An underground pipeline point repair device

Abstract

This invention provides an underground pipeline leak repair device, belonging to the field of pipeline repair technology. It includes an arc-shaped sealing plate, a driving component, and a leakage water flow limiting component. The driving component and the leakage water flow limiting component are disposed outside the arc-shaped sealing plate. The driving component drives the arc-shaped sealing plate and the leakage water flow limiting component to move towards the pipeline. When moving, the leakage water flow limiting component acts on the outer wall of the pipeline to restrict the leakage water spraying from the leak point, causing the leakage water to flow evenly outward from the pipeline's outer wall around the leak point. The arc-shaped sealing plate, when moving, adheres to the outer wall of the pipeline to seal the leak point. Compared to existing technologies, this invention can automatically clean up mud and debris near the leak point when repairing leaks in underground pipelines, thereby improving the repair effect.

Description

Technical Field

[0001] This invention belongs to the field of pipeline repair technology, specifically an underground pipeline point repair device. Background Technology

[0002] Underground pipelines are constantly increasing with the rapid development of urban construction. However, as evidenced by pipeline construction and market testing, most urban underground pipelines currently suffer from structural and functional damage, seriously affecting the lives of urban residents. Therefore, research on the repair of underground pipelines is of great significance.

[0003] In existing technologies, the repair of underground pipelines mostly involves using excavation equipment to dig up the soil around the leaking point to expose the pipeline. Then, clamping and sealing devices such as clamps are used to hold the pipeline to the outside of the leak, thereby repairing the leak. However, because underground pipelines are buried underground for a long time, mud and debris easily remain on the pipeline surface. When clamping and sealing devices such as clamps are used to hold the pipeline to the outside of the leak, mud and debris near the leak will fill the space between the clamping and sealing device and the pipeline, thus affecting the contact effect between the clamping and sealing device and the outer wall of the pipeline, and thus affecting the sealing and repair effect of the pipeline leak. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide an underground pipeline repair device.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] An underground pipeline repair device includes an arc-shaped sealing plate, a drive assembly, and a leakage water flow limiting assembly.

[0007] The drive assembly and the leakage water flow limiting assembly are disposed on the outside of the arc-shaped sealing plate.

[0008] The drive assembly is used to move the arc-shaped sealing plate and the leakage water flow limiting assembly toward the pipeline.

[0009] When the leakage water flow limiting component moves, it acts on the outer wall of the pipe to restrict the leakage water spraying out through the leak point, so that the leakage water flows outward evenly from the outer wall of the pipe with the leak point as the center.

[0010] The arc-shaped sealing plate moves to fit against the outer wall of the pipe to seal the leak point.

[0011] As a further improvement of the present invention: the driving assembly includes a driving screw, a central screw block, a connecting horizontal bar, and a connecting vertical bar.

[0012] Both the connecting horizontal bars and the connecting vertical bars are provided in four sets. The four sets of connecting vertical bars are respectively located at the four corner positions of the arc-shaped sealing plate. Each set of connecting vertical bars is fixedly connected to one set of connecting horizontal bars at one end. The ends of the four sets of connecting vertical bars away from the connecting horizontal bars are movably connected to arc-shaped buckle plates, which are distributed opposite to the arc-shaped sealing plate.

[0013] The central screw block is located at the center of the arc-shaped sealing plate on the side away from the arc-shaped buckle plate. The ends of the four sets of connecting horizontal bars away from the connecting vertical bars are fixedly connected to the central screw block. The driving screw passes through the central screw block and is threadedly engaged with the central screw block. One end of the driving screw is rotatably connected to the arc-shaped sealing plate.

[0014] As a further improvement of the present invention: the leakage water flow limiting component includes a flow limiting frame plate.

[0015] The flow-limiting frame plate is disposed on the outside of the arc-shaped sealing plate, and the flow-limiting frame plate and the arc-shaped sealing plate are connected by an elastic transmission component. The flow-limiting frame plate has two sets of arc-shaped surfaces and two sets of flat surfaces on the side facing the arc-shaped buckle plate.

