EP 2047003 B1 20130904 - HIGHLY CORROSION-RESISTANT MOVABLE BLADE ASSEMBLY FOR A STEAM TURBINE, IN PARTICULAR A GEOTHERMAL IMPULSE TURBINE
Title (en)
HIGHLY CORROSION-RESISTANT MOVABLE BLADE ASSEMBLY FOR A STEAM TURBINE, IN PARTICULAR A GEOTHERMAL IMPULSE TURBINE
Title (de)
HOCH KORROSIONSBESTÄNDIGE BEWEGLICHE LAUFSCHAUFELANORDNUNG FÜR EINE DAMPFTURBINE, INSBESONDERE EINE GEOTHERMALIMPULSTURBINE
Title (fr)
ENSEMBLE DE PALES DEPLAÇABLES HAUTEMENT RÉSISTANT À LA CORROSION POUR UNE TURBINE À VAPEUR, EN PARTICULIER UNE TURBINE À IMPULSION GÉOTHERMIQUE
Publication
Application
Priority
IT 2006000565 W 20060725
Abstract (en)
[origin: WO2008012842A1] A highly corrosion-resistant movable blade assembly (20) for a steam turbine, in particular a geothermal impulse turbine, has an array (14) of rotor blades (15) carried by a shaft (7) rotating about an axis (A)/ each blade (15) extends between one end (22) attached to the shaft (7), and a free end (24) terminating with a top portion (25) with no mechanical connection to the top portions (25) of the other blades (15); the blades (15) are made of a nickel-based metal alloy containing chromium, iron, niobium, and molybdenum, e.g. a metal alloy in the INCONEL® group or a similar material. For high resistance against corrosion and erosion. In particular, the blades are unshrouded to avoid accumulation of deposits and subdeposit corrosion.
IPC 8 full level
C22C 19/05 (2006.01); F01D 5/14 (2006.01); F01D 5/28 (2006.01)
CPC (source: EP US)
C22C 19/05 (2013.01 - EP US); F01D 5/141 (2013.01 - EP US); F01D 5/28 (2013.01 - EP US); F05C 2201/0466 (2013.01 - EP US); F05D 2220/31 (2013.01 - EP US); F05D 2300/131 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008012842 A1 20080131; EP 2047003 A1 20090415; EP 2047003 B1 20130904; JP 2009544895 A 20091217; US 2009324419 A1 20091231
DOCDB simple family (application)
IT 2006000565 W 20060725; EP 06796230 A 20060725; JP 2009521419 A 20060725; US 37490509 A 20090624