CN111529998A - Electric bus fire extinguishing system and fire extinguishing method thereof - Google Patents
Electric bus fire extinguishing system and fire extinguishing method thereof Download PDFInfo
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- CN111529998A CN111529998A CN202010518167.2A CN202010518167A CN111529998A CN 111529998 A CN111529998 A CN 111529998A CN 202010518167 A CN202010518167 A CN 202010518167A CN 111529998 A CN111529998 A CN 111529998A
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- fire extinguishing
- fire
- centrifugal pump
- controller
- extinguishing agent
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/005—Delivery of fire-extinguishing material using nozzles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
Abstract
The invention provides an electric bus fire extinguishing system and a fire extinguishing method thereof, wherein the fire extinguishing system comprises a storage box, a spraying assembly, a power part, a pressure sensor and an electric control assembly, wherein the storage box is arranged on an electric bus and is used for storing a fire extinguishing agent; the spraying assembly comprises a first spray head communicated with the storage box through a first pipeline and a second spray head communicated with the storage box through a second pipeline; the power part comprises a motor and a centrifugal pump; the pressure sensor is arranged at the outlet position of the centrifugal pump; the electric control assembly comprises a controller, an alarm connected with the controller, and a plurality of smoke detectors, temperature detectors and electromagnetic valves connected with the controller; the fire extinguishing method realizes that the first spray head and the second spray head spray the fire extinguishing agent by the controller acting on the motor, the centrifugal pump and the electromagnetic valve, thereby finishing fire extinguishing. The fire extinguishing system can efficiently and quickly extinguish fire, and the fire extinguishing method has simple steps and is easy to operate.
Description
Technical Field
The invention relates to the technical field of bus fire fighting, in particular to an electric bus fire extinguishing system and a fire extinguishing method thereof.
Background
With the development of the transportation industry, the traffic safety is more and more emphasized by the countries and enterprises. Particularly, in the aspect of fire safety of public transportation, the JT/T1240-2019 industry standard is issued by the national department of transportation on 3.1.2019, and the technical requirements of the industry are definitely specified, so that fire production and operation of the industry are more standardized.
As a type of public transportation, the electric bus has fire-fighting potential safety hazards such as man-made fire, ignition of flammable and explosive objects, battery ignition and the like. However, most of the existing electric buses are provided with traditional dry powder fire extinguishers, and when fire is extinguished, the fire is extinguished manually. The preparation has the following defects: the manual fire extinguishing can not reach the fire point in time, the fire extinguishing is slow, the effect is poor, the environment is not protected enough, the fire can not be extinguished, and the safety of personnel can not be guaranteed. Although having configured automatic fire extinguishing device to some electronic bus, receive national medicament standard's restriction, can only realize passenger cabin and battery compartment independently to put out a fire under two independent operating system, specifically be: the passenger cabin uses a traditional fire extinguisher and a spraying system of water-based fire extinguishing agent, and the air pressure of the air storage tank is used for driving spraying; the battery compartment adopts a pressure storage type fire extinguisher of heptafluoropropane or hexafluoropropane, the spraying time is only 1-2 seconds, the spraying range is limited, and complete fire extinguishing cannot be ensured. This configuration has the following disadvantages: the passenger cabin and the battery cabin are independently put out a fire under two independent operation systems, so that the installation and use cost is overhigh; the dose of the medicament of the battery compartment fire extinguisher is not enough, so that the spraying range is limited, complete fire extinguishing cannot be guaranteed, and in addition, intelligent operation and spraying cannot be realized for the battery compartment fire extinguisher.
In summary, there is an urgent need for an electric bus fire extinguishing system and a fire extinguishing method thereof to solve the problems of manual fire extinguishing, independent fire extinguishing of the passenger cabin and the battery compartment under two independent operation systems, and insufficient dosage of the medicament in the prior art.
