Wind Turbine Cable Holder With Elastic Clamping for Heavy Cables
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current cable fastening methods for wind turbines, such as plastic clips, cable stockings, or metal brackets, are inefficient and costly, particularly for high-weight cables, leading to potential damage and increased labor and maintenance complexity, especially with the increasing use of medium-voltage cables with higher unit weights.
Innovation Solution
A cable holder with a funnel-shaped cavity and an elastic insert that jams between the cable receptacle and the cable, providing a clamping effect to securely fasten cables, allowing them to be supported without damage and reducing the number of fastening elements needed, thus simplifying assembly and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If multiple plastic clips, cable stockings, or metal brackets are disposed on top of one another to support high cable weights, then the cable weight support capability is improved, but the device complexity and labor input increase significantly
Solution Approach 1:
The cable holder is divided into distinct functional segments: a support structure with vertical support surfaces, and separate elastic clamping elements that can be independently positioned. This segmentation allows the system to handle heavy cables through distributed support surfaces while using simple, replaceable clamping elements rather than multiple complex fastening devices.
Solution Approach 2:
The elastic elements change their physical parameters (compression force, positioning) to adapt to different cable weights and diameters. By adjusting the elastic compression force, the same cable holder structure can support varying cable weights without requiring multiple different fastening elements, thus reducing device complexity while maintaining support capability.
2Force
If multiple fastening elements are disposed on top of one another to support high cable weights, then the cable weight support capability is improved, but the labor input and disposal complexity increase significantly
Solution Approach 1:
The clamping function is extracted as separate, removable elastic elements from the main support structure. This allows the elastic elements to be easily installed and removed independently, significantly reducing installation and maintenance labor. The elastic elements can be replaced without disturbing the entire cable holder assembly, making servicing simple even for heavy cable applications.
Solution Approach 2:
The elastic elements automatically adjust and maintain clamping force on the cable without requiring manual adjustment or complex fastening mechanisms. The system is self-regulating, where the elastic compression naturally adapts to the cable diameter and weight, reducing the skill and time required for installation and maintenance operations.
3Force
If cable weights are supported by pedestals with S-shaped guides, then the cable weight is distributed into the pedestal, but the space requirement increases due to large minimum bending radii
Solution Approach 1:
Instead of using horizontal S-shaped guides that require significant lateral space, the invention transitions to vertical support surfaces and vertical elastic clamping. This dimensional change from horizontal to vertical orientation allows heavy cable support within the limited tower cross-sectional area, eliminating the need for large bending radii while still distributing cable weight effectively into the pedestal through the vertical support structure.
4Force
If pedestal devices with S-shaped guides are used to support cable weights, then the cable weight distribution is improved, but the installation complexity increases
Solution Approach 1:
The cable holder is segmented into a simple vertical support structure and separate elastic clamping elements. This segmentation eliminates the need for complex S-shaped guide geometries and pedestal modifications, allowing for straightforward installation using basic components that can be easily positioned and secured without complex alignment procedures.
Solution Approach 2:
The invention changes the geometric parameters from complex S-shaped curves with large bending radii to simple vertical surfaces and linear elastic elements. This parameter simplification dramatically reduces installation complexity while maintaining the ability to distribute cable weights effectively through the vertical support structure into the pedestal.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The cable holder effectively absorbs high cable weights, reducing the number of fastening elements required, minimizing damage, and simplifying assembly and maintenance, while ensuring secure and damage-free cable operation, thereby enhancing the economic viability of wind turbine cable fastening.
Implementation Method 1
an elastic insert (240) disposed within the funnel-shaped cavity (221); wherein the cable receptacle (220) and the elastic insert (240) are disposed and configured in such a manner that the cable (120) can extend through the funnel-shaped cavity (221), and the elastic insert (240) is able to be jammed between the cable receptacle (220) and the cable (120)
Implementation Method 2
The cable holder is particularly suitable for a cable of a wind turbine that has a weight of more than 6 kg/m, preferably more than 8 kg/m, in particular more than 9 kg/m. A 30 m portion of a cable with a linear unit weight of 9 kg has a weight of 270 kg. Weights of this type can typically not be absorbed by the cable stockings, collars or metal brackets usually used.
Data Source
AI summary
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.