CN2323231Y - Expansion joint resisting corrosion in high chlorion concentration environment - Google Patents
Expansion joint resisting corrosion in high chlorion concentration environment Download PDFInfo
- Publication number
- CN2323231Y CN2323231Y CN 98225792 CN98225792U CN2323231Y CN 2323231 Y CN2323231 Y CN 2323231Y CN 98225792 CN98225792 CN 98225792 CN 98225792 U CN98225792 U CN 98225792U CN 2323231 Y CN2323231 Y CN 2323231Y
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- CN
- China
- Prior art keywords
- pipe
- bellows
- expansion joint
- connecting pipe
- right section
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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 - Fee Related
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Abstract
The utility model relates to an expansion joint used for absorbing heat displacement on an engineering pipeline, which comprises an external pressure type corrugated expanding joint composed of left and right two sections of connecting pipes, a circle plate, an outer pipe and a metal corrugated pipe, wherein, the left section connecting pipe is connected with one end of the external tube through the circle plate, the external wall of the right section connecting pipe is connected with one end of the metal corrugated pipe through a backing ring, the other end of the metal corrugated pipe is connected with the left end of the connecting pipe, and the connecting pipe and the other end of the external pipe through the circle plate are connected into a whole. The connecting pipe forms a sliding fit with the right section connecting pipe, the right end of the connecting pipe is fixedly connected with one end of the non-metal corrosion resistant corrugated pipe at the same time, and the other end of the non-metal corrugated pipe is fixedly connected with the corresponding external wall of the right section connecting pipe.
Description
The utility model relates to the corrugated expansion joint that is used to absorb thermal walking on a kind of engineering pipeline.
Along with the development of Heat Supply Engineering, full directly buried type pipe laying is used more and more, and especially in the heat supply network engineering pipeline of coastal area, because the environment chloride ion content is very high, it is more and more outstanding that the compensation problem of pipeline thermal displacement also becomes.Usually the expansion joint of settling on engineering pipeline that is used for the thermal walking compensation is the plain edition corrugated expansion joint.This expansion joint is connected to form by adapter and exposed bellows integral body, and it divides two kinds of internal pressure type expansion joint and external-compression type expansion joints again, the former is that the adapter by metal bellows and its two ends constitutes, because the outer wall of its metal bellows is direct and environmental communication, so easily by the chlorion of air middle and high concentration or the corrosion of high chloride ion concentration (up to 14000ppm) underground water.The latter is made up of left and right two sections adapters, ring flat-plate, outer tube and metal bellowss, its left side section is taken over and is linked to each other with outer tube one end by ring flat-plate, right section is taken over outer wall and is linked to each other with bellows one end by gasket ring, the bellows the other end links into an integrated entity by connecting tube and ring flat-plate and outer tube, and connecting tube and right section are taken over to being slidingly matched, form the external pressure chamber of bellows, then the internal surface of the metal bellows of this expansion joint directly contacts with environment, also easily by chloride ion corrosion.
The purpose of this utility model is exactly in order to address the above problem, and a kind of high chlorine resistant ion concentration environmental corrosion expansion joint that can use under the high-concentration chlorine ion environment is provided.
Technical solution of the present utility model:
A kind of high chlorine resistant ion concentration environmental corrosion expansion joint, it includes by a left side, right two sections adapters, ring flat-plate, the external-compression type corrugated expansion joint that outer tube and metal bellows are formed, wherein left side section is taken over and is linked to each other with outer tube one end by ring flat-plate, right section is taken over outer wall and is linked to each other with an end of metal bellows by gasket ring, the other end of metal bellows links to each other with the left end of connecting tube, connecting tube is connected in aggregates by ring flat-plate with the outer tube the other end, and connecting tube and right section are taken over to being slidingly matched, the right-hand member that it is characterized in that connecting tube is connected with an end of nonmetal corrosion-resistant bellows simultaneously, and the other end of this nonmetal bellows is affixed with the corresponding outer wall of right section adapter.
The utility model is connected in series a corrosion-resistant nonmetal bellows again as the protection bellows on metal bellows; it can absorb bigger thermal walking; the corrosion of ability high-concentration chlorine ion again; then Korrosionsmedium in the environment such as high-concentration chlorine ion are just isolated by nonmetal bellows; can't touch metal bellows, play corrosion-resisting function.The utility model compact structure, easy for installation, can safe operation under the ultrahigh concentration chloride environment, be convenient to direct-burried, and compensation ability is strong, long service life can be saved engineering cost.
Fig. 1 is a structural representation of the present utility model.
