CN210863654U - A burning and fire extinguishing process integrated analysis device for cup type combustor - Google Patents
A burning and fire extinguishing process integrated analysis device for cup type combustor Download PDFInfo
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- CN210863654U CN210863654U CN201921314974.1U CN201921314974U CN210863654U CN 210863654 U CN210863654 U CN 210863654U CN 201921314974 U CN201921314974 U CN 201921314974U CN 210863654 U CN210863654 U CN 210863654U
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Abstract
The utility model discloses a burning and fire extinguishing process integrated analysis device for cup type combustor, the device includes parts such as cup type combustor main part, infrared gas analysis appearance, gas collecting channel, flue gas analysis appearance, exhaust pipe, high pressure gas storage steel bottle, the gas collecting bottle, the fan, quartz glass cover, the thermocouple, data acquisition module, a computer, high-speed camera, can realize the qualitative and quantitative analysis to the combustion products of fuel and fire extinguishing agent and flame action result in the cup type combustor experimentation, research combustible substance burning and the mechanism of putting out a fire, and can effectively keep apart the poisonous and harmful substance that the experiment produced, structure safe and reliable, the measuring result is accurate, and is environment-friendly.
Description
Technical Field
The utility model relates to a conflagration science technical field, concretely relates to burning and fire extinguishing process integrated analysis device for cup burner.
Background
In 1977 R.Hirst and K.Booth (Hirst R, Booth K.Measurement of flame-extinguishing concentrations [ J ]. Fire Technology,1977,13(4): 296. 315.) systems introduced the use of cup burners as a laboratory-scale, stable diffusion flame-producing device for studying fuel diffusion combustion and for evaluating the effectiveness of Gaseous extinguishing agents, which methods written NFPA 2001(Standard on Clean air Fire extinguishing systems), ISO 14520-Part1(gas flame-extinguishing systems-physical properties and systems) and GB/T20702-extinguishing (Fire extinguishing gas performance test methods) related standards, improved Fire extinguishing principles such as other high boiling point, fine bubble-type Fire extinguishing agents, and other high boiling point flame-extinguishing Agent evaluation devices, Dry powder extinguishants and other different types of extinguishing media (e.g., a cup burner for foam extinguishant experiments disclosed in chinese patent CN103454387A, a cup burner for testing the extinguishing performance of a vaporous extinguishing agent disclosed in chinese patent CN 103901156A; paper Tianshui Liang, Runwan Li, king Li, yanyanyan Xu, Wei Zhong, Jun Zhao, sizing lo.extingating of hydro carbon pore fish fin water mill with ammonium/amidogen compound in an improved Fire house [ J ]. Fire Materials,2018,42(8), and deutsche-hai goose.) ultra-fine dry powder extinguishant research [ D ]. south university of Fire extinguishing technology, Fire extinguishing, etc.) based on cup burners have also been widely used.
Existing cup burner devices are typically used to test the critical fire suppression concentration of the fire suppressant, and there has been little research on the analysis of the products of fuel combustion and the products of fire suppressant and flame action based on such devices, whereas existing analysis of fire suppression products has generally been studied through large-scale physical fire experiments. In the process of researching the mechanism of the fire extinguishing agent, the factors and the relation among the factors such as the critical fire extinguishing concentration of the fire extinguishing agent, the fire extinguishing process time, the dosage of the fire extinguishing agent, the temperature of a fire scene, the structure and the form of flame, the fuel property, the heat release rate, the generation amount of the fire extinguishing agent and the flame action product play an important role in evaluating the comprehensive performance of the fire extinguishing agent such as the fire extinguishing efficiency of the fire extinguishing agent, the harmfulness to the environment and the health and the like. The cup type combustor is used as a laboratory scale model, compared with a large-scale solid fire experiment, the experimental conditions are easier to control, the obtained experimental data are more accurate, and the combustion characteristic parameters and combustion products in the process can be analyzed on the basis of measuring the fire extinguishing concentration, so that the accuracy of the concentration test of the fire extinguishing agent can be improved, and the combustion and fire extinguishing mechanism can be deeply researched. The traditional cup type burner is a relatively open system, and the environment (such as airflow disturbance) around the experimental device can influence the fuel combustion and the fire extinguishing process, so that the measurement error is caused. In the calculation of the fire extinguishing concentration, the extinguishing time of flame needs to be determined to calculate the using amount of the fire extinguishing agent, the characteristic parameters of fuel combustion can be mutated in the fire extinguishing process, and the existing method generally determines the extinguishing time by artificially observing the change of flame form, so that the accuracy is low, and the result of the fire extinguishing concentration test is inaccurate. Meanwhile, in the research on the critical fire extinguishing concentration of the fire extinguishing agent containing halogen elements, it is found that a large amount of highly toxic products such as hydrogen halide gas (such as hydrogen fluoride, hydrogen chloride, hydrogen bromide and the like), acyl halide gas compounds (such as carbonyl chloride, carbonyl fluoride and the like) and the like are generated in the process of the action of the fire extinguishing agent and flame. During the experiment of the traditional cup type burner, the highly toxic gas can be released into the surrounding environment, and serious irreversible damage can be caused to the health of experimenters, laboratory equipment and the surrounding environment. The accurate measurement of the generation amount of the extremely toxic corrosive products also has important significance for the research on the applicable conditions and the improved method of the fire extinguishing agent.
