CN211804338U - Be used for P91 pipeline welding inner wall argon filling device - Google Patents
Be used for P91 pipeline welding inner wall argon filling device Download PDFInfo
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- CN211804338U CN211804338U CN201922089028.8U CN201922089028U CN211804338U CN 211804338 U CN211804338 U CN 211804338U CN 201922089028 U CN201922089028 U CN 201922089028U CN 211804338 U CN211804338 U CN 211804338U
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- argon filling
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Abstract
The utility model relates to an argon filling device for welding inner walls of P91 pipelines. The welding device is simple in structure, convenient to use, cost-saving, and capable of improving welding quality and working efficiency. The utility model discloses argon filling device's structure is the wheel hub type, is provided with ring shape sealing rubber pad on the outer circumference of two rims of wheel hub type argon filling device, is provided with ring shape body on the middle part periphery of two rims, and wheel hub type argon filling device's center is provided with the gas tube that one end was sealed, is connected through the a plurality of cavity body that the equipartition set up between gas tube and the wheel hub type argon filling device, the inboard periphery of ring shape body on be provided with the through-hole the same with cavity body number, the equipartition is provided with a plurality of exhaust hole on the periphery of the outside, the both ends of cavity body communicate with each other with the through-hole and the gas tube of the inboard periphery of circular body respectively, the open end.
Description
Technical Field
The utility model relates to an argon filling device for welding inner walls of P91 pipelines.
Background
At present, in the field of petrochemical engineering construction, when pipelines made of stainless steel and special materials are welded, in order to guarantee welding quality and prevent root oxidation in the welding process, inert gas argon is generally required to be filled into the pipelines to isolate air in the pipeline welding process.
The following 2 protection methods are common argon filling protection methods:
one is to use sponge, rubber plate and other materials to plug the two ends of the pipeline, then use adhesive plaster to plug the outside of the welding seam, form a closed space and then continuously fill argon, and remove the adhesive plaster at the welding seam welding position in the welding process to weld; when the method is used for welding a pipeline with a large pipe diameter and a long pipeline, the gas replacement time is long, the argon consumption is large, and the engineering construction cost is high;
the other argon filling method is to manufacture a simple protective cover, only carry out argon filling protection on the back of a welding position in the welding process, the argon filling mode is only suitable for one person to carry out backing welding, and for some pipes with large pipe diameters and pipeline welded junctions with thick pipe walls, the backing welding needs two persons to be symmetrically distributed and carry out backing welding synchronously in actual construction to achieve low working efficiency.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an overcome the weak point in the background art, provide an argon filling device for P91 pipeline welding inner wall, its simple structure, convenient to use, practice thrift the cost, improve welding quality, improve work efficiency.
For solving the problems existing in the prior art, the technical scheme of the utility model is that: a device for welding an inner wall and filling argon for a P91 pipeline is characterized in that: the structure of the argon filling device is a hub type, circular ring-shaped sealing rubber pads are arranged on the outer circumferences of two rims of the hub type argon filling device, circular ring-shaped pipe bodies are arranged on the middle circumferential surfaces of the two rims, an inflation pipe with one end sealed is arranged at the center of the hub type argon filling device, the inflation pipe and the hub type argon filling device are connected through a plurality of hollow pipe bodies which are uniformly distributed, through holes with the same number as the hollow pipe bodies are formed in the inner circumferential surface of each circular ring-shaped pipe body, a plurality of exhaust holes are uniformly distributed in the outer circumferential surface of each circular ring-shaped pipe body, two ends of each hollow pipe body are respectively communicated with the through holes and the inflation pipe of the inner circumferential surface of each circular pipe.
One end of the inflation tube is connected with the rubber tube through the nozzle.
The hollow pipe body is provided with 3 at least.
The gas-filled tube is in a hollow step column shape.
The argon filling device is made of copper-nickel alloy.
Compared with the prior art, the utility model has the advantages as follows:
1. when the utility model is used for welding the welding seam of the large pipe, the working efficiency is improved while the using amount of argon is greatly reduced, and the welding quality is also ensured;
2. the utility model discloses simple structure, convenient to use, can improve work efficiency and welding quality when practicing thrift the cost.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a left side view of the present invention;
1-sealing rubber pad, 2-argon filling device, 3-exhaust hole, 4-inflation tube, 5-rubber tube, 6-circular tube body and 7-hollow tube body.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides an argon filling device for welding an inner wall of a P91 pipeline, which comprises a sealing rubber gasket 1, a hub type argon filling device 2, an exhaust hole 3, an inflation tube 4, a rubber tube 5, an annular tube body 6 and a hollow tube body 7, as shown in FIGS. 1 and 2;
the argon filling device 2 is in a hub shape and made of copper-nickel alloy; the outer circumferences of two rims of the hub type argon filling device 2 are fixedly provided with annular sealing rubber pads 1 through screws, the middle circumferential surfaces of the two rims are provided with annular tube bodies 6, the center of the hub type argon filling device 2 is provided with a hollow stepped columnar gas filling tube 4 with one end sealed, a hollow handle 4 is connected with the hub type argon filling device 2 through 3 uniformly distributed hollow tube bodies 7, the inner circumferential surface of each annular tube body 6 is provided with 3 through holes, the outer circumferential surface of each annular tube body is uniformly provided with a plurality of exhaust holes 3, 3 exhaust holes are connected with the through holes on the inner circumferential surface of the circular tube body 6 at one end of each hollow tube body 7, and the other end of each annular tube body is communicated with the hollow handle;
the open end of the inflation tube 4 is connected with a rubber tube 5 through a nozzle.
The utility model discloses a working process:
before welding a large pipe, the gas outlet of the argon cylinder is connected with the rubber tube 5, a worker places the argon filling device at the welding seam of the welded pipe, two rims of the argon filling device 2 are arranged at two sides of the welding seam, because sealing rubber pads are arranged on the outer circumferences of the two rims of the argon filling device 2 and are in contact plugging with the inner wall of the pipe to form a sealed space, and the welding seam is sealed by using aluminum foil adhesive tapes outside the welding seam, after the gas outlet of the argon cylinder is opened, argon can back argon the welding seam, so that a sealed argon chamber is achieved, the welding requirement is met, when 2 persons need to bottom the large pipe diameter and weld at the same time, the argon filling tool can bottom the welding seam along the pipe wall when being placed at the welding seam, the working efficiency is greatly improved, and the argon cost is saved compared with the traditional plugging argon filling mode.
The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.
Claims (5)
1. A device for welding an inner wall and filling argon for a P91 pipeline is characterized in that: the structure of the argon filling device (2) is wheel hub type, the outer circumferences of two rims of the wheel hub type argon filling device (2) are provided with circular sealing rubber pads (1), the middle circumferential surfaces of the two rims are provided with circular tube bodies (6), the center of the wheel hub type argon filling device (2) is provided with an inflation tube (4) with one end sealed, the inflation tube (4) is connected with the wheel hub type argon filling device (2) through a plurality of hollow tube bodies (7) which are uniformly distributed, the inner circumferential surface of the circular tube body (6) is provided with through holes with the same number as the hollow tube bodies (7), the outer circumferential surface is uniformly provided with a plurality of exhaust holes, two ends of the hollow tube body (7) are respectively communicated with the through holes on the inner circumferential surface of the circular tube body (6) and the inflation tube (4), and the open end of the inflation tube (4) is connected with the rubber tube (5).
2. The argon filling device for the welding inner wall of the P91 pipeline according to claim 1, wherein: one end of the air charging pipe (4) is connected with the rubber pipe (5) through a nozzle.
3. The argon filling device for the welding inner wall of the P91 pipeline as claimed in claim 1 or 2, wherein: the hollow pipe bodies (7) are at least provided with 3.
4. The argon filling device for the welding inner wall of the P91 pipeline according to claim 3, wherein: the inflation tube (4) is in a hollow step column shape.
5. The argon filling device for the welding inner wall of the P91 pipeline according to claim 4, wherein: the argon filling device (2) is made of copper-nickel alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922089028.8U CN211804338U (en) | 2019-11-28 | 2019-11-28 | Be used for P91 pipeline welding inner wall argon filling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922089028.8U CN211804338U (en) | 2019-11-28 | 2019-11-28 | Be used for P91 pipeline welding inner wall argon filling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211804338U true CN211804338U (en) | 2020-10-30 |
Family
ID=73030448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922089028.8U Active CN211804338U (en) | 2019-11-28 | 2019-11-28 | Be used for P91 pipeline welding inner wall argon filling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211804338U (en) |
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2019
- 2019-11-28 CN CN201922089028.8U patent/CN211804338U/en active Active
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