(19)
(11) EP 2 075 408 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
06.03.2013 Bulletin 2013/10

(43) Date of publication A2:
01.07.2009 Bulletin 2009/27

(21) Application number: 08173020.2

(22) Date of filing: 29.12.2008
(51) International Patent Classification (IPC): 
F01D 5/14(2006.01)
 F01D 9/04(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 28.12.2007 IT MI20072441

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

(72) Inventor:
  • Camerlenghi, Nicola
    16154 Genova Sestri Ponente (IT)

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

   


(54) Last stage stator blade of a steam turbine low-pressure section


(57) A last stage stator blade of a steam turbine low-pressure section has blade sections (S1, S2, ..., SK) at respective section radii (RS1, RS2, ..., RSK), joined according to a tangential stacking line (LEAN). The tangential stacking line (LEAN) is a fourth-order Bezier curve.










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Search report