Wind dispelling and heat dissipating system for guaranteeing underground space environment

Abstract

The utility model relates to the technical field of air conditioner refrigeration, in particular to a wind dispelling and heat dissipating system for guaranteeing an underground space environment. The system comprises an air blowing device, an air exhaust device and a plurality of air dispelling and heat dissipating units, the air blowing device is used for being arranged at an air inlet channel opening of the underground space, and the air exhaust device is used for being arranged at an air outlet channel opening of the underground space; the wind dispelling and heat dissipation unit comprises an air inlet, an air outlet, a spraying device, a receiving container and a heat exchange unit; the air outlet is formed in one side of the heat exchange unit, and the air inlet is formed in the other opposite side of the heat exchange unit; the plurality of wind dispelling and heat dissipating units are embedded in the underground space, an air inlet of each wind dispelling and heat dissipating unit is opposite to the blower device, and an air outlet of each wind dispelling and heat dissipating unit is opposite to the exhaust device; the spraying device is located at the top of the heat exchange unit. The receiving container is arranged at the bottom of the heat exchange unit. According to the system, multi-stage stacked wind dispelling and heat dissipation of the underground space are completed, and the low-energy-consumption, low-cost and high-energy-efficiency wind dispelling and heat dissipation effects of the underground space are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning and refrigeration, and more specifically, to a ventilation and heat dissipation system for protecting an underground space environment. Background Art

[0002] The current underground space environment is closed and humid, with large-scale support equipment inside. The equipment generates a large amount of heat during operation, which requires heat dissipation and cooling, and the introduction of fresh air to discharge harmful gases underground and harmful gases generated during the operation of the equipment; at the same time, it is necessary to ensure the working environment of underground space staff and provide a comfortable office scene; therefore, the underground space has an urgent need for ventilation and heat dissipation systems; in recent years, with the rapid development of underground space construction, the scale and area of ​​underground space have increased, the length of underground space has become longer, the number of staff has increased, the number of equipment has increased, the heat generation of underground space has increased sharply, and the demand for fresh air and heat dissipation has increased.

[0003] Furthermore, due to the high difficulty of underground space construction and the large amount of excavation work, the entire underground space is relatively compact. Currently, the existing underground space ventilation and heat dissipation systems have the following problems:

[0004] 1. The commonly used cooling tower method on the ground is adopted. The underground space has a large cross-sectional area and a large amount of excavation work, resulting in high cost of the entire project;

[0005] 2. The ventilation holes are large in size, difficult to arrange and conceal;

[0006] 3. The underground space is long, and the conventional cooling tower requires a large air supply volume, and the power consumption of fresh air delivery and exhaust is high;

[0007] 4. The overall energy efficiency of the entire ventilation and heat dissipation system is low and the energy consumption is high. Utility Model Content

[0008] The present invention aims to overcome at least one defect (shortcoming) of the above-mentioned prior art and provide a ventilation and heat dissipation system for underground space environment protection, which is used to achieve low energy consumption, low cost and high energy efficiency ventilation and heat dissipation effect in underground space.

[0009] In the first aspect, a ventilation and heat dissipation system for underground space environment protection specifically includes:

[0010] The air dissipation and heat dissipation system includes an air blowing device, an air exhaust device and a plurality of air dissipation and heat dissipation units. The air blowing device is used to be arranged at the air inlet of the underground space, and the air exhaust device is used to be arranged at the air outlet of the underground space; the air dissipation and heat dissipation unit includes an air inlet, an air outlet, a spray device, a receiving container, and a heat exchange unit;

[0011] The air outlet is arranged on one side of the heat exchange unit; the air inlet is arranged on the other side opposite to the heat exchange unit;

[0012] A plurality of the air dissipation and heat dissipation units are embedded and installed in the underground space, and the air inlet of each of the air dissipation and heat dissipation units is opposite to the air blowing device; the air outlet of each of the air dissipation and heat dissipation units is opposite to the exhaust device;

[0013] The spray device is located at the top of the heat exchange unit, and the receiving container is arranged at the bottom of the heat exchange unit.

[0014] Understandably, due to its closed nature, underground spaces have poor natural ventilation, so a blower is needed to promote air circulation. By continuously drawing fresh air into the underground space and expelling polluted air, the blower can effectively improve the air quality in the underground space, providing a healthy breathing environment for workers. At the same time, this application also uses the air drawn in by the blower in combination with the spray medium to dissipate heat from the equipment, thereby improving the efficiency of heat exchange for the equipment.

[0015] The air inlet and the air outlet of the ventilation and heat dissipation unit are positioned relative to each other, so as to prevent the incoming fresh air from winding and stagnating in the ventilation and heat dissipation unit, thereby weakening the ventilation effect;

[0016] The air-dissipating and heat-dissipating unit is embedded in the underground space, which can avoid the high engineering cost problem of traditional heat-dissipating cooling towers. It is directly embedded in the underground space, and the installation area that needs to be excavated is greatly reduced. In addition, the temperature is directly cooled in the underground space, and the amount of air required to be blown in does not need to be too much to achieve the air-dissipating and heat-dissipating effect, thereby realizing high-efficiency heat dissipation.

[0017] Optionally, the underground space is an underground tunnel.

[0018] It is understandable that underground tunnels are long and contain a large number of support equipment inside, which will generate a lot of heat when running. In addition, underground tunnels have poor ventilation, and turbid and polluted air can easily form detours underground. Therefore, the ventilation and heat dissipation system is very important for the maintenance of underground tunnels.

[0019] Optionally, at least two of the air-dissipating and heat-dissipating units are embedded and installed between the air inlet and the air outlet of the underground space in at least one row horizontally, and the fresh air in the underground space passes through the air-dissipating and heat-dissipating units in the same row in sequence.

[0020] It is understandable that the air dissipation and heat dissipation system achieves the effect of multi-stage air dissipation and heat dissipation, which requires at least two air dissipation and heat dissipation units, and at least one row is embedded and installed in the underground space horizontally, which can better realize that the air outlet of one air dissipation and heat dissipation unit is the air inlet of the next air dissipation and heat dissipation unit, shortening the transmission distance of fresh air in the tunnel heat dissipation, which is conducive to efficient heat dissipation and efficient air dissipation.

[0021] Optionally, the air-dissipating and heat-dissipating system includes four air-dissipating and heat-dissipating units, and the fresh air in the underground space passes through the four air-dissipating and heat-dissipating units in sequence.

[0022] It is understandable that the air-dissipating and heat-dissipating system realizes the multi-level heat dissipation superposition function by installing multiple air-dissipating and heat-dissipating units, but the moisture holding capacity of the fresh air is limited. After completing the four-level heat exchange work with the cooling medium, the heat absorption capacity of the fresh air will be greatly reduced. Continuing to install the next air-dissipating and heat-dissipating unit to complete the next level of air-dissipating and heat-dissipating effect will be poor, and the operating conditions will become worse, the system energy efficiency will become lower, and the operating reliability will become worse.

[0023] Optionally, the ventilation and heat dissipation system further includes a pipeline; the spray device is connected to the receiving container through the pipeline, the pipeline further includes a driving device, and the spray device is provided with a plurality of spray holes opening downward.

[0024] It can be understood that the heat exchange unit first exchanges heat with the cooling medium sprayed by the spray device, and the cooling medium that completes the heat exchange then transfers the heat to the fresh air through contact with the fresh air and is discharged outside the underground space; and the spray plate is arranged on the top of the heat exchange unit, and the air outlet is on the left and right sides of the heat dissipation unit, which can form a wind and water cross flow arrangement, so that heat can be transferred from the heat dissipation unit to the fresh air more efficiently, meeting the high-load heat dissipation requirements.

[0025] Optionally, the air dissipation and heat dissipation system further includes an air valve, which is arranged in an exhaust area of ​​the air dissipation and heat dissipation unit adjacent to the exhaust device.

[0026] It is understandable that when the weather temperature is low, other areas of the underground space need heating, so air valves can be used to raise the fresh air used for heat dissipation to a certain temperature to provide heating for other areas, which can make rational use of resources and improve the system's energy efficiency.

[0027] Optionally, the ventilation and heat dissipation system further includes a temperature sensor for detecting the exhaust temperature of the ventilation and heat dissipation system.

[0028] It is understandable that according to the needs of other areas, the temperature of the temperature sensor is monitored, and only when the fresh air reaches a certain temperature will the air valve be controlled to open to supply hot air, so that the heating temperature is guaranteed and the intelligence level of the heating work of the system is improved.

[0029] It is understandable that the air dissipation and heat dissipation system further includes a control unit, which is electrically connected to the air valve, the spray device and the plurality of air dissipation and heat dissipation units.

[0030] It is understandable that the control unit controls the ventilation and heat dissipation units to achieve a flexible configuration of multiple stacking. According to the heat dissipation load demand of the underground space, the use of ventilation and heat dissipation units can be reduced when the demand is low, thereby reducing energy consumption. When the heat dissipation demand is high, the number of ventilation and heat dissipation units can be increased without affecting normal heat dissipation.

[0031] Control the spray device to achieve dry cooling and wet cooling state conversion of the system to meet the heat dissipation requirements of different environments and situations;

[0032] Controlling the air valve can reduce manual intervention and improve the operating efficiency and management level of the system.

[0033] The utility model is a ventilation and heat dissipation system for protecting the underground space environment. The system is directly embedded and installed inside the underground space, and utilizes a structure in which multiple ventilation and heat dissipation units are installed. A multi-stage superimposed ventilation and heat dissipation method is adopted to cool down the equipment that needs to be cooled, and the input fresh air is transmitted and circulated in multiple stages. At the same time, an air valve is provided to provide protection for the heating demand of the underground office area and expand the utilization of resources. The ventilation and heat dissipation system for protecting the underground space environment designed by the utility model can circumvent the problems of large excavation work and large floor space of traditional heat dissipation and cooling systems, and only requires a small air volume to complete, thereby improving the exhaust efficiency, improving the comprehensive energy efficiency of the entire ventilation and heat dissipation system, reducing the comprehensive energy consumption of the entire ventilation and heat dissipation system, and achieving a low-energy, low-cost, and high-efficiency ventilation and heat dissipation effect in the underground space. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a structural diagram of the air dissipation and heat dissipation unit of the present invention.

[0035] Figure 2 This is a side view of the utility model's ventilation and heat dissipation system embedded in an underground space for installation. DETAILED DESCRIPTION

[0036] The drawings in this utility model are for illustrative purposes only and are not to be construed as limiting the scope of this utility model. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the products. Those skilled in the art will understand that some well-known devices and their descriptions may be omitted from the drawings.

[0037] Example

[0038] In this utility model, a ventilation and heat dissipation system for underground space environment protection is provided. Figure 1 As shown, a structural diagram of a ventilation and heat dissipation unit is provided, which specifically includes:

[0039] The air dissipation and heat dissipation system includes an air blowing device, an air exhaust device and a plurality of air dissipation and heat dissipation units. The air blowing device is used to be arranged at the air inlet of the underground space, and the air exhaust device is used to be arranged at the air outlet of the underground space; the air dissipation and heat dissipation unit includes an air inlet, an air outlet, a spray device, a receiving container, and a heat exchange unit;

[0040] The air outlet is arranged on one side of the heat exchange unit; the air inlet is arranged on the other side opposite to the heat exchange unit;

[0041] A plurality of the air dissipation and heat dissipation units are embedded and installed in the underground space, and the air inlet of each of the air dissipation and heat dissipation units is opposite to the air blowing device; the air outlet of each of the air dissipation and heat dissipation units is opposite to the exhaust device;

[0042] The spray device is located at the top of the heat exchange unit, and the receiving container is arranged at the bottom of the heat exchange unit.

[0043] It can be understood that the underground space is a spatial area below the surface, including naturally formed caves, tunnels, and artificially excavated basements, subway systems, etc.

[0044] Specifically, the underground space is an underground tunnel.

[0045] It is understandable that underground tunnels are long and contain a large number of support equipment inside, which will generate a lot of heat when running. In addition, underground tunnels have poor ventilation, and turbid and polluted air can easily form detours underground. Therefore, the ventilation and heat dissipation system is very important for the maintenance of underground tunnels.

[0046] For example, the present invention provides an embodiment, such as Figure 2 As shown, the air-dissipating and heat-dissipating system is installed by embedding in the underground space. Specifically, at least two of the air-dissipating and heat-dissipating units are embedded and installed between the air inlet and the air outlet of the underground space in at least one row horizontally, and the fresh air in the underground space passes through the air-dissipating and heat-dissipating units in the same row in turn.

