684 results about "Spontaneous combustion" patented technology

The invention belongs to the technical field of electric energy metering, and particularly relates to a high-safety electric energy metering box, which comprises a box body and a safety assembly, and is characterized in that a meter is mounted in a mounting chamber in the box body, penetrates through the side wall of the mounting chamber through a connecting wire, and is connected into an external power grid system; a storage chamber is arranged on the back face of the box body, a safety gap is formed between the storage chamber and the installation chamber, and an information storage device is arranged in the storage chamber and connected with the meter through a transmission wire. When the meter has an overheating spontaneous combustion accident, a mounting chamber where the meter is located and a storage chamber where an information memory is located are physically separated through a safety gap; and the propelling equipment is started to drive the moving plate to move downwards to physically cut off the transmission wire, so that the information memory and the meter are completely separated, high-temperature flames are prevented from spreading along the transmission wire to threaten the information memory, the loss is further reduced, and the information safety is ensured.

The invention relates to the technical field of immersed temperature control and thermal runaway prevention of a power battery of a new energy automobile. The technical problems to be solved are clearly reflected that the non-uniform heat dissipation and spontaneous combustion of the power battery are two technical problems of a new energy automobile, and the technology provided by the invention can enable the heat dissipation of the power battery to be good and prevent spontaneous combustion. The technical scheme for solving the problem is characterized in that a buffer material is used for protecting the bottom of a battery pack, a circulating temperature control system is filled with fluorinated liquid, elements such as battery cells in the battery pack are soaked in the fluorinated liquid, and according to the temperature requirement of the battery cells, the fluorinated liquid exchanges heat with a heat pump system, a heater and a driving motor, so that the battery pack is heated. The fluorinated liquid is recycled to raise or lower the temperature of elements such as the battery pack. When the battery cell is abnormally high in temperature or thermal runaway, the battery cell is extinguished and cooled by means of quick discharge, water injection into the battery pack and the like. The device is used for heating or circularly cooling elements such as a power battery and preventing spontaneous combustion of a power battery pack.

The invention relates to the technical field of mining local fan air duct air volume self-adaptive adjusting equipment, in particular to a mining local fan air duct air volume self-adaptive adjusting device. According to the technical scheme, the self-adaptive adjusting device for the air volume of the air duct of the mining local fan comprises a fan body, a radiator, an installation support, an electric adjusting air door, an air storage bin, the air duct, an environment detection module, an air speed detection module and a control module, the radiator is arranged on one side of the fan body, and the installation support is arranged on the bottom face of the fan body; an electric adjusting air door is arranged on one side of the ventilator main body; the environment sensing module is arranged, triple redundancy design is adopted, when the gas concentration is abnormal, whether the gas concentration is a spontaneous combustion symptom or not can be discriminated in combination with temperature data, or the coal rock collapse risk is pre-judged through the dust concentration change, and the safety interlocking response time is shortened.

The invention discloses a coal oxidation dynamic evolution multi-parameter real-time monitoring device under ultraviolet radiation, the device comprises a monitoring unit and a reaction unit, the monitoring unit comprises an ultraviolet radiation module, a gas monitoring module, a heat monitoring module, an active group monitoring module, a free radical monitoring module and a control unit, the reaction unit comprises a multi-channel in-situ reaction module and a coal sample reaction cavity, and a monitored coal sample is arranged in the coal sample reaction cavity; the ultraviolet radiation module is used for generating a controllable ultraviolet radiation field on the surface of the coal sample; the gas monitoring module is used for monitoring gas components released in the coal oxidation process in real time; the heat monitoring module is used for monitoring temperature distribution inside and on the surface of the coal sample; the active group monitoring module is used for tracking dynamic evolution of functional groups on the surface of the coal sample. Accurate and high-timeliness coal sample dynamic evolution monitoring is realized, and key data support is provided for revealing a coal oxidation chain reaction mechanism and a spontaneous combustion process.

