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Apparatus for reducing noises of high-capacity power transformer

A technology of power transformers and transformers, which is applied in the field of transformers, can solve the problems of poor noise reduction effects of transformers, and achieve the effects of reducing noise transmission and increasing sound insulation effects

Inactive Publication Date: 2016-10-26
CHENGDU SHUANGXING TRANSFORMER
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to provide a device for reducing the noise of large-capacity power transformers in view of the poor noise reduction effect of transformers in the prior art. Reduce transformer noise, better noise reduction effect

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  • Apparatus for reducing noises of high-capacity power transformer

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Embodiment Construction

[0025] refer to Figure 1-8 , a device for reducing the noise of a large-capacity power transformer of the present invention, the large-capacity transformer includes a transformer oil tank 1, a radiator 2 and a transformer body 4, the transformer body 4 includes an iron core 401, and the winding of the iron core 401 There are several steps formed by stacking silicon steel sheets and silicon steel sheets on the cylinder, and a phenolic rod 9 is arranged in each step. Due to the magnetostrictive effect of the iron core 401 of the transformer, the iron core 401 stretches and vibrates, resulting in increased noise. By setting the phenolic rod 9 at the step portion of the iron core 401, the vibration of the iron core 401 can be reduced and the noise can be reduced. .

[0026] The four square corners of the iron core 401 are provided with sound-insulating rubber plates 10, and the sound-insulating rubber plates 10 are wrapped around each square corner of the iron core 401, and the ...

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Abstract

The invention discloses an apparatus for reducing noises of a high-capacity power transformer. The high-capacity power transformer comprises a transformer oil tank, radiators and a transformer body. The transformer body includes an iron core. The transformer oil tank has an oil tank wall; an inner oil tank wall having a corrugated structure is arranged at the inner side of the oil tank wall; a plurality of filling cavities distributed at intervals are formed between the inner oil tank wall and the oil tank wall; and sand separation layers are arranged in the filling cavities. Besides, oil tank connecting pipes connecting the radiators are ranged between the filling cavities; the radiators are provided with radiator connecting pipes connecting the oil tank; and the oil tank connecting pipes and the radiator connecting pipes are connected by corrugated pipe joints. According to the apparatus, noise reducing mechanisms are arranged at all transmittable parts or parts causing noises of the transformer, so that transformer noises can be reduced comprehensively and the noise reducing effect is good.

Description

technical field [0001] The invention belongs to the technical field of transformers, in particular to a device for reducing the noise of a large-capacity power transformer. Background technique [0002] Large-capacity power transformers mainly refer to 110kV and 220kV power transformers. Generally, iron-core transformer bodies are used, and their power is relatively large. When the transformer is working, the silicon steel sheet will continuously vibrate due to the magnetostrictive effect, resulting in a very low noise. , Seriously affecting the lives of residents around the transformer. The existing method of transformer noise reduction is mainly to make changes in the installation of the transformer and the casing of the transformer. For example, during installation, the transformer is fixed on the bracket through rubber pads and other damping elements, and the noise of the transformer is reduced. However, The noise reduction effect is still not very obvious. Contents o...

Claims

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Application Information

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IPC IPC(8): H01F27/14H01F27/33H01F27/08H01F27/06
CPCH01F27/14H01F27/06H01F27/08H01F27/33
Inventor 孙日明王艳萍杨剑
Owner CHENGDU SHUANGXING TRANSFORMER
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