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Sound barrier device for noise reduction of transformer fans

A sound barrier and transformer technology, applied in the direction of floors, building components, sound insulation, etc., can solve the problems of large occupation area and difficult reconstruction, and achieve the effect of small footprint, noise reduction and noise reduction.

Inactive Publication Date: 2018-12-18
ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the device occupies a large area, and it is difficult to transform the transformers that have been put into use.

Method used

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  • Sound barrier device for noise reduction of transformer fans
  • Sound barrier device for noise reduction of transformer fans
  • Sound barrier device for noise reduction of transformer fans

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Such as figure 2 As shown, the sound barrier device of the present invention includes an acoustic metamaterial barrier 1 and a sound barrier support 2 . The acoustic metamaterial barrier 1 is composed of an acoustic metamaterial barrier unit 5 and is fixed by an acoustic barrier bracket 2 .

[0023] Such as figure 1 As shown, the sound barrier device of the present invention is placed outside the transformer fan, the longitudinal axis of the acoustic metamaterial barrier 1 is on the same plane as the central axis of the impeller of the transformer fan, and the acoustic metamaterial barrier is separated from the transformer fan by a certain distance, such as 500mm, so that It does not obstruct the ventilation of the fan.

[0024] Such as image 3 As shown, the acoustic metamaterial barrier 1 of the embodiment of the present invention...

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Abstract

The invention relates to a sound barrier device for noise reduction of transformer fans. The sound barrier device for noise reduction of transformer fans includes an acoustic meta-material barrier (1)and a sound barrier support (2), wherein the acoustic meta-material barrier (1) is fixed by the sound barrier support (2); one surface, facing the transformer fans, of the sound barrier support (2) is equipped with a rectangular through hole; the acoustic meta-material barrier (1) is embedded in the rectangular through hole; the acoustic meta-material barrier (1) is formed through splicing of n acoustic meta-material barrier units in a length direction, and n is a positive integer; each acoustic meta-material barrier unit is a rectangle, and zigzag acoustic waveguides with equal width are arranged in the rectangle, and the acoustic waveguides are fixed through a rectangular base plate; the shape of each acoustic waveguide in the horizontal section is a curve, and the shape is the same oneach horizontal section; the air can be propagated along the acoustic waveguides in the acoustic meta-material barrier units; and the acoustic wave is deflected and reflected many times in the long waveguides to consume most of the sound energy, thus greatly reducing the noise of the transformer fans.

Description

technical field [0001] The invention relates to a sound barrier device for noise reduction of a fan of a transformer. Background technique [0002] Substation is an important place for power transmission and transformation in the power system. In order to improve the quality of urban power supply and reduce the loss of electric energy during transmission, some substations need to be built in urban areas that are closer to residential areas. In order to ensure that the residents around the substation are not affected by the operation noise of the transformer, it is necessary to control the noise of the transformer reasonably. [0003] The noise of the transformer mainly comes from the vibration noise of the iron core caused by magnetostriction, the noise frequency is 100Hz multiplied, and the broadband noise generated by the operation of the cooling device, that is, the cooling fan. Therefore, the broadband noise control of the transformer cooling fan becomes one of the imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/82
CPCE04B1/8227
Inventor 俞华刘国强张超晋涛王天正赵欣哲霍亚俊刘永鑫孟晓凯
Owner ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER
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