764 results about "Open fire" patented technology

The invention discloses a forest fire detection and disappearance method and system, and relates to the technical field of forest fire prevention and data processing, and the method comprises the steps: carrying out the fire inspection of a planned forest region through a plurality of inspection unmanned planes, and transmitting an image and airborne sensor data back to a command center in real time; identifying a fire behavior by using an artificial intelligence method, and performing fire behavior judgment and fire hazard grade division; the command center screens fire points according to the thermal images and updates the positions of the fire points in real time; the fire scene spreading trend is judged according to the returned data, and a basis is provided for the dispatching task of throwing the fire extinguishing bombs by the fire extinguishing unmanned aerial vehicle; using an MAPPO multi-agent reinforcement learning algorithm to train an optimal dynamic fire point collaborative disappearance regulation strategy; and after the open fire is extinguished, the inspection unmanned aerial vehicle continues to inspect to identify a re-ignition point or a smoke point, and secondary large-area fire is prevented. According to the method, efficient collaborative fire extinguishing, dynamic environment adaptation and resource optimization configuration can be achieved, and robustness is kept when part of intelligent agents fail.

The invention discloses an explosive environment airtight medium-voltage power transmission cable, and relates to the technical field of power cables, the explosive environment airtight medium-voltage power transmission cable comprises a central conductor, the outer side of the central conductor is tightly coated with an internal conductor insulator, and the outer side of the internal conductor insulator is tightly coated with an insulated conductor shield; the outer sides of the multiple insulated conductor shields are jointly coated with a steel tape armoring, the outer side of the steel tape armoring is tightly coated with a PVC protection sleeve, and the outer side of the PVC protection sleeve is provided with an external telescopic expansion protection mechanism. A fireproof barrier is constructed on the outer side of the cable through the flame-retardant metal thin net, it is ensured that combustible gas outside the cable cannot be ignited even if open fire appears in the cable, the overall fireproof and explosion-proof performance of the cable is further effectively improved, and meanwhile the outer diameter of a fault position is actively increased, so that the service life of the cable is prolonged. A high-voltage breakdown protection layer in the cable is prevented from igniting external combustible gas, and the overall protection performance of the cable is improved.

The invention provides a combustible gas leakage protection system, which is characterized in that a control module of the combustible gas leakage protection system judges whether the concentration of combustible gas is lower than a first concentration threshold value or not when receiving concentration information detected by a concentration detection module, and generates a first control instruction when the concentration of the combustible gas is not lower than the first concentration threshold value. The control module further generates a second control instruction when the combustible gas concentration is not lower than a second concentration threshold value and the flame detection module detects that no open fire exists, and generates a third control instruction when the combustible gas concentration is not lower than the second concentration threshold value and the open fire exists. And the protection module executes different protection actions according to different control instructions of the control module. According to the application, the response scheme is divided into three grades, and corresponding protection strategies are implemented according to the detection signals of different grades, so that the response sensitivity and accuracy when the combustible gas leaks can be remarkably improved.

The invention relates to a battery thermal management and thermal runaway protection integrated system and method, which are applied to the technical field of battery protection, and the method comprises the following steps: when an internal battery pack is over-temperature or low-temperature, carrying out cooling protection or thermal insulation protection on the battery pack through a low-boiling-point phase change working medium; when it is detected that the concentration of the internal flammable and explosive gas exceeds a preset threshold value or overtemperature occurs, the low-boiling-point phase change working medium is sprayed to the internal battery pack to dilute the concentration of the flammable and explosive gas or reduce the temperature of the battery pack; when smoke or open fire is detected inside, a low-boiling-point phase change working medium is used as a fire extinguishing medium, high-pressure flame-retardant gas is used as a driving gas source, and the external space of the battery cluster is cooled and the concentration of oxygen and flammable and explosive gas in the space is diluted through a plurality of firefighting sprayers which are connected in parallel; the problems that a battery is short-circuited easily to cause disasters due to leakage of cooling liquid of an existing liquid-cooled battery thermal management system, an existing fire safety system lags behind thermal runaway treatment, a fire extinguishing mechanism is single, reburning is easily caused and the like are solved.

The invention discloses a power distribution overhead conductor tree touch fault fire moment determination method and system, and the method comprises the following steps: building an experiment environment, and collecting whole-process data according to a preset sampling frequency in the experiment environment; obtaining the initial moisture content of the experimental tree, calculating the moisture evaporation heat absorption amount and the moisture evaporation mass of the tree model, updating the moisture content of the tree, and performing aligned storage according to time; fitting the relation of the conductivity, the moisture content and the temperature of the tree in the whole process to obtain a conductivity function; constructing a resistance simulation curve by using a conductivity function according to the moisture content and the temperature of the tree, and constructing a resistance actual measurement curve by using voltage and current data collected in an experimental environment; and comparing the resistance simulation curve with the resistance actual measurement curve, and judging the moment when the resistance simulation curve and the resistance actual measurement curve are obviously bifurcated as the moment when the open fire appears. The method is wide in application range and low in cost and maintenance difficulty, and high accuracy is guaranteed.

The invention provides a shallow coal seam hidden fire source full-field monitoring and early warning method and system, and belongs to the technical field of coal spontaneous combustion fire monitoring and early warning, and the method comprises the steps: S1, obtaining thermal infrared image and visible light image data; s2, eliminating redundant thermal imaging frames and fuzzy thermal imaging frames; s3, obtaining a preliminary surface temperature field distribution map; s4, an open fire source and a suspicious area are distinguished, and positions are marked; s5, acquiring surface temperature gradient distribution and indication gas concentration data of the suspicious area, and acquiring surface temperature data and underground temperature data of the verification point, indication gas data escaping from the detection hole and radioactive radon content data; s6, establishing identification indexes of the dark fire source; s7, establishing a dark fire source grading risk standard; and S8, outputting an early warning result. According to the method, full-time, full-field and three-dimensional monitoring is realized, the accuracy and the reliability are improved, intelligent graded early warning and decision support are realized, and the environmental adaptability and the automation level are enhanced.

The invention belongs to the technical field of unmanned aerial vehicle group control, and relates to a control method of a fire extinguishing unmanned aerial vehicle group. According to the method, a dynamic fire scene thermodynamic diagram, meteorological data and a fire scene terrain model are collected, and fire scene spreading core kinetic parameters are extracted to calculate a dynamic buffer area; and then predicting meteorological data of a buffer area, generating a combustible flammability index grid map, carrying out weighted fusion on a downsampling result of the dynamic fire scene thermodynamic diagram and the two, and constructing a dynamic fire danger intensity field in a prediction period, thereby solving the problem that multi-dimensional heterogeneous data cannot be effectively integrated in the prior art, and realizing accurate prediction of the dynamic evolution trend of the fire. Meanwhile, state data of the unmanned aerial vehicle group are collected in real time, open fire areas are divided in combination with a fire danger intensity field, reachability of the unmanned aerial vehicles is evaluated, the unmanned aerial vehicle group capable of being dispatched for the second time is screened, traditional strategy defects are overcome, resource allocation is optimized, timely intervention in key areas is ensured, and the overall fire fighting effect is improved.

The present invention belongs to the technical field of smart charging piles. Disclosed is a highly integrated smart charging pile, which aims to solve the problem whereby, when an open fire occurs in a smart charging pile, the open fire cannot be extinguished rapidly, and easily leads to the burnout of and damage to the charging pile. The highly integrated smart charging pile comprises a smart charging pile body, wherein a steel cylinder is fixed to the top of one side of the outer side wall of the smart charging pile body, and an output end of the steel cylinder passes through the smart charging pile body, and is connected to a U-shaped pipe in a penetrating manner. In the present invention, by means of a fuse wire provided therein, after the fuse wire is blown by an open fire, a movable electrical contact block can be in contact with a static electrical contact block to start an electric push rod; and by means of a gear and a rack provided therein, a valve can be opened, and carbon dioxide in the steel cylinder can then enter the U-shaped pipe and is discharged into the smart charging pile body through an exhaust hole, such that the open fire at the position where the smart charging pile body is connected to a plug connecting wire can be extinguished, thereby avoiding the situation where the charging pile is burnt and damaged when the open fire cannot be extinguished in a timely manner.

The invention discloses a lithium ion battery energy storage cabinet with a fire extinguishing function and a use method, and relates to the technical field of new energy battery energy storage, the lithium ion battery energy storage cabinet comprises a cabinet body, and a plurality of battery cabins and independent fire extinguishing agent storage tanks are arranged in the cabinet body. Through a highly integrated'early warning-fire extinguishing-cooling 'triple active safety mechanism, extremely high safety and reliability are achieved, after the fire detection unit gives out an early warning, a fire extinguishing agent is sprayed to an ignition point through a fire extinguishing agent release pipeline and a nozzle, open fire is rapidly extinguished, then the integrated cooling system works, and the fire extinguishing effect is achieved. The high-temperature battery module is continuously cooled through the atomization nozzle, the problem that a lithium ion battery is extremely prone to reburning is efficiently solved, the supercapacitor serves as a standby power source, it is ensured that the whole fire extinguishing system can still obtain instant and reliable emergency power under the extreme condition that a main power source is interrupted, and then the fire risk and secondary damage are reduced; and a solid foundation is provided for large-scale safe application of energy storage of the lithium ion battery.

The invention discloses a preparation method of a smokeless flame-retardant fire blanket, and relates to the field of fire-fighting facilities, and the smokeless flame-retardant fire blanket is formed by compounding a surface layer, a middle layer and an inner layer; the preparation method of the smokeless flame-retardant fire blanket comprises the following steps: S1, preparing the surface layer: mixing the high-temperature-resistant silicone rubber with the solvent, the curing agent, the filler and the auxiliary agent, and uniformly stirring to form a silicone rubber coating solution; the high-temperature-resistant silicone rubber coating and the glass fibers are used as base materials, the inner layer is the macromolecular fire extinguishing material coating and has excellent fire extinguishing, heat insulating and high-temperature-resistant performance, the product is coated with multiple organic high-temperature-resistant silicone rubber, so that the organic high-temperature-resistant silicone rubber is tightly attached to the surfaces of the glass fibers, and a high-strength composite protective layer is formed; and a special polymer fire extinguishing material coating is further applied, and when exposed to open fire, the functional coating can quickly generate thermal decomposition reaction, release non-combustible gas and effectively reduce local oxygen concentration, so that the flame-retardant and fire-extinguishing effects are realized.

The invention relates to the technical field of image processing, in particular to a fire early warning method based on video analysis, and the method comprises the steps: obtaining images containing open fire and smog and wind speed data in various scenes, constructing a data set, training a fire recognition network, and marking the open fire and smog in the current frame image; calculating the flame intensity by using the size of a flame target frame extracted by the fire identification network and the gray value of pixel points in the target frame; combining the smoke target frame, the flame intensity and the wind speed data to determine the smoke diffusion degree of the scene corresponding to the current frame image; the fire possibility is evaluated by analyzing the variation trend of the flame intensity degree and the smoke diffusion degree, and whether a fire alarm is given or not is judged. The fire behavior is comprehensively judged through the size and position change of the flame target frame and the area and diffusion degree of the smoke target frame in combination with the wind speed data, false alarms are reduced, and the detection accuracy is improved.

The utility model discloses a nano silicon powder plasma preparation system, relates to the field of nano silicon powder preparation, and solves the problems of low preparation efficiency and low practicability due to the fact that an existing device needs to use open fire to heat up, and adopts the following scheme that the nano silicon powder plasma preparation system comprises a spheroidizing furnace body, a plasma torch system and a feeding system are fixedly mounted at the top of the spheroidizing furnace body, and a receiving system is fixedly mounted at the bottom of the spheroidizing furnace body; the plasma torch system is composed of three torches inclining inwards in the same direction. A main body of the feeding system is a spiral feeder, and the tail end of the spiral feeder is fixedly connected to a trough in the top of the spheroidizing furnace body; a main body of the material receiving system is a ceramic filter; according to the nano silicon powder plasma preparation system, through the arrangement of the device, electric energy can be directly converted into fluid heat energy by utilizing a plasma torch system, convection heat exchange is carried out through plasma high-temperature flame flow and high-melting-point particles, the surfaces of the particles are melted, and the technology that the particles have regular spheres is achieved.

The invention discloses a flame-retardant functional diaphragm and a preparation method thereof, and relates to the technical field of lithium batteries. The flame-retardant functional diaphragm comprises a diaphragm base material and a flame-retardant ceramic coating arranged on one side of the diaphragm base material, the flame-retardant ceramic coating is obtained by coating and drying flame-retardant ceramic slurry, and the thickness of the flame-retardant ceramic coating is 1-20 microns; the flame-retardant ceramic slurry comprises the following raw materials in parts by mass: 20-55 parts of inorganic particles, 5-30 parts of a phosphorus-based flame retardant, 5-30 parts of a nitrogen-based flame retardant, 100 parts of a solvent, 0.1-1 part of a dispersing agent, 0.2-1 part of a thickening agent, 1-3 parts of a binder and 0.1-0.5 part of a wetting agent. The high-phosphorus and high-nitrogen flame retardants are introduced and compounded into a ceramic coating system, so that the problems of rapid carbonization and fragmentation after ignition of the ceramic diaphragm are solved, and meanwhile, the effects of ignition without open fire after ignition and self-extinguishing after being away from the fire can be achieved.

