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1. (CA2261184) COOLED STATIONARY BLADE OF A GAS TURBINE

Office : Canada
Application Number: 2261184 Application Date: 28.04.1998
Publication Number: 2261184 Publication Date: 12.11.1998
Grant Number: Grant Date: 09.07.2002
Publication Kind : C
Prior PCT appl.: Application Number:PCTJP1998001958 ; Publication Number: Click to see the data
IPC:
F01D 9/02
F01D 5/18
F01D 9/04
F02C 7/18
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
D
NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
9
Stators
02
Nozzles; Nozzle boxes; Stator blades; Guide conduits
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
D
NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5
Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
12
Blades
14
Form or construction
18
Hollow blades; Heating, heat-insulating, or cooling means on blades
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
D
NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
9
Stators
02
Nozzles; Nozzle boxes; Stator blades; Guide conduits
04
forming ring or sector
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
C
GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
7
Features, component parts, details or accessories, not provided for in, or of interest apart from, groups F02C1/-F02C6/158; Air intakes for jet-propulsion plants
12
Cooling of plants
16
characterised by cooling medium
18
the medium being gaseous, e.g. air
CPC:
F01D 9/02
F01D 5/187
F05D 2240/10
F05D 2240/81
F05D 2260/22141
Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD.
Inventors:
Priority Data: 9-113845 01.05.1997 JP
Title: (EN) COOLED STATIONARY BLADE OF A GAS TURBINE
(FR) PALE FIXE DE REFROIDISSEMENT DE TURBINE A GAZ
Abstract: front page image
(EN)

Disclosed is a cooled stationary blade assembly for a gas turbine, the
assembly comprising an outer shroud, an inner shroud, a stationary blade,
having a front edge and a rear edge, provided between the outer shroud and
the inner shroud, first steam cooling means provided in an interior of the
stationary blade which receives cooling steam in a first passage adjacent to
the front edge of the stationary blade and discharges cooling steam only
from a last passage adjacent to the rear edge of the stationary blade, and
second steam cooling means provided in the vicinity of an end portion of the
inner shroud. The first steam cooling means and the second steam cooling
means communicate with each other at the first passage and at the last
passage of the stationary blade, with the first steam cooling means
providing a portion of the cooling steam to the second steam cooling means
at the first passage of the stationary blade, and the second steam cooling
means returning the cooling steam to the first steam cooling means at the
last passage of the stationary blade to recover the cooling steam.


Also published as:
EP0911488US6092983WO/1998/050684