Smart radiation thermometry system for real time gas turbine control and prognosis

摘要

A smart radiation thermometry system including a turbine component is provided. The smart radiation thermometry system includes an optical imaging sub-system configured to receive a continuous broad wavelength band radiation signal emitted by the turbine component. The thermometry system also includes a wavelength splitting sub-system in optical communication with the optical transmission sub-system, wherein the wavelength splitting sub-system receives the continuous broad wavelength band radiation signal, and splits the radiation signal into multiple sub-wavelength band signals. The thermometry system further includes at least one detector array in optical communication with the wavelength-splitting sub-system, wherein the at least one detector array receives the multiple sub-wavelength band signals, and outputs respective analog voltage signals for each of the signals. The thermometry system further includes at least one high-speed multi-channel analog-to-digital converter (ADC) electrically coupled to the at least one detector array, wherein the ADC digitizes respective analog voltage signals and outputs digital voltage signals. The thermometry system also includes at least one smart real time processing sub-system electrically coupled to the at least one detector array via the at least one high-speed multi-channel ADC. The at least one smart real time processing sub-system calculates temperature and emissivity of the turbine component based upon a computed radiance temperature, reflection correction and multi-wavelength algorithm. The smart real time processing sub-system also transmits data indicative of the temperature, emissivity and other plurality of parameters within a pre-determined time period to a communication unit. The smart real time processing sub-system also outputs emergency alarm signals and controls either directly or via a controller one or more actuators coupled to the gas turbine based upon the data to ensure optimum operation of the gas turbine within safe operating limits.