WO2023185892A1 - 一种降低电场畸变的声屏障系统及声环境改善方法 - Google Patents

一种降低电场畸变的声屏障系统及声环境改善方法 Download PDF

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Publication number
WO2023185892A1
WO2023185892A1 PCT/CN2023/084543 CN2023084543W WO2023185892A1 WO 2023185892 A1 WO2023185892 A1 WO 2023185892A1 CN 2023084543 W CN2023084543 W CN 2023084543W WO 2023185892 A1 WO2023185892 A1 WO 2023185892A1
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WIPO (PCT)
Prior art keywords
sound
sound barrier
arc
electric field
shaped
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PCT/CN2023/084543
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English (en)
French (fr)
Inventor
王东晖
张嵩阳
张家琪
姚德贵
王磊磊
张壮壮
王广周
聂京凯
何强
田一
李睿
卢林
郭星
李媛
田旭
刘卫坡
冯浩东
Original Assignee
国网河南省电力公司电力科学研究院
国网智能电网研究院有限公司
国家电网有限公司
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Publication of WO2023185892A1 publication Critical patent/WO2023185892A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
    • E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
    • E04H5/04—Transformer houses; Substations or switchgear houses

Definitions

  • the invention belongs to the technical field of sound insulation and noise reduction of electric power facilities, and specifically relates to a sound barrier system that reduces electric field distortion and a sound environment improvement method.
  • the main source of noise in a substation is the transformer.
  • the frequency range of transformer noise is mainly concentrated in the middle and low frequency bands. Therefore, a sound barrier system is often used to absorb and block the noise.
  • the current substation sound barrier system generally improves the sound environment by installing a steel plate sound barrier on the top of the substation wall.
  • This sound barrier can improve the sound environment to a certain extent, but it does not consider the sound barrier electric field.
  • the traditional method of adding sound barriers to ordinary walls cannot meet the wind load resistance requirements after the sound barrier is installed.
  • the purpose of the present invention is to provide a sound barrier system and a sound environment improvement method that reduce electric field distortion.
  • a sound barrier system that reduces electric field distortion, which includes: a wall unit and a sound barrier unit, said The upper side of the sound barrier unit is an arc-shaped sound barrier plate that can reduce electric field distortion, improve the quality of the sound environment, and resist wind loads.
  • the center of its arc points toward the inside of the power facility.
  • the lower end side of the arc-shaped sound barrier plate is in contact with the absorber.
  • the upper end of the sound layer is attached sideways; the sound barrier unit is set on the top of the wall unit, wherein the arc-shaped sound barrier plate is set on the top of the wall unit, and the sound absorption layer is set on the inside of the wall unit, and makes the sound absorption layer
  • the sound layer is flush with the inside of the wall unit; the sound barrier also includes security equipment and online monitoring equipment, which are arranged on a side of the wall unit away from the outside of the power facility.
  • the lower end of the arc-shaped sound barrier plate is a vertical plate, and the upper end is an arc-shaped plate.
  • an inclined upper plate is connected between the vertical plate and the arc-shaped plate, and the arc-shaped plate is tangent to the inclined upper plate.
  • the other end of the arc-shaped plate is an arc-shaped wrapper. side.
  • the radius of curvature of the arc-shaped plate is 0.084H ⁇ 0.094H, where H is the height of the wall unit on the ground.
  • the arc center angle of the arc-shaped plate structure is 100°-140°.
  • the vertical plate shape of the arc-shaped sound barrier panel is bonded to the sound absorption layer.
  • the arc-shaped sound barrier plate is arranged on the top of the wall unit, and a sound insulation material is used to seal the space between the arc-shaped sound barrier plate and the wall unit and an anti-corrosion layer is provided.
  • the lower end of the arc-shaped sound barrier panel is also provided with a sound-absorbing layer slot that can fit between the wall units and has an integral structure with the arc-shaped sound barrier panel.
  • the bottom end of the sound barrier board and the sound-absorbing layer slot are connected to the top and side surfaces of the wall unit through bolts.
  • the sound-absorbing layer is arranged at the sound-absorbing layer slot.
  • the sound-absorbing layer closely fits the lower end side of the arc-shaped sound barrier plate and the sound-absorbing layer slot.
  • the sound-absorbing layer is wrapped with a metal mesh.
  • a metal down conductor is provided at the lower end of the sound barrier unit.
  • the upper end of the metal down conductor is connected to the metal mesh of the sound-absorbing layer, and the metal mesh is connected to the arc-shaped sound barrier plate.
  • the lower end of the metal down conductor is connected to the power facility ground grid.
  • the lower end of the wall unit is buried underground in a "convex" structure.
  • a reserved channel is provided at the lower end of the wall unit buried underground.
  • the online monitoring device includes a display screen and a folding sound level meter.
  • the folding sound level meter is connected to a display screen, and the collected data is transmitted to the display screen for display.
  • the online monitoring equipment and security equipment are connected to energy supply pipelines, and are powered by the energy supply pipelines.
  • the security equipment and energy supply pipelines are arranged on the top of the wall unit.
  • An acoustic environment improvement method includes the following steps:
  • Step 1 Use a sound level meter to collect sound environment information around power facilities, and transmit the collected sound environment information to the control system to determine the construction points for building sound barriers;
  • Step 2 Construct a sound barrier at the construction site that can reduce electric field distortion, improve acoustic environment quality, and resist wind load as mentioned above, so that the external acoustic environment at the site meets the predetermined range;
  • Step 3 Collect the sound environment information outside the sound barrier through a folding sound level meter to monitor the sound environment quality at that point.
  • step 1 when the noise measured at the point exceeds the limit requirement of the acoustic environment functional zone of the area where the power facility is located, a sound barrier is constructed at the point.
  • step 2 the electric field amplitude at the top of the sound barrier is reduced to 80% of the electric field amplitude at the top of the traditional sound barrier.
  • the acoustic environment quality meets the limit requirements of the acoustic environment functional zone in the area where the power facility is located.
  • the wind load resistance capability is at least resistance to level 9 wind.
  • the sound barrier system of the present invention that reduces electric field distortion is easy to manufacture, economical and practical. It can not only improve the sound environment around the substation, but also reduce the electric field amplitude at the top of the sound barrier system to that of the electric field amplitude at the top of the traditional sound barrier system. 80%.
  • the sound barrier unit is designed with a sound barrier panel with a curved part, and the bottom of the wall buried underground adopts a "convex" structure, which can greatly improve the wind load resistance of this system, so the wind load resistance is Resistant to at least level 9 wind; and this system provides energy supply facilities to the acoustic environment online monitoring equipment, which can effectively improve the working stability of the online monitoring equipment.
  • Figure 1 is a side view and a front view of a sound barrier system for reducing electric field distortion according to the present invention
  • Figure 2 is a schematic structural diagram of a wall unit of a sound barrier system that reduces electric field distortion according to the present invention
  • Figure 3 is a schematic structural diagram of a sound barrier unit of a sound barrier system that reduces electric field distortion according to the present invention
  • Figure 4 is a schematic structural diagram of an arc-shaped sound barrier plate of a sound barrier system that reduces electric field distortion according to the present invention
  • Figures 5a and 5b are respectively the modeling of the electric field intensity of a sound barrier system of the present invention that reduces electric field distortion and the electric field intensity of a traditional sound barrier system;
  • Figure 1 is a side view and a front view of a sound barrier system for reducing electric field distortion according to the present invention.
  • the sound barrier system for reducing electric field distortion according to the present invention mainly includes a wall unit 1 and a sound barrier unit. 2.
  • the upper end of the sound barrier unit 2 is an arc-shaped sound barrier plate 201 that can reduce electric field distortion, improve the quality of the acoustic environment, and resist wind loads.
  • the center of its arc points toward the inside of the power facility.
  • the arc-shaped sound barrier plate 201 The lower end side of the sound absorbing layer 202 is in contact with the upper end side of the sound absorbing layer 202 .
  • the design of the arc-shaped sound barrier plate made of top metal material can significantly reduce the distortion of the electric field generated by the top structure of the sound barrier on the overhead lines on the basis of increasing the effective height of the sound barrier, thereby reducing the discharge risk of the overhead lines on the sound barrier.
