Differential pressure compensator of underwater hydraulic system

Abstract

The invention discloses an underwater hydraulic system differential pressure compensator which is arranged in an installation cabin of a desilting robot and comprises a hydraulic oil side sealing cover, a hydraulic oil side telescopic leather bag sealing flange, a water passing side telescopic leather bag sealing flange and a base, a hydraulic oil side PC sleeve is arranged on the side wall of thehydraulic oil side telescopic leather bag sealing flange and the side wall of the hydraulic oil side sealing cover, the hydraulic oil side telescopic leather bag sealing flange is fixedly connected with the water passing side telescopic leather bag sealing flange, and a water passing side PC sleeve is arranged on the side wall of the water passing side telescopic leather bag sealing flange and the side wall of the base, sliding plungers are connected with the hydraulic oil side PC sleeve and the water passing side PC sleeve in a sliding mode, the invention provides a series of products with the random volume compensation from 2L to 16L, the pre-pressure can be changed at any time, the structure is simple, the manufacturing cost is low, the size is small, the technical universality is high, batch production can be achieved through a prefabricated grinding tool, the product quality is reliable, and the production efficiency is high, and the requirements of integration and miniaturization are achieved.

Description

technical field [0001] The invention relates to the technical field of compensators, in particular to a differential pressure compensator for an underwater hydraulic system. Background technique [0002] The pressure difference compensation of the underwater hydraulic system has always been a difficult point in underwater hydraulics. The pressure difference compensators that can be seen on the market include telescopic bladder type, bellows type and metal thin mode. The same feature of them is a thin-walled container. A certain amount of elastic deformation is allowed to equalize the pressure difference change. The disadvantages are that the technical versatility is not strong, it is difficult to form serialized products, the service life is short, the reliability is poor, and most of them are special-shaped products, it is difficult to arrange and install, and the existing underwater hydraulic equipment generally has certain operations according to the underwater terrain. ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a differential pressure compensator for an underwater hydraulic system to solve the problem in the above-mentioned background art that most traditional differential pressure compensators can only set a fixed pressure and cannot set different preloads according to the range of variation.

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