Combined fire extinguishing system

Abstract

The invention relates to a combined fire extinguishing system in the technical field of forest fire control, the combined fire extinguishing system comprises ground equipment, flight equipment and a fire extinguishing unit, and the ground equipment is used for transporting and storing a fire extinguishing medium; the fire extinguishing unit comprises a first fire pump, a fire hose, a fire-fighting lance and a nozzle; one end of the first fire pump is connected with ground equipment, the other end of the first fire pump is connected with a fire-fighting lance through a fire hose, and a water outlet of the fire-fighting lance is connected with a nozzle; and the flight equipment is used for fixing the fire-fighting lance and carrying the fire-fighting lance to the target fire extinguishing position in response to first control operation of the remote control personnel. On the basis, the combined fire extinguishing system is applied to forest fire fighting, a fire-fighting lance is carried to a target fire extinguishing position close to a fire point through flight equipment, firemen do not need to hold fire-fighting equipment to be close to the fire point, the advantages of being easy and convenient to operate, short in consumed time and high in efficiency are achieved, and meanwhile the personal safety of the firemen is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of wildfire prevention and control, and in particular to a combined fire extinguishing system. Background Art

[0002] With the frequent occurrence of extreme weather events such as droughts and strong winds, wildfires (especially forest fires) are on the rise. Due to the inconvenient transportation and complex terrain in mountainous areas, fire trucks are parked far away from the fire, requiring firefighters to carry firefighting equipment close to the fire to carry out firefighting and rescue operations. This is difficult to operate, time-consuming, and inefficient. At the same time, working in close proximity also threatens the safety of firefighters. Summary of the Invention

[0003] In order to solve the above technical problems, the present disclosure provides a combined fire extinguishing system.

[0004] The present disclosure provides a combined fire extinguishing system, comprising:

[0005] Ground equipment for transporting and storing fire extinguishing media;

[0006] a fire extinguishing unit comprising a first fire pump, a fire hose, a fire nozzle, and a sprinkler; one end of the first fire pump is connected to the ground equipment, the other end of the first fire pump is connected to the fire nozzle via the fire hose, and the water outlet of the fire nozzle is connected to the sprinkler;

[0007] The flying device is used to fix the fire-fighting water gun and carry the fire-fighting water gun to a target fire-fighting location in response to a first control operation of a remote control operator.

[0008] Optionally, the pressure of the first fire water pump is greater than or equal to 10 MPa, the fire extinguishing lift is greater than or equal to 500 m, and the fire extinguishing radius is greater than or equal to 3 km.

[0009] Optionally, the nozzle includes a first nozzle, the range of the first nozzle is greater than or equal to 20m, and the flow rate of the first nozzle is less than or equal to 1L / s;

[0010] The fire hose includes a first fire hose, and the diameter of the first fire hose is less than or equal to 20 mm.

[0011] Optionally, the nozzle includes a second nozzle, the range of the second nozzle is greater than or equal to 20m, and the flow rate of the second nozzle is greater than 1L / s;

[0012] The fire hose includes a second fire hose, and the diameter of the second fire hose is greater than or equal to 40 mm.

[0013] Optionally, the fire extinguishing unit further includes a transfer module;

[0014] The water inlet of the transfer module is connected to the ground equipment through the second fire hose, and the water outlet of the transfer module is connected to the fire hose through the second fire hose.

[0015] Optionally, the transfer module includes a second fire water pump;

[0016] The pressure of the second fire water pump is greater than or equal to 5MPa, the fire extinguishing head is greater than or equal to 500m, and the fire extinguishing radius is greater than or equal to 2km.

[0017] Optionally, the transfer module further includes a transfer water tank;

[0018] The water inlet of the transfer water tank is connected to the first fire water pump through the second fire water hose, the water outlet of the transfer water tank is connected to the water inlet of the second fire water pump, and the water outlet of the second fire water pump is connected to the fire hose through the second fire water hose.

[0019] Optionally, the combined fire extinguishing system further includes: a delivery device, which is used to deliver the anti-reignition fire extinguishing agent into the transfer water tank or the ground equipment according to a preset ratio.

[0020] Optionally, the nozzle includes a third nozzle, and the range of the third nozzle is less than or equal to 5m.

