259results about How to "Fire extinguishing speed" patented technology

The invention provides a low-fluorine environment-friendly type aqueous film-forming foam fire extinguishing agent and a preparation method thereof. The fire extinguishing agent is composed of the following components in percentage by weight: 1%-2% of a fluorocarbon surfactant, 10%-40% of a hydrocarbon surfactant, 1%-10% of a silicon-containing surfactant, 20%-30% of an organic solvent, 0.1%-1% of a foam stabilizer, 2%-8% of a burning-resisting agent, 0.1%-1% of a preservative and a proper amount of water. The preparation method of the fire extinguishing agent comprises the following steps: mixing and agitating the fluorocarbon surfactant with the organic solvent to form a component A; mixing the hydrocarbon surfactant with the silicon-containing surfactant and water to form a component B; uniformly mixing the burning-resisting agent, the foam stabilizer and the preservative to form a component C; adding the component B into the component A and slowly adding the component C into the component A; and agitating uniformly. According to the low-fluorine environment-friendly type aqueous film-forming foam fire extinguishing agent, the three surfactants are compounded so that the use amount of the fluorocarbon surfactant is reduced to be less than 2% and the low surface tension is still kept; and the cost of the aqueous film-forming foam fire extinguishing agent can be reduced and the damages to the environment caused by fluorine compounds can be reduced.

The invention discloses an automatic electric switch cabinet fire extinguishing system and a fire recognition method, wherein the automatic electric switch cabinet fire extinguishing system comprises a fire extinguishing agent nozzle which is arranged in an electric switch cabinet; the fire extinguishing agent nozzle is connected with a storage device in which a non-conducting fire extinguishing agent is stored through a pipeline; an electromagnetic valve which is controlled by a central controller is arranged on a pipeline; a photoelectric sensor is also arranged in the electric switch cabinet; and the photoelectric sensor outputs a detection signal to the central controller and then the central controller judges whether to open the electromagnetic valve. The automatic electric switch cabinet fire extinguishing system is capable of responding sudden electric fire and reducing the loss caused thereby. Fire extinguishing agents such as heptafluoropropane and superfine dry powder are used and non-conducting, so that secondary danger caused by conduction of fire extinguishing agents does not occur; and the fire extinguishing agents are environmental-friendly, so that the damage to the environment caused by conduction of fire extinguishing agents also does not occur. The photoelectric sensor is used, so that the fire such as electric arc and the like in the switch cabinet can be rapidly and correctly detected.

The invention discloses an anti-reburning environment-friendly power transmission line forest fire extinguishing agent. The anti-reburning environment-friendly power transmission line forest fire extinguishing agent comprises the following components in parts by weight: 5-20 parts of ammonium carbonate, 10-45 parts of ammonium polyphosphate, 10-30 parts of sodium silicate, 1-10 parts of a foaming agent, 0.5-5 parts of polyethylene glycol, 1-5 parts of a thickening agent, 4-10 parts of a composite anti-freezing agent and 55-80 parts of water, wherein the foaming agent is selected from one of alkylethoxylate carboxylate, an imidazoline amphoteric surfactant and a biological surfactant; the composite anti-freezing agent is a compound which is prepared by compounding inorganic salt and polyhydric alcohol according to a mole ratio of (1 to 3)-(1 to 9). All the raw materials of the anti-reburning environment-friendly power transmission line forest fire extinguishing agent are environment-friendly materials, so that the fire extinguishing agent is free of fluorine compound, toxicity, smell and pollution; a fire retardant is added into the fire extinguishing agent, so that the fire extinguishing agent is capable of effectively preventing the fire from spreading and is high in fire extinguishing efficiency; the environment-friendly surfactant serves as the foaming agent, so that the fire extinguishing agent is high in foaming performance and is capable of effectively isolating contact between the combustion material and the air and accelerating the fire extinguishing speed; the anti-freezing agent is compounded by the inorganic salt and polyhydric alcohol, so that the freezing point of the fire extinguishing agent is reduced to be -30 DEG C.

