Tunnel opening air-water curtain flexible partition early warning system and early warning method

Abstract

The invention relates to the field of tunnel fire prevention and control, and particularly discloses a tunnel opening air-water curtain flexible partition early warning system and early warning method.The tunnel opening air-water curtain flexible partition early warning system comprises a water curtain generation device, an air curtain generation device, a light sensor, a dyeing device, a laser projector and a controller, and the dyeing device is used for adding a coloring agent into the water curtain generation device to change the color of a water curtain; the controller, the water curtain generation device, the air curtain generation device, the light sensor, the dyeing device and the laser projector are electrically connected, and the controller controls the flow of the water curtain generation device and the air curtain generation device and the starting and stopping of the dyeing device based on the information of the light sensor. By using the water curtain and the dyeing device, high visibility of the water curtain reminding mark can be kept under different illumination conditions, emergency information can be better transmitted, and the effectiveness of emergency early warning is improved.

Description

Technical Field

[0001] This application belongs to the technical field of prevention and control of tunnel fires, and specifically relates to an air-water curtain flexible partition warning system and warning method at the tunnel entrance. Background Art

[0002] In recent years, tunnel safety has become an important part of traffic safety management. In case of emergencies such as fires or other dangerous situations, it is crucial to effectively notify and prevent vehicles from entering the tunnel. Currently, a relatively common solution is to install a water curtain system at the tunnel entrance, in conjunction with a laser projection device. The tunnel operation control platform activates the water curtain and the laser projection lights when needed, and the latter projects images or text (such as "Stop") onto the water curtain to warn the driver.

[0003] However, this system has certain limitations in practical applications. The most significant problem is the transparency of the water curtain itself. In daytime or strong light environments, the visibility of the transparent water curtain is greatly reduced, making it difficult for the driver to clearly identify the projected content. This problem is particularly obvious at the tunnel entrance under direct sunlight, thus reducing the effect of safety warnings. Therefore, there is an urgent problem to be solved, that is, how to maintain high visibility of the water curtain projection under different lighting conditions to ensure that the driver can receive emergency information in a timely and clear manner. 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 provide an air-water curtain flexible partition warning system and warning method at the tunnel entrance, aiming to improve the visibility of the water curtain under different lighting conditions, so as to ensure the effective transmission of information and the safety of the driver in case of emergencies.

[0005] To achieve the above purpose, the technical solution of the present invention is as follows: An air-water curtain flexible partition warning system for fire warning at the tunnel entrance, comprising:

[0006] A water curtain generating device, including a water supply pipeline, a first water distribution pipe and a second water distribution pipe, for generating two water curtains;

[0007] An air curtain generating device, for generating an air curtain, the air curtain is located between the water curtains, and the air curtain and the water curtain together form an air

[0008] - water curtain flexible partition;

[0009] A light sensor, for detecting the light condition at the tunnel entrance;

[0010] A dyeing device, which is arranged on the first water distribution pipe, for adding a dyeing agent to the water curtain generating device to change the color of the water curtain;

[0011] A laser projector is installed on the inner wall of the tunnel entrance, maintaining a certain distance from the water curtain, and is used to project a warning sign onto the water curtain formed by the first water distribution pipe.

[0012] A controller is electrically connected to the water curtain generating device, the air curtain generating device, the light sensor, the dyeing device, and the laser projector. The controller controls the flow rates of the water curtain generating device and the air curtain generating device, as well as the opening and closing of the dyeing device, based on the information from the light sensor.

[0013] The present invention combines an air curtain and a water curtain to form a more efficient tobacco control partition system. This structure not only improves the safety of the tunnel entrance but also increases the flexibility of the system in dealing with different emergency situations. After introducing the light sensor, by using the light sensor to detect the light conditions at the tunnel entrance, the working states of the water curtain and the air curtain can be automatically adjusted according to the ambient light, improving the adaptability and efficiency of the system. By introducing a dyeing device into the water curtain system, the color of the water curtain can be changed according to the light conditions, thereby maintaining high visibility under different lighting conditions, especially in a strong light environment. The controller of the present invention can intelligently adjust the flow rates of the water curtain and the air curtain and the opening and closing of the dyeing device according to the data of the light sensor, achieving a high degree of adaptation to the environmental changes at the tunnel entrance.

[0014] Preferably, a first solenoid valve and a second solenoid valve are respectively arranged at the connection points of the water supply pipeline with the first water distribution pipe and the second water distribution pipe.

[0015] Preferably, the dyeing device includes an ink cartridge and a drip tube. The drip tube is connected to the first water distribution pipe, and a one-way solenoid valve is arranged on the drip tube.

