平衡阀在激振系统中的响应特性分析

Analysis on Response Characteristics of Counterbalanced Valve in Vibration System

针对激振系统中螺纹插装平衡阀工作频率与激振器频率不同步的问题,对激振系统中平衡阀的响应特性进行研究,建立螺纹插装平衡阀的AMESim仿真模型,得到控制口阻尼孔直径、调压弹簧刚度和阀口锥度对激振系统中平衡阀最高工作频率、阀口开度以及通流能力的影响。研究结果表明,控制口阻尼孔直径和调压弹簧刚度共同影响平衡阀的最高工作频率和阀口开度,阀口锥度影响平衡阀通流能力。阻尼孔直径与阀口开度和最高工作频率呈正相关,调压弹簧刚度与阀口开度和最高工作频率呈负相关,阀口锥度与通流能力呈负相关。激振频率达到平衡阀最高工作频率后,平衡阀会先后经历两个阶段的失效。第一阶段为正向自由流动功能有效而反向节流流动功能失效,第二阶段为正向自由流动功能与反向节流流动功能均失效。

In order to solve the problem that the working frequency of the counterbalance valve is not synchronized with the frequency of the exciter in the vibration system,the response characteristics of the counterbalance valve in the vibration system are studied.The AMESim simulation model of the counterbalance valve is established to draw the influences of orifice diameter and spring stiffness of the pressure regulating valve and the degree of the valve opening taper on the maximum operating frequency of the counterbalance valve,the opening of the valve opening and the flow-through capacity in the vibration system.The results shows the diameter of the orifice and the spring stiffness of the pressure regulating spring jointly affect the maximum operating frequency of the counterbalance valve and the opening of the valve opening.The taper of the valve opening affects the flow capacity of the counterbalance valve.The diameter of the orifice is positively correlated with the valve opening and the maximum operating frequency.The stiffness of the regulator spring is negatively correlated with the valve opening and the maximum operating frequency.The valve opening taper is inversely related to the flow capacity.When the vibration frequency reaches the maximum operating frequency of the counterbalance valve,the counterbalance valve will successively experience the failure of two phases.In the first stage,the function of forward free flow is effective and the function of reverse throttling flow is invalid.In the second stage,the functions of forward free flow and reverse throttling flow all fail.