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Axial vibration monitoring for detecting shaft misalignments in turbomachinary trains

  • US 8,322,223 B2
  • Filed: 04/23/2010
  • Issued: 12/04/2012
  • Est. Priority Date: 04/23/2010
  • Status: Active Grant
First Claim
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1. A system for determining a shaft misalignment in a train of components with serially coupled rotating shafts, comprising:

  • a sensor affixed to a component of the train proximate a rotating shaft, wherein the sensor collects vibration data along a longitudinal extent of the rotating shaft;

    a frequency analyzer for generating frequency domain data from the vibration data; and

    an analysis system for analyzing a frequency component of the frequency domain data at one times a rotational frequency of the rotating shaft to identify a misalignment between the rotating shaft and an adjacently coupled rotating shaft,wherein the train includes more than two components.

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