The different types of improved cup burners involved in chinese patents CN103454387A, CN103901156A, CN106823227A, CN104749331A and CN208155957U are not able to effectively solve the above problems. The amount of hydrogen fluoride generated during the experimental fire extinguishing process of the cup-type burner is studied in the literature (Chentao, Xue gang, Rong Ji, et al. research on the amount of hydrogen fluoride generated during the action of a clean gas fire extinguishing agent and flame [ J ]. report on safety and environmental science, 2011,11(3) ], the experiment can only analyze the amount of the corrosive gas hydrogen fluoride generated in the fire extinguishing process of the cup type burner, can not research other parameters to obtain the comprehensive action mechanism of the action of the fire extinguishing agent and the flame, does not isolate the external environment from the device, and although the spectroscopy method can carry out online concentration detection on the generation amount of hydrofluoric acid, but the measured value is the point average concentration of the corresponding section, the result is influenced by a plurality of factors such as temperature, gas distribution and the like, the qualitative research result of the hydrofluoric acid generation concentration trend can be obtained, and further verification is needed for quantitative research on the total hydrofluoric acid generation amount and the like.
The limitations of the existing device can not meet the requirements of carrying out accurate comprehensive analysis on combustion products obtained by a cup-type combustor experiment, can not carry out in-situ measurement on flame and fire extinguishing process characteristic parameters so as to deeply analyze the action mechanism of a fire extinguishing agent and the flame, and can not isolate the device from the surrounding environment, thereby avoiding the diffusion of the combustion products and the influence of the surrounding environment on the experiment.
SUMMERY OF THE UTILITY MODEL
To the defects existing in the prior art, the utility model provides a burning and fire extinguishing process comprehensive analysis device for a cup type burner.
In order to achieve the above object, the utility model adopts the following technical scheme:
a combustion and fire extinguishing process comprehensive analysis device for a cup-type combustor comprises a fuel supply pipeline, an air and fire extinguishing agent supply pipeline, an isolation net, a stainless steel base, glass beads, a combustion cup, a quartz cup cover, an infrared gas detector, a fixed support, a gas collecting cover, a flue gas analyzer, an exhaust pipeline, a three-way valve, a two-way pipe, a ball valve, a pressure gauge, a high-pressure gas storage steel cylinder, a gas collecting bottle, a supporting table, a fan, an exhaust hood, a quartz glass cover, a thermocouple support, a thermocouple connecting wire, a data acquisition device, a transmission line, a computer, a high-speed camera, an inclined strut, a hanger and a platform; the fuel supply pipeline is connected with the combustion cup, the air and fire extinguishing agent supply pipeline is connected with the stainless steel base, an isolation net is arranged at the joint, glass beads are filled in the stainless steel base, the quartz cup cover is placed on the stainless steel base, and the stainless steel base is placed on the platform; the gas collecting hood is positioned at the upper end of the quartz cup hood, two sides of the gas collecting hood are provided with fixed supports, the infrared gas detector is provided with a light source transmitting end and a receiving end, and the two sides of the quartz cup hood positioned at the lower end of the gas collecting hood are connected to the fixed supports; the gas collecting hood is connected with an exhaust pipeline, a fan is arranged on the exhaust pipeline, the flue gas analyzer is arranged on the exhaust pipeline, and a gas collecting end of the flue gas analyzer extends into the pipeline; the gas collecting bottle is sealed, gas is circulated through two pipelines arranged on the gas collecting bottle, the gas can be filled with solution for collecting the gas, and the gas flows through the gas collecting bottle and then enters the exhaust pipe outside the quartz glass cover through the two pipelines and the exhaust pipeline; the quartz glass cover is placed on the platform, and the cup type burner main body, the gas collecting hood above the cup type burner, the exhaust pipeline connected with the gas collecting hood, the high-pressure gas storage steel cylinder, the gas collecting cylinder and the high-speed camera are isolated from the external environment; a support table is arranged in the quartz glass cover, the support table is fixed with the quartz glass cover through an inclined stay bar, and the high-pressure gas storage steel cylinder, the gas collecting cylinder and the high-speed camera are arranged on the support table; the exhaust hood is arranged at the center of the top of the quartz glass hood, and an exhaust pipe outside the quartz glass hood is connected with the exhaust hood; a fan is arranged in an external exhaust pipe connected with the quartz glass cover and is positioned at the front end of an exhaust pipeline connected with the gas collecting bottle; a hanging frame is arranged in the quartz glass cover, and an internal exhaust pipeline is fixed on the hanging frame; the thermocouple support is positioned outside the quartz glass cover, one end of the thermocouple is fixed on the support, the measuring end is positioned in the quartz glass cover of the cup-type burner, the thermocouple is connected with the data acquisition device through a thermocouple connecting wire, the data acquisition device is connected with the infrared gas detector through a transmission line, and the data acquisition device, the flue gas analyzer and the fan are connected with the computer through transmission lines; wherein:
the cup-type combustor main body is composed of the fuel supply pipeline, the air and fire extinguishing agent supply pipeline, the isolation net, the stainless steel base, the glass beads, the combustion cup and the quartz cup cover and is used for providing an experimental platform for fuel combustion and fire extinguishing agent efficiency evaluation;
the infrared gas analyzer is used for detecting the type and the generation amount of gas generated in the cup-type burner experiment;
the gas collecting hood is used for collecting gas in a cup type burner experiment;
the flue gas analyzer is used for analyzing the components and the concentration of flue gas generated in the experimental process;
the gas exhaust pipeline is used for conveying flue gas generated in an experiment, and the hanging rack is used for fixing the gas exhaust pipeline;
the three-way valve is used for controlling the conveying direction of the flue gas;
the two-way pipe is used for connecting pipelines, so that the high-pressure gas storage steel cylinder and the gas collection cylinder can be conveniently separated from the pipelines;
the high-pressure gas storage steel cylinder is used for collecting all gases generated in the experiment; the ball valve and the pressure gauge are arranged on the high-pressure gas storage steel cylinder and are used for controlling the opening and closing of the high-pressure gas storage steel cylinder and monitoring the pressure in the cylinder;
the gas collecting bottle is used for collecting specific gas conveyed by the exhaust pipeline;
the supporting table is used for placing objects, and the inclined stay bar is used for stabilizing the supporting table;
the fan is used for providing power for pumping away gas in the experimental device;
the exhaust hood is used for exhausting smoke in the quartz glass hood, and the smoke which is not collected by the gas collecting hood is exhausted through the exhaust hood;
the quartz glass cover is used for isolating the cup-type burner body and flue gas generated in an experiment from the surrounding environment of the experimental device;
the thermocouple is used for measuring the temperature distribution of the cup type combustor in the experimental process, the thermocouple support is used for fixing the thermocouple, and the thermocouple connecting wire is used for transmitting the measurement data of the thermocouple;
the transmission line is used for transmitting data and signals between devices;
the computer is used for displaying, analyzing and storing data and controlling the rotating speed of the fan;
the high-speed camera is used for shooting the flame shape in the experiment.
Wherein the flue gas analyzer can select different gas sensors according to the experimental requirements, and the measured gas components can be but are not limited to oxygen, carbon monoxide, carbon dioxide, sulfur dioxide, nitrogen oxide and hydrogen sulfide.
The gas collecting bottle can be, but not limited to, water or alkaline liquid, and the specific absorbing solution can be selected according to the property of the actually generated gas.
The fan is provided with a one-way valve and an electromagnetic valve, and only allows the smoke to flow towards one direction, so that the gas in the pipeline is prevented from flowing back into the quartz glass cover.
Wherein the quartz glass cover, the quartz glass cover by the cube that five face quartz glass in upper and front, back, left and right constitute, wherein the quartz glass of a side can be dismantled to experimental apparatus arranges in earlier stage and later stage sample and maintenance.
