Saggoga-used 750kV high-capacity autotransformer

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

Application Number
CN202610809337.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
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.

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Abstract

The invention relates to the technical field of transformers, and discloses a Saggoga waste 750kV high-capacity autotransformer which comprises a transformer body, sand prevention mechanisms are arranged on the two sides of the transformer body, each sand prevention mechanism comprises a blade plate, a first gear, a toothed plate, a first wedge-shaped plate and a linkage rod, the blade plate is arranged on one side of the transformer body, and the first gear is arranged on the other side of the transformer body. The first gear is arranged on the outer side of the blade 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. Through mechanical linkage of the thermal bimetal spiral spring and the air inducing plate, the opening degree of the blades can be self-adaptively adjusted according to the oil temperature and the wind and sand strength, the conflict between heat dissipation and sand prevention can be relieved, the V-shaped inclined fins are matched with the sand separating plate, accumulated sand automatically slides down by means of gravity and vibration of equipment, the frequency of shutdown for disassembly and washing due to blockage is reduced, and the working efficiency is improved. The whole system adopts a pure mechanical structure, does not need electronic elements, and can keep a relatively stable working state in severe environments such as sand and dust, large temperature difference and the like.
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