Tunnel fire-fighting foam filling system

Abstract

This utility model discloses a tunnel fire-fighting foam liquid filling system, belonging to the field of fire-fighting equipment technology. It includes several fire boxes, a foam liquid filling vehicle, and a monitoring center. Both the fire boxes and the foam liquid filling vehicle are networked with the monitoring center to achieve data exchange. Specifically, each fire box contains a foam liquid storage tank and a first control device. The foam liquid storage tank is equipped with a first liquid level sensor, a solenoid valve, a variable frequency delivery pump, and a first flow meter. A flow regulating valve and a second flow meter are installed on the pressure water pipe. All components are connected to the first control device. The foam liquid filling vehicle contains a foam liquid storage tank, a variable frequency high-pressure pump, a battery, a third flow meter, and a second control device. Both the first and second control devices are connected to the monitoring center. This utility model provides a highly efficient, intelligent, and easy-to-maintain tunnel fire-fighting foam liquid filling system.

Description

Technical Field

[0001] This utility model relates to the field of fire protection equipment technology, and in particular to a tunnel fire-fighting foam liquid filling system. Background Technology

[0002] As a crucial component of modern transportation infrastructure, tunnels are a major concern for fire safety. Due to their relatively enclosed spaces, smoke and high temperatures are difficult to dissipate quickly during a fire, potentially leading to serious casualties and property damage. An efficient fire suppression system is key to the safe operation of tunnels, and foam fire extinguishing systems, with their rapid fire suppression and effective cooling properties, have become an essential component of tunnel fire prevention.

[0003] Currently, tunnel fire-fighting foam filling systems generally include several foam storage tanks located inside the tunnel and foam filling devices for filling these tanks. The main technical problems with these systems are as follows:

[0004] (1) Foam liquid filling devices have low working efficiency. Traditional foam liquid filling devices mostly use manual or semi-automatic filling methods, which are slow, complicated to operate, and time-consuming, making it difficult to meet the needs of rapid response in the event of a fire.

[0005] (2) The flow rate of foam liquid output from the foam liquid storage tank is not easy to adjust and control, which makes the mixing ratio of foam liquid and water inaccurate and prone to uneven mixing. Due to uneven mixing of foam liquid and water, the generated foam has poor stability, the covering effect is not ideal, and the fire extinguishing efficiency is affected.

[0006] (3) The foam liquid storage tank lacks intelligent monitoring function. When the foam liquid in the tank is insufficient, it is difficult to detect and deal with it in time, which poses a safety hazard and is relatively inconvenient to maintain. Utility Model Content

[0007] This invention addresses the shortcomings of existing technologies by providing a highly efficient, intelligent, and easy-to-maintain tunnel fire-fighting foam liquid filling system to solve the aforementioned problems of existing tunnel fire-fighting foam liquid filling systems.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A tunnel fire-fighting foam filling system, comprising:

[0010] Several fire extinguisher boxes are spaced apart within the tunnel. Each fire extinguisher box contains a foam liquid storage tank and a first control device. The foam liquid storage tank contains a first level sensor. The top of the foam liquid storage tank has a foam liquid filling port and a sealing cap for closing the filling port. The bottom of the foam liquid storage tank has a foam liquid outlet pipe, on which a solenoid valve, a variable frequency delivery pump, and a first flow meter are sequentially installed. The outlet of the foam liquid outlet pipe is connected to the input of a mixer, which is also connected to a pressure water pipe. The pressure water pipe has a flow regulating valve and a second flow meter. The output of the mixer is connected to one end of a mixed liquid delivery hose, and the other end of the mixed liquid delivery hose is connected to a foam gun. The first control device includes a first housing. Inside the first housing are a first controller, a first communication device, and a power supply. Outside the first housing are a first display screen and a first button module. The first level sensor, solenoid valve, variable frequency delivery pump, first flow meter, flow regulating valve, second flow meter, first communication device, power supply, first display screen, and first button module are all connected to the first controller.

[0011] A foam liquid filling vehicle includes a vehicle body, a foam liquid storage tank, a variable frequency high-pressure pump, a battery, and a second control device. The foam liquid storage tank, variable frequency high-pressure pump, battery, and second control device are all mounted on the vehicle body. The input end of the variable frequency high-pressure pump is connected to the bottom outlet of the foam liquid storage tank via a first infusion pipe, and the output end of the variable frequency high-pressure pump is connected to a quick connector via a second infusion pipe for connecting to the foam liquid filling port on the foam liquid storage tank. A third flow meter is installed on the first infusion pipe. The second control device includes a second housing, with a second display screen and a second button module on the outer side of the second housing, and a second controller and a second communication device on the inner side of the second housing. The variable frequency high-pressure pump, battery, third flow meter, second display screen, second button module, and second communication device are all connected to the second controller.

