Non-excavation lining repairing device for underground pipe network

Abstract

The utility model relates to an underground pipe network trenchless lining repairing device which comprises a sealing sleeve and a bonding layer, and the bonding layer is arranged on the periphery of the sealing sleeve and coated on the inner periphery of a broken position of a pipeline. The two ends of the sealing sleeve are coaxially combined with inner supporting shaping assemblies used for enabling the sealing sleeve to keep the circumferential shape stable. The non-excavation repairing device has the advantages that non-excavation repairing operation on the broken position of the underground pipeline can be achieved in the mode that the sealing sleeve blocks and shields the broken position of the pipeline, and repairing operation on the broken position of the underground pipeline is simple and easy to achieve; meanwhile, an inner supporting ring plate of the inner supporting shaping assembly is arranged on the inner periphery of the sealing sleeve in a tensioning and sleeving manner and is axially limited by a limiting flange, so that the sealing sleeve can be tightly supported from the inside, and the circumferential shape of the sealing sleeve is kept stable and does not deform; and meanwhile, the sealing flange can press and block the edge position where the sealing sleeve is combined with the inner periphery of the pipeline in an extrusion deformation mode.

Description

Technical Field

[0001] This utility model relates to the field of trenchless repair auxiliary components for underground pipelines, specifically to a trenchless lining repair device for underground pipelines. Background Technology

[0002] After a long period of operation, urban underground drainage pipes will suffer varying degrees of damage due to various factors, and may even cause road collapses. In the past, damaged pipes were often replaced by excavating the road surface. However, excavation and repair is time-consuming, costly, labor-intensive, and has significant impacts on traffic and the environment, resulting in high overall social costs. Therefore, trenchless methods are now commonly used to repair damaged pipes from the inside.

[0003] In existing technologies, stainless steel quick-lock repair is a commonly used lining method. Specifically, annular rubber water-stop sealing strips and stainless steel collars are the main repair materials. Rubber double expansion rings are installed at pipe joints or locally damaged areas. After the rubber strip is in place, it is fixed with 2-3 stainless steel expansion rings to achieve water-stopping. However, in actual operation, the above-mentioned lining repair device lacks a way to retain the shape of the rubber strip in the axial direction. This causes the rubber strip to easily shrink and deform axially after a period of use due to impacts from pipe dirt and other contaminants. This directly leads to the failure of the rubber strip to repair the damaged area of ​​the pipe. Utility Model Content

[0004] The purpose of this utility model is to provide a trenchless lining repair device for underground pipelines to solve the above-mentioned problems. By tightening the inner support ring plate of the inner support shaping component and fitting it into the inner circumference of the sealing sleeve and axially limiting it by the limiting flange, the sealing sleeve can be tightened from the inside to maintain its circumferential shape stability and ensure that the sealing sleeve has a good and stable shape retention capability. At the same time, the sealing flange can be squeezed and deformed to press and seal the edge position where the sealing sleeve and the inner circumference of the pipeline are joined, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This utility model provides a trenchless lining repair device for underground pipelines, including a sealing sleeve and an adhesive layer. The axis of the sealing sleeve is arranged in the transverse direction. The adhesive layer is disposed on the outer periphery of the sealing sleeve and coated on the inner periphery of the broken part of the pipeline, so as to firmly bond the outer periphery of the sealing sleeve with the inner periphery of the broken part of the pipeline to be repaired through the adhesive layer.

[0007] Both ends of the sealing sleeve are coaxially combined with an inner support and shaping component to keep the sealing sleeve circumferentially stable.

[0008] Multiple axial support components are combined between the inner support shaping components on both sides to keep the sealing sleeve axially stable, and the axial support components are all arranged along the axial direction of the sealing sleeve.

[0009] Preferably, the sealing sleeve is a rubber cylinder, and the outer diameter of the sealing sleeve is consistent with the inner diameter of the pipe to be repaired.

[0010] Preferably, sealing flanges are fixedly connected to both ends of the outer periphery of the sealing sleeve, and the cross-sectional shape of the sealing flanges along the transverse vertical plane is a right triangle with the hypotenuse located at the outer edge.

[0011] Preferably, the adhesive layer is a resin adhesive, and the thickness of the adhesive layer is consistent with the vertical dimension of the sealing flange.

