CN111189959A - Comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spreading characteristics - Google Patents
Comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spreading characteristics Download PDFInfo
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- CN111189959A CN111189959A CN202010021016.6A CN202010021016A CN111189959A CN 111189959 A CN111189959 A CN 111189959A CN 202010021016 A CN202010021016 A CN 202010021016A CN 111189959 A CN111189959 A CN 111189959A
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Abstract
The invention provides a comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics, which comprises the following steps: the device comprises a support frame, a sealing device, a measuring device, a heating device, a camera device, a tail gas treatment device, a temperature monitoring device and an igniter, wherein the heating device and the temperature detecting device can process powder and monitor the environmental temperature in real time; the measuring device can accurately detect the mass loss of the powder in the combustion and pyrolysis processes, the camera device can detect the combustion change condition of the powder and the flame form during the combustion of the powder, and the tail gas treatment device can treat waste gas generated by the combustion; the invention is convenient to operate and can provide combustion and pyrolysis experimental environment with air circulation conditions for powder.
Description
Technical Field
The invention relates to a material combustion behavior measuring device, in particular to a comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spreading characteristics.
Background
With the progress and development of science and technology, more and more new materials are applied to our lives. The emergence of new materials not only greatly promotes the innovation of engineering technology, but also brings potential safety hazards. This is because many of the security attributes of new materials are not well known and the new materials exist in a wide variety of forms, such as nanoporous structures, nanosheet structures, etc., and these new security properties and microstructures make the new materials present unpredictable security risks. Thermal hazards are one of the important manifestations of safety risks. In order to understand the pyrolysis, combustion and fire spreading and propagation characteristics of some new materials at present, the new materials exist in powder state, such as: nano-porous silica aerogel, graphene and the like, a new testing means and a new technical platform need to be developed urgently to help people to better identify the risk of thermal hazard of a new material and make corresponding thermal prevention and control measures.
There are many instruments and devices for measuring combustion pyrolysis of solids on the world, such as thermogravimetric-infrared analyzers developed by american companies, which analyze combustion pyrolysis by placing a sample in a combustion furnace and heating it at a constant rate, and then analyzing the gas resulting from weight loss by infrared spectroscopy, but these instruments mainly characterize the exothermic (endothermic) thermal characteristics or mechanism of a substance by a trace amount of the sample, and lack an intuitive test for the thermal hazard characteristics on a macro scale. At present, the domestic same industry (chinese patent application No. 201710638432.9) discloses a device for testing the combustion behavior of a massive solid, which can measure the mass loss rate of a sample, but still cannot test or characterize the characteristics of a pyrolysis zone, the combustion behavior and the fire spreading characteristic of a powder or a powder composite material, and cannot provide test conditions such as controllable wind speed and the like.
The number of test means and technical platforms specially used for studying powder pyrolysis, combustion and fire spreading characteristics and providing controllable wind speed conditions in the market is small, so that a set of experimental device specially designed for powder pyrolysis and combustion characteristics and fire spreading characteristics is necessary.
Disclosure of Invention
The invention provides a comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spreading characteristics, and aims to provide a powder combustion experiment device which can control wind speed conditions, process combustion tail gas and shoot flame forms and the change process of the combustion and pyrolysis forms.
In order to achieve the above object, an embodiment of the present invention provides a comprehensive experimental platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics thereof, including:
the supporting frame is provided with an upper layer and a lower layer;
the sealing device comprises a high-temperature-resistant cotton plate, the high-temperature-resistant cotton plate is arranged at the lower layer of the supporting frame, and the high-temperature-resistant cotton plate sequentially consists of two layers of aluminum silicate cotton plates and one layer of high-aluminum cotton plate from bottom to top; the sealing device further comprises two clamping side plates, the two clamping side plates are fixedly mounted between the upper-layer two-side frames of the supporting frame through two end heads, a top plate is arranged above the two clamping side plates, two ends of the top plate are erected on the two clamping side plates, side baffles are mounted below the two clamping side plates, a first baffle and a second baffle are respectively arranged below the other two ends of the top plate, the second baffle is movably mounted, and the top plate, the high-temperature-resistant cotton plate, the first baffle, the second baffle, the side baffles and the clamping side plates jointly form a sealed space; the clamping side plate, the top plate, the first baffle plate and the second baffle plate are all made of mullite materials;
the measuring device comprises an electronic balance and a monitoring terminal, the electronic balance is arranged at the central position above the high-temperature-resistant cotton plate, the outside of the electronic balance is wrapped with a heat-insulating material, and the monitoring terminal is arranged outside the sealing device;
and the heating device comprises a plurality of heating pipes which are uniformly clamped between the two clamping side plates.
The device comprises a camera device, a camera and a camera tripod, wherein the camera device is provided with a camera and a camera tripod; the side baffle is made of quartz glass, the camera is arranged on the outer side of the side baffle through the camera tripod, and the lens of the camera is opposite to the electronic balance.
The camera adopts a high-definition camera with an optical zooming function.
Wherein, still be provided with tail gas processing apparatus, tail gas processing apparatus includes: the device comprises an air conditioner, an air inlet pipe, an exhaust pipe and a tail gas treatment box; through holes are formed in the first baffle and the second baffle, the air conditioner is communicated with the through holes of the first baffle through the air inlet pipe, and the tail gas treatment box is communicated with the through holes of the second baffle through the exhaust pipe.
The tail gas treatment device further comprises a wind speed detector which is movably arranged along the direction of the through hole of the first baffle plate and the direction of the through hole of the second baffle plate.
The wind speed detector is a high-precision thermosensitive anemometer, the detection precision of the wind speed detector is +/-2%, and the measurement range is 0.1-25 m/s.
Wherein, still be provided with temperature monitoring device, temperature-detecting device includes thermocouple array and thermocouple instrument, the thermocouple array is including a plurality of thermocouples, the thermocouple is evenly arranged on the cotton board of a high temperature resistant bearing, the probe of thermocouple will the cotton board of high temperature resistant bearing pierces through to can reciprocate, the bottom of thermocouple is fixed through thermocouple fixed bolster on the cotton board of high temperature resistant bearing, carry the thermocouple array the cotton board of high temperature resistant bearing is put in the electronic balance top, the thermocouple through the parcel have the high temperature resistant wire of heat-insulating material with the thermocouple instrument electricity is connected.
The thermocouple arrays are S-type platinum rhodium thermocouples, and the temperature measuring range of the thermocouples is 0-1600 ℃.
And an igniter is also arranged above the electronic balance.
The electronic balance is a high-precision electronic balance, the measuring range of the electronic balance is 10mg-3200g, the measuring precision is 0.1mg, and the electronic balance is electrically connected with the monitoring terminal through a high-temperature-resistant lead wrapped with a heat insulating material.
The scheme of the invention has the following beneficial effects:
according to the comprehensive experiment platform for testing the powder pyrolysis and combustion characteristics and the fire spread characteristics, the sealing device, the measuring device, the heating device, the camera device, the tail gas treatment device, the temperature monitoring device and the igniter are arranged, so that the pyrolysis and combustion characteristics and the fire spread characteristics of the powder can be detected under the conditions of controlling the temperature and the air flow rate; the heating device and the temperature detection device can process the powder and monitor the environmental temperature in real time, the measuring device can accurately monitor the real-time weight and the loss weight of the powder in the combustion and pyrolysis processes, the camera device can shoot the powder combustion change condition and the flame shape of the powder during combustion in real time, and the tail gas treatment device can treat waste gas generated by combustion and collect the powder blown away under the condition of wind speed to avoid dust pollution; the invention is convenient to operate and can provide experimental environments for combustion and pyrolysis of powder.
Drawings
FIG. 1 is a schematic front structural view of a comprehensive experimental platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics thereof according to the present invention;
FIG. 2 is a rear schematic structural view of a comprehensive experimental platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics thereof according to the present invention;
FIG. 3 is a schematic view of a part of the structure of the comprehensive experimental platform for testing the powder pyrolysis and combustion characteristics and the fire spread characteristics thereof;
FIG. 4 is a cross-sectional view A-A of a comprehensive experimental platform for testing powder pyrolysis and combustion characteristics and its fire spread characteristics in accordance with the present invention;
FIG. 5 is a B-B cross-sectional view of a comprehensive experimental platform for testing powder pyrolysis and combustion characteristics and its fire spread characteristics in accordance with the present invention;
fig. 6 is a schematic view of an electronic balance and a thermocouple of a comprehensive experimental platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics thereof.
[ description of reference ]
1-a support frame; 2-aluminum silicate cotton board; 3-high aluminum cotton board; 4-clamping the side plate; 5-a top plate; 6-side baffle; 7-a first baffle; 8-a second baffle; 9-electronic balance; 10-monitoring terminal; 11-heating tube; 12-a camera; 13-camera tripod; 14-an air conditioner; 15-air inlet pipe; 16-an exhaust pipe; 17-a tail gas treatment tank; 18-wind speed detector; 19-a thermocouple; 20-thermocouple instrumentation; 21-thermocouple fixing support; 22-an igniter; 23-high temperature resistant bearing cotton board.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
Aiming at the existing lack of combustion and pyrolysis experimental environment with air circulation condition specially provided for powder, the invention provides a comprehensive experimental platform for testing powder pyrolysis and combustion characteristics and fire spreading characteristics.
As shown in fig. 1, an embodiment of the present invention provides a comprehensive experimental platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics thereof, including: the supporting frame 1 is provided with an upper layer and a lower layer; the sealing device comprises a high-temperature-resistant cotton plate, the high-temperature-resistant cotton plate is arranged on the lower layer of the support frame 1, and the high-temperature-resistant cotton plate sequentially consists of two layers of aluminum silicate cotton plates 2 and one layer of high-aluminum cotton plate 3 from bottom to top; the sealing device further comprises two clamping side plates 4, the two clamping side plates 4 are fixedly arranged between the two upper-layer side frames of the support frame 1 through two end heads, a top plate 5 is arranged above the two clamping side plates 4, two ends of the top plate 5 are erected on the two clamping side plates 4, side baffles 6 are arranged below the two clamping side plates 4, a first baffle 7 and a second baffle 8 are arranged below the other two ends of the top plate 5 respectively, the second baffle 8 is movably arranged, and the top plate 5, the high-temperature-resistant cotton plate, the first baffle 7, the second baffle 8, the side baffles 6 and the clamping side plates 4 form a sealed space together; the clamping side plate 4, the top plate 5, the first baffle 7 and the second baffle 8 are all made of mullite materials; the measuring device comprises an electronic balance 9 and a monitoring terminal 10, wherein the electronic balance 9 is arranged at the center above the high-temperature-resistant cotton plate, the outside of the electronic balance 9 is wrapped with a heat-insulating material, and the monitoring terminal 10 is arranged outside the sealing device; the heating device comprises a plurality of heating pipes 11, and the plurality of heating pipes 11 are uniformly clamped between the two clamping side plates 4.
The comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spreading characteristics of the powder pyrolysis and combustion characteristics comprises a support frame 1 made of metal, wherein the periphery of a rod body of the support frame 1 is wrapped with a heat insulating material, and the heat insulating material is a composite material for insulating heat, and comprises the following components in parts by weight: a composite of ceramic fibers and glass fibers; the high-temperature-resistant cotton plate arranged on the lower layer of the support frame 1 can effectively isolate heat penetrating downwards during heating and powder combustion; the clamping side plates 4 are used for clamping the heating pipes 11, a plurality of heating pipes 11 are uniformly inserted between the clamping side plates 4, through holes are formed in the clamping side plates 4 and used for inserting the heating pipes 11, the connecting wires of the installed heating pipes 11 are wrapped with the heat insulating materials and led out through the through holes, then the heat insulating materials are connected with a power supply, after the power supply connecting wires are led out, the through holes are blocked by cement to prevent heat from being released from holes, the plurality of heating pipes 11 can provide the high temperature of 1500 ℃ at most, and the temperature can be controlled by connecting the heating pipes 11 with different numbers; the electronic balance 9 is arranged right below the heating pipes 11, the periphery of the electronic balance 9 is wrapped by the heat insulating material, a layer of aluminum silicate cotton plate and a layer of high-aluminum cotton plate are further arranged outside the heat insulating material to isolate heat and protect the electronic balance 9, the top of a tray of the electronic balance 9 is used for placing a high-temperature resistant cotton plate loaded with a thermocouple array 19, the high-temperature resistant cotton plate is used for placing corresponding powder experimental materials, and the monitoring terminal 10 is used for monitoring the weighing value of the electronic balance 9 in real time; the second baffle 8 is movably mounted, so that the second baffle 8 can be detached for placing and replacing experimental materials.
The device also comprises a camera device, wherein the camera device is provided with a camera 12 and a camera tripod 13; the side baffle 6 is made of quartz glass, the camera 12 is erected outside the side baffle 6 through the camera tripod 13, and the lens of the camera 12 is over against the electronic balance 9.
The camera 12 is a high-definition camera with an optical zoom function.
According to the comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spreading characteristics in the embodiment of the invention, the side baffle 6 is made of quartz glass, the quartz glass can insulate heat and has strong high temperature resistance, and meanwhile, the quartz glass has good light transmittance, so that the camera 12 arranged on the outer side of the side baffle 6 can shoot the flame form of the powder material combusted on the electronic balance and the form change of the powder material during combustion or pyrolysis in real time, and the camera tripod 13 arranged at the bottom of the camera 12 can adjust the height of the camera 12 and provide stable shooting conditions; since the video camera 12 is a sony FDR-AX45 video camera having an optical zoom function and is provided with a 4K ultra high definition video camera, the video camera 12 can clearly capture images at a slightly distant position even if the experiment temperature is too high.
Wherein, still be provided with tail gas processing apparatus, tail gas processing apparatus includes: an air conditioner 14, an air inlet pipe 15, an exhaust pipe 16 and a tail gas treatment box 17; through holes are formed in the first baffle 7 and the second baffle 8, the air conditioner 14 is communicated with the through holes of the first baffle 7 through the air inlet pipe 15, and the tail gas treatment box 17 is communicated with the through holes of the second baffle 8 through the exhaust pipe 16.
The tail gas treatment device further comprises a wind speed detector 18, and the wind speed detector 18 is movably mounted along the direction of the through hole of the first baffle plate 7 and the direction of the through hole of the second baffle plate 8.
The wind speed detector 18 is a high-precision thermal anemometer, the detection precision of the wind speed detector 18 is +/-2%, and the measurement range is 0.1-25 m/s.
According to the comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics of the powder pyrolysis and combustion characteristics, through holes are formed in the first baffle plate 7 and the second baffle plate 8, the air conditioner 14 is communicated with the through holes of the first baffle plate 7 through the air inlet pipe 15, and the tail gas treatment box is communicated with the through holes of the second baffle plate 8 through the exhaust pipe 16, so that the exhaust pipe 16 needs to be detached firstly when the second baffle plate 8 is detached; the air conditioner 14 has a function of pumping air, and can simulate the air circulation condition under different wind speed conditions, because the sealing device is a sealed space, air needs to be discharged from the exhaust pipe 16 after flowing in from the air inlet pipe 15, and in order to prevent the influence of waste gas generated by combustion and pyrolysis on experimenters and ambient air, the tail gas treatment box 17 can cool and innocent-treat the hot air flowing out of the exhaust pipe 16, such as: when combustion products are gases such as CO, CO2, steam and the like and some solids, the tail gas treatment box 17 is mainly provided with an aqueous solution containing a small amount of ammonia water and cuprous chloride to absorb CO and cool discharged high-temperature gas according to requirements; meanwhile, the tail gas treatment device also comprises the wind speed detector 18, the detection precision of the wind speed detector 18 is +/-2%, and the measurement range is 0.1-25 m/s, so that the real-time wind speed can be accurately detected by the wind speed detector 18, the air circulation condition can be controlled, and the combustion environment under various air circulation conditions can be simulated; when the wind speed needs to be detected, the wind speed detector 18 needs to be placed in the sealing device in advance, the wind speed detector 18 needs to be placed along the direction from the air inlet pipe 15 to the exhaust pipe 16, and when the detected wind speed reaches the expected wind speed, the wind speed detector 18 is taken out to seal the sealing device again.
Wherein, still be provided with temperature monitoring devices, temperature detection device includes thermocouple array and thermocouple instrument 20, the thermocouple array is including a plurality of thermocouples 19, thermocouple 19 evenly arranges on a high temperature resistant bearing cotton board 23, thermocouple 19's probe will high temperature resistant bearing cotton board 23 pierces through to can reciprocate, thermocouple 19's bottom is fixed through thermocouple fixed bolster 21 on high temperature resistant bearing cotton board 23, carry the thermocouple array high temperature resistant bearing cotton board 23 is put in electronic balance 9 top, thermocouple 19 through the parcel have the high temperature resistant wire of thermal-insulating material with the thermocouple instrument electricity is connected.
The thermocouple 19 is an S-type platinum rhodium thermocouple, and the temperature measuring range of the thermocouple 19 is 0-1600 ℃.
In the comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics in the embodiment of the invention, the thermocouple array is used for detecting the temperature of powder during combustion and the temperature around the probe during non-combustion, the powder pyrolysis and combustion characteristics and the fire spread characteristics are analyzed by collecting the temperature changes of different thermocouples 19, the internal temperature parameters are collected by the thermocouple array and transmitted to the thermocouple instrument 20 through the high temperature resistant lead, meanwhile, the thermocouple array is an S-shaped platinum-rhodium thermocouple, and the temperature measurement range of the thermocouple is between 0 and 1600 ℃.
Wherein, an igniter 22 is also arranged above the electronic balance 9.
In the comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics of the powder pyrolysis and combustion characteristics, the top of the tray of the electronic balance 9 is used for placing a high temperature resistant cotton plate loaded with a thermocouple array 19, the high temperature resistant cotton plate is used for placing corresponding powder experimental materials, and the igniter 22 is further arranged at the high temperature resistant cotton plate loaded with the thermocouple array 19; the igniter 22 may ignite the powder at different locations.
The electronic balance 9 is a high-precision electronic balance, the measuring range of the electronic balance 9 is 10mg-3200g, the measuring precision is 0.1mg, and the electronic balance 9 is electrically connected with the monitoring terminal 10 through a high-temperature-resistant lead wrapped with a heat insulating material.
In the comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics in the embodiment of the invention, the electronic balance 9 is a high-precision seudolis electronic balance, the measurement range of the electronic balance is 10mg-3200g, and the measurement precision of the electronic balance is 0.1mg, so that the electronic balance 9 can accurately detect the loss of powder mass, and meanwhile, the electronic balance 9 is electrically connected with the monitoring terminal 10 arranged outside the sealing device through a high-temperature-resistant lead wrapped with a heat insulating material, so that the mass of an experiment sample can be monitored in real time and transmitted to the monitoring terminal 10.
When the comprehensive experiment platform for testing the powder pyrolysis and combustion characteristics and the fire spreading characteristics is used for carrying out experiment operation, the sealing device and related accessories need to be set up in advance, if the air circulation needs to be controlled in the experiment process, the air conditioner 14 needs to be opened in advance, air is conveyed, the air speed under the stable condition is measured by using the air speed detector 18, when the air speed reaches an expected value, the air conditioner 14 is closed after the air speed parameter is kept, the air speed detector 18 is taken out, the whole device is fed with an experiment material to seal the whole device, the tail gas treatment box 17 is communicated, the heating pipe 11 is used for heating, and if the experiment environment which is relatively closed and anoxic does not need to be set for controlling the air circulation, the experiment material only needs to be fed into the device and is heated by using the heating pipe; during the experiment, the on-off of the heating pipe 11 is properly adjusted according to the size of the expected temperature, when the thermocouple array detects that the temperature near the electronic balance 9 reaches the expected temperature, the igniter 22 is used for igniting the experimental material, the camera 12 arranged beside records the combustion and pyrolysis processes, if the experimental material is not blown up by the ventilation air provided by the air conditioner 14, the electronic balance 9 can be used for monitoring the mass change of the experimental material, the temperature change value recorded by the thermocouple array is used, if the experimental material is blown up by the air conditioner 14, only the initial mass and the combustion pyrolysis state of the experimental material are recorded, finally, the tail gas treatment box 17 is used for carrying out tail gas treatment, and the air conditioner 14 is closed until the experiment is cooled down.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics is characterized by comprising:
the supporting frame is provided with an upper layer and a lower layer;
the sealing device comprises a high-temperature-resistant cotton plate, the high-temperature-resistant cotton plate is arranged at the lower layer of the supporting frame, and the high-temperature-resistant cotton plate sequentially consists of two layers of aluminum silicate cotton plates and one layer of high-aluminum cotton plate from bottom to top; the sealing device further comprises two clamping side plates, the two clamping side plates are fixedly mounted between the upper-layer two-side frames of the supporting frame through two end heads, a top plate is arranged above the two clamping side plates, two ends of the top plate are erected on the two clamping side plates, side baffles are mounted below the two clamping side plates, a first baffle and a second baffle are respectively arranged below the other two ends of the top plate, the second baffle is movably mounted, and the top plate, the high-temperature-resistant cotton plate, the first baffle, the second baffle, the side baffles and the clamping side plates jointly form a sealed space; the clamping side plate, the top plate, the first baffle plate and the second baffle plate are all made of mullite materials;
the measuring device comprises an electronic balance and a monitoring terminal, the electronic balance is arranged at the central position above the high-temperature-resistant cotton plate, the outside of the electronic balance is wrapped with a heat-insulating material, and the monitoring terminal is arranged outside the sealing device;
and the heating device comprises a plurality of heating pipes which are uniformly clamped between the two clamping side plates.
