文献类型：期刊文章

作　　者：孙见君[1] 顾伯勤[1] 魏龙[2]

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京210009 [2]南京化工职业技术学院机械技术系,江苏南京210048

出　　处：《化工学报》

基　　金：江苏省高校自然科学基金项目(04KJD530090);南京工业大学博士论文创新基金项目(38002014).~~

年　　份：2006

卷　　号：57

期　　号：7

起止页码：1626-1631

语　　种：中文

收录情况：AJ、BDHX、BDHX2004、CAS、CSCD、CSCD2011_2012、EI(收录号：20063810123737)、IC、JST、RCCSE、SCOPUS、ZGKJHX、核心刊

摘　　要：The existing leakage models,which include smooth plane leakage model,rough and waveform surface leakage model,and tapered-face leakage model,can not be applied to describing the active state of contacting mechanical seal.In these models,only prime microscopic surface topography and constant leakage rate are taken into consideration.Based on fractal geometry theory,a leakage model was established with consideration of the change of microscopic surface topography and time-correlation of leakage rate.The relationship between leakage rate,the change of microscopic surface topography of seal surface and leaking channel under operation conditions was described quantitatively by fractal parameter with unattached dimension.There existed an optimum fractal parameter during the mechanical seal running,which corresponded to the lowest leakage rate.The research results helped to ascertain the roughness and waviness of seal surface,and to select machining methods of sealing members.According to the leakage model presented in this paper,the leakage rate of contacting mechanical seal can be forecasted,which may be used as reference in the maintenance and operation of mechanical seals.

关 键 词：机械密封 泄漏模型  表面微观形貌 分形几何  

分 类 号：TH136] TH161.14