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详细介绍了ITER驱动的次临界包层结构设计,沿环向360°整个次临界包层被分成36瓣,单瓣包层以等离子工作腔为分界面被分为内、外两部分,分别由第一壁结构、支承结构、燃料区结构、产氚区结构和锆包壳结构等组成。有别于ITER装置现有的小模块包层结构,单瓣内、外包层被设计成一种整体式内置结构,从而减少了裂变燃料区中大量内嵌冷却剂压力管道接头数量、缩短了换料周期并节约了成本。同时考虑到ITER装置本体结构空间对次临界包层的限制,提出了一种既能满足包层热工-流体要求又能实现包层工程焊接安装的管道汇总结构。最后运用Pro/e建模软件建立了包层三维CAD结构图,为后续结构力学分析输出了有限元计算模型。
The design of subcritical cladding structure of ITER drive is introduced in detail. The entire sub-critical cladding along 360 ° of the ring is divided into 36 cavities. The single-chamber cladding is divided into inner and outer parts with plasma working chamber as the interface, A first wall structure, a support structure, a fuel zone structure, a tritium-bearing zone structure and a zirconium cladding structure. Different from the existing small module cladding structure of ITER device, the single-valve inner and outer cladding are designed as an integral built-in structure, thereby reducing the number of large embedded coolant pressure pipe joints in the fission fuel zone and shortening the refueling Cycle and save costs. At the same time, taking into account the limitation of subcritical cladding in the structure space of ITER device, a pipeline aggregation structure that can meet both the thermal and fluid requirements of cladding and the welding installation of cladding engineering is proposed. Finally, Pro / e modeling software was used to build the three-dimensional CAD structural map of the cladding, and the finite element calculation model was output for the subsequent structural mechanics analysis.