Combustor oscillation attenuation via the control of fuel-supply

Power plants – Combustion products used as motive fluid

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60725, 431114, F02C 926

Patent

active

058097694

ABSTRACT:
Combustion oscillation control in combustion systems using hydrocarbon fuels is provided by acoustically tuning a fuel-delivery line to a desired phase of the combustion oscillations for providing a pulse of a fuel-rich region at the oscillating flame front at each time when the oscillation produced pressure in the combustion chamber is in a low pressure phase. The additional heat release produced by burning such fuel-rich regions during low combustion chamber pressure effectively attenuates the combustion oscillations to a selected value.

REFERENCES:
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patent: 5372008 (1994-12-01), Sood
patent: 5428951 (1995-07-01), Wilson et al.
patent: 5445517 (1995-08-01), Kondou et al.
patent: 5544478 (1996-08-01), Shu et al.
"Convective Heat Transfer in a Gas-Fired Pulsating Combustor", V. I. Hanby, Journal of Engineering for Power, Jan., 1969, pp. 48-52.
"Investigation of Pulsating Combustion in Operation of the GT-100-750-2 Combustion Chambers on Gaseous Fuel", A. A. Tarkanobskii et al, Teploenergetika, vol. 22(6), 1975, pp. 29-32.

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