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介绍了一种双工况流量调节阀的原理与设计方法,利用上游贮箱压力作为控制气调节阀芯位移,控制阀门开启与工况调节,实现飞行用挤压式供给系统的启动以及流量快速调节.分析了阀门关键设计参数:敏感元件外径、弹簧刚度和初始压缩量对阀芯位移的影响;通过试验验证了阀门的压降损失在2种工况下能分别保持固定值;对采用该阀门的供给系统进行了试验,试验中阀门开启迅速,成功实现了氧化剂供给系统的流量调节,其中第1工况阶段流量约4.5kg/s,第2工况阶段流量为2.0kg/s,工况转换较迅速,达到了预期值,这说明阀门的原理和设计方法是可行的.
A principle and design method of double condition flow control valve are introduced. By using the upstream pressure of the tank as the control valve to adjust the displacement of the valve spool, the control valve is opened and the operating conditions are adjusted so as to realize the start of the squeeze supply system for flight and the fast flow rate The key design parameters of the valve were analyzed: the influence of the external diameter of the sensitive element, the spring stiffness and the initial compression on the displacement of the valve plug was analyzed; the pressure drop loss of the valve was verified to be a fixed value under the two conditions by the test; The valve supply system was tested in the test valve is opened quickly, the successful realization of the oxidant supply system flow regulation, of which the first working condition of the flow rate of about 4.5kg / s, the second working condition of the flow rate of 2.0kg / s, Working conditions change quickly, reaching the expected value, indicating that the principle of the valve and the design method is feasible.