System and method for testing combustion performance of flooring material

Abstract

The invention provides a flooring material combustion performance test system and method, and the system comprises a box body which is used for placing a flooring material to be tested; the control device is used for generating a test control signal; the preheating device is connected with the box body and the control device, and is started according to the test control signal to perform thermal radiation heating on the flooring material to be tested; and the monitoring device is arranged on the box body, is connected with the control device and is used for acquiring monitoring data in the testing process. The control device and the preheating device are arranged, starting of the preheating device is controlled through the control device, the repeated operation steps of testers are simplified, the working environment of the testers is improved, the monitoring device is further arranged to obtain monitoring data in real time, and the accuracy and traceability of the testing result of the combustion performance of the flooring material are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of material combustion performance testing, and in particular to a system and method for testing the combustion performance of paving materials. Background Art

[0002] When flooring materials come into direct contact with a ground fire source, their combustion velocity and heat release rate directly impact the efficiency of fire spread. Therefore, testing the combustion performance of flooring materials is the first line of defense in fire prevention and control. However, existing techniques for testing the combustion performance of flooring materials require extensive manual operation and debugging by testers, resulting in low test efficiency and a high risk of safety incidents, especially for novice testers. Furthermore, test results are typically obtained through visual observation, which is highly subjective and can lead to significant errors in test results between different testers. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, the present invention aims to provide a system and method for testing the combustion performance of paving materials, which can improve the degree of automation of the combustion performance test of paving materials.

[0004] To achieve the above object, the present invention adopts the following technical solutions: The present invention provides a paving material combustion performance testing system, comprising: A box, used to place the paving materials to be tested; A control device for generating a test control signal; a preheating device connected to the box and the control device, and configured to be turned on according to the test control signal to perform thermal radiation heating on the flooring material to be tested; The monitoring device is arranged on the box and connected to the control device, and is used to obtain monitoring data during the test process.

[0005] As a further improvement of the present invention, the preheating device includes: An exhaust fan, arranged on the top of the box, for exhausting smoke in the box during the test; A radiation panel is placed in the box and is used to heat the flooring material to be tested by thermal radiation; Gas stations, used to provide gas; Air compressor, used to provide air; a switch unit, connected to the gas station and the air compressor, and turned on or off according to the test control signal; a gas flow control device connected to the switch unit, for adjusting the gas flow of the gas station and the air flow of the air compressor according to the test control signal; An ignition unit is provided in the box body and is connected to the gas flow control device, and is used for igniting the gas and the paving material to be tested.

[0006] As a further improvement of the present invention, the switch unit includes: a first solenoid valve, connected to the gas station and the gas flow control device, and opened or closed according to the test control signal; a second solenoid valve, connected to the air compressor and the gas flow control device, and opened or closed according to the test control signal; a third solenoid valve, connected to the gas station and the gas flow control device, and opened or closed according to the test control signal; a fourth solenoid valve, connected to the air compressor and the gas flow control device, and opened or closed according to the test control signal; The gas flow control device comprises: a first gas flow controller, connected to the ignition unit and the first solenoid valve, and configured to adjust the gas flow rate according to the test control signal; a second gas flow controller, connected to the ignition unit and the second solenoid valve, and configured to adjust the gas flow rate according to the test control signal; a third gas flow controller, connected to the ignition unit and the third solenoid valve, and configured to adjust the gas flow rate according to the test control signal; A fourth gas flow controller is connected to the ignition unit and the fourth solenoid valve, and is used to adjust the gas flow according to the test control signal.

[0007] As a further improvement of the present invention, the ignition unit includes: a first electric spark igniter, disposed in the box and close to the radiation plate, the first electric spark igniter being connected to the first gas flow controller and the second gas flow controller; a second electric spark igniter, disposed in the box and close to the paving material to be tested, the second electric spark igniter being connected to the third gas flow controller and the fourth gas flow controller; The sample igniter is arranged in the box and close to the second electric spark igniter and the paving material to be tested.

[0008] As a further improvement of the present invention, the monitoring device includes: A duct wind speed sensor is provided near the exhaust fan and is used to obtain wind speed information; A temperature sensor is provided in the box and is used to obtain temperature information in the box; A flow sensor is provided at the air inlet of the preheating device and connected to the gas flow control device, and is used to obtain gas flow information; a data collector connected to the pipeline wind speed sensor, the temperature sensor, the flow sensor, and the control device, for collecting the wind speed information, the temperature information, and the gas flow information, and sending the information to the control device; A camera is disposed in the box and connected to the control device, and is used to shoot flame videos during the test and send them to the control device; An infrared thermal imager, disposed in the box and connected to the control device, for acquiring infrared thermal imaging images of the paving material to be tested and sending the images to the control device; A radiation pyrometer is arranged in the box and is used to obtain temperature information for testing the preheating device and send the temperature information to the control device.

[0009] The present invention also provides a method for testing the combustion performance of paving materials, which is applied to the above-mentioned paving material combustion performance testing system, comprising the steps of: S1. Turn on the preheating device to preheat the box; S2. Turn on the monitoring device and send the monitoring data to the control device during the preheating process. The control device adjusts the preheating device according to the monitoring data. S3. Place the flooring material to be tested in the test combustion position for testing, and start the preheating device. During the test, the control device adjusts the preheating device according to the monitoring data. The monitoring device sends the monitoring data to the control device, and the control device obtains the test results based on the monitoring data. S4, repeat step S3 to perform the next test; S5. After the test is completed, turn off the preheating device and monitoring device.

[0010] As a further improvement of the present invention, the step of starting the preheating device to preheat the box includes: Turn on the exhaust fan; After the wind speed stabilizes, the first solenoid valve and the second solenoid valve are opened; adjusting the first gas flow controller and the second gas flow controller in sequence; Turning on a first spark igniter and keeping it on for a first set time, and after reaching a preheating condition, turning off the first spark igniter and starting preheating; When the temperature of the radiation panel and the temperature inside the box meet the conditions, preheating is completed.

[0011] As a further improvement of the present invention, the control device adjusts the preheating device according to the monitoring data, including: When it is determined that the exhaust fan is abnormal, the first solenoid valve and the second solenoid valve are closed; When the temperature of the radiation plate is lower than the first set temperature, the first spark igniter is controlled to remain on until the temperature inside the box or the temperature of the radiation plate reaches the first set temperature, and then the first spark igniter is turned off; When abnormal gas flow and air flow are detected, an alarm is issued; When it is determined that the gas pipeline is leaking, an alarm is issued.

[0012] As a further improvement of the present invention, the step of starting the preheating device and, during the test, the control device adjusting the preheating device according to the monitoring data, the monitoring device sending the monitoring data to the control device, and the control device obtaining the test result based on the monitoring data, includes: Open the third solenoid valve and the fourth solenoid valve; The gas flow rate is adjusted by the third gas flow controller, and the air flow rate is adjusted by the fourth gas flow controller; After the paving material to be tested is placed and a second set time has passed, the second electric spark igniter is turned on to ignite the paving material to be tested; When the temperature inside the box is higher than the second set temperature, the wind speed of the exhaust fan is increased, and the flow of the gas station and the air compressor is reduced through the first gas flow controller and the second gas flow controller; When abnormal gas flow and air flow are detected, an alarm is issued; When it is determined that the gas pipeline is leaking, an alarm is issued; Obtaining the flame spread distance and the time to reach the flame spread distance of the paving material to be tested, and the control device calculating the critical radiant flux of the paving material to be tested based on the flame spread distance and the time to reach the flame spread distance; When the fourth set time is reached, the third solenoid valve and the fourth solenoid valve are closed; When the flame spread distance exceeds the set distance or the test time reaches the third set time, the test is stopped.

[0013] As a further improvement of the present invention, the step of shutting down the preheating device and the monitoring device includes: Close the first solenoid valve, the second solenoid valve, the camera, and the infrared thermal imager in sequence; When the temperature inside the box is lower than the third set temperature, the exhaust fan, the third solenoid valve, the fourth solenoid valve, and the gas flow control device are turned off.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention is provided with a control device and a preheating device, and the opening of the preheating device is controlled by the control device, which simplifies the repeated operation steps of the test personnel, improves the working environment of the test personnel, and preheats faster; at the same time, a monitoring device is configured to obtain monitoring data in real time, thereby improving the accuracy and traceability of the test results of the combustion performance of the paving material, and improving the efficiency of the combustion performance detection of the paving material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0016] Figure 1 This is a schematic diagram of the structure of the paving material combustion performance testing system described in Example 1; Figure 2 This is another structural schematic diagram of the floor paving material combustion performance testing system described in Example 1; Figure 3 This is a flow chart of the method for testing the combustion performance of floor paving materials described in Example 2.

[0017] Explanation of the accompanying drawings: 1. Box; 2. Control device; 3. Preheating device; 31. Exhaust fan; 32. Radiation plate; 33. Gas station; 34. Air compressor; 35. Switch unit; 351. First solenoid valve; 352. Second solenoid valve; 353. Third solenoid valve; 354. Fourth solenoid valve; 36. Gas flow control device; 361. First gas flow controller; 362. Second gas flow controller; 363. Third gas flow controller; 364. Fourth gas flow controller; 37. Ignition unit; 371. First spark igniter; 372. Second spark igniter; 373. Sample igniter; 4. Monitoring device; 41. Pipe wind speed sensor; 42. Temperature sensor; 43. Flow sensor; 44. Data collector; 45. Camera; 46. Infrared thermal imager; 47. Radiation pyrometer; 5. Flue; 6. Exhaust hood; 100. Paving material to be tested. DETAILED DESCRIPTION

[0018] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly understood, the technical solutions of the embodiments of the present invention are described in further detail below. Obviously, the described embodiments are only a portion of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0019] Example 1 This embodiment provides a system for testing the combustion performance of paving materials. Figure 1 and Figure 2As shown, it includes: a box 1, a control device 2, a preheating device 3 and a monitoring device 4, wherein the box 1 is used to place the paving material 100 to be tested; the control device 2 is used to generate a test control signal; the preheating device 3 is connected to the box 1 and the control device 2, and is used to be turned on according to the test control signal to heat the paving material 100 to be tested by thermal radiation; the monitoring device 4 is set on the box 1 and connected to the control device 2, and is used to obtain monitoring data during the test process.

[0020] The preheating device 3 includes: an exhaust fan 31, a radiation panel 32, a gas station 33, an air compressor 34, a switch unit 35, a gas flow control device 36 and an ignition unit 37. The exhaust fan 31 is arranged at the top of the box 1, and is used to discharge the smoke in the box 1 during the test; the radiation panel 32 is placed in the box 1, and is used to perform thermal radiation heating on the paving material 100 to be tested; the gas station 33 is used to provide gas; the air compressor 34 is used to provide air; the switch unit 35 is connected to the gas station 33 and the air compressor 34, and is turned on or off according to the test control signal; the gas flow control device 36 is connected to the switch unit 35, and is used to adjust the gas flow of the gas station 33 and the air flow of the air compressor 34 according to the test control signal; the ignition unit 37 is arranged in the box 1, and is connected to the gas flow control device 36, and is used to ignite the gas and the paving material 100 to be tested.

[0021] The gas station 33, the air compressor 34, the switch unit 35, the gas flow control device 36 and the ignition unit 37 are all connected through pipelines.

[0022] In order to further improve the test environment, in this embodiment, the top of the box 1 is covered with a smoke exhaust hood 6, a flue 5 is led out of the box 1, and an exhaust fan 31 is installed above the flue 5, which can promptly remove the smoke in the box 1 and reduce the temperature inside the box 1.

[0023] The switch unit 35 includes: a first solenoid valve 351, a second solenoid valve 352, a third solenoid valve 353, and a fourth solenoid valve 354. The first solenoid valve 351 is connected to the gas station 33 and the gas flow control device 36, and is opened or closed according to a test control signal; the second solenoid valve 352 is connected to the air compressor 34 and the gas flow control device 36, and is opened or closed according to a test control signal; the third solenoid valve 353 is connected to the gas station 33 and the gas flow control device 36, and is opened or closed according to a test control signal; the fourth solenoid valve 354 is connected to the air compressor 34 and the gas flow control device 36, and is opened or closed according to a test control signal.

[0024] The gas flow control device 36 includes: a first gas flow controller 361, a second gas flow controller 362, a third gas flow controller 363, and a fourth gas flow controller 364. The first gas flow controller 361 is connected to the ignition unit 37 and the first solenoid valve 351, and is used to adjust the gas flow rate according to the test control signal; the second gas flow controller 362 is connected to the ignition unit 37 and the second solenoid valve 352, and is used to adjust the gas flow rate according to the test control signal; the third gas flow controller 363 is connected to the ignition unit 37 and the third solenoid valve 353, and is used to adjust the gas flow rate according to the test control signal; the fourth gas flow controller 364 is connected to the ignition unit 37 and the fourth solenoid valve 354, and is used to adjust the gas flow rate according to the test control signal.

[0025] The ignition unit 37 includes: a first spark igniter 371, a second spark igniter 372, and a sample igniter 373. The first spark igniter 371 is arranged in the box body 1 and is arranged close to the radiation plate 32. The first spark igniter 371 is connected to the first gas flow controller 361 and the second gas flow controller 362; the second spark igniter 372 is arranged in the box body 1 and is arranged close to the paving material to be tested 100. The second spark igniter 372 is connected to the third gas flow controller 363 and the fourth gas flow controller 364; the sample igniter 373 is arranged in the box body 1 and is arranged close to the second spark igniter 372 and the paving material to be tested 100.

[0026] Exemplarily, the radiation plate 32 is arranged near the upper part of the box body 1, and the paving material 100 to be tested is located below the radiation plate 32. The first spark igniter 371, the second spark igniter 372, and the sample igniter 373 are located on the same side of the box body 1. The first spark igniter 371 and the second spark igniter 372 are used to ignite the gas. The second spark igniter 372 ignites the sample igniter 373, and the sample igniter 373 ignites the paving material 100 to be tested. The gas flow control device 36 is arranged on the pipeline connecting the gas station 33, the air compressor 34 and the ignition unit 37.

[0027] The monitoring device 4 includes: a duct wind speed sensor 41, a temperature sensor 42, a flow sensor 43, a data collector 44, a camera 45, an infrared thermal imager 46, and a radiation pyrometer 47. The duct wind speed sensor 41 is arranged near the exhaust fan 31 to obtain wind speed information; the temperature sensor 42 is arranged in the box 1 to obtain temperature information in the box 1; the flow sensor 43 is arranged at the air inlet of the preheating device 3 and is connected to the gas flow control device 36 to obtain gas flow information; the data collector 44 is connected to the duct wind speed sensor 41, the temperature sensor 4 2. A flow sensor 43 is connected to the control device 2 and is used to collect wind speed information, temperature information, and gas flow information, and send it to the control device 2. A camera 45 is set in the box 1 and is connected to the control device 2. It is used to shoot flame videos during the test and send them to the control device 2. An infrared thermal imager 46 is set in the box 1 and is connected to the control device 2. It is used to obtain infrared thermal imaging images of the paving material 100 to be tested and send them to the control device 2. A radiation pyrometer 47 is set in the box 1 and is used to obtain temperature information of the test preheating device 3 and send it to the control device 2.

[0028] The pipeline wind speed sensor 41 is set in the flue 5, and the flow sensor 43 is set on the pipeline connecting the gas station 33, the air compressor 34 and the ignition unit 37. The control data of the flow sensor 43 and the gas flow control device 36 in the control device 2 are compared to check whether the pipeline is leaking.

