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Power capacitor possessing noise shield device

A technology for power capacitors and noise shielding, applied in capacitors, electrical components, etc., can solve problems affecting the ventilation and heat dissipation of capacitor devices, difficulty in processing noise shielding materials, aging of noise shielding devices, etc., and achieve long service life, low use cost, Effect of reducing noise level

Active Publication Date: 2013-02-27
NISSIN ELECTRIC WUXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, some noise shielding devices have their own defects, such as: 1- The absorbed noise spectrum range is narrow, resulting in insignificant shielding effect; 2- It affects the ventilation and heat dissipation of the capacitor device; 3- Outdoor noise shielding devices are easily accelerated by wind, sun and sun. Aging; 4-Noise shielding materials are difficult to process and high in cost

Method used

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  • Power capacitor possessing noise shield device
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Embodiment Construction

[0016] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0017] Such as Figure 1~Figure 4 As shown: the present invention includes a bottom shielding layer 1 , a casing 2 , a power capacitor 3 , a top cover shielding layer 4 , connecting terminals 5 and installation positioning holes 6 .

[0018] Such as figure 1 , image 3 with Figure 4 Shown: is a structural schematic diagram of a noise shielding device provided outside the casing 2 of the power capacitor 3 of the present invention. One end of the housing 2 is provided with symmetrically distributed connecting terminals 5, and there are two connecting terminals 5; the end of the housing 2 corresponding to the setting of the connecting terminals 5 forms the top of the power capacitor 3, and the other end of the housing 2 forms a power capacitor 3 at the bottom. The bottom outside the housing 2 is provided with a bottom shielding layer 1, and the top outside t...

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Abstract

The invention relates to a power capacitor possessing a noise shield device. The power capacitor possessing a noise shield device comprises a power capacitor and a shell. A bottom of the shell is equipped with a bottom shielding layer. A shape of the bottom shielding layer matches with the shape of the shell bottom. A shell top is provided with a head cover shielding layer. The shape of the head cover shielding layer matches with the shape of the shell top. The bottom shielding layer is installed on the bottom out of the shell or the bottom in the shell. The head cover shielding layer is installed on the top out of the shell or the top in the shell. The bottom shielding layer and the head cover shielding layer are made of foamed aluminium. Materials of the bottom shielding layer and the head cover shielding layer are light and have characteristics of sound absorption and sound insulation, energy absorption and electronic shielding electromagnetic wave. A frequency spectrum scope of the absorbed noise is wide. Ventilation and heat dissipation of the power capacitor can not be influenced. A noise level of the power capacitor can be reduced. A structure is simple and compact. Installation and usage are convenient. A shielding effect is good. A service life is long. Usage costs are low. The power capacitor is safe and reliable.

Description

technical field [0001] The invention relates to a noise shielding device, in particular to a power capacitor with a noise shielding device, and belongs to the technical field of power capacitor noise shielding. Background technique [0002] With the development of my country's electric power industry and the improvement of people's awareness of environmental protection, how to reduce or even eliminate the noise pollution of power capacitors has become a new topic. [0003] At present, the noise control of power capacitors mainly relies on the addition of shielding devices. The shielding device is generally made of special materials, which can absorb a certain frequency spectrum or a certain frequency band of spectral noise, so as to achieve the purpose of reducing the noise emitted by the entire device. [0004] However, some noise shielding devices have their own defects, such as: 1- The absorbed noise spectrum range is narrow, resulting in insignificant shielding effect; ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G2/00H01G2/10H01G2/22
Inventor 姚一峰薛冠军许伟钱皓雍吴洪林
Owner NISSIN ELECTRIC WUXI
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