Bulkhead of a wind turbine

Patent metadata

Field	Value
Publication number	US-9759184-B2
Application number	US-201113821663-A
Country	US
Kind code	B2
Filing date	Oct 10, 2011
Priority date	Oct 15, 2010
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A bulkhead ( 22 ) of a wind turbine ( 10 ) to be arranged on a rotor blade connection of a rotor blade ( 14 ), especially on a rotor hub ( 9 ). The bulkhead ( 22 ) has a core body ( 30 ). A layer ( 31, 32 ) of fiberglass-reinforced plastic ( 31, 32 ) is arranged on the core body ( 30 ) on both sides respectively and a metal layer body ( 33 ) is arranged on one side of the layer of fiberglass-reinforced plastic ( 31 ). A method for producing a bulkhead ( 22 ) of a wind turbine ( 9 ), which is arranged on a rotor blade connection of a rotor blade ( 14 ) and a use of a bulkhead ( 22 ) of a wind turbine ( 10 ).

First claim

The invention claimed is:

1. A rotor blade ( 14 ) of a wind turbine ( 10 ), the rotor blade ( 14 ) comprising:
a rotor blade root ( 16 ); and
a bulkhead ( 22 ) that is arranged in the rotor blade in an area of the rotor blade root ( 16 ), the bulkhead ( 22 ) including
a core body ( 30 ), wherein the core body ( 30 ) is made of balsa wood,
a plurality of layers ( 31 , 32 ) of fiberglass-reinforced plastic, wherein the layers ( 31 , 32 ) are arranged on the core body ( 30 ) so that the core body ( 30 ) is between the layers ( 31 , 32 ), respectively, and
a metal layer body ( 33 ) is arranged on one side of one of the layers ( 31 ) of fiberglass-reinforced plastic, wherein the metal layer body ( 33 ) is arranged towards an inside of the rotor blade ( 14 ) so as to protect the bulkhead ( 22 ) from erosion by particles that are from the inside of the rotor blade ( 14 ), wherein the metal layer body ( 33 ) is connected with the layer ( 31 ) of fiberglass-reinforced plastic by screws or rivets.

2. The rotor blade ( 14 ) according to claim 1 , wherein the layers ( 31 , 32 ) of fiberglass-reinforced plastic are made of non-woven fabrics.

3. The rotor blade ( 14 ) according to claim 1 , wherein the bulkhead ( 22 ) includes one or more access openings, and wherein the access openings are formed in a closable manner.

4. The rotor blade ( 14 ) according to claim 1 , wherein the core body ( 30 ) has a thickness between 15 mm and 35 mm, and the layers ( 31 , 32 ) of fiberglass-reinforced plastic (FGRP) have a thickness between 1 mm and 5 mm respectively and the metal layer body ( 33 ) has a thickness between 0.1 mm and 0.8 mm.

5. The rotor blade ( 14 ) according to claim 1 , wherein the metal layer body ( 33 ) is made of a non-rusting metal.

6. The rotor blade ( 14 ) according to claim 5 , wherein the metal layer body ( 33 ) is made of stainless steel or aluminium.

7. The rotor blade ( 14 ) according to claim 4 , wherein the core body ( 30 ) has a thickness between 20 mm and 30 mm.

8. The rotor blade ( 14 ) according to claim 4 , wherein the layers ( 31 , 32 ) of fiberglass-reinforced plastic (FGRP) have a thickness between 2 mm to 4 mm.

9. The rotor blade ( 14 ) according to claim 4 , wherein the metal layer body ( 33 ) has a thickness between 0.2 to 0.5 mm.

Assignees

• Bendel Urs
• Senvion Se

Inventors

• Bendel Urs

Classifications

• F03D1/001

  Mechanical Engineering · mapped topic

• F05B2280/6003

  Composites; e.g. fibre-reinforced · CPC title

• F05B2280/102

  Light metals · CPC title

• F03D1/0675 Primary

  of the blades · CPC title

• Y02E10/721

  Cross-Sectional Technologies · mapped topic