CN207656117U - A kind of air inflation protecting device for welding of pipeline - Google Patents
A kind of air inflation protecting device for welding of pipeline Download PDFInfo
- Publication number
- CN207656117U CN207656117U CN201721426114.8U CN201721426114U CN207656117U CN 207656117 U CN207656117 U CN 207656117U CN 201721426114 U CN201721426114 U CN 201721426114U CN 207656117 U CN207656117 U CN 207656117U
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- protecting device
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- pipe
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Abstract
The utility model is related to technical field of welding equipment, and in particular to a kind of air inflation protecting device for welding of pipeline.When in order to solve to be inflated protection using the full mode of filling, there is a problem of that gas usage amount is big, inflationtime length, the utility model discloses a kind of air inflation protecting device for welding of pipeline.The inflatable protective device, including two air bags, T shapes pipe and air inlet pipe；Wherein, the T shapes pipe is located between two air bags, and two air bags are connected to；One end of the air inlet pipe is connect with the air bag, and the other end is as free end for connecting air source.The air inflation protecting device for welding of pipeline of the utility model can not only reduce the usage amount of protective gas, reduce inflation cost, and can reduce inflationtime, improve volumetric efficiency.
Description
Technical field
The utility model is related to technical field of welding equipment, and in particular to a kind of air inflation protecting device for welding of pipeline.
Background technology
With the continuous development of the industrial circles such as oil, nuclear power, chemical industry, the welding demand of pipeline is continuously increased, and
The requirement of welding quality is also increasingly stringenter.For the welding of most of pipelines, the quality of backing welding is particularly important, leads to
The protection of weld metal is carried out frequently with the mode of back applying argon gas, and then ensures the quality of entire welding point.
Currently, general carry out argon-filled protection using the full mode of filling, i.e., argon gas is full of in the inner cavity of pipeline to be welded.So
And since the quality that this mode generates argon filling effect is decided by the size of inner cavity of pipe, the final welding protection that obtains
Unstable quality.When pipeline is short, inner cavity is small, argon concentration is evenly distributed, argon-filled protection significant effect；When pipeline is long, inner cavity
When big, argon concentration is unevenly distributed, then argon-filled protection effect will be deteriorated, and when this argon-filled protection mode of use, argon gas
Usage amount is big, of high cost, and the argon filling time is long, and efficiency is low.
Utility model content
When in order to solve to be inflated protection using the full mode of filling, there is a problem of that gas usage amount is big, inflationtime length,
The utility model proposes a kind of air inflation protecting device for welding of pipeline.The inflatable protective device, including two air bags, T shapes pipe with
And air inlet pipe；Wherein, the T shapes pipe is located between two air bags, and two air bags are connected to；The air inlet pipe
One end connect with the air bag, the other end is connect with air source.
Preferably, the air bag is equipped with exhaust outlet.
It is further preferred that the exhaust outlet is equipped with venting plug, and the venting plug is equipped with drawstring.
Preferably, two air bags, which use, is arranged concentrically.
It is further preferred that the air bag uses the heat resistant rubber air bag of cylindrical structure.
It is further preferred that the T shapes pipe is located on the axis of two air bags.
Preferably, the free end of the T shapes pipe is equipped with pneumatic control valve.
It is further preferred that the free end of the air inlet pipe is equipped with quick connector.
Using air inflation protecting device for welding of pipeline provided by the utility model, when welding is grouped in subsidiary conduit, have
Following advantageous effect：
1, in the present invention, group closes the pipeline to be welded of gap both sides by using two air bags,
To form regional area of the encirclement group to gap, and then protective gas input is carried out to the regional area by T shapes pipe, to
Realize the protection to welding.In this way, the input area by being precisely controlled protective gas, can not only reduce making for protective gas
Dosage reduces cost, and can accelerate the speed that pours of protective gas, improves volumetric efficiency.Further, it is also possible to improve welding
In the process, the stability of protective gas concentration improves final welding quality.
2, in the present invention, by the way that pneumatic control valve is arranged in the free end of T shape pipes, protection gas can not only be controlled
Body inputs the sequencing of different zones, i.e., the expansion of air bag is rapidly completed first, forms inflation area, then carries out again to this
The charge operation of inflation area is improved to greatest extent to reduce the waste that leaks of protective gas in gas replenishment process to protection
The service efficiency of gas, and the protective gas of inside air bag can also be made to remain certain pressure by pneumatic control valve
Power keeps the steady contact with inner wall of the pipe to be welded to make air bag remain fully expanded state, improves to protecting gas
The leakproofness of body, and then stablize the concentration of protective gas, improve final welding quality.
Description of the drawings
Fig. 1 is structural schematic diagram of the utility model air inflation protecting device for welding of pipeline in use state.
Specific implementation mode
It describes in detail below in conjunction with the accompanying drawings to the technical solution of the utility model.
In conjunction with shown in Fig. 1, the air inflation protecting device for welding of pipeline of the utility model, including two air bags 1, T shapes pipe 2 and
Air inlet pipe 3.Wherein, T shapes pipe 2 is located between two air bags 1, and is connected to the inner cavity of two air bags 1 to form an entirety.Into
One end of tracheae 3 is connect with one of air bag 1, and the other end is as free end, for connecting air source.
At this point, using the utility model air inflation protecting device for welding of pipeline when, first, which is placed in be welded take over
The inside in road, and two air bags 1 are respectively placed in both sides of the group to gap.Then, by the free end of air inlet pipe 3 and air source into
Row connection is filled with protective gas into two air bags 1 simultaneously by T shapes pipe 2, two air bags 1 is made gradually to expand and be supported on group
It is enclosed in intermediate region to the both sides in gap, and then by the free end of T shapes pipe 2.Then, by air inlet pipe 3 to two gas
Protective gas is poured in the intermediate region of capsule 1, realizes the accurate gas-filled protective to welding position.
Preferably, in the present invention, the identical air bag 1 of two appearance and sizes is selected, and two air bags 1 are carried out
It is arranged concentrically.In this way, when being inflated expansion to two air bags 1, synchronism that two air bags 1 can be kept to expand and with
The synchronism of inner wall of the pipe contact to be welded, to ensure the stability and stationarity of air bag 1 and tube contacts process to be welded.
It is further preferred that heat resistant rubber air bag of the air bag 1 using cylindrical structure, to ensure that air bag 1 expands completely
The band can between the inner wall of pipeline to be welded afterwards with one fixed width, reduces the leakage quantity that leaks of protective gas, ensures
The stability of protective gas concentration between two air bags 1.
In addition, in the present invention, T shapes pipe 2 is fixed on the axis of two air bags 1.In this way, ensureing two gas
In the case that capsule 1 is to 2 supporting ＆ stablizing of T shapes pipe, the free end of T shapes pipe 2 can be made as close to the axis position of pipeline to be welded
Set, to allow 2 free end of T shapes pipe export protective gas evenly spread out as soon as possible, improve gas replenishment process speed and
The uniformity of protective gas dispersion.
Preferably, in the present invention, the end face far from pipe string gap to be welded side is equipped with row in air bag 1
Gas port 11.Wherein, in this city embodiment, exhaust outlet 11 is blocked by venting plug 4, meanwhile, it is equipped with and draws on venting plug 4
Rope 5.In this way, after completing the welding of group of pipeline and stopping inputting protective gas, it is only necessary to drawstring 5 be pulled to make 4 He of venting plug
Exhaust outlet 11 is detached from, you can the discharge to protective gas in two air bags 1 is completed, to fill the gas-filled protective of the utility model
Set taking-up.
In addition, in the present invention, a pneumatic control valve 6 can also be arranged in the free end of T shapes pipe 2, for controlling
The unlatching of 2 free end of T shapes pipe processed.In this way, in the expansion process of air bag 1, the free end of T shapes pipe 2 is made by pneumatic control valve 6
It is closed, to make all gas of input fully enter inside two air bags 1, improves the expansion speed of two air bags 1
Degree.When two air bags 1 complete expansion, and after contacting with inner wall of the pipe to be welded completely, continue to input with protective gas,
Gas pressure inside T shapes pipe 2 gradually rises, until opening pneumatic control valve 6, the protective gas inputted at this time is made to fully enter
Region between two air bags 1.