[0021] Optionally, the fire extinguishing unit further includes a tripping mechanism;

[0022] The fire hose is connected to the fire hose gun via the tripping mechanism;

[0023] The tripping mechanism is used to disconnect the fire hose and the fire hose nozzle in response to a second control operation by a remote control operator.

[0024] The technical solution provided by the present disclosure has the following advantages compared with the existing technology:

[0025] The combined fire extinguishing system provided by the present disclosure includes: ground equipment for transporting and storing fire extinguishing media; a fire extinguishing unit including a first fire pump, a fire hose, a fire lance, and a nozzle; one end of the first fire pump is connected to the ground equipment, the other end of the first fire pump is connected to the fire lance via the fire hose, and the water outlet of the fire lance is connected to the nozzle; and an aerial device is used to secure the fire lance and, in response to a first control operation by a remote operator, to carry the fire lance to a target fire extinguishing location. Based on this, the combined fire extinguishing system is applied to fighting wildfires, using the aerial device to carry the fire lance to the target fire extinguishing location near the fire source, eliminating the need for firefighters to hold firefighting equipment close to the fire source. The system has the advantages of simple operation, short operation time, and high efficiency, while also improving the personal safety of firefighters. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0027] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 A schematic structural diagram of a combined fire extinguishing system provided in an embodiment of the present disclosure;

[0029] Figure 2 A schematic structural diagram of another combined fire extinguishing system provided in an embodiment of the present disclosure;

[0030] Figure 3 A structural diagram of another combined fire extinguishing system provided in an embodiment of the present disclosure;

[0031] Figure 4 A structural schematic diagram of another combined fire extinguishing system provided in an embodiment of the present disclosure.

[0032] Among them, 1. Ground equipment; 21. Fire hose; 211. First fire hose; 212. Second fire hose; 22. Fire hose; 23. Nozzle; 231. First nozzle; 232. Second nozzle; 233. Third nozzle; 24. Trip mechanism; 25. Transfer module; 251. Second fire pump; 252. Transfer water tank; 3. Flight equipment. DETAILED DESCRIPTION

[0033] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0035] The combined fire extinguishing system provided by the embodiment of the present disclosure is exemplarily described below with reference to the accompanying drawings.

[0036] In some embodiments, as Figures 1-4As shown in any figure, the combined fire extinguishing system includes: ground equipment 1, a fire extinguishing unit and flying equipment 3.

[0037] The ground equipment 1 is used to transport and store fire extinguishing media. It includes a fire truck and a water tank for storing the fire extinguishing media. Fire extinguishing media include, but are not limited to, water, as well as other fire extinguishing media known to those skilled in the art, such as foam, which are not limited here. In some embodiments, the water capacity of the ground equipment 1 is greater than or equal to 2 tons.

[0038] The flying device 3 is used to fix the fire-fighting water gun 22 and carry the fire-fighting water gun 22 to a target fire-fighting location in response to a first control operation of a remote control operator.

[0039] The flying device 3 includes a drone. For example, Figures 1-4 As shown in any of the figures, the fire hose 22 is fixed to the bottom of the drone. The drone includes a high-load drone with a load capacity of 50kg to 300kg. In some embodiments, the high-load drone includes a tandem twin-rotor structure with the mounting point located between the two rotors, providing greater stability.

[0040] The flying device 3 also includes a remote controller, which is operated by a remote controller on the ground. The drone responds to the first control operation of the remote controller and flies to the target fire extinguishing location, thereby carrying the fire hose 22 to the target fire extinguishing location.

[0041] The distance between the target fire extinguishing position and the fire point is less than or equal to a first preset distance and greater than or equal to a second preset distance, with the first preset distance being greater than the second preset distance. This configuration allows the drone to be as close to the fire point as possible while ensuring its safety, thereby improving fire extinguishing efficiency.

[0042] The fire extinguishing unit includes a first fire pump (not shown), a fire hose 21, a fire lance 22, and a nozzle 23. One end of the first fire pump is connected to the ground equipment 1, and the other end is connected to the fire lance 22 via the fire hose 21. The outlet of the fire lance 22 is connected to the nozzle 23. With this arrangement, the first fire pump is used to pressurize and increase the head of the fire extinguishing medium, pumping it through the fire hose 21 to the fire lance 22, where it is sprayed from the nozzle 23 located at the outlet of the fire lance 22. The fire extinguishing medium is then carried by the aircraft 3 to the target fire extinguishing location near the fire source. The fire extinguishing medium flowing from the nozzle 23 extinguishes the fire source at the fire source. This process does not require firefighters to hold firefighting equipment close to the fire source, resulting in simple operation, reduced time consumption, and high efficiency, while also improving the personal safety of firefighters.

