Rotor Blade Lightning Conductor Cable Guide
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Solution Overview
Problem
Existing lightning protection systems for rotor blades are either technically complex or prone to lightning flashovers due to curved lightning conductor cables.
Innovation Solution
A rotor blade design featuring a guide component with a fastening means, such as a groove or sleeve, to securely anchor and guide the lightning conductor cable along the inner wall, preventing it from striking or bending during operation, and additional receptors along the rear edge to manage lightning strikes effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lightning conductor cable is allowed to run freely between the outlet point and the lightning receptor, then the installation is simpler, but the cable will strike the inner wall or bend during operation causing lightning flashovers
Solution Approach 1:
A guide component is introduced as an intermediary element between the lightning conductor cable and the rotor blade structure. This guide component provides a defined pathway that constrains the cable's position, preventing it from contacting the inner wall or bending excessively during operation, thereby eliminating the risk of lightning flashovers while maintaining installation simplicity.
Solution Approach 2:
The guide component is designed with a structure that allows flexible accommodation of the lightning conductor cable while maintaining proper positioning. The guide may incorporate flexible elements or a design that permits cable movement within safe limits, ensuring the cable remains constrained without requiring rigid fixation that would complicate installation.
2Reliability
If additional guides and fastening means are added to secure the lightning conductor cable, then the cable positioning is more stable, but the device complexity increases
Solution Approach 1:
The guide component combines multiple functions into a single integrated element: it provides mechanical guidance for the cable, structural support, electrical insulation, and anchoring capability. By merging these functions into one component rather than using separate elements for each function, the solution achieves stable cable positioning without significantly increasing overall system complexity.
Solution Approach 2:
The guide component is designed as a multi-functional element that serves several purposes simultaneously: it guides the cable along the correct path, provides electrical insulation between the cable and blade structure, offers mechanical support, and enables secure fastening. This universal design approach minimizes the number of separate components needed while achieving reliable cable positioning.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a rotor blade comprising: a connecting piece (3) and a lightning conductor cable (2, 2a) running along said connecting piece (3), one end of said lightning conductor cable being electrically connected to a receptor (4, 8); and a branch-off point (16, 20) on the connecting piece (3) from which the lightning conductor cable (2, 2a) branches off from the connecting piece (3), a guide being arranged on an inner wall of the rotor blade (10) between the branch-off point (16, 20) and the lightning receptor (4, 8), along which guide a portion of the lightning conductor cable (2, 2a) extends.