Arc Extinguishing Assembly Sealing for Pressure Buildup
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Solution Overview
Problem
Conventional circuit breakers face issues with insufficient pressure increase and fluid leakage during arc extinguishing, leading to reduced arc extinguishing performance and potential damage.
Innovation Solution
An arc extinguishing assembly with a sealing member that covers the gap between the circuit breaker and the arc extinguishing assembly, utilizing an elastic sealing member to increase pressure and prevent fluid leakage, enhancing arc extinguishing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a conventional arc extinguishing assembly is used without a sealing member, then the structure is simpler, but fluid leakage occurs through the gap between the arc extinguishing assembly and the circuit breaker, resulting in insufficient pressure increase
Solution Approach 1:
A sealing member is introduced as an intermediary component between the arc extinguishing assembly and the circuit breaker body. This sealing member fills the gap and prevents fluid leakage, thereby maintaining the pressure increase necessary for effective arc extinguishing without compromising the simple structural design.
2Reliability
If the gap between the arc extinguishing assembly and circuit breaker is not sealed, then the device complexity is reduced, but arc extinguishing performance deteriorates due to fluid leakage
Solution Approach 1:
The sealing member serves as a mediator that ensures reliable arc extinguishing performance by preventing fluid leakage through the gap. While it adds a component to the system, the sealing member is designed to be simple in structure, minimizing the increase in overall device complexity while significantly improving reliability.
3Stress or pressure
If a sealing member is added to prevent fluid leakage, then pressure increase is improved, but the device complexity increases
Solution Approach 1:
The sealing member is designed as a simple intermediary component that can be easily integrated into the existing arc extinguishing assembly. Its straightforward structure and function of preventing fluid leakage ensure temporary pressure buildup without significantly complicating the overall assembly process or design.
Solution Approach 2:
The sealing member utilizes a flexible sealing structure that can adapt to the gap between the arc extinguishing assembly and the circuit breaker body. This flexible design allows effective sealing with minimal structural complexity, maintaining pressure while avoiding the need for complex rigid sealing mechanisms.
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 solution effectively increases temporary pressure inside the circuit breaker, extends arc length, and improves arc extinguishing performance, reducing damage from arcs.
Implementation Method 1
both side surfaces of the exhaust are coupled plate-shaped side portions spaced apart from each other by a predetermined distance to face each other, a sealing member to seal a gap between the arc extinguishing assembly and the circuit breaker
Implementation Method 2
The generated arc is cooled after undergoing an extinguishing process in the arc extinguishing assembly, and discharged to the outside of the arc extinguishing assembly
Data Source
AI summary
The present disclosure relates to an arc extinguishing assembly including a sealing member and a circuit breaker including same. The sealing member is pressed and elastically deformed between coupling surfaces of the arc extinguishing assembly and the circuit breaker, and accordingly, a gap between the coupling surfaces of the arc extinguishing assembly and the circuit breaker is sealed. Accordingly, when an arc is generated, a temporary pressure increase in the circuit breaker increases and the arc can be smoothly extended.