The existing cup type burner is limited by the technology and equipment, can only measure the critical fire extinguishing concentration of the fire extinguishing agent, and cannot measure parameters such as combustion products, fuel heat release rate, flame structure and form, temperature field change in the fire extinguishing process and the like so as to deeply research the fire extinguishing mechanism; the starting and stopping time of the action of the fire extinguishing agent and the flame is generally determined by artificial observation, and the accuracy is poor; the combustion products can not be isolated from the outside, and the influence of the experimental surrounding environment on the accuracy of experimental results and the influence of the experimental products on surrounding personnel and the environment are solved. Compared with the prior art, the utility model discloses have following beneficial effect:
1. the in-situ and ex-situ accurate measurement of the combustion products of the fuel and the flame of the cup-type burner and the action products of the fire extinguishing agent can be realized, the variation trend and the generation amount of different products in the combustion and fire extinguishing processes of the fuel are obtained, the fire extinguishing action mechanism of the fire extinguishing agent is analyzed from the product perspective, and the toxicity of the fire extinguishing agent in the application process is evaluated.
2. The method can realize in-situ accurate measurement of flame structural form, temperature and fuel heat release rate in the fire extinguishing process, obtain the change condition of flame characteristic parameters in the fire extinguishing process, determine the action of the fire extinguishing agent and the extinguishing time of the flame according to the change condition, and analyze the inhibition action mechanism of the fire extinguishing agent on fuel combustion from the combustion angle.
3. The device and the combustion product can be isolated from the external environment, the influence of the external environment on the experimental process is reduced, and meanwhile, the toxic corrosive gas generated in the experiment is prevented from causing damage and pollution to experimenters and the surrounding environment.
4. The device has high integration degree, simple and convenient operation, safety and environmental friendliness.
Drawings
Fig. 1 is a front view of the structural principle of the combustion and fire extinguishing process comprehensive analysis device for the cup-type burner of the present invention.
Fig. 2 is a schematic plan view of the structure of the device of the present invention.
In the figure, 1 is a fuel supply line; 2 is an air and fire extinguishing agent supply pipeline; 3 is an isolation net; 4 is a stainless steel base; 5 is glass beads; 6 is a combustion cup; 7 is a quartz cup cover; 8 is an infrared gas detector; 9 is a fixed bracket; 10 is a gas-collecting hood; 11 is a flue gas analyzer; 12 is an exhaust pipeline; 13 is a three-way valve; 14 is a two-way pipe; 15 is a ball valve; 16 is a pressure gauge; 17 is a high-pressure gas storage steel cylinder; 18 is a gas collecting bottle; 19 is a support table; 20a is a first fan; 20b is a second fan; 21 is an exhaust hood; 22 is a quartz glass cover; 22a is rear quartz glass; 22b is right quartz glass; 22c is front quartz glass; 22d is left quartz glass; 22e is upper quartz glass; 23 is a thermocouple support; 24 is a thermocouple; 25 is a thermocouple connecting wire; 26 is a data acquisition device; 27 is a transmission line; 28 is a computer; 29 is a high-speed camera; 30 is a diagonal brace; 31 is a hanging rack; and 32 is a platform.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the embodiments.
As shown in fig. 1 and fig. 2, the utility model discloses a burning and fire extinguishing process integrated analysis device for cup type combustor, including fuel supply line 1, air and fire extinguishing agent supply line 2, separation net 3, stainless steel base 4, glass pearl 5, burning cup 6, quartz cup cover 7, infrared gas detection instrument 8, fixed bolster 9, gas collecting channel 10, flue gas analyzer 11, exhaust pipe 12, three-way valve 13, two-way pipe 14, ball valve 15, manometer 16, high pressure gas storage steel bottle 17, gas collecting bottle 18, brace table 19, first fan 20a, first fan 20b, exhaust hood 21, quartz glass cover 22, thermocouple support 23, thermocouple 24, thermocouple connecting wire 25, data acquisition device 26, transmission line 27, computer 28, high speed camera 29, diagonal brace 30, stores pylon 31 and platform 32. The above parts form a set of device through mechanical connection, welding, glue connection, pre-embedding and other modes.
