Gasturbine comprising cooling control means which are made partially of Shape Memory Materials (SMM)

The machine has a rotor, and a stator (28) including a swirl passage to guide a secondary flow of a cooling medium to a pre-swirl nozzle. A control unit completely or partially made of shape-memory alloy is arranged in an area of the pre-swirl nozzle to control the secondary flow based on temperatur...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SZWEDOWICZ, JAROSLAW LESZEK, IRMISCH, STEFAN, MOZHAROV, ALEXEY
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	The machine has a rotor, and a stator (28) including a swirl passage to guide a secondary flow of a cooling medium to a pre-swirl nozzle. A control unit completely or partially made of shape-memory alloy is arranged in an area of the pre-swirl nozzle to control the secondary flow based on temperature in an automated manner. The control unit includes a curved membrane made of shape-memory alloy and projected into the swirl passage, where the membrane changes flow cross section of the swirl passage by changing a curvature of the membrane. The control unit is selected from a group consisting of a membrane, an adjusting device (37), a wall element (38), a guide plate (39), an adjusting element (40), torsion elements, a cover, cover elements, and an elongation unit.