45 results about "Firefighting foam" patented technology

The utility model provides a platform for testing spreading performance of fire extinguishing foam. The platform comprises a test box body with an upper opening, a heating assembly and a test assembly, the test box body comprises a visual loading container and a hollow support located at the bottom of the visual loading container, and the visual loading container is used for loading target combustible liquid; the heating assembly comprises a heating plate, the heating plate is arranged between the bottom of the visible loading container and the hollow support, and the heating plate is used for heating the target combustible liquid in the visible loading container; a foam spray head is further arranged above the visible loading container; and the test assembly is used for recording corresponding data in the foam spreading performance test. The utility model aims to provide a spreadability test platform for different types of fuel oil surfaces and fire extinguishing foam spreadability tests for high-temperature fuel oil surfaces and different types of high-temperature fuel oil combustion surfaces, so as to improve the authenticity of simulating petrochemical fire scenes.

The invention discloses wide-temperature-range self-repairing gradient ceramic fire extinguishing foam, a preparation method and application of the foam in an electrochemical energy storage device, and belongs to the technical field of new energy battery safety. Aiming at the technical bottleneck of a traditional fire extinguishing material in coping with a thermal runaway fire disaster of an electrochemical energy storage device, the defects of an existing material in the aspects of extreme temperature adaptability, electrolyte compatibility and long-acting flame retardance are overcome through unique three-layer gradient structure design and material innovation; the technical bottlenecks of wide temperature range stability, an intelligent response mechanism and after-combustion blocking capacity are broken through, the ultra-wide temperature range structural stability from-50 DEG C to 1600 DEG C is achieved, millisecond-level response to different electrolytes is achieved, and a self-repairing barrier after fire extinguishment can be built. The innovation point is that the gradient ceramic structure design, the dynamic response mechanism and the self-repairing circulating system are adopted, so that the equal-depth fire reignition rate of the lithium battery can be obviously reduced, and the application prospect is wide.

The invention relates to an underground substation compressed air foam fire extinguishing system and fire extinguishing method, and the underground substation compressed air foam fire extinguishing system is characterized in that the underground substation compressed air foam fire extinguishing system comprises a fire monitoring unit, a fire extinguishing control system, a compressed air foam generating unit, a compressed air foam releasing unit and a fire extinguishing standby input unit, a fire early warning signal is monitored and sent to the fire extinguishing control system, the fire extinguishing control system processes the received fire early warning signal and then outputs a control signal to the compressed air foam generating unit, and the compressed air foam releasing unit sprays compressed air foam to extinguish fire. An interface of the fire extinguishing standby input unit is arranged outside the underground transformer substation, and fire extinguishing and cooling are carried out on the interior of the transformer chamber by utilizing the fire extinguishing foam release unit through external fire fighting equipment. The system is matched with an underground transformer substation for use, can provide high-performance compressed air foam for fire extinguishing, and is quick in response and high and reliable in fire extinguishing efficiency.

The present invention is directed to fluorine-free firefighting foams containing one or more biopolymers. The biopolymers of the compositions of the present invention include for example, diutan, guar, xanthan, scleroglucan, and combinations thereof.

A firefighting foam concentrate having a sugar component including a monosaccharide sugar, a sugar alcohol, or a mixture of any two or more thereof; a surfactant component comprising an anionic surfactant, a zwitterionic surfactant, or a mixture of any two or more thereof; and a suspension agent including microfibrillated cellulose and an oligosaccharide, a polysaccharide, or a mixture of any two or more thereof; wherein the composition is substantially free of fluorinated compounds.

The positive pressure multi-dose combined foam fire extinguishing system comprises a foam proportioning device, a mixed gas supply device, a gas-liquid mixer and a foam releasing device; a mixed liquid flow meter is connected with the inlet of a liquid flow regulating valve through a pipeline, the liquid flow regulating valve is connected with one inlet of the gas-liquid mixer, and the other inlet of the gas-liquid mixer is connected with the mixed gas supply device; the mixed gas supply device provides air mixed gas of chemical extinguishing agent, and the mixed gas supply device controls the proportion of the mixed gas injected into the foam mixed liquid according to the size of the foam mixed liquid flow meter; the gas-liquid mixer fully mixes the foam mixed liquid with the mixed gas to foam, and forms fire extinguishing foam with physical and chemical inhibition functions, which is delivered to the foam releasing device through a pipeline. The scheme combines the fire control and cooling and temperature reduction performance of compressed air foam on low-boiling-point flammable liquid fire and the advantages of chemical gas foam on oil vapor afterfire fire extinguishing, and is fast and efficient.

This invention discloses a fire extinguishing and explosion-proof device and its foam generating front end, comprising a shell with chambers. The foam generating front end has a foam spraying channel, a first liquid input channel, and a first gas input channel. Valves are installed in both the first liquid input channel and the first gas input channel. A foaming net is installed inside the shell to divide the chambers into a mixing chamber and a foaming chamber. The foaming chamber is connected to the foam spraying channel, and the mixing chamber is connected to both the first liquid input channel and the first gas input channel. This invention enhances the gas-liquid mixing effect, improves the foaming rate and foam fire extinguishing effect by mixing the gas-liquid mixture multiple times in a primary mixing chamber, a primary mixing chamber, a secondary mixing chamber, and a tertiary mixing chamber before foaming. It can also generate different types of fire extinguishing foam. Combined with different fire extinguishing methods, it can be applied to different types of fire scenarios in energy storage battery thermal safety management systems, enriching the functionality of this invention.

The utility model discloses a folding fire extinguishing foam collection and adhesion performance detection device which comprises a base and a bearing plate, one side of the bearing plate is symmetrically bent towards the back to form a bearing plate hinge seat, one side of the base is symmetrically bent towards the front to form a base hinge seat, the bearing plate hinge seat and the base hinge seat are installed through a supporting arm, and the bearing plate hinge seat and the base hinge seat are connected through a connecting rod. Through the arrangement of the supporting arms, the height and angle of the bearing plate are adjusted, and bearing flanges are symmetrically bent towards the front face of the bearing plate at the ends of the same side or the two sides of the bearing plate and used for testing foam performance parameters such as foaming times and 25% drainage time. By arranging the receiving plate, the adhesion performance of the foam on the surfaces of different plates can be tested; through the folding arm structure, the detection device is small in size and convenient to carry, and meanwhile the bottom can be stably fixed to the ground or mechanical equipment.

A fire suppression system is installed and operated on a vehicle, trailer, machine or implement having wheels, bearings, gears or belt operated pulleys using temperature sensors in wireless communication with a central monitoring system to sense an elevated heat event or fire and activate one or more local, zonal or entire unit fire suppression foaming modules to dispense a fire suppression foam to one or more locations on the vehicle, trailer, machine or implement to avoid and suppress the fire or elevated heat event and alert an operator of the vehicle, trailer, machine or implement as to the real time occurrence of the elevated heat or fire event in time to take remedial action to minimize or avoid damage to person or property, including livestock and cargo.

A foam delivery chute to improve the aerial firefighting process of dropping fire suppressant foam onto fires. The chute is made up of fire-resistant material arranged in a Kresling pattern and designed to provide a guide for the fire suppressant foam. This results in much more accurate delivery of foam, thus making the entire process much more efficient and accurate. The chute is extended or retracted by a mechanical shaft system and is operated by the pilot of the aerial vehicle.

A forest fire suppression system includes one or more satellites having a thermal imaging sensor configured to detect hot spots that are indicative of a forest fire. The satellites are further configured to transmit an alert signal to an emergency authority via a wireless network when a hot spot is detected. An unmanned aerial vehicle (UAV) is remotely controlled by an individual at the emergency authority. The UAV is configured to carry a crate filled with a plurality of fire suppression foam bombs. Each individual fire suppression foam bomb includes a housing configured to be filled with a pressurized foam material, a denotation mechanism, a microcontroller, and an outlet nozzle on the housing. Each individual fire suppression foam bomb is adapted to disperse the foam material when dropped by the UAV from above the forest fire. The system provides a cost-effective and efficient way to detect and extinguish forest fires.

A floor nozzle assembly and systems and methods thereof for delivering a fire suppressant foam to a protected area. The nozzle assembly has a body and deflector in contact with one another to form a plurality of passageways through which a fire suppressant flows. The deflector has a deflector flange and a plurality of projecting members in contact with the body to form the passageways. The nozzle assembly has one or more of the following: i) a radial outer portion at each projecting member having a plurality of curved edges with at least two different curvatures; ii) each passageway is formed by parallel planar sidewalls; iii) the projecting members extend radially over a majority radial length of the deflector flange; and / or iv) the deflector flange has, with respect to a horizontal, a surface at an angle that is less than a support surface of the nozzle body.

The utility model discloses a wind energy system fire control automatic complete equipment belongs to fire control technical field, including base, the both ends of base all are provided with a plurality of support seat, between adjacent two support seat and base and the support seat close to base all are inserted and cooperate and use, the lateral surface fixed mounting of support seat has installation piece no.

The utility model relates to the technical field of coal mine fire fighting, in particular to movable fire extinguishing equipment for a coal mine, which comprises a storage structure, an injection structure and a direction adjusting structure, the storage structure comprises a water storage tank, and a foam tank is fixedly mounted on the front side of the water storage tank; the spraying structure comprises a first rotating seat; the first rotating seat is fixedly mounted on the upper surface of the foam tank; the direction adjusting structure comprises a second supporting rod, the second supporting rod is fixedly installed on the upper surface of the foam tank, and a second hinge seat is rotationally installed at the upper end of the second supporting rod and hinged to the bottom side of the control rod. According to the utility model, the control rod is endowed with the capability of freely rotating within a certain range in the transverse direction and the vertical direction through the mutually vertical rotating directions of the upper end and the lower end of the second hinge seat, the control rod is used for controlling the spraying structure to adjust the orientation, and the foam spraying direction can be freely adjusted within a certain range while the orientation of the whole device is not moved; the fire-extinguishing foam coverage range is effectively increased, and the fire-extinguishing effect is improved.

A floor nozzle assembly and systems and methods including means for generating and distributing a firefighting foam. The means generates and distributes a fluorine-free foam having an effective foam quality for total coverage over a floor area of at least 25 ft.×25 ft. at an application density of at least 0.1 GPM / SQ. FT with the floor area having a slope of 1 in: 8 ft.

A gas-driven mechanical pumping type foam fire extinguishing system is provided with a compressed gas tank, a pressure water tank, a water turbine and a foam pump, inert compressed gas is used for providing pressure, water in the water tank is pressed out, and the water turbine is driven to rotate to drive the foam pump, so that efficient and stable fire extinguishing foam is generated; the water turbine drives the foam pump, efficient and accurate foam mixing is achieved, dependence on electric power or a diesel engine is avoided, and meanwhile system complexity and energy consumption are reduced.

A method of fighting a fire, the method includes aerating a firefighting foam composition to form an aerated firefighting foam; administering the aerated firefighting foam to a fire or applying the aerated firefighting foam to a surface of a volatile flammable liquid; wherein the firefighting foam composition includes a surfactant component comprising an anionic surfactant, a zwitterionic surfactant, optionally a nonionic surfactant, or a mixture of any two or more thereof; an aliphatic alcohol-based component comprising at least two compounds selected from C8-C14-aliphatic alcohols and ethoxylates of C10-C14-aliphatic alcohols having an average of no more than about 6 ethylene oxide units; and at least about 30 wt. % water.

The present invention is directed to fluorine-free firefighting foam concentrates containing one or more solvents, one or more surfactants, one or more alcohols, and one or more biopolymers. The present invention is also directed to firefighting foam solutions and firefighting foams prepared from such concentrates and methods for their use. The present invention is also directed to methods for controlling the viscosity of firefighting foam concentrates, including lowering of the concentrate viscosity as temperature decreases.

The invention discloses an unmanned aerial vehicle fire extinguishing system. The system comprises an unmanned aerial vehicle end, a ground server end, a mixed liquid conveying pipeline and a gas conveying pipeline, wherein the mixed liquid conveying pipeline and the gas conveying pipeline are connected between the unmanned aerial vehicle end and the ground server end; the ground server is used for mixing water and the fire extinguishing foam stock solution into a mixed solution according to a preset proportion, conveying the mixed solution to the unmanned aerial vehicle end along a mixed solution conveying pipeline, and conveying air to the unmanned aerial vehicle end along an air conveying pipeline; and the unmanned aerial vehicle end is used for converging the mixed liquid and air into fire extinguishing foam and spraying the fire extinguishing foam to an ignition point. The fire extinguishing foam is formed by converging at the unmanned aerial vehicle end, so that the fire extinguishing foam in a pipeline can be prevented from being broken or compressed when the unmanned aerial vehicle conveys the fire extinguishing foam, the effective spraying distance of foam liquid at a nozzle of the unmanned aerial vehicle is guaranteed, and the preset fire extinguishing effect is further guaranteed.

This group of inventions relates to the fire suppression field, namely to devices that generate fire-extinguishing gas (a mixture of gases) by burning compositions to produce fire-extinguishing gas (a mixture of gases) without ozone depleting substances. Inventions may be used as autonomous devices to extinguish fires in conventionally sealed spaces and to make other devices using such gas or a mixture of gases to build pressure inside a reservoir (a module) to displace the fire extinguishing substance: powder, water or aqueous solutions and other compositions.The first version of the device with radial leakage of gas and the second version of the device with axial leakage of gas. In the first version of the design, the gas fire suppression device comprises a cylindrical casing with a bottom, a cover and holes for fire extinguishing gas release, a gas generating charge and a start assembly, the casing is equipped with a cassette containing a cylindrical shell, which is permeable for the gaseous combustion products, and a blind bottom. The cassette is joined to the cover and is installed so that a circular clearance is formed between the casing and the cassette, and the gas generating charge is installed inside the cassette, besides, the holes for fire extinguishing gas are placed in the cylindrical wall of the casing. The cassette is equipped with a filtering shell fixed from the outside, and the blind bottom of the cassette is made as capable of detachable connection with the cylindrical shell and is equipped with two circular ledges on the outer surface, the outer and the inner ones, besides, between the outer circular ledge of the cassette bottom and the circular ledge on the bottom there is a circular clearance arranged. Besides, a gas generating composition is proposed as used in the device.The technical result is expansion of the field of application by the option of using both in the form of fire suppression devices generating fire extinguishing gas (a mixture of gases) and designed to extinguish fires of A2, B and C class, and for the systems of fluid and powdered substances purge, as well as for activation of the sol and gel formation process when making a quick-hardening fire extinguishing foam based on foamed hydrogel of silicic acid. The additional technical result consists in enabling production of higher degree of combustion products treatment from finely dispersed phase with the simplified technology of device manufacturing and ensuring convenient operation.

The invention discloses a fluorocarbon surfactant with a hydrophobic end fluorocarbon chain oxygen atom hybridization and a hydrophilic end quaternization and a synthesis method and application thereof, the fluorocarbon surfactant has a structure shown in any one of formulas (1)-(3), # imgabs0 #, n is an integer of 1-4, n1 and n2 are integers of 3-5, m1 is an integer of 2-4, m2 is an integer of 1-4, and X is Cl, Br or I. The invention further discloses a preparation method of the fluorocarbon surfactant with the hydrophobic end fluorocarbon chain oxygen atom hybridization and the hydrophilic end quaternization. At least one of the lowest surface tension or the critical micelle concentration (CMC) of the fluorocarbon surfactant disclosed by the invention is lower than that of reported PFOS products and fluorocarbon chain hybrid substitute products of PFOS such as 6: 2 FTS, Cl-PFESA and the like. The fluorocarbon surfactant disclosed by the invention is simple in synthesis method and better in surface performance, and can be widely applied to the fields of chromium electroplating fog inhibition, aqueous film-forming fire-fighting foam, fabric three-proofing, semiconductor etching and the like.

A forest fire suppression system includes one or more satellites having a thermal imaging sensor configured to detect hot spots that are indicative of a forest fire. The satellites are further configured to transmit an alert signal to an emergency authority via a wireless network when a hot spot is detected. An unmanned aerial vehicle (UAV) is remotely controlled by an individual at the emergency authority. The UAV is configured to carry a crate filled with a plurality of fire suppression foam bombs. Each individual fire suppression foam bomb includes a housing configured to be filled with a pressurized foam material, a denotation mechanism, a microcontroller, and an outlet nozzle on the housing. Each individual fire suppression foam bomb is adapted to disperse the foam material when dropped by the UAV from above the forest fire. The system provides a cost-effective and efficient way to detect and extinguish forest fires.

The utility model belongs to the technical field of live working appliance performance detection, and particularly relates to a fire extinguishing foam conductivity detection tool which is characterized by comprising an insulating support, a live metal hanging plate frame, a compressed nitrogen foam generating device, a foam releasing device and a high-voltage transformer, and the live metal hanging plate frame comprises a rectangular frame, a metal plate, a base and an insulator; the insulating support comprises a T-shaped insulating seat, a lifting frame and a pressing plate, and a bayonet matched with the foam releasing device is arranged between the lifting frame and the pressing plate; the compressed nitrogen foam generating device is connected with the foam releasing device through a hose, and the bottom of the compressed nitrogen foam generating device is insulated; a high-voltage electrode of the high-voltage transformer is respectively connected with the metal plate, the compressed nitrogen foam generating device and the foam releasing device, and the high-voltage transformer is a 100-kilovolt transformer. The beneficial effects of the utility model are that the distance between the insulation support and the electrified metal plate rack and the detection condition are unified, and the data have repeatability and comparability; the method is suitable for batch detection.

The invention relates to fire preventing and extinguishing foam gel with shear thickening and CO indication self-healing functions in an underground coal mine goaf and a preparation method of the fire preventing and extinguishing foam gel. The foam gel comprises a reversible association rheological aid, a CO colorimetric indicator, an ion exchange type self-healing filler, a foaming agent, a foam stabilizer and a gelling agent which are dispersed in a water phase according to a specific ratio and are formed by gas mixing and foaming. The material can be instantly thickened under the condition of high-shear air leakage, so that the erosion resistance of a foam structure is improved; in the service period, when the local part is damaged and the CO concentration is increased, the bubble wall develops color to prompt and release the self-healing filler, so that the leakage point is quickly repaired, and the air tightness is recovered. The dual-function system can realize real-time monitoring and dynamic protection in a complex goaf environment, obviously prolong the service cycle and improve the sealing and oxygen isolation effects, and has the advantages of simple structure, easiness in industrialization of the preparation process and high applicability.

The utility model relates to the technical field of forest fire suppression, in particular to efficient forest fire suppression equipment which comprises a vehicle body, a box body and a transverse plate, the upper end of the outer wall of the vehicle body is fixedly connected with the box body, the right side of the upper end of the outer wall of the box body is fixedly connected with a shell through a support, and an efficient forest fire suppression structure is arranged at the lower end of the outer wall of the shell. Vertical plates are fixedly connected to the left side of the upper end of the outer wall of the transverse plate, the inner walls of the two vertical plates are movably connected with a spray head through pin shafts, and a forest fire extinguishing angle adjusting structure is arranged on the right side of the upper end of the outer wall of each vertical plate. According to the efficient forest fire extinguishing equipment, through an efficient forest fire extinguishing structure, a second motor is started to drive a rotating disc to rotate in a shell through a bearing, the rotating disc rotates to drive a cylinder to slide in a sliding groove machined in the inner wall of an incomplete gear, and the second motor finally drives a spray head to swing in a reciprocating mode to spray fire extinguishing foam to a fire extinguishing area in a large range; and the fire extinguishing efficiency is effectively improved, and higher efficiency is achieved.

The utility model relates to the technical field of waste household appliance treatment equipment, in particular to a waste refrigerator treatment line fireproof system which comprises a bottom plate, and a treatment bin is mounted at the top of the bottom plate. The oxygen sensor is used for detecting the oxygen content in the equipment at an example moment set in a program and effectively controlling the oxygen content to be below an explosion limit, and controlling the nitrogen injection amount of the nitrogen storage tank according to an oxygen content ratio so as to balance the content of combustible gas, and the flame sensor is used for detecting generation of open fire; once open fire is detected to enter a fire extinguishing process, excessive nitrogen and fire extinguishing foam are sprayed, and when a rack moves, a gear and a rotating rod are driven to rotate through a meshing relation, so that a flow dividing pipe and a spray head are driven to rotate for angle adjustment; and when fire extinguishing is needed, the spraying area of nitrogen and foam is increased through back-and-forth rotation of the flow dividing pipe and the spray head, the fire extinguishing efficiency is improved, and therefore the fire catching risk is effectively reduced through multiple technologies, and fire extinguishing is more efficient and accurate.

The present invention is generally directed to firefighting foam compositions containing a (modified or unmodified) polyethylene (PEI) polymer foam enhancer, including concentrates, solutions (e.g., foam-forming solutions), and the foams produced from the concentrates and / or solutions. Compositions of the present invention are typically fluorine- free. Compositions of the present invention are suitable for use for both Class A and Class B fires (Class A / B).

A fire extinguishing foam concentrate that is free or substantially free of fluorine-containing surfactants is disclosed. A fire extinguishing foam concentrate includes water and from 25% to 38% by weight of a surfactant blend including at least one selected cationic quaternary ammonium compound, at least one selected alkyl amine oxide nonionic surfactant, and at least one selected alkyl sulfate anionic surfactant. Each selected surfactant has an average alkyl or alkylene carbon chain length of from 8 to 10 carbon atoms. The fire extinguishing foam concentrate may be combined with other fire extinguishing foam components to form a fire extinguishing foam composition. Also disclosed is a fire extinguishing method comprising inflating a fire extinguishing foam composition comprising a surfactant blend to form a fire extinguishing foam that is applied to a surface of a fire or a volatile flammable liquid.

A firefighting foam concentrate that is free or substantially free of fluorosurfactants is disclosed. The firefighting foam concentrate comprises water and from 25% to 38% by weight of a surfactant blend comprising at least one selected cationic quaternary ammonium compound, at least one selected alkyl amine oxide nonionic surfactant, and at least one selected alkyl sulfate anionic surfactant. Each selected surfactant has an average alkyl or alkylene carbon chain length of 8-10 carbon atoms. The firefighting foam concentrate may be combined with other firefighting foam components to form a firefighting foam composition. Also disclosed is a method of fighting a fire comprising aerating the firefighting foam composition containing the surfactant blend to form a firefighting foam that is applied to a fire or the surface of a volatile flammable liquid.

The invention discloses a fire extinguishing explosion-proof device and a foam generating front end thereof, the foam generating front end comprises a shell with a cavity, the foam generating front end is provided with a foam spraying channel, a first liquid input channel and a first gas input channel, and valves are assembled in the first liquid input channel and the first gas input channel; a foaming net dividing the cavity into a mixing chamber and a foaming chamber is assembled in the shell, the foaming chamber is communicated with the foam spraying channel, and the mixing chamber is communicated with the first liquid input channel and the first gas input channel. The gas-liquid mixture is mixed for multiple times by utilizing the primary mixing inner cabin, the primary mixing outer cabin, the secondary mixing cabin and the tertiary mixing cabin before foaming, the gas-liquid mixing effect is enhanced, the foaming rate and the foam fire extinguishing effect are improved, different types of fire extinguishing foams can be generated, and different fire extinguishing modes are matched, so that the fire extinguishing effect is improved. The system can be suitable for different types of fire scenes in an energy storage battery thermal safety management system, and the functions of the system are enriched.