CN204164042U - A kind of air exhausting soundproofing elbow for 35kV transformer chamber - Google Patents

A kind of air exhausting soundproofing elbow for 35kV transformer chamber Download PDF

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Publication number
CN204164042U
CN204164042U CN201420574189.0U CN201420574189U CN204164042U CN 204164042 U CN204164042 U CN 204164042U CN 201420574189 U CN201420574189 U CN 201420574189U CN 204164042 U CN204164042 U CN 204164042U
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China
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elbow
exhaust
main transformer
air outlet
air
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宗明
李明
陈锦栋
黄维华
王骅
朱钦
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SHANGHAI ELECTROPHYSICS COLLECTIVE ASSET MANAGEMENT CO Ltd
State Grid Shanghai Electric Power Co Ltd
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SHANGHAI ELECTROPHYSICS COLLECTIVE ASSET MANAGEMENT CO Ltd
State Grid Shanghai Electric Power Co Ltd
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Abstract

本实用新型公开了一种用于35kV主变室的排风消声弯头,安装于35kV主变室外墙上的壁式轴流排风机的出风口处,包括外壳和设于该外壳内的通风空腔,通风空腔于所述外壳上分别设有入风口和出风口,通风空腔入风口的中心线与室壁式轴流排风机的中心线重合,还包括设置于外壳上且位于出风口处的不锈钢丝网和设置于通风空腔中心处并沿其延伸方向延伸的消声片,消声片的入风端设有锥形导流件,且该锥形导流件的顶端与入风口的所处平面之间设有间隙,消声片的另一端与出风口所处的平面齐平。本实用新型排风消声弯头的整体消声量更高,较现有技术可提高3dB(A)以上,且在35kV变压器噪声的峰值频率处有更好的消声效果。

The utility model discloses an exhaust muffler elbow for a 35kV main transformer room, which is installed at the air outlet of a wall-type axial flow exhaust fan on the outer wall of the 35kV main transformer, including a casing and a A ventilation cavity, the ventilation cavity is respectively provided with an air inlet and an air outlet on the housing, the center line of the air inlet of the ventilation cavity coincides with the center line of the wall-type axial flow exhaust fan, and it also includes a The stainless steel wire mesh at the air outlet and the sound-absorbing sheet arranged at the center of the ventilation cavity and extending along its extension direction, the air-inlet end of the sound-absorbing sheet is provided with a conical flow guide, and the top of the conical flow guide A gap is provided between the plane where the air inlet is located, and the other end of the sound-absorbing sheet is flush with the plane where the air outlet is located. The overall noise reduction capacity of the exhaust noise reduction elbow of the utility model is higher, which can be increased by more than 3dB(A) compared with the prior art, and has a better noise reduction effect at the peak frequency of 35kV transformer noise.

Description

一种用于35kV主变室的排风消声弯头An Exhaust and Noise Reduction Elbow for 35kV Main Transformer Room

技术领域technical field

本实用新型涉及环境工程技术领域,尤其涉及一种用于35kV主变室的排风消声弯头。The utility model relates to the technical field of environmental engineering, in particular to an exhaust and noise-eliminating elbow for a 35kV main transformer room.

背景技术Background technique

随着经济的发展和城市化进程的加快,城区的用电负荷不断增大,城区内的变电站也越来越多,尤其是直接向用户供电的35kV变电站越来越多地进驻到居民区、办公区。由于城区用地紧张,再加上变电站的噪声污染问题,因此城区内的35kV变电站大多为室内变电站,主变压器安装在35kV主变室内。对于35kV室内变电站,虽然变电站内最主要的噪声源——主变压器的噪声已基本被围隔在35kV主变室内,但是主变压器的噪声仍会通过主变室的排风口对外环境产生传播影响,再加上主变压器的噪声呈显著的窄带低频特性,其在100Hz、200Hz和400Hz处呈现声压级峰值,使得其低频声影响更加明显。此外,主变室通风散热的排风机自身也会产生噪声,其噪声也会随着排风对外环境产生传播影响。With the development of the economy and the acceleration of urbanization, the power load in urban areas is increasing, and there are more and more substations in urban areas, especially 35kV substations that directly supply power to users are increasingly stationed in residential areas, Workspace. Due to the shortage of land in urban areas and the noise pollution of substations, most of the 35kV substations in urban areas are indoor substations, and the main transformer is installed in the 35kV main transformer room. For a 35kV indoor substation, although the main noise source in the substation—the noise of the main transformer has been basically isolated in the 35kV main transformer room, the noise of the main transformer will still affect the external environment through the air outlet of the main transformer room. , coupled with the fact that the noise of the main transformer has a significant narrow-band low-frequency characteristic, which presents peak sound pressure levels at 100Hz, 200Hz and 400Hz, making its low-frequency sound effects more obvious. In addition, the exhaust fan itself for ventilation and heat dissipation in the main transformer room will also generate noise, and its noise will also affect the external environment along with the exhaust air.

目前城区内的大部分35kV室内变电站靠近居民楼,这些噪声会不可避免地对周边的居民产生影响,容易产生噪声传播影响导致的环境矛盾,已成为电网系统内一个主要的环境污染问题,急需对35kV主变室的排风口进行消声处理。At present, most of the 35kV indoor substations in the urban area are close to residential buildings. The noise will inevitably affect the surrounding residents, and it is easy to cause environmental conflicts caused by the impact of noise transmission. It has become a major environmental pollution problem in the power grid system. The exhaust outlet of the 35kV main transformer room is treated with noise reduction.

排风口进行消声处理的有效方法是在排风口上加装排风消声弯头。目前通风系统用的消声弯头普遍按照国标图集《ZP型片式消声器ZW型消声弯管》进行选用,ZW型消声弯管的消声量约10dB(A),但ZW型消声弯管在变压器噪声峰值频率处的消声量偏低,且其总的消声量也欠佳。此外,室内变电站的排风机采用的是壁式轴流风机,消声弯头安装时是直接套在排风机的出风口上,贴近排风机,而ZW型消声弯管只适用于安装在通风管路系统中,需与排风机隔开一定的距离。综上所述,ZW型消声弯管不适用于35kV主变室的排风消声。An effective way to deal with noise reduction at the exhaust outlet is to install an exhaust noise reduction elbow on the exhaust outlet. At present, the noise-absorbing elbows used in the ventilation system are generally selected according to the national standard atlas "ZP type sheet muffler ZW type noise-absorbing elbow". The sound attenuation of the bent pipe is low at the peak frequency of transformer noise, and its overall sound attenuation is also not good. In addition, the exhaust fan of the indoor substation uses a wall-type axial flow fan. When installing the silencing elbow, it is directly placed on the air outlet of the exhaust fan, close to the exhaust fan, and the ZW type silencing elbow is only suitable for installation in ventilation In the pipeline system, it needs to be separated from the exhaust fan by a certain distance. To sum up, the ZW type muffler elbow is not suitable for the exhaust muffler of the 35kV main transformer room.

发明内容Contents of the invention

本实用新型的目的,就是为了解决上述问题而提供了一种用于35kV主变室的排风消声弯头,具有较好的消声效果。The purpose of this utility model is to provide a kind of exhaust noise-elimination elbow for 35kV main transformer room in order to solve the above-mentioned problems, which has better noise-elimination effect.

本实用新型的目的是这样实现的:The purpose of this utility model is achieved in that:

本实用新型的一种用于35kV主变室的排风消声弯头,所述排风消声弯头安装于35kV主变室外墙上的壁式轴流排风机的出风口处,该排风消声弯头包括外壳和设于该外壳内的通风空腔,所述通风空腔于所述外壳上分别设有入风口和出风口,所述通风空腔入风口的中心线与所述室壁式轴流排风机的中心线重合,所述排风消声弯头还包括设置于所述外壳上且位于所述出风口处的不锈钢丝网和设置于所述通风空腔中心处并沿其延伸方向延伸的消声片,所述消声片的入风端设有锥形导流件,且该锥形导流件的顶端与所述入风口的所处平面之间设有间隙,所述消声片的另一端与所述出风口所处的平面齐平。The utility model relates to an exhaust muffler elbow for a 35kV main transformer room. The exhaust muffler elbow is installed at the air outlet of the wall-type axial flow exhaust fan on the outer wall of the 35kV main transformer. The wind muffler elbow includes a shell and a ventilation cavity arranged in the shell, and the ventilation cavity is respectively provided with an air inlet and an air outlet on the shell, and the centerline of the air inlet of the ventilation cavity is in line with the The center lines of the wall-type axial flow exhaust fan are coincident, and the exhaust muffler elbow also includes a stainless steel wire mesh arranged on the casing and at the air outlet and arranged at the center of the ventilation cavity and A sound-absorbing sheet extending along its extension direction, the air-inlet end of the sound-absorbing sheet is provided with a conical air guide, and a gap is provided between the top of the tapered air guide and the plane where the air inlet is located , the other end of the sound-absorbing sheet is flush with the plane where the air outlet is located.

