US 12,292,338 B2
Turbine inlet temperature calculation using acoustics
Joshua S. McConkey, Orlando, FL (US); Tao Cui, Princeton Junction, NJ (US); and Zainul Momin, Austin, TX (US)
Assigned to SIEMENS ENERGY, INC., Orlando, FL (US)
Appl. No. 17/772,170
Filed by Siemens Energy, Inc., Orlando, FL (US)
PCT Filed Dec. 19, 2019, PCT No. PCT/US2019/067332
§ 371(c)(1), (2) Date Apr. 27, 2022,
PCT Pub. No. WO2021/126196, PCT Pub. Date Jun. 24, 2021.
Prior Publication US 2022/0381626 A1, Dec. 1, 2022
Int. Cl. G01K 11/26 (2006.01); G01K 13/024 (2021.01)
CPC G01K 11/26 (2013.01) [G01K 13/024 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A method of determining a turbine inlet temperature for a gas turbine engine with a computer system, the method comprising:
measuring pressure changes within a combustion section of the gas turbine engine during operation of the gas turbine engine to produce pressure versus time data;
extracting a resonant frequency from the pressure versus time data; and
calculating the turbine inlet temperature based solely on the resonant frequency and at least one constant,
wherein prior to the calculating step, the computer system performs at least one calibration step utilizing a calibration inlet temperature to solve for the at least one constant in an equation that uses the resonant frequency and the calibration turbine inlet temperature to solve for the at least one constant.