The invention discloses a novel method for preparing a cold-resistant and seawater-resistant aqueous filmforming foam extinguishing agent. According to the formula, the cold-resistant and seawater-resistant aqueous filmforming foam extinguishing agent consists of the following raw materials in part by weight: 300 to 400 parts of composite burn resistance agent, 6 to 10 parts of sodium benzoate, 50 to 100 parts of urea, 5 to 9 parts of xanthan gum, 200 to 400 parts of amphoteric hydrocarbon surfactant, 20 to 40 parts of alkyl polyglucoside (APG), 80 to 200 parts of glycol, 30 to 60 parts of butyl cellosolve, 10 to 30 parts of FC115710, 20 to 60 parts of FC120320, 20 to 40 parts of low-molecular-weight fluorinated surfactant, and 20 to 60 parts of buffering agent. The product prepared by the method is low in cost, and suitable for fresh water and seawater; and after the agent and the seawater or the fresh water are mixed in a use mixing ratio, the foam property and the extinguishment performance of the agent change slightly, the expansion rate of foam is high, 25 percent liquid drainage time is long, the foams are stable, the extinguishment speed is high and the burn resistance performance is good.

The invention relates to a fire detection, prevention and control system of an electronic control cabinet. The fire detection, prevention and control system comprises a data acquisition device, a fire extinguishing device and a main control device which are arranged in an electronic control cabinet body, wherein the data acquisition device is used for acquiring detection data of each detection node in the electronic control cabinet in real time, and transmitting the detection data to the main control device; the fire extinguishing device is used for accepting a control signal sent by the main control device, and carrying out fire control and processing on an area with a fire early warning; a fire extinguishing control module is used for sending a control signal to the fire extinguishing device according to the instruction of a CPU (central processing unit) core module. The invention further discloses a control method based on the system. The control method comprises the following steps: transmitting the CO and smoke concentration acquired in real time to the CPU core module; processing by a pre-detection data filter model to obtain a characteristic extraction value; if fire early warning standards are met, sending an early warning or starting the fire extinguishing device. The fire detection, prevention and control system and the control method disclosed by the invention are capable of performing real-time detection on a small space such as the electronic control cabinet, eliminating fire in the bud, and reducing the false alarm rate of fire early warning.

The compound colloid for treating coal bed fire consists of water, aggregate and gel forming agent. The aggregate is fly ash, loess, sand soil or rock powder; and the gel forming agent is sodium polyacrylate. When the compound colloid is used, water and the aggregate are first mixed to form slurry, and sodium polyacrylate is then added. Into the compound colloid, aluminum sulfate and ammonium bicarbonate may be added to foam the gel and to decrease the slurry consumption, and some suspending agent may be added to avoid settling of the aggregate during pipelining. The fire extinguishing colloid for coal bed has low cost, simple operation and low consumption.

The invention discloses a high pressure and water mist fire foam which is composed of the raw materials, comprising foaming agent, compound fluorochemical surfactant, penetrant, antifreeze, stabilizer, corrosion inhibitor and water. The weight percentages are as follows: 30-40 percent of foaming agent, 5-10 percent of compound fluorochemical surfactant, 1-5 percent of penetrant, 10-15 percent of antifreeze, 5-8 percent of stabilizer, 0.1-1 percent of corrosion inhibitor and the rest proportion of water. The high pressure and water mist fire foam is a novel multifunctional extinguishing agent with high efficiency and water saving performances and can be equipped on different fire-extinguishing systems. In the water mist praying system, the high pressure and water mist fire foam can spray micro-droplets up to 5-10mm and has high fire-extinguishing efficiency; in the foam fire-extinguishing system, the high pressure and water mist fire foam can produce stable and sustainable foams and is characterized by great performance of separating water and fluidity, and rapid fire-extinguishing speed. The high pressure and water mist fire foam can extinguish both class B fire and class A fire.

A fire-extinguishing chemical for forest is proportionally prepared from potassium siliate, ammonium, citrate, the potassium salt and / or ammonium salt of sulfuric acid and phosphoric acid, poly-5-vinyl-1,2-dimethylpyridine-methylsulfate, carboxymethyl cellulose, and the mixture of cupper sulfate and ferrocene through ball grinding and granulating.

