CN216131573U

CN216131573U - Copper wire under-pressure glue injection plugging device

Info

Publication number: CN216131573U
Application number: CN202122746024.XU
Authority: CN
Inventors: 李生鹏; 张月明; 张启科; 赵发生; 吴升潇; 毛吉会; 吕君君; 李增勃; 杨帆
Original assignee: Shaanxi Yanchang Petroleum Group Co Ltd
Current assignee: Shaanxi Yanchang Petroleum Group Co Ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-03-25
Anticipated expiration: 2031-11-10

Abstract

A flange is installed on a pipeline with a lining through fastening bolts, a plurality of internal thread holes are formed in the upper end face of a leakage flange, glue injection joints are installed at the internal thread holes, a leakage flange gap is formed between the upper end face of the leakage flange and the lower end face of the leakage flange, red copper strips surrounding the leakage flange for one circle are arranged in the leakage flange gap, and a new sealing cavity is established between each red copper strip and the sealing face of the leakage flange. The utility model can carry out the leakage stoppage treatment of local or integral leakage points when accidental leakage occurs at the flange joint of the lined pipeline (equipment) running under the conditions of high temperature and high pressure under the condition of ensuring the safety of personnel and the stable running of a production device.

Description

Copper wire under-pressure glue injection plugging device

Technical Field

The utility model belongs to the technical field of pressurized leakage stoppage, and particularly relates to a copper wire pressurized glue injection leakage stoppage device.

Background

In petrochemical production, lined pipelines (equipment) are often operated continuously and periodically. Flammable, explosive, high-temperature and toxic gas can be stored in the pipeline (equipment), and certain potential safety hazards are caused to personnel and safe production for a long time. And in most cases, the leaked flange pipeline (equipment) cannot be isolated and overhauled on site.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide a copper wire under-pressure glue injection leakage stopping device which can perform leakage stopping treatment on local or whole leakage points due to accidental leakage at the flange joint of a pipeline (equipment) with a lining operating under the conditions of high temperature and high pressure under the conditions of ensuring the safety of personnel and stable operation of a production device.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a flange is installed in a lined pipeline 15 through a fastening bolt 1, a plurality of internal thread holes are formed in the upper end face 2 of a leakage flange, an adhesive injection joint 11 is installed at each thread hole, a leakage flange gap 3 is formed between the upper end face 2 of the leakage flange and the lower end face 4 of the leakage flange, a red copper strip 6 which surrounds the leakage flange for one circle is arranged in the leakage flange gap 3, and a new sealing cavity is established between the red copper strip 6 and the sealing face of the leakage flange.

More specifically, the female screw hole is cut by the pneumatic drill 13 and the tap.

More specifically, a glue injection valve 12 is mounted on the glue injection joint 11.

More specifically, the injecting glue connects 11 one end and leaks flange up end 2 for threaded connection, and the other end is the external screw thread, is connected with injecting glue rifle 7, injecting glue rifle 7 is connected with high-pressure injecting glue hose 8, and high-pressure injecting glue hose 8 is connected with pneumatic pump 9.

More specifically, the processing radian of the red copper bar is the same as that of the outer edge of the flange, and the diameter of the red copper bar is slightly larger than the leakage flange gap 3.

More specifically, the internal thread hole is arranged at the thickness 1/2 of the upper end surface 2 of the leakage flange, and the distance between the bottom of the internal thread hole and the fastening bolt 1 is 12 mm.

More specifically, the utility model also comprises a thin-wall elbow 5 with the diameter larger than that of the leakage flange, a plurality of holes 14 are arranged on the thin-wall elbow 5 towards the leakage flange, and one end of the thin-wall elbow 5 is connected with an air source.

Compared with the prior art of injecting glue and stopping leakage of the clamp, the utility model has the beneficial effects that:

1. the utility model has short plugging period, the temperature and the pressure meet the field operation conditions of the pipeline (equipment) with the lining, the influence on the strength of the flange is small, and the economic loss caused by the shutdown of the device can be effectively avoided.

2. The leakage point of the processed pipeline (equipment) has secondary leakage in the shipping period, and the leakage can be eliminated by filling sealant into the leakage pipeline (equipment) through the glue injection joint again.

3. The utility model does not need to prepare a clamp, has short construction period, and can carry out construction operation only by preparing the existing copper wire, sealant and tools.

4. The utility model has wide application range in the field of chemical production. The flange leakage eliminating device is suitable for eliminating the flange leakage of various fluid media such as water, steam, acid-base salt, sand, pulverized coal, crude gas, petroleum products and the like. The method is particularly suitable for the condition that the gap of the leakage flange is less than 10mm, the outer diameter of the leakage flange is less than 2000mm, the pressure is less than 2.5Mpa, and the surface temperature of the leakage flange is less than 177 ℃.

Drawings

Fig. 1 is a schematic structural view of the copper wire under-pressure glue injection plugging device, in the figure.

Fig. 2 is a partial schematic view of the glue injection joint of the present invention.

FIG. 3 is a schematic diagram of the drilling location of the present invention.

Fig. 4 is a cross-sectional view of a leakage flange of the present invention.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the drawings and examples.

