大型储罐挠性接头浮顶排水装置应力分析  

Stress Analysis of Floating Roof Drainage Device with Flexible Joints of Large Scale Storage Tank

作　　者：崔亚梅 王成[1] 远双杰[1] CUI Ya-mei;WANG Cheng;YUAN Shuang-jie(China Petroleum Pipeline Engineering Co.Ltd.,Langfang065000,China)

机构地区：[1]中国石油天然气管道工程有限公司,河北廊坊065000

出　　处：《石油化工设备》2021年第5期13-16,共4页Petro-Chemical Equipment

基　　金：“十三五”国家重点研发计划:国家石油及天然气储备库安全保障技术与装备研发(2017YFC0805802)。

摘　　要：大型储罐使用的挠性接头浮顶排水装置具有操作简单、安装方便及制作成本低等优点,但在罐内液位变化和浮盘晃动时容易撕裂,造成储罐漏油事故。应用有限元分析软件,针对液位工况进行了排水装置软管运动位移分布和结构应力分布模拟,针对浮盘工况进行了复合软管结构的应力分布模拟,分析了结构的应力变化规律和危险点位置。研究结果表明,复合型软管应力随罐内液位的增高而增大,最大应力出现在复合型软管与接管接合部位。对浮盘整体平动0.1 m的极限工况进行了模拟,结果表明,浮顶的微小平动会对排水装置的受力产生影响,造成排水软管部分应力增大。The flexible joint floating roof drainage device used in large storage tanks has the advantages of simple operation,convenient installation,and low production cost,but it is easy to tear when the liquid level in the tank changes and the floating roof shakes,causing oil leakage accidents in the storage tank.By using finite element analysis software,simulations of displacement distribution and structural stress distribution of drainage device hoses were carried out for liquid level conditions,and stress distribution simulations of composite hose structures were carried out for floating roof conditions,and the stress change law and dangerous position of the structure were analyzed.The research results show that the stress of the composite hose increases with the increase of the liquid level in the tank,and the maximum stress occurs at the junction of the composite hose and the nozzle.The limit working condition of the floating roof’s overall translational movement of 0.1 m was simulated.The results show that the small translational movement of the floating roof will affect the stress of the drainage system,causing the stress of the drainage hose to increase.

关 键 词：储罐 浮顶排水 挠性接头 浮盘 应力分析 

分 类 号：TQ053.2[化学工程] TQ050.2