机械密封端面液膜空化的研究进展  

Overview on liquid film cavitaion in mechanical seal faces

作　　者：陈汇龙[1] 吴强波 左木子[1] 徐成[1] 胡吉[2] 李述林[3] 

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013 [2]江苏大学土木工程与力学学院,江苏镇江212013 [3]中航工业金城南京机电液压工程研究中心,江苏南京211100

出　　处：《排灌机械工程学报》2015年第2期138-144,共7页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金资助项目(51279067);航空科学基金资助项目(201328R3001)

摘　　要：水力空化是流体机械和液压系统等旋转机械中存在的一种流体力学现象,旋转机械使用的机械密封凭借动压效应在密封端面间形成厚度为微米级别的润滑膜,而微尺度液膜产生的空化现象对机械密封的性能有着重要的影响,端面液膜空化问题成了机械密封研究的热点问题之一.为了更好地把握研究方向,从空化机理、试验研究和理论研究等3个方面分析了液膜润滑机械密封空化问题的研究现状,综合分析了宏观空化、微观空化、空化边界条件和空化算法等问题的研究进展.在对相关研究进行总结的基础上,对未来机械密封空化的研究方向进行了展望:应着重从空化理论模型、数值仿真技术、空化控制新技术和有效测量新技术等方面深入开展机械密封空化研究.Hydrodynamic cavitation is an extensive fluid mechanical phenomenon in rotating machines such as hydraulic machinery and hydraulic system. The micro-lubricating film is formed by dynamic pressure effect between fluid film lubricated mechanical face seals used in rotating machines. The cavitation of micro-scale fluid film between seal faces plays an important role in the performance of mechanical seals,which has become one of the hot issues of mechanical seal research. In order to grasp research directions in the future,the cavitation issue in liquid film lubricated mechanical seals was overviewd from the aspects of cavitation mechanism,experimental research and theoretical research.The progress of macroscopic cavitation,micro cavitation,cavitation boundary conditions and algorithms was analyzed synthetically. Subsequently,the future research directions of mechanical seals cavitation are proposed,which includes cavitation theoretical model,numerical simulation technology,new cavitation control technology and effective measurement technology.

关 键 词：机械密封 液膜润滑 微观空化 水力机械 

分 类 号：S277.9[农业科学—农业水土工程] TH117.2[农业科学—农业工程]