Impingement cooling of gas turbine blades or vanes

F - Mech Eng,Light,Heat,Weapons – 01 – D

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F01D 5/18 (2006.01)

Patent

CA 2480393

A turbine blade or vane (1) comprises an impingement tube (4) located gener~ally in a radial direction within the blade or vane aerofoil, the impingement tube comprising two parts (4a, 4b), extending into the blade or vane from opposite radial ends thereof and locating against a specially formed rib (51) which extends generally chordwise around the leading edge (2) of the aerofoil.

Une pale ou une ailette de turbine (1) comprend un tube de refroidissement par impact de jet (4) situé généralement dans la direction radiale du profil aérodynamique de la pale ou l'ailette. Ce tube de refroidissement par impact de jet comprend deux parties (4a, 4b) qui s'étendent dans la pale ou l'ailette depuis ses extrémités radiales opposées, et qui sont placées contre une nervure spécifiquement formée (5?1¿) qui s'étend généralement en corde autour du bord d'attaque (2) du profil aérodynamique.

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