[0016] Preferably, the drip tube and the first water distribution pipe are in threaded fit.

[0017] Preferably, the dyeing device includes a bypass pipe. A third solenoid valve and a fourth solenoid valve are arranged on the bypass pipe, and an ink sac is arranged inside the bypass pipe. The ink sac is located between the third solenoid valve and the fourth solenoid valve.

[0018] Preferably, a detachable cover is arranged on the bypass pipe, and the ink sac is fixed in the cover.

[0019] Preferably, when the light sensor detects that the light is greater than a first threshold value, the controller controls the dyeing device to open.

[0020] Preferably, when the light sensor detects that the light is less than a second threshold value, the controller controls the dyeing device to close.

[0021] The present invention also discloses a warning method based on the above air-water curtain flexible partition warning system, including the following steps:

[0022] S1: When a fire breaks out in a certain smoke control zone in the tunnel, the controller sends a start signal to the water curtain generating device, the air curtain generating device, the light sensor, and the laser projector to form a water curtain and an air curtain. The laser projector projects on the water curtain to form a reminder sign at the tunnel entrance, and the tunnel suspends traffic.

[0023] S2: When the light sensor detects that the light is greater than the first threshold, the controller controls the dyeing device to turn on, simultaneously reduces the water flow rate of the first water distribution pipe, increases the water flow rate of the second water distribution pipe, and increases the air flow rate of the air curtain generating device.

[0024] S3: When the light sensor detects that the light is less than the second threshold, the controller controls the dyeing device to turn off and restores the initial flow rates of the water curtain generating device and the air curtain generating device.

[0025] S4: When the fire information in the tunnel is lifted, the controller sends a shutdown signal to the water curtain generating device, the air curtain generating device, the light sensor, and the laser projector, and the tunnel resumes traffic.

[0026] Preferably, in step S2, the flow rate of the water supply pipeline remains constant.

[0027] The beneficial effects of the present invention are as follows:

[0028] (1) By using an air-water curtain flexible partition at the tunnel entrance, the present invention can effectively warn and prevent vehicles from entering the tunnel in case of emergency, thus improving the safety of the tunnel. By using the dyeing device and the laser projector, the high visibility of the water curtain reminder sign can be maintained under different lighting conditions, effectively conveying emergency information. Through the intelligent controller, the automatic adaptation to the tunnel entrance environment is realized, effectively responding to different lighting and fire situations, and improving the response speed and accuracy of the system. In addition, the design of the present invention allows for flexible adjustment of the working states of the water curtain and the air curtain under different circumstances, enhancing the applicability of the system under various environmental conditions.

[0029] (2) Through the innovative design of the dyeing device, maintenance and replacement become easier and faster. The drip ink method provides the advantages of fast response and precise control, while the bypass pipe dyeing method provides a uniform dyeing effect and stronger flexibility. Both methods enable the water curtain system to maintain high visibility under different lighting conditions, while simplifying the maintenance and operation of the system. Description of the Drawings

[0030] Figure 1 For the three-dimensional installation view of the air curtain and the water curtain shown in the embodiment of the present invention;

[0031] Figure 2 For the structural schematic diagram of the first embodiment of the dyeing device of the present invention;

[0032] Figure 3This is a schematic structural diagram of the second embodiment of the dyeing device of the present invention.

[0033] Figure 4 This is a schematic structural diagram of the warning system of the present invention;

[0034] Figure 5 This is a control flowchart of the warning method of the present invention.

[0035] Explanation of reference numerals: 1 - water curtain generating device, 11 - water supply pipeline, 12 - first water distribution pipe, 13 - second water distribution pipe, 14 - first solenoid valve, 15 - second solenoid valve, 2 - air curtain generating device, 3 - light sensor, 4 - dyeing device, 41 - ink cartridge, 42 - drip tube, 43 - one-way solenoid valve, 44 - bypass pipe, 45 - third solenoid valve, 46 - fourth solenoid valve, 47 - ink sac, 5 - laser projector, 6 - controller. Detailed implementation manners

[0036] 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.

[0037] 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.

[0038] Please refer to Figures 1-4 , this embodiment provides an air-water curtain flexible partition warning system, which is particularly suitable for fire warning at the tunnel entrance.

[0039] The water curtain generating device 1 includes a water supply pipeline 11, a first water distribution pipe 12 and a second water distribution pipe 13. The first water distribution pipe 12 and the second water distribution pipe 13 are connected to the water supply pipeline 11. First solenoid valves 14 and second solenoid valves 15 are respectively arranged at the connection points of the water supply pipeline 11 with the first water distribution pipe 12 and the second water distribution pipe 13. Through these pipelines, the system can generate two water curtains, which are respectively supplied with water by the first and second water distribution pipes. These water curtains form a flexible partition at the tunnel entrance to prevent vehicles from entering in case of emergency.

[0040] The air curtain generating device 2 is used to generate an air curtain, which is designed to be located between two water curtains. The air curtain and the water curtain act together to form a more stable air-water curtain flexible partition, enhancing the overall effect of the partition.

[0041] The light sensor 3 is installed at the tunnel entrance and is used to monitor the light conditions at the tunnel entrance in real time. The data of the sensor is used to adjust the operating states of the water curtain and the air curtain to adapt to different ambient light conditions.

[0042] The dyeing device 4 is arranged on the first water distribution pipe 12 and is used to add a dyeing agent to the water curtain generating device 1. The addition of the dyeing agent can change the color of the water curtain according to the intensity of the ambient light, so as to maintain high visibility under different light conditions.

[0043] When choosing the dyeing agent, non-toxic and environmentally friendly materials should be selected. In addition, water solubility and color stability should also be considered, which will not cause nozzle blockage and are not easily faded or discolored due to sunlight or chemical substances in water. Optional dyeing agent substances include activated carbon powder (food grade), squid ink or algae extract dyes, etc. These natural dyes are usually environmentally friendly. It should be noted that the dyeing agent is preferably black, but it can also be other dark colors.

[0044] The laser projector 5 is installed on the inner wall of the tunnel entrance and keeps a certain distance from the water curtain. When the water curtain is started, the projector projects reminder signs, such as "Stop" or other emergency information, onto the water curtain formed by the first water distribution pipe to warn the driver.

[0045] The controller 6 is electrically connected to the water curtain generating device 1, the air curtain generating device 2, the light sensor 3, the dyeing device 4 and the laser projector 5. The controller 6 adjusts the flow rates of the water curtain generating device 1 and the air curtain generating device 2 based on the information of the light sensor 3, and controls the opening and closing of the dyeing device 4. In this way, the early warning system can automatically adjust the color and density of the water curtain according to the real-time light conditions to ensure the clear display of emergency information.

[0046] The air-water curtain flexible partition early warning system can automatically monitor and respond. When an emergency such as a fire is detected, the system will be immediately started to form an air-water curtain partition, and project and display emergency warning information through the laser projector 5, so as to prevent vehicles from entering the tunnel in time and ensure the safety of personnel.

[0047] Please refer to Figure 2, in one embodiment, the ink cartridge 41 serves as the main storage unit for the dyeing agent and is designed to hold a sufficient amount of ink. The ink cartridge 41 has a refillable feature, enabling convenient refilling after the ink is used up. The drip tube 42 is located at the lower end of the ink cartridge 41 and is responsible for accurately delivering the ink into the first water distribution pipe 12. The connection design between the drip tube 42 and the ink cartridge 41 ensures the smooth flow of the ink while preventing leakage. A one-way solenoid valve 43 is provided on the drip tube 42, and its main function is to control the dripping process of the ink, ensuring that the ink is released as needed while preventing water from flowing back into the ink cartridge. The drip tube 42 and the first water distribution pipe 12 are connected by a threaded fit, which not only ensures a firm connection between the two but also facilitates future maintenance and replacement work. To facilitate the outflow of ink droplets, a pressure control valve can be provided on the ink cartridge 41. This valve can adjust the pressure inside the ink cartridge to ensure that the ink can be evenly and stably dripped into the first water distribution pipe 12 under different conditions.

[0048] Please refer to Figure 3 , in another embodiment, the dyeing device includes a bypass pipe 44. The bypass pipe 44 is designed to branch out from the main water pipeline of the first water distribution pipe 12 for guiding a part of the water flow into the dyeing area. A third solenoid valve 45 and a fourth solenoid valve 46 are provided on the bypass pipe 44. When the third solenoid valve 45 and the fourth solenoid valve 46 are opened simultaneously, a part of the water flow is guided to flow through the bypass pipe 44, and after being dyed, it converges back into the main pipeline. The ink sac 47 is placed inside the bypass pipe 44, between the third solenoid valve 45 and the fourth solenoid valve 46. This arrangement ensures that the water flow can effectively contact the ink sac 47 when passing through the bypass pipe 44. The ink sac 47 is designed as an elastic sac. There are holes on the elastic sac, and the interior contains the dyeing agent. Under the impact of the water flow, the elastic sac will be squeezed, thereby releasing the dyeing agent and evenly mixing it into the water flowing through the bypass pipe. A detachable cover is provided on the bypass pipe, and the ink sac is fixed in the detachable cover. When the dyeing agent is exhausted or the ink sac needs to be replaced, the operator can easily open the cover for replacement.

[0049] In some embodiments, the light sensor 3 is configured to monitor the light intensity at the water curtain at the tunnel entrance in real time. This sensor can precisely detect changes in ambient light and transmit data to the controller 6. The controller 6 automatically controls the activation or deactivation of the dyeing device 4 based on the data from the light sensor 3. Specifically, when the light sensor 3 detects that the light intensity is greater than the first threshold, the controller 6 activates the dyeing device 4 to enhance the color of the water curtain, thereby improving the projection effect. Conversely, when the light intensity is less than the second threshold, the controller turns off the dyeing device 4 because the brightness condition at this time is sufficient to support clear projection. The first threshold is set as a relatively high light intensity value to indicate the need for dyeing under strong light conditions. The second threshold is set as a relatively low value to indicate that no dyeing is required under weak light conditions. There is a buffer interval between the first threshold and the second threshold. This interval is set to avoid frequent opening and closing of the dyeing device when the light intensity fluctuates, thereby increasing the stability and efficiency of the system. By intelligently controlling the opening and closing of the dyeing device 4, the system can automatically adapt to different lighting conditions and ensure the clarity and visibility of the water curtain projection. The light intensity can be measured in lux (Lux). When setting the thresholds, the actual application environment and requirements need to be considered, and the most appropriate values can be determined through multiple tests.

[0050] See Figure 5 , another embodiment of the present invention describes an operation method of the air-water curtain flexible partition warning system at the tunnel entrance based on the above. This method covers a series of steps from fire detection to the tunnel returning to normal traffic. The following are the specific operation steps:

[0051] S1: When a fire occurs in a certain smoke control zone in the tunnel, the controller immediately responds and sends start signals to the water curtain generating device, air curtain generating device, light sensor, and laser projector. The water curtain and air curtain are then formed to constitute the flexible partition at the tunnel entrance. The laser projector projects an emergency stop or other relevant reminder signs on the water curtain to warn the driver that an emergency has occurred in the tunnel and traffic should be suspended.

[0052] S2: The light sensor continuously monitors the light intensity at the tunnel entrance. When it detects that the light intensity is greater than the set first threshold, the controller instructs the dyeing device to turn on. This operation aims to enhance the color of the water curtain to improve the visibility of the laser projection. At the same time, the controller adjusts the water flow rate of the first water distribution pipe to decrease. Moderately slowing down the water flow rate can ensure a better dyeing effect. At the same time, the water flow rate of the second water distribution pipe is increased, and the air flow rate of the air curtain generating device is also increased accordingly to enhance the partition effect of the air-water curtain partition and avoid interference of tunnel smoke on the projection.

[0053] S3: When the light sensor detects that the light intensity is lower than the set second threshold, the controller instructs the dyeing device to close because, under weaker lighting conditions, the original water curtain color is sufficient to ensure the clarity of the projection. At the same time, the water curtain generating device and the air curtain generating device return to their initial flow rate settings to adapt to the current lighting conditions.

[0054] S4: Once the fire situation in the tunnel is lifted, the controller immediately sends a closing signal to the water curtain generating device, the air curtain generating device, the light sensor, and the laser projector. With the shutdown of these devices, the air-water curtain partition at the tunnel entrance is removed, and the tunnel resumes normal traffic.

[0055] In addition, in step S2, the flow rate of the water supply pipeline remains constant, so there is no need to increase the water intake of the entire system, thus simplifying the control process. The controller only needs to adjust the relative flow rates allocated to the first water distribution pipe and the second water distribution pipe, rather than the flow rate of the entire system.

[0056] Through the above steps, the tunnel air-water curtain flexible partition warning system of the present invention can effectively provide an immediate warning when a fire occurs in the tunnel, and at the same time, intelligently adjust the states of the water curtain and the air curtain according to the change of ambient light to ensure the clear visibility of the laser projection mark. This system not only improves the safety of the tunnel but also reduces unnecessary energy consumption through intelligent control and enhances the operation efficiency.

[0057] The present invention combines a water curtain and an air curtain to create an effective partition at the tunnel entrance, which prevents vehicles from entering in case of emergencies such as fires, thus significantly improving the safety of the tunnel. Automatically adjust the states of the water curtain and the air curtain, as well as the operation of the dyeing device, according to the data of the light sensor, so as to ensure the best visibility and effect under various lighting conditions. The light sensor can automatically adjust the color of the water curtain according to the change of ambient light. Especially under strong lighting conditions, the color of the water curtain is enhanced by activating the dyeing device to maintain the clear visibility of the laser projection, effectively reminding and guiding the driver.

