Inspectable Resin Pot Assembly for Distortion-Free Cable Gland Sealing
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Solution Overview
Problem
The existing barrier cable gland installation process is cumbersome due to the distortion of flexible silicone pots, requiring additional steps for conductor alignment and resin hardening, which increases time and complexity.
Innovation Solution
A barrier cable gland design featuring a resin pot component with a clear, deformable portion for inspection and a rigid portion to maintain shape, allowing the resin to gel without distorting, along with a two-component resin mix of bright color for easier inspection, facilitating simpler installation and inspection processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flexible silicone pot is used for the resin pot assembly, then the pot can be easily manufactured and inspected, but the pot distorts during resin injection and installation, increasing complexity and time
Solution Approach 1:
The resin pot assembly is segmented into two separate components: a flexible silicone pot (first hollow component) and a rigid support structure (second hollow component). The silicone pot provides ease of manufacture and inspection visibility, while the rigid support structure prevents distortion. This segmentation allows each component to fulfill its specific function without the drawbacks of using a single material for both purposes.
Solution Approach 2:
The resin pot assembly uses a composite structure combining flexible silicone material and rigid material (such as plastic or metal). This composite approach allows the assembly to benefit from the flexibility and transparency of silicone while gaining the shape-stabilizing properties of the rigid material, thereby preventing distortion during installation and resin injection.
2Difficulty of detecting and measuring
If a flexible silicone pot is used, then inspection visibility is improved, but additional steps are required for conductor alignment and resin hardening
Solution Approach 1:
The rigid support structure is pre-installed in the cable gland body before resin injection. This preliminary action establishes the correct positioning and shape maintenance framework, eliminating the need for subsequent alignment adjustments and reducing the time required for conductor alignment and resin hardening steps.
3Ease of manufacture
If a clear silicone pot is used, then material and manufacturing costs are reduced, but the pot distorts making location difficult
Solution Approach 1:
The resin pot assembly is divided into a flexible silicone pot (first hollow component) and a rigid support structure (second hollow component). The silicone pot maintains manufacturing cost-effectiveness and transparency, while the rigid support structure ensures shape precision and prevents distortion during installation.
Solution Approach 2:
The assembly combines clear silicone material with rigid material to create a composite structure that maintains both the cost advantages and transparency of silicone while gaining the shape-stabilizing properties of rigid materials, thereby preventing distortion.
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 design simplifies the installation process by allowing the resin to gel without shape distortion and enhances inspection visibility with a bright-colored resin mix, reducing installation time and complexity while maintaining the gland's integrity.
Implementation Method 1
a two component resin mix having a bright colour is introduced into the resin pot assembly
Implementation Method 2
a curable liquid two component resin mix is introduced into a cavity defined by an inwardly directed surface of the inner tubular body
Data Source
AI summary
A resin pot assembly for use with a barrier cable gland is provided. The resin pot assembly is shaped and dimensioned to locate within an internal cavity of a cooperating barrier cable gland and has a closable end configured to seal onto a cable sheath of a cable in an installed condition. The resin pot assembly has two, coaxial components configured in the installed condition to surround a plurality of individually electrically insulated conductors extending out of the cable sheath. A first hollow component in the form of a clear cylinder provides the closable end of the resin pot assembly and a second hollow component, which is rigid, provides an pen end of the resin pot assembly and is axially spaced apart from the closable end of the resin pot assembly. The resin pot assembly operatively receives a resin mix therein.