[0012] The monitoring center is connected to the network of both the first communication device inside the fire extinguisher box and the second communication device inside the foam liquid filling vehicle.

[0013] Furthermore, the body of the foam liquid filling vehicle is a handcart or an electric vehicle.

[0014] Furthermore, the first control device also includes a first on-site alarm, which is installed inside the first housing and connected to the first controller.

[0015] Furthermore, a second liquid level sensor is installed inside the foam liquid storage tank, and the second liquid level sensor is connected to the second controller.

[0016] Furthermore, a temperature sensor is also installed inside the foam liquid storage tank, and the temperature sensor is connected to the second controller.

[0017] Furthermore, the second control device also includes a second on-site alarm, which is installed inside the second housing and connected to the second controller.

[0018] Furthermore, the foam liquid filling vehicle is equipped with a battery compartment, and the battery is installed in the battery compartment.

[0019] Furthermore, the foam liquid filling vehicle is equipped with a high-pressure pump storage compartment, and the variable frequency high-pressure pump is installed in the high-pressure pump storage compartment.

[0020] Furthermore, the first communication device is connected to the monitoring center via a wired network.

[0021] Furthermore, the second communication device is connected to the monitoring center via a wireless network, and the second communication device is a 4G / 5G module or a WiFi module.

[0022] By adopting the above technical solution, this utility model has the following beneficial effects:

[0023] 1. This utility model achieves a qualitative leap in filling efficiency by equipping the foam liquid filling vehicle with a variable frequency high-pressure pump, compared to traditional manual or semi-automatic filling methods. Traditional filling devices are slow and complex to operate, and may take several hours to complete a single filling. In contrast, the variable frequency high-pressure pump can automatically adjust the output pressure and flow rate according to set parameters, quickly and quantitatively filling the foam liquid storage tank of the fire extinguisher box in the tunnel. This greatly improves the replenishment speed of the foam liquid, enabling a rapid response in the event of a fire, buying valuable time for fire fighting and rescue, and effectively reducing the losses caused by the fire.

[0024] 2. This utility model features a targeted design within the fire-fighting box, fully considering the mixing control of foam concentrate and water. The foam concentrate outlet pipe and the pressure water pipe are connected to the mixer via flow meters and control components, respectively. This precise control mechanism can accurately adjust the flow rates of foam concentrate and water according to actual fire-fighting needs. In practical applications, different types of fires require different foam concentrate ratios. This system, through precise control, ensures accurate mixing ratios, effectively solving the problem of uneven mixing in traditional systems. The uniformly mixed foam concentrate generates foam with strong stability and good coverage. When extinguishing tunnel fires, it can more quickly and effectively isolate oxygen, reduce flame temperature, and improve fire-fighting efficiency. Compared to traditional systems, fire-fighting time can be effectively shortened, and the fire-fighting success rate is significantly improved.

[0025] 3. This invention incorporates a first liquid level sensor within the foam liquid storage tank, which works in conjunction with a first control device to establish a comprehensive intelligent liquid level monitoring system. The first liquid level sensor monitors the foam liquid level in the tank in real time and transmits the data to the first control device. Once the foam liquid level falls below a preset threshold, the first control device not only promptly relays information to the monitoring center but also issues an alarm via a first on-site alarm, alerting relevant personnel to take immediate action. This intelligent monitoring function avoids safety hazards caused by undetected foam liquid shortages, changes the outdated reliance on manual inspections in traditional systems, significantly reduces maintenance difficulty, labor and time costs, and ensures the tunnel fire protection system remains reliable at all times.

[0026] 4. This utility model connects the fire extinguisher boxes and foam filling trucks to the monitoring center via a first communication device and a second communication device, respectively, achieving an innovative breakthrough in remote monitoring and management. The monitoring center can monitor the foam liquid levels in each fire extinguisher box and the operation status of the filling trucks in the tunnel in real time. This remote monitoring and management mode enhances the intelligence level of the tunnel fire protection system, improves management efficiency, and makes the operation of the fire protection system more scientific and efficient.

