低温氦气体轴承透平膨胀机的设计  

DESIGN OF CRYOGENIC HELIUM EXPANSION TURBINE

作　　者：侯予[1] 陈纯正[1] 熊联友[1] 刘立强[1] 王瑾[1] 

机构地区：[1]西安交通大学低温工程研究所,西安710049

出　　处：《低温工程》2003年第3期7-11,16,共6页Cryogenics

基　　金：国家自然科学基金资助项目 ( 50 2 0 6 0 15);高等学校博士学科点专项科研基金资助项目( 2 0 0 2 0 6 980 2 8);西安交通大学科学研究基金项目

摘　　要：针对我国氦透平膨胀机的研制任务 ,设计了一台氦气体轴承透平膨胀机。从机械性能方面就该氦透平膨胀机开展了理论与试验研究 ,以高稳定性为主要目标进行了氦透平膨胀机的结构设计 ,实现了绝热及密封、快速装拆等要求。氦透平常温、低温实验证明该机具有良好的热力性能及机械性能 ,本文侧重于对该氦透平膨胀机结构设计的探讨。To accomplish the research task of helium turbo expander used in a important item of space area,a helium turbo expander equipped with gas bearings is designed,for paying attention to the rotor bearing system stability,gas seal and adiabatic problems As the result of the design,the main parts of the machine can be replaced quickly The turbine performance tests had been done under the atmosphere and cryogenic environment The results of the tests show that the expansion turbine has both excellent mechanical and thermal performance The mechanical performance of the helium expansion turbine is mainly studied in this paper

关 键 词：低温 氦气体轴承透平膨胀机 热力性能 机械性能 航天技术 空间环境模拟技术 高真空环境 

分 类 号：TB653[一般工业技术—制冷工程] TB751