Method for mounting a rotor blade and assembly arrangement

Patent metadata

Field	Value
Publication number	US-9897068-B2
Application number	US-201314433362-A
Country	US
Kind code	B2
Filing date	Sep 19, 2013
Priority date	Oct 2, 2012
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

The invention relates to a method for mounting a rotor blade with a rotor blade shell and an internal space defined by the rotor blade shell, by at least one rotor blade clamp being applied around the outside of the rotor blade shell, by means of which at least one clamping force is exerted from the outside to the rotor blade shell, directed into the internal space by at least one expansion device being introduced into the internal space, by the expansion device inside the internal space being moved into at least one segment of the rotor blade around which the at least one rotor blade clamp is applied, by the at least one expansion device being expanded inside the at least one segment until at least one outwardly-acting counteracting force is exerted from the inside on the rotor blade shell.

First claim

The invention claimed is:

1. A method for mounting a rotor blade ( 20 ) with a rotor blade shell and an internal space ( 53 ) defined by the rotor blade shell, the mounting performed by at least one rotor blade clamp ( 10 ) being applied around the outside of the rotor blade shell, by means of which at least one clamping force is exerted from the outside on the rotor blade shell, directed into the internal space ( 53 ), by at least one expansion device ( 30 ) being introduced into the internal space ( 53 ), by the expansion device ( 30 ) inside the internal space ( 53 ) being moved into at least one segment ( 26 ) of the rotor blade ( 20 ) around which the at least one rotor blade clamp ( 10 ) is applied, by the at least one expansion device ( 30 ) being expanded inside the at least one segment ( 26 ) until at least one outwardly-acting counteracting force is exerted from the inside on the rotor blade shell, which at least partially compensates the at least one clamping force.

2. The method as claimed in claim 1 , wherein a load is measured inside the at least one segment ( 26 ).

3. The method as claimed in claim 2 , wherein a deformation is measured inside the at least one segment ( 26 ).

4. The method as claimed in claim 1 , wherein the measurement values are supplied to a controller unit ( 40 ) and are evaluated there and control values are determined and supplied to the at least one expansion device ( 30 ), and the at least one expansion device ( 30 ) is expanded.

5. The method as claimed in claim 1 , wherein the rotor blade ( 20 ), together with the at least one expanded expansion device ( 30 ), is pulled up to the nacelle of a wind turbine, and mounted there, and the at least one rotor blade clamp ( 10 ) and the at least one expansion device ( 30 ) are then released.

6. The method as claimed in claim 5 , wherein the at least one expansion device ( 30 ) is secured to a rope, after mounting the rotor blade ( 20 ) is lowered with a tip ( 27 ), and the at least one expansion device ( 30 ) is pulled out of the internal space ( 53 ) on the rope after release of the expansion device.

Assignees

• Repower Systems Se
• Senvion Se

Inventors

• Bendel Urs

Classifications

• B23P15/02

  turbine or like blades from one piece · CPC title

• Y10T29/49316

  Impeller making · CPC title

• F03D13/10 Primary

  Assembly of wind motors; Arrangements for erecting wind motors · CPC title

• F05B2270/331

  Mechanical loads · CPC title

• Y10T29/53039

  with control means energized in response to activator stimulated by condition sensor · CPC title