Title:
ROTARY BLADE OF WIND TURBINE AND WIND TURBINE KEEPING ROTATION SPEED CONSTANT
Document Type and Number:
Japanese Patent JP2010127072
Kind Code:
A
Abstract:
To provide a rotary blade and wind turbine which keep rotation speed constant even if wind speed changes by making the blade serving as a brake to reduce rotation speed when exceeding a certain rotation speed.
A rotary blade 8 of a wind turbine having a lift type blade at a tip of a blade support arm 10, swingably pivots a blade 12 on the tip of the blade support arm 10 through the medium of a vertical spindle 11 and has between the blade 12 and blade support arm 10, a blade opening/closing control member 15 which allows the blade 12 to swing in response to a load when the certain load or more is applied to the blade 12 during rotation.
Inventors:
SUZUKI MASAHIKO
Application Number:
JP2008299014A
Publication Date:
June 10, 2010
Filing Date:
November 25, 2008
Export Citation:
Assignee:
GLOBAL ENERGY CO LTD
International Classes:
F03D7/06; F03D3/06
Attorney, Agent or Firm:
Soichi Takezawa
Noritsugu Nakama
Hiroyuki Mori
Noritsugu Nakama
Hiroyuki Mori