CN113820443A - Flame spread characteristic measuring device and measuring method - Google Patents
Flame spread characteristic measuring device and measuring method Download PDFInfo
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Abstract
The invention provides a flame spread characteristic measuring device and a measuring method, which are used for measuring the flame spread characteristic of solid fuel in the transportation process, wherein the measuring device comprises: the variable-angle carrying platform is used for placing the solid fuel and changing the spatial position of the solid fuel; the smoke collecting hood is provided with a combustion chamber, a combustion observation window and a smoke exhaust pipeline, and the variable-angle carrying platform is arranged in the combustion chamber; a camera located at one side of the combustion observation window for taking a flame image; the temperature detection system is used for detecting temperature data of the solid fuel during combustion; and the smoke detection system is used for detecting smoke components and density generated by combustion. The spatial movement of the solid fuel in the transportation process is simulated through the variable-angle carrying platform, the data such as the fire spreading rate, the smoke toxicity, the heat release rate, the combustion efficiency and the like of the solid fuel can be quantitatively obtained by combining the smoke data, the temperature data and the flame image, the measurement accuracy is high, and corresponding reference and guidance are provided for relevant theoretical simulation and practical application.
Description
Technical Field
The invention relates to the technical field of flame spread measurement, in particular to a flame spread characteristic measuring device and a flame spread characteristic measuring method.
Background
With the acceleration of the global integration process, the trade among countries is increasingly close, and the security in the process of goods transportation is increasingly emphasized. Common modes of cargo transportation include land, sea, and air. Road jolting in the process of land transportation, wind and wave in the process of sea transportation and disturbed airflow in the process of air transportation can cause three-dimensional dynamic shaking of goods in the process of transportation. If the solid fuel in transportation burns and spreads fire, the external three-dimensional shaking environment of the material becomes one of the external factors influencing the spread of the material fire.
The existing method and device for measuring the fire spread of the material only consider the influence of oxygen concentration, temperature and humidity, external radiation and the like on the fire spread characteristic in a static state, and do not consider the fire spread characteristic of the material in a non-static state. The fire spreading mechanism of the material under three-dimensional dynamic conditions such as transportation, processing, treatment and the like cannot be explained.
Disclosure of Invention
The invention aims to provide a flame spread characteristic measuring device which can simulate the movement of solid fuel in the space movement process, observe the flame spread rate, analyze smoke and improve the measurement accuracy of the flame spread characteristic in the movement process.
Another object of the present invention is to provide a flame spread characteristic measuring method which is simple to operate and is implemented by the flame spread characteristic measuring apparatus.
In order to achieve the above purpose, the invention provides the following technical scheme:
in a first aspect, the present invention provides a flame spread characteristic measuring apparatus for measuring a flame spread characteristic of a solid fuel during movement, comprising: the variable-angle carrying platform is used for placing the solid fuel and controllably adjusting the spatial position of the solid fuel; the smoke collecting hood is provided with a combustion chamber, the variable-angle carrying platform is arranged in the combustion chamber, the top end of the combustion chamber is communicated with a smoke exhaust pipeline, and a combustion observation window is arranged on one side of the combustion chamber; the flame detection system comprises a camera positioned on one side of the combustion observation window, wherein the camera is used for shooting a flame image of the solid fuel during combustion through the combustion observation window; the temperature detection system is used for detecting temperature data of the solid fuel during combustion; and the smoke detection system is arranged in the smoke exhaust pipeline and is used for detecting the components and the density of smoke generated by the combustion of the solid fuel.
In one embodiment, the variable angle stage comprises a base, a material support plate for holding the solid fuel, and an adjusting mechanism connected between the material support plate and the material support plate for adjusting the spatial position of the material support plate.
In one embodiment, the temperature detection system comprises a plurality of thermocouples and a thermocouple data acquisition module, wherein the material supporting plate is provided with a plurality of thermocouple insertion holes, the thermocouples penetrate through the thermocouple insertion holes in a one-to-one correspondence manner and can acquire the temperature of the solid fuel at corresponding positions, and the thermocouple data acquisition module is electrically connected with the thermocouples.
In one embodiment, the adjustment mechanism includes a first drive module coupled to the base and a second drive module coupled between the first drive module and the material support plate.
