CN114017883A - Intelligent purification device and method for air in tunnel - Google Patents
Intelligent purification device and method for air in tunnel Download PDFInfo
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- CN114017883A CN114017883A CN202111294702.1A CN202111294702A CN114017883A CN 114017883 A CN114017883 A CN 114017883A CN 202111294702 A CN202111294702 A CN 202111294702A CN 114017883 A CN114017883 A CN 114017883A
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- electrostatic dust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/90—Cleaning of purification apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/95—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying specially adapted for specific purposes
- F24F8/99—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying specially adapted for specific purposes for treating air sourced from urban areas, e.g. from streets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/64—Airborne particle content
Abstract
The invention provides an intelligent purification device and an intelligent purification method for air in a tunnel, wherein an electrostatic dust removal device, an automatic water washing system connected with the electrostatic dust removal device and a programmable logic controller are arranged in the intelligent purification device; and a step-by-step starting module of the electrostatic dust removal device is arranged in the programmable logic controller and used for controlling the step-by-step starting of the electrostatic dust removal device. The intelligent purification method realizes continuous purification of air by automatically controlling the electrostatic dust removal device and the automatic water washing system, and ensures the stability and reliability of the whole system.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to an intelligent purification device and an intelligent purification method for air in a tunnel.
Background
At present, more and more tunnels are built, but a professional tunnel uses fewer air purification systems, and main pollutants in the tunnel, including automobile exhaust emission, comprise particulate matters, carbon monoxide (CO), Hydrocarbons (HC) and Nitric Oxides (NO)X) Lead (Pb), etc.
Mechanical prefilter, electrostatic precipitator and NO of air purification system used in tunnel2The purification system and the like can remove harmful gases such as particulate matters, dust, nitrogen oxides and the like in the air in the tunnel.
For example, CN209519531U discloses an air purification system suitable for urban tunnels, which arranges a purification system on the side wall of a tunnel, does not occupy valuable space outside the tunnel, and uses the purification system to treat dirty air in the tunnel, thereby ensuring the air quality inside the tunnel and in the air outlet area of the tunnel, but the system does not recognize the monitoring problem in air purification.
CN108590734A discloses an air purification device for road tunnel, air purification device includes the main casing body, is provided with the water tank in the main casing body, and one side of water tank is provided with electrostatic precipitator and air purifier, along the length direction of the main casing body, electrostatic precipitator and air purifier set up at the homonymy, and air purifier's gas outlet stretches out the main casing and forms air purification outlet pipe outward, and the inside of water tank is through conveyer pipe and air purification outlet pipe switch-on, and the conveyer pipe adopts the mode of tangential oblique inserting and air purification outlet pipe switch-on. However, the air purification device does not involve the problem of air monitoring, is difficult to realize remote and automatic monitoring, and does not involve the starting problem of the electrostatic dust collector after water washing.
CN208186597U discloses a tunnel polluted air purifying apparatus, which includes a grating door, wherein the grating door is installed in a tunnel bypass pipe, one side of the grating door is provided with a prefilter, one side of the prefilter is provided with an air valve, one side of the air valve is provided with a cleaning device, one side of the cleaning device is provided with an electrostatic dust collector, one side of the electrostatic dust collector is provided with a denitration device, a sewage pool and a clean water pool are installed between the electrostatic dust collector and the denitration device, and one side of the denitration device is provided with an axial flow fan; the inside of the control room is provided with a control cabinet, a high-voltage power pack, a sludge tank and a water treatment system. The device is not aware of the problems of the prior art that are difficult to monitor automatically and the problem of the start-up of the electrostatic precipitator after washing with water.
In summary, in the prior art, the intelligent purification devices for air in tunnels have the problems of difficulty in automatic monitoring, slow start of the electrostatic precipitation device after washing, unstable current, and the like, and therefore, it is urgently needed to develop an intelligent purification device and method for air in tunnels, which can automatically monitor and start.
Disclosure of Invention
In view of the problems in the prior art, the invention provides an intelligent purification device and an intelligent purification method for air in a tunnel, which solve the problems that the conventional device for purifying air in the tunnel is difficult to automatically monitor, and an electrostatic precipitation device is unstable to start or slow to start after water washing, and can ensure the stable and reliable operation of the whole set of intelligent purification device.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides an intelligent purification device for air in a tunnel, wherein an electrostatic dust removal device, an automatic water washing system connected with the electrostatic dust removal device and a programmable logic controller are arranged in the intelligent purification device;
and a step-by-step starting module of the electrostatic dust removal device is arranged in the programmable logic controller and used for controlling the step-by-step starting of the electrostatic dust removal device.
The intelligent purification device combines a Programmable Logic Controller (PLC) and a tunnel purification device, automatically adjusts the operation of an automatic washing system by adopting the PLC according to the operation parameters of the electrostatic dust removal device, and can upload monitored data to a decentralized control system in real time, so that the stable operation of the whole intelligent purification device is guaranteed; the intelligent purification device can realize automatic washing, unattended operation, automatic and stable startup and closed-loop regulation of the electrostatic dust removal device, and obviously improves the intelligent degree of machine operation. The stepped starting module of the electrostatic dust removal device can ensure that the purification system can be quickly started and operated through stepped starting every time, and the traditional purification system still can be subjected to arc discharge even if being dried after being cleaned, and because the high-voltage operation needs certain electric clearance and creepage distance, the required electric clearance and creepage distance can be reduced through reducing the voltage, so that the electrostatic dust removal device can be quickly started.
