415 results about "Dust explosion" patented technology

The invention discloses a CFD-based dust explosion calculation method, and particularly relates to the technical field of dust explosion risk assessment. Firstly, initial dust parameters of a target scene are obtained, then a three-dimensional computational domain is established in combination with a geometric structure, ventilation conditions and obstacle distribution, and a dust deposition area is marked; constructing a gas-solid phase coupled dust explosion solving equation set in the CFD framework; outputting time sequence data of pressure, temperature, speed and dust concentration in the whole explosion process, and generating a risk grade distribution diagram based on the maximum explosion pressure and flame coverage time; according to the invention, the propagation and damage process of dust explosion can be accurately reproduced, the simulation precision and efficiency are improved, and the evaluation result can directly guide protection design and safety management.

The invention discloses dust removal equipment for dust explosion prevention and a dust removal method thereof, and relates to the field of dust removal equipment.The dust removal equipment comprises a dust removal box, a plurality of dust removal cloth bags in the dust removal box and a treatment mechanism for dust explosion prevention, the treatment mechanism is composed of a gas mixing assembly, a scraping assembly and a vibration assembly, and a filter bag top frame is connected with a vibration pipe frame through the vibration assembly; the gas mixing assembly is communicated with the dust removal box through a gas inlet pipe, the gas mixing assembly is used for mixing dusty gas and inert gas and preliminarily removing large-particle dust, and the scraping assembly is arranged below the gas mixing assembly and scrapes the filtered large-particle dust; and the vibration assembly is used for periodically vibrating the dust removal cloth bag after the scraping assembly is detached so as to remove fine dust attached to the inner wall of the dust removal cloth bag. Inert gas is introduced and fully mixed before entering the dust removal box, and primary large-particle dust is filtered, so that the oxygen concentration is reduced, and dust explosion is effectively prevented.

The invention relates to the technical field of explosion-proof permanent magnet motors, and discloses a low-voltage explosion-proof dust explosion-proof permanent magnet motor which comprises an explosion-proof shell, a front end cover and a rear end cover, the front end cover and the rear end cover are arranged on the two sides of the explosion-proof shell respectively, and the front end cover and the rear end cover are both attached to the explosion-proof shell. And a dustproof heat dissipation mechanism is arranged on the rear end cover. Through the design of a dustproof heat dissipation mechanism, a connecting rod drives fan blades and a U-shaped plate to rotate, after the fan blades rotate, external airflow is sucked from an air inlet hole to achieve the purpose of air cooling, before the airflow enters, a filter screen filters dust, a cleaning layer cleans away dust on the filter screen when passing through the filter screen, and when passing through a scraper blade, the dust on the filter screen is cleaned away by the cleaning layer; the scraper blade scrapes off dust on the cleaning layer, air-cooled gas is finally discharged through the exhaust hopper, the scraped-off dust can be quickly blown away, the situation that dust explosion is possibly caused by dust gathering is avoided, the application range is wider, and safety is higher.

The invention discloses an integrated thermal management system for an explosion-proof charger, and relates to the technical field of chargers. Comprising the following steps: S100, three-dimensional thermal field modeling: acquiring a heat source point cloud by using a laser radar and a temperature sensor array, and constructing a three-dimensional thermal management model in combination with finite element analysis; the liquid cooling pipeline layout is optimized through three-dimensional thermal field modeling (the error of heat flow density uniformity is smaller than or equal to 10%), the integrated design of a ZL114A aluminum alloy shell and a micro-channel liquid cooling plate (the thermal resistance is reduced by 40%) is combined, a metal sealing structure of an IP68 protection grade and ExdIICT6 anti-explosion certification are matched, safe heat dissipation of the power device with the temperature smaller than or equal to 85 DEG C is achieved in the wide-temperature environment of-20 DEG C to 60 DEG C and the explosive environment of gas dust, and the safety of the power device with the temperature smaller than or equal to 85 DEG C is achieved. And meanwhile, the liquid cooling medium is intelligently managed through the conductivity sensor and the ion exchange resin filtering device, so that equipment faults caused by pollution are avoided.

