Segmented Wind Turbine Blade Root for Transportable Large Blades
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Solution Overview
Problem
The increasing length and dimension of wind turbine blades pose challenges in manufacture and transportation, including height and width restrictions during transportation, which hinder the development and improvement of wind power generation devices.
Innovation Solution
A blade apparatus for wind power generation featuring a blade body with a blade-root connecting portion and a blade root assembly composed of multiple detachable blade root segments, arranged in a circumferential direction to form a body of revolution, allowing for easier assembly and transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the blade and blade root are formed integrally by infusion molding, then the structural strength is improved, but the manufacturing difficulty and transportation difficulty increase due to increased dimension
Solution Approach 1:
The blade root assembly is divided into multiple blade root segments that can be manufactured separately and then assembled together. Each segment has reduced dimensions making manufacturing and transportation easier, while the assembled segments form a complete blade root assembly that maintains the required structural strength through connection structures.
2Strength
If the blade and blade root are formed integrally by infusion molding, then the structural strength is improved, but the transportation difficulty increases due to height and width restrictions
Solution Approach 1:
The blade root assembly is segmented into multiple smaller components that can be transported separately within height and width restrictions. The segments are assembled on-site to form the complete blade root assembly, avoiding transportation restrictions while maintaining structural integrity through the connection of segments.
3Adaptability or versatility
If the blade root dimension is increased to match larger blade body, then the adaptability to larger blade body is improved, but the transportation restriction is worsened
Solution Approach 1:
The blade root assembly is divided into multiple segments that can be transported within size restrictions. When assembled, the segments form a complete blade root assembly with the required large dimension to match larger blade bodies, thus achieving both adaptability and compliance with transportation restrictions.
Solution Approach 2:
The blade root assembly uses a segmented radial arrangement where multiple segments are positioned circumferentially to form a body of revolution. This dimensional arrangement allows the assembled structure to achieve large radial dimensions while individual segments remain compact for transportation.
4Ease of manufacture
If the blade root assembly is decomposed into multiple segments, then the manufacturing and transportation difficulty is reduced, but the assembly complexity increases
Solution Approach 1:
The blade root assembly is segmented into multiple manageable components that simplify manufacturing and transportation. Connection structures are designed into the segments to facilitate systematic assembly, reducing the overall complexity despite the increased number of components.
Data Source
AI summary
Disclosed is a blade apparatus for wind power generation, which includes: a blade body, one end thereof being provided with a blade-root connecting portion; and a blade root assembly, including a plurality of blade root segments arranged in a circumferential direction of the blade body to form a body of revolution, each blade root segment being detachably connected to a corresponding portion of the blade-root connecting portion. The blade root assembly with a plurality of blade root segments is adopted, so that the dimension of a single blade root segment is greatly reduced, thus effectively reducing the difficulties in manufacture and transportation. Meanwhile, the overall dimension of the blade root assembly can be further increased to match with a larger blade body, which is beneficial to further improve the swept area of blade and generated output of wind power generation device.