CN111921131A

CN111921131A - Automatic fire extinguishing system and method for vehicle

Info

Publication number: CN111921131A
Application number: CN202010997144.4A
Authority: CN
Inventors: 沈志华
Original assignee: Shanghai Shuoya Technology Development Co ltd
Current assignee: Shanghai Shuoya Technology Development Co ltd
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2020-11-13

Abstract

The invention discloses an automatic fire extinguishing system and method for a vehicle, belonging to the field of vehicle fire fighting, wherein the device comprises a plurality of fire monitoring points arranged on the vehicle, each fire monitoring point is provided with a sensor group, a dry powder spraying point and a foam spraying point which are fixedly arranged through a bracket, the bracket is also provided with a dry powder storage tank and a foam extinguishing agent storage tank which are used for conveying fire extinguishing substances through an internal pressure or external pressurizing device, the dry powder spraying point is connected with the dry powder storage tank through a dry powder pipeline, the foam spraying point is connected with the foam extinguishing agent storage tank through a foam pipeline, the dry powder pipeline is provided with a first control valve, the foam pipeline is provided with a second control valve, the sensor group, the external pressurizing device, the first control valve and the second control valve are electrically connected with a controller, and the controller is used for controlling the external pressurizing device according to the data of a temperature sensor and an oil gas sensor, The working states of the first control valve and the second control valve.

Description

Automatic fire extinguishing system and method for vehicle

Technical Field

The invention relates to the field of vehicle fire fighting, in particular to an automatic fire extinguishing system and method for a vehicle.

Background

With the increase of the vehicle holding amount, the vehicles are seen everywhere in cities and villages at present. The increase of vehicles is often accompanied with the increase of accidents, and various accident types all cause the vehicle to catch fire and burn easily, and vehicle accident is also accompanied with vehicle structure damage in addition, leads to the door to warp very easily and can't open to make personnel in the car difficult to escape in time, cause the injures and deaths.

In the prior art, a fire extinguisher is generally required to be arranged in a vehicle, and when the vehicle is on fire, personnel in the vehicle can automatically operate to extinguish the fire. However, the cup-shaped water waggon is also used under the conditions that the car door cannot be opened and the passenger cannot escape in time, and even when the fire is on the outside of the car, the fire extinguisher arranged in the car basically cannot extinguish the fire.

Moreover, the research finds that the vehicle fires mainly have three reasons: firstly, an engine is damaged due to an accident, and a high-temperature fuel oil leaks to cause an engine cabin to catch fire; secondly, the oil tank is damaged due to accidents, and the leaked fuel oil meets open fire to cause fire; and thirdly, the line is aged, so that the circuit is short-circuited to cause fire.

For the above two reasons, there is a need for a method or apparatus for extinguishing a fire in a vehicle.

Disclosure of Invention

Aiming at the problem that the fire is difficult to extinguish and rescue in time after the vehicle is on fire in the prior art, the invention aims to provide an automatic fire extinguishing system and method for the vehicle.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the present invention provides, in a first aspect, an automatic fire extinguishing system for a vehicle, comprising:

the system comprises fire monitoring points, a fuel tank and a fuel tank, wherein the fire monitoring points are at least arranged at the positions of an engine compartment and the fuel tank of the vehicle, and each fire monitoring point is provided with a sensor group which comprises at least one temperature sensor and at least one gasoline sensor;

the dry powder storage tank is arranged on the vehicle, dry powder is stored in the dry powder storage tank, and the dry powder storage tank is a pressure storage tank or is connected with an external pressurizing device;

the vehicle comprises a foam extinguishing agent storage tank, a pressure tank and a pressure device, wherein the foam extinguishing agent storage tank is arranged on the vehicle, the foam extinguishing agent is stored in the foam extinguishing agent storage tank, and the foam extinguishing agent storage tank is a pressure storage tank or is connected with an external pressurizing device;

the dry powder spraying points are arranged at each fire monitoring point and are connected with the dry powder storage tank through dry powder pipelines;

the foam spraying points are arranged at each fire monitoring point and are connected with the foam extinguishing agent storage tank through foam pipelines;

the first control valve is arranged on the dry powder pipeline and used for controlling the communication state between the dry powder spraying point and the dry powder storage tank;

the second control valve is arranged on the foam pipeline and used for controlling the communication state between the foam spraying point and the foam extinguishing agent storage tank;

and the controller is electrically connected with the temperature sensor, the oil and gas sensor, the external pressurizing device, the first control valve and the second control valve and is used for controlling the working states of the external pressurizing device, the first control valve and the second control valve according to the data of the temperature sensor and the oil and gas sensor.

