CN220705376U

CN220705376U - Sound insulation barrier for transformer or converter transformer, sound insulation transformer or converter transformer

Info

Publication number: CN220705376U
Application number: CN202321964593.4U
Authority: CN
Inventors: 谢紫银; 陈文杰; 宋凯; 聂峰; 胡文华; 倪超; 陈健; 张谢平; 曹丽红; 何斌; 张小庆; 苏春丽; 杨貌; 王建维; 沈伟; 何金龙; 金峰; 李建平; 王炜宇; 刘屹泽
Original assignee: China Power Engineering Consulting Group East China Electric Power Design Institute Co Ltd
Current assignee: China Power Engineering Consulting Group East China Electric Power Design Institute Co Ltd
Priority date: 2023-07-25
Filing date: 2023-07-25
Publication date: 2024-04-02
Anticipated expiration: 2033-07-25

Abstract

The application relates to the field of transformer substations and converter stations, and discloses a sound insulation barrier for a transformer or a converter transformer, a sound insulation transformer or a converter transformer, and low-frequency noise generated in the working process of the transformer or the converter transformer can be effectively reduced. The sound insulation barrier comprises a steel upright post and a plurality of photovoltaic sound absorption and insulation parts. The photovoltaic sound absorption and insulation part comprises a photovoltaic assembly, a first sound absorption panel, two fixed side plates and two fixed bottom plates. The photovoltaic module is a transparent screen body for converting light energy into electric energy, the photovoltaic module is perpendicular to the ground, two sides of a short side are connected with the fixed side plates, and two sides of a long side are connected with the fixed bottom plate. The first sound absorption panel is parallel to the photovoltaic module and is respectively connected with the fixed side plate and the fixed bottom plate, and the first sound absorption panel is a transparent microperforated plate. The photovoltaic module, the first sound absorption panel, the fixed side plate and the fixed bottom plate are enclosed into a whole, and a sound absorption resonant cavity is formed inside. The plurality of photovoltaic sound absorbing and insulating parts are stacked between the steel columns along the longitudinal direction of the steel columns to be basically flush with the upper end of the steel columns.

Description

Sound insulation barrier for transformer or converter transformer, sound insulation transformer or converter transformer

Technical Field

The application relates to the field of transformer substations and converter stations, in particular to a sound insulation barrier for a transformer or a converter transformer, and the sound insulation transformer or the converter transformer.

Background

The electric power industry in China develops rapidly, and the urban electric power load continuously rises. The number of electric power facilities such as newly built, built-out substations, converter stations and the like is continuously increasing. Research shows that the peak value of the transformer and converter transformer noise frequency mainly appears at 100Hz and harmonic frequency thereof in the range of 0-500Hz (when the frequency band noise value is more than 500Hz, the frequency band noise value has a descending trend), and the frequency band noise belongs to low-frequency noise. The low-frequency noise pollution is an environmental problem which is important to be paid attention to in power transmission and transformation engineering construction, and is also an environmental contradiction which is urgent to be solved in the national power industry construction. As an important noise reduction measure in the electric power field, the sound barrier is widely applied to scenes such as transformer substations, converter stations and the like, and is often combined with facilities such as sound insulation covers, station buildings and factory boundary walls. With the development of the photovoltaic +' mode, a part of institutions on the market are researching to combine photovoltaic and sound barriers, but the research is basically focused on the field of traffic roads, and related research and application in the power industry have not been effectively developed.

An observation window is often arranged on the sound barrier of the outdoor transformer substation, so that inspection staff can observe the running condition of power equipment in the screen conveniently. But the viewing window area is small and only the device part can be observed. Therefore, the sound barrier has good observation function while meeting the requirement of noise reduction, is convenient for the patrol personnel to comprehensively observe, master the running condition of the equipment and carry out maintenance and overhaul in time. Similarly, the sound barrier is also applicable to other electric power facility scenes such as converter stations, power plants and the like.

Aiming at the photovoltaic module, the existing implementation scheme is generally concentrated in the traffic highway field, and is designed in a targeted manner according to the highway noise characteristics and the highway field requirements, but related research and application in the power industry have not been effectively developed.

