工作参数对变量柱塞泵流量脉动的影响

发布时间：2018-02-28 05:44

本文关键词： 柱塞泵变量机构工作参数流量脉动　出处：《兰州理工大学学报》2016年05期 　论文类型：期刊论文

【摘要】：为揭示出口压力、斜盘倾角和转速等工作参数改变时变量柱塞泵流量脉动的变化特点,以某恒功率变量柱塞泵为具体对象,建立了变量机构的机液联合仿真模型,界定出柱塞泵工作参数范围.采用空间球面法计算配流盘的过流面积,并考虑油液压缩性及运动副配合间隙的泄漏,在此基础上应用AMESim软件对柱塞泵泵体部分进行了建模.结果表明:工作压力增大时,柱塞泵出口流量脉动幅值及脉动率均增大,流量倒灌量增大;斜盘倾角增大时,流量脉动幅值增大,脉动率先减小后基本不变,流量倒灌量增大但增幅微小;随着转速的增大,流量脉动幅值增大,脉动率减小且低转速下变化梯度较大,流量倒灌量逐渐减小.
[Abstract]:In order to reveal the characteristics of flow pulsation of variable piston pump when the working parameters such as outlet pressure, tilting angle and rotating speed are changed, taking a constant power variable piston pump as a concrete object, a combined simulation model of variable mechanism is established. The working parameters of piston pump are defined. The space spherical method is used to calculate the flow area of the distribution disk, and the leakage of the oil compressibility and the matching clearance of the moving pair is considered. On this basis, the AMESim software is used to model the piston pump body. The results show that when the working pressure increases, the flow pulsation amplitude and pulsation rate of the piston pump outlet increase, the flow rate increases, and the tilting angle increases. The amplitude of flow pulsation increases, the pulsation decreases at first, the flow rate increases but the increase is small; with the increase of rotational speed, the amplitude of flow pulsation increases, the pulsation rate decreases and the gradient of change is larger at low rotational speed. The flow rate decreased gradually.
【作者单位】：兰州理工大学能源与动力工程学院;
【基金】：国家自然科学基金(51365028)
【分类号】：TH137.51

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