CN2462208Y - Pressure self-balancing expansion joint - Google Patents
Pressure self-balancing expansion joint Download PDFInfo
- Publication number
- CN2462208Y CN2462208Y CN 00221698 CN00221698U CN2462208Y CN 2462208 Y CN2462208 Y CN 2462208Y CN 00221698 CN00221698 CN 00221698 CN 00221698 U CN00221698 U CN 00221698U CN 2462208 Y CN2462208 Y CN 2462208Y
- Authority
- CN
- China
- Prior art keywords
- expansion joint
- bellows
- adapter
- pressure
- bearing shell
- 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
The utility model discloses a pressure self-balancing expansion joint, which is provided with a front connecting pipe, a back connecting pipe and a bellows. The outer part of the bellows is provided with a pressure casing, and the connecting pipes are connected with elastic rubber bags which are positioned in a cavity between the bellows and the pressure casing which is provided with a liquid charging hole. A sealing packing ring and pressing cover sealing are arranged between the pressure casing and the connecting pipes. The utility model can be used for high-pressure vessels or pipelines with large diameter.
Description
The utility model relates to pressurized container and pipeline.
The function of expansion joint is that to absorb the thermal walking of rigid connection system relevant portion poor, and in order to reducing the temperature difference stress of this system, so expansion joint is the axially weak rigid device of easy displacement, and its rigidity is low more, and it is strong more to absorb temperature difference displacement function, as the thin-walled expansion joint.
The wall thickness of expansion joint is thin more, and its rigidity is low more, and its intensity also reduces thereupon.Therefore the rigidity requirement and the requirement of strength of expansion joint are contradiction, and requirement of strength is primary.Under the pressure condition with higher, expansion joint will have been sacrificed the bit shift compensation function with heavy wall or pincers dress stiffening ring like this, even at higher pressure and bigger diameter, installing expansion joint additional has not had possibility, because the expansion joint of very big wall thickness, in non-displacement compensation ability in fact.
The bit shift compensation function of expansion of structure joint is the paradox that conflicts mutually with the pressure bearing function now.
The purpose of this utility model provides the pressure self balancing expansion joint that a kind of existing low rigidity again can high pressure-bearing.So, pressure self balancing expansion joint not only can be used in the temperature difference bit shift compensation of low pressure, small diameter system, also can be used on the temperature difference bit shift compensation of high pressure, major diameter system.This provides a kind of novel bit shift compensation device for pressurized container and pipeline industry.
The purpose of this utility model is achieved through the following technical solutions.
A kind of pressure self balancing expansion joint, forward and backward adapter is arranged, bellows is arranged between the adapter, it is characterized in that bellows is equipped with bearing shell outward, be connected with elastic capsule in the adapter, in the topping up cavity of elastic capsule between bellows and bearing shell, spout and spout plug are arranged on the bearing shell.
Between bearing shell and the adapter stuffing box packing ring is arranged, gland compresses the stuffing box packing ring, and gland is installed on the bearing shell by bolt.
Elastic capsule has 1～3.
Elastic capsule can be also metallic material such as stainless steel, titanium of nonmetallic material such as rubber.
Transmission medium 9 should be the liquid condition that does not gasify and also do not solidify at work, can be water, oil or other suitable liquid.
Compare with prior art, the utlity model has outstanding advantage:
The utility model is coexisted the reduction of expansion joint rigidity and the raising of intensity, can be used on large diameter pressurized container of high pressure or the pipeline, has reduced the device fabrication cost, has improved safety coefficient, is suitable for any working medium, no spillage risk.
Fig. 1 is the utility model structural representation.
Fig. 2 is the another kind of structural representation of the utility model.
Below in conjunction with accompanying drawing,, the utility model is further described by embodiment.
