CN217667276U

CN217667276U - Protective gas plugging device in pipeline welding process

Info

Publication number: CN217667276U
Application number: CN202123373980.4U
Authority: CN
Inventors: 刘超; 胡昊; 张国伟; 温振威; 李松
Original assignee: Offshore Oil Engineering Co Ltd; Offshore Oil Engineering Qingdao Co Ltd
Current assignee: Offshore Oil Engineering Co Ltd; Offshore Oil Engineering Qingdao Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-10-28
Anticipated expiration: 2031-12-29

Abstract

The utility model belongs to the technical field of pipeline welding equipment, especially, be a protection gas plugging device in pipeline welding process, including near-end block structure and distal end block structure, near-end block structure includes near-end gasbag, first inflation hose and first protection air pump, distal end block structure includes that distal end gasbag, second inflate hose and second protection air pump, all be provided with sealing joint on near-end gasbag and the distal end gasbag, and near-end gasbag and distal end gasbag all inflate the hose with first inflation hose and second respectively through sealing joint and be connected. The utility model discloses a setting is by near-end block structure that near-end gasbag, first inflation hose and first protection air pump are constituteed, sets up the distal end block structure who is aerifyd hose and second protection air pump by distal end gasbag, second again to one side that is close to the distal end gasbag at the near-end gasbag sets up the safety control valve, can reach the purpose of practicing thrift the cost.

Description

Protective gas plugging device in pipeline welding process

Technical Field

The utility model relates to a pipeline welding equipment technical field specifically is a protective gas plugging device among pipeline welding process.

Background

In the process of welding a metal pipeline, if a welding seam is in direct contact with air, metal at the position of the welding seam can be oxidized, so that the quality of the welding seam is influenced.

The prior art has the following problems:

the method for filling the protective gas generally adopted in the market at present is that one end of a pipeline system is plugged by a blind plate or an adhesive tape, and then the protective gas is continuously filled into the pipeline from the other end, so that the protective gas concentration required by welding can be always kept in the whole pipeline space including the vicinity of a welding seam, but a large number of metal pipelines need to be welded in the construction process of large-scale projects such as an offshore oil platform or a large-scale LNG module, and a considerable part of pipelines have longer distance and complicated trend, the required space inside is very large, and a large amount of protective gas needs to be consumed for welding, so that the unnecessary economic cost is increased.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a protection gas plugging device in pipeline welding process has solved the higher problem of welding cost who exists now.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a protection gas plugging device in pipeline welding process, includes near-end block structure and distal end block structure, near-end block structure includes near-end gasbag, first inflation hose and first protection air pump, distal end block structure includes that distal end gasbag, second inflation hose and second protection air pump.

As a preferred technical scheme of the utility model, all be provided with sealing joint on near-end gasbag and the distal end gasbag, and near-end gasbag and distal end gasbag all inflate the hose with first inflation hose and second respectively through sealing joint and be connected.

As a preferred technical scheme of the utility model, the near-end gasbag is linked together through first inflation hose and first protection air pump, and is provided with the safety control valve on the lateral wall that first protection air pump one side was kept away from to the near-end gasbag.

As a preferred technical scheme of the utility model, the distal end gasbag is aerifyd the hose through the second and is linked together with second protection air pump, and the one end that the hose is close to second protection air pump is aerifyd to the second is provided with the shutoff valve.

As an optimized technical scheme of the utility model, the shape of near-end gasbag and distal end gasbag is the same, and near-end gasbag and distal end gasbag form by soft materials and aerify the discoid that can be certain thickness after expanding

Compared with the prior art, the utility model provides a protection gas plugging device among pipeline welding process possesses following beneficial effect:

1. this kind of protective gas plugging device in pipeline welding process, through setting up by the near-end gasbag, the near-end block structure that first inflation hose and first protection air pump are constituteed, the setting is by the distal end gasbag again, the distal end block structure that hose and second protection air pump are constituteed is aerifyd to the second, and set up the safety control valve in one side that the near-end gasbag is close to the distal end gasbag, realize the shutoff to the welding department both sides through near-end gasbag and distal end gasbag during the use, and continuously let in the protective gas to the welding department through the safety control valve, compare in the traditional mode that carries out the shutoff with blind plate or sticky tape at pipeline system's tip, the device can practice thrift a large amount of protective gas, thereby economic cost has been saved.

2. This protective gas plugging device in pipeline welding process, through the safety control valve and the shutoff valve that set up, can realize the gassing of filling to the distal end gasbag through shutoff valve and second protection air pump during the use, thereby can be convenient for the staff to operate, first protection air pump of rethread and safety control valve, can realize letting in the control of protective gas in the pipeline, thereby can realize along with the purpose of stopping, compare in the traditional mode that carries out the shutoff with blind plate or sticky tape at pipeline system's tip, the device fills the process of welding protective gas safe controllable more.

