3947 results about "Fire prevention" patented technology

The invention relates to the field of building materials, and in particular relates to a self-heat-preservation building block and a self-heat-preservation wall body consisting of self-heat-preservation building blocks, which aim to solve the technical problem that conventional building wall body materials cannot have the functions of bearing, heat preservation and fire prevention simultaneously. According to the technical scheme, the self-heat-preservation building block comprises a building block body which is made of foamed cement; transverse through slots are formed in the upper surface of the building block; vertical through holes are formed in the building block; one or several of concrete slurry, cement mortar, plaster and heat preservation plaster is/are filled into the transverse through slots to form core columns; concrete slurry or cement mortar is filled into the vertical through holes to form core columns; and the core columns and the building block body are combined to form a whole body. The self-heat-preservation wall body consists of the self-heat-preservation building blocks. The self-heat-preservation building block and the self-heat-preservation wall body have functions of heat preservation and fire prevention as well as bearing.

The invention discloses a complex foam extinguishing agent for a coal mine and belongs to the technical field of fire prevention and extinguishing. The extinguishing agent is prepared from the following raw materials: main materials are 40 to 60 percent aqueous solution of ammonium bicarbonate or sodium bicarbonate and concentrated sulfuric acid in a solute mass ratio of 2:1-3:1, and auxiliary materials are a stabilizer and a foamer, wherein the auxiliary materials are 0.1 to 2 percent of the total weight of the main materials. Through a test, the extinguishing agent has the foaming coefficient of 20-200 and the foam stabilizing time of more than or equal to 2.5 hours. According to the foam extinguishing agent, the foam of inert gas carbon dioxide is applied to fire prevention and extinguishing of the coal mine, and the foam is diffused in a fire area and fills a fire space, so that the oxygen concentration in the fire area is rapidly reduced, fire is extinguished due to oxygen deficiency in the fire area, temperature is reduced and a fire extinguishing effect is good. The technology also can be applied to coal bed transformation, CO2 foam is easily absorbed by coal to displace partial methane, the recovery ratio of coal seam gas is improved, and CO2 is acid to reduce the generation of secondary precipitates, so that a gas drainage effect is improved. The complex foam extinguishing agent is simple and feasible, and low in cost.

Fire prevention and suppression systems and breathable fire-extinguishing compositions are provided for rooms, houses and buildings, transportation tunnels and vehicles, underground and underwater facilities, marine vessels, aircraft, space stations and vehicles, military installations and vehicles, and other human occupied objects and facilities. The system provides a low-oxygen (hypoxic) fire-preventive atmosphere at standard atmospheric or slightly increased pressure. The system employs an oxygen-extraction apparatus supplying oxygen-depleted air inside a human-occupied area or storing it in a high-pressure container for use in case of fire. A breathable fire-extinguishing composition, being mostly a mixture of nitrogen and oxygen and having oxygen content ranging from 12% to 17% for fire-preventive environments. The fire-suppression system is provided having fire-extinguishing composition with oxygen concentration under 16%, so when released it creates a breathable fire-suppressive atmosphere having oxygen content from 10 to 16%. A technology for automatically maintaining a breathable fire-preventive composition on board a human-occupied hermetic object is provided.

The invention discloses a big data mining based integrated forest fire prevention informatization system. The big data mining based integrated forest fire prevention informatization system comprises a big data platform, and a multi-dimension perception subsystem, an early-warning prediction subsystem and a multi-hierarchy application subsystem, which are connected with the big data platform, respectively; the multi-dimension perception subsystem is used for acquiring various forest data, the big data platform is used for pre-processing and computing the data; the early-warning prediction subsystem can realize fire warning and prediction and forest fire spreading prediction; and the multi-hierarchy application subsystem is used for realizing forest resource planning, forest fire prevention management, and forest fire suppression dispatching and command. The big data mining based integrated forest fire prevention informatization system can realize multi-azimuth comprehensive monitoring on a forest, is used for mining and analyzing historical data and mass forestry data obtained by real-time monitoring to accurately predict forest fire and provide an early-warning function, can analyze the development tendency of the forest fire to provide aid in decision making, can put out the forest fire in an airland and multi-method manner, and can provide high-efficiency and accurate equipment and personnel assignment; and the system is integrated and has high informationization degree.

A water spray head for spraying water spray mist in a fire prevention system, includes a water supply duct; a spray head upper body; a fluid chamber; and a “w” shaped bottom, on which at least two rings of nozzles are installed. The water spray head has a body with a “w” shaped bottom, a chamber and two rings of liquid mist nozzles on the slant walls of the “w” shaped bottom. The liquid mist sprays from the nozzles at the inner ring may collide with each other directly or tangentially to form finer liquid droplets and a more uniformly distributed “solid cone” water spray. The water mist formation of the individual nozzle is also designed to be based on the collision of liquid streams from multiple small flow channels in a large flow channel, thereby forming even finer droplets.

