O形圈三角形密封槽设计改进

Design Improvement of O-ring Corner Seal Groove

介绍了O形圈角密封槽的结构特点及压缩量的计算方法。针对某角密封槽设计泄漏故障,利用有限元分析软件Ansys分析O形圈不同受力下的接触应力。通过分析发现泄漏的原因为:三角形密封槽结构O形圈受介质力后,轴向接触应力明显减小。根据分析结果制定改进方案,通过改变三角形密封槽的角度以减小介质力对接触应力的影响,解决泄漏问题,为三角型密封槽的设计改进提供依据。

The paper introduces the structural characteristics of O-ring corner sealing groove and the calculation method of its compression amount.For the leakage fault of a corner sealing groove,the finite element analysis software ANSYS is used to analyze the contact stress of the O-ring under different stress.Through analysis,it is found that the cause of leakage is as follows:the axial contact stress of O-ring corner sealing groove structure decreases obviously after receiving medium force.An improvement scheme is developed based on the analysis results.By changing the angle of the corner sealing groove,the influence of medium force on contact stress is reduced to solve the leakage problem,which provides a basis for the design improvement of the corner sealing groove.