Wind Turbine Blade Edge Separation Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wind turbine rotor blades are prone to separation along the leading or trailing edges due to bonding material issues, manufacturing defects, vibrations, and erosion, leading to potential complete blade failure if not detected early.
Innovation Solution
A monitoring system with sensors placed within the rotor blade's internal cavity to detect physical characteristics indicative of separation, such as light, noise, pressure, or distance changes between shell members, triggering an automatic response like generating an alarm or initiating preventative actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If bonding material is used to join shell members, then structural integrity is improved, but separation occurs due to bonding defects and vibrations
Solution Approach 1:
The patent applies preliminary action by installing sensors within the bonding material before the shell members are assembled and bonded together. This allows continuous monitoring of the bonding interface to detect separations early, preventing complete bond failure. The sensors are positioned to detect changes in distance, light, or acoustic signals that indicate separation between shell members, enabling preventive maintenance before catastrophic failure occurs.
2Measurement precision
If monitoring system is installed, then detection capability is improved, but device complexity increases
Solution Approach 1:
The patent applies the taking out principle by extracting the monitoring function from external complex monitoring systems and embedding simple sensors directly within the bonding material itself. This integration allows separation detection capability to be built into the bonding structure, reducing the need for external monitoring equipment and simplifying the overall system while maintaining high measurement precision for detecting shell member separations.
3Reliability
If sensors are placed within internal cavity, then early detection is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the bonding material into discrete sections, each containing individual sensors that monitor specific bond lines between shell members. This modular approach allows sensors to be installed in manageable segments during the bonding process, making manufacturing more feasible while enabling comprehensive early detection of separations at multiple critical locations along the blade structure.
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
Enables early detection of blade separations, preventing costly and timely complete blade failures by initiating corrective actions, such as stopping the turbine, thereby ensuring operational safety and reducing maintenance costs.
Implementation Method 1
the sensor is a light sensor configured to detect internal light within the rotor blade resulting from a separation along the respective edge
Implementation Method 2
the sensor may be an acoustic sensor configured within the internal cavity of the rotor blade to detect an increased noise level within the blade resulting from a separation along the respective edge
Implementation Method 3
the sensor may be a pressure sensor configured to detect a change in ambient pressure within the rotor blade resulting from a separation along the respective edge
Data Source
AI summary
A monitoring system and associated operational method are operatively configured with a wind turbine for detecting separation of shell members along an edge of a wind turbine rotor blade. The system includes any configuration of sensors disposed within an internal cavity of the rotor blade, with the sensor oriented relative to a leading or trailing edge of the blade and configured to detect a physical characteristic within the blade that is indicative of onset of a separation between the shell members along the monitored edge. A controller is configured to receive signals from the sensor and to initiate an automatic response to a detected separation.