CN202660244U - Gas supplementation control component for under-gas welding - Google Patents
Gas supplementation control component for under-gas welding Download PDFInfo
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- CN202660244U CN202660244U CN 201220223797 CN201220223797U CN202660244U CN 202660244 U CN202660244 U CN 202660244U CN 201220223797 CN201220223797 CN 201220223797 CN 201220223797 U CN201220223797 U CN 201220223797U CN 202660244 U CN202660244 U CN 202660244U
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- gas
- control valve
- gas supply
- supply control
- pressure
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Abstract
The utility model provides a gas supplementation control component for under-gas welding. The gas supplementation control component comprises a gas inlet pipeline, a depressurizing control valve and two gas supplementation control valves, which are sequentially connected, wherein the two gas supplementation control valves are connected with the depressurizing control valve through a three-way pipe; and a gas inlet control valve is arranged on the gas inlet pipeline. The gas supplementation control component for the under-gas welding has the advantages that gas is continuously and stably supplemented to an operating pipeline through an upstream gas source, gas supplementation pressure is automatically controlled by using the depressurizing control valve, manual operation is avoided, pressure control is smoothened, labor intensity is reduced, labor efficiency is improved, and the safety of welding operation environment is greatly improved.
Description
Technical field
The utility model belongs to gas pressure observation and control technology field in the gas pipeline, relates in particular to a kind of gas supply control assembly that connects with gas welding.
Background technique
At gas industry, on-line emergency repair and the pipeline wiring step-down operation under pressure of stopping the supple of gas or steam is ordinary affair.The step-down operation under pressure of stopping the supple of gas or steam refers to that being depressurized to pressure with giving out of gas in the pipeline carries out the wiring of construction operation when 300-800Pa.When if overpressure is too high, in welding, the welding process, weld joint flame is too high, affects operating personnel operation, and the molten bath is difficult for formation during the too high welding of overpressure.If overpressure is crossed when hanging down, though be conducive to weld job, being difficult to control guarantees malleation in the pipeline, outside air just has the possibility of infiltrating in the pipeline, and existence is sneaked into the hidden danger that reaches explosion limit because of air; And caliber is larger or perforate is larger, more difficult control.Therefore the control of manifold pressure is extremely important, and need establish the special messenger and regulate.And special messenger's control fully by rule of thumb, and it passes through the tonifying Qi of time opening upstream valve, and guarantee malleation by U-shaped pressure gauge monitoring.Its defective is exactly, and tonifying Qi needs artificial fixed cycle operator, and manifold pressure is suddenly big or suddenly small, and pressure transient is unfavorable for weld job, and labor intensity is also relatively large.
Summary of the invention
The utility model has solved the pressure transient that special messenger's control valve internal pressure exists in the prior art, the technical problem that operating personnel's labor intensity is large.
For this technical problem, the utility model provides a kind of gas supply control assembly that connects with gas welding, and it controls tonifying Qi pressure automatically by pressure reduction control valve, has avoided manual operation, so that pressure control is more steady, has reduced labor intensity and has raised labour efficiency.
The technical solution of the utility model is:
A kind of gas supply control assembly that connects with gas welding, described gas supply control assembly comprise that admission line 1, pressure reduction control valve 4 and 6, two gas supply control valves of two gas supply control valves 6 of connecting successively are connected with pressure reduction control valve 4 by a three-way pipe 7; Described admission line 1 is provided with air intake control valve 2.
As further improvement of the utility model, be provided with upstream source of the gas pressure gauge 3 between described air intake control valve 2 and the pressure reduction control valve 4.
As further improvement of the utility model, be provided with tonifying Qi pressure gauge 5 between described three-way pipe 7 and the pressure reduction control valve 4.
As further improvement of the utility model, the other end of one of them gas supply control valve 6 is connected with tonifying Qi pipeline 8.
As further improvement of the utility model, the other end of another gas supply control valve 6 is connected with outlet pipe 9.
As further improvement of the utility model, the other end of another gas supply control valve 6 is connected with U-gauge.
The gas supply control assembly that connects with gas welding that the utility model provides, it passes through upstream source of the gas continous-stable to the tonifying Qi of operation pipeline, and automatically control tonifying Qi pressure by pressure reduction control valve, avoided on the one hand manual operation, so that pressure control is more steady, reduced labor intensity and raised labour efficiency, the Security of welding operation environment is promoted greatly.
Description of drawings
The structural representation of the gas supply control assembly that connects with gas welding that Fig. 1 provides for the utility model.
Wherein, 1---admission line, 2---air intake control valve, 3---upstream source of the gas pressure gauge, 4---pressure reduction control valve, 5---the tonifying Qi pressure gauge, 6---the gas supply control valve, 7---three-way pipe, 8---the tonifying Qi pipeline, 9---outlet pipe.