The fuel supply pipeline 1 is connected with a combustion cup 6, the air and fire extinguishing agent supply pipeline 2 is connected with a stainless steel base 4, an isolation net 3 is arranged at the connection position, glass beads 5 are filled in the stainless steel base 4, the diameter of the glass beads 5 is larger than the aperture of the isolation net 3, a quartz cup cover 7 is placed on the stainless steel base 4, and the stainless steel base 4 is placed on a platform 32; the gas collecting hood 10 is positioned at the upper end of the quartz cup hood 7, the two sides of the gas collecting hood 10 are provided with fixed supports 9, the infrared gas detector 8 is provided with a light source emitting end and a receiving end, and the two sides of the quartz cup hood 7 positioned at the lower end of the gas collecting hood 10 are connected on the fixed supports 9; the gas collecting hood 10 is connected with an exhaust pipeline 12, a flue gas analyzer 11 is arranged on the exhaust pipeline 12, and a gas collecting end of the flue gas analyzer 11 extends into the pipeline; the exhaust pipeline 12 is connected with a high-pressure gas storage steel cylinder 17 and a gas collection cylinder 18 through a three-way valve 13 and a two-way pipe 14, the high-pressure gas storage steel cylinder 17 is provided with a pressure gauge 16 and a ball valve 15, the gas collection cylinder 18 is sealed, gas is circulated through the two pipelines arranged on the gas collection cylinder 18, the gas collection cylinder 18 can be filled with a solution for collecting the gas, and the gas flows through the gas collection cylinder 18 and then enters an exhaust pipe outside the quartz glass cover 22 through the two-way pipe 14, the exhaust pipeline 12 and a first fan 20 a; the quartz glass hood 22 is placed on the platform 32, and isolates the cup type burner main body, the gas collecting hood 10 above the cup type burner, the exhaust pipeline 12 connected with the gas collecting hood 10, the high-pressure gas storage steel cylinder 17, the gas collecting cylinder 18 and the high-speed camera 29 from the external environment; a support platform 19 is arranged in the quartz glass cover 22, the support platform 19 is fixed with the quartz glass cover 22 through an inclined strut 30, and the high-pressure gas storage steel cylinder 17, the gas collecting cylinder 18 and the high-speed camera 29 are arranged on the support platform 19; an exhaust hood 21 is arranged at the center of the top of the quartz glass hood 22, and an exhaust pipe outside the quartz glass hood 22 is connected with the exhaust hood; the external exhaust pipe connected with the quartz glass cover 22 is internally provided with a second fan 20b which is positioned at the front end of the pipeline connected with the gas collecting bottle 18; a hanging rack 31 is arranged in the quartz glass cover 22, and the internal exhaust pipeline 12 is fixed on the hanging rack 31; the thermocouple support 23 is positioned outside the quartz glass cover 22 and placed on the platform 32, one end of the thermocouple 24 is fixed on the support 23, the measuring end is positioned in the cup type burner quartz glass cover 7, the thermocouple 24 is connected with the data acquisition device 26 through the thermocouple connecting wire 25, the data acquisition device 26 is simultaneously connected with the infrared gas detector 8, and the data acquisition device 26 and the flue gas analyzer 11 are connected with the computer 28;
in the embodiment, the fuel supply pipeline 1, the air and fire extinguishing agent supply pipeline 2, the isolation net 3, the combustion cup 6, the fixing support 9, the gas collecting hood 10, the exhaust pipeline 12, the two-way pipe 14, the high-pressure gas storage steel cylinder 17, the exhaust hood 21, the thermocouple support 23, the diagonal brace 30 and the hanging rack 31 are all made of high-temperature resistant stainless steel materials, and the gas collecting cylinder 18 and the supporting platform 19 are made of high-temperature resistant quartz glass materials;
in this embodiment, the parts of the high temperature resistant stainless steel, the high temperature resistant quartz glass, the three-way valve 13 through which the gas passes in the experiment, the ball valve 15, the high pressure gas storage steel cylinder 17, the first fan 20a, the second fan 20b and the like are all subjected to corrosion resistance treatment;
in the embodiment, the diameter of the glass bead 5 is 5mm, and the aperture of the isolation net is 0.5 mm;
in this embodiment, the infrared gas detector 8 is specifically a spectrum analyzer based on tunable semiconductor laser absorption spectroscopy (TDLAS); the flue gas analyzer 11 is a testo 350 type flue gas analyzer and can measure gases such as oxygen, carbon monoxide, carbon dioxide, nitric oxide, nitrogen dioxide, sulfur dioxide, hydrogen sulfide and the like; the volume of the high-pressure gas storage steel cylinder 17 is 5L, and the high-pressure gas storage steel cylinder can resist the pressure of 80 Mpa; the liquid in the gas collecting bottle 18 is sodium hydroxide solution; the first fan 20 and the second fan 20b adopt centrifugal fans with air volume adjustable and provided with check valves and electromagnetic valves; the frame rate of the high-speed camera 29 is 5000FPS, and the pixels are 1280 × 1000;
in this embodiment, the joints of the exhaust hood 21, the exhaust pipeline 12, the platform 32 and the quartz glass hood 22 are fixed and sealed by glass cement; the thermocouple 24 and the transmission line 27 of the instrument which penetrate through the quartz glass cover 22 are bonded with the quartz glass by using glass cement at the contact part of the quartz glass cover 22 so as to maintain the sealing of the quartz glass cover;
in this embodiment, the support platform 19 made of quartz glass material is melted with the quartz glass cover 22 into a whole through thermal processing, and the diagonal brace 30 for stabilizing the support platform 19 is pre-embedded into the support platform 19 and the quartz glass cover 22 through thermal processing; the hanging frame 31 is pre-embedded into the quartz glass cover 22 through hot processing;
in this embodiment, as shown in fig. 2, the quartz glass cover 22 is a cube formed by five quartz glasses of an upper quartz glass 22e, a front quartz glass 22c, a rear quartz glass 22a, a left quartz glass 22d, and a right quartz glass 22b, wherein the upper quartz glass 22e, the front quartz glass 22c, the left quartz glass 22d, and the right quartz glass 22b are connected into a whole through a heat treatment, and the quartz glass of the rear quartz glass 22a and the quartz glass of the remaining four surfaces are connected and fixed by a sealing glass paste, so as to be convenient for detachment.
