摘要
为解决运载火箭高压小流量减压阀在低温-40℃下出现出口压力剧烈波动及起动段压力长时间下降的问题,对减压阀进行了动态仿真和试验研究。建立了仿真数学模型,用AMESim工具仿真减压阀的压力、阀芯位移动态特性,结果与试验数据基本一致。研究表明起动段压力长时间下降及压力爬行是因摩擦力所致。改进的高压密封结构,消除了减压阀低温条件下出口压力的剧烈波动。
The dynamic characteristics of pressure relief valve was studied by the simulation and experiment to solve the problems of the outlet pressure fluctuating of pressure relief valve and decreasing when environment temperature was-40℃in this paper.The simulation model was established.The pressure and piston displacement of pressure relief valve were simulated through AMESim programming.The results were good agreed with experiment data.The study showed that the decreasing of the outlet pressure and crawling were caused by friction.The seal structure was improved which eliminated the pressure fluctuating of the valve at low temperature.
出处
《上海航天》
2015年第1期48-53,67,共7页
Aerospace Shanghai
关键词
减压阀
动态特性
泄漏
摩擦力
Pressure relief valve
Dynamics characteristic
Leakage
Friction
作者简介
作者简介：滕浩（1983-），男，工程师，硕士，主要研究方向为运载火箭增压输送系统阀门设计与仿真。
