Port sealing device for underground pipeline non-excavation repair construction

Abstract

The utility model provides a port sealing device for underground pipeline non-excavation repair construction, which comprises a main pipeline, the main pipeline is an original pipeline to be repaired, a first sealing pipe is sleeved on the main pipeline, the top of the first sealing pipe is in flange connection with a connecting disc, and the connecting disc is in flange connection with the main pipeline. A sealing assembly used for sealing the position between the main pipeline and the lining hose is arranged at the top of the connecting disc and comprises a second sealing pipe arranged on one side of the connecting disc, a sealing cap is arranged at the end of the second sealing pipe, and a cold shrinkage pipe is installed on the inner wall of the second sealing pipe. The port sealing device for non-excavation repair construction of the underground pipeline solves the problem that leakage occurs between a lining hose and an original pipeline due to the fact that the port sealing performance is poor due to the fact that an existing repaired pipeline lacks further treatment on the sealing performance between the port of the cured lining hose and the port of the original pipeline. And the repair service life of the pipeline is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline repair construction, in particular to a port sealing device for trenchless repair construction of underground pipelines. Background Technique

[0002] The renewal and repair of underground pipelines all adopt the traditional method of first excavating and then re-burying pipelines. Its advantages are that the pipeline defects are treated more thoroughly and the construction quality is easier to control. However, due to the complexity of underground pipelines and the large number of urban roads, the traditional excavation repair method will cause impacts on residents, traffic, and the environment. Currently, common trenchless pipeline repair techniques include ultraviolet curing repair method, trenchless spiral winding repair method, hot inversion CIPP repair, etc. Among them, the ultraviolet curing repair method is widely used due to its high efficiency and high quality.

[0003] The ultraviolet curing repair technology is to drag a resin-lined hose into the original pipeline, then install collars at both ends of the lined hose and inflate it into the pipe to expand, so that the lined hose closely adheres to the original pipeline, forming a composite lined pipe with the original pipeline as the outer membrane and the lined hose as the inner membrane. Then, under the irradiation of ultraviolet light, the resin is cured to form a pipeline overall repair technology with a certain strength. Finally, the repaired pipeline is obtained. However, during the construction process of the ultraviolet curing repair method, the following problems often occur, that is, the repaired pipeline lacks further treatment of the sealing performance between the cured lined hose port and the original pipeline port, which will result in insufficient port sealing performance, leading to leakage problems between the lined hose and the original pipeline, and reducing the service life of the pipeline repair.

[0004] Therefore, it is necessary to provide a port sealing device for trenchless repair construction of underground pipelines to solve the above technical problems. Content of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide a port sealing device for trenchless repair construction of underground pipelines to solve the problems raised in the above background technique.

[0006] The port sealing device for trenchless repair construction of underground pipelines provided by the utility model includes a main pipeline, the main pipeline is the original pipeline to be repaired, a first sealing pipe is sleeved and installed on the main pipeline, a connection plate is flange-connected to the top of the first sealing pipe, and a sealing component for sealing between the main pipeline and the lined hose is arranged on the top of the connection plate.

[0007] Preferably, the sealing component includes a second sealing pipe arranged on one side of the connection plate, a sealing cap is arranged at the end of the second sealing pipe, a cold shrinkable tube is installed on the inner wall of the second sealing pipe, and a support member is arranged on the inner wall of the cold shrinkable tube.

[0008] Preferably, the cold-shrinkable tube is a component made of an ethylene-propylene rubber material, and the support member is used to support the cold-shrinkable tube.

[0009] Preferably, one end of the support member is provided with a starting end, and the end of the support member far from the starting end is provided with a terminal end. By pulling the terminal end, the support member can be withdrawn to release the support for the cold-shrinkable tube.

[0010] Preferably, a sealing ring is sleeved and installed on the outer side of the main pipeline, and a sealing ring is arranged on the inner wall of the sealing ring.

[0011] Preferably, a sealing strip is arranged on the outer side of the sealing ring, and the number of the sealing strips is set to two.

