Arrangement with a concrete foundation and a tower and a method for erecting a tower

Patent metadata

Field	Value
Publication number	US-2016312431-A1
Application number	US-201415106236-A
Country	US
Kind code	A1
Filing date	Nov 25, 2014
Priority date	Dec 18, 2013
Publication date	Oct 27, 2016
Grant date	—

Abstract

An arrangement with a concrete foundation and a tower for supporting a nacelle of a wind energy plant wherein the tower comprises a number of tower segments which are arranged along a tower axis and at least an uppermost tower segment comprises a head flange and a foot flange, wherein an uppermost tower segment of the number of tower segments is formed as a steel element; and a number of tension or traction wires braces the concrete foundation with the head flange of the uppermost tower segment under tensile stress. A method for erecting a tower for supporting a nacelle of a wind energy plant and to a wind energy plant comprising an arrangement according to the present embodiments.

First claim

1 . An arrangement comprising:
a concrete foundation; a tower for supporting a nacelle of a wind energy plant, wherein the tower comprises at least one tower segment arranged along a tower axis and comprises a head flange and a foot flange, wherein the at least one tower segment is formed as a steel element; and, a plurality of tension or traction wires bracing the concrete foundation with the head flange of the tower segment under tensile stress.

2 . The arrangement according to claim 1 , wherein the at least one tower is a single tower segment which is arranged with the foot flange on the concrete foundation.

3 . The arrangement according to claim 1 wherein the at least one tower segment is an uppermost tower segment of a plurality of tower segments arranged along the tower axis one above the other on the concrete foundation, wherein each of the plurality of tower segments comprise a head flange and a foot flange.

4 . The arrangement according to claim 1 wherein the plurality tension or traction wires are five to ten tension or traction wires that brace the concrete foundation with the head flange of the at least one tower segment under tensile stress and are spaced equidistantly relative to one another.

5 . The arrangement according to claim 3 wherein at least one of the head flange and the foot flange of at least one of the plurality of tower segments comprises bores.

6 . The arrangement according to claim 3 wherein a diameter of at least one of the plurality of tower segments becomes smaller upwards along the tower axis, wherein a part of an outer side of one of the plurality of tower segments includes with the tower axis an angle of between 1° and 10°.

7 . The arrangement according to claim 1 wherein the at least one tower segment is arranged adjacent to the concrete foundation and is a concrete segment.

8 . The arrangement according to claim 3 wherein at least one of the head flange and the foot flange of the uppermost tower segment is formed L-shaped or T-shaped.

9 . The arrangement according to claim 3 wherein the concrete foundation and a lowermost tower segment are formed with positive engagement in one another.

10 . The arrangement according to claim 9 wherein the concrete foundation and the lowermost tower segment are connected releasable connecting means.

11 . The arrangement according to claim 3 wherein each of the plurality of tension or traction wires comprise:
a tie rod arranged on the head flange of the uppermost tower segment, and
a fixed anchor arranged on the concrete foundation,
wherein the tie rod has engagement means, wherein upon actuation of the engagement means, the respective tension or traction wire is placed under tensile stress.

12 . The arrangement according to claim 1 wherein the tower has a height of at least 70 m.

13 . A method for erecting a tower for supporting a nacelle of a wind energy plant, the method comprising the following steps:
placing a first tower segment on a concrete foundation; connecting the concrete foundation and the first tower segment by releasable connecting means; and bracing the concrete foundation with a uppermost tower segment by a plurality of tension or traction wires, wherein the tension or traction wires couple the concrete foundation with the head flange of the uppermost tower segments, wherein the uppermost tower segment is formed as a steel element.

14 . The method for erecting a tower for supporting a nacelle of a wind energy plant according to claim 13 , wherein the method comprises prior to bracing the additional following steps:
setting up at least a second tower segment on the first tower segment; and connecting the first tower segment to the second tower segment by releasable connecting means.

15 . A wind energy plant comprising:
a tower; a concrete foundation; and a nacelle including a rotor supported by the tower, wherein a rotor with three rotor blades is arranged on the nacelle, wherein the rotor during operation of the wind energy plant is set in a rotational movement by the wind and drives a generator, wherein the tower and the concrete foundation form an arrangement according to claim 1 .

16 . The arrangement according to claim 1 wherein the head flange and the foot flange of the at least one tower segment comprises bores.

17 . The arrangement according to claim 3 wherein the plurality tension or traction wires are five to ten tension or traction wires that brace the concrete foundation with the head flange of the uppermost tower segment under tensile stress and are spaced equidistantly relative to one another.

Assignees

• Wobben Properties Gmbh

Inventors

• Coordes Thomas

Classifications

• F03D9/25

  the apparatus being an electrical generator (F03D9/22 takes precedence) · CPC title

• E04H12/342

  Arrangements for stacking tower sections on top of each other (E04H12/344 takes precedence) · CPC title

• E02D27/425 Primary

  specially adapted for wind motors masts (wind motors per se F03D1/00) · CPC title

• Y02E10/728

  Onshore wind turbines · CPC title

• E04H12/08

  of metal · CPC title