Arc-Extinguishing Chamber Magnetic Loop for Faster DC Arc Transfer
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Solution Overview
Problem
Existing circuit breakers face challenges in quickly transferring and eliminating electric arcs, particularly in DC circuit breakers, which can damage current-carrying equipment.
Innovation Solution
An arc-extinguishing mechanism with a magnetic loop system comprising first and second magnetizing mechanisms, arc-striking sheets, and arc-extinguishing grids to accelerate the movement of electric arcs into exhaust and gas inlets, enhancing extinguishing speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional arc-extinguishing structures are used, then the structure is simple, but the arc-extinguishing speed is slow and cannot quickly eliminate electric arcs
Solution Approach 1:
The patent replaces traditional mechanical arc-extinguishing methods with a magnetic field-based system. The magnetic loop system uses electromagnetic forces to rapidly drive arcs into extinguishing chambers, substituting mechanical movement with magnetic field control to achieve faster arc extinction without complex mechanical structures
Solution Approach 2:
The patent changes the physical parameters of the arc-extinguishing system by introducing magnetic field strength and distribution as key control parameters. By adjusting magnetizing sheet positions and configurations, the system optimizes magnetic flux density to accelerate arc movement and improve extinguishing speed
2Reliability
If arc-extinguishing capability is enhanced with magnetic mechanisms, then arc extinction speed increases, but the device complexity and assembly difficulty increase
Solution Approach 1:
The patent divides the magnetic loop system into modular components: separate magnetizing sheets, arc-striking sheets, and extinguishing chamber sections. This segmentation allows each component to be manufactured and tested independently, then assembled into the complete system, reducing overall assembly complexity
Solution Approach 2:
The magnetic loop system is designed to serve multiple functions: generating magnetic fields for arc driving, providing structural support, and guiding arc movement. This multi-functionality reduces the need for additional separate components, simplifying the overall device structure while maintaining reliable arc-extinguishing capability
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 magnetic loop system significantly increases the speed of electric arc extinguishing by guiding and pushing the arc into the arc-extinguishing chamber, reducing damage to equipment.
Implementation Method 1
the first magnetizing sheets, the arc-striking structure and the arc-striking sheets form a first magnetic loop; and the first magnetic loop is used for generating a pushing force in a direction of an exhaust port of the arc-extinguishing chamber to an electric arc entering the arc-extinguishing chamber
Implementation Method 2
the second magnetizing sheets and the arc-striking sheets form a second magnetic loop; and the second magnetic loop is used for generating a pushing force in a direction of a gas inlet of the arc-extinguishing chamber to an electric arc generated in disconnection
Data Source
AI summary
An arc-extinguishing mechanism that includes an arc-extinguishing chamber. The arc-extinguishing chamber includes two partition plates and a plurality of arc-extinguishing grids arranged between the two partition plates. An arc-striking sheet which cooperates with a moving contact or a static contact is arranged at the top of the arc-extinguishing grids. The arc-extinguishing mechanism further includes a first magnetizing mechanism that has two oppositely arranged first magnetizing sheets on two sides of the plurality of arc-extinguishing grids, and an arc-striking structure arranged at the bottom of the arc-extinguishing grids. The first magnetizing sheets are parallel to the partition plates. The first magnetizing sheets, the arc-striking structure and the arc-striking sheets form a first magnetic loop used for generating a pushing force in the direction of an exhaust port of the arc-extinguishing chamber to an electric arc entering the arc-extinguishing chamber.