The invention belongs to the technical field of mine waste treatment and fire prevention, relating to a fire proofing and extinguishing agent composite for a mine and a preparation and use method thereof. The fire proofing and extinguishing agent composite comprises the following components in percentage by weight: 1.0-6.0wt% of glass fibre substance, 3.0-6.0wt% of lime, 3.5-6.0wt% of loess, 3.1-6.2wt% of coal ash, 0.01-0.03wt% of binding agent, 0.01-0.03wt% of water-retaining agent, 0.002-0.013wt% of dispersing agent and 80-90wt% of water. The fire proofing and extinguishing agent is non-toxic, harmless and safe to use and has the advantages of adjustable proportion, high inhibition rate and better inhibition performance. The slurry is easy to flow under the wet state and is in solid net body state after being dried, and the slurry has stronger impermeable plugging function; grouting equipment has strong adaptability, professional grouting equipment is adopted, and spraying and planting equipment can be used for construction. The slurry has big adjustable range of activity period and can be adjusted within 1-30 hours.

The invention relates to inorganic heat-insulating dry powder mortar, which comprises the following components in percentage by weight: 30 to 95 percent of inorganic gelled material, 5 to 70 percent of lightweight aggregate and 0 to 10 percent of additive, wherein the inorganic gelled material comprises 75 to 90 weight percent of desulfuration gypsum and 10 to 25 weight percent of cement; the lightweight aggregate is hydrophobic expanded perlite or vitrified micro bubbles or a mixture of the hydrophobic expanded perlite and the vitrified micro bubbles; and the additive comprises a composite retarder, a water retention agent, a thickening agent, a cementing compound and a reinforcing agent. The inorganic heat-insulating dry powder mortar can replace cement mortar and mixed mortar, is applied to non-humid wall surfaces such as the inner side of an outer wall, a separating wall, an inner partition wall, a ceiling and the like, has the characteristics of heat preservation, heat insulation, crack resistance, fire prevention, ageing resistance, environmental protection, biological bite corrosion prevention and the like, and can improve the heat-preserving and heat-insulating performanceof wall bodies.

Fire prevention and suppression systems and breathable fire-extinguishing compositions are provided for rooms, houses and buildings, transportation tunnels and vehicles, underground and underwater facilities, marine vessels, submarines, passenger and military aircraft, space stations and vehicles, military installations and vehicles, and all other human occupied objects and facilities. The system provides a breathable hypoxic fire-preventative atmosphere at standard atmospheric or local ambient pressure. The system employs an oxygen-extraction apparatus supplying oxygen-depleted air inside a human-occupied area or storing it in a high-pressure container for use in case of fire. A breathable fire-extinguishing composition is introduced for constant fire-preventive environments, being mostly a mixture of nitrogen and oxygen and having oxygen content ranging from 12% to 17%. A fire-suppression system is provided employing a fire-extinguishing composition with oxygen concentration under 16%, so when released it creates a breathable fire-suppressive atmosphere having oxygen concentration of approximately 16% (or lower if needed) with possible addition of carbon dioxide. A technology for automatically maintaining a breathable fire-preventive composition on board a human-occupied hermetic object is provided by introducing inert ballast that automatically maintains oxygen content under the Hypoxic Threshold. An aircraft fire prevention and suppression systems are provided utilizing hypoxic fire extinguishing compositions for producing breathable atmosphere onboard having fire-retarding properties.

The invention relates to composite light building block and preparation method thereof. The slurry comprises brine, light burnt powder, filler, air producing agent, foam stabilizer, adjusting agent, cement, water and aggregate. Taking a 60*15*25cm building block with the volume weight of 18kg as an example, the slurry is prepared from the following raw material in percentage by weight: 30-50% of brine, 0.008-0.01% of air producing agent, 25-35% of light burnt powder, 0.0005-0.001% of foam stabilizer, 20-30% of filler, and the balance of adjusting agent. The invention can improve the processing property, increases the slurry flowability, is easy to cast in forming, has short production period and low manufacturing cost, increases the activity, enhances the impermeability and post strength, reduces dry shrinkage, and prevents cracking. The composite light building block has the advantages of light weight, high strength, small volume density, low heat conduction coefficient, heat insulation, sound insulation, fire prevention, heat isolation, freezing and melting resistance, little dry shrinkage, and the like. By using the gas-added building block to replace the traditional bearing building block as the building wall filling material, the self weight of the building structure is decreased, the foundation burden is reduced, and the energy and material are saved.

An aircraft fire-extinguishing system provides automatic fire prevention and/or suppression simultaneously in fuel tanks, cargo compartments and, when needed, in cabin using injection of hypoxic (oxygen-depleted) air produced onboard in an air-separation device utilizing the flow and pressure of the bleed air. The same air-separation device allows supplying passengers and crew with unlimited amounts of oxygen for as long as needed. New methods of a rapid fire suppression utilizing the propulsion of water mist or fire-extinguishing foam by hypoxic air are presented. The combination of water mist or foam with hypoxic air allows to present two innovative fire-extinguishing compositions.

