摘要
定义了过滤器的极限过滤粒径a和粒径敏感系数b两个特征参数。推导了过滤后油液中粒径在给定区间[x1,x2]的固体污染物数量Nx1,x2与过滤器特征参数和固体污染物粒径概率分布之间的关系式。算例表明:(1)存在μc和σp,当污染物粒径均值μ和均方根值σ分别小于μc和σp时,Nx1,x2的大小对μ和σ的变化十分敏感,并且当μ和σ分别等于μp(μp<μc)和σp时,Nx1,x2最大;(2)Nx1,x2随μ的增加而增加,随σ的增加而减小,并且Nx1,x2与a和b分别呈正指数和负指数关系。
Two characteristic parameters of a filter, limit filter particle size a and particle size sensitive coefficient b, were defined. The equation reflecting the relation among the solid contaminant number Nx1,x2 in the oil after being filtered which size is within interval [x1, x2 ], the defined filter parameters a and b and the probability distribution of the contaminant size was deduced. The computing example shows： （1）there exit μc and σp, and when the mean value μ and root-mean-square value σ of the wear particle size are less than μc and σp respectively the magnitude of Nx1,x2 varies very sensitively with the variation of μ and σ. Nx1,x2 reaches its maximum when μ equals μp （μp 〈 μc ） （ here μp 〈 μc ） or σ equals μp ; （2） Nx1,x2 increases with μ but decreases with σ. And Nx1,x2 has respectively a positive and negative exponential relation with μ and σ.
出处
《机床与液压》
北大核心
2007年第2期227-228,217,共3页
Machine Tool & Hydraulics
关键词
液压油
过滤器特征参数
固体污染物
粒径
概率分布
Hydraulic oils Filter characteristic parameter
Solid contaminant
Particle size
Probability distribution
