高速纸机烘缸轴承过早失效分析及改善研究.pdfVIP

研究开发 R D 高速纸机烘缸轴承过早失效分析 及改善研究 ⊙ 1,2 2 1 张笑如 朱晓广 张辉 [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] 张笑如，硕士，工程师；研究方 向：现代造纸机械状态监测与 The premature failure analysis of dryer bearings for high 故障诊断技术。 speed paper machines and its service life improvement 1,2 2 1 ⊙ZHANG Xiao-ru , ZHU Xiao-guang , ZHANG Hui [1. Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China; 2. Gold East Paper (Jiangsu) Co., Ltd. of APP, Zhenjiang 212132, Jiangsu, China] + + 中图分类号：TS734 .4; TS736 .2 文献标志码：A 文章编号：1007-9211(2014)18-0026-05 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。 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 Abstract: 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