本文利用空间轴对称有限元理论,分析了油隔离泥浆泵隔离罐的强度问题。根据电子计算机计算的结果,分析了罐体的应力分布规律和第四强度理论的相当应力的分布规律。并分别研究了改变罐的厚度,改变罐的支承位置和容积不变改变罐的内径和高度等三种情况对罐体强度的影响,从而得到一些有益的结论。对提高产品的质量,降低成本,创优质产品有一定的积极作用。另外对研究轴对称压力容器的强度问题有一定的参考价值。 In this paper, the spatial axisymmetric finite element method is used to analyze the strength of oil isolation mud pump isolation tank. According to the result calculated by the computer, the stress distribution of the tank and the distribution of the equivalent stress of the fourth strength theory are analyzed. The effects of changing the thickness of the tank, changing the support position and volume of the tank, changing the inner diameter and height of the tank, and so on, on the tank strength were studied respectively. Some useful conclusions were obtained. To improve product quality, reduce costs, create quality products have a certain positive effect. In addition, there is some reference value for studying the strength of axisymmetric pressure vessel.