Disclosure of Invention
The invention aims to provide an electric bus fire extinguishing system, which has the following specific technical scheme:
the electric bus comprises a cab, a passenger cabin and at least one battery cabin, the fire extinguishing system comprises a storage box, a spraying assembly, a power part, a pressure sensor and an electric control assembly, the storage box is arranged on the electric bus and used for storing fire extinguishing agents, and the storage box comprises a fire extinguishing agent inlet arranged at the top and a fire extinguishing agent outlet arranged at the bottom;
the spraying assembly comprises first spray heads communicated with the storage box through first pipelines and second spray heads communicated with the storage box through second pipelines, the number of the first spray heads is at least two, the first spray heads are arranged at the top of the passenger cabin at intervals along the length direction of the passenger cabin, the number of the second spray heads is at least the same as that of the battery cabins, and at least one second spray head is arranged at the top of each battery cabin;
the power part comprises a motor and a centrifugal pump, the input end of the motor is connected with a power supply through a circuit, the output shaft of the motor is connected with the centrifugal pump, and the inlet of the centrifugal pump is connected with the fire extinguishing agent outlet of the storage box through a third pipeline and used for conveying the fire extinguishing agent to the first pipeline and the second pipeline and spraying the fire extinguishing agent through the first spray head and the second spray head;
the pressure sensor is arranged at the outlet position of the centrifugal pump and used for monitoring the pressure of the fire extinguishing agent output by the centrifugal pump;
the electric control assembly comprises a controller, an alarm, a plurality of smoke detectors, a plurality of temperature detectors and a plurality of electromagnetic valves, wherein the input end of the controller is connected with a power supply through a circuit, the output end of the controller is respectively connected with the smoke detectors, the temperature detectors and the electromagnetic valves through the circuit, the smoke detectors are arranged in a passenger cabin, the temperature detectors are arranged in the passenger cabin and a battery cabin, the alarm is arranged in a driver cabin and used for alarming fire disasters of the passenger cabin and the battery cabin, and the electromagnetic valves are arranged in a first pipeline and a second pipeline; when fire is extinguished, the controller starts the motor and the centrifugal pump and opens the electromagnetic valve to realize that the first nozzle and the second nozzle spray extinguishing agents to finish extinguishing the fire.
Preferably, the electronic control assembly further comprises a control button, and the control button is arranged in the cab and is connected with the input end of the controller through a circuit; the electric control assembly further comprises a control panel, and the control panel is arranged in the cab and is connected with the input end of the controller through a circuit.
Preferably, the electric control assembly further comprises an auxiliary power supply connected with the controller through a circuit, wherein the auxiliary power supply is a lithium battery and is used for ensuring independent power supply of the fire extinguishing system and finishing spraying and fire extinguishing when the electric bus is powered off.
Preferably, the pressure sensor is connected with the controller through a circuit; the input end of the motor is also connected with the controller.
Preferably, the storage tank further comprises a fire extinguishing agent discharging port provided at the bottom.
Preferably, the fire extinguishing system further comprises a liquid level meter, wherein the top end of the liquid level meter is connected with the control panel through a circuit, the bottom end of the liquid level meter is inserted into the storage box from the top of the storage box, the liquid level meter is used for monitoring the capacity change of the fire extinguishing agent in the storage box, and a through hole for inserting the liquid level meter is formed in the top of the storage box.
Preferably, the spray assembly further comprises an auxiliary pipeline, wherein a plurality of connecting ports are formed in the auxiliary pipeline and used for being connected with the first pipeline and the second pipeline, and the positions, at which the liquid discharge valves are arranged, of the tail ends of the auxiliary pipeline are lower than the position of the second spray head and used for timely discharging the fire extinguishing agent remained in the first pipeline, the second pipeline and the auxiliary pipeline.
Preferably, the motor is a direct current motor, the centrifugal pump is a light horizontal multistage centrifugal pump, and the fire extinguishing agent is an M900 water-based fire extinguishing agent.
And a water valve is also arranged on the third pipeline, so that the maintenance operation is convenient.
The second purpose of the invention is to provide a fire extinguishing method, which comprises the following specific technical scheme:
a method of extinguishing a fire comprising the steps of:
step 3, manually operating the control button or the control panel, and closing the motor, the centrifugal pump and the electromagnetic valve to stop the first spray head and the second spray head from spraying the fire extinguishing agent;
the fire extinguishing method further comprises an automatic mode, when the temperature of the battery compartment reaches 140 ℃, the fire extinguishing system automatically starts the motor and the centrifugal pump through the controller and opens the electromagnetic valve to realize that the second spray head sprays the fire extinguishing agent, and fire extinguishing is finished.
Preferably, the pressure sensor monitors the pressure of the fire extinguishing agent output by the centrifugal pump to be 0.2MPa-1.2 MPa; the diameters of the drops of the fire extinguishing agent sprayed by the first spray head and the second spray head are not more than 1 mm.
