Sound barrier for absorbing and utilizing nitric oxide discharged by road moving source

Abstract

The invention belongs to green traffic and environmental protection equipment, and particularly relates to a sound barrier for absorbing and utilizing nitrogen oxides discharged by road moving sources, which comprises a sound insulation and absorption mechanism, a gas guide mechanism and an absorption reaction mechanism, the sound insulation and absorption part is arranged on the end face, facing a road, of the supporting part and used for weakening and reducing noise on the road, an air guide channel is formed in the supporting part and communicates with sound absorption ventilation holes formed in the sound insulation and absorption part, and the air guide mechanism communicates with the air guide channel. The gas guide mechanism attracts tail gas discharged by moving sources such as automobiles on a road to the gas guide channel and pumps the tail gas to the absorption reaction mechanism, the absorption reaction mechanism comprises a nitric oxide reaction solution, after the tail gas is introduced into the nitric oxide reaction solution, nitric oxide in the tail gas fully reacts with the nitric oxide reaction solution, and the tail gas is absorbed by the absorption reaction mechanism. High-value products such as nitrate, nitrite and the like are generated, and the products can be used as nitrogen fertilizer after being treated and can also be used as industrial raw materials for resource utilization through a crystallization and purification process.

Description

Technical Field

[0001] The invention belongs to green transportation and environmental protection equipment, and specifically is a sound barrier for absorbing and utilizing nitrogen oxides emitted by road mobile sources. Background Art

[0002] According to the "China Mobile Source Environmental Management Annual Report (2023)" released by the Ministry of Ecology and Environment: In 2022, the total emissions of carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NOx), and particulate matter (PM) from motor vehicles (including cars, low-speed cars, motorcycles, trailers and tractors) nationwide will be 14.662 million tons, of which nitrogen oxide emissions will be about 5.267 million tons. Cars are the main contributor to the total amount of pollutant emissions, accounting for more than 90%, and the urgency of strengthening pollution control of road mobile sources is becoming increasingly prominent.

[0003] In order to solve the problem of exhaust gas pollution from mobile sources on the road, it is necessary to carry out the "car-oil-road-enterprise" action in a coordinated manner in accordance with the central decision-making and deployment, and improve the governance level by establishing and improving the mobile source governance system and innovating governance methods. At present, there are very few studies on the treatment of exhaust gas emitted by mobile sources on the road using sound barriers as a carrier, and most sound barrier designs do not have the function of purifying automobile exhaust. At present, several related patents mainly use transparent thin sheets carrying TiO2 to catalytically oxidize under sunlight or ultraviolet light to achieve the purification of nitrogen oxides. The technology of using photocatalysis to convert pollutants in the exhaust gas of mobile sources on the road such as automobiles has problems such as high manufacturing cost, insufficient effective light radiation energy of the reaction device, slow photocatalytic reaction rate, low purification efficiency, and great influence by weather.

[0004] In view of the above problems, the present invention provides a sound barrier for absorbing and treating nitrogen oxides in exhaust gas emitted by road mobile sources such as automobiles. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a sound barrier that absorbs and utilizes nitrogen oxides emitted by mobile sources on the road. The sound barrier is installed beside the road and can, while achieving road sound insulation and sound absorption, react and process nitrogen oxides in the exhaust gas emitted by mobile sources on the road such as automobiles and form products with higher value, such as nitrates, which can be used as emergency snow-melting agents for roads, nitrogen fertilizers, etc., to achieve conversion and utilization.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a sound barrier for absorbing and utilizing nitrogen oxides emitted by mobile sources on the road, comprising a sound insulation and sound absorption mechanism, an air guiding mechanism and an absorption reaction mechanism, the sound insulation and sound absorption mechanism comprising a support member and a sound insulation and sound absorption member, an air guiding cavity is arranged inside the support member, an air inlet guide hole and an air outlet guide hole are arranged on the support member, the air inlet guide hole and the air outlet guide hole are communicated with the air guiding cavity and each air inlet guide hole, the air guiding cavity and the air outlet guide hole form an air guiding channel, a sound insulation and sound absorption member is provided with a sound absorption vent hole, the sound insulation and sound absorption member is arranged on the support member and the sound absorption vent hole is communicated with the air inlet guide hole, the air guiding mechanism is communicated with the air outlet guide hole and guides the nitrogen oxides emitted by the mobile source on the road to the absorption reaction mechanism through the air guiding channel, the absorption reaction mechanism comprises an absorption reaction chamber, and a nitrogen oxide reaction solution is arranged in the absorption reaction chamber. The exhaust gas and noise on the road diffuse toward the sound barrier beside the road. The noise is weakened by the sound insulation and sound absorption parts on the support, and the exhaust gas passes through the sound insulation and sound absorption parts into the air guide channel in the support. The air guide mechanism pumps the exhaust gas to the absorption reaction mechanism. The nitrogen oxide reaction solution in the absorption reaction mechanism contacts the exhaust gas, thereby absorbing and reacting the nitrogen oxides in the exhaust gas to achieve purification of the exhaust gas.

