750kv large capacity autotransformer for shagot

The mechanical linkage system driven by a thermal bimetallic helical spring solves the problem of balancing heat dissipation and sand prevention in autotransformers in desert areas, enabling automatic adjustment in harsh environments and improving the reliability and continuity of equipment operation.

CN122417614APending Publication Date: 2026-07-17TEBIAN ELECTRIC APP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TEBIAN ELECTRIC APP CO LTD
Filing Date
2026-06-05
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, autotransformers in desert areas cannot simultaneously achieve both heat dissipation and sand prevention, leading to equipment overheating or sand accumulation, which affects the continuous operation of the power station.

Method used

The mechanical linkage system driven by a bimetallic helical spring automatically adapts to temperature and sandstorm conditions through the opening and closing of the blades and the adjustment of the wind deflector, achieving coordinated regulation of heat dissipation and sand prevention. It is driven by the waste heat of the transformer itself and does not require an external power source or sensors.

Benefits of technology

It achieves automatic adjustment of adaptive heat dissipation and sand prevention in harsh environments, reducing equipment overheating and sand accumulation, and improving the long-term operational reliability and continuity of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to the technical field of transformer, and discloses a 750kV large-capacity autotransformer for sandstorm, which comprises a transformer, sandproof mechanisms arranged on both sides of the transformer, wherein each sandproof mechanism comprises a vane plate, a first gear, a toothed plate, a first wedge-shaped plate and a linkage rod, the vane plate is arranged on one side of the transformer, the first gear is arranged outside the vane plate, the toothed plate is arranged at one end of the transformer, and the first wedge-shaped plate is arranged at one end of the transformer.The mechanical linkage of the thermal bimetallic spiral spring and the air guide plate can automatically adjust the opening degree of the vane according to the oil temperature and the intensity of sandstorm, which helps to relieve the conflict between heat dissipation and sand prevention, the V-shaped inclined fin cooperates with the sand separator, and the accumulated sand automatically slides off by means of gravity and the vibration of the equipment itself, so that the frequency of shutdown and cleaning due to blockage is reduced, the whole system adopts a pure mechanical structure and does not need electronic components, and can maintain a relatively stable working state in harsh environments such as sandstorm and large temperature difference.
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