A stable operating vacuum interrupter

By introducing heat-conducting rods and heat dissipation fins into the vacuum interrupter, the problem of insufficient heat dissipation is solved, achieving more efficient heat transfer and structural stability, and improving the operational reliability and service life of the equipment.

CN224437506UActive Publication Date: 2026-06-30QIQI ELECTRIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QIQI ELECTRIC TECH CO LTD
Filing Date
2025-06-30
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Traditional vacuum interrupters have insufficient heat dissipation performance, which leads to increased temperature in the contact area, limiting the current carrying capacity of high-voltage vacuum switches, reducing electrical life, and affecting the reliability and service life of the equipment.

Method used

The design employs a heat-conducting rod and a spiral protrusion. The heat is conducted from the contact head to the heat dissipation fins through the heat-conducting rod, enhancing the heat conduction path. A heat-conducting layer is filled in the heat-conducting part to optimize the heat dissipation structure.

Benefits of technology

It improves the heat dissipation capacity of the arc-extinguishing chamber, reduces the temperature gradient, enhances the operational stability of the equipment under high load conditions and the heat resistance of the materials, extends the service life of the equipment, and improves the safety of the system.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a stable-operating vacuum interrupter, which includes a ceramic shell, a moving guide rod and a stationary guide rod coaxially disposed within the ceramic shell, and contact heads at the ends of the moving and stationary guide rods. A through hole is axially formed within the moving and stationary guide rods, and a spiral protrusion is provided on the inner wall of the through hole. A heat-conducting rod is disposed within the through hole, and a threaded groove engaging with the protrusion is provided on the outer wall of the heat-conducting rod. One end of the heat-conducting rod extends into the contact head, and the other end has a heat dissipation part, positioned at both ends outside the ceramic shell. The heat-conducting rod conducts heat from the contact head to the heat dissipation fins, improving the overall heat dissipation capacity of the interrupter and preventing localized overheating. The spiral protrusion increases the contact area, strengthens the heat conduction path, improves heat transfer efficiency, optimizes heat distribution, enhances operational reliability, strengthens the adaptability of the equipment under high loads and complex operating conditions, and extends its service life.
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