反应堆压力容器筒体保温层结构间隙对保温效果的影响分析  

作　　者：张亚斌[1] 邱天[1] 罗英[1] 李玉光[1] 周高斌[1] 

机构地区：[1]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213

出　　处：《科技视界》2020年第15期106-112,共7页Science & Technology Vision

摘　　要：评价金属保温层热性能的经验公式方法,对于保温层支承结构和保温层间隙超差问题难以实现有效评价。使用ANSYS Fluent软件对华龙一号筒体保温结构开展仿真分析,分析存在一定热态间隙情况下的漏流情况,间隙越大,漏流量占入口风量的比例就越大;基于间隙漏流量计算结果,进一步分析间隙尺寸和入口风量等泄热敏感参数对筒体保温结构的传热影响,提出保温结构设计中降低间隙泄热影响的措施。The empirical formula method was used to evaluate the thermal properties of the insulation,but it is difficult to evaluate the support structure and the overmuch gap on the insulation.ANSYS Fluent is used to simulate the barrel insulation structure of HPR1000.The wider the structure gap is,the more the proportion of flow leakage rate caused by certain hot gaps is in inlet air volume.Furthermore,based on the calculation results of flow leakage,the influence of heat leakage sensitive parameters such as gap size and inlet air volume on heat transfer performance of barrel insulation structure is analyzed.In the design of the barrel insulation structure,measures to reduce the effect of heat leakage caused by gaps are discussed.

关 键 词：压力容器 筒体保温层 结构间隙 保温效果 

分 类 号：TL351.6[核科学技术—核技术及应用]