A material ignition effect online testing system and method

Abstract

The present application relates to a kind of material ignition effect online test system and method thereof, belong to material ignition effect research and application technical field, solve the technical problems of low heat flow loading level and the insufficient online test ability of material pyrolysis and ignition characteristic in the process of material ignition effect research.Its test system includes heat flow loading subsystem, effect online test subsystem, combustion chamber.Heat flow loading subsystem is used to apply heat flow irradiation to the material to be tested, effect online test subsystem is used to collect the ignition effect parameters of the material to be tested, and the combustion chamber provides irradiation space for the material to be tested.The test method includes test system self-checking, preparation of the material to be tested, the material to be tested is placed in the combustion chamber, test system setting, heat flow loading system setting, material ignition effect data acquisition and analysis steps.The present application is used for the online test of material ignition effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of material ignition effect research and application, and particularly relates to a material ignition effect online testing system and method. BACKGROUND

[0002] In the fire science research, the apparent pyrolysis kinetics and ignition characteristics of materials are very important branches of disciplines. The existing experimental research equipment has a low level of heat radiation capacity, such as commonly used cone calorimeter and other instruments, the heat radiation intensity of which is generally 10 W / cm 2 , and the maximum heat radiation load of the laboratory level cone calorimeter can only reach the order of tens of watts per square centimeter. The apparent pyrolysis kinetics and ignition characteristics of materials under strong heat radiation are different from those under low heat radiation, and the pyrolysis products, heat release, ignition characteristics, etc. are also different, and the root cause is that the ignition effect mechanism of materials under different heat radiation loading conditions is different. If the apparent pyrolysis kinetics and ignition characteristics of materials under strong heat radiation load are to be studied, there is a certain gap in the heat radiation level of the existing experimental equipment, and the existing research systems at home and abroad also have certain deficiencies in the online testing capability of the pyrolysis products and ignition characteristics of materials under strong heat radiation loading conditions. SUMMARY

[0003] In order to overcome the problems of low heat radiation capacity and insufficient online testing capability of effect parameters in the material ignition effect test, the present application provides a material ignition effect online testing system and method.

[0004] The technical solution adopted by the present application to solve its technical problems is:

[0005] A material ignition effect online testing system, comprising a heat flow loading subsystem, an effect online testing subsystem, and a combustion chamber.

[0006] The heat flow loading subsystem comprises a high heat flow loading device and a low heat flow loading device. The high heat flow loading device is located outside the combustion chamber, and the low heat flow loading device is located inside the combustion chamber.

[0007] The high heat flow loading device is used to provide a high heat flow laser irradiation light source and implement high heat flow laser irradiation on the material to be tested. It comprises a high-power laser and an imaging system. The high-power laser is used to provide high heat flow loading. The imaging system is used to adjust the collimation and magnification of the laser output spot, and is matched with the high-power laser to realize continuous adjustment of the size of the irradiation area on the surface of the material to be tested.

[0008] The low heat flow loading device is a conical heater, which is used to provide a low heat flow broadband light irradiation light source and implement low heat flow broadband light irradiation on the material to be tested.

[0009] The effect online test subsystem is used for collecting ignition effect parameters of the material to be tested. The infrared thermal imager, the gas analyzer, the weighing sensor, the high-speed camera and the data collector are included.

[0010] The infrared thermal imager, the gas analyzer, the high-speed camera and the data collector are located outside the combustion chamber, and the weighing sensor is located inside the combustion chamber. The infrared thermal imager is used for measuring the surface temperature of the material to be tested in real time during irradiation. The gas analyzer is used for testing and analyzing the pyrolysis gas components and concentration of the material to be tested in real time during irradiation. The weighing sensor is used for monitoring the mass loss of the material to be tested in real time during irradiation. The high-speed camera is used for recording the ignition effect process and phenomenon of the material to be tested under heat flow irradiation. The data collector is used for storing and outputting the data measured by the gas analyzer and the weighing sensor in real time.

[0011] The combustion chamber is used for providing an irradiation space for the material to be tested, and includes a hatch, a window sheet, a combustion table, an exhaust pipe and a sample box.