  • the sound barrier unit 2 is disposed on the top of the wall unit 1, wherein the arc-shaped sound barrier plate 201 is disposed on the top of the wall unit 1, and the sound absorbing layer 202 is disposed on the inner side of the wall unit 1, so that the sound absorbing layer 202 and The inside of wall unit 1 is flush.
  • the sound barrier also includes security equipment 3 and online monitoring equipment.
  • the security equipment 3 and online monitoring equipment are arranged on the side of the wall unit 1 away from the outside of the power facility.
  • the lower end of the arc-shaped sound barrier plate 201 is a vertical plate, and the upper end is an arc-shaped plate.
  • the vertical plate-shaped structure and the arc-shaped plate structure are connected with an inclined upper plate, and the arc-shaped plate is tangent to the inclined upper plate.
  • the other end of the arc-shaped plate is an arc-shaped edge.
  • the radius of curvature of the arc-shaped plate is 0.084H ⁇ 0.094H, where H is the height of wall unit 1 on the ground, and the arc center angle of the arc-shaped plate is 100° ⁇ 140°.
  • the vertical plates of the arc-shaped sound barrier plate 201 are bonded to the sound absorbing layer 202 .
  • the arc-shaped sound barrier plate 201 is arranged on the top of the wall unit 1.
  • the space between the arc-shaped sound barrier plate 201 and the wall unit 1 is sealed with sound insulation material and an anti-corrosion layer is provided.
  • the lower end of the arc-shaped sound barrier panel 201 is also provided with a sound-absorbing layer slot that can fit between the wall units 1 and is integrally structured with the arc-shaped sound barrier panel 201.
  • the bottom end and the sound-absorbing layer slot are connected to the top and inner sides of the wall unit 1 respectively through bolts.
  • the sound-absorbing layer 202 is arranged at the sound-absorbing layer slot, and the sound-absorbing layer 202 is connected to the lower end side of the arc-shaped sound barrier plate 201 , sound-absorbing layer card slots are tightly fitted. Multiple bolt structures can ensure the wind load resistance requirements of this sound barrier system.
  • the sound-absorbing layer slot and corresponding sealing structure are designed to ensure that the sound-absorbing layer 202 is in contact with the arc-shaped sound absorbing layer.
  • the fixed connection of the barrier plate 201 is sealed with the gap.
  • the sound absorbing layer 202 is wrapped with a metal mesh.
  • the lower end of the sound barrier unit 2 is provided with a metal down conductor 203.
  • the upper end of the metal down conductor 203 is connected to the metal mesh of the sound absorption layer 202, and the metal mesh is connected to the arc-shaped sound barrier plate 201.
  • the metal down conductor The lower end of 203 is connected to the power facility ground network.
  • the sound barrier unit 2 projects to the ground a patrol path inside the factory boundary, which can provide a rain-shielding route for operation and maintenance personnel to patrol within the station.
  • the lower side of the wall unit 1 is buried in the ground and is a "convex" structure for resisting wind loads.
  • a reserved channel 101 is provided at the lower end of the wall unit 1 which is buried underground, for reserved channels for cable trenches, water supply and drainage facilities, etc.
  • the online monitoring equipment includes a display screen 5 and a folding sound level meter 6 .
  • the folding sound level meter 6 is connected to the display screen 5 and is configured to transmit the collected data to the display screen 5 for display.
  • Both the online monitoring equipment and the security equipment 3 are connected to the energy supply pipeline 4 and are powered by the energy supply pipeline 4 .
  • the security equipment 3 and the energy supply pipeline 4 are both arranged on the top of the wall unit 1 .
  • An acoustic environment improvement method includes the following steps:
  • Step 1 Use a sound level meter to collect sound environment information around power facilities, and transmit the collected sound environment information to the control system to determine the construction points for building sound barriers;
  • Step 2 Construct a sound barrier at the construction site that can reduce electric field distortion, improve acoustic environment quality, and resist wind load as mentioned above, so that the external acoustic environment at the site meets the predetermined range;
  • Step 3 Collect the sound environment information outside the sound barrier through the folding sound level meter 6 to monitor the sound environment quality at this point.
