Method for producing a wind turbine rotor blade, and wind turbine rotor blade

Patent metadata

Field	Value
Publication number	US-11305503-B2
Application number	US-201716471946-A
Country	US
Kind code	B2
Filing date	Dec 15, 2017
Priority date	Dec 22, 2016
Publication date	Apr 19, 2022
Grant date	Apr 19, 2022

Abstract

A method of producing a wind turbine rotor blade. The wind turbine rotor blade has at least an inner blade portion and an outer blade portion, as well as a connecting element. The inner blade portion is wound on a winding form having a first and a second winding portion. The first and second winding portions are releasably fixed to each other by way of a screw connection. The second winding portion is of a conical configuration so that after winding of the inner blade portion a sleeve is produced at an end of the inner blade portion.

First claim

The invention claimed is:

1. A method of producing a wind turbine rotor blade comprising an inner blade portion and an outer blade portion, the method comprising:
forming the inner blade portion by winding composite fabrics on a first winding form, the first winding form having a first winding portion configured to separate from a second winding portion, wherein the first and second winding portions are fixed to each other in a longitudinal direction,
wherein the second winding portion is of a conical configuration in the longitudinal direction so that after the winding composite fabrics, a sleeve is formed at an end of the inner blade portion, and
winding laminate on a second winding form to form a connecting element, wherein the connecting element is configured to connect the inner blade portion and the outer blade portion together, wherein the connecting element has a first portion and a second portion, and
wherein a form having a conical shape is pushed on to the first portion of the connecting element before the winding laminate is hardened in order to provide a first portion of a conical configuration.

2. The method according to claim 1 further comprising releasably connecting the inner blade portion and the outer blade portion together using the connecting element.

3. The method according to claim 1 further comprising connecting the inner blade portion and the outer blade portion together using the connecting element and adhesive.

Assignees

• Wobben Properties Gmbh

Inventors

• Bürkner Falko

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• B29C65/561

  using screw-threads being integral at least to one of the parts to be joined · CPC title

• B29C65/48

  using adhesives {, i.e. using supplementary joining material; solvent bonding} · CPC title

• F05B2230/30

  with deposition of material · CPC title

• B29D99/0028 Primary

  hollow blades · CPC title