Automatic spraying cooling device for power transformer and spraying cooling method

Abstract

The invention discloses an automatic spraying cooling device for a power transformer and a spraying cooling method. The automatic spraying cooling device comprises a mounting rack, a tap water pipe, a plurality of spraying pipes, a flow sensor, an electronic valve, a controller, a plurality of draught fans, a plurality of frequency converters, and a plurality of temperature sensors. The automatic spraying cooling device for the power transformer and the spraying cooling method regulate the air speed and the flow of the spraying pipes according to the temperature of the transformer, the cooling mode is further changed, and spraying and air blowing are mainly conducted. The water is only directly sprayed to the surface of the transformer when the temperature is relatively high, spraying water to a gap of the transformer and blowing air are mainly used to cool the transformer indirectly by cooling the air when the temperature is relatively low, spraying on the transformer for a long period of time is reduced, and the influence on the service life of the transformer is reduced.

Description

technical field [0001] The invention belongs to the technical field of substation auxiliary equipment, and in particular relates to an automatic spray cooling device and a spray cooling method for a power transformer. Background technique [0002] At present, with the continuous development of the power industry, more and more substations are being built. The distribution transformers usually used in substations are oil-immersed transformers. Affected by the high temperature weather in summer, the load is mostly cooling appliances such as air conditioners and electric fans. The load fluctuation is large, the load impact on the main transformer is greater, and the temperature rises faster, and then the main transformer is damaged due to the high temperature rise. Burning accident, the cooling method of the oil-immersed transformer is forced oil circulation and air cooling, and the cooling oil transfers heat to the atmosphere through cooperation with the external cooler. Thi...

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Problems solved by technology

This cooling method is difficult to ensure the safe and stable operation of the transformer in summer when the electricity load is large and the high temperature environment is continuous. At present, the only way to reduce the load and increase the auxiliary fan heat of the transformer is to reduce the power by switching off the switch, such as: spraying water on the transformer, placing it Effective methods of physical auxiliary cooling such as ice cubes can have a good cooling effect, but if the transformer is in contact with water for a long time, it is easy to affect the life of the transformer

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