[0012] The hatch is used as a taking and placing channel for the material to be tested. The window sheet is installed on the hatch and is used for observing the surface temperature of the material to be tested by the infrared thermal imager and transmitting laser. The combustion table is used for placing the material to be tested and is located on the upper side of the weighing sensor and on the lower side of the heating cone. The material to be tested can be placed in a required state. The exhaust pipe is used for discharging the smoke generated by pyrolysis during irradiation. The sample box is used for wrapping the material to be tested, and the surface of the material to be tested to be tested needs to be irradiated and tested is directed to the opening of the sample box, and the material to be tested is placed in the sample box.

[0013] The wavelength of the high-power laser in the above-mentioned material ignition effect online test system is 1 μm, and the output power of the laser is 9 kW.

[0014] The size of the light spot of the irradiation area of the imaging system is adjusted to be 3 cm×3 cm-10 cm×10 cm.

[0015] The distance between the conical heater and the surface of the material to be tested in the above-mentioned material ignition effect online test system is 25 cm, the irradiation intensity range is 0 W / cm 2 -10 W / cm 2 , and the irradiation size adjustment range is 1 cm×1 cm-10 cm×10 cm.

[0016] The gas analyzer in the above-mentioned material ignition effect online test system is located at a sampling pipe connected to the exhaust pipe, the measured gas types are oxygen, carbon monoxide and carbon dioxide, the oxygen and carbon monoxide concentration measurement accuracy is 0.01%, and the carbon dioxide concentration measurement accuracy is 0.1%.

[0017] The weighing sensor has a measurement range of 0kg-5kg and a measurement accuracy of 0.01g.

[0018] The high-speed camera has a sensor wave band of a visible light wave band and a frame frequency of 200fps.

[0019] The data collector has three card slots, 120 single-end measurement channels and data parameter interfaces of Ethernet and USB.

[0020] The cabin door main frame is made of stainless steel and sprayed with black anti-rust paint, and the cabin door has a size of 600mm*600mm.

[0021] The window sheet is made of fused quartz glass and has a single-side 1μm anti-reflection film on the outside, a transmittance of 99% for 1μm laser and a φ60mm opening for mounting a germanium window sheet.

[0022] The combustion table is a steel plane for placing the wrapped test material, which can be placed vertically, horizontally or at any angle.

[0023] The test sample box is a steel box with an open side, a size of 10cm*10cm*5cm and used for placing the test material.

[0024] A material ignition effect online testing method comprises the following steps:

[0025] Step one, self-checking of the online testing system

[0026] The online testing system is self-checked to confirm that it is in a normal working state.

[0027] Step two, preparation of the test material

[0028] First, the test material is wrapped with aluminum foil, with the heating surface exposed and closely attached to the open side of the test sample box.

[0029] Second, the wrapped test material is taken out, and the weight of the test sample box and the aluminum foil of the wrapped test material is measured and recorded by using the weighing sensor.

[0030] Third, the test material is re-wrapped with aluminum foil, with the heating surface exposed and placed on the combustion table, and the weight of the test material is measured and recorded by using the weighing sensor.

[0031] Step three, the material to be tested is placed in the combustion chamber:

[0032] The combustion chamber door is opened, and the test piece box containing the material to be tested is placed on the combustion table according to the test requirements.

[0033] The door is closed.

[0034] Step four, test system setting

[0035] The field of view of the infrared thermal imager and the high-speed camera is adjusted to observe the overall appearance of the heated surface of the material to be tested. The temperature measurement range and frame rate of the infrared thermal imager are set, and the exposure time and frame rate of the high-speed camera are set.

[0036] The gas analyzer is turned on, and the self-checking, zero-point calibration, and standard-point calibration of the gas analyzer are performed. The data collector is turned on.

[0037] Step five, heat flow loading system setting

[0038] When the irradiation intensity is 10 W / cm 2 or below, the high heat flow loading device is used for loading. The high heat flow loading device is turned on, the irradiation intensity required by the high-power laser is set, and the spot size of the imaging system on the surface of the material to be tested is adjusted.

