Wind Turbine Mast Adjustment Apparatus for Offshore Maintenance
Solution Overview
Problem
The inspection and maintenance of offshore wind turbines pose challenges due to harsh environmental conditions and the need to expose personnel to high and dangerous heights, requiring a safer and more efficient method for accessing and adjusting wind turbine systems.
Innovation Solution
An apparatus and method involving a buoyant structure with a jacking mechanism and locking system that allows the wind turbine mast to be raised or lowered, enabling secure and safe access to the rotor blades, nacelle, and engine room, reducing exposure to hazardous conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a third party crane barge is used to hoist personnel and equipment to wind turbines at great heights, then inspection and maintenance can be performed, but personnel are exposed to harsh environmental conditions and dangerous heights
Solution Approach 1:
Instead of hoisting personnel upward to reach the wind turbine, the invention inverts the approach by lowering the wind turbine mast downward to a maintenance platform at water level. This reversal eliminates the need for personnel to work at great heights and exposes them to safe environmental conditions while maintaining the ability to perform inspection and maintenance tasks.
Solution Approach 2:
The invention introduces a maintenance platform as an intermediary structure between the wind turbine and the crane barge. This platform serves as a safe intermediate working environment where personnel can access the lowered mast components without being exposed to the harsh offshore conditions at great heights, effectively mediating between the turbine and the safe working environment.
2Reliability
If the wind turbine mast is lowered to a maintenance platform, then personnel safety is improved, but additional apparatus and time are required for lowering and raising operations
Solution Approach 1:
The invention incorporates preliminary action by pre-positioning the maintenance platform at water level before maintenance is needed and having the lowering/raising apparatus ready on the crane barge. This allows the mast to be quickly lowered to the pre-prepared platform when maintenance is required, minimizing downtime compared to setting up temporary structures or equipment during the maintenance event.
Solution Approach 2:
The invention makes the mast dynamic by enabling it to change position between its operational elevated state and a lowered maintenance state. This dynamic capability allows the system to adapt to different operational requirements, providing quick access for maintenance while maintaining normal operational height, thereby balancing safety improvements with minimal impact on maintenance scheduling.
3Ease of operation
If a jacking mechanism and locking system are added to the apparatus, then the mast can be securely raised and lowered, but the device complexity increases
Solution Approach 1:
The crane barge serves multiple functions: it provides lifting capability for the mast, acts as a support platform for the lowering/raising apparatus, and functions as the maintenance platform itself. By making the crane barge multi-functional, the invention reduces the need for separate dedicated structures for each function, thereby managing device complexity while maintaining secure operational capabilities.
Solution Approach 2:
The invention merges the lowering mechanism, locking system, and maintenance platform into an integrated assembly that works together as a unified system. The jacking mechanism and locking system are combined with the platform structure rather than being separate additions, reducing overall complexity while ensuring secure raising and lowering operations through coordinated functionality.
Data Source
AI summary
According to embodiments of the present invention, an apparatus for adjusting a wind turbine system is provided. The apparatus includes a structure including a top surface opening and a bottom surface opening opposite to the top surface opening, the structure configured to receive a mast of the wind turbine system through the top surface opening and the bottom surface opening; a jacking mechanism operable to raise or lower the structure with respect to the mast; and a locking mechanism configured to releasably secure the structure to the wind turbine system. According to further embodiments, a mast of a wind turbine system, a system including the apparatus and the mast, and a method for adjusting a wind turbine system are also provided.