| Design of the Cryostat for HT—7U superconducting Tokamak |
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| 引用本文： | 郁杰,武松涛,宋云涛,翁佩德.Design of the Cryostat for HT—7U superconducting Tokamak[J].等离子体科学和技术,2002,4(3):1297-1304. |
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| 作者姓名： | 郁杰 武松涛 宋云涛 翁佩德 |
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| 作者单位： | InstituteofPlasmaPhysics,ChineseAcademyofSciences,Hefei230031,China |
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| 基金项目： | This work was supported by National Meg-Science Engineering Project of Chinese Government. |
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| 摘 要： | The cryostat of HT-7U tokamak is a large vacuum vessel surrounding the entire basic machine with a cylindrical shell,a dished top and a flat bottom.The main function of HT-7U cryostat is to provide a thermal barrier between an ambient temperature test hall and a liquid helium-cooled superconducting magnet.The loads applied to the cryostat are from sources of vacuum pressure,dead weight,seismic events and electromagnetic forces originated by eddy currents.It also provides feed-through penetrations for all the conecting elements inside and outside the cryostat.The main material selected for the cryostat is stainless steel 304L.The structural analyses including buckling for the cryostat vessel under the plasma operation condition have been carried out by using a finite element code.Stress analysis results show that the maximum stress intensity was below the allowable value.In this paper,the structural analyses and design of HT-7U cryostat are emphasized.
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| 关 键 词： | 超导体Tokamak 低温恒温器 设计 |
Design of the Cryostat for HT-7U Superconducting Tokamak |
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| Abstract: | The cryostat of HT-7U tokamak is a large vacuum vessel surrounding the entire basic machine with a cylindrical shell, a dished top and a flat bottom. The main function of HT-7U cryostat is to provide a thermal barrier between an ambient temperature test hall and a liquid helium-cooled superconducting magnet. The loads applied to the cryostat are from sources of vacuum pressure, dead weight, seismic events and electromagnetic forces originated by eddy currents. It also provides feed-through penetrations for all the connecting elements inside and outside the cryostat. The main material selected for the cryostat is stainless steel 304L. The structural analyses including buckling for the cryostat vessel under the plasma operation condition have been carried out by using a finite element code. Stress analysis results show that the maximum stress intensity was below the allowable value. In this paper, the structural analyses and design of HT-7U cryostat are emphasized. |
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