Instantaneous moving pneumatic device capable of being repeatedly tested and application method

• Main Authors: WANG NANTIAN, CHEN JIUFEN, FAN XIAOHUA, SUN QIZHI, ZHAO JIAN, XU XIAOBIN, ZHAO XIN, HOU FENGWEI, ZHANG DEWEI
• Format: Patent
• Language: Chinese; English
• Published: 17.01.2023
• 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 invention discloses an instantaneous moving pneumatic device capable of being repeatedly tested and an application method, and relates to the field of wind tunnel tests, the instantaneous moving pneumatic device comprises a piston and a piston cylinder, the piston cylinder is connected with a rapid valve through a telescopic rod, and the lower end of the piston cylinder is separated by the end face of the telescopic rod to obtain a first cavity and a second cavity; the longitudinal section of the piston is configured to be of a U-shaped structure, and a spacer ring is arranged on the periphery of the piston. An annular step is arranged in the piston cylinder; a third cavity and a fourth cavity are formed between the piston and the annular step and between the piston cylinder and the piston through spacer rings; an annular groove is formed in the piston cylinder, so that a fifth cavity is defined between the annular groove and the open end of the piston; a sixth cavity is formed in the piston and communica