Title:
WATER TURBINE BLADE OF HYDROELECTRIC POWER GENERATOR
Document Type and Number:
Japanese Patent JP2020139498
Kind Code:
A
Abstract:
To provide a water turbine blade of hydroelectric power generator, which, while realizing easiness in assembly and maintenance by dividing the blade, has an ensured strength even under an environment where alternating stress acts on the blade due to fluctuations in the flow velocity of running water or appearance and disappearance of a part of the blade on the water surface, and in which fretting wear due to load fluctuation is suppressed.SOLUTION: A turbine blade 1 of this hydroelectric power generator is a propeller-type blade configured by a hub 11 and a plurality of blades 12 radially arranged around the hub 11. Each blade 12 is divided into each other, and each blade 12 integrally has a hub division body 11a that is a part of the hub 11. The blades 12 are coupled to each other at the site of the hub division body 11a.SELECTED DRAWING: Figure 3
Inventors:
GOTO TOMOMI
KONDO HIROMITSU
KONDO HIROMITSU
Application Number:
JP2020014863A
Publication Date:
September 03, 2020
Filing Date:
January 31, 2020
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F03B3/12; F03B3/04; F03B7/00
Domestic Patent References:
| JP2014507599A | 2014-03-27 | |||
| JP2000008802A | 2000-01-11 | |||
| JP2018091280A | 2018-06-14 |
Foreign References:
| CN102022379A | 2011-04-20 |
Attorney, Agent or Firm:
Masashi Noda
Shuji Sugimoto
Shuji Sugimoto