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Noise reduction structure of main noise resources of urban indoor substation

A technology of substation and noise source, applied in the field of noise reduction structure, can solve the problem of not considering the characteristics of substation itself, and achieve the effect of increasing the perimeter of the channel section, improving the sound absorption performance, and suppressing vibration

Active Publication Date: 2011-04-20
CEEC JIANGSU ELECTRIC POWER DESIGN INST +1
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  • Application Information

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Problems solved by technology

[0004] At present, the noise control of substations is limited to the local noise reduction control of doors, windows and walls, and most of them copy other noise control engineering schemes without considering the characteristics of substations themselves. Therefore, the noise control measures of urban indoor substations need to be improved urgently

Method used

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  • Noise reduction structure of main noise resources of urban indoor substation
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  • Noise reduction structure of main noise resources of urban indoor substation

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specific Embodiment approach

[0030] 1. The 220kV main transformer and 10kV shunt reactor of the city's indoor substation are placed in the machine room, and the perforated plate resonant sound-absorbing structure 2 is laid on the surface of the 240mm plastered brick wall in the machine room. The inner surface of the perforated board resonant sound-absorbing structure 2 is a perforated gypsum board 2-2, which constitutes a plurality of parallel Helmholtz resonators, which improves the sound absorption performance of the wall for low-frequency sound and widens the sound absorption of the structure frequency band. Acrylic cotton 2-1 is placed in the space 100mm behind the perforated gypsum board 2-2, and its bulk density is 20kg / m 3 , to further increase the sound resistance and improve the sound absorption effect. The perforated plate resonant sound-absorbing structure 2 can increase the noise reduction of the urban indoor substation by 24dB.

[0031] 2. The fire-proof and sound-proof door 3 used in the 2...

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Abstract

The invention relates to a noise reduction structure of main noise resources of an urban indoor substation, belonging to the technical field of noise pollution control in environmental engineering. The noise reduction structure is mainly used for reducing the noise resources of the urban indoor substation, including noise radiated by a main transformer and a reactor 1. The noise reduction structure comprises a wall perforated plate resonance sound absorption structure 2, a sound isolation door 3, a ventilating shutter 4, a low-noise axial flow fan 5, an air intake silencer 6 and an air exhaust silencer 7, wherein the wall perforated plate resonance absorption structure 2 is located inside the wall and comprises a perforated gypsum plate and acrylic cotton; the sound isolation door 3 is filled with glass coated intermediate glass cotton fiber, and the gap of a door frame is filled with sealing strips; the ventilating shutter 4 and the low-noise axial flow fan 5 are used for ventilating and dissipating heat to ensure the safe and stable operation of the main transformer and the reactor; the air intake silencer 6 is installed on the outer part of the ventilating shutter 4, the upper part is a lighting sound-isolating window cover, and the lower part is an air flow channel covering the sound absorption material; and the air exhaust silencer 7 is installed outside a ventilating fan hole, and the interior is an air flow channel covering the sound absorption material.

Description

technical field [0001] The invention relates to the technical field of environmental engineering noise pollution prevention and control, in particular to a noise reduction structure for the main noise sources of urban indoor substations—main transformers and reactors. Background technique [0002] Environmental problems are global issues of common concern to mankind, and noise pollution has become one of the primary environmental problems to be overcome in the 21st century. Industrial noise, urban traffic noise and domestic noise constitute the three main sources of environmental noise. Industrial noise bears the brunt of the largest environmental noise pollution, and substation noise is one of the main noise sources in industrial noise. With the rapid development of urban construction, indoor substations continue to increase, and substations inevitably enter densely populated areas. At the same time, some remote substations are also being surrounded by newly built resident...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04H5/04E04B1/82E04B1/86E06B5/16E06B5/20E06B3/70E06B7/22E06B7/23E06B7/02E06B7/08F24F13/24
Inventor 仲兆平杨敏卫银忠胡继军邵俊伟王磊
Owner CEEC JIANGSU ELECTRIC POWER DESIGN INST
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