Low-noise dry-type transformer

Abstract

The invention relates to the technical field of electrical equipment, in particular to a low-noise dry-type transformer. Three windings are installed in parallel at the upper ends of installing bases, an upper clamping part and a lower clamping part are arranged at the upper end and the lower end of each winding respectively, and cooling fans are installed inside the lower clamping parts. Low-voltage outgoing line copper bars and high-voltage terminals are installed on the upper clamping parts, high-voltage tapping points are arranged on the front sides of the windings, and the high-voltage terminals are connected with the windings through high-voltage connecting rods. Multiple sets of shock absorbers are fixedly installed at the lower ends of the installing bases through bolt assemblies, iron plates are fixedly installed at the lower ends of the shock absorbers, and rubber shock absorption cushion blocks are fixedly installed at the lower ends of the iron plates. The low-noise dry-type transformer is novel in design and simple in structure; because the shock absorbers are installed at the bottom of the transformer, shocks generated by the transformer in the operation process are counteracted, then noise is eliminated, the service life of the transformer is prolonged, and the failure rate is decreased.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a low-noise dry-type transformer. Background technique [0002] In recent years, more and more large transformers have been used in residential and public places, which puts forward certain requirements for the noise of large transformers and small and medium-sized transformers. The noise problem of transformers has attracted more and more people's attention. How to reduce transformer noise has become an urgent problem in the transformer manufacturing industry. [0003] The audible noise emitted by the transformer is caused by the magnetostrictive deformation of the iron core and the electromagnetic force in the winding, oil tank and magnetic shield. In the past, it has been considered that the noise generated by the magnetic field-induced longitudinal vibration of the core laminations is the main component of the transformer noise. The amplitude of this vibration...

AI Technical Summary

Problems solved by technology

In addition, if the transformer is not installed smoothly, it is also prone to noise.

[0004] At present, people in the industry have made many improvement measures to solve the noise problem of transformers, such as: increasing the sound insulation layer to reduce noise, installing noise generators, changing core materials, etc., but these methods cannot completely eliminate noise.

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