[0043] It should be noted that Figure 1 、 24 merely illustrates an exemplary fire extinguishing unit including a single fire hose 21, but does not limit the combined fire extinguishing system provided by the disclosed embodiments. In other embodiments, the number of fire hoses 21 may be set as needed, for example, two, three, or more, with multiple fire hoses 21 connected in series.

[0044] The combined fire extinguishing system provided by the embodiment of the present disclosure includes: ground equipment 1, flying equipment 3, and a fire extinguishing unit. The ground equipment 1 is used to transport and store fire extinguishing media; the fire extinguishing unit includes a first fire pump, a fire hose 21, a fire lance 22, and a nozzle 23; one end of the first fire pump is connected to the ground equipment 1, and the other end of the first fire pump is connected to the fire lance 22 via the fire hose 21, and the water outlet of the fire lance 22 is connected to the nozzle 23; the flying equipment 3 is used to fix the fire lance 22 and, in response to a first control operation by a remote control operator, carry the fire lance 22 to a target fire extinguishing location. Based on this, the combined fire extinguishing system is applied to fighting wildfires. The flying equipment 3 is used to carry the fire lance 22 to a target fire extinguishing location near the fire point, eliminating the need for firefighters to hold firefighting equipment close to the fire point. The system has the advantages of simple operation, short time consumption, and high efficiency, while also improving the personal safety of firefighters.

[0045] In some embodiments, the pressure of the first fire water pump is greater than or equal to 10 MPa, the fire extinguishing lift is greater than or equal to 500 m, and the fire extinguishing radius is greater than or equal to 3 km.

[0046] With this arrangement, the first fire pump is used to increase the pressure and lift, and deliver the fire extinguishing medium to a height greater than or equal to 500m in the vertical direction or greater than 3000m in the horizontal direction, thus overcoming the inconvenience of ground fire trucks or personnel transportation.

[0047] In some embodiments, as Figure 1 As shown in or 2, the nozzle 23 includes a first nozzle 231, the range of the first nozzle 231 is greater than or equal to 20m, and the flow rate of the first nozzle 231 is less than or equal to 1L / s; the fire hose 21 includes a first fire hose 211, and the diameter of the first fire hose 211 is less than or equal to 20mm.

[0048] In this embodiment, the load capacity of the flight equipment 3 is limited. By controlling the diameter of the first fire hose 211 to be less than or equal to 20 mm, and / or the flow rate of the first nozzle 231 to be less than or equal to 1 L / s, the control device 3 is prevented from being overloaded due to excessive flow of the fire extinguishing medium, which is beneficial to improving the stability of the flight equipment 3.

[0049] In this embodiment, the range of the first nozzle 231 is long, and the fire extinguishing medium is ejected forward from the first nozzle 231 for a long distance. The combined fire extinguishing system can be used to extinguish hillside fires, cliff fires or large crown fires with high vertical lift (such as Figure 1It can also be used to fight long-distance hillside fires or cliff fires across rivers, hillsides, and canyons (as shown in Figure 2 shown).

[0050] In some embodiments, as Figure 3 As shown, the nozzle 23 includes a second nozzle 232, the range of the second nozzle 232 is greater than or equal to 20m, and the flow rate of the second nozzle 232 is greater than 1L / s; the fire hose 21 includes a second fire hose 212, and the diameter of the second fire hose 212 is greater than or equal to 40mm.

[0051] In this embodiment, the second nozzle 232 has a longer range, allowing the fire extinguishing medium to be sprayed forward from the second nozzle 232 over a greater distance. Compared to the first nozzle 231, the second nozzle 232 has a greater flow rate. Compared to the first fire hose 211, the second fire hose 212 has a larger diameter. This combined fire extinguishing system delivers a higher flow rate of fire extinguishing medium, making it suitable for extinguishing large fires with high vertical lift, such as hillside fires, cliff fires, or large tree canopy fires.