[0007] As an optional technical solution, the sound insulation and sound absorption member includes a second sound insulation and sound absorption board, on which second sound insulation and sound absorption boards are provided with second sound absorption holes and second sound absorption vents, at least one second sound insulation and sound absorption board is laid on the end surface of the support member facing the noise source, the second sound absorption vents of the second sound insulation and sound absorption board are connected with the air intake guide hole, and the end surfaces of the second sound insulation and sound absorption boards facing the noise source are spliced ​​to form a second sound insulation and sound absorption surface. The second sound insulation and sound absorption board is laid on the end surface of the support member facing the noise source, and the second sound insulation and sound absorption member is provided with second sound absorption holes and second sound absorption vents, and the exhaust gas can enter the air guide channel through the second sound absorption vents, and after the noise is transmitted to the second sound insulation and sound absorption board, it is reflected and consumed multiple times in the second sound absorption holes and the second sound absorption vents.

[0008] As an optional technical solution, a support tube is provided at the air inlet guide hole on the support member, the support tube is communicated with the air inlet guide hole, the second sound insulation and sound absorption board is provided on the support member, and the support tube penetrates into the second sound absorption vent hole. The second sound absorption vent hole cooperates with the support tube of the support member, which not only enables the second sound absorption vent hole to be communicated with the air guide channel, but also facilitates the rapid alignment and installation of the second sound insulation and sound absorption board on the support member.

[0009] As an optional technical solution, the sound insulation and sound absorption member further includes a first sound insulation and sound absorption plate, the first sound insulation and sound absorption plate is provided with a first sound absorption hole and a first sound absorption vent, at least one first sound insulation and sound absorption plate is provided on the second sound insulation and sound absorption surface, the first sound absorption vent of the first sound insulation and sound absorption plate is communicated with the second sound absorption vent. A first sound insulation and sound absorption plate is provided outside the second sound insulation and sound absorption plate, and the noise passes through the first sound insulation and sound absorption plate and the second sound insulation and sound absorption plate in sequence, achieving multiple attenuation and improving the noise elimination effect.

[0010] As an optional technical solution, the sound insulation and sound absorbing component also includes a sound insulation board. At least one sound insulation board is arranged on the second sound insulation and sound absorbing surface above the first sound insulation and sound absorbing board. Each sound insulation board is spliced ​​with the end surface of each first sound insulation and sound absorbing board facing the noise source to form the first sound insulation and sound absorbing surface.

[0011] As an optional technical solution, the air guide mechanism includes an air guide drive and an air guide pipe. The air inlet of the air guide drive communicates with the air outlet hole, and the air outlet of the air guide drive communicates with the air guide pipe. The air guide pipe extends into the absorption reaction chamber and communicates with the air distribution mechanism immersed in the nitrogen oxide reaction solution. The air guide drive is an air pump. The air pump draws negative pressure into the air guide channel to form a negative pressure area in front of the end face of the sound barrier facing the road, so as to attract and pump the exhaust gas on the road to the absorption reaction mechanism. As an optional technical solution, the gas distribution mechanism includes a gas distribution cavity, and a plurality of gas distribution holes are distributed on the outer wall of the gas distribution cavity. The gas distribution mechanism is immersed in the nitrogen oxide reaction solution, and the exhaust gas is dispersed and added into the nitrogen oxide reaction solution through the gas distribution mechanism, thereby improving the contact effect between the nitrogen oxide reaction solution and the exhaust gas, thereby facilitating the full reaction of the nitrogen oxides in the exhaust gas.

[0012] As an optional technical solution, the nitrogen oxide reaction solution is an alkaline solution with a mass concentration of 2%-5%, and the absorption reaction chamber is a container resistant to corrosion by the alkaline solution. By using the alkaline solution to react with nitrogen oxides in the exhaust gas, high-value products such as nitrates and nitrites that can be recycled can be generated.

[0013] As an optional technical solution, a sound insulation and sound absorption protection plate is provided on the side of the support member facing away from the noise source, a container is provided between the support member and the sound insulation and sound absorption protection plate, and the support member, the sound insulation and sound absorption protection plate and the top surface of the container form a rainwater drainage groove; a water retaining conduit is provided on the top of the container, the water retaining conduit is communicated with the inner cavity of the container, and the air guide pipe passes through the water retaining conduit and communicates with the air distribution mechanism. The absorption reaction chamber is detachably provided at the installation position formed on the back of the support member, and the support member and the sound insulation and sound absorption protection plate cooperate with the absorption reaction chamber to form a rainwater drainage groove, which is beneficial for draining rainwater when the sound barrier is used in the rainy season or rainy areas.

[0014] As an optional technical solution, an assembling part is provided on the side of the support member, a sound insulation protection member is provided on the top of the support member, and the sound insulation end surface of the sound insulation protection member is connected to the first sound insulation and sound absorption end surface; The support is provided with a power generation and energy storage mechanism, which is connected to the solar power generation panel provided on the sound insulation protection member and / or the solar power generation panel provided on the support, and is also connected to the air guide drive member and supplies power to the air guide drive member.

