Intelligent protection metering box for transformer

By using a bolt pre-tightening assembly and a vibration energy acquisition assembly to pre-tighten bolts using the electromagnetic vibration of the transformer, the problem of transformer vibration amplification caused by bolt loosening is solved, the operational stability and safety of the transformer are improved, and intelligent operation and maintenance and protection functions are realized.

CN122291228APending Publication Date: 2026-06-26XINCHI ELECTRIC GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XINCHI ELECTRIC GRP CO LTD
Filing Date
2026-04-21
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In existing intelligent protection metering boxes for transformers, bolts are fixed to the base of the metering box, which are easily loosened by the electromagnetic vibration of the transformer, resulting in a decrease in connection stiffness, amplification of vibration, and shortened service life, making it difficult to meet the safe and stable operation requirements of modern power systems.

Method used

The system employs a bolt pre-tightening assembly, a vibration energy acquisition assembly, and a pre-tightening transmission assembly. It utilizes the electromagnetic vibration of a transformer to drive the bolt pre-tightening assembly to perform unidirectional rotational pre-tightening. Combined with an automatic locking and buffer damping structure, it achieves continuous bolt pre-tightening and intelligent operation.

Benefits of technology

It effectively alleviates the problem of loose bolts, improves the stability and safety of transformer operation, reduces the risk of accidental opening of the enclosure door, realizes intelligent operation and maintenance, timely early warning and emergency handling, and improves protection capabilities and safety performance.

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Abstract

This invention relates to the field of transformer technology, and more particularly to an intelligent protective metering box for transformers, comprising: a metering box assembly, the metering box assembly including a box body and a door rotatably mounted on the box body; a transformer body installed inside the box body; mounting bases symmetrically fixedly mounted on the bottom of the transformer body; a mounting plate fixedly mounted inside the box body; the mounting bases and the mounting plate being connected by bolt fasteners; a bolt pre-tightening assembly mounted on the mounting plate; a vibration energy acquisition assembly mounted on the side of the transformer body; and a pre-tightening transmission assembly mounted on the mounting plate. This invention effectively alleviates problems such as loosening, falling off, and loosening of fixing bolts due to long-term vibration and impact, significantly improving the stability, firmness, and safety of transformer installation and fixing during long-term operation.
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