Large-diameter pipeline under-pressure repairing structure

Abstract

The invention provides a large-diameter pipeline under-pressure repairing structure, and belongs to the technical field of pipeline repairing, the large-diameter pipeline under-pressure repairing structure comprises a cylindrical sealing cylinder, an inflatable cleaning assembly, an air supply assembly and a shunting air supply assembly, through holes allowing a pipeline to penetrate through are formed in the two opposite ends of the cylindrical sealing cylinder, the inflatable cleaning assembly is arranged in the through holes, and the air supply assembly is arranged in the cylindrical sealing cylinder. The air supply assembly is installed on the side wall of the cylindrical sealing barrel, one end of the flow dividing air supply assembly is connected with the air outlet end of the air supply assembly, the other end of the flow dividing air supply assembly is connected with the inflatable cleaning assembly, and the air supply assembly is used for supplying air into the flow dividing air supply assembly. Compared with the prior art, when leaking stoppage and repair are conducted on the broken part of the pipeline, dust and sundries on the area, used for sealing, of the outer surface of the pipeline can be cleaned, so that the situation that the subsequent sealing effect is affected by the existence of the dust and sundries is avoided, and the pipeline leaking stoppage and repair effect is good.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline repair, and in particular is a large-diameter pipeline pressure repair structure. Background Art

[0002] A pipeline is a device connected by pipes, pipe connectors and valves for conveying gas, liquid or fluid with solid particles. Usually, the fluid is pressurized by blowers, compressors, pumps and boilers, and then flows from the high-pressure part of the pipeline to the low-pressure part. The fluid can also be transported by its own pressure or gravity. Pipelines are widely used, mainly in water supply, drainage, heating, agricultural irrigation, hydraulic engineering and various industrial installations.

[0003] At present, pipelines often encounter accidents during use, resulting in damage. When a pipeline is damaged, the water flowing inside it will burst out from the damaged part under high pressure. In order to avoid wasting water resources, it is necessary to promptly plug and repair the damaged part of the pipeline. In the prior art, plugging and repairing the damaged part of the pipeline is mostly achieved by gluing waterproof pads or installing clamps. The gluing of the former waterproof pads requires glue and hot pressing processes. When the water pressure inside the pipeline is high, the water flow pressure bursting out from the damaged part of the pipeline is high, which makes it difficult for the waterproof pad to pass through the glue quickly. The latter is used to seal the damaged part of the pipeline with a clamp, and the clamp is directly pressed on the damaged part with the help of the locking effect of the bolt and nut assembly. On the one hand, dust and debris are easily adhered to the outer wall of the pipeline after long-term use, and the presence of dust and debris will have an adverse effect on the close contact between the clamp and the pipeline, resulting in the difficulty in effectively sealing the damaged part of the pipeline. On the other hand, some damaged parts of the pipeline will bulge outwards, which is also not conducive to the close contact between the clamp and the pipeline, making it difficult to effectively seal the damaged part of the pipeline. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a large-diameter pipeline pressure repair structure.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A large-diameter pipeline pressure repair structure includes a cylindrical sealing cylinder, an inflatable cleaning component, an air supply component and a split air supply component.

[0007] The cylindrical sealing cylinder has through holes at opposite ends thereof through which the pipeline can pass, and the inflatable cleaning component is arranged inside the through holes.

[0008] The air supply assembly is mounted on the side wall of the cylindrical sealing cylinder.

[0009] One end of the shunt air supply component is connected to the air outlet end of the air supply component, and the other end is connected to the inflatable cleaning component.

[0010] The air supply component is used to supply air into the shunt air supply component. The air enters the inflatable cleaning component through the shunt air supply component and drives the inflatable cleaning component to expand, so as to realize the seal between the cylindrical sealing cylinder and the pipeline.

[0011] As a further improvement of the present invention: the cylindrical sealing cylinder includes two groups of semi-circular plates.

[0012] Extension side plates are fixedly arranged on the outer sides of the two groups of semi-circular plates. Semi-circular holes are formed at both opposite ends of the two groups of semi-circular plates. Semi-circular support plates are fixedly arranged inside the semi-circular holes at both opposite ends of the two groups of semi-circular plates.

[0013] The inflatable cleaning component is arranged on the inner wall of the semi-circular support plate. Bolting holes corresponding to each other are formed on the extension side plates on the outer sides of the two groups of semi-circular plates.

[0014] As a further improvement of the present invention: a sealing gasket is further arranged on one side of the extension side plate. After the two extension side plates are locked by the bolt and nut assembly, the sealing gasket seals the gap between the two extension side plates.

[0015] As a further improvement of the present invention: the air supply component includes a threaded rod, an air storage cylinder, a threaded column cylinder and a piston block.

[0016] There are two groups of the air storage cylinders, and the two groups of air storage cylinders are respectively fixedly arranged on the side walls of the two groups of semi-circular plates. There are two groups of the piston blocks, and the two groups of piston blocks are respectively movably arranged inside the two groups of air storage cylinders. A group of threaded column cylinders are fixedly arranged on one side of each of the two groups of piston blocks. Threaded rods are in threaded fit with the inner parts of the two groups of threaded column cylinders far away from the piston blocks. The ends of the threaded rods far away from the corresponding threaded column cylinders extend outside the air storage cylinders.

[0017] There are two groups of the shunt air supply components. One group of the shunt air supply components is used to connect one of the air storage cylinders with the inflatable cleaning components inside two of the semi-circular support plates, and the other group of the shunt air supply components is used to connect the other air storage cylinder with the inflatable cleaning components inside the other two semi-circular support plates.

[0018] As a further improvement of the present invention: handles are arranged at the ends of the two groups of threaded rods located outside the corresponding air storage cylinders.

[0019] As a further improvement of the present invention: a guiding strip is fixedly arranged along the length direction on the inner wall of the air storage cylinder, and a clamping groove adapted to the guiding strip is formed on the side wall of the piston block.

[0020] As a further improvement of the present invention: the inflatable cleaning assembly includes a plurality of strip-shaped air bags, and the plurality of strip-shaped air bags are spaced apart and distributed on the inner wall of the semi-circular support plate.

[0021] The shunt air supply assembly includes air supply branch pipes, a first air supply main pipe and a second air supply main pipe.

[0022] The first air supply main pipe is arranged outside the semi-circular support plate, and a plurality of groups of the air supply branch pipes are provided corresponding to the strip-shaped air bags one by one. One ends of the plurality of air supply branch pipes are communicated with the first air supply main pipe, and the other ends respectively pass through the semi-circular support plate and are communicated with the corresponding strip-shaped air bags. The air delivery pipe is installed at the bottom of the air storage cylinder, one end of the second air supply main pipe is communicated with the air delivery pipe, and the other end is communicated with the first air supply main pipe.

[0023] As a further improvement of the present invention: the first air supply main pipe is arranged in an arc structure outside the semi-circular plate.

[0024] As a further improvement of the present invention: the plurality of strip-shaped air bags are arranged at intervals along the length direction of the semi-circular plate on the inner wall of the semi-circular plate.

[0025] As a further improvement of the present invention: the plurality of strip-shaped air bags are arranged at intervals in a spiral shape on the inner wall of the semi-circular plate.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] In the embodiment of the present invention, when it is necessary to plug and repair a ruptured pipeline, a cylindrical sealing cylinder can be sleeved outside the pipeline, and the ruptured part of the pipeline is located inside the cylindrical sealing cylinder. The water flow ejected through the ruptured part of the pipeline can quickly enter the internal area of the cylindrical sealing cylinder, and then the water flow flows out through the gaps between the through holes at both ends of the cylindrical sealing cylinder and the pipeline. At this time, the staff can rotate the cylindrical sealing cylinder around the pipeline, and the cylindrical sealing cylinder drives the inflatable cleaning component to rotate synchronously. During the rotation of the inflatable cleaning component, the area of the outer wall of the pipeline covered by the inflatable cleaning component can be wiped, and in cooperation with the outward flowing water flow, the area of the outer wall of the pipeline covered by the inflatable cleaning component can be cleaned to prevent dust and sundries from remaining on the outer surface of the pipeline. After the outer wall of the pipeline is cleaned, air can be supplied into the shunt air supply component by using the air supply component, and the air is sent into the inflatable cleaning component through the shunt air supply component, so that the inflatable cleaning component expands. The expanded inflatable cleaning component tightens the gap between the cylindrical sealing cylinder and the pipeline, thereby realizing the sealing between the cylindrical sealing cylinder and the pipeline. After the sealing between the cylindrical sealing cylinder and the pipeline is completed, the water source flowing through the pipeline inside can no longer seep out from the ruptured part, thus completing the pressure-bearing plugging and repair operation of the pipeline; when the above-mentioned inflatable cleaning component expands to seal the cylindrical sealing cylinder and the pipeline, since the inflatable cleaning component has cleaned the dust and sundries on the outer wall of the pipeline during the previous rotation process, the inflatable cleaning component can be in close contact with the outer wall of the pipeline without being affected by dust and sundries when it expands, thereby improving the sealing effect between the cylindrical sealing cylinder and the pipeline, and further improving the plugging and repair effect of the pipeline. Compared with the prior art, when plugging and repairing the ruptured part of the pipeline, the dust and sundries on the area of the outer surface of the pipeline used for sealing can be cleaned, so as to avoid the influence of the existence of dust and sundries on the subsequent sealing effect, and has the advantage of good pipeline plugging and repair effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of a pressure-bearing repair structure for a large-diameter pipeline Figure 1 ;