[0016] The two sets of arc-shaped surfaces and the two sets of flat surfaces are distributed opposite to each other, and several drainage outlets are provided on the two sets of arc-shaped surfaces and the two sets of flat surfaces.

[0017] As a further improvement of the present invention: the elastic transmission assembly includes an elastic element and a support plate.

[0018] The support plate is fixedly connected to the inner wall of the frame plate, and one end of the elastic element is connected to the support plate, while the other end is connected to the arc-shaped sealing plate.

[0019] As a further improvement of the present invention: a slider is fixedly provided on the outer wall of the flow-limiting frame plate, and the slider is slidably sleeved on the outside of the connecting vertical rod.

[0020] As a further improvement of the present invention: one end of the arc-shaped buckle plate is detachably connected to two sets of the connecting vertical rods, and the other end is hingedly connected to the other two sets of the connecting vertical rods.

[0021] As a further improvement of the present invention: two sets of first ear plates are fixedly provided at one end of the arc-shaped buckle plate, and a second ear plate is fixedly provided at the end of the two sets of connecting vertical rods away from the corresponding connecting horizontal rods. Bolt holes are provided on the first ear plate and the second ear plate, and the first ear plate and the second ear plate are connected by locking bolts.

[0022] As a further improvement of the present invention: a flexible sealing layer with an annular structure is provided on the inner arc-shaped surface of the arc-shaped sealing plate.

[0023] As a further improvement of the present invention: the inner arc-shaped surface of the arc-shaped sealing plate is provided with a ring-shaped receiving groove, and the flexible sealing layer is encapsulated inside the receiving groove.

[0024] An air injection component is also provided on the inner arc surface of the arc-shaped sealing plate. When the arc-shaped sealing plate moves toward the pipeline, the air injection component is used to inject air into the receiving groove to drive the flexible sealing layer to deform toward the outside of the receiving groove.

[0025] As a further improvement of the present invention: the gas injection assembly includes a gas injection piston, a first gas passage, and a second gas passage.

[0026] The first air passage is opened on the arc-shaped inner wall of the arc-shaped sealing plate, and the second air passage is opened on the inner wall of the arc-shaped sealing plate. One end of the second air passage is connected to the receiving groove, and the other end is connected to the first air passage. One end of the air injection piston extends into the interior of the first air passage, and the other end extends into the inner side of the arc-shaped sealing plate.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] In this embodiment of the invention, when sealing and repairing leaks in underground pipelines is required, the location of the leak can be predetermined. Then, excavation machinery is used to excavate the soil near the leak to expose it. Next, an arc-shaped sealing plate and a leakage flow limiting component are placed at the location of the leak. Subsequently, a drive assembly moves the arc-shaped sealing plate and the leakage flow limiting component towards the pipeline. As the leakage flow limiting component moves, it acts on the outer wall of the pipeline, thereby limiting the leakage water spraying from the leak, ensuring that the leakage water adheres to the outer wall of the pipeline and flows outwards evenly from the leak point. The flowing water can evenly flush away mud and debris near the leak point, automatically cleaning the outer wall of the pipe. Then, a moving arc-shaped sealing plate adheres to the outer wall of the pipe to seal the leak, thus completing the pipe sealing repair. This repair method effectively reduces the amount of mud and debris remaining near the leak point, allowing the arc-shaped sealing plate to adhere as closely as possible to the outer wall of the pipe, thereby improving the repair effect. Compared to existing technologies, this method automatically cleans mud and debris near the leak point when repairing leaks in underground pipes, thus improving the repair effect. Attached Figure Description

[0030] 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.

[0031] Figure 1 A schematic diagram of the structure of an underground pipeline repair device. Figure 1 ;

[0032] Figure 2 A schematic diagram of the structure of an underground pipeline repair device. Figure 2 ;

[0033] Figure 3 This is a schematic diagram of the installation process of an underground pipeline repair device.

[0034] Figure 4 This is a schematic diagram of the arc-shaped sealing plate in an underground pipeline repair device.

[0035] Figure 5 for Figure 1 Enlarged view of region A in the middle;

[0036] Figure 6 for Figure 1 Enlarged view of region B in the middle;

[0037] Figure 7 for Figure 4 Enlarged diagram of region C in the middle;

[0038] In the diagram: 10-arc-shaped sealing plate, 101-accommodating groove, 102-flexible sealing layer, 20-arc-shaped buckle plate, 201-first ear plate, 30-drive assembly, 301-drive screw, 302-center screw block, 303-connecting crossbar, 304-connecting vertical bar, 305-second ear plate, 306-locking bolt, 40-leakage water flow limiting assembly, 401-flow limiting frame plate, 402-slider, 403-drain outlet, 50-elastic transmission assembly, 501-elastic element, 502-support plate, 60-air injection assembly, 601-air injection piston, 602-first air passage, 603-second air passage, 70-pipeline. Detailed Implementation

[0040] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0041] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0042] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] Please see Figure 1 , Figure 2 as well as Figure 3 This embodiment provides an underground pipeline repair device, including an arc-shaped sealing plate 10, a driving component 30, and a leakage water flow limiting component 40. The driving component 30 and the leakage water flow limiting component 40 are disposed outside the arc-shaped sealing plate 10. The driving component 30 is used to drive the arc-shaped sealing plate 10 and the leakage water flow limiting component 40 to move towards the pipeline 70. When the leakage water flow limiting component 40 moves, it acts on the outer wall of the pipeline 70 to limit the leakage water sprayed from the leakage point of the pipeline 70, so that the leakage water flows outward uniformly from the outer wall of the pipeline 70 with the leakage point as the center. When the arc-shaped sealing plate 10 moves, it adheres to the outer wall of the pipeline 70 to seal the leakage point of the pipeline 70.

[0045] When sealing and repairing leaks in underground pipelines is required, the location of the leak in pipeline 70 can be determined in advance. Then, excavation machinery is used to dig around the soil near the leak to expose it. The arc-shaped sealing plate 10 and the leakage water flow limiting component 40 are then placed at the location of the leak. Subsequently, the drive component 30 moves the arc-shaped sealing plate 10 and the leakage water flow limiting component 40 towards the pipeline 70. As the leakage water flow limiting component 40 moves, it acts on the outer wall of the pipeline 70, thereby limiting the leakage water ejected through the leak. The leaking water flows evenly outward from the leak point of the pipe 70, adhering to the outer wall of the pipe 70. At this time, the leaking water can evenly flush away the mud and debris near the leak point of the pipe 70, thereby achieving automatic cleaning of the outer wall of the pipe 70. Subsequently, the moving arc-shaped sealing plate 10 adheres to the outer wall of the pipe 70 to seal the leak point, thereby completing the sealing and repair of the pipe 70. Through this repair method, the amount of mud and debris remaining near the leak point of the pipe 70 can be effectively reduced, allowing the arc-shaped sealing plate 10 to adhere to the outer wall of the pipe 70 as much as possible, thereby improving the repair effect of the pipe 70.

[0046] Please see Figure 1 , Figure 2 as well as Figure 3 In one embodiment, the driving assembly 30 includes a driving screw 301, a central screw block 302, a connecting horizontal bar 303, and a connecting vertical bar 304. The connecting horizontal bar 303 and the connecting vertical bar 304 are each provided in four sets. The four sets of connecting vertical bars 304 are respectively located at the four corner positions of the arc-shaped sealing plate 10. Each set of connecting vertical bars 304 has one end fixedly connected to a set of connecting horizontal bars 303, and the ends of the four sets of connecting vertical bars 304 away from the connecting horizontal bars 303 are movably connected to... An arc-shaped buckle plate 20 is distributed opposite to the arc-shaped sealing plate 10. A central screw block 302 is located at the center of the side of the arc-shaped sealing plate 10 away from the arc-shaped buckle plate 20. One end of the four sets of connecting horizontal bars 303 away from the connecting vertical bars 304 is fixedly connected to the central screw block 302. A driving screw 301 passes through the central screw block 302 and is threadedly engaged with the central screw block 302. One end of the driving screw 301 is rotatably connected to the arc-shaped sealing plate 10.