[0015] The sound barrier can be assembled and used according to the actual length requirements. The sound barrier is also equipped with a solar power generation system, which can be used to power the air guide drive components and the heating and heat preservation mechanism used to keep the absorption reaction chamber warm.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the sound barrier of the present invention, a second sound insulation and sound absorption board, a first sound insulation and sound absorption board, a sound insulation board and a sound insulation protective member are arranged on the end surface of the support member facing the road to form a sound insulation and sound absorption member with multiple noise reduction effects. The noise emitted by the mobile source on the road is reduced through multiple attenuation and noise reduction, which effectively reduces the impact on the area outside the road; 2. The structure of the sound insulation and sound absorption member can not only reduce the noise, but also facilitate the exhaust gas emitted by the mobile source on the road to be attracted into the air guide channel by the air guide mechanism. After the exhaust gas enters the air guide channel, it is further pumped into the absorption reaction chamber by the air guide mechanism. The exhaust gas and the absorption reaction chamber The exhaust gas contacts the nitrogen oxide reaction solution, and the nitrogen oxides in the exhaust gas are reacted by the solution, thereby achieving the purification of the exhaust gas. At the same time, products such as high-value nitrates are generated, thereby achieving the utilization of useful resources in the exhaust gas and making the sound barrier of the present invention have the attribute of creating profits; 3. The air guide mechanism cooperates with the internal structure of the support and the absorption reaction mechanism, which not only achieves the purification of the exhaust gas, but also can reduce the fine particulate matter generated by cars driving near the road, improve the air quality, and achieve the purification of the environment; 4. The sound barrier is equipped with a solar power generation panel and a matching power generation and energy storage mechanism, which can supply power to power-consuming components such as the air guide drive components in the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the sound barrier; Figure 2 This is a side view of the sound barrier; Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle; Figure 4 is a schematic diagram of the panel structure of the first sound insulation and sound absorption panel; Figure 5 is a schematic diagram of the panel structure of the second sound insulation and sound absorbing panel; Figure 6 It is a schematic diagram of the connection between the air guide mechanism and the sound insulation and absorption mechanism; Figure 7It is a structural schematic diagram of the gas guide mechanism and the absorption reaction mechanism; In the figure: 101, support member, 102, air guide cavity, 103, second sound insulation and sound absorption plate, 104, second sound absorption hole, 105, second sound absorption vent, 106, support tube, 107, first sound insulation and sound absorption plate, 108, first sound absorption hole, 109, first sound absorption vent, 110, sound insulation board, 111, sound insulation and sound absorption protection board, 112, rainwater drainage groove, 113, assembly part, 114, power generation and energy storage mechanism, 115, solar power generation panel, 116, sound insulation protection member, 201, air guide drive member, 202, air guide pipe, 203, air distribution mechanism, 301, absorption reaction chamber, 302, nitrogen oxide reaction solution. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0020] like Figure 1 As shown, a sound barrier for absorbing and utilizing nitrogen oxides emitted from mobile sources on the road is used to be installed beside the road to absorb and sound-insulate the sounds of vehicles and other mobile sources on the road, and can absorb and treat nitrogen oxides in the exhaust gas emitted by mobile sources such as vehicles. After absorption and treatment, the nitrogen oxides in the exhaust gas generate nitrates, nitrites and other products, which are beneficial for the subsequent production of snow-melting agents or nitrogen fertilizers, etc., to achieve resource utilization.

[0021] The sound barrier of the present invention comprises a sound insulation and sound absorption mechanism, an air guiding mechanism and an absorption and reaction mechanism. The sound insulation and sound absorption mechanism is mainly used to insulate and absorb the noise emitted by mobile sources such as cars on the road, reducing the impact of noise on areas outside the road, and the air guiding mechanism is used to attract and guide the exhaust gas emitted by mobile sources such as cars on the road to the absorption and reaction mechanism, and the absorption and reaction mechanism reacts and processes the nitrogen oxides in the exhaust gas.

[0022] See also Figure 1 , Figure 2 and Figure 7The sound insulation and sound absorption mechanism includes a support member 101 and a sound insulation and sound absorption member. The support member 101 can be in the form of a support plate, a support frame, etc. After the sound barrier is installed beside the road, one end face of the support member 101 faces the road, specifically, the noise source on the road. The support member 101 can not only play a role in blocking and isolating, but also serve as the matrix of the overall structure of the sound barrier. An air guide cavity 102 is arranged inside the support member 101. An air outlet guide hole is arranged on the support member 101. The air outlet guide hole can be arranged on the side of the support member 101 or on the end face of the support member 101 facing away from the noise source. An air inlet guide hole is arranged on the end face of the support member 101 facing the noise source. Preferably, there are multiple air inlet guide holes. Both the air outlet guide hole and the air inlet guide hole are connected to the air guide cavity 102. Each air inlet guide hole, the air guide cavity 102 and the air outlet guide hole form an air guide channel.

[0023] See also Figure 6 The air guide mechanism is connected with the air outlet guide hole, and the air guide mechanism includes an air guide driver 201 and an air guide pipe 202. The air guide driver 201 is an air pump or other form of equipment for driving gas flow. The air inlet of the air guide driver 201 is connected with the air outlet guide hole, and the air outlet of the air guide driver 201 is connected with the air guide pipe 202, and the air guide pipe 202 is connected with the absorption reaction mechanism. Under the action of the air guide driver 201, a negative pressure area is formed in the front area of ​​the end face of the support member 101 facing the noise source. The exhaust gas emitted by mobile sources such as cars on the road flows toward the negative pressure area and enters the air guide channel from the negative pressure area. After passing through the air guide channel, the air guide driver 201 and the air guide pipe 202 in sequence, it enters the absorption reaction mechanism, and the absorption reaction mechanism reacts and treats the nitrogen oxides in the exhaust gas.

[0024] See also Figure 1 , Figure 2 , Figure 6 and Figure 7 The absorption reaction mechanism includes an absorption reaction chamber 301, in which a nitrogen oxide reaction solution 302 is arranged. The nitrogen oxide reaction solution 302 is an alkali solution that can react with nitrogen oxides, preferably an alkali solution with a mass concentration of 2%-5%. The absorption reaction chamber 301 is a container made of plastic or other materials that is resistant to alkali corrosion. The air guide pipe 202 extends into the absorption reaction chamber 301, and the air outlet end of the air guide pipe 202 is immersed in the nitrogen oxide reaction solution 302, so that the nitrogen oxide reaction solution 302 can fully contact with the exhaust gas, thereby fully reacting the nitrogen oxides in the exhaust gas.

[0025] The nitrogen oxides in the tail gas that react with the alkali solution are mainly nitrogen dioxide. In addition, the carbon dioxide in the tail gas can also react with the alkali solution. After the tail gas is passed into the alkali solution, part of the alkali solution directly reacts with the nitrogen oxides in the tail gas at room temperature. The reaction process is: 2NO2+2NaOH→NaNO3+NaNO2+H2O NO2+NO+2NaOH→2NaNO2+H2O The process of some alkali liquid reacting with CO2 in the tail gas at room temperature first and then with nitrogen oxides is as follows: CO2+2NaOH→Na2CO3+H2O 2NO2+Na2CO3→NaNO2+NaNO3+CO2 The alkali solution fully contacts and reacts with the nitrogen oxides in the exhaust gas to generate a nitrate solution. The nitrite solution can be used as a nitrogen fertilizer after simple treatment, or as a raw material for emergency snow melting agents on roads after industrial operations such as crystallization and purification, thus realizing the resource utilization of nitrogen oxides. In addition, the air guide mechanism attracts and guides the exhaust gas on the road to the absorption reaction mechanism for reaction, which can also reduce the impact of fine particulate matter generated by cars driving near the road, so as to more accurately evaluate the road management effect.

[0026] See also Figure 7 In order to fully react the nitrogen oxides in the exhaust gas, in some embodiments, an air distribution mechanism 203 is provided in the absorption reaction chamber 301, the air distribution mechanism 203 is immersed in the nitrogen oxide reaction solution 302, and the air guide pipe 202 extends into the reaction chamber and communicates with the air distribution mechanism 203. The air guide mechanism guides the exhaust gas on the road to the air distribution mechanism 203, and under the action of the air distribution mechanism 203, the exhaust gas is dispersed and passed into the nitrogen oxide reaction solution 302, so that the nitrogen oxide reaction solution 302 can fully contact with the exhaust gas, thereby improving the treatment effect of the exhaust gas.

[0027] The air distribution mechanism 203 includes an air distribution cavity, which may be an air distribution pipe, an air distribution plate, an air distribution box, etc. having an inner cavity, and a plurality of air distribution holes are distributed on the outer wall of the air distribution cavity. The air guide mechanism guides the exhaust gas on the road into the air distribution cavity. Driven by the air guide mechanism, the exhaust gas in the air distribution cavity is dispersed from each air distribution hole into the absorption reaction cavity 301 and fully contacts and reacts with the nitrogen oxide reaction solution 302.

[0028] The absorption reaction chamber 301 is also provided with an exhaust hole to facilitate the discharge of the gas that does not participate in the reaction in the tail gas. In some embodiments, the hole structure on the absorption reaction chamber 301 for the air guide pipe 202 to extend into can also serve as an exhaust hole.

[0029] See also Figure 1 , Figure 2 , Figure 6 and Figure 7In some embodiments, a sound insulation and sound absorption protection plate 111 is provided on the side of the support 101 facing away from the noise source, and the absorption reaction chamber 301 is provided between the support 101 and the sound insulation and sound absorption protection plate 111. The support 101 and the sound insulation and sound absorption protection plate 111 play a role in protecting the absorption reaction chamber 301. The support 101, the sound insulation and sound absorption protection plate 111 and the top surface of the absorption reaction chamber 301 form a rainwater drainage groove 112, which can prevent excessive rainwater from entering the absorption reaction chamber 301 during the rainy season. Further, a water retaining guide is provided on the top of the container, which separates the hole on the absorption reaction chamber 301 for the air guide pipe 202 to extend from the rainwater drainage groove 112, so as to prevent rainwater in the rainwater drainage groove 112 from entering the absorption reaction chamber 301. As an example, the water-guiding baffle is a water-blocking duct, which is connected to the inner cavity of the container. The water-blocking duct is vertically arranged to prevent rainwater from the rainwater drainage trough 112 from entering the container. The air duct 202 passes through the water-blocking duct and is connected to the air distribution mechanism 203. The air duct 202 is also used as an exhaust pipe of the absorption reaction chamber 301 to facilitate the discharge of gases that do not participate in the reaction in the exhaust gas.

