Non-intrusive measurement of hot gas temperature in a gas turbine engine

Title: Non-intrusive measurement of hot gas temperature in a gas turbine engine

A method and apparatus for operating a gas turbine engine including determining a temperature of a working gas at a predetermined axial location within the engine. An acoustic signal is encoded with a distinct signature defined by a set of predetermined frequencies transmitted as a non-broadband signal. Acoustic signals are transmitted from an acoustic transmitter located at a predetermined axial location along the flow path of the gas turbine engine. A received signal is compared to one or more transmitted signals to identify a similarity of the received signal to a transmitted signal to identify a transmission time for the received signal. A time-of-flight is determined for the signal and the time-of-flight for the signal is processed to determine a temperature in a region of the predetermined axial location.

Inventors:: DeSilva, Upul P.; Claussen, Heiko; Yan, Michelle Xiaohong; Rosca, Justinian; Ulerich, Nancy H.

Issue Date:: 2016-09-27

OSTI Identifier:: 1326807

Assignee:: SIEMENS ENERGY, INC. (Orlando, FL) NETL

Patent Number(s):: 9,453,784

Application Number:: 14/017,386

Contract Number:: FC26-05NT42644

Resource Relation:: Patent File Date: 2013 Sep 04

Research Org:: SIEMENS ENERGY, INC. Orlando, FL (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION

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Other works cited in this record:

Real-time monitoring on boiler combustion based on acoustic measurement
conference, June 2006

Shen, G.Q.; An, L.S.; Jiang, G.S.
2006 IEEE Power India Conference
DOI: 10.1109/POWERI.2006.1632489

The application of image processing to acoustic pyrometry
conference, August 2002

Kleppe, J.A.; Maskaly, J.; Beam, G.
Proceedings of 3rd IEEE International Conference on Image Processing, Vol. 2, p. 657-659
DOI: 10.1109/ICIP.1996.560963

Effects of acoustic source and filtering on time-of-flight measurements
journal, August 2009

Srinivasan, K.; Sundararajan, T.; Narayanan, S.
Applied Acoustics, Vol. 70, Issue 8, p. 1061-1072
DOI: 10.1016/j.apacoust.2009.02.008

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