Turbine shaft vibration
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What causes the high shaft vibration on the non-driving side of the compressor? Is it related to oil temperature? Please advise, experts
There are many causes of vibration, including alignment issues, imbalance, scaling, and oil film oscillations; oil temperature is also one of such causes.
On the side where the compressor is connected to the turbine, the alarm value is 95μm, while the actual value has already reached 75
Has the turbine manufacturer given any explanation?
It’s past the warranty period; I’m going to research it on my own
If the unilateral vibration is large, the likelihood of shaft misalignment is higher.
It may be related to the load, the center of the coupling, the bearing clearance, etc.!
If the inspection fails to identify the root cause of the problem, on-site dynamic balancing is still necessary! !
The higher the load, the greater the vibration at the driven end, indicating a higher likelihood of misalignment during installation. If the load fluctuations have little correlation with vibration, it indicates that it is related to oil temperature, that is, oil film oscillation. If the oil temperature is too high or too low while the load remains constant, the greater the vibration at the driven end, the more likely it is that it is related to oil temperature. ,
The defoaming mesh in our compressor inlet liquid separation tank breaking and getting trapped at the inlet of the impeller has also caused high vibration levels