31results about How to "Good resistance to reflammation" patented technology

The invention discloses a dry powder extinguisher containing modified smectite powder, which is prepared from the following raw materials in parts by weight: 70-90 parts of modified smectite powder, 5-10 parts of mica powder, 10-15 parts of zinc sulfide hydrate, 3-5 parts of calcium hydroxide, 5-8 parts of magnesium stearate, 3-5 parts of nitrogenous silicon oil, 2-3 parts of expandable graphite, 2-3 parts of magnesite, 2-3 parts of urea, 5-8 parts of calcium lignosulphonate, 3-5 parts of bamboo charcoal fiber, 2-3 parts of industrial essence, 2-4 parts of zinc borate, 1-3 parts of chlorinated paraffin and 8-10 parts of kieselguhr. The extinguisher has the advantages of high fire extinguishing efficiency, high moisture resistance, favorable after-combustion resistance, environment friendliness and simple production technique, and is suitable for various fire hazards.

The invention discloses a fire extinguishing agent containing modified medical stone powder, which is prepared from the following raw materials in parts by weight: 50-80 parts of modified medical stone powder, 5-10 parts of talcum powder, 10-15 parts of zinc sulfide hydrate, 3-5 parts of calcium carbonate, 5-8 parts of magnesium stearate, 3-5 parts of methyl silicone oil, 2-3 parts of hydrophobic silica white, 3-5 parts of atlapulgite, 2-3 parts of perlite, 2-3 parts of ethylene glycol, 5-8 parts of calcium lignosulphonate, 3-5 parts of bamboo charcoal fiber, 2-3 parts of industrial essence, 2-4 parts of zinc borate, 1-3 parts of chlorinated paraffin, 5-10 parts of glass bead and 8-10 parts of kieselguhr. The fire extinguishing agent has the advantages of high fire extinguishing efficiency, high moisture resistance, favorable after-combustion resistance, environment friendliness and simple production technique, and is suitable for various fire hazards.

The invention discloses a gas-solid composite dry powder extinguishing agent and a preparation method therefor. The method is characterized by the steps as follows: dissolving urea in an ethanol-water mixed solution with a volume ratio of ethanol to water being 1:2-5, the concentration of magnesium ion being 0.2-1.2 mol / L and the molar ratio of the urea to the magnesium ion being 2-6:1; heating the mixed solution at 90-120 DEG C for 8-12 hours to obtain a white precipitate of magnesium hydroxide; filtering the solution; washing the white precipitate; drying the white precipitate at 120 DEG C for 6-12 hours; placing the dried magnesium hydroxide precipitate into a pressure-resistant container; vacuumizing the container; filling the pressure-resistant container with 2-bromo-3,3,3-trifluoropropene (BTP) liquid, wherein the mass of the 2-bromo-3,3,3-trifluoropropene accounts for 5.0-16% of the mass of the system; allowing the system to stand at 35-50 DEG C for 12-24 hours; cooling the system to room temperature; adding talcum powder to the container with the mass of the talcum powder accounting for 1.0-4.0% of the mass of the system; mixing the powder uniformly to obtain the gas-solid composite dry powder extinguishing agent. The extinguishing agent is low in corrosivity and good in anti-reburn performance. The raw materials of the extinguishing agent are cheap and easy to obtain and the preparation process is simple. The extinguishing agent is suitable for various fire hazards such as solid fires, combustible gas fires and liquid fires or the like.

The invention provides a high-performance environment-friendly aqueous film-forming foam extinguishing agent which comprises the following components in percentage by weight: 3-6% of a fluorine-containing surfactant, 3-20% of a carbon hydrogen surfactant, 3-6% of an organosilicon surfactant, 0.1-4% of plant polysaccharides, 8-20% of a solubilizer, 0.1-4% of an ion complexing agent, 0.1-2% of an antibacterial agent and the balance of water. Under interactions of the components of the contents, the extinguishing agent has an excellent fire extinguishing function and is good in foam performance,high in fire extinguishing efficiency, rapid in fire extinguishing speed, good in after-combustion prevention and sealing performance, long in preservation life, easy in raw material obtaining, environment-friendly and easy in biodegradation, free of PFOS (perfluorooctane sulfonates) or salts thereof, and free of environment pollution; and under a condition that the foam expansion rate is 7.3-8.1,the 25% drainage time of the extinguishing agent is 3.4-4.1 minutes, the fire extinguishing time (compulsive application) is 35-47 seconds, and the burning resistance time (compulsive application) is13.1-17.4 minutes.