  • step 1 when the noise measured at the point exceeds the limit requirements of the acoustic environment functional zone in the area where the power facility is located, a sound barrier is constructed at the point.
  • step 3 the electric field amplitude at the top of the sound barrier is reduced to 80% of the electric field amplitude at the top of the traditional type of sound barrier.
  • step 3 the acoustic environment quality meets the limit requirements of the acoustic environment functional zone in the area where the power facility is located; the wind load resistance capability is to resist at least level 9 wind.
  • the acoustic environment quality needs to meet the "GB/12348-2008 Industrial Enterprise Boundary Environmental Noise Emission Standard".
  • the sound barrier system of the present invention that reduces electric field distortion is easy to manufacture, economical and practical. It can not only improve the sound environment around the substation, but also reduce the electric field amplitude at the top of the sound barrier to 80% of the electric field amplitude at the top of the traditional sound barrier. , so that the sound environment quality meets the limit requirements of the sound environment functional zone in the area where the power facilities are located.
  • the sound barrier unit is designed with a sound barrier plate with an arc part, and the bottom of the wall buried underground adopts a "convex" structure, which can The wind load resistance of this system is greatly improved, so that the wind load resistance is at least level 9 wind resistance; and this system provides energy supply facilities to the acoustic environment online monitoring equipment, which can effectively improve the working stability of the online monitoring equipment.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
