Auxiliary device for repairing leakage of pipeline and flange under pressure

Abstract

The utility model relates to an emergency repair pipeline and flange leakage under-pressure repair device, in particular to an under-pressure pipeline and flange leakage repair auxiliary device which comprises clamp single bodies, lug plates used for connection are arranged at the two ends of each clamp single body, and a plurality of clamp single bodies are connected to form a circular clamp wrapping the outer wall of an under-pressure pipeline. A forming groove is formed between the circular clamp and the pipeline under pressure, and a through hole in the outer wall of the circular clamp is at least connected with a pressure release valve and a material injection pipe. According to the auxiliary device for repairing the under-pressure pipeline, when a fluid medium accidentally leaks in the pipeline, the clamp is fixedly connected to the outer wall of the pipeline in a sleeving mode, a sealing cavity is formed between the clamp and the pipe wall, and the leakage position is fixed. And then the sealant is injected into the sealing cavity, after the sealant is solidified, a new sealing cavity is formed through the fixture and sealant filling, pressure balance is achieved, production and transportation stopping is not needed, and the leakage problem of pipeline and flange repairing under pressure is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency repair of pressurized pipelines and flange repair equipment, in particular to a pressurized pipeline and flange leakage repair auxiliary device. Background Art

[0002] At present, pipelines and flange equipment for conveying fluid media in petroleum, chemical industry, ports, mining, municipal water supply and heating are mostly laid overhead. When pipelines are laid in this way to convey fluid media, the environment in which the pipelines are located is relatively complex and changeable. They are subject to different degrees of stress changes and corrosion caused by the environment, humidity and even natural disasters, resulting in sudden fluid leakage from time to time.

[0003] Conventional emergency repairs usually involve shutting down the equipment, then performing pressure relief, and then repairing the leak after the leak is at normal pressure. During this process, the fluid medium will cause environmental pollution to varying degrees, or contaminate the medium, and delay the normal use of the equipment. Utility Model Content

[0004] The utility model aims to provide a pressure pipeline and flange leakage repair auxiliary device to solve the problems raised in the above background technology.

[0005] It is mainly based on the sudden leakage of fluid media when pipelines and equipment are transporting fluid media. Without shutting down the equipment and pipelines to transport fluid media normally, other auxiliary equipment is used to fill the damaged position of the pipeline with sealants. Different models are used according to different types of fluid media, leakage degrees and locations to form a new sealing cavity, inject sealants through the through holes, verify the sealing and plugging effect through pressure relief, and form a new sealing cavity through fixtures and sealants to achieve pressure balance. There is no need to stop production and transportation, and solve the leakage problems of pipelines and flanges under pressure repair.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressurized pipeline and flange leakage repair auxiliary device, including a fixture unit, both ends of the fixture unit are provided with ear plates for connection, a plurality of the fixture units are connected to form a circular fixture wrapped around the outer wall of the pressurized pipeline, a molding groove is formed between the circular fixture and the pressurized pipeline, the outer wall surface of the fixture unit is provided with a through hole connected to the molding groove, and the through hole on the outer wall of the circular fixture is connected to at least one pressure relief valve and one injection pipe.

[0007] Preferably, dovetail grooves are provided on both sides of the inner wall of the clamp unit, and sealing members are arranged in the dovetail grooves.

[0008] Preferably, the sealing element is made of a metal material with a smooth surface.

[0009] Preferably, convex ridges and recessed grooves are respectively provided on the end surfaces at both ends of the clamping unit, and the convex ridges and recessed grooves on the two clamping units can be plugged into each other.

[0010] Preferably, two adjacent ear plates are connected by bolts.

[0011] Preferably, a spring is sleeved on the outer wall of the bolt, and one end of the spring presses against the ear plate.

[0012] Preferably, a one-way valve is provided at the end of the injection pipe.

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

[0014] This pressurized pipeline repair auxiliary device, when the fluid medium leaks accidentally in the pipeline, the clamp is fixed on the outer wall of the pipeline, and a sealed cavity is formed between the clamp and the pipe wall to fix the leakage position. The sealant is pressurized by a sealant syringe, and the pressure is greater than the pressure in the fluid pipeline. Then the sealant is injected into the sealing cavity, and then the pressure in the sealing cavity is adjusted through the pressure relief valve to make the pressure in the sealing cavity consistent with that in the pipeline. After the sealant solidifies, a new sealing cavity is formed by filling the clamp and the sealant to achieve pressure balance, without stopping production and transportation, to solve the leakage problems of pressurized repair pipelines and flanges. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of a clamp wrapped around the outside of a pipe in a preferred embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of a structure in which the clamps are assembled into a circle in a preferred embodiment of the utility model;

[0017] Figure 3 This is a structural schematic diagram of the end surface of the fixture in a preferred embodiment of the utility model;

[0018] Figure 4 This is a schematic structural diagram of a clamping unit in a preferred embodiment of the present invention;

[0019] Figure 5 This is a structural schematic diagram of the inner side of a clamping unit in a preferred embodiment of the utility model;

[0020] Figure 6 It is a schematic structural diagram of a sealing member in a preferred embodiment of the utility model.

[0021] In the figure: 1. a fixture unit, 2. an ear plate, 3. a pressure relief valve, 4. an injection pipe, 5. a through hole, 6. a molding groove, 7. a sealing element, 8. a convex ridge, 9. a sink groove, 10. a dovetail groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-6 , the utility model provides a technical solution:

[0024] An auxiliary device for repairing leakage of a pressurized pipeline and flange includes a clamping unit 1, and ear plates 2 for connection are arranged at both ends of the clamping unit 1. Four clamping units 1 are connected to form a circular clamp wrapped around the outer wall of the pressurized pipeline. Two adjacent ear plates 2 are connected to fix two adjacent clamping units 1 together.

[0025] Several faces of the clamp body 1 are U-shaped, a forming groove 6 is formed between the circular clamp and the pressurized pipe, and a sealing cavity is formed between the forming groove 6 and the pipe wall.

[0026] The outer wall surface of the fixture unit 1 is provided with a through hole 5 connected to the molding groove 6, that is, the through hole 5 is connected to the sealing cavity. The through hole 5 on the outer wall of the circular fixture is connected to at least one pressure relief valve 3 and an injection pipe 4. The remaining through holes 5 can be connected to more pressure relief valves 3 and injection pipes 4, or closed. The sealant is injected into the sealing cavity through the injection pipe 4, and the pressure relief valve 3 is used for pressure relief and demoulding.

[0027] The injection pipe 4 is connected to the sealant injection mechanism, and a one-way valve is arranged between the injection pipe 4 and the through hole.

[0028] Dovetail grooves 10 are provided on both sides of the inner wall of the clamp body 1, and seals 7 are placed in the dovetail grooves 10. The seals 7 are made of metal material with a smooth surface, and the use of metal seals can prevent the sealant from sticking.

[0029] The end surfaces of both ends of the clamping unit 1 are respectively provided with ridges 8 and recesses 9 , and the ridges 8 and recesses 9 on the two clamping units 1 can be plugged into each other to improve the sealing effect of the connection between the two clamping units 1 .

[0030] Two adjacent ear plates are connected by bolts. A spring is sleeved on the outer wall of the bolt, and one end of the spring is pressed against the ear plate 2.

[0031] Handles for demoulding and pulling are arranged on both sides of the clamping unit 1. After the sealant solidifies, the screw rod is disassembled and the handles are pulled to facilitate the removal of the clamping unit 1.

[0032] When the fluid medium leaks accidentally in the pipeline, the clamp is fixed on the outer wall of the pipeline to form a sealed cavity between the clamp and the pipe wall to fix the leakage position. The sealant is pressurized with a sealant syringe, and the pressure is greater than the pressure in the fluid pipeline. Then the sealant is injected into the sealed cavity, and then the pressure in the sealed cavity is adjusted through the pressure relief valve to make the pressure in the pipeline consistent. After the sealant solidifies, a new sealed cavity is formed by filling the clamp and sealant to achieve pressure balance. There is no need to stop production and transportation, and the leakage problem of pipelines and flanges under pressure repair is solved.

[0033] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0034] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for repairing leakage of pressurized pipelines and flanges. Features: The invention comprises a fixture unit (1), both ends of which are provided with ear plates (2) for connection, and a plurality of the fixture units (1) are connected to form a circular fixture wrapped around the outer wall of a pressurized pipeline, a molding groove (6) is formed between the circular fixture and the pressurized pipeline, a through hole (5) is provided on the outer wall surface of the fixture unit (1) and is connected to the molding groove (6), and the through hole (5) on the outer wall of the circular fixture is connected to at least one pressure relief valve (3) and one injection pipe (4).

2. A pressurized pipeline and flange leakage repair auxiliary device according to claim 1, Features: Dovetail grooves (10) are provided on both sides of the inner wall of the clamp unit (1), and sealing components (7) are arranged in the dovetail grooves (10).

3. A pressurized pipeline and flange leakage repair auxiliary device according to claim 2, Features: The sealing member (7) is made of a metal material with a smooth surface.

4. A pressurized pipeline and flange leakage repair auxiliary device according to claim 1, Features: The end surfaces of both ends of the clamping unit (1) are respectively provided with ridges (8) and recessed grooves (9), and the ridges (8) and recessed grooves (9) on the two clamping units (1) can be plugged into each other.

5. A pressurized pipeline and flange leakage repair auxiliary device according to claim 4, Features: Two adjacent ear plates are connected by bolts.

6. A pressurized pipeline and flange leakage repair auxiliary device according to claim 5, Features: A spring is sleeved on the outer wall of the bolt, and one end of the spring presses against the ear plate (2).

7. A pressurized pipeline and flange leakage repair auxiliary device according to claim 1, Features: A one-way valve is provided at the connection between the injection pipe (4) and the through hole (5).

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