Method and apparatus to detect onset of combustor hardware...

Details Method and apparatus to detect onset of combustor hardware... Method and apparatus to detect onset of combustor hardware...

2005-09-16

2008-10-28

Kramer, Devon (Department: 3746)

Power plants

Combustion products used as motive fluid

Process

C060S039091

Reexamination Certificate

active

07441411

ABSTRACT:
A method for determining when a combustor is experiencing hardware damage includes sensing acoustic vibrations of a plurality of combustor cans, determining a center frequency for each acoustic tone of the sensed acoustic vibrations within a predetermined frequency range, and indicating an alarm when a center frequency of one or more of the combustor cans changes in a different manner compared to a representative center frequency of the plurality of combustor cans.

REFERENCES:
patent: 4644783 (1987-02-01), Roberts et al.
patent: 6461144 (2002-10-01), Gutmark et al.
patent: 6591225 (2003-07-01), Adelman et al.
patent: 6634457 (2003-10-01), Paschereit et al.
patent: 2005/0144955 (2005-07-01), Handelsman et al.

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