Patent ID: 7121787
Filing Date: 2006-10-17
Classification: F01D,F05D

Abstract:
1. An air-cooled nozzle for disposition in the hot gas path of a turbine comprising: inner and outer platforms with an airfoil extending therebetween, said airfoil having opposite pressure and suction sides and an air-cooled trailing edge region having a trailing edge; a plurality of ribs in said trailing edge region extending between said opposite sides and spaced one from the other in a generally radial direction between said platforms defining a plurality of generally axially extending radially spaced flow channels for directing cooling air generally axially toward said trailing edge; a plurality of pins extending between said opposite sides of said airfoil at locations spaced axially downstream from said ribs and spaced radially from one another for impingement by the cooling air exiting the channels; and a plenum located generally axially between said ribs and said pins, and a plurality of film cooling holes in the pressure side of said airfoil in communication with said plenum, whereby cooling air is enabled for flow through said holes and internally within the trailing edge region about said pins.