CN2314213Y - Fully-buried high-corrosion-resistance corrugated pipe expansion joint - Google Patents
Fully-buried high-corrosion-resistance corrugated pipe expansion joint Download PDFInfo
- Publication number
- CN2314213Y CN2314213Y CN 97247609 CN97247609U CN2314213Y CN 2314213 Y CN2314213 Y CN 2314213Y CN 97247609 CN97247609 CN 97247609 CN 97247609 U CN97247609 U CN 97247609U CN 2314213 Y CN2314213 Y CN 2314213Y
- Authority
- CN
- China
- Prior art keywords
- expansion joint
- bellows
- protection
- corrugated pipe
- corrosion
- 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
Links
- 230000004224 protection Effects 0.000 claims abstract description 21
- 238000005260 corrosion Methods 0.000 claims abstract description 10
- 230000007797 corrosion Effects 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 229920000742 Cotton Polymers 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000011247 coating layer Substances 0.000 claims description 5
- 239000011253 protective coating Substances 0.000 claims description 5
- 230000002401 inhibitory effect Effects 0.000 claims description 4
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- 229920002521 macromolecule Polymers 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 3
- 239000002689 soil Substances 0.000 abstract description 3
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Diaphragms And Bellows (AREA)
- Joints Allowing Movement (AREA)
Abstract
A fully-buried high-corrosion-resistance corrugated pipe expansion joint comprises an outer sleeve, a connecting pipe, a flow guide pipe, a working corrugated pipe and a protection corrugated pipe, and is characterized in that a high-corrosion-resistance coating is coated on the inner surface of the protection corrugated pipe, and an aluminum silicate fiber cotton heat-insulating layer is filled in a cavity between the protection corrugated pipe and the connecting pipe. The expansion joint is also provided with a guide ring and an overpressure and over-pull protection device. The utility model has good corrosion resistance, is not affected even at the high temperature of 250 ℃, and has a service life of more than 20 years. And the phenomena of column instability, over-pressure and damage caused by over-pull can not occur. The device is particularly suitable for the fully-buried pipeline for underground conveying of high-temperature media in saline-alkali soil with high chloride ion content and coastal areas.
Description
The utility model relates to a kind of bellows expansion joint, especially for being embedded in underground, as to have high antiseptic property bellows expansion joint entirely, belongs to heat pipeline device technique field.
Bellows expansion joint is widely used in the delivery line of industry vapour such as oil, chemical industry, electric power, metallurgy, liquid medium, to absorb the relative displacement that is caused by temperature variation generation pipeline thermal distortion, guarantees the safe, reliable of system.Existing bellows expansion joint generally is made of housing, adapter, work bellows and protection bellows etc., and for chloride ion content high salt-soda soil and coastal area, the anti-corrosion problem of bellows does not obtain fine solution always.Particularly for pipeline fully buried, that carry high-temperature steam, corrosion phenomenon is even more serious.In addition, existing bellows expansion joint is more in wave number, the column unstable phenomenon takes place more often in distortion.Sometimes occur the overcompression state at work or when dispatching from the factory, occur the overstretching state in the pressure testing, owing to there not being protective gear to be damaged.Thereby the existing bellows expansion joint life-span is shorter.
The purpose of this utility model is to overcome the deficiency of existing bellows expansion joint, provides a kind of corrosion-resistant, high temperature resistant, and not fragile, the life-span is long, is applicable to the fully buried high corrosion-proof type bellows expansion joint of underground conveying high temperature media pipeline.
The technical solution of the utility model is: fully buried high corrosion-proof type bellows expansion joint comprises overcoat, adapter honeycomb duct, work bellows, protection bellows critical piece; improvements are that the protection bellows inside surface applies high corrosion-inhibiting coating, are filling thermal-protective coating in the cavity between protection bellows and the adapter.
Above-mentioned high corrosion-inhibiting coating is SEBF, SLF macromolecule composite coating layer, and this coating layer chemically stable is good, and good corrosion resistance is arranged, and strong adhesion, the impact strength height, and anti-bending strength is good, and the life-span is long.Above-mentioned thermal-protective coating is the aluminosilicate fiber cotton packing, and its heat-shielding performance is good, and compressibility is strong, when the fed sheet of a media temperature reaches 250 ℃, can guarantee that also the usability of coating layer is unaffected.
As further improvement of the utility model, expansion joint inside is provided with guide ring and overvoltage, crosses and draw protective gear, to improve the reliability of expansion joint, increases the service life.Guide ring is located at the adjoiner of work bellows and protection bellows; overvoltage protective device is to be located at the outer limited bolt that puts; crossing and drawing protective gear is to be located at the block of taking over outer surface and being positioned at protection bellows inner chamber, when expansion joint generation overcompression and overstretching, plays barrier effect.
