热管堆堆芯基体结构高温力学行为分析  

Mechanical Behavior Analysis of Heat Pipe Reactor Core Matrix Structure at High Temperature

作　　者：田俊 苏东川[1] 李辉 熊夫睿[1] 刘长军[2] 毕鹏华 谈建平[2] Tian Jun;Su Dongchuan;Li Hui;Xiong Furui;Liu Changjun;Bi Penghua;Tan Jianping(Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu,610213,China;School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai,200237,China)

机构地区：[1]中国核动力研究设计院核反应堆系统设计重点实验室,成都610213 [2]华东理工大学机械与动力工程学院,上海200237

出　　处：《核动力工程》2023年第1期217-221,共5页Nuclear Power Engineering

摘　　要：为研究热管堆堆芯基体结构高温下的热应力失效行为,以简化的多孔基体结构为研究对象,结合Megapower 5 MW(热功率)热管堆的设计参数,制定了正常工况和异常工况2种工况下的高温试验方案,其中异常工况考虑了单根热管失效。宏观检测结果显示基体结构未发生明显的变形与失效,结合数值分析方法获得了基体结构在2种工况条件下的温度分布和应力-应变响应,进一步说明了在试验条件下基体结构并不会发生静强度失效和塑性垮塌失效。本研究为明确热管堆堆芯基体结构的强度设计准则奠定了基础。In order to study the thermal stress failure behavior of the core matrix of the heat pipe reactor at high temperature,two high temperature test schemes were developed based on the simplified porous matrix structure and the design parameters of Megapower 5 MWt heat pipe reactor:normal condition and abnormal condition,in which the failure of a single heat pipe is considered under abnormal condition.The macroscopic test results show that there is no obvious deformation and failure of the matrix structure.Combined with numerical analysis method,the temperature distribution and stress-strain response of the matrix structure under two conditions are obtained,which further explains that the static strength failure and plastic collapse failure of the matrix structure will not occur under the test conditions.This study lays a foundation for defining the strength design criteria of the core matrix structure of the heat pipe reactor.

关 键 词：热管堆 堆芯基体 高温 力学分析 

分 类 号：TL429[核科学技术—核技术及应用]