Power plants – Combustion products used as motive fluid – Process
Reexamination Certificate
2005-08-23
2005-08-23
Gartenberg, Ehud (Department: 3746)
Power plants
Combustion products used as motive fluid
Process
C060S785000, C137S494000
Reexamination Certificate
active
06931859
ABSTRACT:
Cooling air to the blades and disks of a gas turbine may be modulated to provide a variable turbine cooling flow. A bellows may be extended by providing a high pressure compressor discharge flow to an interior of the bellows. The bellows may be compressed when the interior of the bellows communicates with ambient pressure air. The extension/compression of the bellows moves an arm over orifices in a cooling air flow path. The pressure inside of the bellows is metered to move the arm over at least one orifice, thereby restricting cooling air flow when the engine is running at low power. The pressure inside of the bellows is metered to move the arm to uncover all of the slots to provide maximum cooling flow when the engine is running at high power. The resulting variable cooling flow system results in less need for cooling air at low powers, thus reducing engine fuel consumption.
REFERENCES:
patent: 3366315 (1968-01-01), Alberani
patent: 3535873 (1970-10-01), Szdlowski
patent: 3814313 (1974-06-01), Beam et al.
patent: 3972181 (1976-08-01), Swayne
patent: 4217755 (1980-08-01), Williams
patent: 4596116 (1986-06-01), Mandet et al.
patent: 5090193 (1992-02-01), Schwarz et al.
patent: 5261228 (1993-11-01), Shuba
patent: 5351473 (1994-10-01), Shuba
patent: 5996331 (1999-12-01), Palmer
patent: 6152685 (2000-11-01), Hagi
Allan Adrian R.
Howe William J.
Morgan Peter L.
Morris Mark C.
Palmer Donald L.
Desmond, Esq. Robert
Gartenberg Ehud
LandOfFree
Variable turbine cooling flow system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Variable turbine cooling flow system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable turbine cooling flow system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3439950