Adjustable Wind Turbine Blade Access Platform
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Solution Overview
Problem
Accessing the tip of a wind turbine blade from below is challenging due to its larger distance from the tower compared to the root, making maintenance difficult and time-consuming, especially in adverse weather conditions.
Innovation Solution
A blade access arrangement with an adjustable platform that can switch between tower and blade guidance, featuring sub-platforms, a linking system, and an enclosure, allowing safe and efficient access to the blade by guiding it along the tower and blade, and enabling maintenance in poor weather.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the platform is lifted along the tower to reach the blade tip, then the blade can be accessed, but the operation becomes challenging and time-consuming due to the large distance and adverse weather conditions
Solution Approach 1:
The platform is designed to be dynamically adjustable between two configurations: an open configuration for approaching the blade and a closed configuration for maintenance work. This dynamic transformation enables the platform to adapt to different operational phases, reducing the time required to access the blade tip while maintaining operational safety and comfort during maintenance activities
2Ease of operation
If the platform is moved close to the blade for access, then maintenance can be performed, but the platform must navigate obstructions and maintain stability
Solution Approach 1:
The platform dynamically switches between open and closed configurations to navigate different operational zones. In the open configuration, it can move freely toward the blade; in the closed configuration, it maintains stability for maintenance work, thus ensuring reliability while achieving accessibility
Solution Approach 2:
The blade itself serves as an intermediary guiding element. The blade guide means use the blade's structure to guide the platform along its path, allowing the platform to navigate past obstructions and maintain stable positioning without requiring complex active control systems
3Object-affected harmful factors
If the platform is designed to enclose the blade, then maintenance can be performed in poor weather conditions, but the platform structure becomes more complex
Solution Approach 1:
The enclosure is integrated into the dynamic platform structure, opening up during approach and closing during maintenance. This dynamic enclosure provides weather protection only when needed, reducing overall structural complexity compared to a permanently enclosed design while still enabling protected maintenance operations
Data Source
Figure 1a~1b
Figure 2a~2c
Figure 3a~3c
AI summary
Blade access arrangement for a rotor blade of a wind power plant A blade access arrangement (1) for a rotor blade (2) of a wind power plant having a tower (4) is described, the arrangement (1) comprising a platform (10) having blade guide means (12, 13) for guiding the platform against the blade and tower guide means (14) for guiding a platform (10) against the tower. Such a blade access arrangement should allow a safe access to the blade. To this end the platform 10 is adjustable in an open configuration, in which the blade can enter the blade guide means, (12, 13), and in a closed configuration, in which the platform (10) is guided by the blade (2).