The invention relates to the technical field of marine transportation safety, and discloses an AI video-based cabin smoke and open fire identification alarm system, which comprises a shipborne system and a shore-based system, the shipborne system comprises an information acquisition unit used for acquiring video, temperature difference, audio and other information of a control area; the smoke open fire and temperature difference identification unit is used for identifying smoke open fire and temperature difference appearing in the control and management area; the fire development situation evaluation unit is used for evaluating the fire development situation of the control and management area based on a fire situation development evaluation model; the shore-based system and the information acquisition unit are used for training a ship smoke open fire identification standard model and a ship fire situation development evaluation standard model; and alarm management: generating a coping decision based on the shipborne fire asking-for-help information. The defect that an existing smoke and fire sensor is low in sensitivity can be overcome, fire hazards can be found as soon as possible without dead angles, ship-shore linkage scientific rescue can be carried out in time, and ship fire prevention and shore-based rescue efficiency is improved.

A multifunctional instrument protection box for electrical engineering comprises a box body, a box door, an anti-collision mechanism, a fire extinguishing mechanism and a dust removal mechanism. The electrical engineering instrument is located in the box body and is fixedly connected with a bottom plate of the box body. The anti-collision mechanism is positioned among double-layer plate bodies of a top plate, a left side plate, a right side plate and a rear side plate of the box body; the fire extinguishing mechanism is located above the electrical engineering instrument. The dust removal mechanism is located outside the heat dissipation opening of the box body. The anti-collision function is added, the external force impact resistance of the protection box can be effectively improved, and the damage probability of electrical instrument equipment under external force impact is reduced; a fire extinguishing function is added, once fire is triggered by high temperature, short circuit and the like in the protection box, automatic fire extinguishing can be implemented in the protection box in the first time, open fire is extinguished in the shortest time, and damage of the fire to electrical engineering instruments and equipment is blocked; a dust removal function is added, accumulated dust at the heat dissipation opening can be dynamically removed, the situation that the heat dissipation effect becomes poor due to accumulated dust blockage of the heat dissipation opening is avoided, and the probability that a fire disaster is triggered by high temperature is reduced.

The utility model relates to the technical field of power transformation boxes, in particular to a box-type transformer substation with a safe self-locking mechanism, which comprises a power transformation box, a fire alarm is arranged on the top wall in the power transformation box, partition plates are symmetrically arranged in the power transformation box, and the side walls of the partition plates are in sliding connection with air partition plates. A plurality of heat dissipation holes are formed in the side walls of the power transformation box and the partition plate, an air cylinder is installed in the power transformation box through a supporting ring, a signal is transmitted to a control panel through a fire alarm, so that an air pump is turned on, air is sucked through the input end of the air pump, then air is transmitted into the air cylinder through the output end, and a movable rod can move under transmission of the air; meanwhile, an L-shaped pull rod also moves, so that a first U-shaped insertion rod is driven to be far away from an insertion hole in a gas isolation plate, the gas isolation plate descends, heat dissipation through holes in the side wall of a partition plate are blocked, the internal space of the power transformation box is isolated from the outside, open fire is extinguished due to oxygen deficiency, and the safety protection effect is greatly improved.

The invention relates to the technical field of material compositing, and discloses a polyurethane composite insulation board with a good flame retardant effect, which comprises the steps of fireproof surface layer pretreatment, flame retardant core layer preparation, reinforced substrate layer treatment, lamination molding and post-treatment, by designing a unique three-layer composite structure and adopting a multi-component synergistic flame retardant system, the flame retardant effect is good, and the flame retardant effect is good. The heat insulation board can form a multi-stage flame-retardant barrier when encountering high temperature and open fire, the flame spreading speed is slowed down, the overall fireproof safety of the material is improved, and the durability and stability of the flame-retardant effect are enhanced through the synergistic effect of all the functional layers; through surface modification treatment on the functional reinforcing phase, the interface bonding force between the functional reinforcing phase and a polyurethane matrix is improved, so that the flame retardant and the reinforcing phase are uniformly dispersed in the matrix, and the performance defect caused by agglomeration is avoided, thereby enhancing the mechanical strength and structural integrity of the material while keeping excellent thermal insulation performance.

A distribution transformer fault automatic alarm device disclosed by the present invention comprises a pressure chamber and a buzzing assembly, a mounting rack is fixedly connected above the pressure chamber, and an alarm assembly used for flickering a warning lamp when a transformer fault occurs is arranged below the mounting rack. Through parts such as a buzzing assembly, a temperature sensor and a pressure tank, when the temperature in the transformer reaches a certain value, the temperature sensor supplies power to a piezoelectric ceramic piece through an electric wire, under the action of the piezoelectric ceramic piece, a sound production shell produces a sound alarm to warn patrol personnel, meanwhile, the interior of the transformer is cooled, oxygen is isolated, and the safety of the patrol personnel is improved. Therefore, fire hazards are eliminated, the safety risk is reduced before maintenance personnel arrive, the situation that the safety risk is increased due to continuous high temperature or open fire of the transformer is avoided, meanwhile, corresponding alarm measures are automatically taken when the fault occurs, the alarm time is prolonged forwards, and the fault deterioration risk is further reduced.

The utility model relates to a spinning box cleaning device which comprises a cleaning device body and a recovery device, one end of the cleaning device body is communicated with an assembly chamber connector at the lower end of a spinning box, and the other end of the cleaning device body is communicated with a cleaning liquid supply device. The cleaning device body is used for leading cleaning liquid in the cleaning liquid supply device into a spinning branch pipe in a spinning box through an assembly chamber connector, one end of the recycling device is connected with a metering pump base at the upper end of the spinning box, and the other end of the recycling device is communicated with a cleaning liquid recycling box. The metering pump base is communicated with the assembly chamber connector through a spinning branch pipe, and the recycling device is used for recycling cleaning liquid in the spinning box into the cleaning liquid recycling box. Glued spinning raw materials in the pipeline are dissolved through the cleaning liquid and then cleaned, and compared with the mode that the pipeline is cleaned through open fire calcination in the prior art, the pipeline cleaning device is safer, more efficient, more convenient to operate and lower in cost, and the service life of equipment is longer.

The invention belongs to the technical field of energy storage equipment, particularly relates to a combined type energy storage cabinet and an energy storage system, and aims to solve the problems that in an existing technical scheme, only a ventilation mode is adopted for heat dissipation, a battery is difficult to stably cool, and a related fire extinguishing device is not arranged in the energy storage cabinet, so that fire is difficult to extinguish in time when the battery is on fire. According to the scheme, the energy storage cabinet comprises an energy storage cabinet body, and two door plates are symmetrically hinged to one side of an opening of the energy storage cabinet body; the plurality of partition plates are arranged in the energy storage cabinet body at equal intervals; according to the technical scheme, a plurality of batteries can be cooled in a dispersed heat exchange mode, so that the batteries can operate stably, open fire can be extinguished in time when the batteries are overheated and are on fire, and therefore, in the actual use process of the technical scheme, the battery cooling device can be used for cooling the batteries, and the service life of the batteries is prolonged. The method has good stability and reliability.

The utility model relates to a flue type gas water heater with ever-burning fire, which comprises a gas water heater main body provided with a water tank, a burner, a water-gas linkage valve, a piezoelectric switch and an ever-burning fire component, the burner comprises an ignition row, and an ever-burning fire gas channel acting on the ignition row of the burner is arranged between the ever-burning fire component and the water-gas linkage valve. A gas main channel entering the burner is arranged between the water-gas linkage valve and the burner, and a liquid inlet channel is arranged between the water-gas linkage valve and the water tank. An ever-burning fire gas channel is opened through a water-gas linkage valve, and an ever-burning fire assembly generates open fire acting on an ignition row through a piezoelectric switch; the water-gas linkage valve comprises a gas valve element acting on the gas main channel, liquid enters the water tank through the liquid inlet channel and pushes the gas valve element to open the gas main channel so that gas can enter the combustor and the gas water heater without being connected with a power source, convenience and rapidness are achieved, and the requirements of remote areas or some specific areas are met.

The utility model provides an anti-spilling flow guide device of electric energy storage equipment. The anti-spilling flow guide device comprises a shell and a flow guide device, wherein an inner cavity is formed in the shell for accommodating the secondary battery, and the shell is provided with an exhaust port for communicating the inner cavity with the outside of the shell; the fluid director is arranged in the inner cavity of the shell, at least one part of the fluid director and the shell are arranged in a spaced mode, a fluid director channel extending towards the exhaust port is formed between the fluid director and the inner side wall of the shell, and the fluid director is provided with at least one fluid director blade arranged on one side corresponding to the positive electrode of the secondary battery; the guide vane is provided with an oblique angle for guiding flame or high-temperature gas generated by the secondary battery into the guide channel, so that the flame or the high-temperature gas is guided to the exhaust port and then discharged out of the shell; according to the invention, flames and high-temperature gas generated by thermal runaway of the secondary battery can be guided to the exhaust port, so that further damage caused by open fire is avoided.

The utility model provides a smoke exhaust flow guide cover, a battery and electric equipment, and relates to the technical field of battery safety. The smoke exhaust flow guide cover comprises a cover plate, a first cover body and a second cover body. Wherein the cover plate is used for being connected with a battery pack in a sealing manner, and an anti-explosion valve port for accommodating the anti-explosion valve is formed in the cover plate; the first cover bodies are connected with the cover plate and correspond to the anti-explosion valve ports one to one, first smoke outlets are formed in the first cover bodies, and the first smoke outlets and the anti-explosion valve ports are arranged in a staggered mode; the second cover body is arranged on the side, connected with the first cover body, of the cover plate and covers the first cover body, a second smoke exhaust port is formed in the second cover body, and the second smoke exhaust port and the first smoke exhaust port are arranged in a staggered mode. By using the smoke exhaust guide cover in the battery, when the battery is in thermal runaway, the exhaust direction of smoke is changed, the exhaust distance is prolonged, the resistance is increased, and the flowing speed and temperature of the smoke are reduced, so that the smoke is not easy to generate open fire with other combustibles after being exhausted, and the damage to personnel and property is reduced.

The fire blanket device for the electric vehicle charging station comprises a fireproof cloth body and a plurality of energy storage bags, the energy storage bags are arranged in the fireproof cloth body and are mutually spaced, so that a plurality of spaced bulge parts are formed in the fireproof cloth body, and openings communicating with the energy storage bags are formed in the fireproof cloth body; and a combustible layer is arranged in the energy storage bag. The multiple energy storage bags are additionally arranged in the fire blanket, combustible structures are arranged in the energy storage bags, combustion reaction can be generated under the high temperature of open fire or a heat source, and the fire blanket is essentially characterized in that consumption of oxygen around the fire blanket is accelerated, mixing of the oxygen and combustible gas generated by thermal runaway of a battery is inhibited, and the fire extinguishing and blocking effects are achieved; the method is suitable for the scene of rapid fire development of the electric vehicle charging station.

The utility model relates to the technical field of fireplace cabinets, and discloses a safety protection fireplace cabinet which comprises an equipment bottom plate, a protection cabinet is connected to the upper surface of the equipment bottom plate in an inserted mode, and a detector, a first alarm, a closing rod, a closing motor and a closing lead screw are sequentially connected to the upper surface of the protection cabinet in an inserted mode from front to back. The fireplace fire extinguishing device is reasonable in structure, clear water in the water tank is pumped through rotation of the water pump, water is sprayed into a fireplace, open fire in the fireplace can be rapidly extinguished, fire disasters caused by unattended open fire in the fireplace when people go out are avoided, and when the detector detects smoke, the first alarm gives an alarm to remind people to deal with the smoke to avoid smoke poisoning. The smoke exhaust fan on the fan pipe rotates to extract and exhaust smoke in the fireplace, the smoke is quickly exhausted to prevent the smoke from influencing the indoor air quality, two closing doors are closed to prevent the smoke from entering the inner chamber after the second alarm gives an alarm, and the smoke enters the collecting box through the collecting pump, so that the smoke is prevented from entering the indoor unconsciously to influence the health of personnel.

The utility model provides a thermal runaway protection device and a battery pack. The thermal runaway protection device is used for thermal runaway protection of the battery pack, and the battery pack comprises a first anti-explosion valve and a second anti-explosion valve. The thermal runaway protection device comprises an inflation assembly, an exhaust assembly and a control assembly. The inflation assembly is arranged on the first anti-explosion valve, is communicated with the interior of the battery pack and is used for filling inert gas into the battery pack; the exhaust assembly is arranged on the second anti-explosion valve and is communicated with the interior of the battery pack; the control assembly is electrically connected with the air inflation assembly and the air exhaust assembly and used for controlling starting and stopping of the air inflation assembly and the air exhaust assembly. According to the utility model, open fire after thermal runaway of the battery pack can be avoided, and the thermal runaway protection device has the advantages of good thermal runaway protection performance and high electrical safety.

The invention discloses an electric heating Arabic hookah, and relates to the technical field of hookah. Comprising a hookah body, the hookah body comprises a main shell, a base, a water bottle, a smoke pan support and a smoke suction pipe, a top cover is movably arranged at the top of the main shell, a control panel is arranged in the main shell, the smoke pan support is arranged in the main shell, the control panel is arranged at the bottom of the smoke pan support in a sleeving mode, and a heating pan is arranged in the smoke pan support; a circle of heating disc is arranged on the outer wall of the heating pan, and a smoke pan body is movably arranged in the heating pan. Compared with a traditional hookah heated by charcoal fire, the hookah without open fire can enter more places with strict limitation on open fire use, such as some high-grade indoor leisure places and hotel rooms, and the characteristic will attract consumers who pay attention to safety and convenience of the use environment. Compared with a traditional charcoal fire heated Arabic hookah, the Arabic hookah is distinctly compared with the traditional charcoal fire heated Arabic hookah and stands out in the market with intense competition.

The invention discloses an ignition process of a stainless steel hot continuous annealing furnace. The ignition process comprises the following steps: (1) preparing equipment, namely respectively arranging needle type gas flow regulating valves controlled by an annealing furnace control system on gas pipelines corresponding to burners in eight heating areas of an open fire heating area of the annealing furnace; (2) ignition control: (2.1) in the primary ignition process of the annealing furnace, the air amount and the gas amount of each burner in eight heating areas of an open fire heating area of the annealing furnace during ignition are given according to a formula; and (2.2) after the annealing furnace is successfully ignited for the first time, in the operation process of the annealing furnace, the air amount and the gas amount are given according to the maximum amount when all the burners in the eight heating areas of the open fire heating area of the annealing furnace are ignited again after flameout. The ignition device has the advantage of high ignition success rate.

The invention relates to the technical field of forest fire emergency disposal, in particular to a helicopter-borne forest fire automatic identifying, positioning and extinguishing method and system. The method comprises the following steps: identifying infrared suspected fire points according to meteorological conditions and a space-time weight matrix; analyzing the probability of the open fire and the smoke by using the spectral response difference of the open fire and the smoke in different wavebands; generating a high-confidence three-dimensional fire point list based on a D-S evidence theory in combination with the infrared suspected fire point, the open fire and smoke probability, the combustion intensity and the live wire intensity; constructing a multi-objective optimization model, and solving a to-be-extinguished line and a region priority list in combination with the multi-objective optimization model, fire scene topographic feature parameters, fire line spreading features and the high-confidence three-dimensional fire point list; and generating or adjusting a flight route and a fire extinguishing instruction through a model prediction control framework based on a delivery window, the high-confidence three-dimensional fire point list and the to-be-extinguished line and area priority list.

The invention discloses a sodium ion battery module grading early warning and automatic fire extinguishing system which comprises a sodium ion battery module box, an ultrasonic monitoring module, a temperature sensing self-starting aerosol and a multi-parameter coupling measurement optical fiber, and the wall of the sodium ion battery module box is provided with a one-way opening safety valve and a fire extinguishing pipeline channel. The ultrasonic monitoring module can realize early warning of abnormal data in the sodium ion battery, the temperature-sensing self-starting aerosol can realize self-starting at different temperatures, and the multi-parameter coupling measurement optical fiber can realize simultaneous measurement at multiple points. Through the design of the one-way safety valve, oxygen can be prevented from entering the sodium ion battery module box, and the probability of fire in the sodium ion battery module box is reduced; instant extinguishing of open fire is realized by self-starting temperature-sensitive aerosol, and spreading of thermal runaway of the sodium-ion battery is effectively inhibited under the assistance of a perfluorohexanone fire extinguishing agent.