Movable tunnel water curtain system and control method thereof

Abstract

The invention relates to the field of tunnel fire prevention and control, and particularly discloses a movable tunnel water curtain system and a control method thereof.The system comprises a water curtain generating device used for generating water curtains on the two sides of a smoke control subarea, the water curtain generating device comprises a spraying pipe, a metal hose and a water supply pipe, and the spraying pipe and the water supply pipe are connected through the metal hose; the moving device comprises a track and a driving mechanism, and the driving mechanism drives the spraying pipe to do reciprocating translation along the track; the fire detection alarm is used for detecting the fire occurrence condition in the smoke control subarea in the tunnel; the multiple temperature detection sensors are longitudinally arranged at intervals along the top of the tunnel; and the controller is electrically connected with the driving mechanism of the water curtain generation device and the temperature detection sensor, and the controller adjusts the movement of the spraying pipe based on the temperature information. The movable water curtain system is introduced, the position can be automatically adjusted according to the position of a fire source, and accurate isolation of the fire source is achieved.

Description

Technical Field

[0001] This application belongs to the technical field of tunnel fire prevention and control, and specifically relates to a movable tunnel water curtain system and its control method. Background Art

[0002] In the modern urban transportation system, road tunnels and highway tunnels play an indispensable role. They not only effectively save urban transportation space, relieve traffic pressure, but also significantly shorten the distance between cities, greatly improving the efficiency and convenience of transportation. With the acceleration of urbanization and the growth of traffic demand, tunnel safety has gradually become the focus of public attention. Fires in tunnels are a common and serious safety hazard, which may lead to casualties and property losses. Therefore, the research and application of tunnel fire protection technology are of great significance for ensuring public safety and improving transportation efficiency.

[0003] As an important technology, the water curtain system is widely used in the prevention and control of tunnel fires. By installing water spraying devices inside the tunnel, once a fire occurs, the system can be automatically activated to spray water mist to form a water curtain, effectively isolating the spread of smoke and flames and providing a safe escape environment for people. However, traditional tunnel fire protection technologies mainly include fixed water curtain systems and fire alarm systems. Fixed water curtain systems are usually installed at fixed positions in the tunnel and form a water curtain by spraying water to isolate the spread of fire. However, such systems have limitations such as limited coverage and poor flexibility, and cannot effectively cope with the change of the fire source position in the tunnel and the rapid spread of the fire. At the same time, although traditional fire alarm systems can detect fires in a timely manner, they cannot accurately locate the fire source position, which limits the fire protection effect. Summary of the Invention

[0004] Aiming at the above defects or requirements for improvement of the existing technical solutions, the purpose of the present invention is to overcome the limitations of traditional tunnel fire protection technologies, and propose a movable tunnel water curtain system and its control method. By introducing a movable water curtain system, it can automatically adjust its position according to the fire source position to achieve precise isolation of the fire source. Compared with traditional fixed water curtain systems, the movable water curtain system has the advantages of wider coverage, faster response speed, and better protection effect.

[0005] To achieve the above object, the technical solution of the present invention is as follows: A movable tunnel water curtain system, which is used for the smoke control zones evenly distributed in the tunnel, includes a water curtain generating device for generating water curtains on both sides of the smoke control zone. The water curtain generating device includes a spray pipe, a metal hose, and a water supply pipe, and the spray pipe and the water supply pipe are connected by the metal hose; a moving device including a track and a driving mechanism, and the driving mechanism drives the spray pipe to reciprocate horizontally along the track; a fire detection alarm for detecting the occurrence of a fire in the smoke control zone in the tunnel; a plurality of temperature detection sensors longitudinally arranged at intervals along the tunnel top; a controller electrically connected to the driving mechanism of the water curtain generating device and the temperature detection sensors, and the controller adjusts the movement of the spray pipe based on the temperature information.

[0006] Preferably, the position information of each temperature detection sensor is pre-stored in the controller.

[0007] Preferably, the driving mechanism includes a motor, a lead screw, and a moving block. The moving block is fixedly connected to one end of the spray pipe. Under the drive of the motor, the lead screw rotates to drive the moving block to translate.

