24 results about "Fire propagation" patented technology

The invention discloses a transformer substation fire risk dynamic assessment method, which comprises the following steps: constructing a transformer substation digital twin model according to the live information of a transformer substation; constructing a transformer substation fire risk deduction model according to a fire propagation mechanism and the live information; and generating substation fire risk assessment information according to fire deduction information output by the substation fire risk deduction model. By adopting the transformer substation fire risk dynamic assessment method, the current data of the transformer substation can be collected and analyzed in real time to dynamically assess and predict the fire risk, the fire risk management and prevention and control level of the transformer substation is remarkably improved, and the operation requirements of the transformer substation for high reliability and high safety are met.

The invention provides a chemical industrial park fire spreading prediction method and system. The method comprises the following steps: dividing a grid chart structure of a target chemical industrial park space structure into a plurality of function partition sub-graphs; determining a fire propagation flux of a shared node in an overlapping region between every two adjacent function zone sub-graphs, converting each function zone sub-graph into a macro-scale sub-graph, and determining a fire propagation macro-situation of the target chemical industrial park; according to the fire propagation flux and the fire propagation macroscopic situation, determining a fire front edge envelope line of each area, thereby constructing a fire propagation prediction model of the target chemical industry park, inputting fire initial environment data into the fire propagation prediction model, and outputting a fire propagation prediction result. And automatically triggering a fire alarm signal of the target park according to a fire spreading prediction result. By adopting the scheme of the application, the fire spreading of the target chemical industrial park can be predicted by combining the dynamic fire interaction among the areas in the target chemical industrial park.

The invention discloses a cabin multi-dimensional fire simulation method and system for fire personnel training, and the method comprises the steps: carrying out the modeling of a cabin, generating a digital twinborn body of the cabin, carrying out the initialization, and constructing a thermal fluid dynamic field, the digital twinborn body comprises a cabin geometric structure, a combustible material distribution condition and a linkage control interface of fire fighting equipment, and the cabin geometric structure is divided into a plurality of grids; fire information is obtained in real time through a sensor arranged in a cabin and mapped to the corresponding position of the digital twinborn body, a dynamic fire evolution cognitive model used for describing dynamic fire evolution is set, and the dynamic fire evolution cognitive model comprises a thermochemical reaction potential operator and a space coupling operator of flame propagation; and simulating the combustion condition of each grid through a dynamic fire evolution cognitive model, generating a final digital twinborn body, mapping the final digital twinborn body to virtual reality equipment, and completing fire training in a cabin by a user through the virtual reality equipment.

The invention relates to the technical field of forestry fire alarm, and discloses a forestry environment monitoring system for fire alarm. An environment sensing module of the system collects multi-dimensional environment parameters of a forest region in real time by means of a distributed sensor network. The fire danger feature extraction module carries out multi-scale feature fusion on the parameters, key fire danger features are extracted, and a three-dimensional fire danger feature tensor is generated. The fire propagation deduction module constructs a fire propagation dynamic model according to the forest terrain digital elevation model and historical fire data, and inputs a fire characteristic tensor to calculate a fire diffusion rate and a direction angle. And the monitoring strategy optimization module dynamically adjusts the sampling frequency and the space density of the sensor according to the fire diffusion rate, and starts an infrared spectrum scanning mode for a high-diffusion-rate region. And the emergency response triggering module generates a multi-stage linkage control instruction set containing unmanned aerial vehicle inspection path planning and a fire barrier activation scheme when the fire diffusion rate exceeds a preset threshold value.

This application provides a method for optimizing the fire resistance design of cables in energy storage systems, comprising: obtaining flame propagation data from cable bundle laying by simulating a high-temperature thermal shock environment and collecting protective layer collaborative performance indicators to obtain initial fire resistance performance evaluation results; extracting conductor exposure risk-related features from the optimized layer structure design scheme, using a random forest algorithm to analyze potential short-circuit fire paths, and obtaining a risk prediction model; collecting multi-point fire source test feedback from the enhanced fire barrier configuration to determine the flame propagation suppression effect, and obtaining verified cable fire resistance performance indicators; deriving emergency time improvement paths from the final collaborative protection deployment scheme and obtaining actual energy storage system integration data to determine the overall fire barrier morphological stability, and obtaining complete cable design output.

The application discloses a unified probability propagation prediction method and system suitable for WUI fire, and the method comprises the following steps: constructing a unified state space and discretizing; constructing an external driving model of building layer fire propagation; constructing a building layer dynamic Bayesian network with each building as a node, parameterizing a conditional probability table of the building layer dynamic Bayesian network based on a physical driving mechanism; establishing a mapping relationship between an internal state of the building layer and an external observation category; realizing state correction and rolling prediction based on Bayesian updating; when external observation is obtained, the system state is updated based on Bayesian updating in combination with observation information, a posterior state distribution is obtained, the posterior state distribution is taken as an initial state of the next time step prediction, a rolling assimilation closed loop is formed, and finally a multi-state probability risk field of building scale evolution over time is output. The application can realize unified coupling of a landscape, a building and a flying fire, obtain state probability output over time, and can be assimilated and corrected.

The present application relates to the technical field of liquid fire experiment, more particularly, to a correction method and device for liquid fire spread speed based on ambient temperature, wherein the fuel density, surface tension coefficient and maximum temperature of surface flow are obtained, and the three unknown quantities are substituted into the expression of surface flow speed; then, the parameters of the expression are inversely solved according to the data of reference experiment, and the relationship between the liquid fire spread speed and ambient temperature is obtained, so as to realize the correction of the error caused by the difference between the ambient temperature of subsequent experiment and that of reference experiment. The whole process is fast and convenient, and the correction relationship of the present application has good correction effect after verification, which can effectively eliminate the error caused by ambient temperature and solve the problem that the liquid fire spread speed is not corrected in the prior art.

The invention discloses a flame-retardant electrolyte, an electrolyte injection process and a lithium ion battery, the flame-retardant electrolyte comprises: a basic electrolyte, the basic electrolyte comprises a lithium salt and an organic solvent; a cross-linking agent, wherein the cross-linking agent is triethylene glycol dimethacrylate; the flame retardant is 1, 3, 3, 5, 5-pentafluoro-1-ethyoxyl-cyclotriphosphazene, and the flame retardant is 1, 3, 3, 5, 5-pentafluoro-1-ethyoxyl-cyclotriphosphazene; the initiator is azodiisobutyronitrile, and the mass ratio of the initiator to the cross-linking agent is 1: (40-50). According to the flame-retardant electrolyte, through the synergistic effect of the flame retardant and the cross-linking agent, combustion free radicals can be captured to interrupt flame propagation, a three-dimensional gel network can be formed to block heat transfer, meanwhile, the lithium ion conduction efficiency and cycling stability are ensured by optimizing the ratio of the initiator to the cross-linking agent, and the balance of battery safety and electrochemical performance is achieved; and the compatibility with the existing lithium ion battery production process is good, and special equipment does not need to be additionally introduced.

The present invention relates to a thermoplastic resin composition, a method for preparing the same, and a molded article comprising the same. More specifically, the present invention relates to: a thermoplastic resin composition comprising 32.5 wt% to 49 wt% of a polymer (a), 7 wt% to 20.5 wt% of a ceramic-forming binder (b), 6.5 wt% to 20.5 wt% of a ceramic-forming metal precursor (c), 13 wt% to 37 wt% of a ceramic-forming non-metal precursor (d), and 2 wt% to 8 wt% of a flame retardant (e); methods of making the same; comprising the same. According to the present invention, the present invention has the effects of providing a thermoplastic resin composition having excellent flame retardancy and electrical insulation properties, and having excellent flame retardancy during thermal runaway by forming ceramics and retarding flame propagation at a high temperature and in the case of flame generation, thereby being capable of securing property and life safety, and having excellent flame retardancy during thermal runaway. The method is environment-friendly; methods of making the same; and a molded article including the same.

The utility model relates to screen cloth with good wear resistance, which belongs to the technical field of screen cloth and comprises a woven screen cloth layer main body, breathable meshes are formed on the woven screen cloth layer main body, breathable fireproof layers are fixedly mounted at the top and the bottom of the woven screen cloth layer main body, and the breathable fireproof layers are used for blocking flame propagation. One side of the fireproof layer is fixedly connected with a breathable sunscreen layer used for resisting ultraviolet rays, one side of the breathable sunscreen layer is fixedly provided with a double-layer wear-resisting layer used for resisting wear, the breathable fireproof layer comprises woven fireproof surface layers, and the woven fireproof surface layers are fixedly installed at the top and the bottom of the woven mesh cloth layer body respectively; the woven fireproof surface layer is provided with first ventilation holes, the first ventilation holes correspond to the ventilation mesh holes, the bottom and the top of the woven fireproof surface layer are both coated with flame-retardant coating, and the mesh cloth with the good wear resistance has the advantages of being good in wear resistance, capable of blocking sun and fire and high in practicability.

The invention discloses a multipoint forest fire fault propagation blocking method, device and equipment and a medium, and relates to the field of power system safety protection. The method comprises the following steps: constructing a system model of propagation of multi-point mountain fire in a physical layer and an information layer of a power grid based on physical layer fire propagation, information layer control failure and a cross-layer feedback mechanism; a forest fire is used as an attacker, a power grid operation and maintenance party is used as a defense party, and a defense-attack-recovery three-stage game model is constructed based on the game theory; based on the system model and the three-stage game model, game optimization is carried out by adopting a reinforcement learning optimization method with the minimum load loss as the target of a defense party and the maximum load loss as the target of an attack party, and optimal attack and defense resource configuration is obtained; and under the optimal attack and defense resource configuration, performing traversal repair on the broken power transmission line based on the recovery resource and the recovery budget. Multi-point forest fire fault propagation in the whole process from prevention to recovery can be effectively blocked, and the overall toughness of the system is improved.

The present disclosure relates to a photovoltaic array fire spreading blocking device, comprising: a frame body and a blocking component; the frame body has mounting positions for connecting photovoltaic arrays, and each photovoltaic array is provided with at least one frame body along any edge thereof; wherein when the number of photovoltaic arrays is one or more non-continuous laying and there is a channel between two adjacent photovoltaic arrays, the blocking component comprises a first blocking piece and a third blocking piece; when the number of photovoltaic arrays is multiple and continuous laying, the blocking component comprises a first blocking piece, a second blocking piece, a third blocking piece and a fourth blocking piece; the blocking device can block a plurality of photovoltaic arrays, to a certain extent, slow down the flame spreading speed when a certain photovoltaic array catches fire, and provide time support for personnel to take fire-fighting measures.

The invention relates to a supporting composite material for a low-temperature storage tank and a forming method thereof, the supporting composite material comprises a composite material laminated wood body and a flame-retardant fireproof layer arranged on the surface of the composite material laminated wood body, and the composite material laminated wood body is composed of the following components in parts by weight: 100 parts of epoxy resin, 30-60 parts of a curing agent and 100-200 parts of glass fiber; the flame-retardant fireproof layer is prepared from the following components in parts by weight: 100 parts of epoxy resin, 30 to 60 parts of curing agent, 80 to 150 parts of glass fiber, 10 to 50 parts of inorganic filler and 5 to 10 parts of thermal insulation material. During use, the flame-retardant fireproof layers are manually coated on the two sides of the composite material laminated wood body, so that the surface flame spreading rate of a supporting composite material reaches 6, flame spreading is effectively prevented, the fire resistance is improved, and the composite material laminated wood body can keep mechanical strength and does not deform in structure for a long time under the conditions of high temperature and flame; and longer rescue and fire prevention time is won for the low-temperature storage tank, and the safety is improved.

To provide battery thermal management members and systems which have durability, handleability, resistance to heat propagation and fire propagation, and favorable properties for compressibility, compressional resilience, and compliance.SOLUTION: A battery thermal management member comprises a first heat protection layer, and at least one resilient layer containing one or more organic materials. The first heat protection layer has a thermal conductivity less than about 65 mW / mK. The at least one heat protection layer maintains at least one surface of the resilient layer below a decomposition temperature of at least one of the organic materials.SELECTED DRAWING: Figure 11

The application provides a battery module multistage pressure relief-explosion suppression-fire resistance guide and discharge device, and belongs to the technical field of lithium ion battery safety protection and explosion prevention. The device comprises a battery module box, a connecting pipe and a gas treatment pressure relief box. The inner cavity of the battery module box is provided with a plurality of single lithium batteries. The top of each single lithium battery is provided with a battery pressure relief valve. The top of the inner cavity of the battery module box is provided with a gas flow guide mechanism. The gas outlet end of the battery pressure relief valve is in communication with the gas flow guide mechanism. One end of the connecting pipe is in communication with the gas flow guide mechanism. The gas treatment pressure relief box is provided with a cyclone condensing mechanism, a free radical weakening mechanism and a fire resistance pressure relief mechanism. The cyclone condensing mechanism is in communication with the free radical weakening mechanism. The free radical weakening mechanism is in communication with the fire resistance pressure relief mechanism. The end of the connecting pipe, which is away from the gas flow guide mechanism, is in communication with the cyclone condensing mechanism. The device reduces the risk of flame propagation and explosion, and improves the safety of the mine lithium battery system in a limited space.

A transparent flame-retardant sheet having a high chlorine content is provided. The transparent flame-retardant sheet is made of a polyvinyl chloride composition that includes 100 parts by weight of a polyvinyl chloride raw material component, 0.1 to 1 parts by weight of at least one carbon forming agent, and 2 to 5 parts by weight of at least one heat stabilizer. The polyvinyl chloride raw material component includes a polyvinyl chloride raw material and a chlorinated polyvinyl chloride raw material in a content ratio of 1:1.22 to 1:4. Therefore, the transparent flame-retardant sheet has a fire propagation index (FPI) of less than 6 and a smoke damage index (SDI) of less than 0.4 according to the FM4910 standard under the condition of having a thickness of 5 mm.

This description relates to a thermoplastic resin composition, a method for producing the same, and a molded article containing the same, and more particularly to a thermoplastic resin composition characterized by comprising (a) 32.5 to 49% by weight of a polymer, (b) 7 to 20.5% by weight of a ceramic-forming binder, (c) 6.5 to 20.5% by weight of a ceramic-forming metal precursor, (d) 13 to 37% by weight of a ceramic-forming nonmetal precursor, and (e) 2 to 8% by weight of a flame retardant, a method for producing the same, and a molded article containing the same. According to the present invention, a thermoplastic resin composition, a method for producing the same, and a molded article containing the same are provided, which are excellent in flame retardancy and electrical insulation, and also have excellent flame delay characteristics during thermal runaway by forming ceramics at ultra-high temperatures and when flames are generated, thereby delaying flame propagation, thus ensuring safety for property and human life, and are environmentally friendly.

A battery device (3) is provided. The battery device comprises a casing having a plurality of sides (10a-10f) including a bottom side, a top side opposite to said bottom side, two lateral sides, a front side, and a rear side opposite to said front side, wherein the plurality of sides are assembled to form a sealed container, and a battery cell pack (20) located within the sealed container. The casing comprises at least one outlet (31) arranged at at least one of the plurality of sides. The sealed container is configured to prevent heated gases generated upon a malfunction of the battery cell pack from escaping the casing except via the at least one outlet. The battery device further comprises a filter (13) arranged at said at least one outlet for limiting at least flames from escaping the casing, and terminals for connection of the battery device to a load, another battery device or an external power source, arranged at the front side, and wherein said at least one outlet is arranged at the rear side of the casing.

The invention discloses a unified probability propagation prediction method and system suitable for a WUI fire disaster. The method comprises the following steps: constructing a unified state space and carrying out discretization; constructing an external driving model of building layer fire propagation; constructing a building layer dynamic Bayesian network by taking each building as a node, and parameterizing a conditional probability table of the building layer dynamic Bayesian network based on a physical driving mechanism; establishing a mapping relation between the internal state of the building layer and the external observation category; state correction and rolling prediction are realized based on Bayesian updating: after external observation is obtained, Bayesian updating is carried out on a system state in combination with observation information, posterior state distribution is obtained, the posterior distribution is used as an initial state of next time step prediction, a rolling assimilation closed loop is formed, and a rolling assimilation closed loop is obtained; and finally, outputting a multi-state probability risk field of the building scale evolved along with time. According to the method, unified coupling of landscapes, buildings and flying fire can be achieved, state probability output evolved along with time is obtained, and assimilation deviation correction can be achieved.

A system and method for wildfire detection, monitoring, and consequence modeling integrate digital cameras with artificial intelligence to identify, track, and predict fire behavior. The system processes camera imagery, satellite data, environmental inputs, aircraft telemetry, and contextual information to detect ignition points, triangulate fire locations, and model projected fire spread. A fire propagation engine generates maps, graphs, and consequence estimates, including burned area, affected infrastructure, population exposure, and financial loss. Alerts are triggered based on detection and modeled impact, with filters to suppress false positives, merge repeated detections, and escalate based on user-defined risk thresholds. The system includes tools for managing prescribed fires, tracking smoke-only detections, and customizing alert logic by geography, asset proximity, or scenario. External datasets may be ingested via API or file upload to support consequence scoring and operational prioritization. Users may run simulations, analyze historical conditions, and export results for planning, response coordination, or regulatory reporting.

The invention belongs to the technical field of fire and explosion prevention and control, and discloses a modified KHCO3 / molecular sieve composite inhibitor as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, preparing a saturated KHCO3 solution; s2, adding a molecular sieve into the saturated KHCO3 solution prepared in S1 to form a first turbid liquid; s3, adding absolute ethyl alcohol into the first turbid liquid obtained in the S2, and stirring by the magnetic stirrer at a constant temperature to prepare a uniform second turbid liquid; s4, carrying out suction filtration on the second turbid liquid obtained in S3 by using a circulating water vacuum pump, collecting separated white powder, and drying; s5, adding hydrophobic silicon dioxide and talcum powder into the powder dried in the step S4, and jointly grinding; after grinding and screening, drying again to finally obtain the modified KHCO3 / molecular sieve composite inhibitor. The preparation method is simple and easy to operate, the prepared composite inhibitor can effectively inhibit flame propagation and overpressure in the explosion process, the explosion hazard is remarkably reduced, and the blank of a solid inhibitor for inhibiting the explosion of H2 / NH3 / air premixed gas can be filled.

The invention relates to the field of intelligent fire protection, and discloses an intelligent fire protection monitoring and early warning system based on the Internet of Things, which comprises a data acquisition unit for acquiring a fire protection environment through an Internet of Things sensor network to obtain a fire protection environment data set; performing abnormal fluctuation feature extraction on the fire-fighting environment data set to obtain an abnormal fluctuation feature vector; according to the invention, comprehensive monitoring of the fire-fighting environment is realized through an Internet of Things sensor network, advanced technologies such as deep reinforcement learning and a graph neural network are combined, fire-fighting environment data can be analyzed in real time, a potential area of a fire source can be dynamically evaluated, an early warning signal is sent out in advance, and the fire-fighting environment can be monitored in real time. According to the method, rapid response can be ensured at the initial stage of fire, the accuracy and timeliness of early warning are remarkably improved, a potential area of a fire source and a fire propagation path can be identified, a scientific basis is provided for fire-fighting resource allocation and fire source positioning, and fuzzy judgment and lagging response to the position of the fire source in a traditional scheme are avoided.

The invention provides a battery module multi-stage pressure relief-explosion suppression-fire retardance guide row device, and belongs to the technical field of safety protection and explosion prevention of lithium ion batteries, the battery module multi-stage pressure relief-explosion suppression-fire retardance guide row device comprises a battery module box, a connecting pipe and a gas treatment pressure relief box, a plurality of single lithium batteries are arranged in an inner cavity of the battery module box, and a battery pressure relief valve is arranged at the top of each single lithium battery; a gas flow guide mechanism is arranged at the top of an inner cavity of the battery module box, the gas outlet end of the battery pressure release valve is communicated with the gas flow guide mechanism, one end of the connecting pipe is communicated with the gas flow guide mechanism, a rotational flow condensation mechanism, a free radical weakening mechanism and a fire-retardant pressure release mechanism are arranged in the gas treatment pressure release box, and the rotational flow condensation mechanism is communicated with the free radical weakening mechanism. The free radical weakening mechanism communicates with the fire-retardant pressure relief mechanism, and the end, away from the gas flow guide mechanism, of the connecting pipe communicates with the rotational flow condensation mechanism. According to the device, the flame propagation and explosion risks are reduced, and the operation safety of the mining lithium battery system in a limited space is improved.

The utility model provides a wear-resistant waterproof coiled material, which relates to the technical field of waterproof coiled materials, and comprises a waterproof coiled material body, the upper surface of the waterproof coiled material body is printed with anti-skid lines, and the waterproof coiled material body is composed of a wear-resistant layer, a thermal insulation layer, a waterproof layer, a flame-retardant layer, a reinforcing layer, a tire base layer, a base layer and a bonding layer. The bottom surface of the substrate layer is fixedly connected with a bonding layer, and the bonding layer is made of a hot-melt adhesive material. According to the wear-resistant waterproof roll, the friction force between the wear-resistant waterproof roll and the feet of a moving person can be increased by printing the anti-skid lines on the upper surface of the waterproof roll body, the good wear resistance of the waterproof roll body can be effectively guaranteed by arranging the wear-resistant layer made of a rubber material, heat transfer can be effectively blocked by arranging the heat insulation layer, and the service life of the waterproof roll is prolonged. By arranging the flame-retardant layer, the waterproof coiled material body has the effect of slowing down flame propagation, and by arranging the reinforcing layer, the waterproof coiled material body has good tensile property.