The pressure servo valve with the rapid pressure relief protection function comprises a hydraulic servo valve and a hydraulic electromagnetic valve, the hydraulic servo valve comprises a torque motor, a jet amplifier, a pilot stage and a power stage, and the hydraulic electromagnetic valve comprises a sliding valve assembly, a valve assembly and an electromagnet. The hydraulic servo valve and the hydraulic electromagnetic valve comprise an oil supply port J1, an oil supply port J2, an oil return port R0 and a pressure output port S0, the hydraulic electromagnetic valve comprises a pressure relief hole, a second channel, a third channel, an oil return port R and a pressure output port S. The oil return port R0 is directly communicated with the oil return port R, the pressure output port S0 and the pressure output port S are directly communicated with the pressure relief hole, and the sliding valve assembly can move left and right. When the sliding valve assembly moves to the left end, the second channel is communicated with the second cavity, and when the sliding valve assembly moves to the right end, the pressure relief hole is communicated with the first cavity. Reliability of an aircraft brake system can be improved, a rapid pressure relief function is achieved, no part is added, and the weight and maintenance cost of the servo valve are not increased.

    本发明公开了一种带快速泄压保护的压力伺服阀,包括液压伺服阀和液压电磁阀,液压伺服阀包括力矩马达、射流放大器、先导级、功率级,液压电磁阀包括滑阀组件、活门组件、电磁铁,液压伺服阀和液压电磁阀包括供油口J1、供油口J2、回油口R0、压力输出口S0,液压电磁阀包括泄压孔、第二通道、第三通道、回油口R、压力输出口S,回油口R0和回油口R直接连通,压力输出口S0、压力输出口S和泄压孔直接连通,滑阀组件能够左右移动,当滑阀组件移动到左端时,第二通道与第二腔体连通,当滑阀组件移动到右端时,泄压孔与第一腔体连通。本发明可以提高飞机刹车系统可靠性,实现快速泄压功能未增加任何零部件,不增加伺服阀重量和维护成本。


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    Title :

    Pressure servo valve with rapid pressure relief protection


    Additional title:

    一种带快速泄压保护的压力伺服阀


    Contributors:
    OUYANG XIAOPING (author) / HE FEI (author) / LING ZHENFEI (author) / JIANG HAOYI (author) / YU SHUAI (author) / XIE ZUOJIAN (author) / FANG QUN (author)

    Publication date :

    2024-02-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / B64C AEROPLANES , Flugzeuge / F16K VALVES , Ventile



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