Disclosure of Invention

The utility model aims at providing a sound insulation barrier and sound insulation transformer or converter transformer for transformer or converter transformer can effectively reduce the low frequency noise that produces in transformer or the converter transformer course of working, and the sound insulation barrier possesses the power generation function, can realize standing electric energy self-sufficiency and digestion to the screen body is transparent, and the electric power inspection personnel of being convenient for observe the inboard power equipment running condition of screen.

The application discloses an acoustic barrier for a transformer or a converter transformer, comprising: the photovoltaic sound absorption and insulation components comprise a steel upright post (1) and a plurality of photovoltaic sound absorption and insulation components;

the photovoltaic sound absorption and insulation component comprises a photovoltaic assembly (21), a first sound absorption panel (22), two fixed side plates (23) and two fixed bottom plates (28), wherein the photovoltaic assembly (21) is a transparent screen body configured to convert light energy into electric energy, the photovoltaic assembly is perpendicular to the ground, two side edges of the photovoltaic assembly (21) are connected with the fixed side plates (23), and the upper end and the lower end of the photovoltaic assembly (21) are connected with the fixed bottom plates (28);

the first sound absorption panel (22) is parallel to the photovoltaic assembly (21), two side edges of the first sound absorption panel (22) are respectively connected with the fixed side plates (23), the upper end and the lower end of the first sound absorption panel (22) are connected with the fixed bottom plate (28), and the first sound absorption panel (22) is a transparent micropunching plate;

the photovoltaic module (21), the first sound absorption panel (22), the fixed side plate (23) and the fixed bottom plate (28) are enclosed into a whole, a sound absorption resonant cavity (24) is formed inside, and the plurality of photovoltaic sound absorption and insulation parts are arranged along the longitudinal direction of the steel upright (1) and are stacked between the steel upright (1) to be basically flush with the upper end of the steel upright (1).

In a preferred embodiment, the device further comprises a viewing window member;

the observation window component with photovoltaic sound absorption and insulation component structure is the same, including transparent observation panel (25), photovoltaic module (21), two fixed curb plate (23) and two fixed baseplate (28), transparent observation panel (25) perpendicular to ground and with photovoltaic module (21) are parallel, both sides limit of transparent observation panel (25) respectively with fixed curb plate (23) are connected, the upper end and the lower extreme of transparent observation panel (25) all with fixed baseplate (28) are connected.

In a preferred embodiment, the plurality of photovoltaic sound absorbing and insulating members and the photovoltaic sound absorbing and insulating member and the observation window member are sealed by a gasket.

In a preferred embodiment, the photovoltaic module further comprises a second sound absorption panel (26), the second sound absorption panel (26) is a transparent micro-perforated plate, the second sound absorption panel (26) is arranged in the sound absorption resonant cavity (24) perpendicular to the ground, a first resonant cavity is formed between the first sound absorption panel (22) and the second sound absorption panel (26), a second resonant cavity is formed between the second sound absorption panel (26) and the photovoltaic module (21), the distance between the second sound absorption panel (26) and the first sound absorption panel (22) is 120mm-130mm, and the distance between the second sound absorption panel (26) and the photovoltaic module (21) is 60mm-70mm;

a slit (27) is arranged between the bottoms of the first sound absorption panel (22) and the second sound absorption panel (26) and the fixed bottom plate (28), and the slit (27) is configured to be communicated with the sound absorption resonant cavity (24) to form a slit resonance sound absorption structure;

the frequency of the resonance sound absorption structure formed by the first sound absorption panel (22), the slit (27) and the first resonant cavity is designed at 400Hz and is used for absorbing low-frequency noise of 400Hz, and the frequency of the resonance sound absorption structure formed by the second sound absorption panel (26), the slit (27) and the second resonant cavity is designed at 200Hz and is used for absorbing low-frequency noise of 200 Hz.

In a preferred embodiment, the observation window part is arranged between two photovoltaic sound absorbing and insulating parts, the center of the observation window part is 1.5m-2.25m away from the ground, the height of the photovoltaic sound absorbing and insulating parts is 1m-1.5m, and the length of the photovoltaic sound absorbing and insulating parts is 1.5m-2m.

