Wind turbine rotor blade and wind turbine

Patent metadata

Field	Value
Publication number	US-11220994-B2
Application number	US-201917045735-A
Country	US
Kind code	B2
Filing date	Apr 11, 2019
Priority date	Apr 16, 2018
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

There is provided a wind turbine rotor blade having a blade outer side, a wall with a laminate, a blade inner side and at least a first and a second rotor blade part. The at least one first and second rotor blade parts are fixed together by means of at least one connecting unit in a separation plane. The connecting unit has at least one cable with a first end with cable fibers which are fixed in or at the laminate of the wall. The connecting unit has at least one projection at the first and second rotor blade parts respectively. The projections are respectively fixedly connected to the wall of rotor blade. The at least one cable is connected at at least one projection. The connecting unit has at least one tensioning element, by means of which the projections on the first and second rotor blade parts can be braced with each other.

First claim

The invention claimed is:

1. A wind turbine rotor blade, comprising:
a blade outer side;
a wall having a laminate;
a blade inner side; and
at least a first rotor blade part and a second rotor blade part fixed together by at least one connecting unit in a separation plane,
wherein the at least one connecting unit has at least one cable with a first end with cable fibers fixed in or connected to the laminate of the wall,
wherein the at least one connecting unit has at least one projection at the first and second rotor blade parts, respectively, wherein the respective at least one projections are fixedly connected to the laminate of the wall,
wherein the at least one cable are connected at the at least one projection,
wherein the at least one connecting unit has at least one tensioning element, wherein the respective at least one projections at the first and second rotor blade parts are configured to be braced with each other,
wherein the cable fibers of the at least one cable are fixed in or connected to the laminate in a fanned-out relationship.

2. The wind turbine rotor blade according to claim 1 , wherein the at least one cable has a fixing portion that is fixed to the at least one projection.

3. The wind turbine rotor blade according to claim 2 wherein the fixing portion is a cable loop.

4. The wind turbine rotor blade according to claim 1 further comprising at least one centering bolt, wherein the at least one centering bolt, in a region of the separation plane, projects into the first and the second rotor blade parts.

5. The wind turbine rotor blade according to claim 1 wherein the at least one connecting unit is a plurality of connecting units.

6. A wind turbine, comprising:
a nacelle;
an aerodynamic rotor; and
at least one wind turbine rotor blade according to claim 1 coupled to the aerodynamic rotor.

7. A wind turbine, comprising:
at least two rotor blade connecting locations, and
at least two wind turbine rotor blades, each having a rotor blade outer side, a wall having a laminate, and a rotor blade inner side,
wherein the at least two wind turbine rotor blades are coupled by a plurality of connecting units at the at least two rotor blade connecting locations,
wherein each of the plurality of connecting units have a cable with a first end having a plurality of cable fibers provided in or at the laminate of the respective wind turbine rotor blade,
wherein the respective cables have a fixing portion with which the cable is fixed at a projection, which is fixedly coupled to the laminate of the respective wind turbine rotor blade,
wherein each of the plurality of connecting units have at least one tensioning element which braces the projection with the rotor blade connecting location,
wherein the plurality of cable fibers of the respective cables are fixed in or connected to the laminate in a fanned-out relationship.

Assignees

• Wobben Properties Gmbh

Inventors

• Bürkner Falko
• Hoffmann Alexander

Classifications

• F03D1/0675 Primary

  of the blades · CPC title

• F05B2260/30

  Retaining components in desired mutual position · CPC title

• Y02P70/50

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

• F05B2240/302

  Segmented or sectional blades · CPC title

• F05B2260/301

  Retaining bolts or nuts · CPC title