[0027] 5. The foam liquid storage tank of this utility model is equipped with a second liquid level sensor and a temperature sensor. When the second liquid level sensor detects insufficient foam liquid storage or the temperature sensor detects an abnormal foam liquid temperature, the second controller controls the second on-site alarm to execute an alarm action, immediately alerting on-site personnel to take measures. Since the storage of foam liquid has certain temperature requirements, excessively high or low temperatures may affect the performance of the foam liquid or even cause safety problems. The temperature sensor can promptly detect temperature anomalies and feed the information back to the second control device so that corresponding cooling or insulation measures can be taken. These safety measures work together to provide multiple safeguards for the safe operation of the system, effectively reducing the probability of safety accidents.

[0028] 6. This utility model features a flexible and convenient design for the foam liquid filling vehicle, enabling it to better adapt to different tunnel environments and usage requirements. The vehicle can be either a handcart or an electric vehicle. The handcart is suitable for tunnel areas with limited space and difficult vehicle access, offering flexible and convenient operation. The electric vehicle is suitable for foam liquid filling operations over longer distances and larger areas, offering advantages such as strong power and high speed. Furthermore, the battery compartment and high-pressure pump storage compartment on the vehicle body ensure a rational layout of components, facilitating not only equipment storage and transportation but also enabling quick location and repair of various components during routine maintenance. This significantly improves the ease of use of the system and reduces the difficulty and cost of equipment maintenance.

[0029] 7. The variable frequency high-pressure pump of this invention, in conjunction with a third flow meter, allows for adjustment of the filling rate as needed. The third flow meter monitors the flow rate of the foam liquid in real time and feeds the data back to the second control device. The second control device adjusts the operating parameters of the variable frequency high-pressure pump according to the set filling requirements or actual conditions. In emergency filling scenarios, the output power of the variable frequency high-pressure pump can be increased to accelerate the filling rate and meet the needs of rapid foam liquid replenishment in fire rescue. During routine maintenance or low-demand scenarios, the filling rate can be reduced to achieve precise and stable filling, avoiding foam liquid overflow or waste due to excessively rapid filling. This further enhances the system's flexibility and practicality, and optimizes the overall effect of foam liquid filling in tunnel fire fighting operations. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the fire box structure proposed in Embodiment 1 of this utility model;

[0031] Figure 2 This is a schematic diagram of the structure of the foam liquid filling vehicle proposed in Embodiment 1 of this utility model;

[0032] Figure 3 This is a schematic diagram of the electrical connections of the tunnel fire-fighting foam liquid filling system proposed in Embodiment 1 of this utility model;

[0033] The components in the attached diagram are labeled as follows: 1-Fire box, 2-Foam liquid storage tank, 3-Foam liquid filling port, 4-Foam liquid outlet pipe, 5-Solenoid valve, 6-Variable frequency delivery pump, 7-First flow meter, 8-Mixer, 9-Pressure water pipe, 10-Flow regulating valve, 11-Second flow meter, 12-Mixed liquid delivery hose, 13-Foam gun, 14-First control device, 15-Foam liquid filling vehicle, 16-Vehicle body, 17-Foam liquid storage tank, 18-Variable frequency high-pressure pump, 19-Battery, 20-Second control device. Detailed Implementation

[0034] 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.

[0035] Example 1

[0036] like Figure 1-3 As shown, a tunnel fire-fighting foam liquid filling system includes several fire-fighting boxes 1, a foam liquid filling vehicle 15, and a monitoring center. Both the fire-fighting boxes 1 and the foam liquid filling vehicle 15 are connected to the monitoring center for data exchange. The fire-fighting boxes 1 are spaced apart within the tunnel.

[0037] The fire box 1 contains a foam liquid storage tank 2 and a first control device 14. The foam liquid storage tank 2 is equipped with a first liquid level sensor. The top of the foam liquid storage tank 2 has a foam liquid filling port 3 and a sealing cap for closing the filling port 3. The bottom of the foam liquid storage tank 2 has a foam liquid outlet pipe 4, on which a solenoid valve 5, a variable frequency delivery pump 6, and a first flow meter 7 are sequentially installed. The outlet of the foam liquid outlet pipe 4 is connected to the input end of a mixer 8. The input end of the mixer 8 is also connected to a pressure water pipe 9, on which a flow regulating valve 10 and a second flow meter 11 are installed. The output end of the mixer 8 is connected to one end of a mixed liquid delivery hose 12, and the other end of the mixed liquid delivery hose 12 is connected to a foam gun 13.

[0038] The first control device 14 includes a first housing. Inside the first housing are a first controller, a first communication device, and a power supply. Outside the housing are a first display screen and a first button module. A first liquid level sensor, a solenoid valve 5, a variable frequency transfer pump 6, a first flow meter 7, a flow regulating valve 10, a second flow meter 11, the first communication device, the power supply, the first display screen, and the first button module are all connected to the first controller. The first control device 14 also includes a first on-site alarm, which is installed inside the first housing and connected to the first controller.

[0039] The foam liquid storage tank 2 in this utility model is mainly used to store foam liquid and, together with other components, realizes intelligent monitoring and precise delivery of foam liquid. The foam liquid filling port 3 and sealing cap are set on the top. When filling foam liquid, the sealing cap is opened and the filling port is connected through the quick connector of the foam liquid filling cart 15 to inject foam liquid into the storage tank. After filling, the sealing cap is closed to prevent foam liquid from evaporating or external impurities from entering, thus ensuring the storage quality of foam liquid.

[0040] The first liquid level sensor inside the tank monitors the foam liquid level in real time, converts the liquid level data into an electrical signal, and transmits it to the first controller in the first control device 14. The first controller analyzes and processes the data. When the liquid level is lower than a preset threshold, it transmits the information to the monitoring center through the first communication device and triggers the first on-site alarm to sound an alarm, reminding staff to replenish the foam liquid in time.

[0041] During the foam liquid output stage, the bottom foam liquid outlet pipe 4 works in conjunction with components such as the variable frequency delivery pump 6 and the solenoid valve 5. When foam liquid is needed for fire extinguishing, the first controller controls the solenoid valve 5 to open, and the foam liquid flows along the outlet pipe under the action of gravity and the variable frequency delivery pump 6. The first flow meter 7 monitors the flow rate of the foam liquid in real time and feeds the data back to the first controller. The first controller, based on the corresponding parameters set manually, adjusts the operating frequency of the variable frequency delivery pump 6 to precisely control the output flow rate and rate of the foam liquid to meet the usage requirements under different conditions. The output foam liquid and the water delivered by the pressure water pipe 9 are mixed in the mixer 8. The water delivery volume is regulated by the flow regulating valve 10 and the second flow meter 11. They are mixed in a precise ratio to form a foam mixture of appropriate concentration, and then delivered to the foam gun 13 through the mixture delivery hose 12 for extinguishing tunnel fires.

[0042] This invention features a targeted design within the fire-fighting box 1, fully considering the mixing control of foam concentrate and water. The foam concentrate outlet pipe 4 and the pressure water pipe 9 are connected to the mixer 8 via flow meters and control components, respectively. This precise control mechanism allows for accurate adjustment of the flow rates of foam concentrate and water according to actual fire-fighting needs. In practical applications, different types of fires require different foam concentrate ratios. This system, through precise control, ensures accurate mixing ratios, effectively solving the problem of uneven mixing in traditional systems. The uniformly mixed foam concentrate generates foam with strong stability and good coverage. When extinguishing tunnel fires, it can more quickly and effectively isolate oxygen, reduce flame temperature, and improve fire-fighting efficiency. Compared to traditional systems, fire-fighting time can be effectively shortened, and the fire-fighting success rate is significantly improved.

[0043] The foam liquid filling cart 15 includes a cart body 16, a foam liquid storage tank 17, a variable frequency high-pressure pump 18, a battery 19, and a second control device 20. The foam liquid storage tank 17, the variable frequency high-pressure pump 18, the battery 19, and the second control device 20 are all mounted on the cart body 16. The cart body 16 of the foam liquid filling cart 15 can be a handcart or an electric cart. In this embodiment, the cart body 16 of the foam liquid filling cart 15 is a handcart. A battery compartment is provided on the cart body 16 of the foam liquid filling cart 15, and the battery 19 is installed in the battery compartment. A high-pressure pump storage compartment is provided on the cart body 16 of the foam liquid filling cart 15, and the variable frequency high-pressure pump 18 is installed in the high-pressure pump storage compartment.

