Non-excavation lining repairing structure for underground pipe network

Abstract

The utility model relates to the technical field of internal repair construction of large pipelines, in particular to a trenchless lining repair structure for an underground pipe network, which solves the technical problem that the internal repair of a pipe wall at a weld joint is stably and safely handled under the trenchless condition of the underground pipe network in the prior art. The repairing method specifically comprises the steps that the repairing lining structure is arranged at a connecting seam of a first to-be-repaired pipe and a second to-be-repaired pipe; the center line of the repairing lining structure and the center line of the first to-be-repaired pipe are located on the same straight line. A height difference is formed between the center line of the first to-be-repaired pipe and the center line of the second to-be-repaired pipe; the repairing lining structure is composed of a plurality of strength rib rings, and a filling protection layer is arranged between every two adjacent strength rib rings. And the sealing component is filled among the first lining pipe, the second lining pipe and the repairing lining structure, so that the repairing lining structure is more suitable for construction of large-diameter pipelines, the construction difficulty and the construction strength can be reduced, and meanwhile, the problems of strength and sealing performance of connecting seam positions are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to large -scale pipeline internal repair construction technical field especially relates to a kind of underground pipe network trenchless lining repair structure. BACKGROUND

[0002] Under current mode, trenchless pipeline lining repair technology is widely applied in various scenes, since in the disposal range of the technology, excavation volume is small, to the damage of ground, especially with large sewage pipeline as repair object, the lining repair construction of current large pipeline needs to have preposed construction condition and requirement, summarized as follows:

[0003] (1) traffic guide changes and material preparation, traffic guide signs, roadblocks and isolation facilities need to be fully prepared before construction, to ensure that construction site is safely isolated.Meanwhile, according to the construction demand, water plugging, pumping, water transfer and other materials are prepared.

[0004] (2) water plugging, pumping and water transfer, before repairing pipeline, inflatable air bag is accurately used to plug water and pump water, then adjust upstream water to downstream sewage well, keep water level balance, ensure that pipeline has no leakage phenomenon.

[0005] (3) high pressure cleaning and dredging, high pressure cleaning vehicle is used to clean pipeline completely, at the same time, manual mechanical stirring sludge is diluted, then sludge is pumped clean by suction vehicle, to ensure that pipeline has no impurities.

[0006] (4) cleaning operation and disposal treatment, oxygen content and toxic gas need to be detected before cleaning operation, and protective articles are worn.After cleaning residual material, slurry barrel is used to hoist garbage, and timely transported to designated disposal field.

[0007] (5) CCTV detection and leakage stopping, CCTV detection robot system is used to record pipeline defects in detail, and leakage stopping treatment is carried out according to detection result, new material such as GBF8005 is used to stop water quickly, to ensure pipeline safety.

[0008] At present, there are many repair technology types related to trenchless pipeline lining repair, below DN600, ultraviolet curing repair technology is mainly used as main application type, with the advantages of trenchless, corrosion resistance, seamless, no leakage, suitable for repairing drainage pipeline whose engineering structure strength is not damaged, especially with minimal impact on environment and facility operation;Other main types of repair technology also include: short pipe lining repair process, local resin curing repair technology, steel sleeve ring local lining method, etc.

[0009] And for large pipeline lining repair, since the nominal gauge is basically above DN800, the actual wall thickness of large pipeline is also increased with the manufacturing standard of the pipeline, such as: standard GB / T8163-2008, "seamless steel pipe for conveying fluid": DN800 carbon steel pipe wall thickness recommended range 14mm~22mm, and the actual design process usually takes the maximum value; But due to the application scene of such pipeline is the sewage pipeline, and the volume and weight are large, it is easy to have leakage failure at the welding seam, which leads to the loss of the surrounding wall thickness, which is not easy to handle. Utility model content

[0010] The utility model solves the technical problem of stable and safe disposal of internal repair of the pipe wall at the welding seam under the non-excavation condition of the underground pipe network in the prior art, and provides an underground pipe network non-excavation lining repair structure.

[0011] In order to solve the above technical problem, the technical scheme of the utility model is as follows:

[0012] An underground pipe network non-excavation lining repair structure comprises:

[0013] A repair bush structure is arranged at the connecting seam of the first pipe to be repaired and the second pipe to be repaired;

[0014] The center line of the repair bush structure is located on the same straight line as the center line of the first pipe to be repaired;

[0015] The center line of the first pipe to be repaired and the center line of the second pipe to be repaired form a height difference;

[0016] The repair bush structure is composed of a plurality of strength rings, and a filling protective layer is arranged between adjacent strength rings;

[0017] A first inner lining pipe is detachably connected with a second inner lining pipe, and the second inner lining pipe can pass through the repair bush structure and be located in the second pipe to be repaired;

[0018] The first inner lining pipe and the second inner lining pipe are high-density polyethylene pipes;

[0019] And

[0020] A sealing part is filled between the first inner lining pipe, the second inner lining pipe and the repair bush structure.

[0021] Optionally, the first pipe to be repaired and the second pipe to be repaired are both welded with the strength ring at the adjacent position of the connecting seam;

[0022] The connecting seam is supplemented with a repair welding angle.

[0023] Optionally, the filling protective layer is composed of mud mortar solidification.

[0024] The filling protective layer has the same inner diameter as the inner diameter of the strength ring.

[0025] Optionally, a blocking ring is welded on a group of the strength rings located in the second pipe to be repaired and farthest from the connecting joint.

[0026] The inner diameter of the blocking ring is larger than the inner diameter of the strength ring.

[0027] Optionally, the first inner liner pipe and the second inner liner pipe are connected through flanges.

[0028] The flange of the first inner liner pipe is provided with a runway-shaped connecting hole.

[0029] The flange of the second inner liner pipe is provided with a corresponding circular threaded connecting hole.

[0030] Optionally, the flanges of the first inner liner pipe and the second inner liner pipe are configured on the respective inner diameters.

[0031] Optionally, the flange of the first inner liner pipe is configured on the inner diameter thereof.

[0032] The flange of the second inner liner pipe is configured on the outer diameter of one side.

[0033] Optionally, after the first inner liner pipe and the second inner liner pipe are connected, a gap area is formed between the inner diameter of the first inner liner pipe and the outer diameter of the second inner liner pipe.

[0034] The sealing part is a polyisobutylene rubber pad, and both sides of the polyisobutylene rubber pad are provided with an epoxy coal tar coating.

[0035] The utility model has the following beneficial effects:

[0036] The advantage of the technical scheme is that the repair liner structure is composed of multiple strength rings, and the filling protective layer is arranged between adjacent strength rings, so that the repair liner structure is simple in configuration, the first inner liner pipe and the second inner liner pipe are detachably connected, the construction of large-diameter pipelines is more suitable, the construction difficulty and construction strength are reduced, and the strength and sealing performance of the connecting joint position are also solved. BRIEF DESCRIPTION OF DRAWINGS

[0037] The utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0038] Figure 1 It is a structural schematic view of the embodiment one of the utility model;

[0039] Figure 2 It is a local enlarged view of the embodiment one of the utility model;

[0040] Figure 3 It is the structural schematic view of the second embodiment of the utility model;

[0041] Figure 4 It is the partial enlarged view of the second embodiment of the utility model;

[0042] Figure 5 It is the schematic view of the flange plate trepanning configuration.

[0043] The reference signs in the drawing represent:

[0044] Repairing bush structure 10, first pipe to be repaired 1, second pipe to be repaired 2, connecting seam 3;

[0045] Height difference h, strength rib ring 100, filling protective layer 200;

[0046] First inner lining pipe 110, second inner lining pipe 120, sealing part 20;

[0047] Repairing fillet 31, blocking ring 1001;

[0048] Connecting hole 131, circular threaded connecting hole 132, flange plate 130, gap area 140. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. It should be noted that, in order to facilitate description, in the current view, "left side" is "first end", "right side" is "second end", "upper side" is "first end", and "lower side" is "second end". The purpose of such description is to clearly express the technical solutions, and it should not be understood as improper limitation on the technical solutions of the application.

[0050] The utility model solves the technical problem of stable and safe disposal of the pipe wall inside the welding seam under the non-excavation condition of the existing underground pipe network, and provides a kind of underground pipe network non-excavation lining repair structure;

[0051] Including two groups of embodiments, specifically, first group of embodiments is please refer to Figure 1 、 2 Second group of embodiments is Figure 3 、 4The overall technical concept is the same, that is, after completing the pre-treatment process in the background art, the inner lining repair is carried out at the connection joint 3 of the first to-be-repaired pipe 1 and the second to-be-repaired pipe 2, and in the present scheme, a repair sleeve structure 10 is used, and the repair sleeve structure 10 is arranged at the connection joint 3 of the first to-be-repaired pipe 1 and the second to-be-repaired pipe 2;

[0052] Due to the fault type of the first to-be-repaired pipe 1 and the second to-be-repaired pipe 2, the center lines of the two are inconsistent, and the center line of the first to-be-repaired pipe 1 and the center line of the second to-be-repaired pipe 2 form a height difference h;

[0053] Therefore, the most direct processing method is adopted in the present scheme, and the repair is consistent with one of the to-be-repaired pipes, so that the center line of the repair sleeve structure 10 and the center line of the first to-be-repaired pipe 1 are located on the same straight line;

[0054] Specifically, the repair sleeve structure 10 is composed of a plurality of strength rib rings 100, and a filling protective layer 200 is arranged between adjacent strength rib rings 100;

[0055] In order to ensure that the water quality after repair is reduced due to the influence of construction, the first inner lining pipe and the second inner lining pipe are configured as high-density polyethylene pipes;

[0056] The first inner lining pipe 110 is detachably connected with a second inner lining pipe 120, and the second inner lining pipe 120 can pass through the repair sleeve structure 10 and be located in the second to-be-repaired pipe 2; and

[0057] The sealing member 20 is filled between the first inner lining pipe 110, the second inner lining pipe 120 and the repair sleeve structure 10;

[0058] The advantage of the present technical solution is that the repair sleeve structure 10 is composed of a plurality of strength rib rings 100, and a filling protective layer 200 is arranged between adjacent strength rib rings 100, so that the repair sleeve structure is simple in configuration, the first inner lining pipe 110 is detachably connected with the second inner lining pipe 120, which is more suitable for the construction of large-diameter pipelines, reduces the construction difficulty and construction strength, and also solves the problem of strength and sealing of the connection joint 3 position.

[0059] In two embodiments, please refer to Figures 1-4 As shown, both of them adopt the scheme that the first to-be-repaired pipe 1 and the second to-be-repaired pipe 2 are welded with strength rib rings 100 at the adjacent positions of the connection joint 3, and the connection joint 3 is supplemented with repair welding angles 31, so as to ensure the strength and make up for the leakage points.

[0060] In two embodiments, please refer to Figures 1-4 As shown, both of them adopt the scheme that the filling protective layer 200 is composed of mud mortar solidification, specifically including mud mortar resin, cement and curing agent;

[0061] The filling protection layer 200 is formed with the same inner diameter as the inner diameter of the strength ring 100, and forms a bushing.

[0062] In two embodiments, please refer to Figures 1-4 As shown, the scheme adopted is that a blocking ring 1001 is welded on a set of strength rings 100 located in the second to-be-repaired pipe 2 and farthest from the connecting joint 3;

[0063] The inner diameter of the blocking ring 1001 is greater than the inner diameter of the strength ring 100, facilitating the installation and positioning of the second inner lining pipe 120.

[0064] In two embodiments, please refer to Figures 1-4 and Figure 5 As shown, the scheme adopted is that the first inner lining pipe 110 and the second inner lining pipe 120 are connected through flanges; the flange of the first inner lining pipe 110 is provided with a runway-shaped connecting hole 131; and the flange of the second inner lining pipe 120 is provided with a corresponding circular threaded connecting hole 132.

[0065] In the first embodiment, as shown in Figure 1 , 2 The flange disc 130 of the first inner lining pipe 110 and the second inner lining pipe 120 is constructed on the inner diameter of each, and the advantage of this design is that the processing and manufacturing are more convenient, and it is suitable for larger-scale inner lining repair projects.

