CN211840676U - Temporary sealing device for pipeline welding protective gas filling - Google Patents
Temporary sealing device for pipeline welding protective gas filling Download PDFInfo
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- CN211840676U CN211840676U CN201922025094.9U CN201922025094U CN211840676U CN 211840676 U CN211840676 U CN 211840676U CN 201922025094 U CN201922025094 U CN 201922025094U CN 211840676 U CN211840676 U CN 211840676U
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Abstract
The utility model relates to a temporary sealing device for pipeline welding protective gas filling; the method is characterized in that: comprises an air bag, a three-way pipe, a threading device, an inflation and exhaust pipe and a protective gas inflation pipe; the first air bag and the second air bag are connected with two ports of the three-way pipe, and the other port of the three-way pipe is connected with an inflation and exhaust pipe; binding the three-way pipe, the inflation and exhaust pipe and the protective gas inflation pipe on the threading device; the first air bag and the second air bag are inflated after entering the pipeline and being inflated through the inflation pipe and the exhaust pipe, so that the space between the two air bags is blocked in the pipeline to form a closed environment, and then protective gas is output to the space between the two air bags through the protective gas inflation pipe. The device can quickly form a closed environment around the welded junction, is simple and convenient to operate, has strong repeated practicability, effectively reduces the inflation quantity of protective gas, shortens the operation time, and saves the construction period.
Description
Technical Field
The utility model relates to a pipeline welding field specifically is a interim closing means that pipeline welding protective gas filled.
Background
When the pipeline is welded, the pipeline welding process of partial materials requires, and a welding point needs to be filled with protective gas in the welding process, so that the welding point is isolated from air, and the welding quality can be ensured, for example, the stainless steel pipeline welding requires that the pipeline is filled with argon in the welding process. During field welding, most of the common methods are that sponge or other blocking objects are placed at the front end and the rear end of a welding line in a pipeline for sealing, and argon is continuously filled in a sealed space; the defects are that the temporarily placed blockage cannot be completely sealed, the diffusion of welding protective gas is fast, and the construction cost is increased; when a long-distance pipeline touches a mouth for welding construction, especially a large-diameter pipeline touches a mouth for welding, a blocking object cannot be placed in the front and back 1 meter of a welding point, the blocking object needs to be placed at the far end of the pipeline for sealing, a large amount of protective gas needs to be filled in the pipeline, air in the pipeline is difficult to discharge, and the construction cost is increased while the welding quality is influenced.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned defect, provide a can establish the device of temporarily closed region and being convenient for remove at arbitrary position in the pipeline.
In order to achieve the above object, the present invention is realized as follows:
a temporary sealing device for pipeline welding protective gas filling comprises a first air bag, a second air bag, a three-way pipe, a threading device, an air bag inflation and exhaust pipe and a protective gas inflation pipe, wherein the first air bag and the second air bag are respectively connected with two ports of the three-way pipe, and the other port of the three-way pipe is connected with the air bag inflation and exhaust pipe; the threading device is a traction rope, the three-way pipe, the air bag inflation and exhaust pipe and the protective gas inflation pipe are respectively bound on the threading device, the air bag inflation and exhaust pipe and the protective gas inflation pipe are gas conveying pipelines, and gas valves are arranged at the inlets and outlets of the air bag inflation and exhaust pipe and the protective gas inflation pipe so as to control the input and output of gas flow; the first air bag and the second air bag are inflated in the pipeline through the air bags and the exhaust pipe, and then are expanded, so that the space between the two air bags is blocked in the pipeline to form a closed environment, and protective gas is output to the space between the two air bags through the protective gas inflation pipe at the moment, so that an operation environment required by gas shielded welding is formed.
The temporary sealing device solves the problem that the long-distance and large-caliber pipeline is difficult to seal when being filled with protective gas in welding operation. The device can quickly form a closed environment around the welded junction, is simple and convenient to operate, has strong repeated practicability, effectively reduces the inflation quantity of protective gas, shortens the operation time, and saves the construction period.
Drawings
Fig. 1 is a schematic structural diagram of the device.
Detailed Description
The invention is further illustrated by the following specific examples.
As shown in figure 1, the temporary sealing device for pipeline welding protective gas filling comprises a first air bag 1, a second air bag 2, a three-way pipe 3, a threading device 4, an air bag inflation and exhaust pipe 5 and a protective gas inflation pipe 6; the first air bag 1 and the second air bag 2 are respectively connected with two ports of a three-way pipe 3, and the other port of the three-way pipe 3 is connected with an air bag inflation and exhaust pipe 5; the threading device 4 is a traction rope, the three-way pipe 3, the air bag inflation and exhaust pipe 5 and the protective gas inflation pipe 6 are respectively bound on the threading device 4, the air bag inflation and exhaust pipe 5 and the protective gas inflation pipe 6 are gas conveying pipelines, and gas valves are arranged at the inlets and outlets of the air bag inflation and exhaust pipe 5 and the protective gas inflation pipe 6 so as to control the input and output of gas flow; the first air bag 1 and the second air bag 2 are inflated after entering the pipeline and being inflated through the air bags and the exhaust pipe 5, so that the space between the two air bags is blocked in the pipeline and a closed environment is formed, and at the moment, protective gas is output to the space between the two air bags through the protective gas inflation pipe 6, so that an operation environment required by gas shielded welding is formed.
The temporary sealing device solves the problem that the long-distance and large-caliber pipeline is difficult to seal when being filled with protective gas in welding operation. The device can quickly form a closed environment around the welded junction, is simple and convenient to operate, has strong repeated practicability, effectively reduces the inflation quantity of protective gas, shortens the operation time, and saves the construction period.
Claims (1)
1. The utility model provides a pipeline welding protective gas fills temporary closing device which characterized by: comprises a first air bag (1), a second air bag (2), a three-way pipe (3), a threading device (4), an air bag inflation and exhaust pipe (5) and a protective gas inflation pipe (6); the first air bag (1) and the second air bag (2) are respectively connected with two ports of the three-way pipe (3), and the other port of the three-way pipe (3) is connected with an air bag inflation and exhaust pipe (5); the threading device (4) is a traction rope, the three-way pipe (3), the air bag inflation and exhaust pipe (5) and the protective gas inflation pipe (6) are respectively bound on the threading device (4), the air bag inflation and exhaust pipe (5) and the protective gas inflation pipe (6) are gas conveying pipelines, and gas valves are arranged at the inlets and outlets of the air bag inflation and exhaust pipe (5) and the protective gas inflation pipe (6) so as to control the input and output of gas flow; the first air bag (1) and the second air bag (2) are inflated after entering the pipeline and being inflated through the air bags and the exhaust pipe (5), so that the space between the two air bags is blocked in the pipeline to form a closed environment, and protective gas is output to the space between the two air bags through the protective gas inflation pipe (6) at the moment, so that an operation environment required by gas shielded welding is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922025094.9U CN211840676U (en) | 2019-11-21 | 2019-11-21 | Temporary sealing device for pipeline welding protective gas filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922025094.9U CN211840676U (en) | 2019-11-21 | 2019-11-21 | Temporary sealing device for pipeline welding protective gas filling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211840676U true CN211840676U (en) | 2020-11-03 |
Family
ID=73219103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922025094.9U Active CN211840676U (en) | 2019-11-21 | 2019-11-21 | Temporary sealing device for pipeline welding protective gas filling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211840676U (en) |
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2019
- 2019-11-21 CN CN201922025094.9U patent/CN211840676U/en active Active
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