WIND TURBINE BLADE AND WIND TURBINE GENERATOR HAVIGN THE SAME

• US 20140186188A1
• Filed: 12/23/2013
• Published: 07/03/2014
• Est. Priority Date: 12/27/2012
• Status: Abandoned Application

• Current Assignee: Mitsubishi Heavy Industries, Ltd.
• Original Assignee: Mitsubishi Heavy Industries, Ltd.
• Inventors: TAKEUCHI, Hiroaki
• Application Number:
  US14/138,872
• Publication Number:
  US 20140186188A1
• Time in Patent Office: Days
• US Class Current: 416/224
• CPC Class Codes: F03D 1/0675 of the blades
• CPC Class Codes: F05B 2230/90 Coating; Surface treatment manufacture with deposition of material F05B2220/30
• CPC Class Codes: F05B 2280/105 Copper
• CPC Class Codes: F05B 2280/1071 Steel alloys
• CPC Class Codes: F05B 2280/1074 Alloys not otherwise provided for
• CPC Class Codes: F05B 2280/5007 Hardness
• CPC Class Codes: F05B 2280/6011 Coating
• CPC Class Codes: F05B 2280/6015 Resin
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A wind turbine blade attached to a hub of a wind turbine generator is provided with a blade body; a first covering layer covering at least a leading edge in a first region including a tip part of the blade body; and a second covering layer covering at least the leading edge in a second region of the blade body, the second region being disposed on a hub side of the first covering layer, and the first covering layer has a higher erosion resistance than the second covering layer.

Claims

1. A wind turbine blade attached to a hub of a wind turbine generator, the wind turbine blade comprising:

a blade body;

a first covering layer which covers at least a leading edge in a first region including a tip part of the blade body; and

a second covering layer which covers at least the leading edge in a second region of the blade body, the second region being disposed on a hub side of the first covering layer,

wherein the first covering layer has a higher erosion resistance than the second covering layer.

2. The wind turbine blade according to claim 1,

wherein the first covering layer and the second covering layer are formed by a first coating and a second coating applied on a surface of the blade body, respectively, and

wherein the first coating has a higher erosion resistance than the second coating.

3. The wind turbine blade according to claim 1,

wherein at least one of the first covering layer or the second covering layer includes a coating whose main component is resin.

4. The wind turbine blade according to claim 3,

wherein the coating includes particles of metal or ceramic embedded in the resin.

5. The wind turbine blade according to claim 3,

wherein the resin is one of polyurethane resin, vinylester resin or fluorine-based resin.

6. The wind turbine blade according to claim 4,

wherein the metal particles are constituted of one or more metals selected from a group including copper, stainless steel, titanium alloy and nickel alloy.

7. A wind turbine generator comprising at least one wind turbine blade,

wherein the at least one blade comprises:

a blade body;

a first covering layer which covers at least a leading edge in a first region including a tip part of the blade body; and

a second covering layer which covers at least the leading edge in a second region of the blade body, the second region being disposed nearer to the hub than the first covering layer, and

wherein the first covering layer has a higher erosion resistance than the second covering layer.