压力容器筒体开孔区域补强设计  

Reinforcement Design for the Opening Area of Pressure Vessel Barrel

作　　者：杨洋 樊俊 YANG Yang;FAN Jun

机构地区：[1]东方电气股份有限公司核设备设计所,成都市611731

出　　处：《化工装备技术》2023年第4期30-33,共4页Chemical Equipment Technology

摘　　要：为了解决压力容器开孔补强造成壁厚增加,进而在介质温度快速变化情况下出现结构不稳定的问题,提出了基于支承板和套环的补强结构型式,并采用ANSYS软件进行了分析和验证。结果显示:该补强结构型式可有效补强筒体开孔区域强度,降低该区域的应力水平,最大应力区域的膜应力最大可降低30%,弯曲应力最大可降低90%,峰值应力最大可降低70%;在补强贡献方面,支承板为主导,而套筒为有益补充;支承板在结构纵向对称面两侧布置的角度范围应不小于30°,其补强效果主要体现在降低弯曲应力和峰值应力方面。In order to solve the problem of increased wall thickness caused by the reinforcement of pressure vessel openings,which leads to the loss of structural stability under rapid changes in medium temperature,a reinforcement structure based on support plates and rings was proposed and analyzed and verified using ANSYS software.The results showed that this reinforcement structure type could effectively strengthen the strength of the perforated area of the cylinder,reduce the stress level in this area,and reduce the membrane stress in the maximum stress area by up to 30%,bending stress by up to 90%,and peak stress by up to 70%.In terms of reinforcement contribution,the support plate was dominant,while the sleeve was a beneficial supplement.The angle range of the support plate arranged on both sides of the longitudinal symmetry plane of the structure should not be less than 30°,and its reinforcement effect was mainly reflected in reducing bending stress and peak stress.

关 键 词：压力容器 开孔补强 有限元 ANSYS 

分 类 号：TH49[机械工程—机械制造及自动化]