高速纸机烘缸轴承过早失效分析及改善研究  

The premature failure analysis of dryer bearings for high speed paper machines and its service life improvement

作　　者：张笑如[1,2] 朱晓广 张辉[1] 

机构地区：[1]南京林业大学江苏省制浆造纸科学与技术重点实验室,南京210037 [2]亚洲浆纸金东纸业(江苏)股份有限公司,江苏镇江212132

出　　处：《中华纸业》2014年第18期26-30,共5页China Pulp & Paper Industry

基　　金：江苏高校优势学科建设工程资助项目(PAPD)

摘　　要：利用振动监测与故障诊断技术和油品分析技术对高速纸机前干燥部烘缸轴承进行监测跟踪,并对烘缸轴承的过早失效机理进行了研究。结果表明:烘缸轴承对润滑要求非常苟刻;润滑失效可致其过早失效;在不改变润滑油型号前提下,增大烘缸轴承座进油、排油温差,增大循环润滑油流量,促进带走烘缸轴承运行产生的热量,使润滑油工作实际黏度相对增加,有利于润滑油膜形成,从而延长烘缸轴承使用寿命。Based on the fault vibration frequency spectrums got with the dynamic vibration monitoring and fault diagnosis as well as the lubricating oil characteristics, the condition of drying cylinder bearings and the bearing premature failure mechanism were studied. The results show that the lubricating requirement of the dryer bearings is more rigorous than other rolls＇ bearings; the premature failure appears due to lubrication failure. Under the lubricating oil kept unchanged, increasing the temperature difference between inlet and outlet of lubricating oil, increasing the lubricating oil flow can carry away more heat from the working bearing, which can increase the viscosity of the lubricating oil to form oil film comparatively and extend the service life of the dryer bearings.

关 键 词：高速纸机 烘缸轴承 故障诊断 润滑失效 轴承寿命改善 

分 类 号：TS734[轻工技术与工程—制浆造纸工程]