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1. WO2016151234 - CERAMIC CORE FOR A MULTI-CAVITY TURBINE BLADE

Publication Number WO/2016/151234
Publication Date 29.09.2016
International Application No. PCT/FR2016/050628
International Filing Date 22.03.2016
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
B22C 9/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
CFOUNDRY MOULDING
9Moulds or cores; Moulding processes
02Sand moulds or like moulds for shaped castings
04Use of lost patterns
B22C 9/10 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
CFOUNDRY MOULDING
9Moulds or cores; Moulding processes
10Cores; Manufacture or installation of cores
CPC
B22C 9/04
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
CFOUNDRY MOULDING
9Moulds or cores
02Sand moulds or like moulds for shaped castings
04Use of lost patterns
B22C 9/10
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
CFOUNDRY MOULDING
9Moulds or cores
10Cores; Manufacture or installation of cores
F01D 5/18
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
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
F01D 5/284
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
28Selecting particular materials; ; Particular measures relating thereto;; Measures against erosion or corrosion
284Selection of ceramic materials
F05D 2230/21
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
2230Manufacture
20essentially without removing material
21by casting
Applicants
  • SAFRAN [FR]/[FR]
  • SAFRAN AIRCRAFT ENGINES [FR]/[FR]
Inventors
  • PAQUIN, Sylvain
  • DUJOL, Charlotte, Marie
  • ENEAU, Patrice
  • JOUBERT, Hugues, Denis
  • ROLLINGER, Adrien, Bernard, Vincent
Agents
  • DAVID, Alain
Priority Data
155238323.03.2015FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) CERAMIC CORE FOR A MULTI-CAVITY TURBINE BLADE
(FR) NOYAU CERAMIQUE POUR AUBE DE TURBINE MULTI-CAVITES
Abstract
(EN)
Ceramic core used for the production of a hollow turbine blade of a turbomachine by the lost-wax casting method and shaped to constitute the cavities of said blade in a single component, comprising, in order to jointly supply the interior of said cavities with cooling air, core portions (60, 62) intended to form the first and second lateral cavities connected to a core portion (48) intended to form at least one central cavity, both at the foot of the core (54) by at least two ceramic junctions (70) as well as at different heights of said core by a plurality of other ceramic junctions (64, 66, 68) the positioning of which defines the thickness of internal partitions of the blade while ensuring a complement of cooling air to the predetermined critical zones of the first and second lateral cavities.
(FR)
Noyau céramique utilisé pour la fabrication d'une aube de turbine creuse de turbomachine selon la technique de la fonderie à la cire perdue et conformé pour constituer les cavités de cette aube en un seul élément, comportant, pour alimenter conjointement l'intérieur de ces cavités en air de refroidissement, des parties de noyaux (60, 62) destinées à former des première et seconde cavités latérales reliées à une partie de noyau (48) destinée à former au moins une cavité centrale, d'une part en pied de noyau (54) par au moins deux jonctions céramiques (70) et d'autre part à différentes hauteurs de ce noyau par une pluralité d'autres jonctions céramiques (64, 66, 68) dont le positionnement définit l'épaisseur de cloisons internes de l'aube tout en assurant un complément d'air de refroidissement vers des zones critiques prédéterminées des première et seconde cavités latérales.
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