Patent ID: 8926262
Filing Date: 2015-01-06
Classification: F01D,F05D,F16J,Y02T

Abstract:
1. A CMC turbine stator blade comprising: a blade, formed of a ceramic matrix composite material; and a band, formed of a ceramic matrix composite material or a metallic material, and supporting the blade, wherein the blade and the band are bonded to each other, the blade includes a first fitting portion to which the band is fitted at an outside thereof, and the band includes a second fitting portion to which the first fitting portion is fitted at an inside thereof; and a flexible wire disposed between the first fitting portion and the second fitting portion so as to fix the blade and the band to each other, wherein a first groove is formed in the outer peripheral surface of the first fitting portion to extend in a front-to-rear direction of the blade, a second groove is formed in the inner peripheral surface of the second fitting portion to extend along the first groove, and the wire is disposed between the first groove and the second groove, wherein the first groove s formed the outer peripheral surface of the first fitting portion at the belly and back sides of the blade, wherein the second groove is formed in the inner peripheral surface of the second fitting portion at the belly and back sides of the blade, wherein a first cutout portion is formed at a front edge of the second fitting portion, wherein a second cutout portion is formed at the rear edge part of the second fitting portion, and wherein both ends of the wire protrude from one of the first cutout portion and the second cutout portion, and an intermediate portion of the wire is folded back at the other of the first cutout portion and the second cutout portion.