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Systems and methods for protecting rotating machines

  • US 8,665,104 B2
  • Filed: 04/29/2011
  • Issued: 03/04/2014
  • Est. Priority Date: 04/29/2011
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving, by a controller comprising one or more computers, measurements data collected by a plurality of sensors configured to monitor vibrations associated with a rotating machine, wherein the rotating machine comprises a gas turbine;

    wherein receiving measurements data collected by a plurality of sensors comprises;

    receiving measurements data collected by a plurality of sensors monitoring one or more bearings for a rotor associated with the rotating machine;

    receiving first measurements data collected by one or more sensors configured to monitor a compressor bearing associated with the gas turbine; and

    receiving second measurements data collected by one or more sensors configured to monitor a turbine bearing associated with the gas turbine;

    evaluating, by the controller, the measurements data collected by each of the plurality of sensors;

    determining, by the controller based at least in part upon the evaluation, whether each of the plurality of sensors is operating properly; and

    ignoring, by the controller, measurements data collected from one or more sensors that are not determined to be operating properly;

    determining, by the controller based at least in part upon the measurements data, that a respective amplitude change for at least two of the plurality of sensors exceeds a threshold condition;

    determining, by the controller, that the threshold condition is exceeded for a predetermined period of time;

    obtaining historical information associated with vibration of the rotating machine;

    determining, based at least in part upon a comparison of the historical information to the measurements data, that respective amplitude changes of the at least two sensors are non-repeatable events; and

    identifying, by the controller based at least in part upon determining that the threshold condition is exceeded for a predetermined period of time, an alarm event.

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