Solid-Insulated Circuit-Breaker Pole with Integral Elastic Layer
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Solution Overview
Problem
Existing methods for producing circuit-breaker poles with insulation are complex and costly, as they require a separate step for integrating an elastic padding layer to compensate for thermal expansion differences between the pole shell housing and the vacuum interrupter, and ensure dielectric insulation.
Innovation Solution
A method involving the formation of a pole shell housing with an integrally bonded elastic layer, allowing the vacuum interrupter to be assembled directly into a pre-produced shell housing with an embedded elastic layer, using materials like thermoplastic elastomers or silicone rubber, which provides both thermal compensation and dielectric insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fluid compensating compound is used to form an elastic padding layer, then thermal expansion compensation is achieved, but the production process becomes complex and costly due to additional curing steps
Solution Approach 1:
The patent combines the elastic padding layer and pole shell housing into a single integrated component produced via injection molding. The two-part injection molding process creates both the housing and elastic layer in one operation, eliminating the need for separate curing steps required by fluid compensating compounds, thus simplifying production while maintaining thermal expansion compensation functionality
Solution Approach 2:
The patent replaces the chemical curing process of fluid compensating compounds with a mechanical injection molding process. This substitution eliminates the need for curing time and complex chemical handling, reducing production complexity while achieving the same elastic padding function through thermoplastic or thermoplastic elastomeric materials
2Reliability
If a fluid compensating compound is poured and cured to form an elastic layer, then dielectric insulation is provided, but production time increases due to curing requirements
Solution Approach 1:
The elastic layer is pre-formed as an integral part of the pole shell housing through injection molding before the vacuum interrupter is assembled. This preliminary integration eliminates the need for post-assembly curing operations, reducing production time while ensuring dielectric insulation is already in place before the interrupter is mounted
Solution Approach 2:
The patent replaces the time-consuming chemical curing process with a rapid mechanical injection molding process. Thermoplastic and thermoplastic elastomeric materials can be molded and cooled quickly without requiring extended curing times, significantly reducing the overall production cycle time while maintaining adequate dielectric insulation properties
3Reliability
If an elastic padding layer is formed separately and then integrated, then thermal expansion compensation is achieved, but manufacturing cost increases
Solution Approach 1:
The patent merges the elastic padding layer with the pole shell housing into a single integrated component produced via two-part injection molding. This consolidation eliminates the need for separate manufacturing and assembly operations, reducing labor costs and material waste while maintaining the thermal expansion compensation function through the integrated elastic layer
Solution Approach 2:
The integrated elastic layer serves multiple functions simultaneously: it provides thermal expansion compensation, dielectric insulation, and mechanical cushioning. By combining these functions into a single component produced through injection molding, the patent eliminates the need for multiple separate components and assembly steps, thereby reducing overall manufacturing cost while maintaining all required functionalities
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
This approach simplifies and cost-reduces the production of solid-insulated circuit-breaker poles by integrating the elastic layer directly into the pole shell housing, ensuring effective thermal expansion compensation and dielectric insulation without additional assembly steps.
Implementation Method 1
an elastic padding layer is formed between the pole shell housing and the vacuum interrupter
Implementation Method 2
Filling an intermediate space between the pole shell housing and the mounted vacuum interrupter with a fluid compensating compound that cures after being poured and as a consequence becomes a gel-type or rubber-type material
Data Source
AI summary
A method for producing a solid-insulated circuit-breaker pole includes forming a pole shell housing with an elastic layer that is integrally joined to the pole shell housing; and mounting a vacuum fault interrupter into the pole shell housing provided with the elastic layer. Also disclosed is a solid-insulated circuit-breaker pole.