CN201116643Y - Rectangular round angle corrugated pipe - Google Patents
Rectangular round angle corrugated pipe Download PDFInfo
- Publication number
- CN201116643Y CN201116643Y CNU2007200449533U CN200720044953U CN201116643Y CN 201116643 Y CN201116643 Y CN 201116643Y CN U2007200449533 U CNU2007200449533 U CN U2007200449533U CN 200720044953 U CN200720044953 U CN 200720044953U CN 201116643 Y CN201116643 Y CN 201116643Y
- Authority
- CN
- China
- Prior art keywords
- corrugated pipe
- welding seams
- bellows
- weld seam
- fillet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A rectangle round corner corrugated pipe comprises four corners as 1/4 circle, wherein the pipe body is provided with welding seams parallel with axis and distanced from the four corners at least 500mm, the pipe body is provided with four welding seams while two welding seams are preferred. The utility model has less welding seams, low production cost and long distance between welding seams and arc portions, thereby reducing welding hardness and stress. The corrugated pipe is hard to fatigue damage. And the rectangle round corner corrugated pipe expansion joint produced with the utility model has high quality and long service life.
Description
Technical field
The utility model relates to a kind of metal bellows, particularly the welding type rectangle fillet bellows.
Background technique
The bellows expansion joint of being made by metal bellows produces the compensator of dimensional changes as a kind of pipeline or equipment of compensating by reason such as expand with heat and contract with cold, and uses very extensive.According to the difference of application, expansion joint has the branch of circle, rectangle.Four of bellows jiaos generally have fillet in the rectangle expansion joint, the processing of rectangle fillet bellows at present normally processes circle corrugated pipe with the hydraulic forming method earlier, again with it by slitting longitudinally into four fillet parts of dividing equally, with each fillet part and straight portion welding, form rectangle fillet bellows again by mechanical molding.This have following shortcoming by the fillet part with the straight portion welded structure: 1, weld seam has 8 at least, and workload is big, and manufacturing efficiency is low, the cost height; 2, near the weld seam at fillet place, the welding difficulty is big, and stress is big, is easy to generate fatigue ruption; 3, the fillet part is different with the straight portion compacting mechanism, also causes welding stress to increase, and welding quality is difficult to guarantee.
The model utility content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art part, provides a kind of good product quality, long service life and cost low rectangle fillet bellows.
The technical solution of the utility model is: four jiaos of rectangle fillet bellows is the circular arc of quadrant, and the weld seam that parallels to the axis is arranged on the body, and improvements are that described weld seam leaves foursquare arc section 500mm at least.
Described weld seam has four roads, is preferably twice.
According to above technological scheme, the utility model can adopt forming die on press machine, be processed into two ends band long enough (500mm at least) straight flange, bending part is " L " shape or " door " shape flexural wave card of quadrant, again that its end face is integrally welded, this rectangle fillet bellows not only weld seam is few, and weld seam leaves fillet part 500mm at least, thereby can cut down finished cost, reduce welding difficulty and welding stress, bellows is not easy to produce fatigue ruption, improve the quality of products, increase the service life.
Description of drawings
Accompanying drawing is the utility model cross-sectional configuration schematic representation.
Embodiment
Further specify the utility model embodiment below in conjunction with accompanying drawing.
Example one: rectangle fillet bellows is made of the circular arc portion 1 and the straight portion 2 of four jiaos quadrant, and twice weld seam 3 is positioned at the stage casing of relative straight portion, weld seam leave circular arc portion apart from a=600mm.
Example two: rectangle fillet bellows is made of the circular arc portion 1 and the straight portion 2 of four jiaos quadrant, and weld seam 3 has four roads, lays respectively at the stage casing of each straight portion, leave circular arc portion apart from a=550mm.
Claims (3)
1, a kind of rectangle fillet bellows, four jiaos of rectangular tube is the circular arc of quadrant, and the weld seam that parallels to the axis is arranged on the body, it is characterized in that described weld seam leaves foursquare arc section 500mm at least.
2, by the described rectangle fillet bellows of claim 1, it is characterized in that described weld seam has four roads.
3, by the described rectangle fillet bellows of claim 1, it is characterized in that described weld seam has twice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200449533U CN201116643Y (en) | 2007-11-20 | 2007-11-20 | Rectangular round angle corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200449533U CN201116643Y (en) | 2007-11-20 | 2007-11-20 | Rectangular round angle corrugated pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201116643Y true CN201116643Y (en) | 2008-09-17 |
Family
ID=39991217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200449533U Expired - Fee Related CN201116643Y (en) | 2007-11-20 | 2007-11-20 | Rectangular round angle corrugated pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201116643Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310247A (en) * | 2011-08-31 | 2012-01-11 | 上海锅炉厂有限公司 | Welding process used for feeding funnel processing |
| CN103148308A (en) * | 2013-03-27 | 2013-06-12 | 江苏宏博机械制造有限公司 | Rectangular corrugated pipe |
| CN112719668A (en) * | 2020-12-24 | 2021-04-30 | 中冶城市投资控股有限公司 | R angle reducing method and structure of finished rectangular pipe |
-
2007
- 2007-11-20 CN CNU2007200449533U patent/CN201116643Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310247A (en) * | 2011-08-31 | 2012-01-11 | 上海锅炉厂有限公司 | Welding process used for feeding funnel processing |
| CN103148308A (en) * | 2013-03-27 | 2013-06-12 | 江苏宏博机械制造有限公司 | Rectangular corrugated pipe |
| CN112719668A (en) * | 2020-12-24 | 2021-04-30 | 中冶城市投资控股有限公司 | R angle reducing method and structure of finished rectangular pipe |
| CN112719668B (en) * | 2020-12-24 | 2022-07-15 | 中冶城市投资控股有限公司 | R angle reducing method and structure of finished rectangular pipe |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20161120 |