In one embodiment, the first driving module comprises a z-axis motor and a z-axis rotating shaft connected to an output shaft of the z-axis motor, or the first driving module comprises an x-axis motor and an x-axis rotating shaft connected to an output shaft of the x-axis motor, and the x-axis rotating shaft or the z-axis rotating shaft is mounted on the base; the second driving module comprises a y-axis motor and a y-axis rotating shaft connected to an output shaft of the y-axis motor, the y-axis motor is connected to the x-axis rotating shaft or the z-axis rotating shaft, and the y-axis rotating shaft is connected to the material supporting plate.
In one embodiment, the smoke detection system comprises a smoke density laser detection module and a gas component analysis module, wherein the smoke density laser detection module is used for detecting the density of smoke in a smoke exhaust pipeline, and the gas component analysis module is used for analyzing gas components and the concentration of the gas components in the smoke.
In one embodiment, an exhaust fan is arranged at the joint of the smoke exhaust pipeline and the combustion chamber.
As a second aspect, the present invention provides a method for measuring a flame propagation characteristic, implemented by the above apparatus for measuring a flame propagation characteristic, comprising the steps of:
calibrating a flue gas detection system by adopting a standard flame;
fixing the solid fuel on a variable-angle carrying platform, and adjusting the initial angle, the swing range, the frequency and the speed parameters of the variable-angle carrying platform;
burning the solid fuel along a specified edge or a specified corner, acquiring a burning image of the solid fuel through a burning observation window, acquiring temperature distribution data of different parts of the solid fuel through a temperature detection system, and acquiring components, concentration and smoke density data of smoke in smoke generated by burning through a smoke detection system;
and deducing flame spread data of the solid fuel by combining the temperature distribution data, the combustion image and a pre-established flame spread model, and judging the heat release rate, the toxic gas danger and the combustion efficiency of the solid fuel in the fire spread process under a three-dimensional dynamic scene by combining the smoke component, the concentration and the smoke density data, so that the flame spread characteristic measurement and the fire hazard measurement are realized.
When the variable-angle carrying platform comprises a base, a material supporting plate and an adjusting mechanism, the adjusting mechanism receives a control signal to change the swing rule of each plane of the material supporting plate, and the fire spreading characteristics and the fire danger of the solid fuel under other three-dimensional dynamic scenes are measured.
In one embodiment, a plurality of thermocouples are uniformly inserted on the material supporting plate, the thermocouples are inserted at the bottom end of the solid fuel, and the temperature distribution information of the solid fuel in the flame spread process is obtained through the thermocouples.
The technical scheme provided by the invention has the beneficial effects that: according to the flame spread characteristic measuring device and the flame spread characteristic measuring method, a closed transportation space of the solid fuel is constructed through the smoke collecting hood, the space motion of the solid fuel in the transportation process is simulated through the variable-angle carrier, the data or images obtained by the smoke density laser detection system, the combustion gas analysis system, the thermocouple data acquisition system and the high-definition camera can be quantitatively obtained to obtain the data such as the fire spread rate, the smoke toxicity, the heat release rate, the combustion efficiency and the like of the solid fuel in different three-dimensional dynamic scenes, the measuring accuracy is high, and corresponding reference and guidance are provided for relevant theoretical simulation and practical application.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below.
FIG. 1 is a schematic structural view of a flame spread characteristic measuring apparatus according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a variable-angle stage according to an embodiment of the present invention;
FIG. 3 is an exploded view of the variable angle stage of FIG. 2;
fig. 4 is a schematic perspective view of a variable-angle stage according to another embodiment of the present invention;
fig. 5 is an exploded view of the variable angle stage shown in fig. 4.
Detailed Description
Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and the embodiments of the present invention are illustrative only and are not intended to limit the scope of the present invention.
It should be understood that the various steps recited in the method embodiments of the present invention may be performed in a different order and/or performed in parallel. Moreover, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the invention is not limited in this respect.
The term "include" and variations thereof as used herein are open-ended, i.e., "including but not limited to". The term "coupled" may refer to direct coupling or indirect coupling via intermediate members (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions for other terms will be given in the following description.
Referring to fig. 1 to 5, the present invention relates to a flame spread characteristic measuring apparatus (hereinafter referred to as "measuring apparatus") and a flame spread characteristic measuring method (hereinafter referred to as "measuring method") implemented by the same, which are used for measuring the flame spread characteristics of solid fuels during transportation, so as to provide experimental data and analysis result support for fire risk assessment, actual engineering guidance, specification standard establishment, and the like.
The measuring device comprises a variable-angle carrying platform 1, a smoke collecting cover 2, a flame detection system, a temperature detection system and a smoke detection system.
The variable-angle carrier 1 is used for placing and fixing the solid fuel, can controllably change the spatial position of the solid fuel, simulates the spatial motion state of the solid fuel in the transportation process, and is arranged in the smoke collecting hood 2.
The collection petticoat pipe 2 has combustion chamber and the exhaust pipe 3 that is linked together with the combustion chamber to can be with leading-in exhaust pipe 3 of the produced flue gas of the interior solid combustion of combustion chamber, one side of combustion chamber still is equipped with burning observation window 9, with the burning condition of obtaining solid state combustion from collection petticoat pipe 2 outside. The periphery of the fume collecting hood 2 is closed, and a closed space of the solid fuel in the transportation process can be simulated.
The flame detection system comprises a high-definition camera 10, wherein the high-definition camera 10 is arranged at the combustion observation window 9 and is used for rapidly shooting a flame image during combustion of the solid fuel through the combustion observation window 9. The combustion observation window 9 is made of anti-reflection glass, so that the shooting effect of the high-definition camera 10 on the experimental condition is guaranteed. The flame image data acquired by the high-definition camera 10 is stored in a built-in memory card. In the invention, the fire spreading rate in two-dimensional direction is judged by combining the position of the flame in the image shot by the high-definition camera 10 and the swing rule of the solid fuel sample.
The temperature detection system is used for detecting temperature distribution data during solid fuel combustion.
And the smoke detection system is arranged in the smoke exhaust pipeline 3 and is used for detecting the components and the density of smoke generated by the combustion of the solid fuel.
Therefore, a closed space in the solid fuel transportation process can be constructed through the smoke collecting hood 2, the space motion track of the solid fuel in the transportation process can be simulated through the variable-angle carrying platform 1, and the data such as the fire spreading rate, the smoke toxicity, the heat release rate, the combustion efficiency and the like of the solid fuel in different three-dimensional dynamic scenes can be quantitatively obtained by combining the data acquired by each system module of the smoke detection system, the temperature detection system and the high-definition camera 10, so that corresponding reference and guidance are provided for relevant theoretical simulation and practical application.
It should be understood that the measuring device of the present invention further includes a computer 6 and a console 7, the console 7 is connected to the variable angle carrying stage 1 to control the movement law of the variable angle carrying stage 1, specifically to control the swing range, frequency, speed, etc. of the solid fuel, and the computer 6 is used to receive flame image data, smoke measurement data and temperature distribution data, and in combination with the swing law of the solid fuel, to obtain the flame spread characteristics and determine the fire risk.
In one embodiment, the variable angle stage 1 includes a base 12, a material support plate 11 for placing the solid fuel, and an adjustment mechanism connected therebetween for adjusting the spatial position of the material support plate 11. The material supporting plate 11 is made of fireproof and heat-insulating materials, and can play a role in protecting the adjusting mechanism below the flame.
In one embodiment, the adjusting mechanism comprises a first driving module and a second driving module, the first driving module is connected with the base 12, the second driving module is connected between the first driving module and the material supporting plate 11, and the material supporting plate rotates or swings through the first driving module and the second driving module to simulate a turning or bumping situation in the transportation process.
In one embodiment, the first driving module comprises a z-axis motor 13 and a z-axis rotating shaft 14 connected to an output shaft of the z-axis motor 13, wherein the z-axis rotating shaft 14 is mounted on the base 12; the second driving module comprises a y-axis motor 15 and a y-axis rotating shaft 16 connected to an output shaft of the y-axis motor 15, the y-axis motor 15 is connected to the z-axis rotating shaft 14, and the y-axis rotating shaft 16 is connected to the material supporting plate 11. Therefore, the solid test material can rotate in the direction vertical to the z-axis and the y-axis, can rotate for 360 degrees in the direction vertical to the z-axis, and can simulate the turning condition of the material in the transportation process; a 135 rotation can be made perpendicular to the y-axis to simulate the roll and pitch conditions encountered by the material during transport.
