Patent ID: 8725448
Filing Date: 2014-05-13
Classification: F23N,G01J

Abstract:
1. A flame detection system for a turbine engine, comprising: at least one infrared sensor that senses infrared radiation within the turbine engine; at least one ultraviolet light sensor that senses ultraviolet light within the turbine engine; at least one processor in communication with the at least one infrared sensor and the ultraviolet light sensor for determining the existence of a lack of flame condition; wherein the at least one processor includes a receiver for receiving signals from the infrared sensor, wherein the at least one processor ignores a steady state signal and analyzes a dynamic signal received from the infrared sensor to determine a lack of flame condition in a combustor of the turbine engine; wherein the at least one processor includes a receiver for receiving signals from the ultraviolet light sensor, wherein the at least one processor analyzes a dynamic signal received from the ultraviolet light sensor to determine a lack of flame condition in a combustor of the turbine engine; wherein the at least one processor receives signals from the infrared sensor and from the ultraviolet sensor within a threshold time period and analyzes the signals to determine whether both the infrared and the ultraviolet light sensors indicate a lack of flame condition in a combustor of a turbine engine; and wherein, if both the infrared sensor and the ultraviolet light sensor indicate that a flame does not exist, the at least one processor sends a signal representing that a flame does not exist in the combustor so that the turbine engine may be shutdown.