CN113624908A - Material ignition simulation experiment device - Google Patents
Material ignition simulation experiment device Download PDFInfo
- Publication number
- CN113624908A CN113624908A CN202110913349.4A CN202110913349A CN113624908A CN 113624908 A CN113624908 A CN 113624908A CN 202110913349 A CN202110913349 A CN 202110913349A CN 113624908 A CN113624908 A CN 113624908A
- Authority
- CN
- China
- Prior art keywords
- sample
- simulation experiment
- infrared
- camera
- experiment device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004088 simulation Methods 0.000 title claims abstract description 60
- 239000000463 material Substances 0.000 title claims abstract description 47
- 238000010438 heat treatment Methods 0.000 claims abstract description 79
- 238000001816 cooling Methods 0.000 claims abstract description 61
- 230000005855 radiation Effects 0.000 claims description 76
- 238000002485 combustion reaction Methods 0.000 claims description 23
- 238000005259 measurement Methods 0.000 claims description 21
- 230000035939 shock Effects 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000001931 thermography Methods 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 6
- 238000009529 body temperature measurement Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 2
- 230000007480 spreading Effects 0.000 abstract description 10
- 239000000446 fuel Substances 0.000 abstract description 8
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000004907 flux Effects 0.000 description 11
- 238000002474 experimental method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a material ignition simulation experiment device. The material ignition simulation experiment device comprises a sample box for placing a sample; a convective cooling system for applying a convective cooling environment to the sample in the sample cartridge; and a radiant heating system for radiatively heating the sample in the sample cartridge, the convective cooling system and the radiant heating system being independent of each other. This material ignites simulation experiment device both can open the radiant heating system alone, can also open convection cooling system and radiant heating system simultaneously, makes the simulation experiment operating mode of igniting of sample not be in the same place of only simulating radiant heating, is about to combine the simulation of convection cooling environment and the simulation of radiant heating environment to the environment is ignited to the comparatively complicated sample of simulation, is favorable to the sample to ignite the operating mode of simulation experiment and selects, is convenient for deeply reveal the burning characteristic of fire spreading fuel.
Description
Technical Field
The invention relates to the technical field of material ignition simulation experiments, in particular to a material ignition simulation experiment device.
Background
Forest fires are one of the eight natural disasters in the world. Forest fires can generate a large heat flux and are often associated with wind (weather-induced ambient wind and flame-induced entrainment airflow). There are three main forms of heat transfer during fire propagation, convection heating, radiation heating and convection cooling.
The research on the mechanism in heating and igniting the solid combustible material under the condition of applying radiant heat flux and convection cooling of different degrees has important theoretical and practical significance, not only can promote scientific understanding on ignition characteristic parameters, ignition phenomena, critical ignition parameters and ignition rules in fire phenomena, enrich combustion phenomena and combustion theories under different heating mechanisms, but also can use the developed theories in a rich fire spreading physical model, and can be used for fire prediction early warning and dynamic prediction and hazard early warning on fire development characteristics in a future research center.
The existing radiation heating device can only provide a radiation heating environment, cannot simulate a complex sample ignition environment, leads to the limitation of the working condition selection of the sample ignition simulation experiment, causes adverse effect on the sample ignition simulation experiment, and is not beneficial to the deep research on the combustion characteristic of fire spreading fuel.
Therefore, how to provide a material ignition simulation experiment device to facilitate the deep research on the combustion characteristics of the fire spreading fuel is a technical problem that needs to be solved by those skilled in the art at present.
Disclosure of Invention
In view of the above, the present invention provides a material ignition simulation experiment apparatus to further disclose the ignition mechanism of the fire spreading fuel.
In order to achieve the purpose, the invention provides the following technical scheme:
a material ignition simulation experiment device, comprising:
a sample cartridge for holding a sample;
a convective cooling system for applying a convective cooling environment to the sample in the sample cartridge; and
a radiant heating system for radiatively heating the sample in the sample cartridge, the convective cooling system and the radiant heating system being independent of each other.
Preferably, in the above-mentioned material ignition simulation experiment apparatus, the convection cooling system includes a fan, a frequency converter electrically connected with the fan, a rectification structure disposed at an air outlet of the fan, an air duct communicated with the rectification structure, and a water-cooling layer disposed on an inner wall of the air duct, the frequency converter can adjust a rotation speed of the fan to adjust an air speed of the air outlet of the fan, and the sample box is disposed inside the air duct near one side of the water-cooling layer.
