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- 2016
多路换向阀换向耦合阀口节流结构拓扑设计
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Abstract:
为解决多路换向阀换向过渡过程中分流特性所带来的阀口间节流结构耦合作用问题,提出多路换向阀换向耦合阀口节流结构拓扑设计方法。将耦合阀口节流槽结构分类为由U型槽、半圆槽、圆孔槽等结构组成的参数化组合构成,构建出多路换向阀工作口流量与其阀口节流槽结构变量间的函数模型;在验证多路换向阀三维流体解析与其动态特性台架实验结果的基础上,以设定的多路换向阀换向过渡过程工作口流量变化为评价目标,采用粒子群算法求解阀口节流槽结构拓扑设计问题,实现了耦合阀口节流结构响应与换向过渡过程节流特性的较好吻合。研究结果表明,该方法对满足多路换向阀换向过渡特性要求的耦合阀口节流结构拓扑设计具有实际意义。
A topology design method for coupling valve ports throttling structure of multi？？way directional valves is proposed to solve the coupling problem between the valve ports caused by flow distribution characteristic in the process of reversing transition. The throttling structures of coupling valve ports are classified into semicircle groove, U？？shaped groove, round hole groove and so on, and formed by different parameterized combinations of these structures. A model to describe the function between work flow of multi？？way directional valve and variables of its coupling valve ports throttling groove structure is constructed. The work flow in the process of reversing transition of multiple directional control valve is set as an evaluation target based on the validation of three？？dimensional fluid dynamic analysis of multi？？way directional valve and its dynamic characteristics results of test bench. Then a particle swarm algorithm is used to solve the topology design problem of valve ports throttling groove structure, so that a good agreement between the response of coupling valve throttling structure and the throttling characteristic in the process of reversing transition is realized. The results show that the method has a reference value of engineering for the topology design of coupling valve ports throttling structure in meeting the requirements of reversing transition characteristics of multi？？way directional valves
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