The working principle of the fire extinguishing system for extinguishing the fire of the passenger cabin is as follows: when fire occurs in the passenger cabin, the controller judges the fire condition in the passenger cabin according to the data fed back by the smoke detector and the temperature detector, and warns a driver of the fire through the alarm; the driver controls the control button or the control panel manually according to the alarm, starts the motor and the centrifugal pump and opens the electromagnetic valve to realize that the first spray head and the second spray head spray the fire extinguishing agent to complete fire extinguishing.
The working principle of the fire extinguishing system to the battery compartment is as follows: when the temperature of the battery compartment reaches 90 ℃, the controller judges the fire condition in the battery compartment according to the data fed back by the temperature detector and warns a driver of the fire through the alarm; a driver manually controls the control button or the control panel according to the alarm, starts the motor and the centrifugal pump and opens the electromagnetic valve to realize that the first spray head and the second spray head spray the fire extinguishing agent to complete fire extinguishing; when the temperature of the battery compartment reaches 140 ℃, the fire extinguishing system automatically starts the motor and the centrifugal pump through the controller and opens the electromagnetic valve to realize that the second spray head sprays the fire extinguishing agent, and fire extinguishing is finished.
This embodiment passes through controller control motor drives centrifugal pump work, carries the fire extinguishing agent pressure boost in storage box in first pipeline and the second pipeline and by first shower nozzle and second shower nozzle spraying fire extinguishing agent.
Generally, the fire extinguishing of the battery compartment is to spray and cool in advance to avoid a fire disaster or extinguish the fire disaster at the initial stage of the fire disaster, so that a driver can directly take fire extinguishing measures according to an alarm when the temperature of the battery compartment reaches 90 ℃.
The technical scheme of the invention has the following beneficial effects:
(1) the fire extinguishing system in the invention abandons the fire extinguisher arranged in the battery compartment in the prior art, so that the battery compartment and the passenger cabin share one fire extinguishing system, the spraying time of the fire extinguishing agent in the battery compartment is increased to 120 seconds from the original 1-2 seconds, and the fire extinguishing effect is improved by more than 10 times, thereby comprehensively solving the problems that the spraying range of the battery compartment is limited due to insufficient dosage of the fire extinguishing agent, the fire cannot be thoroughly extinguished, and the intelligent operation and spraying of the fire extinguisher in the battery compartment cannot be realized.
(2) According to the fire extinguishing system, the control button or the control panel is manually operated, when fire is extinguished, the direct current motor and the light horizontal multistage centrifugal pump are started, the electromagnetic valve is opened, the light horizontal multistage centrifugal pump is used for pumping fire extinguishing agents into the first pipeline and the second pipeline from the storage box under the action of the direct current motor, and the first spray head and the second spray head are used for spraying to realize synchronous extinguishment of the cabin and the battery cabin, so that the fire extinguishing is efficient and rapid. The fire extinguishing system adopts the manual control button or the control panel and the double operating systems of the controller for automatically controlling fire extinguishing, so that the fire extinguishing response time of the passenger cabin and the battery cabin is shortened to 4 seconds, the fire of the passenger cabin and the battery cabin can be quickly extinguished within 13-15 seconds, the intelligent fire extinguishing of the vehicle is really realized, meanwhile, the fire point does not need to be caught in time, the fire extinguishing efficiency is improved, and the personnel safety is ensured.
(3) According to the invention, the arrangement of the liquid level meter can monitor the volume change of the fire extinguishing agent in the storage box, and when the volume of the fire extinguishing agent in the storage box is insufficient, the fire extinguishing agent is timely added through the fire extinguishing agent inlet of the storage box, so that enough fire extinguishing agent is ensured to be in the storage box during fire extinguishing.
(4) The arrangement of the fire extinguishing agent discharge port of the storage box is convenient for discharging the fire extinguishing agent in time when the fire extinguishing agent in the storage box has quality problems or the storage box is overhauled.
(5) The auxiliary pipeline is provided with a plurality of connecting ports for connecting with a first pipeline and a second pipeline, the tail end of the auxiliary pipeline is provided with a liquid discharge valve, and the position of the liquid discharge valve is lower than that of a second spray head for discharging residual fire extinguishing agent in the first pipeline, the second pipeline and the auxiliary pipeline in time.
