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.
- Issue Date:
- 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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