挥氨塔改造中薄壁椭圆封头的加强及其外压稳定性分析  

Stability Analysis of Reinforced Thin Wall Ellipsoidal Head Used in the Revamping Amonia Volatilization Tower

作　　者：田琳静[1] 杨国政[2] 魏峰[1] 高炳军[1] 

机构地区：[1]河北工业大学化工学院,天津300130 [2]北京航天万源煤化工工程有限公司,北京100036

出　　处：《压力容器》2011年第9期22-25,共4页Pressure Vessel Technology

摘　　要：为了提高薄壁椭圆封头的抗外压失稳能力,在椭圆封头外壁增设了环向及经向加强筋。利用有限元法对结构进行了特征值屈曲分析,并对加强筋的合理配置进行了探讨。参照ASMEB&PVⅧ-2(2010)对加强结构的稳定性进行评价,保证了结构安全可靠。Hoop and longitudinal reinforcements were welded on the outside of the thin wall ellipsoidal head to improve its stability under external pressure. Eigenvalue buckling analysis was done with finite element method. The arrangement of the reinforcements was optimized to achieve the best reinforcing effect. The stability of the reinforced structure was evaluated according to ASME B＆PV Ⅷ-2 （2010） and it indicates safety of the structure.

关 键 词：薄壁 椭圆封头 加强 稳定性 屈曲分析 

分 类 号：TQ113.25[化学工程—无机化工] TB115.1[理学—数学]