Preferably, in the material ignition simulation experiment device, the convection cooling system further includes a wind tunnel support for supporting the wind tunnel and a first shock pad disposed at the bottom of the wind tunnel support.
Preferably, in the above material ignition simulation experiment apparatus, the radiant heating system includes an infrared radiant heater disposed on a side of the air duct away from the water-cooling layer, and an infrared heating control cabinet capable of adjusting a heating intensity of the infrared radiant heater.
Preferably, in the material ignition simulation experiment apparatus, the radiation heating system further includes a water-cooling radiation shielding plate disposed between the sample box and the infrared radiation heater, and the water-cooling radiation shielding plate is of a drawing type or a direct type.
Preferably, in the above material ignition simulation experiment apparatus, the radiant heating system further includes observation windows disposed at both sides of the air duct and a heating fixing band for fixing the infrared radiant heater.
Preferably, in the above material ignition simulation experiment apparatus, the infrared radiation heater includes two radiation application modes, that is, an intermittent radiation application mode and a continuous radiation application mode.
Preferably, in the above material ignition simulation experiment apparatus, the sample box is a stainless steel case, and the side wall and the bottom of the sample box are both provided with a ceramic plate or fireproof cotton.
Preferably, in the material ignition simulation experiment device, the device further comprises an experiment measurement system for acquiring combustion characteristic parameters of the sample, wherein the experiment measurement system comprises a mass loss rate measurement component, an infrared thermal imaging component, a DV camera component, a wind speed measurement component, a thermocouple temperature measurement component, a heat flow measurement component and a data processor;
the mass loss rate measuring assembly comprises an electronic balance and a support frame arranged on the electronic balance, and the sample box is arranged on the support frame;
the infrared thermal imaging assembly comprises a high-speed infrared camera and an infrared camera fixing support, the infrared camera is electrically connected with the data processor, and the infrared camera fixing support can support and adjust the height and the camera angle of the high-speed infrared camera;
the DV camera shooting assembly comprises a camera and a DV fixing support, the camera is electrically connected with the data processor, and the DV fixing support can support and adjust the height and the shooting angle of the camera;
the wind speed measuring assembly includes a hot-wire anemometer and a horizontal displacement bracket, by which a position of the hot-wire anemometer in a horizontal direction can be adjusted, the hot-wire anemometer being electrically connected to the data processor, and the horizontal displacement bracket being horizontally movable;
the thermocouple temperature measuring assembly comprises a thermocouple arranged on the surface or in the sample, and the thermocouple is electrically connected with the data processor;
the heat flow measurement assembly includes a bolometer disposed at a location of the sample cartridge, the bolometer being electrically connected with the data processor.
Preferably, in the above material ignition simulation experiment apparatus, the mass loss rate measuring assembly further includes a second shock pad disposed between the electronic balance and the support frame.
When the material provided by the invention is used for igniting the simulation experiment device, the sample in the sample box is heated in a radiation mode through the radiation heating system, namely an environment capable of simulating radiation heating is provided for the sample, and a convection cooling environment is applied to the sample in the sample box through the convection cooling system. The convection cooling system and the radiation heating system are independent from each other, the radiation heating system can be independently started, namely, the radiation heating environment can be independently simulated, and the convection cooling system and the radiation heating system can be simultaneously started. This simulation experiment device ignites can make the simulation experiment operating mode of igniting of sample not be in charge of only simulating radiant heating, be about to the simulation of convection cooling environment and the simulation of radiant heating environment combine together to the environment is ignited to the comparatively complicated sample of simulation, is favorable to the sample to ignite the operating mode selection of simulation experiment, is convenient for carry out the deep study to the burning characteristic of fire spreading material.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a material ignition simulation experiment apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic side cross-sectional view of an air duct according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a fan according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an experimental measurement system according to an embodiment of the present invention.
