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发电厂锅炉常用的 Y4-73-11型高效风机,轴承座与主轴之间采用工业毛毡密封,运行中普遍存在严重漏油的现象,更换毛毡和调整紧力,也未能消除。通过运行观察和模拟试验,发现油室内的润滑油在滚珠轴承高速旋转时形成飞溅小油珠,溅于油室的四壁,油室顶部的油珠逐渐汇集成大油珠而向下滴落,其中一部分滴落在靠近密封装置的主轴上,由于主轴高速旋转,部分油在离心力作用下甩向油室,而
Y4-73-11 high-efficiency fan, commonly used in power plant boilers, is sealed with industrial felt between the bearing seat and the spindle. The phenomenon of serious oil leakage is common during operation. Felt replacement and adjustment of tightness are also not eliminated. Through the operation of observation and simulation tests, it was found that the oil in the oil chamber formed splashes of small oil droplets on the rotation of the ball bearings at high speed. The oil splashed on the four walls of the oil chamber, the oil droplets on the top of the oil chamber gradually converged into large oil droplets and dropped , Part of which drips close to the main shaft of the sealing device. Due to the high speed rotation of the spindle, part of the oil is thrown to the oil chamber under the action of centrifugal force.