[0047] Initially, the arc-shaped buckle plate 20 is in an open state at the ends of the four sets of connecting vertical rods 304. After the leak point of the pipe 70 is exposed, the workers place the four sets of connecting vertical rods 304 on the outside of the pipe 70, so that two sets of connecting vertical rods 304 are on one side of the pipe 70, and the other two sets of connecting vertical rods 304 are on the other side of the pipe 70 (e.g., Figure 3As shown in the figure, the arc-shaped buckle plate 20 is then installed at the ends of the four sets of connecting vertical rods 304, so that the arc-shaped buckle plate 20 is fastened to the outer wall of the pipe 70. At this time, the arc-shaped sealing plate 10 and the arc-shaped buckle plate 20 are distributed opposite to each other on the outside of the pipe 70. Then, the drive screw 301 is rotated. When the drive screw 301 rotates, it moves relative to the center screw block 302 through the threaded engagement with the center screw block 302. When the drive screw 301 moves, it drives the arc-shaped sealing plate 10 to move towards the pipe 70. When the leakage water flow limiting component 40 restricts the leakage water so that the leakage water flows outward evenly from the leak point of the pipe 70 to the outer wall of the pipe 70, the arc-shaped sealing plate 10 is attached to the outer wall of the pipe 70, thereby sealing the leak point of the pipe 70.

[0048] Please see Figure 1 , Figure 2 as well as Figure 3 In one embodiment, the leakage water flow limiting component 40 includes a flow limiting frame plate 401, which is disposed on the outside of the arc-shaped sealing plate 10. The flow limiting frame plate 401 and the arc-shaped sealing plate 10 are connected by an elastic transmission component 50. The flow limiting frame plate 401 has two sets of arc-shaped surfaces and two sets of flat surfaces on the side facing the arc-shaped buckle plate 20. The two sets of arc-shaped surfaces and the two sets of flat surfaces are distributed opposite to each other. A plurality of drain outlets 403 are opened on each of the two sets of arc-shaped surfaces and the two sets of flat surfaces.

[0049] When the drive screw 301 rotates, thereby moving the arc-shaped sealing plate 10 toward the pipe 70, the arc-shaped sealing plate 10 drives the flow-limiting frame plate 401 to synchronously approach the pipe 70 via the elastic transmission component 50. When the flow-limiting frame plate 401 acts on the outer wall of the pipe 70 towards the arc-shaped buckle plate 20, two sets of straight surfaces are distributed along the length of the pipe 70 and are in contact with the outer wall of the pipe 70, and two sets of arc-shaped surfaces are distributed along the circumference of the pipe 70 and are in contact with the outer wall of the pipe 70. At this time, the flow passes through the pipe... The leaking water from the leak point 70 acts on the space formed between the arc-shaped sealing plate 10, the flow-limiting frame plate 401, and the pipe 70, and then is discharged through several drain outlets 403 on the arc-shaped surface and the flat surface, thereby flushing the outer wall of the pipe 70 around the leak point and cleaning the mud and debris on the outer wall of the pipe 70. After the mud and debris are cleaned, as the arc-shaped sealing plate 10 continues to move, the arc-shaped sealing plate 10 covers the outer wall of the pipe 70, thereby sealing the leak point.

[0050] Please see Figure 5In one embodiment, the elastic transmission assembly 50 includes an elastic element 501 and a support plate 502. The support plate 502 is fixedly connected to the inner wall of the frame plate 10. One end of the elastic element 501 is connected to the support plate 501, and the other end is connected to the arc-shaped sealing plate 10.

