Wind Turbine Blade RF Positioning for Ballast Accuracy
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Solution Overview
Problem
Modern wind turbine blades pose challenges in accurately locating internal components like ballast tanks during assembly and maintenance due to their large size, leading to potential inaccuracies and damage during the ballasting process.
Innovation Solution
The integration of RF position-identification means, such as RFID chips, allows for precise determination of reference positions within the blade shell, enabling accurate drilling and filling of ballast tanks without invasive methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a simple 'Tap test' is used to locate blade features, then the method is simple and quick, but the location accuracy is insufficient leading to potential drilling errors
Solution Approach 1:
The patent replaces the mechanical 'Tap test' method with an electromagnetic RFID detection system. The RFID reader communicates wirelessly with RFID tags attached to blade features, eliminating the need for physical tapping and listening devices, thereby significantly improving measurement precision while maintaining operational simplicity.
Solution Approach 2:
The patent introduces RFID tags as intermediary objects attached to blade features. These tags serve as mediators between the detection system and the blade features, enabling accurate wireless identification of feature locations without direct physical contact or complex mechanical detection procedures.
2Productivity
If drilling is performed without precise location identification, then the process is faster, but the risk of damaging internal components increases
Solution Approach 1:
The patent applies RFID tags to blade features before the ballasting process begins. This preliminary action of marking feature locations enables the drilling operation to proceed quickly with confidence, as the precise locations are already identified, thereby maintaining high productivity while eliminating the risk of damaging internal components through misplaced drilling.
3Manufacturing precision
If traditional ballasting methods are used without precise feature location, then equipment and procedures are simple, but the precision of ballast tank positioning is poor
Solution Approach 1:
The patent replaces traditional mechanical measurement and positioning methods with an electromagnetic RFID-based positioning system. RFID tags attached to the ballast tank and blade features enable precise wireless determination of tank position and orientation, significantly improving manufacturing precision while the portability of RFID readers keeps the added complexity manageable.
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
This solution ensures accurate and non-invasive location of ballast tanks and other internal features, enhancing the precision and safety of the ballasting process, reducing the risk of damage and improving maintenance efficiency.
Implementation Method 1
a wind turbine blade... provided with an RF position-identification means configured for detection by an RF detection means external to the blade to enable determination of a reference position for the blade and/or the blade feature
Data Source
AI summary
A wind turbine blade comprising a blade shell that extends in a spanwise direction from a root end of the blade to a tip end of the blade, the blade shell defining an internal blade volume within which at least one blade feature is located, the blade being provided with an RF position-identification means configured for detection by an RF detection means external to the blade to enable determination of a reference position for the blade and/or the blade feature. Aspects of the invention also relate to a method of detecting a reference position for a wind turbine blade.