超高频气动电磁阀气-电-热复杂耦合特性研究

项目名称： 超高频气动电磁阀气-电-热复杂耦合特性研究

项目编号： No.50805128

项目类型： 青年科学基金项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 刘昊

作者单位： 浙江大学

项目金额： 22万元

中文摘要： 本课题研究超高频气动电磁阀在高频开关的工作状态下，电磁场、气体流场、以及温度场之间的耦合关系并作用到电磁阀机械本体，对阀的性能的影响，对阀的动态特性进行分析研究，提出高频气动电磁阀的新的设计方法和结构。课题的主要研究内容及成果有： 1、对高频气动电磁阀的磁场、流场和温度场进行了深入的分析和研究，建立了准确的电磁场模型和工作动态过程电磁力-气动力耦合计算模型，获得了相关参数对于高频气动电磁阀动态性能的影响规律。 2）提出了新型的ε30005;磁铁结构高频气动电磁阀，联合运用maxwell磁场仿真软件和CFX流场仿真软件，对不同安匝数下动态工作过程中阀腔空间的电磁场、气体流场和温度场之间的耦合特性进行了联合仿真研究，获得了相关关键参数对于阀芯受力及高频工作下流量特性的关系。 3）提出了具有新结构的超磁致伸缩高频气动电磁阀，掌握了相关关键技术要点。 4）建立了基于通过对阀控腔压力信号推算阀芯实际位移状态的完整数学模型，由此研制了高频电磁阀动态特性测试系统。 经实验验证样机性能指标已达到国际现有同类产品相当水平,但与课题原设计目标仍有一定差距，仍需进一步深入研究解决其中存在的问题。

中文关键词： 超高频气动电磁阀；电磁场；流场；温度场；动态特性

英文摘要： The research project is focused on the coupling relationship of the electromagnetic field, the gas flow field and the temperature field of the high-frequency pneumatic solenoid valve in the high frequency switching operation status, and how they effect on the mechanical body of the valve and the dynamic characteristics of it. Based on the research results, new design methods and new structures of the valve have been proposed. The main research topics and results are: 1. Based on the in-depth analysis and research of the magnetic field, flow and temperature fields of the pneumatic high-frequency solenoid valves, the model of the electromagnetic field and the coupling calculation model of the electromagnetic force and the aerodynamic force in the work dynamic process have been established accurately. And the law of the parameters that effect the dynamic performance of the high-frequency pneumatic solenoid valve have also been obtained. 2. A new structure of high-frequency εneumatic solenoid valve is proposed. Based on joint simulation of the electromagnetic field, the gas flow and temperature fields in the valve chamber , under different strength of the magnetic field excitation, the laws of the relevant key parameters effect on the spool workforce and the flow characteristics under high-frequency operation status have been obtained. 3.A new structure for magnetostrictive high frequency pneumatic solenoid valve is proposed and its key technology-related points have been grasped. 4.The complete mathematical model of calculating the actual displacement of the valve spool with the data of pressure in the valve controlled chamber has been built up. Based on it, a high-frequency electromagnetic valve dynamic testing system is developed. It is verified that performances of the prototype of the high-frequency pneumatic solenoid valve is on the same level of the international similar products by the experiments. However, there still is a certain gap between the results and the original design goals, which need further study to solve more problems.

英文关键词： High-frequency pneumatic solenoid valve; electromagnetic field; flow field; temperature field; dynamic characteristics