Analysis of the causes of high shaft vibration in steam turbines
Thread Content
The company has a steam turbine, and at one of the measurement points, the shaft vibration reached 110 um, while the bearing vibration was 23 um. Please help analyze the reasons for the large shaft vibration and how to resolve it
Just fluctuations at one measurement point? Could it be that the measurement point is inaccurate, which is causing those waves?
It’s possible that the vibration measurement point is incorrect; otherwise, it’s necessary to check whether there is a problem with the blade
When vibration increases, it is first necessary to rule out the possibility that it is a problem with the instrument; secondly, attention should be paid to the quality of the oil to ensure that high temperatures do not cause carbon buildup. It could also be a problem with the shaft itself, or it might be silicon or sodium accumulation on the guide vanes; it’s hard to say