[0012] Preferably, each of the inner support shaping components includes a limiting flange and an inner support ring plate. The limiting flange is fixedly extended around the inner circumference of the sealing sleeve at both ends. The inner support ring plate is coaxially sleeved at both ends of the inner circumference of the sealing sleeve in a tension fit manner. The inner support ring plates at both sides are respectively located on the outer side of the corresponding limiting flange, and the inner support ring plates are in close contact with the outer end face of the corresponding limiting flange.

[0013] Preferably, the limiting flange is an annular flange, and the inner support ring plate is an annular steel plate with an inner diameter not less than the inner diameter of the limiting flange.

[0014] Preferably, each of the axial support components includes a wing and a connecting screw. The inner circumference of the inner support ring plate is radially extended and fixed with multiple winglets. Each winglet has a mating hole opened in the transverse direction, and the mating holes on both sides are coaxially aligned in the transverse direction. A connecting screw is inserted in the transverse direction between each set of transversely aligned mating holes, and the ends of the connecting screws are coaxially engaged with limit nuts at the positions extending out of the corresponding mating holes. At the same time, the limit nuts can press against the corresponding outer surface of the winglet.

[0015] Preferably, all the mating holes are threaded holes, and all the connecting screws pass through the corresponding mating holes in a threaded manner.

[0016] Preferably, the connecting screw is provided with anti-loosening washers on the portion between the limiting nut and the outer surface of the wing.

[0017] Preferably, the number of axial support components is four or six, and the plurality of axial support components are evenly distributed along the circumference.

[0018] Using the aforementioned trenchless lining repair device for underground pipelines, specifically for repairing damaged areas of underground pipelines, the adhesive layer allows the outer periphery of the sealing sleeve to be firmly bonded to the inner periphery of the damaged area of ​​the pipeline to be repaired. This sealing sleeve then covers and seals the damaged area, enabling trenchless repair of the underground pipeline. The repair operation is simple and easy to implement. Furthermore, both ends of the sealing sleeve are coaxially fitted with an inner support shaping component to maintain the circumferential shape stability of the sealing sleeve. The inner support ring plate of the inner support shaping component is tightened and fitted within the inner periphery of the sealing sleeve and axially limited by the limiting flange. This internal tightening maintains the circumferential shape of the sealing sleeve, ensuring good and stable shape retention. This design not only enhances the sealing performance of the sealing sleeve but also allows the sealing flange to be compressed and deformed to seal the edge where the sealing sleeve meets the inner circumference of the pipe, thus improving the sealing stability at the end of the sealing sleeve. Furthermore, multiple axial support components are arranged between the inner support ring plates on both sides to maintain the axial shape stability of the sealing sleeve. These axial support components are all arranged along the axial direction of the sealing sleeve. By having the connecting screws of the axial support components pass through the mating holes and then fitted with limiting nuts, the distance between the inner support ring plates on both sides remains stable. This prevents axial shrinkage deformation of the sealing sleeve by ensuring the inner support ring plates do not shift and remain tightened within the inner circumference of the sealing sleeve end, further improving the sealing stability and reliable service life of the sealing sleeve.

[0019] The beneficial effects are as follows: 1. This utility model can make the outer periphery of the sealing sleeve and the inner periphery of the broken part of the pipeline to be repaired firmly bonded together through the adhesive layer. Then, by sealing and covering the broken part of the pipeline through the sealing sleeve, non-excavation repair operation of the broken part of the underground pipeline can be realized. The repair operation of the broken part of the underground pipeline is simple and easy to implement. At the same time, both ends of the sealing sleeve are coaxially combined with an inner support shaping component to keep the sealing sleeve circumferentially stable. Then, by the inner support ring plate of the inner support shaping component being tightened and fitted into the inner periphery of the sealing sleeve and axially limited by the limiting flange, the sealing sleeve can be tightened from the inside to keep its circumferential shape stable and undeformed, ensuring that the sealing sleeve has a good and stable shape retention capability. At the same time, the sealing flange can be squeezed and deformed to press and seal the edge of the sealing sleeve and the inner periphery of the pipeline, improving the sealing stability effect at the end of the sealing sleeve.

