A rapid sealing device and method for underground pipeline networks

Abstract

This application relates to the field of rapid sealing technology for underground pipeline networks, and in particular to a rapid sealing device and method for underground pipeline networks, including a horizontal frame, an alignment mechanism, and a support mechanism. In the support mechanism designed in this invention, an arc-shaped plate is moved to the damaged part of the pipeline, pulled downwards, and a replacement pipe is placed on the arc-shaped plate. The damaged pipeline is first cut off, and then the replacement pipe is cut to the same length as the damaged pipeline using the same cutting trajectory. Moving the arc-shaped plate upwards moves the cut replacement pipe to the pipeline to be sealed, thus eliminating the need for repeated movement and fine-tuning of the replacement pipe to make it snap into place at the pipeline to be sealed, improving the efficiency of snapping the replacement pipe into place at the pipeline to be sealed.

Description

Technical Field

[0001] This application relates to the field of rapid sealing technology for underground pipeline networks, and in particular to a rapid sealing device and method for underground pipeline networks. Background Technology

[0002] Pipelines are laid for transporting liquids, gases or loose solids. They can be divided into cast steel pipes, plastic pipes and cement pipes, etc. They are commonly used in oil and gas transportation, water transportation and other occasions. When laying pipelines in sewage treatment plants, it is often necessary to dig underground tunnels to reduce odor and prevent pipelines from being damaged by the sun. The pipelines used in sewage treatment are then laid along the underground tunnels. In order to facilitate the later maintenance and replacement of pipelines, the width of the underground tunnels often needs to be much larger than the diameter of the pipeline.

[0003] When a pipe is damaged, it is usually necessary to seal both ends of the damaged section, cut off the damaged pipe, replace it with a new replacement pipe, and weld it in place.

[0004] For example, a water conservancy pipeline replacement device with publication number CN214946849U includes a movable block. Arc-shaped grooves are provided on both sides of the bottom end of the movable block, and ball bearings are installed on the inner arc wall of each arc-shaped groove. An mounting plate is provided directly above the movable block, and wheels are fixedly installed at the four corners of the bottom end of the mounting plate. A second dovetail groove is provided at the bottom end of the mounting plate, and a second dovetail block is slidably connected within the second dovetail groove. This invention includes a second dovetail groove and a return spring, which effectively helps the movable block to return to its original position. Then, rotating the locking screw allows the arc-shaped clamping block to be removed from the pipeline, enabling the replacement of the next section of steel pipe. Furthermore, because the directions of the thrust and the force on the arc-shaped clamping block are staggered on the horizontal plane, the stability of the force on the arc-shaped clamping block is effectively ensured, preventing slippage and unstable installation, greatly improving work efficiency and reducing the labor intensity of operators.

[0005] However, the above-mentioned existing technologies still have some defects in pipeline replacement and plugging: 1. The replacement pipe is prefabricated and cut during the pipeline plugging process of the above-mentioned device. Therefore, when the replacement pipe is aligned and clamped with the pipeline, it needs to be moved slightly so that the replacement pipe is completely clamped between the pipeline, which increases the time for the replacement pipe to be aligned and clamped with the pipeline and reduces the replacement efficiency of the replacement pipe.

[0006] 2. During the alignment process between the replacement pipe and the pipeline, the replacement pipe was not locked in place. As a result, the replacement pipe may rotate or slide during the subsequent welding process, affecting the welding effect of the replacement pipe onto the pipeline.

[0007] Based on the above points, there is still room for improvement in the existing technology for the rapid sealing of underground pipeline networks. Summary of the Invention

[0008] To address the aforementioned technical problems, this application provides a rapid sealing device and method for underground pipeline networks, employing the following technical solution:

[0009] In a first aspect, there is a rapid sealing device for underground pipelines, comprising a horizontal frame, wherein the upper end face of the horizontal frame is provided with an alignment mechanism for aligning a replacement pipe with the pipeline and a support mechanism for placing the replacement pipe on the left and right sides respectively.

