An intelligent fire extinguishing system for car fires at charging stations

Abstract

The present disclosure provides an intelligent fire extinguishing system for automobile fires in charging stations, including a flame detection monitoring system, a sprinkler fire extinguishing system and a control management platform. The sprinkler fire extinguishing system includes a water tank, a water pipe, a high-pressure water pump and a nozzle for generating fine water mist. The water inlet end of the water pipe is connected to the water tank, the high-pressure water pump is arranged on the water pipe, the nozzle is connected to the water outlet end of the water pipe, the nozzle includes a nozzle group for spraying the vehicle body and a ground nozzle for spraying the battery pack under the vehicle. Several of the nozzle groups are respectively arranged on the ceiling of the parking space, the nozzle group is provided with several nozzles with adjustable spray angle and spray pressure, and several of the ground nozzles are respectively arranged on the ground of the parking space. The present disclosure can extinguish open flames or delay the expansion of fires, prevent the fire from spreading to other vehicles or facilities, control the damage caused by fire accidents to the minimum level, and buy precious time for the arrival of fire rescue vehicles.

Description

Technical Field

[0001] The present disclosure relates to the technical field of fire protection, and in particular to an intelligent fire extinguishing system for automobile fires at charging stations. Background Art

[0002] With the rapid increase in the number of electric vehicles, fires caused by electric vehicles are also increasing. Pure electric vehicles are very likely to cause spontaneous combustion accidents due to battery pack failure during charging. During the charging process, electric vehicle fires may be caused by aging, damage, and short circuits of battery packs. The fire of electric vehicles is essentially a thermal runaway of the battery pack: the battery short circuit first triggers a violent chemical reaction, and the heat gathers the gas decomposed by the heat inside the battery in the narrow battery compartment, causing the battery sealing pressure to rise and rapidly expand and burst, accompanied by the generation of flammable and toxic gases, and the temperature is as high as 1500 ℃ or more, followed by the battery compartment outer package bursting; after the bursting, the battery liquid, high-temperature airflow, and oxygen quickly ignite the flammable materials in the car, forming a deflagration, and the whole vehicle catches fire. The fire caused by the battery of an electric (gasoline) vehicle is similar to having a heating source working and continuously releasing heat.

[0003] The exothermic reaction of battery thermal runaway can proceed without oxygen. The open flame is actually the reaction temperature of the battery igniting the surrounding flammable materials. Therefore, the key to extinguishing electric vehicle fires is to completely cool down the heat of the chemical reaction of the battery short circuit, to cut off the temperature, which is the key point element of the three elements of fire (combustibles, combustion-supporting materials, and temperature), and at the same time cut off the oxygen of the combustion-supporting materials to prevent high-temperature ignition. Therefore, only by cutting off these two elements can the spread of the fire be effectively controlled.

[0004] In the prior art, general dry powder and CO2 fire extinguishers can only cut off the oxygen supply, and the spraying time is short. Once the spraying is completed, the battery exothermic reaction is still in progress and still heating, which will immediately reignite and form a fire again. In view of this, the inventor has studied and designed an intelligent fire extinguishing system for charging station car fires. Summary of the invention

[0005] The present invention provides an intelligent fire extinguishing system for automobile fires at charging stations, which can quickly extinguish fires of electric vehicles at charging stations by spraying a large amount of fine water mist.

[0006] According to one aspect of the present disclosure, an intelligent fire extinguishing system for automobile fires at a charging station includes a flame detection monitoring system, a sprinkler fire extinguishing system and a control management platform, wherein the flame detection monitoring system and the sprinkler fire extinguishing system are respectively connected to the control management platform, and when the flame detection monitoring system detects a fire, the signal is converted and transmitted to the control management platform, and the control management platform sends an instruction to the sprinkler fire extinguishing system to extinguish the fire, wherein the sprinkler fire extinguishing system includes a water tank, a water pipe, a high-pressure water pump and a nozzle for generating fine water mist, wherein the water inlet end of the water pipe is connected to the water tank, the high-pressure water pump is arranged on the water pipe, the nozzle is connected to the water outlet end of the water pipe, the nozzle includes a nozzle group for spraying the vehicle body and a ground nozzle for spraying the battery pack under the vehicle, a plurality of the nozzle groups are respectively arranged on the ceiling of the parking space, the nozzle group is provided with a plurality of nozzles with adjustable spray angles and spray pressures, and a plurality of the ground nozzles are respectively arranged on the ground of the parking space.