100 is a convection cooling system, 101 is a fan, 102 is a frequency converter, 103 is a rectification structure, 104 is an air channel, 105 is a water cooling layer, 106 is a wind tunnel support, 107 is a first shock pad, 108 is a second shock pad, 200 is a radiation heating system, 201 is an infrared radiation heater, 202 is an infrared heating control cabinet, 203 is a sample box, 2031 is a ceramic plate, 204 is an observation window, 205 is a heating fixing band, 206 is a water cooling radiation shielding plate, 207 is a shielding mounting support, 300 is a mass loss rate measuring component, 301 is an electronic balance, 302 is a support frame, 400 is an infrared thermal imaging component, 401 is a high-speed infrared camera, 402 is an infrared camera fixing support, 500 is a DV camera, 501 is a camera, 502 is a DV fixing support, 600 is a wind speed measuring component, and 601 is a hot-wire anemometer.
Detailed Description
In view of the above, the core of the present invention is to provide a material ignition simulation experiment apparatus to further disclose the ignition mechanism of the fire spreading fuel.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, the embodiment of the present invention discloses a material ignition simulation experiment apparatus, which includes a sample box 203, a convection cooling system 100 and a radiation heating system 200.
Wherein the sample box 203 is used for placing a sample, the convection cooling system 100 is used for applying a convection cooling environment to the sample in the sample box 203, the radiation heating system 200 is used for radiation heating to the sample in the sample box 203, and the convection cooling system 100 and the radiation heating system 200 are independent from each other.
When the material provided by the invention is used for igniting the simulation experiment device, the sample in the sample box 203 is heated by radiation through the radiation heating system 200, that is, providing an environment for the sample that can simulate radiant heating, applying a convective cooling environment to the sample in the sample cartridge 203 via the convective cooling system 100, since the convection cooling system 100 and the radiant heating system 200 are independent of each other, the radiant heating system 200 can be turned on alone, namely, the radiation heating environment is simulated independently, the convection cooling system 100 and the radiation heating system 200 can be started simultaneously, the ignition simulation experiment working condition of the sample is not limited to only simulating the radiation heating, the simulation of the convection cooling environment and the simulation of the radiation heating environment are combined, so that the more complex sample ignition environment is simulated, the working condition selection of a sample ignition simulation experiment is facilitated, and the deep research on the combustion characteristic of a fire spreading material is facilitated.
It should be noted that the present invention does not limit the specific structural forms of the convection cooling system 100 and the radiation heating system 200, and any structure capable of applying a convection cooling environment to the sample in the sample box 203 and any structure capable of heating the sample by radiation are within the protection scope of the present invention; preferably, embodiments of the present invention provide a specific configuration of the convective cooling system 100 and the radiant heating system 200.
As shown in fig. 1, the convection cooling system 100 includes a fan 101, a frequency converter 102 electrically connected to the fan 101, a rectification structure 103 disposed at an air outlet of the fan 101, an air duct 104 communicated with the rectification structure 103, and a water cooling layer 105 disposed on a side wall of the air duct 104. The rotational speed of the fan 101 is adjusted by the frequency converter 102, so that the air speed of the air outlet of the fan 101 can be adjusted, and the air speed of the convection cooling system 100 can be adjusted. The rectification structure 103 arranged at the air outlet of the fan 101 rectifies the air flow at the air outlet of the fan 101, the rectified air flow enters the air duct 104, a convection cooling environment is simulated by convection at a high air speed in the air duct 104, and meanwhile, the water cooling layer 105 arranged on the inner wall of the air duct 104 reduces high radiant heat flux brought by the radiant heating system 200 and reduces the influence on the inner wall of the air duct 104. The sample box 203 is disposed inside the air duct 104 on a side close to the water-cooled layer 105 so as to be disposed opposite to the infrared radiation heater 201 described below, so that a heating lamp heating region of the infrared radiation heater 201 described below is directed toward the sample box 203, thereby reducing radiation heat loss of the infrared radiation heater 201.
It should be noted that the rectifying structure 103 may be a honeycomb type gas rectifier, a rectifier type gas rectifier, or other rectifying structures 103 with specific structures, which are directly available in the market, and any type that can rectify the airflow at the air outlet of the fan 101 is within the protection scope of the present invention; preferably, as shown in fig. 1, the embodiment of the present invention provides a specific fairing structure 103, wherein the fairing structure 103 comprises a conical fairing, a honeycomb core and a screen mesh which are arranged on the fairing, the diameter of the fairing gradually decreases along the direction of the fan 101 approaching the air duct 104, and the central axis of the fairing structure 103, the central axis of the fan 101 and the central axis of the air duct 104 are in the same line, so as to reduce the loss of air flow.
