Development of water-cooled blanket concept with pressure tightness against in-box LOCA for JA DEMO
Development of water-cooled blanket concept with pressure tightness against in-box LOCA for JA DEMO
复制标题
为 JA DEMO 开发具有抗箱内 LOCA 压力密封性的水冷毯概念
DOI：
10.1016/j.fusengdes.2019.01.107
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发表时间：
2019
影响因子：
1.7
通讯作者：
Joint Special Design Team for Fusion Demo
中科院分区：
文献类型：
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作者：
Y. Someya;Hironobu Kudo;K. Tobita;R. Hiwatari;Y. Sakamoto;Joint Special Design Team for Fusion Demo
以加压水冷固体增殖包层为基础，进行了抗箱内失水事故的压力密封增殖包层模块的概念设计。DEMO的冷却水在15.5 MPa和290 ºC-325 ºC的PWR水条件下运行。在该设计中，模块的繁殖区域被划分为具有肋结构的0.1平方米的单元，并且具有简单的内部，用于使用Li 2 TiO 3卵石和Be 12 Ti卵石的混合卵石床的大规模生产。经应力分析，需要0.015m厚的肋才能承受17.2MPa的设计压力。包层模块冷却系统是根据压水堆水条件通过流体动力学分析设计的，其出口冷却剂温度和压降分别为321 ºC和0.32 MPa。有人发现，自给自足的氚生产很可能是满意的包层径向宽度厚度为0.70米或更大，并与一个想法，以提高TBR的冷却剂是从现有的轻水重水。
A conceptual design of breeding blanket module with pressure tightness against in-box LOCA has been carried out, based on a pressurized water-cooled solid breeder blanket. The cooling water for DEMO is operated at the PWR water conditions of 15.5 MPa and 290 ºC-325 ºC. In this design, the breeding area of the module is divided into 0.1-m-squared cells with rib structure and has simple interior for mass production using a mixed pebbles bed of Li2TiO3pebbles and Be12Ti ones. As a result, a rib with the thickness of 0.015m is needed to withstand the design pressure of 17.2 MPa by a stress analysis. The cooling system for the blanket module is designed by fluid dynamics analysis based on the PWR water conditions, and the outlet coolant temperature and the pressure drop are 321 ºC and 0.32 MPa, respectively. It was found that the self-sufficient production of tritium is likely to be satisfied with the blanket radial width thickness of 0.70 m or more and with an idea to improve TBR that the coolant is changed from existing light water to heavy water.