[0066] In the second embodiment, please refer to Figure 1 , 2 The flange disc of the first inner lining pipe 110 is constructed on the inner diameter of itself; and the flange disc 130 of the second inner lining pipe 120 is constructed on the outer diameter of one side, so that the inner diameter of the whole maintenance configuration is more smooth, and the flow loss is minimized.

[0067] In the specific implementation, please refer to Figures 1-5 As shown, after the first inner lining pipe 110 and the second inner lining pipe 120 are connected, a gap area 140 is formed between the inner diameter of the first inner lining pipe 110 and the outer diameter of the second inner lining pipe 120; the sealing component 20 is a polyisobutylene rubber pad, and the polyisobutylene rubber pad is provided with an epoxy coal tar coating on both sides.

[0068] In summary, the pipeline damage and leakage problem is effectively solved, the function of the repaired pipeline is restored well, the operation is stable, and the water supply safety and quality are significantly improved.

[0069] Obviously, the above embodiments are merely example for clearly illustrating but not limitation to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and can not be enumerated. The obvious changes or variations derived from the above description are still within the protection scope of the present application.

Claims

1. A trenchless in-place lining rehabilitation structure for an underground pipe network, characterized in that, The utility model relates to a repair sleeve structure (10) which is arranged at the joint seam (3) of a first pipe (1) to be repaired and a second pipe (2) to be repaired. The center line of the repair sleeve structure (10) is on the same straight line as the center line of the first pipe (1) to be repaired. The center line of the first pipe (1) to be repaired and the center line of the second pipe (2) to be repaired form a height difference (h). The repair sleeve structure (10) is composed of a plurality of strength rings (100), and a filling protective layer (200) is arranged between adjacent strength rings (100). A first inner liner pipe (110) is detachably connected with a second inner liner pipe (120), and the second inner liner pipe (120) can pass through the repair sleeve structure (10) and be located in the second pipe (2) to be repaired. The first inner liner pipe (110) and the second inner liner pipe (120) are high-density polyethylene pipes. A sealing member (20) is filled between the first inner liner pipe (110), the second inner liner pipe (120) and the repair sleeve structure (10). The first pipe (1) to be repaired and the second pipe (2) to be repaired are both welded with the strength rings (100) adjacent to the joint seam (3). The joint seam (3) is supplemented with a repair welding corner (31).

2. The underground pipe network trenchless rehabilitation structure of claim 1, wherein, The filling protective layer (200) is composed of a mud mortar solidification. The filling protective layer (200) has the same inner diameter as the strength rings (100).

3. The underground pipe network trenchless rehabilitation structure of claim 2, wherein, A blocking ring (1001) is welded on a group of strength rings (100) located in the second pipe (2) to be repaired and farthest from the joint seam (3). The inner diameter of the blocking ring (1001) is larger than the inner diameter of the strength rings (100).

4. The underground pipe network trenchless rehabilitation structure of claim 3, wherein, The first inner liner pipe (110) and the second inner liner pipe (120) are connected through flanges. The flange of the first inner liner pipe (110) is provided with runway-shaped connecting holes (131).

5. The underground pipe network trenchless rehabilitation structure of claim 4, wherein, The flange of the second inner liner pipe (120) is provided with corresponding circular threaded connecting holes (132). The flanges (130) of the first inner liner pipe (110) and the second inner liner pipe (120) are constructed on the respective inner diameters. The flange of the first inner liner pipe (110) is constructed on the inner diameter thereof.

6. The underground pipe network trenchless rehabilitation structure of claim 5, wherein, The flange (130) of the second inner liner pipe (120) is constructed on the outer diameter of one side.

7. The underground pipe network trenchless rehabilitation structure of claim 5, wherein, After the first inner liner pipe (110) and the second inner liner pipe (120) are connected, a gap area (140) is formed between the inner diameter of the first inner liner pipe (110) and the outer diameter of the second inner liner pipe (120). The sealing member (20) is a polyisobutylene rubber pad, and both sides of the polyisobutylene rubber pad are provided with epoxy coal tar coating layers.

8. The underground pipe network trenchless rehabilitation structure of claim 5, wherein, ​ ​

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