[0044] The input end of the variable frequency high-pressure pump 18 is connected to the bottom outlet of the foam liquid storage tank 17 via a first infusion pipe. The output end of the variable frequency high-pressure pump 18 is connected to a quick connector via a second infusion pipe for connecting to the foam liquid filling port 3 on the foam liquid storage tank 2. A third flow meter is installed on the first infusion pipe. The second control device 20 includes a second housing. A second display screen and a second button module are installed on the outside of the second housing, and a second controller and a second communication device are installed on the inside of the second housing. The variable frequency high-pressure pump 18, the battery 19, the third flow meter, the second display screen, the second button module, and the second communication device are all connected to the second controller.

[0045] In addition, a second liquid level sensor is installed inside the foam liquid storage tank 17, and the second liquid level sensor is connected to the second controller. A temperature sensor is also installed inside the foam liquid storage tank 17, and the temperature sensor is connected to the second controller. The second control device 20 also includes a second on-site alarm, which is installed inside the second housing and connected to the second controller.

[0046] The foam liquid filling vehicle 15 in this invention is mainly responsible for replenishing foam liquid to the foam liquid storage tank 2 of the fire extinguishing box 1 inside the tunnel. Its operation relies on the coordinated operation of various components. The foam liquid storage tank 17 on the vehicle body 16 is used to store sufficient foam liquid. The second liquid level sensor and temperature sensor inside the tank monitor the foam liquid storage level and temperature in real time, and convert the data into electrical signals and transmit them to the second controller in the second control device 20. The second controller analyzes and processes the data. When the liquid level or temperature is abnormal, it issues an alarm through the second on-site alarm and transmits the abnormal information to the monitoring center through the second communication device.

[0047] During the filling operation, the operator pushes or drives the vehicle 16 to the target fire extinguisher box 1 and connects the quick connector on the second infusion pipe to the filling port of the foam liquid storage tank 2 of the fire extinguisher box 1. Subsequently, the second controller controls the variable frequency high-pressure pump 18 to start according to the preset filling volume or the command from the monitoring center. The variable frequency high-pressure pump 18 draws foam liquid from the bottom of the foam liquid storage tank 17 through the first infusion pipe. The third flow meter monitors the flow rate of the foam liquid in the infusion pipe in real time and feeds the flow data back to the second controller. Based on the feedback information, the second controller adjusts the operating frequency of the variable frequency high-pressure pump 18 in real time to control the delivery pressure and flow rate of the foam liquid, so as to achieve precise quantitative filling.

[0048] In emergency filling scenarios, the output power of the variable frequency high-pressure pump 18 can be increased to accelerate the filling rate and meet the needs of rapid foam liquid replenishment in fire rescue. In routine maintenance or low-demand scenarios, the filling rate can be reduced to achieve precise and stable filling, avoiding foam liquid overflow or waste due to excessively rapid filling. This further enhances the system's flexibility and practicality, and optimizes the overall effect of foam liquid filling in tunnel fire fighting systems.

[0049] During the filling process, operators can visually view the foam liquid delivery status, remaining reserves, and other information on the second display screen outside the second control device 20, and use the second button module to set relevant parameters and control the operation. Simultaneously, the second communication device transmits the working status and location information (a locator is installed on the vehicle body 16) of the filling vehicle to the monitoring center in real time, enabling unified scheduling and management by the monitoring center to ensure the efficient operation of the entire tunnel fire-fighting foam liquid filling system.

[0050] Both the first communication device inside the fire extinguisher box 1 and the second communication device inside the foam filling vehicle 15 are connected to the monitoring center network. Specifically, the first communication device is connected to the monitoring center via a wired network. The second communication device is connected to the monitoring center via a wireless network; the second communication device is a 4G / 5G module or a WiFi module. In this embodiment, the second communication device is a 4G module. The monitoring center can monitor the foam liquid levels in each fire extinguisher box 1 and the operation status of the filling vehicle in real time. This remote monitoring and management mode improves the intelligence level of the tunnel fire protection system, increases management efficiency, and makes the operation of the fire protection system more scientific and efficient.

[0051] This invention achieves a qualitative leap in filling efficiency by equipping the foam liquid filling vehicle 15 with a variable frequency high-pressure pump 18, compared to traditional manual or semi-automatic filling methods. Traditional filling devices are slow and complex to operate, and may take several hours to complete a single filling. However, the variable frequency high-pressure pump 18 can automatically adjust the output pressure and flow rate according to set parameters, quickly and quantitatively filling the foam liquid storage tank 2 of the fire extinguishing box 1 in the tunnel. This greatly improves the replenishment speed of the foam liquid, enabling a rapid response in the event of a fire, buying valuable time for fire fighting and rescue, and effectively reducing the losses caused by the fire.

