Vibration Problems (Acoustical And Bearing Housing Resonance) Resolved On Centrifugal Pump
Abstract
Installing VFDs on pumps that were formerly constant speed pumps can cause new vibration problems to be encountered. Acoustical resonance conditions can occur in the long cross over. New methods of measuring acoustical cross over lengths is now available that provide better results. In some situation, vane pass frequencies can excite bearing housing natural frequencies and create a resonate conditions. Variable speed centrifugal pump have a much higher chance of having vibration problems and a lot of analysis and field testing needs to be performed to avoid problems.
Description
Case StudyCase Study 1
Subject
Pumping machineryCollections
Citation
Litton, William R.; Matlock, J.D. (2008). Vibration Problems (Acoustical And Bearing Housing Resonance) Resolved On Centrifugal Pump. Texas A&M University. Turbomachinery Laboratories. Available electronically from https : / /hdl .handle .net /1969 .1 /163914.