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Rotating machine abnormality detection device and method and rotating machine

  • US 10,247,599 B2
  • Filed: 08/18/2015
  • Issued: 04/02/2019
  • Est. Priority Date: 09/12/2014
  • Status: Active Grant
First Claim
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1. A rotating machine abnormality detection device for detecting an abnormality in a rotating machine including a rotary member rotatable about a predetermined axis, comprising:

  • an ultrasonic wave measuring section for measuring a vibration in an ultrasonic wave band caused by the rotary member;

    an abnormality detecting section for detecting an initial abnormality in the rotating machine based on first measurement data obtained by the ultrasonic wave measuring section; and

    a vibration measuring section for measuring a vibration in an audible band caused by the rotary member, whereinthe abnormality detecting section determines, after detecting the initial abnormality, at least one of an abnormality type and an abnormality degree based on second measurement data obtained by the vibration measuring section,the rotary member includes a pair of sub rotary members engageable with each other, and a casing housing the pair of sub rotary members,abnormality types include a first abnormality in which the sub rotary members come into contact with each other, and a second abnormality in which at least one of the sub rotary members comes into contact with the casing, andthe ultrasonic wave measuring section and the vibration measuring section are mounted on an outer surface of the casing.

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