[0029] During actual use, the preheating device 3 is activated by the control device 2, and based on the monitoring data obtained during the preheating process, dynamic preheating control is implemented, such as adjusting the gas and air flow rates within the box 1 and the exhaust air velocity within the box 1. Problems that arise during the preheating process, such as pipeline leaks, insufficient gas station pressure, and exhaustion of gas flow, can also be detected. During testing, test results are calculated based on the real-time monitoring data, allowing timely detection of problems that arise during the test, such as pipeline leaks, insufficient gas station pressure, and exhaustion of gas flow. Simultaneously, based on the monitoring data from the monitoring device 4, the control device 2 can implement safety linkage measures. For example, if the flooring material burns violently, the control device 2 will link the exhaust fan 31, the first gas flow controller 361, and the second gas flow controller 362 to increase the exhaust rate of the exhaust fan 31 and reduce the gas and air flow rates of the radiation panel 32 to prevent damage to the test equipment.

[0030] Example 2 This embodiment provides a method for testing the combustion performance of paving materials. Figure 3 As shown, the floor paving material combustion performance testing system applied to Example 1 includes the following steps: S0. Before the test begins, enter the information of the flooring material to be tested on the control device and select the most recent calibration data. The calibration data includes: the calibrated radiation flux-test position curve, the box temperature, and the radiation panel temperature. Press the start test button on the control device. S1. The control device calls the box preheating program, turns on the preheating device, and preheats the box. Specifically: S11. Turn on the exhaust fan and adjust the wind speed of the exhaust fan to stabilize at 2.5±0.2m / s. This stabilization process needs to be maintained for at least 1 minute.

[0031] S12: After the wind speed stabilizes, open the first solenoid valve and the second solenoid valve.

[0032] S13. Adjust the first gas flow controller and the second gas flow controller in sequence; adjust the gas flow to (15±2) L / min, and slowly increase the air flow from 50 L / min to (120±20) L / min within 5 minutes to prevent the gas from being blown out by excessive air flow.

[0033] S14. Turn on the first spark igniter and keep it on for a first set time. After the preheating condition is reached, turn off the first spark igniter and start preheating. The preheating condition is: when the measured temperature inside the box or the temperature of the radiation plate is significantly increased, that is, ≥10°C higher than the initial value.

[0034] S15. When the temperature of the radiation panel and the temperature inside the box meet the conditions, preheating is completed. That is, when the deviation between the temperature of the radiation panel and the calibrated temperature of the radiation panel is within ±5°C, and the deviation between the temperature of the box and the calibrated temperature is within ±10°C, preheating is completed.

[0035] S2. Turn on the monitoring device and send the monitoring data to the control device during the preheating process. The control device adjusts the preheating device according to the monitoring data.

[0036] S21. When it is determined that the exhaust fan is abnormal, the first solenoid valve and the second solenoid valve are closed. Specifically, it can be determined whether the exhaust fan is abnormal based on the wind speed information obtained by the pipeline wind speed sensor. When the wind speed decreases continuously (even to 0 m / s) or increases, it indicates that the exhaust fan has an abnormal fault. The control device automatically links the first solenoid valve and the second solenoid valve to shut down the gas station and the air compressor, and issues an alarm to remind the test personnel that the wind speed is abnormal.

[0037] S22. When the temperature of the radiation plate is lower than the first set temperature, the first spark igniter is controlled to be continuously turned on until the temperature inside the box or the temperature of the radiation plate reaches the first set temperature, and the first spark igniter is turned off; the temperature of the radiation plate can be obtained by a radiation pyrometer. When the temperature of the radiation plate drops significantly below the ambient temperature or continues to drop by more than 15°C during the preheating process, it means that the gas in the radiation plate is blown out. The control device will link the first spark igniter to be continuously turned on until the temperature inside the box or the temperature of the radiation plate rises significantly by more than 15°C, and then the first spark igniter is turned off again.

