Cooling device of transformer

Abstract

The invention discloses a cooling device of a transformer. The cooling device comprises a radiator body, and the radiator body comprises an oil inlet pipe, an oil return pipe, a plurality of cooling fins and a body fixing rib. The oil return pipe is located below the oil inlet pipe, the cooling fins are sequentially arranged between the oil inlet pipe and the oil return pipe and are of a hollow structure, and the cooling fins are connected and communicated with the oil inlet pipe and the oil return pipe. The radiator body further comprises a water pipe set for providing cooling water for the surfaces of the cooling fins, a water supply controller and a temperature inductor on the body fixing rib, and the temperature inductor is connected with the water supply controller. The water supply controller controls water paths of the water pipe set to be connected and disconnected. The temperature inductor transmits signals to the water supply controller. When the temperature, measured by the temperature inductor, around the cooling fins is high, for example, the temperature is about 60 DEG C, the water supply controller opens a water supply channel to carry out water spraying cooling on the cooling fins. Automatic water spraying cooling can be achieved, cooling speed is high, and efficiency is high.

Description

technical field [0001] The invention relates to a cooling device for a transformer, which belongs to the technical field of electric equipment. Background technique [0002] During the operation of the transformer, due to the existence of iron loss and copper loss, these losses will be converted into heat energy and radiated outward, which will cause the transformer to continue to heat up and the temperature will rise. If the heat dissipation of the transformer is not good, the temperature of the transformer will rise. If the temperature rise exceeds the allowable level of the transformer, the service life of the transformer will be reduced, and the transformer will be damaged if it is serious. Therefore, in order to ensure good heat dissipation of large transformers, certain cooling methods must be used to take away the heat generated in the transformer. [0003] The structure of the current oil-immersed transformer radiator includes an oil inlet pipe, an oil return pipe, ...

AI Technical Summary

Problems solved by technology

The oil-immersed self-cooling type uses the natural convection of the oil to bring the heat to the tank wall and the heat dissipation pipe, and then relies on the convection conduction of the air to dissipate the heat. This cooling method usually does not have special cooling equipment; however, this cooling method cools The speed is slow and the cooling efficiency is not high, especially during the high temperature and high load period in summer, the temperature of large transformers will still reach more than 80 degrees

The oil-immersed air-cooled type is based on the oil-immersed self-cooling type, and a fan is installed on the wall of the oil tank or the heat dissipation pipe, and a blower is used to help cooling; this cooling method has a relatively good cooling effect, but there are large fan motor losses, The disadvantage of high cost, and only blowing the air away, cannot accelerate the heat dissipation of the radiator

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