3847 results about "Combustible gas" patented technology

The invention provides a gas leakage time-space correlation early warning method and system based on multi-modal data fusion, and relates to the technical field of data processing, and the method comprises the steps: collecting real-time concentration data and a historical leakage accident database through an NB-IoT combustible gas sensor network disposed at a key node of a gas pipe network; according to the real-time concentration data and a historical leakage accident database, a UTM projection coordinate system is adopted to carry out registration on geographic space data, a three-dimensional space mapping model of a pipe network topological structure is established, timestamp alignment is carried out on all dynamic monitoring data streams through an NTP clock synchronization protocol, and a time-space correlation standardized data set is formed. According to the invention, full-chain intelligent management of the gas leakage risk from sensing, prediction to disposal is realized.

The invention relates to a lithium battery energy storage system fire-fighting ventilation and explosion venting safety assessment method based on multi-dimensional simulation. The method comprises the following steps: constructing an energy storage system digital twinborn model fusing structure parameters, material attributes and environmental parameters; generating a multi-mode failure scene set covering multiple temperature domains and aging states through mode recognition; simulating and quantifying dynamic interaction of a temperature field, a flow field and a stress field in the thermal runaway evolution process based on thermal-fluid-solid multi-physics field coupling; constructing a space-time associated dynamic safety evaluation matrix, and combining fuzzy comprehensive evaluation and Monte Carlo sampling to generate risk quantitative indexes; and iteratively correcting parameters of the fire-fighting ventilation and explosion venting system through a multi-objective optimization algorithm to form a graded safety assessment conclusion. According to the method, the technical bottlenecks of environmental parameter splitting and single failure scene in a traditional method are broken through, the thermal runaway suppression efficiency is improved, the combustible gas concentration control error is reduced, and collaborative optimization of explosion venting pressure fluctuation suppression and ventilation response is realized through a closed-loop evaluation mechanism.

The invention discloses a BMS-based multifunctional integrated monitoring and fire control method and system, and the method comprises the steps: synchronously collecting the temperature, combustible gas concentration and dynamic environment monitoring data in a container through a BMU battery box management unit of a BMS, and generating a space-time correlated container environment state matrix; based on the environment state matrix, extracting temperature anomaly features, gas concentration gradient features and dynamic environment fluctuation features through a multi-modal feature fusion model, and constructing a multi-dimensional risk feature vector; inputting the multi-dimensional risk feature vector into a fire-fighting early warning optimization algorithm to generate a graded fire-fighting early warning signal; and according to the graded fire-fighting early warning signal, an active fire-fighting intervention strategy is triggered through a BMU unit of the BMS, a fire extinguishing device, a ventilation system and a power cut-off module are dynamically controlled, and a fire-fighting response path is synchronously optimized to be matched with the current risk grade. According to the embodiment of the invention, graded fire-fighting early warning can be realized, and the accuracy and timeliness of fire early warning are improved.

The invention relates to an environment monitoring method and system based on a digital twin technology, and relates to the technical field of environment monitoring, and the system comprises a sensor array which is used for obtaining environment data of a monitoring area; the sensor array comprises a temperature and humidity sensor, an oxygen concentration sensor, a combustible gas concentration sensor, a vibration sensor, a noise sensor and a smoke sensor; the environment monitoring host is used for acquiring and processing the environment data sent by each sensor in the sensor array to obtain an environment prediction result; and the rear-end monitoring terminal is used for displaying the environment prediction result, displaying the virtual environment model and providing a user interaction interface. According to the technical scheme, the digital twinborn technology is applied to environment monitoring, so that the environment monitoring data can be better displayed.

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

The invention discloses a self-adaptive calibration system and method for a combustible gas sensor. The self-adaptive calibration system and method are suitable for a catalytic combustion type combustible gas sensor. The system comprises a basic calibration unit, a real-time monitoring unit, a drift detection and compensation unit and an output adjustment unit. The basic calibration unit is used for carrying out basic calibration on the sensor and determining an initial sensitivity coefficient, zero offset and response time of the sensor; the real-time monitoring unit is used for monitoring real-time parameters of the sensor under different environmental conditions; the drift detection and compensation unit is used for establishing a sensor performance parameter drift model and calculating a calibration compensation coefficient; the output adjusting unit is used for adjusting the voltage output value of the sensor in real time according to the calibration compensation coefficient; the method can adapt to environment change for real-time calibration, effectively compensates sensor drift, improves measurement precision and reliability, prolongs the service life of the sensor, reduces maintenance cost, and improves system safety.

The invention provides a blast suppression method and system for an underground cavity of a pumped storage power station. The method comprises the following steps: configuring and deploying a multispectral gas sensor array; carrying out gas explosion limit calculation and risk assessment; calculating the risk level of explosion by using the prediction model; performing graded explosion suppression operation by using a graded explosion suppression execution module; combustible gas is guided to enter an inerting area by utilizing a space flow guide optimization module; and the ignition source blocking module is used for cooperative control to block an ignition source. The technical problems of low mixed gas explosion risk prediction and monitoring precision, low explosion suppression efficiency, slow response speed and relatively high operation and maintenance cost are solved.

The invention provides a factory energy safety dynamic monitoring method based on the Internet of Things and multi-mode perception, and belongs to the technical field of industrial Internet of Things. Comprising the following steps: acquiring electrical parameters, temperature data, combustible gas leakage concentration and vibration signals of equipment in real time; carrying out aggregation and protocol conversion on the electrical parameters, the temperature data, the combustible gas leakage concentration and the vibration signals through a multi-protocol intelligent gateway, and uploading the electrical parameters, the temperature data, the combustible gas leakage concentration and the vibration signals to a locally deployed edge computing node in a preset period; preprocessing the received data at the edge computing node, and generating a quantitative risk index based on a dynamic risk assessment model fusing the real-time state of the equipment, the historical aging trend and the environmental parameters; and carrying out risk grade judgment according to the quantitative risk index, and executing a corresponding grading response. Through fusion of multi-modal sensing data and edge intelligence, comprehensive sensing, real-time quantitative evaluation and hierarchical intelligent response of factory energy safety risks are realized.

The invention relates to the field of safety monitoring of power equipment, and provides an ultra-early-stage lithium ion battery thermal runaway early warning system which is applied to the interior of a battery prefabricated cabin. The data acquisition module is used for acquiring initial temperature rise change curve data, initial combustible gas concentration data, initial electrolyte volatile liquid data and initial particle number data in the charging process of the lithium ion battery; the data processing module is used for carrying out sorting and dimension reduction on the initial temperature rise change curve data, the initial combustible gas concentration data, the initial electrolyte volatile liquid data and the initial particle number data through a principal component analysis method to obtain lithium ion battery characteristic data; the fire-fighting prediction module is used for inputting the lithium ion battery characteristic data into the fire-fighting state evaluation model to obtain the current fire-fighting state of the battery prefabricated cabin; the early warning generation module is used for judging the thermal runaway state of the corresponding lithium ion battery based on the current fire-fighting state and generating early warning signals of different levels based on the thermal runaway state; and the early warning response module is used for taking corresponding safety measures according to the early warning signals of different levels. According to the invention, ultra-early warning of thermal runaway of the container type lithium ion battery is realized, corresponding safety measures can be taken in time, and occurrence of false alarms and missing alarms is effectively reduced.

The invention relates to the technical field of combustible gas detectors, in particular to a combustible gas detector with an underground Internet of Things function, which comprises a gas exchange seat, a mounting mechanism rotatably connected to the bottom of the gas exchange seat, a combustible gas detector main body fixedly mounted at the bottom of the gas exchange seat, and a fixing frame fixedly connected to the bottom of the gas exchange seat. A movable frame is arranged on the fixed frame in a sliding fit mode, a protective cover is rotatably connected to the interior of the movable frame, an automatic maintenance mechanism is rotatably connected to the movable seat, and in the using process of the combustible gas detector, dust on the surface of the gas sensor is cleaned and maintained regularly through the automatic maintenance mechanism; the dust on the surface of the gas sensor can be automatically cleaned by utilizing the brush frame which rotates and swings in a reciprocating manner, the sensor can accurately read the gas concentration, the possibility of false alarm and missing alarm is reduced, the manual cleaning frequency is reduced through an automatic maintenance mechanism, and the labor cost and the maintenance workload are reduced, so that the service life of the sensor is prolonged.

The invention discloses a combustible gas monitoring and early warning method and system based on the Internet of Things, and relates to the technical field of combustible gas monitoring, and the method comprises the steps: obtaining the construction design information of a target region, and carrying out the equivalent division and the deployment of Internet of Things equipment; m combustible gas sensing data streams are obtained through monitoring of a regional sensing network; the method comprises the following steps: building combustible gas analysis dual channels including a gas concentration analysis channel and an escape situation analysis channel; presetting a combustible gas safety threshold value, and carrying out early warning judgment on the combustible gas sensing data flow to obtain combustible gas parameters of the area to be subjected to early warning; and constructing a multi-stage linkage early warning mechanism, and performing linkage early warning control on the combustible gas parameters of the to-be-early-warned area. The technical problems that in the prior art, monitoring area division is unreasonable, dynamic factors are not considered in data analysis, and a hierarchical and zoned linkage strategy is lacked, so that the accuracy and timeliness of monitoring and early warning are poor are solved, and the technical effect of improving the timeliness and accuracy of combustible gas monitoring and early warning is achieved.

The invention discloses a solid oxide electrolysis reactor and system for producing hydrogen by coupling electrolytic water with combustible gas, the solid oxide electrolysis reactor comprises an anode end plate, an intermediate plate assembly and a cathode end plate which are connected in sequence, the intermediate plate assembly comprises a plurality of repetitive units, and the repetitive units are connected through connecting plates; the repeating unit comprises an electrolytic tank, the electrolytic tank comprises an anode, an electrolyte and a cathode, water vapor or a water vapor and hydrogen mixed gas is introduced into the cathode to generate an electrolyzed water reduction reaction to obtain hydrogen, and a combustible gas, water vapor and / or carbon dioxide mixed gas is introduced into the anode to generate hydrogen; and the combustible gas and oxygen ions which are generated by electrolyzing water at the cathode and are transmitted to the anode are subjected to deep oxidation reaction to obtain carbon dioxide. The cathode product gas is high-purity hydrogen or high-purity hydrogen obtained after condensation, the anode product gas is mixed gas of water vapor and carbon dioxide or mixed gas mainly comprising water vapor and carbon dioxide, and self-enriched high-concentration carbon dioxide can be obtained after condensation.

The invention discloses an experimental device and an experimental method for combustible gas explosion discharge of a communicating container, and belongs to the field of combustible gas explosion protection. The experimental device comprises a communicated discharge container, a gas distribution system, a high-voltage ignition system, a data acquisition system, a high-speed schlieren system and a synchronous control system. The experimental device and the experimental method can be used for experimental research on combustible gas explosion release of the communicating container; the influence rules of factors such as static action pressure (Pstat), discharge caliber (Dv), discharge coefficient (Kv), spherical explosion container volume ratio (V1 / V2), communication pipeline length (L), communication pipeline diameter (D), fuel gas equivalence ratio (phi), ignition position (IIn) and ignition energy (E) on flammable gas explosion discharge overpressure and discharge flame are analyzed; and the formation factors of internal and external discharge overpressure peak values (a peak value Pb formed by rupture of a discharge diaphragm, a peak value Pex formed by external secondary explosion, a peak value Ph formed by Helmholtz oscillation, a peak value Pac formed by sound wave coupling and a peak value Pred formed by a maximum flame area), a discharge gas cloud structure, a discharge flame form and an external pressure wave evolution rule are explored.

