617results about "Chemical analysis using combustion" patented technology

The invention provides a portable fire blast risk dynamic identification and danger tracing method and terminal, and the method comprises the steps: collecting positioning data in real time through a GNSS positioning module; a high-speed analog-to-digital conversion chip ADC is used for carrying out high-frequency and synchronous processing on the gas concentration collected in real time; collecting field environment parameters in real time; performing dynamic threshold intelligent judgment to obtain a leakage judgment result, and executing a grading early warning mechanism; recording an inspection track in real time, and carrying out space gas concentration gradient analysis to obtain a gas concentration gradient; calculating a built-in space distance; judging the leakage direction according to the gas concentration gradient data, and intelligently tracing the leakage source according to the leakage judgment result; and uploading the security data to the cloud. According to the invention, the limitation of static and single-threshold alarm of an instrument is solved, and the technical problems of difficulty in spatial continuous sensing and automatic tracing positioning of gas leakage abnormity in a complex inspection environment with dynamic changes of multi-component combustible gas and environmental parameters are solved.

The invention relates to the technical field of fire reason investigation, and particularly discloses a heat radiation test device with an adjustable test rack, which comprises a heat radiation rack and a test rack, a radiation source is mounted on the heat radiation frame; the test rack is in a portal shape, the left end and the right end of the test rack are sleeved with sliding supports with the adjustable height respectively, and locking assemblies are installed on the sliding supports. The device further comprises a horizontally-arranged rotating rod, the two ends of the rotating rod are connected to the two rotating rods correspondingly, and a rotating assembly is installed on the rotating rod and rotates in the circumferential direction of the rotating rod. A fixing frame is installed on the rotating assembly and used for fixing a sample. The effect of adjusting the overall height of the fixing frame is achieved by adjusting the height of the sliding support, the angle of the fixing frame is adjusted through the upper rotating assembly, a sample can face a radiation source at different angles to conduct a heat radiation test, and an operator can more accurately simulate the state of the sample to test data according to post-disaster data.

The invention relates to the technical field of protective clothing testing, and discloses a protective clothing combustion testing device based on an intelligent sensor, which comprises a control console, a testing cabinet is arranged on the control console, a simulation mechanism for simulating real motion is arranged on the inner wall of the testing cabinet, and an exhaust mechanism for ventilation is arranged on the inner wall of the testing cabinet. According to the device, in the rotating process of the fire protection clothing, it can be ensured that heat flow of subsequent flame testing is uniform, testing and detection are free of dead corners, the real wearing state is simulated, the flame testing quality of the device on the fire protection clothing is improved, the testing combustion precision of the device on the fire protection clothing is improved, and the testing efficiency is improved. And meanwhile, a temperature sensor on the surface of the human body model can test the internal temperature of the fire protection clothing, all-directional combustion test detection of the device on the fire protection clothing can be improved through rotary movement of a flame gun, and the combustion test effect of the device is improved.

The invention discloses a megawatt pressurized bubbling fluidized bed oxygen-enriched combustion test platform and a combustion method. The platform comprises a feeding system, a pressure swing adsorption oxygen production and gas inlet system, a deslagging system, an oxygen-enriched combustion reaction system and a flue gas and fly ash sampling treatment system. The feeding system adopts a spiral and star-shaped double-path independent pressure feeding unit, and is provided with a multi-stage stock bin, a drying device and a pipeline cooling structure, so that pressurized continuous feeding is realized, and tempering is prevented; the pressure swing adsorption oxygen generation and gas inlet system generates oxygen-enriched gas through a PSA technology, and the oxygen-enriched gas is mixed with CO2 to form a graded oxygen-enriched atmosphere; according to the oxygen-enriched combustion reaction system, accurate temperature control is achieved through an air distribution plate, a reducer pipe and a partition heat exchange device, and generation of NOx is restrained; the problems of unstable fuel supply, unreliable deslagging, low combustion efficiency, difficulty in CO2 enrichment and the like under the high-pressure oxygen-enriched combustion condition in the prior art can be effectively solved.

