Spiral cavity type sound insulation window device for ventilation and noise reduction of transformer

A technology of spiral cavity and sound insulation window, which is applied in the direction of transformer/inductor noise damping, transformer/inductor casing, etc., can solve the problems that cannot be used as transformer ventilation opening sound insulation window, complex and large array measurement system, poor ventilation performance, etc. , to achieve the effect of small area ratio, good low-frequency noise reduction effect, and simple installation

Active Publication Date: 2019-05-28
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the array measurement system of this device is too complex and large to be implemented, and its ventilation performance is poor, so it cannot be used as a sound insulation window for transformer vents

Method used

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  • Spiral cavity type sound insulation window device for ventilation and noise reduction of transformer
  • Spiral cavity type sound insulation window device for ventilation and noise reduction of transformer
  • Spiral cavity type sound insulation window device for ventilation and noise reduction of transformer

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] The spiral cavity type sound insulation window device of the present invention is as figure 1 shown.

[0026] Such as figure 2 As shown, the present invention includes a spiral cavity type sound insulation material unit 1 and a sound insulation device support bracket 2 , and the spiral cavity type sound insulation material unit 1 is embedded on the sound insulation device support bracket 2 .

[0027] The number of spiral cavity sound insulation material units 1 is a*b=m, where a, b, and m are positive integers, and m spiral cavity sound insulation material units form an array of a*b, and a and b are the arrays of each column and The number of spiral cavity sound insulation material units in each row. m spiral cavity type sound insulation material units are embedded in a sound insulation device supporting bracket 2 .

[0028] The spi...

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Abstract

A spiral cavity type sound insulation window device for ventilation and noise reduction of a transformer. The device comprises m (m=a*b) spiral cavity type sound insulation material units (1) and a sound insulation device supporting bracket (2), wherein a, b and m are positive integers, and a and b are the numbers of the spiral cavity type sound insulation material units (1) in each column and each row respectively. The m spiral cavity type sound insulation material units form an a*b array, wherein a and b are the numbers of the spiral cavity type sound insulation material units in each columnand each row respectively. The m spiral cavity type sound insulation material units (1) are embedded into the sound insulation device supporting bracket (2). Each spiral cavity type sound insulationmaterial unit (1) is composed of an elastic perforated film (6), a spiral metamaterial unit (7) and a cavity (8). The cavity (8) is a hollow cylinder with only one bottom surface and is horizontally arranged. The spiral metamaterial unit (7) is arranged in the cavity (8). The elastic perforated film (6) covers the front end surface of the cavity (8), namely the open surface of the hollow cylinder.

Description

technical field [0001] The invention relates to a sound insulation window device for transformer ventilation and noise reduction. Background technique [0002] With the acceleration of urbanization in my country, the number of substations is increasing and they are gradually approaching residential areas. The low-frequency noise generated by substations is not easy to attenuate and has a long transmission distance, which has seriously affected the physical and mental health of surrounding residents. Control and governance are imperative. The low-frequency noise generated by the transformer is mainly composed of transformer body noise and cooling device noise. The body noise is mainly generated by the magnetostrictive effect of the silicon steel sheet of the transformer core, mainly low-frequency noise at 100Hz and its integer multiples; the noise of the cooling device is broadband noise, mainly generated by the operation of the fan. [0003] For the noise reduction of the w...

Claims

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Application Information

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IPC IPC(8): H01F27/33H01F27/02
Inventor 李彩莲赵欣哲刘国强
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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