摘要
作为反应堆堆内构件中一个重要的堆芯支承结构,堆芯支承下板在反应堆服役期间将承受多种载荷的作用。为了保证其在设计寿期内的结构完整性,需要根据ASME锅炉与压力容器规范(B&PVC)第Ⅲ卷NG分卷,对其开展相关的应力分析和评定。应用ANSYS有限元软件建立堆芯支承下板及其连接部件的三维有限元模型,通过静力分析、瞬态温度场分析和瞬态热应力计算,分别得到机械和热载荷作用下的应力分布,最后根据ASME B&PVC第Ⅲ卷NG分卷开展对堆芯支承下板的结构完整性评定。
As a key core support structure within reactor internals,the lower core support plate(LCSP)would undergo various loads during reactor′s service period.To ensure its structural integrity throughout its design life,it is necessary to perform stress analysis and assessment for LCSP according to ASME Boiler&Pressure Vessel Code(B&PVC)SectionⅢ,Subsection NG.A three-dimensional finite element model is firstly established for LCSP and related components with the ANSYS FEA software.Then by static analysis,thermal transient analysis and thermal stress calculation,the stress distribution under the mechanical and thermal loads are obtained,respectively.Finally,the structural integrity assessment for LCSP is conducted in accordance with ASME B&PVC SectionⅢ,Subsection NG.
作者
高永建
GAO Yongjian(Shanghai Nuclear Engineering Research&Design Institute Co.,Ltd.,Shanghai 200233,China)
出处
《压力容器》
北大核心
2021年第4期42-47,71,共7页
Pressure Vessel Technology
基金
国家科技重大专项“大型先进压水堆及高温气冷堆核电站”(2017ZX06004001)。
关键词
反应堆
堆内构件
堆芯支承下板
热瞬态
结构完整性
nuclear reactor
reactor internals
lower core support plate
thermal transient
structural integrity