[0052] This invention enables the monitoring center to obtain data such as foam liquid storage and filling status in real time by installing communication devices in the fire box 1 and foam liquid filling vehicle 15, thereby achieving intelligent monitoring. At the same time, by using the flow meter and control components on the foam liquid outlet pipe 4 and the pressure water pipe 9, the flow rates of the two are precisely adjusted and mixed in proportion in the mixer 8, ensuring that the foam liquid and water are mixed evenly and improving the fire extinguishing efficiency.

[0053] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A tunnel fire-fighting foam filling system, characterized in that, include: Several fire-fighting boxes are spaced apart inside the tunnel; each fire-fighting box contains a foam liquid storage tank and a first control device. The foam liquid storage tank is equipped with a first liquid level sensor. The top of the foam liquid storage tank has a foam liquid filling port and a sealing cap for closing the filling port. The bottom of the foam liquid storage tank has a foam liquid outlet pipe, on which a solenoid valve, a variable frequency delivery pump, and a first flow meter are sequentially installed. The outlet of the foam liquid outlet pipe is connected to the input end of a mixer, which is also connected to a pressure water pipe. A flow regulating valve and a second flow meter are installed on the pressure water pipe. The output end of the mixer is connected to one end of a mixed liquid delivery hose, and the other end of the mixed liquid delivery hose is connected to a foam gun. The first control device includes a first housing. Inside the first housing are a first controller, a first communication device, and a power supply. Outside the first housing are a first display screen and a first button module. The first liquid level sensor, solenoid valve, variable frequency delivery pump, first flow meter, flow regulating valve, second flow meter, first communication device, power supply, first display screen, and first button module are all connected to the first controller. A foam liquid filling vehicle includes a vehicle body, a foam liquid storage tank, a variable frequency high-pressure pump, a battery, and a second control device. The foam liquid storage tank, variable frequency high-pressure pump, battery, and second control device are all mounted on the vehicle body. The input end of the variable frequency high-pressure pump is connected to the bottom outlet of the foam liquid storage tank via a first infusion pipe, and the output end of the variable frequency high-pressure pump is connected to a quick connector via a second infusion pipe for connecting to the foam liquid filling port on the foam liquid storage tank. A third flow meter is installed on the first infusion pipe. The second control device includes a second housing, with a second display screen and a second button module on the outer side of the second housing, and a second controller and a second communication device on the inner side of the second housing. The variable frequency high-pressure pump, battery, third flow meter, second display screen, second button module, and second communication device are all connected to the second controller. The monitoring center is connected to the network of both the first communication device inside the fire extinguisher box and the second communication device inside the foam liquid filling vehicle.

2. A tunnel fire-fighting foam filling system according to claim 1, characterised in that: The foam liquid filling vehicle can be a handcart or an electric vehicle.

3. The tunnel fire-fighting foam liquid filling system according to claim 1, characterized in that: The first control device also includes a first on-site alarm, which is installed inside the first housing and connected to the first controller.

4. A tunnel fire-fighting foam liquid filling system according to claim 1, characterized in that: The foam liquid storage tank is equipped with a second liquid level sensor, which is connected to the second controller.

5. A tunnel fire-fighting foam liquid filling system according to claim 4, characterized in that: The foam liquid storage tank is also equipped with a temperature sensor, which is connected to the second controller.

6. A tunnel fire-fighting foam liquid filling system according to claim 5, characterized in that: The second control device also includes a second on-site alarm, which is installed inside the second housing and connected to the second controller.

7. A tunnel fire-fighting foam liquid filling system according to claim 1, characterized in that: The foam liquid filling vehicle is equipped with a battery compartment, and the battery is installed in the battery compartment.

8. A tunnel fire-fighting foam liquid filling system according to claim 7, characterized in that: The foam liquid filling vehicle is equipped with a high-pressure pump storage compartment, and the variable frequency high-pressure pump is installed in the high-pressure pump storage compartment.

9. A tunnel fire-fighting foam liquid filling system according to claim 1, characterized in that: The first communication device is connected to the monitoring center via a wired network.

10. A tunnel fire-fighting foam liquid filling system according to claim 9, characterized in that: The second communication device is connected to the monitoring center via a wireless network. The second communication device is a 4G / 5G module or a WiFi module.

Images