CN103486096A - Piston-type deep sea pressure compensator capable of avoiding sea water pollution - Google Patents

Piston-type deep sea pressure compensator capable of avoiding sea water pollution Download PDF

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Publication number
CN103486096A
CN103486096A CN201310448574.0A CN201310448574A CN103486096A CN 103486096 A CN103486096 A CN 103486096A CN 201310448574 A CN201310448574 A CN 201310448574A CN 103486096 A CN103486096 A CN 103486096A
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CN
China
Prior art keywords
piston
nut
pressure compensator
protecgulum
cylinder barrel
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Application number
CN201310448574.0A
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Chinese (zh)
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CN103486096B (en
Inventor
宋伟
金涛
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浙江大学舟山海洋研究中心
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Priority to CN201310448574.0A priority Critical patent/CN103486096B/en
Publication of CN103486096A publication Critical patent/CN103486096A/en
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Publication of CN103486096B publication Critical patent/CN103486096B/en

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Abstract

The invention discloses a piston-type deep sea pressure compensator capable of avoiding sea water pollution. The piston-type deep sea pressure compensator is composed of a front cover, a cylinder barrel, a spring, a front piston, a front nut, a piston rod, a rear piston, a rear nut, retaining rings, O-shaped rings and a rear cover. The front piston and the rear piston divide the cylinder barrel into three mutually-sealed containing cavities, and the distance between the front piston and the rear piston is larger than working displacement of the pistons, so that hydraulic oil attached on the inner wall of the cylinder barrel is ensured not to contact with outside sea water; a rear cover through hole and the rear nut form a damping structure, so that impact when the pressure compensator works can be avoided. The piston-type deep sea pressure compensator is simple and compact in structure, convenient to process and mount and capable of avoiding sea water pollution caused by leaking of the hydraulic oil.

Description

Avoid the piston-type deep sea pressure compensator of seawater pollution
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, and the impact for fear of deep sea water pressure on hydraulic system working pressure must adopt pressure compensator.The tradition pressure compensator is responded to extraneous seawater pressure by elastic elements such as leather bag, metallic thin film or bellowss, and it is delivered to hydraulic system inside, and the hydraulic system return pressure is equated with extraneous seawater pressure., in order to prevent seawater, leak in hydraulic system simultaneously, spring is set usually in pressure compensator, make 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 affects the reliability of hydraulic system.The piston-type pressure compensator can overcome this shortcoming, and has larger pressure compensation ability.Yet, the back and forth movement of piston in the pressure compensation process, can make the part hydraulic oil liquid be attached on inner wall of cylinder and and contact with sea water, thereby 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 of 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 respectively the two ends of cylinder barrel, and spring, secondary piston, front nut, piston rod, back piston, back nut, back-up ring and O type circle are installed in cylinder barrel; In the middle of protecgulum, through hole is arranged, communicate with extraneous seawater, the protecgulum external cylindrical surface has screw thread, with filter, is connected; Forward and backward piston relies on respectively forward and backward nut to be arranged on piston rod, and each outside piston cylinder is equipped with two groups of black boies that are comprised 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 the spring guide structure, spring fitting is between protecgulum and secondary piston; In the middle of bonnet, through hole is arranged, communicate with hydraulic system, the bonnet external cylindrical surface has screw thread, with fuel tank or the return line of hydraulic system, is connected; Bonnet through hole internal diameter is slightly larger than the back nut external diameter, and both form damping structure.
The invention has the beneficial effects as follows:
(1) secondary piston and back piston are divided into three cavity volumes of sealing each other by cylinder barrel, and the distance between forward and backward piston is greater than the work shift of piston, guarantee the accompanying hydraulic oil on inner wall of cylinder of back piston motion not can with extraneous contact with sea water, thereby avoided hydraulic fluid leak in seawater and polluted seawater.
(2) bonnet through hole and back nut form damping structure, the impact in the time of can avoiding pressure compensator work.
(3) protecgulum and bonnet have threaded coupling, simple installation.
(4) each component structural is simple, is convenient to processing and assembling.
The 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 consists 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 that are comprised of back-up ring 8 and O type circle 9.
Protecgulum 1 and bonnet 11 are welded in respectively the two ends of cylinder barrel 5, 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; In the middle of protecgulum 4, through hole a is arranged, communicate with extraneous seawater, protecgulum 4 external cylindrical surfaces have screw thread, with filter, are connected; Secondary piston 4 and back piston 7 rely on respectively front nut 3, back nut 10 to be 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 that are comprised 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, guarantee the accompanying hydraulic oil to cylinder barrel 5 inwalls of back piston 7 motion not can with extraneous contact with sea water; Protecgulum 1 has the spring guide structure, and spring 2 is installed between protecgulum 1 and secondary piston 4; In the middle of bonnet 11, through hole b is arranged, communicate with hydraulic system, bonnet 11 external cylindrical surfaces have screw thread, with fuel tank or the return line of hydraulic system, are connected; The internal diameter of bonnet 11 through holes is 1.01~1.05 times of external diameter of back nut 10, and both form damping structure, the impact in the time of can avoiding pressure compensator 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 that formed by back-up ring (8) and O type circle (9), protecgulum (1) and bonnet (11) are welded in respectively the two ends of cylinder barrel (5), 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) above, and the distance between secondary piston (4) and back piston (7) is greater than the displacement of secondary piston (4) or back piston (7);
Two groups of black boies that are comprised of back-up ring (8) and O type circle (9) all are installed on the external cylindrical surface of described secondary piston (4) and back piston (7), and two groups of black boies on each piston are arranged symmetrically with;
In the middle of described protecgulum (1), through hole is arranged, can communicate with extraneous seawater; On protecgulum (1) external cylindrical surface, screw thread is arranged, 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);
In the middle of described bonnet (11), through hole is arranged, can communicate with hydraulic system, and through-hole diameter is 1.01 ~ 1.05 times of back nut (10) diameter; On bonnet (11) external cylindrical surface, screw thread is arranged, can be connected with fuel tank or the return line of hydraulic system.
CN201310448574.0A 2013-09-27 2013-09-27 Avoid the piston-type deep sea pressure compensator of seawater pollution CN103486096B (en)

