Conductive Corrosion Covering for Buried Grounded Metal Components
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Solution Overview
Problem
Metallic components such as utility poles and guy anchor rods are prone to corrosion, especially when buried in the earth, and existing protective methods do not effectively provide both corrosion protection and electrical conductivity.
Innovation Solution
A water-impermeable, electrically-conductive heat-shrink polymeric matrix covering with dispersed particulate carbonaceous materials like calcined petroleum coke, carbon black, or carbon nanotubes is applied to the metallic components, allowing for electrical grounding and protection against corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a water-impermeable polymeric matrix covering is applied to protect metallic components from corrosion, then corrosion protection is improved, but electrical conductivity deteriorates
Solution Approach 1:
The patent applies composite materials by combining a polymeric matrix with dispersed carbonaceous particles (such as carbon black, graphite, or carbon fibers) to create a covering that simultaneously provides both corrosion protection and electrical conductivity. The carbonaceous particles form a conductive network within the water-impermeable polymeric matrix, allowing the composite material to fulfill both protective and conductive functions.
2Reliability
If existing protective coverings are used on buried metallic components, then corrosion protection is provided, but effective electrical grounding is lost
Solution Approach 1:
The composite material consisting of a polymeric matrix with dispersed carbonaceous particles provides both corrosion protection and electrical grounding capabilities. The carbonaceous particles maintain electrical continuity through the covering layer, enabling effective grounding of buried metallic components while the water-impermeable matrix protects against corrosive environmental factors.
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 provides long-lasting corrosion protection and electrical conductivity, enabling the metallic components to be safely buried in the earth while maintaining electrical contact with the ground, with resistivity suitable for effective grounding and resistance to environmental factors.
Implementation Method 1
a water-impermeable heat-shrink polymeric matrix
Implementation Method 2
a particulate carbonaceous material dispersed in the polymeric matrix
Data Source
AI summary
An electrical assembly includes a metallic component having a bottom portion that is buried in the earth, a top portion that is above the earth, and an outer surface. A water-impermeable electrically-conductive covering is applied to the outer surface at the bottom portion and is in electrical contact with the earth. The covering includes a water-impermeable polymeric matrix that protects the metallic component from corrosion, and a particulate carbonaceous material that is dispersed in the polymeric matrix and that allows for the metallic component to be electrically grounded.