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Noise-reducing and sound-absorbing shielding cover for transformer

A transformer and shielding cover technology, which is applied in transformer/inductor noise damping, transformer/inductor cooling, transformer/inductor components, etc., can solve the problem of high cost of sound insulation and noise reduction, poor windproof effect, and inconvenient disassembly and other problems, to achieve the effect of reducing heat dissipation, facilitating disassembly and installation, and stable structure

Active Publication Date: 2021-06-15
STATE GRID HEBEI ELECTRIC POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems of high cost of sound insulation and noise reduction treatment around the transformer, inconvenient disassembly and poor windproof effect, the present invention provides a noise reduction and sound absorption shielding cover for transformers

Method used

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  • Noise-reducing and sound-absorbing shielding cover for transformer
  • Noise-reducing and sound-absorbing shielding cover for transformer
  • Noise-reducing and sound-absorbing shielding cover for transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Applied around an oil-immersed transformer with a voltage level of 110kV and a capacity of 50MVA, the thickness of the flame-retardant nylon mesh plate in each component unit of the noise-reducing and sound-absorbing shield is 2mm, and the thickness of the sound-absorbing cotton wrapped in glass silk cloth is 50mm. The thickness of the epoxy resin plate is 4mm. After testing, the noise value comparison of the surrounding environment noise of the transformer before and after installing the noise reduction and sound absorption shielding cover is shown in Table 1.

Embodiment 2

[0062] Applied around an oil-immersed transformer with a voltage level of 220kV and a capacity of 240MVA, the thickness of the flame-retardant nylon mesh plate in each component unit of the noise-reducing and sound-absorbing shield is 3mm, and the thickness of the sound-absorbing cotton wrapped in glass silk cloth is 70mm. The thickness of the epoxy resin plate is 6mm. After testing, the noise value comparison of the surrounding environment noise of the transformer before and after installing the noise reduction and sound absorption shielding cover is shown in Table 1.

[0063] Table 1 Comparison of the noise value of the ambient noise around the transformer before and after installing the noise-reducing and sound-absorbing shield

[0064]

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Abstract

The invention relates to a noise-reducing and sound-absorbing shielding cover for a transformer, which includes a noise-reducing and sound-absorbing shielding ventilation device and a noise-reducing and sound-absorbing shielding and cooling device arranged above the noise-reducing and sound-absorbing shielding and ventilation device. There is a noise-reducing and sound-absorbing shielding inspection door, and the noise-reducing, sound-absorbing, shielding and heat-dissipating device is arc-shaped, and a heat-dissipating area is arranged on the noise-reducing, sound-absorbing and shielding heat-dissipating device; Stable, windproof, economical and durable, easy to disassemble and install, especially suitable for noise reduction in the surrounding environment of open-air horizontal ground substations.

Description

technical field [0001] The invention belongs to the technical field of noise control, in particular to a noise-reducing and sound-absorbing shielding cover for a transformer. Background technique [0002] Transformer can reasonably transmit, distribute and use electric energy, it has become an extremely large number of electrical equipment in the power system, and has a very important position. In recent years, with the sharp increase in industrial, agricultural and residential electricity consumption, many large-capacity transformers have been gradually installed in the center of electricity loads near urban areas and residential areas with a large population, while small and medium-capacity transformers have been widely installed in residential areas. , making the noise problem caused by the transformer increasingly prominent. [0003] The noise generated by the operation of the transformer is mainly the noise in the low frequency band, which is mainly within 500Hz, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/33H01F27/36H01F27/08
CPCH01F27/085H01F27/33H01F27/36
Inventor 韩学宋文乐王磊熊天军刘俊刘杨
Owner STATE GRID HEBEI ELECTRIC POWER CO LTD
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