Self-pressurized pressurizing oil tank

Abstract

The invention discloses a self-pressurized pressurizing oil tank which comprises an oil tank housing and a pressurizing device. The pressurizing device comprises an oil tank back cover, wherein the oil tank back cover is hermetically connected to the oil tank housing, an oil inlet and a plunger guide hole are formed in the oil tank back cover, the oil inlet communicates to the plunger guide hole through a communicating channel pre-arranged in the oil tank back cover, and the oil inlet is in abutted communication to a high pressure oilway pre-arranged in the oil tank housing; a pressurizing plunger assembly capable of stretching is arranged in the plunger guide hole, an exposed end of the plunger guide hole leans against a pressurizing piston, an elastic component is arranged on the periphery of the pressurizing plunger assembly, and two ends of the elastic component lean against the oil tank back cover and the pressurizing piston, separately. By adopting a self-pressurizing mode, the self-pressurized pressurizing oil tank can provide a high pressure in a working state of a system to guarantee a self-suction property of a hydraulic pump in a high rotating speed condition and keep relatively low pressure in a non-working state to provide long-term storage sealing reliability.

Description

technical field [0001] The invention relates to the technical field of pressurized fuel tanks, in particular to a self-pressurized pressurized fuel tank. Background technique [0002] As an important part of the integrated electro-hydraulic servo system, the pressurized oil tank has the functions of storing and providing a certain pressure of working medium, heat dissipation and compensation. [0003] The existing pressurized oil tank generally adopts a double booster spring structure to act on the fuel tank piston, and the pressurization is realized through the pre-compression design of the booster spring. It has the characteristics of simple structure, but it has high requirements for the stability of the booster spring. During long-term work or long-term storage, it is inevitable that there will be pressure changes caused by plastic deformation, especially in the case of high pressure, the higher the stiffness of the booster spring The higher the requirements for the sta...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new type of pressurized oil tank to solve the problem of simple structure and low stability of the double pressurized spring structure, especially in high-speed electro-hydraulic servo systems with hydraulic pump speeds exceeding 12000r / min. The oil absorption performance of the hydraulic pump cannot be guaranteed, which limits the performance of the system

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