Patent ID: 9709448
Date: 2017-07-18
CPC Classifications: F01D,F02C,F23N,G01F,G01K

Claim:
1. A method for actively monitoring gas flow temperature, comprising: placing at least one first acoustic transmitter and at least one first acoustic sensor respectively oriented in a common axial plane in the gas flow path and in a distinct first line-of-sound path relative to each other, the first sensor capable of generating first sensor output signals indicative of first thermoacoustic oscillations; coupling the at least one first transmitter and the at least one first sensor to the controller that is capable of causing the at least one first transmitter to transmit first acoustic signals within the gas flow path and capable of correlating the first sensor output signals time-of-flight with gas flow temperature; processing, via a processor, the first time-of-flight for the first acoustic signals traveling along the first line of sound paths to determine respective gas flow temperature along each respective first line-of-sound path; placing at least one second acoustic transmitter and at least one second acoustic sensor respectively oriented in a common axial plane in the gas flow path downstream of the first acoustic transmitter and sensor, and in a distinct second line-of-sound path relative to each other, the second sensor capable of generating second sensor output signals indicative of second thermoacoustic oscillations; coupling the at least one second transmitter and the at least one second sensor to the controller that is capable of causing the at least one second transmitter to transmit second acoustic signals within the gas flow path and capable of correlating the second sensor output signals time-of-flight with gas flow temperature; processing, via the processor, the second time-of-flight for the second acoustic signals traveling along the second line of sound paths to determine respective gas flow temperature along each respective second line-of-sound path; and interpolating determined respective gas flow temperatures along each respective first and second line-of-sound path to create a volumetric temperature map.