[0020] 2. Multiple axial support components are combined between the inner support ring plates on both sides to keep the axial shape of the sealing sleeve stable. The axial support components are all set along the axial direction of the sealing sleeve. By using the connecting screws of the axial support components to pass through the mating holes and then installing limit nuts, the distance between the inner support ring plates on both sides can be kept stable. This can prevent the sealing sleeve from axially shrinking and deforming by keeping the inner support ring plates fixed and tightened at the inner circumference of the sealing sleeve end. This is beneficial to further improve the sealing stability and reliable service life of the sealing sleeve. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an overall axial schematic diagram of the present invention with four axial support components;

[0023] Figure 2 This is a utility model Figure 1 A schematic diagram of the cross-section;

[0024] Figure 3 This is a utility model Figure 2 Enlarged view of a portion at point A;

[0025] Figure 4 This is a utility model Figure 1 Front view diagram;

[0026] Figure 5 This is an overall axial schematic diagram of the present invention, which is equipped with six axial support components.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1. Adhesive layer; 2. Sealing sleeve; 201. Sealing flange; 3. Inner support shaping assembly; 301. Limiting flange; 302. Inner support ring plate; 4. Axial support assembly; 401. Wing; 402. Connecting screw; 403. Limiting nut; 404. Anti-loosening washer; 405. Mating hole. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] See Figures 1-5 As shown, this utility model provides a trenchless lining repair device for underground pipelines, including a sealing sleeve 2 and an adhesive layer 1. The axis of the sealing sleeve 2 is arranged transversely, and the adhesive layer 1 is disposed on the outer periphery of the sealing sleeve 2 and coated on the inner periphery of the broken part of the pipeline. The adhesive layer 1 is used to firmly bond the outer periphery of the sealing sleeve 2 with the inner periphery of the broken part of the pipeline to be repaired. The advantage of this arrangement is that by sealing and covering the broken part of the pipeline with the sealing sleeve 2, trenchless repair of the broken part of the underground pipeline can be achieved. The repair operation of the broken part of the underground pipeline is simple and easy to implement.

[0031] See Figures 1-5 As shown, both ends of the sealing sleeve 2 are coaxially assembled with inner support shaping components 3 to maintain the circumferential shape stability of the sealing sleeve 2. Specifically, each inner support shaping component 3 includes a limiting flange 301 and an inner support ring plate 302. The limiting flange 301 is fixedly extended around the inner circumference of both ends of the sealing sleeve 2. The inner support ring plate 302 is coaxially sleeved at both ends of the inner circumference of the sealing sleeve 2 in a tension fit manner. The inner support ring plates 302 at the two sides are respectively located at the corresponding limiting flanges 301. The outer positions are such that the inner support ring plates 302 are in close contact with the outer end faces of the corresponding limiting flanges 301. The purpose of this arrangement is that the inner support ring plates 302 of the inner support shaping component 3 are tightened and fitted into the inner circumference of the sealing sleeve 2 and axially limited by the limiting flanges 301. This can both tighten the sealing sleeve 2 from the inside to maintain its circumferential shape stability and prevent deformation, and also allow the sealing flanges 201 to press and seal the edge position where the sealing sleeve 2 meets the inner circumference of the pipe by compression deformation.

[0032] See Figures 1-4As shown, multiple axial support components 4 are combined between the inner support shaping components 3 on both sides to keep the sealing sleeve 2 axially stable. The axial support components 4 are all arranged along the axial direction of the sealing sleeve 2. Specifically, each axial support component 4 includes a wing 401 and a connecting screw 402. Multiple wing 401s are radially extended and fixed to the inner circumference of the inner support ring plate 302. Each wing 401 has a mating hole 405 opened laterally, and the mating holes 405 on both sides are coaxially aligned laterally. A connecting screw 402 is inserted coaxially between each set of laterally aligned mating holes 405. 2. The ends of the connecting screw 402 are coaxially engaged with the limiting nuts 403 at the positions where they extend out of the corresponding mating holes 405. At the same time, the limiting nuts 403 can press against the corresponding outer surface of the wing 401. The purpose of this arrangement is that by having the connecting screw 402 of the axial support assembly 4 pass through the mating holes 405 at both ends and then installing the limiting nuts 403, the distance between the inner support ring plates 302 on both sides can be kept stable. This way, the sealing sleeve 2 can be prevented from axially shrinking and deforming by the inner support ring plates 302 not shifting and being tightened within the inner circumference of the end of the sealing sleeve 2.

