摘要
通过对某选煤厂的2台三产品重介旋流器的连续监测,获得了2类卡堵故障的加速度信号,经分析认为,是由于堵塞发生在不同位置产生的同类故障的不同表现.通过对不同状态下信号波形的均方根值进行比较,分析结果显示卡堵故障发生时的均方根值均比正常状态高(或低)数倍以上.由此提出了用均方根值的变化进行旋流器卡堵故障监测的方法,并分析了造成这一能量变化的原因.结果表明,此方法能够快速、准确地进行实时报警,大大缩短故障排除的周期.
After monitoring two 3-product heavy-medium cyclones with three accelerate sensors at the respective feed gate, the normal state and fault state signals were collected, two kinds of signals were processed by RMS （Root Mean Square） and kurtosis. The results show that the RMS change is more than 2 to 20 times between fault and normal signals. But the kurtosis change is inconspicuous. Based on the above results, a fault monitoring method was proposed with supervising the change of RMS. It can implement the real-time alarming and shorten the period of fault eliminated.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2008年第2期228-231,共4页
Journal of China Coal Society
基金
国家自然科学基金重点资助项目(50335030)
关键词
三产品重介旋流器
堵塞
故障诊断
故障监测
3-product heavy-medium cyclone
block up
fault diagnosis
fault monitoring