The frequency converter 102 can adjust the rotating speed of the fan, so as to adjust the wind speed of the convection cooling system 100, and the frequency converter 102 and the rectification structure 103 are matched to adjust the change rate of the section wind speed in the air duct 104.
It should be noted that, the invention does not specifically limit the wind speed and the cross-section wind speed change rate of the convection cooling system 100, and in practical application, the selection of the frequency converter 102 and the fan 101 may be adaptively adjusted according to the requirements of the combustion experiment working conditions, and the specific size of the rectification structure 103 may be adaptively adjusted, so as to meet the requirements of different wind speed range adjustments and different cross-section wind speed change rate adjustments; preferably, the wind speed of the convection cooling system 100 provided by the embodiment of the invention can be set at will within a range of 0-50 m/s, and the change rate of the wind speed of the cross section of the air channel 104 is less than 5%, so that the material ignition simulation experiment device can reach a high cooling wind speed, and meanwhile, the airflow of the air channel 104 can be controlled more accurately, and the combustion characteristics of the forest combustible materials can be measured finely.
In addition, the invention does not specifically limit the parameters such as the length and the inner diameter of the fan 101 and the air duct 104, and the parameters such as the inner diameter, the taper and the length of the rectification structure 103, and in practical application, the parameters of the fan 101 and the air duct 104 and the parameters of the rectification structure 103 can be adaptively adjusted according to practical requirements, and any structure which can meet the use requirements belongs to the protection scope of the invention; preferably, the fan 101 provided by the invention has an outer diameter of 680mm, an inner diameter of 600mm and a length of 570 mm.
Further, the convective cooling system 100 further includes a wind tunnel bracket 106 for supporting the wind tunnel 104 and a first shock pad 107 disposed at the bottom of the wind tunnel bracket 106, so that the wind tunnel bracket 106 is buffered by the first shock pad 107, and adverse effects of vibration on the material ignition simulation experiment device are reduced.
The first shock pad 107 may be a rubber shock pad, foam or a shock felt, and the like, and any type that can meet the use requirement is within the protection scope of the present invention; preferably, the first shock absorbing pad 107 provided by the embodiment of the present invention is a rubber shock absorbing pad.
The radiant heating system 200 provided by the invention comprises an infrared radiation heater 201 arranged on one side of the air duct 104 far away from the water cooling layer 105 and an infrared heating control cabinet 202 capable of adjusting the heating intensity of the infrared radiation heater 201, so that the heating intensity of the infrared radiation heater 201 is controlled by the infrared heating control cabinet 202, and different working condition requirements of a combustion simulation experiment are met.
It should be noted that, the invention does not specifically limit the radiant heat flux that the radiant heating system 200 can provide, and in practical applications, the heating intensity of the infrared radiant heaters 201 can be adaptively adjusted or the number of the infrared radiant heaters 201 can be increased according to the requirement of the combustion simulation experiment on the radiant heat flux, and any setting mode that can meet the requirement of the radiant heat flux falls within the protection scope of the invention; preferably, the radiant heat flux of the radiant heating system 200 provided by the invention can be 0-110 kW/m2The range is arbitrarily set so as to provide a radiation heating environment of high radiation heat flux in combination with a high wind speed convection cooling environment, thereby facilitating disclosure of the combustion characteristics of the fire-spreading fuel in combination with the high wind speed convection cooling environment and the high radiation heat flux environment.
Further, the radiant heating system 200 further includes a water-cooled radiation shielding plate 206 disposed between the sample box 203 and the infrared radiation heater 201, so that the water-cooled radiation shielding plate 206 shields the infrared radiation heater 201 and the sample in the sample box 203, and reduces an additional radiant heat flux received by the sample when the infrared radiation heater 201 is not in stable operation. After the infrared radiation heater 201 operates stably, the water-cooling radiation shielding plate 206 is taken away, so that the sample is quickly exposed to the radiation heating lamp of the infrared radiation heater 201, and the material ignition simulation experiment phenomenon and the data accuracy are improved.
The water-cooled radiation shielding plate 206 may be of a drawing type or a direct type, and any type that can satisfy the shielding requirement is within the scope of the present invention.
In addition, the radiant heating system 200 further includes an observation window 204 disposed at both sides of the air duct 104 and a heating fixing band 205 for fixing the infrared radiation heater 201, so as to observe the combustion condition of the sample through the observation window 204, and the infrared radiation heater 201 is fixed to the air duct through the heating fixing band 205, so that the heating area of the heating lamp of the infrared radiation heater 201 faces the sample box 203 at the bottom of the air duct 104. Specifically, as shown in fig. 1, a 16cm × 13cm installation hole is cut right above the air duct 104, and the infrared radiation heater 201 is installed right above the air duct 104 by the heat fixing band 205, so that the heat generating area of the heating lamp of the infrared radiation heater 201 faces the sample box 203 at the bottom of the air duct 104, thereby reducing the radiation heat loss of the infrared radiation heater 201.
The material of the observation window 204 may be quartz glass, transparent high temperature resistant polycarbonate plate, or paml plate, and any type that can observe the combustion of the sample through the observation window 204 falls within the protection scope of the present invention; preferably, embodiments of the present invention employ quartz glass windows.
The internal shape and specific size of the sample box 203 provided by the present invention are not limited, and any internal shape and size that can meet the use requirements are within the protection scope of the present invention; preferably, the sample case 203 provided in the present invention has an internal shape of a square body having a specific size of 10cm × 10cm × 3cm (depth), and the side wall and the bottom of the sample case 203 are provided with ceramic plates 2031 so that the ceramic plates 2031 receive a high temperature of the material when the material is then applied, and the internal size of the sample case 203 after laying the ceramic plates 2031 is 80mm × 80mm × 20mm (depth).
The material of the sample box 203 provided by the invention can be aluminum, copper or stainless steel, and the like, and the structure which can meet the use requirement belongs to the protection scope of the invention; preferably, the sample cartridge 203 provided by the present invention is a stainless steel housing.
Further, the infrared radiation heater 201 provided by the present invention includes two radiation application modes, which are an intermittent radiation application mode and a continuous radiation application mode, respectively, so that the infrared radiation heater 201 is adjusted to a radiation heating mode in which the heating heat flow value changes continuously with time through adjustment of the radiation application modes.
Furthermore, the material ignition simulation experiment device provided by the invention further comprises an experiment measuring system, so that the combustion characteristic parameters of the sample can be collected through the experiment measuring system, and the combustion characteristics of the sample can be deeply revealed.
Specifically, the experimental measurement system comprises a mass loss rate measurement component 300, an infrared thermal imaging component 400, a DV camera component 500, a wind speed measurement component 600, a thermocouple temperature measurement component, a heat flow measurement component and a data processor.
The mass loss rate measuring assembly 300 comprises an electronic balance 301 and a support frame 302 arranged on the electronic balance 301, so that the sample box 203 is arranged on the support frame 302, the sample box 203 is supported by the support frame 302, the mass loss of the sample in the ignition simulation experiment process is measured by the electronic balance 301, and the mass loss rate of the sample in the ignition simulation experiment process is calculated, so that the relationship between the mass loss rate of the fire spreading fuel and the combustion characteristic of the fire spreading fuel is revealed; and the air duct 104 is provided with an opening through which the sample box 203 can pass, and the top of the sample box 203 is flush with the bottom of the inner wall of the air duct 104, so as to reduce the resistance of the sample box 203 to the air flow in the air duct 104.
The infrared thermal imaging assembly 400 comprises a height infrared camera 401 and an infrared camera fixing support 402, the infrared camera 401 is electrically connected with a data processor, so that an infrared radiation energy distribution signal generated when a sample is burnt is collected through the infrared camera 401, the energy distribution signal is converted into an electric signal and transmitted to the data processor, the infrared radiation energy distribution signal is converted into an infrared thermal image which can be visually seen through the data processor, and therefore the relation between the infrared thermal image and the burning characteristics of the sample is researched; in addition, the infrared camera fixing bracket 402 can support and adjust the height and the camera angle of the high-speed infrared camera 401, so that the height and the camera angle of the high-speed infrared camera 401 can be adjusted through the infrared camera fixing bracket 402, and the high-speed infrared camera 401 can obtain a more accurate infrared thermal image.
