Patent ID: 6926499
Filing Date: 2005-08-09
Classification: F01D,Y02T

Abstract:
1. A thin-walled lightweight cooled turbine blade comprising: a front blade portion constituting a front portion of the blade; a rear blade portion constituting a rear portion of the blade; and a middle blade portion located between the front blade portion and the rear blade portion and constituting an intermediate portion of the blade, wherein the front blade portion is comprised of front cooling air passages that introduced cooling air into the interior thereof and front film cooling holes for blowing out the cooling air from the front cooling air passages to back and belly sides of the blade; the middle blade portion is a solid structure; the belly side of the middle blade portion forms a recess portion towards the back side of the middle blade portion; and high-temperature gas flowing on the belly side of the blade branches once into two flows to the rear edge portion and along the belly side, and these branched high-temperature gas flows are merged again at the rear edge portion, thereby forming a separation region.