[0039] When the irradiation intensity is 10 W / cm 2 or below, the low heat flow loading device is used for loading. The low heat flow loading device is turned on, and the irradiation intensity of the material to be tested is input.

[0040] Step six, material ignition effect data collection and analysis

[0041] The data collector is turned on, the heat flow loading subsystem is loaded, and the material to be tested is irradiated to collect material ignition effect data.

[0042] After the material ignition effect data collection is completed, the heat flow loading subsystem and the data collector are turned off.

[0043] The data collected by the data collector and the test data are analyzed to obtain material ignition effect parameters.

[0044] In the above-mentioned material ignition effect online test method, when the irradiation intensity is 10 W / cm 2 or below, the high heat flow loading device can also be used for loading instead of the low heat flow loading device.

[0045] The beneficial effects of the present application are:

[0046] A material ignition effect online test system has a wide range (0-1000 W / cm 2The irradiation intensity of the high heat flow loading device can be adjusted, and the size of the high heat flow loading thermal radiation area can be continuously adjusted, so that the size of the irradiation sample and the irradiation intensity are provided with a larger selection space, and the application capability of the system is expanded.

[0047] The material ignition effect online testing system has the ignition effect online testing capability, and can realize online measurement of material pyrolysis characteristics and ignition effect phenomena, such as irradiation temperature rise, gas component and concentration measurement, material quality change, ignition time and the like.

[0048] The material ignition effect online testing system has high integration degree and high modularization level, and each part has clear function positioning and is easy to integrate and expand.

[0049] The material ignition effect online testing method can realize 0-1000W / cm 2 The thermal radiation loading can meet the needs of carrying out material pyrolysis apparent kinetics and ignition characteristics research under low heat flow and high heat flow conditions. The online testing method has the online testing capability of the ignition effect, can realize real-time collection and output of processes such as irradiation surface temperature of the material, pyrolysis gas rate and concentration, mass loss, ignition time and ignition phenomenon under different thermal radiation conditions, and the placement position of the tested material can be freely adjusted according to research needs. The modularization degree and integration degree are high, the function is easy to expand, and the system can provide good research system support for research on material pyrolysis apparent kinetics and ignition characteristics under high and low heat flow loading. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 is a component schematic diagram of the material ignition effect online testing system of the embodiment of the present application;

[0051] Figure 2 is a structure schematic diagram of the material ignition effect online testing system of the embodiment of the present application.

[0052] Reference signs: 12. high-power laser, 13. imaging system, 21. conical heater, 31. infrared thermal imager, 32. gas analyzer, 33. weighing sensor, 34. high-speed camera, 35. data collector, 41. hatch, 42. window sheet, 43. combustion table, 44. smoke exhaust pipe, 45. test piece box. DETAILED DESCRIPTION

[0053] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0054] Embodiment one

[0055] The material ignition effect online testing system comprises a high heat flow loading device, a low heat flow loading device, an effect online testing subsystem and a combustion chamber, like Figure 1As shown.

[0056] The high heat flux loading device is composed of a high-power laser and an imaging system, which provides a high heat flux uniform laser irradiation light source for the system.

[0057] The low heat flux loading device is composed of a conical heater, which provides a low heat flux uniform wide-spectrum light irradiation light source.

[0058] The online test system of the ignition effect is composed of an infrared thermal imager, a gas analyzer, a weighing sensor, a high-speed camera, a data acquisition device, etc., which realizes online testing of the ignition effect of materials.

[0059] The combustion chamber is composed of a hatch, a window piece, a combustion table, an exhaust pipe, and a test piece box, which provides an irradiation experiment area for materials.

[0060] An online test system of the ignition effect of materials, as shown. Figure 2 The working principle is as follows:

[0061] The high heat flux loading device is composed of a high-power laser and an imaging system. The high-power laser mainly provides high heat flux loading conditions for the system, and the wavelength of the laser can be selected according to actual needs, and 1 μm is recommended, but not limited to the above wavelength. The recommended output power of the laser is 9 kW, but not limited to the above power. The imaging system mainly realizes the collimation and magnification adjustment of the laser output spot, and must be used with the laser. The imaging system can realize continuous adjustment of the size of the irradiation area on the surface of the irradiated sample, and the recommended size of the spot adjustment of the irradiation area is 3 cm x 3 cm-10 cm x 10 cm, but not limited to the above size.

