Causes of radial vibration in MVR compressors
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I would like to ask the experts here: The MVR compressor suddenly experienced radial vibration, which led to its shutdown via interlock. What could be the possible causes of this radial vibration?
Since the interlock caused the machine to shut down, it is necessary to disassemble it and check whether the bearing bush is damaged. The main factors causing radial vibration are an excessive clearance between the bearing shells and an imbalance in dynamic balance resulting from scaling on the impeller. First, check the bearing shells; if there are no problems, then remove the cover to check whether the rotor is scaled. For reference.
Since it is steam, could vibration be caused by liquid carried on the impeller?
Since the interlock caused the machine to shut down, it is necessary to disassemble it and check whether the bearing bush is damaged. The main factors causing radial vibration are excessive bearing clearance and dynamic imbalance resulting from vapor cavitation at the impeller inlet. For reference.
Could it be that something has fallen off the impeller?