The DV camera shooting assembly 500 comprises a camera 501 and a DV fixing support 502, wherein the camera 501 is electrically connected with a data processor, so that combustion video information of a sample in the ignition simulation experiment process is collected through the camera 501 and transmitted to the data processor, and the relation between the combustion condition and the combustion characteristic of the sample is researched; and the DV fixing bracket 502 can support and adjust the height and shooting angle of the camera 501, so that the height and shooting angle of the camera 501 can be adjusted to a suitable shooting position by the DV fixing bracket 502, thereby improving the shooting quality of the camera 501.
The wind speed measuring assembly 600 comprises a hot wire anemometer 601 and a horizontal displacement bracket, the position of the hot wire anemometer 601 in the horizontal direction can be adjusted through the horizontal displacement bracket, so that the air speed in the air duct 104 can be measured through the hot wire anemometer 601 and the horizontal displacement bracket, and the position of the hot wire anemometer 601 in the horizontal direction can be adjusted through the horizontal displacement bracket, so that the speed distribution under the working condition required by the measurement experiment is met; meanwhile, the hot wire anemometer 601 is electrically connected to the data processor so as to convert the air flow velocity detected by the hot wire anemometer 601 into an electrical signal, which is sent to the data processor to study the relationship between the air flow velocity and the combustion characteristics of the sample.
The thermocouple temperature measurement assembly comprises a thermocouple arranged on the surface or inside of the sample, the thermocouple is electrically connected with the data processor, so that the temperature signal of the sample during combustion can be collected through the thermocouple, the collected temperature signal is converted into an electric signal to be transmitted to the data processor, and the relation between the temperature and the combustion characteristic of the sample can be researched.
The heat flow measurement assembly includes a bolometer disposed at a location of sample cartridge 203, the bolometer being electrically connected to a data processor to facilitate measurement of radiant heat flux by the bolometer prior to a formal test to calibrate the infrared radiant heater.
As shown in fig. 1, the mass loss rate measuring assembly 300 further includes a second shock pad 108 disposed between the electronic balance 301 and the supporting frame 302, so that the second shock pad 108 reduces the rigid impact between the electronic balance 301 and the supporting frame 302, and plays a role in buffering, thereby reducing the adverse effect of the shock on the material ignition simulation experiment apparatus.
Similarly, the second cushion 108 may be a rubber cushion, foam, or felt, and the like, and any type that can meet the use requirement is within the scope of the present invention; preferably, the second cushion 108 provided by the embodiment of the present invention is a rubber cushion.
The terms "first" and "second," and the like in the description and claims of the present invention and the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not set forth for a listed step or element but may include steps or elements not listed.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A material ignition simulation experiment device, comprising:
a sample cartridge for holding a sample;
a convective cooling system for applying a convective cooling environment to the sample in the sample cartridge; and
a radiant heating system for radiatively heating the sample in the sample cartridge, the convective cooling system and the radiant heating system being independent of each other.
2. The experimental device for simulating material ignition according to claim 1, wherein the convection cooling system comprises a fan, a frequency converter electrically connected to the fan, a rectifying structure disposed at an air outlet of the fan, an air duct communicated with the rectifying structure, and a water cooling layer disposed on an inner wall of the air duct, the frequency converter is capable of adjusting a rotation speed of the fan to adjust an air speed of the air outlet of the fan, and the sample box is disposed inside the air duct near one side of the water cooling layer.
3. The material ignition simulation experiment device according to claim 2, wherein the convection cooling system further comprises a wind tunnel support for supporting the wind tunnel and a first shock pad arranged at the bottom of the wind tunnel support.
4. The material ignition simulation experiment device as claimed in claim 2, wherein the radiant heating system comprises an infrared radiant heater arranged on one side of the air duct far away from the water cooling layer and an infrared heating control cabinet capable of adjusting the heating intensity of the infrared radiant heater.
5. The material ignition simulation experiment device of claim 4, wherein the radiant heating system further comprises a water-cooling radiation shielding plate arranged between the sample box and the infrared radiation heater, and the water-cooling radiation shielding plate is of a drawing type or a direct type.
6. The material ignition simulation experiment device according to claim 4, wherein the radiant heating system further comprises observation windows arranged on two sides of the air duct and a heating fixing belt for fixing the infrared radiant heater.
7. The material ignition simulation experiment device of claim 4, wherein the infrared radiation heater comprises two radiation application modes, namely an intermittent radiation application mode and a continuous radiation application mode.
