CN210088255U - Metal corrugated pipe and flange connecting structure - Google Patents
Metal corrugated pipe and flange connecting structure Download PDFInfo
- Publication number
- CN210088255U CN210088255U CN201920788097.5U CN201920788097U CN210088255U CN 210088255 U CN210088255 U CN 210088255U CN 201920788097 U CN201920788097 U CN 201920788097U CN 210088255 U CN210088255 U CN 210088255U
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- Prior art keywords
- flange
- corrugated
- neck
- welding
- pipe
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- 239000002184 metal Substances 0.000 title claims abstract description 51
- 238000003466 welding Methods 0.000 claims abstract description 31
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model discloses a corrugated metal pipe and flange joint structure relates to corrugated metal pipe technical field. Corrugated metal pipe and flange joint structure, including corrugated metal pipe and flange, corrugated metal pipe include corrugated pipe portion and set up in the connecting portion at corrugated pipe portion both ends, the flange is provided with the flange neck, the flange neck is the micro-cone frustum shape, the connecting portion cover is established take place deformation on the flange neck with the conical surface of flange neck closely laminates, and will through the welding the flange neck with connecting portion fixed connection. The utility model discloses corrugated metal pipe and flange joint structure have eliminated stress concentration, and the difficult fracture of welding department, long service life.
Description
Technical Field
The utility model relates to a corrugated metal pipe technical field, concretely relates to corrugated metal pipe and flange's connection structure.
Background
In a gas engine fuel gas delivery pipeline system, a metal corrugated pipe is often used as a flexible pressure-resistant pipe fitting to compensate for mutual displacement of a pipeline or machine and equipment connection ends, absorb vibration energy, reduce stress and the like caused by manufacturing errors in an installation process, and the like. The metal corrugated pipe can play roles in vibration reduction, noise reduction and the like, and has the characteristics of good flexibility, light weight, corrosion resistance, fatigue resistance, high and low temperature resistance and the like.
At present, a metal corrugated pipe pipeline structure generally adopts a method that two flanges are respectively welded at two ends of a metal corrugated pipe and then are connected with other pipelines through the flanges, and argon arc welding or laser welding is usually adopted for welding. A common welding structure of a metal corrugated pipe and a flange is shown in fig. 2, 3 and 4, in fig. 2, the end face of a flange neck 4 of a flange d is jointed and welded with the end face of a metal corrugated pipe c, when a gas pipeline is clamped due to installation or the gas pipeline vibrates during the operation of an engine, and the like, the generated stress is directly concentrated at a welding point 7, so that open welding is easily caused, and gas is leaked; in fig. 3 and 4, the flange neck 6 of the flange f is cylindrical, and the flange neck 6 of the metal corrugated pipe e in fig. 3 is inserted into the connecting part 5 of the metal corrugated pipe e, or in fig. 4, the connecting part 5 of the metal corrugated pipe e is inserted into the flange neck 6 and then welded, and due to the existence of the gap, the final stress is still mostly concentrated around the welding seam 8, which causes the open welding leakage.
SUMMERY OF THE UTILITY MODEL
To the above defect that prior art exists, the utility model provides a corrugated metal pipe and flange joint structure, this corrugated metal pipe and flange joint structure have eliminated stress concentration, and the difficult fracture of welding department, long service life.
In order to solve the technical problem, the utility model discloses a technical scheme is:
corrugated metal pipe and flange joint structure, including corrugated metal pipe and flange, corrugated metal pipe include corrugated pipe portion and set up in the connecting portion at corrugated pipe portion both ends, the flange is provided with the flange neck, the flange neck is the micro-cone frustum shape, the connecting portion cover is established take place deformation on the flange neck with the conical surface of flange neck closely laminates, and will through the welding the flange neck with connecting portion fixed connection.
Wherein, the welding adopts argon arc welding or laser welding.
Wherein, the metal corrugated pipe is a stainless steel corrugated pipe.
By adopting the technical scheme, the beneficial effects of the utility model are that:
the utility model provides a corrugated metal pipe and flange joint structure, because the flange neck of flange is little circular truncated cone shape, corrugated metal pipe's connecting portion cover is established and is taken place deformation and flange neck's conical surface and closely laminate the back and compare connecting portion and flange neck fixed connection through the welding again on the flange neck, compared with the connection structure among the prior art, the utility model discloses corrugated metal pipe and flange joint structure are at the in-process that uses, do not have the clearance between corrugated metal pipe's connecting portion and the flange neck, and the stress that is used on corrugated metal pipe most will be undertaken by the conical surface of flange neck, and the stress of welding position department is less, is difficult to the fracture, long service life.
Drawings
Fig. 1 is a schematic structural view of a connection structure of a metal corrugated pipe and a flange according to the present invention;
fig. 2, 3 and 4 are schematic views of a connection structure of a metal corrugated pipe and a flange in the prior art;
in the figure: a-metal corrugated pipe, b-flange, c-metal corrugated pipe, d-flange, e-metal corrugated pipe, f-flange, 1-corrugated pipe part, 2-connecting part, 3-flange neck, 4-flange neck, 5-connecting part, 6-flange neck, 7-welding spot and 8-welding seam.
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.
As shown in fig. 1, the metal bellows and flange connection structure includes a metal bellows a and a flange b, the metal bellows a includes a bellows portion 1 and connecting portions 2 disposed at two ends of the bellows portion 1, the flange b is provided with a flange neck 3, the flange neck 3 is in a shape of a micro-truncated cone, the connecting portions 2 are sleeved on the flange neck 3 to be deformed and tightly attached to a conical surface of the flange neck 3, and the flange neck 3 is fixedly connected to the connecting portions 2 by welding. The smaller the taper of the flange neck 3 in this embodiment is, the better, and a designer can select a proper taper for connection according to actual needs and product performance.
As shown in fig. 1, the metal bellows a in this embodiment is a stainless steel bellows, and the welding is performed by argon arc welding or laser welding, but in practical applications, the metal bellows is not limited to the stainless steel bellows, and other metal bellows are also applicable.
Before welding, the flange b applies force in the axial direction to insert the flange neck 3 of the flange b into an inner hole of the connecting part 2 of the metal corrugated pipe a, the connecting part 2 of the metal corrugated pipe a is of a thin-wall structure and deforms under the action of the axial force to be tightly attached to the conical surface of the flange neck 3, and then welding and heat treatment are carried out to eliminate welding stress.
The utility model provides an in-process that corrugated metal pipe and flange joint structure used, because there is not the clearance between connecting portion 2 and the flange neck 3, the stress that is used in corrugated metal pipe a most will be undertaken by the conical surface of flange neck 3, and the stress of welding position department is less, is difficult to the fracture, long service life.
The present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes without the labor of creation from the above conception, which falls within the protection scope of the present invention.
Claims (3)
1. Corrugated metal pipe and flange joint structure, including corrugated metal pipe and flange, corrugated metal pipe include corrugated pipe portion and set up in the connecting portion at corrugated pipe portion both ends, the flange is provided with the flange neck, its characterized in that, the flange neck is little circular truncated cone shape, the connecting portion cover is established take place on the flange neck deformation with the conical surface of flange neck closely laminates, and will through the welding the flange neck with connecting portion fixed connection.
2. A metal bellows and flange connection according to claim 1, wherein the welding is argon arc welding or laser welding.
3. A metal bellows and flange connection according to claim 1, wherein the metal bellows is a stainless steel bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920788097.5U CN210088255U (en) | 2019-05-29 | 2019-05-29 | Metal corrugated pipe and flange connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920788097.5U CN210088255U (en) | 2019-05-29 | 2019-05-29 | Metal corrugated pipe and flange connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210088255U true CN210088255U (en) | 2020-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920788097.5U Active CN210088255U (en) | 2019-05-29 | 2019-05-29 | Metal corrugated pipe and flange connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210088255U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111986950A (en) * | 2020-07-08 | 2020-11-24 | 平高集团有限公司 | Bellows subassembly, vacuum interrupter and vacuum circuit breaker for vacuum interrupter |
| CN111986951A (en) * | 2020-07-08 | 2020-11-24 | 平高集团有限公司 | Bellows subassembly, vacuum interrupter and vacuum circuit breaker |
| CN113814562A (en) * | 2021-10-13 | 2021-12-21 | 宜宾上交大新材料研究中心 | Laser welding method |
-
2019
- 2019-05-29 CN CN201920788097.5U patent/CN210088255U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111986950A (en) * | 2020-07-08 | 2020-11-24 | 平高集团有限公司 | Bellows subassembly, vacuum interrupter and vacuum circuit breaker for vacuum interrupter |
| CN111986951A (en) * | 2020-07-08 | 2020-11-24 | 平高集团有限公司 | Bellows subassembly, vacuum interrupter and vacuum circuit breaker |
| CN111986951B (en) * | 2020-07-08 | 2022-07-05 | 平高集团有限公司 | Bellows subassembly, vacuum interrupter and vacuum circuit breaker |
| CN113814562A (en) * | 2021-10-13 | 2021-12-21 | 宜宾上交大新材料研究中心 | Laser welding method |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200310 Address after: 261061 East of No. 4 Shengrui Industrial Park, 6555 Baotong East Street, Yujing Community, Qingchi Street, Weifang High-tech Zone, Shandong Province Patentee after: WEIFANG LICHUANG ELECTRONIC TECHNOLOGY CO., LTD. Address before: 261061 floor 2, East Zone, No.4 factory building, Shengrui Industrial Park, 6555 Baotong East Street, zhuojing community, Qingchi street, high tech Zone, Weifang City, Shandong Province Patentee before: Shandong Honglu Machinery Co., Ltd |