[0007] According to at least one embodiment of the present disclosure, the nozzle group is provided with a first nozzle, a second nozzle and a third nozzle arranged from top to bottom, the first nozzle is used to spray the rear of the vehicle, the second nozzle is used to spray the middle of the vehicle and the third nozzle is used to spray the rear of the vehicle, forming a fan-shaped water wall.

[0008] According to at least one embodiment of the present disclosure, the flame detection monitoring system includes a flame detector for identifying the fire location, a data acquisition terminal for identifying vehicle characteristics, and a data intelligent analysis module, and the flame detector and the data acquisition terminal are connected to the control management platform through the data intelligent analysis module; a number of the flame detectors are distributed on the ceiling of the parking space, the data acquisition terminal identifies whether the parking space is parked and identifies the length, width, height, and position information of the vehicle, and analyzes the fire location and vehicle characteristics through the data intelligent analysis module, calculates and adjusts the spray direction, pressure, and distance of the nozzle, and forms a fine spray for as long as possible when the water volume is limited, controls the fire from spreading, deteriorating, and spreading, and buys precious time to wait for the arrival of professional fire extinguishers.

[0009] According to at least one embodiment of the present disclosure, the intelligent fire extinguishing system also includes an electrical fire monitoring system, which includes an electrical fire monitoring detector, a residual current transformer and a temperature sensor for monitoring current and voltage, and the electrical fire monitoring detector, the residual current transformer and the temperature sensor are respectively connected to the control management platform.

[0010] According to at least one embodiment of the present disclosure, the intelligent fire extinguishing system also includes a thermal imaging monitoring system, which includes an infrared thermal imaging camera. One infrared thermal imaging camera is installed on each side of the parking space ceiling, and the infrared thermal imaging camera is connected to the control and management platform.

[0011] According to at least one embodiment of the present disclosure, the sprinkler fire extinguishing system further includes a handheld fine water mist demolition and puncture spray gun, which is used to puncture the vehicle window glass and spray fire extinguishing inside the vehicle.

[0012] According to at least one embodiment of the present disclosure, the particle size Dv0.99 of the fine water mist sprayed by the nozzle is 200-400 microns.

[0013] According to at least one embodiment of the present disclosure, the control management platform includes a server, an operation host and a user terminal, and the operation host and the user terminal are respectively connected to the server.

[0014] According to at least one embodiment of the present disclosure, the water tank is provided with a water level controller, which automatically replenishes water when the water storage capacity of the water tank is insufficient.

[0015] After adopting the above technical solution, the present disclosure has the following beneficial effects:

[0016] The present disclosure sprays a large amount of fine water mist, which can achieve the comprehensive effects of rapid cooling, water vapor blocking oxygen to control open flames, and shielding heat radiation under the triple effects of cooling, suffocating and isolating heat radiation, thereby preventing the spread of fire. The fine water mist spray fire extinguishing system adopted in the present disclosure has the dual effects and advantages of water spraying and gas fire extinguishing, which is superior to the cooling effect of the water spray system and has the continuous suffocating effect that the gas fire extinguishing system does not have, so the comprehensive fire extinguishing effect is much better than other fire extinguishing forms.

[0017] The present invention can extinguish open flames or delay the spread of fire, prevent the fire from spreading to other vehicles or facilities, control the damage caused by fire accidents to a minimum level, and buy precious time for the arrival of fire rescue vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0019] Figure 1 It is a schematic diagram of the structure of the monitoring system disclosed in the present invention.