In a preferred embodiment, the first sound absorbing panel (22) and the second sound absorbing panel (26) are PC board, acrylic board or tempered glass;

the photovoltaic component (21) is cadmium telluride power generation glass, and the light transmittance is not lower than 40%.

In a preferred embodiment, the other photovoltaic modules (21) in the photovoltaic sound absorbing and insulating member are crystalline silicon cells, except for the observation window member.

In a preferred embodiment, the first sound absorbing panel (22) is disposed on the sound source side and the photovoltaic module (21) is disposed on the sound receiving point side.

In a preferred embodiment, the thickness of the first sound absorbing panel (22) is 0.8mm-1.5mm and the thickness of the second sound absorbing panel (26) is 2mm-3mm; the perforation rate of the first sound absorption panel (22) is 0.5-1.5%, the micropore aperture of the first sound absorption panel (22) is 0.4-0.8 mm, the perforation rate of the second sound absorption panel (26) is 5-9 per mill, and the micropore aperture of the second sound absorption panel (26) is 1-1.5 mm; the slit (27) has a slit width of 0.5mm-2mm; the micropores are obliquely perforated, and one side of the transparent microperforated panel facing the photovoltaic module is obliquely perforated downwards towards the sound source side.

In a preferred embodiment, a column foot (3) is arranged at the bottom of the steel column (1), a photovoltaic cable trunking is arranged inside the steel column (1), the section of the steel column (1) is I-shaped, a sealing top plate (4) is erected at the upper end of the sound insulation barrier, and the sealing top plate (4) is configured to seal the steel column (1) and the photovoltaic sound absorption and insulation part which is basically flush with the steel column (1).

The application also discloses a sound insulation transformer or a converter transformer, which comprises a plurality of sound insulation barriers for the transformer or the converter transformer, and the transformer or the converter transformer, wherein the sound insulation barriers are enclosed on the outer side of the transformer or the converter transformer;

the sound insulation barrier comprising the observation window component is arranged in front of a surface to be inspected of the transformer or the converter transformer.

In the embodiment of the application, the photovoltaic is combined with the traditional sound barrier in the electric power field, so that the low-frequency noise of the electric power equipment is effectively reduced, meanwhile, the electric power can be generated, the self supply of the electric power energy in the station is realized, and the development of green planning design, green construction and low-carbon operation of a transformer substation, a converter station and the like is effectively promoted;

further, the photovoltaic module is transparent, and the photovoltaic module adopts cadmium telluride power generation glass, so that the material is commonly used for building curtain walls, has good transparency, and is convenient for power inspection personnel to observe the running condition of equipment in the barrier in daily life. Meanwhile, the cadmium telluride power generation glass can absorb ultraviolet light in visible light, reduce ultraviolet light transmittance, and be beneficial to delaying decoloration and aging of power equipment in a screen;

further, the sound absorption panel of the photovoltaic sound barrier is a micro-perforated plate, and the perforation is an inclined perforation, so that precipitation entering the cavity or daily cleaning water can automatically flow out in time; meanwhile, the slit formed between the sound absorption panel and the fixed bottom plate is also convenient for precipitation or cleaning water entering the cavity to flow out in time.

Further, the sound barrier adopts a double-layer sound absorption resonance structure, and the frequencies of the resonance sound absorption structure formed by the sound absorption panel, the slit and the resonance cavity are respectively designed at 200Hz and 400Hz, so that low-frequency noise at 200Hz and 400Hz generated by a transformer or a converter transformer is efficiently absorbed.

In the present application, a number of technical features are described in the specification, and are distributed in each technical solution, which makes the specification too lengthy if all possible combinations of technical features (i.e. technical solutions) of the present application are to be listed. In order to avoid this problem, the technical features disclosed in the above summary of the present application, the technical features disclosed in the following embodiments and examples, and the technical features disclosed in the drawings may be freely combined with each other to constitute various new technical solutions (these technical solutions are all regarded as being already described in the present specification) unless such a combination of technical features is technically impossible. For example, in one example, feature a+b+c is disclosed, in another example, feature a+b+d+e is disclosed, and features C and D are equivalent technical means that perform the same function, technically only by alternative use, and may not be adopted simultaneously, feature E may be technically combined with feature C, and then the solution of a+b+c+d should not be considered as already described because of technical impossibility, and the solution of a+b+c+e should be considered as already described.

