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Title: Temperature measurement in a gas turbine engine combustor

Patent ·
OSTI ID:1444108

A method and system for determining a temperature of a working gas passing through a passage to a turbine section of a gas turbine engine. The method includes identifying an acoustic frequency at a first location in the engine upstream from the turbine section, and using the acoustic frequency for determining a first temperature value at the first location that is directly proportional to the acoustic frequency and a calculated constant value. A second temperature of the working gas is determined at a second location in the engine and, using the second temperature, a back calculation is performed to determine a temperature value for the working gas at the first location. The first temperature value is compared to the back calculated temperature value to change the calculated constant value to a recalculated constant value. Subsequent first temperature values at the first location may be determined based on the recalculated constant value.

Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-05NT42644
Assignee:
SIEMENS ENERGY, INC. (Orlando, FL)
Patent Number(s):
9,976,915
Application Number:
13/804,132
OSTI ID:
1444108
Resource Relation:
Patent File Date: 2013 Mar 14
Country of Publication:
United States
Language:
English

References (16)

Temperature-Sensing and/or Sound Velocity-Measuring Device patent January 1952
Apparatus for ignition diagnosis in a combustion turbine patent December 1992
Acoustic pyrometer patent May 2002
Method and system for temperature estimation of gas turbine combustion cans patent October 2005
Temperature and pressure sensor using four wave mixing technique patent October 2009
Apparatus and methods for acoustically determining internal characteristics of an engine and the like patent July 2010
Method for testing gas turbine engines patent April 2012
Estimating Combustor Flame Temperature Based on Frequency of Combustor Dynamics Transverse Mode patent-application December 2005
Plant temperature control system patent-application June 2006
Method and System for Determining Lean Blow Out Condition for Gas Turbine Combustion Cans patent-application November 2006
Method and apparatus to detect onset of combustor hardware damage patent-application March 2007
High Temperature Pressure Sensor Element, Particularly for Measuring Pressures Inside Jet Engines, Method for the Production Thereof and Component for Jet Engines patent-application July 2009
Gas turbine system and method patent-application October 2009
Attachment Structure of Combustion Oscillation Detecting Device patent-application June 2010
Estimating Pre-Turbine Exhaust Temperatures patent-application June 2011
The Measurement of Performance of Combustors Using Passive Acoustic Methods conference June 2012

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