并联轴向柱塞泵过渡区域脉动特性分析（英文）

发布时间：2018-01-25 01:21

本文关键词： 轴向柱塞泵配流盘过渡区域脉动　出处：《机床与液压》2017年12期 　论文类型：期刊论文

【摘要】：并联轴向柱塞泵具有结构简单、能效高的特点,但柱塞泵内部结构配流盘排油单边腰型槽拥有双配流窗口,柱塞在经过配流窗口进行吸排油转换时,柱塞腔内闭死容积及通流面积的变化会产生较大的压力冲击和噪声,影响并联轴向柱塞泵的使用寿命和系统的稳定性。针对该问题,理论分析了柱塞泵运动学关系、配流盘配流面积等,利用多学科软件AMESIM建立了单柱塞模型,在此基础上构建整泵仿真模型。通过对单柱塞模型偏转角度和阻尼槽深度角进行分析,优化过渡区域几何关系,得到偏转角为7°,阻尼槽深为6°,该配流结构最为合理。进一步搭建试验台,对整泵的压力脉动进行试验验证,验证了模型的准确性,并得到随着负载压力的增大,输出压力脉动变大。
[Abstract]:The parallel axial piston pump has the characteristics of simple structure and high energy efficiency, but the internal structure of the piston pump has a double flow window with a single side waist slot for oil discharge, and the plunger is in the process of oil absorption and discharge conversion through the flow distribution window. The change of closed dead volume and flow area in plunger cavity will produce great pressure shock and noise, which will affect the service life of parallel axial piston pump and the stability of the system. The kinematics relationship of piston pump and the flow distribution area of flow distribution disk are analyzed theoretically. A single plunger model is established by using the multidisciplinary software AMESIM. On this basis, the simulation model of whole pump is constructed. By analyzing the deflection angle of single plunger model and the depth angle of damping slot, the geometric relationship of transition region is optimized, and the deflection angle is 7 掳and the depth of damping slot is 6 掳. The distribution structure is the most reasonable. Further, the test bench is built to verify the pressure pulsation of the whole pump, and the accuracy of the model is verified, and the output pressure pulsation becomes larger with the increase of the load pressure.
【作者单位】：太原理工大学;
【基金】：supported by Theory and Method of Flow Self-balance Pump Control Differential Cylinder Electro-hydraulic Servo System (Provincial Natural Science Foundation: 2014011024-1)
【分类号】：TH137.51
【正文快照】： accepted 20 January 20171 IntroductionAxial piston pump is the most important powersource of the hydraulic system for closed-loop controldifferential cylinder.The traditional axial piston pumpwith dual-flow window cannot be used alone to providekinetic e

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