The invention relates to the field of cables, in particular to a safety cable connector with an anti-drop function, which comprises a female head, a connecting sleeve and a male head, the surface of the female head is connected with a connecting sleeve; the connecting sleeve is slidably connected with a male head, and the surface of the male head is fixedly connected with a plurality of guide strips; grooves corresponding to the guide strips are formed in the inner sides of the connecting sleeves, and magnetic attraction pieces capable of being matched with each other are arranged at the deepest positions of the grooves and the ends of the guide strips. A heat conducting ring and the like are also included; the contact column of the female head is fixedly connected with a heat conduction ring. When the contact column and the connecting ring are overloaded and generate heat abnormally, continuous heat is transmitted to the expansion ring through the heat conducting ring, the expansion ring is gradually extended rightwards after being heated, the expansion ring extrudes and pushes the round rod rightwards, then the round rod pushes the connecting disc and the connecting ring rightwards, the connecting disc slides along the inner side of the male head, and the male head is connected with the male head. And the circuit is cut off, so that continuous temperature rise is prevented, and a spontaneous combustion event is avoided.

The invention discloses a fireproof flame-retardant technology for electric vehicles. The invention relates to the technical field of fire prevention and flame retardance of electric vehicles (non-new energy electric vehicles). Along with increasing quantity of various electric two-wheeled vehicles, tricycles and four-wheeled vehicles, spontaneous combustion of the electric vehicles and ignition of surrounding vehicles occur occasionally, and serious property loss is caused. Corresponding flame retardants are added into raw materials for manufacturing parts such as plastic parts, rubber parts, sponge parts and leather parts of the electric vehicle to manufacture the parts with flame retardance, fireproof paint is sprayed on the inner surfaces and the outer surfaces of metal parts and the plastic parts of the electric vehicle, and fireproof electric wires are adopted as wires of electric elements of the electric vehicle. And a series of measures such as sleeving the fireproof wire with a fireproof cloth sleeve and protecting the battery compartment by using a fireproof heat-insulating material are taken, so that the whole electric vehicle has fireproof and flame-retardant functions. When electric vehicle wires are short-circuited and on fire, batteries are spontaneously combusted or adjacent vehicles are combusted, the battery is not ignited.

The invention discloses a coal storage and transportation intelligent management method and system, relates to the technical field of intelligent management systems, and aims to solve the problems of lack of environment monitoring, scheduling decision lag, extensive safety response and serious data island in the prior art. The method comprises the following steps: collecting the physical state, environmental parameters and operation behavior data of a coal storage yard in real time through a distributed sensor network; constructing a three-dimensional dynamic digital twinborn model and inputting the model into a time sequence neural network to predict the risk of spontaneous combustion, collapse or dust explosion in the future; and generating a dynamic scheduling instruction in combination with the task priority and the equipment state, and triggering a multi-level security response mechanism. The system comprises a sensor network module, a data fusion modeling module, a risk prediction module, a scheduling optimization module, and a closed-loop control and safety response module. According to the scheme, safety early warning preposition, scheduling decision intelligent optimization and resource energy efficiency collaborative improvement in the storage and transportation process are achieved, and the response capability and operation reliability of the coal supply chain are remarkably enhanced.

The invention discloses a fire extinguishing system for an energy storage battery cabin of an energy storage power station, and belongs to the technical field of fire fighting, the fire extinguishing system comprises a battery storage cabin, a cabin door is mounted outside the battery storage cabin through hinges, and a carbon dioxide generator and a fire extinguishing agent spraying box are fixedly mounted on the top surface of the battery storage cabin; an exhaust plate and a fire extinguishing agent spraying plate are arranged at the bottom of the carbon dioxide generator and the bottom of the fire extinguishing agent spraying box correspondingly and located on the inner side of the battery storage bin. According to the fire extinguishing device, the driving assembly and the extrusion assembly are arranged in a matched mode, through the design, the interior of the battery storage bin can be monitored in real time, when spontaneous combustion of a battery occurs, the fire extinguishing system can be controlled to be started in time to treat the spontaneous combustion condition, and the fire extinguishing mode of combining a dry powder extinguishing agent and carbon dioxide gas is adopted; the fire extinguishing effect can be greatly improved, meanwhile, gas and a fire extinguishing agent can be rapidly diffused and distributed in the cabin, and the actual application effect of the system is improved.

The application belongs to the field of park unmanned inspection safety monitoring, and specifically discloses a park unmanned inspection safety monitoring system based on intelligent property, which comprises the following steps: acquiring a UAV inspection path by counting each missing space and each intersection space in a park, and discovering safety hazards in hidden spaces in the park in a timely manner; acquiring a redundant material heat conductivity index in each key space and an overlapping area of the redundant material heat conductivity index and an illumination area, evaluating a cumulative spontaneous combustion effect index between the redundant material heat conductivity index and a meteorological environment, combining a pollution rate of the redundant material in each key space, analyzing a safety coefficient of the redundant material in each key space, and helping to discover spontaneous combustion risks and environmental pollution problems in a timely manner; analyzing priority weight values of each passage path to which each key space belongs, determining a UAV inspection optimized path, and further optimizing the inspection optimized path by extracting historical inspection data, so that the UAV inspection path is more in line with actual requirements of the park.

The utility model discloses a safety type active water molecule electrolysis device which comprises a shell with an air flow channel, a membrane electrode assembly is arranged in the shell, the membrane electrode assembly divides the air flow channel into an air inlet end and an air outlet end, the anode side of the membrane electrode assembly faces the air inlet end, the cathode side of the membrane electrode assembly faces the air outlet end, and the air outlet end faces the air outlet end. The air inlet end is provided with a pure iron foil for air flow to pass through, the pure iron foil absorbs oxygen generated by electrolyzing water molecules on the anode side of the membrane electrode assembly, and the exhaust end is provided with an ePTFE microporous breathable protective film. Through the mode, the safe active water molecule electrolysis device and equipment can absorb oxygen in the equipment, so that the oxygen content is in a lower state, the corrosion damage of oxygen-enriched atoms is avoided, and the spontaneous combustion risk caused by over-high internal oxygen concentration is avoided.

The invention belongs to the technical field of coal mine fire prevention and extinguishing, and particularly provides a coal mine goaf fire simulation experiment device and method. Comprising an experiment table groove body, a working face channel, an air inlet way, an air return way, a ventilation system, a goaf groove body, a water bath heating and heat preservation system, a goaf temperature simulation system, a distributed temperature acquisition system, a goaf gas environment simulation system and a gas acquisition system. According to the invention, the inclination pitching angle, the coal rock porosity, the goaf ignition position, the internal gas components and the like of the goaf can be simulated according to the actual conditions of different working surfaces of each coal mine, and the evolutionary process of the spontaneous ignition accident of the goaf is realized. According to experimental data, development and change states of internal temperature, gas components and the like of the goaf of each coal mine can be determined, key fire prevention and control areas of the goaf in each period of coal mining are found out, early warning is performed in advance, and life and property safety of underground personnel is guaranteed.

The invention relates to the technical field of battery safety, and provides a battery spontaneous combustion protection system and method based on a safety curve. The system comprises a battery data acquisition unit, a safety curve storage unit, a risk assessment unit, an execution control unit and an event recording and notification unit. The residual capacity, the internal resistance, the temperature, the cycle index and the charge state of the battery are collected in real time, the data and a safety curve provided by a battery manufacturer are subjected to normalization analysis, a risk score is calculated based on a multi-parameter weighting algorithm, and a risk grade is generated. The system executes a hierarchical protection strategy according to the risk level, including risk prompting, charging current limiting, charging disabling, discharging power reducing or output disconnecting, and executes soft turn-off before disconnection to reduce energy impact. The system has cloud updating and data returning functions, can automatically generate alternative thresholds when a safety curve is missing or abnormal, realizes early recognition and active protection of the spontaneous combustion risk of the battery, and remarkably improves the safety and reliability of the system.

The invention is applicable to the technical field of conveying belts, and provides a macromolecular flame-retardant conveying belt which comprises a mounting frame, a transmission roller and a guide roller, and the transmission roller and the guide roller are rotationally mounted on the mounting frame; the conveying belt is arranged on the transmission roller in a sleeving mode and used for conveying materials, the conveying belt makes contact with the guide roller, the conveying belt is composed of upper covering rubber, a bonding layer, a belt core framework and lower covering rubber, and the belt core framework is located between the upper covering rubber and the lower covering rubber and firmly bonded through the bonding layer. According to the high-molecular flame-retardant conveying belt, lump coal with high value and pulverized coal with low value are separated in real time at the conveying front end, value loss caused by mixed transportation is avoided, graded utilization of resources is achieved, and meanwhile through the arrangement of the conveying belt, atomization dust falling, a dust cover, spontaneous combustion monitoring, fixed-point fire extinguishing and the like, the conveying efficiency is improved. And dust pollution and fire risks are effectively reduced, and the working environment is improved.

The invention relates to an underground coal mine goaf spontaneous combustion networking type monitoring device, which belongs to the technical field of underground coal mine goaf spontaneous combustion monitoring, and comprises a panel display terminal, a monitoring host and a wireless detector group, the monitoring host is arranged at the corner of one side, close to the air inlet way, of the working surface; the panel display terminal is connected with the monitoring host; the wireless detector group comprises a plurality of wireless detectors which are distributed in the goaf along the stoping direction; the panel display terminal, the monitoring host and the wireless detector group are interconnected through a built-in LoRa module; the monitoring host moves in the forward stoping direction along with working face stoping. Collected information sharing among the wireless detector groups in the device is realized, long-distance signal transmission power consumption is reduced, and effective working time of the wireless detectors in a goaf is prolonged; the arrangement of the networking type wireless detectors improves the accuracy of natural ignition monitoring in the goaf and the monitoring precision of the ignition area. The invention further provides a corresponding monitoring method.

The invention discloses an underground garage spontaneous combustion management and control system, method and device based on AGV carrying, and relates to the technical field of garage spontaneous combustion management and control. The underground garage spontaneous combustion management and control system based on AGV carrying comprises an AGV carrying module; a fire extinguishing analysis module; a smoke diffusion analysis module; and a smoke discharge response analysis module. According to the invention, the AGV carrying robot carries the abnormal vehicle to the safe room for fire extinguishing, then carries out fire extinguishing analysis on the abnormal vehicle in the safe room and judges whether to carry out smoke discharge pressure dynamic optimization or not, and then carries out smoke diffusion analysis on the abnormal vehicle in the safe room and judges whether to carry out smoke discharge speed influence dynamic optimization or not. And finally, the smoke exhaust device is subjected to response analysis and whether smoke exhaust control optimization is carried out or not is judged, so that the effect of improving the safety in underground garage vehicle spontaneous combustion control based on the AGV is achieved, and the problem of low safety in underground garage vehicle spontaneous combustion control based on the AGV in the prior art is solved.

The invention relates to an emergency unlocking device for an energy storage cabinet, and aims to solve the technical problems that an energy storage cabinet door is difficult to automatically unlock and open, the internal pressure is timely released and danger expansion is avoided when small spontaneous combustion explosion occurs in the conventional similar energy storage cabinet. The emergency unlocking device is characterized in that the emergency unlocking device comprises a gas collecting mechanism and an executing mechanism, the emergency unlocking device is installed at the position of a lock of a cabinet door, an executing piece extending out of the executing mechanism is connected with an unlocking piece of the lock, a gas collecting seat of the gas collecting mechanism is semicircular, and a gas collecting film is arranged on one side of a circular opening in the top of the gas collecting seat. A through hole is formed in one side of a diaphragm of the gas collecting film, an executing mechanism is arranged at a hole opening in the bottom of the gas collecting seat, and the executing mechanism is connected with the through hole in the gas collecting seat of the gas collecting mechanism through a gas pipe; the executing mechanism is a pinch bar pushing unlocking device or an air cylinder pushing unlocking device, an air collecting film of the air collecting mechanism is fixed to a circular opening in the top of an air collecting base through an air collecting cover, and the two ends of a compressed spring in the air collecting base abut against the air collecting film and the inner bottom of the air collecting base respectively.

The invention discloses a coal mine goaf spontaneous combustion three-zone dynamic monitoring and liquid carbon dioxide injection regulation and control system, and relates to the technical field of mine field flame prevention. Deploying a sensor to dynamically adjust the acquisition layout and frequency; the data processing and analyzing module is used for dividing three spontaneous combustion zones by using deep preprocessing and an improved neural network and judging risks; the liquid carbon dioxide injection control module regulates and controls liquid injection according to needs through a regulating valve and a fuzzy-neural network algorithm; and the remote monitoring and early warning module is used for realizing monitoring, multi-stage early warning and virtual simulation based on cloud and big data, and all the modules are coordinated and can be fused with the existing system. The coal mine goaf spontaneous combustion three-zone accurate monitoring and liquid carbon dioxide efficient injection are achieved through accurate multi-source monitoring, intelligent analysis decision and dynamic accurate regulation and control; the system can early warn hidden dangers in advance, improve prevention and control accuracy, reduce resource waste, and can be integrated with an existing system to guarantee safety production of a coal mine and reduce accident risks.

The invention discloses a coal conveying and dust removing system suitable for easily self-fired coal, and particularly relates to the field of dust removal, the coal conveying and dust removing system comprises a multi-dimensional parameter acquisition and processing module, a dust raising risk grading module, a dust removing mode dynamic selection module, a dust removing core parameter quantitative regulation and control module and a real-time feedback iteration module; the multi-dimensional parameter collecting and processing module is used for collecting multi-dimensional data and marking the temperature close to the spontaneous combustion critical temperature and the high-concentration dust raising state; the flying dust risk grade division module is used for calculating a flying dust comprehensive risk index according to the parameters acquired through coupling and dividing risk grades according to the value of the flying dust comprehensive risk index; according to the method, dust raising risk grades are divided through multi-dimensional parameter acquisition, dust removal modes are dynamically selected in combination with particle characteristics of different transfer links, core parameters are quantitatively regulated and controlled, and the problems that dust raising characteristics of different transfer links are not distinguished, and the local dust removal efficiency is insufficient or energy consumption is wasted due to the adoption of unified parameters are solved.

The invention relates to an RH vacuum tank system and a combustion heating operation method, and belongs to the field of ferrous metallurgy vacuum treatment equipment. The system comprises a vacuum tank, a hot bent pipe, a top lance device, a vacuum air pump system and an automatic control system, the hot bent pipe is connected with the vacuum tank, and an automatic ignition device, an infrared temperature measuring device, a video monitoring device and a thermocouple are integrated in the hot bent pipe; the top lance device is of a water-cooling multi-layer sleeve structure, multiple stations are switched through a top lance rotating frame and a lifting trolley, and vacuum sealing is maintained. The method is based on multi-sensor cooperative control, low-temperature ignition, high-temperature spontaneous combustion and molten steel heating modes are automatically executed according to the temperature of a refractory material at the bottom of a tank and the temperature of molten steel, and combustion stability is ensured by dynamically adjusting the flow of fuel gas and oxygen. According to the scheme, through closed-loop ignition control, inert gas protection and intelligent monitoring, the safety is remarkably improved, and the gas explosion risk is avoided; full-automatic operation and precise temperature control are combined, the molten steel quality and the production efficiency are improved, and the device is suitable for refining production of high-value-added steel such as silicon steel and automobile sheets.

The invention discloses an electrical cabinet with a fireproof flame-retardant layer, and relates to the technical field of equipment fire protection, the electrical cabinet comprises a cabinet body, the cabinet body adopts a frame-type structure and is composed of stand columns and cross beams, the stand columns and the cross beams are welded and sealed by metal plates, fireproof flame-retardant plates are mounted inside and outside the side wall of the cabinet body, an opening is formed in the back surface of the cabinet body, and the opening is communicated with the opening. And an inner back plate is mounted at the opening. Fireproof flame-retardant plates such as magnesium oxide plates or calcium silicate plates are arranged on the inner side wall and the outer side wall of the cabinet body and combined with surface fireproof coatings to form double fireproof barriers, so that fire disasters of internal electrical equipment can be prevented from being conducted to the cabinet body, and invasion of external fire sources can be resisted; the inner back plate of which the back is made of a fireproof material is connected with the suspension plate through the honeycomb-shaped fireproof and flame-retardant heat dissipation cylinder, efficient heat dissipation is realized by using an open structure, cold air enters the cabinet body through the heat dissipation cylinder for cooling, the internal spontaneous combustion risk is reduced, a long and narrow flame-retardant channel prevents flame from spreading through the heat dissipation cylinder, and both fireproof and heat dissipation performances are considered.

The invention provides an electrical cabinet fire extinguishing method based on multi-sensor collaborative analysis, and relates to the technical field of electrical cabinet fire extinguishment. Infrared data of electrical equipment are identified by establishing an infrared temperature identification model, and the electrical equipment is identified according to the identified temperature, position relation, electrical connection relation and average temperature in a cabinet of the electrical equipment; the equipment spontaneous combustion risk of the electrical equipment is assessed by calculating a spontaneous combustion assessment value, a fire assessment value is calculated according to the spontaneous combustion assessment value, position distribution, combustible gas concentration, oxygen concentration and arc probability of the electrical equipment, and the loss estimation coefficient of the electrical room is judged according to the emergency coefficient, the fire assessment value and the fire grade of the electrical cabinet. And constructing a fire extinguishing relation model among the fire extinguishing agent, the fire assessment value and the fire behavior grade, and calculating the use dosage of the fire extinguishing agent of each electrical cabinet by taking the minimum loss estimation coefficient of the electrical room as a target and the residual dosage and the maximum safety concentration of the fire extinguishing agent as constraint conditions.