Preferably, the intelligent purification device further comprises a Distributed Control System (DCS) connected with the programmable logic controller. The advantages of decentralized control function, centralized display operation, consideration of both division and autonomy and comprehensive coordination are adopted, and the accuracy of control is obviously improved by adopting a multi-layer hierarchical structure form.
Preferably, the intelligent purification device is provided with a pre-filtering device, an electrostatic dust collection device and a harmful gas removal device in sequence along the air flowing direction. In the invention, a pre-filtering device is preferably added before the electrostatic dust collector, so that the load of the electrostatic dust collector can be reduced.
Preferably, the electrostatic dust removal device comprises an electrostatic dust removal power supply system for supplying high voltage power to the electrostatic dust removal device.
The number of the ion boxes in the high-voltage power supply of the electrostatic dust removal power supply system is at least two columns, for example, 1 column, 2 columns, 3 columns, 4 columns or 5 columns, the number of the ion boxes in each column is at least 1, for example, 1, 2, 3, 4, 5, 6 or 8, and the like, and the number of the high-voltage power supplies is at least two, for example, 2, 3, 5, 10, 15 or 20. For example, there may be 6 ion boxes in a row, 1 high voltage power supply, so there are 15 high voltage power supplies in total, one high voltage power supply is broken, only one row is not efficient, the row of valves is closed, and then the rest of the high voltage power supplies may continue to be used.
Preferably, the electrostatic dust removal device further comprises an electrostatic dust removal access control system, so as to guarantee the safety of equipment maintenance personnel, and when the equipment has no operation authority during operation, the access control system cannot be opened; and the door is interlocked with the electrostatic dust removal device, and when the door is opened, the electrostatic dust removal device stops running.
Preferably, the electrostatic dust removal device further comprises an electrostatic dust removal air valve system, wherein the front air door and the rear air door of the electrostatic dust removal device are opened before the electrostatic dust removal device operates, and when the electrostatic dust removal device needs to be washed with water, the front air door and the rear air door of the electrostatic dust removal device are closed, so that the electrostatic dust removal device is guaranteed to be washed with water, no water drops are sprayed out, and the harmful gas removal device at the downstream is prevented from being wetted.
Preferably, the electrostatic precipitator plate in the electrostatic precipitator device is in a long strip shape, and two long sides of the electrostatic precipitator plate are in a curved shape, preferably in a wave shape.
Preferably, the cross section of the electrostatic dust removal plate is oval, namely the upper end, the lower end and the middle part are sharp and wide. Preferably, the shape reduces windage and reduces arcing.
Preferably, the electrostatic dust removal device comprises a bidirectional sheet type electrostatic dust collector, and specifically comprises two ionization parts and a dust collection part, wherein the two ionization parts are respectively located on the inner side and the outer side of the dust collection part.
Preferably, the ionization part is provided with an electrostatic precipitation plate.
Preferably, intelligence purifier still includes the dehydrating unit who links to each other with electrostatic precipitator device and harmful gas remove device respectively for reduce the humidity of the harmful gas remove device who removes nitrogen oxide, improve the life of removing nitrogen oxide's filter material in the device, ensure electrostatic precipitator device and harmful gas remove device's steady operation.
Preferably, the pre-filtering means comprises mechanical filtering means.
The mechanical filtering device can preliminarily remove large particles.
Preferably, the harmful gas removal device includes a nitrogen oxide removal device.
Preferably, the harmful gas removing device is of a bent type design. The bending type design increases the windward area through the folds, reduces the windward speed of the device, and ensures that the internal filter material can sufficiently adsorb harmful substances in the air.
The nitrogen oxide removal device of the present invention is preferably an activated carbon wall.
Preferably, the activated carbon is a columnar activated carbon.
Preferably, the intelligent purification device further comprises an air delivery device.
Preferably, the air delivery device is selected from an axial fan or a variable frequency fan. The axial flow fan can realize air delivery and can also dry the electrostatic dust removal device after being washed.
Preferably, the wind direction outlet of the axial flow fan is provided with a wind valve.
Preferably, the programmable logic controller is provided with an automatic washing system operation parameter control module.
Preferably, the operation parameter control module of the automatic washing system controls and adjusts the operation parameters of the automatic washing system according to the operation parameters of the electrostatic precipitation device.
Preferably, the automatic water washing system comprises a water storage part, a cleaning agent storage part, a material conveying system and a pipeline nozzle system connected with the electrostatic dust removal device. The pipeline nozzle system refers to a nozzle arranged opposite to an electrostatic dust removal plate in an electrostatic dust removal device and a pipeline system connected with the nozzle.
Preferably, the automatic water washing system further comprises an automatic water washing air valve system for controlling a valve and the like of the automatic water washing device.
Preferably, the material conveying system comprises a system consisting of a material conveying device and a pipeline opening and closing part.
The material conveying device is not particularly limited, and may be, for example, a pump, and the pipeline opening and closing member may be, for example, a valve.
Preferably, the programmable logic controller is connected with the material conveying system and adjusts and controls the material conveying device and the pipeline opening and closing part according to the operating parameters of the electrostatic dust removal device. The invention preferably adjusts the flow of the material conveying device and the opening and closing conditions of the pipeline opening and closing part according to the operation parameters of the electrostatic dust removal device, thereby realizing the effective control of the automatic water washing system and ensuring the stable and continuous operation of the electrostatic dust removal device.
