考虑空化效应的齿轮泵流量特性研究

doi:10.3969/j.issn.1000-1093.2020.01.022

摘要/Abstract

摘要： 齿轮泵的流量品质对车辆液压操纵系统和润滑系统性能有重要影响，为此开展了空化状态下齿轮泵流量稳定性及其影响规律的研究。忽略空气在油液内微弱的溶解效应，根据油液初始状态和实时压力计算油液含气率，考虑含气率对油液密度、有效体积弹性模量和黏度的影响，建立流体空化模型。将流体空化模型与齿轮泵动力学模型相耦合，在复杂系统建模与仿真软件AMESim环境下仿真求解，分析吸油压力、转速和负载压力对齿轮泵流量特性的影响规律。结果表明：仿真得到的齿腔压力脉动、容积效率与文献［16］试验数据比较一致；吸油压力对齿轮泵流量脉动影响最为显著，当吸油压力由1.01 bar降低至0.27 bar时，流量脉动增大1倍多，容积效率降低；转速升高会加剧空化倾向；负载压力升高对齿轮泵流量脉动影响很小；该研究对齿轮泵流量稳定性的预测和改善有理论指导意义。

关键词: 齿轮泵, 空化, 流量特性, 体积弹性模量, 流量脉动

Abstract: The flow quality of gear pump has an important influence on the performances of hydraulic control system and lubrication system in the vehicles. The flow characteristics of gear pump in the cavitation state are studied. The gas content is calculated from the initial state and the real-time pressure, neglecting the faintly dissolved effect of air in the oil. A fluid cavitation model is established, in which the effect of gas content on oil density, effective bulk modulus and viscosity is considered. The fluid cavitation model is coupled with a gear pump dynamics model and simulated in AMESim environment. The effects of the suction pressure, rotation speed and load pressure on the flow pulsation of gear pump are analyzed. The results show that the pressure pulsation and volumetric efficiency obtained by the simulation model are consistent with the experimental data. The decrease in the suction pressure leads to the increase in the flow pulsation of gear pump and the decrease in the volumetric efficiency. The increase in the rotation speed increases the cavitation tendency. The increase in load pressure has little effect on the flow pulsation of gear pump. Key

Key words: gearpump, cavitation, flowcharacteristic, bulkmodulus, flowpulsation

中图分类号:

TH137.51

周俊杰, 苑士华，荆崇波. 考虑空化效应的齿轮泵流量特性研究[J]. 兵工学报, 2020, 41(1): 189-195.

ZHOU Junjie, YUAN Shihua, JING Chongbo. Research on Flow Characteristics of Gear Pump Considering Cavitation Effect[J]. Acta Armamentarii, 2020, 41(1): 189-195.

参考文献

［1］ IVANTYSYN J, IVANTYSYNOVA M. Hydrostatic pumps and motors［M］. New Delhi, India: Academia Books International, 2001.
［2］栾振辉. 齿轮泵研究的现状与发展［J］. 起重运输机械, 2005(6): 11-13.
LUAN Z H. Research status and development of gear pumps［J］. Hoisting and Conveying Machinery, 2005(6): 11-13. (in Chinese)

［3］ ZARDIN B, BORGHI M. Modelling and simulation of external gear pumps and motors［C］∥Proceedings of the 5th FPNI PhD Symposyum. Kracow, Poland: Cracow University of Technology, 2008.
［4］马泽.异齿数对齿轮泵流量脉动性能的影响［J］. 科学技术创新,2018(7):44-45.
MA Z. Influence of different tooth number on the flow pulsation of gear pump［J］. Science and Technological Innovation, 2018(7):44-45. (in Chinese)

［5］ LIU D W, BA Y B, REN T Z. Flow fluctuation abatement of high-order elliptical gear pump by external noncircular gear drive［J］. Mechanism and Machine Theory, 2019, 134: 338-348.
［6］李壮云.液压元件与系统［M］.第3版. 北京:机械工业出版社,2011.
LI Z Y. Hydraulic components and system［M］. 3rd ed. Beijng: China Machine Press, 2011. (in Chinese)

［7］ MANRING N H, KASARAGADDA S B. The theoretical flow ripple of an external gear pump［J］. Journal of Dynamic Systems Measurement and Control, 2005, 125（3）: 396-404.
［8］ VACCA A, GUIDETTI M. Modelling and experimental validation of external spur gear machines for fluid power applications［J］. Simulation Modelling Practice and Theory, 2011, 19(9): 2007-2031.
［9］ VACCA A, DHAR S, OPPERWALL T. A coupled lumped parameter and CFD approach for modeling external gear machines［C］∥Proceedings of the 12th Scandinavian International Conference on Fluid Power. Tampere, Finland: Linkping University, 2011.

［10］ WOO S, OPPERWALL T, VACCA A, et al. Modeling noise sources and propagation in external gear pumps［J］. Energies, 2017, 10(7): 1068.
［11］王积伟, 章宏甲, 黄谊.液压传动［M］. 第2版. 北京:机械工业出版社, 2011.
WANG J W, ZHANG H J, HUANG Y. Hydraulic transmission［M］. 2nd ed. Beijing: China Mechine Press,2011.(in Chinese)

［12］李明学, 杨国来, 李晓青, 等. 吸油压力对外啮合齿轮泵空化特性的影响［J］. 农业机械学报, 2019,50(3):420-426.
LI M X, YANG G L, LI X Q, et al. Influence of suction pressure on cavitation characteristics of external gear pump［J］. Transactions of the Chinese Society for Agricultural Machinery, 2019, 50(3): 420-426. (in Chinese)
［13］ SCHNERR G H,SAUER J. Physical and numerical modeling of unsteady cavitation dynamics［C］∥Proceedings of the 14th International Conference on Multiphase Flow. New Orleans, LA, US: University of New Orleans, 2001: 139.
［14］ Singhal A K, Athavale M M, LI H Y, et al. Mathematical basis and validation of the full cavitation model［J］. Journal of Fluids Engineering, 2002,124 (3):617-624.
［15］ ZWART P J, GERBER A G, BELAMRI T. A two-phase flow model for predicting cavitation dynamics［C］∥Proceedings of the 15th International Conference on Multiphase Flow. Yokohama,Japan: Yokohama National University, 2004:152.
［16］ ZHOU J J,VACCA A,MANHARTSGRUBER B. A novel approach for the prediction of dynamic features of air release and absorption in hydraulic oils［J］.Journal of Fluids Engineering,2013,135 (9):091305.
［17］魏超,周俊杰,苑士华. 液压油体积弹性模量稳态模型与动态模型的对比［J］. 兵工学报, 2015, 36(7):1153-1159.
WEI C, ZHOU J J, YUAN S H. Comparison of steady and dynamic models for the bulk modulus of hydraulic oils［J］. Acta Armamentarii, 2015, 36(7):1153-1159. (in Chinese)

［18］ ZHOU J J, VACCA A, CASOLI P. A novel approach for predicting the operation of external gear pumps under cavitating conditions［J］. Simulation Modelling Practice and Theory, 2014, 45: 35-49.
［19］苑士华,周俊杰,罗先伟,等. 轴向柱塞泵空化时气相动态演进过程及影响［J］. 兵工学报,2015, 36(3):559-565.
YUAN S H, ZHOU J J, LUO X W, et al. Dynamic evolution and effects of gas phase in cavitation of axial piston pump［J］. Acta Armamentarii, 2015, 36(3):559-565. (in Chinese)

第41卷第1期
2020 年1月兵工学报ACTA
ARMAMENTARIIVol.41No.1Jan.2020

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