On the issue of shaft vibration in centrifugal compressors
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Our factory’s centrifugal compressors are equipped with shaft vibration probes, two of which are installed at each journal, arranged at 90-degree angles to one another. Recently, due to the high amount of suspended particles in the coke oven gas, scaling has formed on the blades. When cleaning with water, factors such as time and pressure result in uneven removal of the scaling from the impeller, which in turn leads to increased shaft vibration levels and sometimes causes these values to exceed the alarm threshold. This forces the compressor to stop operating. Such a situation poses a serious risk to the long-term operation of the compressor. I would like to ask the experts: has this kind of problem occurred in your compressors as well, and how did you resolve it?
Wash thoroughly to remove suspended particles and prevent scaling.