Method for cooling turbine stators and cooling system for implementing said method
AssigneeTurbomeca
InventorsDenis Luc, Alain Chanteloup, Manuel Philippe, Jean Pierre
Life of this patent
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Abstract
A method and system for cooling turbine engine turbines, the system includes: at least one pair of parts to be cooled, the pair including a stator upstream from the rotor valve, and a sealing ring mounting a downstream movable blade rotor that is adjacent to the stator; a turbine casing; and an outlet path. The system further includes: at least one opening in the casing facing at least one part to be cooled; and an air circuit producing a forced convection in connection with the parts and at least one downstream outlet in the path so as to draw in and transport an ambient air flow.
Claims11
1-10. (canceled)
A method for cooling turbine parts of an engine presenting at exhaust an architecture with a positive Cp on whole operating speeds, for which a cooling is desired, provided for at least one pair of parts including an upstream stator and a sealing ring support of downstream movable blades adjacent to the stator, the method comprising:
- tapping an ambient air flow by aspiration at a level of at least one part to be cooled;
- then a crossing producing a forced convection in connection with the part;
- and
- then a downstream air reintroduction in an outlet path,
- wherein cooling is performed in a serial mode with a successive circulation of same air flow in both parts, in a parallel mode with circulations being independent of the air flow in each of the both parts, or in a mixed mode with successive circulation of a same flow in the both parts, and independent circulation of a second flow in the second part by tapping ambient air at a level of the upstream stator for serial and mixed cooling, and of each part for parallel and mixed cooling.
Dependencies are inferred from the claim text.