초록 ▼

A steam cooled type gas turbine has a steam chamber unit formed in one unit having a compact structure through which steam, as a cooling medium, is appropriately supplied, used for cooling and recovered. The steam chamber unit (1) formed in one unit has a steam supply passage (31) for leading coolin

A steam cooled type gas turbine has a steam chamber unit formed in one unit having a compact structure through which steam, as a cooling medium, is appropriately supplied, used for cooling and recovered. The steam chamber unit (1) formed in one unit has a steam supply passage (31) for leading cooling steam, a steam connection passage (32) for leading the cooling steam which has cooled a front stage (5) to a subsequent stage (6) and a steam recovery passage (33) for recovering the cooling steam which has cooled a plurality of the stages. The unit further has a heat insulating structural member (8) for insulation of heat from a moving blade (9) and a stationary blade supporting portion (7), both provided in an inner circumferential surface portion of the steam chamber unit. Supply and recovery of steam to and from stationary blades and cooling by steam of stationary blades can be done with a compact structure having a single consecutive cooling steam passage so that the stationary blades can be cooled efficiently.

대표청구항 ▼

[ What is claimed is:] [1.]1. A steam cooled gas turbine, comprising:a plurality of stages of stationary blades and moving blades between said stationary blades, said stationary blades including a forward stage and a subsequent stage and said moving blades being located between said forward stage an

[ What is claimed is:] [1.]1. A steam cooled gas turbine, comprising:a plurality of stages of stationary blades and moving blades between said stationary blades, said stationary blades including a forward stage and a subsequent stage and said moving blades being located between said forward stage and said subsequent stage;a unitary steam chamber unit surrounding said stationary blades and moving blades, said steam chamber unit comprising a steam supply passage therein for conducting cooling steam toward a stationary blade of said forward stage, a steam connection passage for conducting the cooling steam toward a stationary blade of said subsequent stage, and a steam recovery passage for recovering the cooling steam which has been supplied into said stationary blade of said subsequent stage, and said unitary steam chamber unit having a heat insulating structural member arranged radially outward of said moving blades and a stationary blade supporting portion arranged so as to confront an outer circumference of at least one of said stationary blades.