HT-7U超导托卡马克装置真空室结构数值分析

NUMERICAL STRUCTURE ANALYSIS FOR THE VACUUM VESSEL OF HT-7U SUPERCONDUCTING TOKAMAK DEVICE

真空室作为HT-7U超导托卡马克核聚变试验装置主机关键部件,是等离子体运行的直接场所,在装置运行期间,它不仅受到电磁载荷,而且还会受到夹层内压力硼化水和250℃高温烘烤所产生的热应力。首先采用数值模拟方法分析了真空室在等离于体突然破裂以及垂直位移事件诱发HALO电流所产生的电磁载荷,然后借用大型有限元分析程序COSMOS和NASTRAN,分析了真空室在各种工况下的应力分布和位移变形,为超导托卡马克同类装置真空室的结构设计提供了有价值的理论依据。

Vacuum vessel is the location for the operation of plasma as one of the key component for HT-7U superconducting Tokamak device. During it operation the vacuum vessel will endure not only the electromagnetic force but also the pressure of boride water and the thermal stress owing to the 250℃ baking out. Firstly the electromagnetic force under the plasma disruption and vertical displacement event is analyzed using the numerical analysis method. And secondly the stress distribution and displacement for the vacuum vessel is analyzed employing COSMOS and NASTRAN finite element software. Some valuable theory basis and analysis method can be provided for the vacuum vessel of the semblable superconducting tokamak device.