Preferably, the intelligent purification device further comprises a wastewater treatment system connected with the automatic water washing system.
The wastewater treatment system can precipitate impurities, separate and recover polluted water, and effectively sterilize and disinfect the polluted water. Can automatically carry out wastewater treatment and recycling, so that the water can be recycled, and the environment is protected.
Preferably, the programmable logic controller comprises a remote debugging module for remote regulation.
The optimized programmable logic controller is also provided with a remote debugging module, so that data can be uploaded to a cloud platform in real time, and the operation condition of the whole system can be checked in different places.
Preferably, the programmable logic controller further comprises an alarm module for fault notification.
Preferably, the alarm module is in signal connection with the movable device.
The programmable logic controller can be preferably connected with a movable device, remotely monitors the programmable logic controller and remotely modifies and updates the program of the programmable logic controller, and can realize 24h remote maintenance and remote alarm processing.
Preferably, the intelligent purification device further comprises an air monitoring system arranged in the air flowing direction.
Preferably, the air monitoring system is connected with the programmable logic controller. The second key point of the invention is that the automatic water washing system is regulated and controlled according to the operation parameters of the electrostatic dust collection, and the operation parameters of the electrostatic dust collection and the operation parameters of the automatic water washing can be regulated and controlled in real time according to the air parameter condition monitored by the air monitoring system. The method comprises the steps that the running condition of electrostatic dust collection can be pre-judged according to the air condition, whether the electrostatic dust collection is in fault and needs to be replaced or not can be pre-judged, the time that a high-voltage power supply needs to be maintained can be pre-judged in advance, and the like; meanwhile, according to detailed air parameter data, the air at the outlet can be effectively ensured to be clean and pollution-free air, and the labor intensity is reduced.
Preferably, the air monitoring system includes a nitrogen oxide sensor, a carbon oxide sensor, a particulate matter sensor, and a weather station.
Preferably, the air monitoring system further comprises an ozone sensor.
Preferably, the nitrogen oxide sensor comprises at least two groups of light emitting components and light receiving components which are correspondingly arranged, and the light path formed by the light emitting components is perpendicular to the air flowing direction.
Preferably, the carbon oxide sensor includes a carbon monoxide sensor and a carbon dioxide sensor.
Preferably, the particle sensor comprises a light scattering laser photometric component.
Preferably, the weather station comprises a temperature sensing component, a pressure sensing component and a humidity sensing component.
Preferably, the weather station further comprises an ultrasonic sensing component.
Preferably, a display component is connected with the programmable logic controller. And a friendly human-computer interface is optimized, so that tunnel managers can conveniently and visually check the running condition of the whole system on a touch screen.
In a second aspect, the present invention provides an intelligent purification method for air in a tunnel, wherein the intelligent purification method is performed by using the intelligent purification apparatus of the first aspect.
The intelligent purification method provided by the invention is carried out by adopting the intelligent purification method of the first aspect, so that the efficiency and the automation degree of air purification are obviously improved, the electrostatic dust removal device does not need to be cleaned manually, the intelligent purification method is safer, and the stable operation of the device can be ensured.
Preferably, the intelligent purification method comprises:
the air is subjected to electrostatic treatment in the intelligent purification device through the electrostatic dust removal device, and the programmable logic controller controls and adjusts the operation parameters of the automatic water washing system according to the operation parameters and the air purification effect of the electrostatic dust removal device, so as to automatically wash the electrostatic dust removal device;
the electrostatic dust removal device after automatic water washing is started at a first voltage, the step-by-step starting module of the electrostatic dust removal device gradually increases the voltage to a second voltage along with the feedback information of the electrostatic dust removal device, and the electrostatic dust removal device is continuously operated.
Preferably, the automatic water washing system operation parameter control module is used for controlling the air purification effect according to data of front and back PM2.5, PM10 and the like, wherein the percentage of the difference between the concentrations of the front and back air PM2.5 and PM10 of the filter and the ratio of the dust concentration of the front and back air of the filter is represented by the following formula:
wherein C1 and C2 represent the PM2.5 concentration or the PM10 concentration before and after the filter, respectively.
Preferably, the air is sequentially subjected to pre-filtering treatment by the pre-filtering device, electrostatic dust removal treatment by the electrostatic dust removal device and harmful gas removal and purification by the harmful gas removal device from the inlet, and then discharged.
Preferably, the air purification effect is obtained by monitoring air parameters in real time by an air monitoring system.
Preferably, the air parameters include nitrogen oxide content, carbon oxide content, particulate matter content and meteorological conditions.
Preferably, the meteorological conditions include air pressure, air humidity and air temperature.
Preferably, the meteorological conditions further comprise flow velocity and wind direction.
Preferably, the operating parameter of the electrostatic precipitator device comprises a voltage value.
Preferably, the operating parameters of the automatic water washing system comprise water flow and/or cleaning agent flow.
Preferably, the automatic water washing includes: firstly, adding a cleaning agent to spray an ion box, then soaking in a delayed manner, then flushing the ion box, and then cleaning the electrostatic dust removal device; and the air valve is closed before and after the automatic washing, and the air valve is opened before the operation of the tunnel fan is finished by the automatic washing.
Preferably, the first voltage is 0.3 to 0.7 times the second voltage, for example, 0.3, 0.4, 0.5, 0.6, or 0.7 times.
