Method for manufacturing a rotor blade of a wind power plant, rotor blade and wind power plant

Patent metadata

Field	Value
Publication number	US-10648451-B2
Application number	US-201615254956-A
Country	US
Kind code	B2
Filing date	Sep 1, 2016
Priority date	Mar 4, 2014
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

A method for manufacturing a rotor blade of a wind power plant which has an area close to the blade root in which the rotor blade has an obtuse rear edge. The method includes manufacturing a half-shell on the pressure side and a half-shell on the suction side, introducing and adhesively bonding filler bodies into at least one section of the area of the obtuse rear edge of the pressure-side half-shell and the suction-side half-shell, wherein the sections with the filler bodies lie opposite one another in the assembled rotor blade, assembling and positioning the half-shells relative to one another, wherein an adhesive gap which is delimited by the first adhesive surfaces of the filler bodies remains between the filler bodies, and introducing an adhesive medium into the adhesive gap. Also a rotor blade manufactured according to the method, and a wind power plant including such a rotor blade.

First claim

What is claimed is:

1. A method for manufacturing a rotor blade of a wind power plant which has an area close to a blade root in which the rotor blade has an obtuse rear edge, said method comprising:
manufacturing a pressure-side half-shell and a suction-side half-shell, each of said half-shells forming a part of the obtuse rear edge in the area close to the blade root;
introducing and adhesively bonding a pressure-side filler body into at least one section of the area of the obtuse rear edge of the pressure-side half-shell and introducing and adhesively bonding a suction-side filler body into at least one section of the area of the obtuse rear edge of the suction-side half-shell, wherein the filler bodies bear against the obtuse rear edge of the pressure-side half-shell and the obtuse rear edge of the suction-side half shell, respectively;
positioning the half-shells relative to one another such that sections of the area of the obtuse rear edge of the half-shells to which the filler bodies are adhesively bonded lie opposite one another and such that an adhesive gap, which is delimited in part by first adhesive surfaces of the filler bodies, remains between the filler bodies after the half-shells have been positioned relative to one another;
attaching a single or multi-part closure body to inner, in relation to the rotor blade, second adhesive surfaces of both filler bodies to seal off the adhesive gap with respect to an inside of the rotor blade, the second adhesive surfaces differing from the first adhesive surfaces; and
after the single or multi-part closure body has been attached to the inner second adhesive surfaces of both filler bodies to seal off the adhesive gap with respect to an inside of the rotor blade, introducing an adhesive medium into the adhesive gap between the filler bodies in contact with the first adhesive surfaces of the filler bodies.

2. The method according to claim 1 , wherein the closure body is fixed on at least one of the filler bodies prior to assembling the half-shells.

3. The method according to claim 2 , wherein the closure body is fixed on the filler body in the lower half-shell during assembly.

4. The method according to claim 1 , wherein at least one filler body has a plurality of sections with different cross-sections.

5. The method according to claim 4 , wherein at least one filler body is comprised of a plurality of part-bodies.

6. The method according to claim 1 , wherein the second adhesive surfaces run at least in some sections inclined to the first adhesive surfaces.

7. The method according to claim 1 , wherein the filler bodies are formed of an elastic and solid material.

8. The method according to claim 7 , wherein the solid material is selected from the group consisting of balsa wood, foam and a fiber-reinforced composite.

9. The method according to claim 1 , wherein the closure body is made from a fiber-reinforced plastic material.

10. The method according to claim 1 , wherein the closure body has, at least in some sections, a “V”-shaped cross-section and/or has, at least in some sections, an obtuse “V”-shaped cross-section.

11. The method according to claim 10 , wherein the cross-section of the closure body is adapted to the second adhesive surfaces of the filler bodies.

12. A rotor blade of a wind power plant having an obtuse profiled rear edge in an area close to a blade root, wherein said rotor blade is manufactured according to a method as claimed in claim 1 and includes filler bodies in at least one section of the obtuse profiled rear edge on the suction-side half-shell and the pressure-side half-shell.

13. A wind power plant having at least one rotor blade according to claim 12 .

Assignees

• Senvion Gmbh

Inventors

• Bendel Urs
• Eyb Enno
• Richers Tilman
• Flach Christian
• Mester Hendrik

Classifications

• B29C66/727

  being porous, e.g. foam · CPC title

• B29C66/721

  Fibre-reinforced materials (B29C66/729 takes precedence) · CPC title

• B29C65/54

  between pre-assembled parts · CPC title

• B29C66/1222

  comprising at least a lapped joint-segment · CPC title

• B29C66/3242

  on the inside of a tubular or hollow article · CPC title