The invention provides a real-time fire monitoring and alarming system and method. The system comprises a multi-parameter sensing subsystem, an intelligent monitoring subsystem and a data transmission subsystem. The sensing subsystem is responsible for collecting environment temperature, smoke concentration and combustible gas concentration. And the intelligent monitoring subsystem comprises a central processing unit and an alarm decision module, dynamically adjusts an acquisition interval according to a data triggering monitoring mode, and gives an alarm in case of abnormality. The system initially sets an acquisition interval which is automatically adjusted along with environment change. And the user interface allows parameter adjustment and manual alarm, so that the flexibility and response speed of the system can be ensured.

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

The invention relates to the technical field of intelligent fire-fighting processing, in particular to an intelligent fire-fighting safety pre-judgment linkage management method and platform. The method comprises the following steps: collecting circuit data, and carrying out circuit abnormal characteristic analysis according to the circuit data to generate circuit abnormal characteristic data; collecting environment infrared spectrum monitoring data; combustible gas leakage characteristic analysis is carried out based on environment infrared spectrum monitoring, and combustible gas leakage characteristic data are generated; collecting water testing operation monitoring data of the fire hydrant; fire hydrant abnormal characteristic analysis is carried out based on the fire hydrant water test operation monitoring data, and fire hydrant abnormal characteristic data are generated; performing data linkage processing on the circuit abnormal characteristic data, the combustible gas leakage characteristic data and the fire hydrant abnormal characteristic data to generate abnormal fire fighting linkage data; and performing fire-fighting safety pre-judgment demand evaluation on the abnormal fire-fighting linkage data to generate fire-fighting safety pre-judgment demand data. According to the invention, through linkage analysis of fire-fighting data, efficient fire-fighting safety pre-judgment management is realized.

The utility model discloses a methanol storage cabin with isolated void cabins, which comprises a methanol fuel ship main body, a methanol storage cabin and a methanol daily cabin are arranged in the methanol fuel ship main body, the isolated void cabins are arranged around the methanol daily cabin, an inert gas generator is further arranged in the methanol fuel ship main body, and the inert gas generator is connected with the isolated void cabins. The methanol storage cabin is arranged in the methanol fuel ship main body, a hydraulic deep-well pump is arranged in the methanol storage cabin, pressure sensors are arranged in the methanol storage cabin and the methanol daily cabin, the methanol storage cabin is arranged in the methanol fuel ship main body, and an isolation void cabin is arranged around the methanol storage cabin. An inert gas generator and an inert gas storage box are arranged in the methanol fuel ship main body, the inert gas storage box is communicated with the isolation void through a third gas conveying pipe, and inert gas is filled into the isolation void through the inert gas storage box, so that the concentration of combustible gas in the isolation void is lower than the lower limit explosion concentration of methanol.

The invention belongs to the technical field of refrigerants, and provides a mixed refrigerant for replacing R290 and a preparation method and application thereof, the mixed refrigerant comprises a first component, a second component and a third component; the first component is trans-1, 2-difluoroethylene, the second component is 2, 3, 3, 3-tetrafluoropropene, and the third component is trifluoromethyl methyl ether; compared with R290 refrigerants in the prior art, the mixed refrigerant has the advantages that flammable and explosive components do not exist, and high-risk combustible gas clusters cannot be formed due to density layering after leakage, so that the mixed refrigerant has high safety performance, and the safety level can be not lower than A2L; the mixed refrigerant has the environment-friendly characteristic of low GWP, the GWP is smaller than or equal to 150, and the environment-friendly requirement is met; the thermophysical property and the refrigeration and / or heating cycle performance of the mixed refrigerant are similar to or better than those of R290; the mixed refrigerant can be used for directly replacing an R290 refrigerant.

