管道液压冲击压力振荡特性分析

发布时间：2018-04-30 00:03

本文选题：液压冲击 + 压力振荡　；参考：《机床与液压》2017年17期

【摘要】：针对液压系统中液压冲击引起管道压力振荡的问题,以两端分别连接容腔和换向阀的等直径水平管道为研究对象,通过对管道物理模型的空间离散化,考虑频率相关摩擦,建立管道有限分段集中参数模型,考虑复杂流体现象,合理选择管道子模型,采用AMESim进行了仿真分析,得到管道压力振荡特性。并通过仿真分析确定了管道参数对压力振荡的影响规律。结果表明:AMESim法计算所得峰值压力与理论计算相比误差为1.5%,与Simulink法相比误差为6.8%,且在动态过程中AMESim法和Simulink法压力曲线吻合良好,证明了建模与仿真方法的正确性,为管道液压冲击压力振荡分析提供了一种新方法。
[Abstract]:In order to solve the problem of pressure oscillation caused by hydraulic shock in hydraulic system, the equal diameter horizontal pipe with two ends connecting the cavity and the directional valve is taken as the research object. By discretization of the space of the physical model of the pipeline, the frequency related friction is considered. The finite section lumped parameter model of pipeline is established, considering the complex fluid phenomenon, the pipe sub-model is reasonably selected, and the simulation analysis is carried out by using AMESim, and the pressure oscillation characteristics of pipeline are obtained. The influence of pipeline parameters on pressure oscillation is determined by simulation analysis. The results show that the error of the peak pressure calculated by the w AMESim method is 1.5 compared with the theoretical calculation, and the error is 6.8 by comparing with the Simulink method. The pressure curves of the AMESim method and the Simulink method are in good agreement with each other in the dynamic process, which proves the correctness of the modeling and simulation methods. A new method is provided for the analysis of hydraulic shock pressure oscillation in pipeline.
【作者单位】：西南石油大学机电工程学院;中国石油长庆油田公司第五采油厂;
【分类号】：TH137

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