The invention relates to a hazardous chemical substance cabinet explosion-proof performance detection system based on an aerosol test and a detection method thereof, and belongs to the technical field of hazardous chemical substance cabinet detection.The hazardous chemical substance cabinet explosion-proof performance detection system comprises a detection control platform, an aerosol supply module, an environment simulation module, an ignition trigger module, a multi-modal data acquisition module, a sealing performance verification module and a hazardous chemical substance cabinet to be detected; the detection control platform comprises a main controller, a data acquisition unit, a human-computer interaction interface and a data storage and processing unit and is a central control and data processing core of the system, and the aerosol supply module is communicated with an inner cavity of the to-be-detected hazardous chemical substance cabinet through a pipeline. According to the invention, the assessment dimension is comprehensive and is close to the actual working condition, the structural integrity and explosion suppression performance of the cabinet body under the combined action of the explosion shock wave and the flame load can be comprehensively assessed by simulating the internal explosion and synchronously acquiring the pressure and image data, the assessment dimension is more comprehensive, and the result can better reflect the real explosion-proof capability of the cabinet body.

The invention provides a gas compressor blade titanium fire friction test device and test method. The gas compressor blade titanium fire friction test device is used for testing the flame retardant property of a blade sample piece of a gas compressor, and is characterized by comprising a first rotating piece, a second rotating piece and a friction piece, wherein the friction piece is arranged on the first rotating piece; the blade sample piece is assembled on the second rotating piece, and the blade sample piece and the friction piece are arranged to be opposite to each other; the first rotating part can rotate in a first direction, and the second rotating part can rotate in a second direction opposite to the first direction; in the rotating process of the first rotating piece and the second rotating piece, the friction piece makes contact with the blade sample piece, and then the blade sample piece is rubbed. The test device can better simulate the working environment of the high-pressure compressor.

The utility model belongs to the field of combustion testing device, specifically is a kind of granular biomass fuel combustion testing device, including combustion cylinder, the combustion cylinder outside is fixedly connected with support disc, the support disc outside is fixedly connected with four first support leg, the first support leg bottom is fixedly connected with mounting disc, the mounting disc outside is fixedly connected with four second support leg.The utility model is supported to first bearing disc by first limit ring, and first bearing disc and inner tooth ring are connected together by connecting cylinder, then the granule is supported by first bearing disc, and the granule is supported by second bearing disc and third bearing disc, simultaneously, the granule can also be opened by breathable conical cylinder, so that the granule internal does not completely present coincidence condition, and the granule internal can also be ventilated by breathable conical cylinder, so as to guarantee that granule can burn more fully, to guarantee that the data of granule combustion can be more accurate.

The invention discloses an effect detection method, a storage medium and a detection system for a flame-retardant car cover, and the method comprises the steps: obtaining the parameter information of the car cover; determining vehicle information matched with the vehicle cover and a corresponding use scene according to the parameter information of the vehicle cover; determining an initial coverage area of the vehicle cover for the vehicle according to the vehicle cover information and the vehicle information; determining first damage information of the car cover according to the use scene; and according to the use scene and the first damage information, second damage information of the initial coverage area is determined, and the first damage information and the second damage information are stored as at least part of detection results of the car cover. According to the technical scheme, the detection distortion degree of the protection effect of the flame-retardant car cover can be reduced, and the detection precision can be improved.

The utility model discloses a constant-volume combustion chamber structure which comprises a combustion chamber body, and an air inlet and an air outlet are formed in the two sides of the combustion chamber body. The air inlet comprises an air inlet channel and a guide flow velocity distribution opening, and the air inlet channel communicates with the combustion chamber body through the guide flow velocity distribution opening. According to the utility model, a straight-through type air inlet is changed into a circulation diffuse type air inlet, a plurality of groups of guide flow velocity distribution ports are arranged at the end part of the air inlet channel according to the direction relationship between the air inlet and the exhaust port, and the proportional relationship of the diffuse velocity in different directions is adjusted, so that the guide and flow velocity distribution of the air inlet are controlled; compressed air can be integrally and gently propelled when being injected, so that waste gas is quickly exhausted from the exhaust port, vortex cannot be generated in the combustion cavity in a penetrating manner, combustion residues cannot block the guide flow velocity distribution port, the test time is effectively shortened, the compressed air consumption is reduced, and the test cost is reduced.

