多作用內(nèi)曲線徑向柱塞泵定子曲線幅角分配的研究
發(fā)布時間：2018-11-19 22:00
【摘要】：多作用內(nèi)曲線徑向柱塞泵具有低轉(zhuǎn)速、大排量的特點(diǎn),在風(fēng)電領(lǐng)域和變頻等領(lǐng)域的應(yīng)用前景非常好。本文以應(yīng)用廣泛的等加速定子曲線為研究對象,主要圍繞幅角變化對定子曲線性能的影響、定子曲線幅角分配設(shè)計方法、幅角分配對流量脈動的影響等問題展開分析和研究,為開發(fā)設(shè)計多作用內(nèi)曲線徑向柱塞泵提供理論支撐。首先,介紹了液壓技術(shù)在風(fēng)電領(lǐng)域和變頻領(lǐng)域的應(yīng)用優(yōu)勢,指出了低速大排量液壓泵是將該優(yōu)勢化為直接生產(chǎn)力的紐帶,并提出采用多作用內(nèi)曲線定子導(dǎo)軌結(jié)構(gòu)實(shí)現(xiàn)液壓泵的低速大排量化,接著概述了徑向柱塞泵的國內(nèi)外研究現(xiàn)狀及本文的主要研究內(nèi)容。其次,根據(jù)多作用內(nèi)曲線徑向柱塞泵的工作原理,推導(dǎo)了定子內(nèi)曲線方程和等加速定子曲線方程,并分析了柱塞滾子組件的動力學(xué),發(fā)現(xiàn)各區(qū)段的幅角分配是影響等加速定子曲線性能的關(guān)鍵因素。另外,以多作用內(nèi)曲線徑向柱塞泵的排油區(qū)為例,分別研究了僅變化等加速區(qū)幅角、僅變化等速區(qū)幅角、僅變化等減速區(qū)幅角、多區(qū)間幅角同時變化四種幅角變化方案對等加速定子曲線性能的影響,詳盡地揭示了度加速度、度速度、壓力角、定子導(dǎo)軌曲率半徑、接觸應(yīng)力在幅角發(fā)生變化后的變化規(guī)律。再次,針對多作用內(nèi)曲線徑向柱塞泵可能工作在閉式液壓回路或開式液壓回路,提出了兩種不同的方法設(shè)計等加速定子曲線的幅角分配——對稱設(shè)計法和非對稱設(shè)計法。根據(jù)給定的結(jié)構(gòu)參數(shù),詳細(xì)地介紹了這兩種設(shè)計方法的設(shè)計過程及注意事項(xiàng),并比較了這兩種方法設(shè)計的定子曲線性能。最后,介紹了一種簡單易行的研究多作用內(nèi)曲線徑向柱塞泵流量脈動的方法。利用該方法計算了多作用內(nèi)曲線徑向柱塞泵分別工作在閉式液壓回路和開式液壓回路的瞬時流量及其脈動率,且對其進(jìn)行了比較分析。
[Abstract]:Multi-acting internal curve radial piston pump has the characteristics of low speed and large displacement, and has a good application prospect in wind power field and frequency conversion field. In this paper, the widely used equal-acceleration stator curve is taken as the research object. The influence of amplitude angle variation on the performance of stator curve, the design method of stator curve amplitude angle distribution, and the influence of amplitude angle distribution on flow pulsation are analyzed and studied. It provides theoretical support for the development and design of multi-action internal curve radial piston pump. Firstly, the application advantages of hydraulic technology in wind power field and frequency conversion field are introduced, and it is pointed out that low speed and large displacement hydraulic pump is the link to turn this advantage into direct productivity. The multi-action inner curve stator guideway structure is used to realize the low speed and large displacement of hydraulic pump. Then the research status of radial piston pump at home and abroad and the main research contents of this paper are summarized. Secondly, according to the working principle of multi-action internal curve radial piston pump, the stator inner curve equation and equal acceleration stator curve equation are derived, and the dynamics of plunger roller assembly are analyzed. It is found that the distribution of amplitude angle of each section is the key factor affecting the performance of equal acceleration stator curve. In addition, taking the discharge area of radial piston pump with multi-action curve as an example, the amplitude angle of constant acceleration zone and equal deceleration zone are studied respectively. The effects of four amplitude-angle variation schemes on the performance of stator curve with equal acceleration are revealed in detail. The variation law of degree acceleration, degree velocity, pressure angle, curvature radius of stator guideway and contact stress after amplitude angle change is revealed in detail. Thirdly, in view of the fact that the radial piston pump with multiple internal curves may work in the closed hydraulic circuit or the open hydraulic circuit, two different methods are proposed to design the amplitude and angle distribution of the constant acceleration stator curve, namely, the symmetrical design method and the asymmetric design method. According to the given structural parameters, this paper introduces the design process and points for attention of the two design methods in detail, and compares the performance of the stator curves designed by the two methods. Finally, a simple and easy method to study the flow pulsation of multi-action internal curve radial piston pump is introduced. Using this method, the instantaneous flow rate and pulsation rate of radial piston pump operating in closed hydraulic circuit and open hydraulic circuit are calculated and compared.
