Wind turbine rotor blade and metal sheet

Patent metadata

Field	Value
Publication number	US-12110871-B2
Application number	US-202218262339-A
Country	US
Kind code	B2
Filing date	Jan 11, 2022
Priority date	Jan 27, 2021
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

The segments of a segmented wind turbine rotor blade are screwed together at respective connection ends via a plurality of connecting bolts. Sleeve-shaped pressure pieces are arranged between the rotor blade segments, each of which is mounted on a connecting bolt. A plurality of first metal sheets is provided, each first metal sheet being arranged between a respective connection end and several pressure pieces, so that an electrically conductive connection is formed between several pressure pieces via a first metal sheet. The first metal sheets, which are associated with the first connection end, are each arranged along the circumference of the rotor blade offset from the first metal sheets, which are associated with the second connection end. Further, a metal sheet for a segmented wind turbine rotor blade is disclosed.

First claim

The invention claimed is:

1. A wind turbine rotor blade comprising:
at least two rotor blade segments including a first rotor blade segment having a first connection end and a second rotor blade segment have a second connection end;
said first rotor blade segment and said second rotor blade segment being screwed together at said first connection end and said second connection end via a plurality of connecting bolts;
a plurality of sleeve-shaped pressure pieces arranged between said first rotor blade segment and said second rotor blade segment;
each of said plurality of sleeve-shaped pressure pieces being mounted on a corresponding one of said plurality of connecting bolts;
a plurality of first metal sheets, each of said plurality of first metal sheets being arranged between one of said first connection end and said second connection end and a multiplicity of said plurality of sleeve-shaped pressure pieces so that an electrically conductive connection is formed between adjacent ones of said plurality of sleeve-shaped pressure pieces via corresponding ones of said plurality of first metal sheets; and,
said plurality of first metal sheets, which are associated with said first connection end, being each arranged along a circumference of the rotor blade offset from said plurality of first metal sheets, which are associated with said second connection end.

2. The wind turbine rotor blade of claim 1 , wherein adjacent ones of said plurality of first metal sheets are spaced apart from each other.

3. The wind turbine rotor blade of claim 1 , wherein said plurality of first metal sheets are equal identical parts.

4. The wind turbine rotor blade of claim 1 further comprising a second metal sheet electrically conductively connecting ones of said plurality of sleeve-shaped pressure pieces facing at least one of a leading edge of the wind turbine rotor blade and a trailing edge of the wind turbine rotor blade.

5. The wind turbine rotor blade of claim 1 further comprising a third metal sheet arranged between one of said first connection end and said second connection end and only one of said plurality of sleeve-shaped pressure pieces.

6. The wind turbine rotor blade of claim 5 , wherein the wind turbine rotor blade has a leading edge and a trailing edge; and, said only one of said plurality of sleeve-shaped pressure pieces faces said leading edge or said trailing edge.

7. The wind turbine rotor blade of claim 1 , wherein at least one of:
at least one of said plurality of first metal sheets, which is associated with said first rotor blade segment, is electrically conductively connected to a lightning conductor of said first rotor blade segment; and,
at least one of said plurality of first metal sheets and a second metal sheet, which is associated with said second rotor blade segment, is electrically conductively connected to a second lightning conductor of said second rotor blade segment.

8. The wind turbine rotor blade of claim 5 , wherein at least one of:
at least one of said plurality of first metal sheets and said third metal sheet, which is associated with said first rotor blade segment, is electrically conductively connected to a lightning conductor of said first rotor blade segment; and,
at least one of said plurality of first metal sheets and said third metal sheet, which is associated with said second rotor blade segment, is electrically conductively connected to a second lightning conductor of said second rotor blade segment.

9. The wind turbine rotor blade of claim 4 , wherein at least one of:
at least one of said plurality of first metal sheets and said second metal sheet, which is associated with said first rotor blade segment, is electrically conductively connected to a lightning conductor of said first rotor blade segment; and,
at least one of said plurality of first metal sheets and said second metal sheet, which is associated with said second rotor blade segment, is electrically conductively connected to a second lightning conductor of said second rotor blade segment.

10. The wind turbine rotor blade of claim 1 further comprising at least one of:
a third metal sheet arranged between one of said first connection end and said second connection end and only one of said plurality of sleeve-shaped pressure pieces;
a second metal sheet electrically conductively connecting ones of said plurality of sleeve-shaped pressure pieces facing at least one of a leading edge of the wind turbine rotor blade and a trailing edge of the wind turbine rotor blade; and,
wherein at least one of said plurality of first metal sheets, said second metal sheet, and said third metal sheet has an interface for attaching a further component.

11. The wind turbine rotor blade of claim 10 , wherein said further component is a receptor or an aerodynamic cover.

12. The wind turbine rotor blade of claim 1 , wherein at least one of said plurality of first metal sheets has an interface for attaching a further component.

13. The wind turbine rotor blade of claim 12 , wherein the further component is a receptor or an aerodynamic cover.

14. The wind turbine rotor blade of claim 1 , wherein said plurality of first metal sheets are formed to connect two of said plurality of sleeve-shaped pressure pieces in an electrically conductive manner.

15. The wind turbine rotor blade of claim 1 further comprising at least one of:
a third metal sheet arranged between one of said first connection end and said second connection end and only one of said plurality of sleeve-shaped pressure pieces;
a second metal sheet electrically conductively connecting ones of said plurality of sleeve-shaped pressure pieces facing at least one of a leading edge of the wind turbine rotor blade and a trailing edge of the wind turbine rotor blade; and,
wherein at least one of said plurality of first metal sheets, said second metal sheet, and said third metal sheet is clamped.

16. The wind turbine rotor blade of claim 15 , wherein at least one of said plurality of first metal sheets, said second metal sheet, and said third metal sheet is clamped between opposing end faces configured as mating surfaces.

17. The wind turbine rotor blade of claim 1 , wherein said first connection end and said second connection end each have an end face; and, at least one of said plurality of said first metal sheets lies flat against a corresponding one of said end faces of said first connection end and said second connection end and an end face of a corresponding one of said plurality of sleeve-shaped pressure pieces.

18. The wind turbine rotor blade of claim 1 further comprising at least one of:
a third metal sheet arranged between one of said first connection end and said second connection end and only one of said plurality of sleeve-shaped pressure pieces;
a second metal sheet electrically conductively connecting ones of said plurality of sleeve-shaped pressure pieces facing at least one of a leading edge of the wind turbine rotor blade and a trailing edge of the wind turbine rotor blade;
wherein said first connection end and said second connection end each have an end face; and,
at least one of said plurality of said first metal sheets, said second metal sheet, and said third metal sheet lies flat against a corresponding one of said end faces of said first connection end and said second connection end and an end face of a corresponding one of said plurality of sleeve-shaped pressure pieces.

19. The wind turbine rotor blade of claim 1 , wherein at least one of said plurality of first metal sheets has a p

Assignees

• Nordex Energy Se & Co Kg

Inventors

• Lipka Thomas
• Festner Gerald
• Haspel Benedikt

Classifications

• F05B2260/301

  Retaining bolts or nuts · CPC title

• F05B2240/302

  Segmented or sectional blades · CPC title

• F03D1/0675 Primary

  of the blades · CPC title

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title

• F03D80/30

  Lightning protection · CPC title