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Pump Vibration

Vibration Analysis of Vertical Pumps

Paper No. 52

D. R. Smith/G. M. Woodward, Sound & Vibration, June 1988, pp. 24-30.

Vibration data were collected on several large motor-driven vertical cooling water pumps which experienced excessive wear of the impellers, wear rings and seals after a short period of operation. The data indicated that the problem was due to the operating speed being near the pump-motor system mechanical natural frequency, which resulted in excessive vibration levels on the motors and pump impellers. A successful solution to the problem involved increasing the stiffness of the pump mountings.

 

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