This invention relates to the field of sulfur content detection technology, specifically providing a method for determining the sulfur content in pure copper using an infrared carbon-sulfur analyzer. The method includes crucible pretreatment, preparation of analytical materials, and analytical steps, specifically: 1) Crucible pretreatment: S1, placing the ceramic crucible in a muffle furnace for ignition; S2, removing the ceramic crucible, allowing it to cool, and then placing it in a desiccator containing color-changing silica gel; S3, putting the ceramic crucible into use; 2) Preparation of analytical materials: pure copper sample, low-sulfur standard sample; 3) Analyzing the sulfur content in pure copper. This method selects the optimal flux, uses a standard sample from steel as a low-sulfur standard for standardization calibration, and uses tungsten flux, solving the problem of rapid determination of sulfur content in pure copper. This method features simple analytical steps, fast analysis speed, and high accuracy, providing reliable technical support for the smelting, application, and quality control of pure copper, and effectively supporting scientific research and specialized production work.

According to the unitary / binary combustion and explosion characteristic discrimination method and system for the urban combustible gas, gas concentration information and real-time environment parameters which can be monitored on site are utilized, a steam combustion and explosion characteristic test data set of the combustible gas is constructed through a combustion and explosion characteristic test, and a combustion and explosion characteristic prediction model is established based on the data set; rapid, accurate and comprehensive prediction of the combustion and explosion characteristics of the steam mixed gas of the combustible gas is realized, the combustion and explosion risk is calculated according to the combustion and explosion characteristics, and intelligent risk early warning is realized. According to the method, through a one-time integration method based on reinforcement learning, the distribution weights of multiple base learners in the machine learner group and the deep learner group are adaptively optimized, so that the prediction precision of the two types of learner groups is optimized. Through a quadratic integration method based on a multi-modal attention mechanism, original input features, model uncertainty, model historical performance and other aspects are fused, weights are further allocated to the two types of learning device groups, and respective advantages of the two types of learning device groups are fused to realize prediction result optimization.

The invention discloses a matching device for fire resistance testing and an operation method. The matching device comprises a fire resistance testing furnace, a fire resistance testing frame and a moving trolley used for transferring the fire resistance testing frame. The fire-resistant test frame is used for setting a tested sample; a plurality of supporting columns are arranged on the fire resistance test frame; a supporting piece is arranged on the fire-resistant test furnace and is used for conveniently fixing or separating the fire-resistant test frame supporting column; the mobile vehicle comprises a vehicle body device, a wheel device, a supporting structure and a fixed bracket device; the wheel device is arranged below the vehicle body device and used for transferring the position of the vehicle body device; the supporting structure is arranged on the vehicle body device and is used for supporting the fire resistance test frame; the fixed bracket device is arranged on the vehicle body device and comprises a fixed bracket, and the fixed bracket is used for supporting a supporting column of the fire resistance test frame. According to the matching device and the operation method, the safety and the high efficiency of the fire resistance testing process of the tested sample can be improved.

The utility model relates to the technical field of electric wire and cable experiment devices, in particular to an electric wire and cable flame-retardant and fire-resistant experiment device which comprises a box body, a clamping assembly, a combustor, a box door and a front baffle plate, and further comprises a heat insulation plate, a fan and a filter screen, the upper part of the front end of the box body is rotatably connected with the box door, and the lower part of the front end of the box body is provided with the front baffle plate; a lifting control assembly is installed in the box body, clamping assemblies which are symmetrically distributed up and down are installed at the right end of the lifting control assembly, a sliding adjusting assembly is installed at the front end of a back plate of the box body, a rotating locking mechanism used for adjusting the angle of the combustor is arranged at the front end of the sliding adjusting assembly, and limiting seats are fixedly connected to the inner walls of the left side and the right side of the box body; according to the utility model, the rapid clamping and straightening of the cable can be realized, the test requirements of cables with different diameters can be met, the horizontal position, height and inclination angle of the combustor can be flexibly adjusted, harmful smog and particulate matters generated by combustion can be effectively filtered, and the internal temperature of the box body can be rapidly reduced after the experiment is finished.

