Patent ID: 7500823
Filing Date: 2009-03-10
Classification: F01D,F05D

Abstract:
1. A turbine blade, comprising: a root section; a tip section; a blade leaf having a plurality of coolant ducts through which a coolant flows and having a leading edge with a leading edge region, the coolant ducts extending essentially in a longitudinal direction of the turbine blade and spaced apart from the leading edge; a plurality of outlet ports arranged along at least two rows oriented on the blade leaf essentially parallel to the leading edge; and a plurality of outlet ducts oriented obliquely with respect to the longitudinal direction of the turbine blade so that the coolant flowing out in a root-side subsection of each row possesses a velocity component oriented toward the tip section of the turbine blade and that the coolant flowing out in a tip-side subsection of each row has a velocity component oriented toward the root section, wherein: the outlet ducts are configured with a plurality of transitional points, at which the orientation of the outlet ducts changes, arranged to be offset relative to one another in the longitudinal direction for two adjacent rows; and the transitional points of two outer rows are arranged identically with respect to the longitudinal direction.