A fire emergency system for charging berth of electric vehicle

Abstract

The application belongs to the technical field of fire fighting, and discloses a charging parking space fire emergency system for electric vehicles. The charging parking space fire emergency system for electric vehicles comprises a water supply unit, an automatic opening and closing valve, a camera, an incremental valve, a manual switch valve, an alarm device, a pipe network, a spray head assembly, a backflow preventer and a drain valve. The camera is installed at the charging pile at the end of the parking space and is used for monitoring smoke generation. If smoke and firelight are identified, it is determined that a fire has broken out, and the information about the fire is sent to the automatic opening and closing valve. The water supply unit is a water tank and is connected to the automatic opening and closing valve through a pipeline. The charging parking space fire emergency system for electric vehicles can be applied to the charging environment of electric vehicles and can be used for emergency fire fighting of electric vehicles. The system can effectively extinguish the spontaneous combustion flame of electric vehicles and reduce the loss of public property safety.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of firefighting, in particular to a charging parking position fire emergency system of an electric vehicle. BACKGROUND

[0002] With the continuous development of electric vehicle technology, the market share of electric vehicles is continuously increasing. However, with the continuous increase in the sales of electric vehicles, the abnormal conditions generated in the daily use process of the electric vehicles are also continuously increasing, such as the self-ignition phenomenon of the electric vehicles, and therefore the safety problem in the parking and charging process of the new energy vehicles has become a hidden danger.

[0003] In order to solve the above problems, CN216092001U, a new energy vehicle parking position fire extinguishing device, proposes an automatic fire extinguishing system on the parking position, but the system only monitors the occurrence of fire through a visual camera and cannot handle the fire in the smoldering stage. Therefore, we propose a charging parking position fire emergency system method of an electric vehicle which can more accurately detect the occurrence of the initial fire and can more timely extinguish the fire to protect the safety of public life and property. SUMMARY

[0004] The application aims to provide a charging parking position fire emergency system of an electric vehicle to overcome the above problems of the prior art.

[0005] To achieve the above purpose, the application is implemented by the following technical scheme: a charging parking position fire emergency system of an electric vehicle, comprising a water supply unit, an automatic opening and closing valve, a camera, an incremental valve, a manual switch valve, an alarm device, a pipe network, a spray head assembly, a backflow preventer and a drain valve, the camera is installed at the end of the parking position and the charging pile for monitoring the generation of smoke, if smoke and fire are identified, it is judged that a fire has occurred, and the fire information is sent to the automatic opening and closing valve.

[0006] The water supply unit is a water tank connected with the automatic opening and closing valve through a pipeline, the automatic opening and closing valve is installed at the charging position of the electric vehicle, and a built-in thermal element of the automatic opening and closing valve is used to sense the ambient temperature, and the monitoring signal of the camera is associated to control the opening and closing of the water supply, the incremental valve is installed after the automatic opening and closing valve and connected with the automatic opening and closing valve through a pipeline, the control port of the incremental valve is provided with the manual on-off valve for controlling the opening and closing of the incremental valve, the incremental valve generates a water flow action signal after the opening and closing valve is opened, the alarm device is an audible and visual alarm which receives the water flow action signal sent by the incremental valve to perform audible and visual alarm, and the pipeline network is a water flow pipeline of the fire emergency system of the charging position of the electric vehicle, wherein the water supply unit, the automatic opening and closing valve, the incremental valve, the spray head assembly, the backflow preventer and the drain valve are connected with the pipeline network, the spray head assembly is installed at the end of the pipeline network and is the water flow outlet of the pipeline network for spraying fire extinguishing, the backflow preventer is installed after the automatic opening and closing valve and connected with the pipeline network to prevent water flow from flowing back, and the drain valve is installed in the water inlet pipeline section of the pipeline network for drainage operation.

[0007] Preferably, the spray head assembly comprises a mounting shell, a pipe channel, a dustproof film, guide rods, an upper frame, a lower plate, a connecting rod, a connecting film, a spray head, a pressure relief valve, an extension pipe and a connecting pipe, the pipe channel is arranged on the side wall of the mounting shell, the dustproof film is arranged in the hole arranged on the top of the mounting shell, and the dustproof film is provided with an opening, a plurality of guide rods are fixedly connected between the upper and lower walls in the mounting shell, the upper frame and the lower plate are slidably connected on the guide rods through the perforations on the upper frame and the lower plate, and the upper frame and the lower plate are fixedly connected through the connecting rod, the connecting film is bonded in the upper frame, the spray head is installed in the middle of the connecting film, the pressure relief valve is fixedly installed on the upper surface of the lower plate, and the pressure relief valve is in communication with the spray head through the connecting pipe, the extension pipe is installed between the lower plate and the inner bottom wall of the mounting shell, and the extension pipe is in communication with the pressure relief valve and the pipeline network respectively.

[0008] Preferably, the spray head assembly further comprises a pull rod and an extension motor, the pull rod is fixedly connected to the outer wall of the connecting pipe, and the extension motor is fixedly installed on the upper surface of the upper plate, and the output end of the extension motor is fixedly connected with the pull rod for adjusting the angle of the spray head.

[0009] Preferably, the opening on the dustproof film is in the shape of a cross, and the water outlet end of the spray head points to the middle of the opening of the dustproof film.

[0010] Preferably, the thickness of the connecting film decreases from the outside to the inside.

[0011] Preferably, when the spray head is in the mounting shell, the extension pipe is in a compressed state.

[0012] By adopting the foregoing technical scheme, the application has the following beneficial effects:

[0013]

[0013] 1. The electric vehicle charging parking fire emergency system is applied to the electric vehicle charging environment and can be used for emergency fire fighting of electric vehicle fire, can extinguish the electric vehicle spontaneous combustion flame well, and reduces the loss of public property safety.

[0014] 2. The electric vehicle charging parking fire emergency system, through the design of the spray head assembly, in a non-working state, when cars come and go, the spray head can be effectively protected from extrusion, dust falling into the spray head outlet to cause blockage, and the angle can be adjusted, and targeted fire extinguishing can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The electric vehicle parking fire emergency system layout of the application;

[0016] Figure 2 The working flow chart of the application;

[0017] Figure 3 The cross-sectional view of the spray head assembly of the application;

[0018] Figure 4 The application Figure 3 The enlarged view of A in the application.

[0019] In the figure: 1 water supply unit, 2 water valve, 3 pipe network, 4 alarm device, 5 automatic on-off valve, 6 incremental valve, 7 manual on-off valve, 8 backflow preventer, 9 spray head assembly, 10 parking space, 11 camera, 12 installation shell, 13 pipe channel, 14 dust-proof film, 15 guide rod, 16 upper frame, 17 lower plate, 18 connecting rod, 19 connecting film, 20 spray head, 21 pressure relief valve, 22 telescopic pipe, 23 connecting pipe, 24 pull rod, 25 telescopic motor. DETAILED DESCRIPTION

[0020] The application will be described in detail below in combination with the drawings and specific embodiments. Note that the aspects described below in combination with the drawings and specific embodiments are only exemplary and should not be understood as limiting the protection scope of the application in any way.

[0021] In combination Figures 1-4 , an electric vehicle charging parking fire emergency system, comprising a water supply unit 1, an automatic on-off valve 5, a camera 11, an incremental valve 6, a manual on-off valve 7, an alarm device 4, a pipe network 3, a spray head assembly 9, a backflow preventer 8 and a water drain valve 2, the camera 11 is installed at the end of the charging pile of the parking space 10, used for monitoring smoke generation; if smoke and light are identified, it is judged that the fire is on, and the fire information is sent to the automatic on-off valve 5.

