An oil retaining device and a transformer using the same

Abstract

The invention provides an oil guard device and a transformer applying the device. The oil guard device comprises an inner oil guard device and an outer oil guard device, wherein the inner oil guard device and the outer oil guard device have the same structures, and both comprise long cushion blocks, short cushion blocks and clapboards; notches are arranged in two ends of the long cushion blocks and one ends of the short cushion blocks; the short cushion blocks are arranged on one ends of the upper end faces of the long cushion blocks; the clapboards are arranged on the other ends of the upper end faces of the long cushion blocks; one ends, close to the end parts of the long cushion blocks, of the clapboards are bent. According to the transformer applying the oil guard, a plurality of notches are arranged in a circumferential direction of the outer side of an inner paper tube of a coil and a circumferential direction of the inner side of an outer paper tube at intervals, the end parts of the inner oil guard device and the outer oil guard device at the notch parts are bent towards an oil inlet of the transformer, and an insulating layer is arranged on an inner wall of a transformer oil tank. According to the oil guard device and the transformer applying the device provided by the invention, the height of the oil guard device is reduced, the volume of the transformer is reduced, the amount of cooling oil entering the coil within unit time is increased, an insulating property is improved, and the temperature rise of the transformer is reduced, so that the aims of energy saving and cost lowering are achieved.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to an oil retaining device and a transformer using the device. Background technique [0002] With the continuous expansion of the application technology field, the application of transformers is becoming more and more extensive, and the competition in the transformer industry is becoming more and more fierce, and the cost of transformers is relatively high, especially for large transformers, the cost of materials is very high, and With the increase of transformer capacity, the loss increases accordingly, and the temperature rise control of the transformer coil becomes more and more difficult. Therefore, under this background, we must not only have safe and reliable product quality, but also the energy saving of the transformer must become impossible. missing edge. [0003] For example, the Chinese patent with the application number: 201510171689.9 discloses a paper tube oil re...

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Problems solved by technology

[0005] In order to overcome the problems of high cost and large volume of transformers in the prior art, the present invention provides an oil retaining device that is easy to process, saves energy, and can effectively reduce the volume of the transformer and a transformer using the device

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