[0010] The alignment mechanism includes a movable block that is located on the left side of the upper end face of the horizontal frame and can slide left and right. A support rod and a limiting ring that can be opened and closed and used to connect with the pipeline are installed sequentially from bottom to top on the upper end face of the movable block. Two sets of symmetrical alignment parts are provided on the outer circumferential surface of the limiting ring. Alignment blocks for aligning the replacement pipe with the pipeline are installed on the alignment parts.

[0011] The supporting mechanism includes an elastic telescopic rod 1 fixed to the right end face of the horizontal frame. An arc-shaped plate for fixing and limiting the replacement tube is installed on the upper end face of the telescopic end of the elastic telescopic rod 1. A fixing component for fixing the telescopic end of the elastic telescopic rod 1 is installed together on the horizontal frame and the elastic telescopic rod 1.

[0012] Preferably, the limiting ring consists of two semi-circular rings, the lower ends of which are mounted on the upper end face of the support rod via hinges, and the upper ends of which are connected to each other via fastening bolts.

[0013] The alignment component includes an arc-shaped tube fixed on the outer circumferential surface of a semi-circular ring. Multiple C-shaped alignment connecting tubes are evenly installed on the arc-shaped tube along its length. The longer section of the alignment connecting tube is connected to the arc-shaped tube on the same side. The shorter section of the alignment connecting tube is equipped with a sealing block that can automatically reset. The end of the sealing block away from the corresponding alignment connecting tube is fixedly connected to the alignment block.

[0014] Preferably, the fixing component includes a horizontal plate fixed to the elastic telescopic rod and extending to the left and right. The horizontal plate has a symmetrical connecting groove extending through it. A locking block that slides left and right is limited inside the connecting groove. A rubber pad is installed at one end of the locking block near the telescopic section of the elastic telescopic rod. Two sets of symmetrical tapered teeth that cooperate with the rubber pad are installed on the upper side of the circumference of the telescopic section of the elastic telescopic rod. Each set of tapered teeth is evenly distributed from top to bottom. A linkage rod is installed on the front side of the two locking blocks.

[0015] Preferably, a sliding block that can slide left and right is provided on the upper end surface of the horizontal frame and below the left connecting groove. An elastic telescopic rod two that cooperates with the left locking block is installed on the upper end surface of the sliding block. The upper end of the telescopic end of the elastic telescopic rod two is fixedly connected to the left locking block. A pin for limiting the telescopic section of the elastic telescopic rod two is provided on the left end surface of the fixed section of the elastic telescopic rod two.

[0016] Preferably, the upper end face of the arc-shaped plate is engaged with a corresponding arc-shaped connecting plate, and support protrusions are installed on both the front and rear sides of the outer arc-shaped face of the arc-shaped plate. Connecting protrusions that engage with the support protrusions on the same side are installed on both the front and rear sides of the outer arc-shaped face of the arc-shaped connecting plate. A fixing rod is engaged between the connecting protrusions and the support protrusions on the same side.

[0017] Preferably, a push rod is installed between the support rod and the sliding block. An L-shaped support plate is provided on the upper end face of the horizontal frame and on the right side of the support rod. The vertical section of the support plate is fixed on the horizontal frame. An air inlet is installed on the horizontal section of the support plate. A locking rod that can automatically reset is installed at the lower end of the air inlet. A locking hole that cooperates with the locking rod is opened on the upper end face of the moving block.

[0018] Preferably, a plurality of first-class rolling balls are evenly arranged circumferentially on the inner circumferential surface of the limiting ring, and a plurality of second-class rolling balls are evenly arranged on the side of the alignment block away from the sealing block.

[0019] Secondly, a method for rapid sealing of underground pipelines includes the following steps: S1: Placement: Place the horizontal frame below the pipeline to be sealed, adjust the position of the horizontal frame by the cooperation of two semi-circular rings, and then fix the horizontal frame on the ground.

[0020] S2: Clamping and Cutting: After sealing the pipe, place the replacement pipe on the arc plate, cut the damaged pipe with the existing cutting blade, and then cut both ends of the replacement pipe along its original trajectory with the existing cutting blade.

