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1. WO1996006266 - GAS TURBINE BLADE WITH COOLED PLATFORM

Publication Number WO/1996/006266
Publication Date 29.02.1996
International Application No. PCT/US1995/010342
International Filing Date 14.08.1995
Chapter 2 Demand Filed 15.03.1996
IPC
F01D 5/18 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
12Blades
14Form or construction
18Hollow blades; Heating, heat-insulating, or cooling means on blades
CPC
F01D 5/187
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5Blades; Blade-carrying members
12Blades
14Form or construction
18Hollow blades, ; i.e. blades with cooling or heating channels or cavities
187Convection cooling
F05B 2240/801
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
BINDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
2240Components
80Platforms for stationary or moving blades
801cooled platforms
F05D 2240/81
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2240Components
80Platforms for stationary or moving blades
81Cooled platforms
Applicants
  • WESTINGHOUSE ELECTRIC CORPORATION [US/US]; Westinghouse Building Gateway Center Pittsburgh, PA 15222, US
Inventors
  • MCLAURIN, Leroy, D.; US
  • PEPPERMAN, Barton, M.; US
Agents
  • PANIAN, Michael, G. ; Westinghouse Electric Corporation Law Dept. - IPS 11 Stanwix Street Pittsburgh, PA 15222, US
Priority Data
08/299,16924.08.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) GAS TURBINE BLADE WITH COOLED PLATFORM
(FR) AILETTE DE TURBINE A GAZ A PLATE-FORME REFROIDIE
Abstract
(EN)
A turbine blade (18) has a cooling air flow path specifically directed toward cooling the platform portion (46) of the blade root (44). Two cooling air passages (48, 49) are formed in the blade root platform just below its upper surface. Each passage (48, 49) extends radially outward fron an inlet that receives a flow of cooling air (32) and then extends axially along almost the entire length of the platform (46). Each passage (48, 49) also has an outlet (52, 53) formed in the downstream face (61) of the platform (46) that allows the cooling air (32) to exit the platform (46) and enter the hot gas flow path. The passages (48, 49) are formed in portions of the platform (46) that overhang the shank portion of root.
(FR)
Ailette (18) de turbine dont les conduits de refroidissement par air sont spécifiquement orientés pour refroidir la partie de plate-forme (46) de l'embase (44) dans laquelle sont formés deux passages (48, 49) d'air de refroidissement, juste sous sa surface supérieure. Chaque passage (48, 49) s'étend radialement vers l'extérieur depuis une arrivée d'air de refroidissement (32), puis axialement sur la quasi totalité de la longueur de la partie de plate-forme (46). Chaque passage (48, 49) présente également une sortie (52, 53) pratiquée dans la face aval (61) de la partie de plate-forme (46) pour permettre à l'air de refroidissement (32) de sortir de ladite plate-forme (46) et de passer dans la voie d'écoulement de gaz chauds. Les passages (48, 49) sont pratiqués dans des parties de la plate-forme (46) qui surplombent la portion en forme de tige de l'embase.
Also published as
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