Turbine vanes with airfoil-proximate cooling seam

Details Turbine vanes with airfoil-proximate cooling seam Turbine vanes with airfoil-proximate cooling seam

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 9/04 (2006.01) F01D 5/18 (2006.01) F01D 5/22 (2006.01)

Patent

CA 2594585

Aspects of the invention relate to a turbine vane (30) in which the inner and outer platforms (52, 54) are located substantially entirely on either the pressure side (36) or the suction side (38) of the airfoil (32). When a plurality of such vanes (30) are installed in the turbine, a seam (78) is formed by the circumferential end (56) of the inner and outer platforms (52, 54) and a portion of the airfoil (32) of a neighboring vane (30). During engine operation, a high pressure coolant (82) is supplied to at least one of the platforms (52, 54). The coolant (82) can leak through the seam (78). Because the seam (78) is located proximate the airfoil (32), the coolant leakage through the seam (78) can be productively used to cool the transition region (86) between the vane platforms (52, 54) and the airfoil (32). In addition to such cooling benefits, aspects of the invention can result in a potential increase in engine efficiency as well as component life.

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