(6) The fire extinguishing agent is an M900 water-based fire extinguishing agent, has the application temperature of-20-55 ℃, has the characteristics of quick fire extinguishing, quick temperature reduction, quick smoke elimination, burning resistance, flame retardance, permeation, adsorption, conductivity and insulation resistance (capable of extinguishing 3.6KV charged substance fire) and the like, and has the environment-friendly effect of no toxicity, no corrosion and natural digestion in a short time.
(7) The fire extinguishing method provided by the invention is simple in steps and easy to operate, and can realize automatic control fire extinguishing.
(8) The pressure of the pressure sensor monitoring fire extinguishing agent output by the centrifugal pump is 0.2MPa-1.2MPa, so that the diameters of liquid drops of the fire extinguishing agent sprayed by the first spray head and the second spray head are not more than 1mm, the fire extinguishing agent is in an atomized state, the spraying area can be increased, and a better fire extinguishing effect is achieved.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of a fire extinguishing system of embodiment 1 of the present invention installed on an electric bus;
FIG. 2 is a schematic diagram of the operation of the fire suppression system of FIG. 1 (with dashed lines representing an electrical circuit and solid lines representing either the first conduit or the second conduit or the third conduit);
the fire extinguishing agent spraying device comprises a storage box 1, a storage box 1.1, a fire extinguishing agent inlet 1.2, a fire extinguishing agent outlet 2, a spraying assembly 2.1, a first pipeline 2.2, a first spray head 2.3, a second pipeline 2.4, a second spray head 2.5, a third pipeline 2.6, an auxiliary pipeline 2.6.1, a liquid discharge valve 3, a power part 3.1, a motor 3.2, a centrifugal pump 4, a pressure sensor 5, an electric control assembly 5.1, a controller 5.2, a temperature detector 5.3, an electromagnetic valve 6, a liquid level meter 01, an electric bus 01.1, a cab 01.2, a passenger cabin 01.3 and a battery cabin.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Example 1:
referring to fig. 1 and 2, an electric bus fire extinguishing system, wherein the electric bus 01 comprises a driver cab 01.1, a passenger cabin 01.2 and four battery compartments 01.3, the fire extinguishing system comprises a storage box 1 (with the volume of 150L and formed by welding stainless steel plates, and continuously spraying for more than 120s when the storage box 1 is full of fire extinguishing agent), a spraying assembly 2, a power member 3, a pressure sensor 4 and an electric control assembly 5, the storage box 1 is used for storing the fire extinguishing agent, and the storage box 1 comprises a fire extinguishing agent inlet 1.1 arranged at the top and a fire extinguishing agent outlet arranged at the bottom;
the spraying assembly 2 comprises first spray heads 2.2 (made of stainless steel) communicated with the storage box 1 through first pipelines 2.1 (made of stainless steel) and second spray heads 2.4 (made of stainless steel) communicated with the storage box 1 through second pipelines 2.3 (made of stainless steel), the number of the first spray heads 2.2 is 9, the first spray heads are arranged at the top of the interior of the cabin 01.2 at intervals along the length direction of the cabin 01.2, the number of the second spray heads 2.4 is four, and one second spray head 2.4 is arranged at the top of each battery cabin 01.3;
the power part 3 comprises a motor 3.1 and a centrifugal pump 3.2, the input end of the motor 3.1 is connected with a power supply through a circuit, the output shaft of the motor 3.1 is connected with the centrifugal pump 3.2, the motor 3.1 and the centrifugal pump 3.2 are connected into a whole through flanges and bolts, the inlet of the centrifugal pump 3.2 is connected with the fire extinguishing agent outlet of the storage box 1 through a third pipeline 2.5 (made of stainless steel materials), and the fire extinguishing agent outlet is used for conveying the fire extinguishing agent to the first pipeline 2.1 and the second pipeline 2.3 and is connected with the first spray head 2.2 and the second spray head 2.4 through a first spray head 2;
the pressure sensor 4 is arranged at the outlet position of the centrifugal pump 3.2 and is used for monitoring the pressure of the fire extinguishing agent output by the centrifugal pump 3.2;
the electric control component 5 comprises a controller 5.1, an alarm (not shown in the figure), 2 smoke detectors (not shown in the figure), 5 temperature detectors 5.2 and 5 electromagnetic valves 5.3, the input end of the controller 5.1 is connected with a power supply through a circuit, and the output end is respectively connected with an alarm, 2 smoke detectors, 5 temperature detectors 5.2 and 5 electromagnetic valves 5.3 through circuits, 2 smoke detectors are arranged in the cabin 01.2 at intervals along the length direction of the cabin 01.2, 5 temperature detectors 5.2 are arranged in the cabin 01.2 (the temperature detectors 5.2 arranged in the cabin 01.2 are not shown in the figure) and four battery compartments 01.3 respectively, the alarm is arranged in the cab 01.1, two signal lamps are arranged on the alarm and are respectively used for alarming fire disasters of a passenger cabin 01.2 and a battery cabin 01.3, and 5 electromagnetic valves 5.3 are arranged in a first pipeline 2.1 and a second pipeline 2.3; when fire is extinguished, the controller 5.1 starts the motor 3.1 and the centrifugal pump 3.2 and opens the electromagnetic valve 5.3 to realize that the first nozzle 2.2 and the second nozzle 2.4 spray extinguishing agent, and the fire is extinguished.