Drawings

Fig. 1 is a schematic view of a sound absorbing panel side (sound source side) exterior elevation structure according to one embodiment of the present application;

fig. 2 is a schematic view of a photovoltaic module side (sound point side) exterior elevation structure according to an embodiment of the present application;

FIG. 3 is a schematic view of a horizontal cross-sectional structure according to one embodiment of the present application;

FIG. 4 is a cut-away top view of a photovoltaic sound absorbing and insulating member according to one embodiment of the present application;

FIG. 5 is a cut-away top view of a view window component according to one embodiment of the present application;

FIG. 6 is a schematic longitudinal cross-sectional view according to one embodiment of the present application;

FIG. 7 is a schematic view of a sound barrier structure with a slot resonance sound absorbing structure according to one embodiment of the present application;

FIG. 8 is a schematic view of a sound barrier longitudinal cross-sectional structure having a double layer sound absorbing and insulating structure and a slot resonance sound absorbing structure according to one embodiment of the present application;

fig. 9 is a schematic diagram of noise absorbing effect according to one embodiment of the present application.

Reference numerals illustrate:

1-a steel upright; 21-a photovoltaic module; 22-a first sound absorbing panel; 23-fixing the side plates; 24-sound absorption resonant cavity; 25-a transparent viewing panel; 26-a second sound absorbing panel; 27-slit; 28-fixing the bottom plate; 3-column base; 4-sealing the top plate.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be understood by those skilled in the art that the claimed utility model may be practiced without these specific details and with various changes and modifications from the embodiments that follow.

Description of the terms:

as used herein, the terms "transformer" and "converter transformer" are used interchangeably.

Specific implementations of the utility model are described in detail below with reference to specific embodiments and the accompanying drawings:

a first embodiment of the present application relates to a sound barrier for a transformer or a converter transformer, as shown in fig. 1 and 2, comprising: a steel upright 1 and a plurality of photovoltaic sound absorption and insulation parts;

the photovoltaic sound absorption and insulation component comprises a photovoltaic module 21, a first sound absorption panel 22, two fixed side plates 23 and two fixed bottom plates 28, wherein the photovoltaic module 21 is a transparent screen body configured to convert light energy into electric energy, the photovoltaic module is vertical to the ground, two sides of a short side of the photovoltaic module 21 are connected with the fixed side plates 23, and two sides of a long side of the photovoltaic module 21 (namely the upper end and the lower end of the photovoltaic module 21) are connected with the fixed bottom plates 28;

the first sound absorption panel 22 is parallel to the photovoltaic module 21, two side edges of the first sound absorption panel 22 are respectively connected with the fixed side plates 23, the upper end and the lower end of the first sound absorption panel 22 are connected with the fixed bottom plate 28, and the first sound absorption panel 22 is a transparent micro-perforated plate;

as shown in fig. 3, the photovoltaic module 21, the first sound absorption panel 22, the fixed side plate 23 and the fixed bottom plate 28 are enclosed as a whole, and a sound absorption resonant cavity 24 is formed inside. A plurality of photovoltaic sound absorbing and insulating members are stacked between the steel columns 1 along the longitudinal direction of the steel columns 1 to be substantially flush with the upper end of the steel columns 1.

In an alternative embodiment, a viewing window component may be further included, where the viewing window component is structurally identical to the photovoltaic sound absorbing and insulating component and includes a transparent viewing panel 25, a photovoltaic module 21, two fixed side plates 23, and two fixed bottom plates 28. The transparent observation panel 25 is perpendicular to the ground and parallel to the photovoltaic module 21, two side edges of the transparent observation panel 25 are respectively connected with the fixed side plates 23, and the upper end and the lower end of the transparent observation panel (25) are connected with the fixed bottom plate 28. A cut-away top view of the viewing window assembly is shown in fig. 5.

In an alternative embodiment, the seals between the plurality of photovoltaic sound absorbing and insulating members and between the photovoltaic sound absorbing and insulating member and the viewing window member are provided by gaskets.