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  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)

Abstract

一种降低电场畸变的声屏障系统包括：墙体单元以及声屏障单元，声屏障单元的上侧部为弧形声屏障板，其弧形的圆心指向电力设施内部，弧形声屏障板的下侧部侧面与吸声层的上侧部侧面贴合；声屏障单元设置在墙体单元的顶部，其中弧形声屏障板设置在墙体单元的顶端，吸声层设置在墙体单元内侧的侧面上，并使得吸声层与墙体单元内侧平齐；声屏障还包括功能管线、安防设备以及在线监测设备。本发明的声屏障系统便于制造，其不仅能够改善变电站周围的声环境，还能将声屏障系统顶部的电场幅值降低至传统类型声屏障系统顶部电场幅值的80％，而且，声屏障单元包含具有弧形部分的声屏障板设计，增强本系统的抗风荷能力，另外，向声环境在线监测设备提供了供能设施，提高在线监测设备的工作稳定性。

Description

一种降低电场畸变的声屏障系统及声环境改善方法 技术领域
本发明属于电力设施的隔声降噪技术领域，具体涉及一种降低电场畸变的声屏障系统及声环境改善方法。
背景技术
伴随着经济发展，城镇规模的不断扩张，电力工程建设也在迅猛发展，输变电设施的增建是应对电力需求攀升的必要措施，变电站也已成为电力输送的核心枢纽。一方面需要在城市中心负荷密集区域新增变电站以增加备用容量、加强电网架构；而另一方面，城市边缘逐步向郊区延展的过程中，原本位于市郊的变电站逐步被新增的城市功能区块所包围，两方面共同作用的结果使得很多变电站距离居民生活区、学校、医院等环境敏感区更近，即变电站本应具有的噪声自然衰减空间无法得到保证或被挤占，导致变电站噪声问题日益显现。
变电站的主要噪声源为变压器，变压器噪声的频率范围主要集中在中低频段，因此常采用声屏障系统对噪声进行吸收阻隔。
目前的变电站声屏障系统一般采用在变电站的墙体顶部加装钢板声屏障的方式来对声环境进行改善，这种声屏障能够对声环境有一定程度的改善，但是其并未考虑声屏障电场畸变的问题，同时，由于加装钢板声屏障之后墙体变高，需要承载更大的风荷，传统的普通墙体加声屏障的方式难以满足加装声屏障后的抗风荷要求。
发明内容
为解决现有技术中存在的不足，本发明的目的在于，提供一种降低电场畸变的声屏障系统及声环境改善方法。
本发明采用如下的技术方案：
一种降低电场畸变的声屏障系统，其包括：墙体单元以及声屏障单元，所述 声屏障单元的上侧部为能够降低电场畸变、改善声环境质量以及抗风荷的弧形声屏障板，其弧形的圆心指向电力设施内部，所述弧形声屏障板的下端侧面与吸声层的上端侧面贴合；所述声屏障单元设置在墙体单元的顶部，其中弧形声屏障板设置在墙体单元的顶部上，吸声层设置在墙体单元内侧上，并使得吸声层与墙体单元内侧平齐；所述声屏障还包括安防设备以及在线监测设备，所述安防设备以及在线监测设备设置在所述墙体单元的远离电力设施外部的一侧。
作为本发明的一种优选实施例方式，所述弧形声屏障板的下端为竖直板，上端为弧形板。
作为本发明的一种优选实施例方式，所述竖直板与弧形板之间连接斜上板，且弧形板与斜上板相切，所述弧形板的另一端为弧形包边。
作为本发明的一种优选实施例方式，所述弧形板的曲率半径为0.084H～0.094H，其中H为墙体单元地面上的高度。
作为本发明的一种优选实施例方式，所述弧形板状结构的弧心角为100°～140°。
作为本发明的一种优选实施例方式，所述弧形声屏障板的竖直板状与吸声层贴合。
作为本发明的一种优选实施例方式，所述弧形声屏障板设置在墙体单元的顶部，所述弧形声屏障板与墙体单元之间使用隔声材料封堵并设置防腐层。
作为本发明的一种优选实施例方式，所述弧形声屏障板下端还设置有能够与墙体单元之间贴合且与弧形声屏障板一体结构的吸声层卡槽，所述弧形声屏障板的底端以及吸声层卡槽通过螺栓分别连接到墙体单元的顶面和侧面。
作为本发明的一种优选实施例方式，所述吸声层设置在吸声层卡槽处。
作为本发明的一种优选实施例方式，所述吸声层与弧形声屏障板的下端侧面、吸声层卡槽均紧密贴合。
作为本发明的一种优选实施例方式，所述吸声层上包裹有金属丝网。
作为本发明的一种优选实施例方式，所述声屏障单元的下端设置有金属引下线。
作为本发明的一种优选实施例方式，所述金属引下线的上端连接到吸声层的金属丝网，且金属丝网与弧形声屏障板相连接。
作为本发明的一种优选实施例方式，所述金属引下线的下端接通电力设施地网。
作为本发明的一种优选实施例方式，所述墙体单元的下端以“凸”型结构埋入地下。
作为本发明的一种优选实施例方式，所述墙体单元的地上部分高度H、地下部分深度S、“凸”型结构的高度s以及“凸”型结构的宽度d满足H:S:s:d＝10:5:1:3。
作为本发明的一种优选实施例方式，所述墙体单元的埋入地下的下端分设置有预留通道。
作为本发明的一种优选实施例方式，所述在线监测设备包括显示屏以及折叠声级计。
作为本发明的一种优选实施例方式，所述折叠声级计与显示屏相连接，并且将采集到的数据输送到显示屏上显示。
作为本发明的一种优选实施例方式，所述在线监测设备以及安防设备均与供能管线连接，且由供能管线为其供能。
作为本发明的一种优选实施例方式，所述安防设备以及供能管线均设置在墙体单元的顶部上。
一种声环境改善方法，所述改善方法包括以下步骤：
步骤1，使用声级计在电力设施周围采集声环境信息，并将汇总到的声环境信息传输给控制系统，判断建设声屏障的建设点位；
步骤2，在建设点位建设如上所述的能够降低电场畸变、改善声环境质量以及抗风荷的声屏障，使得该点位的外部声环境符合预定范围；
步骤3，通过折叠声级计采集声屏障外侧的声环境信息，监控该点位的声环境质量。
作为本发明的一种优选实施例方式，所述步骤1中，当该点位测得的噪声超出电力设施所在区域声环境功能区限值要求时，则在该点位建设声屏障。
作为本发明的一种优选实施例方式，所述步骤2中，声屏障顶部电场幅值降低至传统类型声屏障顶部电场幅值的80％。
作为本发明的一种优选实施例方式，声环境质量满足电力设施所在区域声环境功能区的限值要求。
作为本发明的一种优选实施例方式，抗风荷能力为至少抵抗9级风。
本发明的有益效果在于，与现有技术相比：
本发明的一种降低电场畸变的声屏障系统便于制造，经济实用，其不仅能够改善变电站周围的声环境，还能将声屏障系统顶部电场幅值降低至传统类型声屏障系统顶部电场幅值的80％，另外，声屏障单元采用具有弧形部分的声屏障板设计，墙体埋入地下的底部采用“凸”型结构，能够大幅提高本系统的抗风荷能力，从而抗风荷能力为至少抵抗9级风；并且本系统向声环境在线监测设备提供了供能设施，能够有效提高在线监测设备的工作稳定性。
附图说明
图1是本发明的一种降低电场畸变的声屏障系统的侧视图与主视图；
图2是本发明的一种降低电场畸变的声屏障系统的墙体单元的结构示意图；
图3是本发明的一种降低电场畸变的声屏障系统的声屏障单元的结构示意图；
图4是本发明的一种降低电场畸变的声屏障系统的弧形声屏障板的结构示意图；
图5a和5b分别是本发明的一种降低电场畸变的声屏障系统的电场强度与传统声屏障系统的电场强度的建模；
图中：
1-墙体单元；
101-预留通道；
2-声屏障单元；
201-弧形声屏障板；
202-吸声层；
203-金属引下线；
3-安防设备；
4-供能管线；
5-显示屏；
6-折叠声级计。
具体实施方式
下面结合附图对本申请作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本申请的保护范围。
图1是本发明的一种降低电场畸变的声屏障系统的侧视图与主视图，如图1所示，本发明的一种降低电场畸变的声屏障系统主要包括墙体单元1以及声屏障单元2。
如图3所示，声屏障单元2的上端为能够降低电场畸变、改善声环境质量以及抗风荷的弧形声屏障板201，其弧形的圆心指向电力设施内部，弧形声屏障板201的下端侧面与吸声层202的上端侧面贴合。顶部金属材质的弧形声屏障板设计，可在提升声屏障有效高度的基础上，显著降低声屏障顶部结构对架空线路产生电场的畸变作用，继而降低架空线路对声屏障的放电风险。
声屏障单元2设置在墙体单元1的顶部，其中弧形声屏障板201设置在墙体单元1的顶部上，吸声层202设置在墙体单元1内侧上，并使得吸声层202与墙体单元1内侧平齐。
声屏障还包括安防设备3以及在线监测设备，所述安防设备3以及在线监测设备设置在墙体单元1的远离电力设施外部的一侧。
弧形声屏障板201的下端为竖直板，上端为弧形板。
竖直板状结构与弧形板状结构之间连接斜上板，且弧形板与斜上板相切，所述弧形板的另一端为弧形包边。
