Dual cooled shroud
AssigneeGeneral Electric Company
InventorsGary C. Liotta, Paul J. Acquaviva
Life of this patent
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Abstract
A turbine shroud includes a panel having a forward hook and an aft hook spaced therefrom. A primary cooling circuit extends through the panel adjacent the forward hook, and has a primary inlet for receiving primary air at a first pressure, and a primary outlet for discharging the primary air. A secondary cooling circuit extends through the panel adjacent the aft hook independently of the primary circuit. The secondary circuit includes a secondary inlet for receiving secondary air at a second pressure different than the first pressure, and a secondary outlet for discharging the secondary air. The dual cooled shroud accommodates differential gas pressure through the turbine.
Claims13
A shroud for providing a flowpath boundary for hot combustion gases in a turbine of a gas turbine engine comprising:
- a panel having a forward hook and an aft hook spaced therefrom;
- means for channeling primary air at a first pressure through a portion of said panel;
- and
- means for independently channeling secondary air at a different pressure through another portion of said panel.
A method of cooling a shroud providing a flowpath boundary for hot combustion gases in a turbine of a gas turbine engine comprising:
- channeling primary air at a first pressure through a portion of said shroud;
- and
- independently channeling secondary air at a different second pressure through another portion of said shroud.
A shroud for providing a flowpath boundary for hot combustion gases in a turbine of a gas turbine engine comprising:
- a panel having a forward hook and an aft hook spaced therefrom;
- a primary cooling circuit extending through said panel adjacent said forward hook, and having a primary inlet for receiving primary air at a first pressure, and a primary outlet for discharging said primary air;
- and
- a secondary cooling circuit extending through said panel adjacent said aft hook independently of said primary circuit, and having a secondary inlet for receiving secondary air at a second pressure different than said first pressure, and a secondary outlet for discharging said secondary air.
Dependencies are inferred from the claim text.