Title:
MULTI-STAGE SCREW ROTATING MACHINE AND COMPRESSED AIR STORAGE POWER GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/070653
Kind Code:
A1
Abstract:
Compressors 10 or expanders 50 that compress or expand air via paired male rotor screws 84 and female rotor screws 85 are provided in multiple stages. In each compressor 10 or each expander 50, the male rotor screw 84 and the female rotor screw 85 are supported by rolling bearings 88, 89, and the compression ratio in each compressor 10 or the expansion ratio in each expander 50 is set so that the differential pressure is equal to or less than a first predetermined pressure. The first predetermined pressure is a pressure at which a radial load and a thrust load generated in the male rotor screw 84 and the female rotor screw 85 due to the differential pressure do not exceed an allowable load in the rolling bearings 88, 89.
Inventors:
MATSUKUMA MASAKI
MATSUO YUJI
MATSUO YUJI
Application Number:
PCT/JP2021/030210
Publication Date:
April 07, 2022
Filing Date:
August 18, 2021
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
F04C18/16; F01D25/16; F01K23/16; F02C1/02; F04C23/00; F04C29/00
Foreign References:
| JP2005325731A | 2005-11-24 | |||
| JP2013241915A | 2013-12-05 | |||
| JPH04228892A | 1992-08-18 | |||
| JPH08512379A | 1996-12-24 | |||
| JP2019190350A | 2019-10-31 | |||
| JP2019039387A | 2019-03-14 | |||
| JP2019044737A | 2019-03-22 | |||
| JP2017008726A | 2017-01-12 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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