[0012] Preferably, a sealing groove for cooperating with the sealing strip is formed inside the first sealing tube.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] For the port sealing device for trenchless repair construction of underground pipelines, by pulling the terminal end to counterclockwise withdraw the spiral support member inside the cold-shrinkable tube, the support for the cold-shrinkable tube is released, so that the cold-shrinkable tube is pressed against the lining hose on the outer side of the main pipeline, and then the first sealing tube and the second sealing tube are connected and fixed through the connecting plate, thereby achieving the effect of sealing the port of the main pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic structural diagram of a preferred embodiment of the port sealing device for trenchless repair construction of underground pipelines provided by the present utility model;

[0016] Figure 2 FIG. is a schematic structural diagram of the sealing assembly shown in the present utility model;

[0017] Figure 3 FIG. is a schematic structural diagram of the cold-shrinkable tube and the support member shown in the present utility model;

[0018] Figure 4 FIG. is a schematic internal structure diagram of the first sealing tube shown in the present utility model.

[0019] Reference numerals in the figures: 1, main pipeline; 2, first sealing tube; 3, connecting plate; 4, sealing assembly; 41, second sealing tube; 42, sealing cap; 43, cold-shrinkable tube; 44, support member; 5, starting end; 6, terminal end; 7, sealing ring; 8, sealing strip; 9, sealing groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 a limitation of the present utility model. In addition, in the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0023] In the description of the embodiments of the present utility model, it should also be noted that unless otherwise clearly specified and limited, if the terms "set", "installed", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] Please refer to Figures 1-4 , a port sealing device for trenchless repair construction of underground pipelines, including a main pipeline 1, and the main pipeline 1 is the original pipeline to be repaired.

[0025] In the specific implementation process, as Figure 1 , Figure 2 , Figure 3 and Figure 4 show, a first sealing pipe 2 is sleeved and installed on the main pipeline 1, a connecting plate 3 is flange-connected to the top of the first sealing pipe 2, and a sealing assembly 4 for sealing between the main pipeline 1 and the lining hose is arranged on the top of the connecting plate 3.

[0026] The sealing assembly 4 includes a second sealing tube 41 disposed on one side of the connecting disc 3. A sealing cap 42 is provided at the end of the second sealing tube 41, a cold-shrinkable tube 43 is installed on the inner wall of the second sealing tube 41, and a support member 44 is provided on the inner wall of the cold-shrinkable tube 43.

[0027] The cold-shrinkable tube 43 is a component made of ethylene propylene rubber material, and the support member 44 is used to support the cold-shrinkable tube 43.

[0028] One end of the support member 44 is provided with a starting end 5, and the end of the support member 44 far from the starting end 5 is provided with an ending end 6. By pulling the ending end 6, the support member 44 can be withdrawn to release the support for the cold-shrinkable tube 43.

[0029] It should be noted that: after the inner lining hose is placed into the main pipeline 1 to be repaired, the end of the inner lining hose is turned over and sleeved on the outside of the main pipeline 1. The first sealing tube 2 and the second sealing tube 41 are sequentially sleeved on the main pipeline 1 to cover the inner lining hose outside the main pipeline 1. The cold-shrinkable tube 43 is made of ethylene propylene rubber, has certain elasticity, good low-temperature resistance, resilience and physical and mechanical properties, and also has the functions of wear resistance and waterproof sealing. The cold-shrinkable tube 43 is injection molded in the factory, then expanded in diameter, and internally lined with a support member 44 to support the cold-shrinkable tube 43. By pulling the ending end 6 to counterclockwise withdraw the spiral support member 44 inside the cold-shrinkable tube 43, the support for the cold-shrinkable tube 43 is released, so that the cold-shrinkable tube 43 is pressed against the inner lining hose outside the main pipeline 1, and then the first sealing tube 2 and the second sealing tube 41 are connected and fixed through the connecting disc 3, thereby achieving the effect of sealing the port of the main pipeline 1.

[0030] A sealing ring 7 is sleeved and installed on the outside of the main pipeline 1, and a sealing ring is provided on the inner wall of the sealing ring 7.

