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1. WO2017020178 - COOLING ARRANGEMENTS IN TURBINE BLADES

Publication Number WO/2017/020178
Publication Date 09.02.2017
International Application No. PCT/CN2015/085745
International Filing Date 31.07.2015
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
F01D 5/22 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
22Blade-to-blade connections, e.g. by shrouding
CPC
F01D 5/186
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
186Film cooling
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 5/20
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
20Specially-shaped blade tips to seal space between tips and stator
F01D 5/225
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
22Blade-to-blade connections, ; e.g. for damping vibrations
225by shrouding
F05D 2240/307
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
20Rotors
30Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
307related to the tip of a rotor blade
F05D 2260/202
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
2260Function
20Heat transfer, e.g. cooling
202by film cooling
Applicants
  • GENERAL ELECTRIC COMPANY [US]/[US]
  • TAYLOR, Zachary James [US]/[US] (US)
  • ZHOU, Ying [CN]/[CN] (US)
  • SURTI, Ankit Rajesh [IN]/[IN] (US)
  • MISTRY, Hiteshkumar Rameshchandra [IN]/[IN] (US)
Inventors
  • TAYLOR, Zachary James
  • ZHOU, Ying
  • SURTI, Ankit Rajesh
  • MISTRY, Hiteshkumar Rameshchandra
Agents
  • CHINA PATENT AGENT (H.K.) LTD.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COOLING ARRANGEMENTS IN TURBINE BLADES
(FR) AGENCEMENTS DE REFROIDISSEMENT DANS DES AUBES DE TURBINE
Abstract
(EN)
A rotor blade for a turbine (12) of a gas turbine (10) includes an airfoil (25). The airfoil (25) may have a leading edge (28), a trailing edge (29), an outboard (31), and an inboard end that attaches to a root (21) configured to couple the rotor blade to a rotor disc. The airfoil (25) may have a cooling configuration that includes elongated cooling channels (33) for receiving and directing a coolant through the airfoil (25). The rotor blade may further include: a tip shroud (55) connected to the airfoil (25); outlet ports (37) formed through an outboard face (60) of the tip shroud (55) that fluidly communicate with the cooling channels; and flow directing structure formed on the outboard surface (60) of the tip shroud (55). The flow directing structure may be positioned relative to the outlet ports (37) and configured for directing the flow of coolant discharged from the outlet ports (37). The rotor blade may be useful to reduce local tip shroud temperature as well as improved stage aerodynamic efficiency by reducing the coolant supply needed to maintain the component at desired temperature levels.
(FR)
L'invention concerne une pale de rotor pour une turbine (12) d'une turbine à gaz (10) contenant une surface portante (25). La surface portante (25) peut avoir un bord d'attaque (28), un bord de fuite (29), une plaque extérieure (31) et une extrémité plaque intérieure qui se fixe à une emplanture (21) conçue pour accoupler la pale de rotor à un disque de rotor. La surface portante (25) peut avoir une configuration de refroidissement qui comprend des canaux de refroidissement allongés (33) afin de recevoir et de diriger un liquide de refroidissement à travers la surface portante (25). La pale de rotor peut comprendre en outre : un carénage (55) de bout relié à la surface portante (25) ; des orifices de sortie (37) formés à travers une face de plaque extérieure (60) du carénage (55) de bout qui communique par voie fluidique avec les canaux de refroidissement ; et une structure de direction d'écoulement formée sur la surface de plaque extérieure (60) du carénage (55) de bout. La structure de direction d'écoulement peut être positionnée par rapport aux orifices de sortie (37) et conçue pour diriger l'écoulement de liquide de refroidissement évacué depuis les orifices de sortie (37). La pale de rotor peut être utile pour réduire la température locale du carénage de bout ainsi que pour améliorer l'efficacité aérodynamique d'étage en réduisant l'alimentation en liquide de refroidissement requise pour maintenir le composant à des niveaux de température souhaités.
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