【摘要】：往復泵排出壓力大、效率高,是最常見的類型泵之一。往復泵技術(shù)現(xiàn)已比較成熟,而且衍生出很多不同結(jié)構(gòu)、不同種類的泵產(chǎn)品,其中包括曲柄連桿機構(gòu)往復泵、凸輪機構(gòu)往復泵及液壓往復泵等。但是,這些傳統(tǒng)結(jié)構(gòu)的往復泵普遍存在一些缺點,如結(jié)構(gòu)復雜、整體工作效率低、中間傳動環(huán)節(jié)多、排量壓力波動大、維修不方便,且難以實現(xiàn)大排量、低沖次、長沖程。直線電機是一種可以直接將電能轉(zhuǎn)換為直線運動機械能的裝置。隨著科學技術(shù)的進步,直線電機驅(qū)動技術(shù)飛速發(fā)展,因其具有結(jié)構(gòu)簡單、高速、精準、低噪、低成本等優(yōu)勢而被廣泛應(yīng)用。往復泵采用直線電機作為動力端可省掉中間傳動機構(gòu),簡化泵的結(jié)構(gòu),提高其工作可靠性和系統(tǒng)效率,還可以通過改變活塞的運動規(guī)律來調(diào)節(jié)泵的流量,同時便于實現(xiàn)自動化控制。本課題提出了雙動子直線振蕩電動機驅(qū)動雙缸往復泵的方案,并對這種新型雙缸直線電機往復泵的動態(tài)特性進行了研究。主要開展工作如下：1.在查閱了大量國內(nèi)外文獻的基礎(chǔ)上,概述了往復泵的發(fā)展研究現(xiàn)狀和直線電機的發(fā)展及應(yīng)用現(xiàn)狀,重點簡述了直線電機往復泵的研究現(xiàn)狀；2.簡述了直線電機的基本結(jié)構(gòu)及工作原理,重點介紹雙動子直線振蕩電動機的結(jié)構(gòu)及工作原理,分析了該電動機的特點及永磁體材料的選擇；3.利用等效磁路法分析了雙動子直線振蕩電動機的電路和磁路,建立了相應(yīng)的電磁數(shù)學模型,分析了電動機的振動特性,推導出電動機的軸功率及效率計算公式；4.分析了雙缸直線式往復泵的結(jié)構(gòu)和工作理論,研究了往復泵活塞組件和泵閥的運動規(guī)律；5.在理論研究的基礎(chǔ)上,建立了雙缸直線電機往復泵的電磁系統(tǒng)、水力系統(tǒng)及動力學系統(tǒng)模型,采用四階龍格-庫塔法在Matlab中進行數(shù)值求解,研究分析了該往復泵的動態(tài)特性；6.利用UVIEsim工程系統(tǒng)仿真軟件對雙缸直線式往復泵進行建模仿真,分析了電機驅(qū)動力頻率對泵特性的影響,觀察研究泵的流量,壓力特性,證明了該直線電機往復泵的可行性,為該類型泵的設(shè)計、研發(fā)及優(yōu)化提供了理論基礎(chǔ)。
[Abstract]:Reciprocating pump is one of the most common pumps with high discharge pressure and high efficiency. The reciprocating pump technology is mature now, and many kinds of pump products are derived from different structures, including crank and connecting rod mechanism reciprocating pump, cam mechanism reciprocating pump and hydraulic reciprocating pump, etc. However, these traditional reciprocating pumps generally have some shortcomings, such as complex structure, low overall working efficiency, many intermediate transmission links, large displacement pressure fluctuation, inconvenient maintenance, and difficult to realize large displacement, low impulse, long stroke. Linear motor is a kind of device which can directly convert electrical energy into linear motion mechanical energy. With the development of science and technology, linear motor drive technology has been widely used because of its simple structure, high speed, precision, low noise and low cost. The reciprocating pump adopts linear motor as the power end to save the intermediate transmission mechanism, simplify the structure of the pump, improve its working reliability and system efficiency, and can adjust the flow rate of the pump by changing the motion law of the piston. At the same time, it is convenient to realize automatic control. In this paper, a scheme of double-cylinder reciprocating pump driven by double-cylinder linear oscillating motor is proposed, and the dynamic characteristics of this new type of double-cylinder linear motor reciprocating pump are studied. The main work is as follows: 1. On the basis of consulting a large number of literatures at home and abroad, this paper summarizes the research status quo of reciprocating pump and the development and application of linear motor, with emphasis on the research status quo of linear motor reciprocating pump. The basic structure and working principle of linear motor are briefly introduced. The structure and working principle of double action linear oscillating motor are introduced emphatically. The characteristics of the motor and the selection of permanent magnet material are analyzed. The equivalent magnetic circuit method is used to analyze the circuit and magnetic circuit of the double-action linear oscillating motor, the corresponding electromagnetic mathematical model is established, the vibration characteristic of the motor is analyzed, and the formula for calculating the axis power and efficiency of the motor is deduced. The structure and working theory of double cylinder linear reciprocating pump are analyzed, and the motion law of piston assembly and valve of reciprocating pump is studied. On the basis of theoretical research, the electromagnetic system, hydraulic system and dynamic system model of reciprocating pump with double cylinder linear motor are established. The fourth order Runge-Kutta method is used to numerically solve the problem in Matlab, and the dynamic characteristics of the reciprocating pump are studied and analyzed. Using the software of UVIEsim engineering system simulation, the double cylinder linear reciprocating pump is modeled and simulated. The influence of motor driving frequency on pump characteristics is analyzed, the flow and pressure characteristics of pump are observed and studied, and the feasibility of the linear motor reciprocating pump is proved. It provides a theoretical basis for the design, development and optimization of this type of pump.
【學位授予單位】：中南林業(yè)科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TM359.4

【引證文獻】

相關(guān)會議論文 前1條

1 郭亮;盧琴芬;葉云岳;;圓筒式直線振蕩發(fā)電機的性能分析和設(shè)計[A];2006年全國直線電機學術(shù)年會論文集[C];2006年

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本文編號：2122344