Power plants – Combustion products used as motive fluid – For nominal other than power plant output feature
Reexamination Certificate
2007-02-27
2010-11-02
Rodríguez, William H (Department: 3741)
Power plants
Combustion products used as motive fluid
For nominal other than power plant output feature
C060S039230, C060S806000, C060S782000, C060S795000
Reexamination Certificate
active
07823390
ABSTRACT:
A system is provided for directing air from plural compressor ports to provide cooling and/or sealing air to an associated turbine site. A first flow from a pressure stage of the compressor has a first pressure and temperature. A second flow from another pressure stage of the compressor has a second pressure and temperature. The first and second pressures/temperatures are different. An ejector has two inlets for receiving the first and second flows, and output for combining the first and second flows into a third flow. The pressure and temperature of the third flow are different from the first and second pressures and temperatures. A bypass line is connected between the first flow and the third flow, and provides a bypass flow. A mixer combines the bypass flow and the third flow into a fourth flow. The fourth flow has a pressure and temperature intermediate the pressure and temperature of the bypass flow and the third flow. The mixer comprises inner and outer sections. The inner section is generally cylindrical in cross section and has a plurality of holes therein. The angle between the direction of the bypass flow and the direction of the third flow, when the bypass flow meets the third flow in the mixer, is less than about 90 degrees.
REFERENCES:
patent: 3371618 (1968-03-01), Chambers
patent: 3625820 (1971-12-01), Gluntz et al.
patent: 5018946 (1991-05-01), Breckner et al.
patent: 6550253 (2003-04-01), Mortzheim et al.
Ball, Jr. David Wesley
Eluripati Ravi Praveen S.
Whaling Kenneth Neil
Zhang Hua
Cusick Ernest G.
General Electric Company
Kim Craig
Landgraff Frank A.
Pemrick James W.
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