CN211875429U - High-pressure pipeline under-pressure plugging device - Google Patents

Abstract

The utility model relates to a high-pressure pipeline area is pressed leaking stoppage technique, concretely relates to high-pressure pipeline area is pressed plugging device. The under-pressure leakage blocking device of the high-pressure pipeline comprises two pressure-bearing shells, the two pressure-bearing shells coat leakage points of the under-pressure pipeline, two limiting plates are arranged inside a pressure-bearing section of each pressure-bearing shell, the limiting plates divide the pressure-bearing section into a sealing cavity A, a sealing cavity B and three glue injection spaces of the pressure-bearing cavity, a jackscrew sleeve is arranged on the under-pressure pipeline and inserted into a fixing section, the end part of the jackscrew tightly props up the limiting plates and is arranged in a sealing mode with the limiting plates, and sealant is injected into the glue injection spaces. Sealant is respectively injected into the three glue injection spaces in the pressure-bearing shell, so that the sealant can be effectively and completely filled, the leakage stoppage effect is obvious, the glue injection efficiency can be improved, and the leakage stoppage can be conveniently and effectively carried out.

Description

High-pressure pipeline under-pressure plugging device

Technical Field

The utility model relates to a high-pressure pipeline area is pressed leaking stoppage technique, concretely relates to high-pressure pipeline area is pressed plugging device.

Background

The under-pressure leakage blocking technology is widely applied to the fields of chemical production, pipeline transportation and the like, avoids material discharge in the vehicle ordering operation, and has great economic benefit. In the chemical industry field, all kinds of pipelines and container jar corrode perforation and run out the drip leakage, take place occasionally, take the pressure leaking stoppage and need make and install fixture usually, then through special injecting glue instrument, take the pressure leaking stoppage to seal glue and pour into fixture into to the special area, form closely knit filler, form new sealedly. However, the existing leakage stopping method and device are easy to cause secondary leakage, untight sealing and the like.

Disclosure of Invention

An object of the utility model is to provide a new area is pressed plugging device and leaking stoppage method to solve present area and press in the leaking stoppage construction, the problem of the secondary corrosion leakage that often appears.

The utility model provides a technical scheme is:

the pressurized leakage blocking device of the high-pressure pipeline comprises two pressure-bearing shells, wherein the two pressure-bearing shells coat leakage points of the pressurized pipeline, each pressure-bearing shell comprises a pressure-bearing section and a fixed section, two limiting plates are arranged inside the pressure-bearing section of each pressure-bearing shell, the limiting plates on the two pressure-bearing shells correspond to and are in sealing connection with the pressurized pipeline, the limiting plates correspondingly arranged on the two pressure-bearing shells form two groups of limiting plates, the pressure-bearing sections are divided into sealing cavity A, sealing cavity B and three glue injection spaces of the pressure-bearing cavities by the two groups of limiting plates, the leakage points are located in the pressure-bearing cavities, a jackscrew is sleeved on the pressurized pipeline and is inserted into the fixed sections, the end parts of jackscrews tightly push the limiting plates and are in sealing arrangement with the limiting plates.

Specifically, a pressure-bearing flange is arranged between the end part of the jackscrew and the limiting plate.

Specifically, a metal sealing gasket is arranged between the pressure-bearing flange and the limiting plate.

Specifically, the jackscrew is connected with the pipeline under pressure in a sealing manner.

Preferably, the external surface of the jackscrew is provided with external threads, the inner walls of the fixed sections of the two pressure-bearing shells are provided with internal threads, and the external threads are matched with the internal threads.

Preferably, the jackscrew comprises two semicylinders, and the periphery of the outside end of jackscrew is prismatic structure, and two semicylinders pass through the jackscrew internal thread and connect.

Preferably, the pressure-bearing flange is formed by two semicircular rings and is connected through screws.

The utility model discloses a secondary corrosion of chemical substance to pressure-bearing casing and seal structure in the high pressure pipeline can effectively be reduced in the cooperation of limiting plate and jackscrew. In addition, sealant is respectively injected into the three glue injection spaces in the pressure-bearing shell, so that the sealant can be effectively and completely filled, the plugging effect is obvious, the glue injection efficiency can be improved, and the plugging can be conveniently and effectively carried out.

Drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a schematic structural view of embodiment 1;

FIG. 3 is a schematic structural view of example 2;

FIG. 4 is a schematic structural view of example 2;

FIG. 5 is a perspective view of a pressure-bearing flange;

FIG. 6 is a view of a pressure flange assembly;

FIG. 7 is a view of the assembly of the positive pressure flange with the pressurized pipe;

FIG. 8 is a schematic structural view of a jackscrew;

FIG. 9 is a cross-sectional view of the threaded portion of the jackscrew;

FIG. 10 is an enlarged view of portion A of FIG. 1;

1-pressure-bearing shell, 2-pressure-bearing flange, 3-limiting plate, 4-jackscrew, 5-pressure-bearing shell internal screw, 6-jackscrew internal screw, 7-pressure release valve, 8-glue injection valve, 9-check valve, 10-metal sealing gasket, 11-pressure pipeline, 12-air release valve, 13-pressure gauge, 14-pressure-bearing shell screw, 15-leakage point, 16-sealing cavity A, 17-sealing cavity B, 18-pressure-bearing cavity and 19-screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the staff of ordinary skill in the art without creative work belong to the protection scope of the present invention.

Example 1

In this embodiment, the leak 15 is located in a straight section of the pressurized pipeline 11.

High-pressure pipeline's leaking stoppage device under pressure, including two pressure-bearing shells 1, two pressure-bearing shells 1 are to the cladding of the leakage point 15 of pipeline 11 under pressure, pressure-bearing shell 1 comprises pressure-bearing section and fixed segment, the inside two limiting plates 3 that are provided with of pressure-bearing section of every pressure-bearing shell 1, limiting plate 3 on two pressure-bearing shells 1 corresponds sealing connection and with pipeline 11 under pressure sealing connection, the limiting plate 3 that corresponds the setting on two pressure-bearing shells 1 constitutes two sets of limiting plates 3, two sets of limiting plates 3 divide the pressure-bearing section into sealed chamber A16, sealed chamber B17, the three injecting glue space in pressure-bearing chamber 18, leakage point 15 is located pressure-bearing chamber 18, jackscrew 4 overlaps and locates on the pipeline 11 under pressure and inserts the fixed segment, the tip of jackscrew 11 tightly pushes up limiting plate 3 and sets up with limiting plate 3 is sealed, sealed chamber A16, sealed chamber B17, inject sealed.

The two pressure-bearing shells 1 are connected by pressure-bearing shell screws 14.

And a pressure-bearing flange 2 is arranged between the end part of the jackscrew 4 and the limiting plate 3.

A metal sealing gasket 10 is arranged between the pressure-bearing flange 2 and the limiting plate 3.

The jackscrew 4 is connected with the pipeline 11 with pressure in a sealing way.

The outer surface of the jackscrew 4 is provided with external threads, the inner walls of the fixed sections of the two pressure-bearing shells 1 are provided with internal threads, and the external threads are matched with the internal threads. The external thread and the internal thread are in a spiral shape; or can be circular and consists of a plurality of circular ring grooves. When the external thread and the internal thread are in a spiral shape, the two jackscrews 4 can be screwed to tightly jack the limiting plate 3.

The jackscrew 4 comprises two semicircles, the periphery of the outside end of jackscrew 4 is prismatic structure, and two semicircles are connected through jackscrew internal thread 6.

The pressure-bearing flange 2 is formed by two semicircular rings and is connected through screws 19.

A method for plugging a high-pressure pipeline under pressure,

1) measuring the position of a leakage point 15 on the pressurized pipeline 11, installing a limiting plate 3 on one side of the leakage point 15, installing a fixed jackscrew 4 on the outer side of the limiting plate 3, and pointing the end part of the jackscrew 4 to the leakage point 15;

2) another limiting plate 3 is arranged on the other side of the leakage point 15, a fixed jackscrew 4 is arranged on the outer side of the other limiting plate 3, and the end part of the jackscrew 4 points to the leakage point 15;

3) coating sealant on the inner wall of the pressure-bearing shell 1 at a position corresponding to the limiting plate 3, assembling the pressure-bearing shell to the pipeline 11 with pressure to cover the leakage point 15, dividing the pressure-bearing section of the pressure-bearing shell 1 into three glue injection spaces of a sealing cavity A16, a sealing cavity B17 and a pressure-bearing cavity 18 by the limiting plate 3, and connecting the straight pipe section of the pressure-bearing shell 1 with the jackscrew 4;

4) injecting sealant into a sealing cavity A16, a sealing cavity B17 and a pressure bearing cavity 18 in the pressure bearing shell 1 by using the glue injection assembly respectively, and curing and maintaining the pressure of the sealant;

5) and the pressure bearing cavity bears pressure to finish plugging.

In the steps 1) and 2), before the jackscrew 4 is installed, the metal sealing gasket 10 is clamped on the sealing surface of the limiting plate 3, the sealant is coated on two sides of the pressure-bearing flange 2, the sealant is coated on the connecting surface of the jackscrew 4, the jackscrew 4 is assembled on the pressure-bearing pipeline 11, and the pressure-bearing flange 2 and the metal sealing gasket 10 are jacked to the limiting plate 3 and fastened.

Each glue injection assembly comprises a glue injection valve 8, a check valve 9, a pressure release valve 7, an emptying valve 12 and a pressure gauge 13. The glue injection valve 8 and the check valve 9 are connected with the pressure-bearing shell 1 through pipelines. The emptying valve 12 and the pressure relief valve 7 are connected with the shell 1 through pipelines. The pressure gauge 13 is arranged between the pressure relief valve 7 and the pressure-bearing shell 1.

During glue injection, the glue injection valve 8 and the emptying valve 12 are opened, the sealant is injected into the glue injection space, when the sealant overflows from the emptying valve 12, the emptying valve 12 is closed, glue injection is continued until the pressure gauge 13 shows 1.5Mpa, the glue injection valve 8 is closed, the sealant is cured in the glue injection space and pressure is kept, and the glue injection space is sealed.

Example 2

The present embodiment differs from embodiment 1 in that the leak point 15 is located at the bend of the pressurized pipe 11.

The pressurized leakage blocking device of the high-pressure pipeline comprises two pressure-bearing shells 1, wherein the two pressure-bearing shells 1 coat leakage points 15 of a pressurized pipeline 11, and each pressure-bearing shell 1 consists of a pressure-bearing section and a fixed section. The fixed sections on the two sides of the pressure-bearing section are mutually vertical, and the jackscrews 4 positioned on the two fixed sections are mutually vertical.

When the limiting plates 3 are installed on two sides of the leakage point 15, the positions and the connection relation of the two limiting plates 3 need to be considered, and the space enclosed by the pressure-bearing shell 1 is divided into three glue injection spaces, namely a sealing cavity A16, a sealing cavity B17 and a pressure-bearing cavity 18, by the limiting plates 3.

And the position of the glue injection assembly is adjusted adaptively according to the shape of the glue injection space.

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

Claims (7)

1. The under-pressure leakage blocking device of the high-pressure pipeline is characterized by comprising two pressure-bearing shells (1), wherein the two pressure-bearing shells (1) coat leakage points (15) of the under-pressure pipeline (11), each pressure-bearing shell (1) comprises a pressure-bearing section and a fixed section, two limiting plates (3) are arranged in the pressure-bearing section of each pressure-bearing shell (1), the limiting plates (3) on the two pressure-bearing shells (1) are correspondingly and hermetically connected with the under-pressure pipeline (11), the limiting plates (3) correspondingly arranged on the two pressure-bearing shells (1) form two groups of limiting plates (3), the two groups of limiting plates (3) divide the pressure-bearing sections into three spaces of a sealing cavity A (16), a sealing cavity B (17) and a pressure-bearing cavity (18), the leakage points (15) are positioned in the pressure-bearing cavities (18), and a jackscrew (4) is sleeved on the pipeline (11) and inserted into the fixed, the end part of the jackscrew (4) tightly pushes against the limiting plate (3) and is sealed with the limiting plate (3), and sealant is injected into the sealing cavity A (16), the sealing cavity B (17) and the pressure bearing cavity (18).

2. The pressurized plugging device of the high-pressure pipeline according to claim 1, wherein a pressure-bearing flange (2) is arranged between the end part of the jackscrew (4) and the limiting plate (3).

3. The device for stopping leakage under pressure of a high-pressure pipeline according to claim 1, wherein a metal sealing gasket (10) is arranged between the pressure-bearing flange (2) and the limiting plate (3).

4. The pressurized plugging device of the high-pressure pipeline according to claim 1, wherein the jackscrew (4) is connected with the pressurized pipeline (11) in a sealing way.

5. The high-pressure pipeline leakage blocking device with pressure as claimed in claim 1, 2 or 4, wherein the external surface of the jackscrew (4) is provided with external threads, the inner walls of the fixed sections of the two pressure-bearing shells (1) are provided with internal threads, and the external threads are matched with the internal threads.

6. The device for stopping leakage under pressure of a high-pressure pipeline according to claim 5, wherein the jackscrew (4) is composed of two semi-cylinders, the periphery of the outer side end of the jackscrew (4) is in a prism structure, and the two semi-cylinders are connected through a jackscrew inner screw (6).

7. The high-pressure pipeline pressure leakage stopping device according to claim 2, wherein the pressure-bearing flange (2) is composed of two semicircular rings and is connected through a screw (19).

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