In addition, the free end of air inlet pipe 3 is also provided with a quick connector 7, in order to the connection of air inlet pipe 3 and disconnected
It opens, to improve the connection speed of air inlet pipe 3 and air source efferent duct, improves operating efficiency.
Claims (8)
1. a kind of air inflation protecting device for welding of pipeline, which is characterized in that including two air bags, T shapes pipe and air inlet pipe；Wherein,
The T shapes pipe is located between two air bags, and two air bags are connected to；One end of the air inlet pipe and the gas
Capsule connects, and the other end is as free end for connecting air source.
2. air inflation protecting device for welding of pipeline according to claim 1, which is characterized in that the air bag is equipped with exhaust
Mouthful.
3. air inflation protecting device for welding of pipeline according to claim 2, which is characterized in that the exhaust outlet is equipped with exhaust
Plug, and the venting plug is equipped with drawstring.
4. air inflation protecting device for welding of pipeline according to claim 1, which is characterized in that two air bags are using concentric
Setting.
5. air inflation protecting device for welding of pipeline according to claim 4, which is characterized in that the air bag is tied using cylindrical
The heat resistant rubber air bag of structure.
6. air inflation protecting device for welding of pipeline according to claim 5, which is characterized in that the T shapes pipe is located at two institutes
It states on the axis of air bag.
7. according to the air inflation protecting device for welding of pipeline described in any one of claim 1-6, which is characterized in that the T shapes
The free end of pipe is equipped with pneumatic control valve.
8. air inflation protecting device for welding of pipeline according to claim 7, which is characterized in that the free end of the air inlet pipe is set
There is quick connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721426114.8U CN207656117U (en) | 2017-10-31 | 2017-10-31 | A kind of air inflation protecting device for welding of pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721426114.8U CN207656117U (en) | 2017-10-31 | 2017-10-31 | A kind of air inflation protecting device for welding of pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207656117U true CN207656117U (en) | 2018-07-27 |
Family
ID=62938685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721426114.8U Active CN207656117U (en) | 2017-10-31 | 2017-10-31 | A kind of air inflation protecting device for welding of pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207656117U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109693059A (en) * | 2019-03-13 | 2019-04-30 | 重庆科技学院 | A kind of pipeline welding back side inflatable protective device |
| CN109848530A (en) * | 2019-03-12 | 2019-06-07 | 中核工程咨询有限公司 | A kind of water-soluble paper substitute tooling and using method thereof |
| CN113634923A (en) * | 2021-10-15 | 2021-11-12 | 徐州博尔纳机械制造有限公司 | Semi-surrounding cooling type flexible clamping type laser cutting and scribing integrated machine |
| CN118438133A (en) * | 2024-06-04 | 2024-08-06 | 安徽省特种设备检测院 | Metal pipeline welding auxiliary device and use method |
-
2017
- 2017-10-31 CN CN201721426114.8U patent/CN207656117U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848530A (en) * | 2019-03-12 | 2019-06-07 | 中核工程咨询有限公司 | A kind of water-soluble paper substitute tooling and using method thereof |
| CN109693059A (en) * | 2019-03-13 | 2019-04-30 | 重庆科技学院 | A kind of pipeline welding back side inflatable protective device |
| CN109693059B (en) * | 2019-03-13 | 2020-10-09 | 重庆科技学院 | A kind of pipeline welding back inflatable protection device |
| CN113634923A (en) * | 2021-10-15 | 2021-11-12 | 徐州博尔纳机械制造有限公司 | Semi-surrounding cooling type flexible clamping type laser cutting and scribing integrated machine |
| CN118438133A (en) * | 2024-06-04 | 2024-08-06 | 安徽省特种设备检测院 | Metal pipeline welding auxiliary device and use method |
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