2万m^3立式网壳顶储罐破坏分析及弱顶性能评价  

Failure Analysis and Evaluation for Weak Roof Performance of 2×104 m^3 Vertical Latticed Shell Roof Storage Tank

作　　者：刘巨保[1] 门建斌[1] 丁宇奇[1] 徐祥娜[1] 

机构地区：[1]东北石油大学 机械科学与工程学院,黑龙江大庆163318

出　　处：《石油化工设备》2013年第3期48-53,共6页Petro-Chemical Equipment

摘　　要：按照SH 3046—1992《石油化工立式圆筒形钢制焊接储罐设计规范》,建立了罐壁-锥板-蒙皮连接方式的2×104 m3大容量立式网壳顶储罐的空间有限元模型,计算得到了储罐在空罐、半罐、满罐3种工况下的应力分布状态,对储罐进行了强度、破坏和弱顶性能综合评价。根据储罐弱顶性能影响因素的分析计算,提出了使该储罐实现弱顶结构的途径是储罐边缘板厚度由10mm增大到15mm或罐顶焊角高度由4mm减小到3.50mm。In accordance with the SH 3046—1992 Petro‐Chemical Design Specification for Ver‐tical Cylindrical Steel Weld Storage Tanks ,to the tank wall‐cone‐plate‐skin connection ,estab‐lishing 2 × 10^4 m^3 vertical lattice roof storage tank spatial finite element model .The stress distri‐bution of empty tank ,half tank and full tank were calculated ,take intensity ,failure and weak roof performance for the comprehensive evaluation .Based on the analysis of influencing factors of the tank weak roof performance ,proposing two ways to achieve the structure of weak roof ：the thickness of margin plate increased from 10 mm to 15 mm ,weld bead height of tank deck decrea‐ses from 4 mm to 3 .50 mm .

关 键 词：网壳顶储罐 强度 破坏 弱顶性能 破坏分析 

分 类 号：TE972[石油与天然气工程—石油机械设备] TQ053.2[化学工程]