Patent ID: 8596976
Filing Date: 2013-12-03
Classification: F01D,F05D

Abstract:
1. A turbine blade comprising: a blade main body that is provided with a plurality of film cooling holes and inside which at least two cavities are independently formed with respect to each other by at least one plate rib provided substantially orthogonal to a center line connecting a leading edge and a trailing edge, in a cross-sectional plane substantially orthogonal to a direction of an axis along which a span of the turbine blade extends; and a hollow insert that is disposed in the cavities of the at least two cavities so as to form a cooling space between an outer circumferential surface of the hollow insert and an inner circumferential surface of the blade main body and that is provided with a plurality of impingement cooling holes, wherein, in at least one of the at least two cavities that are independently formed with respect to each other, part of a cooling medium that has impingement-cooled a ventral side of the inner circumferential surface of the blade main body further impingement-cools a dorsal side of the inner circumferential surface of the blade main body and is then blown out through dorsal-side film cooling holes of the plurality of film cooling holes in the blade main body.