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Efficient composite sound insulation board

A sound insulation board and high-efficiency technology, applied in the direction of transformer/inductor noise damping, etc., to achieve the effect of optimizing sound insulation effect, weather-resistant construction, and increasing material strength

Inactive Publication Date: 2020-07-31
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

[0004] The technical problem to be solved by the present invention is to improve the sound insulation effect on the low-frequency noise of the distribution transformer, and ensure that the noise reduction device meets the service requirements of the power distribution room

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A high-efficiency composite sound insulation board, the sound insulation board adopts a sandwich composite structure, including double-layer high-density FRP, and the middle of the double-layer high-density FRP is filled with aluminum fiber felt. Density FRP and inner high-density FRP.

[0026] The high-density FRP is made of the following raw materials in parts by weight: 80 parts of unsaturated polyester resin, 30 parts of alkali-free glass fiber, 5 parts of cyclohexanone peroxide, 10 parts of tert-butyl peroxybenzoate, phthalic acid 2 parts of dipropylene fat, 50 parts of iron powder, 0.5 part of organosiloxane, the density of the high-density fiberglass is 1.4-2.1g / cm 3 .

[0027] The thickness of high-density FRP on the inner side (that is, the side facing the sound source) is 1 mm, and microholes with a diameter of 0.5 mm are opened on the board, and the perforation rate is 10%. The thickness of the outer high-density FRP is 1.5mm, and the distance between the i...

Embodiment 2

[0029] A high-efficiency composite sound insulation board, the sound insulation board adopts a sandwich composite structure, including double-layer high-density FRP, and the middle of the double-layer high-density FRP is filled with aluminum fiber felt. Density FRP and inner high-density FRP.

[0030] The high-density FRP is made of the following raw materials in parts by weight: 95 parts of unsaturated polyester resin, 34 parts of medium-alkali glass fiber, 7 parts of dibenzoyl peroxide, 13 parts of p-hydroxybenzenesulfonic acid, 3 parts of octyl ester, 80 parts of aluminum powder, 0.7 part of organosiloxane, the density of the high-density glass fiber reinforced plastic is 1.4-2.1g / cm 3 .

[0031] The thickness of the high-density FRP on the inner side (that is, the side facing the sound source) is 1.5mm, and microholes with a diameter of 0.5mm are opened on the board, and the perforation rate is 13%. The thickness of the outer high-density FRP is 2mm, and the distance bet...

Embodiment 3

[0034] A high-efficiency composite sound insulation board, the sound insulation board adopts a sandwich composite structure, including double-layer high-density FRP, and the middle of the double-layer high-density FRP is filled with aluminum fiber felt. Density FRP and inner high-density FRP.

[0035] The high-density FRP is made of the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 40 parts of alkali-free glass fiber, 10 parts of zinc stearate, 15 parts of methyl ethyl ketone peroxide, 4 parts of diisononyl phthalate part, 100 parts of clay, 1 part of organosiloxane, and the density of the high-density FRP is 1.4-2.1g / cm 3 .

[0036] The thickness of the high-density FRP on the inner side (that is, the side facing the sound source) is 1.5mm, and microholes with a diameter of 0.8mm are opened on the board, and the perforation rate is 15%. The thickness of the outer high-density FRP is 2.5mm, and the distance between the inner high-densi...

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Abstract

The invention relates to an efficient composite sound insulation board, which is of a sandwich type composite structure and comprises double-layer high-density glass fiber reinforced plastics, whereinthe middle of the double-layer high-density glass fiber reinforced plastics is filled with aluminum fiber felt, and the double-layer high-density glass fiber reinforced plastics are divided into outer-side high-density glass fiber reinforced plastics and inner-side high-density glass fiber reinforced plastics. Through component proportion design and structure optimization, the sound absorption and sound insulation board provided by the invention is high in low-frequency sound insulation quantity, good in mechanical strength, toughness, corrosion resistance and weather resistance, and capableof effectively blocking propagation of low-frequency noise of equipment such as transformers, electric reactors and the like.

Description

technical field [0001] The invention relates to the technical field of equipment noise and vibration control materials, in particular to a high-efficiency composite sound insulation board. Background technique [0002] With the continuous increase of the scale of the power grid and the shortage of urban land resources, more and more substations are located deep into the city center. Due to a series of reasons such as uneven manufacturing process, aging equipment, long-term operation, and close distance to sensitive points, the noise pollution problem of power transformers has become increasingly prominent, especially for residential power distribution rooms, where the surrounding population density is high. Once the noise of the distribution transformer exceeds the standard , will directly affect the normal life of residents. Moreover, there are a large number of power distribution rooms. According to statistics, there are more than 4,300 power distribution rooms in a certa...

Claims

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Application Information

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IPC IPC(8): H01F27/33C08L67/06C08K13/04C08K7/14C08K5/14C08K5/098C08K5/42C08K3/08C08K3/34C08K5/12
CPCC08K3/08C08K3/346C08K5/098C08K5/12C08K5/14C08K5/42C08K7/14C08K13/04C08K2003/0812C08K2003/0856H01F27/33C08L67/06
Inventor 韩学刘志远宋文乐王磊
Owner STATE GRID HEBEI ELECTRIC POWER CO LTD
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