The invention discloses an efficient low-viscosity easily-degradable anti-soluble compressed air foam extinguishing agent and a preparation method thereof. The extinguishing agent comprises the following components in percentage by weight: 5-25% of a hydrocarbon surfactant, 3-10% of a fluorocarbon surfactant without perfluorooctylsulfonate, 1.5-10% of a low-viscosity anti-soluble component, 3-15%of a foam stabilizer, 5-15% of an antifreeze agent, 0.2-2% of a preservative and the balance of water. The extinguishing agent has the characteristics of high efficiency, low viscosity, low mixing ratio and easiness in degradation; and the mixing ratio is flexibly selected for different fire extinguishing objects, so that various types of fires can be quickly extinguished. All the components of the extinguishing agent can be rapidly biodegraded in the environment and have no pollution to the environment. According to the preparation method, the problems that macromolecular polysaccharide substance powder is easy to agglomerate in the water, long in swelling time and difficult in uniform component mixing in a traditional adding method are effectively avoided, and the foaming condition of the extinguishing agent in the production process is effectively controlled, so that the production efficiency is remarkably improved.

The invention discloses a fire protection system for a valve side sleeve of an extra-high voltage converter transformer and a using method. The system comprises an oil collecting pit, a compressed airfoam generating device, a foam dry tube, a zoning valve and a compressed air foam spray system. The fire protection system adopts the independent oil collecting pi filled with pebble beds, effectively retrains the valve side sleeve, a valve side lifting base and transformer oil flow spread after an accident occurs, reduces a fire scale to the greatest extent, reduces fire loss, and protects safety of adjacent facilities and a valve hall. The compressed air foam spraying system adopts a spray tube without a spray head and a branch tube, and clings to a fireproof wall, so that damages, on a foam release device, of valve side sleeve explosion impact are reduced to the greatest extent, and safety reliability of the system is improved, and therefore, the technical problem of fire control of the valve side sleeve of the extra-high voltage converter transformer is completely solved, the fire protection system can be used for the extra-high voltage converter transformer, and also can be usedfor other converter transformers.

The invention discloses a preparation method of a low-cost ABC dry powder extinguishing agent. The preparation method comprises the steps of mixing carbon nano tubes with concentrated sulfuric acid, carrying out standing, filtration, washing, ball milling and drying, adding calcium hydroxide ultrafine powder and mica powder, and uniformly mixing the materials to obtain a prefabricated material; and adding wet monoammonium phosphate, sepiolite powder, medical stone powder, light calcium carbonate and silicone oil into the prefabricated material, stirring the materials, and carrying out hot airconstant-temperature dehydration and smashing, so as to obtain the low-cost ABC dry powder extinguishing agent. According to the preparation method of the low-cost ABC dry powder extinguishing agent provided by the invention, production cost of the obtained dry powder extinguishing agent is low, the dispersion effect after fire heating is good, fire extinguishing efficiency is high, and reburningcan be effectively prevented.

The invention provides a fire suppression method and system for a vehicle at a charging position. The system comprises a fire detection device and a charging position automatic fire extinguishing device. The fire detection device comprises a detection controller. The charging position automatic fire extinguishing device comprises a fire extinguishing agent storage box, a centrifugal water pump, a water delivering pipeline and spray heads which are sequentially connected. The spray heads are arranged on at least two sides of the charging position. A water-based fire extinguishing agent is stored in the fire extinguishing agent storage box. The water delivering pipeline is connected with a municipal water pipeline through a three-way valve. The detection controller is connected with the centrifugal water pump. The fire detection device further comprises a smoke sensor, a temperature sensor and a gas sensor. The smoke sensor, the temperature sensor and the gas sensor are all connected with the detection controller. After the charging position automatic fire extinguishing device is started, a large amount of water-based fire extinguishing agent can be rapidly sprayed, a layer of thin water film can be formed and expanded on the surface of a combustible by the fire extinguishing agent, and the combustible is isolated from air.

