Thermal analysis of the cryostat feed through for the ITER Tokamak TF feeder  

作　　者：张善文 宋云涛 陆坤 王忠伟 张剑峰 秦永法 

机构地区：[1]College of Mechanical Engineering Yangzhou University, Yangzhou 225127, People's Republic of China [2]Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 200031, People's Republic of China

出　　处：《Plasma Science and Technology》2017年第4期99-106,共8页等离子体科学和技术（英文版）

基　　金：support of the Province Postdoctoral Foundation of Jiangsu (1501164B);the Technical Innovation Nurturing Foundationof Yangzhou University(2015CXJ016);China Postdoctoral Science Foundation(2016M600447)

摘　　要：In Tokamaks,the toroidal field （TF） coil feeder is an important component that is used to supply the cryogens and electrical power for the TF coils.As a part of the TF feeder,the cryostat-feed through （CFT） is subject to low temperatures of 9 and 80 K inside and room temperature of 300 K outside.Based on the features of the International Thermonuclear Experimental Reactor TF feeder,the thermal performance of the CFT under the nominal conditions is studied.Taking into account the conductive,convective and radiation heat transfer,the finite element model of the CFT is built.Transient thermal analysis is performed to determine the temperatures of the CFT on the 9th day of cooldown.The model is assessed by comparing the cooling curves of the CFT after 9 days.If the simulation and experimental results are the same,the finite element model can be considered as calibrated.The model predicts that the cooling time will be approximately 26 days and the temperature distribution and heat load of the main components are obtained when the CFT reaches thermal equilibrium.This study provides a valid quantitative characterization of the CFT design.In Tokamaks,the toroidal field （TF） coil feeder is an important component that is used to supply the cryogens and electrical power for the TF coils.As a part of the TF feeder,the cryostat-feed through （CFT） is subject to low temperatures of 9 and 80 K inside and room temperature of 300 K outside.Based on the features of the International Thermonuclear Experimental Reactor TF feeder,the thermal performance of the CFT under the nominal conditions is studied.Taking into account the conductive,convective and radiation heat transfer,the finite element model of the CFT is built.Transient thermal analysis is performed to determine the temperatures of the CFT on the 9th day of cooldown.The model is assessed by comparing the cooling curves of the CFT after 9 days.If the simulation and experimental results are the same,the finite element model can be considered as calibrated.The model predicts that the cooling time will be approximately 26 days and the temperature distribution and heat load of the main components are obtained when the CFT reaches thermal equilibrium.This study provides a valid quantitative characterization of the CFT design.

关 键 词：thermal analysis TOKAMAK TF feeder CFT 

分 类 号：TL631.24[核科学技术—核技术及应用] TN948.52[电子电信—信号与信息处理]