Title:
GEOTHERMAL STEAM TURBINE
Document Type and Number:
WIPO Patent Application WO2003064818
Kind Code:
A3
Abstract:
A geothermal turbine comprises a turbine casing (16) a turbine rotor shaft (26) a plurality of nozzle diaphragm outer rings (17) fixed to the turbine casing, a plurality of nozzle diaphragm inner rings (18) located radially inside the nozzle diaphragm outer rings (17), a plurality of nozzles (19) placed between the nozzle diaphragm outer rings (17) and the nozzle diaphragm inner rings (18) which forms a steam passage, a plurality of rotor blades (36) mounted on the turbine rotor shaft (26), which face the nozzles and form a blade cascade in a circumferential direction, a shroud (37) arranged on tip of the rotor blade (36), an overhang (38) attached to the nozzle diaphragm outer ring (17), which extends downstream of the nozzles and has an inner surface (38a) facing radially outside the shroud, and a plurality of sealing fins (41) which protrude radially outward from the shroud (37) and face the overhang (38).
Inventors:
SUZUKI ATSUHIDE (JP)
FUJIWARA TOSHIHIRO (JP)
FUKUDA MASATAKA (JP)
IKEDA KASUAKI (JP)
MATSUURA TOSHIHIRO (JP)
WATANABE OSAMU (JP)
FUJIHASHI HISAO (JP)
TAKAGI KENTARO (JP)
FUJIWARA TOSHIHIRO (JP)
FUKUDA MASATAKA (JP)
IKEDA KASUAKI (JP)
MATSUURA TOSHIHIRO (JP)
WATANABE OSAMU (JP)
FUJIHASHI HISAO (JP)
TAKAGI KENTARO (JP)
Application Number:
PCT/IB2003/000689
Publication Date:
November 27, 2003
Filing Date:
January 28, 2003
Export Citation:
Assignee:
TOSHIBA KK (JP)
SUZUKI ATSUHIDE (JP)
FUJIWARA TOSHIHIRO (JP)
FUKUDA MASATAKA (JP)
IKEDA KASUAKI (JP)
MATSUURA TOSHIHIRO (JP)
WATANABE OSAMU (JP)
FUJIHASHI HISAO (JP)
TAKAGI KENTARO (JP)
SUZUKI ATSUHIDE (JP)
FUJIWARA TOSHIHIRO (JP)
FUKUDA MASATAKA (JP)
IKEDA KASUAKI (JP)
MATSUURA TOSHIHIRO (JP)
WATANABE OSAMU (JP)
FUJIHASHI HISAO (JP)
TAKAGI KENTARO (JP)
International Classes:
B23K9/00; B23K9/04; B23K10/02; B23K35/30; B23K35/32; C22C14/00; C22C19/00; C22C32/00; C22C38/00; C23C4/04; C23C4/08; F01D5/06; F01D5/20; F01D5/22; F01D5/28; F01D9/04; F01D11/02; F01D11/08; F03G4/00; (IPC1-7): F01D11/08; F01D5/22; F01D9/04; F01D11/02; F01D5/20; F02C7/30; F01D5/28
Foreign References:
| EP0287371A1 | 1988-10-19 | |||
| US4671735A | 1987-06-09 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 010, no. 163 (M - 487) 11 June 1986 (1986-06-11)
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 03 31 March 1997 (1997-03-31)
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 03 31 March 1997 (1997-03-31)
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