Coaxial Welding Cable Assembly Design for Weight Reduction
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Solution Overview
Problem
Conventional coaxial welding cables are heavy and stiff due to multiple conductors and insulating layers, necessitating a reduction in weight and increase in flexibility for improved welding performance.
Innovation Solution
A coaxial cable assembly design featuring a central electrical conductor surrounded by peripheral conductors, with a minimal amount of insulating material used to maintain a uniform resistance path, resulting in a lighter and more flexible cable configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional coaxial welding cables use multiple conductors and insulating layers, then electrical insulation and safety are improved, but weight and stiffness increase
Solution Approach 1:
The patent removes the inner insulating layer typically found in conventional coaxial cables, extracting only the essential insulating function by relying on the outer insulating layer and proper conductor spacing. This extraction of unnecessary insulating material directly reduces cable weight while maintaining adequate electrical insulation through the remaining structural design.
Solution Approach 2:
The patent changes the insulating structure from multiple layers to a single outer insulating layer configuration. This parameter change in the insulating system architecture reduces the total amount of insulating material while maintaining electrical safety through optimized conductor arrangement and sufficient dielectric strength of the outer layer.
2Reliability
If conventional coaxial welding cables use multiple conductors and insulating layers, then electrical insulation and safety are improved, but cable flexibility decreases
Solution Approach 1:
By removing the inner insulating layer and reducing overall insulating material content, the cable structure becomes more flexible. The extraction of redundant insulating layers decreases structural rigidity while maintaining necessary electrical insulation through the outer layer and conductor spacing design.
Solution Approach 2:
The insulating structure is changed from a multi-layer rigid configuration to a simplified single-layer design. This parameter change in structural complexity directly improves cable flexibility and ease of handling during welding operations while preserving electrical safety margins.
3Object-affected harmful factors
If conventional welding cables have high inductance per unit length, then electromagnetic shielding is improved, but current waveform distortion increases
Solution Approach 1:
The patent segments the cable into a central conductor and peripheral conductors arranged in a coaxial configuration. This segmentation creates a controlled electromagnetic field structure that contains magnetic flux within the cable cross-section, reducing external electromagnetic interference while minimizing inductance through the symmetric arrangement.
Solution Approach 2:
The patent optimizes the geometric parameters of the cable structure, specifically the ratio of peripheral conductor cross-sectional area to central conductor cross-sectional area (maintaining approximately 0.5 to 1.5 times ratio). This parameter optimization reduces inductance per unit length while maintaining electromagnetic shielding effectiveness through the coaxial geometry.
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 design reduces inductance per unit length, allowing for minimal distortion of dynamic current waveforms and enhancing the flexibility and weight reduction of welding cables.
Implementation Method 1
a central electrical conductor length having a first cross-sectional area... a plurality of peripheral electrical conductor lengths surrounding the insulated central electrical conductor length
Implementation Method 2
a first electrically insulating jacket surrounding the central electrical conductor length... a second electrically insulating jacket surrounding the plurality of peripheral electrical conductor lengths
Data Source
AI summary
A lighter weight, more flexible coaxial welding cable assembly, and a system and method for constructing same. An embodiment of the coaxial welding cable assembly comprises a central electrical conductor length having a first cross-sectional area and a first insulating jacket surrounding the central electrical conductor length. The coaxial welding cable assembly also includes a plurality of peripheral electrical conductor lengths surrounding the insulated central electrical conductor length, where a total cross-sectional area of the plurality of peripheral electrical conductor lengths is approximately the same as the first cross-sectional area of the central electrical conductor length. The central electrical conductor length is electrically insulated from the plurality of peripheral electrical conductor lengths only by the first electrically insulating jacket. A second electrically insulating jacket surrounds the plurality of peripheral electrical conductor lengths to contain the insulated central electrical conductor length and the plurality of peripheral electrical conductor lengths.