The first voltage is preferably 0.3-0.7 times of the second voltage, so that the problem of short circuit with high voltage when the machine is started initially is solved, the stable operation of the electrostatic dust collection device during each starting can be guaranteed, water drops are gradually evaporated along with the operation of the fan and the electrostatic dust collection device, the voltage of the electrostatic dust collection device can be gradually increased, and the operation stability of the electrostatic dust collection device is improved.
Preferably, the feedback information includes a current magnitude.
When the electrostatic dust collection device is started after automatic cleaning, the electrostatic dust collection device is started at a first lower voltage, at the moment, water drops possibly cause the occurrence of a short circuit condition due to the water drops on the surface of the electrostatic dust collection device, an electric gap can be reduced, after the first voltage is started, the current is fed back to the step-by-step starting module of the electrostatic dust collection device, when the current is smaller than an alarm value, the voltage is increased, the current is fed back, and the steps are repeated until the voltage reaches a second voltage value, so that the electrostatic dust collection device can be stably operated.
Preferably, the second voltage value is a daily operation voltage value of the electrostatic dust removal device, which is not particularly limited.
Preferably, when the operating parameter or the air parameter of the electrostatic dust removal device exceeds a set value, the alarm module performs alarm processing. The invention does not specially limit the set value, and can carry out real-time adjustment according to different traffic flows and specific conditions of different tunnels.
Compared with the prior art, the invention has at least the following beneficial effects:
(1) the intelligent purification device for air in the tunnel can realize automatic cleaning, stable and reliable starting and operation of the electrostatic dust removal device, avoids the problem that the cleaning device needs to be started manually at regular time in the traditional purification device, simultaneously reduces the problem that the electrostatic dust removal device is slow to start or unstable in voltage when being started after being washed, reduces the labor cost, and improves the integral operation effect and safety of the electrostatic dust removal device;
(2) the intelligent purification method for air in the tunnel provided by the invention can realize 24-hour real-time monitoring and alarm processing, and ensures the safety of tunnel operation.
Drawings
Fig. 1 is a schematic diagram of the connection of a programmable logic controller in an intelligent purification device for air in a tunnel according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of the connection of the panel of the programmable logic controller in the intelligent purification device for air in a tunnel according to the embodiment of the invention.
In the figure: 1-a programmable logic controller; 11-programmable logic control panel; 2-remote debugging module; 3-an air monitoring system; 31-a nitrogen oxide sensor; 32-an ozone sensor; 33-a carbon monoxide sensor; 34-a carbon dioxide sensor; 35-a particulate matter sensor; 4-electrostatic dust removal power supply system; 41-a first high voltage supply unit; 42-a second high voltage supply unit; 5-electrostatic dust removal access control system; 6-a dehumidifying device; 7-automatic water washing system; 8-automatic water washing air valve system; 9-a wastewater treatment system; 10-electrostatic dust removal blast gate system.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The present invention is described in further detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
It should be understood by those skilled in the art that the present invention necessarily includes necessary piping, conventional valves and general pump equipment for achieving the complete process, but the above contents do not belong to the main inventive points of the present invention, and those skilled in the art can select the layout of the additional equipment based on the process flow and the equipment structure, and the present invention is not particularly limited to this.
As a specific embodiment of the present invention, an intelligent purification device for air in a tunnel is provided, in which an electrostatic dust removal device is disposed; the intelligent purification device also comprises an automatic water washing system 7 connected with the electrostatic dust removal device; the intelligent purification device also comprises a programmable logic controller 1 which is respectively connected with the automatic washing system 7 and the electrostatic dust removal device, and the programmable logic controller 1 is provided with an automatic washing system operation parameter control module;
and the operation parameter control module of the automatic washing system controls and adjusts the operation parameters of the automatic washing system according to the operation parameters of the electrostatic precipitation device.
And a step-by-step starting module of the electrostatic dust removal device for controlling the step-by-step starting of the electrostatic dust removal device is also arranged in the programmable logic controller.
The intelligent purification device is sequentially provided with a pre-filtering device, an electrostatic dust collection device and a harmful gas removal device along the air flowing direction; the intelligent purification device also comprises an air conveying device and a dehumidifying device 6; the dehumidifying device 6 is respectively connected with the electrostatic dust removing device and the harmful gas removing device; the electrostatic dust removal plate in the electrostatic dust removal device is in a strip shape, and two long edges of the electrostatic dust removal plate are in a curve shape, preferably in a wave shape. The cross section of the electrostatic dust removal plate is oval, namely the upper end and the lower end are sharp, and the middle is wide. Preferably, the shape reduces windage and reduces arcing. The electrostatic dust removal device comprises a bidirectional sheet type electrostatic dust collector, and specifically comprises two ionization parts and a dust collection part, wherein the two ionization parts are respectively positioned on the inner side and the outer side of the dust collection part. The ionization part is provided with an electrostatic dust removal plate.
The automatic water washing system 7 comprises a water storage part, a cleaning agent storage part, a material conveying system and a pipeline nozzle system connected with the electrostatic dust removal device; the automatic water washing system 7 also comprises an automatic water washing air valve system 8 which is used for controlling the valve; the material conveying system comprises a material conveying device and a system formed by pipeline opening and closing parts; the programmable logic controller 1 is connected with the material conveying system and adjusts and controls the material conveying device and the pipeline opening and closing part according to the operation parameters of the electrostatic dust removal device. The electrostatic dust removal system comprises an electrostatic dust removal power supply system 4, such as a first high-voltage power supply unit 41 and a second high-voltage power supply unit 42; the electrostatic dust removal system also comprises an electrostatic dust removal access control system 5 and an electrostatic dust removal air valve system 10 which are respectively connected with the programmable logic controller 1.