The electronic control assembly 5 further comprises a control button (not shown in the figure), which is arranged in the cab 01.1 and is connected with the input end of the controller 5.1 through a circuit; the electronic control assembly 5 further comprises a control panel (not shown in the figure), and the control panel is arranged in the cab 01.1 and is connected with the input end of the controller 5.1 through a circuit.
The electric control assembly 5 further comprises an auxiliary power supply (not shown in the figure) connected with the controller 5.1 through a circuit, wherein the auxiliary power supply is a lithium battery and is used for ensuring independent power supply of the fire extinguishing system and finishing spraying and fire extinguishing when the electric bus 01 is powered off.
Referring to fig. 2, the pressure sensor 4 is electrically connected with the controller 5.1; the input end of the motor 3.1 is also connected with the controller 5.1.
With reference to fig. 2, the tank 1 also comprises a fire suppressant discharge 1.2 arranged at the bottom.
Referring to fig. 2, the fire extinguishing system further includes a level gauge 6, the top end of the level gauge 6 is connected to the control panel through a circuit, and the bottom end thereof is inserted into the storage tank 1 from the top of the storage tank 1, the level gauge 6 is used for monitoring the change of the volume of the fire extinguishing agent in the storage tank 1, and a through hole for inserting the level gauge 6 is opened at the top of the storage tank 1.
Referring to fig. 2, the spraying assembly 2 further includes an auxiliary pipeline 2.6, wherein 5 connection ports are provided on the auxiliary pipeline 2.6 for connecting with the first pipeline 2.1 and the second pipeline 2.3, a liquid discharge valve 2.6.1 is provided at the end of the auxiliary pipeline 2.6, and the position of the liquid discharge valve 2.6.1 is lower than that of the second nozzle 2.4, so as to discharge the fire extinguishing agent remaining in the first pipeline 2.1, the second pipeline 2.3 and the auxiliary pipeline 2.6 in time.
The motor 3.1 is a direct current motor, the centrifugal pump 3.2 is a light horizontal multistage centrifugal pump (rated working voltage is 24V), and the fire extinguishing agent is an M900 water-based fire extinguishing agent (model: S-100-AB-M900(-25 ℃), purchased from Zhejiang Bintian fire-fighting science and technology development Limited company).
Referring to fig. 2, a water valve is further arranged on the third pipeline 2.5, so that the maintenance operation is convenient.
A method of extinguishing a fire comprising the steps of:
step 3, manually operating the control button or the control panel, and closing the motor 3.1, the centrifugal pump 3.2 and the electromagnetic valve 5.3 to stop the first spray nozzle 2.2 and the second spray nozzle 2.4 from spraying the fire extinguishing agent;
the fire extinguishing method further comprises an automatic mode, when the temperature of the battery compartment 01.3 reaches 140 ℃, the fire extinguishing system automatically starts the motor 3.1 and the centrifugal pump 3.2 through the controller 5.1 and opens the electromagnetic valve 5.3 to realize that the second spray head 2.4 sprays the fire extinguishing agent, and fire extinguishing is finished.
The pressure sensor 4 monitors the pressure of the extinguishing agent output by the centrifugal pump 3.2 to be 0.3 MPa; the diameters of the drops of the fire extinguishing agent sprayed by the first spray head 2.2 and the second spray head 2.4 are not more than 1 mm.
