CN212107457U

CN212107457U - Leakage stopping structure with pressure for leakage point of gas pipeline

Info

Publication number: CN212107457U
Application number: CN202020759994.6U
Authority: CN
Inventors: 武海滨; 涂修利; 王跃峰; 刘青; 唐财; 李玲
Original assignee: Pangang Group Engineering Technology Co Ltd
Current assignee: Pangang Group Engineering Technology Co Ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-12-08
Anticipated expiration: 2030-05-09

Abstract

The utility model belongs to the technical field of gas pipeline overhauls the device and specifically relates to a quick, safe gas pipeline leakage point area pressure leaking stoppage structure of realizing gas pipeline leakage point shutoff maintenance, including the gas pipeline who has the gas leakage point, including the gas leaking stoppage structure that contains valve structure, gas leaking stoppage structure and gas pipeline's the outer wall sealing connection of pipeline and constitute airtight cavity, the gas leakage point set up in the airtight cavity. The utility model is particularly suitable for the leakage point of the gas pipeline leakage point with pressure, leaking stoppage and maintenance.

Description

Leakage stopping structure with pressure for leakage point of gas pipeline

Technical Field

The utility model belongs to the technical field of gas pipeline overhauls device and specifically relates to a leaking stoppage structure is pressed in gas pipeline leakage point area.

Background

At present, gas leakage caused by corrosion perforation of a gas pipe network of each production line is normal when the operation of blocking the leakage point of the gas pipe under pressure is carried out. The original adopted plugging mode is to carry out integral packing and plugging operation on the periphery of a leakage point or all the leakage points by using an iron plate or a pipeline, so that an operator needs to carry out gas operation in a long time, and meanwhile, a welder needs to carry out welding in a long time with gas and pressure, thus easily causing injury accidents of the operator.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a gas pipeline leakage point area of realizing gas pipeline leakage point shutoff maintenance is pressed leaking stoppage structure fast, safe is provided.

The utility model provides a technical scheme that its technical problem adopted is: the leakage stopping structure with pressure of the leakage point of the gas pipeline comprises the gas pipeline with the gas leakage point and a gas leakage stopping structure with a valve structure, wherein the gas leakage stopping structure is hermetically connected with the outer wall surface of the pipeline of the gas pipeline to form a closed cavity, and the gas leakage point is arranged in the closed cavity.

Furthermore, the gas leakage stopping structure is composed of a leakage stopping short pipe and a leakage stopping short plate hermetically connected with one end of the leakage stopping short pipe, and the valve structure is arranged on the leakage stopping short plate.

Furthermore, the sealing surface of the short plugging pipe at the other end of the short plugging pipe is connected with the outer wall surface of the gas pipeline in a sealing way to form a closed chamber.

Furthermore, the leaking stoppage short pipe and the leaking stoppage short plate are connected in a sealing way through a leaking stoppage short pipe flange and a leaking stoppage short plate flange.

Furthermore, the leaking stoppage short pipe flange and the leaking stoppage short plate flange are connected through a sealing bolt.

Furthermore, the sealing surface of the short plugging pipe at the other end of the short plugging pipe is matched with the outer wall surface of the gas pipeline.

Further, the valve structure is a vent ball valve.

Further, the vent ball valve is communicated with the leaking stoppage short pipe through a vent pipeline.

The utility model has the advantages that: when in actual use, the installation process of the leakage point pressurized leakage stopping structure of the gas pipeline is as follows: firstly, finding a gas leakage point, and confirming the specifications of the gas leakage stopping structure, such as size, dimension and the like; then, opening a valve structure on the gas leakage stopping structure; then, the gas leakage stopping structure is hermetically connected with the outer wall surface of the gas pipeline, and a gas leakage point is arranged in the closed cavity; and finally, closing the valve structure on the gas leakage stopping structure to form a closed cavity, thereby stopping the leakage of the gas leakage point. The utility model is particularly suitable for the leakage point of the gas pipeline leakage point with pressure, leaking stoppage and maintenance.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Labeled as: the gas leakage stopping device comprises a gas pipeline 1, a gas leakage point 11, a gas pipeline inner wall surface 12, a pipeline outer wall surface 13, a leakage stopping short pipe 2, a leakage stopping short pipe sealing surface 21, a leakage stopping short pipe flange 22, a leakage stopping short plate 3, a leakage stopping short plate flange 31, a valve structure 32, an exhaust pipeline 33 and a sealing bolt 4.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The gas pipeline leakage point under-pressure leakage stopping structure shown in fig. 1 comprises a gas pipeline 1 with a gas leakage point 11 and a gas leakage stopping structure with a valve structure 32, wherein the gas leakage stopping structure is hermetically connected with the outer wall surface 13 of the gas pipeline 1 to form a closed cavity, and the gas leakage point 11 is arranged in the closed cavity.

The utility model discloses changed the mode of original coal gas shutoff, adopted the mode of coal gas leaking stoppage structure and the outer wall 13 sealing connection of the pipeline of gas pipeline 1 and constitute airtight cavity to carry out the shutoff to the leakage trouble, can be safer, the online leaking stoppage operation of more quick completion gas pipeline leakage.

In order to further reduce the manufacturing cost of the gas leakage stoppage structure and better adapt to the actual leakage stoppage operation, the following scheme can be selected: the gas leakage stopping structure is composed of a leakage stopping short pipe 2 and a leakage stopping short plate 3 hermetically connected with one end of the leakage stopping short pipe 2, and a valve structure 32 is arranged on the leakage stopping short plate 3. As shown in figure 1, the structure of the short plugging pipe 2 and the short plugging plate 3 is not only convenient for manufacturing and processing, but also can well meet the requirement of sealing performance. Furthermore, preferably, the sealing surface 21 of the short plugging pipe at the other end of the short plugging pipe 2 is hermetically connected with the outer wall surface 13 of the gas pipeline 1 to form a closed chamber, so as to better meet the sealing requirement. Preferably, the sealing surface 21 of the short plugging pipe at the other end of the short plugging pipe 2 is matched with the outer wall surface of the gas pipeline 1, so that better sealing performance is obtained.

Regarding the connection between the plugging short pipe 2 and the plugging short plate 3, in order to meet the sectional installation requirement between the plugging short pipe 2 and the plugging short plate 3, the plugging short pipe 2 and the plugging short plate 3 are preferably connected in a sealing way through a plugging short pipe flange 22 and a plugging short plate flange 31, and further the plugging short pipe flange 22 and the plugging short plate flange 31 are preferably connected through a sealing bolt 4. In addition, to facilitate the selection of the valve structure 32, it is preferred that the valve structure 32 be a vent ball valve.

In order to better realize the discharge of the gas and ensure the better sealing connection operation of the gas leakage stopping structure and the outer wall surface 13 of the pipeline, the exhaust ball valve is preferably communicated with the leakage stopping short pipe 2 through an exhaust pipeline 33.

As far as the specific leak repairing operation is concerned, this is generally the case: firstly, an operator wears a self-carried air respirator to confirm the diameter of a gas pipeline 1 needing pressure leakage blocking; secondly, according to the diameter of the gas pipeline 1, a short leaking stoppage pipe 2 matched with the radian of a leakage point pipeline is manufactured in a safe place, and a short leaking stoppage pipe flange 22 is welded at the other end of the short leaking stoppage pipe 2 to form the short leaking stoppage pipe 2 with a flange; next, manufacturing a leaking stoppage short plate 3 with a leaking stoppage short plate flange 31, which has the same size as the welding leaking stoppage short pipe flange 22 of the leaking stoppage short pipe 2, and installing an exhaust ball valve on the upper opening of the leaking stoppage short plate 3; then, the leaking stoppage short pipe 2 with the flange is welded at the position of the gas leakage point 11, preferably, the gas leakage point 11 is positioned at the central position of the leaking stoppage short pipe 2, and the welding quality and speed are ensured because no pressure exists around the welding point; and finally, opening the exhaust ball valve on the short leaking stoppage plate 3, installing the short leaking stoppage plate 3 and fastening the connecting bolt, and then closing the ball valve.

In the whole leakage stopping process, the gas flow speed and the flow direction of a leakage point of a gas pipeline are not interfered, and meanwhile, no gas pressure exists at the periphery of a welding point in the welding operation process, so that the safe and quick welding operation environment is ensured. In addition, the structure can also reduce the operation time and personnel and reduce the labor intensity of the operators. The quick plugging device can be popularized to pressure pipeline leakage requiring quick plugging operation, and has wide market application prospect.

Claims

1. The leakage stoppage structure with pressure of the gas pipeline leakage point comprises a gas pipeline (1) with a gas leakage point (11), and is characterized in that: the gas leakage stopping structure comprises a gas leakage stopping structure with a valve structure (32), wherein the gas leakage stopping structure is hermetically connected with the outer wall surface (13) of a gas pipeline (1) to form a closed cavity, and a gas leakage point (11) is arranged in the closed cavity.

2. The gas pipeline leakage point plugging structure under pressure of claim 1, characterized in that: the gas leakage stoppage structure is composed of a leakage stoppage short pipe (2) and a leakage stoppage short plate (3) hermetically connected with one end of the leakage stoppage short pipe (2), and a valve structure (32) is arranged on the leakage stoppage short plate (3).

3. The gas pipeline leakage point plugging structure under pressure of claim 2, characterized in that: the sealing surface (21) of the leaking stoppage short pipe at the other end of the leaking stoppage short pipe (2) is hermetically connected with the outer wall surface (13) of the gas pipeline (1) to form a closed chamber.

4. The gas pipeline leakage point leakage structure under pressure of claim 2 or 3, characterized in that: the leaking stoppage short pipe (2) and the leaking stoppage short plate (3) are hermetically connected through a leaking stoppage short pipe flange (22) and a leaking stoppage short plate flange (31).

5. The gas pipeline leakage point plugging structure under pressure of claim 4, characterized in that: the flange (22) of the leaking stoppage short pipe and the flange (31) of the leaking stoppage short plate are connected through a sealing bolt (4).

6. The gas pipeline leakage point leakage structure under pressure of claim 2 or 3, characterized in that: the sealing surface (21) of the short plugging pipe at the other end of the short plugging pipe (2) is matched with the outer wall surface of the gas pipeline (1).

7. The gas pipeline leakage point leakage structure under pressure of claim 2 or 3, characterized in that: the valve structure (32) is an exhaust ball valve.

8. The gas pipeline leakage point plugging structure under pressure of claim 7, characterized in that: the exhaust ball valve is communicated with the plugging short pipe (2) through an exhaust pipeline (33).