An energy storage system includes an enclosure having a vent forming a flow path between an interior volume of the enclosure and an environment exterior to the enclosure. A vent covering is mounted proximate the vent and is selectively disposable over the vent such that the flow path is open when the vent covering is in an open position and closed when the vent covering is in a closed position. The vent covering can be biased to the open position and / or made of a thermally decomposable material. An actuator is coupled to the vent covering such that supply of power to the actuator causes the vent covering to assume the closed position and loss of power to the actuator causes the vent covering to assume the open position. A method comprises detecting a flammable gas and opening a first flow path by a first vent of the enclosure.

The invention discloses a combustible gas intelligent detection system and method based on a mobile robot. The system comprises an environment sensing module, a combustible gas detection module and a data analysis module. The environment sensing module obtains environment three-dimensional and gas concentration distribution data, carries out fusion processing to obtain an environment data set, constructs a three-dimensional model containing barrier and gas diffusion characteristics, and generates an inspection path based on the model by using a multi-objective optimization algorithm. The combustible gas detection module constructs a dynamic task adaptation model according to detection task requirements, generates a detection scheme based on an inspection path, and drives a mobile robot to execute detection to obtain multi-dimensional detection data. The data analysis module generates a gas risk detection report using an LSTM model based on the multi-dimensional detection data.

The invention relates to the technical field of fire prevention and control, and provides an explosion-proof detector and a battery compartment comprising the explosion-proof detector, the explosion-proof detector is used for detecting gas concentration in an explosive environment, the explosion-proof detector comprises a shell, a detection piece and an integrated piece, the detection piece and the integrated piece are arranged in the shell, the detection piece is arranged close to the inlet end of the shell, and the integrated piece is arranged close to the outlet end of the shell. A sensor capable of detecting the concentration of at least two combustible gases is arranged on the detection part and used for detecting the concentration of the at least two combustible gases entering the shell, and the integrated part is electrically connected with the detection part and used for collecting combustible gas concentration information detected by the detection part and transmitting the combustible gas concentration information to the controller. The explosion-proof detector can integrate detection of various combustible gases, reduces installation points, saves space, simplifies the installation process and concentrates information processing, realizes efficient, simple, convenient and safe combustible gas concentration monitoring, and is suitable for safety monitoring requirements in an explosive environment.

The invention discloses a gas leakage process dynamic parameter-based limited space combustion explosion consequence prediction method. The method comprises the following steps of: acquiring concentration and speed segmentation time sequence data in every delta t time period from gas leakage in each working condition; forming a three-dimensional primary ignition source array, and simplifying the ignition source array according to a blasting numerical simulation result; obtaining a maximum temperature field data set, a static pressure field data set and a dynamic pressure field data set on a typical section in the burning and explosion process; mapping the concentration and speed segmented time sequence data set to a maximum temperature field, static pressure field and dynamic pressure field data set to obtain a combustible gas leakage explosion result prediction data set, preliminarily establishing a combustion explosion result prediction model, and training; and collecting gas leakage concentration and speed time sequence data in the limited space, and inputting the data into the combustion explosion consequence prediction model to obtain a temperature, static pressure and dynamic pressure maximum value field in the combustion explosion process. According to the invention, automatic prediction of the maximum overpressure, the dynamic pressure and the temperature field in the explosion process after combustible gas leakage in a real-time or super-real-time limited space is realized, and the prediction result is accurate.

The invention relates to the technical field of submarine oil and gas pipeline leakage risk assessment, in particular to a submarine oil and gas pipeline leakage risk assessment and early warning method, an electronic device and a storage medium. The submarine oil and gas pipeline leakage risk assessment and early warning method comprises the following steps: acquiring first monitoring data through a sensor network deployed on a submarine oil and gas pipeline, determining a leakage section through the first monitoring data, and acquiring second monitoring data through a buoy sensor network deployed on the sea surface; constructing a feature vector and a deep neural network model, inputting the first monitoring data into the deep neural network model, and outputting first simulation leakage data; the method comprises the steps of constructing a pipeline physical model through design parameters and environmental conditions of submarine oil and gas pipelines; based on the first simulation leakage data and a pipeline physical model, second simulation leakage data are obtained through computational fluid dynamics (CFD) simulation; correcting the deep neural network model until the difference between the second monitoring data and the second simulated leakage data is within a set difference value by comparing the difference between the second monitoring data and the second simulated leakage data; constructing an offshore gas disaster analysis model by taking the simulated oil and gas leakage area as a boundary to obtain combustible gas cloud space distribution data; and calculating a comprehensive disaster risk index according to the combustible gas cloud space distribution data, and dividing risk grades according to the comprehensive disaster risk index for early warning. According to the method, the leakage point can be accurately identified, and intelligent risk early warning and evaluation are realized.

