High-precision pilot pressure reducer

• Main Authors: ZHANG ZHIYUAN, YU WENQUAN, WANG TIANSHU, WANG YUJIAN, LYU MENGLU, LIAN BIN
• Format: Patent
• Language: Chinese; English
• Published: 27.09.2022
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The high-precision pilot pressure reducer comprises a pilot valve and a main valve which are connected in parallel, the pilot valve is a forward pressure reducer, a sensitive back pressure cavity is formed in the back pressure side of the main valve, pressure airflow at an outlet of the pilot valve enters the sensitive back pressure cavity, a main valve moving mechanism is arranged behind the sensitive back pressure cavity, and the high-precision pilot pressure reducer comprises a main valve combination and a main valve spring. The main valve combination comprises a sensitive piston and a high-pressure sealing ring, a backpressure plate moves up and down along a main valve seat, one face of the sensitive piston is a sensitive backpressure cavity, the other face of the sensitive piston is an outlet cavity of the main valve, and the high-pressure sealing ring blocks and seals a communicated air channel between an inlet of the pilot valve and the outlet cavity. The high-precision pilot pressure reducer is small