[0051] When the drive screw 301 rotates, the threaded engagement between the drive screw 301 and the central screw block 302 drives the arc-shaped sealing plate 10 to move toward the pipe 70. When the arc-shaped sealing plate 10 moves, the elastic element 501 pulls the support plate 502, thereby driving the flow-limiting frame plate 401 to move synchronously. When the flow-limiting frame plate 401 acts on the outer wall of the pipe 70 on the side facing the arc-shaped buckle plate 20, the flow-limiting frame plate 401 stops moving. After that, the arc-shaped sealing plate 10 continues to move, and the elastic element 501 is stretched.

[0052] In one embodiment, the elastic element 501 can be a spring or a metal sheet, and there is no limitation on this.

[0053] Please see Figure 1 as well as Figure 2 In one embodiment, a slider 402 is fixedly provided on the outer wall of the flow-limiting frame plate 401, and the slider 402 is slidably sleeved on the outside of the connecting vertical rod 304.

[0054] Through the sliding engagement between the slider 402 and the guide rod 304, when the arc-shaped sealing plate 10 moves toward the pipe 70, the arc-shaped sealing plate 10 can smoothly drive the flow-limiting frame plate 401 to move synchronously through the elastic element 501.

[0055] Please see Figure 1 In one embodiment, one end of the arc-shaped buckle plate 20 is detachably connected to two sets of the connecting vertical rods 304, and the other end is hingedly connected to two other sets of the connecting vertical rods 304.

[0056] Initially, one end of the arc-shaped buckle plate 20 is separated from two sets of connecting vertical rods 304. After the worker places the four sets of connecting vertical rods 304 on the outside of the pipe 70, the arc-shaped buckle plate 20 can be rotated to connect one end of the arc-shaped buckle plate 20 to two sets of connecting vertical rods 304. Then, the drive screw 301 is rotated, which in turn drives the arc-shaped sealing plate 10 and the flow-limiting frame plate 401 to move towards the pipe 70. During this process, the arc-shaped buckle plate 20 is fastened to the outer wall of the pipe 70. When the arc-shaped sealing plate 10 acts on the outer wall of the pipe 70, the arc-shaped sealing plate 10 and the arc-shaped buckle plate 20 are respectively clamped in the relative positions of the outer wall of the pipe 70, thereby achieving the sealing and repair of the leak point of the pipe 70.

[0057] Please see Figure 6In one embodiment, one end of the arc-shaped buckle plate 20 is fixedly provided with two sets of first ear plates 201, wherein the ends of the two sets of connecting vertical rods 304 away from the corresponding connecting horizontal rods 303 are fixedly provided with second ear plates 305. The first ear plates 201 and the second ear plates 305 are provided with bolt holes, and the first ear plates 201 and the second ear plates 305 are connected by locking bolts 306.

[0058] After the workers place the four sets of connecting vertical rods 304 on the outside of the pipe 70, the arc-shaped buckle plate 20 can be rotated so that the first ear plate 201 at one end of the arc-shaped buckle plate 20 moves to the side of the second ear plate 305. At this time, the bolt holes on the first ear plate 201 and the bolt holes on the second ear plate 305 are aligned with each other. Then, the locking bolt 306 passes through the aligned bolt holes and is locked with the nut, thereby completing the installation and fixing of the arc-shaped buckle plate 20. After the arc-shaped buckle plate 20 is installed, it is distributed opposite to the arc-shaped sealing plate 10, and the arc-shaped buckle plate 20 and the arc-shaped sealing plate 10 are located on opposite sides of the outside of the pipe 70.

[0059] Please see Figure 2 as well as Figure 4 In one embodiment, a flexible sealing layer 102 with an annular structure is provided on the inner arc surface of the arc-shaped sealing plate 10. When the arc-shaped sealing plate 10 acts on the outer wall of the pipe 70 to seal the leakage point, the flexible sealing layer 102 is pressed against the outer wall of the pipe 70. At this time, the leakage point on the pipe 70 is located inside the flexible sealing layer 102, and the leakage point can be further sealed by the flexible sealing layer 102.

