原油储罐应力及风险分析

The Analysis of Stress and Risk Assessment of Crude Oil tank

针对某油库6#储罐,采用ANSYS建立有限元模型,对其罐壁板单元进行网格划分,对比分析了满载时罐体未变形及变形两种情况的应力分布,通过变形罐体的应力云图可以看出该储罐罐体已经产生变形,且局部变形比较严重。变形前后应力数据显示罐体多处已经处在材料屈服极限范围内,甚至接近于屈服极限上限290 MPa,具有一定危险。提出应及时检测其它储罐,并采取相应措施防止罐体出现较大变形。

Aiming at a depot 6 # tanks, using ANSYS finite element model, meshing their tank wall unil, comparative analysis of the deformation and stress distribution of the tank is not deformed in both cases at full load, by deforming the tank the stress cloud can be seen in the tank body has been deformed, and the local deformation is more serious. Deformation stress before and after data showed the tank is ah＇eadv in material yield many within limits, even close to the upper limit of the yieht limit 290Mpa, has a certain risk. Therefore, it is timely detection of other tanks and take appropriate measures to prevent the emergence of large deformation of the tank, so as not to affect the safe operation of the tank.