[0021] S3: Alignment Processing: The cut replacement pipe can be moved between the cut pipes by moving the arc plate.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. In the support mechanism designed in this invention, the arc-shaped plate is moved to the damaged part of the pipe, pulled down and the replacement pipe is placed on the arc-shaped plate. The damaged pipe is first cut off, and then the replacement pipe is cut to the same length as the damaged pipe using the same cutting trajectory. The arc-shaped plate is moved upward to move the cut replacement pipe to the part of the pipe to be sealed. This eliminates the need to repeatedly move the replacement pipe for fine-tuning to make it snap into place at the part of the pipe to be sealed, thus improving the efficiency of snapping the replacement pipe into place at the part of the pipe to be sealed.

[0024] 2. In the alignment mechanism designed in this invention, the alignment component and the alignment block cooperate with each other to align the pipe and the replacement pipe, and at the same time cooperate with the arc plate to limit the replacement pipe, ensuring the stability of the replacement pipe during the pipe replacement and sealing process.

[0025] 3. The ball bearing 1 and ball bearing 2 designed in this invention cooperate with each other to reduce the damage to the pipe and replacement pipe caused by the limiting ring and the alignment block, respectively. At the same time, they reduce the friction between the limiting ring and the pipe, and between the alignment block and the replacement pipe, thus protecting the pipe and the replacement pipe. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the three-dimensional installation structure between the present invention and the pipeline and replacement pipe.

[0027] Figure 2 This is a three-dimensional structural schematic diagram of the present invention.

[0028] Figure 3 This is a schematic diagram of the three-dimensional installation structure between the support rod, the limiting circular block, and the alignment block of the present invention.

[0029] Figure 4 This is a schematic diagram of the three-dimensional installation structure between the support frame and the horizontal frame of the present invention.

[0030] Figure 5 This is the present invention. Figure 4 Enlarged view of a portion of point A in the middle.

[0031] Figure 6 This is a schematic diagram of the three-dimensional installation structure between the semi-circular ring, the arc-shaped tube, and the aligned connecting tube of the present invention.

[0032] Figure 7 This is a schematic diagram of the three-dimensional installation structure of the fixing component of the present invention.

[0033] Figure 8 This is a schematic diagram of the three-dimensional installation structure between the elastic telescopic rod 2 and the sliding block of the present invention.

[0034] Figure 9 This is a schematic diagram of the three-dimensional installation structure between the horizontal frame and the sliding block of the present invention.

[0035] Figure 10 This is the present invention. Figure 9 Enlarged view of section B in the middle.

[0036] Figure 11 This is a flowchart of the rapid sealing method for underground pipelines according to the present invention.

[0037] Explanation of reference numerals in the attached drawings: 1. Horizontal frame; 2. Alignment mechanism; 21. Moving block; 22. Support rod; 221. Push rod; 222. Support plate; 223. Air inlet; 224. Locking rod; 225. Locking hole; 23. Limiting ring; 231. Semi-circular ring; 232. Fastening bolt; 233. Ball bearing; 24. Alignment component; 241. Arc-shaped tube; 242. Alignment connecting tube; 243. Sealing block; 25. Alignment block; 251. Ball bearing II; 3. Supporting mechanism; 31. Elastic telescopic rod one; 32. Arc plate; 321. Arc connecting plate; 322. Supporting protrusion; 323. Connecting protrusion; 324. Fixing rod; 33. Fixing component; 331. Horizontal plate; 332. Connecting groove; 333. Locking block; 334. Rubber pad; 335. Conical tooth; 336. Linkage rod; 337. Sliding block; 338. Elastic telescopic rod two; 339. Pin; 4. Replacement pipe; 5. Pipeline. Detailed Implementation

[0038] The following is in conjunction with the appendix Figures 1 to 11 This application will be described in further detail.

[0039] This application discloses a device and method for rapid sealing of underground pipelines. The replacement pipe is cut using the same cutting trajectory as the damaged pipe, ensuring that the replacement pipe can be quickly clamped between the pipes.