[0020] Figure 2 It is a structural schematic diagram of the sprinkler fire extinguishing system disclosed in the present invention. DETAILED DESCRIPTION

[0021] The present disclosure is further described in detail below in conjunction with the accompanying drawings and implementations. It is understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the parts related to the present disclosure are shown in the accompanying drawings.

[0022] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] like Figure 1 and Figure 2 As shown, the present disclosure discloses an intelligent fire extinguishing system for automobile fires in charging stations, including a flame detection monitoring system 1, a sprinkler fire extinguishing system 2 and a control management platform. The flame detection monitoring system 1 and the sprinkler fire extinguishing system 2 are respectively connected to the control management platform. When the flame detection monitoring system 1 detects a fire, the signal is converted and transmitted to the control management platform. The control management platform sends an instruction to the sprinkler fire extinguishing system 2 to extinguish the fire. The sprinkler fire extinguishing system 2 includes a water tank 21, a water pipe 22, a high-pressure water pump 23 and a A nozzle 24 for generating fine water mist, the water inlet end of the water pipe 22 is connected to the water tank 21, the high-pressure water pump 23 is arranged on the water pipe 22, and the nozzle 24 is connected to the water outlet end of the water pipe 22. The nozzle 24 includes a nozzle group 241 for spraying the vehicle body and a ground nozzle 242 for spraying the battery pack under the vehicle. Several of the nozzle groups 241 are respectively arranged on the parking space ceiling 200. The nozzle group 241 is provided with several nozzles with adjustable spray angle and spray pressure. Several of the ground nozzles 242 are respectively arranged on the ground of the parking space 300.

[0024] According to at least one embodiment of the present disclosure, the nozzle group 241 is provided with a first nozzle 2411, a second nozzle 2412 and a third nozzle 2413 arranged from top to bottom, the first nozzle is used to spray the rear of the vehicle, the second nozzle is used to spray the middle of the vehicle and the third nozzle is used to spray the rear of the vehicle, forming a fan-shaped water wall to achieve full coverage spraying of the vehicle body. The nozzle group 241 also includes a solenoid valve for adjusting the spray angle and spray pressure of the nozzle.

[0025] According to at least one embodiment of the present disclosure, the flame detection monitoring system 1 includes a flame detector 11 for identifying the fire location, a data acquisition terminal for identifying vehicle characteristics, and a data intelligent analysis module, and the flame detector 11 and the data acquisition terminal are connected to the control management platform through the data intelligent analysis module; a number of the flame detectors 11 are distributed on the ceiling of the parking space, and the data acquisition terminal identifies whether the parking space is parked and identifies the length, width, height, and position information of the vehicle, and analyzes the fire location and vehicle characteristics through the data intelligent analysis module, calculates and adjusts the spray direction, pressure, and distance of the nozzle, and forms a fine spray for as long as possible when the water volume is limited, controls the fire from spreading, deteriorating, and spreading, and buys precious time to wait for the arrival of professional fire extinguishers.

[0026] According to at least one embodiment of the present disclosure, the thermal imaging monitoring system 3 includes an infrared thermal imaging camera 31 , one of which is installed on each side of the parking space ceiling 200 , and the infrared thermal imaging camera is connected to the control and management platform.

[0027] The infrared thermal imaging camera 31 is used to assist in monitoring the temperature of each charging pile. When the flame temperature on site exceeds the fire warning value, an alarm is immediately sounded. At the same time, combined with the flame detection monitoring system, a double warning for each charging pile is realized. When the infrared thermal imaging camera and the flame detector report fire alarm information at the same time, the system can directly link the sprinkler fire extinguishing system to realize the fire extinguishing action and minimize the fire loss.

