Wind Turbine Blade Lightning Protection Sockets

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Solution Overview

Problem

Conventional lightning protection systems for wind turbines are difficult to install and require significant post-processing work, involving complex procedures such as drilling and tapping receptor blocks or cutting holes in blade walls, which are time-consuming and labor-intensive.

Innovation Solution

The proposed lightning protection system incorporates sockets molded into blade walls during formation, allowing for easy installation of receptor plugs and elements without the need for post-processing, using non-conductive materials and customizable tip receptor mounts with bonding features to secure components efficiently.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional lightning protection systems use tip receptors or conductor blocks requiring drilling and tapping, then reliable lightning protection is achieved, but installation complexity and time increase significantly

Engineering Contradiction:
Improvelightning protection reliabilityVSAvoidinstallation complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-forming sockets within the blade structure during manufacturing, so that receptor mounting locations are prepared in advance. This eliminates the need for post-manufacturing drilling and tapping operations, reducing installation complexity while maintaining reliable lightning protection through pre-positioned, precisely located sockets.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent segments the lightning protection system into modular components: pre-formed sockets integrated into the blade, separate receptor units, and standardized mounting mechanisms. This segmentation allows independent manufacturing and assembly, simplifying installation while ensuring reliable electrical connection for lightning protection.

Inventive Principle:
Principle #1Segmentation

2Reliability

If conventional systems require drilling holes in blade walls and tapping threads, then secure receptor mounting is achieved, but installation time and labor intensity increase

Engineering Contradiction:
Improvereceptor mounting securityVSAvoidinstallation efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent applies preliminary action by pre-forming sockets with integrated mounting features during blade manufacturing. The sockets are prepared in advance with precise geometry and positioning, eliminating the need for time-consuming drilling and tapping operations during installation, thereby significantly improving installation efficiency while maintaining secure receptor mounting.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If conventional approaches use multiple receptor disks at various blade points, then comprehensive lightning protection coverage is achieved, but system complexity and installation difficulty increase

Engineering Contradiction:
Improvelightning protection coverageVSAvoidinstallation ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent segments the lightning protection system into multiple standardized receptor units that can be independently installed at various blade locations to achieve comprehensive coverage. Each receptor uses the same pre-formed socket interface, standardizing the installation process across multiple points and simplifying operations while maintaining reliable protection coverage.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent applies universality by designing a standardized socket-receptor interface that can be used at multiple blade locations and for different receptor types. This universal mounting system allows the same installation procedure to be replicated across multiple receptor points, achieving comprehensive lightning protection coverage while maintaining ease of installation.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11078889B2Lightning protection system and method for wind turbine blades
Publication Date: 2021.08.03 ERICO INTERNATIONAL CORP
  • US11078889B2 patent drawing
  • US11078889B2 patent drawing
  • US11078889B2 patent drawing

AI summary

A method of installing a lightning protection system can include forming a blade wall of a wind turbine to at least partly include a socket. A part of the socket can be removed, after forming the blade wall, to provide an opening through the blade wall. A receptor plug and a receptor element can be secured to the socket at the opening.