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1. WO2020207909 - IMPROVED DEVICE FOR ATTACHING BLADES IN A CONTRA-ROTATING TURBINE

Publication Number WO/2020/207909
Publication Date 15.10.2020
International Application No. PCT/EP2020/059506
International Filing Date 03.04.2020
IPC
F01D 1/26 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
1Non-positive-displacement machines or engines, e.g. steam turbines
24characterised by counter-rotating rotors subjected to same working-fluid stream without intermediate stator blades or the like
26traversed by the working-fluid substantially axially
F01D 5/03 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
02Blade-carrying members, e.g. rotors
03Annular blade-carrying members having blades on the inner periphery of the annulus and extending inwardly radially, i.e. inverted rotors
F01D 5/26 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
26Antivibration means not restricted to blade form or construction or to blade-to-blade connections
F01D 5/30 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
30Fixing blades to rotors; Blade roots
F02C 3/067 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
3Gas-turbine plants characterised by the use of combustion products as the working fluid
04having a turbine driving a compressor
06the compressor comprising only axial stages
067having counter-rotating rotors
CPC
F01D 1/26
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
1Non-positive-displacement machines or engines, e.g. steam turbines
24characterised by counter-rotating rotors subjected to same working fluid stream without intermediate stator blades or the like
26traversed by the working-fluid substantially axially
F01D 5/03
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
02Blade-carrying members, e.g. rotors
03Annular blade-carrying members having blades on the inner periphery of the annulus and extending inwardly radially, i.e. inverted rotors
F01D 5/26
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
26Antivibration means not restricted to blade form or construction or to blade-to-blade connections ; or to the use of particular materials
F01D 5/30
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
30Fixing blades to rotors; Blade roots ; ; Blade spacers
F02C 3/067
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
3Gas-turbine plants characterised by the use of combustion products as the working fluid
04having a turbine driving a compressor
06the compressor comprising only axial stages
067having counter-rotating rotors
F05D 2230/60
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
60Assembly methods
Applicants
  • SAFRAN AIRCRAFT ENGINES [FR]/[FR]
Inventors
  • SULTANA, Patrick, Jean, Laurent
  • COIFFIER, Clément, Charles, Jérémy
  • RENON, Olivier
  • ZAMAI, Laurent, Cédric
Agents
  • CABINET BEAU DE LOMENIE
Priority Data
FR190374108.04.2019FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) IMPROVED DEVICE FOR ATTACHING BLADES IN A CONTRA-ROTATING TURBINE
(FR) DISPOSITIF AMELIORE D'ATTACHE D'AUBES DANS UNE TURBINE CONTRAROTATIVE
Abstract
(EN)
The invention relates to a contra-rotating turbine (C) of a turbine engine (10) extending about an axis (X) and comprising an inner rotor configured to rotate about the axis of rotation (X), and comprising an inner drum to which an inner moving blading (22) is attached, an outer rotor configured to rotate about the axis of rotation (X) in a direction opposite to the inner rotor, and comprising an outer drum (50) to which an outer moving blading (20) is attached, the outer moving blading (20) comprising at least one attachment rod (212) extending through an opening (51) of the outer drum (50), the outer moving blading (20) being attached to the outer drum (50) via a clamping means (100) attached to the attachment rod (212) from an outer face of the outer drum (50), a set ring (80) being disposed around the attachment rod (212) in the opening (51) of the outer drum (50).
(FR)
Turbine contrarotative (C) de turbomachine (10) s'étendant autour d'un axe (X) et comprenant un rotor interne configuré pour tourner autour de l'axe de rotation (X), et comprenant un tambour interne sur lequel est fixé un aubage mobile interne (22), un rotor externe configuré pour tourner autour de l'axe de rotation (X) dans un sens opposé au rotor interne, et comprenant un tambour externe (50) sur lequel est fixé un aubage mobile externe (20), l'aubage mobile externe (20) comprenant au moins une tige de fixation (212) s'étendant à travers un orifice (51) du tambour externe (50), l'aubage mobile externe (20) étant fixé au tambour externe (50) par l'intermédiaire d'un moyen de serrage (100) fixé à la tige de fixation (212) depuis une face externe du tambour externe (50), une bague de calage (80) étant disposée autour de la tige de fixation (50) dans l'orifice (51) du tambour externe (50).
Latest bibliographic data on file with the International Bureau