Waterproof Signal Cable with Swellable Powder Barrier
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional waterproof signal cables, wrapped with aluminum foil and an insulation layer, fail to effectively prevent moisture ingress, leading to signal transmission failures and reduced service life due to the deterioration of the outer insulation layer over time.
Innovation Solution
A waterproof signal cable structure featuring a set of intertwined twisted pairs of wires with a water swellable powder distributed between the outer insulation tube and the strands, forming a gel-like barrier that prevents moisture penetration, while keeping the powder-free center portion for signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If aluminum foil and insulation layer are used for waterproofing, then the cable structure is formed, but moisture penetration occurs due to insulation layer deterioration over time
Solution Approach 1:
The patent changes the physical state of the waterproof material from solid (aluminum foil) to gel-like (swollen powder) when moisture is present. The powder absorbs moisture and transforms into a gel substance that effectively blocks moisture penetration, providing long-lasting waterproof protection without the deterioration issues of traditional insulation layers.
Solution Approach 2:
The patent replaces the mechanical barrier system (aluminum foil wrapping and insulation layer covering) with a chemical absorption system (hydrophilic powder that absorbs moisture and swells). This substitution provides more reliable and durable waterproofing as the chemical absorption mechanism does not deteriorate over time like polymer insulation materials.
2Reliability
If water swellable powder is distributed throughout the entire cable including center portion, then waterproofing is enhanced, but signal transmission is interfered with
Solution Approach 1:
The patent applies different properties to different parts of the cable: the center portion where signals are transmitted remains free of powder to ensure signal quality, while the outer ring portion contains the hydrophilic powder for waterproofing. This local differentiation allows both signal transmission and waterproofing functions to coexist without interfering with each other.
Solution Approach 2:
The patent segments the cable cross-section into two functional zones: a central signal transmission zone free of powder and an outer waterproofing zone containing the hydrophilic powder. This spatial segmentation resolves the conflict between waterproofing effectiveness and signal transmission quality by assigning different functions to different spatial regions.
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 prevents moisture from entering the signal cable, ensuring reliable signal transmission and extending the service life by creating a durable, moisture-resistant barrier around the cable.
Implementation Method 1
when the water swellable powder absorbs moisture, it will be gel-like to form a barrier outside the set of strands
Implementation Method 2
when the water swellable powder absorbs moisture, it will be gel-like to form a barrier
Implementation Method 3
The set of strands includes a plurality of twisted pairs which are intertwined; the twisted pairs are enclosed to form a center portion, and each of the twisted pairs includes two wires intertwined with each other
Data Source
AI summary
A signal cable structure includes a set of strands, an outer insulation tube and a water swellable powder. The set of strands includes a plurality of twisted pairs. The twisted pairs are enclosed to form a center portion, and each of the twisted pairs includes two wires intertwined with each other. The outer insulation tube sheaths the set of strands; an outer ring portion is surrounded outside the set of strands and formed between the outer insulation tube and the set of strands. The water swellable powder is distributed in the outer ring portion, and the center portion of the set of strands is not distributed with the water swellable powder. Thereby, a signal cable with waterproof performance is provided.