【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】：TH137.51
[Abstract]:Multi-acting internal curve radial piston pump has the characteristics of low speed and large displacement, and has a good application prospect in wind power field and frequency conversion field. In this paper, the widely used equal-acceleration stator curve is taken as the research object. The influence of amplitude angle variation on the performance of stator curve, the design method of stator curve amplitude angle distribution, and the influence of amplitude angle distribution on flow pulsation are analyzed and studied. It provides theoretical support for the development and design of multi-action internal curve radial piston pump. Firstly, the application advantages of hydraulic technology in wind power field and frequency conversion field are introduced, and it is pointed out that low speed and large displacement hydraulic pump is the link to turn this advantage into direct productivity. The multi-action inner curve stator guideway structure is used to realize the low speed and large displacement of hydraulic pump. Then the research status of radial piston pump at home and abroad and the main research contents of this paper are summarized. Secondly, according to the working principle of multi-action internal curve radial piston pump, the stator inner curve equation and equal acceleration stator curve equation are derived, and the dynamics of plunger roller assembly are analyzed. It is found that the distribution of amplitude angle of each section is the key factor affecting the performance of equal acceleration stator curve. In addition, taking the discharge area of radial piston pump with multi-action curve as an example, the amplitude angle of constant acceleration zone and equal deceleration zone are studied respectively. The effects of four amplitude-angle variation schemes on the performance of stator curve with equal acceleration are revealed in detail. The variation law of degree acceleration, degree velocity, pressure angle, curvature radius of stator guideway and contact stress after amplitude angle change is revealed in detail. Thirdly, in view of the fact that the radial piston pump with multiple internal curves may work in the closed hydraulic circuit or the open hydraulic circuit, two different methods are proposed to design the amplitude and angle distribution of the constant acceleration stator curve, namely, the symmetrical design method and the asymmetric design method. According to the given structural parameters, this paper introduces the design process and points for attention of the two design methods in detail, and compares the performance of the stator curves designed by the two methods. Finally, a simple and easy method to study the flow pulsation of multi-action internal curve radial piston pump is introduced. Using this method, the instantaneous flow rate and pulsation rate of radial piston pump operating in closed hydraulic circuit and open hydraulic circuit are calculated and compared.
【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】：TH137.51
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 楊國來;黃昭雪;李熙彬;趙君;;幅角分配對大排量徑向柱塞泵性能的影響[J];液壓與氣動;2016年06期
2 朱成黨;涂樂;林勇剛;劉宏偉;李偉;;風(fēng)電機(jī)組的機(jī)械液壓混合傳動技術(shù)[J];浙江大學(xué)學(xué)報(工學(xué)版);2014年10期
3 侯U喨，
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