The invention discloses an operation method and system for distributed organic solid waste centralized treatment and quality improvement and application, and relates to the field of chemical engineering, the operation method comprises the following steps: respectively carrying out pyrolysis treatment on organic solid waste distributed in different areas to obtain combustible gas and solid combustible materials and / or pyrolysis oil, using the combustible gas as fuel for pyrolysis treatment, and using the solid combustible materials and / or pyrolysis oil for pyrolysis treatment; the solid combustible comprises carbon powder and / or pyrolysis residues; concentrating and gasifying the solid combustibles and / or pyrolytic oil obtained in different areas to obtain mixed gas, dedusting the mixed gas, and converting the dedusted mixed gas by using water vapor to obtain a hydrogen crude product; purifying the hydrogen crude product to obtain a hydrogen product; packaging, storing or conveying the hydrogen product; the method solves the problem that large-scale industrial treatment and economic benefit improvement are difficult to realize due to the fact that the organic solid waste in a distributed area or a remote area has the characteristics of multiple types, small quantity, dispersive distribution, high transportation, recovery and treatment cost and the like.

The invention discloses a mine microalgae carbon sequestration emission reduction and resource recycling system. The system comprises eight modules including a microalgae culture and closed pipeline photobioreactor microalgae culture module, a CO2 capturing and conveying module and a microalgae after-harvesting and processing module. The prepared culture medium and CO2 captured by an air return way are injected into a closed pipeline photobioreactor through a conveying pipeline, and the closed pipeline photobioreactor is provided with various sensors. Monitoring data are uploaded to the intelligent data analysis and optimization module for analysis and processing, and solution filling and environment parameters are intelligently adjusted through the intelligent monitoring and automatic control module; and collecting combustible gas generated by anaerobic fermentation of the microalgae, processing the primarily screened microalgae, and filtering the mine wastewater. According to the method, efficient culture of mine microalgae, efficient emission reduction and resource utilization of CO2 in a mine return airway and cyclic utilization of wastewater can be achieved, the green and low-carbon sustainable development concept is met, and a new solution is provided for the technical field of mine carbon dioxide emission reduction.

The invention relates to a high-flame-retardant, high-thermal-conductivity and high-toughening epoxy resin packaging adhesive and a preparation method thereof. A self-developed flame retardant containing nitrogen, phosphorus and sulfur is added into an epoxy resin system, rich carbon residues hinder mass and heat exchange in the combustion process and also hinder combustible gas from being released to a combustion area, free radicals containing phosphorus and sulfur can capture active free radicals (H * and OH *), and the chain reaction of combustion is ended. The surface modifier is used for modifying the layered graphene composite boron nitride micro-powder heat-conducting filler, so that the interface interaction between the filler and the resin matrix is synergistically enhanced, and the compatibility and the heat-conducting effect of the filler and the resin matrix are improved. And the modified toughening agent is added to ensure that the epoxy resin packaging adhesive has good toughness. In addition, through further exploration and innovation, the specific proportion range of the nitrogen-phosphorus-sulfur flame retardant, the modified layered graphene composite carbon nitride micro powder and the flexibilizer is determined. The epoxy resin packaging adhesive prepared by the invention has excellent flame retardance, heat conductivity and toughness.

