Wind turbine comprising a segmented tower and foundation

Patent metadata

Field	Value
Publication number	US-2016305405-A1
Application number	US-201415100592-A
Country	US
Kind code	A1
Filing date	Dec 4, 2014
Priority date	Dec 6, 2013
Publication date	Oct 20, 2016
Grant date	—

Abstract

A wind turbine with a foundation and a tower with multiple tower segments, placed on the foundation is provided. The foundation has a tower base which is at least partially cast in the foundation. The tower base has at least two segments and a lower tower segment of the tower is tensioned together with the segments of the tower base, in particular via tensioning rods.

First claim

1 . A wind turbine comprising:
a foundation including a foundation material and a tower base that extends longitudinally and is at least partially embedded in the foundation material, the tower base includes at least two precast concrete segments; a tower including a lower tower segment; and tensioning rods, tensioning cables, or tensioning strands tensioning together the at least two precast concrete segments and the lower tower segment.

2 . The wind turbine according to claim 1 , wherein the tower base includes an upper segment that is conical shaped with a plurality of through openings, through holes or sheaths configured to receive the tensioning rods, tensioning cables, or tensioning strands,
wherein the through openings, through holes or sheaths extend parallel to a longitudinal direction of the tower base.

3 . The wind turbine according to claim 1 , wherein an external diameter of the lower tower segment is smaller than an external diameter of the lower end of the tower base.

4 . The wind turbine according to claim 1 wherein the foundation material is concrete, the wind turbine further comprising:
an anchor ring embedded in the concrete of the foundation as part of the tower base and tensions first ends of the tensioning rods, tensioning strands or tensioning cables, and
wherein second ends of the tensioning rods are tensioned to a flange coupled to an upper end of the tower base or to a lower end of the lower tower segment.

5 . The wind turbine according to claim 1 , wherein the tower includes a plurality of tower segments, the wind turbine comprising:
a fireproof seal fastened to one of the segments of the tower base or to one of the plurality of tower segments.

6 . The wind turbine according to claim 1 , wherein the tower includes a plurality of tower segments, the wind turbine comprising:
a projection on one of the at least two precast concrete segments of the tower base or the lower tower segment; and a fireproof seal bearing against the projection.

7 . A wind turbine tower, comprising:
a foundation including concrete and a tower base, the tower base having a first portion embedded in the concrete and a second portion extending out of the concrete, the tower base including a plurality of segments, the plurality of segments including a plurality of openings, sheaths or through holes; a plurality of tower segments supported by the foundation; and tensioning rods, tensioning strands or tensioning cables in the plurality of openings, sheaths or through holes of the plurality of segments, the tensioning rods, tensioning strands or tensioning cables having first ends coupled to the tower base and second ends coupled to one of the plurality of tower segments.

8 . The wind turbine tower according to claim 7 wherein the second ends of the tensioning rods, tensioning cables, or tensioning strands are coupled to a lowest one of the plurality of tower segments.

9 . The wind turbine tower according to claim 8 wherein an external diameter of the lowest one the plurality of tower segment is smaller than an external diameter of the plurality of segments of the tower base.

10 . The wind turbine tower according to claim 9 wherein the second ends of the plurality of tensioning rods, tensioning strands or tensioning cables are coupled directly to a flange, wherein the flange is coupled directly to the lowest one of the plurality of tower segments.

Assignees

• Wobben Properties Gmbh

Inventors

• Kraft Martin

Classifications

• E04H12/12 Primary

  of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements · CPC title

• E04H12/16

  Prestressed structures · CPC title

• F03D13/22 Primary

  Foundations specially adapted for wind motors · 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