Dry type transformer

Abstract

The invention discloses a dry type transformer, and relates to electrical equipment. The dry type transformer comprises a transformer, wherein a shell is arranged outside the transformer; the transformer is arranged in the shell in a sealed mode; the shell is provided with a vacuum interlayer, and a cable channel is formed in the vacuum interlayer; a gas circulating device is further arranged on the shell; the gas circulating device comprises an air pump and a gas storage tank; compressed nitrogen is stored in the gas storage tank; the shell is further provided with an air inlet and an air outlet which are matched with the gas circulating device; and a heat exchange device is further arranged on the gas circulation device. Compared with the prior art, the dry type transformer is sealed ina shell full of nitrogen, so that external dust and impurities are isolated, and the constant-temperature and constant-humidity in the shell can be kept; and due to the fact that no oxygen exists, oxidation reaction is completely eradicated, so that the service life of the dry type transformer is greatly prolonged, and the occurrence rate of faults is reduced. Moreover, after the dry type transformer is exploded, the occurrence of fire disasters can be reduced under the inhibition of nitrogen.

Description

technical field [0001] The invention relates to an electric device, especially a transformer. 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. The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization, etc. In the hot summer in the south, the ambient temperature is high, and the transformer under high load will heat itself seriously, and will run above the warning temperature for a long time, which will not only reduce the service life of the transformer, but also cause unimaginable consequences in case of danger. At this time, it is impossible for the transformer to reduce the power, and it is impossible to shut down the power to dissipate heat. We have to use other heat dissipation methods while the transformer is working. Contents of the invention [0003] Aiming ...

AI Technical Summary

Problems solved by technology

In the hot summer in the south, the ambient temperature is high, and the transformer under high load will heat up seriously, and will run above the warning temperature for a long time, which will not only reduce the service life of the transformer, but also cause unimaginable consequences in case of danger

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