The invention relates to the technical field of automobile battery fire prevention, and mainly discloses an anti-spontaneous combustion fire-retardant battery which comprises a battery shell, a plurality of battery packs are arranged in the battery shell, a plurality of pressure relief holes are further formed in the battery shell, and fire barriers are further arranged on the pressure relief holes; the flame arrester comprises a plurality of layers of barrier covers, a flame arresting disc is further arranged at the joint of the barrier covers and the pressure relief hole, and a flame arresting seam is formed in the flame arresting disc; wherein the barrier covers are provided with a plurality of flow-through hole layers in the flow measuring direction of the combustion medium, the flow-through hole layers in every two adjacent barrier covers are arranged in a staggered manner, and the flow-through hole layers and the fire-retardant seams are communicated with the inner space and the outer space of the battery shell, and the technology that after thermal failure of the battery, safe pressure relief can be achieved, and flames can be prevented from spreading outwards can be achieved.

The invention discloses an intelligent fire extinguishing robot for an underground garage. The intelligent fire extinguishing robot comprises multiple system modules, wherein an intelligent navigation and positioning system constructs a three-dimensional map for positioning and obstacle avoidance; the parking space intelligent identification system scans the parking space to generate a thermodynamic diagram for early warning battery spontaneous combustion; a mechanical arm of the efficient fire extinguishing execution system is integrated with a force control sensor and the like, and multi-fire-extinguishing-agent switching is supported; the multi-robot collaborative operation module realizes data sharing of main and auxiliary robots, and the auxiliary robot moves the vehicle and releases the unmanned aerial vehicle; the multi-mode perception sensor group can identify glass materials and the like; the control system fuses data to adjust mechanical arm parameters; the energy management system adopts a graphene battery and a photovoltaic film; and the remote operation and maintenance module uses a block chain for evidence storage and a universe interface for commanding. All the systems construct a link through a bus, and data collection, instruction generation and linkage of all the systems are achieved. The robot dynamically plans a path based on central axis cruise, fire prevention and control are completed through multi-machine linkage, and full-process intelligent fire prevention and control are achieved through multi-system cooperation.

The invention belongs to the technical field of power equipment, and discloses an internal fire prevention and spontaneous combustion prevention integrated energy-saving power distribution control cabinet which comprises a power distribution cabinet, a sealing door and ventilation openings formed in the power distribution cabinet at equal intervals, and further comprises a pressure box installed at the top of a cavity of the power distribution cabinet and used for storing carbon dioxide, and an infrared flame detector and a visual sensor are fixedly mounted at the bottom of the pressure box. According to the scheme, when the infrared flame detector and the visual sensor are used for detecting that electric appliance elements in the power distribution cabinet are in fire, the electromagnet is powered off, the inner plate is pushed to move outwards under the action of pressure in the pressure box and the flow guide plate, and carbon dioxide sinks in the power distribution cabinet under the guidance of the inclined plane; and the carbon dioxide is adopted to replace a dry powder extinguishing agent, so that the protection effect of the device on electrical components in the power distribution cabinet is improved.

The invention provides a vehicle spontaneous combustion emergency processing system and method based on an AGV, and belongs to the technical field of vehicle management. The system comprises an AGV robot and a control system, wherein the control system is configured to collect state data and environment sensing data of a spontaneous combustion vehicle; according to the collected environment perception data, determining obstacle distribution, and according to the collected state data, determining a fire behavior grade through a preset rule; selecting a corresponding processing strategy according to the judged fire behavior grade; and according to the judged fire behavior grade and the determined obstacle distribution, through an optimized A * algorithm, an optimal AGV robot carrying path is generated. According to the invention, rapid response, accurate isolation and intelligent cooperative processing of vehicle spontaneous combustion accidents are realized through a multi-stage fire behavior intelligent determination and dynamic path optimization technology.

The invention provides a method and system for evaluating the spontaneous combustion risk of a fire in a confined space, and relates to the technical field of fire evaluation, and the method comprises the steps: constructing a ceiling impact fire model based on the confined space, the optimized discretization parameters of the ceiling impact fire model are determined by simulating and verifying free fire plume based on an open space in advance; based on the ceiling impact fire model, performing numerical simulation under various ventilation limitation degrees and various heat release rates to obtain a simulation result; based on the simulation result, extracting concentration distribution data and flue gas temperature distribution data of unburned fuel at the ceiling position; and comparing the concentration distribution data of the unburned fuel and the flue gas temperature distribution data with corresponding combustion thresholds, and evaluating the spontaneous combustion risk of the limited space according to a comparison result. According to the invention, the assessment of the fire spontaneous combustion risk can be accurately quantified, and the serious dependence on artificial experience is avoided.

The invention discloses a vehicle, a control method and device thereof and a computer readable storage medium, the vehicle comprises an air compressor and a vortex tube, the compressor is connected with the vortex tube, and the vortex tube is arranged corresponding to a vehicle battery pack. The method comprises the steps that the temperature of a vehicle battery pack, the driving state of a vehicle and the conditions of drivers and passengers on the vehicle are obtained; under the condition that the temperature is larger than a first preset temperature threshold value, an air compressor is controlled to be started, so that the pressure of the vortex tube is increased; and under the condition that it is determined that the battery pack has the smoke alarm, the vehicle is controlled based on the driving state and the conditions of a driver and passengers. According to the method, the battery can be rapidly cooled, the risk of spontaneous combustion of the battery caused by too high battery fault temperature is avoided or reduced, the safety of people and properties in the vehicle can be guaranteed, and the safety risk of a public area is reduced.

The invention provides a real-time monitoring and spontaneous combustion simulation combined coal-fired pile spontaneous combustion early warning system and method, and belongs to the technical field of fire coal storage. The method comprises the following steps: acquiring real-time temperature monitoring data, real-time gas monitoring data and real-time volatile gas concentration monitoring data after the completion of self-stacking of a to-be-fired coal pile, respectively drawing a temperature-time curve, a humidity-time curve and a volatile gas concentration-time curve, and carrying out real-time monitoring; randomly sampling from a coal-fired pile to form a simulation model, then heating the simulation model, supplementing water and volatile gas, simulating the change process of the coal-fired pile, and observing whether the simulation model is on fire and spontaneously combusted; and coal-fired pile spontaneous combustion early warning. The system comprises a first temperature sensor, a second humidity sensor, a first gas concentration sensor, a simulation cavity, an electric heating element, a water supplementing pipe, a gas supplementing pipe and a central processing unit. According to the invention, beforehand early warning can be realized, a large amount of data operation is not involved, and the construction cost is relatively low.

The present invention belongs to the technical field of solid waste resource utilization. The present invention provides a porous soil matrix based on coal gangue as raw material, and its preparation method and application. The preparation method comprises the following steps: crushing, screening, and fluidizing calcining the coal gangue in sequence to obtain a porous soil matrix. The preparation method of the porous soil matrix of the present invention can significantly improve the total porosity of the coal gangue, increase the air permeability porosity and the water holding porosity of 0.0001 to 0.03 mm; remove the excess carbon and organic pollutants in the coal gangue that are prone to spontaneous combustion, retain sulfur, calcium, potassium and other elements, which is beneficial to plant growth while eliminating environmental pollution factors; the porous soil matrix prepared by the present invention can be combined with certain additives to make coal gangue microbial fertilizer, and can also be directly or in conjunction with biomass and gypsum solid waste to prepare coal gangue-based composite ecological soil for the restoration of the ecological environment in mining areas and the improvement of desertified soil.

The invention relates to the field of chemical engineering, and discloses a natural gas hydrogen-doped flow adjusting device which comprises a mounting box, a hydrogen tank, a mixing tank and a natural gas tank are sequentially mounted in the mounting box from left to right, a mixing mechanism is arranged in the mixing tank, and a ventilation and heat dissipation mechanism is arranged on the outer side of the mounting box. A fourth connecting pipe and a hydrogen inlet pipe are sequentially and fixedly connected to the outer side of the hydrogen tank from top to bottom, a second connecting pipe, a third connecting pipe and a gas outlet pipe are fixedly connected to the outer side of the mixing tank, and the second connecting pipe is located above the third connecting pipe and the gas outlet pipe. By adopting the leakage alarm mechanism driven by the air bag, when gas leakage occurs at the joint of the flange plate, the air bag pushes the conductive plate to trigger the alarm lamp. By means of the design, leaked gas can be rapidly stored, the spontaneous combustion risk is avoided, safety and emergency treatment efficiency are improved through instant response, and compared with a static alarm mode in the prior art, higher efficiency and higher reliability are achieved.