CN2272095Y - Guiding external pressure multilayer expansion joint - Google Patents
Guiding external pressure multilayer expansion joint Download PDFInfo
- Publication number
- CN2272095Y CN2272095Y CN 96231141 CN96231141U CN2272095Y CN 2272095 Y CN2272095 Y CN 2272095Y CN 96231141 CN96231141 CN 96231141 CN 96231141 U CN96231141 U CN 96231141U CN 2272095 Y CN2272095 Y CN 2272095Y
- Authority
- CN
- China
- Prior art keywords
- shell
- expansion joint
- bellows
- external pressure
- guide ring
- 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
- 210000003746 feather Anatomy 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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- Joints Allowing Movement (AREA)
- Diaphragms And Bellows (AREA)
Abstract
The utility model relates to a direction formula external pressure multilayer expansion joint comprises both ends takeover, double-deck stainless steel bellows and shell etc.. The shell is provided with a guide key, the connecting pipe connected with the corrugated pipe is provided with a guide ring, and the guide ring is provided with a guide groove. The shell is also provided with a limit pin. The utility model discloses comprehensive properties is good, and the pressure-bearing improves with the compensation ability to can prevent to exceed the compensation limit, the life extension does not produce simultaneously and twists reverse, extensively is used for the conveying line of gas, liquid medium among systems such as petrochemical industry, metallurgy, heat supply network, with absorption mechanical displacement and heat displacement. The device is particularly suitable for occasions with high bearing pressure, large compensation amount and strict limitation on pipeline torsion.
Description
The utility model relates to a kind of guiding type external pressure multilayer expansion joint, belongs to the line device technical field.
Expansion joint is widely used in the delivery line of gas, liquid medium in the systems such as oil, chemical industry, metallurgy, heat supply network, when bearing system pressure, absorbs the mechanical displacement and the thermal walking that cause expection appearance in use because of the temperature difference.The general at present singel-ply bellows expansion joint that adopts mainly is made of adapter, bellows and shell etc., and is simple in structure, can play certain compensating action.But the singel-ply bellows bearing capacity is lower, by pressure cause along garden Zhou Fangxiang and bigger along the membrane stress of meridian direction, the flexural stress along meridian direction that is caused by pressure is also bigger, combination property is relatively poor, working life is shorter.Simultaneously, existing expansion joint does not have guide mechanism, can not be used for pipeline is reversed the occasion of strict restriction.
The purpose of this utility model is to overcome deficiency of the prior art, provides a kind of compensation performance good, and long service life is to the guiding type external pressure multilayer expansion joint of the strict restriction of pipeline distortional energy.
The technical solution of the utility model is: guiding type external pressure multilayer expansion joint mainly is made of adapter, bellows, shell, and outer casing inner wall constitutes the sealed type inner chamber jointly by ring flat-plate and the bellows outside and nozzle inner wall.Shell is provided with feather key, and the adapter that links to each other with bellows is provided with guide ring, guide ring is provided with guiding groove.Bellows is a double layer construction.During work, feather key endwisely slips in guiding groove, prevents from that expansion joint from producing to reverse.Double-deck bellows, wave height is higher, and sufficient intensity is arranged, and line pressure is born in every layer of bellows equilibrium, good combination property, bearing capacity and compensation ability improve, and the life-span prolongs.
In the said structure, feather key is welded on outer casing inner wall, and guide ring makes the expansion joint compact structure also in the enclosure, and performance may.Shell is provided with position limit pin, in case surpass limit of compensation.For preventing that expansion joint from predeformation taking place in transit, can on the ring flat-plate with adapter that bellows links to each other on the fixed plate that is welded, remove after the installation.
The utility model good combination property, pressure-bearing and compensation ability improve, and prolong working life, do not produce and reverse, and is particularly useful for pipeline is reversed the occasion of strict restriction.
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, weld with 8 one-tenths sealed types of guide ring 5 and ring flat-plate respectively at double-layer stainless steel bellows 6 two ends, and the inwall of shell 3 is by ring flat- plate 2 and 8 and the outside of bellows 6 and take over 1 and 7 inwall and constitute the sealed type inner chamber jointly.The inwall of shell 3 is welded with feather key 4, is provided with and the corresponding guiding groove of feather key with adapter 7 guide rings that link to each other 5 with bellows 6.Shell 3 is provided with position limit pin 10.Fixed plate 9 is spot-welded together with ring flat-plate 8 and adapter 7, the back is installed removes.
Claims (3)
1, a kind of guiding type external pressure multilayer expansion joint, mainly constitute by adapter, bellows, shell, outer casing inner wall constitutes the sealed type inner chamber jointly by ring flat-plate and the bellows outside and nozzle inner wall, it is characterized in that, shell is provided with feather key, the adapter that links to each other with bellows is provided with guide ring, and guide ring is provided with guiding groove, and bellows is a double layer construction.
2, connect the described expansion joint of claim 1, it is characterized in that feather key is welded on outer casing inner wall.
3, by the described expansion joint of claim 1, it is characterized in that shell is provided with position limit pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96231141 CN2272095Y (en) | 1996-01-23 | 1996-01-23 | Guiding external pressure multilayer expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96231141 CN2272095Y (en) | 1996-01-23 | 1996-01-23 | Guiding external pressure multilayer expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2272095Y true CN2272095Y (en) | 1998-01-07 |
Family
ID=33908396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96231141 Expired - Fee Related CN2272095Y (en) | 1996-01-23 | 1996-01-23 | Guiding external pressure multilayer expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2272095Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939702A (en) * | 2014-03-19 | 2014-07-23 | 江苏曙光压力容器有限公司 | External pressure type axial expansion joint |
| CN103939703A (en) * | 2014-03-19 | 2014-07-23 | 江苏曙光压力容器有限公司 | Coaxial two-way external pressure type anti-twisting expansion joint |
-
1996
- 1996-01-23 CN CN 96231141 patent/CN2272095Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939702A (en) * | 2014-03-19 | 2014-07-23 | 江苏曙光压力容器有限公司 | External pressure type axial expansion joint |
| CN103939703A (en) * | 2014-03-19 | 2014-07-23 | 江苏曙光压力容器有限公司 | Coaxial two-way external pressure type anti-twisting 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 |