Title:
WINDMILL
Document Type and Number:
WIPO Patent Application WO/2012/153717
Kind Code:
A1
Abstract:
There is a need, in lightning protection equipment for a windmill, for maintenance to be made easier while a high level of safety is also maintained. In the present invention, a lightning current received by a receptor on a blade is guided to a grounding wire within the blade. The grounding wire passes through a space on an inner peripheral side of a bearing for altering the pitch angle of the blade, and is guided into a rotor head. The lightning current can be guided toward the rotor head without using the bearing as a path and without the use of a brush or other sliding/abrasive member.
Inventors:
NAGA TAKEHIRO (JP)
TSUMURA YOICHIRO (JP)
MATSUSHITA TAKATOSHI (JP)
TSUMURA YOICHIRO (JP)
MATSUSHITA TAKATOSHI (JP)
Application Number:
PCT/JP2012/061704
Publication Date:
November 15, 2012
Filing Date:
May 08, 2012
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
NAGA TAKEHIRO (JP)
TSUMURA YOICHIRO (JP)
MATSUSHITA TAKATOSHI (JP)
NAGA TAKEHIRO (JP)
TSUMURA YOICHIRO (JP)
MATSUSHITA TAKATOSHI (JP)
International Classes:
F03D11/00
Domestic Patent References:
| WO2007072961A1 | 2007-06-28 |
Foreign References:
| DE19748716C1 | 1998-11-12 | |||
| DE102008045939A1 | 2010-03-11 | |||
| US7390169B2 | 2008-06-24 |
Other References:
See also references of EP 2708743A4
Attorney, Agent or Firm:
KUDOH Minoru (JP)
Minoru Kudo (JP)
Minoru Kudo (JP)
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Claims: