径向柱塞泵滑靴副的流场及泄漏量分析
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摘要
滑靴副是径向柱塞泵中的重要摩擦副。应用Fluent软件对径向柱塞泵滑靴副进行流场仿真模拟,研究液压油在滑靴副流道中的流动特性,确认液压油在油腔中心有局部压力突变现象,会造成滑靴副在运动过程中产生振动和噪声,造成能量损失,并产生大量热量,在长时间工作后出现胶合现象。同时应用Fluent软件的仿真计算功能,计算油膜在标准和非标准工作压力下的泄漏量,确认在相同条件下泄漏量随着入口压力的增大而增大,为后续研究径向柱塞泵的容积效率提供参考。
The slipper pair is an important friction pair in radial plunger pump.Fluent software was used to simulate the flow field of the slipper pair of the radial plunger pump and study the flow behavior of the hydraulic oil in the flow passage of the slipper pair.It was confirmed that the hydraulic oil had a sudden change of partial pressure in the center of the oil chamber,which would cause the generation of vibration and noise during running of the slipper pair,resulting in energy loss and a large amount of heat.After a long time operation,adhesive bonding may occur.At the same time,the simulation calculation function of Fluent software was used to calculate the leakage rate of the oil film under standard and non-standard working pressures.It was confirmed that under the same conditions,the leakage rate might be increased in company with the built-up inlet pressure,which might provide a reference for the follow-up study on the volumetric efficiency of radial plunger pump.
The slipper pair is an important friction pair in radial plunger pump.Fluent software was used to simulate the flow field of the slipper pair of the radial plunger pump and study the flow behavior of the hydraulic oil in the flow passage of the slipper pair.It was confirmed that the hydraulic oil had a sudden change of partial pressure in the center of the oil chamber,which would cause the generation of vibration and noise during running of the slipper pair,resulting in energy loss and a large amount of heat.After a long time operation,adhesive bonding may occur.At the same time,the simulation calculation function of Fluent software was used to calculate the leakage rate of the oil film under standard and non-standard working pressures.It was confirmed that under the same conditions,the leakage rate might be increased in company with the built-up inlet pressure,which might provide a reference for the follow-up study on the volumetric efficiency of radial plunger pump.
引文
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[3]孙志慧.250 m L/r新型径向柱塞泵泵体结构优化[D].太原:太原科技大学,2010.
[4]韩雪梅,王荣哲,王平.新型径向柱塞泵摩擦副泄漏原因分析与改进[J].液压气动与密封,2000(3):12-13,53.
[5]潘社卫,陈卓如.液压马达滑靴副动态倾侧性能研究[J].机床与液压,1999(5):39-41.
[6]周继陈,周俊杰,荆崇波,等.静压支承式滑靴副油膜动态特性研究[J].液压与气动,2017(8):20-25.
[7]易金玲.径向柱塞泵内流道流场分析及配流轴结构优化[D].太原:太原科技大学,2012.
[8]周雪漪.计算水力学[M].北京:清华大学出版社,1995.
[9]王福军.计算流体动力学分析——CFD软件原理与应用[M].北京:清华大学出版社,2004.
[10]陶文铨.数值传热学[M].2版.西安:西安交通大学出版社,2001.
[11]卢义敏,周华,杨华勇.纯水液压泵配流盘的仿真研究[J].液压与气动,2005(7):56-57.
[12]阎超.计算流体力学方法及应用[M].北京:北京航空航天大学出版社,2006.
[13]佟佳岩,蔡慧明,李可.基于有限元的RV减速器主要零件模态仿真分析[J].机械制造,2017,55(11):58-61,64.