[0060] When the flow-limiting frame plate 401 acts on the outer wall of the pipe 70 towards the arc-shaped buckle plate 20, the leaking water sprayed from the leak point is confined within the space formed between the arc-shaped sealing plate 10, the flow-limiting frame plate 401, and the pipe 70, and discharged from several drain outlets 403 on the arc-shaped and flat surfaces. Therefore, the leaking water easily carries mud and sand debris to impact the flexible sealing layer 102, which can easily damage the flexible sealing layer 102. To avoid this phenomenon, please refer to... Figure 7In one embodiment, the inner arc-shaped sealing plate 10 has an annular receiving groove 101. The flexible sealing layer 102 is encapsulated inside the receiving groove 101. When leaked water carrying mud and sand is discharged from the drain outlet 403, the mud and sand cannot impact the flexible sealing layer 102 located in the receiving groove 101, thereby achieving the protection of the flexible sealing layer 102. The inner arc-shaped sealing plate 10 is also provided with an air injection component 60. When the arc-shaped sealing plate 10 moves toward the pipe 70, the air injection component 60 is used to inject air into the receiving groove 101, thereby driving the flexible sealing layer 102 to deform toward the outside of the receiving groove 101, thereby acting on the outer wall of the pipe 70 and achieving further sealing of the leakage point of the pipe 70.

[0061] Please see Figure 7 In one embodiment, the gas injection assembly 60 includes a gas injection piston 601, a first gas passage 602, and a second gas passage 603. The first gas passage 602 is formed on the arc-shaped inner wall of the arc-shaped sealing plate 10, and the second gas passage 603 is formed on the inner wall of the arc-shaped sealing plate 10. One end of the second gas passage 603 is connected to the receiving groove 101, and the other end is connected to the first gas passage 602. One end of the gas injection piston 601 extends into the interior of the first gas passage 602, and the other end extends into the inner side of the arc-shaped sealing plate 10.

[0062] When the arc-shaped sealing plate 10 moves to a predetermined position in the direction of the pipe 70, the air injection piston 601 acts on the outer wall of the pipe 70. The pipe 70 pushes the air injection piston 601, causing the air injection piston 601 to move into the first air passage 602. This then forces the air inside the first air passage 602 to be pumped into the receiving groove 101 through the second air passage 603. This, in turn, causes the flexible sealing layer 102 to deform outward from the receiving groove 101. When the arc-shaped sealing plate 10 acts on the outer wall of the pipe 70, the deformed flexible sealing layer 102 simultaneously acts on the outer wall of the pipe 70, achieving a double seal at the leakage point of the pipe 70.

[0063] In one embodiment, the flexible sealing layer 102 may be a rubber layer or a silicone layer, and there is no limitation on this.

[0064] The working principle of this invention is as follows:

[0065] First, excavation is carried out on the soil near the underground pipeline based on the location of the leak to expose the leaking part. Then, four sets of connecting vertical rods 304 are placed outside the pipeline 70, so that the axial direction of the arc-shaped sealing plate 10 is consistent with the axial direction of the pipeline 70. Subsequently, the arc-shaped buckle plate 20 is rotated and fixed by means of locking bolts 306, first ear plate 201, second ear plate 305 and nuts. After the arc-shaped buckle plate 20 is fixed, it is located outside the pipeline 70 and is relatively distributed with the arc-shaped sealing plate 10. Then, the drive screw 301 is rotated. When the drive screw 301 rotates, it moves relative to the central screw block 302 through the threaded engagement with the central screw block 302, thereby pushing the arc-shaped sealing plate 10 to move towards the pipeline 70. When the arc-shaped sealing plate 10 moves, the flow-limiting frame plate 401 is pulled synchronously towards the pipeline 70 by the elastic element 501 and the support plate 502. When the flow-limiting frame plate 401 acts on the outer wall of the pipe 70, the two sets of straight surfaces at one end of the flow-limiting frame plate 401 are attached to the outer wall of the pipe 70 and distributed along the length of the pipe 70, while the two sets of arc-shaped surfaces at one end of the flow-limiting frame plate 401 are attached to the outer wall of the pipe 70 and distributed along the circumference of the pipe 70. At this time, the leaking water sprayed from the leak point of the pipe 70 is confined within the space formed by the arc-shaped sealing plate 10, the flow-limiting frame plate 401, and the pipe 70. The leaking water in this space is then discharged from the drain outlets 403 on the straight and arc-shaped surfaces, thereby flushing the mud and sand debris around the leak point on the outer wall of the pipe 70, achieving automatic cleaning of the mud and sand debris. After the mud and sand debris around the leak point of the pipe 70 has been flushed for a certain period of time, as the arc-shaped sealing plate 10 continues to move, the arc-shaped sealing plate 10 acts on the outer wall of the pipe 70 to seal the leak point, thereby completing the leak repair of the pipe 70.

