Title:
PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/243680
Kind Code:
A1
Abstract:
The present invention pertains to a pump device for raising the pressure of liquid hydrogen, and particularly, to a pump device comprising a thrust balance mechanism for canceling axial thrust applied to an impeller. This pump device comprises: a rotary shaft (1); a plurality of impellers (2a-2h) fixed to the rotary shaft (1); bearings (5, 6) which rotatably support the rotary shaft (1); a pump casing (7) which accommodates the plurality of impellers (2a-2h); and a first thrust balance mechanism (20) and a second thrust balance mechanism (40) which cancel the own weight of a rotary body including the rotary shaft (1) and the plurality of impellers (2a-2h), and the axial thrust acting on the plurality of impellers (2a-2h).
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Inventors:
HONDA SHUICHIRO (JP)
KASATANI TETSUJI (JP)
IWAMI MITSUTAKA (JP)
WATAJI KEI (JP)
IKEDA HAYATO (JP)
KASATANI TETSUJI (JP)
IWAMI MITSUTAKA (JP)
WATAJI KEI (JP)
IKEDA HAYATO (JP)
Application Number:
PCT/JP2023/022219
Publication Date:
December 21, 2023
Filing Date:
June 15, 2023
Export Citation:
Assignee:
EBARA CORP (JP)
International Classes:
F04D29/041
Foreign References:
| JP2007016750A | 2007-01-25 | |||
| JPH0255896A | 1990-02-26 |
Attorney, Agent or Firm:
HIROSAWA, Tetsuya et al. (JP)
Download PDF:
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