弧形板的曲率半径为0.084H～0.094H，其中H为墙体单元1地面上的高度，弧形板的弧心角为100°～140°。
弧形声屏障板201的竖直板与吸声层202贴合。
弧形声屏障板201设置在墙体单元1的顶部，所述弧形声屏障板201与墙体单元1之间使用隔声材料封堵并设置防腐层。参考图4，弧形声屏障板201下端还设置有能够与墙体单元1之间贴合且与弧形声屏障板201一体结构的吸声层卡槽，所述弧形声屏障板201的底端以及吸声层卡槽通过螺栓分别连接到墙体单元1的顶面和内侧，吸声层202设置在吸声层卡槽处，吸声层202与弧形声屏障板201的下端侧面、吸声层卡槽均紧密贴合。多个螺栓结构能够确保本声屏障系统的抗风荷要求。设计有吸声层卡槽及相应的密封结构，保证吸声层202与弧形声 屏障板201的固定连接与缝隙密闭。
吸声层202上包裹有金属丝网。
声屏障单元2的下端设置有金属引下线203，金属引下线203的上端连接到吸声层202的金属丝网，且金属丝网与弧形声屏障板201相连接，金属引下线203的下端接通电力设施地网。
声屏障单元2对地投影成厂界内侧的巡视路径，可为运维人员站内巡视提供遮雨路线。
参考图2，墙体单元1的下侧部埋入地下部分为用于抗风荷的“凸”型结构。墙体单元1的露出地面部分的高度H、埋入地下的下端的深度S、“凸”型结构的高度s以及“凸”型结构的宽度d满足H:S:s:d＝10:5:1:3。
墙体单元1的部埋入地下的下端设置有预留通道101，用于为电缆沟道、给排水设施等预留通道。
在线监测设备包括显示屏5以及折叠声级计6，折叠声级计6与显示屏5相连接，并且被配置为将采集到的数据输送到显示屏5上显示。
在线监测设备以及安防设备3均与供能管线4连接，且由供能管线4供能。安防设备3以及供能管线4均设置在墙体单元1的顶部上。
一种声环境改善方法，所述改善方法包括以下步骤：
步骤1，使用声级计在电力设施周围采集声环境信息，并将汇总到的声环境信息传输给控制系统，判断建设声屏障的建设点位；
步骤2，在建设点位建设如上所述的能够降低电场畸变、改善声环境质量以及抗风荷的声屏障，使得该点位的外部声环境符合预定范围；
步骤3，通过折叠声级计6采集声屏障外侧的声环境信息，监控该点位的声环境质量。
步骤1中，当该点位测得的噪声超出电力设施所在区域声环境功能区限值要求时，则在该点位建设声屏障。
如图5a和5b所示，步骤3中，声屏障顶部电场幅值降低至传统类型声屏障顶部电场幅值的80％。
步骤3中，声环境质量满足电力设施所在区域声环境功能区的限值要求；抗风荷能力为至少抵抗9级风。
声环境质量需要满足《GB/12348-2008工业企业厂界环境噪声排放标准》。
本发明的有益效果在于，与现有技术相比：
本发明的一种降低电场畸变的声屏障系统便于制造，经济实用，其不仅能够改善变电站周围的声环境，还能将声屏障顶部电场幅值降低至传统类型声屏障顶部电场幅值的80％，使得声环境质量满足电力设施所在区域声环境功能区的限值要求，而且，声屏障单元采用具有弧形部分的声屏障板设计，墙体埋入地下的底部采用“凸”型结构，能够大幅提高本系统的抗风荷能力，从而抗风荷能力为至少抵抗9级风；并且本系统向声环境在线监测设备提供了供能设施，能够有效提高在线监测设备的工作稳定性。
本发明申请人结合说明书附图对本发明的实施示例做了详细的说明与描述，但是本领域技术人员应该理解，以上实施示例仅为本发明的优选实施方案，详尽的说明只是为了帮助读者更好地理解本发明精神，而并非对本发明保护范围的限制，相反，任何基于本发明的发明精神所作的任何改进或修饰都应当落在本发明的保护范围之内。

Claims (16)

  1. 一种降低电场畸变的声屏障系统，其包括：墙体单元(1)以及声屏障单元(2)，其特征在于：
    所述声屏障单元(2)的上端为能够降低电场畸变、改善声环境质量以及抗风荷的弧形声屏障板(201)，其弧形的圆心指向电力设施内部，所述弧形声屏障板(201)的下端侧面与吸声层(202)的上端侧面贴合；
    所述声屏障单元(2)设置在墙体单元(1)的顶部，其中弧形声屏障板(201)设置在墙体单元(1)的顶部上，吸声层(202)设置在墙体单元(1)内侧上，并使得吸声层(202)与墙体单元(1)内侧平齐；
    所述声屏障还包括安防设备(3)以及在线监测设备，所述安防设备(3)以及在线监测设备设置在所述墙体单元(1)的远离电力设施外部的一侧。