The intelligent purification device also comprises a wastewater treatment system 9 connected with the automatic washing system 7.
The programmable logic controller 1 comprises a remote debugging module 2 for remote regulation and control; the programmable logic controller 1 further comprises an alarm module for reminding faults; the alarm module is in signal connection with the movable equipment.
The intelligent purification device also comprises an air monitoring system 3 arranged in the air flowing direction; the air monitoring system 3 is connected with the programmable logic controller 1.
The air monitoring system 3 comprises a nitrogen oxide sensor 31, an ozone sensor 32, a carbon oxide sensor, a particulate matter sensor 35 and an meteorological station; the nitrogen oxide sensor 31 comprises at least two groups of light emitting components and light receiving components which are correspondingly arranged, and the light path formed by the light emitting components is vertical to the air flowing direction; the carbon oxide sensors include a carbon monoxide sensor 33 and a carbon dioxide sensor 34; the particle sensor 35 comprises a light scattering laser photometric component; the meteorological station comprises a temperature sensing component, a pressure sensing component and a humidity sensing component; the weather station also includes an ultrasonic sensing component.
Specifically, a schematic connection diagram of the programmable logic controller 1 is shown in fig. 1, wherein one end of a nitrogen oxide sensor 31, an ozone sensor 32, a carbon monoxide sensor 33, a carbon dioxide sensor 34 and a particulate matter sensor 35 in the air monitoring system 3 is used for detecting air (indicated by three points), and the other end is connected with the programmable logic controller 1; and the information of the air monitoring is transmitted to the programmable logic controller 1, the programmable logic controller 1 is also connected with a first high-voltage power supply unit 41 and a second high-voltage power supply unit 42 in the electrostatic dust removal power supply system 4, the electrostatic dust removal access control system 5, the dehumidifying device 6, the automatic washing system 7 and the automatic washing air valve system 8, the devices are adjusted and controlled according to air parameters at each position, automatic control is realized, and remote program updating and monitoring are realized by connecting the remote debugging module 2.
Specifically, a connection schematic diagram of the programmable logic control panel 11 is shown in fig. 2, and the air monitoring system 3, the electrostatic dust removal power supply system 4, the electrostatic dust removal access control system 5, the automatic water washing system 7, the automatic water washing air valve system 8, the wastewater treatment system 9 and the electrostatic dust removal air valve system 10 are connected with the programmable logic control panel 11 and input information to the programmable logic control panel, wherein the air monitoring system 3 feeds back air parameters, monitoring status and alarm conditions of air monitoring, and the electrostatic dust removal access control system 5 feeds back alarm conditions of the electrostatic dust removal device; the other devices feed back the operation parameters and the alarm condition of the device; the electrostatic dust removal power supply system 4, the automatic water washing system 7, the automatic water washing air valve system 8, the wastewater treatment system 9 and the electrostatic dust removal air valve system 10 simultaneously receive instructions sent by the programmable logic control panel 11 and send operation parameters to automatically operate air in the tunnel.
As one embodiment of the present invention, there is provided an intelligent purification method of air in a tunnel, the intelligent purification method including:
air is sequentially subjected to pre-filtering treatment by a pre-filtering device, electrostatic dust removal treatment by an electrostatic dust removal device and harmful gas removal and purification by a harmful gas removal device from an inlet, and then is discharged;
the programmable logic controller 1 controls and adjusts the operation parameters of the automatic washing system 7 according to the operation parameters and the air purification effect of the electrostatic dust removal device, and automatically washes the electrostatic dust removal device; the electrostatic dust removal device after automatic water washing is started at a first voltage, the voltage of the electrostatic dust removal device is gradually increased to a second voltage by the step-by-step starting module of the electrostatic dust removal device and the feedback information of the electrostatic dust removal device, and the electrostatic dust removal device is continuously operated; the first voltage is 0.3-0.7 times of the second voltage; the feedback information includes a current magnitude.
The air purification effect is obtained by monitoring air parameters in real time by the air monitoring system 3. The air parameters include nitrogen oxide content, carbon oxide content, particulate matter content, and meteorological conditions. The meteorological conditions include air pressure, air humidity, and air temperature. The meteorological conditions also include flow velocity and wind direction. The operating parameters of the electrostatic precipitation device include a voltage value. And when the operation parameters of the automatic washing system 7 comprise water flow and/or cleaning agent flow and the operation parameters or air parameters of the electrostatic dust removal device exceed a set value, the alarm module carries out alarm processing.
The following description will be specifically made.
Example 1
The embodiment provides an intelligent purification device for air in a tunnel, wherein an electrostatic dust removal device is arranged in the intelligent purification device; the intelligent purification device also comprises an automatic water washing system 7 connected with the electrostatic dust removal device; the intelligent purification device also comprises a programmable logic controller 1 which is respectively connected with the automatic washing system 7 and the electrostatic dust removal device, and the programmable logic controller 1 is provided with an automatic washing system operation parameter control module;
and the operation parameter control module of the automatic washing system controls and adjusts the operation parameters of the automatic washing system according to the operation parameters of the electrostatic precipitation device.
