High Pressure Compressor Rotor Thermal Conditioning Using Conditioned Compressor Air

Patent metadata

Field	Value
Publication number	US-2016237903-A1
Application number	US-201514621444-A
Country	US
Kind code	A1
Filing date	Feb 13, 2015
Priority date	Feb 13, 2015
Publication date	Aug 18, 2016
Grant date	—

Abstract

A gas turbine engine comprises a compressor including a disk and a blade. A turbine rotor has a disk and a blade. Turbine conditioning air is supplied to the turbine rotor. The turbine conditioning air passes across the disk of the compressor to condition the disk. A method of operating a gas turbine engine is also disclosed.

First claim

1 . A gas turbine engine comprising:
a compressor including a disk and a blade; a turbine rotor having a disk and a blade; turbine conditioning air supplied to said turbine rotor; and said turbine conditioning air passing across said disk of said compressor to condition said disk.

2 . The gas turbine engine as set forth in claim 1 , wherein a tie shaft connects said compressor disk and said turbine rotor, and said turbine conditioning air passing along an axial length of said tie shaft.

3 . The gas turbine engine as set forth in claim 2 , wherein a drive shaft extending radially inwardly of said tie shaft and an inner cooling air passing radially between an outer peripheral surface of said drive shaft and an inner peripheral surface of said tie shaft.

4 . The gas turbine engine as set forth in claim 3 , wherein said turbine conditioning air is received from a compressor air supply.

5 . The gas turbine engine as set forth in claim 4 , wherein said compressor air supply passes across a tangential on board injector before passing radially inwardly.

6 . The gas turbine engine as set forth in claim 5 , wherein said air leaving said tangential onboard injector also has a portion passing radially outwardly to cool said disk of said turbine rotor.

7 . The gas turbine engine as set forth in claim 2 , wherein said turbine conditioning air is received from a compressor air supply.

8 . The gas turbine engine as set forth in claim 1 , wherein a fan rotor is positioned upstream of said compressor, said fan rotor delivering air into a bypass duct, and toward said compressor as core air, and said fan rotor being driven by a second turbine rotor through a gear reduction.

9 . The gas turbine engine as set forth in claim 1 , wherein said turbine conditioning air is received from a compressor air supply.

10 . The gas turbine engine as set forth in claim 9 , wherein said air compressor supply passes across a tangential on board injector before passing radially inwardly.

11 . A method of operating a gas turbine engine comprising the steps of:
supplying a turbine conditioning air to a turbine rotor; and passing said turbine conditioning air across a disk of a compressor to condition the disk of the compressor.

12 . The method as set forth in claim 11 , and further providing a tie shaft connecting said disk of said compressor to said turbine rotor, and said turbine conditioning air passing along said tie shaft before passing across said disk of said compressor.

13 . The method as set forth in claim 12 , wherein an inner cooling air is supplied between an outer peripheral surface of a drive shaft which is radially inwardly of said tie shaft, and an inner peripheral surface of said tie shaft, such that said turbine conditioning air is cooled by said inner cooling air as said turbine conditioning air passes along the axial length of said tie shaft.

14 . The method as set forth in claim 13 , wherein said turbine conditioning air is received from a compressor air supply.

15 . The method as set forth in claim 14 , wherein said air compressor supply passes across a tangential on board injector before passing radially inwardly.

16 . The method as set forth in claim 15 , wherein said air leaving said tangential onboard injector also has a portion passing radially outwardly to cool said disk of said turbine rotor.

17 . The method as set forth in claim 12 , wherein said turbine conditioning air is received from a compressor air supply.

18 . The method as set forth in claim 11 , wherein a fan rotor is positioned upstream of said compressor, said fan rotor delivering air into a bypass duct, and toward said compressor as core air, and said fan rotor being driven by a second turbine rotor through a gear reduction.

19 . The method as set forth in claim 11 , wherein said turbine conditioning air is received from a compressor air supply.

20 . The method as set forth in claim 19 , wherein said air compressor supply passes across a tangential on board injector before passing radially inwardly.

Assignees

• United Technologies Corp

Inventors

• Hiester Paul J
• Forcier Matthew P

Classifications

• F02C3/04

  having a turbine driving a compressor (power transmission arrangements F02C7/36; control of working fluid flow F02C9/16) · CPC title

• F02C7/18 Primary

  the medium being gaseous, e.g. air {(F02C7/125 takes precedence)} · CPC title

• F01D5/081 Primary

  Cooling fluid being directed on the side of the rotor disc or at the roots of the blades (F01D5/087 takes precedence) · CPC title

• F02C6/08

  the gas being bled from the gas-turbine compressor · CPC title

• F01D25/08

  Cooling (of machines or engines in general F01P); Heating; Heat-insulation (of blade-carrying members, of blades F01D5/00) · CPC title