53 to rotate.

[0030] Working principle: When performing maintenance welding on long-distance pipelines, the equipment places the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2 on the outside of one of the pipelines, aligning the welding head 7 with the connection between this pipeline and another pipeline or a specific leak location. Then, the bolt 31 is passed through the fixing block 32 and threadedly connected to the nut 33. The bolt 31 and nut 33 press the fixing block 32 together, thus fixing the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2. At this time, the ends of the two first semi-circular toothed rings 41 and 51 close together to form a complete toothed ring, and the ends of the two second semi-circular toothed rings 51 close together to form a complete toothed ring. Then, the motor 45 is started, and the motor 45 drives the first gear 42 to rotate via the rotating rod 43. The first gear 42 interacts with the first semi-circular toothed rings 41... The meshing of the first semi-circular toothed ring 41 causes the first semi-circular toothed plate to rotate, which in turn causes the welding head 7 to rotate circumferentially via the fixed column 6. This allows the welding head 7 to perform maintenance welding on the connection between the two pipes. During the circumferential movement of the fixed column 6, the second gear 52 also rotates circumferentially. The second gear 52 meshes with the second semi-circular toothed ring 51 during its circumferential movement, allowing it to rotate on its own axis. The second gear 52 drives the second threaded rod 53 to rotate, which in turn drives the threaded sleeve 58 to move. The threaded sleeve 58 drives the piston 57 to move inside the air chamber 54, creating a negative pressure inside the air chamber 54. This allows the air pipe 55 to draw the fumes into the air chamber 54, effectively preventing damage to workers caused by the fumes generated during welding.

[0031] Example 2 This embodiment is basically the same as embodiment 1, except that: The long-distance pipeline maintenance welding equipment disclosed in this embodiment also includes a pipeline leakage detection component. The pipeline leakage detection component is fitted on the pipeline and the front end of the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2. It is used to detect the pipeline. After the leakage location is found, the first semi-circular fixing sleeve 1 and the second semi-circular fixing sleeve 2 can be moved forward to the leakage location and welded to reinforce it.

[0032] The long-distance pipeline leakage detection component includes: a housing 101, which is provided with a detection chamber 123 and a sealing chamber 114, and has a semi-circular hole. There are two sets of housings 101, which are detachably connected. The two sets of housings 101 are combined to form a circular hole for the pipeline to pass through. Multiple sets of traveling wheels 103 are also provided in the semi-circular hole of the housing 101. The traveling wheels 103 are electric wheels. It also includes a detection mechanism for leakage detection. The detection mechanism includes a detection hole 113 opened on the wall of the semi-circular hole of the housing 101. Multiple sets of detection holes 113 are arranged in a circumferential array on the wall of the semi-circular hole of the housing 101. The detection holes 113 are connected to the detection cavity 123. Each set of detection holes 113 is provided with a detection component. And a sealing mechanism for temporary treatment of leakage, the sealing mechanism includes a sealing component and an auxiliary pressing component for use in conjunction with the sealing component. The sealing component is provided in the sealing cavity 114 of each of the two sets of housings 101, and the two sets of sealing components are sealed and connected by a connecting component. One set of housings 101 is also provided with an actuating component for driving the sealing component to work.

[0033] In use, the two sets of housings 101 can be spliced ​​together using screws. The pipe passes through the circular hole formed by the combination of the two sets of housings 101, and the traveling wheel 103 presses against the surface of the pipe. In practical applications, a set of long-distance pipeline leakage detection components can be installed on the pipeline at certain intervals. The traveling wheel 103 enables the entire device to move on the pipeline. During the movement, the detection component can detect the location of the leak in time. When the leak location is detected, the traveling wheel 103 will drive the entire device to move forward or backward a certain distance, making it easier to move the sealing cavity 114 to the location of the leak. The starting component drives the sealing component to work, and the sealing component can temporarily seal the leak, thus facilitating subsequent welding.

[0034] In one embodiment of the present invention, please refer to Figures 1-8 One detection cavity 123 is provided on each side of the sealing cavity 114; The detection assembly includes a detection piece 111 fixedly installed in the detection hole 113. The bottom of the detection piece 111 has a concave arc-shaped structure, and two wires 116 are also provided inside the detection piece 111. The bottom of the detection piece 111 is provided with an absorbent cloth 115 for connecting the two sets of wires 116. The detection plate 111 is also equipped with an electric heating wire 117 for drying the absorbent cloth 115. Multiple sets of electric heating wires 117 are provided on both sides of the absorbent cloth 115.

