Oil-immersed transformer and automatic cooling device thereof

Abstract

The invention provides an oil-immersed transformer and an automatic cooling device thereof. The oil-immersed transformer comprises an electric control module, an electric control spraying device, a cooling fan, a temperature controller WK and a fin radiator arranged on the oil-immersed transformer in a matched mode. The electric control spraying device comprises a water inlet pipe, a spraying pipe, an electric water pump and a water tank; the water tank is installed on the water inlet pipe, a low-liquid-level switch JS is installed in the water tank, the water inlet pipe is connected with a water inlet of the spraying pipe through the electric water pump, and a spray head is installed on a tail end pipeline of the spraying pipe; the cooling fan is mounted below the fin radiator; for an electrical control module, an electric water pump control circuit comprises a first contactor KM1, a normally-closed contact JS1 of a low-liquid-level switch JS and a high-temperature temperature controlcontact WK-1; the electric water pump driving loop comprises a water pump motor and a first normally open contact KM1-1 of a first contactor KM1; and the fan control circuit comprises a fan driving motor M2 and a second normally open contact KM1-2 of the first contactor KM1. The scheme is used for improving the heat dissipation efficiency of the radiator of the oil-immersed transformer.

Description

technical field [0001] The invention relates to the field of transformer cooling, in particular to an oil-immersed transformer and an automatic cooling device thereof. Background technique [0002] Transformer is an important power supply equipment in power system. Oil-immersed transformer is a kind of transformer commonly used in power system. Its main function is to convert high voltage into low voltage and transmit electric energy. [0003] Oil-immersed transformers, including transformers, generate a lot of heat during operation, so fin radiators are usually equipped on the transformer body. The heat generated during the operation of the oil-immersed transformer can be dissipated under the action of natural wind or fan, usually through the transformer oil, with the help of the fin radiator integrated on the transformer body. [0004] However, the heat energy of the radiator is taken away by the air flow (natural wind) and the oil temperature is lowered. Although the pu...

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Problems solved by technology

[0004] However, the heat energy of the radiator is taken away by air flow (natural wind) and the oil temperature is lowered. Although the purpose of heat dissipation of the transformer can be achieved, in the case of high temperature and heavy load in summer, even if a fan is installed, the heat dissipation of the transformer is still not enough. Optimistically, during operation, many transformers experience high temperature phenomena, which greatly increases the workload of electric workers in operation and maintenance

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