[0040] Example 1: See Figure 1 A rapid sealing device for underground pipelines includes a horizontal frame 1. The upper end face of the horizontal frame 1 is provided with an alignment mechanism 2 for aligning a replacement pipe 4 with a pipeline 5 and a support mechanism 3 for placing the replacement pipe 4.

[0041] During the sealing process of pipe 5, the supporting mechanism 3 can fix and align the replacement pipe 4 to ensure that the replacement pipe 4 can be quickly snapped into the pipe 5 to be sealed after cutting. While aligning pipe 5 and replacement pipe 4, the alignment mechanism 2 can cooperate with the arc plate 32 to limit the replacement pipe 4, ensuring the stability of the replacement pipe 4 during the replacement sealing process of pipe 5.

[0042] See Figure 2 as well as Figure 3 The alignment mechanism 2 includes a movable block 21 that is located on the left side of the upper end face of the horizontal frame 1 and can slide left and right. The upper end face of the movable block 21 is equipped with a support rod 22 and a limiting ring 23 that can be opened and closed and is used to connect with the pipe 5. Two sets of symmetrical alignment members 24 are provided on the outer circumferential surface of the limiting ring 23. Alignment blocks 25 for aligning the replacement pipe 4 with the pipe 5 are installed on the alignment members 24.

[0043] See Figure 3The limiting ring 23 is composed of two semi-circular rings 231. The lower end of the semi-circular ring 231 is mounted on the upper end face of the support rod 22 by a hinge. The upper end of the semi-circular ring 231 is connected to each other by a fastening bolt 232. The two semi-circular rings 231 and the fastening bolt 232 cooperate with each other to facilitate the quick installation and removal of the limiting ring 23 on the pipe 5.

[0044] See Figure 4 The supporting mechanism 3 includes an elastic telescopic rod 31 fixed to the right end face of the horizontal frame 1. An arc-shaped plate 32 for fixing and limiting the replacement tube 4 is installed on the upper end face of the telescopic end of the elastic telescopic rod 31. The elastic telescopic rod 31 can change the height of the arc-shaped plate 32. A fixing component 33 for fixing the telescopic end of the elastic telescopic rod 31 is installed on both the horizontal frame 1 and the elastic telescopic rod 31. The fixing component 33 and the elastic telescopic rod 31 cooperate with each other to fix and limit the arc-shaped plate 32.

[0045] In the initial position, the center axis of the limiting ring 23 and the center axis of the arc plate 32 are on the same vertical plane. In actual operation, the fastening bolt 232 is removed and the semi-circular ring 231 is opened. At this time, the horizontal frame 1 is lifted and moved to the damaged part of the pipe 5. Then, the arc plate 32 is manually pressed down to move it directly below the pipe 5 to avoid the arc plate 32 colliding with the pipe 5. At this time, the horizontal frame 1 is not fixedly connected to the ground.

[0046] Next, move the semicircular ring 231 to both sides of the pipe 5 so that the inner wall of the semicircular ring 231 contacts the pipe 5. At this time, the two semicircular rings 231 are locked and fixed by the fastening bolts 232. At this time, the limiting ring 23 is coaxial with the pipe 5, and the central axis of the arc plate 32 and the central axis of the pipe 5 are located in the same vertical plane. Thus, the limiting ring 23 and the pipe 5 cooperate to pre-limit the central axis of the arc plate 32, avoiding the cumbersome back-and-forth fine adjustment of the replacement pipe 4 driven by the arc plate 32.

[0047] After the limiting ring 23 has finished limiting, fix the horizontal frame 1 on the ground and place the replacement pipe 4 on the arc plate 32. At this time, the replacement pipe 4 will not collide with the damaged pipe 5.

[0048] At this point, the replacement tube 4 is placed on the arc-shaped plate 32 from right to left. The length of the replacement tube 4 is significantly greater than the length of the damaged section of pipe 5. To further improve the stability of the replacement tube 4 during the replacement and sealing process, please refer to... Figure 5The upper end face of the arc plate 32 of the present invention is snapped with an arc connecting plate 321 corresponding to it. Supporting protrusions 322 are installed on both the front and rear sides of the outer arc plate 32. Connecting protrusions 323 are installed on both the front and rear sides of the outer arc plate 321, which are snapped with the supporting protrusions 322 on the same side. A fixing rod 324 is snapped between the connecting protrusions 323 and the supporting protrusions 322 on the same side.

