Tunnel air purifying and cooling vehicle, purifying and cooling system and control method of purifying and cooling system

Abstract

The invention relates to a tunnel air purifying and cooling vehicle, a purifying and cooling system and a control method thereof.The purifying and cooling vehicle comprises an electric vehicle body part, an air treatment part, a cold source part and a power supply and distribution control part, the cold source part comprises a cold storage module internally provided with cold storage ice balls, and the output end of the cold storage module is connected with the input end of a heat exchange coil through an ethylene glycol pipeline; the output end of the heat exchange coil pipe is connected with the input end of the cold storage module through an ethylene glycol pipeline, high-temperature ethylene glycol flows through the cold storage module and exchanges heat with the cold storage ice balls to become low-temperature ethylene glycol to be recycled, and a bypass pipe is arranged between the ethylene glycol pipeline at the output end of the heat exchange coil pipe and the ethylene glycol pipeline at the output end of the cold storage module. The purifying and cooling system adopts an integrated design that the purifying and cooling vehicle works cooperatively with an environment monitoring sensor, a camera, an ice making unit and a charging pile. Efficient purification and temperature adjustment of polluted air in the tunnel are achieved, and the purification and cooling vehicle is intelligently controlled according to the air quality and the traffic state.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tunnel air environment treatment and environmental protection equipment, and particularly relates to a tunnel air purification and cooling vehicle, a purification and cooling system and a control method thereof. BACKGROUND

[0002] With the acceleration of urbanization, in order to alleviate the ground traffic pressure, underground tunnels gradually become an important channel for urban traffic. However, the tunnel space is a semi-closed structure, and the internal air is difficult to fully circulate with the external environment. A large amount of exhaust pollutants and waste heat emitted during vehicle driving continuously accumulate, resulting in a decrease in air quality and an increase in temperature in the tunnel, especially in the summer peak period, which easily causes over-temperature and low visibility, seriously affecting driving safety, tunnel traffic efficiency and personnel comfort. At present, ventilation and air exchange methods are generally used to treat tunnel air pollution and temperature rise. The basic principle is to introduce external fresh air by mechanical ventilation equipment to reduce the concentration of pollutants and the temperature of the tunnel by physical dilution. This method requires large ventilation equipment according to the most unfavorable conditions, resulting in high initial construction investment. However, in the later actual operation of the traffic valley condition, the running effect, running energy consumption and investment utilization rate are not ideal.

[0003] However, the existing ventilation and air exchange method cannot substantially remove pollutants, but only dilutes them by diffusion. The polluted gas still needs to be discharged through the hole or high wind tower, and the pollution of the surrounding atmospheric environment will still occur after the diffusion and settlement of the pollutants, causing secondary pollution hazards to the surrounding residents. In addition, with the progress of tunnel ventilation technology, some tunnel projects have tried to use centralized purification machine rooms, but the initial investment of centralized purification machine rooms is high, the land occupation is large, and the operation cost is high in the later period, and the maintenance is difficult, which does not have the conditions for large-scale popularization and application. Although there are air purification vehicles in existing equipment, the main principle is to cool and suppress dust by spraying water mist, which is suitable for urban ground roads or square environments, and cannot be applied to tunnels due to the influence of water mist on visibility. Therefore, new solutions to tunnel temperature rise and exhaust pollution problems need to be further proposed to solve the problems in the field of tunnel air environment treatment technology. SUMMARY

[0004] In view of the above problems, the present application provides a tunnel air purification and cooling vehicle, a purification and cooling system and a control method thereof, which aims to realize efficient purification and temperature regulation of polluted air in the tunnel, and intelligently control the travel path of the purification and cooling vehicle and the working state of the purification and cooling unit according to the air quality and traffic state.

[0005] To achieve the above purpose, the technical scheme of the present application is as follows:

[0006] The tunnel air purification and cooling vehicle comprises an electric vehicle body, an air treatment part, a cold source part and a power supply and distribution control part, the air treatment part comprises a bug screen, a coarse filter section, an electrostatic dust removal section, an electrostatic dust removal automatic cleaning nozzle, an EC fan wall, a surface cooler section, a water blocking section and an air outlet shutter in sequence according to an air flow path, the surface cooler section is provided with a heat exchange coil, and the heat exchange medium in the heat exchange coil is ethylene glycol; the cold source part comprises a cold storage module provided with cold storage ice balls, the output end of the cold storage module is connected with the input end of the heat exchange coil through an ethylene glycol pipeline, the output end of the heat exchange coil is connected with the input end of the cold storage module through an ethylene glycol pipeline, high-temperature ethylene glycol is changed into low-temperature ethylene glycol for recycling after heat exchange with the cold storage ice balls, a bypass pipe is arranged between the ethylene glycol pipelines of the output end of the heat exchange coil and the output end of the cold storage module, an ethylene glycol high-temperature pump and a three-way regulating valve are arranged on the bypass pipe, and the high-temperature ethylene glycol is partially bypassed to adjust the liquid supply temperature; the power supply and distribution control part comprises a battery pack, a power distribution box and a control box, and the power distribution box is used for supplying power to the purification and cooling equipment.

[0007] Preferably, the input end and the output end of the cold storage module are provided with electromagnetic valves and cold storage ethylene glycol interfaces; the cold storage module comprises a plurality of parallel cold storage units, the input end of each cold storage unit is provided with a valve and an ethylene glycol low-temperature pump, and the output end is provided with a check valve.

[0008] Preferably, the automatic cleaning part comprises a water collecting tank, a flushing pump, a flushing water collecting tray, a condensation water collecting tray, a water pipe, a drain and a water inlet, the flushing pump is arranged in the water collecting tank and used for pumping water to the electrostatic dust removal automatic cleaning nozzle, the electrostatic dust removal automatic cleaning nozzle sprays water towards the electrostatic dust removal section, the flushing water collecting tray is arranged below the electrostatic dust removal section and used for collecting flushing water, the condensation water collecting tray is arranged below the surface cooler section and the water blocking section and used for collecting air condensation water, and the condensation water collecting tray is communicated with the water collecting tank, the water inlet is connected with the upper part of the water collecting tank through the water pipe, the bottom of the water collecting tank is connected with the drain through the water pipe, and a drain valve is arranged on the water pipe connected with the drain of the flushing water collecting tray.

[0009] The application further discloses a tunnel air purification and cooling system, which comprises the above-mentioned purification and cooling vehicle, an environment monitoring sensor, a camera, an ice maker set and a charging pile, the environment monitoring sensor is arranged at the top of the tunnel, the ice maker set and the charging pile are arranged outside the tunnel, the purification and cooling vehicle is parked near the ice maker set and the charging pile at night, low-price power in a low valley period of the night power grid is used to charge the battery pack of the vehicle body and the power supply and distribution control part, the ice maker set is used to make ice, and the ice is stored in the cold storage module.

[0010] Preferably, the tunnel comprises a tunnel spare space, and the tunnel spare space of the tunnel temporary parking area is used for parking the purification and cooling vehicle, and the purification and cooling vehicle can perform purification and cooling operation on the section.

[0011] Preferably, the control box automatically controls the travel path of the purification and cooling vehicle and the working state of the purification and cooling unit according to the air pollution index, air temperature and vehicle density information collected by the environmental monitoring sensor and the camera.

[0012] In another aspect, the application also discloses a control method based on the tunnel air purification and cooling system.

[0013] S1, the purification and cooling vehicle is in the tunnel spare space, and a static purification operation mode is started;

[0014] S2, the air pollution index and air temperature are collected by the environmental monitoring sensor arranged on the top of the tunnel, and the vehicle density information is collected by the camera;

[0015] S3, the air pollution index, air temperature and vehicle density information are sent to the control box of the purification and cooling vehicle;

[0016] S4, the control box comprehensively judges whether the current tunnel needs to start the purification operation based on the air pollution index, air temperature and vehicle density information, and determines the travel path of the purification and cooling vehicle and the working state of the purification and cooling unit.

[0017] Preferably, the cold storage module is quickly detachable, in step S1, in summer high temperature day, the ice storage and cooling operation is performed in the cold storage module, and in other seasons, the tunnel temperature does not exceed the period, the cold storage module does not need to store ice or the electric vehicle body does not carry the cold storage module.

[0018] Preferably, in step S4, when the air pollution index collected by the environmental monitoring sensor exceeds the first preset concentration value or the air temperature exceeds the first preset temperature value, and the vehicle density information collected by the camera shows that the vehicle density in the tunnel is greater than the first preset vehicle density value, it is judged that there is a purification and cooling demand and traffic congestion, and the purification and cooling vehicle is controlled to enter the tunnel to perform operation.

[0019] Preferably, in step S4, when the air pollution index collected by the environmental monitoring sensor exceeds the second preset concentration value or the air temperature exceeds the second preset temperature value or the vehicle density information collected by the camera shows that the vehicle density in the tunnel is greater than the second preset vehicle density value, it is judged that the purification and cooling demand is increased or the traffic is seriously congested, and the purification and cooling vehicle is controlled to enter the tunnel to perform operation.

[0020] Compared with the prior art, the application has the following advantages:

[0021] This invention provides a tunnel air purification and cooling vehicle, a purification and cooling system, and a control method thereof. The tunnel air purification and cooling vehicle integrates air purification, cooling, and automatic cleaning functions, achieving coordinated control of air pollutant removal and temperature regulation within the tunnel, effectively improving the tunnel traffic environment. The vehicle employs an ethylene glycol cold storage system and a multi-stage filtration and dust removal structure, offering advantages such as high efficiency and energy saving, modular structure, and flexible operation. It can dynamically switch between "purification," "purification + cooling," and "cleaning" modes according to the tunnel environment, flexibly addressing air pollution and temperature rise issues within the tunnel. The purification and cooling system uses the mobile purification and cooling vehicle as its core unit, in conjunction with charging piles and ice-making units installed outside the tunnel, as well as environmental monitoring sensors and cameras deployed inside the tunnel. This enables real-time collection and intelligent analysis of air pollution indicators, air temperature, and vehicle density information, dynamically determining purification needs and autonomously planning operating paths and status. During off-peak electricity hours at night, the purification and cooling vehicle automatically completes energy storage and ice storage operations, significantly reducing the tunnel's daytime peak electricity load and achieving peak shaving and valley filling for the power system. Furthermore, the present invention adopts a mobile structural design, allowing the purification and cooling vehicle to be parked in the spare space of the tunnel when no mobile operation is required. This enables centralized purification function in a stationary state, thereby effectively reducing the civil engineering investment and initial equipment configuration requirements of the ventilation system, and improving the overall economy, adaptability and intelligence level of the system. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the tunnel air purification and cooling system according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the purification and cooling vehicle according to an embodiment of the present invention.

[0024] Figure 3 This is a flowchart of the control method for the tunnel air purification and cooling system according to an embodiment of the present invention.

[0025] Explanation of reference signs: 1 - insect screen; 2 - rough filter section; 3 - electrostatic dust removal section; 4 - electrostatic dust removal automatic cleaning nozzle; 5 - EC fan wall; 6 - surface cooler section; 6.1 - heat exchange coil; 7 - water retaining section; 8 - air outlet shutter; 9 - cold storage module; 9.1 - ethylene glycol; 9.2 - cold storage ice ball; 10 - ethylene glycol pipeline; 11 - ethylene glycol high temperature pump; 12 - ethylene glycol low temperature pump; 13 - three-way regulating valve; 14 - check valve; 15 - electromagnetic valve; 16 - cold storage ethylene glycol interface; 17 - water collecting tank; 18 - flushing pump; 19 - flushing water collecting tray; 20 - condensation water collecting tray; 21 - water pipe; 22 - drain valve; 23 - drain outlet; 24 - water inlet; 25 - distribution box; 26 - control box; 27 - purification and cooling vehicle; 28 - environmental monitoring sensor; 29 - camera; 30 - ice maker unit; 31 - charging pile; 32 - tunnel; 33 - tunnel surplus space. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art belong to the present application.

[0027] In addition, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.

[0028] Please refer to Figures 1-2This embodiment discloses a tunnel air purification and cooling vehicle, including an electric body, an air handling unit, a cold source unit, and a power supply and control unit. The air handling unit, arranged according to the airflow path, includes an insect-proof net 1, a coarse filter section 2, an electrostatic dust removal section 3, an electrostatic dust removal automatic cleaning nozzle 4, an EC fan wall 5, a surface cooler section 6, a water-blocking section 7, and an air outlet louver 8. The insect-proof net 1 is used to block larger particulate impurities, preventing insects or other foreign objects from entering the system; the coarse filter section 2 further filters larger dust particles in the air, improving the working efficiency of the subsequent dust removal section; the electrostatic dust removal section 3 uses the principle of electrostatic adsorption to remove fine particulate matter in the air, effectively improving air quality; the electrostatic dust removal automatic cleaning nozzle 4 faces the electrostatic dust removal... The dust removal section 3 is sprayed with cleaning water to automatically wash away the dust accumulated on the surface of the electrostatic precipitator section 3 after the system has been running for a period of time, maintaining the working effect of the equipment; the EC fan wall 5 is used to drive the airflow, so that the air flows through each treatment section along a predetermined direction, while ensuring high air volume and energy saving effect; the surface cooler section 6 is equipped with heat exchange coils 6.1, which are filled with ethylene glycol 9.1 as the heat exchange medium. Ethylene glycol 9.1 has good heat exchange performance and antifreeze effect, and is used to cool down the high temperature air; the water baffle section 7 is used to remove condensate droplets carried in the air after passing through the surface cooler section 6, preventing condensate from entering the tunnel environment; the air outlet louvers 8 are used to adjust and direct the exhaust airflow, while also serving an aesthetic and protective function.

[0029] The cold source section includes a cold storage module 9 with a built-in cold storage ice ball 9.2. The cold storage ice ball 9.2 is made by an ice maker and has energy storage and heat exchange functions. It can pre-cool during off-peak electricity periods to reduce system operating energy consumption. The output end of the cold storage module 9 is connected to the input end of the heat exchange coil 6.1 through an ethylene glycol pipe 10. The ethylene glycol pipe 10 serves as a fluid channel for transporting ethylene glycol 9.1 to complete the circulating heat exchange process. The output end of the heat exchange coil 6.1 and the input end of the cold storage module 9 are connected through the ethylene glycol pipe 10 to form a closed loop. The high-temperature ethylene glycol 9.1 flows through the cold storage module 9 and exchanges heat with the cold storage ice ball 9.2 to become low-temperature ethylene glycol 9.1. The system is cyclically used to achieve a cyclic cooling process, improving the overall efficiency of the system. A bypass pipe is installed between the output end of the heat exchange coil 6.1 and the output end of the cold storage module 9 via the ethylene glycol pipe 10. The bypass pipe is equipped with an ethylene glycol high-temperature pump 11 and a three-way regulating valve 13. The ethylene glycol high-temperature pump 11 provides power to drive a portion of the high-temperature ethylene glycol 9.1 to bypass the cold storage module 9 and directly mix with the low-temperature ethylene glycol 9.1. The three-way regulating valve 13 is used to adjust the bypass ratio, so as to partially bypass the high-temperature ethylene glycol 9.1 to adjust the supply temperature, balance the temperature of ethylene glycol 9.1 when entering and exiting the heat exchange coil 6.1, avoid excess or insufficient cooling capacity, and improve the energy efficiency ratio.

