摘要
核电厂稳压器波动管热分层现象对波动管造成破坏结构完整性及超预期的支承位移和载荷等潜在风险,为了改善波动管热分层现象,对三代核电机组的稳压器波动管进行了布置改进,并对波动管热分层及热位移开展了监测试验。建立管道力学分析模型,对热分层和热位移试验结果进行了分析,采用导热反问题求解方法将测量的外壁面温度反演为内壁面温度,分析了导热反问题求解方法对计算结果的影响,将理论分析位移与测量位移进行了对比。结果表明:采用导热反问题得到的理论计算位移与测量位移差别较未采用时小,导热反问题求解方法能有效提高波动管热分层试验分析的准确性。
Thermal stratification of pressurizer surge line results in the potential threatens for the integrality of surge line,unexpected displacements and loadings of the piping supports.In order to alleviate the thermal stratification,the layout of surge line was improved.Monitoring test of the thermal displacements and temperature of surge line were conducted during the thermal function test.Test temperatures were converted into the inner wall temperature by using the heat conduction inverse problem solving method.The effect of the heat conduction inverse problem on the calculate results were studied.All the calculated displacements were compared with the test displacements.The difference between the displacements calculated by the heat conduction inverse problem solving method and that tested was small.The results show that the heat conduction inverse problem solving method can improve the precision in analyzing the results of thermal stratification test of pressurizer surge line.
作者
王新军
艾红雷
张毅雄
袁艳丽
吴亚波
李丽娟
Wang Xinjun;Ai Honglei;Zhang Yixiong;Yuan Yanli;Wu Yabo;Li Lijuan(Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu,610213,China)
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2020年第S02期74-78,共5页
Nuclear Power Engineering
关键词
导热反问题
稳压器波动管
热分层
位移
Heat conduction inverse problem
Pressurizer surge line
Thermal stratification
Displacement
