600 MW机组非典型性一次风机振动故障诊断

Fault Diagnosis of Atypical Primary Air Fan Vibration in 600 MW Unit

某大型火电站600 MW机组定速双级高压头一次风机,运行中振动持续增加,一度接近风机振动报警值。通过现场开展全面的振动测试工作,结合振动频谱重点分析振动分布特征,准确诊断支撑系统及轴系中心缺陷及其对风机振动的影响,为提高风机振动故障诊断工作提供了宝贵借鉴。

Large thermal power station widely used double constant speed stage high pressure head a wind machine,running vibration continues to increase,once close to fan vibration alarm value.Through the field to carry out a comprehensive vibration test,combined with the vibration frequency spectrum analysis of the vibration distribution characteristics,accurate diagnosis of the support system and the center of the defects of the system,the impact of wind turbine vibration,in order to provide valuable reference for improving the fault diagnosis of fan vibration.