A Self-curling Transformer with Partial Overheating

Abstract

The invention discloses a self-curling transformer with partial overheating, which belongs to the field of transformers. By attaching a fixed-point light-variable patch on the surface of the heat-dissipating scale, when the local temperature is too high, the heat-changing hemisphere near the place heats up, and a On the one hand, it produces an outward thrust on the edge of the self-rolling film. On the other hand, due to the abnormal high-temperature thermal change of the connecting rod, the water penetrates into the adhesive layer along the water-guiding ejector rod, making it loose. Under the above dual effects, the end of the curling end is separated from the fixed-point optical variable patch, thereby curling itself, thereby positioning the local high temperature, and then giving a fixed-point early warning to the staff. Compared with the existing technology, it can effectively avoid heat dissipation The scales are aging due to local high temperature, which causes the potential safety hazard of insulating oil overflow. In addition, when it is self-curling, the light capsule is wrapped, and when the light is dark, the light spots on the surface of the transformer are partially dim, making Or the early warning effect is more obvious when the light is dark.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a self-curling transformer with partial overheating. Background technique [0002] Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. The main components are primary coil, secondary coil and iron core (magnetic core). Transformer cooling refers to dissipating the heat generated by the running transformer through certain methods. When the transformer is running, the heat generated by the loss of the winding and core must be dissipated in time to avoid insulation damage caused by overheating. For small-capacity transformers, the ratio of the outer surface area to the volume of the transformer is relatively large, and a self-cooling method can be used to dissipate heat through radiation and natural convection. [0003] When the transformer is running, it will generate a lot of heat. In the prior art, heat dissipation scales are usually ar...

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Problems solved by technology

[0003] When the transformer is running, it will generate a lot of heat. In the prior art, heat dissipation scales are usually arranged on the surface of the transformer to increase the heat dissipation area and achieve the effect of heat dissipation. The difference in temperature may easily lead to uneven local temperature distribution or local excessive temperature. Under long-term action, the aging speed of the cooling scales at this place is higher than that of other parts, resulting in the potential safety hazard of internal insulating oil overflow.

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