摘要
建立了研究部分端面微孔机械密封端面间液膜压力分布规律的理论模型,应用有限差分法求解了端面液膜压力的Reynolds控制方程,获得了端面液膜压力分布规律,并与端面全区域开微孔机械密封的情况进行了对比。研究了微孔密度Sp和微孔深径比ε对端面液膜压力的影响规律。结果表明:部分端面微孔机械密封的端面间液膜压力比端面全微孔的小;端面间液膜沿半径方向的最大压力降发生在孔区域结束处;端面液膜压力值最大值所对应的微孔密度Sp≈0.2,深径比ε≈0.02。
A theoretical analysis model of the liquid film pressure betweem the faces of partial surface texturing mechanical seals was presented.The film pressure was obtained by using finite different method(FDM)to solve the Renolds equation of controlling the film pressure.The pressure was compared with that of fully surface texturing mechanical seal.The effect of geometric parameters Sp,the micropores area density,and ε,the ratio of depth to diameter of the micropores,on the film pressure was investigated.The resu...
出处
《润滑与密封》
CAS
CSCD
北大核心
2008年第3期36-39,47,共5页
Lubrication Engineering
基金
云南省教育厅教学科研学术带头人项目
关键词
机械密封
部分端面微孔
液膜压力
有限差分法
mechanical seals
partial surface texturing
liquid film pressure
finite difference method