[0062] The low heat flux loading device is composed of a conical heater. The conical heater can provide a certain intensity of wide-spectrum uniform heat radiation on the surface of the irradiated sample 25 cm away from the heating cone after being powered on. The recommended irradiation intensity range is 0-10 W / cm 2 , but not limited to the above irradiation intensity, and the irradiation size can be adjusted according to the test sample and test requirements, and the recommended adjustment range is 1 cm x 1 cm-10 cm x 10 cm, but not limited to the above size.

[0063] The effect online test subsystem is composed of an infrared thermal imager, a gas analyzer, a weighing sensor, a high-speed camera, a data acquisition device, etc. The infrared thermal imager is used for measuring the surface temperature of the irradiated sample, obtaining the real-time temperature of the material surface during irradiation, and the temperature measurement range of the thermal imager is recommended to be 0-3000℃, but is not limited to the above range. The gas analyzer is used for online real-time test analysis of the pyrolysis gas composition and concentration during material irradiation. The sampling tube is connected to the exhaust pipe, and the real-time sampling of the gas is used to realize the real-time measurement of the smoke gas and concentration. The recommended measured gas types are oxygen (O2), carbon monoxide (CO), and carbon dioxide (CO2), but are not limited to the above gas types. The measurement accuracy of oxygen and carbon monoxide concentration is 0.01%, and the measurement accuracy of carbon dioxide concentration is 0.001%, but is not limited to the above gas measurement types and measurement accuracy. The weighing sensor is placed below the material to be tested, and the mass loss of the material is obtained in real time during irradiation. The recommended measurement range of the weighing sensor is 0-5kg, and the measurement accuracy is 0.01g, but is not limited to the above range and accuracy. The high-speed camera is used to record the ignition effect process and phenomenon of the material under different intensity heat flow irradiation. The sensor waveband of the high-speed camera is recommended to be the visible light waveband, but is not limited to the above waveband. The frame frequency of the high-speed camera is recommended to be 200fps, but is not limited to the above frame frequency. The data acquisition device is used for storing and outputting the real-time measurement data of the gas analyzer, weighing sensor, etc. The recommended number of data acquisition card slots is 3, but is not limited to the above number. The recommended number of single-end measurement channels of the data acquisition device is 120, but is not limited to the above number. The recommended data parameter interface of the data acquisition is an Ethernet interface and a USB interface, but is not limited to the above interface form.

[0064] The combustion chamber consists of a door, windows, a combustion table, an exhaust duct, and a specimen box. The main door frame is made of stainless steel and painted black with anti-rust paint. The recommended door dimensions are 600mm x 600mm, but are not limited to these dimensions. The door can be tilted to one side and opened. A window is installed within the door frame. The recommended material for the window is fused quartz glass. A 1μm antireflection coating is applied to the outer surface of the window. This coating achieves a 99% transmittance for 1μm laser light, but is not limited to the above coating methods and transmittance. A 60mm diameter area is reserved for mounting a germanium window to enable a thermal imager to observe the surface temperature of the irradiated sample. The window material and dimensions are recommended, but are not limited to the above materials and dimensions. The combustion table is a steel metal surface placed above the load cell and is used to hold the specimen box containing the test material. The placement of the test specimen box containing the test material can be adjusted freely based on the heating method and research needs. It can be placed vertically, horizontally, or at any angle on the combustion table, ensuring that the test material and the opening of the test box are in close contact with the external surface and facing the heat flow. This optional placement angle greatly expands the research scope of this system. The material and dimensions of the combustion table are recommended but not limited to the above materials and dimensions. The exhaust duct is used to discharge the pyrolysis products during the material irradiation process out of the combustion chamber.

