某项目主泵轴封水管线固定点设计优化

摘要

核级管道的应力分析是为了保证管道以及与其相连的设备、支架的安全.某研发项目管道需要考虑破管载荷,增加破管载荷后管道支架需要承受较大载荷,尤其是固定点,由于土建已经固化施工,埋板的边界条件差,导致埋板应力及混凝土应力不通过,通过调整固定点的位置来改善边界条件,然后再改变埋板形式,最终埋板应力比0.63,混凝土应力比0.67.使用Pipestress软件对轴封水管线进行静力学和动力学分析.经过分析,管线在承受自重、压力、热膨胀、地震、破管载荷的作用下,满足RCC-M规范应力评定准则和可运行要求.%The purpose of piping analysis was to demonstrate the safety of piping,equipments,supports and other attachments.Rupture loading was shoud to be considered in this project.The increase of the support load was too great,especially the fixed point.The ratio of buried plate and concrete stress did not pass by poor boundary conditions and completed civil construction.The boundary condition could be im-proved by moving the fixed point position,and then changed the buried plate form,the final stress ratio of buried plate and concrete is respectively 0.63 and 0.67.Pipestress software is used to the static and dy-namic analysis of the shaft seal water pipe.According to the stress analysis results.The design of pressuri-zer discharge piping meet the requirements in RCC -M code and functional requirement under dead-weight,pressure,thermal expansion and rupture loading.