Gas-water curtain partition type smoke control system

Abstract

The invention relates to a gas-water curtain partition type tunnel smoke control system, and belongs to the field of tunnel fire prevention and control, the gas-water curtain partition type tunnel smoke control system comprises a tunnel, a smoke control partition, a tunnel fire extinguishing system, a gas curtain generation system, a water curtain generation system and a fire detection alarm, the gas curtain generation system comprises a gas curtain generation tail end, and the water curtain generation system comprises a water curtain generation tail end. Pressure sensors are arranged on the two sides of the air curtain generating tail end, and the angle of an air curtain air opening is adjusted according to the pressure on the two sides. According to the fire behavior and the pressure in the smoke control subareas, the air curtain air opening angle and the air curtain air speed are adjusted, and therefore smoke can be better controlled.

Description

Technical Field

[0001] The present application belongs to the field of safety science and technology and tunnel disaster prevention and mitigation technology, and specifically relates to an air-water curtain flexible partition type tunnel smoke control system. Background Art

[0002] Fire is the biggest threat to the operational safety of underwater transportation tunnels. 80% of casualties in fire accidents are caused by smoke control failure. Therefore, smoke control technology has become the key to ensuring the safety of tunnel operations.

[0003] The main idea of ​​existing tunnel smoke control technology is still around the word "exhaust", that is, to transport smoke from the fire scene to the outside. The relevant research and engineering applications at home and abroad are mainly divided into two categories: longitudinal smoke exhaust, which is a displacement ventilation method, forming a longitudinal airflow in the tunnel, blowing all the fire smoke downstream, which is suitable for one-way traffic tunnels with smooth road conditions; focused smoke exhaust, adopting the principle of nearest exhaust, setting up a special smoke exhaust duct in the tunnel and evenly arranging the smoke exhaust ports, only opening the smoke exhaust ports near the fire point, and exhausting the smoke nearby through the smoke exhaust duct, which is suitable for tunnels with long lengths and frequent blockages. For ultra-long underwater traffic tunnels, the above two types of technologies have certain limitations: when longitudinal smoke exhaust is adopted, once the tunnel is blocked by traffic, the fire will spread longitudinally, causing greater casualties; when focused smoke exhaust is adopted, the civil construction cost of the civil smoke duct is high and it is easy to leak air, which is prone to long-distance smoke leakage and large smoke leakage, resulting in the failure of the smoke exhaust system. In addition, in the early stage of the fire, the smoke is easily affected by the residual piston wind in the tunnel, and the smoke is easy to spread downstream of the fire source.

[0004] Whether it is the vertical smoke exhaust technology or the key smoke exhaust technology, there is a process of transporting smoke out of the fire scene and transporting it to the outside, which cannot fundamentally solve the problems of fast smoke spread, great harm of residual smoke in the fire scene, difficult control of super-long smoke exhaust, and easy failure of smoke exhaust. Therefore, a new smoke control system should be further proposed for super-long underwater tunnels to solve the above problems. Summary of the invention

[0005] In view of the above defects or improvements required in the prior art solutions, the present invention provides an air-water curtain partition type tunnel smoke control system, which is a new tunnel smoke control system that can temporarily divide the tunnel into multiple smoke control sections and process fire smoke on-site without affecting normal driving functions.

[0006] The air-water curtain partition type smoke control system of the present invention comprises a tunnel, a smoke control partition, a tunnel fire extinguishing system, an air curtain generating system, a water curtain generating system and a fire detection alarm. The tunnel is divided into a plurality of smoke control partitions by the air curtain generating system and the water curtain generating system. The air curtain generating system and the water curtain generating system are alternately arranged at the junction of different smoke control partitions of the tunnel, and the smoke is controlled inside the smoke control partition by the air curtain generating system and the water curtain generating system, thereby performing a smoke exhaust operation.

[0007] The pipeline network of the air curtain generating system of the present invention mainly consists of an air delivery pipeline and air curtain generating terminals. The air delivery pipeline is arranged longitudinally along the tunnel to provide air sources for the air curtain generating terminals. The air curtain generating terminals can spray to form an air curtain covering the cross-section of the tunnel. The air delivery pipeline consists of a main pipeline arranged longitudinally along the tunnel and branch pipelines individually connected to each air curtain generating terminal. Control valves are provided at the inlet connection of each air curtain generating terminal. The controller adjusts the opening degree of the control valves to regulate the opening of the air curtain generating system and the air supply volume of the air curtain generating system. The air curtain is a slit-type air outlet, and the cross-section of the air outlet adopts a wedge-shaped design to achieve uniform air supply.

[0008] The present invention determines the installation position of the air curtain air duct according to the number of lanes. For a two-lane tunnel, the air curtain generating terminals can be arranged only at the top to cover the entire cross-section of the tunnel; for a three-lane tunnel or a merging and diverging section, the air curtain generating terminals are respectively arranged at the top and both sides of the tunnel to form a "door" type layout.

[0009] The pipeline network of the water curtain generating system of the present invention mainly consists of a water supply pipeline and water curtain generating terminals. The water curtain generating terminals can spray to form a water curtain covering the cross-section of the tunnel. The water supply pipeline consists of a main water supply pipeline distributed longitudinally along the tunnel and branch pipelines connected to each water curtain generating terminal. The water curtain generating terminals can be arranged at the top of the tunnel. By applying pressure on the main water supply pipeline, water is ejected from the water curtain generating terminals. Due to the water pressure and gravity, the ejected water flow can cover the cross-section of the tunnel.

[0010] The air curtain generating terminals and water curtain generating terminals are arranged alternately in parallel at the boundary of the smoke control partition. The layout scheme of the air curtain generating terminals and water curtain generating terminals can be flexibly adjusted according to the specific project.

[0011] Preferably, a plurality of air curtain generating terminals and water curtain generating terminals are arranged alternately at the boundary. The air curtain generating terminals can better isolate the flow of smoke upstream and downstream, forming a relatively sealed space, while the water curtain generating terminals can reduce the temperature of the smoke and adsorb particulate matter, CO2, SO2 and other harmful substances in the smoke. By alternately arranging the air curtain generating terminals and water curtain generating terminals, compared with a single air curtain or water curtain, the isolation and cooling effects of the present invention are better, which is convenient for further handling of fires and avoids the harm of fires to the personnel in the tunnel.

[0012] Pressure sensors are arranged on both sides of the end of the air curtain generation. When a fire is detected, the smoke control zone where the fire is located is judged, and the pressure values of the pressure sensors on both sides of the end of the air curtain generation in the smoke control zone are compared. The angle of the air curtain air outlet is adjusted according to the magnitude of the pressure values on both sides: when the pressure on the fire source side is relatively large, it indicates that a negative pressure has not yet been formed at the smoke exhaust outlet. The burning of the fire source causes the temperature to rise, the smoke to accumulate, and the pressure to rise. At this time, the angle of the air curtain air outlet is adjusted, and the air outlet blows air toward the outside of the fire source, and the air outlet forms an angle of ° with the vertical direction; when the pressure on the fire source side is relatively small, it indicates that a negative pressure has already been formed at the smoke exhaust outlet, and the smoke is discharged through the smoke exhaust outlet, and the pressure at the fire source decreases. At this time, the angle of the air curtain air outlet is adjusted, and the air outlet blows air toward the fire source side, and the air outlet forms an angle of ° with the vertical direction.

[0013] Further, two water curtain generation ends and one air curtain generation end are alternately arranged at the junction of the smoke control zones. The two water curtain generation ends are arranged on the outside, and the air curtain generation end is in the middle of the two water curtain generation ends, forming a water curtain-air curtain-water curtain structure. The inner water curtain can isolate part of the smoke. And because the smoke temperature is relatively high, heat exchange is carried out between the smoke and the water curtain to reduce the smoke temperature. At the same time, the water curtain can adsorb some gases such as CO, CO2, and SO2 in the smoke; while the air curtain can better isolate the smoke due to the denser air jet; the outer water curtain further serves to reduce the temperature of the smoke and prevent the smoke from leaking outwards.

[0014] The air curtain air outlet can select low-speed air supply and high-speed air supply, and different air supply wind speeds are adopted according to different stages of the fire occurrence.

[0015] Further, two water curtain generation ends and one air curtain generation end are alternately arranged at the junction of the smoke control zones. The two water curtain generation ends are arranged on the outside, and the air curtain generation end is in the middle of the two water curtain generation ends, forming a water curtain-air curtain-water curtain structure. The water curtain close to the fire source can isolate part of the smoke. And because the smoke temperature is relatively high, heat exchange is carried out between the smoke and the water curtain to reduce the smoke temperature. At the same time, it can also adsorb some gases such as CO2 and SO2 in the smoke; while the air curtain can better isolate the smoke due to the denser air jet; the outer water curtain further serves to reduce the temperature of the smoke and prevent the smoke from leaking outwards.

[0016] CO concentration sensors and temperature sensors are arranged in each smoke control zone in the tunnel in the present invention. The development of the fire is judged through the CO concentration sensor and the temperature sensor in the smoke control zone where the fire occurrence point is located. When the CO concentration is less than or equal to the CO concentration threshold and the temperature is less than or equal to the temperature threshold, it is judged that this is the initial stage of the fire, and the fire smoke volume and temperature are relatively low, and the air curtain air outlet can supply air at a low speed; when the CO concentration is greater than the CO concentration threshold or the temperature is greater than the temperature threshold, it is judged that the overall fire situation is very large, and the fire smoke volume and temperature are relatively high, and the air curtain generation air outlet is controlled to supply air at a high speed.

[0017] Furthermore, two air curtain generating ends and one water curtain generating end are alternately arranged at the junction of the tobacco control zones. The two air curtain generating ends are arranged on the outer side, and the water curtain generating end is arranged in the middle of the two air curtain generating ends, forming an air curtain - water curtain - air curtain structure. When a fire occurs, the air curtain closer to the fire source can better isolate the smoke, preventing the high-temperature smoke and harmful gases from spreading to the upstream and downstream. The water curtain can adsorb the particulate matter, CO2, SO2 and other harmful substances in the smoke, and the outer air curtain further isolates the smoke, so as to prevent the smoke particles and harmful gases from spreading to other parts of the tunnel.

[0018] In the present invention, CO concentration sensors and temperature sensors are arranged in each tobacco control zone in the tunnel. The development of the fire is judged by the CO concentration sensor and temperature sensor in the tobacco control zone where the fire occurs. When the CO concentration is less than or equal to the CO concentration threshold and the temperature is less than or equal to the temperature threshold, it is judged that this is the initial stage of the fire, the amount of fire smoke and the temperature are both low, and the air curtain air outlet can supply air at a low speed; when the CO concentration is greater than the CO concentration threshold and the temperature is less than or equal to the temperature threshold, or the CO concentration is less than or equal to the CO concentration threshold and the temperature is greater than the temperature threshold, it is judged that the overall fire situation is not large and relatively easy to control, and the air curtain close to the fire source is controlled to supply air at a high speed, and the air curtain not close to the fire source is controlled to supply air at a low speed; when the CO concentration is greater than the CO concentration threshold and the temperature is greater than the temperature threshold, it is judged that the overall fire situation is very large, and both air curtain generating air outlets are controlled to supply air at a high speed.

[0019] The present invention sets up tobacco control zones, controls the smoke within the tobacco control zones through the isolation effect of the air curtain and the water curtain, and absorbs and purifies the smoke through the components in the smoke purification unit, absorbing the particulate matter and harmful gases in the smoke, thus completely solving the harmful components in the smoke and avoiding the harm of the tunnel smoke to the upstream and downstream personnel.

[0020] In order to improve the tobacco control effect of the fire, the present invention divides the tunnel into multiple tobacco control zones, and isolates different tobacco control zones through the air curtain and the water curtain, so that the smoke generated by the fire is isolated inside the tobacco control zones, thereby reducing the harm to other personnel in the upstream and downstream of the tunnel. The method of alternately arranging the air curtain and the water curtain takes into account both the isolation of the smoke and the functions of cooling the smoke and removing harmful components. Compared with the tobacco control methods that only use the air curtain or the water curtain alone, the tobacco control effect of the present invention is better.

[0021] The present invention also determines the pressure inside and outside the smoke control zone based on the pressure sensors in different smoke control zones. By comparing the internal and external pressures, it determines whether a negative pressure is formed inside the smoke control zone and adjusts the angle of the air curtain air outlet according to the negative pressure situation. When no negative pressure is formed inside the smoke control zone, the air outlet faces outward, which can cover a larger space and prevent smoke from overflowing. When a negative pressure has been formed inside the smoke control zone, the air outlet faces inward. Therefore, the coverage area of the smoke control zone is smaller, leaving more space for rescue and personnel evacuation. The present invention also determines the development of the fire based on the CO and temperature values at the fire source. When both the CO and temperature values are low, low-speed air supply can be adopted, while when the CO and temperature values are high, high-speed air supply is adopted. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the air-water curtain smoke isolation tunnel smoke control system shown in the embodiments of the present invention;

[0023] Figure 2 Cross-sectional view of the air curtain shown in the embodiments of the present invention;

[0024] Figure 3 Layout diagram of the air curtain for two lanes shown in the embodiments of the present invention.

[0025] Figure 4 Layout diagram of the air curtain for three lanes shown in the embodiments of the present invention.

[0026] Figure 5 Cross-sectional view of the water curtain shown in the embodiments of the present invention.

[0027] Figure 6 Schematic diagram of adjusting the air curtain air outlet angle according to pressure shown in the embodiments of the present invention.

[0028] Figure 7 Schematic diagram of adjusting the air outlet speed according to the development of the fire shown in the embodiments of the present invention.

[0029] Description of reference numerals: 1 - tunnel, 2 - smoke control zone, 3 - tunnel fire extinguishing system, 4 - tunnel air curtain generating system, 5 - water curtain generating system, 6 - fire detection alarm, 7 - air curtain, 8 - water curtain, 9 - pressure sensor, 10 - CO concentration sensor, 11 - temperature sensor, 401 - gas pipeline, 402 - air curtain generating end. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the present invention.

[0031] In addition, the described features, structures, or characteristics may 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 the embodiments of the present application. However, those skilled in the art will realize that the technical solutions of the present application may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the present application.

[0032] Figure 1 is a schematic diagram of the air-water curtain partition type smoke control system of the present invention, including a tunnel 1, a smoke control zone 2, a tunnel fire extinguishing system 3, an air curtain generating system 4, a water curtain generating system 5, and a fire detection alarm 6. The tunnel 1 is divided into multiple smoke control zones 2 by the air curtain generating system 4 and the water curtain generating system 5. The air curtain generating system 4 and the water curtain generating system 5 are alternately arranged at the junctions of different smoke control zones 2 in the tunnel 1, and the smoke is controlled inside the smoke control zone 2 through the air curtain generating system and the water curtain generating system, so as to carry out the smoke exhaust operation.

[0033] Figure 2

[0032] is a cross-sectional view at the air curtain. The pipe network of the air curtain generating system 4 mainly consists of an air delivery pipeline 401 and an air curtain generating end 402. The air delivery pipeline 401 is arranged longitudinally along the tunnel 1 to provide air source for the air curtain generating end 402. The air curtain generating end 402 can spray to form an air curtain 7 covering the cross-section of the tunnel 1. The air delivery pipeline consists of a main pipeline arranged longitudinally along the tunnel and branch pipelines separately connected to each air curtain generating end. A control valve is provided at the inlet connection of each air curtain generating end. The controller adjusts the opening of the control valve to regulate the opening of the air curtain generating system and the air supply volume of the air curtain generating system. The air curtain is a slit-type air outlet, and the cross-section of the air outlet adopts a wedge-shaped design to achieve uniform air supply.

[0034] Figures 3 - 4 Figure 1 and are cross-sectional views of the air curtain for two-lane and three-lane respectively. The installation position of the air curtain air duct is determined according to the number of lanes. For a two-lane tunnel, the air curtain generating end 402 can be set only at the top to cover the entire cross-section of the tunnel; for a three-lane or a merging and diverging section, the air curtain generating ends 402 are respectively set at the top and both sides of the tunnel to form a "door" type layout.

[0035] Figure 5It is a cross-sectional view of the water curtain generating system. The pipe network of the water curtain generating system 5 mainly consists of a water supply pipeline 501 and a water curtain generating end 502. The water curtain generating end 502 can spray to form a water curtain 8 covering the cross-section of the tunnel 1. The water supply pipeline 501 is composed of a main water supply pipeline distributed longitudinally along the tunnel and branch pipelines connected to each water curtain generating end 502. The water curtain generating end can be arranged at the top of the tunnel. By applying pressure to the main water supply pipeline, water is ejected from the water curtain generating end. Due to the water pressure and gravity, the ejected water flow can cover the cross-section of the tunnel 1.

[0036] At the boundary of the smoke control zone 2, the air curtain generating ends 402 and the water curtain generating ends 502 are arranged in parallel and alternately. The arrangement scheme of the air curtain generating ends 402 and the water curtain generating ends 502 can be flexibly adjusted according to the specific project.

[0037] Preferably, multiple air curtain generating ends 402 and water curtain generating ends 502 are arranged alternately at the boundary. The air curtain generating ends can better isolate the flow of smoke to the upstream and downstream, forming a relatively sealed space, while the water curtain generating ends can reduce the temperature of the smoke and adsorb particulate matter, CO2, SO2 and other harmful substances in the smoke. By alternately arranging the air curtain generating ends 402 and the water curtain generating ends 502, compared with a single air curtain or water curtain, the isolation and cooling effects of the present invention are better, facilitating the further treatment of the fire and avoiding the harm of the fire to the personnel in the tunnel.

[0038] Figure 6 It is a schematic diagram of adjusting the air curtain air outlet angle according to pressure in the present application. Pressure sensors 9 are arranged on both sides of the air curtain generating end 402. When a fire is detected, the smoke control zone 2 where the fire is located is judged, and the pressure values of the pressure sensors 9 on both sides of the air curtain generating end 402 in the smoke control zone are compared. The angle of the air curtain air outlet is adjusted according to the magnitude of the pressure values on both sides: when the pressure on the fire source side is larger, it indicates that a negative pressure has not been formed at the smoke exhaust port. The combustion of the fire source causes the temperature to rise, the smoke to accumulate, and the pressure to rise. At this time, the angle of the air curtain air outlet is adjusted, and the air outlet blows air towards the outside of the fire source, and the air outlet forms an angle of 20° with the vertical direction; when the pressure on the fire source side is smaller, it indicates that a negative pressure has been formed at the smoke exhaust port, and the smoke is discharged through the smoke exhaust port, and the pressure at the fire source decreases. At this time, the angle of the air curtain air outlet is adjusted, and the air outlet blows air towards the fire source side, and the air outlet forms an angle of 20° with the vertical direction.

[0039] In one embodiment, two water curtain generating ends 502 and one air curtain generating end 402 are alternately arranged at the junction of the smoke control zones 2. The two water curtain generating ends 502 are arranged on the outer side, and the air curtain generating end 402 is in the middle of the two water curtain generating ends 502, forming a water curtain - air curtain - water curtain structure. The inner water curtain 8 can isolate part of the smoke. Since the temperature of the smoke is relatively high, heat exchange occurs between the smoke and the water curtain to reduce the temperature of the smoke. At the same time, the water curtain can adsorb some gases such as CO, CO2, and SO2 in the smoke. The air curtain 7 can better isolate the smoke due to the denser air jet. The outer water curtain 8 further serves to reduce the temperature of the smoke and prevent the smoke from leaking outwards.

[0040] The air curtain air outlet can select low - speed air supply and high - speed air supply, and different air supply wind speeds are adopted according to different stages of the fire.

[0041] Figure 7 It is a schematic diagram of the present invention for adjusting the air outlet speed according to the fire development situation. In one embodiment, two water curtain generating ends 502 and one air curtain generating end 402 are alternately arranged at the junction of the smoke control zones 2. The two water curtain generating ends 502 are arranged on the outer side, and the air curtain generating end 402 is in the middle of the two water curtain generating ends 502, forming a water curtain - air curtain - water curtain structure. The water curtain 8 near the fire source can isolate part of the smoke. Since the temperature of the smoke is relatively high, heat exchange occurs between the smoke and the water curtain to reduce the temperature of the smoke. At the same time, it can also adsorb some gases such as CO2 and SO2 in the smoke. The air curtain 7 can better isolate the smoke due to the denser air jet. The outer water curtain 8 further serves to reduce the temperature of the smoke and prevent the smoke from leaking outwards.

[0042] In this embodiment, CO concentration sensors 10 and temperature sensors 11 are arranged in each smoke control zone 2 in the tunnel. The development of the fire is judged through the CO concentration sensor 10 and the temperature sensor 11 in the smoke control zone where the fire occurs. When the CO concentration is less than or equal to the CO concentration threshold and the temperature is less than or equal to the temperature threshold, it is judged that this is the initial stage of the fire. At this time, the amount of fire smoke and the temperature are relatively low, and the air curtain air outlet can supply air at a low speed. When the CO concentration is greater than the CO concentration threshold or the temperature is greater than the temperature threshold, it is judged that the overall fire is very large, and the amount of fire smoke and the temperature are relatively high. The air curtain generating air outlet is controlled to supply air at a high speed.

[0043] In another embodiment, two air curtain generating ends 402 and one water curtain generating end 502 are alternately arranged at the junction of the smoke control zones 2. The two air curtain generating ends 402 are arranged on the outer side, and the water curtain generating end 502 is arranged between the two air curtain generating ends 402, forming a structure of air curtain - water curtain - air curtain. When a fire occurs, the air curtain 7 closer to the fire source can better isolate the smoke, preventing the high-temperature smoke and harmful gases from spreading to the upstream and downstream. The water curtain 8 can adsorb the particulate matter, CO2, SO2 and other harmful substances in the smoke, and the outer air curtain 7 further isolates the smoke, so as to prevent the smoke particles and harmful gases from spreading to other parts of the tunnel.

[0044] In this embodiment, a CO concentration sensor 10 and a temperature sensor 11 are arranged in each smoke control zone 2 in the tunnel. The development of the fire is judged by the CO concentration sensor 10 and the temperature sensor 11 in the smoke control zone where the fire occurs. When the CO concentration is less than or equal to the CO concentration threshold and the temperature is less than or equal to the temperature threshold, it is judged that this is the initial stage of the fire, the amount of fire smoke and the temperature are both low, and the air curtain air outlet can supply air at a low speed; when the CO concentration is greater than the CO concentration threshold and the temperature is less than or equal to the temperature threshold, or the CO concentration is less than or equal to the CO concentration threshold and the temperature is greater than the temperature threshold, it is judged that the overall fire situation is not large and relatively easy to control, and the air curtain close to the fire source is controlled to supply air at a high speed, and the air curtain not close to the fire source is controlled to supply air at a low speed; when the CO concentration is greater than the CO concentration threshold and the temperature is greater than the temperature threshold, it is judged that the overall fire situation is very large, and both air curtain generating air outlets are controlled to supply air at a high speed.

[0045] The present invention sets up smoke control zones, controls the smoke within the smoke control zones through the isolation effect of the air curtain and the water curtain, and absorbs and purifies the smoke through the components in the smoke purification unit 3, absorbing the particulate matter and harmful gases in the smoke, thus completely solving the harmful components in the smoke and avoiding the harm of the smoke in the tunnel to the personnel in the upstream and downstream.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above. For the sake of brevity, they are not provided in detail; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; 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 invention.

Claims

1. A gas-water curtain partition type tobacco control system, characterized in that: It includes a tunnel (1), a smoke control zone (2), a tunnel fire extinguishing system (3), an air curtain generating system (4), a water curtain generating system (5), and a fire detection and alarm device (6). The air curtain generating system (4) includes an air curtain generating terminal (402), and the water curtain generating system includes a water curtain generating terminal (502). Pressure sensors (9) are arranged on both sides of the air curtain generating terminal (402) to adjust the angle of the air curtain air outlet according to the pressures on both sides.

2. The air-water curtain partition type tobacco control system according to claim 1, wherein: The air curtain generating terminals (402) and the water curtain generating terminals (502) are alternately arranged at the junctions of different smoke control zones (2).

3. The air-water curtain partition type tobacco control system according to claim 1, characterized in that: A CO sensor (10) and a temperature sensor (11) are arranged in the tunnel. The development of the fire is judged through the CO sensor (10) and the temperature sensor (11), and the air velocity of the air curtain air outlet is controlled according to the development of the fire.

4. The air-water curtain partition type tobacco control system according to claim 2, characterized in that: Two water curtain generating terminals (502) and one air curtain generating terminal (402) are alternately arranged at the junction of the smoke control zone (2). The two water curtain generating terminals (502) are arranged on the outside, and one air curtain generating terminal (402) is in the middle of the two water curtain generating terminals (502), forming a water curtain - air curtain - water curtain structure.

5. The air-water curtain partition type tobacco control system according to claim 4, characterized in that: When the CO concentration is less than or equal to the CO concentration threshold and the temperature is less than or equal to the temperature threshold, it is judged that it is the initial stage of the fire, and the air curtain air outlet supplies air at a low speed; when the CO concentration is greater than the CO concentration threshold or the temperature is greater than the temperature threshold, the air curtain air outlet is controlled to supply air at a high speed.

6. The air-water curtain partition type tobacco control system according to claim 2, characterized in that: Two air curtain generating terminals (402) and one water curtain generating terminal (502) are alternately arranged at the junction of the smoke control zone (2). The two air curtain generating terminals (402) are arranged on the outside, and the water curtain generating terminal (502) is arranged in the middle of the two air curtain generating terminals (402), forming an air curtain - water curtain - air curtain structure.

7. The air-water curtain partition type tobacco control system according to claim 6, wherein: When the CO concentration is less than or equal to the CO concentration threshold and the temperature is less than or equal to the temperature threshold, the air curtain air outlet supplies air at a low speed; when the CO concentration is greater than the CO concentration threshold and the temperature is less than or equal to the temperature threshold, or the CO concentration is less than or equal to the CO concentration threshold and the temperature is greater than the temperature threshold, the air curtain air outlet close to the fire source is controlled to supply air at a high speed, and the air curtain air outlet not close to the fire source supplies air at a low speed; when the CO concentration is greater than the CO concentration threshold and the temperature is greater than the temperature threshold, the air curtain air outlets are controlled to supply air at a high speed.

8. The air-water curtain partition type tobacco control system according to claim 1, characterized in that: For a two - lane tunnel, the air curtain generating terminals (402) are only arranged at the top of the tunnel; for a three - lane tunnel or a merging and diverging section, the air curtain generating terminals (402) are arranged at the top and both sides of the tunnel.

9. The air-water curtain partition type tobacco control system according to claim 1, wherein: When the pressure on the fire - source side is relatively large, the angle of the air curtain air outlet is adjusted so that the air outlet blows air towards the outside of the fire source; when the pressure on the fire - source side is relatively small, the angle of the air curtain air outlet is adjusted so that the air outlet blows air towards the fire - source side.

10. The air-water curtain partition type smoke control system according to claim 9, characterized in that: The air outlet forms an angle of 20° with the vertical direction.

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