Because adopt technique scheme, the utility model corrosion resisting property is good, and is also unaffected under the high temperature condition, reaches working life more than 20 years, and column unstability and overvoltage can not take place, cross the phenomenon that drawing plays damage.The fully buried pipeline that is particularly useful for the underground conveying high temperature media in high salt-soda soil of chloride ion content and coastal area.
Further specify embodiment of the present utility model below in conjunction with accompanying drawing.
Accompanying drawing is a structural representation of the present utility model.
As figure, an end of overcoat 3 is by the end seal welding of end plate 2 with adapter 1 and work bellows 4, and the other end of overcoat is by the end seal welding of end plate 8 with protection bellows 7, and gapped with the outer surface of adapter 10, its gap location is provided with cleaning shoe 9.The internal surface of protection bellows scribbles SEBF, SLF macromolecule composite coating layer 12, is filling aluminosilicate fiber cotton thermal-protective coating 13 in the cavity between protection bellows and the adapter 10.Work bellows and the abutting end of protection bellows and an end seal welding of adapter 10, this adjoiner is provided with guide ring 6.Put the limited bolt 5 that is provided with 4 overvoltage protections outward, take over the position that is positioned at protection bellows inner chamber on 10 and be provided with the block 11 that draws protection.Take over inside and be provided with honeycomb duct 14.
Claims (6)
1, a kind of fully buried high corrosion-proof type bellows expansion joint; comprise overcoat, adapter, honeycomb duct, work bellows, protection bellows critical piece; it is characterized in that described protection bellows inside surface applies high corrosion-inhibiting coating, filling thermal-protective coating in the cavity between protection bellows and the adapter.
2, by the described bellows expansion joint of claim 1, it is characterized in that described high corrosion-inhibiting coating is SEBF, SLF macromolecule composite coating layer.
3, by the described bellows expansion joint of claim 1, it is characterized in that described thermal-protective coating is the aluminosilicate fiber cotton packing.
4,, it is characterized in that this expansion joint inside is provided with guide ring and overvoltage, crosses and draw protective gear by the described bellows expansion joint of claim 1.
5,, it is characterized in that overvoltage protective device is to be located at the outer limited bolt that puts by the described bellows expansion joint of claim 4.
6, by the described bellows expansion joint of claim 4, it is characterized in that drawing protective gear is to be located at the block of taking over outer surface and being positioned at protection bellows inner chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97247609 CN2314213Y (en) | 1997-10-27 | 1997-10-27 | Fully-buried high-corrosion-resistance corrugated pipe expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97247609 CN2314213Y (en) | 1997-10-27 | 1997-10-27 | Fully-buried high-corrosion-resistance corrugated pipe expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2314213Y true CN2314213Y (en) | 1999-04-14 |
Family
ID=33955037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97247609 Expired - Fee Related CN2314213Y (en) | 1997-10-27 | 1997-10-27 | Fully-buried high-corrosion-resistance corrugated pipe expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2314213Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832443A (en) * | 2010-06-01 | 2010-09-15 | 陈墅庚 | Compound compensator for high pressure pipeline |
| CN103174903A (en) * | 2013-03-27 | 2013-06-26 | 江苏星光波纹管有限公司 | Compound axial-type expansion joint |
| CN103822040A (en) * | 2014-03-11 | 2014-05-28 | 江苏星光波纹管有限公司 | Double-corrugated pipe fully-buried type expansion joint |
| CN103851298A (en) * | 2014-03-19 | 2014-06-11 | 江苏亚星波纹管有限公司 | Heat-preserving waterproof fully-buried expansion joint |
| CN107345611A (en) * | 2016-05-08 | 2017-11-14 | 江苏贝特管件有限公司 | Guide and limit direct-burried outer pressure axial type expansion joint |
-
1997
- 1997-10-27 CN CN 97247609 patent/CN2314213Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832443A (en) * | 2010-06-01 | 2010-09-15 | 陈墅庚 | Compound compensator for high pressure pipeline |
| CN101832443B (en) * | 2010-06-01 | 2012-11-28 | 陈墅庚 | Compound compensator for high pressure pipeline |
| CN103174903A (en) * | 2013-03-27 | 2013-06-26 | 江苏星光波纹管有限公司 | Compound axial-type expansion joint |
| CN103822040A (en) * | 2014-03-11 | 2014-05-28 | 江苏星光波纹管有限公司 | Double-corrugated pipe fully-buried type expansion joint |
| CN103851298A (en) * | 2014-03-19 | 2014-06-11 | 江苏亚星波纹管有限公司 | Heat-preserving waterproof fully-buried expansion joint |
| CN107345611A (en) * | 2016-05-08 | 2017-11-14 | 江苏贝特管件有限公司 | Guide and limit direct-burried outer pressure axial type expansion joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |