烟机入口管线及其膨胀节失效分析有限元计算.pdf

烟机人口管线及其膨胀节失效分析有限元计算 马金华1 蔡善祥1 曾文海2 陈学兵2罗 昕2 (1．合肥通用机械研究院，合肥230031；2．中石化长炼分公司，岳阳414014) 摘要：针对中国石油化工股份有限公司某分公司重油催化裂化装置能量回收系统中三旋至烟 机入口管线上，相继发生管道、法兰、阀门等焊缝处断裂、摆武支架失衡及膨胀节断裂等失效事 故，为分析失效事故原因，本文对该段管线及失效的膨胀节进行了有限元计算与分析，且提出 了改进措施和建议。 关键词：重油催化裂化装置；高温管线；摆式支架；膨胀节；失效分析；有限元计算应力应变评定 Finiteelement forfailure offlue turbine computationanalysis gas its inletlineandexpansionjoint Ma Cai weil—hai2Chen Luoxin2 jin—hualshang—xian91Zeng xue—bin92 General Research (1．Hefei Machinery Institute，Hefei230031； 2．SINOPEC Oil Refinery 414014) Changling Branch，Yueyang suchas at Abstract：Withtothefailureaccident theweldof respect rupture of bracketand of ete．occurred ete．，unbalancependulumtype ruptureexpansionjoint successively onthe fromthethird toflue turbineinletinthe pipeline cycloneseparatorgas energyrecoverysystem for of branch of to residualoil a PetmChina．inorder the catalyticcrackingplant company analyze causesfor蹦lureaccidents．finitedement and aleconductedonthis computationanalysis segment of andthefailed and actionsand are in pipeline expansionjoint improvement suggestionsproposed this paper． oil bracket； Keywords：residualcatalyticcrackingplant；hightemperaturepipeline；pendulumtype