[0058] The above-mentioned drawings are only schematic illustrations of the processes included in the method according to the exemplary embodiments of the present application, rather than for limiting purposes. It is easy to understand that the processes shown in the above-mentioned drawings do not indicate or limit the chronological order of these processes. In addition, it is also easy to understand that these processes can be executed, for example, synchronously or asynchronously in multiple modules.

[0059] It should be understood that the present application is not limited to the exact structures described above 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 tunnel entrance air-water curtain flexible partition warning system, which is used for fire warning at the tunnel entrance, characterized in that: include: A water curtain generating device (1) comprises a water supply pipeline (11), a first water distribution pipe (12) and a second water distribution pipe (13), and is used to generate two water curtains; An air curtain generating device (2) is used to generate an air curtain, wherein the air curtain is located between the water curtains, and the air curtain and the water curtain together form an air-water curtain flexible partition; A light sensor (3), used to detect the light condition at the tunnel entrance; A dyeing device (4), which is arranged on the first water distribution pipe and is used to add dye to the water curtain generating device to change the color of the water curtain; A laser projector (5) is installed on the inner wall of the tunnel entrance, maintaining a certain distance from the water curtain, and is used to project a warning sign onto the water curtain formed by the first water distribution pipe; A controller (6) is electrically connected to the water curtain generating device (1), the air curtain generating device (2), the light sensor (3), the dyeing device (4) and the laser projector (5). The controller (6) controls the flow of the water curtain generating device (1) and the air curtain generating device (2) and the opening and closing of the dyeing device (4) based on information from the light sensor (3).

2. The tunnel entrance air-water curtain flexible partition warning system according to claim 1 is characterized by: A first solenoid valve (14) and a second solenoid valve (15) are respectively provided at the connection between the water supply pipeline (11) and the first water distribution pipe (12) and the second water distribution pipe (13).

3. The tunnel entrance air-water curtain flexible partition warning system according to claim 2 is characterized by: The dyeing device (4) comprises an ink cartridge (41) and a dripping tube (42), wherein the dripping tube is connected to the first water distribution pipe (12) and a one-way electromagnetic valve (43) is arranged on the dripping tube.

4. The tunnel entrance air-water curtain flexible partition warning system according to claim 3 is characterized by: The drip tube (42) and the first water distribution pipe (12) are threadedly matched.

5. The tunnel entrance air-water curtain flexible partition warning system according to claim 2 is characterized by: The dyeing device (4) comprises a bypass pipe (44), a third solenoid valve (45) and a fourth solenoid valve (46) are arranged on the bypass pipe (44), an ink bag (47) is arranged in the bypass pipe (44), and the ink bag (47) is located between the third solenoid valve (45) and the fourth solenoid valve (46).

6. The tunnel entrance air-water curtain flexible partition warning system according to claim 5 is characterized by: The bypass pipe (44) is provided with a detachable cover, and the ink bag (47) is fixed in the cover.

7. The tunnel entrance air-water curtain flexible partition warning system according to claim 1 is characterized by: When the light sensor (3) detects that the light is greater than a first threshold value, the controller (6) controls the dyeing device (4) to turn on.

8. The tunnel entrance air-water curtain flexible partition warning system according to claim 6 is characterized by: When the light sensor (3) detects that the light is less than a second threshold value, the controller (6) controls the dyeing device (4) to shut down.

9. An early warning method based on a tunnel entrance air-water curtain flexible partition early warning system according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: When a fire occurs in a smoke control zone in the tunnel, the controller sends a start signal to the water curtain generating device, the air curtain generating device, the light sensor and the laser projector to form a water curtain and an air curtain. The laser projector projects a warning sign at the tunnel entrance on the water curtain, and the tunnel is suspended; S2: When the light sensor detects that the light is greater than the first threshold, the controller controls the dyeing device to start, and at the same time reduces the water flow of the first water distribution pipe, increases the water flow of the second water distribution pipe, and increases the air flow of the air curtain generating device; S3: When the light sensor detects that the light is less than the second threshold, the controller controls the dyeing device to close and restores the initial flow of the water curtain generating device and the air curtain generating device; S4: When the fire information in the tunnel is lifted, the controller sends a shutdown signal to the water curtain generating device, air curtain generating device, light sensor and laser projector, and the tunnel resumes traffic.

10. The early warning method according to claim 9, characterized in that: In step S2, the flow rate of the water supply pipeline is kept constant.

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