Arc Chamber Insulation Segmentation for Circuit Breakers
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Solution Overview
Problem
The production of arc chambers for circuit breakers with tubular insulating sections is laborious due to the difficulty in positioning and fixing recesses, limiting variations and requiring multiple insulating sections for different variants.
Innovation Solution
Dividing the insulating section into shell-shaped partial sections with gaps between them allows for easier production and flexibility in design, enabling the formation of an insulating section with a concave curvature and a rotationally symmetrical envelope, facilitating fluid flow and reducing the need for cutouts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tubular insulating section with penetrating recesses is used, then the arc chamber can be produced according to prior art, but the production process becomes laborious and handling becomes difficult
Solution Approach 1:
The insulating section is divided into multiple shell-shaped partial sections instead of being a single tubular piece. These partial sections are arranged with their convex outer surfaces facing the longitudinal axis and have gaps between them, eliminating the need for penetrating recesses while maintaining insulation functionality and simplifying production.
2Manufacturing precision
If penetrating recesses are made in the insulating section, then the structure is fixed, but variations in position and shape can only be carried out to a limited extent
Solution Approach 1:
By segmenting the insulating section into multiple adjustable partial sections, the design achieves both precise positioning (through controlled gaps) and high adaptability (by varying the number, size, and arrangement of partial sections) without being constrained by fixed recess structures.
Solution Approach 2:
The insulating section structure becomes dynamic and adaptable - the gaps between partial sections can be positioned and sized flexibly to create different configurations for various applications, unlike the fixed recess structure in prior art.
3Adaptability or versatility
If multiple variants of insulating sections with different recesses are required, then a large number of insulating sections must be kept available, but this increases inventory complexity
Solution Approach 1:
The shell-shaped partial sections serve as universal building blocks that can be combined in different numbers and arrangements to create various insulating section configurations. This modular approach allows a single type of partial section to fulfill multiple design variants, eliminating the need to maintain large inventories of different complete insulating sections.
Data Source
AI summary
An arc chamber for a circuit breaker has first and second mounting bodies. The mounting bodies are disposed at the ends of an electrically insulating insulation section of the arc chamber. The insulation section is formed of at least two shell-shaped partial sections. The partial sections are curved concavely relative to a longitudinal axis of the arc chamber. A gap is formed between the edges of the bodies of the partial sections.