一种用于液压产品的集排油装置和液压系统

By designing an automatic and tool-operated oil drain block in the hydraulic actuator cavity and using a check valve to achieve controlled oil discharge, the problem of uncontrolled oil leakage is solved, improving the safety of the hydraulic system and flight safety.

CN117847044BActive Publication Date: 2026-07-17XIAN FLIGHT SELF CONTROL INST OF AVIC

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAN FLIGHT SELF CONTROL INST OF AVIC
Filing Date
2023-12-26
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing hydraulic actuators have uncontrolled oil leakage in the actuator cavity, which makes it impossible to detect the leakage problem in time, endangering flight safety. In addition, conventional treatment methods increase the outer structure and space of the actuator cylinder.

Method used

Design an oil collection and drainage device, including an automatic oil drainage baffle and a tool oil drainage baffle. The device uses a one-way valve to automatically or periodically drain the oil in the cavity when the oil pressure exceeds the opening pressure. Oil leakage is eliminated by installing a baffle and a seal in a window designed on the side wall of the actuator cavity.

Benefits of technology

It achieves controlled collection and drainage of oil in the actuator cavity, avoids uncontrolled leakage, improves the safety of the hydraulic system and flight safety, and does not increase the product's external dimensions or oil passage space.

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Abstract

本申请提供了一种用于液压产品的集排油装置和液压系统,集排油装置包括:液压产品的筒体(1)、自动排油挡块(2)和单向阀(4);筒体(1)上开设有第一排油孔(1a),第一排油孔(1a)与液压产品中累积有油液的空腔连通;自动排油挡块(2)安装在第一排油孔(1a)中,自动排油挡块(2)上设置有第一通孔(2a),第一通孔(2a)内安装有单向阀(4),第一通孔(2a)内安装的单向阀(4)的密封体端朝向作动器筒体的空腔,空腔内的油液推动密封体在单向阀(4)内运动以连通单向阀(4)。通过设计一种尺寸小、重量轻、安装拆卸方便、可靠性高的集排油装置,避免作动器空腔中油液不受控泄漏。
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