Low-leakage high-response high-reliability pressure servo valve

The invention discloses a low-leakage high-response high-reliability pressure servo valve which comprises a torque motor, a valve body, a sliding valve, a reset spring, an oil inlet nozzle, an oil return nozzle and a baffle, the oil inlet nozzle is tightly attached to the baffle at the zero position...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FANG JINLONG, GUO GAOFENG, WEI LIZHONG, CHEN JIYE, PAN JIANDONG, LIU XIAOYANG, ZHOU XING, LI RUIYANG, LING YANGYANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACTUATING-FLOATS AEROPLANES AIRCRAFT ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL AVIATION BLASTING BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL COCKS COSMONAUTICS DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HELICOPTERS HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TAPS THERMAL INSULATION IN GENERAL TRANSPORTING VALVES VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The invention discloses a low-leakage high-response high-reliability pressure servo valve which comprises a torque motor, a valve body, a sliding valve, a reset spring, an oil inlet nozzle, an oil return nozzle and a baffle, the oil inlet nozzle is tightly attached to the baffle at the zero position, and an initial distance exists between the oil return nozzle and the baffle. The nozzle control cavity pressure and the working oil port pressure act on the left end and the right end of the sliding valve respectively, the rod diameter of the sliding valve is adjusted to enable the acting areas of the two ends to be unequal, the purpose of controlling the high working oil port pressure through the low nozzle control cavity pressure is achieved, and the response speed of the pressure servo valve is increased. A reset spring is installed at the right end of the sliding valve, the sliding valve is pushed to the leftmost end position at the zero position, the working oil port is communicated with the oil return port,