The invention provides a dust explosion-proof early warning method and system, and relates to the technical field of safety monitoring and early warning, and the method comprises the steps: collecting and standardizing the multi-source data of a dust movement track, an airflow field and electrostatic potential distribution, calculating a vortex intensity index and a dust gathering trend coefficient, and constructing a multilayer neural network electrostatic coupling effect model, and nonlinear coupling mapping of dust concentration, electrostatic field intensity and vortex intensity is realized. And when the danger increment output by the model and the growth rate of the dust gathering trend coefficient exceed a preset threshold value, triggering dust explosion-proof early warning. Therefore, the risk change under the action of the electrostatic field can be detected, the recognition capability of abnormal working conditions and a coupling mechanism is remarkably improved, and the safety control level is greatly improved through early-stage accurate early warning and intelligent disposal of dust explosion hidden dangers.

The invention discloses an explosion-proof valve device for an explosive dust environment, and relates to the technical field of explosion-proof valves, the explosion-proof valve device comprises a valve body and a first protection assembly; a feeding ring is fixed to the right end of the interior of the valve body, a second protection assembly is installed at the left end of the interior of the valve body, two corresponding fixing assemblies are installed at the right ends of the front side and the rear side of the valve body, a pulling assembly is installed in the middle of the interior of the valve body, and a buffering assembly is installed at the left end of the feeding ring; a sealing assembly and a second connecting assembly are installed in the feeding ring, the sealing assembly and the buffering assembly are connected through the second connecting assembly, and a first connecting assembly is installed on the front side of the valve body. And the first protection assembly comprises a rotating shaft, a rotating disc, a valve cover, a pull rod and an inclined extrusion block, the valve cover is arranged at the left end of the fixing ring, the valve cover is attached to the left end of the feeding ring, shock waves generated by dust explosion can be buffered, the impact force of the shock waves is reduced, and leakage is avoided.

The invention relates to the technical field of heavy calcium carbonate production and conveying, in particular to a heavy calcium carbonate production conveying frame. The invention provides a heavy calcium carbonate production conveying frame capable of preventing dust from flying. A heavy calcium carbonate production conveying frame comprises a supporting frame, a conveying assembly is installed on the supporting frame, a material blocking plate is fixedly connected to the surface of the conveying portion of the conveying assembly, the supporting frame is fixedly connected with a protective cover, the protective cover is connected with a feeding barrel, and a spiral feeding paddle is rotationally connected into the feeding barrel. According to the invention, the primarily crushed heavy calcium carbonate raw material is conveyed through the spiral feeding paddle, the falling speed of the crushed raw material can be slowed down, and the impact force during falling can be reduced, so that the dust flying caused by large impact force during falling can be avoided, the dust dissipation can be avoided, the dust density can be reduced, and the production efficiency can be improved. The risk of dust explosion is avoided, workers can be prevented from inhaling escaping dust, and the health of the workers is guaranteed.

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 relates to the technical field of dust combustion, and provides a dust explosion combustion experiment device in order to solve the problems that an existing dust explosion combustion experiment device is insufficient in parameter control precision, and an experiment multi-focus single variable lacks a dust removing mechanism and a safety protection measure, and the dust explosion combustion experiment device comprises an experiment table which is provided with a power chamber and an equipment chamber; one side of the experiment table is hinged with an access door, two sides of the top of the experiment table are provided with conveying main pipes extending to the equipment chamber, a power supply assembly is arranged in the electric power chamber; the protective shell assembly comprises an outer shell and an inner shell; a plurality of exhaust pipes are arranged at the top of the inner shell; the dust generation assembly comprises a plurality of dust storage tanks and an air compressor; the ignition control assembly comprises a pulse igniter, a flame detection feedback circuit and an ignition head; the environment adjusting assembly comprises a box body, an oxygen tank and a humidifier, wherein the oxygen tank and the humidifier are arranged in the box body. The device has the advantages that the dust concentration is accurately regulated and controlled, the environmental parameters are dynamically coupled and controlled, dust residues are rapidly removed, and the experiment safety is high.

The invention discloses a dust explosion dynamic blocking method based on multi-modal data fusion. The method comprises the following steps: S1, constructing five core accident trees; s2, collecting multi-source data of dust explosion in real time and preprocessing the multi-source data, and extracting a multi-dimensional feature vector containing temporal and spatial variation features; s3, converting the multi-dimensional feature vector into a real-time state vector of five core accident trees through an event activation rule, and completing multi-source data fusion; s4, according to the real-time state vector, calculating a top event probability of each accident tree by using a Monte Carlo simulation method, and then obtaining an accident tree dynamic coupling risk value through multi-tree coupling analysis; s5, according to the dynamic coupling risk value, using a spatial interpolation method and voxelization processing to obtain a normalized risk value, and generating a dynamic risk thermodynamic diagram; and S6, according to the risk value of each area in the dynamic risk thermodynamic diagram, determining the risk level of dust explosion, then carrying out multi-level interlocking control, and triggering a corresponding blocking strategy to realize dynamic blocking.

The utility model discloses a dust explosion-proof monitoring pre-control device of a cigarette dust-removing pneumatic conveying system, and relates to the technical field of dust explosion prevention of cigarette production equipment. Explosion-proof detection mechanisms such as a temperature sensor, a pressure sensor and an electrostatic spark detector, and control execution mechanisms such as an extinguishing and cooling device, a pressure relief control valve and a pipeline blocking valve device are arranged on the dust removal branch pipe and the main pipe, and are connected with a centralized control device; real-time monitoring and pre-control of temperature, pressure and electrostatic sparks of the cigarette dust in the conveying process are achieved. When abnormal conditions are detected, sound and light alarms can be given out in time, measures such as water spraying cooling, pressure relief and pipeline blocking are taken, dust explosion is effectively prevented and controlled, and the safety of cigarette production equipment and personnel is protected. Meanwhile, by arranging the one-way explosion-proof device, it is ensured that when the dust removal equipment explodes, impact airflow cannot affect an upstream conveying pipeline and equipment, and the safety of the system is further enhanced.

The invention discloses an experimental device and an experimental method for gas / dust explosion flame-shock wave superposition coupling effect and combustible medium explosion transition induced by gas / dust explosion flame-shock wave superposition coupling effect under multi-parameter influence. Comprising a visual explosion system, a gas leakage diffusion system, a powder leakage diffusion system, an ignition system, a gas supply system, a powder spraying system, a discharge system, a displacement regulation and control system, a data acquisition system, a synchronous controller and a program control and data acquisition system. According to the experimental device and the experimental method for the gas / dust burning flame-shock wave superposition coupling effect under the influence of the multiple parameters and the induced combustible medium burning explosion transition thereof, the action processes of mutual impact, superposition, coupling and the like of detonation / detonation head-on flame-shock wave under the multiple working condition parameters can be realized; and the experimental study on the process of inducing the leakage diffusion combustible medium explosion transition and the critical condition thereof fills the technical blank of the study on the explosion flame-shock wave coupling effect process and the secondary disaster evolution mechanism induced under the influence of multiple parameters.

The utility model discloses a wet dust removal box which comprises a box body, a sedimentation tank, a dust feeding pipe, an exhaust fan and a plurality of dust adsorption components, a dust removal cavity is formed in the box body; the sedimentation tank is arranged in the dust removal cavity and is filled with water; one end of the dust feeding pipe is located outside the box body, the other end of the dust feeding pipe is located in the dust removal cavity and at least partially extends into water in the sedimentation tank, and wind dust to be treated enters the sedimentation tank through the dust feeding pipe; the exhaust fan is arranged on the box body and is used for extracting air in the dust removal cavity outwards; the dust adsorption assemblies are arranged in the dust removal cavity at intervals, are positioned above the sedimentation tank and are used for adsorbing dust overflowing from the sedimentation tank; by means of the structure, wind dust can be treated in a water adsorption mode, wet dust removal is achieved, the dust removal effect and the dust removal efficiency are improved, the danger of dust explosion is eradicated, and very good practicability is achieved.

The invention belongs to the technical field of explosion suppression experiments, and particularly relates to an explosion suppression testing device which comprises an ignition electrode arranged in an explosion area and electrically connected with an ignition controller, the ignition controller is electrically connected with a control computer, and the ignition electrode is controlled by the control computer and the ignition controller to ignite an explosion source; the explosion suppression device is arranged at the top of the explosion area and is used for suppressing explosion after the explosion source is detonated; the explosion suppression device is filled with a water-based explosion suppression material, a powder explosion suppression material or a gas explosion suppression material; the explosion source is one of a solid explosive, a liquid explosive or a dust explosive. The control computer can control the ignition controller to control the ignition electrode to ignite the explosion source, after explosion occurs, the explosion suppression device is started to spray the explosion suppression material to extinguish the explosion source, and data analysis equipment such as a high-speed camera is erected on one side of the device, so that the test process is completely recorded, and performance analysis of the explosion suppression material on the explosion source is realized.

The invention discloses a metal dust explosion risk comprehensive index early warning method and system, and particularly relates to the technical field of metal dust. The method comprises the following steps: standardizing real-time dust environment data collected in a working site and standard dust data, generating a feature vector, calculating similarity, and identifying a potential abnormal state; processing temperature deviation characteristics and charge concentration fluctuation characteristics are further extracted, a multi-dimensional risk assessment model is constructed, a metal dust explosion risk comprehensive index is calculated by using a polynomial regression algorithm and is compared with a gradient risk threshold value, and multi-stage early warning signal triggering and linkage response control are realized; the method has a self-adaptive recognition capability on a novel or unknown dust state, the accuracy and response timeliness of risk early warning are remarkably improved, and the intrinsic safety guarantee capability of the system under a complex working condition is enhanced.

The invention discloses a dust explosion flame free radical testing system and a testing method, belongs to the technical field of dust explosion testing, and solves the problem that existing testing equipment cannot realize visual testing of combustion flame free radicals at the initial stage of dust explosion ignition and in the development process. According to the solution, the test system comprises an explosion generation assembly used for generating single-side open type dust cloud explosion, an optical observation assembly used for observing flame free radicals, a control system, a computer and an air compressor, and semi-open type dust cloud is formed through the explosion generation assembly and is ignited and detonated; images of different free radicals changing along with flame are collected through the optical observation assembly, and visual observation, recording and analysis are carried out through the computer. The system has the advantages of being high in functionality, integrated in system, easy to operate and safe and reliable in experiment process and is suitable for various kinds of combustible dust, collected data can promote dust explosion mechanism research, and data support is provided for development of dust explosion optical early warning protection measures.

The invention relates to a dust explosion risk analysis experimental device for a non-closed bag-type dust collector. The dust explosion risk analysis experimental device comprises an air injection base, a vacuum pump, an air storage tank, an electric spark generator and a discharge electrode. Dust explosion can be completed in an open space, so that the damage to a cloth bag and the surrounding environment can be researched when dust of the bag-type dust collector exposed in the air explodes, and meanwhile, the dust explosion test device has the characteristics of simplicity and convenience in operation, safety and reliability.

A positive and negative pressure integrated dust removal device for a dust explosion area is provided with a dust hood, an exhaust fan, a negative pressure air duct, a positive pressure blowing pipe, a positive pressure comb-shaped blowing opening, a comb-shaped part arranged on the positive pressure comb-shaped blowing opening and a dust filter bag. According to the dust collection device, the exhaust fan is arranged to extract air in the first cavity, so that negative pressure is formed in the negative pressure air duct, dust is sucked, the comb-shaped part guides air in the positive pressure air blowing pipe to face airflow blown out of the positive pressure comb-shaped air blowing opening, and the air in the negative pressure air blowing pipe is blown out of the negative pressure comb-shaped air blowing opening. The dust suction hood is arranged in the second cavity, so that dust in the opening is blown by airflow and limited in the second cavity by the dust suction hood, an exhaust fan is matched to extract the airflow in the negative-pressure air suction pipe, and the dust is sucked into the dust filter bag along the negative-pressure air suction pipe, so that the suction force at the inlet end of the negative-pressure air suction pipe is improved, and the dust in the covering area of the opening is removed.

