摘要
控制棒组件是快堆的重要安全构件,其管脚几何结构对于流动特性具有显著影响。通过水力实验研究了板式节流件管脚的流动特性,并对流体-结构耦合数值模拟方法进行了验证。结果显示:减小节流板厚度、增加连杆直径均可提高管脚节流能力;无量纲厚径比Ha=0.5、连杆直径20 mm的板式节流件管脚具有最优的流动特性。针对板式节流件管脚在实验中存在的缺陷,提出了孔板节流件作为替代方案,经验证,两类管脚速度、压力分布基本一致,该替代方案可行。
The control assembly is an important safety component of sodium-cooled fast reactor.The entry-tube geometrical structure has a significant effect on flow characteristics.The flow characteristics of plate-throttle entry-tube were investigated by hydraulic experiment,and the fluid-structure coupling numerical simulation was verified by experiment data.The results show that reducing the thickness of throttle plate and increasing the diameter of connecting rod can effectively improve the entry-tube throttling capacity.Considering the limitation of flow velocity,the dimensionless thickness-diameter ratio of 0.5 and connecting rod diameter of 20 mm are regarded as the optimum structure parameters of entry-tube.Due to the shortage of plate-throttle entry-tube in experiment,an alternative project of square-groove entry-tube was proposed.It is verified that this project is feasible with the similar flow velocity and pressure distribution in two types of entry-tubes.
作者
秦亥琦
陆道纲
刘少华
王雨
唐甲璇
钟达文
QIN Haiqi;LU Daogang;LIU Shaohua;WANG Yu;TANG Jiaxuan;ZHONG Dawen(School of Nuclear Science and Engineering,North China Electric Power University,Beijing 102206,China;Beijing Key Laboratory of Passive Nuclear Safety Technology,Beijing 102206,China)
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2020年第8期1361-1370,共10页
Atomic Energy Science and Technology
基金
中央高校基本科研业务费专项资金资助项目(2019QN094,2019QN096)。
关键词
快堆控制棒组件
板式节流件管脚
孔板节流件管脚
fast reactor control assembly
plate-throttle entry-tube
square-groove entry-tube
