Pumping speed of cryopump for xenon

作     者：LING Gui-long WEI Li-jun CAI Guo-biao LING Gui-long;WEI Li-jun;CAI Guo-biao

作者机构：School of AstronauticsBeijing University of Aeronautics and Astronautics Unit 93469the Chinese People's Liberation Army 

出 版 物：《航空动力学报》 (Journal of Aerospace Power)

年 卷 期：2015年第30卷第7期

页      面：1731-1736页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0804[工学-仪器科学与技术] 0825[工学-航空宇航科学与技术] 

基　　金：National Defense Science and Industry Bureau the Sino Russian in Cooperation of Spaceflight 

主　　题：vacuum plume large-diameter external cryopump xenon pumping speed test 

摘      要：The xenon pumping speed testing system of the large-diameter external cryopump was designed to meet the plume test requirements for prototype electric *** flowmeter method was utilized to measure the xenon pumping *** test results show that the averaged effective pumping speed of doublecryopumps is 52 200L/s,and that of single-cryopump is 27 100L/*** pumping speed ratio of two configurations is *** can be concluded that the pumping speed has in linear relationship with the number of cryopump,and the coefficient is irrelevant with the gas *** averaged effective pumping speed of xenon is less than its nominal pumping speed,and the averaged pumping efficiency is *** the identical inflow conditions,the averaged effective pumping speed ratio of nitrogen is 0.53,slightly less than the theoretical pumping speed ratio of ***,it can be concluded that results assessment of large-diameter external cryopump design index can guide the engineering application,showing certain reference significance.