[0031] A sealing strip 8 is provided on the outside of the sealing ring 7, and the number of the sealing strips 8 is set to two.

[0032] A sealing groove 9 for cooperating with the sealing strip 8 is provided inside the first sealing tube 2.

[0033] It should be noted that: a sealing ring 7 is provided inside the first sealing tube 2. The sealing ring on the inner wall of the sealing ring 7 is in close contact with the inner lining hose outside the main pipeline 1 to seal the gap between the inner wall of the first sealing tube 2 and the main pipeline 1 and the outside of the inner lining hose. The sealing strip 8 on the outside of the sealing ring 7 is in close contact with the sealing groove 9 to seal the gap between the outside of the sealing ring 7 and the inner wall of the first sealing tube 2, thereby greatly improving the sealing effect.

[0034] The working principle of a port sealing device for trenchless repair construction of underground pipelines provided by the present utility model is as follows:

[0035] In use, after placing the inner lining hose into the main pipe 1 to be repaired, the end of the inner lining hose is turned over and sleeved on the outside of the main pipe 1. The first sealing pipe 2 and the second sealing pipe 41 are sequentially sleeved on the main pipe 1 to cover the inner lining hose outside the main pipe 1. The cold shrinkable pipe 43 is made of ethylene propylene rubber, has certain elasticity, good low temperature resistance, resilience and physical and mechanical properties, and at the same time has the functions of wear resistance and waterproof sealing. The cold shrinkable pipe 43 is injection molded in the factory, then expanded in diameter, and internally lined with a support member 44 to support the cold shrinkable pipe 43. By pulling the end 6 to counterclockwise draw out the helical support member 44 inside the cold shrinkable pipe 43, the support for the cold shrinkable pipe 43 is released, so that the cold shrinkable pipe 43 is pressed against the inner lining hose outside the main pipe 1. Then, the first sealing pipe 2 and the second sealing pipe 41 are connected and fixed through the connection plate 3, thus achieving the effect of sealing the port of the main pipe 1.

[0036] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A port sealing device for trenchless repair construction of underground pipelines, characterized in that, The invention comprises a main pipeline (1), wherein the main pipeline (1) is an original pipeline to be repaired, a first sealing tube (2) is sleeved and installed on the main pipeline (1), a connecting plate (3) is connected to the top flange of the first sealing tube (2), and a sealing component (4) for sealing between the main pipeline (1) and the lining hose is arranged on the top of the connecting plate (3).

2. The port sealing device for trenchless repair construction of underground pipelines according to claim 1, characterized in that, The sealing assembly (4) comprises a second sealing tube (41) arranged on one side of the connecting plate (3), a sealing cap (42) being arranged at the end of the second sealing tube (41), a shrink tube (43) being installed on the inner wall of the second sealing tube (41), and a support member (44) being arranged on the inner wall of the shrink tube (43).

3. The port sealing device for trenchless repair construction of underground pipelines according to claim 2, characterized in that, The cold shrink tube (43) is a component made of ethylene propylene rubber material, and the support member (44) is used to support the cold shrink tube (43).

4. The port sealing device for trenchless repair construction of underground pipelines according to claim 2, characterized in that, One end of the support member (44) is provided with an open end (5), and the end of the support member (44) away from the open end (5) is provided with a terminal end (6); the support member (44) can be pulled out by pulling the terminal end (6) to release the support for the shrink tube (43).

5. The port sealing device for trenchless repair construction of underground pipelines according to claim 1, characterized in that, A sealing ring (7) is sleeved and installed on the outer side of the main pipeline (1), and a sealing ring is provided on the inner wall of the sealing ring (7).

6. The port sealing device for trenchless repair construction of underground pipelines according to claim 5, characterized in that, A sealing strip (8) is provided on the outside of the sealing ring (7), and the number of the sealing strips (8) is set to two.

7. The port sealing device for trenchless repair construction of underground pipelines according to claim 6, characterized in that, A sealing groove (9) for use with the sealing strip (8) is provided inside the first sealing tube (2).

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