And a step-by-step starting module of the electrostatic dust removal device for controlling the step-by-step starting of the electrostatic dust removal device is also arranged in the programmable logic controller.
The intelligent purification device is sequentially provided with a pre-filtering device, an electrostatic dust collection device and a harmful gas removal device along the air flowing direction; the intelligent purification device also comprises an air conveying device and a dehumidifying device 6; the dehumidifying device 6 is respectively connected with the electrostatic dust removing device and the harmful gas removing device; the pre-filtering device comprises a mechanical filtering device, the harmful gas removing device comprises a nitrogen oxide removing device, active carbon is arranged in the device, namely the active carbon wall is formed, and the active carbon wall is in a bending type design. The bending type design increases the windward area through the folds, reduces the windward speed through the carbon wall, and ensures that the active carbon can sufficiently adsorb harmful substances in the air.
The automatic water washing system 7 comprises a water storage part, a cleaning agent storage part, a material conveying system and a pipeline nozzle system connected with the electrostatic dust removal device; the automatic water washing system 7 also comprises an automatic water washing air valve system 8 which is used for controlling the valve; the material conveying system comprises a material conveying device and a system formed by pipeline opening and closing parts; the programmable logic controller 1 is connected with the material conveying system and adjusts and controls the material conveying device and the pipeline opening and closing part according to the operation parameters of the electrostatic dust removal device. The electrostatic dust removal system comprises an electrostatic dust removal power supply system 4; the electrostatic dust removal system also comprises an electrostatic dust removal access control system 5 and an electrostatic dust removal air valve system 10 which are respectively connected with the programmable logic controller 1.
The intelligent purification device also comprises a wastewater treatment system 9 connected with the automatic washing system 7.
The programmable logic controller 1 comprises a remote debugging module 2 for remote regulation and control; the programmable logic controller 1 further comprises an alarm module for reminding faults; the alarm module is in signal connection with the movable equipment.
The intelligent purification device also comprises an air monitoring system 3 arranged in the air flowing direction; the air monitoring system 3 is connected with the programmable logic controller 1.
The air monitoring system 3 comprises a nitrogen oxide sensor 31, an ozone sensor 32, a carbon oxide sensor, a particulate matter sensor 35 and an meteorological station; the nitrogen oxide sensor 31 comprises at least two groups of light emitting components and light receiving components which are correspondingly arranged, and the light path formed by the light emitting components is vertical to the air flowing direction; the carbon oxide sensors include a carbon monoxide sensor 33 and a carbon dioxide sensor 34; the particle sensor 35 comprises a light scattering laser photometric component; the meteorological station comprises a temperature sensing component, a pressure sensing component and a humidity sensing component; the weather station also includes an ultrasonic sensing component.
Specifically, one end of a nitrogen oxide sensor 31, an ozone sensor 32, a carbon monoxide sensor 33, a carbon dioxide sensor 34 and a particulate matter sensor 35 in the air monitoring system 3 is externally used for detecting air, and the other end is connected with the programmable logic controller 1; and the information of the air monitoring is transmitted to the programmable logic controller 1, the programmable logic controller 1 is also connected with a first high-voltage power supply unit 41 and a second high-voltage power supply unit 42 in the electrostatic dust removal power supply system 4, the electrostatic dust removal access control system 5, the dehumidifying device 6, the automatic washing system 7 and the automatic washing air valve system 8, the devices are adjusted and controlled according to air parameters at each position, automatic control is realized, and remote program updating and monitoring are realized by connecting the remote debugging module 2.
Specifically, the system comprises an air monitoring system 3, an electrostatic dust removal power supply system 4, an electrostatic dust removal access control system 5, an automatic water washing system 7, an automatic water washing air valve system 8, a wastewater treatment system 9 and an electrostatic dust removal air valve system 10 which are connected with the programmable logic control panel 11 and input information to the programmable logic control panel, wherein the air monitoring system 3 feeds back air parameters, monitoring current situations and alarm situations of air monitoring, and the electrostatic dust removal access control system 5 feeds back alarm situations of an electrostatic dust removal device; the other devices feed back the operation parameters and the alarm condition of the device; the electrostatic dust removal power supply system 4, the automatic water washing system 7, the automatic water washing air valve system 8, the wastewater treatment system 9 and the electrostatic dust removal air valve system 10 simultaneously receive instructions sent by the programmable logic control panel 11 and send operation parameters to automatically operate air in the tunnel. And an air valve is arranged at an air direction outlet of the axial flow fan.
The embodiment also provides an intelligent purification method of air in a tunnel, which comprises the following steps:
air is sequentially subjected to pre-filtering treatment by a pre-filtering device, electrostatic dust removal treatment by an electrostatic dust removal device and harmful gas removal and purification by a harmful gas removal device from an inlet, and then is discharged;
the programmable logic controller 1 controls and adjusts the operation parameters of the automatic washing system 7 according to the operation parameters and the air purification effect of the electrostatic dust removal device, and automatically washes the electrostatic dust removal device; the electrostatic dust removal device after automatic water washing is started at a first voltage, the voltage of the electrostatic dust removal device is gradually increased to a second voltage by the step-by-step starting module of the electrostatic dust removal device and the feedback information of the electrostatic dust removal device, and the electrostatic dust removal device is continuously operated; the first voltage is 0.3-0.7 times of the second voltage; the feedback information includes a current magnitude. The electrostatic dust removal device after automatic water washing is started at a first voltage, the voltage is gradually increased to a second voltage by the electrostatic dust removal device step-by-step starting module and the feedback information of the electrostatic dust removal device, and the electrostatic dust removal device is continuously operated.
