内曲线转子驱动径向柱塞数字泵柱塞组件运动学及动力学特性分析

Analysis of the Kinematics and Dynamics of the Piston Assembly of the Radial Piston Digital Pump Driven by the Inner Curve Rotor

在液压变速恒频风力发电机组中,为了满足风力发电所特有的随机发生和低速大排量工况的需求,以保证可靠高效地吸收风能并将其转换为稳定的流量输出,提出一种内曲线转子驱动径向柱塞数字泵。转子上的内曲线及回程机构曲线导轨驱动柱塞滚柱组件执行往复运动,对转子内曲线与回程曲线设计,进行柱塞组件运动学及动力学仿真分析,分析不同滚柱直径的运动学特性,确定了合适的滚珠直径。仿真结果表明:内曲线转子驱动径向柱塞数字泵在风力低速驱动条件下,具有良好的运动学和动力学稳定性,能够适应风力低速驱动工况。

In the hydraulic variable speed constant frequency wind turbine,in order to meet the demand of wind power generation under the special random occurrence and low speed and large displacement conditions,to ensure the reliable and efficient absorption of wind energy and to convert it into a stable flow output,an inner curve rotor driven radial piston digital pump is proposed,and the inner curve on the rotor and the curve guide on the return mechanism drive the plunger roller assembly to and fro Motion,design the internal curve and return curve of the rotor,carry out the kinematic and dynamic simulation analysis of the plunger assembly,analyze the kinematic characteristics of different roller diameters,and determine the appropriate ball diameter.The simulation results show that the internal curve rotor driven radial piston digital pump has good kinematic and dynamic stability and can adapt to the wind under the condition of low-speed driving of the wind Low speed driving condition.