CN2864303Y - Multi-wave thick wall integrally-formed corrugated-type expansion joint - Google Patents
Multi-wave thick wall integrally-formed corrugated-type expansion joint Download PDFInfo
- Publication number
- CN2864303Y CN2864303Y CN 200520124753 CN200520124753U CN2864303Y CN 2864303 Y CN2864303 Y CN 2864303Y CN 200520124753 CN200520124753 CN 200520124753 CN 200520124753 U CN200520124753 U CN 200520124753U CN 2864303 Y CN2864303 Y CN 2864303Y
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- CN
- China
- Prior art keywords
- expansion joint
- type expansion
- thick wall
- corrugated
- wall integrally
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- 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 - Lifetime
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Abstract
The utility model discloses a multi-wave thick wall integrally formed waveform expansion joint. It comprises of the corrugated pipe (1) that is formed integrally. Longitudinal welding joint (3) made of integral forming technique is set upon the pipe body (2); the scope for the thickness of pipe wall (4) is 3-50mm. Because no circular welding joint (3) but longitudinal welding joint forms in the expansion joint, the manufacturing cost is lower down and the product quality is improved.
Description
Technical field
The utility model relates to a kind of compensation device of temperature deformation and the shock-damping device of mechanical shock, particularly relates to a kind of corrugated-type expansion joint.
Background technique
Corrugated-type expansion joint is a kind of good deformation-compensated element, is widely used in fields such as electric power, petrochemical industry, heat supplies.Big wave height, big pitch of waves list wavelength-division lobe are shaped and make the heavy wall corrugated-type expansion joint, and single bellows is welded together, and have a lot of circumferential welds, make quality of product reduction and manufacture cost higher easily, existing expansion joint standard of incompatibility and usage requirement.And existing integrally formed corrugated-type expansion joint, tube wall is thin, and size is little, can not satisfy the demand in market.
Summary of the invention
For solving the problem of above existence, the utility model provides a kind of many thickness of convolution wall corrugated-type expansion joint that adopts integral forming process to make, and only there is longitudinal seam in it, and does not have circumferential weld, has reduced manufacture cost, has improved quality of product.
The technological scheme that the utility model is taked is: it is made up of integrally formed bellows 1, and body 2 is provided with the longitudinal seam 3 that integral forming process is welded into, and the thickness range of tube wall 4 is 3-50mm.
Description of drawings
Fig. 1 is a half section schematic representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 1, the quantity of bellows 1 is 1-4, and promptly this expansion joint can be four kinds in single ripple, double wave, three ripples, four ripples, all belongs to individual layer.Manufacture process is as follows:
1, according to nominal diameter size and how many blankings of wave number, the circular shell ring of assembly welding makes the longitudinal seam 3 that leaves a welding on the body 2;
2, the longitudinal seam on the circular shell ring 3 carries out X ray non-destructive inspection (being called for short RT detects), reaches II level criterion of acceptability;
3, the circular shell ring of RT passed examination is vertically put into counterdie, what determine intermediate die quantity (intermediate die is that two semicircular ring are formed) according to wave number, determine intermediate die spacing (the available cushion block of pitch of waves size is regulated) according to pitch of waves size, upper die tooling is put into position, circular shell ring upper end portion then.V-arrangement and O-ring seals are adopted in sealing between upper and lower mould and the circular shell ring;
4, adopt hydraulic test pump water-filling in circular shell ring, air is discharged from the upper die plate exhaust port, treats circular shell ring at the intermediate die place slightly during projection, removes cushion block in the middle of the mould;
5, hydraulic test pump continues to circular shell ring water-filling, press machine slowly presses down, this moment, hydraulic test pump water-filling muscle power and the press machine speed of pressing down will be mated, treat that each mould of upper, middle and lower is incorporated into a time-out, hydraulic test pump stops water-filling pressurization, and press machine stops to press down, pressurize number minute, remove mould, be many thickness of convolution wall unitary moulding corrugated-type expansion joint:
6, this expansion joint linear side dimension adopts machine-tooled method to finish.
By many thickness of convolution wall corrugated-type expansion joint that integral forming process is made, its major parameter is: nominal diameter DN≤4500mm, and wave number n≤4, the thickness range of tube wall 4 is 3-50mm, is preferably 6-50mm.
Claims (2)
1, a kind of many thickness of convolution wall unitary moulding corrugated-type expansion joint is characterized in that it is made up of integrally formed bellows (1), and body (2) is provided with the longitudinal seam (3) that integral forming process is welded into, and the thickness range of tube wall (4) is 3-50mm.
2, many thickness of convolution wall unitary moulding corrugated-type expansion joint according to claim 1 is characterized in that, described bellows (1) number is 1-4, and the thickness range of described tube wall (4) is 6-50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520124753 CN2864303Y (en) | 2005-11-16 | 2005-11-16 | Multi-wave thick wall integrally-formed corrugated-type expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520124753 CN2864303Y (en) | 2005-11-16 | 2005-11-16 | Multi-wave thick wall integrally-formed corrugated-type expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2864303Y true CN2864303Y (en) | 2007-01-31 |
Family
ID=37676754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520124753 Expired - Lifetime CN2864303Y (en) | 2005-11-16 | 2005-11-16 | Multi-wave thick wall integrally-formed corrugated-type expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2864303Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102785062A (en) * | 2012-08-22 | 2012-11-21 | 南京德邦金属装备工程股份有限公司 | Titanium alloy plate expansion joint manufacturing method |
| CN103042086A (en) * | 2012-12-21 | 2013-04-17 | 山东恒通膨胀节制造有限公司 | Method for lowering formation external pressure tonnage of bellows expansion joint by reducing sectional area of cylinder |
| CN104493440A (en) * | 2014-11-28 | 2015-04-08 | 安徽盛运环保（集团）股份有限公司 | Manufacturing process of bellows expansion joint |
-
2005
- 2005-11-16 CN CN 200520124753 patent/CN2864303Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102785062A (en) * | 2012-08-22 | 2012-11-21 | 南京德邦金属装备工程股份有限公司 | Titanium alloy plate expansion joint manufacturing method |
| CN103042086A (en) * | 2012-12-21 | 2013-04-17 | 山东恒通膨胀节制造有限公司 | Method for lowering formation external pressure tonnage of bellows expansion joint by reducing sectional area of cylinder |
| CN104493440A (en) * | 2014-11-28 | 2015-04-08 | 安徽盛运环保（集团）股份有限公司 | Manufacturing process of bellows expansion joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20150310 Granted publication date: 20070131 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070131 |
|
| EXPY | Termination of patent right or utility model | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20151116 Granted publication date: 20070131 |
|
| RINS | Preservation of patent right or utility model and its discharge |