Embodiment
Clearer for technical problem, technological scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model provides a kind of gas supply control assembly that connects with gas welding, as shown in Figure 1, comprises admission line 1, pressure reduction control valve 4 and two gas supply control valves 6 of connecting successively.Two gas supply control valves 6 are connected with pressure reduction control valve 4 by a three-way pipe 7.
Described admission line 1 is provided with air intake control valve 2.Be provided with upstream source of the gas pressure gauge 3 between described air intake control valve 2 and the pressure reduction control valve 4.Be provided with tonifying Qi pressure gauge 5 between described three-way pipe 7 and the pressure reduction control valve 4.The other end of one of them gas supply control valve 6 is connected with tonifying Qi pipeline 8.The exhaust step-down namely was connected with outlet pipe 9, as shown in Figure 1 when another gas supply control valve 6 can be used for operation pipeline overpressure on the one hand.
In addition, when the tonifying Qi pressure gauge damages, also can connect at the other end of this another gas supply control valve 6 U-gauge and be used for the prison pressure.This gas supply control valve 6 is in closed condition when normal.
In the utility model, described admission line 1, outlet pipe 9 all can be metallic hose.
The gas supply control assembly that the utility model provides, from to diffuse the pressure regulator that rear step-down reaches the pressure permission range by control in the prior art different, key point of the present utility model is in welding process, to the tonifying Qi of operation pipeline, guarantee that pipeline pressure is in malleation (controlled in the 300-800Pa scope more accurate pressure) by upstream source of the gas continous-stable.
The tonifying Qi process of the gas supply control assembly that connects with gas welding that the utility model provides is: the gas in the upstream source of the gas (being the valve well diffusion valve) is through admission line 1, and enter pressure reduction control valve 4 by air intake control valve 2 control, by pressure reduction control valve 4 gas pressure is adjusted to 300-800Pa, and carry out tonifying Qi through gas supply control valve 6, what can guarantee continous-stable rushes to repair the pipeline tonifying Qi to the downstream, so that pipeline is in steady pressure; Guarantee simultaneously the safe working environment of weld job.
To sum up, the gas supply control assembly that connects with gas welding that the utility model provides, it passes through upstream source of the gas continous-stable to the tonifying Qi of operation pipeline, and automatically control tonifying Qi pressure by pressure reduction control valve, avoided on the one hand manual operation, so that pressure control is more steady, reduced labor intensity and raised labour efficiency, the Security of welding operation environment is promoted greatly.In addition, the gas supply control assembly that connects with gas welding that the utility model provides can cause interface the well external body, is convenient to observation, and without operation in the well, personal security is protected, and applicable efficient and convenient and reliable.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. gas supply control assembly that connects with gas welding, it is characterized in that, described gas supply control assembly comprises admission line (1), pressure reduction control valve (4) and two the gas supply control valves (6) that connect successively, and two gas supply control valves (6) are connected with pressure reduction control valve (4) by a three-way pipe (7); Described admission line (1) is provided with air intake control valve (2).
2. gas supply control assembly according to claim 1 is characterized in that, is provided with upstream source of the gas pressure gauge (3) between described air intake control valve (2) and the pressure reduction control valve (4).
3. gas supply control assembly according to claim 1 and 2 is characterized in that, is provided with tonifying Qi pressure gauge (5) between described three-way pipe (7) and the pressure reduction control valve (4).
4. gas supply control assembly according to claim 1 is characterized in that, the other end of one of them gas supply control valve (6) is connected with tonifying Qi pipeline (8).
5. gas supply control assembly according to claim 4 is characterized in that, the other end of another gas supply control valve (6) is connected with outlet pipe (9).
6. gas supply control assembly according to claim 4 is characterized in that, the other end of another gas supply control valve (6) is connected with U-gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220223797 CN202660244U (en) | 2012-05-18 | 2012-05-18 | Gas supplementation control component for under-gas welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220223797 CN202660244U (en) | 2012-05-18 | 2012-05-18 | Gas supplementation control component for under-gas welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202660244U true CN202660244U (en) | 2013-01-09 |
Family
ID=47455153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220223797 Expired - Fee Related CN202660244U (en) | 2012-05-18 | 2012-05-18 | Gas supplementation control component for under-gas welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202660244U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940248A (en) * | 2017-12-07 | 2018-04-20 | 北京市燃气集团有限责任公司 | A kind of intelligence decompression monitoring management system of operation under pressure |
-
2012
- 2012-05-18 CN CN 201220223797 patent/CN202660244U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940248A (en) * | 2017-12-07 | 2018-04-20 | 北京市燃气集团有限责任公司 | A kind of intelligence decompression monitoring management system of operation under pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20180518 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |