多孔端面气体密封无压开启特性的实验研究  

Experimental Research of a Hydrodynamic Multi-Pored Face Gas Seal at Zero Pressure

作　　者：李叶枫[1] 盛颂恩[1,2] 白少先[1,2] 彭旭东[1,2] 

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310032 [2]浙江工业大学过程装备及其再制造教育部工程研究中心,浙江杭州310032

出　　处：《润滑与密封》2010年第8期8-11,共4页Lubrication Engineering

基　　金：国家自然科学基金资助项目(50775206和50805130);浙江省自然科学基金项目(Y1090620和R1090833);清华大学摩擦学国家重点实验室开放基金项目(SKLTKF08B01)

摘　　要：通过无压开启特性实验,对方向性多孔端面机械密封的动压效应进行研究。实验中采用2种不同结构端面,对不同转速工况下的密封开启气膜厚度和摩擦扭矩进行测量,对密封端面的动压开启特性进行分析。结果表明:方向性微孔端面能够增大干式气体密封的动压开启力,保证机器启动时密封端面迅速打开,从而避免端面的接触磨损。The hydrodynamic effect of a mechanical seal with directional multi-pores was studied by the zero-pressure-open experiments. Two kinds of different face structures with directional micropores onto their surfaces were studied. The film thickness and friction torque between the faces were measured at different speeds. The opening properties due to the hydrodynamic pressure of the gas film were analyzed. The results show that the directional micropores can increase opening force of such a gas face seal,and then to ensure the quick opening of the faces so that the face wear is avoided.

关 键 词：方向微孔 气体密封 动压效应 开启力 

分 类 号：TH117.2[机械工程—机械设计及理论]