Patent ID: 7967563
Filing Date: 2011-06-28
Classification: F01D,F05D

Abstract:
1. An air cooled turbine blade comprising: a leading edge cooling supply channel extending along a leading edge region from a root to a tip of the blade; a tip section cooling channel connected to the leading edge supply channel such that cooling air from the leading edge supply channel flows into the tip section cooling channel; an aft flowing serpentine flow cooling circuit with a last leg located adjacent to the trailing edge region of the blade; a row of exit cooling holes or slots extending along a trailing edge region of the blade and connected to the last leg of the serpentine flow circuit; and, a re-supply hole connecting the tip section cooling channel to a second-to-a-last leg of the serpentine flow circuit such that cooling air flows through the leading edge supply channel, into the tip section cooling channel, and then joins a cooling air flow in the serpentine flow cooling circuit.