Variable Stiffness Spring Reciprocating Pump Poppet Valves and Their Dynamic Characteristic Simulation

被引：5

作者：

Zhu G. ^{[1
]}

Dong S. ^{[1
]}

Zhang W. ^{[1
]}

Zhang J. ^{[1
]}

Zhang C. ^{[1
]}

机构：

[1] School of Mechanical Engineering, Yanshan University, Qinhuangdao

来源：

Zhongguo Jixie Gongcheng/China Mechanical Engineering | 2018年 / 29卷 / 24期

基金：

中国国家自然科学基金;

关键词：

Dynamic characteristics; Numerical simulation; Poppet valve; Reciprocating pump; Variable stiffness spring;

D O I：

10.3969/j.issn.1004-132X.2018.24.003

中图分类号：

学科分类号：

摘要：

A variable stiffness spring reciprocating pump automatic poppet valve was designed herein. Furthermore spring stiffness was a function of valve disc lifts. On the basis of differential equation of the pump valve motion by Adolph, considering the influences of fluid compressibility on continuous flow condition in pump cylinders, the differential equation of the valve disc motion was established under the conditions of spring variable stiffness. Taking an example of spring stiffness as a linear function of lifts, dynamic characteristics of the valve discs of variable stiffness spring reciprocating pumps were analyzed. Simulation results show: the changes of spring stiffness have a significant influence on the dynamic characteristics of the valve discs; compared with the dynamic characteristics of the constant stiffness spring valve discs, impact velocities and lag heights of the valve discs with variable stiffness spring are decreased under the conditions of maximum lift determination. It is beneficial to improve the volumetric efficiency of reciprocating pump and improve the fatigue lifes of valve discs and valve seats. © 2018, China Mechanical Engineering Magazine Office. All right reserved.

引用

页码：2912 / 2916

页数：4

共 12 条

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