System for assembling and/or disassembling a wind turbine electric generator
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Solution Overview
Problem
The existing methods for assembling and disassembling wind turbine rotating electric machines are inefficient due to geometric constraints and cramped working conditions when inserting and extracting active segments on the main frame side.
Innovation Solution
A method and system that utilize an insertion and extraction device connected to the blade assembly, allowing axial insertion and extraction of active segments, with a safety cell and hoisting mechanism to position the device for safe and efficient operation, eliminating geometric constraints and improving handling of heavy segments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If active segments are inserted and extracted on the main frame side, then the rotating electric machine can be assembled and disassembled, but geometric constraints and cramped working conditions impair speed and efficiency
Solution Approach 1:
The patent inverts the conventional approach by inserting and extracting active segments from the blade assembly side instead of the main frame side. This reversal eliminates the geometric constraints and cramped working conditions that occur when accessing segments from the main frame, thereby improving both productivity and ease of operation.
Solution Approach 2:
The patent changes the dimensional approach by utilizing the radial dimension through the blade assembly to access active segments, rather than working axially from the main frame side. This dimensional shift provides better accessibility and working space for segment insertion and extraction operations.
2Reliability
If a complex hoisting and positioning system is implemented to improve safety and efficiency, then operator safety and positioning precision improve, but device complexity increases
Solution Approach 1:
The blade assembly serves multiple functions: it generates power, supports the rotor, and acts as a positioning mechanism for the insertion and extraction device. By rotating the blade assembly, the system can selectively position the device near any active segment, eliminating the need for complex independent positioning systems while maintaining precision and safety.
Solution Approach 2:
The wind turbine's own blade assembly is utilized to perform the positioning function for segment insertion and extraction. The blade assembly's rotation capability is leveraged to bring the insertion and extraction device into position, making the system self-sufficient and avoiding additional complex positioning mechanisms.
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
Facilitates faster and more efficient assembly and disassembly of wind turbine rotating electric machines by simplifying the process, ensuring operator safety, and optimizing the positioning of the insertion and extraction device along the blade assembly.
Implementation Method 1
a hoisting device, which is mounted on the wind turbine, extends through the wind turbine, and, in certain such embodiments, comprises a winch fixed to the wind turbine, and a cable extending through the rotating electric machine and the blade assembly
Implementation Method 2
selectively positioning the insertion and extraction device close to one of the active segments by rotating the blade assembly
Data Source
AI summary
A method of assembling and/or disassembling a rotating electric machine of a wind turbine having a vertical structure; a main frame fitted to the top of the vertical structure; a blade assembly fitted to the main frame to rotate about a rotation axis; and a tubular rotating electric machine having a plurality of axial active segments; the method including inserting and/or extracting the active segments axially on the blade assembly side.