[0022] The water supply unit 1 is a water tank connected with the automatic opening and closing valve 5 through a pipeline, the automatic opening and closing valve 5 is installed at the electric vehicle charging parking space 10, and the automatic opening and closing valve 5 is provided with a built-in thermal element for sensing the ambient temperature, and the monitoring signal of the camera is associated to control the opening and closing of the water supply, the incremental valve 6 is installed after the automatic opening and closing valve 5 and connected with the automatic opening and closing valve 5 through a pipeline, the control port of the incremental valve 6 is provided with a manual switch valve 7 for controlling the opening and closing of the incremental valve 6, the incremental valve 6 will generate a water flow action signal after the opening and closing valve is opened, the alarm device 4 is an audible and visual alarm for receiving the water flow action signal sent by the incremental valve 6 to perform audible and visual alarm, the pipeline network 3 is a water flow pipeline of the electric vehicle charging parking space fire emergency system, wherein the water supply unit 1, the automatic opening and closing valve 5, the incremental valve 6, the spray head assembly 9, the backflow preventer 8 and the drain valve 2 are connected with the pipeline network 3, the spray head assembly 9 is installed at the end of the pipeline network 3 and is the water flow outlet of the pipeline network 3 for spraying fire extinguishing, the backflow preventer 8 is installed after the automatic opening and closing valve 5 and connected with the pipeline network 3 to prevent water flow backflow, and the drain valve 2 is installed in the water inlet pipeline section of the pipeline network 3 for water drainage operation.

[0023] The spray head assembly comprises a mounting shell 12, a pipe channel 13, a dustproof film 14, guide rods 15, an upper frame 16, a lower plate 17, a connecting rod 18, a connecting film 19, a spray head 20, a pressure relief valve 21, an extension pipe 22 and a connecting pipe 23, the pipe channel 13 is formed in the side wall of the mounting shell 12, the dustproof film 14 is arranged in the hole formed in the top of the mounting shell 12, and an opening is formed in the dustproof film 14, a plurality of guide rods 15 are fixedly connected between the upper and lower walls in the mounting shell 12, the upper frame 16 and the lower plate 17 are slidably connected to the guide rods 15 through the perforations formed in the upper frame 16 and the lower plate 17, and the upper frame 16 and the lower plate 17 are fixedly connected through the connecting rod 18, the connecting film 19 is bonded in the upper frame 16, the spray head 20 is installed in the middle of the connecting film 19, the pressure relief valve 21 is fixedly installed on the upper surface of the lower plate 17, and the pressure relief valve 21 is communicated with the spray head 20 through the connecting pipe 23, and the extension pipe 22 is installed between the lower plate 17 and the inner bottom wall of the mounting shell 12, and the extension pipe 22 is communicated with the pressure relief valve 21 and the pipeline network 3 respectively.

[0024] The spray head assembly 9 further comprises a pull rod 24 and an extension motor 25, the pull rod 24 is fixedly connected to the outer wall of the connecting pipe 23, and the extension motor 25 is fixedly installed on the upper surface of the upper plate 17, and the output end of the extension motor 25 is fixedly connected with the pull rod 24 for adjusting the angle of the spray head 20, the camera 11 can recognize the ignition point, the angle of the spray head 20 can be adjusted to extinguish the fire at the ignition point in the early stage, and the camera 11 and the automatic opening and closing valve 5 can change the working state in real time, which can change from targeted fire extinguishing to range fire extinguishing or temperature reduction, the so-called range type refers to that a plurality of spray heads 20 cooperate to cover the range of the vehicle bottom, which can improve the fire extinguishing efficiency and reduce the property loss.

[0025] The opening on the dustproof film 14 is cross-shaped, and the water outlet end of the spray head 20 points to the middle of the opening of the dustproof film 14.

[0026] The thickness of the connecting film 19 decreases from outside to inside.

[0027] The telescopic pipe 22 is in a compressed state when the spray head 20 is in the installation shell 12.

