CN202517172U - Gas protection cover for welding of zirconium and zirconium alloy pipelines - Google Patents
Gas protection cover for welding of zirconium and zirconium alloy pipelines Download PDFInfo
- Publication number
- CN202517172U CN202517172U CN 201220044932 CN201220044932U CN202517172U CN 202517172 U CN202517172 U CN 202517172U CN 201220044932 CN201220044932 CN 201220044932 CN 201220044932 U CN201220044932 U CN 201220044932U CN 202517172 U CN202517172 U CN 202517172U
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- cover body
- cover
- zirconium
- gas
- welding
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Abstract
The utility model relates to a gas protection cover for the welding of zirconium and zirconium alloy pipelines. The gas protection cover comprises a cover body which covers a weld and surrounding parts of the weld and is matched with the surface shape of a workpiece, wherein an inlet which is used for putting a welding gun into the cover body is formed at the front end of the cover body, a gas filling pipe which is connected with an external gas filling device is also arranged in the cover body, and gas distribution holes of the gas filling pipe have a dense hole structure; and a part, which is contacted with the surface of the workpiece, of the cover body is provided with a sealing device. According to the gas protection cover, the oxidation problem can be effectively solved through the dense hole structure, and protective gas can be prevented from being leaked quickly through the sealing structure.
Description
Technical field
The utility model relates to zircaloy pipeline welding technology field, and cover is dragged in the gas shield that particularly relates to the pipeline welding of a kind of zirconium and zircaloy.
Background technology
Zirconium and zircaloy have excellent nuclearity ability and decay resistance, are widely used in Nuclear Power Engineering, and progressively get into chemical industry.Because zirconium and zircaloy need inert gas shielding under the welding region condition of high temperature, it is very big therefore to weld difficulty.The greatest problem of zircaloy pipeline welding is exactly that oxidation takes place easily, thereby influences zircaloy pipeline welding quality.
Summary of the invention
The utility model technical problem to be solved provides the gas shield of the pipeline welding of a kind of zirconium and zircaloy and drags cover, can prevent oxidation.
The utility model solves the technical scheme that its technical problem adopted: provide the gas shield of the pipeline welding of a kind of zirconium and zircaloy to drag cover; Comprise cover weld seam and weld seam peripheral part and match with the surface of the work shape drag cover body; Said drag the cover body front end to have to be used for welding gun is stretched into the inlet that drags cover body inner; Said dragging also is provided with the gas tube that links to each other with extraneous aerating device in the cover body, the qi-emitting hole of said gas tube is close pore structure; Said cover body and the surface of the work contact site of dragging is provided with sealing device.
Said sealing device is a rubber strip.
Said rubber strip is embedded in and drags cover body and surface of the work contact site.
Said inlet is semicircle.
Beneficial effect
Owing to adopted above-mentioned technical scheme, the utility model compared with prior art has following advantage and good effect: the utility model is through close pore structure; After making argon gas entering protection drag cover; The butt welded seam protection that can be uniformly dispersed is dragging the cover both sides to be inlaid with resistant to elevated temperatures sealing device simultaneously, prevents that gas from running out of from both sides; Can effectively prevent the generation of problem of oxidation through close pore structure and sealing device; The utility model does not need devices such as water-cooled simultaneously, and structure is more simple, uses more convenient.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is along the structural representation of A-A line among Fig. 1.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction the utility model scope.Should be understood that in addition those skilled in the art can do various changes or modification to the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
The embodiment of the utility model relates to the gas shield of the pipeline welding of a kind of zirconium and zircaloy and drags cover; As depicted in figs. 1 and 2; Comprise cover weld seam and weld seam peripheral part and match with the surface of the work shape drag cover body 1, saidly drag cover body 1 front end to have to be used for welding gun is stretched into the inlet 2 that drags cover body inside.Said inlet 2 is semicircle, and its size drags cover inner putting in the tungsten argon arc welding gun, and can let protective gas flow out smoothly simultaneously, is unlikely to blow electric arc and waves and be advisable.
Said dragging also is provided with the gas tube 3 that links to each other with extraneous aerating device in the cover body 1, the qi-emitting hole of said gas tube 3 is close pore structure 4, and this close pore structure 4 makes argon gas get into protection and drags the butt welded seam protection that can be uniformly dispersed behind the cover.
Said cover body 1 and the surface of the work contact site of dragging is provided with sealing device 5, and said sealing device 5 can adopt rubber strip, and rubber strip is embedded in and drags cover body and surface of the work contact site, can prevent effectively that gas from running out of from both sides.The optimum size of rubber strip is the long 250mm of the wide 60mm circular arc of high 30mm, wherein, but length and width appropriate change.
