球閥式高速開關(guān)閥用電磁鐵設(shè)計(jì)
[Abstract]:High-speed switch valve has the advantages of simple structure, reliable operation, strong anti-pollution ability and low cost. As the electro-mechanical conversion element of high-speed switching valve, the performance of high-speed switched electromagnet directly affects the working characteristics of high-speed switch valve. However, due to the immaturity of the design theory, the design method, the production process and the shortage of the material characteristics, the solenoid applied in the domestic high frequency response and large flow rate high speed switch valve can not fully meet the requirements of application. In this paper, the solenoid used in ball type high speed switch valve is taken as the design object, the basic theory, structure parameters, simulation mathematical model, driving circuit are analyzed, and the dynamic characteristics of the electromagnet for high speed switch valve are studied. According to the design frequency of 100Hz and the flow rate of 10L/min, the valve core of the ball valve type high speed switch valve is analyzed, the electromagnetic force is calculated, the structure parameters of the high speed switch valve are budgeted, and the structural parameters are modified by simulation. The electromagnet for high-speed switch valve is obtained to meet the better dynamic characteristics. The contents of each chapter are as follows: in Chapter 1, the electromagnet for high speed switch valve is summarized, the research progress at home and abroad for high speed switch valve is described, and the main contents and significance of this study are summarized. Chapter 2, based on the theory of electromagnet, introduces the structure and working principle of typical high speed switched electromagnet and high speed switch valve, analyzes the theory of magnetic circuit and electromagnetic field, and establishes the dynamic mathematical model of high speed switched electromagnet. The dynamic characteristics and its influencing factors are analyzed. In chapter 3, the parameters of solenoid used in ball-type high-speed switch valve are designed. This paper introduces and classifies ferromagnetic materials, and selects ferromagnetic material electrician pure iron according to the material requirement of electromagnet for high speed switch valve, analyzes the force situation of ball valve high speed switch valve core, and calculates the required electromagnetic force by force analysis. In the case of travel determination, the parameters of the electromagnet are preliminarily determined. In chapter 4, the electromagnet is modeled and simulated in Ansoft Maxwell software. In order to reduce the response time, the parameters of the electromagnet model are modified. The two parameters of coil turns and excitation voltage are corrected without changing the mechanical parameters of electromagnet. The results show that the response time of electromagnet can be greatly shortened by modifying the above two parameters. The dynamic characteristics of high-speed switch valve electromagnet are improved. In chapter 5, the driving circuit of electromagnet for high speed switch valve is designed, and the main components of driving circuit are introduced. Finally, the main research contents and research results are summarized, and further research directions for this subject are prospected.
【學(xué)位授予單位】:蘭州理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TM574
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