摘要
通过仿真研究了不同温度下阀门阀座密封比压的特性,分析不同热膨胀系数对密封比压的影响。结果表明:随着温度的降低,阀门阀座密封比压会稍微增加。此外,在一定范围内,阀芯材料热膨胀系数的变化对密封比压的影响不大,几乎可以忽略。当阀座的热膨胀系数小于1E-5 K^(-1)时,阀座热膨胀系数变化对密封比压的影响不大,随着温度的降低密封比压几乎不变;当阀座材料的热膨胀系数大于1E-5 K^(-1)时,在低温下阀门的密封比压随着阀座热膨胀系数的增大而增大,这为低温阀门选择阀芯和阀座材料提供一定的参考。
The characteristics of the sealing specific pressure of valve seat under different temperature are studied by simulation,and the effect of different thermal expansion coefficient on the specific pressure of valve seat is analyzed.The results show that the sealing specific pressure of valve seat increases slightly with the decrease of temperature.In addition,in a certain range,the change of the thermal expansion coefficient of the valve core material has little effect on the sealing specific pressure,which can almost be ignored.When the coefficient of thermal expansion of the valve seat is less than 1E-5 K^(-1),the change of the coefficient of thermal expansion of the valve seat has little effect on the sealing specific pressure,and the sealing specific pressure is almost constant with the decrease of temperature.When the thermal expansion coefficient of the valve seat material is greater than 1E-5 K^(-1),the sealing specific pressure of the valve increases with the increase of the thermal expansion coefficient of the valve seat at low temperature.This provides a reference for selecting valve core and valve seat material for cryogenic valve.
作者
刘纯
胡树文
钟梦妮
杜兰君
李罗金
LIU Chun;HU Shu-wen;ZHONG Meng-ni;DU Lan-jun;LI Luo-jin(Beijing Aerospace Propulsion Institute,Beijing 100076,China)
出处
《阀门》
2024年第7期884-887,共4页
Chinese Journal of Valve
关键词
阀门
密封比压
温度
热膨胀系数
valve
sealing specific pressure
temperature
thermal expansion coefficient
