Annular Steel Tower Segment with Thickened Flange Region
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Solution Overview
Problem
Current wind turbine tower segment connections require large flanges for strength, leading to increased material costs, production complexity, and reduced interior space, while existing solutions fail to efficiently manage force flow and are prone to leverage effects, making them cumbersome and costly.
Innovation Solution
A steel tower ring segment design featuring a thickening region with a recess and a through opening that aligns with the force flow, allowing for reduced material usage, simplified assembly, and improved load-bearing capacity by aligning the main force flow with the connecting axis, thereby reducing the number of screws needed and enhancing longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If large flanges are used to ensure required strength and stiffness, then the load-bearing capacity and structural integrity are improved, but the material costs increase and the interior space of the tower is reduced
Solution Approach 1:
The patent applies local quality by creating a thickening region with increased wall thickness specifically at the connection area where strength is needed, while the rest of the tower segment maintains its original, thinner wall thickness. This localized reinforcement provides the necessary load-bearing capacity at the flange connection without requiring the entire tower structure to use excessive material, thereby reducing overall material costs while maintaining structural integrity.
2Strength
If large flanges are used to ensure required strength and stiffness, then the load-bearing capacity and structural integrity are improved, but the manufacturing complexity and assembly complexity increase
Solution Approach 1:
The thickening region is implemented as a localized geometric feature rather than a full flange structure, which simplifies the manufacturing process. Instead of producing and assembling large, complex flange components, the tower segment is manufactured with a locally reinforced wall thickness at the connection area, reducing the number of parts and assembly steps required while maintaining the necessary strength.
3Strength
If large flanges are used to ensure required strength and stiffness, then the load-bearing capacity and structural integrity are improved, but the interior space of the tower is reduced
Solution Approach 1:
The thickening region confines the increased material volume to a localized area at the connection point, minimizing the impact on the tower's interior space. The rest of the tower maintains its original cross-sectional dimensions, preserving the interior volume available for cables, maintenance platforms, and other components, while still providing the necessary strength at the critical connection location.
4Stability of the object's composition
If conventional flange connections are used, then the required ring stiffness and yoke stiffness are achieved, but the number of screws required increases and the assembly becomes more cumbersome
Solution Approach 1:
The thickening region provides enhanced stiffness and load distribution at the connection area, which allows for the use of fewer fastening elements while maintaining the required ring stiffness and yoke stiffness. This localized reinforcement improves the mechanical interlocking capability, making the connection more efficient and simplifying the assembly process by reducing the number of screws needed.
Data Source
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AI summary
The invention relates to an annular steel-tower segment for a wind turbine tower portion, a wind turbine tower portion, a wind turbine tower and a wind turbine, and a method for producing an annular steel-tower segment and a wind turbine tower portion. The invention relates in particular to an annular steel-tower segment for a wind turbine tower portion, comprising a first shell segment having: a segment height; a segment length in the segment circumferential direction; a first segment thickness; and a first horizontal abutment face. The first shell segment comprises a first thickened region in a region adjoining the first horizontal abutment face; the first thickened region has a first thickening thickness, and the first thickening thickness is greater than the first segment thickness; the first thickened region has a first cutout; the first cutout is spaced apart from the first horizontal abutment face; and a first through-opening leads from the first cutout to the first horizontal abutment face.