Electrode column insulation device of large-scale totally-enclosed ferronickel electric furnace

By adopting a multi-layer insulation structure and reasonable material selection at the key connection points of the electrode columns in large nickel-iron electric furnaces, the problem of unstable insulation performance in large nickel-iron electric furnaces has been solved, achieving higher insulation reliability and equipment stability, and improving production efficiency and safety.

CN224385732UActive Publication Date: 2026-06-19DALIAN HEAVY MECHANICAL & ELECTRICAL EQUIP ENG CO +1
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Patent Information

Application Number
CN202521265323.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-19
Publication Date
2026-06-19
Estimated Expiration
2035-06-19

AI Technical Summary

Technical Problem

Existing insulation materials cannot meet the complex operating conditions of high voltage and high current in large nickel-iron electric furnaces, resulting in unstable insulation performance and affecting production efficiency and safety.

Method used

The system employs a multi-layered insulation structure and appropriate material selection, including flange plate insulation, hanging combination insulation, shaped high-alumina brick and refractory ceramic fiber felt combined insulation, and shaped alumina ceramic insulating rings, etc., to provide insulation isolation and reinforcement at key connection points, thereby improving insulation performance and service life.

Benefits of technology

It effectively prevents arcing caused by the close proximity of internal components of the electrode, reduces maintenance rate, improves insulation reliability and equipment stability, extends the service life of the electric furnace, and enhances production efficiency.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model provides a large-scale totally-enclosed nickel-iron electric furnace electrode column insulation device which comprises a first insulation structure, a second insulation structure, a third insulation structure, a fourth insulation structure, a fifth insulation structure, a sixth insulation structure and a seventh insulation structure. The second insulation structure is arranged at the joint of the copper tile hanger and the hanging sleeve, the third insulation structure is arranged at the joint of the pressure ring hanger and the hanging sleeve, the fourth insulation structure is arranged at the joint of the pressure ring and the bottom ring, and the fifth insulation structure is arranged at the joint of the protective sleeve and the hanging sleeve. The sixth insulation structure is arranged at the joint of the protective sleeve and the bottom ring, and the seventh insulation structure is arranged at the joint of the hanging sleeve, the pipeline and the hanging rod. According to the utility model, the insulation performance among all core parts can be improved, and the problems that the overall stability of the system structure is poor, the service life is short and the like influence safety and production are solved.
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