The air purification effect is obtained by monitoring air parameters in real time by the air monitoring system 3. The air parameters include nitrogen oxide content, carbon oxide content, particulate matter content, and meteorological conditions. The meteorological conditions include air pressure, air humidity, and air temperature. The meteorological conditions also include flow velocity and wind direction. The operating parameters of the electrostatic precipitation device include a voltage value. And when the operation parameters of the automatic washing system 7 comprise water flow and/or cleaning agent flow and the operation parameters or air parameters of the electrostatic dust removal device exceed a set value, the alarm module carries out alarm processing.
The automatic water washing system operation parameter control module is used for controlling the air purification effect according to data of front and back PM2.5, PM10 and the like, wherein the percentage of the difference between the concentrations of the front and back air PM2.5 and PM10 of the filter and the ratio of the dust concentration of the front and back air of the filter is represented by the following formula:
wherein C1 and C2 represent the PM2.5 concentration or the PM10 concentration before and after the filter, respectively.
The automatic water washing includes: firstly, adding a cleaning agent to spray an ion box, then soaking in a delayed manner, then flushing the ion box, and then cleaning the electrostatic dust removal device; and the air valve is closed before and after the automatic washing, and the air valve is opened before the operation of the tunnel fan is finished by the automatic washing.
This embodiment is when starting electrostatic precipitator device again after automatic cleaning, earlier with lower first voltage start-up, because there is the water droplet on electrostatic precipitator device surface this moment, the water droplet probably leads to the appearance of short circuit condition, the electric clearance can descend, after the first voltage starts, with electric current size feedback to electrostatic precipitator device substep start-up module, when the electric current size is less than the alarm value, improve voltage, the size of feedback electric current again, so circulate until voltage reaches the second voltage value, carry out electrostatic precipitator device's steady operation.
The intelligent purification device for air in the tunnel provided by the embodiment can realize stable and reliable operation of the electrostatic dust removal device, reduce the labor cost and improve the overall operation effect of the electrostatic dust removal device; the system can realize 24h real-time remote monitoring and program updating, and ensures the safety of tunnel operation.
Example 2
This embodiment provides an intelligent purifier of air in tunnel, except that intelligent purifier does not set up dehydrating unit and relation of connection, all the other is the same with embodiment 1.
Compared with the embodiment 2, the embodiment 1 is more beneficial to the stable operation of the electrostatic dust collection device and the harmful gas removal device by additionally arranging the dehumidification device.
Example 3
This embodiment provides an intelligent purification device of air in tunnel, except that the active carbon wall is not for the design of bending, all the other is the same with embodiment 1.
Compared with the embodiment 3, the embodiment 1 has the advantages that the windward area is increased, the windward speed passing through the carbon wall is reduced, and the active carbon can sufficiently adsorb harmful substances in the air.
Example 4
This embodiment provides an intelligent purifier of air in tunnel, except that first voltage is 0.2 times of second voltage, all the other is the same with embodiment 1.
Example 5
This embodiment provides an intelligent purifier of air in tunnel, except that first voltage is 0.8 times of second voltage, all the other is the same with embodiment 1.
Compared with the embodiments 4 to 5, the first voltage is 0.3 to 0.7 times of the second voltage, and the first voltage is 0.2 and 0.8 times in the embodiments 4 to 5, respectively, wherein the embodiment 1 can be started with the first voltage after being washed with water, the current is moderate in size during starting, the dangerous situations such as short circuit and the like do not occur, the voltage is stably increased to the second voltage along with the running of time, the current is stable in the period, and the alarm situation does not occur; on the other hand, in embodiment 4, since the first voltage is too low, the starting time is more than 2 times that in embodiment 1, the starting is slow, and when embodiment 5 is started, the current alarm approaching stop device appears, so that the safety performance is remarkably reduced.
Comparative example 1
This comparative example provides a purification apparatus for air in a tunnel, which is the same as in example 1 except that an automatic water washing system and an automatic water washing blast gate system are not provided and their connection relationship is not established.
Compared with the comparative example 1, the embodiment 1 can realize automatic water washing of the electrostatic dust removal device according to the combination of the air monitoring data and the operation data of electrostatic dust removal, while the comparative example 1 can only realize manual washing according to the operation data of the dust removal efficiency of electrostatic dust removal, and the labor cost is high.
Comparative example 2
The comparative example provides a purification apparatus for air in a tunnel, which is the same as in example 1 except that the purification apparatus is not provided with a step-by-step starting module of an electrostatic dust removal apparatus and the connection relationship thereof.
Compared with the comparative example 2, the embodiment 1 can stably start the electrostatic dust removal device when water drops still exist on the surface of the electrostatic dust removal device, so that the running time of the electrostatic dust removal device is prolonged, and the short circuit condition is reduced, while the comparative example 2 can only start the electrostatic dust removal device after the electrostatic dust removal device is dried for a long time or cause the frequent short circuit service life of the electrostatic dust removal device to be obviously reduced.
In conclusion, the intelligent purification device and the intelligent purification method for air in the tunnel can realize continuous purification of air and ensure the stability and reliability of the whole system by automatically controlling the electrostatic dust removal device and the automatic water washing system; remote regulation and control and program updating can be realized, and 24h real-time monitoring can be guaranteed.
The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. An intelligent purification device for air in a tunnel is characterized in that an electrostatic dust removal device, an automatic water washing system connected with the electrostatic dust removal device and a programmable logic controller are arranged in the intelligent purification device;
and a step-by-step starting module of the electrostatic dust removal device is arranged in the programmable logic controller and used for controlling the step-by-step starting of the electrostatic dust removal device.
2. The intelligent purification device according to claim 1, wherein the intelligent purification device is provided with a pre-filtering device, an electrostatic dust removal device and a harmful gas removal device in sequence along the air flow direction;
preferably, the intelligent purification device further comprises an air delivery device.
3. The intelligent purification device according to claim 1 or 2, wherein the programmable logic controller is provided with an automatic washing system operation parameter control module;
preferably, the operation parameter control module of the automatic washing system controls and adjusts the operation parameters of the automatic washing system according to the operation parameters of the electrostatic precipitation device;
preferably, the automatic water washing system comprises a water storage part, a cleaning agent storage part, a material conveying system and a pipeline nozzle system connected with the electrostatic dust removal device;
preferably, the material conveying system comprises a system consisting of a material conveying device and a pipeline opening and closing part;
preferably, the programmable logic controller is connected with the material conveying system and adjusts and controls the material conveying device and the pipeline opening and closing part according to the operation parameters of the electrostatic dust removal device;
preferably, the intelligent purification device further comprises a wastewater treatment system connected with the automatic water washing system.
4. The intelligent purification device of any one of claims 1 to 3, wherein the programmable logic controller comprises a remote debugging module for remote regulation;
preferably, the programmable logic controller further comprises an alarm module for fault reminding;
preferably, the alarm module is in signal connection with the movable device.
5. The intelligent purification device according to any one of claims 1 to 4, further comprising an air monitoring system disposed in the air flow direction;
preferably, the air monitoring system is connected with the programmable logic controller.
6. The intelligent purification device of any one of claims 1 to 5, wherein the air monitoring system comprises a nitrogen oxide sensor, a carbon oxide sensor, an ozone sensor, a particulate matter sensor and a weather station;
preferably, the nitrogen oxide sensor comprises at least two groups of light emitting components and light receiving components which are correspondingly arranged, and the light paths formed by the light emitting components are vertical to the air flowing direction;
preferably, the carbon oxide sensor comprises a carbon monoxide sensor and a carbon dioxide sensor;
preferably, the particle sensor comprises a light scattering laser photometric component;
preferably, the weather station comprises a temperature sensing component, a pressure sensing component and a humidity sensing component;
preferably, the weather station further comprises an ultrasonic sensing component.
7. An intelligent purification method for air in a tunnel, characterized in that the intelligent purification method is carried out by using the intelligent purification device of any one of claims 1 to 6.
8. The intelligent scrubbing method of claim 7, wherein said intelligent scrubbing method comprises:
the air is subjected to electrostatic treatment in the intelligent purification device through the electrostatic dust removal device, and the programmable logic controller controls and adjusts the operation parameters of the automatic water washing system according to the operation parameters and the air purification effect of the electrostatic dust removal device, so as to automatically wash the electrostatic dust removal device;
the electrostatic dust removal device after automatic water washing is started at a first voltage, the step-by-step starting module of the electrostatic dust removal device gradually increases the voltage to a second voltage along with the feedback information of the electrostatic dust removal device, and the electrostatic dust removal device is continuously operated.
9. The intelligent purification method according to claim 7 or 8, wherein the air is discharged from the inlet after being sequentially subjected to the pre-filtering treatment by the pre-filtering device, the electrostatic dust removal treatment by the electrostatic dust removal device, and the harmful gas removal purification by the harmful gas removal device;
preferably, the air purification effect is obtained by monitoring air parameters in real time by an air monitoring system;
preferably, the air parameters include nitrogen oxide content, carbon oxide content, ozone sensors, particulate matter content, and meteorological conditions;
preferably, the meteorological conditions include air pressure, air humidity and air temperature;
preferably, the meteorological conditions further comprise a flow velocity and a wind direction;
preferably, the operating parameter of the electrostatic dust removal device comprises a voltage value;
preferably, the operating parameters of the automatic water washing system comprise water flow and/or cleaning agent flow;
preferably, the first voltage is 0.3-0.7 times of the second voltage;
preferably, the feedback information includes a current magnitude.
10. The intelligent purification method according to any one of claims 7 to 9, wherein when the operating parameters or air parameters of the electrostatic dust removal device exceed a set value, an alarm module performs alarm processing.
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| CN202111294702.1A CN114017883A (en) | 2021-11-03 | 2021-11-03 | Intelligent purification device and method for air in tunnel |
| CN202211338920.5A CN115451505A (en) | 2021-11-03 | 2022-10-28 | Intelligent purification device and method for air in tunnel |
| CN202222862178.XU CN218722112U (en) | 2021-11-03 | 2022-10-28 | Intelligent purification device for air in tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115282708A (en) * | 2022-07-29 | 2022-11-04 | 中铁第四勘察设计院集团有限公司 | Tunnel air purification system and method |
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| CN115451505A (en) | 2022-12-09 |
| CN218722112U (en) | 2023-03-24 |
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