Be not difficult to find that the utility model is through close pore structure, argon gas is got into protect drag cover after; The butt welded seam protection that can be uniformly dispersed is dragging the cover both sides to be inlaid with resistant to elevated temperatures sealing device simultaneously, prevents that gas from running out of from both sides; Can effectively prevent the generation of problem of oxidation through close pore structure and sealing device; The utility model does not need devices such as water-cooled simultaneously, and structure is more simple, uses more convenient.
When using the utility model to weld, every weldering 200mm need stop welding, continues the qi of chong channel ascending adversely body and protects, and after equitemperature descends, continues welding again.But the several covers that drag of polygamy carry out on a plurality of weld bonds simultaneously during welding, and are idle when avoiding the stand-by period.It was both simple to utilize the utility model to weld, effective again, was fit to on-the-spot the use.
Claims (4)
1. cover is dragged in the gas shield of the pipeline welding of zirconium and zircaloy; Comprise cover weld seam and weld seam peripheral part and match with the surface of the work shape drag cover body (1); Said drag cover body (1) front end to have to be used for welding gun is stretched into the inlet (2) that drags cover body inner; Said dragging also is provided with the gas tube (3) that links to each other with extraneous aerating device in the cover body (1), it is characterized in that, the qi-emitting hole of said gas tube (3) is close pore structure (4); Said cover body (1) and the surface of the work contact site of dragging is provided with sealing device (5).
2. cover is dragged in the gas shield of the pipeline welding of zirconium according to claim 1 and zircaloy, it is characterized in that, said sealing device (5) is a rubber strip.
3. cover is dragged in the gas shield of the pipeline welding of zirconium according to claim 2 and zircaloy, it is characterized in that, said rubber strip is embedded in and drags cover body (1) and surface of the work contact site.
4. cover is dragged in the gas shield of the pipeline welding of zirconium according to claim 1 and zircaloy, it is characterized in that, said inlet (2) is semicircle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220044932 CN202517172U (en) | 2012-02-13 | 2012-02-13 | Gas protection cover for welding of zirconium and zirconium alloy pipelines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220044932 CN202517172U (en) | 2012-02-13 | 2012-02-13 | Gas protection cover for welding of zirconium and zirconium alloy pipelines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202517172U true CN202517172U (en) | 2012-11-07 |
Family
ID=47100140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220044932 Expired - Fee Related CN202517172U (en) | 2012-02-13 | 2012-02-13 | Gas protection cover for welding of zirconium and zirconium alloy pipelines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202517172U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386564A (en) * | 2013-07-22 | 2013-11-13 | 南京德邦金属装备工程股份有限公司 | Special protecting cover for automatic welding of pipe opening of zirconium heat exchanger |
| CN103801803A (en) * | 2014-02-13 | 2014-05-21 | 安徽金威管业有限公司 | Inside weld inert gas protector |
| CN104551353A (en) * | 2014-12-19 | 2015-04-29 | 北京星通浩宇科技发展有限公司 | Arc semi-closed gas protection cover for welding pipeline and welding method |
| CN104708173A (en) * | 2015-02-26 | 2015-06-17 | 无锡奇能焊接系统有限公司 | Welding device for externally-clad stainless steel tube of clad steel plate |
| CN105269132A (en) * | 2015-11-11 | 2016-01-27 | 西安交通大学 | Weld joint real-time protection cover during welding |
| CN109500476A (en) * | 2018-10-31 | 2019-03-22 | 沪东中华造船(集团)有限公司 | A kind of titanium or titanium alloy pipe argon arc welding welding protective cover and its application method |
-
2012
- 2012-02-13 CN CN 201220044932 patent/CN202517172U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386564A (en) * | 2013-07-22 | 2013-11-13 | 南京德邦金属装备工程股份有限公司 | Special protecting cover for automatic welding of pipe opening of zirconium heat exchanger |
| CN103801803A (en) * | 2014-02-13 | 2014-05-21 | 安徽金威管业有限公司 | Inside weld inert gas protector |
| CN104551353A (en) * | 2014-12-19 | 2015-04-29 | 北京星通浩宇科技发展有限公司 | Arc semi-closed gas protection cover for welding pipeline and welding method |
| CN104551353B (en) * | 2014-12-19 | 2016-08-17 | 北京星通浩宇科技发展有限公司 | Circular arc semi-hermetic gas protective drawing cover and welding method for pipeline welding |
| CN104708173A (en) * | 2015-02-26 | 2015-06-17 | 无锡奇能焊接系统有限公司 | Welding device for externally-clad stainless steel tube of clad steel plate |
| CN105269132A (en) * | 2015-11-11 | 2016-01-27 | 西安交通大学 | Weld joint real-time protection cover during welding |
| CN109500476A (en) * | 2018-10-31 | 2019-03-22 | 沪东中华造船(集团)有限公司 | A kind of titanium or titanium alloy pipe argon arc welding welding protective cover and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20130213 |