[0038] S23. When the gas flow and air flow are abnormal, an alarm is issued. The gas flow and air flow can be obtained through flow sensors. When the gas flow and air flow of the radiation plate are abnormal during the test, especially when the gas flow is exhausted or the gas station pressure is insufficient, the gas source is automatically replaced or an alarm is issued to prompt the test personnel to replace the gas.

[0039] S24. When it is determined that the gas pipeline is leaking, an alarm is issued. Specifically, based on the comparison of the opening of the gas flow control device 36 and the data measured by the flow sensor 43 at the air inlet of the radiation plate, when the data error exceeds 15%, it is determined that the gas pipeline is leaking, and the test personnel are reminded to check and maintain the gas pipeline.

[0040] S3. After preheating is completed, the paving material to be tested is placed in the test combustion position for testing. The camera and infrared thermal imager are turned on. The camera and infrared thermal imager automatically perform zero position calibration on the sample. The control device starts the timing for placing the paving material to be tested. During the test, the control device adjusts the preheating device according to the monitoring data. The monitoring device sends the monitoring data to the control device, and the control device obtains the test results based on the monitoring data.

[0041] S31, open the third solenoid valve and the fourth solenoid valve.

[0042] S32. Adjust the gas flow rate through the third gas flow controller to (1.56±0.12) L / min, and adjust the air flow rate through the fourth gas flow controller to (1.44±0.12) L / min.

[0043] S33. After 2 minutes have passed since the paving material to be tested was placed in the chamber, the second spark igniter is turned on to ignite the gas. The sample igniter 373 close to the second spark igniter 372 is ignited, and the sample igniter 373 further ignites the paving material to be tested. The control device automatically starts the test timing.

[0044] S34. When the temperature inside the box is higher than the second set temperature, the wind speed of the exhaust fan is increased, and the flow of the gas station and the air compressor is reduced through the first gas flow controller and the second gas flow controller. That is, when the temperature inside the box exceeds 200°C during the test, it means that the flooring material is burning violently. The control device will link the exhaust fan, the first gas flow controller, and the second gas flow controller to increase the exhaust rate of the exhaust fan and reduce the gas flow and air flow of the radiation panel to prevent damage to the test equipment.

[0045] S35. When the gas flow and air flow are abnormal, an alarm is issued. The gas flow and air flow can be obtained by flow sensors. When the gas flow and air flow of the radiation plate are abnormal during the test, especially when the gas flow is exhausted or the gas station pressure is insufficient, the gas source is automatically replaced or an alarm is issued to prompt the test personnel to replace the gas.

[0046] S36. When it is determined that the gas pipeline is leaking, an alarm is issued. Specifically, based on the comparison of the opening of the gas flow control device 36 and the data measured by the flow sensor 43 at the air inlet of the radiation plate, when the data error exceeds 15%, it is determined that the gas pipeline is leaking, and the test personnel are reminded to check and maintain the gas pipeline.

[0047] S37. Obtain the flame spread distance and the time to reach the flame spread distance of the paving material to be tested, and the control device calculates the critical radiation flux of the paving material to be tested according to the flame spread distance and the time to reach the flame spread distance.

[0048] S38. When the time reaches 10 minutes, the third solenoid valve and the fourth solenoid valve are closed, and the control device saves the test record data and test results.

[0049] S39: When the flame spread distance exceeds the set distance or the test time reaches the third set time, the test is stopped. When the flame spread distance exceeds 910mm or the test time reaches 30 minutes, the interruption condition is met and the test is automatically stopped.

[0050] S4. After completing a test, remove the tested flooring material and automatically adjust the first and second gas flow controllers based on the measured box temperature and radiation panel temperature so that the temperature of the preheating device in the box reaches the set value. After stabilization for 10 minutes, repeat step S3 to conduct the next test. S5. After the test is complete, turn off the preheating device and monitoring device. At this point, turn off the first solenoid valve, the second solenoid valve, the camera, and the infrared thermal imager in sequence. When the temperature inside the chamber drops below 100°C, turn off the exhaust fan, the third solenoid valve, the fourth solenoid valve, and the gas flow control device.

