30results about How to "Prevent re-ignition" patented technology

The invention relates to the technical field of fire safety, in particular to an electric bicycle shed automatic fire extinguishing device and system.The method comprises the following steps that S1, data of a plurality of fire factors are collected; s2, performing fusion analysis on various fire factor data, and outputting a fire risk judgment result; s3, dynamic fire risk assessment is carried out, and a fire early warning threshold value is adjusted in real time; s4, identifying a section where the fire occurs; s5, on the basis of the fire sections identified in the S4, automatically controlling fire extinguishing devices in the corresponding areas to be started; s6, the fire area is cooled through a water spraying device; and S7, after the fire is extinguished, storing all data to a remote cloud server. According to the electric bicycle shed, through multi-dimensional fire monitoring, intelligent algorithm dynamic evaluation and automatic control technologies, accurate fire early warning, effective fire extinguishing, continuous cooling and safety data storage are achieved, and the fire prevention and control efficiency and safety of the electric bicycle shed are remarkably improved.

The invention provides a lithium battery fire extinguishing composition as well as a preparation method and application thereof. The fire extinguishing composition provided by the invention is prepared from the following raw materials in parts by weight: 1 to 2 parts of sodium lignin sulfonate, 3 to 4 parts of amide monomers, 2 to 4 parts of acrylic acid series monomers, 1.5 to 2 parts of framework supporting materials, 2 to 3 parts of cross-linking agents and 0.2 to 0.3 part of initiators. According to the fire extinguishing composition provided by the invention, the sodium lignin sulfonate and the amide monomer rapidly expand to form a carbon chain under the action of the cross-linking agent and the initiator, and a high polymer material with a three-dimensional space structure is formed through a copolymerization reaction of the acrylate monomer, so that the mechanical property of the product is improved; the skeleton supporting material is added, so that the three-dimensional structure of the high polymer material is more stable, and the flame retardance is improved; finally, a gel material with a stable space structure can be generated, and efficient fire extinguishing can be achieved. The fire extinguishing composition is further prepared into fire extinguishing hydrogel, so that a multi-synergistic fire extinguishing effect on the lithium battery is achieved, and efficient fire extinguishing of the lithium battery can be realized.

The invention relates to an insulating flame-retardant automatic fire extinguishing paste and a preparation method thereof. The insulating flame-retardant fire extinguishing patch comprises a bottom film, an adhesive layer and an insulating flame-retardant layer, the insulating flame-retardant layer is prepared from the following components in parts by weight: 20 to 60 parts of perfluoro-2-methyl-3-pentanone microcapsules, 20 to 30 parts of polydimethylsiloxane, 0.1 to 5 parts of magnesium hydroxide, 0.1 to 5 parts of triphenyl phosphate, 0.5 to 5 parts of tributyl phosphate, 0.1 to 5 parts of tris (2-ethylhexyl) phosphate, 0.2 to 5 parts of tris (2, 3-dichloropropyl) phosphate, 0.2 to 5 parts of tetrabromobisphenol A epoxy resin, 0.5 to 3 parts of antimony trioxide and 0.1 to 5 parts of borate. 0.1 to 5 parts of dichlorobromomethane and 0.1 to 5 parts of trichlorobromomethane. The insulating flame-retardant fire extinguishing paste is easy to install, does not need maintenance, actively extinguishes fire when a fire occurs in the initial stage, can achieve the effect of multiple times of fire extinguishing, can effectively prevent reburning and fire expansion, and is safe, green and environmentally friendly.

The invention provides a lithium battery two-component fire extinguishing agent and a fire extinguishing composition adopted by the lithium battery two-component fire extinguishing agent. The fire extinguishing composition provided by the invention is prepared from the following raw materials in parts by weight: 1 to 2 parts of guar gum, 2 to 3 parts of polyvinyl alcohol, 3 to 4 parts of acrylamide, 2 to 3 parts of methacrylic acid, 1.5 to 2 parts of a framework supporting material, 1.3 to 2.5 parts of a cross-linking agent and 0.2 to 0.3 part of an initiator. The fire extinguishing composition provided by the invention has a stable three-dimensional structure, evaporation of water in the structure can adsorb a large amount of heat, and the heat is attached to the surface of a battery to form carbon deposition along with reduction of the evaporation volume of the water, so that the effects of isolating air and obstructing combustion are achieved, the flame retardance can be improved, and re-combustion can be prevented; the high polymer consumes combustible gas in the process of burning and heating to form carbon, so that the burning reaction is prevented. The fire extinguishing hydrogel or the double-component fire extinguishing agent comprising the water-based component and the hydrogel component can be prepared from the water-based fire extinguishing agent, and the water-based fire extinguishing agent and the hydrogel component have multiple synergistic fire extinguishing effects on the lithium battery, so that efficient fire extinguishing of the lithium battery is realized.

A relay includes a contact cavity, a contact assembly, a breaking assembly, and a retaining member. The contact cavity includes a yoke plate. The contact assembly includes a stationary contact and a movable member, the movable member including a movable contact and a push rod member, the movable contact mounted on the push rod member, the push rod member movable relative to the yoke plate to move the movable contact to contact or separate from the stationary contact, the movable contact and the stationary contact being capable of forming at least one conduction path when the movable contact contacts the stationary contact. The breaking assembly includes an impactor, the breaking assembly configured to release the impactor in response to an activation signal to impact the movable member to break at least one of the at least one conduction path. The retaining member is connected to one of the yoke plate and the push rod member, the retaining member configured to cooperate with the other of the yoke plate and the push rod member to retain the push rod member at a predetermined position when the breaking assembly breaks at least one of the at least one conduction path.

The invention relates to the technical field of intelligent fire rescue, and discloses a small self-sensing intelligent special vehicle and a control method.The small self-sensing intelligent special vehicle is characterized in that a plurality of supporting foot devices are connected to the outer side face of a lower bottom plate, a gearbox is connected to the terminal of the top of the lower bottom plate, plunger pumps are connected to the output ends of the gearbox, and the number of the plunger pumps corresponds to that of the supporting foot devices; the top of the upper top plate is connected with a recognition device, and a spraying device corresponding to the fire extinguishing agent storage box is arranged at the front end of the top of the upper top plate; one side of the top end of the middle plate is connected with a fire extinguishing agent storage box, and the middle end of the top face of the middle plate is connected with a steering assembly. According to the device, the change of a fire source can be recognized in time in a complex environment, and accurate and effective fire extinguishing measures are taken. According to the device, a brand new thought and method are brought to forest fire fighting, the fire source checking and extinguishing efficiency is improved, secondary reburning of the fire is avoided, and the overall safety and emergency response capacity of fire fighting operation are improved.

The utility model relates to a battery charging and swapping cabin communicated type automatic fire extinguishing battery charging and swapping cabinet, which comprises a battery charging and swapping cabinet body, a fire extinguishing device, a controller and a detector capable of detecting fire behavior, the interior of the battery charging and swapping cabinet body is divided into a top independent space and a bottom independent space by a partition plate, and the battery charging and swapping cabinet body is divided into an equipment cabin and a plurality of battery charging and swapping cabins by partition plates; the plurality of charging and swapping cabins are longitudinally arranged, a clearance space is reserved between every two longitudinally arranged charging and swapping cabins, a fire extinguishing agent spraying opening of the fire extinguishing device faces the interior of the clearance space, the clearance space is communicated with the interiors of the adjacent charging and swapping cabins, and the detectors are installed in the charging and swapping cabins and / or the clearance spaces. The controller is in signal connection with the fire extinguishing device and the detector to form a control feedback circuit; through a space structure formed through separation of the pore plates in the charging and battery replacing cabinet, the cabinet body can be rapidly submerged by a gas fire extinguishing agent, and the fire extinguishing efficiency can be guaranteed while the equipment cost is reduced under the condition that the number of spray heads and line pipes is reduced.

The invention discloses a fire extinguishing agent special for a lithium ion battery fire as well as a preparation method and application thereof, and belongs to the technical field of lithium ion battery fire extinguishing agents. The main component of the special fire extinguishing agent for the lithium ion battery fire comprises a 16F fluorocarbon, and a preparation method of the 16F fluorocarbon comprises the following steps: (1) fluorination reaction: mixing cyclohexanone, silver fluoride and a catalyst, and reacting under the protection of ice bath and inert gas; (2) epoxidation reaction: adding the suprapoeia acid salt and silver metal particles, heating in a water bath, and fully reacting; and (3) further fluorination: taking the obtained product as a raw material, repeating the steps (1) and (2), and then purifying to obtain the product. The preparation method has the beneficial effects that the obtained C8F16O fluorocarbon has excellent high insulation performance, and does not cause short circuit or other electrical faults; a large amount of heat can be quickly absorbed, and the fire source temperature is effectively reduced. Due to the characteristic, the fire extinguishing efficiency is improved, and the heat radiation influence of a fire disaster on the surrounding environment is reduced.

This utility model belongs to the technical field of fire-fighting equipment, and particularly relates to a multi-functional foam gun. It includes a first gun body, a primary foaming tube, a connector assembly, a secondary foaming tube, and a foam net holder. The primary foaming tube is installed at the front end of the first gun body, and the secondary foaming tube is installed at the front end of the primary foaming tube via the connector assembly. The foam net holder is installed at the outlet of the secondary foaming tube. The outer wall of the primary foaming tube is surrounded by several first suction holes, which are perpendicular to the central axis of the primary foaming tube. The outer wall of the secondary foaming tube is surrounded by several second suction holes, which are parallel to the central axis of the secondary foaming tube. This utility model uses a secondary negative pressure suction method combined with a foam net to achieve a final foaming ratio of 20 times for the foam extinguishing agent. In this state, the foam extinguishing agent has a low water content, low impact force, and short range, making it suitable for close-range coverage of fire sources, effectively extinguishing fires and preventing reignition.

This utility model discloses a fire suppression device for a nickel-metal hydride (NiMH) battery box under a train, including a box for housing the NiMH battery and a multi-parameter detector and a fire extinguishing device disposed within the box. The wiring terminals of the NiMH battery are located on the top of the NiMH battery body. The multi-parameter detector includes a housing and a smoke detector, a temperature detector, an H2 detector, and a CO detector located within the housing. The housing is fixed to the inner wall of the top plate of the box and is positioned facing the wiring terminals of the NiMH battery. The nozzle of the fire extinguishing device is positioned facing the NiMH battery. This utility model also provides a fire suppression system for a NiMH battery box under a train, including the aforementioned fire suppression device for a NiMH battery box under a train. By adopting the above technical solution and using a multi-parameter detector, the accuracy and response speed of early fire identification are significantly improved.

The invention belongs to the field of gas meter protection, and is an automatic fire extinguishing gas meter box. The automatic fire extinguishing gas meter box includes a shell, an exhaust port is fixedly provided on the upper side of the shell, a gas inlet is fixedly provided on the upper side of the shell, a gas outlet is fixedly provided on the lower side of the shell, a meter box cavity is provided in the shell, two rotating seats are fixedly provided on the front right side of the meter box cavity, and a box door is rotatably provided on the front side of the meter box cavity. When the gas meter catches fire due to gas leakage or other unexpected circumstances, the present invention automatically detects and uses dry powder to extinguish the fire on the gas meter. Dry powder is the most effective gas-related fire extinguishing method, has a good fire extinguishing effect, and will not damage the key components of the gas meter. At the same time, the device can cool the gas pipeline to avoid re-ignition due to excessive temperature. At the same time, the residual gas in the box can be extracted to avoid harm to the human body.

The invention relates to the technical field of electrical equipment fireproof devices, in particular to a self-response passive fire extinguishing device which comprises a shell, a fire fighting module, a grating, a lead, an end cover, an air inducing component, a locking component, a triggering component, a replacing component and a dismounting component, a plurality of module grooves are longitudinally formed in the shell, the fire fighting module is arranged in the module grooves, and the grating is arranged in the module grooves. The fire-fighting module is arranged in the shell, the grid is arranged at the upper end of the shell, the leads are arranged on the two sides of the fire-fighting module, the end cover is arranged on the left side of the shell, and a temperature sensing hole is formed in the right side of each module groove. Flame-retardant gas generated by the device can be jetted to the position where a fire source easily occurs along the preset angle of the grating, rapid fire extinguishment is achieved, the multiple fire-fighting modules are arranged in the shell and matched with the trigger component and the replacement component, sequential eruption fire extinguishment can be achieved, and the situation that after-combustion occurs in the electrical cabinet, and serious economic losses and safety problems are caused is prevented.

The invention provides an explosion-proof power distribution device with oxygen exhausting and fire preventing functions, and relates to the technical field of power distribution cabinets. By arranging an oxygen exhausting structure, when a sealing plate completely covers and seals a ventilation heat dissipation groove and prevents external air from entering from the ventilation heat dissipation groove, a controller controls a first exhaust fan and a first air pipe electric control one-way valve to be opened, and the first exhaust fan and the first air pipe electric control one-way valve are opened; after the first exhaust fan is started, strong suction force is generated, air in the wiring cavity is continuously exhausted through the first exhaust pipe, then the exhausted air is conveyed to one side of the first flow conveying pipeline, meanwhile, the first air pipe electric control one-way valve is opened, a valve in the first air pipe electric control one-way valve is opened, and the air can be smoothly discharged to the outside through the second flow conveying pipeline; in this way, possible combustion-supporting air in the wiring cavity can be rapidly exhausted, the oxygen pumping and fire extinguishing effect is achieved, meanwhile, due to the fact that oxygen reduction fire extinguishing is adopted, it can be better guaranteed that equipment can be normally put into use in the follow-up process, and convenience of follow-up maintenance is improved.

The utility model discloses an automatic limit fire extinguisher head relates to fire extinguisher head technical field, an automatic limit fire extinguisher head, including valve body assembly, carrying handle and pressing handle, the carrying handle is fixed on the valve body assembly, the carrying handle and pressing handle pass through the hinge rotation connection, the top end of valve body assembly passes through the carrying handle both sides, and the pressing handle passes through the valve body assembly both sides. And a monitoring assembly is arranged on the pressing handle and located between the lifting handle and the pressing handle. According to the utility model, the safety pin is automatically limited and mounted, the manual mode of manually mounting the safety pin is replaced, and the safety pin automatically cancels the limit when people who cannot use the safety pin have a fire disaster, so that a fire extinguisher can be normally used, the fire can be quickly extinguished in the first time, and the good opportunity of fire fighting cannot be missed; in addition, a traditional mode of manually cancelling the limit of the safety pin is reserved to adapt to people who know to operate the safety pin, so that the limit of the safety pin can be cancelled without a driving assembly, and the adaptability of the safety pin is improved.

The invention discloses a special fire extinguishing agent for a lithium battery in the technical field of fire extinguishing agents. The special fire extinguishing agent comprises the following components in parts by weight: 95.5-65 parts of deionized water; 0.08 to 0.25 part of a thickening agent; 0.04 to 0.06 part of a surfactant; 2-4 parts of a flame retardant; 5-20 parts of an anti-freezing agent; 0.2 to 0.25 part of a stabilizing agent; 0.25 to 0.4 part of a penetrating agent; the technical problem that in the prior art, the fire extinguishing effect is poor when a fire extinguishing agent deals with a lithium battery fire is solved, and the technical effect that the fire extinguishing agent is suitable for various fire extinguishing equipment, so that fire extinguishing can be conducted according to fire of lithium batteries of different structures is achieved.

The utility model discloses an active fire-fighting explosion-proof backup power supply cabinet with a rapidly detachable battery box. The active fire-fighting explosion-proof backup power supply cabinet comprises a cabinet body, a cabinet door, a battery pack, a detector, a battery management unit, an alarm device and a high-pressure water mist fire extinguishing device, the cabinet door is hinged to the cabinet body; the one or more battery packs are detachably fixed on the battery rack in the cabinet body through buckles; the one or more detectors are arranged in the cabinet body; the battery management unit is arranged in the cabinet body, and the one or more detectors are respectively connected with the battery management unit through communication wire harnesses; the alarm device is embedded in the outer wall of the cabinet door and is also connected with the battery management unit through the communication wire harness; and the high-pressure water mist fire extinguishing device is arranged outside the cabinet body. Therefore, the battery pack is used as a protection unit, the movable high-pressure water mist fire extinguishing device is arranged in the working space of the back-up power supply, when thermal runaway occurs, the battery pack can be quickly disassembled, water mist fire extinguishing is performed, and the device is simple in structure, timely in response and reasonable in cost.

The invention discloses a container type battery pack multi-stage fire-fighting structure and a fire-fighting system.The container type battery pack multi-stage fire-fighting structure comprises a box body, a battery module, a liquid cooling unit, a dehumidifier, a confluence cabinet, a fire-fighting unit, front-section detection equipment and a smoke exhaust unit are arranged in the box body, and the fire-fighting unit comprises a fire extinguishing agent tank and a water storage tank; the fire extinguishing agent tank and the water storage tank are connected with a spraying pipeline arranged in the box body through valves, the front-section detection equipment comprises gas detection, temperature detection and smoke alarm, and the front-section detection equipment is connected with a fire fighting unit through a control host. The structure design is reasonable and ingenious, the environment in the box body is detected through the front-section detection equipment, temperature, gas and smoke concentration are subjected to multi-stage early warning, and when early warning is triggered, the control host controls the fire fighting unit to open the fire extinguishing agent tank or the water storage tank according to logic judgment and spray the battery module in the box body for multiple times, so that the fire extinguishing effect is improved. Fire reburning is avoided, and complete fire extinguishing is achieved.

The utility model provides an excitation fuse, a battery pack and electric equipment. Relates to the technical field of circuit protection. The excitation fuse comprises a shell, an excitation cut-off assembly, a conductor and a melt. An accommodating cavity is formed in the shell; the excitation cutting-off assembly is located in the containing cavity and provided with a cutting-off end. Part of the conductor is positioned in the accommodating cavity; the melt is located in the containing cavity and connected with the conductor in parallel. The melt is provided with a melt breaking part, and the melt breaking part is opposite to the cut-off end. The cut-off end is used for sequentially cutting off the conductor and the fuse breaking part. A first arc extinguishing cavity is further formed in the shell, the first arc extinguishing cavity is filled with a first insulating medium, and the fuse breaking part is located in the first arc extinguishing cavity. According to the excitation fuse provided by the embodiment of the invention, the arc extinguishing efficiency is improved, the safety and reliability of the whole excitation fuse are improved, and the safety of a battery pack and electric equipment is improved.

The invention relates to the technical field of fire extinguishing agents, in particular to the field of IPC A62D1, and more particularly relates to an in-situ flame-retardant fire extinguishing patch and a preparation method thereof. The preparation raw materials comprise a flame-retardant and fire-extinguishing microcapsule and matrix resin. The flame-retardant and fire-extinguishing microcapsules with the explosion temperature of 60-220 DEG C are selected, so that the fire extinguishing efficiency can be improved; melamine resin is selected as matrix resin, a flame retardant does not need to be additionally added, and meanwhile the reburning phenomenon after flame retardance can be avoided. The content of the flame-retardant and fire-extinguishing microcapsules in the patch is 50-75wt%, so that the flame-retardant property of the patch can be prevented from being reduced after multiple times of fire extinguishment.

The invention relates to the field of mobile phone battery detection, in particular to multifunctional performance detection equipment for a mobile phone battery and a method thereof. A multifunctional performance detection device for a mobile phone battery comprises a console, a protective shell and the like. A protective shell is fixedly connected to the control table. The first connecting rope is pressed on the battery body, and the second connecting rope clamps and limits the side surface of the battery body, so that the battery bodies with different shapes in the prior art can be effectively limited and fixed, and the situation that the stability of the battery cannot be kept, the battery body is subsequently pressed, and the battery body is damaged is avoided. The stress limit of the battery cannot be accurately measured, the actual use limitation is large, then the detection column is in contact with the flat cable contact of the battery body, the charging and discharging characteristic test of the fast charging performance and the discharging curve of the battery body and the safety test of overcharging protection, overdischarging protection and the like are achieved, the test process is continuously carried out, the detection efficiency is high, and the reliability is high. And the time required for complete detection of the battery body is effectively saved.

The invention discloses a fire extinguishing agent for a battery. The fire extinguishing agent comprises the following raw materials: perfluoride, nano silicon dioxide, a supramolecular suspension stabilizer and a hyperdispersant. The specific formula comprises the following raw materials: 85 parts of perfluoride, 11 parts of nano silicon dioxide, 2 parts of a supramolecular suspension stabilizer and 2 parts of a hyperdispersant. The adsorption capacity of silicon dioxide is high, harmful gas and free radicals in battery fire disasters are better adsorbed, further development of the fire disasters is prevented, the fire extinguishing agent has good environment-friendly performance, the perfluoride fire extinguishing agent and nano silicon dioxide are environment-friendly materials and do not cause harm to the environment and human health, and in the using process, the perfluoride fire extinguishing agent and nano silicon dioxide are environmentally-friendly materials and do not cause harm to the environment and human health. The fire extinguishing agent can be rapidly vaporized, residues are not left, the influence on the environment is reduced, the fire extinguishing agent can be used for various types of battery fires including lithium batteries, lead-acid batteries, nickel-metal hydride batteries and the like, the fire extinguishing agent can rapidly extinguish the battery fires, a protective layer is formed, and the batteries are prevented from being burnt again.

A kind of new energy vehicle quick fire extinguishing device of rotary telescopic, including rotary telescopic fire extinguishing cover device, the fire extinguishing cover device includes flame-retardant fabric, flame-retardant fabric inside cladding connection rotary telescopic framework, the rotary telescopic framework is hollow pipe structure, hollow pipe structure connects fire water spray head and fire water connector, the surface of the flame-retardant fabric is provided with pressure relief skylight, the bottom of the fire extinguishing cover device is provided with water-blocking fence around new energy vehicle, water-blocking fence and new energy vehicle between the fire water that accumulates fire water spray head sprays forms water pool and soaks new energy vehicle.The utility model new energy vehicle quick fire extinguishing device of rotary telescopic is through fire extinguishing cover device on the basis of portable and fast cladding entire car realizes air insulation, then telescopic framework multi-angle injection fire extinguishing, and water-blocking fence forms the soaking fire extinguishing performance to car, finally pressure relief skylight prevents the explosion risk caused by gas accumulation.

The invention relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle control method based on emergency events in a chemical industry park, and the method comprises the steps: generating a three-dimensional temperature field image through the cooperation of a thermal imaging camera, a close-range camera and a three-dimensional laser camera of a fire-fighting unmanned aerial vehicle; reconstructing flame in the three-dimensional temperature field image through a flame convolutional neural network model to generate a flame three-dimensional slice; determining a fire extinguishing stage according to the flame three-dimensional slice; according to the fire extinguishing stage, the fire extinguishing agent type, the foam multiple and the throwing tracking position of the fire extinguishing agent foam echelon superposition throwing strategy executed by the fire-fighting unmanned aerial vehicle are determined; and control parameters, communication laser wavelength and energy transfer laser wavelength of a laser communication energy transfer system of the fire-fighting unmanned aerial vehicle are determined according to the launching tracking position and the flame three-dimensional slice. The fire-fighting unmanned aerial vehicle can automatically execute fire extinguishing agent foam echelon superposition throwing, it is guaranteed that the fire-fighting unmanned aerial vehicle can rapidly reduce the fire scene temperature of a chemical industry park, and fire expansion and reburning are prevented.

The application discloses a multi-dose multi-scene intelligent mobile fire extinguishing device and a disposal method, relates to the technical field of fire-fighting equipment, and aims to solve the problems of limited coverage, single medium, low monitoring precision, poor scene adaptation and insufficient intelligent linkage of existing fire-fighting equipment. The device comprises a rigid-flexible modular combined track, a mobile fire extinguishing host, a multi-dose storage system, an anti-shielding monitoring mechanism, a power supply protection system and an intelligent control module, integrates three types of core fire extinguishing media, and is adapted to eight typical fire scene scenarios. The method is based on a multi-parameter fusion algorithm, realizes fire condition grading identification, multi-dose accurate selection and full-chain closed-loop disposal. The recrudescence inhibition rate of the application is greater than or equal to 99%, and the average response time is less than or equal to 15 seconds. The application has the advantages of modular structure, strong adaptability, convenient operation and maintenance, effectively solves the problems of poor universality and low disposal efficiency of existing equipment, and provides reliable technical support for fire safety in multiple fields.

The application belongs to the technical field of fire monitoring, and discloses a thermal power plant fire extinguishing method, device, equipment and storage medium. The method comprises the following steps: collecting infrared thermal imaging of a target area; generating a binary image based on the infrared thermal imaging; performing fire detection based on the binary image; after detecting that a fire has occurred, determining a fire source type and a fire area according to the infrared thermal imaging; and performing an extinguishing operation based on the fire source type and the fire area. In the above manner, after detecting that a fire has occurred, the fire source type and the fire area can be accurately identified, and then the extinguishing operation is performed. The fire can be effectively extinguished based on the identified fire source type and fire area, so that the fire is prevented from rekindling.

The application discloses a gravity-assisted submerged water fire extinguishing system for battery replacement cabinet and a control method, and belongs to the technical field of fire safety of battery replacement cabinet, which comprises a battery replacement cabinet, a water storage tank, a battery compartment, a fire-fighting pipeline and an internal module, the water storage tank is installed on the top of the battery replacement cabinet and is higher than the battery compartment, a water outlet at the bottom is sequentially connected with a liquid level sensor one, a flow sensor and a water pump through the fire-fighting pipeline, the battery compartment is provided with a fire-fighting nozzle, a temperature sensor and a liquid level sensor two, and the top is provided with a water overflow outlet and / or a steam outlet, the internal module comprises a fire-fighting control panel and a central control panel, the fire-fighting control panel is electrically connected with each sensor and water pump and communicates with the central control panel, and the system control method comprises the steps of system initialization, nozzle self-explosion, signal detection, fire determination, pressure boosting water injection and water level control. The application adopts a water supply mode combining gravity self-flow and water pump pressure boosting, realizes rapid submerged fire extinguishing when the battery is out of control, reduces the false alarm rate and improves the fire-fighting reliability of the battery replacement cabinet.

The invention relates to the technical field of fire fighting systems, in particular to a superfine water mist fire retardance and explosion suppression device, a fire retardance and explosion suppression method and a fire retardance and explosion suppression system. The superfine water mist fire retardance and explosion suppression device comprises a high-pressure airflow injection unit, a water mist spraying unit, a high-pressure water flow injection unit and a charging unit. The water mist spraying unit is arranged on the high-pressure airflow injection unit and is connected with the air outlet end of the high-pressure airflow injection unit; the water outlet end of the high-pressure water flow injection unit extends to be arranged in the high-pressure air flow injection unit and is connected with the water mist spraying unit; the charge unit is arranged on the high-pressure airflow injection unit and externally connected with high-voltage alternating current, and the charge unit is used for applying high-voltage charges to the superfine water mist sprayed by the water mist spraying unit. According to the invention, the superfine water mist with smaller particle size can be obtained, so that the defects of the water mist in the prior art are overcome.

This invention discloses a battery module, a cluster-level initial thermal runaway prevention device and method, comprising: a battery cluster support with a base mounted on its bottom; battery modules, wherein several groups of battery modules are evenly spaced on the battery cluster support, and elastic connectors are mounted on the outer side of the battery modules; a tensile force detection module mounted on one of the elastic connectors; a pressure detection module mounted on the base; a thermal aerosol fire extinguisher, comprising a thermal aerosol generating component and a cooling component, wherein the cooling component is installed inside the battery module, and the thermal aerosol generating component is installed inside the cooling component; and a data acquisition unit connected to the tensile force detection module and the pressure detection module. This invention solves the problem of delayed early warning in traditional devices, allowing sufficient time for subsequent prevention operations and reducing the risk of further spread of thermal runaway.

The utility model relates to the technical field of batteries, in particular to a spraying immersion type energy storage battery box which comprises a battery box body, a battery module arranged in the battery box body and a module flow self-adjusting spraying mechanism, the battery module is formed by assembling a plurality of battery cells, and spraying runners are preset among the battery cells; the module flow self-adjusting spraying mechanism comprises a flow adjusting floating rod and spraying arms distributed on each battery module; the spraying arm is provided with a spraying arm liquid outlet and a spraying arm liquid inlet; the top of the flow adjusting floating rod is located in the spraying arm, and the bottom of the flow adjusting floating rod penetrates through the bottom of the spraying arm and is provided with a valve port; a variable-diameter spraying opening is fixed to the top of the flow adjusting floating rod and right faces the spraying flow channel. According to the utility model, the battery module in the battery box is directly sprayed through the flow self-adjusting spraying mechanism, and meanwhile, the device has an insulating cooling liquid spraying flow self-adjusting function and a shortest heat conduction path, so that the phenomenon of temperature stratification is effectively avoided.