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工程设计学报  2014, Vol. 21 Issue (6): 540-544    DOI: 10.3785/j.issn. 1006-754X.2014.06.006
建模、分析、优化和决策     
复合表面微凹坑对机械端面密封动压性能的影响
李茂元1,吴玉国1,吴 胜2,陈 彬1
1.安徽工业大学 机械工程学院, 安徽 马鞍山 243032;2.马鞍山钢铁股份有限公司,安徽 马鞍山 243000
Effect of mixed micro-dimple on the hydrodynamic properties of mechanical face seal
LI Mao-yuan1, WU Yu-guo1, WU Sheng2, CHEN Bin1
1.School of Mechanical Engineering, Anhui University of Technology, Ma′anshan 243032, China;
2. Ma′anshan Iron & Steel Company Limited, Ma′anshan 243000, China;
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摘要: 针对表面织构可以有效改善相对运动表面的摩擦学性能,建立了均匀分布的微凹坑机械端面密封的理论模型,采用有限差分法对流体动压润滑方程进行求解,获得了密封端面间气膜的无量纲压力分布,并考察了微凹坑形状和复合形式对密封端面的无量纲平均压力pav的影响.结果表明:微凹坑在相同的形状下,大小尺度不同的复合凹坑比单一凹坑具有更强的动压性能,而以矩形凹坑表现得最为明显,其动压性能效率提高率ξ3可达6.79%;微凹坑的复合可明显增强密封端面动压性能.
关键词: 机械端面密封有限差分法复合凹坑动压性能    
Abstract: Surface texturing has been recognized to be efficient in modifying the tribological performances of relatively moving surface. A theoretical model of mechanical face seal within equally distributed microdimples was developed, the finite difference method was utilized to calculate the hydrodynamic lubrication equation and the dimensionless pressure distribution of the gas film between the face seal was obtained. The effect of the the shape and mixed patterns of the micro-dimples on the average dimensionless pressure pavof the face seal was also investigated. The results showed that the mixed dimples with different scale had a better performance of dynamic pressure than the seal face which distributed with large or small dimples only under the same shape,the rectangle dimple showed most clearly effect, the improve proportion of dynamic pressure performance ξ3could be reach to 6.79%. Mixed micro-dimple can improve the hydrodynamic properties of face seal obviously.
Key words: mechanical face seal    finite difference method    mixed dimple    hydrodynamic property
收稿日期: 2014-06-23 出版日期: 2014-12-28
基金资助:

安徽省研究生“千人培养计划”资助项目(20130018)

作者简介: 李茂元(1991—),男,安徽合肥人,硕士生,从事先进制造技术、微观摩擦学研究,E-mail:lmyahut@163.com. 通信联系人:吴玉国(1961—),男,安徽安庆人,教授,从事先进制造技术、数控技术理论与应用研究,E-mail:ygwu@ahut.edu.cn.
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引用本文:

李茂元,吴玉国,吴 胜,陈 彬. 复合表面微凹坑对机械端面密封动压性能的影响[J]. 工程设计学报, 2014, 21(6): 540-544.

LI Mao-yuan,WU Yu-guo,WU Sheng,CHEN Bin. Effect of mixed micro-dimple on the hydrodynamic properties of mechanical face seal. Chinese Journal of Engineering Design, 2014, 21(6): 540-544.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn. 1006-754X.2014.06.006        https://www.zjujournals.com/gcsjxb/CN/Y2014/V21/I6/540

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