CN112121328B - Fire control unit based on unmanned aerial vehicle - Google Patents
Fire control unit based on unmanned aerial vehicle Download PDFInfo
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
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- A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
- A62C3/0228—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires with delivery of fire extinguishing material by air or aircraft
- A62C3/0242—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires with delivery of fire extinguishing material by air or aircraft by spraying extinguishants from the aircraft
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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
- A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
- A62C3/0228—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires with delivery of fire extinguishing material by air or aircraft
- A62C3/025—Fire extinguishing bombs; Projectiles and launchers therefor
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- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
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- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
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Abstract
The invention discloses a fire fighting device based on an unmanned aerial vehicle, which relates to the technical field of unmanned aerial vehicles and comprises a water tank, a booster pump, a PLC control cabinet, a solenoid valve and a power supply box for supplying power to the booster pump, the PLC control cabinet and the solenoid valve, wherein the booster pump, the PLC control cabinet and the power supply box are all arranged on the outer top surface of the water tank, the solenoid valve and the booster pump are respectively and electrically connected with the PLC control cabinet, a water inlet of the booster pump is communicated with a water outlet of the solenoid valve through a pipeline, a water inlet of the solenoid valve is communicated with the water tank through a pipeline, a water outlet of the booster pump is connected with a plurality of high-pressure spray nozzles through a pipeline, and the plurality of high-pressure spray nozzles are arranged on the outer bottom surface of the water tank. The unmanned aerial vehicle fire extinguishing device can perform fire extinguishing operation by sprinkling water and throwing fire extinguishing bombs simultaneously, effectively improves the fire extinguishing effect, has a simple structure, is convenient and stable to control, can promote and strengthen the application of the unmanned aerial vehicle in the field of fire extinguishing and disaster relief, reduces the personnel investment in the process of fire extinguishing personnel, and reduces casualties caused in the process of fire extinguishing.
Description
Technical Field
The invention relates to the technical field of unmanned aerial vehicles, in particular to a fire fighting device based on an unmanned aerial vehicle.
Background
An unmanned aircraft, abbreviated as "drone", and abbreviated in english as "UAV", is an unmanned aircraft that is operated by a radio remote control device and a self-contained program control device, or is operated autonomously, either completely or intermittently, by an onboard computer. Drones tend to be more suitable for tasks that are too "fool, dirty, or dangerous" than are manned aircraft. Unmanned aerial vehicles can be classified into military and civil applications according to the application field. For military use, unmanned aerial vehicles divide into reconnaissance aircraft and target drone. In the civil aspect, the unmanned aerial vehicle + the industry application is really just needed by the unmanned aerial vehicle; at present, the unmanned aerial vehicle is applied to the fields of aerial photography, agriculture, plant protection, miniature self-timer, express transportation, disaster relief, wild animal observation, infectious disease monitoring, surveying and mapping, news reporting, power inspection, disaster relief, film and television shooting, romantic manufacturing and the like, the application of the unmanned aerial vehicle is greatly expanded, and developed countries actively expand industrial application and develop unmanned aerial vehicle technology.
Based on unmanned aerial vehicle's a great deal of advantage, utilize unmanned aerial vehicle to carry out the fixed point air-drop of goods and materials and also to obtain developing and utilizing gradually, however, be used for unmanned aerial vehicle to carry out the fire control unit function singleness of conflagration rescue at present, the fire control effect is unsatisfactory, is unfavorable for promoting the application of unmanned aerial vehicle in the fire extinguishing and disaster relief field.
Disclosure of Invention
In view of this, the invention aims to provide a fire fighting device based on an unmanned aerial vehicle, so that the unmanned aerial vehicle can perform fire fighting operation by sprinkling water and throwing fire extinguishing bombs simultaneously, the fire fighting effect is improved, the personnel investment in the fire fighting personnel process is reduced, and the casualties caused in the fire fighting process are reduced.
The invention solves the technical problems by the following technical means:
a fire fighting device based on an unmanned aerial vehicle comprises a water tank, a booster pump, a PLC control cabinet, a solenoid valve and a power supply box for supplying power to the booster pump, the PLC control cabinet and the solenoid valve, wherein the booster pump, the PLC control cabinet and the power supply box are all arranged on the outer top surface of the water tank, the solenoid valve and the booster pump are respectively electrically connected with the PLC control cabinet, a water inlet of the booster pump is communicated with a water outlet of the solenoid valve through a pipeline, a water inlet of the solenoid valve is communicated with the water tank through a pipeline, a water outlet of the booster pump is connected with a plurality of high-pressure spray heads through a pipeline, the plurality of high-pressure spray heads are arranged on the outer bottom surface of the water tank, a water filling port and a connecting seat are arranged on the outer top surface of the water tank, the connecting seat is positioned at four corners of the water tank, four fire extinguishing bomb throwing cylinders are obliquely arranged in the water tank, loading ports are arranged on four side surfaces of the water tank, four fire extinguishing bomb throwing cylinders are respectively connected with the four bomb loading ports, the other end is connected with four bullet throwing mouths respectively, is equipped with detachable and seals up the lid on four dress bullet mouths, and four bullet throwing mouths are located respectively to articulate through the torsional spring and have the lower cover of sealing up, and when the torsional spring was in free state, the lower cover of sealing up was covered and is closed on the bullet throwing mouth, seals up and installs the electromagnetic lock on covering, installs the iron plate that can with electromagnetic lock magnetism actuation on four bullet throwing mouths, and the electromagnetic lock is connected with power supply box and PLC switch board electricity respectively.
Furthermore, the middle part of the outer bottom surface of the water tank is provided with a supporting frame, the four projectile ports are located in the supporting frame, the height of the supporting frame is larger than that of the projectile ports and the high-pressure spray head, and reinforcing plates are arranged in the middle parts of the four outer side walls of the supporting frame respectively.
Furthermore, nine high-pressure spray heads are arranged, and the nine high-pressure spray heads are respectively arranged at four corners of the outer bottom surface of the water tank, the middle part of the outer bottom surface of the water tank and four corners of the inner side of the supporting frame.
Further, the height of the high-pressure spray head is greater than that of the projectile opening.
Further, the fire extinguishing bomb throwing tube is composed of a net-shaped outer layer, a waterproof middle layer and a buffering inner layer, the waterproof middle layer penetrates through the net-shaped outer layer and is in interference fit with the net-shaped outer layer, and the buffering inner layer is bonded in the waterproof middle layer.
Furthermore, the sealing upper cover is connected with the bullet loading port in a threaded connection mode.
Furthermore, a buffer spring is fixedly connected to the inner side surface of the sealed lower cover.
Further, the reticular outer layer is processed by stainless steelThe waterproof middle layer is made of aluminum alloy, the buffering inner layer is made of silica gel, a self-lubricating film layer is formed on the surface of the waterproof middle layer and contains carbon nano tubes, nano polytetrafluoroethylene and Al203The thickness of the self-lubricating film layer is 42-50 μm, and the static contact angle of the self-lubricating film layer is 159.7 degrees. The stainless steel mesh-shaped outer layer can play a supporting role, and the mesh-shaped outer layer can enable the waterproof middle layer to be in contact with water, so that the contact area of the fire extinguishing bomb throwing cylinder and the water is increased, and the temperature of the fire extinguishing bomb is reduced; the aluminum alloy waterproof intermediate layer has high supporting strength and light weight, can reduce the overall weight of the device, forms a self-lubricating film layer on the surface of the device, has strong hydrophobicity and weak oxidation corrosion, and can effectively prolong the service life of the device; silica gel material buffering, thermal-insulated effectual, wear-resisting durable, protection that can be good elasticity of putting out a fire can.
Further, the processing method of the aluminum alloy waterproof intermediate layer comprises the following steps:
s1, immersing the aluminum alloy waterproof intermediate layer into NaOH and Na with the molar ratio of 4:13PO4Soaking the aluminum alloy waterproof intermediate layer in the mixed solution for 5-10 min, washing the aluminum alloy waterproof intermediate layer with deionized water for 3-5 min, washing with an ethanol solution for 5-10 min, and drying for later use;
s2, immersing the aluminum alloy waterproof intermediate layer processed by the S1 in polishing solution at 100-120 ℃ for polishing for 10S, and then repeatedly washing the aluminum alloy waterproof intermediate layer by deionized water, wherein the polishing solution comprises 400-500 g/L of NaOH and 150-180 g/L of NaNO230-40 g/L NaF, 20-30 g/L Na3PO4；
S3, immersing the aluminum alloy waterproof intermediate layer processed by the S2 into the mixed acid electrolyte, performing high-pressure composite anodic oxidation at room temperature under the voltage of 120V for 1-2 h, repeatedly washing with deionized water, and drying to obtain the aluminum alloy waterproof intermediate layer with the surface coated with Al203The aluminum alloy waterproof middle layer of the polytetrafluoroethylene composite oxide film comprises 3mL/L phosphoric acid, 2g/L oxalic acid, 1g/L sodium tungstate, 1.5g/L propylene glycol monobutyl ether and 1.0-1.5 mL/L20% polytetrafluoroethylene emulsion;
s4 coating Al on the surface obtained in S3203Poly tetraImmersing an aluminum alloy waterproof intermediate layer of the vinyl fluoride composite oxide film into deionized water, then performing laser drilling by using a nanosecond laser, wherein the pulse width of the laser is 10ns, the wavelength is 1064nm, the power is 6-10W, the repetition frequency is 20kHz, the height of the aluminum alloy waterproof intermediate layer from the water surface is 15-30 mm, and after the processing is finished, the aluminum alloy waterproof intermediate layer is washed clean by the deionized water and dried for later use;
s5, adding carbon nanotubes into 10 volumes of nitric acid solution with the concentration of 2.6mol/L, converging for 24 hours at 40 ℃, cooling, performing centrifugal separation, washing with deionized water to be neutral, filtering, drying to obtain purified carbon nanotubes, adding 10 volumes of concentrated nitric acid and 30 volumes of concentrated sulfuric acid into the purified carbon nanotubes in sequence, performing ultrasonic dispersion for 5 hours, performing centrifugal separation, washing with deionized water to be neutral, and drying to obtain modified carbon nanotubes; the surface of the modified carbon nano tube is provided with carboxyl and hydroxyl groups, so that the carbon nano tube and Al are mixed203And the interaction between the polytetrafluoroethylene is enhanced, the dissociation of acid radical ions on the surface of the carbon nano tube enhances the mutual repulsion between the carbon nano tubes, the mutual winding degree is obviously weakened, and the dispersion performance of the carbon tubes is obviously improved, so that the carbon tube suspension with uniform dispersion and stability is prepared, the deposition of the carbon nano tubes is more uniform, and the filling is more compact and uniform.
S6, filling the modified carbon nano tubes into the micropores of the aluminum alloy waterproof middle layer obtained in the S4 in a physical vapor deposition method, compacting, performing heat treatment at 320-330 ℃ for 1-3 hours, and naturally cooling to room temperature after the heat treatment is completed.
Forming Al on the surface of the aluminum alloy waterproof intermediate layer by anodic oxidation203The/polytetrafluoroethylene composite oxide film layer has a self-lubricating function under the action of the nano polytetrafluoroethylene, and the film layer is uniform and compact, strong in corrosion resistance, strong in modern hardness, small in friction coefficient and good in waterproof effect; al prepared on surface of aluminum alloy waterproof intermediate layer203The polytetrafluoroethylene composite oxide film layer is further punched and filled with modified carbon nano tubes, the cylindrical stone black layers of the carbon nano tubes are easy to slide or rotate and have lubricating performance similar to that of graphite, and the modified carbon nano tubes are prepared by the following stepsPunching carbon nanotube and filling Al203The polytetrafluoroethylene composite oxide film can further reduce the friction coefficient of the surface of the film and improve the mechanical property and the waterproof property of the film.
Further, the oxidation voltage in S3 is linearly adjusted to a preset value of 120V within 30S and is kept until the experiment is finished, and the peak current density is 4.0-6.0A/dm2。
The invention has the beneficial effects that:
1. the fire extinguishing device can perform fire extinguishing operation by sprinkling water and throwing fire extinguishing bombs simultaneously, effectively improves the fire extinguishing effect, has a simple structure, is convenient and stable to control, can promote and strengthen the application of the unmanned aerial vehicle in the field of fire extinguishing and disaster relief, reduces the personnel investment in the process of fire extinguishing personnel, and reduces casualties caused in the process of fire extinguishing;
2. the invention forms Al on the surface of the aluminum alloy waterproof intermediate layer by anodic oxidation203The/polytetrafluoroethylene composite oxide film layer has a self-lubricating function under the action of the nano polytetrafluoroethylene, and the film layer is uniform and compact, strong in corrosion resistance, strong in modern hardness, small in friction coefficient and good in waterproof effect; al prepared on surface of aluminum alloy waterproof intermediate layer203The polytetrafluoroethylene composite oxide film layer is further punched and filled with modified carbon nanotubes, cylindrical stone black layers of the carbon nanotubes are easy to slide or rotate and have lubricating performance similar to graphite, and the carbon nanotubes are punched and filled into Al203The polytetrafluoroethylene composite oxide film can further reduce the friction coefficient of the surface of the film and improve the mechanical property and the waterproof property of the film.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a bottom view of the present invention;
FIG. 4 is a schematic view of the construction of the grenade throwing barrel of the present invention;
FIG. 5 is a control schematic of the present invention;
wherein, water tank 1, booster pump 2, PLC switch board 3, solenoid valve 4, power supply box 5, high pressure nozzle 6, filler 7, connecting seat 8, fire extinguishing bomb throwing section of thick bamboo 9, netted outer 91, waterproof intermediate level 92, buffering inlayer 93, loading mouth 10, throwing mouth 11, seal up and deposit upper cover 12, seal up and deposit lower cover 13, electromagnetic lock 14, iron plate 15, carriage 16, buffer spring 17, reinforcing plate 18.
Detailed Description
The invention will be described in detail below with reference to the following drawings:
example one
As shown in fig. 1-5, a fire fighting device based on unmanned aerial vehicle comprises a water tank 1, a booster pump 2, a PLC control cabinet 3, a solenoid valve 4 and a power box 5 for supplying power to the booster pump 2, the PLC control cabinet 3 and the solenoid valve 4, wherein the booster pump 2, the PLC control cabinet 3 and the power box 5 are all installed on the outer top surface of the water tank 1, the solenoid valve 4 and the booster pump 2 are respectively electrically connected with the PLC control cabinet 3, a water inlet of the booster pump 2 is communicated with a water outlet of the solenoid valve 4 through a pipeline, a water inlet of the solenoid valve 4 is communicated with the water tank 1 through a pipeline, a water outlet of the booster pump 2 is connected with a plurality of high-pressure nozzles 6 through a pipeline, the plurality of high-pressure nozzles 6 are installed on the outer bottom surface of the water tank 1, a water inlet 7 and a connecting seat 8 are arranged on the outer top surface of the water tank 1, the connecting seat 8 is located at four corners of the water tank 1, four fire extinguishing bomb throwing cylinders 9 are obliquely arranged in the water tank 1, and bomb loading ports 10 are arranged on four side surfaces of the water tank 1, the bottom surface of water tank 1 is provided with four bullet throwing mouths 11, the one end of four fire extinguishing bomb throwing barrels 9 is connected with four bullet loading mouths 10 respectively, the other end is connected with four bullet throwing mouths 11 respectively, be equipped with detachable sealed upper cover 12 on four bullet loading mouths 10, four bullet throwing mouths 11 locate respectively that to have sealed lower cover 13 through the torsional spring is articulated, when the torsional spring is in free state, sealed lower cover 13 lid closed is on bullet throwing mouth 11, install electromagnetic lock 14 on sealed lower cover 13, install the iron plate 15 that can with 14 magnetism actuation of electromagnetic lock on four bullet throwing mouths 11, electromagnetic lock 14 is connected with power supply box 5 and 3 electricity of PLC switch board respectively.
When watering, open through 3 control solenoid valve 4 of PLC switch board and booster pump 2, the water of storing in the water tank 1 flows into booster pump 2 through solenoid valve 4, and the water after the 2 pressure boost of booster pump is sprayed by 2 delivery ports input high pressure nozzle 6 of booster pump, and the water in the water tank 1 is supplemented through filler 7.
When the fire extinguishing bomb is thrown, the PLC control cabinet 3 controls the power supply circuit of the electromagnetic lock 14 to be disconnected, so that the electromagnetic lock 14 loses the magnetic attraction force on the iron block 15, the sealed lower cover 13 is extruded to be opened under the action of the gravity of the fire extinguishing bomb, and the fire extinguishing bomb is thrown out along a bomb throwing port; after the fire extinguishing bomb is thrown out, the sealed lower cover 13 is restored to be covered on the bomb throwing port 11 under the action of the torsion spring, meanwhile, the PLC control cabinet 3 controls the power supply circuit of the electromagnetic lock 14 to be switched on, so that the electromagnetic lock 14 generates magnetic attraction force and is attracted with the iron block 15 into a whole, and the fire extinguishing bomb is replenished through the bomb loading port 10.
The middle part of the outer bottom surface of the water tank 1 is provided with a supporting frame 16, the four projectile ports 11 are positioned in the supporting frame 16, the height of the supporting frame 16 is greater than that of the projectile ports 11 and the high-pressure spray head 6, and the middle parts of the four outer side walls of the supporting frame 16 are respectively provided with a reinforcing plate 18. The design of the supporting frame 16 can facilitate the placement of the fire fighting device on the ground and prevent the projectile port 11 and the high-pressure nozzle 6 from directly contacting the ground; the design of the reinforcing plate 18 can improve the strength of the supporting frame 16 and better protect the high-pressure nozzle 6 and the projectile port 11.
Nine high-pressure spray heads 6 are arranged, and the nine high-pressure spray heads 6 are respectively arranged at four corners of the outer bottom surface of the water tank 1, the middle part of the outer bottom surface of the water tank 1 and four corners of the inner side of the supporting frame 16. Through nine high pressure nozzle 6 that so distribute, can make watering area bigger, the watering effect is more even.
The height of the high-pressure nozzle 6 is greater than that of the projectile port 11. The high-pressure nozzle 6 can be prevented from splashing water onto the bullet throwing port 11 during working, and the normal work of the electromagnetic lock 14 is ensured.
The fire extinguishing bomb throwing tube 9 is composed of a net-shaped outer layer 91, a waterproof middle layer 92 and a buffering inner layer 93, the waterproof middle layer 92 penetrates through the net-shaped outer layer 91 and is in interference fit with the net-shaped outer layer 91, and the buffering inner layer 93 is bonded in the waterproof middle layer 92. The mesh-shaped outer layer 91 plays a role of supporting, can increase the contact area with water and reduce the temperature of the fire extinguishing bomb; the waterproof middle layer 92 can prevent the fire extinguishing bomb throwing tube 9 from being soaked, and the quality state of the fire extinguishing bomb is guaranteed; the cushioning inner layer 93 reduces the impact of the fire extinguishing bomb with the bomb barrel 9 during transport.
The sealing upper cover 12 is connected with the loading port 10 in a threaded connection mode. The threaded connection is simple and convenient to operate, and the fire extinguishing bomb is convenient to mount.
A buffer spring 17 is fixedly connected to the inner side surface of the sealing lower cover 13. The buffer spring 17 can play a role in buffering in the process of loading the fire extinguishing bomb, so that the fire extinguishing bomb is prevented from directly colliding with the sealed lower cover 13.
The outer netted layer 91 is made of stainless steel, the middle waterproof layer 92 is made of aluminum alloy, the inner buffering layer 93 is made of silica gel, and the surface of the middle waterproof layer 92 is provided with a self-lubricating film layer containing carbon nanotubes, nano polytetrafluoroethylene and Al203The thickness of the self-lubricating film layer is 42-50 μm, and the static contact angle of the self-lubricating film layer is 159.7 degrees. The stainless steel mesh outer layer 91 has high supporting strength, can stably support and protect the waterproof middle layer 92, and reduces the stress effect of the waterproof middle layer; the waterproof intermediate layer 92 made of the aluminum alloy is high in supporting strength and light in weight, the overall weight of the device can be reduced, a self-lubricating film layer is formed on the surface of the waterproof intermediate layer, the hydrophobicity is strong, the oxidation corrosion is weak, and the service life of the waterproof intermediate layer can be effectively prolonged; silica gel material buffering, thermal-insulated effectual, wear-resisting durable, protection that can be good elasticity of putting out a fire can.
Example two
On the basis of the first embodiment, the embodiment provides a processing method of an aluminum alloy waterproof intermediate layer, which comprises the following steps:
immersing the aluminum alloy waterproof middle layer into NaOH and Na with a molar ratio of 4:13PO4Soaking the aluminum alloy waterproof intermediate layer in the mixed solution for 5min, washing the aluminum alloy waterproof intermediate layer with deionized water for 3min, washing with an ethanol solution for 5-10 min, and drying for later use; immersing the treated aluminum alloy waterproof intermediate layer into polishing solution with the temperature of 100 ℃ for polishing for 10s, and then repeatedly washing the aluminum alloy waterproof intermediate layer by using deionized water, wherein the polishing solution comprises 400g/L of NaOH and 150g/L of NaNO230g/L NaF, 20g/L Na3PO4(ii) a Immersing the treated aluminum alloy waterproof intermediate layer into mixed acid electrolyte, and linearly adjusting the oxidation voltage to a preset value of 120V within 30s and the peak currentThe density is 4.0A/dm2, then the composite anode oxidation is carried out for 1h at room temperature and high pressure under the voltage of 120V, the deionized water is used for repeatedly washing and drying, and Al coated on the surface is obtained203The aluminum alloy waterproof middle layer of the polytetrafluoroethylene composite oxide film comprises 3mL/L phosphoric acid, 2g/L oxalic acid, 1g/L sodium tungstate, 1.5g/L propylene glycol monobutyl ether and 1.0 mL/L20% polytetrafluoroethylene emulsion; coating the obtained surface with Al203Soaking the aluminum alloy waterproof intermediate layer of the polytetrafluoroethylene composite oxide film into deionized water, then performing laser drilling by using a nanosecond laser, wherein the pulse width of the laser is 10ns, the wavelength is 1064nm, the power is 6W, the repetition frequency is 20kHz, the height of the aluminum alloy waterproof intermediate layer from the water surface is 15mm, and after the processing is finished, the aluminum alloy waterproof intermediate layer is washed clean by the deionized water and dried for later use; adding a carbon nano tube into 10 volumes of nitric acid solution with the concentration of 2.6mol/L, converging for 24 hours at 40 ℃, cooling, then carrying out centrifugal separation, washing with deionized water to be neutral, filtering and drying to obtain a purified carbon nano tube, then taking the purified carbon nano tube, sequentially adding 10 volumes of concentrated nitric acid and 30 volumes of concentrated sulfuric acid, carrying out ultrasonic dispersion for 5 hours, then carrying out centrifugal separation, washing with deionized water to be neutral, and drying to obtain the modified carbon nano tube. Filling the modified carbon nano tube into micropores of the aluminum alloy waterproof intermediate layer in a physical vapor deposition method, compacting, performing heat treatment at 320 ℃ for 1h, and naturally cooling to room temperature after the heat treatment is completed.
EXAMPLE III
On the basis of the first embodiment, the embodiment provides a processing method of an aluminum alloy waterproof intermediate layer, which comprises the following steps:
immersing the aluminum alloy waterproof middle layer into NaOH and Na with a molar ratio of 4:13PO4Soaking in the mixed solution for 7min, washing the aluminum alloy waterproof intermediate layer with deionized water for 4min, washing with ethanol solution for 8min, and drying; immersing the treated aluminum alloy waterproof intermediate layer into polishing solution with the temperature of 110 ℃ for polishing for 10s, and then repeatedly washing the aluminum alloy waterproof intermediate layer by using deionized water, wherein the polishing solution comprises 450g/L of NaOH and 160g/L of NaNO237g/L NaF, 22g/L Na3PO4(ii) a Immersing the treated aluminum alloy waterproof intermediate layer into mixed acid electrolyte, and linearly adjusting the oxidation voltage to a preset value of 120V within 30s, wherein the peak current density is 5.0A/dm2Then carrying out high-pressure composite anodic oxidation at room temperature under the voltage of 120V for 1.5h, repeatedly washing with deionized water, and drying to obtain the product with the surface coated with Al203The aluminum alloy waterproof middle layer of the polytetrafluoroethylene composite oxide film comprises 3mL/L phosphoric acid, 2g/L oxalic acid, 1g/L sodium tungstate, 1.5g/L propylene glycol monobutyl ether and 1.3 mL/L20% polytetrafluoroethylene emulsion; coating the obtained surface with Al203Soaking the aluminum alloy waterproof intermediate layer of the polytetrafluoroethylene composite oxide film into deionized water, then performing laser drilling by using a nanosecond laser, wherein the pulse width of the laser is 10ns, the wavelength is 1064nm, the power is 8W, the repetition frequency is 20kHz, the height of the aluminum alloy waterproof intermediate layer from the water surface is 20mm, and after the processing is finished, the aluminum alloy waterproof intermediate layer is washed clean by the deionized water and dried for later use; adding a carbon nano tube into 10 volumes of nitric acid solution with the concentration of 2.6mol/L, converging for 24 hours at 40 ℃, cooling, then carrying out centrifugal separation, washing with deionized water to be neutral, filtering and drying to obtain a purified carbon nano tube, then taking the purified carbon nano tube, sequentially adding 10 volumes of concentrated nitric acid and 30 volumes of concentrated sulfuric acid, carrying out ultrasonic dispersion for 5 hours, then carrying out centrifugal separation, washing with deionized water to be neutral, and drying to obtain the modified carbon nano tube. Filling the modified carbon nano tube into micropores of the aluminum alloy waterproof intermediate layer in a physical vapor deposition method, compacting, performing heat treatment at 325 ℃ for 2 hours, and naturally cooling to room temperature after the heat treatment is completed.
Example four
On the basis of the first embodiment, the embodiment provides a processing method of an aluminum alloy waterproof intermediate layer, which comprises the following steps:
immersing the aluminum alloy waterproof middle layer into NaOH and Na with a molar ratio of 4:13PO4Soaking in the mixed solution for 10min, washing the aluminum alloy waterproof intermediate layer with deionized water for 5min, washing with ethanol solution for 10min, and drying; immersing the treated aluminum alloy waterproof intermediate layer into polishing solution at 120 ℃ for polishing for 10s, and then usingRepeatedly washing the aluminum alloy waterproof intermediate layer by using ionized water, wherein the polishing solution comprises 500g/L of NaOH and 180g/L of NaNO240g/L NaF, 30g/L Na3PO4(ii) a Immersing the treated aluminum alloy waterproof intermediate layer into mixed acid electrolyte, and linearly adjusting the oxidation voltage to a preset value of 120V within 30s, wherein the peak current density is 6.0A/dm2Then carrying out room-temperature high-pressure composite anodic oxidation for 2h at the voltage of 120V, repeatedly washing with deionized water, and drying to obtain the product with the surface coated with Al203The aluminum alloy waterproof middle layer of the polytetrafluoroethylene composite oxide film comprises 3mL/L phosphoric acid, 2g/L oxalic acid, 1g/L sodium tungstate, 1.5g/L propylene glycol monobutyl ether and 1.5 mL/L20% polytetrafluoroethylene emulsion; coating the obtained surface with Al203Soaking the aluminum alloy waterproof intermediate layer of the polytetrafluoroethylene composite oxide film into deionized water, then performing laser drilling by using a nanosecond laser, wherein the pulse width of the laser is 10ns, the wavelength is 1064nm, the power is 10W, the repetition frequency is 20kHz, the height of the aluminum alloy waterproof intermediate layer from the water surface is 30mm, and after the processing is finished, the aluminum alloy waterproof intermediate layer is washed clean by the deionized water and dried for later use; adding a carbon nano tube into 10 volumes of nitric acid solution with the concentration of 2.6mol/L, converging for 24 hours at 40 ℃, cooling, then carrying out centrifugal separation, washing with deionized water to be neutral, filtering and drying to obtain a purified carbon nano tube, then taking the purified carbon nano tube, sequentially adding 10 volumes of concentrated nitric acid and 30 volumes of concentrated sulfuric acid, carrying out ultrasonic dispersion for 5 hours, then carrying out centrifugal separation, washing with deionized water to be neutral, and drying to obtain the modified carbon nano tube. Filling the modified carbon nano tube into micropores of the aluminum alloy waterproof intermediate layer in a physical vapor deposition method, compacting, performing heat treatment at 330 ℃ for 3 hours, and naturally cooling to room temperature after the heat treatment is completed.
The aluminum alloy waterproof intermediate layers with self-lubricating film layers processed in the second to fourth examples were tested for film thickness (μm), film Hardness (HV) and film abrasion loss per unit time (mg/min), charm parallel test was performed 3 times to obtain an average value, and a group of common aluminum alloy waterproof intermediate layers without self-lubricating film layers on the surfaces thereof were used as experimental control groups, and the tests are as follows:
as can be seen from the analysis of the data in the above table, the Al produced on the surface of the waterproof intermediate layer of the aluminum alloy in the second to fourth examples203After the/polytetrafluoroethylene composite oxide film layer is further subjected to punching and carbon nanotube filling treatment, the hardness of the film layer is over 1000HV, the abrasion loss of the film layer in unit time is lower than 0.25mg/min, and the friction coefficient is lower than 0.1. Forming Al on the surface of the aluminum alloy waterproof intermediate layer by anodic oxidation203The/polytetrafluoroethylene composite oxide film layer has a self-lubricating function under the action of the nano polytetrafluoroethylene, and the film layer is uniform and compact, strong in corrosion resistance, strong in modern hardness, small in friction coefficient and good in waterproof effect; al prepared on surface of aluminum alloy waterproof intermediate layer203The polytetrafluoroethylene composite oxide film layer is further punched and filled with modified carbon nanotubes, the cylindrical graphite layers of the carbon nanotubes are easy to slide or rotate, the graphite-like lubricating property is achieved, and the carbon nanotubes are filled into Al203The polytetrafluoroethylene composite oxide film can further reduce the surface friction coefficient of the film and improve the mechanical property and the waterproof property of the film.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (10)
1. A fire fighting device based on an unmanned aerial vehicle is characterized by comprising a water tank, a booster pump, a PLC control cabinet, a solenoid valve and a power box for supplying power to the booster pump, the PLC control cabinet and the solenoid valve, wherein the booster pump, the PLC control cabinet and the power box are all arranged on the outer top surface of the water tank, the solenoid valve and the booster pump are respectively electrically connected with the PLC control cabinet, a water inlet of the booster pump is communicated with a water outlet of the solenoid valve through a pipeline, a water inlet of the solenoid valve is communicated with the water tank through a pipeline, a water outlet of the booster pump is connected with a plurality of high-pressure nozzles through a pipeline, the high-pressure nozzles are arranged on the outer bottom surface of the water tank, a water inlet and a connecting seat are arranged on the outer top surface of the water tank, the connecting seat is positioned at four corners of the water tank, four fire extinguishing bomb throwing cylinders are obliquely arranged in the water tank, and bomb loading ports are arranged on four side surfaces of the water tank, the bottom surface of water tank is provided with four throwing mouths, four the one end of a fire extinguishing bomb throwing section of thick bamboo is connected with four loading mouths respectively, and the other end is connected with four throwing mouths respectively, four be equipped with detachable on the loading mouth and seal the upper cover, four the throwing mouth locates to articulate through the torsional spring respectively and has the lower cover of sealing, and when the torsional spring was in free state, the lower cover of sealing is closed on throwing the mouth, and the back is thrown out to the fire extinguishing bomb, and the effect of the torsional spring of sealing the lower cover down resumes normal position and covers the closed on throwing the mouth, cover under sealing and install electromagnetic lock, four install the iron plate that can with electromagnetic lock magnetism actuation on the throwing mouth, electromagnetic lock is connected with power supply box and PLC switch board electricity respectively.
2. The unmanned aerial vehicle-based fire fighting device of claim 1, wherein a support frame is arranged in the middle of the outer bottom surface of the water tank, four projectile ports are located in the support frame, the height of the support frame is greater than that of the projectile ports and the high-pressure sprayer, and reinforcing plates are respectively arranged in the middle of four outer side walls of the support frame.
3. The unmanned aerial vehicle-based fire fighting device of claim 2, wherein the number of the high pressure nozzles is nine, and the nine high pressure nozzles are respectively installed at four corners of the outer bottom surface of the water tank, the middle part of the outer bottom surface of the water tank, and four corners of the inner side of the supporting frame.
4. A fire fighting unit based on unmanned aerial vehicle as defined in claim 3, wherein the height of the high pressure nozzle is greater than the height of the projectile opening.
5. The fire fighting device based on the unmanned aerial vehicle as claimed in any one of claims 1 to 4, wherein the fire extinguishing bomb throwing barrel is composed of a net-shaped outer layer, a waterproof middle layer and a buffering inner layer, the waterproof middle layer penetrates through the net-shaped outer layer and is in interference fit with the net-shaped outer layer, and the buffering inner layer is bonded in the waterproof middle layer.
6. The unmanned aerial vehicle-based fire fighting device of claim 5, wherein a buffer spring is fixedly connected to the inner side surface of the sealing lower cover.
7. The unmanned aerial vehicle-based fire fighting device of claim 6, wherein the containment upper cover is connected with the charging port by a threaded connection.
8. The fire fighting device based on unmanned aerial vehicle of claim 7, wherein the mesh-shaped outer layer is made of stainless steel, the waterproof middle layer is made of aluminum alloy, the buffering inner layer is made of silica gel, a self-lubricating film layer is formed on the surface of the waterproof middle layer, and the self-lubricating film layer contains carbon nanotubes, nano polytetrafluoroethylene and Al203The thickness of the self-lubricating film layer is 42-50 mu m, and the static contact angle of the self-lubricating film layer is 159.7 degrees.
9. The unmanned aerial vehicle-based fire fighting device of claim 8, wherein the aluminum alloy waterproof intermediate layer is processed by the following method:
s1, immersing the aluminum alloy waterproof intermediate layer into NaOH and Na with the molar ratio of 4:13PO4Soaking the aluminum alloy waterproof intermediate layer in the mixed solution for 5-10 min, washing the aluminum alloy waterproof intermediate layer with deionized water for 3-5 min, washing with an ethanol solution for 5-10 min, and drying for later use;
s2, immersing the aluminum alloy waterproof intermediate layer processed by the S1 in polishing solution at 100-120 ℃ for polishing for 10S, and then repeatedly washing the aluminum alloy waterproof intermediate layer by deionized water, wherein the polishing solution comprises 400-500 g/L of NaOH and 150-180 g/L of NaNO230-40 g/L NaF, 20-30 g/L Na3PO4；
S3, immersing the aluminum alloy waterproof intermediate layer processed by the S2 into the mixed acid electrolyte, performing high-pressure composite anodic oxidation at room temperature under the voltage of 120V for 1-2 h, repeatedly washing with deionized water, and drying to obtain the aluminum alloy waterproof intermediate layer with the surface coated with Al203The aluminum alloy waterproof middle layer of the polytetrafluoroethylene composite oxide film comprises 3mL/L phosphoric acid, 2g/L oxalic acid, 1g/L sodium tungstate, 1.5g/L propylene glycol monobutyl ether and 1.0-1.5 mL/L20% polytetrafluoroethylene emulsion;
s4 coating Al on the surface obtained in S3203Soaking the aluminum alloy waterproof intermediate layer of the polytetrafluoroethylene composite oxide film into deionized water, then performing laser drilling by using a nanosecond laser, wherein the pulse width of the laser is 10ns, the wavelength is 1064nm, the power is 6-10W, the repetition frequency is 20kHz, the height of the aluminum alloy waterproof intermediate layer from the water surface is 15-30 mm, and after the processing is finished, the aluminum alloy waterproof intermediate layer is washed clean by the deionized water and dried for later use;
s5, adding carbon nanotubes into 10 volumes of nitric acid solution with the concentration of 2.6mol/L, converging for 24 hours at 40 ℃, cooling, performing centrifugal separation, washing with deionized water to be neutral, filtering, drying to obtain purified carbon nanotubes, adding 10 volumes of concentrated nitric acid and 30 volumes of concentrated sulfuric acid into the purified carbon nanotubes in sequence, performing ultrasonic dispersion for 5 hours, performing centrifugal separation, washing with deionized water to be neutral, and drying to obtain modified carbon nanotubes;
s6, filling the modified carbon nano tubes into the micropores of the aluminum alloy waterproof middle layer obtained in the S4 in a physical vapor deposition method, compacting, performing heat treatment at 320-330 ℃ for 1-3 hours, and naturally cooling to room temperature after the heat treatment is completed.
10. The unmanned aerial vehicle-based fire fighting device of claim 9, wherein the oxidizing voltage described in S3 is linearly adjusted to a preset value of 120V within 30S and held until the end of experiment with a peak current density of 4.0-6.0A/dm.
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