Embodiment 1:
Referring to Fig. 1, adapter 1, rear tube 8 before the utility model has, bellows 2 is arranged between the adapter, the bellows 2 outer bearing shells 4 that are equipped with have working medium 10 between adapter and the bellows 2, between bellows 2 and the bearing shell 4 transmission medium 9 are arranged, be connected with elastic capsule 3,11 in adapter 1, the adapter 8, elastic capsule 3 and adapter 1 communicate, and elastic capsule 11 and adapter 8 communicate, in elastic capsule 3, the topping up chamber of elastic capsule 11 between bearing shell 4 and bellows 2.On the bearing shell 4 spout is arranged, spout plug 7 is installed on the spout.Bearing shell 4 and take over 8 between stuffing box packing ring 5 is arranged, gland 6 is enclosed within to be taken on 8, compresses stuffing box packing ring 5, gland 6 is installed on the bearing shell 4 by bolt.The utility model product working pressure can be brought up to 10MPa, and is suitable for any heat transfer medium, no dielectric leakage danger.Flow through band in adapter and the bellows and press working medium 10, this medium 10 flows into the elastic capsule 3 and 11 that communicates with forward and backward adapter.Elastic capsule acts on the pressure of medium 10 on the shell 4 by transmission medium 9, and can increase and decrease the variation of medium 9 volumes equally, and medium 9 is full of in the shell 4 always.Transmission medium 9 is filled with in the topping up chamber before work, and screwing hermetic spout plug 7.Stuffing box packing ring 5 is glanded 6 and compresses, and leaks to prevent transmission medium 9.Front and back among Fig. 1 are taken over and can directly be welded between the pipeline.
Referring to Fig. 2, structure is with embodiment 1.
Fig. 2 is the transformation of the utility model expansion joint to standard GB 151-89 China and foreign countries stuffing box formula floating head heat exchanger.Present stuffing box formula floating head heat exchanger is unsuitable for volatilization, the occasion of inflammable, explosive, poisonous and valuable medium, and working pressure is below 2.5MPa, because packing box seal may leak.Use improved, the pressure self balancing expansion joint floating head heat exchanger of the utility model, (as Fig. 2) do not have the worry of leakage, can be applicable to above medium, and working pressure is also unrestricted.This is with the insecurity of radical change stuffing box formula floating head heat exchanger and its using scope is expanded greatly.
Claims (2)
1, a kind of pressure self balancing expansion joint, forward and backward adapter is arranged, bellows is arranged between the adapter, it is characterized in that bellows is equipped with bearing shell outward, be connected with elastic capsule in the adapter, in the topping up cavity of elastic capsule between bellows and bearing shell, spout and spout plug are arranged on the bearing shell.
2, pressure self balancing expansion joint according to claim 1 is characterized in that between bearing shell and the adapter stuffing box packing ring being arranged, and gland compresses the stuffing box packing ring, and gland is installed on the bearing shell by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00221698 CN2462208Y (en) | 2000-09-07 | 2000-09-07 | Pressure self-balancing expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00221698 CN2462208Y (en) | 2000-09-07 | 2000-09-07 | Pressure self-balancing expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2462208Y true CN2462208Y (en) | 2001-11-28 |
Family
ID=33586557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00221698 Expired - Fee Related CN2462208Y (en) | 2000-09-07 | 2000-09-07 | Pressure self-balancing expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2462208Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051368A (en) * | 2016-06-01 | 2016-10-26 | 中国航空工业集团公司西安飞机设计研究所 | Vibration reduction muffler with axial and radial compensation functions |
| CN110410607A (en) * | 2019-08-07 | 2019-11-05 | 陈浩然 | A kind of environmental protection expansion bellow |
-
2000
- 2000-09-07 CN CN 00221698 patent/CN2462208Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051368A (en) * | 2016-06-01 | 2016-10-26 | 中国航空工业集团公司西安飞机设计研究所 | Vibration reduction muffler with axial and radial compensation functions |
| CN106051368B (en) * | 2016-06-01 | 2019-08-23 | 中国航空工业集团公司西安飞机设计研究所 | A kind of damping muffler with radial-axial compensation function |
| CN110410607A (en) * | 2019-08-07 | 2019-11-05 | 陈浩然 | A kind of environmental protection expansion bellow |
| CN110410607B (en) * | 2019-08-07 | 2023-01-17 | 江苏晨鑫波纹管有限公司 | Environment-friendly corrugated 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 |