Underwater hydraulic compensating device and hydraulic system

Abstract

The invention discloses an underwater hydraulic compensating device which comprises a hydraulic motor and a pressure compensating device for supplementing hydraulic oil into the hydraulic motor. The device further comprises a pressure resisting container, the hydraulic motor and the pressure compensating device are both arranged inside the pressure resisting container, the pressure resisting container and an oil cavity of the pressure compensating device are filled with hydraulic oil, an oil inlet of the pressure compensating device is communicated with hydraulic oil inside the pressure resisting container, and an oil outlet of the pressure compensating device is communicated with the interior of the shell of the hydraulic motor. According to the underwater hydraulic compensating device, the problem that a hydraulic system collapses due to the fact that the hydraulic compensating device is damaged in the prior art can be solved, the hydraulic motor is protected by the pressure resisting container and the pressure compensating device, in additional, the cooling problem of the hydraulic motor can be improved, and finally the service life of the hydraulic motor is prolonged.

Description

technical field [0001] The invention relates to the technical field of hydraulic compensation, and more specifically, relates to an underwater hydraulic compensation device. In addition, it particularly relates to a hydraulic system comprising the above-mentioned underwater hydraulic compensation device. Background technique [0002] The hydraulic system will be affected by the water pressure or mud pressure in the underwater or mud environment. For example, as the water level rises or falls, the load of the hydraulic actuators of the hydraulic system changes constantly. In order to maintain the pressure output constant, Pressure compensation is required for the control branch of the hydraulic system. [0003] The current hydraulic pressure compensation technology mainly includes the following forms, namely passive compensation device and active compensation device. Among them, the passive compensation device mainly uses the diaphragm to sense the external environmental pr...

AI Technical Summary

Problems solved by technology

However, since the elastic elements in the passive compensation device are easily damaged, once the elastic elements are damaged, water flow or mud will enter the hydraulic system, which will cause damage to the hydraulic elements and lead to the collapse of the hydraulic system; The heat dissipation conditions of the hydraulic oil are extremely poor, and the outside of the hydraulic motor cannot exchange heat, which will eventually affect the use of the hydraulic motor, resulting in easy damage to the hydraulic motor and a short service life

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