[0028] According to at least one embodiment of the present disclosure, the electrical fire monitoring system includes an electrical fire monitoring detector, a residual current transformer and a temperature sensor for monitoring current and voltage, and the electrical fire monitoring detector, the residual current transformer and the temperature sensor are respectively connected to the control management platform.

[0029] The electrical fire monitoring detector is installed on the secondary distribution cabinet of each charging pile power supply system to realize status monitoring of the electrical circuit, prevent fire accidents caused by electrical circuit failures, realize effective management of the charging station, and improve the level of daily fire management.

[0030] According to at least one embodiment of the present disclosure, the sprinkler fire extinguishing system further includes a handheld fine water mist demolition and puncture spray gun, which is used to puncture the vehicle window glass and spray fire extinguishing inside the vehicle.

[0031] The fine water mist demolition and puncture spray gun with manual demolition function is used to break the car window and puncture the battery compartment to extinguish the fire. The fine water mist evaporates quickly when it encounters high temperature, taking away a lot of heat. At the same time, the large amount of water vapor generated forms a local positive pressure and effectively blocks the supply of oxygen. This combined effect (cooling down and blocking oxygen) can effectively extinguish the burning electric vehicle. The important parts of the vehicle body are demolished (breaking windows, perforating, tearing) to transport the fine water mist into the fire space; the fine water mist demolition and puncture spray gun cooperates to send the fine water mist deep into the battery compartment and directly reach the high temperature area of ​​the battery thermal reaction. After the open fire is extinguished, the fine water mist should be sprayed continuously to wet all combustibles and closed compartments (including the battery compartment, trunk, and front chassis) in the car to effectively reduce the risk of re-ignition. This combination of equipment has a good fire extinguishing effect on fires in confined spaces such as electric vehicles, and will not reignite.

[0032] According to at least one embodiment of the present disclosure, the present disclosure is also provided with an equipment cabinet 4, which is arranged next to the charging pile 100, and is provided with a fire alarm host, data storage equipment, network transmission equipment, etc.; the equipment cabinet is installed in the open space between the two charging piles, and a cement base needs to be poured.

[0033] According to at least one embodiment of the present disclosure, the particle size Dv0.99 of the fine water mist sprayed by the nozzle is 200-400 microns, the nozzle flow rate is 6-10L / min, the spraying umbrella angle is 40-90 degrees, and the penetration distance is 5-9 meters.

[0034] According to at least one embodiment of the present disclosure, the control management platform includes a server, an operation host and a user terminal, and the operation host and the user terminal are respectively connected to the server.

[0035] The server centrally configures and manages the users, roles, permissions, and equipment in the system. The operating host accesses the server through the B / S architecture to facilitate the configuration, information viewing, and alarm handling within the scope of each permission. The user terminal provides users at all levels with real, effective, and real-time alarm, fault, and operation information, realizing the organic combination of human defense and technical defense, and comprehensively improving the scientific and technological means of fire supervision and management. Different authorized users can enter the platform to conveniently view various system information such as water tank water level, water pipe pressure, fire protection facility status, alarm information, and on-duty personnel status.

[0036] According to at least one embodiment of the present disclosure, the water tank is provided with a water level controller, which automatically replenishes water when the water storage capacity of the water tank is insufficient.

[0037] The disclosed system is started under the action of flame or temperature sensor signal; first, the charging power supply is disconnected; the high-pressure pump group works to spray fine water mist on the accident vehicle in a covering manner to suppress the spread of fire and prevent the burning vehicle from spreading to other vehicles; after the personnel are in place, a handheld fine water mist breaking and puncturing spray gun is used to break the car window and puncture the battery compartment to extinguish the fire.