The invention relates to the technical field of an extinguishing agent, and particularly discloses a preparation method of a BC dry powder extinguishing agent. The preparation method comprises the steps as follows: uniformly mixing a grinding assistant and monoammonium phosphate, and grinding to a state that particle sizes of more than 90% of particles in a mixture are smaller than 6mum so as to obtain a matrix; and adding hydrophobic white carbon black into the matrix, carrying out primary stirring, warming to a temperature of 56 to 65 DEG C, adding a polyether modified organic silicon surfactant, carrying out secondary stirring, warming to a temperature of 105 to 115 DEG C, carrying out tertiary stirring, and carrying out quartus stirring to obtain the BC dry powder extinguishing agent.The BC dry powder extinguishing agent obtained by the preparation method has excellent reburning resistance.

The invention belongs to the field of fire extinguishing agents and particularly provides a metal zirconium fire extinguishing agent which comprises the following components in percentage by mass: 30%-32% of modified quartz sand; 32-35% of modified sodium chloride, 20%-23% of ammonium polyphosphate, 2%-3% of magnesium stearate, 3%-4% of hydrophobic silicon dioxide, 1%-2% of vermiculite powder and1% of mica powder. In the fire extinguishing process, chemical fire extinguishing and physical fire extinguishing can be combined, a reaction chain of metal zirconium combustion is cut off, and the good effects of cooling, after-combustion resistance and dust explosion inhibition are achieved. The invention further provides a preparation and use method of the zirconium metal fire extinguishing agent. The preparation method is simple, low in cost, easy to store and convenient to use.

The invention belongs to the technical field of fire extinguishing materials, and particularly relates to a foam fire extinguishing material containing closed-cell foam ceramic spheres, and a preparation method thereof. According to the present invention, the used closed-cell foam ceramic spheres have relatively large specific gravity and hydrophilic oleophobic property, such that the closed-cellfoam ceramic spheres and the fluoroprotein foam fire extinguishing agent form the layered structure when the closed-cell foam ceramic sphere and fluoroprotein foam fire extinguishing agent mixture asthe extinguishing material is sprayed to the sea surface, such that the closed-cell foam ceramic sphere layer can move along with the sea surface so as to buffer the foam protein on the upper layer, reduce the tearing damage of the up and down sea surface disturbance to the foam protein layer, ensure the continuity of the foam protein layer and improve the sealing effect of the foam protein layerto the oil surface; and the closed-cell foam ceramic spheres of the closed-cell foam ceramic sphere layer are sandwiched with the foam protein, wherein the foam protein can be well protected, and hascharacteristics of good stability and long fireproof time, such that the foam fire extinguishing material has advantages of excellent stability, excellent burn resistance and excellent re-ignition resistance.

The invention provides a high-performance and environment-friendly aqueous film-forming foam fire extinguishing agent, which comprises 3-6% of fluorine-containing surfactant, 3-20% of hydrocarbon surfactant, organic silicon surfactant 3% to 6%, plant polysaccharide 0.1 to 4%, solubilizer 8 to 20%, ion complexing agent 0.1 to 4%, bacteriostat 0.1 to 2%, and the balance is water. The above-mentioned fire extinguishing agent has excellent fire extinguishing performance under the interaction of the above-mentioned components, and has good foam performance, high fire extinguishing efficiency, fast speed, good re-combustion resistance and sealing performance, and long storage period. The raw materials are easy to obtain; all are environmentally friendly and easily biodegradable; they do not contain PFOS and its salts, and will not cause environmental pollution. Under the condition of foaming ratio of 7.3-8.1, the 25% liquid drainage time of fire extinguishing agent is 3.4-4.1min;

The invention discloses a highly concentrated environment-friendly fluorine-free compressed air foam fire extinguishing agent. Its components and weight percentages are: foaming agent 10-25%, flow enhancer 5-18%, foam stabilizer 5-25%, antifreeze agent 8-15%, bactericide 0.3-1.2%, and the balance for water. The foam fire extinguishing agent of the present invention has the characteristics of high concentration, and the minimum mixing ratio can be as low as 0.5%. The freezing point can reach ‑35°C, and it can be used normally in a low temperature environment. The product is suitable for fresh water and sea water. The invention can quickly extinguish fires of non-water-soluble flammable liquids, has strong resurgence resistance, can also quickly extinguish solid material fires, and is applicable to a wide range of fire extinguishing objects. The product does not contain fluorosurfactants and ether components, each component can be rapidly biodegraded in the environment, and has no toxic effect on animals and plants in the environment, and has no pollution to the environment after use, and has no impact on human health.