[0049] In practice, when the replacement tube 4 is placed on the arc plate 32, the arc connecting plate 321 is snapped onto the arc plate 32 and the connecting protrusion 323 is snapped onto the supporting protrusion 322. Then, the connecting protrusion 323 is fixed onto the supporting protrusion 322 by the fixing rod 324. Thus, the arc plate 32 and the arc connecting plate 321 cooperate with each other to fix the replacement tube 4, preventing it from shaking during subsequent cutting and welding.

[0050] The damaged pipe 5 is cut off using the existing cutting blade (not shown in the figure), and then the replacement pipe 4 is cut along the cutting trajectory of the existing cutting blade. At this time, the arc plate 32 is released, and the arc plate 32 is moved upward to move the cut replacement pipe 4 to the pipe 5 to be blocked. This eliminates the need to repeatedly move the replacement pipe 4 left and right to fine-tune it so that it is locked with the pipe 5 to be blocked, thus improving the efficiency of locking the replacement pipe 4 with the pipe 5 to be blocked.

[0051] When replacement pipe 4 is inserted into the section of pipe 5 to be sealed, replacement pipe 4 needs to be aligned with pipe 5. (See [reference needed]). Figure 6 The alignment component 24 of the present invention includes an arc-shaped tube 241 fixed on the outer circumferential surface of a semi-circular ring 231. Multiple U-shaped alignment connecting tubes 242 are uniformly installed on the arc-shaped tube 241 along its length. Gas can push the sealing block 243 by cooperating with the arc-shaped tube 241 and the alignment connecting tube 242. The longer section of the alignment connecting tube 242 is connected to the arc-shaped tube 241 on the same side. The shorter section of the alignment connecting tube 242 is equipped with a sealing block 243 that can automatically reset. The sealing block 243 can drive the alignment block 25 to move along the shorter section of the alignment connecting tube 242. The end of the sealing block 243 away from the corresponding alignment connecting tube 242 is fixedly connected to the alignment block 25.

[0052] In specific operation, the existing cylinder (not shown in the figure) pushes the moving block 21 to the right. During the movement of the moving block 21, the support rod 22 and the limiting ring 23 cooperate to drive the alignment block 25 to move to the vicinity of the replacement pipe 4. At this time, the two arc-shaped pipes 241 are connected to the existing air pump (not shown in the figure). The existing air pump is started to pump gas into the arc-shaped pipe 241. At this time, the pressure inside the arc-shaped pipe 241 increases, and a pressure difference appears on the inner and outer sides of the sealing block 243. The sealing block 243 drives the alignment block 25 to move towards each other. Through the alignment connecting pipe 242, the replacement pipe 4 and the pipe 5 can be aligned on the same axis. At this time, the replacement pipe 4 and the pipe 5 are aligned.

[0053] To ensure the stability of replacement tube 4 during welding, please refer to... Figure 7 The fixing component 33 of the present invention includes a horizontal plate 331 fixed to the elastic telescopic rod 31 and extending to the left and right. A symmetrical connecting groove 332 is provided through the horizontal plate 331. A locking block 333 that slides left and right is limited inside the connecting groove 332. A rubber pad 334 is installed at one end of the locking block 333 near the telescopic section of the elastic telescopic rod 31. Two sets of symmetrical tapered teeth 335 that cooperate with the rubber pad 334 are installed on the upper side of the circumference of the telescopic section of the elastic telescopic rod 31. The rubber pad 334 can lock and limit the telescopic end of the elastic telescopic rod 31 by cooperating with the locking block 333 through the tapered teeth 335. Each set of tapered teeth 335 is evenly distributed from top to bottom. A linkage rod 336 is installed on the front side of the two locking blocks 333, which can drive the two locking blocks 333 to move synchronously.

[0054] See Figure 8 The horizontal frame 1 has a sliding block 337 that can slide left and right on its upper surface and below the left connecting groove 332. The upper surface of the sliding block 337 is equipped with an elastic telescopic rod 338 that cooperates with the left locking block 333. The upper end of the telescopic end of the elastic telescopic rod 338 is fixedly connected to the left locking block 333. The elastic telescopic rod 338 and the sliding block 337 cooperate with each other so that the elastic telescopic rod 338 always moves with the left locking block 333. The left end of the fixed section of the elastic telescopic rod 338 is provided with a pin 339 for limiting the telescopic section of the elastic telescopic rod 338. The pin 339 can limit and lock the telescopic section of the elastic telescopic rod 338.

[0055] In the initial state, the pin 339 is not inserted into the fixed section of the second elastic telescopic rod 338, and the locking blocks 333 on the left and right sides are respectively located on the left side of the corresponding connecting groove 332. In actual operation, after the alignment block 25 aligns the replacement pipe 4 with the pipe 5, the pin 339 is inserted into the fixed end of the second elastic telescopic rod 338. At this time, the arc plate 32 is relatively fixed. By manually pushing the sliding block 337 to the right, the sliding block 337 moves and the second elastic telescopic rod 338 and the left locking block 333 cooperate to drive the corresponding rubber pad 334 to be fixedly connected with the conical tooth 335 on the same side. At this time, the telescopic section of the first elastic telescopic rod 31 is fixed, and the arc plate 32 cooperates with the arc connecting plate 321 to drive the replacement pipe 4 to be fixed at the welding point.

[0056] The replacement pipe 4 is welded to the right side of the right pipe 5 using existing welding equipment. After the welding of the right side of the replacement pipe 4 is completed, the moving block 21 is pushed to the left manually to detach the alignment block 25 from the replacement pipe 4.

[0057] Since the weld between pipe 5 and replacement pipe 4 may not have cooled down in time, in order to ensure the stability of the weld between replacement pipe 4 and pipe 5, the sliding block 337 is manually pushed to the left. During the movement of the sliding block 337, the left locking block 333 is moved to the left through the elastic telescopic rod. During the movement of the left locking block 333, the right locking block 333 is moved to the left through the linkage rod 336. At this time, the left locking block 333 causes the corresponding rubber pad 334 to disengage from the conical tooth 335 on the same side, and the right locking block 333 causes the corresponding rubber pad 334 to be fixedly connected to the conical tooth 335 on the same side. At this time, the telescopic section of the elastic telescopic rod 31 is fixed again. Then, the left side of the replacement pipe 4 is welded to the left side of the pipe 5 using the existing welding equipment.

[0058] After the replacement pipe 4 is welded, remove the fastening bolt 232 and the fixing rod 324. Then, separate the semi-circular ring 231 and the arc-shaped connecting plate 321, release the horizontal frame 1 from the ground, and finally lift the invention out. The underground pipeline quick sealing and replacement work is completed.

[0059] Looking back Figure 2 The inner circumferential surface of the limiting ring 23 is uniformly provided with a plurality of first balls 233, and the side of the alignment block 25 away from the sealing block 243 is uniformly provided with a plurality of second balls 251. The first balls 233 and the second balls 251 cooperate with each other to reduce the damage to the pipe 5 and the replacement pipe 4 by the limiting ring 23 and the alignment block 25 respectively, and play a protective role for the pipe 5 and the replacement pipe 4. At the same time, it reduces the friction between the limiting ring 23 and the pipe 5, and between the alignment block 25 and the replacement pipe 4, and avoids the limiting ring 23 and the alignment block 25 from having rigid impacts with the pipe 5 and the replacement pipe 4 respectively.

[0060] Example 2: Refer to Figure 9 as well as Figure 10 Based on Embodiment 1, in order to reduce the intensity of manual labor, a push rod 221 is installed between the support rod 22 and the sliding block 337. During the movement of the support rod 22, the sliding block 337 is driven to move synchronously through the push rod 221. An L-shaped support plate 222 is provided on the upper end surface of the horizontal frame 1 and located to the right of the support rod 22. The vertical section of the support plate 222 is fixed on the horizontal frame 1, and an air inlet 223 is installed on the horizontal section of the support plate 222. The support plate 222 can support the air inlet 223. A locking connecting rod 224 that can automatically reset is installed at the lower end of the air inlet 223. A locking hole 225 that cooperates with the locking connecting rod 224 is opened on the upper end surface of the moving block 21. The locking connecting rod 224 and the locking hole 225 cooperate with each other to lock and limit the moving block 21.

[0061] In specific operation, when the alignment block 25 moves to the replacement pipe 4 and aligns the replacement pipe 4, the rubber pad 334 on the left side is not in contact with the conical tooth 335 on the same side. After the drive cylinder is started and pushes the moving block 21 to the right a certain distance, the rubber pad 334 on the left side contacts and locks with the conical tooth 335 on the same side. At this time, the limiting ring 23 is still on the pipe 5, and the locking hole 225 just moves to the lower side of the locking link 224. Gas is pumped into the air inlet cylinder 223 through the external air pump. The gas pushes the locking link 224 down and inserts it into the locking hole 225. At this time, the moving block 21 locks and limits. Then, the alignment block 25 cooperates with each other to align the pipe 5 and the replacement pipe 4, and can cooperate with the arc plate 32 to limit the replacement pipe 4, ensuring the stability of the welding between the right side of the replacement pipe 4 and the right side pipe 5.

[0062] After the welding on the right side of the replacement tube 4 is completed, the existing air pump is discontinued, causing the locking linkage 224 to reset. The drive cylinder is then activated to move the moving block 21 a certain distance to the right. At this time, the locking block 333 on the right side drives the corresponding rubber pad 334 to be fixedly connected with the conical tooth 335 on the same side. Repeating the above actions can achieve the stability of the replacement tube 4 when welding on the left and right sides of the replacement tube 4.

[0063] Finally, see Figure 11 The present invention also provides a method for rapid sealing of underground pipelines, including the following steps: S1: Placement: Place the horizontal frame 1 below the pipeline 5 to be sealed, adjust the position of the horizontal frame 1 by cooperating with the two semi-circular rings 231, and then fix the horizontal frame 1 on the ground.

[0064] S2: Clamping and Cutting: After sealing the pipe 5, place the replacement pipe 4 on the arc plate 32, cut the damaged pipe 5 with the existing cutting blade, and then cut both ends of the replacement pipe 4 along its original trajectory with the existing cutting blade.

[0065] S3: Alignment process: The cut replacement pipe 4 can be moved between the cut pipes 5 by moving the arc plate 32.

[0066] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A device for rapid sealing of a pipe of an underground pipe network, comprising a horizontal frame (1), characterised in that: The horizontal frame (1) is provided with an alignment mechanism (2) for aligning the replacement pipe (4) and the pipe (5) on the left and right sides of its upper end face, and a support mechanism (3) for placing the replacement pipe (4), wherein: The alignment mechanism (2) includes a movable block (21) that is located on the left side of the upper end face of the horizontal frame (1) and can slide left and right. The upper end face of the movable block (21) is equipped with a support rod (22) and a limiting ring (23) that can be opened and closed and is used to connect with the pipe (5). Two sets of symmetrical alignment parts (24) are provided on the outer circumferential surface of the limiting ring (23). Alignment blocks (25) for aligning the replacement pipe (4) and the pipe (5) are installed on the alignment parts (24). The supporting mechanism (3) includes an elastic telescopic rod (31) fixed on the right end face of the horizontal frame (1). An arc plate (32) for fixing and limiting the replacement tube (4) is installed on the upper end face of the telescopic end of the elastic telescopic rod (31). A fixing component (33) for fixing the telescopic end of the elastic telescopic rod (31) is installed on both the horizontal frame (1) and the elastic telescopic rod (31). The fixing component (33) includes a horizontal plate (331) fixed to the elastic telescopic rod (31) and extending to the left and right. A symmetrical connecting groove (332) is provided through the horizontal plate (331). A locking block (333) that slides left and right is limited inside the connecting groove (332). A rubber pad (334) is installed at one end of the locking block (333) near the telescopic section of the elastic telescopic rod (31). Two sets of tapered teeth (335) that are symmetrical and cooperate with the rubber pad (334) are installed on the upper side of the circumferential surface of the telescopic section of the elastic telescopic rod (31). Each set of tapered teeth (335) is evenly distributed from top to bottom. A linkage rod (336) is installed on the front side of the two locking blocks (333). The horizontal frame (1) is provided with a sliding block (337) that can slide left and right on the upper end surface and below the left connecting groove (332). The upper end surface of the sliding block (337) is equipped with an elastic telescopic rod (338) that cooperates with the left locking block (333). The upper end of the telescopic end of the elastic telescopic rod (338) is fixedly connected to the left locking block (333). The left end surface of the fixed end of the elastic telescopic rod (338) is provided with a pin (339) for limiting the telescopic section of the elastic telescopic rod (338).

