基于ANSYS的大型立式真空绝热容器外下封头加强结构设计  

Design of Strengthening Structure on Lower Closure of Large Vertical Vacuum Cryogenic Vessel by Using ANSYS

作　　者：范虹[1] 王明富[1] 张杰[1] 

机构地区：[1]北京航天发射技术研究所,北京100076

出　　处：《化工设备与管道》2011年第3期4-7,共4页Process Equipment & Piping

摘　　要：大中型立式真空低温容器外下封头与支座连接处局部受力情况复杂,该处结构强度关系设备的强度是否可靠,目前通常是参考规范并主要靠经验来确定外下封头厚度,其结果相对较保守。针对外下封头受力特点,设计了一种新型加强结构,以150 m3液氩立式低温储罐为例,通过有限元分析对比和校核,表明该结构改善受力和优化结构效果明显,结构强度满足要求;该结构能节约成本,在实际使用过程中效果良好。The stress distribution at the joint of lower closure and supports of medium and large diameter vertical vacuum cryogenic vessel is complicated. The strength of the ）oint is related to the safety of the vessel. Currently, it is general to determine the thickness of the closure by experience. The result may be conservative. With respect to the structural feature of this closure, in this article, a new reinforcing structure was designed. Exampled with 150 m3 vertical cryogenic liquid argon container, through the analysis and comparison by using finite element method, it has been shown that the stresses distribution is improved, the strength of the structure reach the requirement and the effect of structural optimization is obvious. With use of this new structure, the cost is saved and the performance of the vessel is satisfied.

关 键 词：大型立式容器 加强结构 有限元分析 

分 类 号：TQ050.2[化学工程] TH123.4[机械工程—机械设计及理论]