(19)
(11) EP 1 531 235 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.01.2006 Bulletin 2006/03

(43) Date of publication A2:
18.05.2005 Bulletin 2005/20

(21) Application number: 04105587.2

(22) Date of filing: 08.11.2004
(51) International Patent Classification (IPC): 
F01D 9/04(2006.01)
 F01D 5/14(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL HR LT LV MK YU

(30) Priority: 11.11.2003 IT TO20030894

(71) Applicant: ANSALDO ENERGIA S.P.A.
16152 Genova (IT)

(72) Inventors:
  • MARETTO, Luigi
    16146 Genova (IT)
  • TORRE, Alberto
    Genova 16146 (IT)

(74) Representative: Jorio, Paolo et al
Studio Torta S.r.l. Via Viotti, 9
10121 Torino
10121 Torino (IT)

   


(54) Stator for an axial-flow turbine


(57) A vane stator (6) of an axial-flow turbine (1) has a first and a second surface (10, 11) facing each other and radially defining an annular conduit (12) in which a drive fluid flows in use; the conduit defines, in radial section with respect to the axis (2) of the turbine (1), a mean flow direction (13) of the drive fluid; and the first and second surface (10, 11) have respective annular portions (16, 17), which both converge, in the flow direction, towards the mean flow direction (13).







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