[0051] Based on the above embodiments, the system and method for testing the combustion performance of paving materials of the present invention have the following beneficial effects: The paving material combustion performance test system features a highly integrated intelligent data testing system and control system, and can realize intelligent preheating, including starting the exhaust fan first, then turning on the ignition, monitoring the obvious rise in box temperature and then extinguishing the solenoid valve, automatically monitoring and recording the flame spread distance, etc. The test process does not require personnel to be on duty and monitor the flame spread distance. The entire test process is completed automatically, and the results are calculated and judged. This not only greatly improves the detection efficiency and the accuracy of the test results, reduces the repeated operations of the test personnel and the impact of the test environment on their health, but also greatly reduces the possible dangers in the test process through intelligent linkage control of the test system.

[0052] In the description herein, reference to terms such as "one embodiment" or "example" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0053] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0054] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will readily conceive of other specific embodiments of the present invention without inventive effort, and such embodiments will fall within the scope of protection of the present invention.

Claims

1. A paving material combustion performance testing system, characterized in that: include: A box, used to place the paving materials to be tested; A control device for generating a test control signal; a preheating device connected to the box and the control device, and configured to be turned on according to the test control signal to perform thermal radiation heating on the flooring material to be tested; The monitoring device is arranged on the box and connected to the control device, and is used to obtain monitoring data during the test process.

2. The paving material combustion performance testing system according to claim 1, characterized in that: The preheating device comprises: An exhaust fan, arranged on the top of the box, for exhausting smoke in the box during the test; A radiation panel is placed in the box and is used to heat the flooring material to be tested by thermal radiation; Gas stations, used to provide gas; Air compressor, used to provide air; a switch unit, connected to the gas station and the air compressor, and turned on or off according to the test control signal; a gas flow control device connected to the switch unit, for adjusting the gas flow of the gas station and the air flow of the air compressor according to the test control signal; An ignition unit is provided in the box body and is connected to the gas flow control device, and is used for igniting the gas and the paving material to be tested.

3. The paving material combustion performance testing system according to claim 2, characterized in that: The switch unit includes: a first solenoid valve, connected to the gas station and the gas flow control device, and opened or closed according to the test control signal; a second solenoid valve, connected to the air compressor and the gas flow control device, and opened or closed according to the test control signal; a third solenoid valve, connected to the gas station and the gas flow control device, and opened or closed according to the test control signal; a fourth solenoid valve, connected to the air compressor and the gas flow control device, and opened or closed according to the test control signal; The gas flow control device comprises: a first gas flow controller, connected to the ignition unit and the first solenoid valve, and configured to adjust the gas flow rate according to the test control signal; a second gas flow controller, connected to the ignition unit and the second solenoid valve, and configured to adjust the gas flow rate according to the test control signal; a third gas flow controller, connected to the ignition unit and the third solenoid valve, and configured to adjust the gas flow rate according to the test control signal; A fourth gas flow controller is connected to the ignition unit and the fourth solenoid valve, and is used to adjust the gas flow according to the test control signal.

4. The paving material combustion performance testing system according to claim 3, characterized in that: The ignition unit comprises: a first electric spark igniter, disposed in the box and close to the radiation plate, the first electric spark igniter being connected to the first gas flow controller and the second gas flow controller; a second electric spark igniter, disposed in the box and close to the paving material to be tested, the second electric spark igniter being connected to the third gas flow controller and the fourth gas flow controller; The sample igniter is arranged in the box and close to the second electric spark igniter and the paving material to be tested.

