基于耐高温CRDM的堆顶结构散热性能研究
Study on Ventilation Heat Transfer Performance of the Reactor Head Package Based on the High-temperature Resistant CRDM
莫少嘉 1方健 1段远刚 1李跃忠 1马若群2
作者信息
- 1. 深圳中广核工程设计有限公司,广东 深圳 518124
- 2. 生态环境部核与辐射安全中心,北京 100082
- 折叠
摘要
对耐高温控制棒驱动机构(CRDM)、取消强制通风的堆顶结构,采用计算流体力学(CFD)方法,基于含内热源的导热与对流耦合原理,分析堆顶结构不同通风形式下的散热性能.通过对自然对流、堆腔池辅助通风、设置围筒等方式进行分析,研究不同方式下反应堆堆顶流场及CRDM线圈的散热效果.研究结果表明:采用堆腔池辅助通风方式,通风散热性能明显优于自然对流冷却方式,线圈温度明显降低;增加围筒装置,可以使更多冷却空气约束在围筒范围内,产生"烟囱效应",通风散热的效果更明显.采用辅助通风方式可以有效提高耐高温CRDM的设计裕量以及一体化堆顶结构的可行性.
Abstract
To study the ventilation heat transfer performance of the reactor head package with high temperature resistant CRDM and without forced ventilation,the computational fluid dynamics(CFD)method is used based on the coupling principle of heat conduction and convection with the internal heat source.According to the analysis of natural convection,auxiliary ventilation,setting enclosure or not,the flow field of reactor head package and heat transfer effects of CRDM coils are studied.The results show that when the auxiliary ventilation mode of the reactor cavity is adopted,the ventilation and heat transfer performance is obviously better than the natural convection cooling mode,and the coil temperature is obviously reduced.When the enclosure device is added,more cooling air can be constrained within the enclosure,resulting in the"chimney effect",and the effect of ventilation heat transfer is better.Auxiliary ventilation can effectively improve the design margin of the high-temperature resistant CRDM and the feasibility of the integrated reactor head package.
关键词
耐高温CRDM/堆顶/辅助通风Key words
High temperature resistant CRDM/Reactor head package/Auxiliary ventilation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据