[0052] In some embodiments, as Figure 3 As shown, the fire extinguishing unit also includes a transfer module 25; the water inlet of the transfer module 25 is connected to the ground equipment through a second fire hose 212, and the water outlet of the transfer module 25 is connected to the fire hose 22 through the second fire hose 212.

[0053] In this embodiment, the transfer module 25 is used to further increase the lift, flow rate and conveying distance, and is also used to balance the flow impact of the fire extinguishing medium and provide flow stability.

[0054] For example, Figure 3 As shown, in the combined fire extinguishing system, the fire extinguishing unit includes a transfer module 25 and two second fire hoses 212 . The transfer module 25 is located between the two second fire hoses 212 and connects the two second fire hoses 212 .

[0055] It should be noted that Figure 3 The fire extinguishing unit is shown as including one transfer module 25 and two second fire hoses 212 for exemplary purposes only and does not limit the combined fire extinguishing system provided by the disclosed embodiments. In other embodiments, the number of transfer modules 25 may be set as needed, for example, two, three, or more; multiple transfer modules 25 may be connected sequentially, or a transfer module 25 may be connected in series between two adjacent second fire hoses 212, without limitation herein.

[0056] In some implementations, such as Figure 3 As shown, the transfer module 25 includes a second fire water pump 251; the pressure of the second fire water pump 251 is greater than or equal to 5 MPa, the fire extinguishing head is greater than or equal to 500 m, and the fire extinguishing radius is greater than or equal to 2 km.

[0057] With this arrangement, the second fire water pump 251 plays a boosting role, further increasing the lift, flow rate and fire extinguishing radius.

[0058] In some implementations, such as Figure 3 As shown, the transfer module 25 also includes a transfer water tank 252; the water inlet of the transfer water tank 252 is connected to the first fire water pump through the second fire water hose 212, the water outlet of the transfer water tank 252 is connected to the water inlet of the second fire water pump 251, and the water outlet of the second fire water pump 251 is connected to the fire water gun 22 through the second fire water hose 212.

[0059] In this embodiment, a transfer water tank 252 is provided before the second fire water pump 251 , and the transfer water tank 252 balances flow impact and provides flow stability.

[0060] In some embodiments, the volume of the transfer tank is greater than or equal to 5m 3 .

[0061] In some implementations, the combined fire extinguishing system further includes a delivery device for delivering an anti-reignition fire extinguishing agent into the transfer water tank according to a preset ratio.

[0062] In this embodiment, the delivery device is used to add the anti-reignition fire extinguishing agent to the fire extinguishing medium, so that the anti-reignition fire extinguishing agent and the fire extinguishing medium are mixed in proportion, thereby improving the fire extinguishing effect and the anti-reignition effect.

[0063] In some embodiments, the combined fire extinguishing system further includes a delivery device for delivering an anti-reignition fire extinguishing agent into the ground equipment 1 (the water tank of the fire truck) according to a preset ratio.

[0064] In some implementations, such as Figure 4 As shown, the nozzle 23 includes a third nozzle 233, and the range of the third nozzle 233 is less than or equal to 5m.

[0065] In this embodiment, the third nozzle 233 has the characteristics of short range and low atomization. The fire extinguishing medium drops vertically from the third nozzle 233 and extinguishes the fire mainly in the form of a water column, which is used to extinguish a long-distance ground fire.

[0066] In some embodiments, as Figures 1-4 As shown in any figure, the fire extinguishing unit also includes a tripping mechanism 24; the fire hose 21 is connected to the fire hose 22 through the tripping mechanism 24; the tripping mechanism 24 is used to disconnect the fire hose 21 and the fire hose 22 in response to the second control operation of the remote control personnel.

[0067] In this embodiment, the tripping mechanism 24 is controlled by a remote control operator on the ground. In the event of an emergency, the remote control operator controls the tripping mechanism 24 to release, disconnecting the fire hose 21 and the fire hose 22, and causing the fire hose 21 to slide off the fire hose 22, thereby preventing the fire hose 21 from entangling the drone and affecting flight safety.

[0068] The combined firefighting system provided in the embodiments of the present application leverages the high mobility of drones, allowing them to easily carry a fire hose 22 to a height of 500 meters or to extinguish fires at distances of 2 to 3 kilometers, overcoming the inconvenience of using ground-based fire trucks or personnel. By utilizing water or adding a highly effective fire extinguishing agent to prevent re-ignition, the system overcomes the inadequate firefighting capability of conventional drones using dry powder fire extinguishing bombs.

[0069] For example, Figure 1 As shown in Figure 2, the combined fire extinguishing system includes: ground equipment 1, a fire extinguishing unit and flying equipment 3. Among them, the ground equipment 1 includes a fire truck, a water tank and a fire extinguishing agent tank (i.e., a delivery device). The water carrying capacity of the fire truck is 2t, and the volume of the fire extinguishing agent tank is 500L, which is used to add a high-efficiency anti-reignition fire extinguishing agent, which is mixed with water to extinguish the fire. The fire extinguishing unit includes a first fire pump, a first fire hose 211, a fire hose 22, a first nozzle 231 and a release mechanism 24; the large-load UAV is a longitudinal double-rotor structure, and its mounting point is located in the middle of the two rotors, with a load capacity of 260kg. The first fire pump has a pressure of 12MPa, a fire extinguishing head of not less than 600 meters, and a fire extinguishing radius of 3km. The diameter of the first fire hose 211 is less than 18mm, the range of the first nozzle 231 is greater than 20m, and the flow rate is less than or equal to 1L / s. The flying device 3 includes a large-capacity unmanned aerial vehicle (UAV). A fire hose 22 is fixed below the UAV. The water inlet of the fire hose 22 is connected to a first fire hose 211 via a release mechanism 24. The water outlet of the fire hose 22 is connected to a first nozzle 231. The UAV is vertically launched and carries the fire hose 22 to the target firefighting location. The fire hose 22 is used to extinguish hillside fires, cliff fires, or large tree crown fires with a vertical height of no more than 600 meters. It is also used to extinguish long-range wildfires across rivers, hillsides, and canyons with a horizontal distance of no more than 3000 meters. The release mechanism 24 is controlled by a ground-based remote control operator. In the event of an emergency, the remote control operator controls the release mechanism 24 to disconnect the first fire hose 211 from the fire hose 22. The first fire hose 211 slides off the fire hose 22 to prevent the hose from entanglement with the UAV and affecting flight safety.

[0070] For example, Figure 3As shown, the combined fire extinguishing system comprises ground equipment 1, a fire extinguishing unit and flight equipment 3. The ground equipment 1 comprises a fire truck and a water tank, and the water carrying capacity of the fire truck is 2t. The fire extinguishing unit comprises a first fire water pump, a second fire water hose 212, a fire water gun 22, a second nozzle 232, a tripping mechanism 24, a second fire water pump 251 and a transfer water tank 252. The large-load unmanned aerial vehicle is a longitudinal double-rotor structure, and the mounting point is located at the middle part of the two rotors, with a load of 260kg. The first fire water pump has a pressure of 12MPa, a fire extinguishing lift of not less than 600m and a fire extinguishing radius of 3km. The second fire water hose has a diameter of greater than or equal to 45mm. The second nozzle 232 has a range of greater than 25m. The second fire water pump 251 has a pressure of greater than or equal to 5MPa and a fire extinguishing radius of 2km. The transfer water tank 252 has a volume of 5m 3 . The combined fire extinguishing system uses the ground equipment 1 to replenish the transfer water tank 252, uses the second fire water pump 251 as a power source, connects the second fire water hose 212, connects the second fire water hose 212 and the fire water gun 22 through the tripping mechanism 24, connects the water outlet of the fire water gun 22 and the second nozzle 232, and is used for extinguishing large, high or long-range hillside fires, cliff fires or large tree crown fires. In addition, the combined fire extinguishing system is also equipped with a 500L fire extinguishing agent tank (i.e. a delivery device) for the transfer water tank 252, adds high-efficiency anti-reignition fire extinguishing agent to the transfer water tank 252, uses a proportional mixing device to mix water and anti-reignition fire extinguishing agent in real time at the outlet of the second fire water pump, and increases the fire extinguishing effect and anti-reignition effect.

[0071] Exemplarily, as Figure 4As shown, the combined fire-fighting system includes: ground equipment 1, a fire-fighting unit, and aerial equipment 3. Ground equipment 1 includes a fire truck, a water tank, and a fire-extinguishing agent tank. The fire truck has a water capacity of 2 tons, and the fire-extinguishing agent tank has a volume of 500L. It is used to add a high-efficiency fire-fighting agent that is mixed with water to extinguish the fire. The fire-fighting unit includes a first fire pump, a first fire hose 211, a fire nozzle 22, a third nozzle 233, and a release mechanism 24. The high-load UAV has a tandem twin-rotor structure, with its mounting point located between the two rotors and a load capacity of 260kg. The first fire pump has a pressure of 12MPa, a fire-fighting head of no less than 600 meters, and an extinguishing radius of 3km. The diameter of the first fire hose 211 is less than 18mm, and the range of the third nozzle 233 is less than 5m. Aircraft 3 includes a large-capacity drone. A fire hose 22 is secured beneath the drone. The hose's inlet is connected to a first fire hose 211 via a release mechanism 24, while the hose's outlet is connected to a third nozzle 233. The drone is then launched vertically, carrying the hose 22 to a target firefighting location. This is used to extinguish fires at long distances, up to a horizontal distance of 3,000 meters. The release mechanism 24 is controlled by a ground-based remote control operator. In the event of an emergency, the operator releases the release mechanism 24, disconnecting the first fire hose 211 from the hose 22. This allows the hose to slide off the hose 22, preventing it from entanglement with the drone and potentially impacting flight safety.

[0072] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0073] The foregoing description is intended only to provide specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments described herein, but rather to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A combined fire extinguishing system, characterized in that: include: Ground equipment for transporting and storing fire extinguishing media; a fire extinguishing unit comprising a first fire pump, a fire hose, a fire nozzle, and a sprinkler; one end of the first fire pump is connected to the ground equipment, the other end of the first fire pump is connected to the fire nozzle via the fire hose, and the water outlet of the fire nozzle is connected to the sprinkler; The flying device is used to fix the fire-fighting water gun and carry the fire-fighting water gun to a target fire-fighting location in response to a first control operation of a remote control operator.

2. The combined fire extinguishing system according to claim 1, characterized in that: The pressure of the first fire water pump is greater than or equal to 10 MPa, the fire extinguishing lift is greater than or equal to 500 m, and the fire extinguishing radius is greater than or equal to 3 km.

3. The combined fire extinguishing system according to claim 2, characterized in that: The nozzle includes a first nozzle, the range of the first nozzle is greater than or equal to 20m, and the flow rate of the first nozzle is less than or equal to 1L / s; The fire hose includes a first fire hose, and the diameter of the first fire hose is less than or equal to 20 mm.

4. The combined fire extinguishing system according to claim 2, characterized in that: The nozzle includes a second nozzle, the range of the second nozzle is greater than or equal to 20m, and the flow rate of the second nozzle is greater than 1L / s; The fire hose includes a second fire hose, and the diameter of the second fire hose is greater than or equal to 40 mm.

5. The combined fire extinguishing system according to claim 4, characterized in that: The fire extinguishing unit also includes a transfer module; The water inlet of the transfer module is connected to the ground equipment through the second fire hose, and the water outlet of the transfer module is connected to the fire hose through the second fire hose.

6. The combined fire extinguishing system according to claim 5, characterized in that: The transfer module includes a second fire water pump; The pressure of the second fire water pump is greater than or equal to 5MPa, the fire extinguishing head is greater than or equal to 500m, and the fire extinguishing radius is greater than or equal to 2km.

7. The combined fire extinguishing system according to claim 6, characterized in that: The transfer module also includes a transfer water tank; The water inlet of the transfer water tank is connected to the first fire water pump through the second fire water hose, the water outlet of the transfer water tank is connected to the water inlet of the second fire water pump, and the water outlet of the second fire water pump is connected to the fire hose through the second fire water hose.

8. The combined fire extinguishing system according to claim 7, characterized in that: Also includes: A delivery device is used to deliver the anti-reignition fire extinguishing agent into the transfer water tank or the ground equipment according to a preset ratio.

9. The combined fire extinguishing system according to claim 2, characterized in that: The nozzles include a third nozzle, and the range of the third nozzle is less than or equal to 5m.

10. The combined fire extinguishing system according to any one of claims 1 to 9, characterized in that: The fire extinguishing unit further includes a tripping mechanism; The fire hose is connected to the fire hose gun via the tripping mechanism; The tripping mechanism is used to disconnect the fire hose and the fire hose nozzle in response to a second control operation by a remote control operator.

Images