公开(公告)号：US20180200783A1

公开(公告)日：2018-07-19

申请号：US15743909

申请日：2016-09-08

申请人： Mitsubishi Hitachi Power Systems, Ltd.

发明人： Keita TAKAMURA ,  Satoshi HADA ,  Hidekatsu ATSUMI ,  Tomofumi SHINTANI

IPC分类号： B22C9/04 ,  F02C7/18 ,  F01D5/18 ,  B22C9/10 ,  B22D29/04 ,  B22D25/02 ,  B23H9/10 ,  B23H9/14

CPC分类号： B22C9/043 ,  B22C9/04 ,  B22C9/10 ,  B22D25/02 ,  B22D29/00 ,  B22D29/04 ,  B23H9/10 ,  B23H9/14 ,  F01D5/18 ,  F01D5/187 ,  F02C7/00 ,  F02C7/18 ,  F05D2230/21 ,  F05D2240/81

摘要： A blade (50) has a blade, passage (71) extending in a blade height direction (Dwh), a platform passage (81) formed inside a platform (60), and a communication passage (75) leading from an outer surface (93) of a shaft-mounted part (90) through the platform passage (81) to the blade passage (71). An inner surface defining an inflow passage portion (82) of the platform passage (81) includes a shaft-side inner surface (88) that faces a gas path side. The shaft-side inner surface (88) spreads in a direction having more of a component of a blade thickness direction (Dwt) than a component of the blade height direction (Dwh). An inner surface defining the communication passage (75) joins to the shaft-side inner surface (88).