[0029] Figure 2 is a schematic structural diagram of a pressure-bearing repair structure for a large-diameter pipeline Figure 2 ;

[0030] Figure 3 is a schematic structural diagram of a semi-cylindrical shell in a pressure-bearing repair structure for a large-diameter pipeline Figure 1 ;

[0031] Figure 4 is a schematic structural diagram of a semi-cylindrical shell in a pressure-bearing repair structure for a large-diameter pipeline Figure 2 ;

[0032] Figure 5 is Figure 1Schematic enlarged view of area A in

[0033] Figure 6 is Figure 1 Schematic enlarged view of area B in

[0034] Figure 7 is Figure 4 Schematic enlarged view of area C in

[0035] In the figure: 10 - cylindrical sealing cylinder, 101 - semi-circular shell, 102 - semi-circular support plate, 103 - extending side plate, 1031 - bolt hole, 104 - bolt and nut assembly, 105 - gasket, 20 - inflatable cleaning assembly, 30 - air supply assembly, 301 - handle, 302 - threaded rod, 303 - air storage cylinder, 304 - threaded column cylinder, 305 - piston block, 306 - guide bar, 40 - shunt air supply assembly, 401 - air supply branch pipe, 402 - first air supply main pipe, 403 - second air supply main pipe, 404 - gas pipeline, 50 - pipe. Detailed implementation manners

[0036] The technical solutions of the present invention will be further described in detail below in conjunction with the specific implementation manners.

[0037] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which 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 by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Please refer to Figure 1 and Figure 2, this embodiment provides a pressure repair structure for large-diameter pipelines, including a cylindrical sealing cylinder 10, an inflatable cleaning component 20, a gas supply component 30, and a shunt air supply component 40. Through holes for the pipeline 50 to pass through are provided at opposite ends of the cylindrical sealing cylinder 10. The inflatable cleaning component 20 is arranged inside the through holes. The gas supply component 30 is installed on the side wall of the cylindrical sealing cylinder 10. One end of the shunt air supply component 40 is connected to the air outlet end of the gas supply component 30, and the other end is connected to the inflatable cleaning component 20. The gas supply component 30 is used to supply air into the shunt air supply component 40. The air enters the inflatable cleaning component 20 through the shunt air supply component 40 and drives the inflatable cleaning component 20 to expand, so as to achieve the seal between the cylindrical sealing cylinder 10 and the pipeline 50.

[0041] When it is necessary to plug and repair a ruptured pipeline 50, the cylindrical sealing cylinder 10 can be sleeved outside the pipeline 50, and the ruptured part of the pipeline 50 is located inside the cylindrical sealing cylinder 10. The water flow ejected through the ruptured part of the pipeline 50 can quickly enter the internal area of the cylindrical sealing cylinder 10, and then the water flow flows out through the gaps between the through holes at both ends of the cylindrical sealing cylinder 10 and the pipeline 50. At this time, the staff can rotate the cylindrical sealing cylinder 10 around the pipeline 50, and the cylindrical sealing cylinder 10 drives the inflatable cleaning component 20 to rotate synchronously. During the rotation of the inflatable cleaning component 20, the area of the outer wall of the pipeline 50 covered by the inflatable cleaning component 20 can be wiped, and combined with the outward flowing water flow, so as to clean the area of the outer wall of the pipeline 50 covered by the inflatable cleaning component 20, in order to prevent dust and debris from remaining on the outer surface of the pipeline 50. After the outer wall of the pipeline 50 is cleaned, the gas supply component 30 can be used to supply air into the shunt air supply component 40, and the air is sent into the inflatable cleaning component 20 through the shunt air supply component 40, so that the inflatable cleaning component 20 expands. The expanded inflatable cleaning component 20 tightens the gap between the cylindrical sealing cylinder 10 and the pipeline 50, thus realizing the seal between the cylindrical sealing cylinder 10 and the pipeline 50. After the seal between the cylindrical sealing cylinder 10 and the pipeline 50 is completed, the water source flowing through the pipeline 50 can no longer seep out from the ruptured part, thus completing the pressure plugging and repair operation of the pipeline 50; when the above-mentioned inflatable cleaning component 20 expands to seal the cylindrical sealing cylinder 10 and the pipeline 50, since the inflatable cleaning component 20 has cleaned the dust and debris on the outer wall of the pipeline 50 during the previous rotation process, the inflatable cleaning component 20 can be in close contact with the outer wall of the pipeline 50 without being affected by dust and debris when it expands, thereby improving the sealing effect between the cylindrical sealing cylinder 10 and the pipeline 50, and further improving the plugging and repair effect of the pipeline 50.

[0042] Please refer to Figure 1 , Figure 3 , Figure 4 and Figure 6, in one embodiment, the cylindrical sealing cylinder 10 includes two sets of semi-circular plates 101. On the outer sides of the two sets of semi-circular plates 101, extension side plates 103 are fixedly arranged. Semi-circular holes are formed at both opposite ends of the two sets of semi-circular plates 101. Inside the semi-circular holes at both opposite ends of the two sets of semi-circular plates 101, semi-circular support plates 102 are fixedly arranged. The inflatable cleaning assembly 20 is arranged on the inner walls of the semi-circular support plates 102. Bolt holes 1031 corresponding to each other are formed on the extension side plates 103 on the outer sides of the two sets of semi-circular plates 101.

[0043] By sandwiching the two sets of semi-circular plates 101 on the outside of the pipeline 50 respectively and making the two sets of semi-circular plates 101 close into a cylindrical structure. At this time, the extension side plates 103 on the outer sides of the two sets of semi-circular plates 101 are mutually attached, and the bolt holes 1031 on the two extension side plates 103 are correspondingly communicated. The four semi-circular support plates 102 are pairwise opposite and synchronously sandwich the outside of the pipeline 50. Then, the bolt and nut assembly 104 is passed through the communicated bolt holes 1031 and the two extension side plates 103 are locked into one body, so as to lock the two sets of semi-circular plates 101 into one body, making the two sets of semi-circular plates 101 stably sleeved on the outside of the pipeline 50. After the two sets of semi-circular plates 101 are sleeved on the outside of the pipeline 50, the staff can rotate the two sets of semi-circular plates 101 around the pipeline 50, and then drive the inflatable cleaning assembly 20 to rotate around the outer wall of the pipeline 50 through the semi-circular support plates 102. During the rotation of the inflatable cleaning assembly 20, it can wipe the current outer surface of the pipeline 50, and cooperate with the water flowing outward along the outer wall of the pipeline 50, so as to realize the cleaning of the outer wall of the pipeline 50, so that when the inflatable cleaning assembly 20 expands later, it will not be affected by dust and sundries and effectively seal the two sets of semi-circular plates 101 and the pipeline 50.

[0044] Please refer to Figure 6 , in one embodiment, a sealing gasket 105 is further arranged on one side of the extension side plate 103. After the bolt and nut assembly 104 locks the two extension side plates 103, the sealing gasket 105 can seal the gap between the two extension side plates 103, and then seal the gap between the two sets of semi-circular plates 101, so as to seal the water source entering between the two sets of semi-circular plates 101.

[0045] Please refer to Figure 5, in one embodiment, the air supply assembly 30 includes a threaded rod 302, an air storage cylinder 303, a threaded column cylinder 304, and a piston block 305. There are two sets of the air storage cylinders 303, and the two sets of air storage cylinders 303 are respectively fixedly arranged on the side walls of the two semi-circular plates 101. There are two sets of the piston blocks 305, and the two sets of piston blocks 305 are respectively movably arranged inside the two air storage cylinders 303. A set of the threaded column cylinders 304 are respectively fixedly arranged on one side of the two sets of piston blocks 305. The threaded rod 302 is in threaded fit with the inner part of the end of the two sets of threaded column cylinders 304 far away from the piston block 305. The end of the threaded rod 302 far away from the corresponding threaded column cylinder 304 extends outside the air storage cylinder 303. There are two sets of the shunt air supply assemblies 40. One set of the shunt air supply assemblies 40 is used to connect one of the air storage cylinders 303 with the inflatable cleaning assemblies 20 inside the two semi-circular support plates 102, and the other set of the shunt air supply assemblies 40 is used to connect the other air storage cylinder 303 with the inflatable cleaning assemblies 20 inside the other two semi-circular support plates 102.

[0046] When the inflatable cleaning assembly 20 rotates around the pipeline 50 and finishes cleaning the dust and sundries on the corresponding area of the outer wall of the pipeline 50, the staff can first rotate one of the threaded rods 302. By the threaded fit of the threaded rod 302 and the corresponding threaded column cylinder 304, the corresponding piston block 305 is driven to move along the inside of the corresponding air storage cylinder 303. When the piston block 305 moves, the air inside the corresponding air storage cylinder 303 is pressed through one of the shunt air supply assemblies 40 into the inflatable cleaning assembly 20 inside the two semi-circular support plates 102, so as to drive the inflatable cleaning assembly 20 inside the two semi-circular support plates 102 to expand, and then tighten the gap between the two semi-circular plates 102 and the pipeline 50. Subsequently, the staff rotates the other threaded rod 302. By the threaded fit of the threaded rod 302 and the corresponding threaded column cylinder 304, the corresponding piston block 305 is driven to move along the inside of the corresponding air storage cylinder 303. When the piston block 305 moves, the air inside the corresponding air storage cylinder 303 is pressed through the other shunt air supply assembly 40 into the inflatable cleaning assembly 20 inside the other two semi-circular support plates 102, so as to drive the inflatable cleaning assembly 20 inside the other two semi-circular support plates 102 to expand, and then tighten the gap between the other two semi-circular plates 102 and the pipeline 50. In this way, the inflatable cleaning assembly 20 can seal the gaps between the four groups of semi-circular plates 102 and the pipeline 50, so as to realize the leak stoppage and repair of the cracked part of the pipeline 50.

[0047] Please refer to Figure 5, in one embodiment, handles 301 are provided at one ends of the two groups of the threaded rods 302 corresponding to the outside of the air storage cylinder 303. Through the arrangement of the handles 301, it is convenient to rotate the threaded rods 302.

[0048] Please refer to Figure 5 , in one embodiment, guide strips 306 are fixedly arranged along the length direction on the inner wall of the air storage cylinder 303, and clamping grooves (not shown in the figure) adapted to the guide strips 306 are formed on the side wall of the piston block 305.

[0049] The side wall of the piston block 305 is slidably matched with the guide strip 306 through the clamping groove, so that when the threaded rod 302 rotates, it can drive the piston block 305 to move smoothly along the inside of the air storage cylinder 303 through the threaded cooperation with the threaded column cylinder 304, and then smoothly press air into the inflatable cleaning assembly 20 through the shunt air supply assembly 40.

[0050] Please refer to Figure 2 and Figure 4 , in one embodiment, the inflatable cleaning assembly 20 includes a plurality of strip-shaped air bags, and the plurality of strip-shaped air bags are spaced apart and distributed on the inner wall of the semi-circular support plate 102. The shunt air supply assembly 40 includes air supply branch pipes 401, a first air supply main pipe 402 and a second air supply main pipe 403. The first air supply main pipe 402 is arranged outside the semi-circular support plate 102. A plurality of groups of the air supply branch pipes 401 are provided corresponding to the strip-shaped air bags one by one. One ends of the plurality of air supply branch pipes 401 are communicated with the first air supply main pipe 402, and the other ends respectively pass through the semi-circular support plate 102 and are communicated with the plurality of strip-shaped air bags correspondingly. The air delivery pipe 404 is installed at the bottom of the air storage cylinder 303. One end of the second air supply main pipe 403 is communicated with the air delivery pipe 404, and the other end is communicated with the first air supply main pipe 402.

[0051] After the two sets of semi-circular plates 101 are locked outside the pipeline 50, the staff can rotate the two sets of semi-circular plates 101 around the pipeline 50, thereby driving the four sets of semi-circular support plates 102 to rotate around the pipeline 50. When the four sets of semi-circular support plates 102 rotate, a number of strip-shaped air bags on their respective inner walls act on the outer wall of the pipeline 50, thereby wiping the current area of the outer wall of the pipeline 50. In cooperation with the water flowing outward between adjacent strip-shaped air bags, the dust and debris on the current area of the outer wall of the pipeline 50 are cleaned; when the threaded rod 302 rotates and drives the piston block 305 to move along the inside of the air storage cylinder 303 through the threaded cooperation with the threaded column cylinder 304, the piston block 305 can sequentially press the air inside the air storage cylinder 303 into a number of strip-shaped air bags through the air delivery pipe 404, the second air delivery main pipe 403, the first air delivery main pipe 402 and a number of air delivery branch pipes 401 respectively, thereby driving the number of strip-shaped air bags to expand and deform, so that the number of strip-shaped air bags originally arranged at intervals are tightened against each other. At the same time, the number of strip-shaped air bags are tightened against the outer wall of the pipeline 50, thereby sealing the gap between the pipeline 50 and the semi-circular support plate 102, and realizing the pressure-bearing leakage plugging and repair operation of the pipeline 50.

[0052] Please refer to Figure 4 In one embodiment, the first air delivery main pipe 402 is arranged in an arc structure outside the semi-circular plate 102.

[0053] In one embodiment, the number of strip-shaped air bags on the inner wall of the semi-circular plate 102 can be arranged at intervals along the length direction of the semi-circular plate 102, or can be arranged at intervals in a spiral shape, and no limitation is made here.

[0054] In one embodiment, the sealing gasket 105 can be a rubber gasket or a silica gel gasket, and no limitation is made here.

[0055] The working principle of the present invention is as follows:

[0056] When plugging and repairing a ruptured pipeline 50, two sets of semi-circular plates 101 can be respectively clamped outside the pipeline 50 at a position far from the ruptured part (with this setting, the semi-circular plates 101 can be smoothly installed without being affected by the water jet ejected from the ruptured part of the pipeline 50 during the clamping process). Then, the two sets of semi-circular plates 101 are locked by the bolt and nut assembly 104. Subsequently, the two sets of semi-circular plates 101 are pushed along the outside of the pipeline 50 towards the ruptured part to move the two sets of semi-circular plates 101 to the outside of the area where the ruptured part is located. Then, the two sets of semi-circular plates 101 are rotated around the pipeline 50. The two sets of semi-circular plates 101 drive several strip-shaped air bags on the inner walls of the four sets of semi-circular support plates 102 to rotate through the four sets of semi-circular support plates 102. When the several strip-shaped air bags rotate, they wipe the current outer surface of the pipeline 50. In cooperation with the water flowing out from the inside of the two sets of semi-circular plates 101, the dust and debris on the outer surface of the pipeline 50 are cleaned. After the dust and debris on the outer surface of the pipeline 50 are cleaned, the staff rotate the two sets of handles 301 successively. Then, through the threaded cooperation of the two sets of threaded rods 302 and the two sets of threaded column cylinders 304, the two sets of piston blocks 305 are driven to move successively along the inside of their respective air storage cylinders 303. Then, air is respectively filled into the several strip-shaped air bags through the air delivery pipes 404, the second main air delivery pipe 403, the first main air delivery pipe 402, and several air delivery branch pipes 401, so that the several strip-shaped air bags are tightened against each other and simultaneously tighten the outer wall of the pipeline 50, realizing the sealing between the ends of the two sets of semi-circular plates 101 and the pipeline 50. When the sealing between the ends of the two sets of semi-circular plates 101 and the pipeline 50 is completed, the subsequent water source flowing through the inside of the pipeline 50 no longer leaks out through the ruptured part, thus realizing the plugging and repairing operation of the ruptured part of the pipeline 50.

