An aerosol intelligent fire protection system for highway tunnels

Abstract

This utility model discloses an aerosol intelligent fire protection system for highway tunnels, comprising several mounting slots evenly arranged on the side wall of the tunnel body. An aerosol fire extinguishing material storage tank is placed in each mounting slot. A first discharge pipe and a second discharge pipe are respectively installed on the side surface of the aerosol fire extinguishing material storage tank. A nozzle is installed at the end of both the first and second discharge pipes. A shape memory alloy valve that opens at high temperatures is installed on the first discharge pipe, and a solenoid valve is installed on the second discharge pipe. The two discharge pipes on the aerosol fire extinguishing material storage tank are respectively equipped with a solenoid valve and a shape memory alloy valve. The solenoid valve can be used for active fire extinguishing, while the shape memory alloy valve can achieve passive fire extinguishing when the solenoid valve fails (power failure, damage), thus improving the reliability of the fire protection system.

Description

Technical Field

[0001] This utility model relates to the field of highway tunnel fire protection technology, specifically an aerosol intelligent fire protection system applied to highway tunnels. Background Technology

[0002] With the increasing length of highway tunnels and the continuous growth of traffic flow, tunnel fire prevention and control face severe challenges. Traditional tunnel fire protection systems mostly use water sprinkler systems or fixed dry powder extinguishing devices, and most of them suffer from the drawback of having only one activation method, generally relying on solenoid valves as the sole activation mechanism. When encountering power outages, wiring corrosion, or mechanical jamming of solenoid valves, the system will lose its fire extinguishing capability. Moreover, ordinary solenoid valves are prone to coil melting at high temperatures, resulting in a high failure rate and a lack of autonomous temperature response capability. To address these issues, we propose an aerosol intelligent fire protection system for highway tunnels. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an aerosol intelligent fire protection system for highway tunnels. The aerosol fire extinguishing material storage tank is equipped with two discharge pipes, one with a solenoid valve and the other with a shape memory alloy valve. The solenoid valve can be used for active fire extinguishing, while the shape memory alloy valve can achieve passive fire extinguishing when the solenoid valve fails, loses power, or is damaged, thereby improving the reliability of the fire protection system and effectively solving the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an aerosol intelligent fire protection system for highway tunnels, comprising several mounting slots evenly arranged on the side wall of the tunnel body, wherein an aerosol fire extinguishing material storage tank is placed in the mounting slot, and a first discharge pipe and a second discharge pipe are respectively arranged on the side surface of the aerosol fire extinguishing material storage tank, and nozzles are provided at the ends of the first discharge pipe and the second discharge pipe, wherein a shape memory alloy valve that opens at high temperature is provided on the first discharge pipe, and a solenoid valve is provided on the second discharge pipe.

[0005] As a preferred technical solution of this utility model, an inspection door is hinged to the inner side of the mounting groove, and the inspection door has through holes corresponding to the first discharge pipe and the second discharge pipe.

[0006] As a preferred embodiment of this utility model, a trigger switch corresponding to the solenoid valve is provided on the side wall of the tunnel body near the mounting groove.

[0007] As a preferred embodiment of this utility model, the trigger switch is electrically connected to an external power supply installed on the tunnel body.

[0008] As a preferred technical solution of this utility model, the tunnel body is equipped with a controller, and the external power supply, trigger switch and solenoid valve are all electrically connected to the controller.

[0009] As a preferred technical solution of this utility model, a plurality of infrared flame detectors are evenly arranged on the tunnel body, and the infrared flame detectors are electrically connected to the controller.

[0010] As a preferred embodiment of this utility model, a plurality of smoke detectors are evenly arranged on the tunnel body, and the smoke detectors are electrically connected to the controller.

[0011] As a preferred embodiment of this utility model, the aerosol fire extinguishing material storage tank is equipped with a pressure sensor, which is electrically connected to the controller.

[0012] As a preferred technical solution of this utility model, the tunnel body is provided with a wireless transmission module, which is electrically connected to the controller and wirelessly connected to the monitoring center terminal.

[0013] Compared with existing technologies, the advantages of this invention are as follows: Multiple installation slots are provided on the two-lane highway tunnel body to house aerosol fire extinguishing material storage tanks. In the event of a fire, aerosols can be released from these tanks for rapid fire extinguishing. The aerosols achieve rapid fire extinguishing through a triple action of cooling, chemical inhibition, and solid-phase adsorption, and can completely submerge and cover the fire source, bypassing obstacles, resulting in higher fire extinguishing efficiency. Two discharge pipes on the aerosol fire extinguishing material storage tanks are equipped with a solenoid valve and a shape memory alloy valve, respectively. The solenoid valve can be used for active fire extinguishing, while the shape memory alloy valve can achieve passive fire extinguishing when the solenoid valve fails (power failure, damage), improving the reliability of the fire protection system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This utility model Figure 1 A schematic diagram of the side view structure;

[0016] Figure 3 This is a schematic diagram of the electrical connection structure of this utility model.