Or, referring to fig. 5, in another embodiment, the variable angle stage may be replaced with another variable angle stage 1', wherein the first driving module includes an X-axis motor 18 and an X-axis rotating shaft 19 connected to an output shaft of the X-axis motor 18, and the X-axis rotating shaft 19 is mounted on the base 12; the second driving module comprises a y-axis motor 15 and a y-axis rotating shaft 16 connected to an output shaft of the y-axis motor 15, the y-axis motor 15 is connected to an x-axis rotating shaft 19, and the y-axis rotating shaft 16 is connected to the material supporting plate 11. The solid fuel can rotate in the direction vertical to the y axis and the x axis, optionally can rotate 90 degrees in the direction vertical to the y axis, can simulate the left and right bumping condition of the material in the stable transportation process, can rotate 180 degrees in the direction vertical to the y axis, and can simulate the up and down bumping condition of the material in the stable transportation process.
Therefore, the spatial movement of the solid fuel in the transportation process can be simulated in a controlled manner through the adjusting mechanism, namely the solid fuel is in a turning situation, a left-right bumping situation and an up-down bumping situation, and further the flame spread characteristic measurement of the solid fuel in the spatial movement state can be realized.
In one embodiment, the temperature detection system comprises a plurality of thermocouples 20 and a thermocouple data acquisition module 8, wherein a plurality of thermocouple 20 insertion holes are uniformly formed in the material supporting plate 11, the thermocouples 20 are correspondingly inserted into the thermocouple insertion holes one by one and can acquire the temperature of the solid fuel at corresponding positions, so that the flame position can be judged, and the thermocouple data acquisition module 8 is electrically connected with the thermocouples 20.
In one practical application scenario, according to the hardness of the tested solid fuel, the probe of the thermocouple 20 is inserted into the solid fuel or placed at the bottom of the solid fuel, and the thermocouple 20 is numbered and connected to the thermoelectric even data acquisition module 8. Thus, the temperature distribution of the solid fuel at different locations during the propagation of the flame can be obtained by different thermocouples 20.
In one embodiment, the smoke detection system comprises a smoke density laser detection module 4 and a gas component analysis module 5, wherein the smoke density laser detection module 4 is connected to the smoke exhaust pipeline 3 and used for detecting the density of smoke in the smoke exhaust pipeline 3, and the gas component analysis module 5 is used for analyzing gas components and the concentration thereof in the smoke.
The smoke density laser detection module 4 detects the smoke density change in the solid fuel fire spreading process through the penetration rate change of laser in smoke, and the detected data are directly transmitted to the smoke density data processing and displaying module of the computer 6.
The gas component analysis module 5 can measure the types and corresponding concentrations of gases generated by combustion of materials in the fire spreading process by collecting smoke in the smoke exhaust pipeline 3, and the data are directly transmitted to the smoke processing and displaying module of the computer 6.
In one embodiment, in the smoke collecting hood 2, an exhaust fan is arranged at the joint of the smoke exhaust pipeline 3 and the combustion chamber, so that the flow of smoke can be accelerated, the smoke generated by the combustion of the solid fuel is introduced into the smoke exhaust pipeline 3 in time for measurement, and the measurement accuracy is improved.
As a second aspect, the present invention also relates to a measurement method implemented by the above measurement apparatus, comprising the steps of:
(1) checking whether each part of the measuring device is in a normal state, starting the computer 6, opening the analysis software matched with the device, calibrating the smoke density laser detection module 4 and the gas composition analysis module 5 by using standard fire, adjusting the correlation coefficient in the analysis software after the calibration is finished, and closing the analysis software.
(2) The solid fuel is cut so that the surface area of the solid fuel is smaller than or equal to the surface area of the material support plate 11, and the solid fuel is fixed to the material support plate 11 by an iron clamp or other fixing means. The thermocouple 20 is inserted into the thermocouple insertion hole on the material support plate 11, the probe of the thermocouple 20 is inserted into the solid fuel or placed at the bottom of the solid fuel according to the hardness of the tested solid fuel, and the thermocouple 20 is numbered and connected to the thermoelectric even data acquisition module 8.
(3) The placing angle of the variable-angle carrying platform 1 on the ground is adjusted, so that one side of the material supporting plate 11 is parallel to the lens plane of the high-definition camera 10. The initial angle of the material supporting plate 11 in each plane is set by the console 7, and the swing range, frequency and speed of each plane of the variable angle stage 1 are set.
(4) And opening an exhaust fan at the joint of the exhaust pipeline 3 and the combustion chamber to ensure that the flue gas generated in the experimental process is effectively discharged. The high definition camera 10 is turned on to record the combustion process of the solid fuel and the analysis software of the computer 6 is turned on to record the temperature change of the thermocouple 20, the smoke density change and the type and concentration of the combustion gas. And (3) igniting a certain angle or a certain edge of the solid fuel by using an igniter, so that the flame spreads from a certain appointed edge or a certain appointed angle to other positions, and starting an operation button of the angle changing platform 1 in the control board 7.
(5) And recording video images, temperature changes, smoke density changes and types and concentration changes of gases generated by combustion in real time, finishing the whole acquisition process after the solid fuel is combusted, and closing the camera 10, the exhaust fan, the control software, the analysis software and the console 7. And uniformly outputting the experimental data.
(6) The experimental data is analyzed and the fire spread data for the solid fuel is derived from the thermocouple 20 data, the video data and the fire spread model. And judging the heat release rate, the toxic gas danger, the combustion efficiency and the like of the material in the fire spreading process under the three-dimensional dynamic scene according to the smoke density data, the combustion generated gas type and the concentration change data. The fire hazard of the fuel under a specific three-dimensional dynamic scene can be comprehensively judged according to all experimental data.
(7) And (3) changing the swing rule of each plane of the material supporting plate 11 in the variable-angle carrying platform 1 through the control platform 7, repeating the steps (1) to (6), and judging the fire spreading characteristics and the fire danger of the solid fuel in other three-dimensional dynamic scenes. The experimental data and the analysis result can be used for simulation, fire risk assessment, actual engineering guidance, standard making and the like.
According to the measuring device and the measuring method, the swing range, the frequency and the speed of the three-dimensional dynamic variable-angle carrying platform 1 in each plane are set, so that the steering and the jolting of the solid fuel in the transportation process can be effectively simulated. By combining data or images obtained by the system modules of the smoke density laser detection module 4, the gas component analysis module 5, the thermocouple data acquisition module 8 and the high-definition camera 10, the fire spreading rate, the smoke toxicity, the heat release rate, the combustion efficiency and the like of the solid fuel under different three-dimensional dynamic scenes can be quantitatively obtained, and corresponding reference and guidance are provided for relevant theoretical simulation and practical application.
The above embodiments illustrate the principle of the measurement apparatus and the measurement method according to the present invention by simulating the transportation process of the solid fuel, but it is not meant that the measurement apparatus can only be used for revealing the fire spreading mechanism and the fire risk determination of the transportation dynamic state of the solid fuel, and the measurement apparatus can also reveal the fire spreading mechanism and the fire risk of the solid fuel in the three-dimensional dynamic scenes such as actual production (e.g., processing) and use.
The foregoing description is only exemplary of the preferred embodiments of the invention and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention according to the present invention is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is possible without departing from the scope of the invention as defined by the appended claims. For example, the above features and (but not limited to) features having similar functions of the present invention are mutually replaced to form the technical solution.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims (10)
1. A flame spread characteristic measuring apparatus for measuring a flame spread characteristic of a solid fuel during movement, comprising:
the variable-angle carrying platform is used for placing the solid fuel and controllably adjusting the spatial position of the solid fuel;
the smoke collecting hood is provided with a combustion chamber, the variable-angle carrying platform is arranged in the combustion chamber, the top end of the combustion chamber is communicated with a smoke exhaust pipeline, and a combustion observation window is arranged on one side of the combustion chamber;
the flame detection system comprises a camera positioned on one side of the combustion observation window, wherein the camera is used for shooting a flame image of the solid fuel during combustion through the combustion observation window;
the temperature detection system is used for detecting temperature distribution data when the solid fuel is combusted;
and the smoke detection system is arranged in the smoke exhaust pipeline and is used for detecting the components and the density of smoke generated by the combustion of the solid fuel.