[0065] Example 2

[0066] A material ignition effect online testing method, the specific implementation method is:

[0067] A material ignition effect online testing system includes a high heat flux loading device, a low heat flux loading device, an effect online testing subsystem, and a combustion chamber. Figure 1 shown.

[0068] Step 1: Open the online test system to perform a self-test to confirm whether the status is normal.

[0069] Step 2: First prepare the test piece. Wrap the material to be tested with aluminum foil so that only the heating surface is exposed. At the same time, make sure that the heating surface of the test piece is in complete contact with the opening side surface of the test box.

[0070] Secondly, after taking out the wrapped specimen, the empty steel metal specimen box and the aluminum foil wrapping the test material specimen are placed on the combustion table and the weight is measured and recorded by the weighing sensor.

[0071] The test material is then completely re-wrapped as in the first step, leaving only the heated surface exposed, and placed back into the steel metal specimen box. The box is then placed on the combustion table and weighed by a load cell, recording the weight of the wrapped test material sample box.

[0072] Step three: first open the combustion chamber door, and then place the test specimen box containing the material to be tested on the combustion platform. The position of the irradiated sample can be adjusted freely according to the heating mode and research requirements. The sample can be placed vertically, horizontally, or at any angle on the combustion platform.

[0073] Secondly, after the sample is placed according to the experimental requirements, the door is closed.

[0074] Step four: effect online test subsystem settings

[0075] Firstly, adjust the field of view of the thermal imager and high-speed camera so that the entire surface of the sample being heated can be observed. The thermal imager should be placed at the φ60mm germanium window installed in the combustion chamber window. Set the temperature measurement range and frame rate of the thermal imager, and set the exposure time and frame rate of the high-speed camera, etc.

[0076] Secondly, turn on the gas analyzer and perform self-checking and calibration on the gas analyzer. The calibration includes zero point calibration and standard point calibration. After completing the calibration, turn on the data collector and check that it is in normal state.

[0077] Step five: determine the required loading heat flow level and loading spot size.

[0078] Firstly, if a heat flux of 10W / cm 2 The above irradiation intensity can be loaded using a high heat flux loading device. If a heat flux of 10W / cm 2 and below is required, both a high heat flux loading device and a low heat flux loading device can be used, and the selection can be made flexibly according to the use requirements.

[0079] Secondly, if a high heat flux loading device is used, turn on the high-power laser and set the required irradiation intensity at the laser control end. Adjust the imaging system manually to form the required spot size on the sample surface, and then perform light irradiation as required.

[0080] If a low heat flux loading device is used, turn on the low heat flux loading device and input the target irradiation intensity at the control end. When the conical heater reaches the preset heat flux, the irradiation experiment can be carried out.

[0081] Step six: carry out the ignition effect experiment

[0082] After setting the irradiation parameters and confirming that the effect parameter online test system is normal, the ignition effect experiment can be carried out. Start the data collector before the experiment to collect experimental data. After the experiment is completed, turn off the heat flux loading device, end the data collection program, and analyze the data.

[0083] Example three

[0084] An online testing system for material ignition effect, which is composed of a high heat flow loading device, a low heat flow loading device, an effect online testing subsystem and a combustion chamber.

[0085] The high heat flow loading device is composed of a high-power laser and an imaging system. 2 The irradiation intensity is the recommended intensity, and is not limited to this intensity level.

[0086] The low heat flow loading device provides a maximum 10cm*10cm uniform irradiation spot and an irradiation intensity of (0-10W / cm 2 ) (the irradiation intensity and size are recommended, but are not limited to the above intensity and size). The effect online testing subsystem is composed of a thermal imager, a gas analyzer, a weighing sensor, a high-speed camera and a data collector, and realizes the functions of real-time temperature measurement of the material during heating, gas component and concentration measurement, material mass change measurement and ignition effect phenomenon process recording, etc.

[0087] The combustion chamber is composed of a hatch, a window sheet, a combustion table, an exhaust pipe and a test piece box.

