Environment-friendly oil immersed transformer

Abstract

The invention discloses an environment-friendly oil immersed transformer. The environment-friendly oil immersed transformer comprises an oil tank outer shell, an oil tank inner shell, an iron core and a winding located at the center of the oil tank inner shell, an oil purification device located at the two sides of the iron core and the winding and forms a cavity together with the sidewall of the oil tank inner shell, and a noise reduction device located between the oil tank inner shell and the oil tank outer shell. The noise reduction device comprises a noise reduction interlayer and a cooling interlayer; the noise reduction interlayer which adopts a porous glass wool board has the closest distance to a noise resource and can absorb noise efficiently; as the noise reduction interlayer is installed in the oil tank, diffusion of fiber fines can be avoided, and environment pollution can be reduced; as the cooling interlayer is located between the oil purification device and the noise reduction interlayer, the temperature of transformer oil can be reduced efficiently; as the oil purification device is an enforced purification device arranged in the oil tank, the oil purification device comprises a first purifier used for filtering away nonmetal impurities and a second purifier used for adsorbing metal impurities and has no air exchange with the exterior, the degree of purity of the transformer oil can be increased; and as the noise reduction device and the oil purification device are in mutual coordination, the effect of giving consideration to noise reduction, oil purification and cooling is realized, and good environment-friendly and energy-saving performances are obtained.

Description

technical field [0001] The invention relates to the field of transformers, and mainly relates to an environment-friendly oil-immersed transformer. Background technique [0002] Transformers are one of the indispensable main equipment for power plants and substations. According to the cooling method, they can be roughly divided into dry-type transformers, oil-immersed transformers, and fluoride transformers. Oil-immersed transformers are mainly composed of iron cores, windings, oil tanks, Oil conservator, insulating bushing, tap changer and gas relay, etc., but the transformer has the following problems in actual use: [0003] (1) At present, most of the oil purifiers are installed on one side of the transformer oil tank, and the built-in adsorbent is used to absorb moisture, acid and metal impurities in the oil through the oil circulation, so as to maintain the cleanliness of the transformer oil and prolong the service life of the transformer , but the disadvantage of this ...

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Problems solved by technology

[0003] (1) At present, most of the oil purifiers are installed on one side of the transformer oil tank, and the built-in adsorbent is used to absorb moisture, acid and metal impurities in the oil through the oil circulation, so as to maintain the cleanliness of the transformer oil and prolong the service life of the transformer , but the disadvantage of this type of device is that for a transformer with stable operation, the temperature difference between the upper and lower parts of the oil tank is not very large, the convection formed inside is very slow, and the circulation purification effect is not good; in addition, the commonly used oil purifier Most of them are set as adsorbents, which can purify the transformer oil and prolong the service life of transformer oil through adsorption and filtration. However, the adsorbent does not have the effect of adsorbing metal impurities, so it cannot completely clean the transformer oil. Replacement, but to replace the adsorbent, the transformer oil in the oil tank needs to be drained, which is inconvenient to operate and wastes transformer oil at the same time;

[0004] (2) When the transformer is in operation, the alternating magnetic field produces periodic alternating force on the iron core and coil to cause vibration, which is transmitted to the oil tank through the iron core clamp and footing to generate a lot of noise, which affects the daily life of the surrounding residents. Life; with the strengthening of social environmental protection awareness, people's perception and understanding of noise and control are becoming increasingly strict. At present, there are some means to reduce the noise generated by transformers, such as installing sound insulation walls in transformer rooms, and using porous felt, fiber rock, etc. Cotton and other sound-absorbing materials are pasted on the wall and ceiling, or made into sound-absorbing blocks and hung indoors. Although this method has certain effects, it takes up an area and is expensive, and materials such as felt, fiber rock wool, etc. The fibers are small and brittle, and dust pollution will be formed in the air after breaking, which will cause environmental pollution and even cause workers to breathe poorly.

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