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1. (WO2018164150) COOLING STRUCTURE FOR TURBINE BLADE

Pub. No.:    WO/2018/164150    International Application No.:    PCT/JP2018/008645
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Wed Mar 07 00:59:59 CET 2018
IPC: F01D 5/18
F01D 9/02
F02C 7/18
Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA
川崎重工業株式会社
Inventors: TSURU, Tomoko
都留 智子
ISHIDA, Katsuhiko
石田 克彦
Title: COOLING STRUCTURE FOR TURBINE BLADE
Abstract:
This cooling structure for a turbine blade (1) is provided with: a cooling passage (17) formed between a first blade wall (3) that is curved in a concave shape with respect to a high-temperature gas flow passage (GP) and a second blade wall (5) that is curved in a convex shape; lattice structures (23) formed by superposing, in a lattice shape, a plurality of main ribs provided on both wall surfaces facing the cooling passage; partitioning bodies (27) provided between the lattice structures that are adjacent to each other; a coolant discharge port (25) for externally discharging a cooling medium (CL) inside the cooling passage; and an exposed wall part (29) which is a part of the second blade wall (5), the part extending to the outside of the coolant discharge port (25). In outlet parts of the lattice structures (23) adjacent to each other via the partitioning bodies, a pair of adjacent first ribs (33A) and a pair of adjacent second ribs (33B) are respectively inclined in the opposite directions with respect to the partitioning bodies.