[0017] In the diagram: 1 Tunnel body, 2 Installation slot, 3 Inspection door, 4 Aerosol fire extinguishing material storage tank, 5 First discharge pipe, 6 Second discharge pipe, 7 Memory alloy valve, 8 Solenoid valve, 9 Infrared flame detector, 10 Smoke alarm, 11 Trigger switch, 12 External power supply, 13 Controller, 14 Pressure sensor, 15 Wireless transmission module, 16 Monitoring center terminal. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 This utility model provides a technical solution: an aerosol intelligent fire protection system for highway tunnels, including a plurality of installation slots 2 evenly arranged on the side wall of a two-lane highway tunnel body 1. An aerosol fire extinguishing material storage tank 4 is placed in the installation slot 2. The aerosol stored in the aerosol fire extinguishing material storage tank 4 can be hot aerosol or cold aerosol. When storing hot aerosol, the aerosol fire extinguishing material storage tank 4 does not need to be equipped with a pressure relief port. When storing cold aerosol, the tank body needs to be equipped with a pressure relief port and needs to comply with the pressure vessel specifications, and is equipped with a pressure and temperature monitoring system.

[0020] In the event of a fire, aerosols can be released from the aerosol extinguishing material storage tank 4 to quickly extinguish the fire. The aerosols can achieve rapid fire extinguishing through a triple action of cooling, chemical inhibition and solid-phase adsorption, and can bypass obstacles to completely flood and cover the fire source, resulting in higher fire extinguishing efficiency.

[0021] The side surface of the aerosol fire extinguishing material storage tank 4 is respectively equipped with a first discharge pipe 5 and a second discharge pipe 6. Both the first and second discharge pipes 5 and 6 have nozzles at their ends. The first discharge pipe 5 is equipped with a shape memory alloy valve 7 that opens at high temperatures, and the second discharge pipe 6 is equipped with a solenoid valve 8. The solenoid valve 8 can be used for active fire extinguishing, while the shape memory alloy valve 7 can achieve passive fire extinguishing when the solenoid valve 8 fails (power failure, damage), thus improving the reliability of the fire protection system.

[0022] The shape memory alloy valve 7 uses a nickel-titanium alloy spring with a trigger temperature set at 85-120℃. It can open autonomously based on the ambient temperature when the solenoid valve fails, without the need for an external energy supply.

[0023] In a preferred embodiment, an inspection door 3 is hinged to the inner side of the mounting groove 2 to close the mounting groove 2.

[0024] The inspection door 3 is provided with through holes corresponding to the first discharge pipe 5 and the second discharge pipe 6. When the inspection door 3 is closed, the first discharge pipe 5 and the second discharge pipe 6 pass through the through holes, which facilitates the spraying of aerosols to extinguish nearby fires in the event of a fire.

[0025] In a preferred embodiment, a trigger switch 11 corresponding to the solenoid valve 8 is provided on the side wall of the tunnel body 1 near the mounting groove 2. The trigger switch 11 is a fire alarm trigger switch commonly used in the prior art, which requires a large impact force to trigger, thus avoiding accidental activation and resource waste.

[0026] In a preferred embodiment, the trigger switch 11 is electrically connected to an external power supply 12 installed on the tunnel body 1. The external power supply (220V) supplies power to the trigger switch 11 and the solenoid valve 8, etc. The external power supply can be the same power supply as the tunnel lighting system, or it can be an independent power supply.

[0027] In a further preferred technical solution, a controller 13 is installed on the tunnel body 1. The controller 13 is preferably a commonly used microcontroller or PLC controller, such as an Arduino series microcontroller or a Siemens S7 series PLC controller. The external power supply 12, trigger switch 11, and solenoid valve 8 are all electrically connected to the controller 13. By pre-setting commonly used programs and fire monitoring parameters on the controller 13, the solenoid valve 8 can be intelligently controlled in conjunction with fire sensing components to achieve intelligent fire suppression, further improving the stability and reliability of the fire protection system.

[0028] Furthermore, the tunnel body 1 is uniformly equipped with several infrared flame detectors 9 and smoke detectors 10. The infrared flame detectors 9 can be selected as TSF-9200 / IR2 dual-wavelength point-type infrared flame detectors, and the smoke detectors 10 can be selected as TY-GM-FL251 photoelectric smoke sensors. Both the infrared flame detectors 9 and the smoke detectors 10 are electrically connected to the controller 13. Through these fire sensing components, the fire situation inside the highway tunnel is intelligently monitored, achieving intelligent and automated fire suppression.