上述的一种用于35kV主变室的排风消声弯头,其中,所述外壳包括由内而外依次设置的穿孔镀锌钢板/穿孔铝板、玻璃丝布、离心玻璃棉板和镀锌钢板,所述离心玻璃棉板内设置有轻钢龙骨。The above-mentioned exhaust muffler elbow for a 35kV main transformer room, wherein the shell includes perforated galvanized steel plate/perforated aluminum plate, glass cloth, centrifugal glass wool plate and galvanized steel plate arranged sequentially from inside to outside , the centrifugal glass wool board is provided with a light steel keel.

上述的一种用于35kV主变室的排风消声弯头,其中,所述消声片包括依次设置的穿孔镀锌钢板/穿孔铝板、玻璃丝布、离心玻璃棉板、玻璃丝布和穿孔镀锌钢板/穿孔铝板,所述离心玻璃棉板内设置有轻钢龙骨。The above-mentioned exhaust muffler elbow for a 35kV main transformer room, wherein the muffler sheet includes perforated galvanized steel plate/perforated aluminum plate, glass cloth, centrifugal glass wool board, glass cloth and perforated plated Zinc steel plate/perforated aluminum plate, light steel keel is arranged inside the centrifugal glass wool plate.

上述的一种用于35kV主变室的排风消声弯头,其中,所述不锈钢丝网的孔间距为10mm×10mm。The above-mentioned exhaust muffler elbow for a 35kV main transformer room, wherein the hole spacing of the stainless steel wire mesh is 10mm×10mm.

本实用新型与现有技术相比,整体消声量更高,可提高3dB(A)以上,且在35kV变压器噪声的峰值频率处有更好的消声效果。安装时,本实用新型排风消声弯头的入风口直接套在35kV主变室壁式轴流排风机的出风口即可,具有结构紧凑、安装方便、制造成本低的特点,尤其适用于35kV主变室的排风消声。Compared with the prior art, the utility model has higher overall noise reduction capacity, which can be increased by more than 3dB (A), and has better noise reduction effect at the peak frequency of 35kV transformer noise. During installation, the air inlet of the exhaust muffler elbow of the utility model can be directly set on the air outlet of the 35kV main transformer room wall type axial flow exhaust fan. It has the characteristics of compact structure, convenient installation and low manufacturing cost, especially suitable for 35kV main transformer room exhaust air muffler.

附图说明Description of drawings

图1是本实用新型的结构示意图;Fig. 1 is a structural representation of the utility model;

图2是本实用新型中外壳的截面示意图;Fig. 2 is a schematic cross-sectional view of the shell in the utility model;

图3是本实用新型中消声片的截面示意图。Fig. 3 is a schematic cross-sectional view of the noise damping sheet in the present invention.

具体实施方式Detailed ways

下面将结合附图,对本实用新型作进一步说明。Below in conjunction with accompanying drawing, the utility model is further described.

请参阅图1,图中示出了本实用新型一种用于35kV主变室的排风消声弯头,排风消声弯头安装于35kV主变室外墙6上的壁式轴流排风机5的出风口处,本实用新型排风消声弯头包括外壳1和设于该外壳1内的通风空腔7,通风空腔7于外壳1上分别设有入风口71和出风口72,通风空腔7入风口71的中心线与壁式轴流排风机5的中心线重合,本实用新型排风消声弯头还包括设置于外壳1上且位于出风口72处的不锈钢丝网4和设置于通风空腔7中心处并沿其延伸方向延伸的消声片2,消声片2的入风端设有锥形导流件3,且该锥形导流件3的顶端与入风口71的所处平面之间设有间隙,消声片2的另一端与出风口72所处的平面齐平,不锈钢丝网4的孔间距为10mm×10mm。Please refer to Fig. 1, which shows a kind of exhaust muffler elbow for 35kV main transformer room of the utility model, the exhaust muffler elbow is installed on the wall 6 on the outer wall 6 of the 35kV main transformer. At the air outlet of the blower fan 5, the exhaust muffler elbow of the utility model includes a casing 1 and a ventilation cavity 7 arranged in the casing 1, and the ventilation cavity 7 is respectively provided with an air inlet 71 and an air outlet 72 on the casing 1. , the centerline of the air inlet 71 of the ventilation cavity 7 coincides with the centerline of the wall-type axial flow exhaust fan 5, and the exhaust muffler elbow of the utility model also includes a stainless steel wire mesh arranged on the shell 1 and located at the air outlet 72 4 and the sound-absorbing sheet 2 arranged at the center of the ventilation cavity 7 and extending along its extension direction, the air-inlet end of the sound-absorbing sheet 2 is provided with a conical air guide 3, and the top of the tapered air guide 3 is connected to the There is a gap between the planes where the air inlet 71 is located, the other end of the sound-absorbing sheet 2 is flush with the plane where the air outlet 72 is located, and the hole spacing of the stainless steel wire mesh 4 is 10mm×10mm.