The invention discloses an annular fine water mist fire extinguishing cover system. The annular fine water mist fire extinguishing cover system comprises a fine water mist spraying mechanism; the fine water mist spraying mechanism includes a high-pressure water distributor and more than two annular water pipes; each annular water pipe is communicated with the high-pressure water distributor through more than high-pressure water distribution pipes; and each annular water pipe is respectively provided with more than two fine water mist nozzles. The annular fine water mist fire extinguishing cover system is fast in fire extinguishing speed and high in fire extinguishing efficiency, and cannot generate secondary pollution to surrounding environments. The annular fine water mist fire extinguishing cover system can be used for cooling exposed combustible gas or liquid pipes after fire extinguishing, overcomes the defects of low fire extinguishing efficiency and bad fire extinguishing agent waste in a traditional spraying dry powder fire extinguishing agent, and satisfies the purposes and the technical requirements of effectively extinguishing the oil tank fire.

The invention discloses a multifunctional fire extinguishing device which can synchronously eject double fire extinguishing media. The fire extinguishing device consists of driving power devices, fire extinguishing medium storage tank devices and an ejecting device. According to the fire extinguishing device, a manner that two kinds of fire extinguishing media are synchronously ejected, or a manner that one kind of the fire extinguishing media is ejected can be selected; the ejecting flow and the ejecting strength of double fire extinguishing media or single fire extinguishing medium can be synchronously controlled through valves; a dry-powder fire extinguishing agent medium can be ejected far by the power of ejecting a water-series extinguishing agent medium or foam extinguishing agent medium. The fire extinguishing device is simple and practical, has a powerful flexible fire extinguishing capability, and can be widely applied and equipped in various fire extinguishing systems or fire extinguishing equipment; the flow of the double-media multifunctional fire extinguishing device can be flexibly controlled, and complicated mixed fires can be effectively put out.

The invention discloses a fire extinguishing plant of an energy storage system, comprising a sprinkler device, a smoke drying device, a water retaining device, and a water drainage device, wherein, the sprinkler device is used for spraying running water at the ablaze battery module, the smoke drying device is used for discharging smoke on the fire point and drying the battery module when water spraying stops, and the water retaining device is arranged opposite to the sprinkler device for blocking the water sprayed from the sprinkler device to prevent the water from flowing around any region outside the ablaze battery module and allowing the water to enter the water drainage device to discharge. According to the invention, water is used for fire extinguishment and simultaneously smoke discharge is carried out, thus the speed of fire extinguishment is fast, the smoke is little, inflammable gases released from the battery can be rapidly removed by timely smoke discharge in the fire extinguishing process, the danger of gas suffocation is avoided, the explosion risk caused by accumulation of inflammable gases injected by the battery in the process of using gas for fire extinguishment is avoided, and the electric shock caused by chaotic water flow is effectively avoided by the water retaining device and the water drainage device.

The invention discloses a seawater-resistant insoluble aqueous film-forming foam extinguishing agent and a preparation method thereof. The extinguishing agent comprises the following components in parts by weight: 300-400 parts of deionized water, 6-10 parts of sodium benzoate, 20-80 parts of urea, 5-9 parts of xanthan gum, 100-400 parts of Cocamidopropyl betaine, 20-60 parts of APG, 80-200 parts of ethylene glycol, 20-60 parts of ethylene glycol monobutyl ether, 10-50 parts of F1157, 10-50 parts of F1203, 10-60 parts of F1460 and 20-60 parts of a buffer agent. The seawater-resistant insoluble aqueous film-forming foam extinguishing agent is used for being mixed with seawater for fire extinguishing and has the advantages of low viscosity, high fire-extinguishing speed, high expansion rate, stable property, long storage time and the like.

The invention discloses a cotton blending machine, and belongs to a technology of textile machinery. The technical point is that the cotton blending machine comprises a machine body; a cotton inlet cavity is formed in the front end of the machine body; cotton assorting pipes are arranged below the cotton inlet cavity; a water pipe is arranged above the cotton inlet cavity; a plurality of nozzles are arranged on the water pipe; movable blocks are arranged at the upper ends of the cotton assorting pipes and can close the cotton assorting pipes; the lower ends of the cotton assorting pipes are bent, and the cotton assorting pipes can rotate; a spike lattice is arranged in the machine body; a cotton stripping roller is arranged at the upper rear end of the spike lattice; a cotton cleaning beater is arranged at the rear of the cotton stripping roller; a cotton outlet pipe is arranged at the rear of the cotton cleaning beater; a bent pipe is arranged at the lower part of the cotton outlet pipe; and two magnetic layers are arranged on the inner wall of the bent pipe. The invention aims to provide a cotton blending machine which is safe and uniform in cotton blending.

