CN103486096B - Avoid the piston-type deep sea pressure compensator of seawater pollution - Google Patents
Avoid the piston-type deep sea pressure compensator of seawater pollution Download PDFInfo
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- CN103486096B CN103486096B CN201310448574.0A CN201310448574A CN103486096B CN 103486096 B CN103486096 B CN 103486096B CN 201310448574 A CN201310448574 A CN 201310448574A CN 103486096 B CN103486096 B CN 103486096B
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- pressure compensator
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Abstract
The invention discloses a kind of piston-type deep sea pressure compensator avoiding seawater pollution.The present invention is made up of protecgulum, cylinder barrel, spring, secondary piston, front nut, piston rod, back piston, back nut, back-up ring, O type circle and bonnet.Cylinder barrel is divided into three cavity volumes sealed against one another by forward and backward piston, and the distance between forward and backward piston is greater than the work shift of piston, ensure inner wall of cylinder attachment hydraulic oil can not with extraneous contact with sea water.Bonnet through hole and back nut form damping structure, impact when pressure compensator can be avoided to work.This kind of deep sea pressure compensator is simple and compact for structure, is convenient to processing and installs, can avoid the seawater pollution that hydraulic fluid leak causes.
Description
Technical field
The present invention relates to a kind of pressure compensator, particularly deep sea pressure compensator.
Background technique
Engineering equipment for deep ocean exploitation generally has hydraulic system, in order to avoid deep sea water pressure is on the impact of hydraulic system working pressure, must adopt pressure compensator.Conventional pressure compensator responds to extraneous seawater pressure by elastic elements such as leather bag, metallic thin film or bellowss, and is delivered to hydraulic system inside, makes hydraulic system return pressure equal with extraneous seawater pressure.Meanwhile, in order to prevent seawater from leaking in hydraulic system, usually spring being set in pressure compensator, making the return pressure of hydraulic system a little more than extraneous seawater pressure.Because the strength and stiffness of above-mentioned elastic element are little, fatigue life is low, directly affect the reliability of hydraulic system.Piston-type pressure compensator then can overcome this shortcoming, and has larger pressure compensation ability.But, the back and forth movement of piston in pressure compensation process, section hydraulic fluid can be made to be attached in inner wall of cylinder and and contact with sea water, thus cause seawater pollution.
Summary of the invention
The object of the present invention is to provide a kind of piston-type deep sea pressure compensator avoiding seawater pollution.
The technological scheme that technical solution problem of the present invention adopts is: the present invention includes protecgulum, cylinder barrel, spring, secondary piston, front nut, piston rod, back piston, back nut, back-up ring, O type circle and bonnet.Protecgulum and bonnet are welded in the two ends of cylinder barrel respectively, and spring, secondary piston, front nut, piston rod, back piston, back nut, back-up ring and O type circle are installed in cylinder barrel; Have through hole in the middle of protecgulum, communicate with extraneous seawater, protecgulum external cylindrical surface has screw thread, is connected with filter; Forward and backward piston relies on forward and backward nut to install on the piston rod respectively, and each outside piston cylinder is provided with two groups of black boies be made up of back-up ring and O type circle, and these two groups of black boies are arranged symmetrically with; Distance between forward and backward piston is greater than the work shift of piston; Before be stamped spring guide structure, spring fitting is between protecgulum and secondary piston; Have through hole in the middle of bonnet, communicate with hydraulic system, bonnet external cylindrical surface has screw thread, is connected with the fuel tank of hydraulic system or return line; Bonnet through hole internal diameter is slightly larger than back nut external diameter, and both form damping structure.
The invention has the beneficial effects as follows:
(1) cylinder barrel is divided into three cavity volumes sealed against one another by secondary piston and back piston, and the distance between forward and backward piston is greater than the work shift of piston, ensure back piston motion accompanying to the hydraulic oil in inner wall of cylinder can not with extraneous contact with sea water, thus avoid polluted seawater in hydraulic fluid leak to seawater.
(2) bonnet through hole and back nut form damping structure, impact when pressure compensator can be avoided to work.
(3) protecgulum and bonnet have threaded coupling, simple installation.
(4) each component structural is simple, is convenient to processing and assembling.
Accompanying drawing explanation
Fig. 1 is main pseudosection of the present invention.
In figure: 1, protecgulum, 2, spring, 3, front nut, 4, secondary piston, 5, cylinder barrel, 6, piston rod, 7, back piston, 8, back-up ring, 9, O type circle, 10, back nut, 11, bonnet.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, the present invention is made up of protecgulum 1, spring 2, front nut 3, secondary piston 4, cylinder barrel 5, piston rod 6, back piston 7, back nut 10, bonnet 11 and four groups of black boies be made up of back-up ring 8 and O type circle 9.
Protecgulum 1 and bonnet 11 are welded in the two ends of cylinder barrel 5 respectively, and spring 2, secondary piston 4, front nut 3, piston rod 6, back piston 7, back nut 10, back-up ring 8 and O type circle 9 are installed in cylinder barrel 5; Have through hole a in the middle of protecgulum 1, communicate with extraneous seawater, protecgulum 1 external cylindrical surface has screw thread, is connected with filter; Secondary piston 4 and back piston 7 rely on front nut 3 respectively, back nut 10 is arranged on piston rod 6; The external cylindrical surface of secondary piston 4 and back piston 7 is separately installed with two groups of black boies be made up of back-up ring 8 and O type circle 9, and two groups of black boies on each piston are arranged symmetrically with; Distance between secondary piston 4 and back piston 7 is greater than the work shift of piston, ensure back piston 7 move accompanying to the hydraulic oil on cylinder barrel 5 inwall can not with extraneous contact with sea water; Protecgulum 1 has spring guide structure, and spring 2 is installed between protecgulum 1 and secondary piston 4; Have through hole b in the middle of bonnet 11, communicate with hydraulic system, bonnet 11 external cylindrical surface has screw thread, is connected with the fuel tank of hydraulic system or return line; The internal diameter of bonnet 11 through hole is 1.01 ~ 1.05 times of the external diameter of back nut 10, and both form damping structure, impact when pressure compensator can be avoided to work.
