Arc suppression coil and small resistor parallel grounding protection device

The top cover is automatically opened by a mechanical pressure relief structure, which solves the pressure relief problem of the arc suppression coil and the small resistor connected in parallel grounding protection device under high pressure arcing gas, ensuring safety and stability.

CN224289038UActive Publication Date: 2026-05-26TANGSHAN DONGTANG ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TANGSHAN DONGTANG ELECTRIC CO LTD
Filing Date
2025-07-15
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The existing protection device that connects the arc suppression coil and the small resistor in parallel to ground cannot operate when the fan connection line is short-circuited, which prevents the high-pressure arcing gas from being released and may cause safety accidents such as explosions.

Method used

It adopts a mechanical pressure relief structure, including positioning clips and a top cover connection mechanism. When the high-pressure arc gas inside the chamber reaches the threshold, the top cover will automatically open to relieve pressure, ensuring that the gas pressure is within a safe range.

Benefits of technology

It achieves automatic pressure relief under high-pressure arcing gas conditions, preventing excessive gas pressure inside the chamber, avoiding safety accidents such as explosions, and ensuring stable operation of the device.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224289038U_ABST
    Figure CN224289038U_ABST
Patent Text Reader

Abstract

The utility model relates to the field of power system safety protection, and discloses an arc suppression coil and small resistor parallel connection grounding protection device which comprises a grounding box body. The two rectangular openings are formed in the top surface of the grounding box body in a penetrating manner; the two top covers are respectively mounted in the two rectangular openings; the transverse plate is mounted at the inner top of the grounding box body; the two groups of positioning clamping pieces are mounted between the transverse plate and the top cover; when the top cover drives the upper mounting plate to press downwards, the left arc-shaped clamping plate and the right arc-shaped clamping plate are opened outwards with the shaft rod as the axis and are connected with the clamping base in a matched mode to form a stable clamping structure, and the stability of the top cover during normal operation of the device is ensured; when the arc suppression coil and the small resistor in the box body are connected in parallel to generate high-voltage arcing gas, and the gas rushes to the top of the box body, the top cover is burst open by the high-voltage arcing gas, and pressure is automatically released, so that the gas pressure in the box body is ensured to be within a safe range, and safety accidents such as explosion are prevented.
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