隔膜泵大直径橡胶隔膜变形及应力数值分析

Deformation and Stress Numerical Analysis for Large Rubber Diaphragm of Diaphragm Pump

橡胶隔膜是大型隔膜泵设备的核心零件,了解和掌握大直径隔膜在工作过程中的变形状态和应力状态,不仅能实现隔膜结构优化,提高隔膜使用寿命,也可为隔膜泵容积效率和隔膜利用率指标的综合设计提供有用数据。由于隔膜工况复杂,采用测试方法获得隔膜工作中的变形和应力状态较为困难,成本高,本文利用数值方法对隔膜泵工作过程中大直径隔膜的运动过程进行模拟,较为准确的获得了隔膜的变形和应力结果,为隔膜泵隔膜结构设计和选型提供理论数据。

Diaphragm is one of the key components of diaphragm pump, understanding the deformation state and stress state of the diaphragm is useful for the structural optimum design of diaphragm, increases the life of diaphragm, provides important information and data for volumetric efficiency and diaphragm utilization design. Due to the complicated working conditions of the diaphragm, it is difficult and high cost to obtain useful data of deformation and stress of diaphragm from experiment study. In this paper, the numerical method is used to simulate the movement process of the large diameter diaphragm during the operation of the diaphragm pump. The deformation and stress results of the diaphragm are obtained accurately,which provides theoretical data for the diaphragm pump diaphragm structure design and selection.