Indefectible Cable With Anti-Extrusion Buffer
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Solution Overview
Problem
Cables used for high-voltage electricity transmission are prone to damage from pressure and treading, reducing their service life due to lack of resistance.
Innovation Solution
An indefectible cable design featuring a cable jacket with metal ring sleeve, anti-extrusion devices at both ends, and buffer devices with interconnected buffer rods and spring pieces to prevent damage and facilitate heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If cable cores are arranged closely in the cable jacket, then the cable structure is compact, but heat dissipation is poor and the cable cores are prone to damage from pressure and treading
Solution Approach 1:
The patent implements a multi-layer nested protective structure where the cable jacket contains cable cores, which are surrounded by buffer devices, anti-extrusion devices, and metal rings. Each layer is nested within the previous layer, providing progressive protection while maintaining compactness. The buffer devices are positioned between cable cores, and the metal ring encircles the entire assembly, creating a compact yet highly protective nested configuration.
Solution Approach 2:
The patent incorporates buffer devices filled with buffer material between the cable cores and anti-extrusion devices at both ends of the cable jacket. These buffer elements are positioned in advance to absorb and distribute external pressure, preventing direct transmission of force to the cable cores. The buffer material creates a cushioning effect that protects the cores from treading and pressure damage before the force can reach them.
2Duration of action of stationary object
If anti-extrusion devices are added to protect cable ends, then service life is prolonged, but device complexity increases
Solution Approach 1:
The patent divides the protective structure into distinct functional segments: the cable jacket as the primary enclosure, buffer devices at each end for shock absorption, anti-extrusion devices for structural reinforcement, and metal rings for additional protection. Each segment performs a specific protective function, allowing the system to be constructed from modular components that can be independently manufactured and assembled, thereby managing complexity through functional segmentation.
Solution Approach 2:
The patent employs composite material construction in the anti-extrusion devices, combining metal housings with plastic linings. The metal housing provides structural strength and rigidity, while the plastic lining offers electrical insulation and additional cushioning. This composite approach achieves enhanced protection and extended service life by leveraging the complementary properties of different materials within a unified protective component.
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 protects cable ends from damage, prolongs service life, and aids in heat dissipation by maintaining clearance among cable cores, while the manufacturing process is simple and efficient.
Implementation Method 1
the buffer rod is provided with a buffer slot, and ends of a spring piece punch through the buffer slot
Implementation Method 2
pouring a metallic solution into a mold 2, cooling the mold 2 with the metallic solution for a period of time until a metal housing is formed
Data Source
AI summary
An indefectible cable comprises a cable jacket with cable cores arranged in an inner cavity thereof and a metal ring sleeved on an outer wall thereof. Both ends of the cable jacket are fixedly connected with an anti-extrusion device respectively, through which the cable cores are led out from through-holes. The anti-extrusion device has a metal housing with plastic lining. With the arrangement of a buffer device, the externally applied pressure on the cable is relieved to reduce the damage thereof.