SELF VALIDATING GAS TURBINE ENGINE FLAME DETECTION SYSTEM USING DUEL OPTICAL VERIFICATION

摘要

A self validating flame detection system (10) for a turbine engine (12) configured to determine whether a flame exists in a turbine engine combustor (16) is disclosed. The self validating flame detection system (10) may include two different types of flame detection sensors (18) to reduce the risk of false positive signals. In at least one embodiment, the flame detection system (10) may include one or more infrared sensors (20) that sense infrared radiation within the combustor (16) of the turbine engine (12) and one or more ultraviolet light sensors (22) that sense ultraviolet light within the combustor (16) of the turbine engine (12). The flame detection system (10) may include a processor (24) configured to ignore the steady state infrared signal generated and instead analyze the dynamic infrared signal. The processor (24) may be configured to determine whether both types of sensors (18) indicate a flame out condition so that a false alarm does not occur.