8. The material ignition simulation experiment device as claimed in claim 1, wherein the sample box is a stainless steel shell, and the side wall and the bottom of the sample box are both provided with a ceramic plate or fireproof cotton.
9. The material ignition simulation experiment device of claim 1, further comprising an experimental measurement system for collecting combustion characteristic parameters of the sample, wherein the experimental measurement system comprises a mass loss rate measurement component, an infrared thermal imaging component, a DV camera component, a wind speed measurement component, a thermocouple temperature measurement component, a heat flow measurement component and a data processor;
the mass loss rate measuring assembly comprises an electronic balance and a support frame arranged on the electronic balance, and the sample box is arranged on the support frame;
the infrared thermal imaging assembly comprises a high-speed infrared camera and an infrared camera fixing support, the infrared camera is electrically connected with the data processor, and the infrared camera fixing support can support and adjust the height and the camera angle of the high-speed infrared camera;
the DV camera shooting assembly comprises a camera and a DV fixing support, the camera is electrically connected with the data processor, and the DV fixing support can support and adjust the height and the shooting angle of the camera;
the wind speed measuring assembly includes a hot-wire anemometer and a horizontal displacement bracket, by which a position of the hot-wire anemometer in a horizontal direction can be adjusted, the hot-wire anemometer being electrically connected to the data processor, and the horizontal displacement bracket being horizontally movable;
the thermocouple temperature measuring assembly comprises a thermocouple arranged on the surface or in the sample, and the thermocouple is electrically connected with the data processor;
the heat flow measurement assembly includes a bolometer disposed at a location of the sample cartridge, the bolometer being electrically connected with the data processor.
10. The material ignition simulation experiment device of claim 9, wherein the mass loss rate measurement assembly further comprises a second shock pad disposed between the electronic balance and the support frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110913349.4A CN113624908A (en) | 2021-08-10 | 2021-08-10 | Material ignition simulation experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110913349.4A CN113624908A (en) | 2021-08-10 | 2021-08-10 | Material ignition simulation experiment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113624908A true CN113624908A (en) | 2021-11-09 |
Family
ID=78384060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110913349.4A Pending CN113624908A (en) | 2021-08-10 | 2021-08-10 | Material ignition simulation experiment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113624908A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201307109Y (en) * | 2008-11-21 | 2009-09-09 | 中国科学技术大学 | Multi-parameter coupling fire spread tester |
| CN103234998A (en) * | 2013-04-25 | 2013-08-07 | 哈尔滨工业大学 | High heating flux solar full-spectrum radiation heating device |
| CN103454375A (en) * | 2013-08-30 | 2013-12-18 | 金发科技股份有限公司 | Sample containing device for cone calorimeter and method for measuring fused solid and liquid samples by using same |
| CN104165749A (en) * | 2014-08-29 | 2014-11-26 | 中国计量学院 | Experimental device for simulating influence mechanism to flame structure flow field characteristics of bottom cross wind |
| CN105388248A (en) * | 2015-12-31 | 2016-03-09 | 中国人民解放军国防科学技术大学 | Micrometer order solid particle ignition burning test device under jet stream condition |
| CN108008062A (en) * | 2017-11-23 | 2018-05-08 | 中国航发北京航空材料研究院 | Laser ignition combustion chamber is used in a kind of titanium fire experiment |
| CN210267213U (en) * | 2019-05-06 | 2020-04-07 | 森诺科技有限公司 | Full premix combustion head with bulkhead low-nitrogen combustor |
| CN111323343A (en) * | 2020-04-14 | 2020-06-23 | 西安近代化学研究所 | Powder combustion experiment platform |
| CN112684100A (en) * | 2021-01-04 | 2021-04-20 | 大连理工大学 | Experimental device for simulating spontaneous combustion process of underground closed space coal and using method |
| CN112697953A (en) * | 2020-11-27 | 2021-04-23 | 中国矿业大学 | Cable combustion and pyrolysis characteristic test system and test method under multi-variable-parameter environment condition |