[0008] Preferably, the moving block further includes a track mating part which is matingly connected with the track. The track mating part includes a pulley, and the track includes a groove, and the pulley slides in the groove.

[0009] Preferably, the driving mechanism further includes limit switches arranged at both ends of the track. When the moving block touches the limit switches, the motor is controlled to stop running and a reverse program is started.

[0010] Preferably, a plurality of water curtain electric control nozzles are evenly arranged on the spray pipe.

[0011] Preferably, a high-temperature resistant and heat-insulating coating is provided on the surface of the spray pipe.

[0012] Preferably, the adjustable range of the spraying angle of the water curtain electric control nozzle is 30° - 90°, and the flow control accuracy of a single nozzle is ±5%.

[0013] Preferably, the initial distance between adjacent water curtains is 20 - 30 m.

[0014] Preferably, the water supply pipe includes a water distribution branch pipe and a water distribution loop pipe. The water distribution branch pipe is fixed on the side wall of the tunnel, and the water distribution branch pipe is connected to the water distribution loop pipe.

[0015] Preferably, the water distribution loop pipe is arranged in the top space of the internal maintenance passage or evacuation passage of the tunnel.

[0016] Preferably, one side of the water distribution loop pipe is arranged on the left line of the tunnel, and the other side is arranged on the right line of the tunnel.

[0017] The present invention also discloses a control method based on the above-mentioned movable tunnel water curtain system, including the following steps:

[0018] S1. When a fire detection alarm detects a fire in a certain smoke control zone in the tunnel, the water curtain generating devices on both sides of the smoke control zone where the fire source is located are activated to form a water curtain. At this time, the spray pipes on both sides are the first spray pipe and the second spray pipe, both located at the initial position.

[0019] S2. The controller obtains the temperature information detected by multiple temperature detection sensors and compares them.

[0020] S3. Obtain the position at the top of the tunnel where the temperature detection sensor with the highest measured temperature is located, and retrieve the target position corresponding to this temperature detection sensor pre-stored in the controller.

[0021] S4. Respectively judge whether the horizontal distance between the initial positions of the first spray pipe and the second spray pipe and this target position is greater than or equal to a preset value. If it is greater than or equal to the preset value, the controller controls the driving mechanism to start, and controls the spray pipe to move towards the direction of the obtained target position, and the moving distance is the preset value.

[0022] Preferably, in step S4, if it is judged that the horizontal distance between the initial position of any one of the spray pipes and this target position is less than the preset value, this spray pipe moves to directly above this target position, and the water curtain of the adjacent smoke control zone of this spray pipe is activated.

[0023] Preferably, it further includes step S5. When the fire alarm is lifted, the spray pipe returns to the initial position.

[0024] The beneficial effects of the present invention are as follows:

[0025] The movable tunnel water curtain system of the present invention can quickly respond to fire situations. By automatically adjusting the position of the water curtain, it can quickly move to near the fire source, effectively isolate smoke and flames, reduce the risk of fire spread, and greatly improve the fire emergency response ability in the tunnel; through the combined design of evenly distributed smoke control zones and a movable water curtain system, compared with traditional fixed water curtain systems, it has a wider coverage range and more comprehensive fire control, effectively reducing the harm of fire to the tunnel and its users; by adopting advanced fire source detection and positioning technologies, it can automatically identify the fire source position and accurately adjust the position of the water curtain device according to real-time temperature information to ensure that the water curtain always covers the fire source area, improving the accurate isolation ability and response speed to the fire source; through the pre-stored position information of temperature detection sensors and real-time detection data, it automatically judges the moving direction and distance of the spray pipe, reduces human intervention, and improves the operation efficiency and reliability of the system. Description of the Drawings

[0026] Figure 1Overall schematic diagram of the movable tunnel water curtain system shown in the embodiments of the present invention;

[0027] Figure 2 Connection schematic diagram of the water curtain generating device shown in the embodiments of the present invention;

[0028] Figure 3 Connection schematic diagram of the water curtain generating device from another angle shown in the embodiments of the present invention;

[0029] Figure 4 Schematic diagram of the moving block structure shown in the embodiments of the present invention;

[0030] Figure 5 Connection schematic diagram of the water supply pipe shown in the embodiments of the present invention;

[0031] Figure 6 Control flow chart of the control method for the movable tunnel water curtain system of the present invention.

