核电站超级管道管嘴承载能力有限元分析

FEA on Loading Capacity for Super Pipe Mouthpiece of Nuclear Power Station

描述了核电站超级管道的管嘴结构及其基本组成,借助于有限元分析软件ANSYS对核电站主蒸汽系统超级管道管嘴在设计、扰动及事故等3类工况下的承载能力进行分析,计算结果表明超级管嘴在不同工况下的应力最大值均满足法国压水堆核岛机械设备设备设计和建造规则RCCMC3200规定的许用范围,完全符合设计要求,依据应力图即能够很直观的看到管嘴根部(沿轴向)是应力值最大的地方。为后续设计及分析核电站主蒸汽系统超级管道提供了一定的理论依据。

This paper introduces the basic structure for VVP System super pipe and hot extrusion mouthpiece of nuclear power station,By ANSYS,The loading capacity of mouthpiece under the three working conditions has been calculated.The result is that the max stress in different working conditions can satisfy the allowable load provided in RCCM C3200.Which accord with the design demands.It illustrate that the maximum stress is the root of mouthpiece along axial pipe through the stress distribution diagram.Which provides theory basis for designing the main steam Super Pipe.