CN220957374U

CN220957374U - PCCP pipeline maintenance frock

Info

Publication number: CN220957374U
Application number: CN202323199624.4U
Authority: CN
Inventors: 胡玉超; 庞猛; 张露译
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-11-27
Filing date: 2023-11-27
Publication date: 2024-05-14
Anticipated expiration: 2033-11-27

Abstract

The utility model aims to provide a PCCP pipeline maintenance tool, which comprises a first covering piece, a second covering piece and sealing gaskets arranged at the edges of the inner wall surfaces of the first covering piece and the second covering piece, wherein a plugging area capable of covering the damaged part of the outer wall of a PCCP pipe is formed on the inner side of an inner sealing ring in a closing way, and at least two pressure sealing assemblies are surrounded on the outer side of the circumference of the inner sealing ring; wherein, after the pressure sealing component is filled with high-pressure gas, the pressure sealing component forms a pneumatic seal on the damaged part of the outer wall of the PCCP pipe. The utility model relates to the technical field of water conservancy pipeline maintenance, and discloses an inflatable sealing ring which is attached to a PCCP pipeline without holes, so that leakage is further prevented. The high pressure of the outer sealing part can be propped against the second pressure sealing piece to prevent and eliminate the impact pressure caused by the leakage of water liquid when the inner sealing ring leaks.

Description

PCCP pipeline maintenance frock

Technical Field

The utility model relates to the technical field of water conservancy pipeline maintenance, in particular to a PCCP pipeline maintenance tool.

Background

In the prior art, the repair method for the damaged part of the PCCP pipeline adopts a half joint fixedly connected on the pipeline and adopts a covered repair method for the damaged part. In order to improve the maintenance effect, sealing strips are arranged at the edge of the inner wall of the half joint to be attached to the pipeline, so that the sealing effect is improved. The structure also gradually finds that the defects exist in the using process. For example, two half arc-shaped half joints are fixed through bolts, and although sealing strips on the inner wall are attached to a PCCP pipeline, certain holes still exist between the sealing strips and the half joints due to extrusion, so that water liquid can leak outwards from the gaps through the side surfaces of the axial sealing strips, ageing of the sealing strips is easy to accelerate in the long-term use process, and the risk of sealing strip failure exists.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a PCCP pipeline maintenance tool, which solves the problems that a sealing strip is extruded to form a gap in the existing PCCP pipeline maintenance process to cause incomplete sealing and still leak.

In order to achieve the above purpose, the present utility model is realized by the following technical scheme: the PCCP pipeline maintenance tool comprises a first covering part, a second covering part and a sealing gasket arranged at the edges of the inner wall surfaces of the first covering part and the second covering part, wherein the first covering part and the second covering part are integrally wrapped on the outer wall of a PCCP pipe through a connecting piece in a surrounding mode, an inner sealing ring is annularly arranged in the middle of the inner wall surface of the second covering part, a sealing area capable of covering the damaged part of the outer wall of the PCCP pipe is formed on the inner side of the inner sealing ring in a combined mode, and at least two pressure sealing assemblies are arranged around the periphery of the inner sealing ring to the outer side;

Wherein, after the pressure sealing component is filled with high-pressure gas, the pressure sealing component forms a pneumatic seal on the damaged part of the outer wall of the PCCP pipe.

Preferably, the pressure sealing assembly is annular without any folding angle and surrounds the outer side of the inner sealing ring.

Preferably, the pressure sealing assembly is tightly attached to the inner wall surface of the second covering member.

Preferably, the pressure sealing assembly comprises a second pressure sealing element and a first pressure sealing element arranged on the outer side of the second pressure sealing element, a gap is reserved between the first pressure sealing element and the second pressure sealing element, and the circumferential distance between the inner wall of the first pressure sealing element and the circumferential distance between the outer wall of the second pressure sealing element are equal.

Preferably, the first pressure sealing element and the second pressure sealing element comprise inflatable sealing rings, the inflatable ends of the inflatable sealing rings penetrate through the second covering element, and the penetrating parts are fixedly connected with the second covering element in a sealing mode.

Preferably, the gap forms an outer sealing portion when the first pressure seal member and the second pressure seal member are attached to the pipe wall of the PCCP pipe, and the outer wall surface of the second cover member is provided with a pipe communicating with the outer sealing portion.

Preferably, the inner sealing rings are at least two groups.

Preferably, the wall plate of the first covering member is provided with a hollowed-out portion.

