液压阻尼孔的宽温度范围流动特性试验研究

doi:10.3901/JME.2020.24.190

机械工程学报 ›› 2020, Vol. 56 ›› Issue (24): 190-197.doi: 10.3901/JME.2020.24.190

• 可再生能源与工程热物理 • 上一篇下一篇

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液压阻尼孔的宽温度范围流动特性试验研究

王文林¹, 樊友权², 戴谋军², 陈湘², 孔新^1,3, 吴永明³

1. 东莞理工学院机械工程学院东莞 523808;
2. 株洲联诚集团减振器有限责任公司株洲 412001;
3. 广东工业大学机电工程学院广州 510006

收稿日期:2020-02-27 修回日期:2020-08-16 出版日期:2020-12-20 发布日期:2021-02-05
通讯作者: 王文林(通信作者),男,1969年出生,博士,教授。主要研究方向为载运工具振动与控制、航天运载流体技术与可靠性。E-mail:pianowwl@vip.163.com
基金资助:
国家自然科学基金（11572123）和东莞理工学院高层次人才（KCYXM2017026）资助项目。

Wide Temperature Range Experimental Study into the Fluid Mechanics of Hydraulic Orifices

WANG Wenlin¹, FAN Youquan², DAI Moujun², CHEN Xiang², KONG Xin^1,3, WU Yongming³

1. School of Mechanical Engineering, Dongguan University of Technology, Dongguan 523808;
2. Zhuzhou Lince Group Shock Absorber Co., Ltd., Zhuzhou 412001;
3. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006

Received:2020-02-27 Revised:2020-08-16 Online:2020-12-20 Published:2021-02-05

摘要/Abstract

摘要： 研制一种适合对各种液压孔口或缝隙进行高低温流体力学试验的新型试验装置，运用该装置对具有不同几何参数的液压阻尼孔进行在-50~80℃宽温度范围内的流动特性试验，研究以普通抗磨液压油HM46和低温抗凝减振器油TITAN SAF 5045为工质及其温度变化时对液压阻尼孔流量-压力特性曲线、幂指数和流量系数的影响，研究表明，在低温条件下，液压阻尼孔的流量系数均因油液黏度增大、流动性变差而呈线性下降的趋势，从宏观上看，HM46通过液压阻尼孔时的流动稳定性较差，其对应流量系数的下降幅度明显大于TITAN SAF 5045对应的下降幅度，厚壁小孔流量系数的下降幅度明显大于薄壁小孔对应的下降幅度。研究所获得的新型试验装置、试验数据分析方法和具体理论公式为深入研究和优化现代液压元件在宽温度范围内的动态性能提供新型试验平台与理论基础。

关键词: 液压阻尼孔, 流体力学试验, 流量系数, 雷诺数, 油温

Abstract: A novel experimental equipment capable of testing the fluid mechanics of hydraulic orifices or gaps under low or high temperature conditions is developed. By using the equipment, experiments on discharge characteristics of hydraulic orifices with different geometric parameters are conducted in a wide temperature range of -50-80℃. The effects of the common anti-wear hydraulic oil HM46 and the anti-frozen shock absorber oil TITAN SAF 5045 with different temperatures on the flow-pressure characteristics and its exponent, discharge coefficient of the orifices are then investigated. The research results show that at low temperatures, discharge coefficients of the orifices will drop linearly due to viscosity increasing and fluidity decreasing of the fluids, and in a macro sense, when with HM46 the fluidity is worse and the discharge coefficient drop is obviously greater than that when with TITAN SAF 5045, the discharge coefficient drop of the thick-walled orifice is obviously greater than that of the sharp-edged orifice. The obtained new experimental equipment, test data processing approach and concrete theoretical formulae in this study have brought a new experimental platform and the basic theory for studying and/or optimizing the dynamic performance of modern hydraulic exponents in a wide temperature range.

Key words: hydraulic orifice, fluid mechanics experiment, discharge coefficient, Reynolds number, oil temperature

中图分类号:

TH137

王文林, 樊友权, 戴谋军, 陈湘, 孔新, 吴永明. 液压阻尼孔的宽温度范围流动特性试验研究[J]. 机械工程学报, 2020, 56(24): 190-197.

WANG Wenlin, FAN Youquan, DAI Moujun, CHEN Xiang, KONG Xin, WU Yongming. Wide Temperature Range Experimental Study into the Fluid Mechanics of Hydraulic Orifices[J]. Journal of Mechanical Engineering, 2020, 56(24): 190-197.

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液压阻尼孔的宽温度范围流动特性试验研究

Wide Temperature Range Experimental Study into the Fluid Mechanics of Hydraulic Orifices

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