The invention provides a flooring material critical radiation flux automatic calculation and determination method, which is realized based on special computer software and can automatically read historical data of a radiation flux curve or record a new radiation flux value of a simulation sample to create a new radiation flux curve. In the test process, the radiation flux values of the flooring material sample for testing under different flame propagation distances can be automatically calculated, the critical radiation flux value can be determined, and the conformity of the critical radiation flux data can be judged according to related product standards. Compared with a traditional human work diagram calculation method, the method can meet the requirement of the standard for the calculation precision of the radiation flux result, the calculation process can be traced, the calculation of the radiation flux result can be automatically achieved, the calculation efficiency is high, and whether the result meets the requirement of the related product standard or not can be automatically judged after calculation is completed.

The invention relates to the technical field of fireproof glass testing devices, in particular to a fireproof glass strength testing device which comprises a furnace body, a furnace cover and a plurality of flame spray guns, a fixed frame is arranged in the furnace body, and a first protective shell and a second protective shell are mounted at the top of the fixed frame through an adjusting mechanism; a glass mounting seat is arranged in the fixed frame body, and a residue collecting box is arranged at the bottom of the fixed frame body. According to the scheme, through the residue collecting box arranged at the bottom of the fixed frame body, falling glass fragments and melts can be directly received in the testing process. And after the test is finished, the collecting box can be automatically moved out of the furnace and overturned and dumped by utilizing the pushing mechanism and the gear-rack linkage mechanism, so that the safe, convenient and automatic cleaning of residues is realized, the labor intensity and the risk of workers are greatly reduced, and the inner wall of the furnace body is effectively protected.

The application discloses a kind of ammonia coal mixed combustion test system and its multi-working condition operation method.Belongs to fuel clean combustion technical field, including the experimental furnace body with main combustion zone, reduction zone and burn-out zone, and adjustable center ammonia pipe coaxially arranged in the center of burner;The center ammonia pipe is provided with axial telescopic adjusting mechanism and detachable spray head, and the position of nozzle can be continuously adjusted from main combustion zone to reduction zone.System is equipped with coal gasification chamber and multi-fuel feeding unit, and can independently supply pulverized coal, volatile matter, coal coke and ammonia respectively.The application realizes the staged and zoned reaction simulation of pulverized coal, volatile matter, coal coke and ammonia by decoupling the pyrolysis and combustion process of coal, can carry out three experimental modes of coal and ammonia mixed combustion, volatile matter and ammonia homogeneous phase reaction, coal coke and ammonia heterogeneous phase reaction, and has multiple operation control functions.Provides a compact structure, strong working condition adaptability test platform for in-depth study of ammonia coal mixed combustion mechanism and optimization of low-nitrogen combustion process.

The invention discloses a dynamic measurement system for the ablation rate of a thermal protection material of an aircraft under high-temperature fuel gas. The dynamic measurement system comprises a sample placement unit, a fuel gas generation unit, laser displacement equipment and a data acquisition and processing system, the sample placement unit is used for placing a thermal protection material sample piece, the fuel gas generation unit comprises a fuel gas generator, and a flame nozzle of the fuel gas generator is used for being aligned with the surface of the thermal protection material sample piece; the laser displacement equipment dynamically captures displacement change signals of surface retreating of the thermal protection material sample piece under the action of the fuel gas generator; and the data acquisition and processing system calculates the dynamic ablation rate of the thermal protection material under the high-temperature fuel gas according to the displacement change signal. The laser displacement equipment is matched with a data acquisition system to finish dynamic acquisition of the retreat amount and calculation of the dynamic ablation rate, a dynamic measurement system is established, and the problems that the ablation rate of the thermal protection material cannot dynamically respond to changes and the accuracy of an ablation model prediction result is low when traditional static measurement is adopted at present are solved.