As Fig. 1, the utility model includes by a left side, take over 1 for right two sections, 2, ring flat-plate 3, the external-compression type corrugated expansion joint that outer tube 4 and metal bellows 5 are formed, wherein section adapter 1 in a left side links to each other with outer tube 4 one ends by ring flat-plate 3, right section is taken over 2 outer walls and is linked to each other with an end of metal bellows 5 by gasket ring 6, the other end of metal bellows 5 links to each other with the left end of connecting tube 7, connecting tube 7 is connected in aggregates by ring flat-plate 8 with outer tube 4 the other ends, and connecting tube 7 takes over 2 for being slidingly matched with right section, characteristics of the present utility model are that the right-hand member of connecting tube 7 is connected with an end of nonmetal corrosion-resistant bellows 9 (seal bellows of making as polytetrafluoroethylmaterial material) simultaneously, the other end of this nonmetal bellows 9 is affixed with right section adapter 2 corresponding outer walls, right section is taken over 2 outer end outer walls and is connected with oversheath pipe 11 by ring flat-plate 10, the left end inwall of this oversheath pipe 11 and the right-hand member outer wall of outer tube 4 are slidingly matched, in case stop ring border impurity enters corrosion-resistant bellows 9, in order to avoid damage.Because connecting tube 7 takes over 2 for movingly with right section, then the inner chamber of metal bellows 5 communicates with the inner chamber of nonmetal bellows 9, make and form the identical Seal cage of volume between corrosion-resistant nonmetal bellows 9 and the metal bellows 5, be that nonmetal bellows 9 is connected in series with metal bellows 5, then during compensation work, metal bellows 5 is done the action that stretches, and nonmetal bellows 9 is done compressed action, thereby realizes the bit shift compensation function.
The utility model is owing to adopted nonmetal corrosion-resistant bellows 9, and then the Korrosionsmedium in the environment is isolated by nonmetal bellows 9, can't touch metal bellows 5, plays corrosion-resisting function.Simultaneously, because nonmetal corrosion-resistant bellows 9 is arranged, then metal bellows 5 can adopt the making of 300 series stainless steels to get final product, and needn't adopt Langaloy to make in order to improve Corrosion Protection as traditional metal bellows, can reduce engineering cost greatly.
Claims (2)
1. high chlorine resistant ion concentration environmental corrosion expansion joint, it includes by a left side, right two sections adapters, ring flat-plate, the external-compression type corrugated expansion joint that outer tube and metal bellows are formed, wherein left side section is taken over and is linked to each other with outer tube one end by ring flat-plate, right section is taken over outer wall and is linked to each other with an end of metal bellows by gasket ring, the other end of metal bellows links to each other with the left end of connecting tube, connecting tube is connected in aggregates by ring flat-plate with the outer tube the other end, and connecting tube and right section are taken over to being slidingly matched, the right-hand member that it is characterized in that connecting tube is connected with an end of nonmetal corrosion-resistant bellows simultaneously, and the other end of this nonmetal bellows is affixed with the corresponding outer wall of right section adapter.
2. by the described high chlorine resistant ion concentration of claim 1 environmental corrosion expansion joint, it is characterized in that right section adapter outer end outer wall is connected with the oversheath pipe by ring flat-plate, the left end inwall of this oversheath pipe and the right-hand member outer wall of outer tube are slidingly matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98225792 CN2323231Y (en) | 1998-01-15 | 1998-01-15 | Expansion joint resisting corrosion in high chlorion concentration environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98225792 CN2323231Y (en) | 1998-01-15 | 1998-01-15 | Expansion joint resisting corrosion in high chlorion concentration environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2323231Y true CN2323231Y (en) | 1999-06-09 |
Family
ID=33976412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98225792 Expired - Fee Related CN2323231Y (en) | 1998-01-15 | 1998-01-15 | Expansion joint resisting corrosion in high chlorion concentration environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2323231Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278563A (en) * | 2011-05-29 | 2011-12-14 | 石家庄巨力科技有限公司 | pipeline expansion joint |
| CN102537594A (en) * | 2011-12-22 | 2012-07-04 | 大连益多管道有限公司 | Heat insulating structure of directly-buried middle-temperature and low-temperature hot water sleeve compensator |
| CN102537595A (en) * | 2011-12-22 | 2012-07-04 | 大连益多管道有限公司 | Heat insulation structure of hot water sleeve compensator |
| CN103527585A (en) * | 2013-09-26 | 2014-01-22 | 中国船舶重工集团公司第七一〇研究所 | Telescopic rod protection device |
| CN106996496A (en) * | 2017-04-06 | 2017-08-01 | 洛阳双瑞特种装备有限公司 | A kind of band monitoring and the pressure balancing type expansion joint of bypass straight tube of safeguard function |
-
1998
- 1998-01-15 CN CN 98225792 patent/CN2323231Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278563A (en) * | 2011-05-29 | 2011-12-14 | 石家庄巨力科技有限公司 | pipeline expansion joint |
| CN102537594A (en) * | 2011-12-22 | 2012-07-04 | 大连益多管道有限公司 | Heat insulating structure of directly-buried middle-temperature and low-temperature hot water sleeve compensator |
| CN102537595A (en) * | 2011-12-22 | 2012-07-04 | 大连益多管道有限公司 | Heat insulation structure of hot water sleeve compensator |
| CN103527585A (en) * | 2013-09-26 | 2014-01-22 | 中国船舶重工集团公司第七一〇研究所 | Telescopic rod protection device |
| CN103527585B (en) * | 2013-09-26 | 2015-07-15 | 中国船舶重工集团公司第七一〇研究所 | Telescopic rod protection device |
| CN106996496A (en) * | 2017-04-06 | 2017-08-01 | 洛阳双瑞特种装备有限公司 | A kind of band monitoring and the pressure balancing type expansion joint of bypass straight tube of safeguard function |
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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 |