2. The rapid sealing device for underground pipelines according to claim 1, characterized in that: The limiting ring (23) consists of two semi-circular rings (231). The lower end of the semi-circular ring (231) is mounted on the upper end face of the support rod (22) by a hinge, and the upper ends of the semi-circular rings (231) are connected to each other by fastening bolts (232). The alignment component (24) includes an arc-shaped tube (241) fixed on the outer circumferential surface of the semi-circular ring (231). Multiple U-shaped alignment connecting tubes (242) are uniformly installed on the arc-shaped tube (241) along its length direction. The longer section of the alignment connecting tube (242) is connected to the arc-shaped tube (241) on the same side. The shorter section of the alignment connecting tube (242) is equipped with a sealing block (243) that can automatically reset. The end of the sealing block (243) away from the corresponding alignment connecting tube (242) is fixedly connected to the alignment block (25).

3. The rapid sealing device for underground pipelines according to claim 1, characterized in that: The upper end face of the arc plate (32) is fitted with a corresponding arc connecting plate (321). Supporting protrusions (322) are installed on both the front and rear sides of the outer arc plate (32). Connecting protrusions (323) that engage with the supporting protrusions (322) on the same side are installed on both the front and rear sides of the outer arc plate (321). A fixing rod (324) is engaged between the connecting protrusions (323) and the supporting protrusions (322) on the same side.

4. The rapid sealing device for underground pipelines according to claim 1, characterized in that: A push rod (221) is installed between the support rod (22) and the sliding block (337). An L-shaped support plate (222) is provided on the upper surface of the horizontal frame (1) and to the right of the support rod (22). The vertical section of the support plate (222) is fixed on the horizontal frame (1). An air inlet (223) is installed on the horizontal section of the support plate (222). A locking rod (224) that can automatically reset is installed at the lower end of the air inlet (223). A locking hole (225) that cooperates with the locking rod (224) is opened on the upper surface of the moving block (21).

5. The rapid sealing device for underground pipelines according to claim 2, characterized in that: The inner circumferential surface of the limiting ring (23) is uniformly provided with a plurality of first ball bearings (233), and the side of the alignment block (25) away from the sealing block (243) is uniformly provided with a plurality of second ball bearings (251).

6. A method for rapid sealing of underground pipeline networks, comprising the rapid sealing device for underground pipeline networks as described in claim 2, characterized in that, Its usage includes the following steps: S1: Placement: Place the horizontal frame (1) below the pipe (5) to be sealed, adjust the position of the horizontal frame (1) by the cooperation of the two semi-circular rings (231), and then fix the horizontal frame (1) on the ground; S2: Clamping and cutting: After sealing the pipe (5), place the replacement pipe (4) on the arc plate (32), cut the damaged pipe (5) with the existing cutting knife, and then cut both ends of the replacement pipe (4) along its original trajectory with the existing cutting knife. S3: Alignment process: The cut replacement pipe (4) can be moved between the cut pipes (5) by moving the arc plate (32).

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