TURBINE STATOR BLADE, SUPPORT RING AND GAS TURBINE

摘要

PROBLEM TO BE SOLVED: To provide a turbine stator blade that can further suppress combustion gas from leaking from a main flow path to a back surface of an inner shroud, and can suppress components arranged on the back surface of the inner shroud or a welded part from being damaged or cracked, due to the leakage of high-temperature and high-pressure combustion gas.

SOLUTION: The turbine stator blade includes: an outer shroud 8a that configures an outer wall; the inner shrouds 8b that are disposed proximally in a circumferential direction of the turbine and configures an inner wall of the main flow path; a blade body 8c that protrudes from a surface of the inner shroud 8b and defines the flow of the combustion gas flowing from upstream to downstream of the main flow path; a retainer 8d that protrudes from an upstream back surface of the inner shroud 8b and extends in the circumferential direction of the turbine; and a rib 8e that protrudes from a downstream back surface of the inner shroud 8b and extends in the circumferential direction of the turbine.

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