Low-noise amorphous alloy oil immersed transformer and manufacturing method thereof

Abstract

The invention discloses a low-noise amorphous alloy oil immersed transformer and a manufacturing method thereof. The low-noise amorphous alloy oil immersed transformer comprises a transformer body, a first silencing assembly and a second silencing assembly. The first silencing assembly is arranged on the outer surface of a core column and / or an upper iron yoke of the transformer body and is tightly connected with the outer surface of the core column and / or the outer surface of the upper iron yoke; the second silencing assembly is arranged on the outer surface of the iron core lap joint of the transformer body. The surface of the core column and the surface of the upper iron yoke of the transformer body are wrapped with the silencing materials, noise generated by the amorphous alloy iron core is integrally reduced, the problem that the amorphous alloy oil change noise of the transformer is large due to the fact that the transformer is affected by the material of the strip and external force is solved, and the influence of a noise sensitive area on the noise of the transformer is met.

Description

technical field [0001] The invention relates to the technical field of power equipment manufacturing, in particular to a low-noise amorphous alloy oil-immersed transformer and a manufacturing method thereof. Background technique [0002] With the improvement of people's living standards, the requirements for the surrounding environment are getting higher and higher, and low-noise transformers are already the main direction of future development. At the same time, the no-load loss of the amorphous alloy transformer is about 75% lower than the specified value of the S9 series, and about 65% lower than that of the S11 (silicon steel coil core). Amorphous alloy iron core transformers can greatly reduce operating costs and have remarkable energy-saving effects, and are products vigorously promoted by the country. The disadvantage of the amorphous alloy transformer is that it is noisy, which is mainly caused by the magnetostriction of the magnetically conductive material. The mag...

AI Technical Summary

Problems solved by technology

The disadvantage of the amorphous alloy transformer is that it is noisy, which is mainly caused by the magnetostriction of the magnetically conductive material. The magnetostriction of the amorphous alloy is 10% larger than that of the silicon steel sheet; secondly, the amorphous alloy strip is hard and brittle and cannot The effect of bearing force, the stress of the amorphous alloy core assembly process is also the main reason for the larger noise of the amorphous oil changeover

At present, most manufacturers reduce the noise of amorphous alloy oil change mainly from the material and design of the iron core, which will inevitably lead to an increase in material costs

The cost of existing products is relatively high, and the noise meets the national standard, but it does not meet the requirements of special areas, such as the noise requirements of sensitive areas

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