CN1239836C - Pressure resistance bellows - Google Patents
Pressure resistance bellows Download PDFInfo
- Publication number
- CN1239836C CN1239836C CN 200410008781 CN200410008781A CN1239836C CN 1239836 C CN1239836 C CN 1239836C CN 200410008781 CN200410008781 CN 200410008781 CN 200410008781 A CN200410008781 A CN 200410008781A CN 1239836 C CN1239836 C CN 1239836C
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- Prior art keywords
- bellows
- pipe
- pressure
- cavity
- layer
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Abstract
The present invention discloses a pressure resisting corrugated pipe which comprises a pipe body and union joints, wherein the union joints are arranged at both ends of the pipe body, the pipe wall of the pipe body is in a multilayer structure with at least three layers, and sealed cavities are formed among the adjacent layers of the pipe wall by the union joints at both ends of the pipe body; liquid media are fully filled in the cavities, pressure proportion valves are arranged among the adjacent cavities, and the same pressure proportion valve is arranged between the cavity at the innermost side and a pipe hole of the corrugated pipe. Fluid pressure conveyed in the corrugated pipe of the present invention can be distributed to each layer of the pipe wall in a certain proportion, so that under the condition of no increase of single-layer wall thickness, the pressure resisting strength of the corrugated pipe can be increased by times. The pressure resisting corrugated pipe has the advantages of simple structure, convenient manufacture, stable performance, fatigue resistance, etc.
Description
Technical field
The present invention relates to a kind of bellows, relate in particular to a kind of resistance to compression bellows.
Background technique
In the middle of the application of bellows, especially transport high temperature, the heavy caliber bellows of high-pressure liquid medium, people are provided with the equilibrium swelling joint usually on bellows and corrugated expansion joint improves its compressive strength, prevent to explode and eliminate stress, but this expansion joint, compensator is the processing technology complexity not only, the cost height, and pressure medium can make pipeline that fixed bearing is produced very big thrust, bring difficulty for the design of bearing, be difficult for popularizing, simultaneously because structural defective, the not enough balance of bellows pressurized, stress are eliminated not ideal enough, sometimes even can't satisfy usage requirement; If improve its compressive strength by the mode that increases the individual layer wall thickness, then cause bellows intensity very big and compensation rate is less, and compressive strength raising amount is limited, there are life-span weak point, poor stability, shortcoming such as uneconomical in addition.
Summary of the invention
At the deficiencies in the prior art, the object of the present invention is to provide a kind of compressive strength height, simple, the fatigue proof resistance to compression bellows of manufacturing process.
For achieving the above object, resistance to compression bellows of the present invention comprises the joint at body and body two ends, the tube wall of its middle tube body is two-layer above multi-layer structure, joint by the body two ends between the adjacent layer of tube wall constitutes an airtight cavity, full of liquid medium in the cavity, be provided with the pressure Proportional valve between the adjacent cavity, be provided with same pressure Proportional valve between the most inboard cavity and the bellows pore.
Further, described pressure Proportional valve is arranged on the wall layers between adjacent two cavitys of described tube wall.
Further, described pressure Proportional valve is a piston cylinder operator, the work area difference at piston two ends, and the working surface at piston two ends is communicated with a cavity in adjacent two cavitys separately.
Further, described tube wall is two-layer.
Further, described tube wall is three layers.
The tube wall of bellows is arranged to multilayer, constitute airtight one by one cavity between layer and the layer, full of liquid medium in the while cavity, and after between the adjacent cavity pressure Proportional valve being set, the pressure of the fluid that makes in the bellows to be carried is distributed on each layer of tube wall by a certain percentage, therefore can significantly improve the compressive strength of bellows under the situation that does not increase the individual layer wall thickness, and the present invention has simple in structure, easily manufactured, advantages such as stable performance, endurance.
Description of drawings
Fig. 1 is the structural representation of first embodiment of the invention;
Fig. 2 is the structural representation of second embodiment of the invention.
Embodiment
In first embodiment, as shown in Figure 1, bellows is double-deck, is made of internal layer bellows 2 and outer bellows 3, and its two ends are connected with flange 1, and seal by Sealing, filled with fluid medium in the cavity 5 between bellows 2 and bellows 3, the tube wall of the port of bellows 2 is provided with pressure Proportional valve 6, and its scaling factor is 1: 2, the last working surface of Proportional valve 6 is arranged in cavity 5, and following working surface is arranged in the inner chamber 4 of bellows 2; During work,, the fed sheet of a media in the inner chamber 4 is P if pressing
1, promptly the pressure that is subjected to of bellows 2 inboards is P
1, then under the effect of Proportional valve, the medium in the cavity 5 is pressed and is P
1/ 2, promptly the pressure that is subjected to of bellows 2 outsides is P
1/ 2, so the actual pressure that bellows 2 is subjected to is P
1/ 2, and the pressure that outer bellows 3 inboards are subjected to is P
1/ 2, the barometric pressure that the outside is subjected to is P
0, so the actual pressure that bellows 3 is subjected to is (P
1/ 2-P
0), if want bellows 2 and 3 to be subjected to identical pressure, to improve the anti-pressure ability of bellows to greatest extent, the scaling factor that can obtain the pressure Proportional valve through simple computation should be (P+P0)/2P.
Still can not satisfy the application places of usage requirement at bigger, the double-deck resistance to compression bellows of some pressure, can reduce the pressure that every layer of bellows is subjected to by the number of plies that increases bellows, improve its entire compression ability with this, as shown in Figure 2, in a second embodiment, bellows is three layers, on original two-layer basis, increased outer bellows 7, between bellows 7 and bellows 3, pressure Proportional valve 8 is installed, if want every layer of pressure that is subjected to equate, the scaling factor that then can get the pressure Proportional valve after as calculated should be (2P
0+ P)/(2P+P
0).
Claims (5)
1, a kind of resistance to compression bellows, the joint that comprises body and body two ends, it is characterized in that, the tube wall of body is two-layer above multi-layer structure, joint by the body two ends between the adjacent layer of tube wall constitutes an airtight cavity, full of liquid medium in the cavity is provided with the pressure Proportional valve between the adjacent cavity, be provided with same pressure Proportional valve between the most inboard cavity and the bellows pore.
2, resistance to compression bellows as claimed in claim 1 is characterized in that, described pressure Proportional valve is arranged on the wall layers between adjacent two cavitys of described tube wall.
3, resistance to compression bellows as claimed in claim 1 is characterized in that, described pressure Proportional valve is a piston cylinder operator, the work area difference at piston two ends, and the working surface at piston two ends is communicated with a cavity in adjacent two cavitys separately.
4, resistance to compression bellows as claimed in claim 1 is characterized in that, described tube wall is two-layer.
5, resistance to compression bellows as claimed in claim 1 is characterized in that, described tube wall is three layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410008781 CN1239836C (en) | 2004-03-19 | 2004-03-19 | Pressure resistance bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410008781 CN1239836C (en) | 2004-03-19 | 2004-03-19 | Pressure resistance bellows |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1563776A CN1563776A (en) | 2005-01-12 |
| CN1239836C true CN1239836C (en) | 2006-02-01 |
Family
ID=34477721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410008781 Expired - Fee Related CN1239836C (en) | 2004-03-19 | 2004-03-19 | Pressure resistance bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1239836C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588705B (en) * | 2011-01-07 | 2013-09-18 | 李春光 | Pipeline compensator |
| CN104100778A (en) * | 2014-07-10 | 2014-10-15 | 镇江春环密封件集团有限公司 | Steel lining polytef composite pipe |
| CN105042259B (en) * | 2015-07-28 | 2017-03-08 | 中船动力有限公司 | Double-wall expansion joint and installation method |
| 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 |
| EP3555516B1 (en) * | 2016-12-13 | 2022-08-03 | Monsanto Technology LLC | Expansion joint fitting for flammable liquid |
-
2004
- 2004-03-19 CN CN 200410008781 patent/CN1239836C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1563776A (en) | 2005-01-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG LEDING SYLPHON BELLOWS CO., LTD. Free format text: FORMER OWNER: INST. OF MECHANICS, CAS Effective date: 20091023 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091023 Address after: Yueqing City, Zhejiang Province, South Town hang dry mouth Industrial Zone Patentee after: Zhejiang Yueding Corrugated Tube Co., Ltd. Address before: No. 15 West Fourth Ring Road, Beijing, Haidian District Patentee before: Institute of Mechanics of Chinese Academy of Sciences |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060201 Termination date: 20170319 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |