Leading control type pressure valve of underwater installation hydraulic system for environmental pressure compensation
A technology of environmental pressure and hydraulic system, which is applied in the direction of fluid pressure control, fluid pressure actuation system components, mechanical equipment, etc. It can solve the problems that the pressure compensator has no automatic exhaust device, cannot meet the requirements of automatic oil replenishment, troubles, etc.
Inactive Publication Date: 2006-11-29
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;
[0010] (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 checked and exhausted before entering the water every time, causing unnecessary trouble
[0011] (4) This pressure compensator can only be applied to the whole hydraulic system including the hydraulic source in the seawater environment, and the purpose of pressure compensation can be achieved by installing it on the oil tank
However, for large flow working occasions, due to the influence of hydraulic force, the compensation accuracy is low
Method used
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Embodiment Construction
[0030]As shown in the drawings, the present invention includes: seawater environment pressure sensitive components, automatic exhaust components, automatic oil replenishment components and pilot control type pressure valve components, wherein:
[0031] 1) Pressure sensitive parts in seawater environment: including pressure sensitive parts housing 1, rolling diaphragm 2, fixed plate 3, traction frame 4, pressure plate 5, constant force spring 6, two rollers 7, two bushings 8, piston 9. Piston rod 10, control rod 11 and damper 23. In the housing 1 of the pressure sensitive part, the outer flange of the rolling diaphragm 2 is fixed on the flange of the housing 1, the rolling diaphragm 2 is clamped by the fixed plate 3 and the traction frame 4, and the rolling diaphragm 2 and the traction frame 4 Connected, the rolling diaphragm 2 is in a floating state in the housing of the pressure sensitive component housing 1 . The traction frame 4 is fixedly connected with the drafting end o...
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The invention discloses a kind of pressure compensation pilot control pressure valve in underwater device hydraulic system environment, which is made up of a saline water environment pressure sensitive part, automatic discharging part, automatic make-up part and pressure valve. The device senses the saline water environment pressure through the rolling film piece of the sensitive part, because of the prepress effect of the spring, the compensation pressure is a little higher than the saline water environment pressure. The automatic discharging part is sued for discharging the initial air. The automatic make-up part is used to fill oil to the cavity of the sensitive part. The oil pressure of application pressure sensitive part controls the pilot control pressure valve which has a direct feedback testing function makes the pressure at the inlet of the pressure valve part balances with the saline water environment pressure. The invention overcomes that the compensation precision is low with current pressure compensator; it can't make up oil and discharge air automatically.
Description
technical field [0001] The invention relates to a fluid pressure actuator, in particular to an environment pressure compensation pilot control pressure valve of 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 pressur...
Claims
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IPC IPC(8): F15B21/00G05D16/00F15B13/042F15B21/02
Inventor 王庆丰李延民
Owner ZHEJIANG UNIV