Liquid damper

Patent metadata

Field	Value
Publication number	US-2023407843-A1
Application number	US-202318208037-A
Country	US
Kind code	A1
Filing date	Jun 9, 2023
Priority date	Jun 15, 2022
Publication date	Dec 21, 2023
Grant date	—

Abstract

A liquid damper for a wind turbine tower includes a damper housing formed from a horizontal lower annulus, a horizontal upper annulus, an essentially cylindrical outer vertical wall and an essentially cylindrical inner vertical wall, wherein the outer diameter of the damper corresponds to the interior diameter of the tower; an operational volume of liquid contained in the damper; and an arrangement of vertical ribs mounted to a vertical wall of the damper. Further provided is a method of assembling a wind turbine.

First claim

1 . A liquid damper for a wind turbine tower, comprising
a damper housing formed from a horizontal lower annulus, a horizontal upper annulus, an essentially cylindrical outer vertical wall and an essentially cylindrical inner vertical wall, wherein the outer diameter of the damper corresponds to the interior diameter of the tower; an operational volume of liquid contained in the damper; and an arrangement of vertical ribs mounted to a vertical wall of the damper.

2 . The liquid damper according to claim 1 , comprising at least four ribs or at least six ribs, secured to a vertical wall of the damper.

3 . The liquid damper according to claim 1 , wherein a rib comprises an upright portion mounted to a vertical wall of the damper, a radial portion mounted to a horizontal annulus of the damper, and a curved transition between the upright portion and the radial portion of a rib.

4 . The liquid damper according to claim 3 , wherein the curved transition comprises a rounded cut-out.

5 . The liquid damper according to claim 1 , wherein a rib comprises a tube attached to the upright portion.

6 . The liquid damper according to claim 1 , wherein the radial extension of a rib is at most 50% of the interior width of the damper.

7 . The liquid damper according to claim 1 , comprising a plurality of bulkheads, wherein a bulkhead is shaped to partition the damper.

8 . The liquid damper according to claim 1 , wherein the upper annulus of the damper comprises a number of access openings.

9 . The liquid damper according to claim 1 , comprising a removable cover for each access opening.

10 . A wind turbine comprising
a tower with a height of at least 120 m; a rotor nacelle assembly with a mass of at least 700 T, installed on the tower; an aerodynamic rotor with a diameter of at least 200 m; and the liquid damper according to claim 1 installed at an upper level of the tower.

11 . The wind turbine according to claim 10 , wherein the outer vertical wall of the liquid damper is formed by an annular section of the wind turbine tower.

12 . The wind turbine according to claim 10 , comprising a plurality of dampers arranged in vertical stack.

13 . The wind turbine according to claim 12 , comprising a gap of at least 1.5 m between adjacent dampers.

14 . A method of assembling a wind turbine, which method comprises steps of installing the liquid damper according to claim 1 in an upper level of a wind turbine tower;
adjusting a configuration of the liquid damper for tower transport;
placing the wind turbine tower in an upright position at an interim site;
transporting the tower to an installation site;
adjusting a configuration of the liquid damper for wind turbine operation; and
mounting a rotor nacelle assembly onto the tower.

15 . The method according to claim 14 , wherein the step of installing the liquid damper in the tower comprises the steps of:
A) securing an annular arrangement of ribs to the interior surface of the tower; B) assembling the damper housing by:
attaching the outer perimeter of the upper annulus to the tower and attaching the inner perimeter of the upper annulus to the upper rim of the inner vertical wall; and attaching the outer perimeter of the lower annulus to the tower and attaching the inner perimeter of the lower annulus to the lower rim of the inner vertical wall; and
C) filling an operational damping quantity of liquid into the damper.

Assignees

• Siemens Gamesa Renewable Energy As

Inventors

• Klaassen Jacobus
• Lenssen Matthias
• Moeskjaer Martin
• Seidel Marc

Classifications

• F03D13/20 Primary

  Arrangements for mounting or supporting wind motors; Masts or towers for wind motors · CPC title

• F05B2260/964

  by damping means · CPC title

• F05B2240/912

  on a tower · CPC title

• F16F7/1034

  of movement of a liquid · CPC title

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title