In an alternative embodiment, the solar energy collector further comprises a second sound absorption panel 26, the second sound absorption panel 26 is a transparent micro-perforated plate, the second sound absorption panel 26 is arranged in the sound absorption resonant cavity 24 perpendicular to the ground, a first resonant cavity is formed between the first sound absorption panel 22 and the second sound absorption panel 26, a second resonant cavity is formed between the second sound absorption panel 26 and the photovoltaic module 21, the distance between the second sound absorption panel 26 and the first sound absorption panel 22 is 120mm-130mm, preferably 125mm, and the distance between the second sound absorption panel 26 and the photovoltaic module 21 is 60mm-70mm, preferably 65mm. A slit 27 is provided between the bottoms of the first and second sound absorbing panels 22, 26 and the gasket, the slit 27 being configured to communicate with the sound absorbing resonant cavity 24 to form a slit resonant sound absorbing structure.

Preferably, the frequency of the resonant sound absorbing structure formed by the first sound absorbing panel 22, the slit 27 and the first resonant cavity is designed at 400Hz for absorbing low frequency noise of 400Hz, and the frequency of the resonant sound absorbing structure formed by the second sound absorbing panel 26, the slit 27 and the second resonant cavity is designed at 200Hz for absorbing low frequency noise of 200Hz, so that the combined structure of the first sound absorbing panel 22, the second sound absorbing panel 26, the slit 27, the first resonant cavity and the second resonant cavity can efficiently absorb low frequency noise at 200Hz and 400Hz generated by a transformer or a converter transformer.

In an alternative embodiment, the viewing window member is disposed between two photovoltaic sound absorbing and insulating members, the center of the viewing window member is 1.5m-2.25m from the ground, the photovoltaic sound absorbing and insulating members are 1m-1.5m in height and 1.5m-2m in length.

In an alternative embodiment, the first sound absorbing panel 22 and the second sound absorbing panel 26 are PC board, acrylic board or tempered glass, and the photovoltaic module 21 is cadmium telluride power generation glass, and the light transmittance is not less than 40%. Alternatively, when the photovoltaic sound absorbing and insulating member does not need to satisfy the transparency condition, the other photovoltaic modules 21 may be crystalline silicon batteries in addition to the observation window member.

In an alternative embodiment, the first sound absorbing panel 22 is positioned on the sound source side and the photovoltaic module 21 is positioned on the sound receiving point side.

In an alternative embodiment, the thickness of the first sound absorbing panel 22 is 0.8mm to 1.5mm, preferably 1.2mm, and the thickness of the second sound absorbing panel 26 is 2mm to 3mm, preferably 2.5mm. The perforation ratio of the first sound absorbing panel 22 is 0.5% -1.5%, preferably 1%, and the micropore diameter of the first sound absorbing panel 22 is 0.4mm-0.8mm, preferably 0.6mm. The penetration rate of the second sound-absorbing panel 26 is 5 to 9%, preferably 7%, and the micropore diameter of the second sound-absorbing panel 26 is 1 to 1.5mm, preferably 1.3mm. The micropores are obliquely perforated, and the transparent microperforated plate is obliquely perforated downwards from one side facing the photovoltaic module to the sound source side.

In an alternative embodiment, the bottom of the steel upright 1 is provided with a column foot 3, the inside of the steel upright 1 is provided with a photovoltaic cable trough, the section of the steel upright 1 is I-shaped, the upper end of the sound insulation barrier is provided with a sealing top plate 4, and the sealing top plate 4 is configured to seal the steel upright 1 and the photovoltaic sound absorption and insulation part which is basically flush with the steel upright 1.

In an alternative embodiment, the plurality of sound insulation barriers may be connected in a left-right plugging manner, for example, the photovoltaic sound absorption and insulation parts and/or the observation window assembly of the plurality of horizontal sound insulation barriers may use a steel upright post as a connecting piece, and the photovoltaic sound absorption and insulation parts and/or the observation window assembly of the plurality of horizontal sound insulation barriers may be horizontally inserted into the steel upright post through an engineering groove of the steel upright post, so as to achieve the effect of enclosing the transformer or the converter transformer in the plurality of sound insulation barriers in a sealing manner.

