Power plants – Combustion products used as motive fluid – Combustion products generator
Reexamination Certificate
2004-07-02
2008-12-16
Kramer, Devon (Department: 3746)
Power plants
Combustion products used as motive fluid
Combustion products generator
C060S734000
Reexamination Certificate
active
07464552
ABSTRACT:
Under certain conditions, the fuel delivery system can contribute to the formation of strong dynamic pressures in the combustor of a turbine engine. Embodiments of the invention provide a system for dynamically stiffening the fuel supply passage to suppress damaging combustion dynamics. To that end, a Helmholtz resonator can be placed along and in branched relation to the fuel supply passage. The resonator can produce the effect of adding a pressure release opening at a selected location in the fuel line, causing a shift in the fuel line pressure wave pattern that blocks fuel flow fluctuations at the outlet of the fuel passage at the frequency of the oscillation. The pressure wave shift results in a shifting of the volume velocity wave pattern. Ideally, the resonator can be positioned along the flow path such that the volume velocity of the fuel at the fuel passage exit is minimized.
REFERENCES:
patent: 3987633 (1976-10-01), Ford, Jr.
patent: 4173122 (1979-11-01), Wilkinson
patent: 4546733 (1985-10-01), Fukami et al.
patent: 5123835 (1992-06-01), Richards et al.
patent: 5353598 (1994-10-01), Huck et al.
patent: 5373695 (1994-12-01), Aigner et al.
patent: 5791889 (1998-08-01), Gemmen et al.
patent: 5809769 (1998-09-01), Richards et al.
patent: 6058709 (2000-05-01), Richards et al.
patent: 6082108 (2000-07-01), Scheidl et al.
patent: 6205764 (2001-03-01), Hermann et al.
patent: 6370879 (2002-04-01), Stalder et al.
patent: 6430933 (2002-08-01), Keller
patent: 6530221 (2003-03-01), Sattinger et al.
patent: 6546729 (2003-04-01), Hellat et al.
patent: 6634457 (2003-10-01), Paschereit et al.
patent: 2 381 832 (2003-05-01), None
patent: 09004541 (1997-01-01), None
patent: WO 93/10401 (1993-05-01), None
Dwivedi Vikansha
Kramer Devon
Siemens Energy Inc.
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