[0032] Explanation of reference numerals: 1-smoke control zone, 2-water curtain generating device, 21-spray pipe, 22-metal hose, 23-water supply pipe, 24-water distribution branch pipe, 25-water distribution loop pipe, 3-water curtain, 4-rail, 41-groove, 5-driving mechanism, 51-motor, 52-screw rod, 53-moving block, 54-rail matching part, 55-pulley, 6-fire detection alarm, 7-temperature detection sensor. Detailed implementation manners

[0033] 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 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.

[0034] In addition, the described features, structures or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to give a full understanding of the embodiments of the present application. However, those skilled in the art will realize that the technical solutions of the present application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, well-known methods, devices, implementations or operations are not shown or described in detail to avoid obscuring various aspects of the present application.

[0035] Please refer to Figure 1, this embodiment provides a movable tunnel water curtain 3 system, which is used for the smoke control zone 1 in the tunnel. The smoke control zones 1 are evenly distributed in the tunnel. The movable tunnel water curtain 3 system includes a water curtain generating device 2, which is used to generate a water curtain 3 on both sides of the smoke control zone 1. When a fire occurs, an effective water curtain 3 can be quickly formed to isolate the fire source and control the spread of smoke, prevent the fire from spreading, thereby providing a safe escape environment and facilitating the control of the fire.

[0036] Please refer to Figures 2-4 , the water curtain generating device 2 includes a spray pipe 21, a metal hose 22 and a water supply pipe 23. A plurality of water curtain 3 electric control nozzles are evenly arranged on the spray pipe 21. By controlling the water curtain 3 electric control nozzles, the water spray amount and spraying range of the water curtain 3 can be flexibly adjusted. The spray pipe 21 and the water supply pipe 23 are connected by a metal hose 22. The metal hose 22 plays a key role in the water curtain generating device 2, facilitating the movement of the spray pipe 21. In addition, the metal hose 22 also has the characteristics of high temperature resistance and corrosion resistance, which enables the system to operate stably in a high temperature environment during a fire and be able to resist the corrosive substances that may be generated at the fire scene, ensuring the reliability and durability of the system.

[0037] The moving device includes a track 4 and a driving mechanism 5. The driving mechanism 5 drives the spray pipe 21 to reciprocate horizontally along the track 4. The spray pipe 21 can move within a certain range. By moving the spray pipe 21, it is ensured that the water curtain 3 can be flexibly adjusted in position to more precisely match the fire source position, improving the fire protection effect.

[0038] Please refer to Figure 1 , the fire detection alarm 6 is used to detect the occurrence of a fire in the smoke control zone 1 in the tunnel. Its function is to detect the fire in time and trigger the start of the water curtain 3 system. A plurality of temperature detection sensors 7 are longitudinally arranged at intervals along the tunnel top. By detecting the temperature change of the smoke, precise information about the location of the fire is provided. The controller is electrically connected to the driving mechanism 5 of the water curtain generating device 2 and the temperature detection sensors 7. Based on the temperature information, the movement of the spray pipe 21 is adjusted, and the position of the water curtain 3 can be precisely controlled according to the fire source position and the development of the fire situation, effectively isolating the fire source.

[0039] A storage part is provided in the controller, and the position information of each temperature detection sensor 7 is pre-stored. Specifically, a position information database of the temperature detection sensors 7 is established in the controller, recording the specific positions of each temperature detection sensor 7 on the tunnel top. During a fire, the controller can quickly and accurately locate the fire source position according to the real-time detected temperature information. By comparing the position information stored in the database, the specific position of the fire point can be quickly determined, thereby precisely controlling the movement of the spray pipe 21 to ensure that the water curtain 3 can cover the fire source area in time, prevent the fire from spreading, and improve the fire protection effect.

[0040] Please refer to Figures 2-4 , further, the driving mechanism 5 includes a motor 51, a lead screw 52 and a moving block 53. One end of the spray pipe 21 is fixedly connected to the moving block 53. Driven by the motor 51, the lead screw 52 rotates to drive the moving block 53 to translate. A nut portion that cooperates with the lead screw 52 is provided in the moving block 53. The translation of the spray pipe 21 is realized through the driving form of the motor 51 and the lead screw 52, enabling it to move within the smoke control zone 1 along the track 4 fixed in the tunnel, so as to ensure that the water curtain 3 can cover the fire source position and prevent the spread of the fire. The moving block 53 further includes a track engaging portion 54, and the track engaging portion 54 is engaged and connected with the track 4. The track engaging portion 54 includes a pulley 55, and the track 4 includes a groove 41. The pulley 55 slides in the groove 41. The track engaging portion 54 matches the track 4 and can perform sliding. The moving block 53 also includes a track engaging portion 54. By the pulley 55 sliding in the groove 41 of the track 4, the movement of the moving block 53 is made more stable, the frictional resistance is reduced, and the operating efficiency and stability of the system are improved. The driving mechanism 5 further includes limit switches provided at both ends of the track 4. When the moving block 53 touches the limit switches, the motor 51 is controlled to stop running and the reverse program is started. This structure can ensure that the spray pipe 21 will not exceed the set range when moving on the track 4, prevent the spray pipe 21 from interfering and colliding with the track 4 due to excessive movement, improve the safety and stability of the system operation, and at the same time, through the feedback signal of the limit switches, the motor 51 can be controlled to start the reverse program to make the spray pipe 21 return in the reverse direction.

[0041] A plurality of water curtain electric control nozzles are uniformly arranged on the spray pipe 21, and a high-temperature resistant and heat-insulating coating is provided on the surface of the spray pipe 21. The high-temperature resistant and heat-insulating coating can effectively improve the heat resistance performance of the spray pipe 21, avoid the spray pipe 21 from deforming, aging or the material performance decreasing in a high-temperature environment, improve the service life of the system, and ensure the stable operation of the water curtain device during a fire. The adjustable range of the spraying angle of the water curtain electric control nozzle is 30° - 90°. This design allows the spraying angle of the water curtain electric control nozzle to be adjusted within the range of 30° - 90° to adapt to different tunnel heights and spatial structures, so that the water curtain 3 can more effectively cover the fire source, improve the fire extinguishing effect, and enhance the isolation ability for flames and smoke. In addition, the flow control accuracy of a single nozzle is ±5%, which ensures that the water curtain system can accurately control the water output of each nozzle, ensures the stability and uniformity of the water curtain, and avoids the decline of the smoke control effect or the waste of water resources caused by uneven water volume.

[0042] Furthermore, the initial distance between adjacent water curtains 3 is 20 - 30 m. The initial distance is also equivalent to the length of the smoke control zone 1. An overly long initial distance will result in too large a distance between adjacent water curtains 3, reducing the effect of fire protection in the tunnel. An overly short initial distance will cause too high costs for equipment and waste of water resources. The 20 - 30 m initial distance can ensure the efficient operation and economy of the water curtain 3 system.

[0043] Please refer to Figure 5 , the water supply pipe 23 includes a water distribution branch pipe 24 and a water distribution loop pipe 25. The water distribution branch pipe 24 is fixed to the side wall of the tunnel. The water distribution branch pipe 24 is connected to the water distribution loop pipe 25. The water distribution loop pipe 25 is arranged in the top space of the internal maintenance passage or evacuation passage of the tunnel. One side of the water distribution loop pipe 25 is arranged on the left line of the tunnel, and the other side is arranged on the right line of the tunnel. The advantage of this layout design is that it does not interfere with the basic structure and use of the tunnel, and at the same time is convenient for daily inspection and maintenance. Especially when it is located at the top of the tunnel, it can achieve automatic spraying under the action of gravity. The water distribution loop pipe 25 is arranged along the left line and right line of the tunnel. Such a layout can achieve an effective cycle with the water source. This cyclic layout has multiple advantages. First of all, it ensures the uniform distribution of water pressure and water flow throughout the length of the tunnel. No matter where a fire occurs in the tunnel, the water curtain 3 can be quickly and evenly deployed. Secondly, this arrangement improves the reliability of the system. Even if part of the loop fails, other parts can still maintain normal operation to ensure the continuous water supply of the water curtain 3 device. Through the cooperation of the loop and the layout of the left line and right line of the tunnel, the water supply system can effectively maintain a stable water flow supply. In the event of a fire, this stable water flow supply is crucial for quickly controlling the fire and smoke. In addition, this design also helps to reduce the pressure loss of the water flow during long-distance transportation, so as to maintain the best working state of the water curtain 3 device.

[0044] Please refer to Figure 6 , another embodiment of the present invention proposes a control method for the above-mentioned movable tunnel water curtain 3 system, which is characterized by including the following steps:

[0045] S1, when the fire detection alarm 6 detects a fire in a certain smoke control zone 1 in the tunnel, turn on the water curtain generating devices 2 on both sides of the smoke control zone 1 where the fire source is located to form a water curtain 3. At this time, the spray pipes 21 on both sides are the first spray pipe and the second spray pipe, both located at the initial position;

[0046] The above steps quickly respond in the initial stage of the fire, timely start the water curtain 3 system, form an effective water curtain 3 to isolate the fire source, prevent the spread of the fire, and reduce the impact of the fire on the internal environment of the tunnel and the escape of personnel.

[0047] S2, the controller obtains the temperature information detected by multiple temperature detection sensors 7 and makes a comparison;

[0048] The above steps determine the approximate range of the fire source location and the intensity of the fire by real-time monitoring and analyzing the temperature information detected by multiple temperature detection sensors 7 in the smoke control zone 1 where the fire occurs, and provide data support for the subsequent movement control of the sprinkler pipe 21.

[0049] S3, obtaining the position of the top of the tunnel where the temperature detection sensor 7 with the highest measured temperature is located, and calling the target position corresponding to the temperature detection sensor 7 pre-stored in the controller;

[0050] The purpose of the above steps is to determine the location of the fire source through the pre-stored position information of the temperature detection sensor 7, and to provide an accurate target position for the subsequent movement of the sprinkler pipe 21, and the target position is the determined fire source position.

[0051] S4, respectively determine whether the horizontal distance between the initial position of the first spray pipe and the second spray pipe and the target position is greater than or equal to a preset value. If so, the controller controls the drive mechanism 5 to start and controls the spray pipe 21 to move toward the acquired target position, and the moving distance is a preset value.

[0052] In the above steps, it is determined whether the horizontal distance between the initial position of the first sprinkler pipe and the second sprinkler pipe and the target position is greater than or equal to the preset value. If it is greater than the preset value, it indicates that the position of the sprinkler pipe 21 is far away from the fire source. The sprinkler pipe 21 can be driven to move toward a position closer to the fire source. The moving distance is also limited by the length of the track 4, and the moving distance is a preset value.

[0053] Furthermore, in step S4, if it is determined that the horizontal distance between the initial position of any of the sprinkler pipes 21 and the target position is less than a preset value, the sprinkler pipe 21 is moved to the top of the target position, and the water curtain 3 of the adjacent smoke control partition 1 of the sprinkler pipe 21 is started. When the horizontal distance is less than the preset value, it indicates that the fire source is within the coverage of the sprinkler pipe 21, and the sprinkler pipe 21 can be moved to the target position to ensure that the water curtain 3 can effectively spray to the fire source position to prevent the fire from spreading, and the water curtain 3 of the adjacent smoke control partition 1 of the sprinkler pipe 21 is used to further enhance the fire isolation effect and improve the efficiency of fire protection.

[0054] The process further includes step S5, in which the sprinkler pipes 21 return to their initial positions when the fire alarm is lifted. The purpose of this step is to restore the water curtain 3 system to its initial state after the fire is controlled in time, when the sprinkler pipes 21 are distributed between the smoke control zones 1 again.

