双级动叶可调轴流式引风机振动故障分析与处理

Vibration Fault Analysis and Processing of Two-Stage Adjustable Moving Blade Draft Fan

针对某电厂双级动叶可调轴流式引风机振动大故障,结合该型式引风机结构特点,进行了振动测试,并根据测试所得各轴承的振动数据,分析认为该引风机的两级动叶存在质量不平衡。通过采用单平面动平衡处理措施,解决了该引风机的振动故障问题。

For the vibration problem of the two-stage adjustable moving blade axial flowdraft fan in a power plant, according to the structure characteristics of the draft fan, thevibration tests were performed, based on each bearing vibration data of the test result. Theanalysis showed that the two-stage blade of the draft fan was unbalanced. By using themethod of single plane balancing, the fan vibration was finally solved.