(19)
(11) EP 1 746 254 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.03.2010 Bulletin 2010/10

(43) Date of publication A2:
24.01.2007 Bulletin 2007/04

(21) Application number: 06253774.1

(22) Date of filing: 19.07.2006
(51) International Patent Classification (IPC): 
F01D 11/08(2006.01)
F01D 9/04(2006.01)
 F01D 25/12(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 19.07.2005 US 183922
19.07.2005 US 183741
20.07.2005 US 184843

(71) Applicant: Pratt & Whitney Canada Corp.
Longueuil, QC J4G 1A1 (CA)

(72) Inventors:
  • Durocher, Eric
    Quebec J0L 2R0 (CA)
  • Farah, Assaf
    Quebec J5Z 1Y2 (CA)

(74) Representative: Leckey, David Herbert 
Dehns St Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) Apparatus and method for cooling a turbine shroud segment and vane outer shroud


(57) A cooling arrangement in a turbine section of gas turbine engines is used to direct cooling air within shroud segment platforms (44) for cooling the turbine shroud (32) while forming substantially straight cooling air streams for impingement cooling on a turbine vane outer shroud (38).







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