[0088] The ignition phenomena of the material under the action of high and low heat flow are obviously different, which is ultimately due to the difference in ignition mechanism. The online testing system for material ignition effect can simultaneously have two different heating conditions of high and low heat flow, greatly expands the irradiation intensity loading capacity of the conventional ignition effect research equipment in the laboratory, simultaneously has the online measurement of the material ignition effect, can obtain the key effect parameters such as the gas concentration of CO, CO2, the temperature rise history of the material, the heat release rate and the ignition time in real time, and provides an important experimental system basis for the ignition effect mechanism research of the material under the action of high and low heat flow.

Claims

1. A material ignition effect online testing system, characterized in that: Including heat flux loading subsystem, effect online testing subsystem, combustion chamber; The heat flux loading subsystem includes a high heat flux loading device and a low heat flux loading device; the high heat flux loading device is located outside the combustion chamber, and the low heat flux loading device is located inside the combustion chamber; the high heat flux loading device is used to provide a high heat flux laser irradiation light source, and implement high heat flux laser irradiation on the material to be tested, and includes a high power laser (12) and an imaging system (13), wherein the high power laser (12) is used to provide high heat flux loading; the imaging system (13) is used to adjust the collimation and magnification of the laser output spot, and is matched with the high power laser (12) to achieve continuous adjustment of the size of the irradiation area on the surface of the material to be tested; the low heat flux loading device is a conical heater (21), which is used to provide a low heat flux broad spectrum light irradiation light source, and implement low heat flux broad spectrum light irradiation on the material to be tested; The effect online test subsystem is used to collect ignition effect parameters of the material to be tested, and includes an infrared thermal imager (31), a gas analyzer (32), a weighing sensor (33), a high-speed camera (34) and a data collector (35); the infrared thermal imager (31), the gas analyzer (32), the high-speed camera (34) and the data collector (35) are located outside the combustion chamber, and the weighing sensor (33) is located inside the combustion chamber; The infrared thermal imager (31) is used to measure the surface temperature of the material to be tested in real time during the irradiation process; the gas analyzer (32) is used to test and analyze the components and concentrations of the pyrolysis gas produced by the material to be tested in real time during the irradiation process; the weighing sensor (33) is used to monitor the mass loss of the material to be tested in real time during the irradiation process; and the high-speed camera (34) is used to record the ignition effect process and ignition effect phenomenon of the material to be tested under the heat flux irradiation. The data collector (35) is used to store and output the data measured in real time by the gas analyzer (32) and the weighing sensor (33); The combustion chamber is used to provide an irradiation space for the material to be tested, and comprises a door (41), a window sheet (42), a combustion table (43), a smoke exhaust pipe (44), and a specimen box (45); the door (41) is used as a passage for taking in and putting out the material to be tested; The window piece (42) is installed on the cabin door (41) and is used for the infrared thermal imager (31) to observe the surface temperature of the test material and the laser to pass through; the combustion table (43) is used to place the wrapped test material, which is located on the upper side of the weighing sensor (33) and the lower side of the heating cone. The placement of the test material can be adjusted according to demand; the exhaust pipe (44) is used to discharge the smoke generated by pyrolysis during the irradiation process; The test box (45) is used to wrap the material to be tested. The material to be tested is placed in the test box with the surface to be irradiated facing the opening of the test box.

2. The material ignition effect online testing system according to claim 1 is characterized in that: The high-power laser (12) has a wavelength of 1 μm and a laser output power of 9 kW; The light spot size of the irradiation area of ​​the imaging system (13) is adjusted to 3cm×3cm to 10cm×10cm.

3. The material ignition effect online testing system according to claim 1 is characterized in that: The conical heater (21) is 25 cm away from the surface of the material to be tested, and the irradiation intensity range is 0 W / cm 2 ~10W / cm 2 The irradiation size adjustment range is 1cm×1cm~10cm×10cm.

4. The material ignition effect online testing system according to claim 1 is characterized in that: The gas analyzer (32) is located at a sampling tube connected to the smoke exhaust pipe (44), and measures the types of gases such as oxygen, carbon monoxide, and carbon dioxide. The measurement accuracy of oxygen and carbon monoxide concentrations is 0.01%, and the measurement accuracy of carbon dioxide concentration is 0.1%.

