Cause Analysis and Treatment of Abnormal Vibration of the Stator Cooling Water Pump Motor
[Purposes]Generator set#1 in a certain power plant experienced excessive amplitudes in the electric motors of cooling water pumps A and B,surpassing the specified standard values.Moreover,the vibrations were unstable,with an increasing trend in amplitude,which poses a significant risk to the safe and stable operation of the equipment.To eliminate abnormal equipment vibrations and ensure safe and stable operation,it is necessary to conduct vibration monitoring and analysis.[Methods]Through moni-toring and analysis with a vibration analyzer,it was determined that loose grounding bolts,motor base plate deformation,and ineffective grouting of the foundation were the reasons for the excessive ampli-tudes in the electric motors.[Findings]After tightening the grounding bolts,the amplitudes in all direc-tions of the cooling water pump B electric motor decreased within the standard range.As there was no plan for a shutdown in the near future,it is impossible to grout the motor foundation or replace the base plate.Therefore,a creative fastening components was devised.[Conclusions]This fastening component can effectively solve the problem of excessive vibration caused by deformation of the platform and lack of grouting in the foundation.
stator cooling water pump motorlooseness of the foundationsecondary groutingrag boltthe fastening components
万方数据
维普