[0029] An optional technical solution involves installing a pressure sensor 14 on the aerosol fire extinguishing material storage tank 4 to detect the pressure value inside the tank. The pressure sensor 14 is electrically connected to the controller 13. Each aerosol fire extinguishing material storage tank 4 has a corresponding number. When a fire occurs nearby, the aerosol fire extinguishing material storage tank 4 sprays aerosol through the discharge pipe and nozzle to extinguish the fire. As the internal pressure of the aerosol fire extinguishing material storage tank 4 decreases, the pressure sensor 14 sends a corresponding signal to the controller 13. The controller 13 determines that the pressure has decreased and can open the solenoid valve 8 (in the case of no failure or triggering), thereby opening both discharge pipes and nozzles to accelerate the release of aerosol, improve fire extinguishing efficiency, and prevent the fire from spreading.

[0030] Optionally, a wireless transmission module 15 is installed on the tunnel body 1. The wireless transmission module 15 can be a commonly used Wi-Fi module or a 5G communication module, and is electrically connected to the controller 13. The controller 13 controls the solenoid valve 8, pressure sensor 14, wireless transmission module 15, infrared flame detector 9, and smoke alarm 10 using methods commonly used in the prior art. The wireless transmission module 15 is wirelessly connected to the monitoring center terminal 16, which may include a computer, display screen, and other peripherals. The controller 13 can transmit the corresponding signal information from the infrared flame detector 9, smoke alarm 10, and pressure sensor 14 to the monitoring center terminal 16 via the wireless transmission module 15. In the event of a fire or abnormality, the staff at the monitoring center can quickly receive information and determine whether a fire has occurred by checking the tunnel monitoring, allowing for rapid dispatch of personnel to handle the situation and further preventing the escalation of the disaster.

[0031] The solenoid valve 8, pressure sensor 14, controller 13, wireless transmission module 15, infrared flame detector 9, and smoke alarm 10 used in this application are all commonly used electronic components in the prior art. Their specific structures, working principles, control methods, and circuit connections are all well-known technologies and will not be described in detail here.

[0032] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aerosol intelligent fire protection system for highway tunnels, comprising a plurality of mounting slots (2) uniformly arranged on the sidewall of the tunnel body (1), characterized in that: The installation slot (2) contains an aerosol fire extinguishing material storage tank (4). The side surface of the aerosol fire extinguishing material storage tank (4) is provided with a first discharge pipe (5) and a second discharge pipe (6). The ends of the first discharge pipe (5) and the second discharge pipe (6) are provided with nozzles. The first discharge pipe (5) is provided with a shape memory alloy valve (7) that will open at high temperature. The second discharge pipe (6) is provided with a solenoid valve (8).

2. The aerosol intelligent fire protection system for highway tunnels according to claim 1, characterized in that: The mounting groove (2) is hinged to the inner side with an inspection door (3), and the inspection door (3) has through holes corresponding to the first discharge pipe (5) and the second discharge pipe (6).

3. The aerosol intelligent fire protection system for highway tunnels according to claim 1, characterized in that: A trigger switch (11) corresponding to the solenoid valve (8) is provided on the side wall of the tunnel body (1) near the mounting groove (2).

4. The aerosol intelligent fire protection system for highway tunnels according to claim 3, characterized in that: The trigger switch (11) is electrically connected to the external power supply (12) installed on the tunnel body (1).

5. The aerosol intelligent fire protection system for highway tunnels according to claim 4, characterized in that: The tunnel body (1) is equipped with a controller (13), and the external power supply (12), trigger switch (11) and solenoid valve (8) are all electrically connected to the controller (13).

6. The aerosol intelligent fire protection system for highway tunnels according to claim 5, characterized in that: Several infrared flame detectors (9) are evenly arranged on the tunnel body (1), and the infrared flame detectors (9) are electrically connected to the controller (13).

7. The aerosol intelligent fire protection system for highway tunnels according to claim 4, characterized in that: Several smoke detectors (10) are evenly arranged on the tunnel body (1), and the smoke detectors (10) are electrically connected to the controller (13).

8. The aerosol intelligent fire protection system for highway tunnels according to claim 4, characterized in that: The aerosol fire extinguishing material storage tank (4) is equipped with a pressure sensor (14), which is electrically connected to the controller (13).

9. An aerosol intelligent fire protection system for highway tunnels according to any one of claims 1-8, characterized in that: The tunnel body (1) is equipped with a wireless transmission module (15), which is electrically connected to the controller (13) and wirelessly connected to the monitoring center terminal (16).

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