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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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CN103486096B CN103486096B (en) 2015-07-29

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105275767A (en) * 2014-07-17 2016-01-27 中联重科股份有限公司 Pressure compensation device for concrete pumping and concrete pumping device
CN106043633A (en) * 2016-05-27 2016-10-26 中国科学院力学研究所 Pressure regulating filler for bathyscaphe pressure resistant shell and filling device of pressure regulating filler
CN107063667A (en) * 2017-05-16 2017-08-18 浙江大学 The phase transformation buoyancy engine performance test apparatus of temperature active control
CN107270043A (en) * 2017-06-28 2017-10-20 同济大学 The gap of small-sized deep-sea instrument pressure cylinder, which coordinates, strengthens coil apparatus
CN107588057A (en) * 2017-11-08 2018-01-16 北京航空航天大学 A kind of deep-sea High-voltage-resistatransformer hydraulic cylinder sealing structure
CN109326925A (en) * 2018-10-30 2019-02-12 中国船舶工业系统工程研究院 A kind of pressure adaptive compensation water lower contact

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3435027A1 (en) * 1984-08-13 1986-04-03 Herion Werke Kg Rodless cylinder
CN2047330U (en) * 1989-03-14 1989-11-08 河北工学院 Piston type compensator
DE4217121A1 (en) * 1992-05-22 1993-11-25 Langenstein & Schemann Gmbh Free piston-cylinder unit using oil and water - has connecting rod with recessed section for control of flow through cylinder wall outlet
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3435027A1 (en) * 1984-08-13 1986-04-03 Herion Werke Kg Rodless cylinder
CN2047330U (en) * 1989-03-14 1989-11-08 河北工学院 Piston type compensator
DE4217121A1 (en) * 1992-05-22 1993-11-25 Langenstein & Schemann Gmbh Free piston-cylinder unit using oil and water - has connecting rod with recessed section for control of flow through cylinder wall outlet
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

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105275767A (en) * 2014-07-17 2016-01-27 中联重科股份有限公司 Pressure compensation device for concrete pumping and concrete pumping device
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
CN106043633A (en) * 2016-05-27 2016-10-26 中国科学院力学研究所 Pressure regulating filler for bathyscaphe pressure resistant shell and filling device of pressure regulating filler
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
CN107063667A (en) * 2017-05-16 2017-08-18 浙江大学 The phase transformation buoyancy engine performance test apparatus of temperature active control
CN107063667B (en) * 2017-05-16 2019-03-29 浙江大学 The phase transformation buoyancy engine performance test apparatus of temperature active control
CN107270043A (en) * 2017-06-28 2017-10-20 同济大学 The gap of small-sized deep-sea instrument pressure cylinder, which coordinates, strengthens coil apparatus
CN107588057A (en) * 2017-11-08 2018-01-16 北京航空航天大学 A kind of deep-sea High-voltage-resistatransformer hydraulic cylinder sealing structure
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
CN109326925A (en) * 2018-10-30 2019-02-12 中国船舶工业系统工程研究院 A kind of pressure adaptive compensation water lower contact
CN109326925B (en) * 2018-10-30 2020-06-23 中国船舶工业系统工程研究院 Pressure self-adaptation compensation underwater joint

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