电动气阀动态特性及反力因素的影响

THE INFLUENCE OF REACTION FACTORS ON THE DYNAMIC CHARACTERISTICS OF ELECTROPNEUMATIC VALVES

关键词:  电动气动阀  液体推进剂火箭发动机  动态特性  数值计算

Key words:  Electropneumatic valve  Liquid propellant rocket engine  Dynamic characteristic  Numerical calculation

摘要:

建立了电动气阀吸动过程的数学模型并进行了动态特性的数值计算，详细分析了反力因素对电动气阀动态特性的影响。计算结果表明：该阀的衔铁在被触动后能很快地吸到最小气隙处；适当地减小压缩气的入口压力和弹簧预紧力有利于提高电动气阀的响应能力，有利于延长电动气阀的使用寿命。

Abstract:

he mathematic model is built for the attracting process of the electropneumatic valve, numerical calculation of the dynamic characteristics is presented, and the influence of reaction factors on the dynamic characteristics of the valve is analyzed in detail. The calculated results show that the armature of the valve can be attracted more quickly to the minimum width of solenoid air gap after the circuit is turned on and the armature is touched, and to improve the response characteristics of the valve and to prolong the service life of the valve, it is favourable that the inlet pressure of the compressed gas and the precompression of the spring be properly decreased. The conclusions obtained may be used for reference to the design and manufacture of new electropneumatic valves and solenoid valves.