| CN113109284A (en) * | 2021-03-31 | 2021-07-13 | 桂林理工大学 | Spectrum test platform for low-carbon chemical combustion products |
-
2021
- 2021-08-10 CN CN202110913349.4A patent/CN113624908A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201307109Y (en) * | 2008-11-21 | 2009-09-09 | 中国科学技术大学 | Multi-parameter coupling fire spread tester |
| CN103234998A (en) * | 2013-04-25 | 2013-08-07 | 哈尔滨工业大学 | High heating flux solar full-spectrum radiation heating device |
| CN103454375A (en) * | 2013-08-30 | 2013-12-18 | 金发科技股份有限公司 | Sample containing device for cone calorimeter and method for measuring fused solid and liquid samples by using same |
| CN104165749A (en) * | 2014-08-29 | 2014-11-26 | 中国计量学院 | Experimental device for simulating influence mechanism to flame structure flow field characteristics of bottom cross wind |
| CN105388248A (en) * | 2015-12-31 | 2016-03-09 | 中国人民解放军国防科学技术大学 | Micrometer order solid particle ignition burning test device under jet stream condition |
| CN108008062A (en) * | 2017-11-23 | 2018-05-08 | 中国航发北京航空材料研究院 | Laser ignition combustion chamber is used in a kind of titanium fire experiment |
| CN210267213U (en) * | 2019-05-06 | 2020-04-07 | 森诺科技有限公司 | Full premix combustion head with bulkhead low-nitrogen combustor |
| CN111323343A (en) * | 2020-04-14 | 2020-06-23 | 西安近代化学研究所 | Powder combustion experiment platform |
| CN112697953A (en) * | 2020-11-27 | 2021-04-23 | 中国矿业大学 | Cable combustion and pyrolysis characteristic test system and test method under multi-variable-parameter environment condition |
| CN112684100A (en) * | 2021-01-04 | 2021-04-20 | 大连理工大学 | Experimental device for simulating spontaneous combustion process of underground closed space coal and using method |
| CN113109284A (en) * | 2021-03-31 | 2021-07-13 | 桂林理工大学 | Spectrum test platform for low-carbon chemical combustion products |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Quintiere | A simulation model for fire growth on materials subject to a room-corner test | |
| CN103389254B (en) | Experiment device for fire spread characteristics of thermal insulation material under external adjustable constant radiation condition | |
| CN105651809A (en) | Experimental device for particle combustion under high speed air flow | |
| CN110441467A (en) | A kind of lower solid fuel varied angle fire spread experimental provision of ambient wind effect | |
| US2632435A (en) | Wall mounted fuel burning space heater | |
| CN105067655B (en) | A kind of flame retardant cable vertical combustibility test device under the conditions of barrel-shaped ring-type radiant heating | |
| WO2020019577A1 (en) | Battery thermal runaway experiment apparatus, system, and method thereof | |
| CN109100464A (en) | The building wall body insulating board material fire combustion characteristics test device of adjustable complex configuration | |
| CN207528673U (en) | A kind of superhigh temperature fire resisting test device for fire proofing material | |
| CN208548090U (en) | A kind of tunnel fire hazard simulator of variable radian | |
| CN110044961A (en) | A kind of observation experiment device and method of dust layer fire spread behavior | |
| CN104456787A (en) | Multifunctional fan heater | |
| CN103234998B (en) | High heating flux solar full-spectrum radiation heating device | |
| CN113624908A (en) | Material ignition simulation experiment device | |
| CN104865289B (en) | A kind of pavement heat radiation tester | |
| KR20090010551A (en) | Temperature-swing cone-calorimeter and its combustibility experimental method | |
| Thomsen et al. | Downward flame spread rate over PMMA rods under external radiant heating | |
| CN208873378U (en) | A kind of simulator that research wind environment moderate heat overflow is spread in long-narrow confined space | |
| CN113888950A (en) | Village historic building fire induces building group fire simulation experiment device under effect of environmental wind | |
| CN212410486U (en) | Device for testing combustion characteristics of heat insulation material in limited space under wind direction changing condition | |
| CN114280215B (en) | Forest fire experiment platform capable of simulating environmental wind and terrain coupling | |
| CN108288428B (en) | Tunnel fire simulation device with variable radian and method thereof | |
| Ferkul et al. | Flammability aspects of fabric in opposed and concurrent air flow in microgravity | |
| CN217546611U (en) | Inverter device capable of automatically detecting temperature in real time | |
| CN216696139U (en) | Radian-variable curved surface wall heat-insulation board testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211109 |