Mitsubishi Heavy Industries Limited

Nobuyasu Nakamura

Takao Kuroiwa

Toshiyuki Hirano

Takatoshi Matsushita

Shinji Arinaga

Masaya Kawano

Masaaki Shibata

Tomohiro Numajiri

Yoshihiko Hayashi

Noriyuki Hayashi

Kai Karikomi

Kazuhisa Tsutsumi

Takehiro Naka

A wind turbine blade used in a wind power generator that receives wind and rotates a rotating shaft of a generator includes at least two layers on a surface of a blade body, one of the layers being colored with a coating material different in color from the blade body and the rest of the layers. The layers are provided at least on a tip, particularly at a front edge of the wind turbine blade. A wind turbine blade monitoring system that monitors the wind turbine blade includes: an imaging unit that images the wind turbine blade in a predetermined position over a predetermined period at timing when the wind turbine blade passes through the predetermined position; and an indication unit that chronologically indicates imaging results of the wind turbine blade imaged by the imaging means.

Wear control apparatus and wind turbine blade monitoring system including wind turbine blade

A wind turbine blade has a blade body, a plurality of receptorsembedded in and exposed to the surface of the blade body, a conductor layerprovided on the surface of the blade bodyand connecting the receptorswith one another and a downconductorconnected to the receptorsand provided in the blade body. The downconductormay be embedded in an insulator.

Wind turbine blade and wind turbine generator having the same

A wind turbine blade is provided with an outer skin layer formed of fiber-reinforced plastic, and a plurality of main structural members formed of fiber-reinforced plastic integrally with the outer skin layer to extend in a blade length direction. The main structural members include a plurality of main dorsal structural members positioned on a dorsal side of the wind turbine blade, and a plurality of main ventral structural members positioned on a ventral side of the wind turbine blade.

Wind turbine blade with sufficiently high strength and light weight

The present invention proposes a lightning protection device of a windmill blade, comprising a tip receptor assembly having receptors which are mounted, in particular to, the tip end part of the blade where the blade profile becomes smaller, and having a simple structure so as to be readily assembled, and an intermediate receptor assembly having a receptor which is set at the outer surface of the blade so as to exhibit an effective countermeasure against increasing of the air pressure in the blade upon a lightning striking upon the blade, a lightening current being discharged to the ground from the receptors through connection equipment such as lead wires laid through the inside of the blade the windmill body and bypass brushes, characterized in that a base plate made of an electrically conductive material and connected thereto with the lead wires is embedded in the blade, and the receptors are secured and supported to the base plate, being exposed at the outer surface of the blade. Further, the present invention also proposes a method of assembling the lightning protection device.

Lightning protection device of windmill blade

The present invention provides a wind-turbine rotor-blade hoisting apparatus that enables attachment and removal of wind-turbine rotor blades without using a plurality of heavy machines and that enables attachment and removal of wind-turbine rotor blades on a site having a complex land shape with little flat land, a method for attaching a wind-turbine rotor blade, and a method for constructing a wind power generator. The present invention is characterized in that it includes a sheave () that guides a hoisting wire () from a rotor head (), to which a wind-turbine rotor blade () is to be attached, toward the wind-turbine rotor blade () and that is arranged so as to be movable in a direction along the rotation axis of the rotor head (); a retaining portion () that retains an attaching end of the wind-turbine rotor blade () such that a line connecting the center of gravity of the wind-turbine rotor blade () and a connecting portion, to which the hoisting wire () is connected, crosses the longitudinal axis of the wind-turbine rotor blade (); and a winch () that is disposed on the ground and that draws the hoisting wire () to wind up or let out the retaining portion ().

Growing community of inventors

Tokyo, Japan

Nobuyasu Nakamura