[0057] In an embodiment of the present invention, when it is necessary to plug and repair a ruptured pipeline 50, the cylindrical sealing cylinder 10 can be sleeved outside the pipeline 50, and the ruptured part of the pipeline 50 is located inside the cylindrical sealing cylinder 10. The water flow ejected through the ruptured part of the pipeline 50 can quickly enter the internal area of the cylindrical sealing cylinder 10, and then the water flow flows out through the gaps between the through holes at both ends of the cylindrical sealing cylinder 10 and the pipeline 50. At this time, the staff can rotate the cylindrical sealing cylinder 10 around the pipeline 50, and the cylindrical sealing cylinder 10 drives the inflatable cleaning assembly 20 to rotate synchronously. During the rotation of the inflatable cleaning assembly 20, the area of the outer wall of the pipeline 50 covered by the inflatable cleaning assembly 20 can be wiped, and in cooperation with the outward flowing water flow, so as to clean the area of the outer wall of the pipeline 50 covered by the inflatable cleaning assembly 20, in order to prevent dust and sundries from remaining on the outer surface of the pipeline 50. After the outer wall of the pipeline 50 is cleaned, the air supply assembly 30 can be used to supply air into the shunt air supply assembly 40, and the air is sent into the inflatable cleaning assembly 20 through the shunt air supply assembly 40, so that the inflatable cleaning assembly 20 expands. The expanded inflatable cleaning assembly 20 tightens the gap between the cylindrical sealing cylinder 10 and the pipeline 50, so as to realize the sealing between the cylindrical sealing cylinder 10 and the pipeline 50. After the sealing between the cylindrical sealing cylinder 10 and the pipeline 50 is completed, the water source flowing through the inside of the pipeline 50 can no longer seep out from the ruptured part, thus completing the plugging and repair operation of the pipeline 50 under pressure; when the above-mentioned inflatable cleaning assembly 20 expands to seal the cylindrical sealing cylinder 10 and the pipeline 50, since the inflatable cleaning assembly 20 has cleaned the dust and sundries on the outer wall of the pipeline 50 during the previous rotation process, the inflatable cleaning assembly 20 can be in close contact with the outer wall of the pipeline 50 without being affected by dust and sundries when it expands, so as to improve the sealing effect between the cylindrical sealing cylinder 10 and the pipeline 50, and further improve the plugging and repair effect of the pipeline 50. Compared with the prior art, when plugging and repairing the ruptured part of the pipeline 50, it is possible to clean the dust and sundries on the area of the outer surface of the pipeline 50 used for sealing, so as to avoid the influence of the existence of dust and sundries on the subsequent sealing effect, and has the advantage of good plugging and repair effect of the pipeline 50.

[0058] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention, and any reference signs in the claims should not be regarded as limiting the claimed rights.

[0059] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressure repair structure for large-diameter pipelines, characterized in that, It includes a cylindrical sealing cylinder (10), an inflatable cleaning component (20), a gas supply component (30), and a shunt air supply component (40). Through holes for a pipeline (50) to pass through are formed at opposite ends of the cylindrical sealing cylinder (10), and the inflatable cleaning component (20) is arranged inside the through holes. The gas supply component (30) is installed on the side wall of the cylindrical sealing cylinder (10). One end of the shunt air supply component (40) is connected to the air outlet end of the gas supply component (30), and the other end is connected to the inflatable cleaning component (20). The gas supply component (30) is used to supply air into the shunt air supply component (40), and the air enters the inflatable cleaning component (20) through the shunt air supply component (40) and drives the inflatable cleaning component (20) to expand, so as to realize the sealing between the cylindrical sealing cylinder (10) and the pipeline (50).

2. The pressure repair structure for large-diameter pipelines according to claim 1, wherein, The cylindrical sealing cylinder (10) includes two groups of semi-circular plates (101). Extension side plates (103) are fixedly arranged on the outer sides of the two groups of semi-circular plates (101). Semi-circular holes are formed at opposite ends of the two groups of semi-circular plates (101), and semi-circular support plates (102) are fixedly arranged inside the semi-circular holes at opposite ends of the two groups of semi-circular plates (101). The inflatable cleaning component (20) is arranged on the inner wall of the semi-circular support plate (102). Bolt holes (1031) are formed in the extension side plates (103) on the outer sides of the two groups of semi-circular plates (101) in one-to-one correspondence.

3. The pressure repair structure for large-diameter pipelines according to claim 2, characterized in that, A sealing gasket (105) is further arranged on one side of the extension side plate (103). After the two extension side plates (103) are locked by a bolt and nut assembly (104), the sealing gasket (105) seals the gap between the two extension side plates (103).

4. A pressure repair structure for large-diameter pipelines according to claim 2, characterized in that, The gas supply component (30) includes a threaded rod (302), an air storage cylinder (303), a threaded column cylinder (304), and a piston block (305). There are two groups of air storage cylinders (303), and the two groups of air storage cylinders (303) are respectively fixedly arranged on the side walls of the two groups of semi-circular plates (101). There are two groups of piston blocks (305), and the two groups of piston blocks (305) are respectively movably arranged inside the two groups of air storage cylinders (303). A group of threaded column cylinders (304) are fixedly arranged on one side of each of the two groups of piston blocks (305). Threaded rods (302) are in threaded fit with the inner parts of the two groups of threaded column cylinders (304) far away from the piston blocks (305), and the ends of the threaded rods (302) far away from the corresponding threaded column cylinders (304) extend outside the air storage cylinders (303). There are two sets of the shunt air supply assemblies (40). One set of the shunt air supply assemblies (40) is used to connect one set of the air storage cylinders (303) with the inflatable cleaning assemblies (20) inside two sets of the semi-circular support plates (102), and the other set of the shunt air supply assemblies (40) is used to connect the other set of the air storage cylinders (303) with the inflatable cleaning assemblies (20) inside the other two sets of the semi-circular support plates (102).

5. A large-diameter pipeline pressure repair structure according to claim 4, characterized in that, Handles (301) are provided at one ends of the two sets of threaded rods (302) located outside the corresponding air storage cylinders (303).

6. The pressure repair structure for large-diameter pipelines according to claim 4, characterized in that, Guide strips (306) are fixedly arranged along the length direction on the inner wall of the air storage cylinder (303), and clamping grooves adapted to the guide strips (306) are formed on the side wall of the piston block (305).

7. A pressure repair structure for large-diameter pipelines according to claim 4, characterized in that, The inflatable cleaning assembly (20) includes a plurality of strip-shaped air bags, and the plurality of strip-shaped air bags are spaced apart and distributed on the inner wall of the semi-circular support plate (102). The shunt air supply assembly (40) includes air supply branch pipes (401), a first air supply main pipe (402), and a second air supply main pipe (403). The first air supply main pipe (402) is arranged outside the semi-circular support plate (102). A plurality of groups of the air supply branch pipes (401) are provided corresponding to the strip-shaped air bags one by one. One ends of the plurality of air supply branch pipes (401) are communicated with the first air supply main pipe (402), and the other ends respectively pass through the semi-circular support plate (102) and are correspondingly communicated with the plurality of strip-shaped air bags. An air delivery pipe (404) is installed at the bottom of the air storage cylinder (303). One end of the second air supply main pipe (403) is communicated with the air delivery pipe (404), and the other end is communicated with the first air supply main pipe (402).

8. A pressure repair structure for large-diameter pipelines according to claim 7, characterized in that, The first air supply main pipe (402) is arranged in an arc structure outside the semi-circular plate (102).

9. A pressure repair structure for large-diameter pipelines according to claim 7, characterized in that, The plurality of strip-shaped air bags are arranged at intervals along the length direction of the semi-circular plate (102) on the inner wall of the semi-circular plate (102).

10. A pressure repair structure for large-diameter pipelines according to claim 7, characterized in that, The plurality of strip-shaped air bags are arranged at intervals in a spiral shape on the inner wall of the semi-circular plate (102).

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