COOLING SYSTEM AND METHOD FOR AXIAL FLOW TURBINE

PROBLEM TO BE SOLVED: To provide more efficient means and method for cooling a tip of a turbine blade, in particular, a last-stage blade of a composite material.SOLUTION: An axial flow turbine 10 is described having a casing 11 defining a flow path for a working fluid therein, a rotor 14 co-axial to...

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Bibliographische Detailangaben
Hauptverfasser:	MOKULYS THOMAS, BENJAMIN MEGERLE, HAVAKECHIAN SAID
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ACCUMULATORS STEAM ENGINE PLANTS STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide more efficient means and method for cooling a tip of a turbine blade, in particular, a last-stage blade of a composite material.SOLUTION: An axial flow turbine 10 is described having a casing 11 defining a flow path for a working fluid therein, a rotor 14 co-axial to the casing, a plurality of stages, each including a stationary row of vanes 12 circumferentially mounted on the casing a rotating row of blades 13, circumferentially mounted on the rotor 14, with an inner face of the casing exposed to the working fluid having one or more essentially circumferential grooves 111 of increasing depth each ending in an extraction port 112 with a bore. One or more grooves 111 ending on a joint line (C) of the casing 11, and a bore 12 for the extraction port are positioned on both sides of the joint line (C).