高炉炉顶齿轮箱间接故障诊断方法研究  

Research on Indirect Fault Diagnosis Method of Top Gearbox on Blast Furnace

作　　者：赵向丽[1,2] 罗新发[1,2] 高立新[1,2] 

机构地区：[1]北京工业大学北京市先进制造技术重点实验室,北京100124 [2]河北钢铁集团宣钢自动化公司,河北张家口075100

出　　处：《机械设计与制造》2014年第4期33-35,共3页Machinery Design & Manufacture

基　　金：北京市自然科学基金面上项目(3112004)

摘　　要：针对高炉炉顶齿轮箱低速重载零部件故障难以诊断的问题,提出一种振动信号的间接诊断方法,有效利用齿轮箱接近输入端高速旋转零部件振动特征分析判断低速零部件故障;针对现有诊断方法对高炉炉顶齿轮箱故障诊断不能识别全部故障和达到准确故障定位的问题,提出一种运用振动信号分析的高炉炉顶齿轮箱故障诊断方法,实现准确判别和定位故障。发现上部齿轮箱高速零部件特征频率的基频和倍频两侧若有明显的下级传动链低速零部件故障特征频率的频率间隔,解调后低频段有多个下级传动链低速零部件故障特征频率的频率间隔,则故障发生位置为下级传动链低速部分。Aiming at the difficulties in diagnosis for low speed and heavy duty components of furnace top gearbox, an indirect diagnosis method for vibration signal is proposed, through which the vibration features of high speed rotating parts that near input end of gearbox is effectively utilized and analyzed for fault judgment of low speed components. Since the identification for all faults and accurate fault location cannot be realized by using the existing diagnosis methods, a method of vibration analysis for fault diagnosis to furnace top gearbox is presented to realize accurate judgment and fanlt location. It can be found out that if near the basic frequency and double frequency of characteristic frequency of high speed components of upper gearbox, there were frequency spacing of fault characteristic frequency of low speed components of subordinate transmission chain apparently showing up, which also happened in low frequency range after demodulation, then the fault location can be determined to the low speed pacts of subordinate transmission chain.

关 键 词：高炉炉顶齿轮箱 间接故障诊断方法 振动信号分析 特征频率 解调 

分 类 号：TH16[机械工程—机械制造及自动化] TF549[冶金工程—钢铁冶金]