请参阅图2,外壳1包括由内而外依次设置的第一穿孔镀锌钢板/穿孔铝板15、第一玻璃丝布14、第一离心玻璃棉板13和镀锌钢板11,第一离心玻璃棉板13内设置有第一轻钢龙骨12。Please refer to Fig. 2, the shell 1 comprises the first perforated galvanized steel plate/perforated aluminum plate 15, the first glass cloth 14, the first centrifugal glass wool board 13 and the galvanized steel plate 11 arranged in sequence from the inside to the outside, the first centrifugal glass wool A first light steel keel 12 is arranged inside the board 13 .

请参阅图3,消声片2包括依次设置的第二穿孔镀锌钢板/穿孔铝板21、第二玻璃丝布23、第二离心玻璃棉板24、第二玻璃丝布23和第二穿孔镀锌钢板/穿孔铝板21,第二离心玻璃棉板24内设置有第二轻钢龙骨22。Please refer to Fig. 3, the noise reduction sheet 2 includes the second perforated galvanized steel plate/perforated aluminum plate 21, the second glass cloth 23, the second centrifugal glass wool board 24, the second glass cloth 23 and the second perforated galvanized steel plate arranged in sequence / The perforated aluminum plate 21 and the second centrifugal glass wool plate 24 are provided with a second light steel keel 22 .

本实用新型排风消声弯头为90°弯头,为阻性片式消声弯头。该消声弯头在35kV变压器噪声的峰值频率处具有更好的消声效果,且整体消声量较ZW型消声弯管提高3dB(A)以上。此外,该消声弯头在入风口71端设有锥形导流件3,可使气流平稳地进入消声弯头,可直接套装在壁式轴流排风机5的出风口上。综上所述,本实用新型排风消声弯头尤其适用于35kV主变室的排风消声。The exhaust and noise-eliminating elbow of the utility model is a 90° elbow, which is a resistive sheet-type noise-eliminating elbow. The silencing elbow has a better silencing effect at the peak frequency of 35kV transformer noise, and the overall silencing capacity is more than 3dB(A) higher than that of the ZW type silencing elbow. In addition, the muffler elbow is provided with a conical flow guide 3 at the end of the air inlet 71 to allow the air flow to enter the muffler elbow smoothly, and can be directly set on the air outlet of the wall-type axial flow exhaust fan 5 . To sum up, the exhaust and noise reduction elbow of the utility model is especially suitable for the exhaust and noise reduction of the 35kV main transformer room.

以上实施例仅供说明本实用新型之用,而非对本实用新型的限制,有关技术领域的技术人员,在不脱离本实用新型的精神和范围的情况下,还可以作出各种变换或变型,因此所有等同的技术方案也应该属于本实用新型的范畴,应由各权利要求所限定。The above embodiments are only for illustrating the utility model, rather than limiting the utility model. Those skilled in the art can also make various transformations or modifications without departing from the spirit and scope of the utility model. Therefore, all equivalent technical solutions should also belong to the category of the present utility model, and should be defined by each claim.