Preferably, the first control valve and the second control valve are both one-in-multiple-out solenoid valves, an inlet of each one-in-multiple-out solenoid valve is used for being connected with the dry powder storage tank or the foam extinguishing agent storage tank, and an outlet of each one-in-multiple-out solenoid valve is used for being connected with the dry powder pipeline or the foam pipeline.

Preferably, the external pressurizing device is an air pump.

Preferably, the air pump passes through the engine drive of vehicle, perhaps the air pump is connected with the motor and the motor passes through the storage battery power supply of vehicle.

Preferably, the air pump is slidably mounted on the vehicle, a linear driving mechanism for driving the air pump to slide is fixedly mounted on the vehicle, and the air pump is connected with a belt idler wheel matched with the belt of the engine.

Preferably, the dry powder storage tank is externally coated with an insulating layer.

Further, still including setting up inside alarm and at least one carbon monoxide sensor of vehicle, the carbon monoxide sensor with the alarm all with the controller electricity is connected, just the controller with the engine control system electricity of vehicle is connected.

The invention provides a vehicle automatic fire extinguishing method in a second aspect, which comprises the following steps:

s1, receiving the temperature of the fire monitoring point detected by the temperature sensor; wherein the fire monitoring points include at least an engine compartment and a fuel tank location of the vehicle;

s2, judging whether the temperature exceeds a first threshold value, if so, judging that the fire monitoring point is a fire point, and executing a step S3, otherwise, returning to the step S1;

s3, receiving the gasoline concentration of the ignition point detected by a gasoline sensor;

s4, judging whether the gasoline concentration exceeds a second threshold value, if so, judging that the fire point is an oil fire and performing a step S5, otherwise, judging that the fire point is a common fire and performing a step S6;

s5, opening a first control valve on the dry powder pipeline to convey the dry powder extinguishing agent stored in the dry powder storage tank to the ignition point in a pressure conveying manner; wherein the dry powder pipeline is laid in advance, and two ends of the dry powder pipeline are respectively connected with the dry powder storage tank and the fire monitoring point;

s6, opening a second control valve on the foam pipeline to convey the foam extinguishing agent stored in the foam extinguishing agent storage tank to the ignition point in a pressure conveying mode; wherein the foam pipeline is laid in advance, and two ends of the foam pipeline are respectively connected with the dry powder storage tank and the fire monitoring point.

Preferably, after step S5, step S506 is further included,

s506, recording the time length of the temperature value exceeding the first threshold, detecting whether the time length exceeds a third threshold, and if so, performing step S6.

Preferably, when the pressure delivery manner described in step S4 and/or step S5 is to provide pressure by an external pressurizing device, a step S102 is further included between step S1 and step S2,

s102, judging whether the temperature exceeds a fifth threshold value, if so, starting the external pressurizing device and performing step S2, otherwise, performing step S1.

Adopt above-mentioned technical scheme, set up conflagration control point through engine compartment and the oil tank position at the vehicle easy conflagration of taking place to arrange temperature sensor and petrol sensor simultaneously at the conflagration control point, consequently can in time judge whether the conflagration takes place and whether belong to the fluid conflagration of petrol burning type, thereby the pertinence provides dry powder extinguishing agent or fire water and puts out a fire, not only can put out flame fast, can also prevent the fire behavior that the measure of fighting improper leads to and stretch the condition and take place.

Drawings

FIG. 1 is a schematic structural diagram of an automatic fire extinguishing system for a vehicle according to a first embodiment;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a block diagram of an automatic fire extinguishing system for a vehicle according to one embodiment;

FIG. 4 is another block diagram of an automatic fire extinguishing system for a vehicle according to an embodiment;

FIG. 5 is a block diagram showing another structure of an automatic fire extinguishing system for a vehicle according to the first embodiment;

FIG. 6 is a block diagram of the circuit connection of the automatic fire extinguishing system for a vehicle according to the first embodiment;

FIG. 7 is a circuit diagram of a temperature sensor controlling a first control valve and a second control valve according to an embodiment;