A second embodiment of the present application relates to a sound insulating transformer or converter transformer, characterized by comprising a sound insulating barrier for a transformer or converter transformer as described in the first embodiment of the present application, and a transformer or converter transformer. The sound insulation screen is enclosed on the outer side of the transformer or the converter transformer, and the sound insulation screen body comprising the observation window component is arranged in front of the surface of the transformer to be inspected.

In an alternative embodiment, the sound barrier surrounding the transformer or converter transformer may be provided with an access door, which may coincide with the parts of the sound barrier, one side of the access door may be connected to the side sound barrier by a hinge or may be connected to the side sound barrier by other means, such as a hinge connection or the like.

In order to better understand the technical solutions of the present application, the following description is given with reference to several specific examples, in which details are listed mainly for the sake of understanding, and are not meant to limit the scope of protection of the present application.

Example 1

As shown in fig. 1 and 2, fig. 1 is a schematic view of the sound source side outer elevation structure of the first sound absorption panel 22 of the sound barrier, and fig. 2 is a schematic view of the sound receiving point side outer elevation structure of the photovoltaic module 21. The sound insulation barrier comprises two steel upright posts 1, a plurality of stacked photovoltaic sound absorption and insulation parts are arranged between the two steel upright posts 1, the photovoltaic sound absorption and insulation parts are of an integrated structure formed by enclosing a photovoltaic module 21, a first sound absorption panel 22, two fixed side plates 23 and two fixed bottom plates 28, wherein the photovoltaic module 21 and the first sound absorption panel 22 are parallel to each other, two sides of the photovoltaic module are respectively connected with the two fixed side plates 23 and the fixed bottom plates 28, and a sound absorption resonant cavity 24 is formed in the middle of the photovoltaic module. The screen body of the photovoltaic module 21 is transparent, preferably cadmium telluride power generation glass is adopted, the light transmittance is not lower than 40%, under the parameter, the screen body of the photovoltaic module 21 is transparent, the operation condition of power equipment in a barrier can be intuitively exposed in the visual field of power inspection personnel, and the photovoltaic module 21 absorbs sunlight to convert light energy into electric energy. When the photovoltaic sound absorbing and insulating member does not need to satisfy the transparent condition, other photovoltaic modules 21 may be crystalline silicon batteries in addition to the observation window member. The first sound absorbing panel 22 is a transparent microperforated panel having a porosity of not more than 10% and a perforated aperture of not more than 1mm. The perforations are inclined perforations, and the side, facing the sound absorption resonant cavity 24, of the first sound absorption panel 22 is inclined downwards to form a sound source side, so that the cleaning water or precipitation in the cavity can automatically flow out along the inclined perforations. It is worth noting that when the power inspector is not near the sound barrier, the perforation inside the sound barrier does not affect the normal observation thereof.

Sealing gaskets are arranged between each photovoltaic sound absorption and insulation part and between the photovoltaic sound absorption and insulation parts and the observation window parts, so that sealing is kept between the two parts which are stacked up and down.

Low frequency noise is generated during operation of the transformer or converter transformer, and peaks in noise frequency occur mainly at 100Hz and its harmonic frequencies (e.g., 200Hz, 300Hz, 400Hz, and 500 Hz). Wherein, according to the field measured data, the peak value of the noise frequency of the converter transformer mainly appears at 200Hz and 400 Hz. The transformer noise energy is concentrated and distributed on peak frequency bands of 100Hz and 200Hz, and certain broadband noise characteristics exist in the frequency range of 300-500 Hz. The transformer or converter transformer is arranged on the inner side of the first sound absorption panel 22 of the sound insulation barrier, the outer side of the photovoltaic module 21 of the sound insulation barrier is a walking observation area for power inspection personnel, and low-frequency noise emitted by the transformer or converter transformer enters the sound absorption resonant cavity 24 through micropores on the first sound absorption panel 22. When the frequency of the incident sound wave is equal to the natural frequency of the system, the air column in the micro-perforation pore neck generates intense vibration due to resonance, and the air column and the pore neck side wall rub in the vibration to convert sound energy into heat energy, so that the sound absorption effect is achieved.

