Wind Turbine Blade Anti-Icing Vibration Using Self-Gravity
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Solution Overview
Problem
Existing anti-icing devices for wind turbine blades require extra power as a driving force and necessitate complex mounting and wiring due to the rotating state of the blades, posing challenges in design and operation.
Innovation Solution
An anti-icing device utilizing a vibration unit with a mounting seat, excitation unit, and energy storage assembly that harnesses self-gravity to generate vibrations for ice removal, eliminating the need for external power and simplifying installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a physical anti-icing device based on vibration is used, then ice removal effectiveness is improved, but extra power is required as driving force
Solution Approach 1:
The device utilizes the rotational kinetic energy of the wind turbine blade itself to drive the vibration mechanism through a centrifugal force generator, eliminating the need for external power sources. The blade's rotation automatically activates the anti-icing function through self-powered vibration generation.
Solution Approach 2:
The patent replaces the traditional electric motor-driven vibration system with a mechanically-driven centrifugal force generator that converts the blade's rotational motion into vibrational motion, substituting an electric power system with a mechanical energy conversion system.
2Reliability
If a physical anti-icing device based on vibration is used, then ice removal effectiveness is improved, but mounting and wiring complexity increases due to rotating blade state
Solution Approach 1:
The device merges the anti-icing vibration function directly into the blade structure by mounting the centrifugal force generator and vibration transmission mechanism on the blade itself, combining the anti-icing function with the existing rotating component rather than adding separate mounted systems.
Solution Approach 2:
The patent extracts the power source requirement from the anti-icing device by utilizing the blade's inherent rotational energy, removing the need for separate power supply systems, control wiring, and mounting infrastructure that would otherwise be required.
3Reliability
If traditional anti-icing devices are used, then ice removal function is achieved, but mechanical wear and damage increase due to greater loads on mechanical parts
Solution Approach 1:
The device employs mechanical vibration generated by the centrifugal force generator to remove ice through vibrational forces, which reduces the impact loads on mechanical components compared to direct impact or heating methods, thereby minimizing mechanical wear and damage.
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 device effectively clears ice from wind turbine blades using gravitational potential energy, reducing mechanical wear and enhancing safety by automating the anti-icing process without additional power requirements.
Implementation Method 1
an energy storage assembly that is rotatably arranged on the support column, and two ends of the energy storage assembly are respectively connected to the excitation assembly and the drive assembly
Implementation Method 2
utilizing a vibration unit with a mounting seat, excitation unit, and energy storage assembly that harnesses self-gravity to generate vibrations for ice removal
Data Source
AI summary
Disclosed is an anti-icing device for a blade of a wind turbine generator system, which relates to the technical field of wind turbine generator systems. The device includes a vibration unit and an excitation unit. The vibration unit includes a mounting seat, a vibration assembly, and a support column. The excitation unit includes an excitation assembly, a drive assembly, an energy storage assembly, and a snap-fit assembly. The anti-icing device for a blade of a wind turbine generator system can be mounted conveniently and does not require extra power as a driving energy source.