Disclosed is a circuit board fault infrared image automatic detection method. The image information of the working state of a circuit board is obtained by collecting a visible light image and an infrared image simultaneously. First, a visible light image and an infrared image of a circuit board working normally are collected and stored in a database. During detection of the circuit board which malfunctions, circuit board images (including a visible light image and an infrared image) taken are compared with the images under a normal state in the database, and a computer processes the images to find an area and a specific position where a component or line with abnormal temperature is located and automatically make a mark on the visible light image. Thus, automatic detection of a possible faulty component of the circuit board is completed. The technology can be applied to fields such as circuit board maintenance and equipment fault monitoring, and can also be applied to power equipment fault repair, petrochemical pipeline coke plugging, thermal insulation layer fall-off check, railway locomotive axle condition monitoring, fire prevention, flood control, disease prevention and other temperature change related non-contact measurement fields.

The invention provides a vacuum heat-insulating board which comprises an upper heat-insulating board and a lower heat-insulating board, wherein the peripheries of the upper heat-insulating board and the lower heat-insulating board are welded together through using a welding flux, a closed vacuum layer is formed between the upper heat-insulating board and the lower heat-insulating board, the upper heat-insulating board and the lower heat-insulating board are flattened heat-insulating boards or convex-sided heat-insulating boards, and the convex side of each convex-sided heat-insulating board faces outwards. The production method of the vacuum heat-insulating board provided by the invention is simple in process, and the prepared vacuum heat-insulating board overcomes the defects of the existing heat-insulating board, so that the tightness of a vacuum layer of the vacuum heat-insulating board can be effectively guaranteed, the service life of the vacuum heat-insulating board is prolonged, and the strength and heat insulation, sound insulation and fire prevention properties of the vacuum heat-insulating board can be increased.

The invention discloses water-based elastic heat proofing, heat insulation and energy-saving coating. The coating comprises elastic emulsion, hollow micro-beads powder, far-infrared ray reflecting powder, titanium dioxide, filler, cellulose, anti-foaming agent, dispersing agent, pH conditioning agent, rheologic thickening agent and soft water. The invention also discloses a preparation method of the water-based elastic heat proofing, heat insulation and energy-saving coating. The water-based elastic heat proofing, heat insulation and energy-saving coating has the advantages that the coating can be coated on a variety of backing materials, and of heat insulation and heat preservation, fire prevention, water resistance, anti cracking and noise control, and the like. The coating is suitable for the coating of the exterior wall, the roof and the interior wall and the like, and is also suitable for decreasing the temperature and reducing the tricking water of the metal surface such as the petrochemical industrial storage tank pipeline and the like.

The invention relates to fire-retardant paint with a steel structure, which is prepared from the following raw materials proportioning by weight: 45 to 60 of composite substrate resin, 6 to 8 of melamine, 6 to 8 of pentaerythritol, 16 to 20 of ammonium polyphosphate, 4 to 10 of expansible graphite, 2 to 5 of nano magnesium hydroxide, 1 to 3 of zinc phosphate, 1 to 3 of zinc borate, 2 to 5 of aluminum hydroxide, 3 to 5 of aluminum polyphosphate, 6 to 9 of titanium dioxide, 0.5 to 0.8 of flatting agent and 15 to 20 of acetone. The paint has excellent capabilities of fire prevention and corrosion prevention.

The invention relates to a manufacturing method of a building material, in particular to an ecological fire preventing and heat insulating building material used for fabricating a wall board. The manufacturing method comprises the following steps: adding 30-100 parts of water to 100 parts of Portland cement and stirring the water and the cement; introducing 30-1,000 parts of foams generated by a foaming agent to the obtained mixture; then adding 50-600 parts of perlite, 80-700 parts of ceramsite, 10-200 parts of glass beads and 0.1-5 parts of environmental protection fibers to the foams; pouring the mixture into a board mould; and after the mixture is naturally solidified, removing the board mould and a lining board to finish manufacturing the ecological fire preventing and heat insulating building material. Fire preventing and environmental-friendly materials are adopted as raw materials, thus after being used as the wall board, the building material enables the wall board to have obvious advantages of heat preservation, heat insulation, sound insulation and light weight. Meanwhile, the material also has the advantages of fire prevention, corrosion resistance, firmness, toughness, no poison, no odor, no harm to human bodies and no pollution to environment.

The instant invention relates to a fire extinguishing apparatus. Particularly to an apparatus that includes at least one container that includes a fire retardant gel. The gel is formed from dehydrated superabsorbent polymer and water. The pre filled containers include at least one control valve or frangible portion to release the fire retardant to extinguish the fire.

An electrical device including a heat sensing circuit interrupter to enable a load to be selectively coupled to or disconnected from a power source in accordance with a level of a sensed temperature includes a relay assembly operable between a closed state when the sensed temperature is below a predetermined limit temperature, thereby enabling the coupling of the load to the power source, and an open state when the sensed temperature is above the predetermined limit temperature, thereby electrically disconnecting the load from the power source. The device further includes a sensor assembly including a light source operatively associated with a light sensor. The light sensor is configured to be sensitive to specific levels of the sensed temperature and the light source is configured to emit light along a plurality of optical paths at any one of a plurality of wavelengths sensitive to temperature. The light sensor is further configured to sense temperature at any one of a plurality of operating points on the electrical device and trigger the relay assembly between the closed state and the open state.