Advantageous effects

By using the PCCP pipeline maintenance tool provided by the utility model, the multiple sealing structures are arranged on the inner sides of the sealing gaskets of the inner walls of the traditional half joints to seal the damaged parts of the PCCP pipeline. One uses a double inner sealing ring to form a sealing area to cover the damaged part of the PCCP pipe to form a first resealing. And the inflatable first pressure sealing piece and the second pressure sealing piece are used for forming second heavy sealing, the inflated inflatable sealing ring is inflated by internal high-pressure gas to be attached to the PCCP pipeline without holes, and meanwhile, an inflatable high-pressure outer sealing part can be formed between the first pressure sealing piece and the second pressure sealing piece to form a high-pressure inflatable belt, so that third heavy sealing is realized. And the inflatable sealing ring is attached to the PCCP pipeline without holes, so that leakage is further prevented. The high pressure of the outer sealing part can be propped against the second pressure sealing piece to prevent and eliminate the impact pressure caused by the leakage of water liquid when the inner sealing ring leaks. The multiple seals greatly improve the sealing effect on the damaged part of the outer wall of the PCCP pipeline, so that the compression resistance and the reliability of the maintenance tool are obviously improved, and the sealing reliability is better.

Drawings

FIG. 1 is a schematic diagram of a three-dimensional structure of a maintenance tool according to the present utility model;

FIG. 2 is a front view of the maintenance tool of the present utility model;

FIG. 3 is a schematic view of the inner sidewall structure of the second cover according to the present utility model;

FIG. 4A is a schematic diagram of the structure of the first and second elastic seals of the present utility model before deformation;

FIG. 4B is a schematic view of the deformed first and second elastic sealing members according to the present utility model;

FIG. 5A is a schematic view of a structure for plugging a leak hole after the assembly of the maintenance tool of the present utility model;

FIG. 5B is a schematic view of the present utility model showing the drainage state after the assembly of the maintenance tool;

FIG. 5C is a schematic view of the structure of the assembled outer seal of the repair fixture of the present utility model;

fig. 6 is a perspective view of the first and second covers of the present utility model assembled to a PCCP pipe.

Description of the symbols in the drawings

1. The sealing device comprises a first covering part, 2, a second covering part, 3, a hollowed part, 4, a sealing gasket, 5, a first pressure sealing piece, 6, a second pressure sealing piece, 7, an outer sealing part, 8, an inner sealing ring, 9, a plugging area, 10, a pipeline, 11 and a PCCP pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. Various modifications can be made to the embodiments as long as the effects of the present utility model can be exerted.

The components in the present case are sequentially connected by a person skilled in the art, and specific connection and operation sequence should be referred to the following working principle, and the detailed connection means thereof are known in the art, and the following working principle and process are mainly described.

The PCCP pipe repair fixture of the present embodiment is described with reference to fig. 1 to 6.

As shown in fig. 1 and 6, the tool comprises a first covering part 1, a second covering part 2 and a sealing gasket 4 arranged at the edges of the inner wall surfaces of the first covering part 1 and the second covering part 2, wherein the first covering part 1 and the second covering part 2 are enclosed into a whole through a connecting piece and are wrapped on the outer wall of a PCCP pipe 11. In the present embodiment, the first cover 1 and the second cover 2 are half joints.

As shown in fig. 2-3, the middle part of the inner wall surface of the second covering member 2 is provided with at least two groups of inner sealing rings 8 in a ring shape. The inner side of the inner sealing ring 8 is provided with a sealing area 9 which can cover the damaged part of the outer wall of the PCCP pipe 11. The inner sealing ring 8 is an endless annular sealing ring, and a plugging area 9 formed by closing the inner side of the inner sealing ring 8 is required to completely cover the damaged part of the PCCP pipe 11. When the first covering piece 1 and the second covering piece 2 are fixed on the outer wall of the PCCP pipe 11 through connecting pieces, the inner sealing ring 8 is extruded to deform and is tightly attached to the wall surface of the PCCP pipe 11, so that sealing is formed, and the purpose of primarily repairing the damage of the outer wall of the PCCP pipe 11 is achieved.

At least two pressure sealing assemblies are surrounded on the circumferential outer side of the inner sealing ring 8; wherein, after the pressure sealing assembly is filled with high-pressure gas, the pressure sealing is formed at the breakage part of the outer wall of the PCCP pipe 11. In order to improve the repairing sealing effect, an air pressure seal is additionally arranged on the outer side of the inner sealing ring 8, and multiple seals are formed on the damaged part of the PCCP pipe 11.

The pressure seal assembly is annular and surrounds the outer side of the inner seal ring 8 without any folding angle. Meanwhile, the pressure seal assembly is tightly adhered and fixed to the inner wall surface of the second covering member 2.

In one embodiment, the pressure sealing assembly comprises a second pressure sealing member 6 and a first pressure sealing member 5 arranged outside the second pressure sealing member 6, a gap is reserved between the first pressure sealing member 5 and the second pressure sealing member 6, and the distance between the circumference of the inner wall of the first pressure sealing member 5 and the circumference of the outer wall of the second pressure sealing member 6 is equal. Due to the equidistant arrangement between the first pressure sealing element 5 and the second pressure sealing element 6, the pressure values at all positions between the outer sealing parts 7 are ensured to be equal, and the possibility of air pressure leakage is avoided.