FIG. 8 is a circuit diagram of a gasoline sensor controlling a first control valve and a second control valve according to an embodiment;

FIG. 9 is a block diagram showing the construction of an automatic fire extinguishing system for a vehicle according to a second embodiment;

FIG. 10 is a block diagram showing the circuit connection of the automatic fire extinguishing system for a vehicle according to the second embodiment;

FIG. 11 is a flowchart of an automatic fire extinguishing method for a vehicle according to a sixth embodiment;

FIG. 12 is another flow chart of an automatic fire extinguishing method for a vehicle according to the sixth embodiment;

fig. 13 is another flow chart of the automatic fire extinguishing method for the vehicle in the sixth embodiment.

In the figure, 1-a fire monitoring point, 2-a sensor group, 21-a temperature sensor, 22-a gasoline sensor, 3-a dry powder storage tank, 4-a foam storage tank, 5-an external pressurizing device, 6-a dry powder spraying point, 7-a foam spraying point, 8-a first control valve, 9-a second control valve, 10-a controller, 11-a dry powder pipeline, 12-a foam pipeline, 13-a bracket, 100-a vehicle, 110-an engine cabin and 120-an oil tank.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Example one

As shown in fig. 1 and 2, a first aspect of the present invention provides an automatic fire extinguishing system for a vehicle, which can be applied to fire extinguishing scenes of vehicles, wherein the vehicles are not limited to vehicle types such as cars, passenger cars, trucks, etc., and vehicle types such as fuel vehicles, electric vehicles, hybrid vehicles, etc., and comprises:

the fire monitoring point 1 is provided at the engine room 110 and the fuel tank 120 of the vehicle 100, and both the engine room 110 and the fuel tank 120 have gasoline, which are locations where a fire is likely to occur after an accident occurs, so that it is necessary to provide the fire monitoring point 1. Of course, the fire monitoring point 1 may also be disposed at other locations of the vehicle 100, such as the passenger compartment location of a public transportation vehicle, as desired. In addition, it is also possible to arrange a plurality of fire monitoring points 1 at important locations, for example, the engine compartment 110 described above may be provided with two or three fire monitoring points 1, thereby better monitoring the engine position from multiple directions. Each fire monitoring point 1 is provided with a sensor group 2, the sensor group 2 includes at least one temperature sensor 21 and at least one gasoline sensor 22, and usually, when a plurality of sensors of the same type are provided, the sensors can be mutually verified, so that the accuracy is improved, and the probability of misjudgment is reduced.

The automatic fire extinguishing system for the vehicle further comprises a bracket 13, wherein the bracket 13 is fixed on the vehicle 100 through bolts, and the temperature sensor 21 and the gasoline sensor 22 are fixedly arranged on the bracket 13 through screws or a buckling structure. It will be appreciated that each fire monitoring point 1 having a sensor group 2 has a bracket 13, so that the specific mounting location of the bracket 13 may be mounted on the chassis structure of the vehicle 100, or in the passenger compartment, or in any other location, such as the dry powder reservoir 3 may be mounted in the engine compartment 110 or the fuel tank 120.

The dry powder storage tank 3 is arranged on the vehicle 100, specifically, the dry powder storage tank 3 is fixed on the support 13 through screws, dry powder for fire extinguishing is stored in the dry powder storage tank 3, and the dry powder storage tank 3 is a pressure storage tank or is connected with an external pressurizing device 5, so that the dry powder is sprayed out in a pressure conveying mode. In this embodiment, the dry powder tank 3 is preferably a pressure tank, that is, the inside thereof is filled with a pressure gas such as compressed air in addition to the dry powder for fire extinguishing, and the dry powder can be ejected by the compressed air only by opening the ejection port when in use.

A foam fire extinguishing agent tank 4, the foam fire extinguishing agent tank 4 being mounted on the vehicle 100, and in particular, the foam fire extinguishing agent tank 4 is fixed to the above-mentioned bracket 13 by means of screws. The foam extinguishing agent storage tank 4 stores foam extinguishing agent, and the foam extinguishing agent storage tank 4 is a pressure storage tank or is connected with an external pressurizing device 5. In the present embodiment, the foam fire extinguishing agent tank 4 is preferably a pressure tank, that is, the interior thereof is filled with a pressure gas such as compressed air in addition to the foam fire extinguishing agent for fire extinguishing, and the foam fire extinguishing agent is driven to be ejected outward by the compressed air inside during use.

