(19)
(11) EP 2 151 545 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
19.12.2012 Bulletin 2012/51

(43) Date of publication A2:
10.02.2010 Bulletin 2010/06

(21) Application number: 09167300.4

(22) Date of filing: 05.08.2009
(51) International Patent Classification (IPC): 
F01D 5/30(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 MK MT NL NO PL PT RO SE SI SK SM TR
Designated Extension States:
AL BA RS

(30) Priority: 07.08.2008 JP 2008204234

(71) Applicant: Hitachi Ltd.
Tokyo 100-8280 (JP)

(72) Inventors:
  • Hayasaka, Yasushi
    Tokyo 100-8220 (JP)
  • Toriya, Hajime
    Tokyo 100-8220 (JP)
  • Murakami, Katsuhiro
    Ibaraki 317-0073 (JP)

(74) Representative: Matias, Bruno M. 
MERH-IP Matias Erny Reichl Hoffmann Paul-Heyse-Strasse 29
80336 München
80336 München (DE)

   


(54) Turbine blade and fixation structure thereof


(57) Disclosed is a turbine rotor blade 40a, 40b that is highly manufacturable and capable of reducing the stress caused by centrifugal force. The turbine rotor blade 40a includes: a vane portion 3 having a blade leading edge 21 which is positioned upstream in the distribution direction of working fluid, and a blade trailing edge 22 which is positioned downstream of the blade leading edge 21; and a blade base 5 portion which is extended unidirectionally on a base side of the vane portion 3 and engaged with a blade groove 6 formed in the outer circumference of a turbine rotor 8. The turbine rotor 8 circumferential position of the end of the blade base portion 5 on the side toward the blade leading edge 21 is different from the turbine rotor 8 circumferential position of the end of the blade base portion 5 on the side toward the blade trailing edge 22.







Search report









Search report