Power plants – Combustion products used as motive fluid – Multiple fluid-operated motors
Patent
1990-10-01
1992-10-13
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
Multiple fluid-operated motors
415107, F02C 700
Patent
active
051540487
ABSTRACT:
An industrial gas turbine engine includes in serial flow relationship a first compressor, a second compressor, a combustor, a first turbine, and a second turbine. The first compressor and the second turbine are fixedly joined together by a first shaft, and a turbine rear frame having a hub is disposed downstream of the second turbine for rotatably supporting the first shaft. A balance piston is fixedly joined to the first shaft, and means for channeling a fluid first to the balance piston for balancing thrust force on the first shaft and then to the turbine rear frame for heating the hub are provided. The apparatus is effective for carrying out a method including channeling a fluid first to the balance piston for thrust balancing the first shaft and then channeling the fluid to the turbine rear frame for heating the frame hub.
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Howes Neil
McGreehan William F.
Ponziani Robert L.
Casaregola Louis J.
Davidson James P.
General Electric Company
Squillaro Jerome C.
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