[0030] The sound insulation and sound absorption protection plate 111 may also be an L-shaped plate, and the sound insulation and sound absorption protection plate 111 is connected to the support member 101 to form a placement position for placing the absorption reaction chamber 301. The absorption reaction chamber 301 is detachably arranged in the placement position to facilitate the disassembly and replacement of the absorption reaction chamber 301. Since the air guide pipe 202 is connected to the air distribution mechanism 203, and the connection between the two is immersed in the nitrogen oxide reaction solution 302, it is difficult to disassemble the air guide pipe 202 and the air distribution mechanism 203 when the absorption reaction chamber 301 is disassembled and replaced. In order to solve this technical problem, the air guide pipe 202 is detachably connected to the air guide drive 201, or the air guide pipe 202 includes a pipe body with detachable connections at both ends, and the connection is outside the absorption reaction chamber 301. The absorption reaction chamber 301 needs to be disassembled, and the connection of the air guide pipe 202 is disconnected or the air guide pipe 202 is disconnected from the air guide drive 201.

[0031] In a further embodiment, the sound insulation and sound absorption protection plate 111 is provided with a heat preservation and heating mechanism, which can be used to heat the absorption reaction chamber 301 in winter to prevent the nitrogen oxide reaction solution 302 inside from freezing.

[0032] The sound insulation and sound absorption member is provided with a sound absorption vent, which is arranged on the end surface of the support member 101 facing the noise source, and the sound absorption vent of the sound insulation and sound absorption member is communicated with the air intake guide hole, and the sound insulation and sound absorption member is used to absorb sound and reduce the noise emitted by mobile sources such as cars on the road. For details, please refer to Figure 1 , Figure 2 and Figure 5The sound insulation and sound absorption member includes a second sound insulation and sound absorption plate 103, on which a second sound absorption hole 104 and a second sound absorption vent 105 are arranged. At least one second sound insulation and sound absorption plate 103 is laid on the end surface of the support member 101 facing the noise source. The second sound absorption vent 105 of the second sound insulation and sound absorption plate 103 is communicated with the air intake hole. The end surfaces of the second sound insulation and sound absorption plates 103 facing the noise source are spliced ​​to form a second sound insulation and sound absorption surface.

[0033] The second sound absorbing holes 104 and the second sound absorbing vents 105 on the second sound insulating and sound absorbing plate 103 both play a role in sound absorption. When the noise on the road is transmitted to the second sound insulating and sound absorbing surface, it is dispersed to the second sound absorbing holes 104 and the second sound absorbing vents 105. The sound is reflected and consumed multiple times in the second sound absorbing holes 104 and the second sound absorbing vents 105, thereby being weakened. In addition to playing the same sound absorbing effect as the second sound absorbing holes 104, the second sound absorbing vents 105 are also connected to the air intake guide holes on the support member 101, playing a role in guiding the exhaust gas.

[0034] See also Figure 5 and Figure 6 As a further embodiment, a support tube 106 is provided at each air intake guide hole on the support member 101, the support tube 106 is communicated with the corresponding air intake guide hole, the support tube 106 protrudes from the end surface of the support member 101 facing the noise source, when the second sound insulation and sound absorption board 103 is provided on the support member 101, the support tube 106 extends into the second sound absorption vent 105, and the second sound insulation and sound absorption board 103 is installed on the support member 101 in a nested manner between the support tube 106 and the second sound absorption vent 105, and the support tube 106 facilitates the precise alignment installation of the second sound insulation and sound absorption board 103 on the support member 101.

[0035] See also Figure 1-Figure 4The sound insulation and sound absorption member further comprises a first sound insulation and sound absorption plate 107, on which a first sound absorption hole 108 and a first sound absorption vent 109 are arranged. At least one first sound insulation and sound absorption plate 107 is arranged on the second sound insulation and sound absorption surface, and the first sound absorption vent 109 of the first sound insulation and sound absorption plate 107 is communicated with the second sound absorption vent 105. The first sound absorption holes 108 and the first sound absorption vent 109 on the first sound insulation and sound absorption plate 107 both play a role in sound absorption. When the noise on the road is transmitted to the first sound insulation and sound absorption plate 107, it is dispersed into each first sound absorption hole 108 and each first sound absorption vent 109. The noise is refracted and consumed multiple times in the first sound absorption hole 108 and the first sound absorption vent 109, so that it is weakened. The weakened noise is then dispersed to the second sound insulation and sound absorption surface, and is weakened again through each second sound absorption hole 104 and each second sound absorption vent 105, so as to achieve a better sound absorption and noise reduction effect. In addition to having the same sound absorption effect as the first sound absorption hole 108, the first sound absorption vent 109 is also connected to the corresponding second sound absorption vent 105 on the second sound insulation and sound absorption surface to guide the exhaust gas.