In this embodiment, the working modes of the first fan 20 and the second fan 20b are as follows:
when the experiment is started, the first fan 20a above the quartz cup cover 7 is firstly opened, the proper rotating speed is adjusted, the second fan 20b is closed, the gas generated by the cup burner in the experiment process is pumped by the first fan 20a to circulate in the exhaust pipeline 12 in the quartz glass cover 22, and the gas enters the high-pressure gas storage steel cylinder 17 through the smoke analyzer 11 and is controlled by the three-way valve 13 to be collected or is collected by the gas collecting cylinder 18 to be discharged. When the experiment is finished, the supply of the fire extinguishing agent to the air fire extinguishing agent supply pipeline 2 is stopped, the second fan 20b is opened at the same time, the proper rotating speed is adjusted, a small amount of gas which possibly enters the quartz glass cover 22 in the experiment process is discharged, the first fan 20a and the second fan 20b are closed, and the supply of air to the air and fire extinguishing agent supply pipeline 2 is stopped at the same time;
the in-situ online measurement of the fuel combustion products and the flame and fire extinguishing agent reaction products can realize the comprehensive measurement of the generation amount of the common characteristic combustion process products and the fire extinguishing process products along with the time change trend through the infrared gas detector 8 and the smoke gas analyzer 11; for the product in the fire extinguishing process, because the generated amount is large, the components are complex and extremely toxic, and the traditional non-optical gas detection device has the defects of small measuring range, low specificity, large error and the like when used for detecting the mixed gas, the infrared gas detector 8 based on the tunable semiconductor laser absorption spectroscopy (TDLAS) in the embodiment can effectively solve the problems and accurately measure the concentration of key gas such as hydrogen halide and acyl halide gas compounds in the fire extinguishing process;
the utility model discloses the non-normal position of well fuel combustion product and flame and fire extinguishing agent effect result is measured, accessible three-way valve 13, gas cylinder 18, high pressure gas storage steel bottle 17 realize. The three-way valve 13 controls the flow direction of the gas in the exhaust pipeline 12, when the exhaust pipeline 12 is connected with the high-pressure gas storage steel cylinder 17, the trapping of all the gas generated before and after fuel combustion and fire extinguishing is realized, the pressure gauge 16 can monitor the pressure in the cylinder in real time, and the amount of the gas trapped in the cylinder can be further calculated. When the experiment is finished, the ball valve 15 is closed, the high-pressure gas storage steel cylinder 17 is taken down from the two-way pipe 14, and the collected gas can be subjected to further spectral energy spectrum analysis to determine accurate substance components; when the gas in the exhaust pipeline 12 flows into the gas collecting bottle 18 filled with specific absorption solution, specific gas components in the experimental process can be trapped, for example, the generation amount of hydrogen halide gas in the process of acting fire extinguishing agent and flame is an important index for evaluating the efficiency of the fire extinguishing agent, the infrared gas detector 8 for in-situ measurement can obtain the variation trend of the average concentration and time of the product, and cannot obtain the specific generated total amount, the specific quantity value of related products can be obtained by measuring the concentration of specific ions trapped in the gas collecting bottle 18, and the results in the infrared gas detector 8 can be mutually verified; meanwhile, most of toxic and harmful gases in combustion and fire extinguishing products of the cup-type combustor are acidic, when the solution is alkaline liquid, such as the sodium hydroxide solution in the embodiment, the pollution products can be effectively absorbed, primary purification of discharged gas is realized in the device, and the environment is friendly;
the utility model discloses in the fire extinguishing process to the flame structural morphology, temperature, the heat release rate precision measurement of fuel, can realize through thermocouple 24, high-speed camera 29, flue gas analyzer 11. In this embodiment, as shown in fig. 1 and 2, there are 6 thermocouples on the thermocouple support 23, the bottommost one thermocouple measures the temperature of the mixture of air and the fire extinguishing agent entering the quartz cup cover 7, and the measuring ends of the remaining thermocouples are located on the central axis directly above the combustion cup 6 and 5cm above the combustion cup 6, and one thermocouple is arranged every 10cm for measuring the change of the flame temperature field above the fuel. The high speed camera 29 is turned on at the beginning of the experiment, and the structural shape of the flame can be recorded during the whole experiment process. The heat release rate of the fuel can be calculated according to the formula of the oxygen consumption method through the change of the oxygen content in the experimental process measured by the flue gas analyzer 11. When the fire extinguishing agent acts on the flame, the structural form, the temperature and the heat release rate of the fuel of the flame can be obviously changed, and the start-stop time of the action of the fire extinguishing agent and the flame can be accurately obtained by combining the in-situ measurement result of the combustion product.