The invention discloses a power battery external burning test system and method. The power battery external fire test system comprises a test execution unit used for executing a power battery system external fire test, and the test execution unit comprises a water tank internally used for storing water for fire extinguishing and a test platform arranged in the water tank, controlled to ascend and descend and used for carrying a tested power battery. After the test platform descends to a preset position, the power battery on the test platform can be immersed into water; the cover box is matched with the test platform and used for covering the power battery in the test, a water mist fire extinguishing device used for extinguishing after the test is ended is mounted on the cover box, the combustion module is used for burning the outside of the power battery after ignition, and the ignition device is used for igniting the combustion module. Compared with an existing external fire test system, the device is more suitable for the combustion working condition when the whole vehicle is on fire, and the test result has higher reference value.

The utility model relates to the field of plastic particle detection, and discloses a modified plastic particle detection device which comprises a detection box, a connecting disc is fixedly connected to the top of the inner wall of the detection box, an adjusting mechanism is arranged in the connecting disc, and the adjusting mechanism comprises a two-way screw rod, a knob and a fixing rod. A switching mechanism is arranged at the bottom of the connecting disc, a fixing mechanism is arranged on the switching mechanism, a moving block is in threaded connection with the outer wall of the two-way screw rod, the switching mechanism comprises a limiting rod, the limiting rod is fixedly connected with the bottom of the moving block, and a connecting box is slidably connected with the outer wall of the limiting rod. According to the utility model, the limiting rod is in sliding connection with the connecting box, and the fixing block is matched with the clamping block through the clamping groove, so that rapid and stable connection and separation of the connecting box and the limiting rod are realized, supporting blocks can be conveniently and rapidly switched in detection, emergency situations such as particles adhered to the outer fixing rod can be handled, and continuous and efficient detection can be guaranteed.

The invention relates to the field of fuel combustion, in particular to an experimental system and a measuring method for cooling and coking characteristics of high-temperature cracked hydrocarbon fuel, physical separation is realized by designing a high-temperature cracking section and a cooling and coking section, and the problem of experimental result mixing caused by coupling of the high-temperature cracking section and the cooling and coking section in a traditional experiment is effectively avoided. According to the separation design, coke generation characteristics in the cooling stage can be independently researched, and the device can flexibly simulate various high-temperature and cooling conditions in actual working conditions by accurately controlling experimental conditions such as the flow rate, the temperature and the pressure of the fuel / condensation medium, and is suitable for researching coking behaviors of various types of fuels.

The application provides a method for rapidly distinguishing coal rock sedimentary environment by using ash yield and total sulfur content, comprising the following steps: drawing an ash yield-total sulfur content relationship diagram of coal rock; obtaining ash yield data and total sulfur content data of a coal rock sample to be measured; and explaining the sedimentary environment of the coal rock sample to be measured according to the position area of the ash yield data and the total sulfur content data of the coal rock sample to be measured on the ash yield-total sulfur content relationship diagram. The application distinguishes the sedimentary environment of the coal rock sample to be measured according to the position area of the ash yield data and the total sulfur content data of the coal rock sample to be measured on the ash yield-total sulfur content relationship diagram. The distinguishing method of the application is simple in steps, can clearly and intuitively make an efficient judgment on whether the peat bog type in the coal rock sedimentary environment is affected by marine transgression, the test data is convenient to obtain, is not affected by subjective factors, and the distinguishing result is relatively accurate.

