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TECHNICAL PAPERS: Gas Turbines: Controls, Diagnostics, and Instrumentation

Flame Ionization Sensor Integrated Into a Gas Turbine Fuel Nozzle

[+] Author and Article Information
Kelly Benson

Woodward Industrial Controls, Ft. Collins, CO 80525e-mail: kbenso@woodward.com

Jimmy D. Thornton, Douglas L. Straub, E. David Huckaby, Geo. A. Richards

U.S. Department of Energy, National Energy Technology Laboratory, Morgantown, WV 26507

J. Eng. Gas Turbines Power 127(1), 42-48 (Feb 09, 2005) (7 pages) doi:10.1115/1.1788686 History: Received October 01, 2002; Revised March 01, 2003; Online February 09, 2005
Copyright © 2005 by ASME
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References

Figures

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Lean premix fuel nozzle with CCADS electrode on the fuel injector center-body
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Illustrates the electric flux lines from the guard and sense electrodes
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Schematic of Woodward prototype fuel injector with CCADS
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Front view of Woodward prototype fuel injector
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Schematic of CCADS tip for prototype fuel injector center body
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2D electrostatic simulation potential gradient and flux lines. Flux lines are shown with arrows, potential lines solid. Values from 0 V at ground to 15 V at the electrodes.
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Schematic of pressurized combustion test rig
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Time series data showing the dynamic pressure and the measured CCADS current. (A) Condition A, ϕ=0.59, (B) Condition B, ϕ=0.65, (C) Condition C, ϕ=0.7 (see Table 1).
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Frequency spectrum of the dynamic pressure, sense current and guard current. (A) Condition A, ϕ=0.59, (B) Condition B, ϕ=0.65, (C) Condition C, ϕ=0.7 (see Table 1).
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Average guard current computed from the 60 ms time series data shown in Fig. 8

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