Claims (4)

1.一种用于35kV主变室的排风消声弯头,所述排风消声弯头安装于35kV主变室外墙上的壁式轴流排风机的出风口处,该排风消声弯头包括外壳和设于该外壳内的通风空腔,所述通风空腔于所述外壳上分别设有入风口和出风口,其特征在于,所述通风空腔入风口的中心线与所述室壁式轴流排风机的中心线重合,所述排风消声弯头还包括设置于所述外壳上且位于所述出风口处的不锈钢丝网和设置于所述通风空腔中心处并沿其延伸方向延伸的消声片,所述消声片的入风端设有锥形导流件,且该锥形导流件的顶端与所述入风口的所处平面之间设有间隙,所述消声片的另一端与所述出风口所处的平面齐平。1. An exhaust and noise-eliminating elbow for a 35kV main transformer room, the exhaust and noise-eliminating elbow is installed at the air outlet of the wall-type axial flow exhaust fan on the outer wall of the 35kV main transformer, the exhaust and noise-eliminating The acoustic elbow includes a casing and a ventilation cavity arranged in the casing, and the ventilation cavity is respectively provided with an air inlet and an air outlet on the casing. It is characterized in that the center line of the ventilation cavity air inlet is in line with the The centerlines of the wall-type axial flow exhaust fans are coincident, and the exhaust muffler elbow also includes a stainless steel wire mesh arranged on the casing and at the air outlet and arranged at the center of the ventilation cavity. The sound-absorbing sheet extending along the direction of its extension, the air-inlet end of the sound-absorbing sheet is provided with a conical air guide, and a conical air guide is provided between the top of the tapered air guide and the plane where the air inlet is located. There is a gap, and the other end of the sound-absorbing sheet is flush with the plane where the air outlet is located. 2.如权利要求1所述的一种用于35kV主变室的排风消声弯头,其特征在于,所述外壳包括由内而外依次设置的穿孔镀锌钢板/穿孔铝板、玻璃丝布、离心玻璃棉板和镀锌钢板,所述离心玻璃棉板内设置有轻钢龙骨。2. An exhaust muffler elbow for 35kV main transformer room according to claim 1, characterized in that, the shell comprises perforated galvanized steel plate/perforated aluminum plate and glass cloth which are sequentially arranged from inside to outside , Centrifugal glass wool board and galvanized steel plate, the centrifugal glass wool board is provided with a light steel keel. 3.如权利要求1所述的一种用于35kV主变室的排风消声弯头,其特征在于,所述消声片包括依次设置的穿孔镀锌钢板/穿孔铝板、玻璃丝布、离心玻璃棉板、玻璃丝布和穿孔镀锌钢板/穿孔铝板,所述离心玻璃棉板内设置有轻钢龙骨。3. A kind of exhaust muffler elbow for 35kV main transformer room as claimed in claim 1, characterized in that, said muffler sheet comprises perforated galvanized steel plate/perforated aluminum plate, glass cloth, centrifugal Glass wool board, glass silk cloth and perforated galvanized steel plate/perforated aluminum board, the centrifugal glass wool board is provided with a light steel keel. 4.如权利要求1所述的一种用于35kV主变室的排风消声弯头,其特征在于,所述不锈钢丝网的孔间距为10mm×10mm。4 . The exhaust and muffler elbow for a 35kV main transformer room according to claim 1 , wherein the hole spacing of the stainless steel wire mesh is 10mm×10mm.
CN201420574189.0U 2014-09-30 2014-09-30 A kind of air exhausting soundproofing elbow for 35kV transformer chamber Expired - Fee Related CN204164042U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108194395A (en) * 2018-02-12 2018-06-22 山西巨龙风机有限公司 A kind of axis stream booster elbow intake silencer
CN109931297A (en) * 2017-12-18 2019-06-25 厦门嘉达环保科技有限公司 Metope exhaust fan composite muffler
CN111207114A (en) * 2020-03-13 2020-05-29 空气动力学国家重点实验室 Exhaust expander structure for reducing pneumatic noise of fan
CN111928689A (en) * 2020-07-23 2020-11-13 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) Printed circuit board type heat exchanger with noise elimination function

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109931297A (en) * 2017-12-18 2019-06-25 厦门嘉达环保科技有限公司 Metope exhaust fan composite muffler
CN109931297B (en) * 2017-12-18 2024-06-04 厦门嘉达环保科技有限公司 Wall exhaust fan composite muffler
CN108194395A (en) * 2018-02-12 2018-06-22 山西巨龙风机有限公司 A kind of axis stream booster elbow intake silencer
CN111207114A (en) * 2020-03-13 2020-05-29 空气动力学国家重点实验室 Exhaust expander structure for reducing pneumatic noise of fan
CN111928689A (en) * 2020-07-23 2020-11-13 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) Printed circuit board type heat exchanger with noise elimination function
CN111928689B (en) * 2020-07-23 2021-12-03 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) Printed circuit board type heat exchanger with noise elimination function

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