[0028] Combined Figures 1-2 The fire emergency system for the charging berth of the electric vehicle comprises the following steps:

[0029] S1: When the electric vehicle catches fire during the charging process, smoke is generated, the camera 11 is an Azure Kinect DK binocular camera, which can monitor the environment of the parking space 10 in real time, the camera 11 monitors the flame and smoke in real time through the Yolov4 target detection algorithm, when the flame and smoke are monitored at the same time, and the confidence of the flame and smoke is not less than 0.9, it is considered that the fire has occurred, and the fire signal is transmitted to the automatic on-off valve 5.

[0030] S2: When the temperature is higher than 60, the color of the automatic on-off valve 5 will change to orange, and when the camera 11 transmits the fire signal, the automatic on-off valve 5 is opened, the water flows into the spray head assembly 9, the water quickly fills the telescopic pipe 22, the lower plate 17 is lifted to make the spray head 20 open the dustproof film 14 and spray water to extinguish the fire.

[0031] S3: The incremental valve 6 is installed between the automatic on-off valve 5 and the parking space, connected through the pipe network 3, the incremental valve 6 is separately provided at each parking space 10, the incremental valve 6 can be driven by the automatic on-off valve 5, so as to increase the water flow of the water supply unit 1 into the pipe network 3, when the incremental valve 6 has water flow, the water flow action signal is transmitted to the sound and light alarm 4.

[0032] S4: The sound and light alarm 4 can receive the water flow action signal transmitted by the incremental valve 6, so as to sound and light alarm, the sound and light alarm 4 is installed on the outer wall of the public passage of the charging parking space.

[0033] S5: When the fire is extinguished, the ambient temperature sensed by the automatic on-off valve 5 is lower than 60℃, the automatic on-off valve 5 is closed, the incremental valve 6 is stopped, and the sound and light alarm 4 is stopped.

[0034] Further, the automatic opening and closing valve 5 opening operation temperature has color representation, when the automatic opening and closing valve 5 is 60℃, it is orange red; when the automatic opening and closing valve 5 is 70℃, it is red; when the automatic opening and closing valve 5 is 100℃, it is green, the automatic opening and closing valve 5 quasi working state should be normally closed state, the protection area of single automatic opening and closing valve 5 is less than or equal to 30m2, the horizontal distance between the automatic opening and closing valve 5 and the nozzle 20 is not less than 1.2m.

[0035] Further, the nominal diameter of the pipe network 3 is 35mm, the pipe network 3 is provided with a drain valve 2 for draining water in non-working condition at the water supply pipeline entering the water supply unit 1, and the pipe network 3 is provided with a backflow preventer 8 to prevent water flow from flowing back.

[0036] Further, the incremental valve 6 is provided with a manual on-off valve 7 for manually opening and closing the incremental valve 6.

[0037] Further, the water flow intensity of the electric vehicle charging parking space fire emergency system should be greater than or equal to 2L / s, wherein the water flow of the electric vehicle charging parking space fire emergency system can be known by formula (1):

[0038] (1)

[0039] Wherein, The water flow intensity of the electric vehicle charging parking space fire emergency system (L / s), The product of the average water flow intensity and the action area of the electric vehicle charging parking space fire emergency system (L / s).

[0040] Further, the nozzle assembly 9 is installed at the end of the pipe network, and the flow of the nozzle 20 can be known by formula (2):

[0041] (2)

[0042] Wherein, Q is the flow of the nozzle 20 (L / min), K is the flow coefficient of the nozzle 20, P is the working pressure of the nozzle 20 (MPa), one parking space 10 is equipped with N nozzle assemblies 9, which can directly spray and cover the protection object, and the number of nozzles 20 can be known by formula (3):

[0043] (3)

[0044] Wherein, N is the number of nozzles 20 calculated, S is the protection area (m), and W is the design supply intensity of the electric vehicle charging parking space fire emergency system [L / (min m)].

