21 results about "Firefighting foam" patented technology

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.

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.

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 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.

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.

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 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 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.

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.

An apparatus, system, and method for firefighting foam in a bag is disclosed. A firefighting foam in a bag system includes a firefighting foam in a bag apparatus. The apparatus comprises an outer container configured to provide structural support and protection, an internal collapsible bag disposed within the outer container to store foam concentrate and collapse as the concentrate is dispensed, and a connection mechanism for detachably securing the internal collapsible bag within the outer container. The system further includes a foam proportioning device configured to mix the foam concentrate from the internal collapsible bag with water to create a foam solution, operatively connected to both the internal collapsible bag and a water supply. Additionally, the system includes a discharge device configured to apply the foam solution to a fire-affected area, operatively coupled to the foam proportioning device.

The invention discloses a multiphase synergistic foam conductivity dynamic test system and method. The system comprises a test device, a data collector unit and a control unit, the testing device comprises a battery box pack, a foam conveying system and a conductivity probe, a plurality of branch pipe openings used for conductivity testing are formed in the top and the outer side face of the battery box pack, and the conductivity probe can enter the battery box pack from the branch pipe openings to detect the change condition of the conductivity in the box; detection positions are arranged among a plurality of battery modules in the battery box pack, n detection positions are arranged in the vertical direction of a plurality of battery cells in each module, and detection positions are arranged on the front face, the back face and the side face of each battery cell. According to the invention, conductivity change data of the multiphase synergistic foam at different positions and at different times in the battery pack box can be accurately obtained, a scientific basis is provided for fire extinguishing safety evaluation of the fire extinguishing foam, the system structure is simple and reliable, and measurement position selection is scientific.

A fire-fighting composition and method of manufacture of the same has been disclosed herewith. The composition comprises a natural gum, glycol ether, sodium lauryl sulfate, other anionic surfactant(s), non-ionic surfactant(s), and many other propriety components. The resultant composition passed in-house tests—measuring cylinder test, torch test and hot heptane test. The composition does not contain any fluorinated surfactant or compounds. When diluted at 3% concentration, the solution produces satisfactory quantity of foam under pressure to extinguish fire.

The present invention is generally directed to fluorine-free firefighting foam concentrates containing a surfactant component comprising one or more surfactants, optionally one or more solvents, optionally one or more inorganic salts, and optionally one or more organic salts. The present invention is also directed to firefighting foam solutions and firefighting foams prepared from such concentrates and methods for their use. The fluorine-free firefighting foam concentrates exhibit Newtonian behavior. The fluorine-free firefighting foam solution exhibits dilution thickening properties.

According to the medium-expansion foam gun and the movable foam fire extinguishing device provided by the utility model, the thick neck part, the gradual change part and the thin neck part are arranged in the medium-expansion foam gun, and the foam liquid self-suction port is communicated with the thin neck part, so that when water flows through the thin neck part, fire extinguishing foam liquid is automatically sucked, and the purposes of self-suction of foam and fire extinguishing are achieved; the water and the fire extinguishing foam liquid are directly mixed to obtain the foam mixed solution, so that the mixing steps are reduced, and the preparation flexibility of the foam mixed solution is improved.