As shown in figure 1, the copper wire under-pressure glue injection plugging device provided by the utility model acts on the flange joint of a lined pipeline 15 (namely equipment), the flange is generally installed through a fastening bolt 1, and a leakage flange gap 3 is formed between an upper end face 2 of the leakage flange and a lower end face 4 of the leakage flange. The upper end face 2 of the leakage flange is provided with a plurality of internal thread holes, specifically, a pneumatic drill 13 and a screw tap can be used for cutting, and a glue injection joint 11 with a glue injection valve 12 is arranged at the threaded hole. One end of the glue injection joint 11 is in threaded connection with the upper end face 2 of the leakage flange, the other end of the glue injection joint is provided with external threads and is connected with a glue injection gun 7, the glue injection gun 7 is connected with a high-pressure glue injection hose 8, and the high-pressure glue injection hose 8 is connected with a pneumatic pump 9. When the pneumatic drill 13 is used for drilling, the drill position is located at the position of 1/2 mm of the thickness of the upper end face 2 of the leakage flange, the inclination angle between the drill bit and the end face of the flange is 45 degrees, and the distance between the bottom of the drill hole and the fastening bolt 1 of the flange is about 12 mm. The number of openings depends on the diameter of the leakage flange, as shown in fig. 2 and 3, and a pipe liner 151 is also shown. More specifically, the tap may be tapped and the compound tap 11 installed by drilling with a small drill and reaming with a drill of M8 or M10 or M12.

The red copper strips 6 with the thickness equal to that of the leakage flange gaps 3 are arranged in the leakage flange gaps 3, the red copper strips 6 can be plugged into the leakage flange gaps 3, the red copper strips 6 are lapped end to end around the leakage flanges for one circle, and can be embedded through a pneumatic caulking gun, the processing radian of the red copper strips 6 is the same as that of the outer edges of the flanges, and the diameter of the red copper strips is slightly larger than that of the leakage flange gaps 3, so that a new annular sealing cavity can be established with the leakage flange sealing surfaces, and the purpose of eliminating leakage is achieved. The metal on the flange edge can be turned into the flange gap by utilizing the pneumatic caulking gun to block the red copper strip 6, the spherical caulking gun head is used for tamping the edge, the caulking edge is impacted, and the red copper strip 6 is plastically deformed under the action of the external force of the flange, so that a better sealing effect is formed.

During the use, sealant 17 is filled in the glue injection gun 7, the pneumatic pump 9 is started to drive the glue injection gun 7 to inject the sealant 17 into gaps between original leakage flange bolts and bolt holes (namely gaps between the outer edge of the leakage flange gasket 16 and the red copper strips and between adjacent leakage flange bolts) through the glue injection valve 12, and the gaps are filled between the red copper strips 6 and the leakage flange gasket 16 to perfect a sealed cavity.

As shown in FIG. 4, the present invention further comprises a thin-walled elbow pipe 5 having a diameter larger than that of the leakage flange, the thin-walled elbow pipe 5 being provided with a plurality of holes 14 facing the leakage flange, one end of the thin-walled elbow pipe 5 being connected to a gas source 19, such as plant air (not less than 10 kgf/cm)³) So as to perform blowing and cooling during the leakage of the flange, and a leakage plugging sealing cavity is shown as 18 in the figure.

In conclusion, the method utilizes the red copper strips and the sealant with good ductility to treat the leakage points at the flange joint of the running pipeline (equipment) under the condition of not influencing production, can finish the treatment of the leakage points of the leakage flange in a short time, and can meet the online treatment of the leakage points of the large-pipe-diameter (equipment) in the running process. The method is particularly suitable for the working condition that high-temperature gas leakage occurs at the flange joint of the lined pipeline (equipment) running under the high-temperature and high-pressure conditions. The leakage problem of the lining pipeline and equipment running under the high-temperature and high-pressure condition at the flange joint is effectively solved, the leakage stopping effect is good, and the leakage stopping device is suitable for being popularized in the field of chemical production.

Claims

1. The utility model provides a copper wire area is pressed injecting glue plugging device, the flange passes through fastening bolt (1) to be installed in taking lining pipeline (15), a serial communication port, be provided with a plurality of internal thread holes at leakage flange up end (2), install injecting glue joint (11) in threaded hole department, form leakage flange clearance (3) between leakage flange up end (2) and leakage flange lower extreme terminal surface (4), be provided with red copper strip (6) around leakage flange a week in leakage flange clearance (3), red copper strip (6) and leakage flange seal face establish new seal chamber.

2. The copper wire under-pressure rubber injection plugging device as claimed in claim 1, wherein the internal thread hole is formed by cutting through a pneumatic drill (13) and a screw tap.

3. The copper wire under-pressure glue injection plugging device as claimed in claim 1, wherein a glue injection valve (12) is mounted on the glue injection joint (11).

4. The copper wire under-pressure glue injection plugging device as claimed in claim 1, wherein one end of the glue injection joint (11) is in threaded connection with the upper end face (2) of the leakage flange, the other end of the glue injection joint is provided with external threads and is connected with a glue injection gun (7), the glue injection gun (7) is connected with a high-pressure glue injection hose (8), and the high-pressure glue injection hose (8) is connected with a pneumatic pump (9).

5. The copper wire under-pressure glue injection plugging device as claimed in claim 1, wherein the processing radian of the red copper bar (6) is the same as that of the outer edge of the flange, and the diameter of the red copper bar (6) is slightly larger than the gap (3) of the leaking flange.

6. The copper wire under-pressure rubber injection plugging device as claimed in claim 1, wherein the internal thread hole is located at 1/2 mm of the thickness of the upper end face (2) of the leakage flange, and the distance between the bottom of the internal thread hole and the fastening bolt (1) is 12 mm.

7. The copper wire under-pressure glue injection plugging device according to claim 1, characterized by further comprising a thin-wall bent pipe (5) with a diameter larger than that of the leakage flange, wherein a plurality of holes (14) are formed in the thin-wall bent pipe (5) in a direction towards the leakage flange, and one end of the thin-wall bent pipe (5) is connected with a gas source.