The working principle of the fire extinguishing system for extinguishing the passenger cabin 01.2 is as follows: when fire occurs in the passenger cabin 01.2, the controller 5.1 judges the fire condition in the passenger cabin 01.2 according to the data fed back by the smoke detector and the temperature detector 5.2, and warns a driver through the alarm; the driver controls the control button or the control panel manually according to the alarm, starts the motor 3.1 and the centrifugal pump 3.2 and opens the electromagnetic valve 5.3 to realize that the first spray head 2.2 sprays the fire extinguishing agent to complete fire extinguishing.
The working principle of the fire extinguishing system on the battery compartment 01.3 is as follows: when the temperature of the battery compartment 01.3 reaches 90 ℃, the controller 5.1 judges the fire condition in the battery compartment 01.3 according to the data fed back by the temperature detector 5.2, and warns a driver through an alarm; a driver manually controls the control button or the control panel according to the alarm, starts to open the motor 3.1 and the centrifugal pump 3.2 and opens the electromagnetic valve 5.3 to realize that the second spray head 2.4 sprays the fire extinguishing agent to complete fire extinguishing; when the temperature of the battery compartment reaches 140 ℃, the fire extinguishing system automatically opens the motor 3.1 and the centrifugal pump 3.2 through the controller 5.1 and opens the electromagnetic valve 5.3 to realize that the second spray nozzle 2.4 sprays the fire extinguishing agent, thereby finishing fire extinguishing.
In the embodiment, the controller 5.1 controls the motor 3.1 to drive the centrifugal pump 3.2 to work, so that the fire extinguishing agent in the storage box 1 is pressurized and conveyed into the first pipeline 2.1 and the second pipeline 2.3 and is sprayed by the first spray head 2.2 and the second spray head 2.4.
Generally, the fire extinguishing of the battery compartment 01.3 is to spray and cool in advance to avoid the fire, or extinguish the fire at the initial stage of the fire, so that the driver can directly take fire extinguishing measures according to the alarm when the temperature of the battery compartment 01.3 reaches 90 ℃.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The electric bus fire extinguishing system is characterized by comprising a storage box, a spraying assembly, a power part, a pressure sensor and an electric control assembly, wherein the storage box is arranged on the electric bus and used for storing a fire extinguishing agent;
the spraying assembly comprises first spray heads communicated with the storage box through first pipelines and second spray heads communicated with the storage box through second pipelines, the number of the first spray heads is at least two, the first spray heads are arranged at the top of the passenger cabin at intervals along the length direction of the passenger cabin, the number of the second spray heads is at least the same as that of the battery cabins, and at least one second spray head is arranged at the top of each battery cabin;
the power part comprises a motor and a centrifugal pump, the input end of the motor is connected with a power supply through a circuit, the output shaft of the motor is connected with the centrifugal pump, and the centrifugal pump is connected with a fire extinguishing agent outlet of the storage box and used for conveying the fire extinguishing agent to the first pipeline and the second pipeline and spraying the fire extinguishing agent through the first spray head and the second spray head;
the pressure sensor is arranged at the outlet position of the centrifugal pump and used for monitoring the pressure of the fire extinguishing agent output by the centrifugal pump;
the electric control assembly comprises a controller, an alarm, a plurality of smoke detectors, a plurality of temperature detectors and a plurality of electromagnetic valves, wherein the input end of the controller is connected with a power supply through a circuit, the output end of the controller is respectively connected with the alarm, the smoke detectors, the temperature detectors and the electromagnetic valves through circuits, the smoke detectors are arranged in a passenger cabin, the temperature detectors are arranged in the passenger cabin and a battery cabin, the alarm is arranged in a driver cabin and used for alarming fire disasters of the passenger cabin and the battery cabin, and the electromagnetic valves are arranged in a first pipeline and a second pipeline; when fire is extinguished, the controller starts the motor and the centrifugal pump and opens the electromagnetic valve to realize that the first nozzle and the second nozzle spray extinguishing agents to finish extinguishing the fire.
2. The fire suppression system of claim 1, wherein the electronic control assembly further comprises a control button disposed in the cab and connected to the input of the controller via an electrical circuit; the electric control assembly further comprises a control panel, and the control panel is arranged in the cab and is connected with the input end of the controller through a circuit.
3. The fire extinguishing system of claim 2, wherein the electronic control assembly further comprises an auxiliary power source in circuit connection with the controller, the auxiliary power source being a lithium battery for ensuring independent power supply to the fire extinguishing system and completing fire extinguishing by spraying when the electric bus is powered off.
4. The fire suppression system of claim 3, wherein the pressure sensor is electrically connected to the controller; the input end of the motor is also connected with the controller.
5. The fire suppression system of claim 4, wherein the storage tank further comprises a fire suppressant discharge port disposed at a bottom.
6. The fire extinguishing system according to claim 5, further comprising a level gauge having a top end connected to the control panel through a circuit and a bottom end inserted into the storage tank from a top of the storage tank, the level gauge being adapted to monitor changes in the volume of the fire extinguishing agent in the storage tank, the storage tank having a through hole formed at the top for insertion of the level gauge.
7. The fire extinguishing system of claim 6, wherein the spray assembly further comprises an auxiliary pipe, the auxiliary pipe is provided with a plurality of connection ports for connecting the first pipe and the second pipe, and the auxiliary pipe is provided with a liquid discharge valve at the end thereof and the position of the liquid discharge valve is lower than that of the second spray head for discharging the fire extinguishing agent remaining in the first pipe, the second pipe and the auxiliary pipe in time.
8. The fire suppression system of claim 7, wherein the motor is a dc motor, the centrifugal pump is a lightweight horizontal multistage centrifugal pump, and the fire suppressant is an M900 water based fire suppressant.
9. A method of extinguishing a fire in a fire extinguishing system according to any one of claims 4-8, characterized by the steps of:
step 1, the controller judges the fire conditions in a passenger cabin and a battery cabin according to data fed back by a plurality of smoke detectors and temperature detectors, and warns a driver of the fire through an alarm;
step 2, manually operating the control button or the control panel, starting the motor and the centrifugal pump and opening the electromagnetic valve to realize that the first spray head and the second spray head spray the fire extinguishing agent to complete fire extinguishing, and monitoring the pressure of the fire extinguishing agent output by the centrifugal pump through the pressure sensor in the spraying process;
step 3, manually operating the control button or the control panel, and closing the motor, the centrifugal pump and the electromagnetic valve to stop the first spray head and the second spray head from spraying the fire extinguishing agent;
the fire extinguishing method further comprises an automatic mode, when the temperature of the battery compartment reaches 140 ℃, the fire extinguishing system automatically starts the motor and the centrifugal pump through the controller and opens the electromagnetic valve to realize that the second spray head sprays the fire extinguishing agent, and fire extinguishing is finished.
10. The fire extinguishing method of claim 9, wherein the pressure sensor monitors the pressure of the fire extinguishing agent as it is delivered by the centrifugal pump to be 0.2MPa-1.2 MPa; the diameters of the drops of the fire extinguishing agent sprayed by the first spray head and the second spray head are not more than 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010518167.2A CN111529998A (en) | 2020-06-09 | 2020-06-09 | Electric bus fire extinguishing system and fire extinguishing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010518167.2A CN111529998A (en) | 2020-06-09 | 2020-06-09 | Electric bus fire extinguishing system and fire extinguishing method thereof |
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| CN111529998A true CN111529998A (en) | 2020-08-14 |
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| CN202010518167.2A Pending CN111529998A (en) | 2020-06-09 | 2020-06-09 | Electric bus fire extinguishing system and fire extinguishing method thereof |
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| CN (1) | CN111529998A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4052765A1 (en) * | 2021-03-05 | 2022-09-07 | Audi AG | Motor vehicle and method for introducing an extinguishing agent into a battery |
| WO2023237045A1 (en) * | 2022-06-08 | 2023-12-14 | 许竣翔 | Cooling and fire-extinguishing device for electric power storage system |
-
2020
- 2020-06-09 CN CN202010518167.2A patent/CN111529998A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4052765A1 (en) * | 2021-03-05 | 2022-09-07 | Audi AG | Motor vehicle and method for introducing an extinguishing agent into a battery |
| CN115025418A (en) * | 2021-03-05 | 2022-09-09 | 奥迪股份公司 | Motor vehicle and method for introducing a fire extinguishing agent into a battery |
| CN115025418B (en) * | 2021-03-05 | 2024-02-20 | 奥迪股份公司 | Motor vehicle and method for introducing a fire extinguishing agent into a battery |
| WO2023237045A1 (en) * | 2022-06-08 | 2023-12-14 | 许竣翔 | Cooling and fire-extinguishing device for electric power storage system |
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