ITER重力支撑的制造设计、认证测试及关键技术研究  

Fabrication Design,Qualification and Key Technologies of ITER Gravity Supports

作　　者：张腾[1] 张博 王宇[3] 李鹏远[1] 何祖娟[3] 魏海鸿 孙振超[1] 侯炳林 康道安[1] Zhang Teng;Zhang Bo;Wang Yu;Li Pengyuan;He Zujuan;Wei Haihong;Sun Zhenchao;Hou Binglin;Kang Daoan(Southwestern Institute of Physics(SWIP),Chengdu,610041,China;China International Nuclear Fusion Energy Program Executive Center(CNDA),Beijing,100081,China;Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]核工业西南物理研究院,成都610041 [2]中国国际核聚变能源计划执行中心,北京100081 [3]中国核动力研究设计院,成都610213

出　　处：《核动力工程》2021年第4期265-269,共5页Nuclear Power Engineering

基　　金：国家磁约束核聚变能发展研究专项(2008GB107000)。

摘　　要：重力支撑(GS)作为国际热核聚变实验堆(ITER)磁体支撑系统的关键部件,不但要承受环向场超导磁体净重以及交变的电磁载荷,同时还需隔离来自杜瓦环的热量以维持环向场超导线圈的热稳定性。本文通过有限元分析和工程测试验证了GS结构设计的可靠性;通过换热分析和真空热交换效率测试验证了热锚连接结构的可靠性;通过全尺寸螺栓77 K疲劳测试验证了螺栓原型件的疲劳性能。在随后的制造过程中,使用液压拉伸器和研制的高精度螺栓伸长量测量装置对所有的螺栓进行了均匀、精确地紧固。真空正压氦检漏的测试结果证明了GS的泄漏率远低于ITER的要求。基于以上工程测试的结果,本文设计的GS的结构是可行的且能运用于ITER装置中。As a key component of the ITER magnet supports,the ITER gravity support(GS)serves not only to bear the weight of the toroidal field(TF)coil superconductor and the alternate electromagnetic force but also to interrupt the heat from the cryostat ring and to ensure the superconductive state of the TF coils.In this paper,the fabrication design of the GS was simulated and verified via the prototype engineering test.The fatigue performance of the 718 studs was qualified by the 77 K prototype fatigue test.The design of the thermal anchor structure was characterized by the heat exchange test which carried out in a vacuum chamber.Subsequently,based on the fabrication design,the hydraulic tensors and the bespoke high precision bolt elongation measuring device were employed to fasten all the studs accurately.Finally,the results of the leakage test in the vacuum chamber indicated that the leakage rate of GS is much lower than that of ITER requirement.Based on the above work,the fabrication design is feasible and can be utilized in the manufacturing of ITER GS.

关 键 词：国际热核聚变实验堆(ITER) 重力支撑(GS) 原型件测试 换热效率测试 高精度预紧 真空正压氦检漏 

分 类 号：TL626[核科学技术—核技术及应用]