[0045] Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fire emergency system for a charging bay of an electric vehicle, characterized in that: The system comprises a water supply unit, an automatic opening and closing valve, a camera, an incremental valve, a manual switch valve, an alarm device, a pipe network, a nozzle assembly, a backflow preventer and a drain valve. The camera is installed at the end of the charging pile of the parking space to monitor smoke generation. The water supply unit is a water tank connected to the automatic opening and closing valve through a pipeline. The automatic opening and closing valve is installed at the charging parking space of the electric vehicle, and a built-in thermal element is used to sense the ambient temperature and control the opening and closing of the water supply in association with the monitoring signal of the camera. The incremental valve is installed after the automatic opening and closing valve and connected through a pipeline. The control port of the incremental valve is provided with the manual switch valve to control the opening and closing of the incremental valve. The incremental valve generates a water flow action signal after the opening and closing valve is opened. The alarm device is an audible and visual alarm that receives the water flow action signal from the incremental valve and sounds an alarm. The pipe network is the water flow pipeline of the charging parking space fire emergency system of the electric vehicle. The nozzle assembly is installed at the end of the pipe network and is the water flow outlet of the pipe network for spraying fire extinguishing. The backflow preventer is installed after the automatic opening and closing valve and connected through the pipe network to prevent water flow backflow. The drain valve is installed in the water inlet pipeline section of the pipe network for drainage operation.

2. The electric vehicle charging stall fire emergency system of claim 1, wherein: The nozzle assembly comprises a mounting shell, a pipe channel, a dustproof film, guide rods, an upper frame, a lower plate, a connecting rod, a connecting film, a nozzle, a pressure relief valve, an extension pipe and a connecting pipe.

3. A fire emergency system for an electric vehicle charging bay as claimed in claim 2, wherein: The pipe channel is opened on the side wall of the mounting shell.

4. The electric vehicle charging bay fire emergency system of claim 3, wherein: The dustproof film is provided with an opening.

5. The emergency method of a charging berth fire emergency system of an electric vehicle according to any one of claims 1-4, characterized in that: The upper frame and the lower plate are connected to the guide rods through the perforations. The connecting film is connected to the upper frame. The nozzle is installed in the middle of the connecting film. The pressure relief valve is connected to the nozzle through the connecting pipe. The extension pipe is installed between the lower plate and the inner bottom wall of the mounting shell. The extension pipe is connected to the pressure relief valve and the pipe network. The opening on the dustproof film is cross-shaped. The thickness of the connecting film decreases from the outside to the inside. The extension pipe is in a compressed state when the nozzle is in the mounting shell. The emergency method comprises the following steps: S1: the camera monitors the environment of the parking space in real time during the charging process of the electric vehicle, the camera monitors the flame and smoke in real time through the Yolov4 target detection algorithm, when the flame and smoke are monitored at the same time, and the confidence of the flame and smoke is not less than 0.9, it is considered that the fire is on, and the fire signal will be transmitted to the automatic opening and closing valve; S2: when the temperature is higher than 60℃, the color of the automatic opening and closing valve will change to orange, and when the fire signal transmitted by the camera is received, the automatic opening and closing valve is opened; S3: an incremental valve is separately arranged at each parking space, the incremental valve can be driven by the automatic opening and closing valve, so as to increase the water flow of the pipe network transmitted by the water supply unit, when the water flow flows in the incremental valve, the water flow action signal will be transmitted to the sound and light alarm; S4: the sound and light alarm can receive the water flow action signal transmitted by the incremental valve, so as to sound and light alarm, the sound and light alarm is installed on the outer wall of the public passage of the charging parking space; S5: when the fire is extinguished, the ambient temperature sensed by the automatic opening and closing valve is lower than 60℃, the automatic opening and closing valve is closed, the incremental valve is stopped, and the sound and light alarm stops alarming.

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