CN216045998U

CN216045998U - Leakage repairing pad for welding position of flange and pipeline

Info

Publication number: CN216045998U
Application number: CN202121898601.0U
Authority: CN
Inventors: 刘光宗; 李玉东
Original assignee: Lihuayi Lijin Refining and Chemical Co Ltd
Current assignee: Lihuayi Lijin Refining and Chemical Co Ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-03-15
Anticipated expiration: 2031-08-13

Abstract

The utility model discloses a leak repair gasket for welding a flange and a pipeline, which comprises an extension body and a connecting body. The outer wall of the extension is provided with a first limit ring near the stop ring, the outer wall of the extension is provided with a second limit ring near the connecting body, and a first O is installed between the stop ring and the first limit ring A second O-ring is installed between the connecting body and the second limiting ring, an annular inner sealing dam is arranged on one end face of the connecting body near the extension body, and an annular inner sealing dam is arranged on the end face of the connecting body on the other side Outer sealing dam. The utility model has the advantages of simple structure and convenient use, can effectively plug the trachoma remaining in flange welding, solve the occurrence of oil leakage, improve the sealing performance of the oil pipe flange, and ensure the sealing of the oil pipe connection.

Description

Leakage repairing pad for welding position of flange and pipeline

Technical Field

The utility model relates to the technical field of mechanical sealing elements, in particular to a leakage repairing pad for a welding position of a flange and a pipeline.

Background

Lubricating oil supply is an indispensable important link in a compressor unit, and plays roles of bearing bush lubrication, cooling, corrosion prevention, power supply and the like in the whole unit production and operation process, in daily work, when a small amount of leakage occurs at the welding position of a flange and a pipeline of a lubricating oil pipe, repair welding is usually adopted for solving the problem, oil in a lubricating oil tank needs to be put clean during welding, and replacement treatment is needed after welding, so that time and labor are wasted, the maintenance efficiency is low, and the production is influenced. When the flange oil leakage phenomenon exists due to the aging of materials or the installation problem after long-time operation, no effective treatment method exists at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides a leakage repairing pad for a welding position of a flange and a pipeline.

In order to achieve the purpose, the technical scheme of the utility model is as follows: a leakage repairing pad for a flange and pipeline welding part comprises an extension body and a connecting body, wherein the extension body is of a hollow cylindrical structure, the connector is of a circular structure, the connector is connected with one end of an extension body, the inner diameter of the extension body is the same as that of the connector, the outer diameter of the extension body is smaller than that of the connecting body, the outer wall of one end of the extension body, which is far away from the connecting body, is provided with a retaining ring, a first limit ring is arranged on the outer wall of the extension body near the baffle ring, a second limit ring is arranged on the outer wall of the extension body near the connecting body, the stop ring, the first limit ring and the second limit ring have the same outer diameter, a first O-shaped ring is arranged between the stop ring and the first limit ring, a second O-shaped ring is installed between the connecting body and the second limiting ring, an annular inner sealing dam is arranged on the end face, close to one side of the extending body, of the connecting body, and an annular outer sealing dam is arranged on the end face, close to the other side of the extending body, of the connecting body.

Further, the method comprises the following steps of; the corner of one side of the baffle ring and the second limiting ring, which is far away from the connector, is provided with an inclined plane transition section.

Further, the method comprises the following steps of; the outer diameters of the first O-shaped ring and the second O-shaped ring are slightly larger than the baffle ring.

The utility model has the beneficial effects that: the leakage-stopping device is simple in structure and convenient to use, can effectively stop leakage of sand holes left in flange welding, solves the problem of oil leakage, improves the sealing performance of the oil pipe flange and ensures the sealing of oil pipe connection; during maintenance, the flange is only required to be disassembled and the leakage repairing pad is taken out, and the first O-shaped ring and the second O-shaped ring are replaced for reuse, so that the treatment time is short, the speed is high, and the maintenance efficiency is greatly improved; the sealing device can be widely applied to sealing when sand holes leak during the welding of all pressure oil pipe flanges.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of the present invention with the first and second O-rings removed;

FIG. 4 is a cross-sectional view of FIG. 3;

fig. 5 is a schematic view of the present invention in use.

In the figure: 1. an extension body; 2. a linker; 3. a baffle ring; 4. a first limit ring; 5. a second stop collar; 6. a first O-ring; 7. a second O-ring; 8. an inner sealing dam; 9. and (4) sealing the dam externally.

Detailed Description

Example (b):

as shown in fig. 1 and 4, a leakage repairing pad for a flange and pipeline welding position comprises an extension body 1 and a connecting body 2, wherein the extension body 1 and the connecting body 2 are made of polytetrafluoroethylene, the extension body 1 is of a hollow cylindrical structure, the connecting body 2 is of a circular ring structure, the connecting body 2 is connected with one end of the extension body 1, the inner diameter of the extension body 1 is the same as the inner diameter of the connecting body 2, the outer diameter of the extension body 1 is smaller than the outer diameter of the connecting body 2, the extension body 1 and the connecting body 2 are integrally formed, a baffle ring 3 is arranged on the outer wall of one end, far away from the connecting body 2, of the extension body 1, a first limit ring 4 is arranged on the outer wall of the extension body 1 and close to the baffle ring 3, a second limit ring 5 is arranged on the outer wall of the extension body 1 and close to the connecting body 2, the outer diameters of the baffle ring 3, the first limit ring 4 and the second limit ring 5 are the same, and a first O6 is arranged between the baffle ring 3 and the first limit ring 4, install second O type circle 7 between connector 2 and the

second spacing ring

5, 6 external diameters of first O type circle and 7 external diameters of second O type circle all slightly are greater than

fender ring

3, 6 materials of first O type circle and second O type circle are fluororubber, connector 2 is close to 1 side end face of extension body and is equipped with annular

internal seal dam

8, 2 opposite side end faces of connector are equipped with annular external seal dam 9.

In this embodiment, the corners of the baffle ring 3 and the second limiting ring 5 away from the connecting body 2 are both provided with an inclined transition section.

The utility model is used for the lubricating oil pipe axial seal installation method, insert the extender 1 into lubricating oil pipeline at first, make first O-shaped ring 6, second O-shaped ring 7 and lubricating oil pipeline inner wall interference fit, the inclined plane transition section of said baffle ring 3 and second spacing ring 5 helps the extender 1 to insert in lubricating oil pipeline smoothly; then, the connector 2 is aligned with a flange sealing surface of a lubricating oil pipe, and the flange is fastened by using bolts, so that the inner sealing dam 8 and the outer sealing dam 9 are compressed and deformed to achieve a sealing effect.

As shown in fig. 5, a sand hole at the welding position of the lubricating oil pipe flange and the pipeline is blocked, and oil leakage from the flange is collected in gaps among the inner sealing dam 8, the outer sealing dam 9 and the flange. During maintenance, the flange is detached and taken out of the leakage repairing pad, oil leakage is collected, and the first O-shaped ring 6 and the second O-shaped ring 7 are replaced for reuse.

The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the utility model as set forth in the appended claims.

In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings 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 thus, should not be construed as limiting the present invention.

Claims

1. The utility model provides a flange and pipeline welding department are with mending hourglass pad which characterized in that: including extension body and connector, the extension body is the hollow cylinder structure, the connector is the ring shape structure, extension body one end is connected to the connector, extension body internal diameter is the same with the connector internal diameter, the extension body external diameter is less than the connector external diameter, the extension body is kept away from connector one end outer wall and is equipped with the retaining ring, the extension body outer wall is equipped with first spacing ring near retaining ring department, the extension body outer wall is equipped with the second spacing ring near connector department, retaining ring, first spacing ring, second spacing ring three external diameter are the same, install first O type circle between retaining ring and the first spacing ring, install second O type circle between connector and the second spacing ring, the connector is close to extension body side end face and is equipped with annular internal seal dam, connector another side end face is equipped with annular external seal dam.

2. The leak-stopping pad for the flange-pipeline welding position according to claim 1, characterized in that: the corner of one side of the baffle ring and the second limiting ring, which is far away from the connector, is provided with an inclined plane transition section.

3. The leak-stopping pad for the flange-pipeline welding position according to claim 1, characterized in that: the outer diameters of the first O-shaped ring and the second O-shaped ring are slightly larger than the baffle ring.