[0033] See Figures 1-4 As shown, the sealing sleeve 2, the inner support shaping component 3, and the axial support component 4 have been optimized as follows. Specifically, the sealing sleeve 2 is a rubber cylinder, and its outer diameter is consistent with the inner diameter of the pipe to be repaired, so that the sealing sleeve 2 can adhere to and cover the broken and repaired position on the inner circumference of the pipe. Optionally, sealing flanges 201 are extended and fixed to both ends of the outer periphery of the sealing sleeve 2. The cross-sectional shape of the sealing flanges 201 along the transverse and vertical planes is a right triangle, and the hypotenuse is located on the outer edge. With this setting, the hypotenuse of the sealing flange 201 can be elastically squeezed against the inner circumference of the pipe by means of the inner support ring plate 302 tightening it. This allows the sealing flange 201 to press and seal the edge where the sealing sleeve 2 meets the inner circumference of the pipe through compression deformation, which helps to improve the sealing effect at the end of the sealing sleeve 2. Furthermore, the adhesive layer 1 is a resin adhesive, and the thickness of the adhesive layer 1 is consistent with the vertical dimension of the sealing flange 201, so that the adhesive layer 1 has the material properties and coating thickness that meet the requirements of use, ensuring that the outer periphery of the sealing sleeve 2 can be stably adhered to the inner periphery of the pipe to be repaired for use.

[0034] See Figures 1-5As shown, specifically for the inner support shaping component 3 and the axial support component 4, the limiting flange 301 is an annular flange, and the inner support ring plate 302 is an annular steel plate with an inner diameter not less than the inner diameter of the limiting flange 301. This allows the inner support ring plate 302 to be coaxially tightened and fitted within the inner circumference of the sealing sleeve 2 and to smoothly adhere to the outer surface of the limiting flange 301. Optionally, the mating holes 405 are all threaded holes, and the connecting screws 402 pass through the corresponding mating holes 405 in a threaded manner, allowing the connecting screws 402 to be axially inserted through the corresponding mating holes 405 sequentially by tightening. The portion of the connecting screw between the corresponding limiting nut 403 and the outer surface of the wing 401 is coaxially slidably fitted with anti-loosening washers 404. This arrangement prevents the limiting nut 403 from loosening naturally by pressing the anti-loosening washer 404 against the surface of the wing 401 by tightening the limiting nut 403. Furthermore, the number of axial support components 4 is four or six, and the multiple axial support components 4 are evenly distributed along the circumference. This arrangement facilitates the regularity of the arrangement of the axial support components 4, and also makes it easier for the multiple axial support components 4 to apply force evenly in the circumference and play their respective roles.

[0035] Using the above structure, specifically in the actual repair of damaged underground pipelines, the adhesive layer 1 allows the outer periphery of the sealing sleeve 2 to be firmly bonded to the inner periphery of the damaged area of ​​the pipeline to be repaired. This allows for trenchless repair of the damaged area by sealing the sleeve 2. The repair operation is simple and easy to implement. Furthermore, both ends of the sealing sleeve 2 are coaxially fitted with an inner support shaping component 3 to maintain the circumferential shape stability of the sealing sleeve 2. The inner support ring plate 302 of the inner support shaping component 3 is tightened and fitted within the inner periphery of the sealing sleeve 2 and axially limited by the limiting flange 301. This not only internally tightens the sealing sleeve 2 to maintain its circumferential shape stability and prevent deformation, but also ensures that the sealing sleeve 2 has good and stable shape retention capabilities. The sealing flange 201 presses and seals the edge of the sealing sleeve 2 and the inner circumference of the pipe by compression deformation, which improves the sealing stability of the end of the sealing sleeve 2. In addition, multiple axial support components 4 are combined between the inner support ring plates 302 on both sides to keep the axial shape of the sealing sleeve 2 stable. The axial support components 4 are all arranged along the axial direction of the sealing sleeve 2. Then, by having the connecting screws 402 of the axial support components 4 pass through the mating holes 405 at both ends and then be fitted with limit nuts 403, the distance between the inner support ring plates 302 on both sides can be kept stable. Thus, by the inner support ring plates 302 not shifting and being tightened in the inner circumference of the end of the sealing sleeve 2, the axial shrinkage deformation of the sealing sleeve 2 can be prevented. This is conducive to further improving the sealing stability and reliable service life of the sealing sleeve 2.

