中国聚变工程实验堆主机真空室结构设计与分析

Structural design and analysis of vacuum vessel for China fusion engineering experimental reactor

中国聚变工程实验堆(CFETR)是中国在研的新一代大型全超导托卡马克核聚变能源工程验证设施,真空室是CFETR工程设计中接口较为复杂,也是核安全部件中较为重要的大型真空压力容器,位于磁体系统内部,安装有大量的堆内部件和复杂的管路,是一个D形截面的双层壳结构的真空压力容器,环向分为16个扇形段,包含真空室主体、窗口和支撑等,是保证装置安全运行的重要的结构承力部件。运用有限元方法对真空室强度进行结构强度分析计算,对危险工况的计算分析结果表明,真空室的设计达到预期的设计目标,能够满足CFETR装置安全运行的要求。

China Fusion Engineering Test Reactor(CFETR)is the new generation of large-scale superconducting tokamak nuclear fusion engineering experimental reactor being researched and developed in China.The vacuum vessel is the most complex interface and important vacuum component which is responsible for nuclear safety of CFETR.It is located in the magnet system within a large number of in-vessel components and complex pipelines.The vacuum vessel has double shell structure with D-shaped cross-section,the circumferential section is divided into 16 fan-shaped segments,including the main body,ports and supports of the vacuum vessel,which is an important structural load-bearing part to ensure the safe operation of the plant.The finite element method was used to analyze and calculate the structural strength of the vacuum vessel,and the dangerous working conditions were calculated and analyzed,the calculation and analysis results show that the current design of the vacuum vessel achieves the expected design goal and can meet the requirements of the safe operation of the CFETR.