[0047] It is understandable that the ventilation and heat dissipation system achieves the effect of multi-stage ventilation and heat dissipation, which requires several ventilation and heat dissipation units, and the ventilation and heat dissipation units are embedded in the underground space in at least one row in series. Such an arrangement can better achieve that the air outlet of one ventilation and heat dissipation unit is the air inlet of the next ventilation and heat dissipation unit, which is conducive to efficient heat dissipation and efficient ventilation. The number of rows of ventilation and heat dissipation units installed in the underground space is at least one row. If the location of the underground space allows, multiple ventilation and heat dissipation systems can be installed in the underground space to achieve higher load heat dissipation requirements.

[0048] Furthermore, the air dissipation and heat dissipation system includes four air dissipation and heat dissipation units, and the fresh air in the underground space passes through the four air dissipation and heat dissipation units in sequence.

[0049] It is understandable that the ventilation and heat dissipation system adopts a spray heat exchange method, and uses the spray device to spray the cooling medium to the unit that needs heat exchange, thereby realizing heat exchange between the cooling medium and the heat exchange unit; specifically, the ventilation and heat dissipation system also includes a pipeline; the spray device is connected to the receiving container through the pipeline, and the pipeline also includes a driving device, and the spray device is provided with a plurality of downward-opening spray holes. The above result completes the circulation of the cooling medium in the ventilation and heat dissipation unit, and the cooling medium flows out from the top to the bottom of the heat dissipation unit and is collected in the receiving container at the bottom of the heat dissipation unit. The cooling medium is transported to the spray device through the channel and the driving device to complete the next spraying work again.

[0050] It is understandable that after the cooling medium is heated up, it is fully in contact with the heat dissipation fresh air blown into the underground space by the blowing device to transfer heat, so that heat is transferred from the cooling medium to the heat dissipation fresh air. The heat exchange process between the heat dissipation fresh air and the cooling medium includes two heat exchange methods: sensible heat exchange and latent heat exchange (using the cooling medium to evaporate into the heat dissipation fresh air to take away the heat and reduce the temperature of the cooling medium). Compared with the traditional air-cooled heat dissipation system, the cooling effect and heat dissipation capacity of this application are better under the same air volume. Finally, the heat dissipation fresh air discharges the absorbed heat to the outside of the underground space. The cooling medium sprays downward, and after completing the heat dissipation of the heat dissipation unit, it is received by the receiving container, and then enters the channel to complete the circulation of the cooling medium and perform the next spraying work.

[0051] It is understandable that the ventilation and heat dissipation system includes several ventilation and heat dissipation units. Preferably, in this example, the ventilation and heat dissipation system includes four-level ventilation and heat dissipation units. The four-level ventilation and heat dissipation units are embedded and installed in the underground space and placed side by side in the underground space. The installation distance between each ventilation and heat dissipation unit is determined according to the length of the underground space and the system energy consumption affected by the distance of the fresh air transmission; and the air inlet of each ventilation and heat dissipation unit is opposite to the blowing device; the air inlet of each ventilation and heat dissipation unit is opposite to the exhaust device. Such an arrangement can facilitate the fresh air that has completed heat exchange from the previous ventilation and heat dissipation unit to smoothly enter the next ventilation and heat dissipation unit for heat exchange.

[0052] It is understandable that the ventilation and heat dissipation system can control the status of the ventilation and heat dissipation unit and the spray device according to the different heat dissipation load requirements of the underground space, and realize the superposition of multi-level ventilation and heat dissipation functions. In this example, the opening of the four-level ventilation and heat dissipation unit is controlled, and multi-level ventilation and heat dissipation of the highest four-level ventilation and heat dissipation unit can be adopted. The system continuously improves the saturation of the moisture holding capacity of the fresh air through the form of step-by-step evaporative heat dissipation, and uses the principle of evaporation to continuously take away the heat of the system at different levels, and finally discharges it to the outside of the underground space.

[0053] For example, the control unit first controls the four ventilation and heat dissipation units and the corresponding spray devices to be in an on state, and the ventilation and heat dissipation system is in a four-level ventilation and heat dissipation state and a wet and cold state. All ventilation and heat dissipation units are arranged in a wind and water cross-flow arrangement, that is, several ventilation and heat dissipation units are distributed between the air inlet and outlet of the underground space, so that the heat dissipation fresh air flows horizontally. The spray devices are located on top of the ventilation and heat dissipation units, and the cooling medium is sprayed from top to bottom through the heat exchange units that need to dissipate heat to dissipate it. In specific applications, the temperature and humidity of fresh air entering the underground space from the outside is generally 24°C / 60%. After evaporative heat dissipation in the first-level ventilation and heat dissipation unit, the outlet air temperature and humidity can be 32°C / 80%. The outlet air serves as the inlet air of the second-level ventilation and heat dissipation unit, enters the second-level ventilation and heat dissipation unit for evaporative heat dissipation, and the outlet air temperature and humidity can be 41°C / 90%. Then it enters the third-level ventilation and heat dissipation unit for evaporative heat dissipation, and the outlet air condition can be 48°C / 90%. Then it enters the fourth-level ventilation and heat dissipation unit for evaporative heat dissipation. At this time, the condensation temperature of the fourth-level ventilation and heat dissipation unit is above 50°C, which is close to the condensation temperature of the air cooling system; at this time, the exhaust temperature of the fourth-level ventilation and heat dissipation unit reaches 52°C / 90%. It can be understood that the condensation temperature is the temperature when the refrigerant in the air cooling system changes from gas to liquid, and the exhaust temperature is the temperature of the outlet of the fresh air cooling medium ventilation and heat dissipation unit. Since the condensing temperature of the fourth-stage ventilation and heat dissipation unit has reached the operating limit of many compressors, the energy efficiency of the entire ventilation and heat dissipation system is now equivalent to that of the air-cooled system, and the COP refrigeration performance coefficient is about 2.5; the exhaust air at this time can no longer be used. If the 52°C / 90% exhaust air is continued to be used as the inlet air of the fifth-stage ventilation and heat dissipation unit, the condensing temperature of the fifth-stage ventilation and heat dissipation unit is high, the operating conditions are poor, the system energy efficiency is low, and the operating reliability is poor. Accordingly, in the specific implementation process, the application adopts a four-stage ventilation and heat dissipation unit to achieve the best ventilation and heat dissipation effect.

[0054] In the process of dissipating air through actual underground space, if the cooling capacity of the entire ventilation and heat dissipation system is designed to be 1000kW, the air inlet temperature is 24℃ / 80%, and a 4-stage series step-by-step cooling system is designed, and 50% of the conventional heat dissipation air volume is used, the heat dissipation air volume will be reduced by half. According to the actual system operation test results, the total cooling capacity of the entire system reaches 1008kW; the average energy efficiency of the system reaches 3.14; because the air volume is reduced by half, the energy consumption of the blower and exhaust device in the underground space is reduced by 75%. In particular, for deep underground tunnels with a tunnel length greater than 600mm, the comprehensive energy efficiency of the entire system (including the ventilation and heat dissipation system and the blower and exhaust device) can be reduced by 30%.

[0055] Specifically, the air dissipation and heat dissipation system further includes an air valve, which is arranged in an exhaust area of ​​the air dissipation and heat dissipation unit adjacent to the exhaust device.

[0056] Furthermore, the air dissipation and heat dissipation system also includes a control unit, which is electrically connected to the air valve, the spray device and the plurality of air dissipation and heat dissipation units.

[0057] It is understandable that different seasons and time periods have different heat dissipation load requirements. In specific applications, the system can activate different levels of ventilation and heat dissipation through the control unit to provide ventilation and heat dissipation for the equipment and underground space. For example, in summer, due to the high heat dissipation demand, it is necessary to activate four levels of ventilation and heat dissipation units, entering the fourth level of ventilation and heat dissipation state. During the transitional seasons of spring and autumn, only two to three ventilation and heat dissipation units near the air inlet area of ​​the blower need to be activated, entering the second and third levels of ventilation and heat dissipation states.

[0058] Furthermore, the ventilation and heat dissipation system further includes a temperature sensor for detecting the exhaust temperature of the ventilation and heat dissipation system.

[0059] For example, the operation of controlling the state of the air valve is as follows:

[0060] Preset heating standard temperature;

[0061] When other areas of the underground space require heating, the control unit controls the plurality of spray devices to keep the ventilation and cooling system in the dry and cold state; the temperature of the temperature sensor is detected, and if the heating standard temperature is reached, the control unit controls the air valve to be opened;

[0062] When other areas of the underground space do not require heating, the air valve is controlled to be in a closed state by the control unit.

[0063] Understandably, when the weather is cold, the equipment in the underground space still needs ventilation and heat dissipation, and other areas of the underground space need heating. At this time, the ventilation and heat dissipation unit of the ventilation and heat dissipation system is turned on, but the spray device in the ventilation and heat dissipation unit is turned off, the dry cooling state is started, and the heating standard temperature is pre-set; the fresh air outside the underground space enters the ventilation and heat dissipation unit, and the equipment is also cooled by step-by-step cooling and heat dissipation. At the same time, the heat of the fresh air is gradually heated by heat exchange; when the fresh air passes through the exhaust area near the air valve, the exhaust temperature is measured by the temperature sensor. If the exhaust temperature reaches the heating standard temperature, the air valve is opened by the control unit to supply part of the hot air to other areas of the underground space; the entire ventilation and heat dissipation system can cool down and ventilate the equipment and the underground space, and at the same time, it can recover the heat emitted by the equipment, heat the fresh air step by step, and heat other areas.

[0064] This application addresses the problems of conventional underground ventilation and heat dissipation systems, such as the large amount of heat dissipation air required, the high energy consumption of the heat dissipation induced draft fans and exhaust fans, the large length of the underground space, and the high cost. This application proposes an underground space environmentally friendly ventilation and heat dissipation system that utilizes a relatively small air volume and maximizes the utilization of fresh heat dissipation air through step-by-step evaporative heat dissipation. This significantly reduces the amount of air required for heat dissipation in the underground space, reduces the size of the underground space excavation, and thus effectively reduces project costs. Furthermore, as the air volume decreases, the wind resistance also decreases. This reduction in air volume and wind resistance significantly reduces the power of the induced draft fans and exhaust fans, thereby reducing the energy consumption of the underground space heat dissipation system.

[0065] When other areas need heating, the ventilation and heat dissipation system can start the dry cooling mode, which not only dissipates heat to the heat exchange unit, but also gradually heats the fresh air coming in from the outside to heat other areas of the underground space, and discharges excess hot air to the outside of the underground space.

[0066] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A ventilation and heat dissipation system for underground space environment protection, characterized in that: Specifically include: The air dissipation and heat dissipation system includes an air blowing device, an air exhaust device and a plurality of air dissipation and heat dissipation units. The air blowing device is used to be arranged at the air inlet of the underground space, and the air exhaust device is used to be arranged at the air outlet of the underground space; the air dissipation and heat dissipation unit includes an air inlet, an air outlet, a spray device, a receiving container, and a heat exchange unit; The air outlet is arranged on one side of the heat exchange unit; the air inlet is arranged on the other side opposite to the heat exchange unit; A plurality of the air dissipation and heat dissipation units are embedded and installed in the underground space, and the air inlet of each of the air dissipation and heat dissipation units is opposite to the air blowing device; the air outlet of each of the air dissipation and heat dissipation units is opposite to the exhaust device; The spray device is located at the top of the heat exchange unit, and the receiving container is arranged at the bottom of the heat exchange unit.

2. The ventilation and heat dissipation system for underground space environment protection according to claim 1, characterized in that: The underground space is an underground tunnel.

3. The ventilation and heat dissipation system for underground space environment protection according to claim 1, characterized in that: At least two of the air-dissipating and heat-dissipating units are embedded and installed between the air inlet and the air outlet of the underground space in at least one row transversely, and the fresh air in the underground space passes through the air-dissipating and heat-dissipating units in the same row in sequence.

4. The ventilation and heat dissipation system for underground space environment protection according to claim 1, characterized in that: The air dissipation and heat dissipation system includes four air dissipation and heat dissipation units, and the fresh air in the underground space passes through the four air dissipation and heat dissipation units in sequence.

5. The ventilation and heat dissipation system for underground space environment protection according to claim 1, characterized in that: The ventilation and heat dissipation system further includes a pipeline; the spray device is connected to the receiving container through the pipeline, the pipeline further includes a driving device, and the spray device is provided with a plurality of spray holes opening downward.

6. The ventilation and heat dissipation system for underground space environment protection according to claim 1, characterized in that: The air dissipation and heat dissipation system further includes an air valve, which is arranged in an exhaust area of ​​the air dissipation and heat dissipation unit adjacent to the exhaust device.

7. The ventilation and heat dissipation system for underground space environment protection according to claim 1, characterized in that: The ventilation and heat dissipation system further includes a temperature sensor for detecting the exhaust temperature of the ventilation and heat dissipation system.

8. The ventilation and heat dissipation system for underground space environment protection according to claim 6, characterized in that: The air dissipation and heat dissipation system further includes a control unit, which is electrically connected to the air valve, the spray device and the plurality of air dissipation and heat dissipation units.

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