The sound insulation barrier is provided with an observation window part, the center of the observation window part is 1.5m-2.25m away from the ground, the structure of the observation window part is consistent with that of the photovoltaic sound absorption and insulation part, the first sound absorption panel 22 of the photovoltaic sound absorption and insulation part is replaced by a transparent observation panel 25, no perforation is carried out on the transparent observation panel, and an electric power inspection personnel can observe whether a transformer or a converter transformer at the inner side of the sound insulation barrier works normally or not through the transparent observation window in the walking process. The first sound absorption panel 22 and the transparent observation panel 25 are made of the same material and are PC boards or acrylic boards or toughened glass.

The steel stand 1 bottom is equipped with column foot 3, and inside is equipped with photovoltaic cable groove, and steel stand 1 section is the I shape, photovoltaic module 21 screen body is connected with steel stand 1 embedding, and both tops set up sealed roof 4. The joints of all parts of the photovoltaic module 21 are sealed by rubber gaskets, so that the sound insulation performance of the photovoltaic module 21 can be enhanced.

Example 2

As shown in fig. 7, fig. 7 is a schematic view of a sound insulation barrier structure having a slit resonance sound absorption structure, and embodiment 2 is different from embodiment 1 in that the bottoms of the first sound absorption panel 22 and the photovoltaic module 21 of embodiment 1 are in close contact with the fixing base plate 28, and in embodiment 2, a slit 27 is provided between the bottoms of the first sound absorption panel 22 and the photovoltaic module 21 and the fixing base plate 28, and the slit 27 communicates with the sound absorption resonance cavity 24, and when the transformer or the converter transformer operates to generate low frequency noise, the noise enters the sound absorption resonance cavity 24 through the first sound absorption panel 22 and the slit 27. When the frequency of the incident sound wave is equal to the natural frequency of the system, the incident sound wave converts sound energy into heat energy through resonance with air, thereby playing a role in sound absorption.

All the features of embodiment 1 can be applied to this embodiment, and all the features of this embodiment can also be applied to embodiment 1.

Example 3

As shown in fig. 8, fig. 8 is a schematic view of a longitudinal cross-section of a sound insulation barrier with a double-layer sound absorption and insulation structure and a slit resonance structure, in this embodiment, a second sound absorption panel 26 is added to the sound absorption resonance cavity 24, so that the original sound absorption resonance cavity 24 is divided into a first sound absorption resonance cavity and a second sound absorption resonance cavity, the distance between the second sound absorption panel 26 and the first sound absorption panel 22 is 120mm-130mm, preferably 125mm, and the distance between the second sound absorption panel 26 and the photovoltaic module 21 is 60mm-70mm, preferably 65mm. All the features of embodiment 1 and embodiment 2 can be applied to the present embodiment, and all the features of the present embodiment can also be applied to embodiment 1 and embodiment 2.

The absorption of low-frequency noise has been a current problem, and as shown in fig. 9, the present embodiment has an advantage in that it has an extremely excellent absorption effect on low-frequency noise having frequencies of 200Hz and 400Hz, and has a sound absorption coefficient between 0.98 and 1, so that it can almost completely absorb noise at a characteristic frequency peak of low-frequency noise generated during the operation of a transformer or a converter transformer.

In summary, the utility model provides the sound insulation barrier for the transformer or the converter transformer and the sound insulation transformer or the sound insulation converter transformer, which can effectively reduce low-frequency noise generated in the working process of the transformer or the converter transformer, the sound insulation barrier has the power generation function, can realize self-supply and absorption of electric energy in a station, is convenient for inspection personnel to observe the running condition of the electric equipment at the inner side of the barrier, and meanwhile, the photovoltaic assembly can delay the decolorization and aging of the electric equipment in the barrier by absorbing ultraviolet light.

It should be noted that in the present patent application, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. In the present patent application, if it is mentioned that an action is performed according to an element, it means that the action is performed at least according to the element, and two cases are included: the act is performed solely on the basis of the element and is performed on the basis of the element and other elements. Multiple, etc. expressions include 2, 2 times, 2, and 2 or more, 2 or more times, 2 or more.

All documents mentioned in the present application are considered to be included in the disclosure of the present application in their entirety, so that they may be subject to modification if necessary. Further, it will be understood that various changes or modifications may be made to the present application by those skilled in the art after reading the foregoing disclosure of the present application, and such equivalents are intended to fall within the scope of the present application as claimed.