Since only one dry powder tank 3 and one foam extinguishing agent tank 4 are provided in this embodiment, the dry powder tank 3 and the foam extinguishing agent tank 4 may be mounted on either one of the brackets 13, i.e., the dry powder tank 3 and the foam extinguishing agent tank 4 may be mounted on the same bracket 13, as shown in fig. 2; of course, the dry powder reservoir 3 and the foam fire suppressant reservoir 4 may also be mounted on two different supports 13.

A plurality of dry powder spraying points 6, a plurality of dry powder spraying points 6 are respectively arranged at each fire monitoring point 1, and each dry powder spraying point 6 is connected with the dry powder storage tank 3 through a dry powder pipeline 11. In this embodiment, the dry powder spraying point 6 is a dry powder spraying head connected to the dry powder pipeline 11, and the dry powder spraying head is fixed on the bracket 13 by means of screws and the like. In another embodiment, the dry powder injection point 6 may also be an orifice in the side wall of the duct where the dry powder duct 11 extends to the fire monitoring point 1, where the dry powder injection point 6 is formed. In this embodiment, since there are a plurality of dry powder pipes 11, a plurality of dry powder pipes 11 can connect a plurality of brackets 13, so that the hardware components of the present invention are integrated.

A plurality of foam spray points 7, a plurality of foam spray points 7 are respectively arranged at each fire monitoring point 1, and each foam spray point 7 is connected with the foam extinguishing agent storage tank 4 through a foam pipeline 12. In this embodiment, the foam spraying point 7 is a foam spraying head connected to the foam pipe 12, and the foam spraying head is fixed on the bracket 13 by means of screws or the like. Similarly, in another embodiment, the foam point 7 may be a nozzle hole in the side wall of the foam pipe 12 extending to the fire monitoring point 1, where the foam fire suppressant forms the foam point 7. Likewise, the various hardware components of the present invention can also be joined together by foam tubing 12.

First control valve 8, first control valve 8 are installed respectively on dry powder pipeline 11, and first control valve 8 is used for controlling the communicating state between dry powder spraying point 6 and the dry powder storage tank 3 for can control different dry powder spraying point 6 and dry powder storage tank 3 intercommunication through the state of adjusting first control valve 8. In this embodiment, set up first control valve 8 and be one and advance many solenoid valves, this one advances many solenoid valves's import and is used for connecting dry powder storage tank 3 through the pipeline, and its a plurality of exports then are connected with foretell a plurality of dry powder pipelines 11 respectively to through the state of adjusting first control valve 8, realize dry powder storage tank 3 and the intercommunication of different dry powder pipeline 11, because each dry powder pipeline 11 then connects different dry powder and spout some 6 respectively, consequently can realize that the dry powder from dry powder storage tank 3 to different dry powder and spout the purpose of some 6 transport in order to realize putting out a fire, as shown in fig. 3. Or, in another embodiment, each dry powder pipeline 11 may be further provided with a first control valve 8, such as an electric shutoff valve, so that different dry powder spraying points 6 can be controlled to communicate with the dry powder storage tank 3 only by controlling the on-off state of the corresponding first control valve 8, as shown in fig. 4.

And a second control valve 9, wherein the second control valve 9 is installed on the foam pipeline 12, and the second control valve 9 is used for controlling the communication state between the foam spraying point 7 and the foam extinguishing agent storage tank 4, so that different foam spraying points 7 are communicated with the foam extinguishing agent storage tank 4 by adjusting the state of the second control valve 9. In the present embodiment, the second control valve 9 is also a one-in-multiple-out solenoid valve, and may be the same as or different from the first control valve 8 in type. One inlet of the second control valve 9 is connected to the foam fire extinguishing agent storage tank 4 through a pipeline, and a plurality of outlets of the second control valve 9 are connected to the plurality of foam pipelines 12, so that the foam fire extinguishing agent storage tank 4 is communicated with different foam pipelines 12 by adjusting the state of the second control valve 9, and water can be delivered from the foam fire extinguishing agent storage tank 4 to different foam spray points 7 to extinguish fire due to the fact that the water pipelines 12 are connected to different foam spray points 7, as shown in fig. 3. Alternatively, in another embodiment, a second control valve 9, such as an electric shutoff valve, may be provided on each foam conduit 12, so that different foam injection points 7 may be controlled to communicate with the foam extinguishing agent storage tank 4 by simply controlling the on-off state of the corresponding second control valve 9, as shown in fig. 4.