5. The material ignition effect online testing system according to claim 1 is characterized in that: The weighing sensor (33) has a measuring range of 0kg to 5kg and a measuring accuracy of 0.01g.

6. The material ignition effect online testing system according to claim 1 is characterized in that: The sensor band of the high-speed camera (34) is the visible light band, and the frame rate is 200fps.

7. The material ignition effect online testing system according to claim 1 is characterized in that: The data collector (35) has three acquisition card slots, 120 single-ended measurement channels, and data parameter interfaces for data acquisition are Ethernet and USB interfaces.

8. The material ignition effect online testing system according to claim 1 is characterized in that: The main frame of the hatch (41) is made of stainless steel and sprayed with black anti-rust paint, and the size of the hatch is 600mm×600mm; The window piece (42) is made of fused quartz glass, with a 1 μm antireflection film coated on one side of the outer side, and a transmittance of 99% for 1 μm laser. The window piece (42) is provided with a φ60 mm opening, and the opening is used to install a germanium window piece, which is made of germanium. The germanium window piece is used for observing the surface temperature of the material to be tested by the infrared thermal imager (31); The combustion table (43) is a steel metal plane for placing the wrapped material to be tested, which can be placed on the combustion table (43) vertically, horizontally or at any inclination angle; The test piece box (45) is a steel metal box with one side open, the size of the metal box is 10cm×10cm×5cm, and is used to place the material to be tested.

9. A material ignition effect online testing method, using any one of the material ignition effect online testing systems of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Online test system self-test: The material ignition effect online test system self-checks to confirm that it is in normal working condition; Step 2: Prepare the test materials: The material to be tested is wrapped in aluminum foil and placed in a specimen box, and then the weight is measured; Step 3: Place the material to be tested in the combustion chamber: Open the combustion chamber door (41), place the test piece box containing the material to be tested on the combustion table (43) according to the test requirements; close the door (41); Step 4: Test system settings: Adjust the field of view of the infrared thermal imager (31) and the high-speed camera (34) until the entire heated surface of the material to be tested is observed; set the temperature measurement range and acquisition frame rate of the infrared thermal imager (31), and set the exposure time and acquisition frame rate of the high-speed camera (34); Turn on the gas analyzer (32), perform self-test, zero point calibration, and standard point calibration on the gas analyzer (32), and turn on the data collector (35); Step 5: Heat flow loading system settings: When the irradiation intensity is 10W / cm 2 When the above conditions are met, a high heat flux loading device is used for loading; the high heat flux loading device is turned on, the irradiation intensity required to be loaded by the high power laser (12) is set, and the spot size of the imaging system (13) on the surface of the material to be tested is adjusted; When the irradiation intensity is 10W / cm 2 When the irradiation intensity is less than 1000 nm, use the low heat flux loading device to load the material; turn on the low heat flux loading device and input the irradiation intensity of the material to be tested; Step 6: Material ignition effect data collection and analysis: Turning on the data collector (35), loading the heat flow loading device, irradiating the material to be tested, and collecting the material ignition effect data; After the material ignition effect data collection is completed, the heat flow loading device and the data collector (35) are turned off; The data collected by the data collector (35) and the test data are analyzed to obtain the material ignition effect parameters.

10. The online testing method for material ignition effect according to claim 9, characterized in that: The step 2 further comprises: First, the material to be tested is wrapped with aluminum foil, with the heating surface exposed, and the heating surface is in close contact with the surface of the test box (45); secondly, the wrapped material to be tested is taken out, and a weighing sensor (33) is used to measure and record the weight of the test box (45) and the aluminum foil wrapping the test piece; Once again, the material to be tested is wrapped with aluminum foil to expose the heating surface. The wrapped material to be tested is placed in a test piece box (45) and then placed on a combustion table (43). The weighing sensor (33) is used to measure and record the weight. The weight of the material to be tested; In the step 5, when the irradiation intensity is 10W / cm 2 When the temperature is below 0.5°C, a high heat flux loading system can also be used. Alternative loading device for low heat flux loading.

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