Patent ID: 6230483
Filing Date: 2001-05-15
Classification: F01D,F05D

Abstract:
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.