负压工况下压力面积补强法安全性的探讨  

Discussion on the Safety of the Pressure Area Reinforcement Method under Negative Pressure Conditions

作　　者：马忠明 左安达 孙忠岩 MA Zhong-ming;ZUO An-da;SUN Zhong-yan(Liaocheng Luxi Chemical Engineering Design Co.,Ltd.,Liaocheng Shandong 252000,China;Wison Engineering(China)Co.,Ltd,Shanghai 201210,China)

机构地区：[1]聊城市鲁西化工工程设计有限责任公司,山东聊城252000 [2]惠生工程(中国)有限公司,上海201210

出　　处：《化肥设计》2025年第1期26-31,共6页Chemical Fertilizer Design

摘　　要：介绍了EN 13445标准规范中用于开孔补强计算的压力面积法,结合实例,利用ANSYS有限元分析软件及特征值法,对负压工况下筒体上的开孔进行应力分析,揭示不同直径的开孔接管对容器负压承载极限的影响规律,通过对有限元计算结果进行对比和分析,进而对EN 13445标准中给出的负压工况下压力容器开孔补强的计算要求进行验证,并对该要求用于负压容器开孔补强计算的安全性进行了探讨。The pressure area method adopted in EN 13445 standard for the calculation of open hole reinforcement is introduced.Practical examples are cited when using ANSYS finite element analysis software and eigenvalue method for stress analysis on the cylinder open hole under negative pressure conditions,and the rule of influence of the open hole nozzles with different diameters on the negative pressure bearing limit of containers is revealed.The results of finite element calculation are compared and analyzed,and the calculation requirements of open hole reinforcement for pressure vessels under negative pressure conditions given in EN 13445 are then verified,and the safety of this requirement in the calculation of open hole reinforcement for negative pressure vessels is discussed.

关 键 词：压力面积法 负压工况 EN 13445 ANSYS 有限元 

分 类 号：TH702[机械工程—仪器科学与技术] TE965[机械工程—精密仪器及机械]