It is above only the utility model discloses preferred embodiment, the utility model discloses the protection scope does not confine above-mentioned embodiment to, the fan belongs to the utility model discloses technical scheme under the thinking all belongs to the utility model discloses a protection scope.
Claims (6)
1. A burning and fire extinguishing process comprehensive analysis device for a cup type burner is characterized in that: the device comprises a fuel supply pipeline, an air and fire extinguishing agent supply pipeline, an isolation net, a stainless steel base, glass beads, a combustion cup, a quartz cup cover, an infrared gas detector, a fixed support, a gas collecting hood, a flue gas analyzer, a gas exhaust pipeline, a three-way valve, a two-way pipe, a ball valve, a pressure gauge, a high-pressure gas storage steel cylinder, a gas collecting bottle, a support table, a fan, an exhaust hood, a quartz glass cover, a thermocouple support, a thermocouple connecting wire, a data acquisition device, a transmission line, a computer, a high-speed camera, an inclined stay bar, a hanger and a platform; the fuel supply pipeline is connected with the combustion cup, the air and fire extinguishing agent supply pipeline is connected with the stainless steel base, an isolation net is arranged at the joint, glass beads are filled in the stainless steel base, the quartz cup cover is placed on the stainless steel base, and the stainless steel base is placed on the platform; the gas collecting hood is positioned at the upper end of the quartz cup hood, two sides of the gas collecting hood are provided with fixed supports, the infrared gas detector is provided with a light source transmitting end and a receiving end, and the two sides of the quartz cup hood positioned at the lower end of the gas collecting hood are connected to the fixed supports; the gas collecting hood is connected with an exhaust pipeline, a fan is arranged on the exhaust pipeline, the flue gas analyzer is arranged on the exhaust pipeline, and a gas collecting end of the flue gas analyzer extends into the pipeline; the gas collecting bottle is sealed, gas is circulated through two pipelines arranged on the gas collecting bottle, the gas can be filled with solution for collecting the gas, and the gas flows through the gas collecting bottle and then enters the exhaust pipe outside the quartz glass cover through the two pipelines and the exhaust pipeline; the quartz glass cover is placed on the platform, and the cup type burner main body, the gas collecting hood above the cup type burner, the exhaust pipeline connected with the gas collecting hood, the high-pressure gas storage steel cylinder, the gas collecting cylinder and the high-speed camera are isolated from the external environment; a support table is arranged in the quartz glass cover, the support table is fixed with the quartz glass cover through an inclined stay bar, and the high-pressure gas storage steel cylinder, the gas collecting cylinder and the high-speed camera are arranged on the support table; the exhaust hood is arranged at the center of the top of the quartz glass hood, and an exhaust pipe outside the quartz glass hood is connected with the exhaust hood; a fan is arranged in an external exhaust pipe connected with the quartz glass cover and is positioned at the front end of an exhaust pipeline connected with the gas collecting bottle; a hanging frame is arranged in the quartz glass cover, and an internal exhaust pipeline is fixed on the hanging frame; the thermocouple support is positioned outside the quartz glass cover, one end of the thermocouple is fixed on the support, the measuring end is positioned in the quartz glass cover of the cup-type burner, the thermocouple is connected with the data acquisition device through a thermocouple connecting wire, the data acquisition device is connected with the infrared gas detector through a transmission line, and the data acquisition device, the flue gas analyzer and the fan are connected with the computer through transmission lines; wherein:
the cup-type combustor main body is composed of the fuel supply pipeline, the air and fire extinguishing agent supply pipeline, the isolation net, the stainless steel base, the glass beads, the combustion cup and the quartz cup cover and is used for providing an experimental platform for fuel combustion and fire extinguishing agent efficiency evaluation;
the infrared gas detector is used for detecting the type and the generation amount of gas generated in the cup-type burner experiment;
the gas collecting hood is used for collecting gas in a cup type burner experiment;
the flue gas analyzer is used for analyzing the components and the concentration of flue gas generated in the experimental process;