The first pressure sealing piece 5 and the second pressure sealing piece 6 comprise inflatable sealing rings, the inflatable ends of the inflatable sealing rings penetrate through the second covering piece 2, and the penetrating parts are fixedly connected with the second covering piece 2 in a sealing way.

The gap forms an outer seal 7 when the first and second pressure seals 5, 6 are bonded to the wall of the PCCP pipe, and the outer wall surface of the second cover 2 is provided with a pipe 10 communicating with the outer seal 7.

The outer seal 7 is a high pressure chamber and the pipe 10 is fitted with a valve (not shown). After the first pressure sealing element 5 and the second pressure sealing element 6 are filled with gas to form a seal, a valve on the pipeline 10 is opened, the other end of the valve is connected with a high-pressure gas generator, and after the outer sealing part 7 is filled with a sufficient amount of gas, the valve is closed, so that the outer sealing part 7 forms a high-pressure sealing chamber.

In another embodiment, the wall plate of the first cover 1 is provided with a hollowed-out portion 3. The design of fretwork portion 3 can reduce the material volume of first covering piece 1, and then reduces the input of cost, and can make first covering piece 1 weight-reducing, be convenient for transportation and installation.

In operation, as shown in fig. 4A and 4B, in the state where the first and second pressure seals 5 and 6 are not inflated, the first and second pressure seals 5 and 6 are not attached to the outer wall surface of the PCCP pipe 11 with a certain interval.

As shown in fig. 5A, when the first cover 1 and the second cover 2 are engaged with the PCCP pipe 11, the water leaking from the broken portion of the PCCP pipe 11 is discharged. As shown in fig. 5B, the water after complete fastening is confined in the plugging area 9, and the residual water in the inner seal ring 8 flows out through the space between the first and second pressure seals 5 and 6 and the outer wall surface of the PCCP pipe 11, so that the residual water in the outer seal portion 7 can be emptied. As shown in fig. 5C, the first and second pressure seals 5 and 6 and the outer seal portion 7 are filled with high pressure gas to form a gas pressure seal, and the first and second pressure seals 5 and 6 are closely attached to the outer wall surface of the PCCP pipe 11 to form a gas pressure seal.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. PCCP pipeline maintenance frock, frock includes first covering part (1), second covering part (2) and locates sealed pad (4) of first covering part (1) and second covering part (2) internal face edge, first covering part (1) and second covering part (2) enclose integrative parcel in PCCP pipe (11) outer wall, its characterized in that through the connecting piece: an inner sealing ring (8) is annularly arranged in the middle of the inner wall surface of the second covering piece (2), a plugging area (9) capable of covering the damaged part of the outer wall of the PCCP pipe (11) is formed on the inner side of the inner sealing ring (8), and at least two pressure sealing assemblies are surrounded on the outer side of the circumference of the inner sealing ring (8);

wherein, after the pressure sealing component is filled with high-pressure gas, the pressure sealing component forms a pneumatic seal on the damaged part of the outer wall of the PCCP pipe (11).

2. The PCCP pipe repair fixture of claim 1, wherein: the pressure sealing component is annular without a folding angle and surrounds the outer side of the inner sealing ring (8).

3. The PCCP pipe repair fixture of claim 2, wherein: the pressure sealing assembly is tightly attached to the inner wall surface of the second covering piece (2).

4. A PCCP pipe repair fixture according to any one of claims 1-3, characterized in that: the pressure sealing assembly comprises a second pressure sealing piece (6) and a first pressure sealing piece (5) arranged on the outer side of the second pressure sealing piece (6), a gap is reserved between the first pressure sealing piece (5) and the second pressure sealing piece (6), and the distance between the circumference of the inner wall of the first pressure sealing piece (5) and the circumference of the outer wall of the second pressure sealing piece (6) is equal.

5. The PCCP pipe repair fixture of claim 4, wherein: the first pressure sealing piece (5) and the second pressure sealing piece (6) comprise inflatable sealing rings, the inflatable ends of the inflatable sealing rings penetrate through the second covering piece (2), and the penetrating parts are fixedly connected with the second covering piece (2) in a sealing mode.

6. The PCCP pipe repair fixture of claim 4, wherein: the gap forms an outer sealing part (7) when the first pressure sealing piece (5) and the second pressure sealing piece (6) are attached to the pipe wall of the PCCP pipe, and the outer wall surface of the second covering piece (2) is provided with a pipeline (10) communicated with the outer sealing part (7).

7. The PCCP pipe repair fixture of claim 1, wherein: the number of the inner sealing rings (8) is at least two.

8. The PCCP pipe repair fixture of claim 1, wherein: the wallboard of the first covering piece (1) is provided with a hollowed-out part (3).