[0030] The power supply and distribution control part includes a battery pack, a power distribution box 25 and a control box 26. The power distribution box 25 is used for power supply and distribution for the purification and cooling equipment, including a fan, an electric pump, an actuator and the like, and ensures safe and stable operation of the system through unified power supply and distribution management. The control box 26 is used for intelligent control of the entire purification and cooling vehicle, including switching of the working state of the air treatment part and the cold source part, temperature adjustment, equipment start-stop and the like, and improves the intelligent level and use convenience of the equipment.

[0031] Further, the input end and the output end of the cold storage module 9 are provided with electromagnetic valves 15 and cold storage ethylene glycol interfaces 16. The electromagnetic valves 15 are used for controlling the flow and closing of the ethylene glycol 9.1, so as to realize automatic switching and isolation operation of the ethylene glycol 9.1 under different working conditions, and avoid leakage or backflow of the working medium in the system under a non-working state. The cold storage ethylene glycol interfaces 16 are used for connection with external equipment, so as to facilitate the replenishment or discharge maintenance operation of the ethylene glycol 9.1 when needed, and improve the flexibility and operation convenience of the overall system.

[0032] The cold storage module 9 includes a plurality of parallel cold storage units. The input end of each cold storage unit is provided with a valve and an ethylene glycol low-temperature pump 12. The ethylene glycol low-temperature pump 12 is used for driving the low-temperature ethylene glycol 9.1 to circulate and flow, and realizes individual control of the flow of each cold storage unit through the valve, so as to flexibly start and stop different numbers of cold storage units according to the cold quantity demand, effectively improve the adjustment accuracy and energy efficiency utilization rate of the cold storage system. The output end of each cold storage unit is provided with a check valve 14. The check valve 14 is used for preventing backflow of the ethylene glycol 9.1, ensuring consistency of the circulation direction of the system, avoiding working medium backflow and system failure caused by pressure fluctuation, and improving the safety and stability of operation.

[0033] The embodiment also comprises an automatic cleaning part, which comprises a water collecting tank 17, a flushing pump 18, a flushing water collecting tray 19, a condensate water collecting tray 20, a water pipe 21, a drain 23 and a water inlet 24, and is used to realize automatic flushing of the electrostatic dust removal section 3 and collection and recycling of condensate water, reduce the frequency of equipment maintenance and external water demand, and improve the comprehensive operation efficiency of the system. The flushing pump 18 is located in the water collecting tank 17 and is used to pump water to the electrostatic dust removal automatic cleaning nozzle 4. The flushing pump 18 is installed in a submerged manner, can directly pump water in the water collecting tank 17, ensures the simplicity and reliability of the flushing system, the electrostatic dust removal automatic cleaning nozzle 4 sprays water towards the electrostatic dust removal section 3, removes dust and pollutants on the surface of the electrostatic dust removal section 3 by water flow impact, and maintains the electrostatic dust removal effect. The flushing water collecting tray 19 is arranged below the electrostatic dust removal section 3 and is used to collect flushing water. The flushing water finally flows to the drain 23. The condensate water collecting tray 20 is arranged below the air cooler section 6 and the water blocking section 7 and is used to collect air condensate water and communicate with the water collecting tank 17, so that the condensate water generated by the system in summer cooling operation can be directly used as the flushing water source of the electrostatic dust removal section 3, without or with reduced external water supply, and resources are saved. The water inlet 24 is connected to the upper part of the water collecting tank 17 through the water pipe 21 and is used to supplement water externally when the condensate water is insufficient. The bottom of the water collecting tank 17 is communicated with the drain 23 through the water pipe 21 and is used to discharge waste water or excessive water in the system, preventing abnormal rise of the water level in the water collecting tank 17. The water pipe 21 connected to the drain 23 is provided with a drain valve 22 on the flushing water collecting tray 19. The drain valve 22 is used to control the drainage state. When necessary, closing the drain valve 22 can temporarily store water in the flushing water collecting tray 19, facilitating system maintenance and maintenance operation.

[0034] In the present embodiment, the purification and cooling vehicle 27 has multiple working modes. When performing the "purification + cooling" mode, the electrostatic precipitation section 3, the EC fan wall 5, and the ethylene glycol low-temperature pump 12 are operated. The high-temperature polluted air in the tunnel sequentially passes through the insect screen 1, the coarse filter section 2, the electrostatic precipitation section 3, the EC fan wall 5, the surface cooler section 6, the water blocking section 7, and the air outlet shutter 8. The air is purified when passing through the coarse filter section 2 and the electrostatic precipitation section 3. The clean air is cooled by the low-temperature ethylene glycol 9.1 in the heat exchange coil 6.1 of the surface cooler section 6. The clean cold air is sent into the tunnel 32. The ethylene glycol 9.1 is driven by the ethylene glycol low-temperature pump 12, exchanges heat with the cold storage ice ball 9.2, and then enters the heat exchange coil 6.1 of the surface cooler section 6 to exchange heat with the high-temperature air. The high-temperature ethylene glycol 9.1 after heat exchange is circulated back to the cold storage module 9 to be cooled. To control the temperature of the ethylene glycol 9.1 in the heat exchange coil 6.1, the high-temperature ethylene glycol 9.1 is partially bypassed through the ethylene glycol high-temperature pump 11 and the three-way regulating valve 13 on the bypass pipe, and then mixed with the low-temperature ethylene glycol 9.1 and sent into the heat exchange coil 6.1. When the purification and cooling vehicle 27 performs the "purification" mode, the electrostatic precipitation section 3 and the EC fan wall 5 are operated, and the surface cooler section 6 does not cool. The high-temperature polluted air in the tunnel sequentially passes through the insect screen 1, the coarse filter section 2, the electrostatic precipitation section 3, the EC fan wall 5, the surface cooler section 6, the water blocking section 7, and the air outlet shutter 8. The air is purified when passing through the coarse filter section 2 and the electrostatic precipitation section 3. The clean air is sent into the tunnel 32. When the purification and cooling vehicle 27 performs the "cleaning" mode, dust is deposited on the surface of the equipment after the electrostatic precipitation section 3 works for a period of time. At this time, the flushing pump 18 is started at the skylight time. The water in the water collecting tank 17 is sprayed out through the electrostatic precipitation automatic cleaning nozzle 4, flushes the dust in the electrostatic precipitation section 3, and the flushed sewage is collected through the flushing water collecting disc 19 and then discharged through the drain 23. In summer, the purification and cooling vehicle 27 performs the "purification + cooling" mode. At this time, more condensed water can be collected for cleaning, without the need for external water supply. In other seasons, clean water can be supplemented through the water inlet 24.