The controller 10 and the controller 10 are electrically connected with the temperature sensor 21, the oil gas sensor 22, the first control valve 8 and the second control valve 9, and are used for controlling the working states of the first control valve 8 and the second control valve 9 according to data of the temperature sensor 21 and the oil gas sensor 22, as shown in fig. 6. The controller 10 may be mounted on the bracket 13 described above, or may be mounted in the vehicle 100, or may even be electrically connected to a central control system of the vehicle 100, and data processing and control may be provided by the central control system of the vehicle 100. Meanwhile, the above-described sensor group 2 (specifically, the temperature sensor 21 and the gasoline sensor 22) disposed at each fire monitoring point 1 can also be coupled as a whole by the controller 10. The present invention also provides circuit diagrams in which the electromagnetic valves (the first control valve 8 and the second control valve 9) are controlled by the temperature sensor 21 and the gasoline sensor 22, respectively, as shown in fig. 7 and 8. In fig. 8: IC1 is muA 7815, IC2 is LM311, VT1 is 2SC2002, the gasoline sensor is a gas sensor, the model number is TGS813, RT (thermistor) is MZS1Y, RP (adjustable resistor) is WT2C, C1 and C2 (electrolytic capacitors) are CD22, R1-R7 (resistor) is RT1, and the electromagnetic valve is TM54-15 HP; in fig. 7, a1 is TA75458F, a2 is TA75458, VD1 (rectifying diode) is 1N4007, VT1 (voltage stabilizing diode) is 1N4742, VT1 is 2SC1815, R1-R6 (resistor) RT1, and the solenoid valve is TM54-15 HP.

When the device is used, when a temperature sensor 21 at a certain fire monitoring point 1 of a vehicle detects that a fire occurs, a gasoline sensor 22 judges whether the fire type is an oil fire, for example, the oil fire, a controller 10 starts and controls the working state of a corresponding first control valve 8, so that a dry powder pipeline 11 corresponding to the fire monitoring point 1 is communicated with a dry powder storage tank 3, and dry powder stored in the dry powder storage tank 3 is sprayed out and flows to the fire monitoring point 1 under the pressure of compressed air, so that the purpose of extinguishing flames is achieved. Similarly, when the fire type is a normal fire, the controller 10 starts and controls the working state of the corresponding second control valve 9, so that the foam pipeline 12 corresponding to the fire monitoring point 1 is communicated with the foam fire extinguishing agent storage tank 4, and the foam fire extinguishing agent stored in the foam fire extinguishing agent storage tank 4 is sprayed out and flows to the fire monitoring point 1 under the pressure of compressed air, thereby achieving the purpose of extinguishing the fire.

In this embodiment, in order to improve the fire extinguishing capability, a plurality of dry powder storage tanks 3 and a plurality of foam fire extinguishing agent storage tanks 4 may be disposed on the vehicle 100, so as to improve the storage capacity of the corresponding fire extinguishing agent, the plurality of dry powder storage tanks 3 and the plurality of foam fire extinguishing agent storage tanks 4 are respectively and fixedly mounted on the plurality of brackets 13, so as to achieve the functions of nearby installation and nearby fire extinguishing agent supply, as shown in fig. 2, one dry powder storage tank 3 and one foam fire extinguishing agent storage tank 4 are mounted on each bracket 13. As shown in fig. 5, three fire monitoring points 1 are provided, and each fire monitoring point 1 is provided with a dry powder storage tank 3 for supplying a dry powder extinguishing agent thereto and a foam storage tank 4 for supplying a foam extinguishing agent thereto. It will also be appreciated that it is also possible to connect different numbers of dry powder lines 11 and foam lines 12 for each dry powder tank 3 or foam agent tank 4 according to the actual requirements, so as to achieve a reasonable distribution of the extinguishing agent.

In general, in order to prevent the influence of the high temperature in the engine compartment on the dry powder storage tank 3 and the foam extinguishing agent storage tank 4, in this embodiment, the dry powder storage tank 3 and the foam extinguishing agent storage tank 4 are wrapped with an insulating layer having fire-proof capability, and the material of the insulating layer may be rock wool or perlite.

This "two" sensor control different fire extinguishing agent extinguishing device, aim at according to different reasons of catching a fire, put out the conflagration with the optimization fire extinguishing agent in the very first time to effectively protect the personnel of vehicle, property safety in going, this device also is applicable to the fire extinguishing of each passenger car, freight car and new forms of energy car.

Example two

The difference from the first embodiment is that: in this embodiment, the dry powder storage tank 3 and the foam extinguishing agent storage tank 4 are both normal pressure storage tanks, so the temperature of the engine compartment has little influence on the pressure inside the engine compartment, and therefore, the insulation layer wrapped outside the dry powder storage tank 3 and the foam extinguishing agent storage tank 4 can be omitted, but in this embodiment, the external pressurizing device 5 is configured for both the dry powder storage tank 3 and the foam extinguishing agent storage tank 4, and the external pressurizing device 5 provides pressure for the dry powder storage tank 3 and the foam extinguishing agent storage tank 4 through the external pressurizing device 5, so that the dry powder or the foam extinguishing agent inside the foam extinguishing agent storage tank is sprayed out for extinguishing, and the external pressurizing device 5 is fixedly installed on the bracket 13, and the external pressurizing device 5 is electrically connected to the controller 10. In the embodiment, the external pressurizing device 5 is an air pump, and as shown in fig. 9, the output ends of the two air pumps are respectively connected with the dry powder storage tank 3 and the foam extinguishing agent storage tank 4 for providing pressure for the two.

In the input power configuration of the air pump, a motor can be arranged on the vehicle 100, the motor is mechanically connected with the air pump through a belt or a coupler, meanwhile, the motor is electrically connected with a storage battery of the vehicle 100 through a wire or a cable, correspondingly, the motor is also electrically connected with the controller 10, so that a control signal sent by the controller 10 is received, the air pump pressurizes the dry powder storage tank 3 and the foam extinguishing agent storage tank 4 at a proper time, and the dry powder or the foam extinguishing agent in the air pump is sprayed out.

In view of cost reduction, a plurality of storage tanks (the dry powder storage tank 3 or the foam extinguishing agent storage tank 4) may share one external pressurizing device 5, and in a practical implementation manner, a multi-way joint is installed at an air outlet of the external pressurizing device 5, and then the plurality of storage tanks are connected to the multi-way joint through air pipes respectively, and a control valve is installed for each air pipe, and the on-off state of each control valve is controlled by the controller 10. Of course, in another embodiment it is also possible to provide each of the dry powder reservoir 3 and the foam suppressant reservoir 4 with an external pressurizing device 5.

When the device is used, when a temperature sensor 21 at a certain fire monitoring point 1 of a vehicle detects that a fire disaster occurs, the gasoline sensor 22 judges whether the fire disaster type is an oil fire disaster or a common fire disaster, for example, the oil fire disaster, the controller 10 starts and controls the working state of the corresponding first control valve 8, so that the dry powder pipeline 11 corresponding to the fire monitoring point 1 is communicated with the dry powder storage tank 3;

then, the external pressurizing device 5 (air pump) is started again, when a plurality of storage tanks share one air pump, the operation that the controller 10 controls the on-off state of the corresponding control valve is also included, the air pump pumps air to the corresponding storage tank to pressurize the storage tank, so that dry powder or foam extinguishing agent flows out under the pressure effect and flows to the fire monitoring point 1, and the purpose of extinguishing the flame is achieved.

EXAMPLE III

The difference from the second embodiment is that: in this embodiment, the configuration of the input power of the air pump is selected depending on the existing engine of the vehicle 100 and driven by the engine.

In a specific implementation manner, a slide rail is disposed on the vehicle 100, and a slide block used in cooperation with the slide rail is disposed on a base of the air pump, so that the air pump can be slidably mounted on the vehicle 100. Meanwhile, a linear driving mechanism, such as an electric push rod or an air cylinder, for driving the air pump to slide is fixedly mounted on the vehicle 100. Meanwhile, a belt idler wheel is arranged on a rotating shaft of the air pump, and the belt idler wheel is used for enabling the air pump to be in contact with a belt of the engine when the air pump is at one position so as to bear the power of the engine, and enabling the air pump to be in drop contact with the belt of the engine when the air pump is at the other position. Correspondingly, the linear driving mechanism is electrically connected with the controller 10, so that when fire is required to be extinguished, the controller 10 controls the linear driving mechanism, the air pump is pushed to a position where the power of the engine can be received, and pressure can be provided for the corresponding storage tank.

Example four

The difference from the third embodiment is that: the manner of the air pump receiving the power of the engine is different from the third embodiment. In this embodiment, in a specific implementation manner, it is possible that a base of the air pump is fixedly mounted on the vehicle 100 through a bolt, the air pump is connected to the output shaft of the engine through an electromagnetic clutch, and the electromagnetic clutch is electrically connected to the controller 10.

When the air pump is used, the controller 10 controls the clutch state of the electromagnetic clutch to enable the air pump to receive or not receive power provided by the engine, so that pressure is provided for the storage tank when fire extinguishing operation is needed, and pressure is not provided for the storage tank when fire extinguishing operation is not needed.

EXAMPLE five

It differs from any of the above embodiments in that: also included are at least one alarm and at least one carbon monoxide sensor disposed within the passenger compartment of the vehicle 100, in this embodiment, both the alarm and the carbon monoxide sensor are configured as one. The carbon monoxide sensor and the alarm are electrically connected to the controller 10, and the controller 10 is electrically connected to an engine control system of the vehicle 100. The alarm is preferably a buzzer, so that the passenger can obtain the alarm signal better and more timely.

In use, when the carbon monoxide sensor detects that the carbon monoxide content in the vehicle 100 exceeds the standard, the controller 10 controls the alarm to alarm, and when necessary (for example, the carbon monoxide content reaches a dangerous level, or exceeds the standard for a long time), the controller 10 may also send an instruction to stop the engine control system.

EXAMPLE six

A second aspect of the present invention provides an automatic fire extinguishing method for a vehicle, as shown in fig. 11, comprising the steps of:

s1, the controller 10 receives the temperature at the fire monitoring point 1 detected by the temperature sensor 21; wherein the fire monitoring points include at least the engine compartment 110 and fuel tank 120 locations of the vehicle 100; each fire monitoring point 1 is provided with a temperature sensor 21;

s2, the controller 10 judges whether the temperature exceeds a first threshold value based on the data detected by the temperature sensor 21, if yes, the fire monitoring point 1 is judged to be the fire point, and the step S3 is carried out, otherwise, the step S1 is returned; for example, the first threshold is set to 100, and if the temperature exceeds 100 ℃, it is determined that fire is present, and the fire point is the fire monitoring point 1;

s3, the controller 10 receives the gasoline concentration of the ignition point detected by the gasoline sensor 22; each fire monitoring point 1 is provided with a gasoline sensor 22 for detecting the concentration of gasoline;

s4, the controller judges whether the gasoline concentration exceeds a second threshold value based on the data detected by the gasoline sensor 22, if so, the ignition point is judged to be an oil fire and a step S5 is carried out, otherwise, the ignition point is judged to be a normal fire and a step S6 is carried out; for example, if the second threshold value is set to 1, it is determined that the fire type at the fire point is an oil fire when the concentration of gasoline in the air exceeds 1%;

s5, the controller 10 opens the first control valve 8 on the dry powder pipeline 11 to make the dry powder fire extinguishing agent stored in the dry powder storage tank 3 in advance delivered to the ignition point in a pressure delivery mode; wherein, the dry powder pipeline 11 is laid in advance, and two ends of the dry powder pipeline are respectively connected with the dry powder storage tank 3 and the fire monitoring point 1;

s6, the controller 10 opens the second control valve 9 on the foam pipeline 12 to make the foam extinguishing agent stored in the foam extinguishing agent storage tank 4 in advance be delivered to the ignition point by a pressure delivery mode; wherein, the foam pipeline 12 is laid in advance and the two ends are respectively connected with the dry powder storage tank 4 and the fire monitoring point 1.

Preferably, after step S5, step S506 is further included:

s506, the controller 10 records a time period during which the temperature value exceeds the first threshold, and detects whether the time period exceeds a third threshold, if yes, the step S6 is performed. For example, setting the third threshold value to 20S, when the real-time temperature detected by the temperature sensor 21 exceeds 100 c for 20S, the controller 10 synchronizes operation of step S6 to put the foam extinguishing agent into fire extinguishing, thereby ensuring that the fire is extinguished as soon as possible, as shown in fig. 12.

Similarly, after step S6, step S605 may be added:

step S605, the controller 10 records a time period during which the gasoline concentration value exceeds the second threshold, and detects whether the time period exceeds a fourth threshold, if so, step S5 is synchronously performed. For example, if the fourth threshold is set to 30S, and the real-time temperature detected by the temperature sensor 21 always exceeds 1% in the period of 30S, the controller 10 synchronously performs the operation of step S5 to put the dry powder extinguishing agent into fire extinguishing, so as to ensure that the fire is extinguished as soon as possible, as shown in fig. 13.

In general, when the fire extinguishing medium is supplied from the dry powder storage tank 3 and the foam fire extinguishing agent storage tank 4 by the external pressurizing device 5, the flame caused by the vehicle fire may affect the normal operation of the external pressurizing device 5, so that in order to prevent the external pressurizing device 5 from being used normally in case of fire, it is preferable that when the pressure is supplied from the external pressurizing device in the pressure supplying manner of step S4 and/or step S5, step S102 is further included between step S1 and step S2,

step S102, the controller 10 judges whether the temperature exceeds a fifth threshold value based on the data detected by the temperature sensor 21, wherein the fifth threshold value is smaller than the first threshold value, preferably 70 ℃, and when the temperature exceeds the fifth threshold value, the controller 10 controls the external pressurizing device 5 for providing pressure for the dry powder storage tank 3 and the foam extinguishing agent storage tank 4 to work, so that the dry powder storage tank 3 and the foam extinguishing agent storage tank 4 are pressurized in advance, and the dry powder storage tank 3 and the foam extinguishing agent storage tank 4 are ensured to have enough pressure when the temperature continues to rise and fire is caused; and the process advances to step S2. When the temperature does not exceed the fifth threshold, step S1 is performed.

In the above embodiment, it is more humanized that, in order to let the driver and the passengers know the cause of fire, the degree of fire, the extinguishing situation, etc. in the first time, a video probe is arranged near each group of the "double sensors", and when a fire occurs, the video probe is directly switched to the central control large screen of the instrument panel, and the video probe can also be displayed on the instrument panel by (voice and text) prompt, so that the driver can be clear at a glance, and effective and reasonable measures can be taken.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims

1. An automatic fire extinguishing system for vehicles, characterized in that: the method comprises the following steps:

2. The automatic fire extinguishing system for vehicle according to claim 1, characterized in that: the first control valve and the second control valve are both one-in-multiple-out electromagnetic valves, the inlet of the one-in-multiple-out electromagnetic valve is used for being connected with the dry powder storage tank or the foam extinguishing agent storage tank, and the outlet of the one-in-multiple-out electromagnetic valve is used for being connected with the dry powder pipeline or the foam pipeline.

3. The automatic fire extinguishing system for vehicle according to claim 1, characterized in that: the external pressurizing device is an air pump.

4. The automatic fire extinguishing system for vehicle according to claim 3, characterized in that: the air pump passes through the engine drive of vehicle, perhaps the air pump is connected with the motor and the motor passes through the storage battery power supply of vehicle.

5. The automatic fire extinguishing system for vehicle according to claim 4, characterized in that: the air pump is slidably mounted on the vehicle, a linear driving mechanism for driving the air pump to slide is fixedly mounted on the vehicle, and the air pump is connected with a belt idler wheel matched with the belt of the engine.

6. The automatic fire extinguishing system for vehicle according to claim 1, characterized in that: the dry powder storage tank is coated with an insulating layer.

7. The automatic fire extinguishing system for vehicle according to any one of claims 1 to 6, characterized in that: still including setting up inside alarm and at least one carbon monoxide sensor of vehicle, the carbon monoxide sensor with the alarm all with the controller electricity is connected, just the controller with the engine control system electricity of vehicle is connected.

8. An automatic fire extinguishing method for vehicles is characterized in that: the method comprises the following steps:

9. The automatic fire extinguishing method for vehicles according to claim 8, characterized in that: after step S5, step S506 is also included,

10. The automatic fire extinguishing method for vehicles according to claim 8, characterized in that: when the pressure delivery manner described in step S4 and/or step S5 is to provide pressure by an external pressurizing device, step S102 is further included between step S1 and step S2,