Cable holder for a cable of a wind turbine, and method

Patent metadata

Field	Value
Publication number	US-11846272-B2
Application number	US-202017609337-A
Country	US
Kind code	B2
Filing date	Apr 8, 2020
Priority date	May 8, 2019
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

A cable holder, in particular for a cable of a wind turbine, to a cable harness, to a tower, to a wind turbine and also to a method for fastening a cable. In particular, a cable holder, in particular for a cable of a wind turbine, preferably for a medium-voltage cable connected to a medium-voltage transformer of a wind turbine, comprising a cable mount with a funnel-like cavity and also comprising an elastic insert, which is arranged within the funnel-like cavity, wherein the cable mount and the elastic insert are arranged and designed such that the cable can extend through the funnel-like cavity and the elastic insert can be clamped in between the cable mount and the cable.

First claim

The invention claimed is:

1. A cable holder for a cable of a wind turbine, comprising:
a cable receptacle having a funnel-shaped cavity;
an elastic insert disposed within the funnel-shaped cavity;
wherein the cable receptacle and the elastic insert are disposed and configured in such a manner that the cable is configured to extend through the funnel-shaped cavity, and the elastic insert is configured to be held between the cable receptacle and the cable; and
a holding element for disposal on a tower, the cable receptacle being coupled to the holding element;
wherein the holding element has an introduction groove having an introduction width that is transverse to an introduction direction, and
wherein the cable receptacle has an upper end and a lower end,
wherein the introduction width is smaller than a diameter of the cable receptacle at the upper end such that a form-fitting connection in a vertical direction is configured between the holding element and the cable receptacle.

2. The cable holder as claimed in claim 1 , wherein the cable receptacle has an introduction opening at a circumference, and wherein the introduction opening is configured to receive a portion of the cable into the funnel-shaped cavity.

3. The cable holder as claimed in claim 1 , wherein:
the cable receptacle has an upper portion and a lower portion, an upper dimension of the funnel-shaped cavity in the upper portion being larger than a lower dimension of the funnel-shaped cavity in the lower portion; and
the funnel-shaped cavity in the upper portion or in the lower portion or in both the upper and lower portions have an annular cross section.

4. The cable holder as claimed in claim 3 , wherein:
the upper portion is adjacent to the upper end, and wherein the lower portion is adjacent to the lower end; and
the cable receptacle has an introduction opening extending from the upper end to the lower end and is configured so that the cable is able to be introduced into the funnel-shaped cavity through the introduction opening.

5. The cable holder as claimed in claim 4 , comprising:
a funnel closure for closing the introduction opening;
wherein a shape of the funnel closure corresponds to a shape of the introduction opening.

6. The cable holder as claimed in claim 5 , wherein:
the cable receptacle is a first shell segment having a first circumferential extent that is less than 360° in the circumferential direction and forms the introduction opening; and
the funnel closure is a second shell segment having a second circumferential extent, the first circumferential extent and the second circumferential extent together being configured to surround the cable.

7. The cable holder as claimed in claim 1 , wherein:
the cable receptacle and/or the elastic insert each have an annular cross section; and
an external circumferential face of the elastic insert is disposed on an internal circumferential face of the cable receptacle.

8. The cable holder as claimed in claim 1 , wherein:
the elastic insert is tubular or funnel-shaped; and/or
the elastic insert is a rubber insert; and/or
the cable holder is configured to hold a cable connected to a voltage transformer of the wind turbine.

9. The cable holder as claimed in claim 1 , wherein:
the elastic insert has a slot; and
the cable holder has a cable passage axis, a direction of main extent of the slot being aligned so as to be substantially parallel to the cable passage axis.

10. The cable holder as claimed in claim 1 , wherein the cable receptacle is rotatably disposed on the holding element.

11. A cable harness for a wind turbine, comprising:
a cable having a cable diameter;
the cable holder as claimed in claim 1 ;
wherein the cable extends through the cable holder;
wherein the cable receptacle in a longitudinal direction extends from the upper end to the lower end; and
wherein a lower diameter of the cable receptacle relative to the cable diameter is sized in such a manner that the elastic insert is jammed between the cable receptacle and the cable such that a movement of the cable, directed from the upper end toward the lower end of the cable receptacle, is substantially prevented.

12. The cable harness as claimed in claim 11 , wherein a first coefficient of friction between the cable receptacle and the elastic insert is lower than a second coefficient of friction between the elastic insert and the cable.

13. The cable harness as claimed in claim 11 , wherein the cable has a cable weight of more than 6 kg/m.

14. A tower of a wind turbine, comprising the cable harness as claimed in claim 11 .

15. A wind turbine, comprising:
the tower as claimed in claim 14 ; and
a nacelle on the tower.

16. A tower of a wind turbine, comprising:
two or more cable holders as claimed in claim 1 ; and
wherein the two or more cable holders are spaced apart from each other by more than 20 meters.

17. A method for fastening a cable in a tower of a wind turbine, the method comprising:
introducing the cable into a cable receptacle having a funnel-shaped cavity; and
disposing an elastic insert in an intermediate space between the cable receptacle and the cable such that the elastic insert at least in portions bears on the cable and the cable receptacle,
wherein the cable receptacle has an upper end and a lower end,
a holding element for disposal on the tower, wherein the cable receptacle is coupled to the holding element,
wherein the holding element has an introduction groove having an introduction width that is transverse to an introduction direction, and
wherein the introduction width is smaller than a diameter of the cable receptacle at the upper end such that a form-fitting connection in a vertical direction is configured between the holding element and the cable receptacle.

18. The method as claimed in claim 17 , the method comprising:
closing an introduction opening of the cable receptacle with a funnel closure; and/or
rotating the cable receptacle in such a manner that the introduction opening faces a tower wall; and/or
de-stressing the cable in a vertical direction such that at least part of a weight of the cable is held by a friction force acting between the cable and the elastic insert.

Assignees

• Wobben Properties Gmbh

Inventors

• Biehle Stefan

Classifications

• F03D80/85 Primary

  Cabling · CPC title

• H02G3/0481 Primary

  with a circular cross-section (H02G3/0468, H02G3/0475 take precedence) · CPC title

• H02G3/32

  using mounting clamps · CPC title

• F05B2240/85

  Electrical connection arrangements · CPC title

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title