[0038] The present invention is different from the traditional water sprinkler fire fighting system. If the water sprinkler system is understood as a two-dimensional fire extinguishing system: it only statically covers an area from top to bottom; then the water mist system of the present invention is a dynamic three-dimensional fire extinguishing system: it adopts the technical solution of spraying water mist from the side and the ground, and covers the vehicle body at the same time. When there is no combustion, the protection area is covered to prevent the ignition of nearby vehicles; after encountering the heat of combustion, the water mist will flow in the direction of the heat flow field under the impetus of the temperature gradient, and participate in the heat convection cycle. The heat causes the water droplets to evaporate and produce steam: the droplets absorb heat violently under the action of the latent heat of vaporization at the moment of evaporation, reducing the temperature of the fire scene, and the water vapor blocks oxygen and suffocates the combustion.

[0039] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0040] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. An intelligent fire extinguishing system for automobile fires at charging stations, characterized in that: It includes a flame detection monitoring system, a sprinkler fire extinguishing system and a control management platform. The flame detection monitoring system and the sprinkler fire extinguishing system are respectively connected to the control management platform. When the flame detection monitoring system monitors a fire, the signal is converted and transmitted to the control management platform. The control management platform sends an instruction to the sprinkler fire extinguishing system to extinguish the fire. The sprinkler fire extinguishing system includes a water tank, a water pipe, a high-pressure water pump and a nozzle for generating fine water mist. The water inlet end of the water pipe is connected to the water tank, the high-pressure water pump is arranged on the water pipe, and the nozzle is connected to the water outlet end of the water pipe. The nozzle includes a nozzle group for spraying the vehicle body and a ground nozzle for spraying the battery pack under the vehicle. Several of the nozzle groups are respectively arranged on the ceiling of the parking space. The nozzle group is provided with several nozzles with adjustable spray angle and spray pressure. Several of the ground nozzles are respectively arranged on the ground of the parking space; The flame detection monitoring system includes a flame detector for identifying the fire location, a data acquisition terminal for identifying vehicle characteristics, and a data intelligent analysis module. The flame detector and the data acquisition terminal are connected to the control management platform through the data intelligent analysis module; a number of the flame detectors are distributed on the ceiling of the parking space, the data acquisition terminal identifies whether the parking space is parked and identifies the length, width, height, and position information of the vehicle, and analyzes the fire location and vehicle characteristics through the data intelligent analysis module, and calculates and adjusts the spray direction, pressure, and distance of the nozzle.

2. The fire extinguishing system according to claim 1, characterized in that: The nozzle group is provided with a first nozzle, a second nozzle and a third nozzle arranged from top to bottom, the first nozzle is used for spraying the rear of the vehicle, the second nozzle is used for spraying the middle of the vehicle and the third nozzle is used for spraying the rear of the vehicle, forming a fan-shaped water wall.

3. The fire extinguishing system according to claim 1, characterized in that: The intelligent fire extinguishing system also includes an electrical fire monitoring system, which includes an electrical fire monitoring detector, a residual current transformer and a temperature sensor for monitoring current and voltage. The electrical fire monitoring detector, the residual current transformer and the temperature sensor are respectively connected to the control management platform.

4. The fire extinguishing system according to claim 1, characterized in that: The intelligent fire extinguishing system also includes a thermal imaging monitoring system, which includes an infrared thermal imaging camera. One infrared thermal imaging camera is installed on each side of the parking space ceiling, and the infrared thermal imaging camera is connected to the control and management platform.

5. The fire extinguishing system according to claim 1, characterized in that: The sprinkler fire extinguishing system also includes a handheld fine water mist breaking and piercing spray gun, which is used to pierce the car window glass and spray fire extinguishing inside the car.

6. The fire extinguishing system according to claim 1, characterized in that: The particle size Dv0.99 of the fine water mist sprayed by the nozzle is 200-400 microns.

7. The fire extinguishing system according to claim 1, characterized in that: The control management platform includes a server, an operation host and a user terminal, and the operation host and the user terminal are respectively connected to the server.

8. The fire extinguishing system according to claim 1, characterized in that: The water tank is provided with a water level controller, which automatically replenishes water when the water storage capacity of the water tank is insufficient.

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