一种断路器连接件结构及断路器
By setting a gas channel in the stroke control rod in the permanent magnet circuit breaker, compressed gas is guided to the insulating pull rod to cool the electric arc, which solves the problem of aerodynamic resistance during closing, improves the stability and insulation performance of the circuit breaker, and realizes the resource utilization of compressed gas.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHIJIAZHUANG KELIN ELECTRICAL EQUIP CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-17
AI Technical Summary
When a permanent magnet circuit breaker is closed, the high-speed movement of the moving iron core causes the air in the intermediate cavity to be compressed rapidly, generating aerodynamic resistance, which affects the closing speed and the stability of the circuit breaker. At the same time, the compressed gas forms a high-pressure airflow, which causes noise and wear, and reduces the reliability of insulation.
A stroke control rod is installed between the moving iron core and the stationary iron core, with an internal gas channel. When the circuit is closed, the compressed gas in the middle cavity is guided to the insulating pull rod, which is converted into a purging power to cool the electric arc, increasing the effective creepage distance and eliminating aerodynamic resistance.
By rapidly discharging compressed gas, pneumatic resistance is avoided, the closing speed and circuit breaker stability are improved, the dynamic insulation performance of the insulating rod is enhanced, and the safety and reliability of the circuit breaker are improved.
Smart Images
Figure CN120600599B_ABST