ITER校正场线圈过渡馈线真空隔断传热及热应力分析

摘要

The vacuum barrier of ITER correction coil (CC)Feed System is an important component of cryostat feed-though (CFT),which locates at the interface between S-Bend box and CFT in order to ensure the independence of the different vacuum systems of S-Bend box and CFT and facilitate system maintenance According to the function requirement,it introduces its design, establishes a thermal and mechanical finite element model of the vacuum barrier in ANSYS software.Considering the thermal conduction, radiation and effect of outside natural convection on the working scenario of the vacuum barrier,its temperature distribution,heat load of the cryogenic system and the thermal stress is then calculated,which results proves the feasibility of the design of the vacuum barrier,and provides support for the further optimization and test of the vacuum barrier.%ITER校正场线圈馈线系统的真空隔断是过渡馈线中的重要组成部分,位于S弯盒与过渡馈线的接口处,用以保证S弯盒和过渡馈线中不同真空系统的独立性,便于系统维护.针对真空隔断的作用,介绍了其设计结构,使用ANSYS软件建立了真空隔断的热及结构有限元模型,考虑到热传导、热辐射及外部自然对流对真空隔断工作环境的影响,计算了其温度分布、低温区的热载及其热应力,结果验证了真空隔断结构设计的可行性,为真空隔断的进一步优化及试制奠定基础.