  2. 根据权利要求1所述的一种降低电场畸变的声屏障系统，其特征在于：
    所述弧形声屏障板(201)的下端为竖直板，上端为弧形板。
  3. 根据权利要求2所述的一种降低电场畸变的声屏障系统，其特征在于：
    所述竖直板状结构与弧形板状结构之间连接有斜上板，且弧形板与斜上板相切，所述弧形板的另一端为弧形包边。
  4. 根据权利要求3所述的一种降低电场畸变的声屏障系统，其特征在于：
    所述弧形板的曲率半径为0.084H～0.094H，其中H为墙体单元(1)地面上的高度；
    所述弧形板的弧心角为100°～140°。
  5. 根据权利要求2所述的一种降低电场畸变的声屏障系统，其特征在于：
    所述弧形声屏障板(201)的竖直板与吸声层(202)贴合。
  6. 根据权利要求2所述的一种降低电场畸变的声屏障系统，其特征在于：
    所述弧形声屏障板(201)设置在墙体单元(1)的顶部，所述弧形声屏障板(201)与墙体单元(1)之间使用隔声材料封堵并设置防腐层；
    所述弧形声屏障板(201)下端还设置有能够与墙体单元(1)之间贴合且与弧形声屏障板(201)一体结构的吸声层卡槽，所述弧形声屏障板(201)的底端以及吸声层卡槽通过螺栓分别连接到墙体单元(1)的顶面和内侧以及容纳吸声层(201)的平面上；
    所述吸声层(202)设置在吸声层卡槽处；
    所述吸声层(202)与弧形声屏障板(201)的下端侧面、吸声层卡槽均紧密贴合。
  7. 根据权利要求1所述的一种降低电场畸变的声屏障系统，其特征在于：
    所述吸声层(202)上包裹有金属丝网。
  8. 根据权利要求8所述的一种降低电场畸变的声屏障系统，其特征在于：
    所述声屏障单元(2)的下端设置有金属引下线(203)；
    所述金属引下线(203)的上端连接到吸声层(202)的金属丝网，且金属丝网与弧形声屏障板(201)相连接；
    所述金属引下线(203)的下端接通电力设施地网。
  9. 根据权利要求1所述的一种降低电场畸变的声屏障系统，其特征在于：
    所述墙体单元(1)的下端以“凸”型结构埋入地下；
    所述墙体单元(1)的地上部分高度H、地下部分深度S、“凸”型结构的高度s以及“凸”型结构的宽度d满足H:S:s:d＝10:5:1:3。
  10. 根据权利要求9所述的一种降低电场畸变的声屏障系统，其特征在于：
    所述墙体单元(1)的埋入地下的下端设置有预留通道(101)。
  11. 根据权利要求1所述的一种降低电场畸变的声屏障系统，其特征在于：
    所述在线监测设备包括显示屏(5)以及折叠声级计(6)；
    所述折叠声级计(6)与显示屏(5)相连接，并且将采集到的数据输送到显示屏(5)上显示。
  12. 根据权利要求11所述的一种降低电场畸变的声屏障系统，其特征在于：
    所述在线监测设备以及安防设备(3)均与供能管线(4)连接，且由供能管线(4)为其供能。
  13. 根据权利要求12所述的一种降低电场畸变的声屏障系统，其特征在于：
    所述安防设备(3)以及供能管线(4)均设置在墙体单元(1)的顶部。
  14. 一种声环境改善方法，其特征在于：
    所述改善方法包括以下步骤：
    步骤1，使用声级计在电力设施周围采集声环境信息，并将汇总到的声环境信息传输给控制系统，判断建设声屏障的建设点位；
    步骤2，在建设点位建设如上所述的能够降低电场畸变、改善声环境质量以及抗风荷的声屏障，使得该点位的外部声环境符合预定范围；
    步骤3，通过折叠声级计(6)采集声屏障外侧的声环境信息，监控该点位的声环境质量。
  15. 根据权利要求14所述的一种声环境改善方法，其特征在于：
    所述步骤1中，当该点位测得的噪声超出电力设施所在区域声环境功能区限值要求时，则在该点位建设声屏障。
  16. 根据权利要求14所述的一种声环境改善方法，其特征在于：
    所述步骤3中，声屏障顶部电场幅值降低至传统类型声屏障顶部电场幅值的80％；
    声环境质量满足电力设施所在区域声环境功能区的限值要求；
    抗风荷能力为至少抵抗9级风。
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