Structure of chip radiator for outdoor copper winding oil-immersed transformer-ztelec group electricity in indian states


The heat of the transformer comes from two aspects: 1. Iron loss is the heat generated by the eddy current in the transformer core; 2. gas and electric nyc The heat generated by the load current flowing through the transformer winding. electricity production by source If too much heat can’t be dissipated in time, it will reduce the work efficiency and cause an explosion. In order to speed up heat dissipation, the outdoor copper winding oil-immersed transformers are equipped with heat sinks. The chip radiator is the most widely used radiator. f gas logo Compared with the tube radiator, it has the advantages of saving material, light weight, saving 2/3 of transformer oil, reducing cost by 6.47%, and high cooling efficiency. However, the welding process is demanding and the mechanical strength is poor.

The chip radiator has simple installation, no noise, low auxiliary machine loss, low failure rate, low maintenance workload, etc. compared with the strong oil air cooler and strong oil water cooler which are usually used as cooling devices for large and extra large transformers. 10 gases and their uses The advantages, but it has the disadvantages of low cooling efficiency, large floor space, large number of cooling groups, large oil consumption, etc., thus limiting its application on large and extra large transformers. In response to this problem, in the 1990s, the domestic absorption of European technical experience, the widespread use of chip radiators in strong oil-air cooling, that is, the chip radiator with fans and oil pumps for cooling. gas oil This cooler device, also known as a cooling cooler, has the following advantages:

(1) The corresponding cooling method can be determined according to the needs of the transformer load condition. gas z factor When the transformer load is low, the chip radiator can be self-cooling, that is, it operates in oil-immersed self-cooling mode (ONAN); when the transformer load rate reaches about 75%, the fan starts, and the chip radiator is in oil-immersed wind. Cold mode (ONAF) operation; when the transformer is fully loaded, the oil pump is put into operation, and the chip radiator operates in the strong oil air cooling mode (OFAF).

(2) The heat sink cooler fundamentally overcomes the drawback of low cooling efficiency of the chip radiator. When the transformer is fully loaded, the cooling cooler achieves a cooling efficiency comparable to that of a strong oil cooler. When the transformer load is low, since the cooling cooler uses an axial flow oil pump, even if the oil pump does not start, the oil flow between the chip radiator and the transformer body can be naturally circulated through the pipeline and the oil pump. Therefore, the fan and the oil pump are not activated, and the purpose of effective cooling can be fully achieved. In this way, not only the noise is reduced, but also the service life of the fan and the oil pump can be extended, and the loss rate of the auxiliary machine can be reduced.

ZTELEC has been working on the transformer factory for ten years. It has been committed to the integrated R&D, production, sales and service of transmission and distribution systems. It aims to provide users with safer, more reliable, smarter and greener electrical solutions, so that electricity can change the world. In the process of intellectual change, let the electricity do its best. grade 9 electricity formulas Choose high quality outdoor copper winding oil-immersed transformer