The invention discloses raw material grinding equipment for preparing dry powder fracturing fluid in the technical field of dry powder fracturing fluid processing, which comprises a pre-crusher and a gas mill, the lower end of the pre-crusher is connected with a spiral feeding pipe, the spiral feeding pipe can guide pre-crushed materials into the gas mill, a separator is arranged between the pre-crusher and the gas mill, and the separator is connected with the pre-crusher. A flow guide assembly is arranged among the pre-crusher, the air mill and the separator and comprises an air flow adjusting pipe, and the air flow adjusting pipe is located between the air mill and the separator; the heat dissipation pipe group penetrates through the pre-crushing machine, and gas in the separator can enter the pre-crushing machine through the heat dissipation pipe group; according to the dust removal device for the gas mill, low-temperature gas guided out of the gas mill is guided into the pre-crushing machine for heat dissipation in a speed reduction mode, cold energy waste caused by direct discharge of the low-temperature gas is avoided, dust in materials entering the gas mill is prevented from being brought away, and therefore the possibility of dust explosion of the gas mill is reduced.

The invention belongs to the technical field of dust removal equipment for textile workshops, particularly relates to high-efficiency dust removal equipment for textile workshops, and aims to solve the problems that dust attached to a dust removal assembly cannot be thoroughly removed and effective dust removal measures are lacked due to the fact that frequent shutdown is needed for cleaning in the prior art. The equipment is provided with two sets of dust removal assemblies which can be alternately used, exchange is achieved through a switching structure, in a removing structure, a reciprocating lead screw drives a lifting plate to move, air in the lifting plate is sprayed out through a hollow pipe and an air outlet disc, and the reciprocating lead screw further drives the hollow pipe to rotate and is matched with an arc-shaped sealing plate to form pulse airflow, so that the dust removal assemblies are comprehensively cleaned; the dust reduction structure injects filtered air into the water tank for humidification and then is used for removing dust, so that the dust is rapidly reduced, and the equipment can improve the dust removal efficiency, avoid frequent shutdown of the equipment, effectively remove the dust, reduce the risk of dust explosion and guarantee the production safety of a textile workshop.

The invention relates to a gas dust explosion prevention and control targeted explosion suppressant regulation and control method based on machine learning, and belongs to the technical field of explosion prevention and control and material modification. According to the method, the inhibition effect of the explosion suppressant in a composite explosion environment is analyzed through a machine learning model, and targeted optimization is performed on the components, concentration and physical structure of the explosion suppressant based on experimental data and characteristic characterization. The method comprises the following specific steps: screening explosion suppressant components through literature investigation; carrying out modified compounding on the explosion suppressant and collecting explosion characteristic data; carrying out feature importance analysis by utilizing an XGBoost model, and identifying key factors influencing the explosion suppression effect; and optimizing the formula of the explosion suppressant according to a model analysis result, and verifying the effect through experiments. According to the method, the inhibition efficiency and adaptability of the explosion suppressant under the compound explosion condition are greatly improved, data-driven intelligent design is achieved, and the method is suitable for various industrial explosion prevention and control scenes.

The invention discloses a dust explosion risk prediction method, system, device and program, and relates to the technical field of industrial safety and disaster prevention and control, and the method comprises the steps: obtaining spectral data corresponding to time-space coordinates in a to-be-detected region; the spectral data comprises wavelength and intensity; elements contained in the dust and chemical concentrations of the elements are obtained based on the element recognition model and the spectral data; reconstructing a three-dimensional concentration field to obtain the spatial concentration of each element in voxels; and performing explosion risk dynamic coupling based on the elements contained in the dust, the chemical concentrations of the elements and the three-dimensional concentration field to obtain an explosion probability index. Through the treatment scheme disclosed by the invention, the dust explosion risk can be predicted in advance, small-range accurate explosion suppression can be realized, the safety is improved, and the explosion suppression cost is reduced.

The utility model discloses a spinning device for aluminum alloy hub production, which relates to the technical field of aluminum alloy hub production and comprises a transparent machine door hinged to the front side of a spinning machine body, an adjustable hob machining mechanism is arranged in the spinning machine body, and a dust collection mechanism is arranged on the transparent machine door. The adjustable hob machining mechanism comprises a servo control assembly, a two-way screw, two adjusting rods, a guide transverse shaft and two reciprocating type electric hob assemblies. According to the aluminum alloy hub machining device, the adjustable hob machining mechanism is arranged, the two hob bodies can be driven by the two adjusting rods to be close to each other, the working positions of the two hob bodies are continuously changed, and therefore the diversified machining requirements of different aluminum alloy hubs can be better met; and the dust collection mechanism is arranged, so that the harm of dust to the body health of workers can be effectively reduced, the dust explosion condition can be effectively avoided, and the potential safety hazard is reduced.

A dust explosion detection early warning device disclosed by the present invention comprises a rapid mounting seat, a mounting block, a dust treatment device, a rotating rod and a dust concentration detection unit, the lower end of the dust treatment device is fixedly connected with a warning indicator, the middle part of the upper end of the dust treatment device is fixedly connected with the mounting block, and the mounting block is detachably connected to the middle part of the lower end of the rapid mounting seat. A flange plate is fixedly connected to the upper end of the quick mounting seat, rotating rods are uniformly arranged on the periphery of the dust treatment device, one end of each rotating rod is rotationally connected to a rotating seat, the rotating seats are fixedly connected to the edge of the lower end of the dust treatment device, and buckle seats are fixedly connected to the dust treatment device above the rotating seats; the upper middle portions of the rotating rods are connected into the buckle bases in a buckled mode, and the other ends of the rotating rods are fixedly connected with dust concentration detection units. The invention aims to provide the dust explosion detection early warning device which is convenient to disassemble and assemble, has multi-direction detection and is efficient in dust treatment.

The invention relates to the technical field of dust removal equipment, in particular to a multi-stage dust removal device for a grain dryer and a dust removal method.The multi-stage dust removal device comprises a shell, a water tank, a rotating shaft, a demisting cover, a demisting component, a bag-type dust remover, a sealing baffle, a triggering component, a switching rotating shaft, a stirring component, a pulse cylinder, a pulse piston and a pulse part; gas guided out of the dryer is introduced into the water tank for water cooling, water vapor is removed through the demisting cover and the demisting component, and the cooled and dehumidified gas is further subjected to fine dust removal through the bag-type dust collector and then is exhausted. The bag-type dust collector is communicated with the water tank after a certain dust weight is accumulated through the trigger component, pulse cleaning of the bag-type dust collector is realized through cooperation of the stirring component and the pulse piston, and the cleaned dust is discharged after being mixed and stirred with liquid in the water tank, so that the dust in flue gas is conveniently mixed and cleaned; the dust explosion risk caused by dust raising during cleaning is prevented.

The invention provides a multimode full-view spark detector based on a photoelectric sensor, and belongs to the technical field of dust explosion-proof safety. The device comprises a detector shell provided with an end cover and a window, a plurality of photoelectric sensors, a signal function board card, a power supply function board card and a single chip microcomputer, the plurality of photoelectric sensors are sensitive to wave bands of 800-1700nm, and when a monitored area generates a photosensitive signal, the photoelectric conversion circuit is triggered to realize signal access; the signal enters a data acquisition port of the single chip microcomputer after being processed by an internal board card, and data acquisition, data processing, data judgment and output control are completed in the single chip microcomputer through an RT-Tread real-time operating system; the outer shell is mainly composed of spherical glass, a shielding cover, a shell body, an end cover and the like, the two photoelectric sensors are placed in a spherical window according to a certain angle, detection areas of the two photoelectric sensors are interwoven to form a detection net, the detection net covers the whole cross section direction in a pipeline, and a full-view-angle detection area is formed in the pipeline.

