考虑油液特性的齿轮泵内部流场仿真分析研究

发布时间：2018-01-20 16:03

本文关键词： 齿轮泵内部流场分析油液特性流量脉动减振降噪　出处：《机床与液压》2017年19期 　论文类型：期刊论文

【摘要】：为提高液压动力系统的可靠性和性能的稳定性,运用FLUENT软件对齿轮泵的二维内部流场进行了瞬态仿真分析,研究了油液的压缩性、黏度等特性对齿轮泵内部流场以及泵出口压力和流量脉动的影响。仿真结果表明:齿轮泵在运转过程中,内部油液的密度、黏度、温度和压力等随环境工况改变发生变化;在齿轮啮合处,油液会发生明显的气穴现象;在转速为600 r/min,负载压力为2.5 MPa时,泵出口的流量脉动特征值较不考虑时增大了1.2倍;经试验验证,泵出口压力脉动动态误差在4.2%以内,为开展齿轮泵的减振降噪及优化设计等方面的研究提供了有效的工具。
[Abstract]:In order to improve the reliability and stability of hydraulic power system, the transient simulation analysis of two-dimensional internal flow field of gear pump was carried out by using FLUENT software, and the compressibility of oil was studied. The effects of viscosity and other characteristics on the internal flow field of the gear pump as well as the pressure and flow pulsation at the outlet of the pump. The simulation results show that the density and viscosity of the oil in the gear pump are in operation. The temperature and pressure change with the change of environment condition. In the gear meshing place, the oil will have obvious cavitation phenomenon; When the speed is 600rm / min and the load pressure is 2.5 MPa, the flow pulsation characteristic value of the pump outlet is 1.2 times higher than that of the unconsidered pump. Experimental results show that the dynamic error of pump outlet pressure pulsation is less than 4.2%, which provides an effective tool for the research of vibration and noise reduction and optimization design of gear pump.
【作者单位】：西安建筑科技大学机械电子技术研究所;
【基金】：国家自然科学基金资助项目(51275375) 西安建筑科技大学青年基金项目(QN1532)
【分类号】：TH137.51
【正文快照】： 0前言齿轮泵具有结构简单、体积小、质量轻、自吸性好和污染敏感性小等优点,被广泛应用于机床、轻工、冶金、建筑、船舶、飞机、汽车和石化等机械产品中[1]。同时随着人们对环保和智能化控制的重视,对齿轮泵整体性能的要求更加严格,低噪声、零泄漏及智能化已成为齿轮泵发展的

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