Method for installing rotor blades of a wind turbine

Patent metadata

Field	Value
Publication number	US-11933266-B2
Application number	US-202017440152-A
Country	US
Kind code	B2
Filing date	Mar 18, 2020
Priority date	Mar 19, 2019
Publication date	Mar 19, 2024
Grant date	Mar 19, 2024

Abstract

Thus there is provided a method of installing rotor blades of a wind turbine to a rotor hub of the wind turbine. The wind turbine has a tower having a tower longitudinal axis. The rotor hub has a first, a second and a third rotor blade connection. The rotor hub is rotated until the first rotor blade connection is at an angle of 90° or 270° with respect to the tower longitudinal axis. The first rotor blade is lifted substantially horizontally and fixed to the rotor blade connection. The rotor hub is rotated so that the second rotor blade connection is at an angle of 90° or 270° with respect to the tower longitudinal axis. The second rotor blade is lifted substantially horizontally and fixed to the second rotor blade connection. The rotor hub is further rotated until the third rotor blade connection is at an angle of 60° or 300° with respect to the tower longitudinal axis. The third rotor blade is lifted at an angle of α=30° with respect to a horizontal and fixed to the third rotor blade connection.

First claim

The invention claimed is:

1. A method of installing rotor blades of a wind turbine on a rotor hub of the wind turbine, wherein the wind turbine has a tower with a tower longitudinal axis, wherein the rotor hub has first, second, and third rotor blade connections, the method comprising:
rotating the rotor hub until the first rotor blade connection is at an angle of 90° or 270° with respect to the tower longitudinal axis,
lifting the first rotor blade substantially horizontally and fixing the first rotor blade to the first rotor blade connection,
rotating the rotor hub so that the second rotor blade connection is at an angle of 90° or 270° with respect to the tower longitudinal axis,
lifting the second rotor blade substantially horizontally and fixing the second rotor blade to the second rotor blade connection,
rotating the rotor hub until the third rotor blade connection is at an angle of 60° or 300° with respect to the tower longitudinal axis,
lifting the third rotor blade at an angle of 30° with respect to a horizontal, and
fixing the third rotor blade to the third rotor blade connection.

2. The method according to claim 1 wherein the first, second, and third rotor blades have a length that is greater than 50 meters, and wherein the rotor hub is at a height that is greater than 100 meters.

Assignees

• Wobben Properties Gmbh

Inventors

• Rubner Florian
• Schumann Klaas
• Fettback Felix
• Meyer-Stöver Wolfgang
• Knoop Frank
• Bünting Klaus
• Zimmermann Frank
• Hüller Martin
• Rehberger Thomas

Classifications

• F03D13/10 Primary

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

• B66C1/108

  for lifting parts of wind turbines · CPC title

• B66C13/08

  for depositing loads in desired attitudes or positions · CPC title

• F03D1/0658

  Arrangements for fixing wind-engaging parts to a hub · CPC title

• F05B2230/604

  using positioning or alignment devices for aligning or centering, e.g. pins · CPC title