Drawings

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

fig. 2 is a schematic view of the connection structure of each component of the present invention.

In the figure: 1. a proximal end blocking structure; 2. a distal end blocking structure; 3. a proximal balloon; 4. a first inflation hose; 5. a first protection air pump; 6. a distal balloon; 7. a second inflation hose; 8. a second protection air pump; 9. sealing the joint; 10. a safety control valve; 11. the valve is closed.

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 a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-2, in this embodiment: the utility model provides a protection gas plugging device in pipeline welding process, includes near-end block structure 1 and distal end block structure 2, and near-end block structure 1 includes near-end gasbag 3, first gas tube 4 and first protection air pump 5, and distal end block structure 2 includes that far-end gasbag 6, second gas tube 7 and second protection air pump 8 are aerifyd to the far-end gasbag.

In this embodiment, the proximal air bag 3 and the distal air bag 6 are both provided with a sealing joint 9, and the proximal air bag 3 and the distal air bag 6 are both connected with the first inflation hose 4 and the second inflation hose 7 through the sealing joints 9, so that the device can be assembled and disassembled conveniently; the near-end air bag 3 is communicated with a first protection air pump 5 through a first inflation hose 4, a safety control valve 10 is arranged on the side wall of the near-end air bag 3, which is far away from the side of the first protection air pump 5, the opening and closing of the safety control valve 10 are controlled by pressure, the near-end air bag is in a closed state when not used, and after the pressure in the near-end air bag 3 reaches a threshold value, the safety control valve 10 is automatically opened to realize the inflation of protection air in a welding area; the far-end air bag 6 is communicated with a second protection air pump 8 through a second inflation hose 7, and a shutoff valve 11 is arranged at one end, close to the second protection air pump 8, of the second inflation hose 7 so as to facilitate the assembly and disassembly of the far-end air bag 6; the shape of near-end gasbag 3 is the same with distal end gasbag 6, and near-end gasbag 3 and distal end gasbag 6 form by soft materials and inflate the discoid that can be certain thickness after expanding to near-end gasbag 3 and distal end gasbag 6 can be with the better laminating of pipe wall.

The utility model discloses a theory of operation and use flow: when the welding device is used, the first inflation hose 4 and the second inflation hose 7 are connected with the near-end airbag 3 and the far-end airbag 6 through the sealing joints 9 respectively, the far-end airbag 6 and the near-end airbag 3 are placed on two sides of a welded junction, then the second protection air pump 8 is opened to inflate the far-end airbag 6, after the far-end airbag 6 expands and is attached to the pipe wall, the second protection air pump 8 and the shutoff valve 11 are closed, then the first protection air pump 5 is opened to inflate the near-end airbag 3, the near-end airbag 3 expands and is attached to the pipe wall, when the pressure in the near-end airbag 3 reaches a threshold value, the safety control valve 10 is opened, the protection air in the near-end airbag 3 enters a welding seam area from the safety control valve 10, and after the concentration of the protection air in the welding seam area reaches the welding requirement, welding operation can be started.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a protective gas plugging device among pipeline welding process, includes near-end block structure (1) and distal end block structure (2), its characterized in that: near-end block structure (1) is including near-end gasbag (3), first air inflation hose (4) and first protection air pump (5), far-end block structure (2) is including far-end gasbag (6), second air inflation hose (7) and second protection air pump (8).

2. The shielding gas blocking device in the pipeline welding process according to claim 1, wherein: the near-end air bag (3) and the far-end air bag (6) are respectively provided with a sealing joint (9), and the near-end air bag (3) and the far-end air bag (6) are respectively connected with the first inflating hose (4) and the second inflating hose (7) through the sealing joints (9).

3. The shielding gas blocking device in the pipeline welding process according to claim 1, wherein: the near-end air bag (3) is communicated with the first protection air pump (5) through a first inflation hose (4), and a safety control valve (10) is arranged on the side wall of one side, away from the first protection air pump (5), of the near-end air bag (3).

4. The shielding gas blocking device in the pipeline welding process according to claim 1, wherein: the far-end air bag (6) is communicated with a second protection air pump (8) through a second inflation hose (7), and a shutoff valve (11) is arranged at one end, close to the second protection air pump (8), of the second inflation hose (7).

5. The shielding gas blocking device in the pipeline welding process according to claim 1, wherein: the near-end air bag (3) and the far-end air bag (6) are the same in shape, and the near-end air bag (3) and the far-end air bag (6) are made of soft materials and can be in a disc shape with a certain thickness after being inflated and expanded.