Abstract: In order to improve the operating life of prick valve of high reciprocating pump, the design method for the valve is studied by combining FEM and structural optimization. The method for element mesh, load calculation, boundary condition determination are presented. A model is established in which the maximum stress on the prick surface of the valve is used as an objective function and the restrain conditions are fixed by considering of the strength and dimension of the valve. A calculation example shows that, the maximum stress at the prick surface of the valve and the valve seat is effectively decreased.

Key words: reciprocating pump, valve, structure, finite element, analysis, optimization design

摘要： 以提高高压往复泵锥形阀的使用寿命为目的,研究了有限元法与最优化方法相结合的泵阀结构设计方法.文中给出 了阀体和阀座的单元划分、载荷处理以及边界条件的确定方法.以阀体锥面上的最大综合应力为目标函数,以强度约束和 尺寸约束为约束条件,建立了泵阀结构优化设计的数学模型,给出了求解方法.计算实例表明,通过优化设计可以有效降 低阀体和阀座锥面上的最大应力.

关键词: 往复泵, 阀, 结构, 有限元, 分析, 优化设计