the gas exhaust pipeline is used for conveying flue gas generated in an experiment, and the hanging rack is used for fixing the gas exhaust pipeline;
the three-way valve is used for controlling the conveying direction of the flue gas;
the two-way pipe is used for connecting pipelines, so that the high-pressure gas storage steel cylinder and the gas collection cylinder can be conveniently separated from the pipelines;
the high-pressure gas storage steel cylinder is used for collecting all gases generated in the experiment; the ball valve and the pressure gauge are arranged on the high-pressure gas storage steel cylinder and are used for controlling the opening and closing of the high-pressure gas storage steel cylinder and monitoring the pressure in the cylinder;
the gas collecting bottle is used for collecting specific gas conveyed by the exhaust pipeline;
the supporting table is used for placing objects, and the inclined stay bar is used for stabilizing the supporting table;
the fan is used for providing power for pumping away gas in the experimental device;
the exhaust hood is used for exhausting smoke in the quartz glass hood, and the smoke which is not collected by the gas collecting hood is exhausted through the exhaust hood;
the quartz glass cover is used for isolating the cup-type burner body and flue gas generated in an experiment from the surrounding environment of the experimental device;
the thermocouple is used for measuring the temperature distribution of the cup type combustor in the experimental process, the thermocouple support is used for fixing the thermocouple, and the thermocouple connecting wire is used for transmitting the measurement data of the thermocouple;
the data acquisition device is used for acquiring monitoring data of the experimental equipment;
the transmission line is used for transmitting data and signals between devices;
the computer is used for displaying, analyzing and storing data and controlling the rotating speed of the fan;
the high-speed camera is used for shooting the flame shape in the experiment.
2. The combustion and fire extinguishing process comprehensive analysis device for the cup burner as claimed in claim 1, wherein: the infrared gas detector can detect the type and the content of the hydrogen halide gas and the acyl halide gas compound generated in the action process of the fire extinguishing agent and the flame.
3. The combustion and fire extinguishing process comprehensive analysis device for the cup burner as claimed in claim 1, wherein: the flue gas analyzer can select different gas sensors according to experimental needs, and the measured gas components can be oxygen, carbon monoxide, carbon dioxide, sulfur dioxide, nitrogen oxide and hydrogen sulfide.
4. The combustion and fire extinguishing process comprehensive analysis device for the cup burner as claimed in claim 1, wherein: the solution for trapping gas in the gas collecting bottle can be water or alkaline liquid.
5. The combustion and fire extinguishing process comprehensive analysis device for the cup burner as claimed in claim 1, wherein: the fan is provided with a one-way valve and an electromagnetic valve to prevent gas in the pipeline from flowing back.
6. The combustion and fire extinguishing process comprehensive analysis device for the cup burner as claimed in claim 1, wherein: the quartz glass cover is a cube formed by five quartz glass surfaces, namely, an upper surface, a front surface, a rear surface, a left surface and a right surface, wherein the quartz glass on one side surface can be detached.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921314974.1U CN210863654U (en) | 2019-08-14 | 2019-08-14 | A burning and fire extinguishing process integrated analysis device for cup type combustor |
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| CN201921314974.1U CN210863654U (en) | 2019-08-14 | 2019-08-14 | A burning and fire extinguishing process integrated analysis device for cup type combustor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398565A (en) * | 2019-08-14 | 2019-11-01 | 中国科学技术大学 | A kind of burning for cup burner and fire extinguishing procedure comprehensive analysis device |
| CN114217009A (en) * | 2021-12-24 | 2022-03-22 | 中国科学技术大学 | Device suitable for gaseous, liquid fire extinguishing agent performance aassessment |
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2019
- 2019-08-14 CN CN201921314974.1U patent/CN210863654U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398565A (en) * | 2019-08-14 | 2019-11-01 | 中国科学技术大学 | A kind of burning for cup burner and fire extinguishing procedure comprehensive analysis device |
| CN114217009A (en) * | 2021-12-24 | 2022-03-22 | 中国科学技术大学 | Device suitable for gaseous, liquid fire extinguishing agent performance aassessment |
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