Steam turbine

Steam turbine

A steam turbine (100) has: a casing (1); a rotor (2) rotatably arranged in the casing (1); a nozzle diaphragm (3) concentrically arranged with respect to the rotor (2), the nozzle diaphragm (3) being engaged with the casing (1); moving blades (4) arranged in circumferential direction on outer circum...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KENJI KAMIMURA, SATORU ASAI, HITOSHI SAKAKIDA, TAKASHI SASAKI, RYOHEI OGINO, KAZUTAKA IKEDA, YASUSHI OOISHI
Format: Patent
Sprache:eng
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:A steam turbine (100) has: a casing (1); a rotor (2) rotatably arranged in the casing (1); a nozzle diaphragm (3) concentrically arranged with respect to the rotor (2), the nozzle diaphragm (3) being engaged with the casing (1); moving blades (4) arranged in circumferential direction on outer circumference of the rotor (2) at positions adjacent to the nozzle diaphragm (3); seal strips (4d) circumferentially extending on tips (4c) of the moving blades (4), the seal strips (4d) protruding in radial outward direction; and an abradable structure (5) rigidly connected to the nozzle diaphragm (3). The abradable structure (5) faces the seal strips (4d) in radial direction at a facing surface, and has an abradable part (5a) made of an abradable material arranged at the facing surface.