A fire extinguisher assembly device, comprising a frame (1), on which a fire extinguishing device (2) is installed, and a switch (3) is installed on the fire extinguishing device, and when a fire occurs, the switch is activated to extinguish the fire; a guide is set on the frame The device (4) can determine the location of a large fire; the pressurization device (5) is provided to ensure the continuous high pressure of the fire extinguishing device; the induction device (6) is installed in the fire extinguishing device to send a warning message when the fire extinguishing material is insufficient; It is displayed by sound or LED light; realizes fast and efficient fire extinguishing, good anti-reburning effect, strong operational practicability, high work efficiency, fast fire extinguishing speed, high safety and long duration.

According to a fire extinguishing device with a time delay function, on one hand, a main blasting fuse is a low-speed blasting fuse, the surface of the main blasting fuse is wrapped with protective blasting paper, the protective blasting paper can be moisture-proof tin foil gummed paper, and the protective blasting paper can conduct twisting and blasting protection on the main blasting fuse, so that the main blasting fuse is prevented from fast burning and fire crossing and is moisture-proof; and therefore the fire extinguishing device has a delayed explosion function; and on the other hand, a standby lead is further included, one end of the standby lead is located on the outer side of a center cylinder and extends in the mode of being attached to the top wall of the center cylinder, the other end of the standby lead penetrates through the top wall of the center cylinder and then is connected with a pyrotechnic composition, the position of the standby lead and the position of the main blasting fuse are staggered, two lines for igniting the pyrotechnic composition of the standby lead and the main blasting fuse are formed, the two lines are not liable to interfere with each other, when one line fails and cannot be ignited, the other line can also achieve the ignition function, and the problem that the lines cannot be ignited when put into a fire source is solved.

The invention discloses an environment-friendly water-based fire extinguishing agent and a preparation method thereof. The water-based fire extinguishing agent comprises a C6 short-chain fluorocarbon surfactant, a C6 fluorine-containing polymer, a foaming agent, a flame retardant and an organic solvent, and the mass part ratio of the C6 short-chain fluorocarbon surfactant to the C6 fluorine-containing polymer to the foaming agent in the fire extinguishing agent is (3-10): (3-10): (8-19). In addition, the fire extinguishing agent further comprises an anti-freezing agent. The water-based fire extinguishing agent has the advantages of being low in surface tension, wide in application range, high in fire extinguishing speed and good in after-combustion resistance, and has the high fire extinguishing grade. The water-based fire extinguishing agent does not contain PFOS and PFOA, is not prone to being enriched in the environment, has no pungent smell, can be completely biodegraded after being sprayed, and is easy to clean after fire extinguishing.

The invention relates to a composite aerosol fire extinguishing material with a bioremediation function. The composite aerosol fire extinguishing material comprises the following components by weight: 55-70% of an oxidant, 5-10% of a combustible agent, 5-15% of a catalytic modification agent, 5-10% of extinguishing flame retardant granules, 2-5% of a bioremediation agent, and 2-8% of a forming additive. The preparation method of the composition includes: fully grinding and mixing the solid components according to the weight percentage, then conducting thermomechanical treatment, and carrying out pressure forming in a pressure die to prepare a grain for filling of fire extinguishing equipment. The fire extinguishing material prepared by the method provided by the invention has efficient fire extinguishing efficiency, no destructive effect on the atmospheric ozone layer, and no harm to organisms and environmental safety, can automatically carry out rapid bioremediation on post-disaster environment toxic pollutants, has good stability and reliability, and can be stored for a long time.

The invention discloses a composite dry powder extinguishing agent and a preparation method thereof. The composite dry powder extinguishing agent is prepared from the following main raw materials in parts by weight: 30 to 38 parts of alkali residues, 15 to 22 parts of sodium bicarbonate, 12 to 18 parts of potassium sulfate, 10 to 15 parts of magnesium carbonate powder, 2 to 5 parts of polybutylene, 3 to 7 parts of ammonium sulfate, 8 to 14 parts of gypsum, 4 to 9 parts of chlorinated rubber, 3 to 6 parts of zinc borate, 1.5 to 3.5 parts of tin oxide and 0.8 to 1.8 parts of silicon nitride. The composite dry powder extinguishing agent disclosed by the invention has good fire extinguishing performance for three-dimensional burning type fire and has the advantages of high fire extinguishing efficiency, high moisture resistance, good after-combustion resistance and environment friendliness.