[0035] The tunnel air purification and cooling system as a whole takes the purification and cooling vehicle 27 as the core, realizes intelligent regulation and control and efficient and energy-saving operation of the air quality in the tunnel through the configuration of the environment monitoring and energy supply unit. The environment monitoring sensor 28 is located at the top of the tunnel 32, and the environment monitoring sensor 28 is used to collect air pollution indicators and air temperature inside the tunnel 32 in real time, for example, PM2.5, PM10 and other harmful gas concentration information, to provide basic data support for the control system. The camera 29 is used to obtain the vehicle density information of the tunnel, and can identify traffic indicators such as vehicle speed, vehicle distance and vehicle density in the tunnel 32, which is used as auxiliary basis for judging the congestion degree and pollution accumulation trend, and further provides auxiliary basis for judging whether the purification and cooling vehicle 27 enters the tunnel 32 to perform work. The ice-making unit 30 and the charging pile 31 are located outside the tunnel 32, the ice-making unit 30 is used to prepare the cold storage ice ball 9.2 during the non-working period, and the charging pile 31 is used to charge the battery pack of the power supply and control part inside the purification and cooling vehicle 27, so as to ensure that the purification and cooling vehicle 27 has independent power supply and continuous working capacity. The purification and cooling vehicle 27 is parked near the ice-making unit 30 and the charging pile 31 at night, uses low-price power during the valley period of the night power grid to charge the battery pack of the power supply and control part, and at the same time, the ice-making unit is used to make ice, that is, water is made into cold storage ice ball 9.2 and stored in the cold storage module 9. Through such energy utilization strategy, the peak load shifting of the power system is effectively realized, the operation cost of the tunnel 32 ventilation and cooling system is reduced, and at the same time, the purification and cooling vehicle 27 has sufficient cold storage and power storage during the daytime peak period, so as to improve the overall operation efficiency and economy of the system.

[0036] In the embodiment, the tunnel 32 includes a tunnel surplus space 33, and the tunnel surplus space 33 of the temporary parking area of the tunnel is used for parking the purification and cooling vehicle 27. The purification and cooling vehicle 27 can perform purification and cooling work in this section, and when the purification and cooling vehicle 27 is not in the driving purification state, it can enter this area to realize static purification or standby work. At this time, the tunnel surplus space 33 is equivalent to a centralized purification machine room. The control box 26 automatically controls the travel path of the purification and cooling vehicle 27 and the working state of the purification and cooling unit according to the air pollution indicators, air temperature and vehicle density information collected by the environment monitoring sensor 28 and the camera 29, so as to realize the purification and cooling strategy of on-demand response, energy saving and high efficiency, and improve the intelligent level and adaptability of the system.

[0037] Please refer to Figure 3 On the other hand, another embodiment of the present application also discloses a control method based on the above-mentioned tunnel air purification and cooling system, comprising the following steps:

[0038] S1, the purification and cooling vehicle 27 is in the tunnel excess space 33, and a static purification operation mode is started;

[0039] In this step, the purification and cooling vehicle 27 is in the tunnel excess space 33, that is, the purification and cooling vehicle 27 is not in a mobile operation state, and the polluted air in the tunnel in this section enters the vehicle-mounted purification system, and after the air purification and cooling treatment are completed by using the coarse filter section 2, the electrostatic precipitation section 3, the EC fan wall 5 and the surface cooler section 6, the clean air is sent back to the tunnel 32, so that the air in the tunnel is circularly treated in a static state.

[0040] S2, the air pollution index and air temperature are collected by the environmental monitoring sensor 28 arranged at the top of the tunnel 32, and the vehicle density information is collected by the camera 29;

[0041] In this step, the environmental monitoring sensor 28 monitors the parameters such as PM2.5, PM10, NOx and CO in the air in real time, and the camera 29 is used to analyze the vehicle density and congestion degree, so as to construct a complete tunnel environment data set.

