公开(公告)号：US20240309762A1

公开(公告)日：2024-09-19

申请号：US18600026

申请日：2024-03-08

申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.

发明人： Sho Bonkohara ,  Masamitsu OKUZONO

IPC分类号： F01D5/14 ,  F01D5/30

CPC分类号： F01D5/143 ,  F01D5/145 ,  F01D5/3007 ,  F05D2240/305 ,  F05D2240/306 ,  F05D2240/307

摘要： A rotor disk includes a blade root groove into which a blade root of a turbine blade is insertable. The blade root groove includes a first bearing surface, a first disk neck outer curved surface which gradually moves toward a first circumferential side as it goes from an edge on an inner radial side of the first bearing surface toward the inner radial side, and a first disk neck inner curved surface which gradually moves toward a second circumferential side as it goes from a first disk neck position corresponding to an edge on the inner radial side of the first disk neck outer curved surface toward the inner radial side. The first disk neck outer curved surface includes a first curvature changing surface of which a curvature gradually increases from the first disk neck position toward an outer radial side.