Variable Nacelle Rotor Hub Interface Using Segmented Collar
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing interface between the nacelle and rotor hub of wind turbines, typically designed with an integrated collar, becomes inadequate as rotor hub sizes increase, requiring frequent adjustments in nacelle cladding dimensions and tooling changes, which is inefficient and costly.
Innovation Solution
A separate, peripheral component with angled flanges is used to create a variable interface, adapting in shape and diameter to fit assembly openings in both the nacelle and rotor hub casings, allowing for connection via known methods like screws or adhesives, thus replacing the integrated collar and maintaining the shape of adjacent nacelle components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an integrated collar design is used in the nacelle cladding, then the interface between nacelle and rotor hub is sealed, but the nacelle cladding must be redesigned and new tooling created for each rotor hub size
Solution Approach 1:
The collar is separated from the nacelle cladding and designed as an independent component. This segmentation allows the collar to be customized for different rotor hub sizes while the nacelle cladding remains standardized, resolving the contradiction between maintaining reliable sealing and adapting to various rotor hub dimensions.
Solution Approach 2:
The separate collar acts as an intermediary component between the nacelle cladding and rotor hub. It provides the sealing function at the interface while allowing the nacelle cladding to maintain a consistent design across different turbine configurations, thus enabling adaptability without compromising sealing reliability.
2Manufacturing precision
If the nacelle cladding is redesigned for each rotor hub size, then the interface fits perfectly, but tooling changes and manufacturing costs increase
Solution Approach 1:
By segmenting the collar as a separate component, the manufacturing precision for different rotor hub sizes is achieved through collar customization rather than complete nacelle cladding redesign. This reduces tooling changes and manufacturing complexity while maintaining precise interface fit.
Solution Approach 2:
The collar is designed with specific local adaptations for different rotor hub sizes, while the main nacelle cladding remains standardized. This local quality approach allows precise interface fit for each configuration without requiring global redesign of the entire cladding system, thereby reducing manufacturing costs and tooling changes.
3Adaptability or versatility
If the drive train axis height is changed, then the interface adapts to new dimensions, but the nacelle cladding shape must be altered
Solution Approach 1:
The collar is designed as a separate, adaptable component that can accommodate changes in drive train axis height. This segmentation allows the collar's shape and dimensions to be modified for different heights while the main nacelle cladding retains its original shape, resolving the contradiction between adaptability and shape consistency.
Solution Approach 2:
The collar is designed with dynamic adaptability to accommodate variations in drive train axis height through different collar configurations. This allows the interface to adapt to new dimensions without requiring changes to the static nacelle cladding shape, maintaining visual consistency while enabling dimensional flexibility.
Data Source
Figure 1~2
AI summary
The invention relates to a device for a variable interface in the area of the fairing between a nacelle and a rotor hub of a wind turbine. The object of the invention is to make the interface between a nacelle and a rotor hub of a wind turbine variable in the area of the fairing. The device according to the invention for a variable interface between a nacelle and a rotor hub of a wind turbine in the area of the fairing comprises parts of a nacelle fairing and a rotor hub fairing and is characterized in that a connection between the nacelle fairing and the rotor hub fairing is established by a separate, circumferential component. The circumferential component performs the function of the molded collar from the prior art.