[0055] For example, in a certain embodiment, the initial distance of the water curtain 3 is 25m, and the moving range of the sprinkler pipe 21 is 10m. At this time, the preset value is 5m, that is, the sprinkler pipe 21 can move 5m from the initial position to both sides. If it is detected that the horizontal distance between the initial position of the first sprinkler pipe and the second sprinkler pipe and the fire source position is greater than 5m, the first sprinkler pipe and the second sprinkler pipe are driven to move horizontally 5m toward the fire source position. If the horizontal distance between the first sprinkler pipe and the fire source position is greater than 5m, and the horizontal distance between the second sprinkler pipe and the fire source position is less than 5m, the first sprinkler pipe moves horizontally 5m toward the fire source position, and the second sprinkler pipe moves to the target position directly above, that is, directly above the fire source position. At the same time, the water curtain 3 of the adjacent smoke control zone 1 of the second sprinkler pipe is opened. When the fire alarm is lifted, the sprinkler pipe 21 returns to the initial position, that is, the middle position of the moving range.

[0056] In some embodiments, in order to adapt to possible changes in fire conditions, in step S2, the temperature information is re-detected every 10 minutes. If the temperature detection sensor 7 corresponding to the highest temperature information is found to have changed during these periodic detections, that is, the location of the fire source has moved or the intensity of the fire has changed in different areas, the water curtain 3 system will readjust the position of the sprinkler pipe 21, first reset the sprinkler pipe 21 to its initial position, and then proceed to steps S3 and S4. The purpose of setting up this dynamic adjustment mechanism is to ensure that as the fire situation develops, the water curtain 3 sprinkler system can continue to effectively aim at the areas that need fire extinguishing and smoke control the most, thereby achieving more efficient fire control and smoke isolation effects.

[0057] In some embodiments, the metal hose 22 is connected to the water supply pipe 23, and is connected to the spray pipe 21 after being bent twice. Both bends are passed through an "8"-shaped ring fixed on the water supply pipe 23. This ensures that when the spray pipe 21 moves, the metal hose 22 can be smoothly stretched under the guidance of the ring. A counterweight block is also provided at the lower part of the metal hose 22 to facilitate the resetting of the spray pipe 21 to its initial position.

[0058] In summary, the present invention discloses a movable tunnel water curtain 3 system and its control method, which are designed to improve the fire protection effect in the tunnel and ensure the safety of tunnel use. The system includes core components such as a water curtain generating device 2, a moving device, a fire detection alarm 6, a temperature detection sensor 7, and a controller. The water curtain generating device 2 can quickly generate a water curtain 3, and the moving device can automatically adjust the position of the water curtain 3 device according to the fire source position to ensure that the water curtain 3 covers the fire source area, effectively isolating smoke and flames. The system is flexible in operation, can quickly respond to fire situations, and reduce the risk of fire spread. At the same time, the temperature change inside the tunnel is monitored in real time through the temperature detection sensor 7, and the controller can accurately adjust the position of the water curtain 3 device according to the temperature information, improving the intelligence level of the system. In addition, the present invention also considers details such as the layout of the water supply pipe 23 and the design of the metal hose 22, making the system more stable and reliable during operation. Generally speaking, the present invention has many advantages such as flexibility, high efficiency, and economy, can provide strong support for fire emergency handling in the tunnel, and ensure the safety of the tunnel and its users.

[0059] The above drawings are only schematic illustrations of the processes included in the method according to the exemplary embodiments of the present application, and are not for limiting purposes. It is easy to understand that the processes shown in the above drawings do not indicate or limit the time sequence of these processes. Additionally, it is also easy to understand that these processes can be executed, for example, synchronously or asynchronously in multiple modules.

[0060] It should be understood that the present application is not limited to the exact structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A movable tunnel water curtain system, which is used for a smoke control zone (1) evenly distributed in a tunnel, and is characterized in that, It includes a water curtain generating device (2) for generating water curtains (3) on both sides of a smoke control zone. The water curtain generating device (2) includes a spray pipe (21), a metal hose (22), and a water supply pipe (23). The spray pipe (21) and the water supply pipe (23) are connected by the metal hose (22); a moving device, including a track (4) and a driving mechanism (5). The driving mechanism (5) drives the spray pipe (21) to reciprocate horizontally along the track; a fire detection and alarm device (6) for detecting the occurrence of a fire in the smoke control zone inside the tunnel; temperature detection sensors (7) arranged longitudinally at intervals along the top of the tunnel; a controller electrically connected to the driving mechanism (5) of the water curtain generating device and the temperature detection sensors (7). The controller adjusts the movement of the spray pipe based on temperature information.