[0036] Considering that the density of nitrogen dioxide is 1.6 times that of air, nitrogen dioxide in exhaust gas is often concentrated near the road surface. In order to better collect exhaust pollutants and reduce the impact of dust, as an optional implementation method, please refer to Figure 1 The sound insulation and sound absorption member also includes a sound insulation board 110. At least one sound insulation board 110 is arranged on the second sound insulation and sound absorption surface above the first sound insulation and sound absorption board 107. Each sound insulation board 110 mainly plays the role of sound insulation or sound absorption, and has a small demand for guiding automobile exhaust. Therefore, the material and structure of the sound insulation board 110 can be the same as the first sound insulation and sound absorption board 107, and can also be connected with the sound insulation board 110 used in the sound barrier in the prior art. The end surface of each sound insulation board 110 facing the noise source is spliced ​​with the end surface of each first sound insulation and sound absorption board 107 facing the noise source to form the first sound insulation and sound absorption surface.

[0037] The noise emitted by mobile sources such as cars on the road, after being transmitted to the first sound insulation and sound absorption surface, is weakened at the first level at each sound insulation board 110 and each first sound insulation and sound absorption board 107, and then transmitted to the second sound insulation and sound absorption surface, and is weakened at the second level at each second sound insulation and sound absorption board 103, and finally a better sound absorption and noise reduction effect is achieved; and the exhaust gas emitted by the mobile source enters the air guide channel from the first sound absorption vent 109 and the second sound absorption vent 105 under the action of the air guide mechanism, and finally enters the absorption reaction chamber 301 to contact and react with the nitrogen oxide reaction solution 302.

[0038] See also Figure 1A sound insulation protection member 116 is arranged on the top of the support member 101. The sound insulation protection member 116 can be an ordinary baffle or a sound insulation board 110 made of the same material as the sound insulation board 110. The sound insulation protection member 116 is arranged obliquely or horizontally at the top position of the support member 101. The end surface of the sound insulation protection member 116 facing the direction of the noise source is the sound insulation end surface. The sound insulation end surface is connected to the first sound insulation and sound absorption surface. The sound insulation end surface cooperates with the first sound insulation end surface to improve the sound insulation effect of noise.

[0039] The sound barrier of the present invention is also provided with a solar power generation system, which is used to power the air guide drive 201 in the form of an air pump and the heat preservation and heating mechanism. The solar power generation system is a prior art product, including a solar power generation panel 115 and a power generation and storage mechanism. The power generation and storage mechanism 114 cooperates with the solar power generation panel 115 to realize power generation, storage and power supply. In some embodiments, the solar power generation panel 115 is a thin-film solar power generation panel 115, and is arranged on the top surface of the sound insulation protective member 116, and the power generation and storage mechanism is connected to the thin-film solar power generation panel 115; in other embodiments, a safety bracket is arranged on the support member 101, a solar power generation panel 115 is arranged on the mounting bracket, and the power generation and storage mechanism is arranged below the safety bracket and connected to the solar power generation panel 115; in a preferred embodiment, a thin-film solar power generation panel 115 is arranged on the top surface of the sound insulation protective member 116, a safety bracket is arranged on the support member 101, a solar power generation panel 115 is arranged on the mounting bracket, and the power generation and storage mechanism is arranged below the safety bracket and connected to each solar power generation panel 115. The power generation and storage mechanism is connected to the air guide drive member 201 and the heat preservation and heating mechanism and supplies power to both.

[0040] In addition to the sound insulation effect, the sound insulation protection member 116 also serves to extend the sound insulation range, balance the center of gravity of the sound barrier, and guide rainwater to flush the solar power generation panel 115 during the rainy season.

[0041] In some embodiments, the side of the support member 101 is further provided with a support assembly portion, and the support assembly portions of two sound barriers can be assembled and connected so that the two sound barriers are assembled to form a longer sound barrier. The sound barrier of this embodiment can be used as an assembly unit and assembled according to the length requirements in actual use. The support assembly portion can be a connecting hole in the form of a through hole or a threaded hole, or a protruding connecting rod and / or connecting groove.

[0042] Please refer again Figure 1-Figure 7As a preferred embodiment, the support member 101 is in the form of a support plate, and a plurality of air intake holes are arranged on the end surface of the support member 101 facing the road. The air intake holes are distributed in a plurality of rows and columns, and a support tube 106 is arranged at each air intake hole of the support member 101. A plurality of second sound insulation and sound absorption panels 103 are laid on the end surface of the support member 101 facing the road, and the second sound insulation and sound absorption panels 103 are distributed vertically and connected in sequence. The second sound insulation and sound absorption panels 103 are provided with a plurality of rows of second sound absorption vents 105, and at least one row of second sound absorption holes 104 is provided between two adjacent rows of second sound absorption vents 105 on the second sound insulation and sound absorption panels 103. After the second sound insulation and sound absorption panels 103 are arranged on the support member 101, the second sound absorption vents 105 correspond to the positions of the support tubes 106, respectively. The second sound insulation and sound absorption panels 103 are installed on the support member 101 in a nested manner, which is not only convenient for alignment installation, but also can prevent the second sound insulation and sound absorption panels 103 from falling off.

