METHOD AND DEVICE FOR MEASURING TEMPERATURE OF GAS TURBINE ENGINE OUTPUT GAS Russian patent published in 2023 - IPC G01K13/24 G01K7/02 

FIELD: gas turbine engines.

SUBSTANCE: methods (and devices) for measuring the temperature of a gas flow used in aircraft engine building, power engineering and other areas where gas turbine engines are used. Each thermocouple in the battery of thermocouples generates a signal corresponding to the temperature at a given point in the temperature pattern. The signal enters the encoding module, at the output of which the signal carries the temperature value and signs of a particular thermocouple. Through a single collector, the signal enters the control unit, where it is decoded and analyzed for the value of the maximum allowable or limiting temperature. The processing of the decoded signal makes it possible to determine the maximum allowable or limiting temperature in the gas flow for a specific thermocouple, which gives grounds for creating a control command to reduce the engine operating mode. The thermocouple coordinate allows to determine the zone of inspection of the surface of the flame tube and turbine nozzles for the presence of burnouts or deformation, the number of the nozzle that caused the temperature increase and to be replaced. The implementation of the thermocouple assembly with several hot junctions at different heights taken into account in the encoded signal makes it possible to analyze the temperature pattern based on the height of the junction.

EFFECT: increased reliability and service life of engines due to separate temperature measurement by each thermocouple.

3 cl, 1 dwg