The present disclosure relates to the technical field of sound insulation and noise reduction of power facilities, and specifically, to a sound barrier system for reducing electric field distortion.
With the continuous expansion of economic development and urban scales, power engineering construction is also rapidly developing. A necessary measure to meet a rising power demand is to add power transmission and transformation facilities, and substations have become a core hub of power transmission. On one hand, it is necessary to add new substations in a densely loaded region of a city center to increase a backup capacity and strengthen a power grid architecture. On the other hand, as an urban fringe gradually extends towards a suburb, a substation that is originally located in the suburb is gradually surrounded by newly added urban functional blocks. The above two factors make many substations closer to environmentally sensitive regions such as a residential region, a school, and a hospital. That is, natural noise attenuation space required by the substations cannot be guaranteed or is occupied, causing an increasingly prominent noise problem to the substations.
Noise in a substation is mainly from a transformer, and a frequency of the noise of the transformer is mainly concentrated on medium and low frequency bands. Therefore, a sound barrier system is often used to absorb and block the noise.
A current sound barrier system for a substation generally improves an acoustic environment by installing a steel plate sound barrier at a top of a wall of the substation. This sound barrier can improve the acoustic environment to a certain extent, but it does not consider electric field distortion of the sound barrier. In addition, after the steel plate sound barrier is installed, the wall becomes higher and needs to bear a greater wind load. Therefore, a traditional method of adding a sound barrier to an ordinary wall is difficult to meet a wind load resistance requirement after the sound barrier is installed.
To overcome the shortcomings in the prior art, the present disclosure is intended to provide a sound barrier system for reducing electric field distortion.
The present disclosure adopts following technical solutions.
A sound barrier system for reducing electric field distortion includes a wall unit and a sound barrier unit, wherein the sound barrier unit includes a sound barrier plate, and the sound barrier unit, from top to bottom, sequentially includes an arc-shaped part, an inclined part, and a vertical part that are integrally formed, wherein a center of a circle of the arc-shaped part points towards an interior of a power facility, the inclined part is tilted away from the power facility from top to bottom and is tangent to the arc-shaped part, and a lower end surface of the vertical part is arranged on a top of the wall unit.
As a preferred embodiment of the present disclosure, an end that is of the arc-shaped part and not connected to the inclined part has an arc-shaped edge.
As a preferred embodiment of the present disclosure, a curvature radius of the arc-shaped part ranges from 0.084 H to 0.094 H, where H is a height of a part that is of the wall unit and protrudes from the ground.
As a preferred embodiment of the present disclosure, a centering angle of the arc-shaped part ranges from 100° to 140°.
As a preferred embodiment of the present disclosure, the sound barrier unit further includes a sound absorption layer, and a side face of the sound absorption layer is attached to an inner side of the vertical part and an inner side that is of the wall unit and close to the power facility.
As a preferred embodiment of the present disclosure, a lower end of the vertical part is provided with a sound absorption layer slot that is attached to the wall unit and forms an integral structure with the sound barrier plate, and the sound absorption layer is arranged in the sound absorption layer slot.
As a preferred embodiment of the present disclosure, the lower end face of the vertical part and the sound absorption layer slot are respectively connected to a top surface and an inner side of the wall unit by using a bolt.
As a preferred embodiment of the present disclosure, the sound absorption layer is tightly attached to the inner side of the vertical part and the sound absorption layer slot.
As a preferred embodiment of the present disclosure, the vertical part and the top of the wall unit are sealed with a sound insulation material, and an anti-corrosion layer is arranged between the vertical part and the top of the wall unit.
As a preferred embodiment of the present disclosure, the sound absorption layer is wrapped with a metal wire mesh, and the metal wire mesh is connected to the sound barrier plate.
As a preferred embodiment of the present disclosure, the sound barrier unit further includes a metal down lead.
As a preferred embodiment of the present disclosure, an upper end of the metal down lead is connected to the metal wire mesh of the sound absorption layer, and a lower end of the metal down lead is connected to a ground net of the power facility.
As a preferred embodiment of the present disclosure, a lower end of the wall unit is buried underground in an inverted-T structure.
As a preferred implementation of the present disclosure, a height H of a part that is of the wall unit and protrudes from the ground, a depth S of a part of the wall unit buried underground, a height s of the inverted-T structure, and a bottom width d of the inverted-T structure meet a following equation: H: S: s: d=10:5:1:3.
As a preferred embodiment of the present disclosure, the lower end that is of the wall unit and buried underground is provided with a reserved channel.
As a preferred embodiment of the present disclosure, the sound barrier system further includes a security device and an online monitoring device, and both the security device and the online monitoring device are arranged on a side of the wall unit away from the power facility.
As a preferred embodiment of the present disclosure, the online monitoring device includes a display screen and a foldable sound level meter.
As a preferred embodiment of the present disclosure, the foldable sound level meter is connected to the display screen and is configured to transmit collected data to the display screen for displaying.
As a preferred embodiment of the present disclosure, both the online monitoring device and the security device are connected to and powered by an energy supply pipeline.
As a preferred embodiment of the present disclosure, both the security device and the energy supply pipeline are arranged on the top of the wall unit.
The present disclosure has following beneficial effects compared with the prior art:
A sound barrier system for reducing electric field distortion in the present disclosure can be easily manufactured, and is economical and practical. The sound barrier system not only can improve an acoustic environment around a substation, but also can reduce an amplitude of an electric field at a top of a sound barrier to 80% of an amplitude of an electric field at a top of a traditional sound barrier. In addition, a sound barrier unit adopts a sound barrier plate designed with an arc-shaped part, and a bottom part that is of a wall and buried underground adopts an inverted-T structure, which can greatly improve a wind load resistance capability of the system to resist at least grade 9 wind. In addition, the sound barrier system provides an energy supply facility for an online monitoring device in the acoustic environment, thereby improving stability of the online monitoring device.
The present disclosure is further described below with reference to the accompanying drawings. The following embodiments are only used for describing the technical solutions of the present disclosure more clearly, and are not intended to limit the protection scope of the present disclosure.
As shown in
An end that is of the arc-shaped part 2011 and not connected to the inclined part 2012 has an arc-shaped edge.
A curvature radius of the arc-shaped part 2012 ranges from 0.084 H to 0.094 H, where H is a height of a part that is of the wall unit 1 and protrudes from the ground. A centering angle of the arc-shaped part 2012 ranges from 100° to 140°.
Referring to
Referring to
The vertical part 2013 and the top of the wall unit 1 are sealed with a sound insulation material, and an anti-corrosion layer is also arranged between the vertical part 2013 and the top of the wall unit 1.
The sound absorption layer 202 is wrapped with a metal wire mesh 2021, and the metal wire mesh 2021 is connected to the sound barrier plate 201.
The sound barrier unit 2 further includes a metal down lead 203. An upper end of the metal down lead 203 is connected to the metal wire mesh 2021 of the sound absorption layer 202, and a lower end of the metal down lead 203 is connected to a ground net of the power facility.
The sound barrier unit 2 is projected to the ground to form an inspection path on an inner side of a factory boundary, providing a rainproof route for operation and maintenance personnel to perform inspection inside a substation.
Referring to
The lower end that is of the wall unit 1 and buried underground is provided with a reserved channel 101 to reserve a channel for a cable trench, water supply and drainage facilities, and the like.
Referring to
Both the online monitoring device and the security device 3 are connected to and powered by an energy supply pipeline 4. Both the security device 3 and the energy supply pipeline 4 are arranged on the top of the wall unit 1.
A method for improving an acoustic environment is also provided, including following steps:
Step 1: Using a sound level meter to collect acoustic environment information around a power facility, summarizing and transmitting the collected acoustic environment information to a control system to determine a construction site of a sound barrier;
Step 2: Constructing the above-described sound barrier system at the construction site that can reduce electric field distortion, improve quality of an acoustic environment, and resist a wind load, such that an external acoustic environment of the construction site meets a predetermined range; and
Step 3: Collecting acoustic environment information outside the sound barrier system by using a foldable sound level meter 6, and monitoring quality of the acoustic environment of the construction site.
In the step 1, when noise measured at the construction site exceeds a limit requirement of a functional zone of an acoustic environment in a region in which the power facility is located, a sound barrier is constructed at the construction site.
As shown in
The present disclosure has following beneficial effects compared with the prior art:
A sound barrier system for reducing electric field distortion in the present disclosure can be easily manufactured, and is economical and practical. The sound barrier system not only can improve an acoustic environment around a substation, but also can reduce an amplitude of an electric field at a top of a sound barrier to 80% of an amplitude of an electric field at a top of a traditional sound barrier, such that quality of the acoustic environment meets a limit requirement of a functional zone of the acoustic environment in a region in which a power facility is located. In addition, a sound barrier unit adopts a sound barrier plate designed with an arc-shaped part, and a bottom part of a wall buried underground adopts an inverted-T structure, which can greatly improve a wind load resistance capability of the system to resist at least grade 9 wind. In addition, the sound barrier system provides an energy supply facility for an online monitoring device in the acoustic environment, thereby improving stability of the online monitoring device.
The quality of the acoustic environment meets the GB 12348-2008 Emission Standard for Industrial Enterprises Noise at Boundary.
The applicant of the present disclosure has made a detailed description of the implementation examples of the present disclosure with reference to the accompanying drawings in the specification. However, those skilled in the art should understand that the above implementation examples are only preferred implementation solutions of the present disclosure, and the detailed description is only to help readers better understand the spirit of the present disclosure, rather than to limit the protection scope of the present disclosure. On the contrary, any improvement or modification based on the spirit of the present disclosure shall fall within the protection scope of the present disclosure.
Number | Date | Country | Kind |
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202210339373.6 | Apr 2022 | CN | national |
The present application is a Continuation-In-Part Application of PCT Application No. PCT/CN2023/084543 filed on Mar. 28, 2023, which claims the benefit of Chinese Patent Application No. 202210339373.6 filed on Apr. 1, 2022. All the above are hereby incorporated by reference in their entirety.
Number | Date | Country | |
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Parent | PCT/CN2023/084543 | Mar 2023 | WO |
Child | 18603248 | US |