[0042] S3, the air pollution index, air temperature and vehicle density information are sent to the control box 26 of the purification and cooling vehicle 27;

[0043] In this step, the control box 26 is the intelligent core of the purification and cooling vehicle 27, which is used to receive external data and make judgments and decisions, so as to ensure that the system responds in real time and the operation is accurate.

[0044] S4, the control box 26 comprehensively judges whether the current tunnel needs to start the purification operation based on the air pollution index, air temperature and vehicle density information, and determines the travel path of the purification and cooling vehicle 27 and the working state of the purification and cooling unit.

[0045] In this step, the control box 26 judges whether to start the purification mode in combination with the pollution concentration and the traffic state, and if it is judged that the mobile operation is needed, the traffic passability and pollution intensity of the left and right tunnels are comprehensively analyzed, the travel route of the purification and cooling vehicle 27 is planned, and the start-stop state and operation intensity of components such as the electrostatic precipitation section 3, the electrostatic precipitation automatic cleaning nozzle 4, the EC fan wall 5 and the surface cooler section 6 are controlled, so that the on-demand scheduling and efficient purification are realized.

[0046] Further, the cold storage module 9 is quickly detachable. In step S1, in summer, the ice stored in the cold storage module 9 is used to cool the air in the tunnel 32 during the day. In other seasons, the tunnel temperature does not exceed the threshold, and the cold storage module 9 does not need to store ice or the electric vehicle does not carry the cold storage module 9. During summer, the heat accumulated in the tunnel 32 is significant, and the cold storage module 9 needs to store ice balls 9.2 made by the ice maker set 30 in advance to cool the air in the tunnel 32 during the day. In other seasons, the tunnel temperature does not exceed the threshold, and the system can only perform purification operation without storing ice. At this time, the cold storage module 9 does not need to store ice or the electric vehicle does not carry the cold storage module 9, which is beneficial to reduce energy consumption and operating cost. In some embodiments, temperature sensors can be arranged in the tunnel 32 to monitor the air temperature at different times, so as to more accurately determine whether the cooling function needs to be started.

[0047] In the present embodiment, the control box 26 can control the EC fan wall 5 to operate at variable speed and variable volume, and adjust the air supply intensity in real time according to the pollution concentration and air flow demand in the tunnel 32, so as to achieve dynamic balance between energy saving and purification efficiency. At the same time, the control box 26 can control the glycol low-temperature pump 12 to operate at variable frequency and variable flow, and intelligently adjust the circulation flow of the glycol 9.1 according to the heat exchange demand of the surface cooler section 6, so as to improve the heat exchange efficiency, avoid excessive energy consumption, and further improve the economy and adaptability of the system operation.

[0048] In step S4, when the air pollution index collected by the environmental monitoring sensor 28 exceeds the first preset concentration value or the air temperature exceeds the first preset temperature value, and the vehicle density information collected by the camera 29 shows that the vehicle density in the tunnel is greater than the first preset vehicle density value, it is determined that there is a need for purification and cooling and the traffic is congested, and the control purification and cooling vehicle 27 is controlled to enter the tunnel 32 to perform operation. The pollution index exceeding the first threshold value indicates that the air quality is lower than the standard requirement, the air temperature exceeding the first preset temperature value indicates that the temperature in the tunnel is too high, and the large vehicle density indicates that the exhaust accumulation speed is fast and the air exchange efficiency is low. After joint determination, the system triggers the purification operation instruction and directs the purification and cooling vehicle 27 to enter the tunnel 32 to implement mobile purification or circulating purification operation.

[0049] Further, in step S4, when the air pollution index collected by the environment monitoring sensor 28 exceeds the second preset concentration value or the air temperature exceeds the second preset temperature value or the vehicle density information collected by the camera 29 shows that the vehicle density in the tunnel is greater than the second preset vehicle density value, it is judged that the purification and cooling demand is increased or the traffic is severely congested, and the purification and cooling vehicle 27 is driven into the tunnel 32 to perform the operation. The second preset concentration / temperature / vehicle density value is a strict control threshold higher than the first preset concentration / temperature / vehicle density value, which is used to cope with extreme pollution, high temperature or severe congestion. At this time, even if only one of the conditions is met, the emergency purification response mechanism will be triggered to quickly mobilize the purification and cooling vehicle 27 to perform high-frequency and enhanced-intensity purification operation to ensure that the tunnel environment is in a controllable state.

[0050] It should be noted that in step S4, when the air pollution index collected by the environment monitoring sensor 28 exceeds the first preset concentration value or the air temperature exceeds the first preset temperature value, but the vehicle density information collected by the camera 29 shows that the vehicle density is small, indicating that the traffic in the tunnel is smooth and the vehicles can pass quickly. At this time, the purification and cooling vehicle 27 can not need to perform the moving operation. The first preset concentration value is used to identify a mild or primary pollution state, and the first preset temperature value is used to identify a higher temperature state. If the vehicle density is low, it indicates that the pollution sources are distributed dispersedly and the air self-purification capability is acceptable, and the vehicles can pass quickly. The higher temperature in the tunnel can also be acceptable, and the purification and cooling vehicle 27 must pass quickly with the vehicle flow, which causes the purification system to stay in the tunnel for a short time, the operation is insufficient, and the purification and cooling effect is limited. In contrast, when the vehicle density information collected by the camera 29 shows that the vehicle density in the tunnel is large, indicating that traffic congestion or slow vehicle flow occurs. At this time, the purification and cooling vehicle 27 can slowly move or intermittently stop synchronously with the vehicle flow, so as to stay in the pollution air gathering area for a longer time, so that the treatment process of the coarse filter section 2, the electrostatic precipitation section 3, the EC fan wall 5 and the surface cooler section 6 is more sufficient, the overall purification and cooling effect is improved, and the moving operation is more suitable.

