Apparatus and method for minimizing differential thermal expansion of gas turbine vane structures

Apparatus and method for minimizing differential thermal expansion of gas turbine vane structures

In a gas turbine having a plurality of shrouded vane segments (1) and a duct (58) directing a hot gas (19) to flow through the vanes (7) over a first surface (30) of the shroud (3), a containment structure (9) is provided for containing and distributing cooling air (13) which consists of a first lay...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: HULTGREN, KENT GORAN, MATARAZZO, JOHN CARMINE
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
AIR INTAKES FOR JET-PROPULSION PLANTS
BLASTING
COMBUSTION ENGINES
CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
ENGINE PLANTS IN GENERAL
GAS-TURBINE PLANTS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS
INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04
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:In a gas turbine having a plurality of shrouded vane segments (1) and a duct (58) directing a hot gas (19) to flow through the vanes (7) over a first surface (30) of the shroud (3), a containment structure (9) is provided for containing and distributing cooling air (13) which consists of a first layer (17) and a second layer (18) joined to form a laminate structure (9) and which is attached to a second surface (24) of each of said shrouds (3) and has first passageways (59) disposed between the first and second layers (17, 18), in flow communication with a plurality of second passageways (29) formed in said shrouds (3) for directing a portion (26) of said hot gas (19) to said first passageways (59) to minimize differential thermal expansion of the structure.