Discussion on the vibration analysis of a single unit

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This post was last edited by Young Builder on 2018-1-10 at 10:25. It is a centrifuge driven by a steam turbine, and the vibration at the connection point of the centrifuge is abnormal; this situation occurred suddenly during normal operation, after which the vibration remained in such a fluctuating state. There are no significant changes in the non-tied-end, turbine end, or shaft displacement. There is no clear association with rotational speed. The fluctuations are uneven. The spectrum is dominated by the first harmonic; the second harmonic accounts for more than half of the first harmonic’s magnitude. However, the value of the 1/32nd harmonic is large and close to that of the first harmonic, with occasional cases where it exceeds the first harmonic. The coupling is a diaphragm coupling. . Talk it over with someone experienced.