摘要
分别采用高分子聚合物PTFE、PCTFE和PEEK作为低温调节阀阀座软密封的密封材料,在常温(300K)情况下,对比研究了采用不同密封材料的低温阀阀座的漏率与密封比压的关系.在此基础上,测试了不同进口压力下阀座的密封漏率,以及密封性能对压力的稳定性.试验分析结果表明,采用PCTFE密封材料的低温阀阀座不仅具有优异的密封性能,而且在不同的工作压力条件下,漏率与压力呈线性变化,具有较高的压力稳定性.
Polymer PTFE,PCTFE and PEEK were used as the valve seat soft sealing materials of vale seat for cryogenic control valve and the relationship between leakage rate and sealing pressure was analyzed at room temperature（300K）.Based on those results,the tests of valve seat＇s leakage rate and stability in different inlet pressure were carried out.Tests analysis results showed that the cryogenic valve with PCTFE as the valve seat soft material had excellent sealing performance and higher pressure stability in different inlet pressure.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2015年第5期441-444,449,共5页
Transactions of Beijing Institute of Technology
基金
航天低温推进剂技术国家重点实验室基金资助课题(SKLTSCP 1210)
关键词
低温阀
阀座
软密封
漏率
聚合物材料
cryogenic control valve
valve seat
soft sealing
leakage rate
polymer materials
