High-Current Switch Insulating Body for Stability
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Solution Overview
Problem
High-current circuit breakers face challenges in stability and insulation due to transverse forces and potential flashovers caused by gaps between insulating elements, which can lead to reduced service life and malfunction.
Innovation Solution
The use of a single, integrally formed insulating body for both the pole head and pole carrier support devices eliminates gaps and enhances structural stability and insulation by distributing mechanical stress and preventing electric field-induced flashovers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two separate insulating elements are used for pole head and pole carrier support devices, then the structure allows for easier manufacturing and assembly, but gaps between the insulating elements can cause flashovers and reduce insulation properties
Solution Approach 1:
The patent combines two separate insulating elements into a single integrally formed insulating body that supports both the pole head and pole carrier. This merging eliminates gaps between insulating elements that could cause flashovers, thereby improving insulation properties and reliability while maintaining manageable structural complexity.
2Duration of action of stationary object
If two separate insulating elements are used for pole head and pole carrier support devices, then the manufacturing process is simpler, but tolerances cannot be compensated leading to mechanical prestressing and reduced service life
Solution Approach 1:
By integrating the support devices into one piece, the patent eliminates the need to compensate for tolerance accumulations between multiple components. This prevents mechanical prestressing during assembly, thereby extending the service life of the circuit breaker while the integral structure remains manufacturable using standard processes.
3Stability of the object's composition
If a one-piece insulating body is used for both support devices, then insulation properties and stability are improved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent creates a single integrally formed insulating body that provides enhanced structural stability and eliminates gaps between components. While this merging increases manufacturing complexity compared to separate elements, the integral structure achieves superior stability and insulation performance that outweighs the manufacturing challenge.
4Reliability
If a one-piece insulating body is used for both support devices, then gaps are eliminated preventing flashovers, but the structural complexity increases
Solution Approach 1:
The patent employs a single continuous insulating body structure that completely eliminates gaps where flashovers could occur. This merging of insulating elements creates a seamless insulation path, significantly improving reliability by preventing flashovers between current-carrying parts and the retaining wall.
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a power switch, especially a high-current switch, comprising at least one pole unit (2) with a pole head (3) and a pole base (4) and a contact system (5) interposed therebetween, and a drive unit (9, 10) for passing a switching movement into a mobile contact (8) of the contact system (5). Every pole head (3) and every pole base (4) of the pole unit (2) is fastened to a retaining wall (15) of the power switch by means of respective supporting elements (11, 12), said supporting elements (11, 12) comprising a single one-piece insulating body (16).