Stranded Conductor Filament Alignment via Lay Length Control
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Solution Overview
Problem
Existing stranded conductors with a radial multi-layer structure of aluminum filaments often suffer from strand unevenness and outward protrusion of filaments due to inappropriate lay length, leading to defects in the conductor.
Innovation Solution
A stranded conductor with a specific configuration of aluminum filaments, where the lay length is set between 6.2 and 15.7 times the conductor diameter, and a tension of 1.0 to 4.5 N is applied during stranding to prevent filament unevenness and protrusion, ensuring proper alignment and tension without slackening or elongation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the lay length is short, then the filaments are more tightly bound, but strand unevenness occurs in the filaments
Solution Approach 1:
The patent applies parameter changes by optimizing the lay length to a specific range (6.2 to 15.7 times the conductor diameter) and controlling the stranding tension (1.0 to 4.5 N) to simultaneously achieve tight filament binding and uniform strand structure, resolving the contradiction between tight binding and manufacturing precision
2Manufacturing precision
If the lay length is long, then the filaments are more uniformly arranged, but filaments in the inner portion protrude outward
Solution Approach 1:
The patent resolves this contradiction by precisely controlling the lay length parameter within the range of 6.2 to 15.7 times the conductor diameter and applying appropriate stranding tension (1.0 to 4.5 N), which maintains uniform filament arrangement while preventing inner filaments from protruding outward
3Manufacturing precision
If tension is applied during stranding, then filament alignment is improved, but filament elongation may occur
Solution Approach 1:
The patent applies parameter changes by precisely controlling the stranding tension within the range of 1.0 to 4.5 N, which is sufficient to achieve proper filament alignment and prevent defects while avoiding excessive tension that would cause filament elongation
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
The solution effectively inhibits strand unevenness and outward protrusion of filaments, resulting in a desired stranded conductor with improved structural integrity and insulation properties.
Implementation Method 1
The filaments are softened filaments that are softened
Data Source
AI summary
According to embodiments of the present invention, a stranded conductor is formed in which the occurrence of defects, such as strand unevenness of filaments and outward protrusion of filaments, is inhibited. According to embodiments of the present invention, a stranded conductor (1a) includes soft filaments (2a) stranded together. The soft filaments (2a) include a soft filament made of an aluminum material, disposed along a center (101), and include six soft filaments, twelve soft filaments, and eighteen soft filaments made of an aluminum material, disposed around and concentrically with the center. The filaments are softened filaments that are softened. A lay length (Pa) is from 6.2 times to 15.7 times a conductor diameter of the stranded conductor.