Pulse wind tunnel operation control system and pulse wind tunnel operation control method

Abstract

The invention relates to a pulse wind tunnel operation control system and pulse wind tunnel operation control method. The system comprises a PLC module, a driving section inflation valve, a driving section deflation valve, a driving section pressure sensor, a 1 / 2 valve, a double film section deflation valve, a double film section pressure sensor, a driven section inflation valve, a driven section deflation valve, a driven section pressure measuring module, a driven section vacuum pumping valve, a test section deflation valve, a test section vacuum pumping valve, a test section pressure sensor and a vacuum machine tool; the PLC module achieves automatic control in a wind tunnel test process, a distributed control mode is adopted, all operation is completed in a test control room, there is need to enter a field for work, a high pressure air source is isolated, and the personnel operation safety is guaranteed.

Description

technical field [0001] The invention relates to a pulse wind tunnel operation control system and a pulse wind tunnel operation control method, belonging to the field of gas path operation control and state monitoring of a hypersonic pulse wind tunnel system. Background technique [0002] A pulse-type wind tunnel refers to a wind tunnel that generates pulsed test airflow in a very short time (tens of milliseconds to 1 second) ("GJB4296 Wind Tunnel Test Terms and Symbols"). The pulse wind tunnel is mainly composed of a driving section, a double membrane section, a driven section, a single membrane, a nozzle and a test section. The main required parameters of the experiment process are Mach number, Reynolds number, total temperature and total pressure. The Mach number is achieved by replacing the nozzle. In order to ensure the pressure ratio before and after the nozzle, the test section needs to be pumped to a low pressure state during the experiment; the Reynolds number is co...

AI Technical Summary

Problems solved by technology

Most of the control work in wind tunnel experiments is done manually by the experimenters, and all high-pressure air sources need to be introduced into the control room for manual control. The entire air source line is long, high in pressure, prone to failure, and unfavorable for maintenance, which poses great safety risks Hidden danger

Secondly, the conventional control method uses manual operation of the valve, and the process of recording status information is observed with the naked eye. The repeatability of the operation control is poor and the data recording is biased.

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