Effect Of Mechanical Unbalance On Vibrations, Forces And Reliability Of A Single-Stage Centrifugal Pump
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The effect of rotor mechanical unbalance on pump vibrations was tested for a typical ANSI pump. It was found that significant damping of vibrations occurs at actual (wet) operations as compared to dry run. Rotor forces and deflections were also studied and determined to be small, compared to hydraulic unbalance for a wide range of unbalances. Shaft deflections were confirmed by testing a range of flows from runout to shutoff, to be within allowable limits, as governed by applicable industrial specifications.
Nelik, Lev; Jackson, Charles (1995). Effect Of Mechanical Unbalance On Vibrations, Forces And Reliability Of A Single-Stage Centrifugal Pump. Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University. Available electronically from