5. The paving material combustion performance testing system according to claim 2, characterized in that: The monitoring device comprises: A duct wind speed sensor is provided near the exhaust fan and is used to obtain wind speed information; A temperature sensor is provided in the box and is used to obtain temperature information in the box; A flow sensor is provided at the air inlet of the preheating device and connected to the gas flow control device, and is used to obtain gas flow information; a data collector connected to the pipeline wind speed sensor, the temperature sensor, the flow sensor, and the control device, for collecting the wind speed information, the temperature information, and the gas flow information, and sending the information to the control device; A camera is disposed in the box and connected to the control device, and is used to shoot flame videos during the test and send them to the control device; An infrared thermal imager, disposed in the box and connected to the control device, for acquiring infrared thermal imaging images of the paving material to be tested and sending the images to the control device; A radiation pyrometer is arranged in the box and is used to obtain temperature information for testing the preheating device and send the temperature information to the control device.

6. A method for testing the combustion performance of paving materials, characterized in that: The paving material combustion performance testing system according to any one of claims 1 to 5 comprises the following steps: S1. Turn on the preheating device to preheat the box; S2. Turn on the monitoring device and send the monitoring data to the control device during the preheating process. The control device adjusts the preheating device according to the monitoring data. S3. Place the flooring material to be tested in the test combustion position for testing, and start the preheating device. During the test, the control device adjusts the preheating device according to the monitoring data. The monitoring device sends the monitoring data to the control device, and the control device obtains the test results based on the monitoring data. S4, repeat step S3 to perform the next test; S5. After the test is completed, turn off the preheating device and monitoring device.

7. The method for testing the combustion performance of floor covering materials according to claim 6, characterized in that: The step of starting the preheating device to preheat the box includes: Turn on the exhaust fan; After the wind speed stabilizes, the first solenoid valve and the second solenoid valve are opened; adjusting the first gas flow controller and the second gas flow controller in sequence; Turning on a first spark igniter and keeping it on for a first set time, and after reaching a preheating condition, turning off the first spark igniter and starting preheating; When the temperature of the radiation panel and the temperature inside the box meet the conditions, preheating is completed.

8. The method for testing the combustion performance of floor covering materials according to claim 6, characterized in that: The control device adjusts the preheating device according to the monitoring data, including: When it is determined that the exhaust fan is abnormal, the first solenoid valve and the second solenoid valve are closed; When the temperature of the radiation plate is lower than the first set temperature, the first spark igniter is controlled to remain on until the temperature inside the box or the temperature of the radiation plate reaches the first set temperature, and then the first spark igniter is turned off; When abnormal gas flow and air flow are detected, an alarm is issued; When it is determined that the gas pipeline is leaking, an alarm is issued.

9. The method for testing the combustion performance of floor covering materials according to claim 6, characterized in that: The step of turning on the preheating device, during the test, the control device adjusting the preheating device according to the monitoring data, the monitoring device sending the monitoring data to the control device, and the control device obtaining the test result based on the monitoring data, includes: Open the third solenoid valve and the fourth solenoid valve; The gas flow rate is adjusted by the third gas flow controller, and the air flow rate is adjusted by the fourth gas flow controller; After the paving material to be tested is placed and a second set time has passed, the second electric spark igniter is turned on to ignite the paving material to be tested; When the temperature inside the box is higher than the second set temperature, the wind speed of the exhaust fan is increased, and the flow of the gas station and the air compressor is reduced through the first gas flow controller and the second gas flow controller; When abnormal gas flow and air flow are detected, an alarm is issued; When it is determined that the gas pipeline is leaking, an alarm is issued; Obtaining the flame spread distance and the time to reach the flame spread distance of the paving material to be tested, and the control device calculating the critical radiant flux of the paving material to be tested based on the flame spread distance and the time to reach the flame spread distance; When the fourth set time is reached, the third solenoid valve and the fourth solenoid valve are closed; When the flame spread distance exceeds the set distance or the test time reaches the third set time, the test is stopped.

10. The method for testing the combustion performance of floor covering materials according to claim 6, characterized in that: The step of shutting down the preheating device and the monitoring device includes: Close the first solenoid valve, the second solenoid valve, the camera, and the infrared thermal imager in sequence; When the temperature inside the box is lower than the third set temperature, the exhaust fan, the third solenoid valve, the fourth solenoid valve, and the gas flow control device are turned off.

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