The application discloses a kind of multi-stage linkage explosion venting test methods combined with powdery combustion inhibitor, it is related to explosion-proof engineering and safety detection technical field;The method is by constructing with explosion venting device, ignition system, powdery inhibitor delivery system and pressure and optical sensor test cabin, uses PLC to realize ignition, pre-delivery, pressure relief trigger, synchronous inhibition and afterflame inhibition and so on multi-stage linkage control;And through pressure, temperature and flame sensor real-time acquisition of multi-dimensional data of explosion process;By before ignition, ignition instant and in the process of pressure relief with different doses of powdery inhibitor, the explosion suppression performance under different linkage strategies can be systematically evaluated;The application can simultaneously obtain peak pressure, pressure rise rate, flame propagation speed and re-burning conditions and other multi-parameters, realize the quantitative evaluation of the explosion suppression efficiency of powdery combustion inhibitor under multi-stage linkage explosion venting conditions, with the advantages of good data integrity, strong repeatability and suitable for standardization explosion-proof test method construction.

The embodiment of the invention discloses a temperature rise method of an in-situ transmission electron microscope heating chip for simulating ignition powder combustion, relates to the technical field of heating chips, and can accurately simulate the temperature change in the ignition powder combustion process. The method comprises the steps that the relation between the temperature and time in the ignition powder combustion process is determined; according to the relationship between the temperature and the current in the heating process of the heating chip of the in-situ transmission electron microscope, determining the relationship between the current and the time of the heating chip in the process of simulating the combustion of the ignition powder; configuring a circuit system of the heating chip by using the relationship between the current and the time; a temperature measuring piece is arranged on the heating chip, and a circuit system of the heating chip can adjust the current of the heating chip according to the temperature measured by the temperature measuring piece. The method is suitable for an in-situ transmission electron microscope simulation ignition powder combustion scene.

This invention provides a device and method for real-time assessment of combustion toxicity based on dynamic airflow analysis. The device includes a combustion generator, a mixing chamber, a gas analysis system, an air source, and a data processing and control system. The combustion generator is used to thermally decompose the sample and generate combustion flue gas. One end of the air source is connected to the first air inlet of the combustion generator, and the other end is connected to the air inlet of the mixing chamber. The first air outlet of the combustion generator is connected to the second air inlet of the mixing chamber via a first pipeline. The second air outlet of the mixing chamber is connected to the first end of the gas analysis system. The air source can supply air to the combustion generator and the mixing chamber to generate a test atmosphere of a specific concentration, which is then monitored and evaluated in real time by the gas analysis system. By changing the test parameters, various decomposition conditions can be simulated, and information such as gas concentration and toxicity index can be provided online in real time, thereby evaluating the combustion toxicity of non-metallic materials.

The utility model discloses a fire resistance test device for fireproof wire and cable production, which comprises an object placing plate and a fixed box, flamethrowers are uniformly and fixedly connected in the fixed box, conductive clamps are uniformly and fixedly connected at one side of the object placing plate, illuminating lamps are connected in series at one sides of the conductive clamps through wires, V-shaped grooves are uniformly arranged on the fixed box, and the V-shaped grooves are communicated with the V-shaped grooves. The fixing box is provided with a slot in the V-shaped groove, one side of the fixing box is in contact with a sealing cover, one side, close to the fixing box, of the sealing cover is evenly and fixedly connected with clamping plates, the clamping plates are provided with V-shaped recesses, the fixing box is fixedly connected with an upper protrusion, and one side, close to the fixing box, of the upper protrusion is in contact with a lower protrusion. The V-shaped grooves and the slots are uniformly formed in the upper side of the fixed box and are matched with the clamping plates and the V-shaped recesses on the sealing cover, so that electric wires and cables with different diameters can be limited, then the electric wires and cables are connected with a power supply, a conductive clamp and an illuminating lamp, and meanwhile, the flame projector provides combustion conditions, can provide fire resistance detection and provides a comparison effect.