2. The movable tunnel water curtain system according to claim 1, wherein: Position information of each temperature detection sensor (7) is pre-stored in the controller.

3. The movable tunnel water curtain system according to claim 1, characterized in that: The driving mechanism (5) includes a motor (51), a lead screw (52), and a moving block (53). The moving block (53) is fixedly connected to one end of the spray pipe (21). Under the drive of the motor (51), the lead screw (52) rotates to drive the moving block (53) to translate.

4. The movable tunnel water curtain system according to claim 3, characterized in that: The moving block (53) further includes a track matching part (54). The track matching part (54) is connected to the track (4) in a matching manner. The track matching part (54) includes a pulley (55). The track includes a groove (41). The pulley (55) slides in the groove (41).

5. The movable tunnel water curtain system according to claim 4, wherein: The driving mechanism (5) further includes limit switches arranged at both ends of the track. When the moving block (53) touches the limit switches, the motor (51) is controlled to stop running and a reverse program is started.

6. The movable tunnel water curtain system according to claim 1, characterized in that: A plurality of water curtain electric control nozzles are uniformly arranged on the spray pipe (21).

7. The movable tunnel water curtain system according to claim 6, characterized in that: A high-temperature resistant and heat-insulating coating is provided on the surface of the spray pipe (21).

8. The movable tunnel water curtain system according to claim 6, characterized in that: The adjustable range of the spraying angle of the water curtain electric control nozzle is 30° - 90°, and the flow control accuracy of a single nozzle is ±5%.

9. The movable tunnel water curtain system according to claim 1, characterized in that: The initial distance between adjacent water curtains (3) is 20 - 30m.

10. The movable tunnel water curtain system according to claim 1, wherein: The water supply pipe (23) includes a water distribution branch pipe (24) and a water distribution loop pipe (25). The water distribution branch pipe (24) is fixed on the side wall of the tunnel. The water distribution branch pipe (24) is connected to the water distribution loop pipe (25).

11. The movable tunnel water curtain system according to claim 10, characterized in that: The water distribution loop pipe (25) is arranged in the top space of the internal maintenance passage or evacuation passage inside the tunnel.

12. The movable tunnel water curtain system according to claim 10, characterized in that: One side of the water distribution loop pipe (25) is arranged on the left line of the tunnel, and the other side is arranged on the right line of the tunnel.

13. A control method for a movable tunnel water curtain system according to any one of claims 1-12, characterized in that, It includes the following steps: S1. When the fire detection and alarm device (6) detects a fire in a certain smoke control zone (1) inside the tunnel, the water curtain generating devices (2) on both sides of the smoke control zone (1) where the fire source is located are turned on to form water curtains (3). At this time, the spray pipes (21) on both sides are the first spray pipe and the second spray pipe, and both are in the initial position. S2. The controller obtains the temperature information detected by a plurality of temperature detection sensors (7) and makes comparisons. S3. Obtain the position at the top of the tunnel where the temperature detection sensor (7) with the highest measured temperature is located, and retrieve the target position corresponding to this temperature detection sensor (7) pre-stored in the controller. S4, respectively determining whether the horizontal distance between the initial position of the first spray pipe and the second spray pipe and the target position is greater than or equal to a preset value; if so, the controller controls the driving mechanism (5) to start, and controls the spray pipe (21) to move in the direction of the acquired target position, and the moving distance is the preset value.

14. The control method according to claim 13, wherein In step S4, if it is determined that the horizontal distance between the initial position of any one of the spray pipes (21) and the target position is less than a preset value, the spray pipe (21) is moved to directly above the target position, and the water curtain (3) of the adjacent smoke control partition (1) of the spray pipe (21) is started to open.

15. The control method according to claim 14, characterized in that, The method further comprises step S5, wherein when the fire alarm is relieved, the sprinkler pipe (21) returns to the initial position.

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