[0043] The end surfaces of the second sound insulation and sound absorbing panels 103 facing the noise source are spliced ​​to form a second sound insulation and sound absorbing surface. A plurality of first sound insulation and sound absorbing panels 107 are laid in the lower area of ​​the second sound insulation and sound absorbing surface. The first sound insulation and sound absorbing panels 107 are vertically distributed. A plurality of rows of first sound absorption vents 109 are arranged on the first sound insulation and sound absorbing panels 107. At least one row of first sound absorption holes 108 is arranged between two adjacent rows of first sound absorption vents 109 on the first sound insulation and sound absorbing panels 107. After the first sound insulation and sound absorbing panels 107 are installed on the second sound insulation and sound absorbing surface, the first sound absorption vents 109 are communicated with the second sound absorption vents 105. Sound insulation panels 110 are distributed in the area above the first sound insulation and sound absorbing panels 107 on the second sound insulation and sound absorbing surface. The sound insulation panels 110 are also vertically distributed.

[0044] Furthermore, on the second sound insulation and sound absorbing surface, each sound insulation board 110 is sequentially arranged from top to bottom, the upper edge of the upper sound insulation board 110 is connected to the second sound insulation and sound absorbing surface, the lower edge of the upper sound insulation board 110 is placed on the adjacent sound insulation board 110 below or the end surface of the first sound insulation and sound absorbing board 107 facing the noise source, and each first sound insulation and sound absorbing board 107 is also sequentially arranged from top to bottom, that is, the upper edge of the first sound insulation and sound absorbing board 107 is connected to the second sound insulation and sound absorbing surface, and the lower edge of the first sound insulation and sound absorbing board 107 is placed on the end surface of the adjacent first sound insulation and sound absorbing board 107 below facing the noise source. Each sound insulation board 110 and each first sound insulation and sound absorbing board 107 are not completely attached to the second sound insulation and sound absorbing surface, and each sound insulation board 110 and each first sound insulation and sound absorbing board 107 have a gap reserved between them and the second sound insulation and sound absorbing surface for sound propagation or exhaust gas to pass through.

[0045] As a preferred example of the first sound insulating and sound absorbing plate 107 and the second sound insulating and sound absorbing plate 103, the first sound insulating and sound absorbing plate 107 and the second sound insulating and sound absorbing plate 103 are both as wide as the end surface of the support 101 facing the noise source, and the height of the first sound insulating and sound absorbing plate 107 and the second sound insulating and sound absorbing plate 103 are both 30 cm. The second sound absorbing vent holes 105 on the second sound insulating and sound absorbing plate 103 are distributed in 3 rows and 5 columns, the second sound absorbing vent holes 105 in two adjacent rows are staggered, and the second sound absorbing holes 104 are distributed in 6 rows and 10 columns, wherein the aperture of the second sound absorbing vent holes 105 is larger than the aperture of the second sound absorbing holes 104, and two rows of second sound absorbing holes 104 are arranged between two adjacent rows of second sound absorbing vent holes 105. On the second sound insulating and sound absorbing plate 103, a row of second sound absorbing holes 104 is arranged above the topmost row of second sound absorbing vent holes 105 and below the bottommost row of second sound absorbing vent holes 105, so that after the two second sound insulating and sound absorbing plates 103 are vertically spliced, there are two rows of second sound absorbing holes 104 between any two adjacent rows of second sound absorbing vent holes 105 on the second sound insulating and sound absorbing surface.

[0046] The first sound absorbing vent holes 109 on the first sound insulating and sound absorbing plate 107 are distributed in 4 rows and 7 columns, and the first sound absorbing holes 108 are distributed in 8 rows and 15 columns. The aperture of the first sound absorbing vent holes 109 is larger than the aperture of the first sound absorbing holes 108. Two rows of first sound absorbing holes 108 are arranged between two adjacent rows of first sound absorbing vent holes 109. A row of first sound absorbing holes 108 is arranged above the top row of first sound absorbing vent holes 109 and below the bottom row of first sound absorbing vent holes 109 on the first sound insulating and sound absorbing plate 107, so that after the two first sound insulating and sound absorbing plates 107 are vertically spliced, there are two rows of first sound absorbing holes 108 between any two adjacent rows of first sound absorbing vent holes 109 on the first sound insulating and sound absorbing surface.

[0047] The aperture of the first sound absorption hole 108 is smaller than that of the second sound absorption hole 104, the aperture of the first sound absorption vent hole 109 is smaller than that of the second sound absorption vent hole 105, and each of the first sound insulation and sound absorption panels 107 and each of the second sound insulation and sound absorption panels 103 forms a multi-layer microporous structure on the end surface of the support member 101 facing the road, achieving a good sound absorption and noise reduction effect, and is suitable for cooperating with the air guide mechanism, so that the air guide mechanism can guide the exhaust gas on the road to the absorption reaction mechanism for absorption reaction, thereby achieving the effect of sound absorption and noise reduction and ensuring the exhaust gas absorption and purification.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sound barrier for absorbing and utilizing nitrogen oxides emitted by road mobile sources, characterized in that: The invention comprises a sound insulation and sound absorption mechanism, an air guide mechanism and an absorption reaction mechanism. The sound insulation and sound absorption mechanism comprises a support member (101) and a sound insulation and sound absorption member. An air guide cavity (102) is arranged inside the support member (101). An air inlet guide hole and an air outlet guide hole are arranged on the support member (101). The air inlet guide hole and the air outlet guide hole are communicated with the air guide cavity (102), and each of the air inlet guide hole, the air guide cavity (102) and the air outlet guide hole forms an air guide channel. The sound insulation and sound absorption member is provided with a sound absorption vent hole. The sound insulation and sound absorption member is arranged on the support member (101) and the sound absorption vent hole is communicated with the air inlet guide hole. The air guide mechanism is communicated with the air outlet guide hole and guides nitrogen oxides emitted by a road mobile source to the absorption reaction mechanism through the air guide channel. The absorption reaction mechanism comprises an absorption reaction chamber (301). A nitrogen oxide reaction solution (302) is arranged in the absorption reaction chamber (301).

2. A sound barrier for absorbing and utilizing nitrogen oxides emitted by road mobile sources according to claim 1, characterized in that: The sound insulation and sound absorption component comprises a second sound insulation and sound absorption plate (103), the second sound insulation and sound absorption plate (103) is provided with a second sound absorption hole (104) and a second sound absorption vent (105), at least one second sound insulation and sound absorption plate (103) is laid on the end surface of the support member (101) facing the noise source, the second sound absorption vent (105) of the second sound insulation and sound absorption plate (103) is communicated with the air intake guide hole, and the end surfaces of the second sound insulation and sound absorption plates (103) facing the noise source are spliced ​​to form a second sound insulation and sound absorption surface.

3. A sound barrier for absorbing and utilizing nitrogen oxides emitted by road mobile sources according to claim 2, characterized in that: A support pipe (106) is provided on the support member (101) at the air intake guide hole, the support pipe (106) is in communication with the air intake guide hole, the second sound insulation and sound absorption plate (103) is provided on the support member (101), and the support pipe (106) penetrates into the second sound absorption vent hole (105).

4. The sound barrier for absorbing and utilizing nitrogen oxides emitted by road mobile sources according to claim 2, characterized in that: The sound insulation and sound absorption component further comprises a first sound insulation and sound absorption plate (107), on which a first sound absorption hole (108) and a first sound absorption vent (109) are arranged, and at least one first sound insulation and sound absorption plate (107) is arranged on the second sound insulation and sound absorption surface, and the first sound absorption vent (109) of the first sound insulation and sound absorption plate (107) is in communication with the second sound absorption vent (105).

5. The sound barrier for absorbing and utilizing nitrogen oxides emitted by road mobile sources according to claim 4, characterized in that: The sound insulation and sound absorption component further comprises a sound insulation board (110); at least one sound insulation board (110) is arranged on the second sound insulation and sound absorption surface above the first sound insulation and sound absorption board (107); and each sound insulation board (110) and each first sound insulation and sound absorption board (107) are spliced ​​together on their end surfaces facing the noise source to form a first sound insulation and sound absorption surface.

6. The sound barrier for absorbing and utilizing nitrogen oxides emitted by road mobile sources according to claim 5, characterized in that: The air guide mechanism comprises an air guide driving member (201) and an air guide pipe (202); an air inlet of the air guide driving member (201) is in communication with an air outlet guide hole; an air outlet of the air guide driving member (201) is in communication with the air guide pipe (202); the air guide pipe (202) extends into the absorption reaction chamber (301) and is in communication with an air distribution mechanism (203) immersed in the nitrogen oxide reaction solution (302).

7. A sound barrier for absorbing and utilizing nitrogen oxides emitted by road mobile sources according to claim 6, characterized in that: The air distribution mechanism (203) comprises an air distribution cavity, and a plurality of air distribution holes are distributed on the outer wall of the air distribution cavity.

8. The sound barrier for absorbing and utilizing nitrogen oxides emitted by road mobile sources according to claim 6, characterized in that: The nitrogen oxide reaction solution (302) is an alkaline solution with a mass concentration of 2% to 5%, and the absorption reaction chamber (301) is a container resistant to corrosion by the alkaline solution.

9. The sound barrier for absorbing and utilizing nitrogen oxides emitted by road mobile sources according to claim 8, characterized in that: A sound insulation and sound absorption protection plate (111) is arranged on the side of the support member (101) facing away from the noise source; the container is arranged between the support member (101) and the sound insulation and sound absorption protection plate (111); the support member (101), the sound insulation and sound absorption protection plate (111) and the top surface of the container form a rainwater drainage groove (112); a water retaining conduit is arranged on the top of the container, the water retaining conduit is communicated with the inner cavity of the container, and the air guide pipe (202) passes through the water retaining conduit and is communicated with the air distribution mechanism (203).

10. The sound barrier for absorbing and utilizing nitrogen oxides emitted by road mobile sources according to claim 6, characterized in that: An assembling portion (113) is provided on the side of the support member (101), a sound insulation protection member (116) is provided on the top of the support member (101), and a sound insulation end surface of the sound insulation protection member (116) is connected to the first sound insulation and sound absorption end surface; The support member (101) is provided with a power generation and energy storage mechanism (114), the power generation and energy storage mechanism (114) is connected to a solar power generation panel (115) provided on the sound insulation protection member (116) and / or a solar power generation panel (115) provided on the support member (101), and the power generation and energy storage mechanism (114) is also connected to an air guide drive member (201) and supplies power to the air guide drive member (201).

Images