Seawater environment pressure compensation in hydraulic system of underwater installations
A technology of environmental pressure and hydraulic system, which is applied in the direction of fluid pressure actuation device, fluid pressure actuation system components, mechanical equipment, etc. It can solve the problems of inability to replenish oil, manual inspection and exhaust, and failure to meet the requirements of automatic oil replenishment, etc. , to achieve the effect of high pressure compensation accuracy
Inactive Publication Date: 2006-09-06
ZHEJIANG UNIV
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Problems solved by technology
For underwater equipment that needs to dive underwater for several months, it is impossible to replenish oil during work.
Therefore, this compensator cannot meet the requirements of automatic oil replenishment;
[0008] (3) The existing pressure compensator does not have an automatic exhaust device, and it must be pre-filled with oil manually before working, and the air in it must be emptied
In this way, the equipment must be manually inspected and exhausted before entering the water every time, causing unnecessary trouble;
[0009] (4) Considering the reliability of the product, since the aging phenomenon of rubber products is inevitable, once a leak occurs, seawater will invade the hydraulic system, making the system unable to work normally
Its reliability needs to be improved
Method used
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[0025] Such as figure 1 , figure 2 , image 3 , figure 2 As shown, the present invention includes: a mechanical seawater environment pressure sensitive unit, an automatic exhaust unit and an automatic oil replenishment unit, wherein:
[0026] 1) Mechanical seawater environment pressure sensitive unit: including lower shell 1, rolling diaphragm 2, fixed plate 3, traction frame 4, nut 5, spring washer 6, screw 7, flat washer 8, pressure plate 9, constant force spring 10 , roller 11, nut 12, spring washer 13, flat washer 14, piston 15, sealing ring 16, pressure plate 17, flat washer 18, nut 19, control rod 20, orifice 26, bolt 32, nut 33, spring washer 34. Flat pad 35, middle casing 36, spring frame 37, shaft sleeve 38, circlip 39, lower casing 40, screw 41, nut 42, spring pad 43, flat pad 44, bolt 45, sealing ring 46, Circlip 47, guide sleeve 48, nut 49, sealing ring 50, connector 51, nut 52, lock nut 53; in the small end of the lower casing 1, the outer ring of the rollin...
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The invention discloses a sea water pressure compensating device in underwater hydraulic system, able to sense sea water pressure and transfer it to the hydraulic system for compensating pressure of the hydraulic system, so as to eliminate or reduce the influence of sea water on the hydraulic system. It senses the sea water pressure by rolling film, and by the prepressurization of the constant force spring, makes the compensating pressure slightly higher than the sea water pressure, preventing the sea water from entering the hydraulic system, and its special triple seal design ensures long-term reliable working. Because the air in the device is automatically exhausted by the automatic exhausting unit, it can complete the oil supplement to the pressure sensitive unit by the automatic oil supplementing unit. It is mainly used in hydraulic systems of underwater devices at arbitrary depths under the sea water to compensate the influence of sea water on the hydraulic system.
Description
technical field [0001] The invention relates to a fluid pressure actuator, in particular to a seawater environment pressure compensation device in a hydraulic system of underwater equipment. Background technique [0002] Marine underwater equipment includes three categories: underwater robots, underwater construction equipment and military submarines. For the hydraulic control system of these underwater equipment, it is necessary to solve some related key problems to ensure the control performance of the hydraulic system when working in the environment of seawater with large pressure changes, strong corrosion, and large temperature changes. How to solve the problem of pressure compensation or pressure balance of the hydraulic system with the change of seawater pressure naturally becomes one of the key problems to be solved by the hydraulic system of underwater equipment. [0003] The pressure of the hydraulic system of underwater equipment did not take pressure compensation...
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IPC IPC(8): F15B21/00G05D16/00
Inventor 王庆丰李延民
Owner ZHEJIANG UNIV