The invention belongs to the technical field of dust explosion testing, and particularly relates to a dust explosion discharge testing device and method, the dust explosion discharge testing device comprises an explosion pipeline and a base, the top end of the explosion pipeline is provided with an end cover, the base is provided with a powder storage tank, the powder storage tank is internally provided with a mushroom-shaped nozzle, the mushroom-shaped nozzle is provided with a plurality of air holes, and the air holes are communicated with the explosion pipeline. A pressure sensor and an ignition electrode are installed on the side edge of the explosion pipeline. When the dust explosion release test is carried out, firstly, to-be-tested powder is placed in the powder storage tank, then the base is sequentially covered with the sealing rubber mat, the explosion pipeline, the explosion release film and the end cover, then compressed air in the air storage tank is controlled to be conveyed into the explosion pipeline through the mushroom-shaped nozzle, and the compressed air is sprayed into the powder storage tank through the air hole; and at the moment, sparks of the started ignition electrode can explode instantly when encountering dust cloud, and the explosion venting film on the top is broken to release pressure and flames.

The invention relates to the technical field of coal bunker safety, in particular to a comprehensive prevention and control method and device for a coal bunker in a multi-disaster coupling environment and a medium of the comprehensive prevention and control method. The method comprises the following steps: determining a migration rule of multiphase flow in a coal bunker in a normal state; sensing data monitored by the comprehensive management and control platform in real time are obtained, and the possibility of initial disasters including gas explosion, dust explosion and coal spontaneous combustion is judged in combination with the migration law of the multiphase flow; according to the possibility of initial disaster occurrence, the possibility of multi-disaster coupling occurrence is judged; sensing data monitored in real time are obtained, a multi-disaster comprehensive management and control strategy in the coal bunker is formulated according to the possibility of multi-disaster coupling occurrence, and the possibility of coal spontaneous combustion, gas explosion or dust explosion is reduced. According to the comprehensive prevention and control method for the coal bunker in the multi-disaster coupling environment, the possibility of occurrence of multiple disasters can be judged globally and integrally, comprehensive prevention and control of the disasters in the coal bunker are achieved, and the prevention and control effect is good.

The invention relates to the technical field of high-water-content organic solid waste drying, in particular to a high-water-content organic solid waste drying method. According to the technical scheme, by means of the target organic matter, a carbon source can be provided for the target strain, and moisture diffusion channels between the solid waste blocks formed by the high-water-content organic solid waste can be supported, so that unbound water surrounded by the multiple solid waste blocks is diffused outwards from the moisture diffusion channels; organic matters in the high-water-content organic solid waste can be degraded and the porosity and the specific surface area of the high-water-content organic solid waste can be increased by virtue of the target strain; the temperature in the sunlight shed and the temperature of the target mixture in the drying process do not exceed 50 DEG C, so that good survival conditions of the target strains can be guaranteed, and the risk of dust explosion caused by dust concentration increase in the later drying period due to introduction of the target organic matter can be reduced. And the target mixture receives solar radiation, is continuously turned and is driven by the fan, so that the high-water-content organic solid waste is dried.

The invention relates to an explosion risk integrated intelligent decision-making method driven by multi-source and multi-modal data fusion, and belongs to the technical field of dust monitoring. The method comprises the following steps: S1, unifying multi-source and multi-modal data to the same spatial-temporal scale by adopting a multi-source and multi-modal data spatial-temporal fusion method; s2, constructing a dust explosion risk classification early warning model based on deep learning based on historical explosion risk data and dust concentration and spark detection data monitored in real time; and S3, according to different explosion risk levels, constructing a multi-source and multi-mode data fusion driving and cloud-edge-end hierarchical collaboration-based dust explosion risk intelligent decision model. The efficiency of aluminum magnesium dust explosion risk early warning and disposal decision making can be improved, and timely early warning and decision making are achieved.