Cable Termination Adhesive Seal for Thermal Cycling
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Solution Overview
Problem
Existing cable connection assemblies suffer from fluid leakage and water ingress due to the failure of O-ring seals during heat cycling, which compromises the integrity of the insulation layer and reduces the lifespan of cables.
Innovation Solution
A cable termination connection assembly featuring a main body with a threaded portion and an adhesive seal that maintains a reliable seal between the cable and the main body, even during thermal changes, using a suitable adhesive that fills gaps and provides enhanced mechanical strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If O-ring seals are used in cable connection assemblies, then sealing function is provided, but fluid leakage occurs during heat cycling
Solution Approach 1:
The patent changes the sealing mechanism from elastic deformation-based (O-ring) to adhesive bonding-based. The adhesive seal maintains constant bonding strength across temperature variations, eliminating the thermal cycling compatibility issue while maintaining sealing reliability.
Solution Approach 2:
The patent replaces the mechanical O-ring seal system with a chemical adhesive bonding system. This substitution eliminates the need for elastic recovery and mechanical compression, providing stable sealing performance during thermal expansion and contraction cycles.
2Reliability
If dielectric enhancement fluid is injected into the cable, then water tree growth is eliminated, but fluid leakage occurs from the cable
Solution Approach 1:
The patent replaces mechanical sealing components (O-rings, compression fittings) with a chemically bonded adhesive seal system. This provides superior fluid retention by creating a permanent chemical bond that resists fluid pressure and prevents leakage of dielectric enhancement fluid.
Solution Approach 2:
The patent employs a composite sealing approach combining adhesive material with the cable connection assembly structure. This creates a multi-material seal system that provides both mechanical strength and chemical bonding to prevent fluid loss while maintaining insulation integrity.
3Reliability
If O-ring seals are used in cable connection assemblies, then sealing function is provided, but water ingress occurs due to seal failure
Solution Approach 1:
The patent replaces mechanical O-ring seals with adhesive bonding to prevent water ingress. The adhesive creates a continuous, gap-free seal that is immune to the thermal cycling failures that cause water penetration in traditional mechanical seal systems.
Solution Approach 2:
The adhesive acts as an intermediary sealing layer between the cable insulation and the connection assembly housing. This intermediate bonding layer provides a reliable barrier against water ingress that is not subject to the same failure modes as direct mechanical contact seals.
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 adhesive seal effectively prevents fluid leakage and water ingress, maintaining the integrity of the insulation layer and extending the lifespan of cables by ensuring a fluid-tight connection during dynamic thermal conditions.
Implementation Method 1
a first engagement mechanism configured to couple the main body to the cable, wherein the first engagement mechanism includes a first adhesive seal
Data Source
AI summary
A cable termination connection assembly for coupling a cable to an apparatus generally includes a main body defining an inner cavity having first and second ends, the main body configured to receive a pressurized fluid, and the first end configured to receive at least a portion of the cable therein, and a first engagement mechanism configured to couple the main body to the cable, wherein the first engagement mechanism includes a first adhesive seal.