双排油口轴向柱塞泵配流特性建模及数字仿真研究

发布时间：2018-03-19 01:22

本文选题：轴向柱塞泵　切入点：配流盘　出处：《太原理工大学》2012年硕士论文　论文类型：学位论文

【摘要】：轴向柱塞泵具有高压力、大流量、高效率、结构紧凑、寿命长等优点,因此得到广泛的应用,特别是工程机械行业,对高性能、低噪声、长寿命的柱塞泵和马达有着极大的需求。近年来随着人们环保意识越来越强以及用户对主机质量要求的提高,对轴向柱塞泵的性能要求也越来越高。在高压高速的工况下,轴向柱塞泵的振动和噪声问题比较突出,因此研究如何减小轴向柱塞泵的振动和降低其噪声就很有必要。轴向柱塞泵噪声产生的原因很多,主要是流体噪声和机械噪声,而由于流量脉动、压力冲击等产生的流体噪声是轴向柱塞泵的主要噪声源。论文主要通过理论分析、仿真计算,对轴向柱塞泵产生的流体噪声进行分析,探索减小脉动和降低噪声的结构和方法。论文运用多学科综合仿真软件SimulationX,对9柱塞两配流窗口轴向柱塞泵进行了仿真研究,确定了合理的配流盘的结构。在此基础上分析了柱塞数目分别为10和11时,柱塞腔内的压力和泵出口的压力流量脉动,对排量相同而柱塞数目不同时泵的压力流量进行了比较。并且以现有的轴向柱塞泵为基础,对其配流盘的结构进行合理的改造,提出了两种新型双排油口泵的配流原理：串联型双排油口轴向柱塞泵(三个配流窗口)和并联型双排油口轴向柱塞泵(三个配流窗口和四个配流窗口两种类型),使泵的功能增加。在仿真软件SimulationX中对串联型双排油口轴向柱塞泵和并联型双排油口轴向柱塞泵进行了建模和仿真分析,确定了合理的配流结构,使得新型泵的压力流量脉动水平与现有泵相当。通过建模仿真,分析不同柱塞数目对串联型双排油口轴向柱塞泵出口的压力流量脉动的影响,得出其变化规律与两配流口泵一致。并且对串联型三配流窗口轴向柱塞泵和并联型三配流窗口轴向柱塞泵出口的压力流量和柱塞腔内的压力流量冲击经行了比较。分析两种新型泵的应用范围,得出并联型三配流窗口轴向柱塞泵的应用范围要广于串联型三配流窗口轴向柱塞泵的应用范围。
[Abstract]:Axial piston pump has the advantages of high pressure, large flow rate, high efficiency, compact structure and long life, so it has been widely used, especially in the construction machinery industry, for high performance, low noise, There is a great demand for long life piston pump and motor. In recent years, with the increasing awareness of environmental protection and the improvement of the quality requirements of the main engine, the performance requirements of axial piston pump are becoming more and more high. The vibration and noise of axial piston pump are very serious, so it is necessary to study how to reduce the vibration and noise of axial piston pump. There are many reasons for axial piston pump noise, mainly fluid noise and mechanical noise, while fluid noise caused by flow pulsation and pressure impact is the main noise source of axial piston pump. The fluid noise produced by axial piston pump is analyzed by simulation, and the structure and method of reducing pulsation and noise are explored. In this paper, the axial piston pump with two flow distribution windows of 9 plunger is simulated with the simulation software of simulation X, and the reasonable structure of the distribution disk is determined. On the basis of this, the number of plungers is 10 and 11:00, respectively. The pressure and flow pulsation in the plunger chamber are compared with those in the pump with the same displacement and different number of plunger at the same time. And on the basis of the existing axial piston pump, the structure of the flow distribution disk is reformed reasonably. In this paper, the principle of flow distribution of two new types of double outlet pump is presented: series type axial piston pump with double outlet (three distribution windows) and parallel type axial piston pump with double outlet (three flow distribution windows and four flow distribution windows). The function of the pump is increased. In the simulation software SimulationX, the model and simulation analysis of the series type axial piston pump with double outlet and the parallel type of double outlet axial piston pump are carried out. The reasonable flow distribution structure is determined so that the pressure and flow pulsation level of the new pump is equivalent to that of the existing pump. Through modeling and simulation, the influence of different plunger numbers on the pressure and flow pulsation at the outlet of the axial piston pump with two oil outlets in series is analyzed. It is found that the variation law is the same as that of the two distribution port pumps. The pressure flow rate at the outlet of the axial piston pump with three distribution windows and the pressure flow impact in the plunger cavity are compared between the axial piston pump with three distribution windows in series and the axial piston pump with parallel flow distribution window. To analyze the application range of two new types of pumps, It is concluded that the application range of parallel axial piston pump with three distribution windows is wider than that of series three distribution window axial piston pump.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH322

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