[0036] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A trenchless lining repair device for underground pipelines, comprising a sealing sleeve (2) and an adhesive layer (1), characterized in that: The axis of the sealing sleeve (2) is arranged in the transverse direction. The adhesive layer (1) is arranged on the outer periphery of the sealing sleeve (2) and coated on the inner periphery of the broken pipe location, so as to make the outer periphery of the sealing sleeve (2) and the inner periphery of the broken pipe location to be repaired firmly bonded together through the adhesive layer (1). Both ends of the sealing sleeve (2) are coaxially combined with an inner support shaping component (3) to keep the sealing sleeve (2) circumferentially stable. Multiple axial support components (4) are combined between the inner support shaping components (3) on both sides to keep the sealing sleeve (2) axially stable, and the axial support components (4) are all arranged along the axial direction of the sealing sleeve (2).

2. The trenchless lining repair device for underground pipelines according to claim 1, characterized in that: The sealing sleeve (2) is a rubber cylinder, and the outer diameter of the sealing sleeve (2) is consistent with the inner diameter of the pipe to be repaired.

3. The trenchless lining repair device for underground pipelines according to claim 2, characterized in that: The sealing sleeve (2) has sealing flanges (201) that extend and are fixed to both ends of the outer periphery. The cross-sectional shape of the sealing flanges (201) along the horizontal vertical plane is a right triangle and the hypotenuse is located on the outer edge.

4. The trenchless lining repair device for underground pipelines according to claim 3, characterized in that: The adhesive layer (1) is a resin adhesive, and the thickness of the adhesive layer (1) is consistent with the vertical dimension of the sealing flange (201).

5. The trenchless lining repair device for underground pipelines according to claim 3 or 4, characterized in that: The inner support shaping component (3) includes a limiting flange (301) and an inner support ring plate (302). The limiting flange (301) is fixedly extended around the inner circumference of the sealing sleeve (2). The inner support ring plate (302) is coaxially sleeved at both ends of the inner circumference of the sealing sleeve (2) in a tension fit manner. The inner support ring plates (302) at both sides are located at the outer side of the corresponding limiting flange (301), and the inner support ring plates (302) are in contact with the outer end face of the corresponding limiting flange (301).

6. The trenchless lining repair device for underground pipelines according to claim 5, characterized in that: The limiting flange (301) is an annular flange, and the inner support ring plate (302) is an annular steel plate with an inner diameter not less than the inner diameter of the limiting flange (301).

7. The trenchless lining repair device for underground pipelines according to claim 6, characterized in that: Each of the axial support components (4) includes a wing (401) and a connecting screw (402). The inner circumference of the inner support ring plate (302) is radially extended and fixed with multiple wing (401). Each wing (401) has a mating hole (405) opened in the transverse direction. The mating holes (405) on both sides are coaxially aligned in the transverse direction. A connecting screw (402) is inserted in the transverse direction between each set of mating holes (405). The ends of the connecting screw (402) are coaxially engaged with limit nuts (403) at the positions where they extend out of the corresponding mating holes (405). At the same time, the limit nuts (403) can press against the outer surface of the wing (401).

8. The trenchless lining repair device for underground pipelines according to claim 7, characterized in that: All the mating holes (405) are threaded holes, and all the connecting screws (402) pass through the corresponding mating holes (405) in a threaded manner.

9. The trenchless lining repair device for underground pipelines according to claim 8, characterized in that: The connecting screw is coaxially slidably fitted with anti-loosening washers (404) on the portion between the corresponding limiting nut (403) and the outer surface of the wing (401).

10. A trenchless lining repair device for underground pipelines according to claim 7, 8, or 9, characterized in that: The number of axial support components (4) is four or six, and the plurality of axial support components (4) are evenly distributed along the circumference.

Images