Guide-tube-cooled oil-immersed transformer

Abstract

The invention relates to a transformer, in particular to a guide-tube-cooled oil-immersed transformer comprising a plurality of boxes. A winding and a core are fitted inside each box. A high-voltage terminal and a low-voltage terminal are fitted at the top of each box. The transformer is characterized in that each box is provided with a cooling device comprising a guide tube, one end of each guide tube is inserted into the corresponding core, the other end of each guide tube extends into each box, a plurality of cooling fins are disposed at the tail end of each guide tube, and the guide tubes and the cooling fins are filled with cooling liquid. The common cooling devices are replaced by the cooling devices; accordingly, raw materials are saved greatly, the size of the transformer is reduced, the cost of electric and civil engineering used with the transformer is reduced, and production and operation costs of the transformer are reduced greatly.

Description

(1) Technical field [0001] The invention relates to a transformer, in particular to a conduit cooling oil-immersed transformer. (2) Background technology [0002] At present, oil-immersed transformers have been widely used. The transformer will generate heat during operation, which will increase the temperature of the transformer. Under the same load conditions, the higher the temperature of the transformer, the greater its own energy consumption, and at the same time it will reduce Therefore, the transformer must be cooled. [0003] The cooling methods of oil-immersed transformers mainly include oil-immersed self-cooling, oil-immersed air-cooled forced oil circulation cooling, etc. Among them, the cooling method of forced oil circulation is only suitable for super-large transformers of 220KV and above. The application range is not wide, the cooling cost is high, and the device is complicated and prone to failure. Power consumption, and the fan cannot work continuously...

AI Technical Summary

Problems solved by technology

Among them, the cooling method of forced oil circulation is only suitable for super-large transformers of 220KV and above. The application range is not wide, the cooling cost is high, and the device is complicated and prone to failure. Power consumption, and the fan cannot work continuously for a long time, it is troublesome to replace and maintain the fan, which affects the work of the transformer; the cooling method of oil-immersed self-cooling is the simplest and the most widely used, but the cooling effect of this cooling method is poor, and it can only be increased by adding a radiator The quantity improves the heat dissipation capacity, the weight of the radiator accounts for 25-35% of the weight of the box, and the weight of the oil in the radiator accounts for 10-15% of the total oil weight, which wastes resources and costs high

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