[0035] In this embodiment, both the detection pad 111 and the absorbent cloth 115 have concave arc-shaped bottoms, and the curvature of this structure is the same as the curvature of the semi-circular hole wall inside the housing 101, which facilitates the movement of the absorbent cloth 115 against the surface of the pipe. In use, the wires 116 in each set of detection pads 111 are connected in parallel to the same warning circuit or warning system. The warning circuit or warning system adopts existing publicly available technology. When the absorbent cloth 115 slides past the leak, the leaked water wets the absorbent cloth 115, making it conductive, thereby connecting the two sets of wires 116. The power supply is connected, thereby activating the warning circuit or system and enabling the warning function. The electric heating wire 117 dries the wetted absorbent cloth 115, facilitating its reuse. Both ends of the sealing cavity 114 are equipped with detection chambers 123, allowing for leakage detection during forward or backward movement. A water immersion sensor can also be installed within the detection chamber 123 to promptly detect water entering it, providing auxiliary detection. A drain hole 109 is also provided at the bottom of the detection chamber 123 to drain water. More preferably, a ceramic heating element can replace the electric heating wire 117. The ceramic heating element is connected to the power supply, and when energized, it dries the absorbent cloth 115.

[0036] The sealing assembly includes: a sealing box 106 fixed in the sealing cavity 114, with connecting holes 110 at both the upper and lower ends of the sealing box 106, and an opening at the end of the sealing box 106 away from the sealing cavity 114; and an elastic sealing strip 107, which is fixedly installed in the opening of the sealing box 106, forming a sealed cavity structure between the sealing box 106 and the elastic sealing strip 107. The connecting component includes: a connecting block 119, one end of which is fixedly installed in one of the connecting holes 110, and the other end of which is provided with a sealing airbag 121, and the connecting block 119 has an air guiding cavity; a through hole 120, multiple sets of through holes 120 are opened at both ends of the connecting block 119, and the through holes 120 communicate with the air guiding cavity in the connecting block 119; and an air guiding channel 122 opened on the side wall of the connecting block 119, the air guiding channel 122 being used for communication between the sealing airbag 121 and the cavity in the connecting block 119; The starting component includes an air pump 102 fixedly mounted on the housing 101, and the output end of the air pump 102 is connected to one of the sealing boxes 106 through a conduit 112. The auxiliary components include: The telescopic component 104 is fixedly installed on the sealing box 106. Two sets of pressing rollers 118 are symmetrically arranged on the telescopic end of the telescopic component 104. The telescopic component 104 can be an electric telescopic rod. The take-up roller 105 is rotatably installed inside the sealing box 106, and two sets of take-up rollers 105 are symmetrically arranged inside the sealing box 106. A motor for driving the take-up rollers 105 to rotate is also provided in the side wall of the sealing box 106. And an elastic pressing belt 108, one end of which is fixedly connected to the end of the sealing box 106, and the other end of which passes through the pressing roller 118 and is fixedly connected to the winding roller 105. Two sets of auxiliary components are symmetrically arranged inside the sealing box 106.

[0037] In this embodiment, after the two sets of housings 101 are connected, the connecting block 119 is inserted into the connecting hole 110 of the opposing sealing box 106, so that the two sets of sealing boxes 106 can communicate with each other. When the sealing cavity 114 moves to the leak, the air pump 102 can introduce gas through the conduit 112 into one of the sealing boxes 106. The connecting block 119 can make both sets of sealing boxes 106 filled with gas. After the gas completely fills the cavity between the sealing box 106 and the elastic sealing strip 107, it will exert pressure on the elastic sealing strip 107, so that the elastic sealing strip 107 is in full contact with the pipe surface, realizing the sealing function. After the elastic sealing strip 107 is completely pressed onto the pipe surface, the air pump 102 continues to work, so that some gas can enter the sealing airbag 121 through the air guide channel 122, so that... The sealing airbag 121 expands, and the expanded sealing airbag 121 will fully fill the connection between the connecting block 119 and the connecting hole 110, thereby improving the sealing performance of the connection between the two sets of sealing boxes 106. Finally, the auxiliary components start to work. Specifically, the telescopic component 104 will drive the pressing roller 118 to press onto the elastic sealing strip 107. At the same time, the motor drives the winding roller 105 to rotate, and the winding roller 105 will wind up the elastic pressing strip 108, so that the elastic pressing strip 108 is completely pressed onto the elastic sealing strip 107. Through the cooperative arrangement of the two sets of elastic pressing strips 108, one side of the elastic sealing strip 107 can be fully pressed. Through the mutual cooperation of the auxiliary components in the two sets of sealing boxes 106, the elastic sealing strip 107 can be pressed in the circumferential direction, further improving the sealing effect.