2. The apparatus of claim 1, wherein the stage comprises a base, a material support plate for holding the solid fuel, and an adjustment mechanism coupled between the material support plate and the base for adjusting the spatial position of the material support plate.
3. The apparatus for measuring the propagation property of flame as claimed in claim 2, wherein the temperature detecting system comprises a plurality of thermocouples and a thermal and electrical data collecting module, the material supporting plate is provided with a plurality of thermocouple insertion holes, the thermocouples are correspondingly inserted into the thermocouple insertion holes and can obtain the temperature of the solid fuel at the corresponding positions, and the thermal and electrical data collecting module is electrically connected with the thermocouples.
4. The apparatus of claim 2, wherein the adjustment mechanism comprises a first drive module coupled to the base and a second drive module coupled between the first drive module and the material support plate.
5. The apparatus of claim 4, wherein the first driving module comprises a z-axis motor and a z-axis rotating shaft connected to an output shaft of the z-axis motor, or the first driving module comprises an x-axis motor and an x-axis rotating shaft connected to an output shaft of the x-axis motor, and the x-axis rotating shaft or the z-axis rotating shaft is mounted on the base; the second driving module comprises a y-axis motor and a y-axis rotating shaft connected to an output shaft of the y-axis motor, the y-axis motor is connected to the x-axis rotating shaft or the z-axis rotating shaft, and the y-axis rotating shaft is connected to the material supporting plate.
6. The apparatus of claim 1, wherein the smoke detection system comprises a smoke density laser detection module and a gas composition analysis module, the smoke density laser detection module is used for detecting the density of smoke in the smoke exhaust duct, and the gas composition analysis module is used for analyzing the gas composition and the concentration thereof in the smoke.
7. The apparatus for measuring the propagation characteristics of a flame of claim 1, wherein a suction fan is provided at the connection of the smoke exhaust duct and the combustion chamber.
8. A flame propagation property measuring method, implemented by the flame propagation property measuring apparatus of any one of claims 1 to 7, comprising the steps of:
calibrating a flue gas detection system by adopting a standard flame;
fixing the solid fuel on a variable-angle carrying platform, and adjusting the initial angle, the swing range, the frequency and the speed parameters of the variable-angle carrying platform;
burning the solid fuel along a specified edge or a specified corner, acquiring a burning image of the solid fuel through a burning observation window, acquiring temperature distribution data of different parts of the solid fuel through a temperature detection system, and acquiring components, concentration and smoke density data of smoke in smoke generated by burning through a smoke detection system;
and deducing flame spread data of the solid fuel by combining the temperature distribution data, the combustion image and a pre-established fire spread model, and judging the heat release rate, the toxic gas danger and the combustion efficiency of the solid fuel in the fire spread process under a three-dimensional dynamic scene by combining the smoke component, the concentration and the smoke density data.
9. The method of claim 8, wherein when the variable angle stage comprises a base, a material support plate and an adjusting mechanism, the adjusting mechanism receives a control signal to change the swing law of each plane of the material support plate, and measures the fire spreading characteristics and the fire risk of the solid fuel in other three-dimensional dynamic scenes.
10. The method of claim 9, wherein a plurality of thermocouples are uniformly inserted into the material supporting plate, and the thermocouples are inserted into the bottom end of the solid fuel, and the temperature distribution information of the solid fuel during the propagation of the flame is obtained by the thermocouples.
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Cited By (3)
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| CN114414625A (en) * | 2022-01-25 | 2022-04-29 | 东北大学 | Testing device and method for evaluating influence of moisture content on dust bed fire |
| CN116026981A (en) * | 2023-03-27 | 2023-04-28 | 中国科学技术大学 | Device and method for detecting efficacy of solid fire extinguishing agent |
| CN116363825A (en) * | 2023-06-02 | 2023-06-30 | 北京利达华信电子股份有限公司 | Method and device for displaying fire spreading trend, electronic equipment and medium |
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