Claims (1)
1. avoid the piston-type deep sea pressure compensator of seawater pollution, it is characterized in that: comprise protecgulum (1), spring (2), front nut (3), secondary piston (4), cylinder barrel (5), piston rod (6), back piston (7), back nut (10), bonnet (11) and four groups of black boies be made up of back-up ring (8) and O type circle (9), protecgulum (1) and bonnet (11) are welded in the two ends of cylinder barrel (5) respectively, spring (2), front nut (3), secondary piston (4), piston rod (6), back piston (7), back nut (10), back-up ring (8) and O type circle (9) are installed in cylinder barrel (5),
Before described secondary piston (4) and back piston (7) rely on respectively, nut (3) and back nut (10) are arranged on piston rod (6), and the distance between secondary piston (4) and back piston (7) is greater than the displacement of secondary piston (4) or back piston (7);
Described secondary piston (4) and the external cylindrical surface of back piston (7) are all provided with two groups of black boies be made up of back-up ring (8) and O type circle (9), and two groups of black boies on each piston are arranged symmetrically with;
There is through hole in the middle of described protecgulum (1), can communicate with extraneous seawater; Protecgulum (1) external cylindrical surface there is screw thread, can be connected with filter; Protecgulum (1) has spring (2) guide cylinder structure, and spring (2) is arranged between protecgulum (1) and secondary piston (4);
There is through hole in the middle of described bonnet (11), can communicate with hydraulic system, and through-hole diameter is 1.01 ~ 1.05 times of back nut (10) diameter; Bonnet (11) external cylindrical surface there is screw thread, can be connected with the fuel tank of hydraulic system or return line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310448574.0A CN103486096B (en) | 2013-09-27 | 2013-09-27 | Avoid the piston-type deep sea pressure compensator of seawater pollution |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310448574.0A CN103486096B (en) | 2013-09-27 | 2013-09-27 | Avoid the piston-type deep sea pressure compensator of seawater pollution |
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| Publication Number | Publication Date |
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| CN103486096A CN103486096A (en) | 2014-01-01 |
| CN103486096B true CN103486096B (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310448574.0A Active CN103486096B (en) | 2013-09-27 | 2013-09-27 | Avoid the piston-type deep sea pressure compensator of seawater pollution |
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| CN105275767B (en) * | 2014-07-17 | 2018-02-09 | 中联重科股份有限公司 | The pressure compensator and the concrete pump set of concrete pumping |
| CN106043633B (en) * | 2016-05-27 | 2019-01-29 | 中国科学院力学研究所 | A kind of the pressure regulation filler and its filling device of benthoscope pneumatic shell |
| CN106186131A (en) * | 2016-08-31 | 2016-12-07 | 扬州市江都永坚有限公司 | A kind of desalinization atomising device |
| CN107063667B (en) * | 2017-05-16 | 2019-03-29 | 浙江大学 | The phase transformation buoyancy engine performance test apparatus of temperature active control |
| CN107270043B (en) * | 2017-06-28 | 2019-01-25 | 同济大学 | The clearance fit of small-sized deep-sea instrument pressure cylinder reinforces coil apparatus |
| CN107588057B (en) * | 2017-11-08 | 2019-11-08 | 北京航空航天大学 | A kind of deep-sea High-voltage-resistatransformer hydraulic cylinder sealing structure |
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| CN107883938A (en) * | 2017-12-28 | 2018-04-06 | 美钻能源科技(上海)有限公司 | A kind of underwater geodetic datum device |
| CN108443566A (en) * | 2018-04-28 | 2018-08-24 | 天津祥嘉流体控制***有限公司 | A kind of underwater valve actuator |
| CN109185749A (en) * | 2018-09-13 | 2019-01-11 | 中国科学院深海科学与工程研究所 | A kind of deep underwater lighting fixture in full sea |
| CN108895044A (en) * | 2018-09-25 | 2018-11-27 | 天津昊野科技有限公司 | A kind of pressure compensator of deepwater work device |
| CN109326925B (en) * | 2018-10-30 | 2020-06-23 | 中国船舶工业***工程研究院 | Pressure self-adaptation compensation underwater joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3429783A1 (en) * | 1984-08-13 | 1986-02-20 | Herion-Werke Kg, 7012 Fellbach | PISTONLESS CYLINDER |
| CN2047330U (en) * | 1989-03-14 | 1989-11-08 | 河北工学院 | Piston type compensator |
| DE4217121C2 (en) * | 1992-05-22 | 1996-02-01 | Langenstein & Schemann Gmbh | Free piston-cylinder device with two different hydraulic fluids |
| CN102862665A (en) * | 2011-07-05 | 2013-01-09 | 苏州桑泰海洋仪器研发有限责任公司 | Pressure balance retainer for underwater oil charge system |
| CN203500141U (en) * | 2013-09-27 | 2014-03-26 | 浙江大学舟山海洋研究中心 | Piston type deep sea pressure compensator capable of avoiding seawater pollution |
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