[0051] In one embodiment, the environment monitoring sensor 28 includes a plurality of sensors and is uniformly distributed on the top of the tunnel 32 for real-time monitoring of the air quality at different positions in the tunnel 32. During the driving of the purification and cooling vehicle 27 in the tunnel 32, when driving to a position of an environment monitoring sensor 28, the control box 26 can receive the pollution data corresponding to the position, and dynamically adjust the operating state of the purification and cooling unit based on the pollution degree. For example, when it is monitored that the pollution in the region is more serious, the control box 26 can automatically increase the speed of the EC fan wall 5 to speed up the air flow efficiency, and at the same time, increase the working power of the electrostatic precipitation section 3 to enhance the particulate removal effect, so as to realize high-precision purification operation according to section control and on-demand response, and effectively improve the air quality treatment efficiency of the whole tunnel.

[0052] The present application integrates the traditional centralized purification machine room and the mobile purification vehicle, optimizes the function of the purification and cooling vehicle 27 and designs the control strategy, so that it can not only work as a fixed centralized purification unit in the tunnel spare space 33, but also can flexibly enter the tunnel to perform the mobile purification task according to the pollution degree and traffic condition in the tunnel, with high scheduling flexibility and operation adaptability. Especially in the tunnel structure with bidirectional traffic, the purification and cooling vehicle 27 can move between the left tunnel and the right tunnel according to the actual needs, to realize dynamic air purification in the whole area of the tunnel. The present application comprehensively considers the seasonal temperature change, real-time pollution index and traffic density and other key parameters in the control method, intelligently judges the purification time and path planning, so that the purification and cooling vehicle 27 can realize efficient operation in different operation scenarios, and improves the intelligent level and use flexibility of the whole system.

[0053] In summary, the present application discloses a tunnel air purification and cooling vehicle, a purification and cooling system and a control method thereof, which adopts the integrated design of the purification and cooling vehicle 27 and the environmental monitoring sensor 28, the camera 29, the ice making unit 30 and the charging pile 31, so that the purification and cooling vehicle 27 can not only work as a fixed centralized purification unit in the tunnel spare space 33, but also can flexibly move in the tunnel 32 according to the needs. The purification and cooling vehicle 1 is provided with a multi-stage purification and cooling structure of a rough filter section 2, an electrostatic precipitation section 3, an EC fan wall 5, a surface cooler section 6 and the like, and receives the pollution index, temperature and traffic flow information collected by the environmental monitoring sensor 28 and the camera 29 through the control box 26, intelligently judges whether to perform the purification operation and plans the travel path. The system can charge the storage battery through the charging pile 31 at night, and use the ice making unit 30 to make ice and store it in the cold storage module 9, and realize air cooling through the heat exchange coil 6.1 and the ethylene glycol 9.1 circulating driven by the ethylene glycol low temperature pump 12 during the daytime high temperature period, while intelligently adjusting the purification mode and operation strategy according to the seasonal temperature, pollution level and traffic congestion. The technical scheme not only reduces the initial configuration requirements of the traditional ventilation system on the ventilation equipment and power supply system, but also improves the efficiency of the tunnel 32 and the internal air purification and cooling, reduces the emission of pollutants, and improves the quality of the tunnel 32 and the surrounding environment. For the semi-closed high-pollution space such as urban traffic tunnel, the present application provides an efficient, energy-saving, intelligent and sustainable air environment solution, with good application prospect and popularization value.

[0054] The above examples are only used to illustrate the technical solutions of the present application, but not to limit the present application; the technical features in the above examples or different examples can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for simplicity; although the present application has been described in detail with reference to the foregoing examples, it should be understood by those of ordinary skill in the art that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A tunnel air purification and cooling vehicle, characterized in that, The system includes an electric vehicle body, an air handling unit, a cold source unit, and a power supply and control unit. The air handling unit, in sequence according to the airflow path, includes an insect screen (1), a coarse filter section (2), an electrostatic dust removal section (3), an electrostatic dust removal automatic cleaning nozzle (4), an EC fan wall (5), a surface cooler section (6), a water baffle section (7), and an air outlet louver (8). The surface cooler section (6) is equipped with a heat exchange coil (6.1), and the heat exchange medium in the heat exchange coil (6.1) is ethylene glycol (9.1). The cold source unit includes a cold storage module (9) with a built-in cold storage ice ball (9.2). The output end of the cold storage module (9) is connected to the input end of the heat exchange coil (6.1) through an ethylene glycol pipe (10). The output end of the tube (6.1) is connected to the input end of the cold storage module (9) through the ethylene glycol pipe (10). The high-temperature ethylene glycol (9.1) flows through the cold storage module (9) and exchanges heat with the cold storage ice ball (9.2) to become low-temperature ethylene glycol (9.1) for recycling. A bypass pipe is provided between the output end of the heat exchange coil (6.1) and the ethylene glycol pipe (10) at the output end of the cold storage module (9). The bypass pipe is equipped with a high-temperature ethylene glycol pump (11) and a three-way regulating valve (13) to achieve partial bypass of the high-temperature ethylene glycol (9.1) to regulate the supply temperature. The power supply and distribution control unit includes a battery pack, a distribution box (25) and a control box (26). The distribution box (25) is used to supply power to the purification and cooling equipment.

