F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
60/133, 60/185
F02C 7/12 (2006.01) F02C 7/14 (2006.01) F02C 7/18 (2006.01) F28D 7/16 (2006.01) F28D 9/00 (2006.01) F28F 1/16 (2006.01) F28F 13/06 (2006.01)
Patent
CA 1095271
13DV-7173 ABSTRACT OF THE DISCLOSURE A gas turbine engine having a compressor and an air- cooled turbine is provided with a cooling system for decreas- ing the temperature of the turbine cooling air. A compact heat exchanger, rotatable with the compressor, receives a portion of the pressurized air which is bled from the com- pressor. Relatively cool engine lubrication oil is pumped through the heat exchanger into heat exchanger relation- ship with the pressurized air, thereby cooling the air and heating the lubrication oil. The cooled air is then routed to and circulated through the turbine blades to provide improved internal cooling thereof. The heated lubrication oil is collected from the heat exchanger and routed to a second heat exchanger wherein it is placed in heat exchange relationship with engine fuel to recover the heat extracted from the compressor bleed air and to return the heat to the engine operating cycle. The cooling system is designed to contain the lubricant in the unlikely event of a leak de- veloping in the heat exchanger. Incorporation of the heat exchanger of the present invention into a gas turbine engine permits a reduction in the quantity of compressor air required for turbine rotor blade cooling and, thus, provides an im- provement in engine performance.
306143
Andersen Richard H.
Corsmeier Robert J.
Lenahan Dean T.
Rauf James P.
Company General Electric
Eckersley Raymond A.
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