文档介绍：低温工程
2012 年第 3 期 No. 3 2012
总第 187 期 CRYOGENICS Sum No. 187
900 ******@4. 5 K 低温超导测试系统
分配阀箱结构设计与分析
洪晨毕延芳倪清袁春燕

中国科学院等离子体物理研究所合肥 230031
摘要为保证结构可靠性,采用有限元分析软件 ANSYS 模拟分配阀箱内部真空下的变形及应
力分布,并对阀箱内部冷屏结构的应力场及温度场进行分析。结果表明采用一种由槽钢和加强块结
合的加强筋形式可以有效的防止阀箱结构失效。而采用铝制冷屏加液氮冷却盘管的形式,在外界热
负荷的作用下,其表面最大温度低于 80 K,其变形程度随吊杆所处圆周直径的增大而减小。
关键词分配阀箱真空室冷屏结构分析
中图分类号 TB657 文献标识码 A 文章编号 1000-6516 2012 03-0036-06
Structural design and analysis of distribution valves box in
900 ******@4. 5 K cryogenic superconducting test facility
Hong Chen Bi Yanfang Ni Qing Yuan Chunyan
, , ,
Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China
,
Abstract To avoid structural failure a simulation evaluating the stress and deformation of distribution
, , ,
valve box and shields mercial finite elements method code ANSYS was conducted. At the end
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a bining two channel beams and four small cubes was designed which can keep the chamber lid
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from failure. Meanwhile the results showed that the maximum temperature on shields made of aluminum al-
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loys is below 80 K and the deformation always reduces with increase of diameter.

Key words distribution valve box vacuum chamber shield structural analysis
设计要求所以该测试必须依赖于一套低温超导测
引言。
1
试平台。该测试平台的核心即氦制冷机 900 W@
,
中国科学院等离子体物理研究所承担了 ITER 4. 5 K 由 Linde Kryotechnik AG 公司提供。其余组
,
International Thermonuclear Exp