主蒸汽管道在瞬态流作用下的结构动力分析  

Structure dynamic analysis of main steam piping under fluid decompression transient loads

作　　者：刘浪 LIU Lang(State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment,Shenzhen 518172,China;China Nuclear Power Design Company,Ltd.(Shenzhen),Shenzhen 518172,China)

机构地区：[1]核电安全监控技术与装备国家重点实验室,广东深圳518172 [2]深圳中广核工程设计有限公司,广东深圳518172

出　　处：《压力容器》2021年第11期59-63,81,共6页Pressure Vessel Technology

基　　金：国家重点研发计划项目(2018YFB1900200)。

摘　　要：核电厂高能管道系统破裂后动态效应的防护设计是纵深防御的重要手段,其中破口引起的管道内瞬态流载荷是决定高能管道结构设计的最主要载荷。基于有限元方法分析了核电厂主蒸汽管道在瞬态流载荷作用下约束刚度和管线部件结构刚度对动力响应的影响,提出一种简化有限元模型的方法,既保证了核电厂安全性,又可提升其经济性。The design of protection against dynamic effects of piping rupture is an important means of defense in depth.Fluid decompression transient loads is the main load that determines the design of pipeline structure.The influence of restraint stiffness of main steam piping of nuclear power plant and stiffness of the piping component structure on the dynamic response of piping system under fluid decompression transient loads was analyzed.A method for simplifying the finite element model was proposed,which not only guarantees the safety of the nuclear power plant,but also can improve its economy.

关 键 词：主蒸汽管道 管道破裂 瞬态流 结构动力分析 

分 类 号：TH49[机械工程—机械制造及自动化] TQ055.8[化学工程]