Electric Cable Joint With Nested Fluid Sealant

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Solution Overview

Problem

Existing electrical cable joints with fluid sealants face issues with confinement, deformation under high temperatures or pressures, and sliding of connector components, making them difficult to install and ensuring electrical insulation.

Innovation Solution

A cable joint design featuring a removable tube, film, and retractable sleeve with a fluid substance under the sleeve and coaxial rings, which confines the substance and provides insulation, resistance to high temperatures and pressures, and reduces friction during installation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a fluid sealing agent is placed on the outer surface of the connector, then the connector can be assembled, but the sealing agent cannot be reliably confined and may deform under high temperature or pressure

Engineering Contradiction:

Improveconfinement of fluid substanceVSAvoiddeformation under temperature and pressure

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The fluid substance is nested within a defined space formed by the connector body and the sealant flow blocking wall, creating a confined chamber that prevents migration and deformation while maintaining the sealing function

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The sealant flow blocking wall is pre-formed as an integral part of the connector body, establishing the confinement structure before the fluid substance is applied, ensuring proper containment from the outset

Inventive Principle:

Principle #10Preliminary action

2Reliability

If a fluid substance with electrical properties is used in the connector, then electrical insulation is provided, but the constituents of the connector slide relative to each other due to fluidity

Engineering Contradiction:

Improveelectrical insulationVSAvoidrelative sliding of constituents

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The fluid substance is nested within the confined space defined by the connector body and sealant flow blocking wall, preventing it from migrating and causing relative sliding between connector constituents while maintaining its electrical insulation function

Inventive Principle:

Principle #7Nested doll (Nesting)

3Ease of manufacture

If a fluid sealing agent is used to connect cables, then the connection is made, but the installation is difficult due to fluidity and sliding of components

Engineering Contradiction:

Improvecable connectionVSAvoidinstallation difficulty

Core Design Contradiction:

Ease of manufactureVSEase of operation

Solution Approach 1:

The sealant flow blocking wall is pre-formed as part of the connector body, and the fluid substance is contained within the defined space before installation, eliminating the need for complex installation procedures to prevent leakage or sliding

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The fluid substance is nested within the confined chamber formed by the connector body and sealant flow blocking wall, allowing for simple insertion and connection without requiring complex installation procedures to maintain containment

Inventive Principle:

Principle #7Nested doll (Nesting)

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

Ensures reliable electrical insulation, prevents sleeve slippage, and simplifies installation by confining the fluid substance and reducing friction, allowing for pre-assembly and handling of components without the need for handling electrical substances on-site.

Implementation Method 1

a shrink sleeve (16) arranged around the tube (12) and the removable film (14); the substance being placed between the at least two rings (20)

Methodology Applied

Scientific EffectPhysical containment: Physical Containment

Implementation Method 2

a removable tube (12); a removable film (14) placed on the removable tube (12)

Methodology Applied

Scientific EffectMechanical support:

Implementation Method 3

provide electrical insulation guaranteeing the safety of users

Methodology Applied

Scientific EffectElectrical insulation: Dielectric

Implementation Method 4

at least two rings coaxial with the shrink sleeve arranged at a predetermined non-zero distance from each other under the sleeve retractable, the substance being placed between the at least two rings (20)

Methodology Applied

Scientific EffectPhysical constraint: Physical Containment

Data Source

PatentEP3961835A1Electric cable joint and associated installation method

Publication Date: 2022.03.02 NEXANS SA

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AI summary

This power cable junction (10) comprises a removable tube (12), a removable film (14) disposed on the removable tube (12), and a shrink sleeve (16) disposed around the removable tube (12) and film (14). It further comprises a fluid substance (18) having electrical properties disposed under the shrink sleeve (16) and at least two rings (20) coaxial to the shrink sleeve (16) arranged at a predetermined non-zero distance from each other under the shrink sleeve (16). The substance (18) is disposed between the at least two rings (20).