[0038] In this embodiment, the long-distance pipeline leakage detection component can be used as an independent component or as a detection unit in the welding equipment in Embodiment 1. During operation, the leakage detection component is first used to inspect the pipeline. If a leak is found, a temporary sealing treatment is first performed to avoid waste and expansion, and to create ample preparation time for subsequent welding sealing. Before welding, the water can be temporarily stopped, the elastic sealing strip 107 can be removed, and then the welding process can be started.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A long distance pipeline maintenance welding apparatus comprising a first half-circular fixing sleeve and a second half-circular fixing sleeve; characterized in that, The first semicircular fixing sleeve side is provided with a fixed column, and a welding head is arranged on the fixed column.

2. The long pipeline maintenance welding apparatus of claim 1, wherein, The connecting mechanism comprises fixed blocks fixed on the side of the first semicircular fixing sleeve and the second semicircular fixing sleeve and symmetrically distributed, and bolts are penetrated through the fixed blocks.

3. The long pipeline maintenance welding apparatus of claim 1, wherein, The end of the fixed column is fixedly connected with a connecting column, a first threaded rod is penetrated through the connecting column, and the first threaded rod is in threaded connection with the connecting column.

4. The long pipeline maintenance welding apparatus of claim 1, wherein, The rotating mechanism comprises first semicircular tooth rings arranged on the side of the first semicircular fixing sleeve and the second semicircular fixing sleeve, the fixed column is penetrated through one of the first semicircular tooth rings and fixedly connected with the first semicircular tooth ring, the first semicircular tooth ring is connected with a first rotating assembly, the first rotating assembly is used for driving the first semicircular tooth ring to rotate, and a limiting assembly is arranged in the first semicircular fixing sleeve and the second semicircular fixing sleeve.

5. The long pipeline maintenance welding apparatus of claim 4, wherein, The first rotating assembly comprises a mounting plate fixedly connected with the side wall of the first semicircular fixing sleeve, a motor fixedly connected with the mounting plate, a rotating rod mounted on the output end of the motor and in rotating connection with the mounting plate, and a first gear fixedly connected with the end of the rotating rod and engaged with the first semicircular tooth ring.

6. The long pipeline maintenance welding apparatus of claim 4, wherein, The limiting assembly comprises arc-shaped grooves arranged on the side wall of the first semicircular fixing sleeve and the second semicircular fixing sleeve, and arc-shaped plates slidably connected in the arc-shaped grooves.

7. The long pipeline maintenance welding apparatus of claim 6, wherein, The second semicircular fixing sleeve side wall is penetrated through a pin rod, the pin rod is connected with the first semicircular fixing sleeve outer wall through an elastic piece, and one of the arc-shaped plates is internally provided with a pin groove matched with the pin rod.

8. The long pipeline maintenance welding apparatus of claim 1, wherein, The air suction mechanism comprises an air cavity arranged in the fixed column, a piston slidably connected in the air cavity, a threaded sleeve fixedly connected with the piston, a second threaded rod in threaded connection with the threaded sleeve, the second threaded rod is penetrated through the end of the fixed column and in rotating connection with the fixed column, the second threaded rod is connected with a second rotating assembly, the second rotating assembly is used for driving the second threaded rod to rotate, a gas pipe is fixedly connected with the outer wall of the fixed column, and the gas pipe is in communication with the air cavity.

9. The long pipeline maintenance welding apparatus of claim 8, wherein, The threaded sleeve outer wall is fixedly connected with limiting blocks symmetrically distributed, the air cavity inner wall is provided with limiting grooves symmetrically distributed, and the limiting blocks are located in the limiting grooves and in sliding connection with the limiting grooves.

10. The long pipeline maintenance welding apparatus of claim 8, wherein, The second rotating assembly comprises a second gear fixed at the end of the second threaded rod, and a second semicircular tooth ring capable of engaging with the second gear is fixed outside the first and second semicircular fixing sleeves.

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