The invention relates to a hydrogen safety rapid early warning method based on hydrogen micro leakage judgment. The early warning method comprises the following steps: acquiring technological process information of a hydrogen refueling station system, and carrying out hazard source identification to obtain a hazard source identification result; a risk point where hydrogen leakage is likely to happen in the hydrogen refueling station is determined, and a combined criterion of the hydrogen concentration change rate, the hydrogen concentration sudden change value and the hydrogen concentration threshold value is formulated; carrying out a hydrogen leakage test, and determining a parameter threshold value of a hydrogen leakage criterion; and obtaining a fault state operation parameter change rule, and positioning hydrogen leakage so as to realize rapid early warning of hydrogen leakage. Compared with the prior art, the micro leakage test and the fault state operation parameter test are combined, the leakage alarm is realized at the hydrogen micro leakage stage, and the safety of the hydrogen related system can be improved to a great extent. The method is not only suitable for rapid early warning of hydrogen leakage of a hydrogen related system, but also suitable for leakage early warning of other toxic gases or combustible gases, and has wide application scenarios.

The invention relates to the technical field of silicone rubber, and discloses flame-retardant and heat-insulating silicone rubber and a preparation method thereof.The flame-retardant and heat-insulating silicone rubber is obtained by reacting a flame-retardant aid with hollow glass beads and then adding the reaction product, methyl vinyl silicone rubber, hydroxyl silicone oil, a reinforcing agent, a flame retardant and a vulcanizing agent into an open mill to be mixed and vulcanized. The flame-retardant auxiliary agent contains a siloxane structural unit and is grafted on the surfaces of the hollow glass beads, so that the compatibility between the flame-retardant auxiliary agent and the methyl vinyl silicone rubber is improved, the hollow glass beads are more uniformly dispersed in a silicone rubber matrix, a uniform heat insulation network is formed, the heat conductivity is reduced, and the heat insulation performance is improved. The flame-retardant auxiliary agent contains nitrogen-rich triazine groups, and generates nitrogen and other non-combustible gases during combustion, so that the oxygen concentration of the combustion atmosphere can be diluted, and the limit oxygen index, flame retardance and high-temperature resistance of the silicone rubber are improved.

The utility model discloses a closed furnace system for converting household garbage incineration into new energy fuel gas, which comprises an incinerator, a scrubber tower, a cooling filter, an oil smoke and water vapor separation tower, a tar filter and a combustible gas decomposition purifier, the incinerator comprises a furnace body, and an incineration chamber for garbage incineration and a secondary combustion chamber for flue gas heating are arranged in the furnace body. Flue gas is led out from the secondary combustion chamber through a high-pressure induced draft fan and sequentially enters a scrubber tower, a cooling filter and an oil smoke and water vapor separation tower, a calcium carbonate solution is sprayed in the scrubber tower to conduct desulfurization and dust removal on the flue gas, the cooling filter conducts cooling and filtering on the flue gas, and the oil smoke and water vapor separation tower decomposes moisture and tar in the flue gas. The flue gas is sequentially connected into a tar filter and a combustible gas decomposition purifier through a Roots machine, an oil gas filter is arranged in the tar filter to filter tar in the flue gas, and a purification layer is arranged in the combustible gas decomposition purifier to remove foreign gas in the flue gas and purify the flue gas into new energy fuel gas. The method has the characteristic of efficient and environment-friendly garbage treatment.

The invention relates to the technical field of batteries, and provides a battery protection plate integrated with combustible gas regulation and control, a preparation method thereof and a battery module, and the battery protection plate integrated with combustible gas regulation and control comprises a porous heat insulation base material; the phase change hydrogel is adsorbed in the porous structure of the porous heat insulation base material; the aerogenesis flame retardant layer is arranged on the surface of at least one side of the porous heat insulation base material; and the packaging film is arranged on the outer sides of the aerogenesis flame retardant layer and the porous heat insulation base material and is used for packaging the porous heat insulation base material and the aerogenesis flame retardant layer. The battery protection plate integrated with combustible gas regulation and control can uniformly heat under the normal working condition of the battery, so that local overheating in the battery is avoided; when the battery is in thermal runaway, the temperature of the battery can be reduced and the detonation risk can be reduced.