Compressed Stranded Conductor Area Reduction Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing compressed stranded conductors face issues of wire breakage and untwisting due to inadequate compression rates, where some wires are over-compressed or insufficiently compressed, leading to structural failures.
Innovation Solution
A compressed stranded conductor design with an inner layer strand and an outer layer strand, where the inner layer area reduction rate is between 29% and 32%, the outer layer area reduction rate is between 6% and 11%, and the difference between these rates is between 19% and 25%, optimizing the compression to prevent wire breakage and untwisting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a strand is compressed according to a compression rate without considering area reduction rate, then the diameter is reduced, but some wires are excessively compressed (over-compressed) leading to wire breakage or untwisted due to insufficient compression
Solution Approach 1:
The patent changes the compression parameters by introducing area reduction rate as a critical control parameter instead of relying solely on compression rate. By controlling the area reduction rate within specific ranges (inner layer: 25-35%, outer layer: 10-20%), the patent optimizes the compression process to achieve diameter reduction while preventing wire breakage and untwisting.
Solution Approach 2:
The patent applies different area reduction rate parameters to different layers of the stranded conductor. The inner layer strand is controlled to have an area reduction rate of 25-35%, while the outer layer strand is controlled to have an area reduction rate of 10-20%. This localized parameter control ensures that each layer receives appropriate compression without causing damage to individual wires.
2Stability of the object's composition
If compression is applied to reduce diameter, then the compactness is improved, but the structural integrity deteriorates due to over-compression or under-compression
Solution Approach 1:
The patent introduces area reduction rate as a precise control parameter to balance compactness and structural integrity. By controlling the area reduction rate within specific ranges for inner and outer layers, the patent achieves optimal compactness while maintaining the strength and integrity of individual wires within the stranded structure.
Solution Approach 2:
The patent applies partial compression action by differentiating the compression levels between inner and outer layers. The inner layer undergoes greater compression (25-35% area reduction) compared to the outer layer (10-20% area reduction), ensuring that each layer is compressed to the appropriate degree without excessive force that would damage the wires.
Data Source
AI summary
A compressed stranded conductor includes an inner layer strand having conductive wires which are twisted together, and an outer layer strand having conductive wires which are arranged around an outer periphery of the inner layer strand and are twisted together. The inner layer strand and the outer layer strand are compressed. An inner layer area reduction rate of one conductive wire of the inner layer strand is 29% or more and 32% or less. An outer layer area reduction rate of one conductive wire of the outer layer strand is 6% or more and 11% or less. A difference between the inner layer area reduction rate and the outer layer area reduction rate is 19% or more and 25% or less.