×

System and method for detecting combustion hardware damage

  • US 8,990,026 B2
  • Filed: 01/03/2012
  • Issued: 03/24/2015
  • Est. Priority Date: 01/03/2012
  • Status: Active Grant
First Claim
Patent Images

1. A power generation plant comprising:

  • a plurality of combustor cans;

    one or more sensors configured to measure acoustic vibration data from the plurality of combustor cans; and

    a controller comprising a processor, the processor programmed to;

    determine, for each of the plurality of combustor cans based on the acoustic vibration data, a frequency of a dominant tone at a plurality of predefined time intervals, the dominant tone being a frequency where a highest amount of energy lies;

    identify, for each combustor can at each of the predefined time intervals, which of a plurality of sub frequency ranges the dominant tone falls within;

    identify a dominant sub frequency range as one of the plurality of sub frequency ranges into which the greatest number of dominant tones falls for all combustor cans throughout the plurality of predefined time intervals; and

    determine a degradation status of at least one of the plurality of combustor cans based on a number of the predefined time intervals for which the dominant tone of the at least one combustor can is not within the dominant sub frequency range.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×