[0066] In this embodiment of the invention, when sealing and repairing a leak in an underground pipeline is required, the location of the leak in the pipeline 70 can be predetermined. Then, excavation machinery is used to excavate the soil near the leak in the pipeline 70 to expose the leak. Next, the arc-shaped sealing plate 10 and the leakage water flow limiting component 40 are placed at the location of the leak in the pipeline 70. Subsequently, the drive component 30 moves the arc-shaped sealing plate 10 and the leakage water flow limiting component 40 toward the pipeline 70. As the leakage water flow limiting component 40 moves, it acts on the outer wall of the pipeline 70, thereby limiting the leakage water ejected through the leak in the pipeline 70, causing the leakage water to adhere to the outer wall of the pipeline 70 with the leak in the pipeline 70 as the center. The leaking water flows outwards evenly, thus uniformly flushing away mud and debris near the leak point of the pipe 70, automatically cleaning the outer wall of the pipe 70. Subsequently, the moving arc-shaped sealing plate 10 adheres to the outer wall of the pipe 70 to seal the leak point, completing the sealing repair of the pipe 70. This repair method effectively reduces the amount of mud and debris remaining near the leak point of the pipe 70, allowing the arc-shaped sealing plate 10 to adhere as closely as possible to the outer wall of the pipe 70, thereby improving the repair effect of the pipe 70. Compared to existing technologies, when repairing leaks in underground pipes, this method automatically cleans mud and debris near the leak point of the pipe 70, thus improving the repair effect of the pipe 70.

[0067] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0068] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity, and those skilled in the art should consider the specification as a whole.

Claims

1. A device for repairing underground pipelines, characterized in that, It includes an arc-shaped sealing plate (10), a drive assembly (30), and a leakage water flow limiting assembly (40). The drive assembly (30) and the leakage water flow limiting assembly (40) are disposed on the outside of the arc-shaped sealing plate (10). The drive assembly (30) is used to drive the arc-shaped sealing plate (10) and the leakage water flow limiting assembly (40) to move towards the pipeline (70). When the leakage water flow limiting component (40) moves, it acts on the outer wall of the pipe (70) to limit the leakage water sprayed from the leakage point of the pipe (70), so that the leakage water flows outward uniformly from the outer wall of the pipe (70) with the leakage point as the center. When the arc-shaped sealing plate (10) moves, it fits against the outer wall of the pipe (70) to seal the leak point of the pipe (70).