Claims

1. A sound barrier for a transformer or converter transformer, comprising: the photovoltaic sound absorption and insulation components comprise a steel upright post (1) and a plurality of photovoltaic sound absorption and insulation components;

the first sound absorption panel (22) is parallel to the photovoltaic assembly (21), two side edges of the first sound absorption panel (22) are connected with the fixed side plates (23), the upper end and the lower end of the first sound absorption panel (22) are connected with the fixed bottom plate (28), and the first sound absorption panel (22) is a transparent micropunching plate;

the photovoltaic assembly (21), the first sound absorption panel (22), the fixed side plate (23) and the fixed bottom plate (28) are enclosed into a whole, and a sound absorption resonant cavity (24) is formed inside; the plurality of photovoltaic sound absorbing and insulating parts are stacked between the steel upright posts (1) along the longitudinal direction of the steel upright posts (1) to be basically flush with the upper end of the steel upright posts (1).

2. The sound barrier for a transformer or converter transformer of claim 1, further comprising a viewing window assembly;

3. The sound barrier for a transformer or converter transformer of claim 2, wherein between the plurality of photovoltaic sound absorbing and insulating members and between the photovoltaic sound absorbing and insulating member and the viewing window member are sealed by a gasket.

4. A sound barrier for a transformer or converter transformer according to claim 3, further comprising a second sound absorbing panel (26), the second sound absorbing panel (26) being a transparent microperforated panel, the second sound absorbing panel (26) being arranged in the sound absorbing resonant cavity (24) perpendicular to the ground, a first resonant cavity being formed between the first sound absorbing panel (22) and the second sound absorbing panel (26), a second resonant cavity being formed between the second sound absorbing panel (26) and the photovoltaic module (21); the distance between the second sound absorption panel (26) and the first sound absorption panel (22) is 120-130 mm, and the distance between the second sound absorption panel (26) and the photovoltaic module (21) is 60-70 mm;

5. The sound barrier for a transformer or converter transformer according to claim 2, wherein the observation window member is disposed between two of the photovoltaic sound absorbing and insulating members, the center of the observation window member is 1.5m to 2.25m from the ground, the photovoltaic sound absorbing and insulating members have a height of 1m to 1.5m and a length of 1.5m to 2m.

6. Sound barrier for a transformer or converter transformer according to claim 4, characterized in that the first sound absorbing panel (22) and the second sound absorbing panel (26) are PC board, acryl board or tempered glass;

7. Sound barrier for a transformer or converter transformer according to claim 1, characterized in that the first sound absorbing panel (22) is placed on the sound source side and the photovoltaic module (21) is placed on the sound receiving point side.

8. Sound barrier for a transformer or converter transformer according to claim 4, characterized in that the thickness of the first sound absorbing panel (22) is 0.8mm-1.5mm and the thickness of the second sound absorbing panel (26) is 2mm-3mm;

the perforation rate of the first sound absorption panel (22) is 0.5-1.5%, and the micropore aperture of the first sound absorption panel (22) is 0.4-0.8 mm;

the perforation rate of the second sound absorption panel (26) is 5-9 per mill, and the micropore aperture of the second sound absorption panel (26) is 1-1.5 mm;

the slit (27) has a slit width of 0.5mm-2mm;

the micropores are obliquely perforated, and one side of the transparent microperforated panel facing the photovoltaic module is obliquely perforated downwards towards the sound source side.

9. Sound-proof barrier for a transformer or converter transformer according to claim 1, characterized in that the bottom of the steel upright (1) is provided with a column foot (3), the inside of the steel upright (1) is provided with a photovoltaic cable trough, the section of the steel upright (1) is i-shaped, the upper end of the sound-proof barrier is provided with a sealing top plate (4), and the sealing top plate (4) is configured to seal the steel upright (1) and the photovoltaic sound-absorbing and insulating part substantially flush with the steel upright (1).

10. A sound insulating transformer or converter transformer, characterized by comprising a plurality of sound insulating barriers for a transformer or converter transformer according to any one of claims 1-9, said sound insulating barriers enclosing the outside of said transformer or converter transformer;

the sound insulation barrier comprising the observation window component is arranged in front of the surface to be inspected of the transformer or the converter transformer.