Ignition detecting system and method for gas turbine

Details Ignition detecting system and method for gas turbine Ignition detecting system and method for gas turbine

2005-08-19

2009-06-16

Casaregola, Louis J (Department: 3741)

Power plants

Combustion products used as motive fluid

Process

C060S779000, C060S786000, C060S803000

Reexamination Certificate

active

07546741

ABSTRACT:
A gas turbine which can detect ignition in a combustor regardless of startup conditions of the gas turbine, such as the hot startup or the cold startup. An ignition detecting method for the gas turbine comprises the steps of calculating a difference between the exhaust temperature detected at a particular time before outputting of an ignition command for a combustor and the exhaust temperature detected after the outputting of the ignition command, and determining that the combustor is ignited, when the calculated difference is not less than a predetermined value. As an alternative, the method includes a step of determining that the combustor is ignited, when a change amount or rate of the exhaust temperature exceeds a predetermined value in a predetermined period from the outputting time of the ignition command.

REFERENCES:
patent: 6274945 (2001-08-01), Gilbreth et al.
patent: 6766647 (2004-07-01), Hartzheim
patent: 59-15638 (1984-01-01), None

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