2. The comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics thereof as claimed in claim 1, further comprising a camera device, wherein the camera device is provided with a camera and a camera tripod; the side baffle is made of quartz glass, the camera is arranged on the outer side of the side baffle through the camera tripod, and the lens of the camera is opposite to the electronic balance.
3. The comprehensive experimental platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics thereof as claimed in claim 2, wherein the camera is a high-definition camera with an optical zooming function.
4. The comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics thereof as claimed in claim 1, further comprising a tail gas treatment device, wherein the tail gas treatment device comprises: the device comprises an air conditioner, an air inlet pipe, an exhaust pipe and a tail gas treatment box; through holes are formed in the first baffle and the second baffle, the air conditioner is communicated with the through holes of the first baffle through the air inlet pipe, and the tail gas treatment is communicated with the through holes of the second baffle through the exhaust pipe.
5. The comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics thereof as claimed in claim 4, wherein the tail gas treatment device further comprises an air speed detector movably installed along the direction of the through hole of the first baffle plate and the through hole of the second baffle plate.
6. The comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics thereof as claimed in claim 5, wherein the wind speed detector is a high-precision thermal anemometer, the detection precision of the wind speed detector is ± 2%, and the measurement range is 0.1m/s to 25 m/s.
7. The comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics of the powder pyrolysis and combustion characteristics is characterized by further comprising a temperature monitoring device, wherein the temperature monitoring device comprises a thermocouple array and a thermocouple instrument, the thermocouple array comprises a plurality of thermocouples, the thermocouples are uniformly arranged on a high-temperature-resistant bearing cotton plate, a probe of the thermocouple penetrates through the high-temperature-resistant bearing cotton plate and can move up and down, the bottom of the thermocouple is fixed on the high-temperature-resistant bearing cotton plate through a thermocouple fixing support, the high-temperature-resistant bearing cotton plate carrying the thermocouple array is placed above an electronic balance, and the thermocouple is electrically connected with the thermocouple instrument through a high-temperature-resistant lead wrapped with a heat insulating material.
8. The comprehensive experimental platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics thereof as claimed in claim 6, wherein the thermocouple arrays are all S-type platinum rhodium thermocouples, and the temperature measuring range of the thermocouples is 0-1600 ℃.
9. The comprehensive experimental platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics thereof as claimed in claim 1, wherein an igniter is further disposed above the electronic balance.
10. The comprehensive experiment platform for testing powder pyrolysis and combustion characteristics and fire spread characteristics thereof as claimed in claim 1, wherein the electronic balance is a high-precision electronic balance, the measurement range of the electronic balance is 10mg-3200g, the measurement precision is 0.1mg, and the electronic balance is electrically connected with the monitoring terminal through a high-temperature resistant wire wrapped with a heat insulating material.
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| CN113447526A (en) * | 2021-06-29 | 2021-09-28 | 北京石油化工学院 | Device and method for testing ignition spreading characteristic of dust layer in pipeline |
| CN114414625A (en) * | 2022-01-25 | 2022-04-29 | 东北大学 | Testing device and method for evaluating influence of moisture content on dust bed fire |
| CN114858962A (en) * | 2022-04-27 | 2022-08-05 | 中国地质大学（武汉） | Device for testing fire resistance of fireproof plugging material and using method thereof |
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