2. The tunnel air purification and cooling vehicle according to claim 1, characterized in that, The cold storage module (9) is equipped with a solenoid valve (15) and a cold storage ethylene glycol interface (16) at both its input and output ends. The cold storage module (9) includes multiple parallel cold storage units. Each cold storage unit is equipped with a valve and a cryogenic ethylene glycol pump (12) at its input end and a check valve (14) at its output end.

3. The tunnel air purification and cooling vehicle according to claim 2, characterized in that, It also includes an automatic cleaning unit, which includes a water collection tank (17), a flushing pump (18), a flushing water collection tray (19), a condensate collection tray (20), a water pipe (21), a drain outlet (23), and a water inlet (24). The flushing pump (18) is located in the water collection tank (17) and is used to pump water to the electrostatic dust removal automatic cleaning nozzle (4). The electrostatic dust removal automatic cleaning nozzle (4) sprays water towards the electrostatic dust removal section (3). The flushing water collection tray (19) is located below the electrostatic dust removal section (3). The condensate collection tray (20) is located below the surface cooler section (6) and the water baffle section (7) for collecting air condensate and is connected to the water collection tank (17). The water inlet (24) is connected to the upper part of the water collection tank (17) through a water pipe (21). The bottom of the water collection tank (17) is connected to the drain outlet (23) through a water pipe (21). A drain gate valve (22) is arranged on the water pipe (21) connecting the flushing water collection tray (19) to the drain outlet (23).

4. A tunnel air purification and cooling system, characterized in that, Includes the purification and cooling vehicle (27) as described in any one of claims 1-3, an environmental monitoring sensor (28), a camera (29), an ice-making unit (30), and a charging pile (31). The environmental monitoring sensor (28) is located at the top of the tunnel (32), and the ice-making unit (30) and the charging pile (31) are located outside the tunnel (32). The purification and cooling vehicle (27) stops near the ice-making unit (30) and the charging pile (31) at night, using the low-priced electricity during the off-peak hours of the power grid at night to charge the battery pack of the vehicle body and the power supply and distribution control unit. At the same time, it makes ice and stores it in the cold storage module (9) through the ice-making unit (30).

5. The tunnel air purification and cooling system according to claim 4, characterized in that, The tunnel (32) includes spare tunnel space (33), which is used to park purification and cooling vehicles (27) in the temporary parking area of ​​the tunnel. The purification and cooling vehicles (27) can carry out purification and cooling operations in this section.

6. The tunnel air purification and cooling system as described in claim 5, characterized in that, The control box (26) automatically controls the travel path of the purification and cooling vehicle (27) and the working status of the purification and cooling unit based on the air pollution index, air temperature and vehicle density information collected by the environmental monitoring sensor (28) and the camera (29).

7. A control method for the tunnel air purification and cooling system according to claim 6, characterized in that, Includes the following steps: S1, the purification and cooling vehicle (27) is in the spare space (33) of the tunnel and starts the static purification operation mode; S2 collects air pollution indicators and air temperature through environmental monitoring sensors (28) installed at the top of the tunnel, and collects vehicle density information through cameras (29); S3, the air pollution index, air temperature and vehicle density information are sent to the control box (26) of the purification and cooling vehicle (27). S4, the control box (26) comprehensively judges whether the current tunnel needs to start purification operation based on the air pollution index, air temperature and vehicle density information, and determines the travel path of the purification and cooling vehicle (27) and the working status of the purification and cooling unit.

8. The control method for the tunnel air purification and cooling system according to claim 7, characterized in that, The cold storage module (9) is quick-detachable. In step S1, during the hot summer daytime, the cold storage module (9) stores ice for cooling. In other seasons, when the tunnel temperature does not exceed the specified time period, the cold storage module (9) does not need to store ice or the electric vehicle body does not carry the cold storage module (9).

9. The control method for the tunnel air purification and cooling system according to claim 7, characterized in that, In step S4, when the air pollution index collected by the environmental monitoring sensor (28) exceeds the first preset concentration value or the air temperature exceeds the first preset temperature value, and the vehicle density information collected by the camera (29) shows that the vehicle density in the tunnel is greater than the first preset vehicle density value, it is determined that there is a need for purification and cooling and traffic congestion, and the purification and cooling vehicle (27) is controlled to enter the tunnel to perform the operation.

10. The control method for the tunnel air purification and cooling system according to claim 9, characterized in that, In step S4, when the air pollution index collected by the environmental monitoring sensor (28) exceeds the second preset concentration value or the air temperature exceeds the second preset temperature value or the vehicle density information collected by the camera (29) shows that the vehicle density in the tunnel is greater than the second preset vehicle density value, it is determined that the demand for purification and cooling has increased or the traffic is severely congested, and the purification and cooling vehicle (27) is controlled to enter the tunnel to perform the operation.

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