2. The underground pipeline repair equipment according to claim 1, characterized in that, The drive assembly (30) includes a drive screw (301), a central screw block (302), a connecting crossbar (303), and a connecting vertical bar (304). Both the connecting horizontal bar (303) and the connecting vertical bar (304) are provided in four sets. The four sets of connecting vertical bars (304) are respectively set at the four corner positions of the arc-shaped sealing plate (10). One end of each set of connecting vertical bars (304) is fixedly connected to a set of connecting horizontal bars (303). The ends of the four sets of connecting vertical bars (304) away from the connecting horizontal bars (303) are movably connected to arc-shaped buckle plates (20). The arc-shaped buckle plates (20) are distributed opposite to the arc-shaped sealing plate (10). The central screw block (302) is located at the center of the arc-shaped sealing plate (10) away from the arc-shaped buckle plate (20). The ends of the four sets of connecting horizontal bars (303) away from the connecting vertical bars (304) are fixedly connected to the central screw block (302). The driving screw (301) passes through the central screw block (302) and is threadedly engaged with the central screw block (302). One end of the driving screw (301) is rotatably connected to the arc-shaped sealing plate (10).

3. The underground pipeline point repair equipment according to claim 2, characterized in that, The leakage water flow limiting component (40) includes a flow limiting frame plate (401). The flow-limiting frame plate (401) is disposed on the outside of the arc-shaped sealing plate (10). The flow-limiting frame plate (401) and the arc-shaped sealing plate (10) are connected by an elastic transmission assembly (50). The flow-limiting frame plate (401) has two sets of arc-shaped surfaces and two sets of flat surfaces on the side facing the arc-shaped buckle plate (20). The two sets of arc-shaped surfaces and the two sets of straight surfaces are distributed relative to each other, and a number of drainage outlets (403) are provided on the two sets of arc-shaped surfaces and the two sets of straight surfaces.

4. The underground pipeline point repair equipment according to claim 3, characterized in that, The elastic transmission assembly (50) includes an elastic element (501) and a support plate (502). The support plate (502) is fixedly connected to the inner wall of the frame plate (10), and one end of the elastic element (501) is connected to the support plate (501), and the other end is connected to the arc-shaped sealing plate (10).

5. The underground pipeline point repair equipment according to claim 3, characterized in that, A slider (402) is fixedly installed on the outer wall of the flow-limiting frame plate (401), and the slider (402) is slidably sleeved on the outside of the connecting vertical rod (304).

6. The underground pipeline repair equipment according to claim 2, characterized in that, One end of the arc-shaped buckle plate (20) is detachably connected to two sets of the connecting vertical rods (304), and the other end is hinged to the other two sets of the connecting vertical rods (304).

7. The underground pipeline repair equipment according to claim 6, characterized in that, Two sets of first ear plates (201) are fixedly provided at one end of the arc-shaped buckle plate (20), and a second ear plate (305) is fixedly provided at the end of the two sets of connecting vertical rods (304) away from the corresponding connecting horizontal rods (303). Bolt holes are provided on the first ear plate (201) and the second ear plate (305), and the first ear plate (201) and the second ear plate (305) are connected by locking bolts (306).

8. The underground pipeline point repair equipment according to claim 1, characterized in that, The inner arc-shaped sealing plate (10) is provided with a flexible sealing layer (102) in an annular structure.

9. The underground pipeline point repair equipment according to claim 8, characterized in that, The inner arc-shaped surface of the arc-shaped sealing plate (10) is provided with a ring-shaped receiving groove (101), and the flexible sealing layer (102) is encapsulated inside the receiving groove (101). An air injection component (60) is also provided on the inner arc surface of the arc-shaped sealing plate (10). When the arc-shaped sealing plate (10) moves toward the pipe (70), the air injection component (60) is used to inject air into the receiving groove (101) to drive the flexible sealing layer (102) to deform toward the outside of the receiving groove (101).

10. The underground pipeline point repair equipment according to claim 9, characterized in that, The gas injection assembly (60) includes a gas injection piston (601), a first gas passage (602), and a second gas passage (603). The first air passage (602) is opened on the arc-shaped inner wall of the arc-shaped sealing plate (10), and the second air passage (603) is opened on the inner wall of the arc-shaped sealing plate (10). One end of the second air passage (603) is connected to the receiving groove (101), and the other end is connected to the first air passage (602). One end of the air injection piston (601) extends into the interior of the first air passage (602), and the other end extends into the inner side of the arc-shaped sealing plate (10).

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