The invention discloses a novel multifunctional fire protection coaxial nozzle device used for spraying two kinds of fire extinguishing media at the same time. The novel multifunctional fire protection coaxial nozzle device can selectively spray two kinds of fire extinguishing media at the same time or spray one kind of fire extinguishing media, the spraying flow and intensity of the two kinds of fire extinguishing media or one kind of fire extinguishing media are controlled through a valve at the same time, and spraying power of water extinguishing agent or foam extinguishing agent media enables dry powder fire extinguishing agent media to be sprayed by a longer distance. The novel multifunctional fire protection coaxial nozzle device is simple and practical, has high and flexible fire extinguishing capacity, and can be widely applied to and arranged into various fire extinguishing systems or fire extinguishing devices.

The invention relates to a spraying agent type automatic fire extinguishing device for a vehicle, which is suitable for an engine room of a minicar. The spraying agent type automatic fire extinguishing device comprises a cylinder body, a superfine dry powder spraying assembly and a spraying agent box assembly and is vertically or horizontally arranged in the engine room of the minicar through a hoop; the superfine dry powder spraying assembly is arranged as a nozzle assembly connected with an upper opening of the cylinder body during vertical installation; a lower cover is connected with the spraying agent box assembly and seals a lower opening of the cylinder body; a compound type superfine dry powder extinguishing agent with mean grain size less than or equal to 5 micrometers is filled into a cavity of the cylinder body; the nozzle assembly comprises a protecting hood, a taper pipe nozzle nipple, an aluminum film and a sealing gasket which are connected; the spraying agent box assembly comprises a spraying agent box body, a protective film and a nozzle; the side wall of the spraying agent box body is provided with a through hole and the protective film; the lower cover is provided with a through hole for guiding an electric igniter and is connected with a control circuit; the side wall of the cylinder body which is horizontally arranged is provided with the through hole, and the cylinder body is also used as the superfine dry powder spraying assembly. The spraying agent type automatic fire extinguishing device has multiple starting ways and extinguishing time less than 3 seconds, is suitable for various natural environments with the minicar and can stably work.

The invention relates to a wheeled combined jet fire extinguisher which is characterized in that a wheeled cart is taken as a carrier; a gas cylinder, a water tank / foam tank and a superfine dry power tank are arranged on the wheeled cart; the gas in the gas cylinder enters the water tank / the foam tank through an air relief valve and a gas pipeline; the prefixed liquid of water and foam in the water tank / the foam tank is pressed in the inlet of a jet device through a water pipeline; the superfine dry powder in the superfine dry powder tank enters the inlet of the jet device through a powderdischarge valve, a dry powder pipeline; and the water and the superfine dry powder are jet out simultaneously. According to the invention, the water and the dry powder are organically combined, thus achieving compatible properties and complementary advantages. The wheeled combined jet fire extinguisher has extremely fast speed of extinguishment, and extinguishes fire almost instantly within a certain range.

The invention relates to an environmental-friendly water-based fire extinguishing agent, which comprises: deionized water, an antiseptic agent, a metal antirust agent, a halogen-free fire retardant, a hydrocarbon surfactant, a high efficiency chelating agent, 2-5 parts of an osmotic agent and a high efficiency corrosion inhibitor. The preparation method of the water-based fire extinguishing agentconsists of the steps of: adding deionized water into a dispersing cylinder according to the weight part, then adding the antiseptic agent, the metal antirust agent, the halogen-free fire retardant and the hydrocarbon surfactant, and stirring the mixture uniformly till completely salvation of the mixture; then adding the high efficiency chelating agent, the osmotic agent and the high efficiency corrosion inhibitor, stirring them uniformly till semi-clarity, thus obtaining the finished product. Containing a halogen free fire retardant, the fire extinguishing agent of the invention can be biologically degraded 100%, thus having no pollution to surrounding equipment and space. Containing an osmotic agent, the fire extinguishing agent in the invention can penetrate articles in fire hazards ofclass A, and can penetrate into the inside of combustible articles, so that even if the fire is not completely put out due to a large fire, the part injected with the agent can effectively block a fire source and control the spreading speed of a fire. Therefore, the fire extinguishing agent provided in the invention has excellent flame resistance.

The invention relates to a low-temperature-resistant premixed foam fire-extinguishing agent and a preparation method thereof, and mainly solves the problem that fire-fighting chemicals cannot be used in a low-temperature environment after being mixed with water in the prior art. The problem is solved well through adopting the technical scheme that the low-temperature-resistant premixed foam fire-extinguishing agent and the preparation method thereof are adopted, and comprises the following components in percentage by mass: 10-20% of pour point depressant, 0.1-1.0% of film-forming agent, 0.5-2.0% of foaming agent, 0.05-0.2% of penetrating agent, 0.2-1.0% of foam-stabilizing agent, 0.1-0.5% of preservative, 2-5% of other additives and the balance deionized water. A fire extinguisher or a fire-extinguishing device can be directly filled with the low-temperature-resistant premixed foam fire-extinguishing agent in the low-temperature environment to extinguish fire.

The invention discloses a power transmission line forest fire extinguishing agent. According to the invention, 23wt% of potassium chloride, 52-65wt% of ammonium carbonate and 12-25wt% of disodium hydrogen phosphate chemical solid are sequentially and respectively dissolved in an appropriate amount of water, and thus a fire extinguishing fluid having the specific gravity of 1.1-1.2 can be obtained; the fire extinguishing fluid is stored in a sealed lightproof container. Before, the power transmission line forest fire is put out, the fire extinguishing fluid is diluted by using water in a ratio of 1:20 and then the diluted fire extinguishing fluid is filled in a water mist fire extinguisher; the fire extinguishing agent is sprayed to the scene of fire as the water mist to put out the fire. The power transmission line forest fire extinguishing agent is quick in fire extinguishing speed, high in fire resistance and high in fire extinguishing efficiency; a small amount of fire extinguishing agent is capable of effectively extinguishing the forest fire of a certain area and effectively preventing a transmission line from tripping due to the forest fire.

The invention discloses an annular water mist fire extinguishing system of an oil storage tank. The annular water mist fire extinguishing system is characterized in that a metal bracket floating on the oil surface is arranged inside the oil storage tank; a water mist spraying device is arranged on the metal bracket; the spraying device communicates with a high pressure water feeding device at the outer part of the oil storage tank; the water mist spraying device comprises a water collector arranged at the circle center part of an aluminum alloy ring and six radial metal tubes, and further comprises an inner annular metal water tube, a middle annular metal water tube and an outer annular metal water tube which form a concentric circle structure; the near-ends of the metal tubes communicate with the water collector, and the far-ends of the metal tubes communicate with the inner annular metal water tube, the middle annular metal water tube and the outer annular metal water tube; and a plurality of water mist nozzles are uniformly arranged on each of the inner annular metal water tube, the middle annular metal water tube and the outer annular metal water tube in the circumferential direction. According to the annular water mist fire extinguishing system, with the fire extinguishing conditions met, the fire extinguishing water mist is directly sprayed to ignition combustion areas in the tank, so that the purpose that the fire is extinguished more quickly and effectively is achieved, the temperature of combustible gases in the tank can be decreased more quickly, and secondary combustion and explosion are prevented.

The invention relates to an application of a multielement class-D dry powder extinguishing agent in extinguishment of metallic magnesium and metallic sodium fires. According to experimental models, test procedures and test requirements on the basis of the requirements of A979-2012 'Class-D Dry Powder Extinguishing Agent', fire-extinguishing tests on the burning metallic magnesium dry scraps, metallic magnesium dry powder, oil-immersed metallic magnesium scraps and oil-immersed metallic magnesium powder or metallic sodium are carried out by using the multielement class-D dry powder extinguishing agent, wherein the fire-extinguishing success rate reaches 100%. The examination result after the spraying of the multielement class-D dry powder extinguishing agent shows that the fire-extinguishing time is less than 3 minutes, the fire-extinguishing effectiveness is less than 20Kg / m<2>, the surface temperature of the metallic magnesium and the metallic sodium after the fire extinguishing is measured to be decreased below 48 DEG C and the surface temperature of the metallic magnesium dry scraps after the fire extinguishing is decreased below 130 DEG C. After the multielement class-D dry powder extinguishing agent is sprayed for 2 hours, if reaction residues of the metallic magnesium and the metallic sodium after the metallic magnesium and the metallic sodium are burnt out, which are turned over and stirred, cannot burn again, the fire-extinguishing application is successful.

The invention discloses an annular foam fire extinguishing system of an oil storage tank. The annular foam fire extinguishing system is characterized in that a buoyancy bracket floating on the oil surface and a fire extinguishing foam spraying device are arranged inside the oil storage tank; the fire extinguishing foam spraying device communicates with a fire extinguishing foam feeding device at the outer part of the oil storage tank through a pipeline; supporting floating balls are arranged at the bottom of the buoyancy bracket; the fire extinguishing foam spraying device comprises a foam buffer collector arranged at the circle center part of an aluminum alloy ring and eight fire extinguishing foam conveying tubes which are uniformly and radially distributed on the periphery of the foam buffer collector; the eight fire extinguishing foam conveying tubes are positioned in the same plane; the near-ends of the fire extinguishing foam conveying tubes communicate with the foam buffer collector, and the far-ends of the fire extinguishing foam conveying tubes communicate with an annular fire extinguishing foam tube; and a plurality of fire extinguishing foam outflow holes are uniformly formed in the annular fire extinguishing foam tube in the circumferential direction. According to the annular foam fire extinguishing system, fire extinguishing foam outlets always keep constant distance with the liquid surface, so that the purpose that the fire extinguishing foam is effectively saved is achieved.

The invention discloses application of a multi-component D-type dry powder extinguishing agent in extinguishing aluminum alkyl fire. An aluminum alkyl fire extinguishing test is executed for multiple times according to a test model, test steps and a test requirement of the D-type Dry Powder Extinguishing Agent GA979-2012; rechecking is executed after the extinguishing agent is sprayed, and the extinguishing time is shorter than or equal to 2min; the surface temperature of aluminum alkyl subjected to extinguishing is reduced to be below 48 DEG C; residual reactants of the flamed-out aluminum alkyl and the extinguishing agent are turned over and stirred to ensure no after-combustion; the dry powder extinguishing agent cannot be exploded in water; (4) the extinguishing effect is lower than or equal to 28Kg / m<2>; the extinguishing success rate is 100 percent.

The invention relates to a fire-fighting unmanned aerial vehicle, including a fuselage made of titanium alloy, a rotor, a power device and a control device, the rotor is fixedly connected to the fuselage through a connecting rod, the power device is connected to the control device, and the The camera and the fire bomb launching device on the fuselage, the output end of the camera is connected with the input end of the control device, and the output end of the camera is also connected with the command system of the command center; the fire bomb launching device is fixed on the top surface of the fuselage through a bracket, The fire bomb launching device includes a tapered sleeve for containing fire bombs, a box fixed at the lower end of the tapered sleeve, a transmission channel passing through the upper wall of the box connected to the lower end of the tapered sleeve, and a box fixed by a transverse bracket. In the delivery bin, one end of the horizontal bracket is fixedly connected to the side wall of the bracket, and the other end of the horizontal bracket is fixedly connected to the outer wall of the delivery bin. The invention has simple structure, convenient operation, wide application range, and can control the precise projection of fire bombs.

The invention relates to full-automatic forest fire-fighting engineering equipment. A forest district is divided into a plurality of regions, each region is provided with a plurality of fire-fighting isolation zones by which each region is divided into a plurality of cells, fire-fighting isolation zones are arranged around each cell, an upper and lower combination spraying system is arranged in each fire-fighting isolation zone and comprises an upper spraying pipe, a lower spraying pipe and a water supply pipe connecting the upper spraying pipe with the lower spraying pipe, nozzles are arranged on the upper and lower spraying pipes, each water storage pond is respectively connected with a master region water pipe which is connected with a branch region water pipe, the branch region water pipe is connected with the upper and lower combination spraying system, an electronic automatic valve is arranged at a position in which the branch region water pipe is connected with the upper and lower combination spraying system, an infrared sensor and a monitoring camera are arranged in each cell, and the infrared sensors, the monitoring cameras and the electronic automatic valves are all connected with a control system. According to the full-automatic forest fire-fighting engineering equipment, fire behaviors can be discovered in time, a fire can be automatically and fast put out.

The invention discloses a cross-shaped dry powder extinguishing cover system comprising a high-pressure air compressor, a high-order dry powder extinguishing agent storage container, an emanation powder-pumping device and a dry powder extinguishing agent jetting device which are connected in sequence through a conveying steel pipe. The dry powder extinguishing agent jetting device comprises four cross-shaped distribution pipes, metal supports which are mounted under the tail ends of the distribution pipes, a distributor which is arranged in the intersection position of the four distribution pipes and an annular metal reinforcing rib which is connected with the four distribution pipes. The upper port of each distribution pipe communicates with the distributor. The tail ends of the four distribution pipes are closed, accordingly a concentric circle is formed. Dry powder extinguishing agent jetting pipe orifices with the openings being perpendicularly formed downward are arranged at same intervals in the length directions of the distribution pipes. The conveying steel pipe located at the output end of the emanation powder-pumping device is connected with the dry powder extinguishing agent distributor through a metal flexible pipe. According to the cross-shaped dry powder extinguishing cover system, an extinguishing agent is jetted concentratedly in the area near the roots of combustion flame, so that a fire of leakage combustibles of an underground pipe network can be extinguished rapidly and effectively.

The invention relates to a spherical explosive powder fire extinguisher, comprising a spherical shell and a dry powder extinguishing agent, wherein the spherical shell is filled with the dry powder extinguishing agent; a satchel charge and an ignition device are arranged at the center of the spherical shell; the ignition device is used for controlling detonation of the satchel charge; the spherical shell is composed of two semispherical shells; the ignition device preferably is a remote control ignition device which is arranged at the center position of the spherical shell, or a temperature control blasting fuse which is arranged out of the spherical shell and is connected with the satchel charge through a lead; the shell and the internal dry powder extinguishing agent are simultaneously exploded by the explosive force which is generated after the satchel charge in the fire extinguisher explodes; the dry powder extinguishing agent is evenly sprayed on a comburant in a fire, so as to put out the fire; an impact wave generated in explosion also plays a fire-extinguishing role; and the fire-extinguishing effect is significant.

The invention provides an environment-friendly missile-gun fire vehicle, which comprises a vehicle body. A gun barrel fixing platform is arranged on the upper side of the vehicle body, a gun barrel is fixed on the gun barrel fixing platform and comprises a magazine holder; a controller, an elevation angle driving motor, a rotating motor and an inert gas storage tank are arranged in the vehicle body; the elevation angle driving motor is connected with the gun barrel fixing platform through an elevation angle rotating gear plate; a rotary fort is arranged in the vehicle body, one end of the rotary fort is fixedly connected with the elevation angle rotating gear plate, and the other end of the rotary fort is connected with a gear of the rotating motor through the rotating gear plate; the inert gas storage tank is connected with the gun barrel through an air duct. According to the environment-friendly missile-gun fire vehicle, high-pressure gas is taken as a power source; after aiming at a fire source, the fire vehicle can fire a carbon dioxide fire extinguishing bomb to instantly extinguish flame and isolate oxygen, and firefighters do not need to arrive in a fire ground and can quickly extinguish the fire, so that the labor and the materials are saved, and the material and property loss caused by a fire disaster is reduced.

The invention discloses a foam extinguishing agent. The foam extinguishing agent is composed of, by mass, 1-3% of perfluorinated betaine, 3-8% of fluorinated alkyl betaine, 1-5% of urea, 5-15% of Sodium alpha olefin sulfonate, 10-15% of lauryl sodium sulfate, 10-16% of alkyl polyglucoside (1412) and the balance water. The invention further discloses application of the foam extinguishing agent. The thickness and the stability of films generated by the foam extinguishing agent are high, the extinguishing speed is high, and the extinguishing effect is good.

The invention relates to a forest fire prevention fire extinguishing agent. The invention aims to solve the problem that a fire scene fires back to be reburnt after the fire prevention fire extinguishing agent is used when a forest fire occurs. The forest fire prevention fire extinguishing agent is prepared from the following components in weight percentage: 20-30 percent of lauramide propyl hydroxysulfobetaine, 0.2-1 percent of sodium carboxymethylcellulose, 1-6 percent of urea, 1-15 percent of dodecyl dimethyl betaine, 1-10 percent of sodium dodecyl sulfate, 5-25 percent of ethylene alcohol, 0.2-1.2 percent of fluorocarbon surfactant and the balance of water. The forest fire prevention fire extinguishing agent can be used for forest fire extinguishing.