The utility model discloses a comprehensive fire resistance test device which comprises a furnace body, a fire spraying pipe group, a temperature detector, a pressure detector, an exhaust port and a water cooler, the inner wall of the furnace body is made of a multi-layer composite refractory material; the fire spraying pipe sets are symmetrically distributed on the left side and the right side of the furnace body, the tail ends of the fire spraying pipes are provided with multi-stage swirl nozzles, and the adjustable range of the angles of the nozzles is + / -15 degrees. A movable partition plate is arranged in the furnace body and divides the furnace body into at least two independent testing areas, and each area is provided with an independent temperature detector, an independent pressure detector and an independent fire spraying pipe set. The water cooler is communicated with the exhaust port through a double-layer spiral cooling pipe, a phase change material is arranged in the double-layer spiral cooling pipe, and an outlet of the water cooler is connected with the flue gas purification module; the device can test different materials or working conditions in different areas, is energy-saving and environment-friendly, and can accurately simulate a complex thermal stress environment.

The invention relates to a solid fuel combustion characteristic test technology, and aims to provide a focusing single particle suspension variable atmosphere ignition combustion experiment device and method. A second microporous plate and a feed hopper are arranged at the top of a combustion chamber main body of the device, and a first microporous plate and a gas buffer cavity are arranged at the bottom; the two laser emitters are arranged in an included angle shape, and the energy of a single laser beam is lower than a fuel particle ignition threshold value; the two paths of laser intersect in the central area of the cavity to form a space energy focus, and the superposed energy of the two beams of laser can be absorbed at the position to reach an ignition threshold value; and light paths of diagnosis equipment in the optical acquisition module are intersected in a focus area. According to the invention, through a strategy of airflow disturbance and microwell plate blocking, particles completely move in airflow; the ignition behavior has spatial selectivity, the success rate is high and controllable, and the research is closer to the actual application scene. Through the design of single-particle fixed-point triggering, the system complexity and the control difficulty can be reduced, and the operation stability and the experiment repeatability can be improved.

A method for evaluating the combustion performance of fuel in sintered quasi-particles is disclosed, relating to the field of iron and steel metallurgy. This method involves sampling and sieving the fuel of the type to be evaluated, preparing different types of quasi-particles based on particle size, and conducting quasi-particle combustion experiments. The experimental data are weighted and averaged based on the fuel particle size distribution to obtain efficiency values ​​for different combustion performances of the fuel. The fuel combustion performance is then evaluated based on these efficiency values. Since different particle sizes of fuel will form different types of quasi-particles during the secondary mixing process, different types of quasi-particles are designed according to the fuel particle size during preparation. Various indicators of the fuel within the quasi-particles are analyzed, which can simultaneously simulate the actual combustion environment of sintered quasi-particles and differentiate the combustion performance of different types of fuel. This is of great significance for reducing sintering costs and minimizing the combustion of sintered solids.

The invention relates to the field of coating materials, in particular to a coating material, a coating base material, application of the coating material, a preparation method of the coating base material and a hydrocarbon source rock thermal simulation method. According to the total mass of the coating material, the coating material comprises the following components of 0.1 wt%-5 wt% of manganese, 3 wt%-4 wt% of niobium and tantalum, 1 wt%-3 wt% of copper, 0.02 wt%-1.8 wt% of carbon, 0.01 wt%-3 wt% of silicon, 83.19 wt%-95.86 wt% of chromium and gold and not larger than 0.01 wt% of iron and / or titanium. The coating material disclosed by the invention has excellent high temperature resistance, high pressure resistance and corrosion resistance.

This invention provides a high-performance fabric flame retardancy testing device, relating to the field of fabric flame retardancy testing technology. The device includes a testing chamber with an igniter installed on its inner wall. The igniter has several ignition heads on its surface, and a gas pipe is connected to one side of the igniter. Fixed frames are installed at the four corners of the testing chamber, with connecting rods slidably inserted into the surfaces of the fixed frames and protective covers fixedly connected to the surfaces of the connecting rods. A stabilizing device is installed on the surface of the testing chamber, which uses clamps and pressure plates to limit and fix the fabric strip being tested. This invention allows for simultaneous testing of different fabrics during high-performance fabric flame retardancy testing, ensuring the fabric remains taut and straight, making the testing process and results more rigorous and reliable, and improving the convenience of the testing work and the reliability of the results data.