引风机叶片磨损引起振动及失速的诊断处理  

VIBRATION AND STALL CAUSED BY ABRASION OF INDUCED FAN BLADE:DIAGNOSIS AND PROPOSAL

作　　者：刘占辉[1] 卢一兵[1] 刘静宇[1] 罗剑斌[1] 

机构地区：[1]河南电力试验研究院,河南郑州450052

出　　处：《热力发电》2012年第8期51-53,共3页Thermal Power Generation

摘　　要：某引风机出现振动超标、出力不足及抢风等故障,分析认为是烟气中粉尘含量较高,粉尘对引风机叶轮及叶片的不均匀磨损造成转子质量不平衡诱发风机振动,并引起风机特性改变造成出力不足及失速"抢风"。对此,进行了叶片修复及动平衡处理。Failures like overproof vibration,insufficient output and air-snatching occurred on induced draft(ID) fans in a power plant.Analysis indicate that,mass imbalance of the rotor causes the vibration,due to the uneven abrasion on impeller and blades of ID fans by dust,which has a relatively high content in flue gas.So the ID fan performance changes and result in insufficient output and stall.Thus,the repair and dynamic balance treatment for blades is conducted.

关 键 词：引风机 静叶可调风机 振动 导叶 磨损 风机出力 抢风 

分 类 号：TK223.26[动力工程及工程热物理—动力机械及工程]