機(jī)組動(dòng)靜部件碰摩是運(yùn)行中常見(jiàn)的重要故障,它對(duì)正常運(yùn)轉(zhuǎn)有直接影響。現(xiàn)場(chǎng)碰摩的診斷難度較高,不及時(shí)、不準(zhǔn)確的診斷都會(huì)造成經(jīng)濟(jì)損失。結(jié)合某電廠一臺(tái)300MW機(jī)組低壓通流部分發(fā)生碰摩時(shí)實(shí)際的振動(dòng)數(shù)據(jù),介紹了碰摩發(fā)生時(shí)傳感器間隙電壓、轉(zhuǎn)軸靜態(tài)軌跡以及相位表現(xiàn)出的征兆和特征,并介紹了現(xiàn)場(chǎng)緊急處理這種故障的方法。
關(guān)鍵詞:旋轉(zhuǎn)機(jī)械;碰摩;故障診斷
Abstract :The rubbing , which has a bad effect on turbo generators , is frequently found in power plants and complicated in diagno2 sis. An untimely and imprecise diagnosis will cause a large lost. From vibration statistics of a 300MW unit , the article introduced the gap plot , the shaft average centerline plot , the shaft moving centerline plot , and the phase analysis , all of which are important in the diagnosis of this fault. It also put forward a general method in coping with this kind of fault.
Key words :rotating machinery; rubbing; fault diagnosis