Gas exhaust device used for closed type hydraulic system

Abstract

The invention discloses a gas exhaust device used for a closed type hydraulic system, and belongs to the technical field of hydraulic systems. The gas exhaust device comprises a vacuum pump, an air compressor, a second stop valve, a third stop valve, a three-way joint, a sealing cover, a swing mechanism and an incentive mechanism, wherein the incentive mechanism is mounted on the side surface of the oil tank; the open end of the sealed cover is in butt joint with an oil bag, and is closed to form a sealed cavity; the closed end of the sealed cavity is connected with the swing mechanism through a ball head hinge; the three-way joint is mounted on the side surface of the sealing cover; the vacuum pump and the air compressor are separately connected with the two ends of the three-way joint on the side surface of the sealing cover through pipelines; and the stop valves are separately connected on pipelines for connecting the vacuum pump, the air compressor and the three-way joint. According to the gas exhaust device disclosed by the invention, air in hydraulic oil is separated out in a vacuum-pumping mode, and air is exhausted out of the system by uniformly extruding under external pressure; and the swing mechanism is matched with the incentive mechanism for use, so that air bubbles in seams are exhausted of the system, and therefore, gas in the closed type hydraulic system is purified.

Description

technical field [0001] The invention belongs to the technical field of hydraulic systems, and in particular relates to an exhaust device for a closed hydraulic system. Background technique [0002] At present, the buoyancy driving unit used for the deep-sea submersible to realize the up and down movement generally adopts a closed hydraulic system. Due to the system assembly and the hydraulic oil itself, it is easy to mix air into the hydraulic system; the existence of air in the hydraulic oil can easily make the closed hydraulic system Cavitation occurs when the hydraulic system works under high pressure and depth, which affects the life of hydraulic components and reduces the reliability of the system; the traditional hydraulic system exhaust method can only evacuate the gas that has not dissolved in the oil in the system, but cannot effectively discharge the gaps in the system Medium and small gas bubbles and a small amount of gas dissolved in hydraulic oil under normal pr...

AI Technical Summary

Problems solved by technology

[0002] At present, the buoyancy drive unit used for deep-sea submersibles to realize up and down movement generally adopts a closed hydraulic system. Due to the system assembly and the hydraulic oil itself, it is easy to mix air into the hydraulic system; the existence of air in the hydraulic oil can easily make the closed hydraulic system Cavitation occurs when the hydraulic system works under high pressure and deep depth, which affects the life of hydraulic components and reduces the reliability of the system; the traditional hydraulic system exhaust method can only evacuate the gas that has not dissolved in the oil in the system, but cannot effectively discharge the gaps in the system Gas with medium and small bubbles and a small amount of gas dissolved in hydraulic oil under normal pressure

Images