Inflatable Sleeve Support for Wind Turbine Blade Maintenance
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Solution Overview
Problem
Existing maintenance methods for wind turbine blades are unsafe, time-consuming, and costly, particularly for offshore turbines, due to the difficulty in accessing blades at height and the need for complex maneuvering of large airships or installation of attachment devices.
Innovation Solution
A sleeve with inflatable parts that can be deflated and inflated to clamp around the blade, providing a stable support structure for maintenance crew, allowing easy installation and removal, and enabling safer, faster, and less costly maintenance without requiring special anchor points on the blade.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an airship is used to provide maintenance support for the blade, then maintenance can be performed at height, but safety risks increase and energy yield decreases due to neighboring turbines being taken out of operation
Solution Approach 1:
The support structure is divided into multiple inflatable segments (first inflatable segment, second inflatable segment, third inflatable segment) that can be independently inflated and positioned along the blade. This segmentation allows the maintenance structure to be distributed along the blade length, reducing the risk concentration and allowing maintenance at multiple locations simultaneously, thereby improving safety while maintaining accessibility.
Solution Approach 2:
The inflatable support structure can be applied to any wind turbine blade without requiring blade-specific modifications or taking other turbines offline. The structure is universally adaptable to different blade types and can be deployed independently on each turbine, eliminating the need to shut down neighboring turbines for maintenance operations.
2Ease of operation
If an airship is used to provide maintenance support, then maintenance can be performed at height, but the process becomes time-consuming and costly due to complex maneuvering requirements
Solution Approach 1:
The support structure utilizes inflatable segments that can be rapidly deployed and positioned using pneumatic inflation. This eliminates the complex maneuvering and positioning time associated with airships, as the inflatable segments can be quickly inflated and secured to the blade at the desired maintenance locations, significantly reducing maintenance time.
3Ease of operation
If attachment devices are installed on the blade for maintenance, then maintenance crew can be supported, but the blade must be modified at manufacturing time and existing turbines cannot be serviced
Solution Approach 1:
The invention changes the physical state of the support structure from rigid/permanent to inflatable/temporary. By using inflatable segments that can be deployed and deflated as needed, the system adapts to different blade types and configurations without requiring permanent modifications. This allows the same support structure to be universally applied across existing and future turbine models.
4Reliability
If the blade is taken down for maintenance, then safety risks are reduced, but operational time increases and costs increase especially for offshore turbines
Solution Approach 1:
The inflatable support structure acts as an intermediary between the maintenance crew and the blade. It provides a safe, stable working platform that is temporarily attached to the blade during maintenance operations. This intermediary structure enables safe maintenance at height without requiring blade removal, thereby maintaining both safety and productivity simultaneously.
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 inflatable sleeve system allows for safer, easier, and faster maintenance of wind turbine blades, reducing safety risks and operational costs, and is universally usable on various blades, including those already installed, without the need for complex maneuvering or special provisions.
Implementation Method 1
The sleeve (4) comprises at least one inflatable part (5-8) which is changeable between a deflated state and an inflated state
Data Source
AI summary
Device for forming a temporary support structure for maintenance crew for a blade of a wind turbine, the device comprising a sleeve configured to surround the blade, at least a longitudinal section thereof, wherein the sleeve comprises at least one inflatable part which is changeable between a deflated state and an inflated state when the sleeve surrounds the blade, wherein in the deflated state the sleeve is movable with respect to the blade for positioning the sleeve with respect to the blade, wherein in the inflated state the sleeve is configured to clamp the sleeve with respect to the blade, wherein, at least in the inflated state, the sleeve is configured to form a support structure along the blade for supporting maintenance crew for the blade thereon.