Title:
GAS TURBINE POWER GENERATOR AND ITS ASSEMBLING METHOD
Document Type and Number:
WIPO Patent Application WO/2003/048527
Kind Code:
A1
Abstract:
A gas turbine power generator is provided with a tie−bolt (5) having a large−diameter portion (5a) and a small−diameter portion (5b) and serving as a spindle. A compressor (3) and a turbine (4) engage with the large−diameter portion (5a), and the rotor (14) of a power generator (13) is fitted on the small−diameter portion (5b) to constitute an integral rotating rotor (16). The tie−bolt (5) has a larger diameter at a portion relatively close to the turbine (3) and in a high−temperature environment, to retain a strength enough to stand high−speed rotation in the high−temperature environment. The rotor (14) in a relatively low−temperature environment is fitted to the small−diameter portion (5b) of the tie−bolt (5), and the diameter of a shaft hole (14e) extending through the small−diameter portion (5b). In short, the hoop stress acting on the rotor (14) is reduced to prevent the lifetime from becoming short. Therefore, it is possible to ensure the reliability of the tie−bolt (5) serving as the spindle sufficiently.
Inventors:
HAYASAKA YASUSHI (JP)
SEKIHARA MASARU (JP)
DODO SATOSHI (JP)
SEKIHARA MASARU (JP)
DODO SATOSHI (JP)
Application Number:
PCT/JP2001/010483
Publication Date:
June 12, 2003
Filing Date:
November 30, 2001
Export Citation:
Assignee:
HITACHI LTD (JP)
HAYASAKA YASUSHI (JP)
SEKIHARA MASARU (JP)
DODO SATOSHI (JP)
HAYASAKA YASUSHI (JP)
SEKIHARA MASARU (JP)
DODO SATOSHI (JP)
International Classes:
F01D5/06; H02K7/00; (IPC1-7): F01D5/02; F02C7/00
Domestic Patent References:
| WO1995019495A1 | 1995-07-20 |
Foreign References:
| JPH03246305A | 1991-11-01 | |||
| JPH0274598U | 1990-06-07 | |||
| JPH0828202A | 1996-01-30 | |||
| JPS481733B1 | 1973-01-19 | |||
| JPH0976079A | 1997-03-25 | |||
| JP2001173459A | 2001-06-26 | |||
| US6250064B1 | 2001-06-26 |
Attorney, Agent or Firm:
Kasuga, Yuzuru (1-3 Nihonbashi-Kodenmach, Chuo-ku Tokyo, JP)
Download PDF: