Flame retardant performance testing system and testing method for refractory materials

Abstract

The invention relates to the technical field of flame retardant performance testing, and specifically discloses a flame retardant performance testing system and a testing method for a refractory material. A data acquisition module collects surface temperatures of multiple target sites of a refractory material protection simulation object using multiple thermal sensors; a data testing module performs flame retardant tests on external refractory materials corresponding to different target sites of the protection simulation object using combustion flames of preset different levels of heat flow, and determines the thermal state coefficient of the current target site; a data analysis module inputs the thermal state coefficients corresponding to the current multiple target sites and preset different levels of heat flow data as initial data into a preset analysis model for training, updates and obtains a flame retardant grade evaluation model and outputs an evaluation grade of the flame retardant performance of the current refractory material; real-time analysis of the change state of the surface temperature of multiple target sites over a preset time period determines the safety state of the protection simulation object at the corresponding point, and adjusts the evaluation grade based on the judgment result feedback.

Description

Technical Field

[0001] The invention relates to the technical field of flame retardant performance testing, and in particular to a flame retardant performance testing system and a testing method for a refractory material. Background Art

[0002] The flame retardant performance test of refractory materials is an important means to evaluate their ability to resist combustion and flame spread under high temperature or fire source; and these test methods are crucial to ensure the safety of materials in practical applications, especially in the fields of construction, transportation, electronic equipment, etc. Some commonly used flame retardant performance test methods for refractory materials include: vertical burning test, horizontal burning test, oxygen index test, etc.

[0003] To judge whether a material meets specific fire safety requirements based on the flame retardant test results, it is first necessary to understand the different flame retardant test standards and corresponding classifications. The flame retardant performance test of existing refractory materials is based on the new standards, including the flame retardant grade standards, ground material fire test standards, non-combustibility test standards, etc., and the revision of the existing flame retardant performance test standards for refractory materials by the International Organization for Standardization and the European Committee for Standardization to adapt to new test requirements and improve the reliability of test results.

[0004] However, the existing methods only consider the flame retardancy of the surface of refractory materials, and do not fully consider the safety of the protection objects of the current refractory materials; and usually in the actual operation of refractory material protection, the distance between most burning flames and refractory materials cannot be controlled, and the burning points of the burning flames contacting the refractory materials are different, and the temperature of the corresponding parts of the protection objects is also different. Therefore, for some more important protection parts, target position safety measurements are not performed, and it is difficult to evaluate the material and choose to set the best protection part and protection level when a fire occurs. Summary of the invention

[0005] The purpose of the present invention is to provide a flame retardant performance testing system and a testing method for refractory materials to solve the following technical problems:

[0006] How to improve the safety of the objects protected by refractory materials and improve the safety protection level of the target protection positions of refractory materials.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] Flame retardant performance test system for refractory materials, including:

[0009] A data acquisition module, used to collect surface temperatures of multiple target locations of a refractory protection simulation object through multiple thermal sensors;

[0010] A data testing module is used to perform flame retardancy tests on external refractory materials corresponding to different target locations of the protection simulation object using combustion flames of preset different levels of heat flow, and determine the thermal sensitivity state coefficient of the current target location;

[0011] A data analysis module is used to input the thermal state coefficients corresponding to the current multiple target sites and the preset heat flow data of different levels as initial data into a preset analysis model for machine training, update the flame retardant grade evaluation model and output the evaluation grade of the flame retardant performance of the current refractory material;

[0012] It is also used to analyze the change status of the surface temperature of multiple target sites in real time over a preset period of time to determine the safety status of the protection simulation objects at the corresponding points, and adjust the evaluation level according to the judgment result feedback;

[0013] The information warning module is used to issue a warning signal based on the judgment results.

[0014] Preferably, the data acquisition module includes a main control unit, an acquisition circuit connected to the main control unit, and a synchronization control unit composed of a plurality of synchronization controllers connected to ports of the acquisition circuit;

[0015] The data acquisition module also includes a communication unit, which is used to transmit the data acquisition command signal of the main control unit and the start acquisition command signal;

[0016] The thermal sensor is connected to an end of the acquisition circuit which is far away from the main control unit.

[0017] Preferably, the data testing module includes:

[0018] By formula = Get the thermal state coefficient of the current position;

[0019] in, is the period of time when the current site is in the burning state, The period of time when the current site is in the self-extinguishing state; The preset weight coefficient for the thermal sensitivity of the refractory material in the burning state at the current position; is the preset weight coefficient of the thermal sensitivity effect of the refractory material in the self-extinguishing flame retardant state at the current location; and > >0.

[0020] Preferably, the data analysis module includes:

[0021] By formula Calculate the current evaluation coefficient ;

[0022] in, is the total number of target points, ∈ ; is the thermal parameter value of the target point under the influence of different levels of heat flow, and , is the heat flow parameter, is the number of different heat flow levels; Preset weight coefficients for the correlation of thermal parameters at different target points on the flame retardant properties of refractory materials; is the preset conversion function; is the standard thermal parameter value of the target point; It is the average value of the thermal sensitive parameter value of the target point under the influence of different levels of heat flow.

[0023] Preferably, the evaluation coefficient and the preset evaluation coefficient threshold interval To compare:

[0024] like < , it is judged that the flame retardant performance level of the refractory material is low;

[0025] like ≤ ≤ , it is judged that the flame retardant performance level of the refractory material is normal, and the current evaluation coefficient and the corresponding thermal parameter value are input into the flame retardant level evaluation model to output the evaluation level number;

[0026] like > , it is judged that the flame retardant performance level of the refractory material is relatively high.

[0027] Preferably, the data analysis module also includes:

[0028] S1. Collect the surface temperature variation curve of different target sites over time during the preset period ;

[0029] S2. Design the curve of surface temperature variation over time at the standard historical target point in the same preset period ;

[0030] S3. Change the curve in the same coordinate system and the change curve Compare and calculate the overlap area of ​​the two curves ;

[0031] S4. Calculate the distance between the target point and the flame center ;

[0032] S5. Through the formula Calculate the overlap area of ​​different target points and the distance from the center of the flame Get the status values ​​of different target points ;in, Preset weight coefficients for the impact of flame distances at different target points on the safety risk of status values; The standard coincidence par value; is the standard distance value;

[0033] S6. Set the target point status value With preset threshold To compare:

[0034] like < , then it is judged that the current target point is relatively safe;

[0035] like ∈ , then it is judged that there is a safety risk at the current target point, and feedback is given to adjust the assessment level;

[0036] like > , then the current target point is judged to be less safe and a warning signal is generated.

[0037] Preferably, the data testing module also includes:

[0038] An automatic control device is designed for the horizontal distance between the burning flame and the target refractory protection simulation object to adjust the size of the burning flame, the burning area contacting the refractory material and the flame intensity.

[0039] Test methods for flame retardant properties of refractory materials, including:

[0040] Step 1: collecting the surface temperatures of multiple target locations of the refractory protection simulation object through multiple thermal sensors;

[0041] Step 2: Using the combustion flames of different preset levels of heat flow to perform flame retardancy tests on the external refractory materials corresponding to different target sites of the protection simulation object to determine the thermal sensitivity state coefficient of the current target site;

[0042] Step 3: Input the thermal state coefficients corresponding to the current multiple target sites and the preset heat flow data of different levels as initial data into the preset analysis model for machine training, update the flame retardant grade evaluation model and output the evaluation grade of the flame retardant performance of the current refractory material;

[0043] Step 4: Analyze the surface temperature changes of multiple target sites over a preset period of time to determine the safety status of the protection simulation objects at the corresponding points, and adjust the assessment level and issue a warning signal based on the judgment result feedback.

[0044] Beneficial effects of the present invention:

[0045] (1) The present invention sets a data testing module to perform flame retardancy tests on external refractory materials corresponding to different target sites of the protection simulation object with combustion flames of preset different levels of heat flow, and determines the thermal-sensitive state coefficient of the current target site, so as to ensure that the fire-resistant and flame-retardant properties of the refractory material are obtained in advance, and uses the thermal-sensitive state coefficient as an important indicator for judging and measuring the thermal stability of the object; the obtained thermal-sensitive state coefficient is helpful to judge the protective effect of the refractory material on its protection object, and the overall flame retardancy performance of the refractory material in the flame retardant state process under actual fire conditions is analyzed by data, which reflects the thermal-sensitive coefficient of the refractory material, and further judges the current protection effect of the refractory material.

[0046] (2) The present invention sets a data analysis module to input the thermal state coefficients corresponding to the current multiple target sites and the preset different levels of heat flow data as initial data into the preset analysis model for machine training, detect the refractory material through different levels of heat flow, and judge the rationality of the current combustion level of the refractory material; update the flame retardant grade evaluation model based on the analysis model and output the evaluation level of the flame retardant performance of the current refractory material. The trained and optimized flame retardant grade evaluation model is deployed to the actual data analysis system to perform real-time or batch flame retardant grade evaluation on new data.

[0047] (3) The data analysis module of the present invention is to analyze the change state of the surface temperature of multiple target sites in real time with the preset time period to judge the safety state of the protection simulation object at the corresponding point, and adjust the evaluation level according to the judgment result feedback, by comparing the change curve and the change curve in the same coordinate system, calculating the overlap area value of the two curves, and calculating the distance value of the target point from the center of the flame; the overlap area value of different target points and the distance value from the center of the flame are calculated by formula to obtain the state value of different target points; based on the overlap area value, the safety state of the protection simulation object at the corresponding point can be judged, and the adjustment of the feedback evaluation level helps to take timely measures to prevent the escalation of potential safety risks.

[0048] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0050] Figure 1 It is a module diagram of the flame retardant performance testing system of the refractory material of the present invention;

[0051] Figure 2 This is a step diagram of the flame retardant performance testing method of the refractory material of the present invention. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] However, the existing methods only consider the flame retardancy of the surface of refractory materials, and do not fully consider the safety of the protection objects of the current refractory materials; and usually in the actual operation of refractory material protection, the distance between most burning flames and refractory materials cannot be controlled, and the burning points of the burning flames contacting the refractory materials are different, and the temperature of the corresponding parts of the protection objects is also different. Therefore, for some more important protection parts, target position safety measurements are not performed, and it is difficult to evaluate the material and choose to set the best protection part and protection level when a fire occurs.

[0054] See also Figure 1 As shown, the present invention is a flame retardant performance testing system and a testing method for refractory materials. In order to solve the above technical problems, this design completes the safety analysis of refractory material testing and refractory material protection simulation objects by setting up a flame retardant performance testing system for refractory materials, so as to realize a comprehensive safety evaluation process of the flame retardant performance of refractory materials in fire conditions.

[0055] The flame retardant performance test system of refractory materials includes:

[0056] A data acquisition module, used to collect surface temperatures of multiple target locations of a refractory protection simulation object through multiple thermal sensors;

[0057] A data testing module is used to perform flame retardancy tests on external refractory materials corresponding to different target locations of the protection simulation object using combustion flames of preset different levels of heat flow, and determine the thermal sensitivity state coefficient of the current target location;

[0058] A data analysis module is used to input the thermal state coefficients corresponding to the current multiple target sites and the preset heat flow data of different levels as initial data into a preset analysis model for machine training, update the flame retardant grade evaluation model and output the evaluation grade of the flame retardant performance of the current refractory material;

[0059] It is also used to analyze the change status of the surface temperature of multiple target sites in real time over a preset period of time to determine the safety status of the protection simulation objects at the corresponding points, and adjust the evaluation level according to the judgment result feedback;

[0060] The information warning module is used to issue a warning signal based on the judgment results.

[0061] In the above technical solution, this embodiment realizes the flame retardancy test and safety analysis process of refractory materials through four modules: data acquisition module, data test module, data analysis module and information warning module. Specifically:

[0062] First, a data acquisition module is set up to ensure that the temperature of the object protected by the refractory material is collected. Specifically, the surface temperatures of multiple target sites of the refractory material protection simulation object are collected through multiple thermistors. In the specific implementation of the test process, a relatively closed and safe box or space experiment is required to ensure the safe operability of the staff performing the test.

[0063] Furthermore, the data acquisition module provided includes a main control unit, an acquisition circuit connected to the main control unit, and a synchronous control unit composed of multiple synchronous controllers connected to the acquisition circuit port; the main control unit controls the start valve of the combustion flame, executes and terminates test instructions, and conveys control instructions, etc. In short, the main control unit is used to realize the safe data acquisition and data transmission process; the acquisition circuit is used to collect data electrical signals transmitted by multiple thermistors; the multiple synchronous controllers connected at the acquisition circuit port are used to realize the synchronous detection of temperature information collected by thermistors at multiple acquisition points and the simultaneous acquisition of temperature data.

[0064] Furthermore, the data acquisition module is also provided with a communication unit, through which the data fed back by the main control unit is transmitted to the acquisition circuit end, that is, the acquisition instruction signal is started according to the acquisition instruction; this embodiment also provides a thermistor connected to the end of the acquisition circuit end away from the main control unit.

[0065] Secondly, a data testing module is set up to perform flame retardant tests on the external refractory materials corresponding to different target sites of the protection simulation object by using combustion flames with preset different levels of heat flow to determine the thermal state coefficient of the current target site. The data testing module ensures that the fire resistant and flame retardant properties of the refractory materials are obtained in advance, and the thermal state coefficient is used as an important indicator for judgment. The thermal sensitivity coefficient refers to the ratio of a certain physical quantity (such as resistance, capacitance, expansion, etc.) of an object to the temperature change when the temperature changes, and reflects the degree of change of physical quantities such as flame retardant properties of the object when the temperature changes. It is an important parameter for measuring the thermal stability of the object. The thermal state coefficient of this embodiment refers to the rate of change of the flame retardant properties of the material from the time period from combustion to self-extinguishing when the temperature of the material changes before and after combustion, and then determines the thermal state coefficient of the current target site.

[0066] It mainly involves the following steps: first, flame retardant test: according to the predetermined test process, flame retardant test is carried out on the target site of the protection simulation object using different levels of heat flow; then data collection is carried out: during the test, flame retardant time, temperature change, heat flow and other data are recorded; then, data analysis is carried out: statistical analysis methods, such as regression analysis, are used to determine the thermal sensitivity state coefficient; this usually involves drawing a graph of flame retardant time and temperature change, and calculating the thermal sensitivity and other correlation coefficients of the protection object affected by the flame retardancy; finally, result evaluation is carried out: the thermal sensitivity state coefficient of the target site is evaluated according to the analysis results, so as to better understand the flame retardant performance of the material under actual fire conditions, and provide a basis for improving the flame retardant properties of fireproof materials.

[0067] The thermal coefficient is usually calculated by processing the data using the least squares method to calculate the thermal coefficient value. The relationship between the resistance value and temperature of the thermistor can be expressed by an exponential function, and the formula is ,in, is at temperature The resistance value under At the reference temperature The resistance value under It is the thermal sensitivity coefficient, and then the thermal sensitivity state coefficient of the refractory material is determined according to the combustion state change of the thermal sensitivity coefficient.

[0068] Specifically, in this embodiment, based on the improved idea of ​​the above formula, the thermal state coefficient calculated by the data testing module is designed as follows:

[0069] By formula = Get the thermal state coefficient of the current position;

[0070] in, is the period of time when the current site is in the burning state, The period of time when the current site is in the self-extinguishing state; The preset weight coefficient for the thermal sensitivity of the refractory material in the burning state at the current position; is the preset weight coefficient of the thermal sensitivity effect of the refractory material in the self-extinguishing flame retardant state at the current location; and > >0.

[0071] Acquiring the thermal-sensitive state coefficient through the data testing module is helpful to determine the protective effect of refractory materials on their protected objects. By conducting a digital analysis of the overall flame-retardant performance of refractory materials during the flame-retardant state process under actual fire conditions, the thermal-sensitive coefficient of refractory materials can be reflected, thereby determining the protective effect of the current refractory materials.

[0072] As an embodiment of the present invention, different position distributions of burning flames also have different effects on the safety of the refractory protection simulation object. In order to analyze the effects of different horizontal burning distances on the safety of the protection simulation object and implement the adjustment analysis of different flame intensities, the data test module set in this embodiment also includes:

[0073] An automatic control device is designed for the horizontal distance between the burning flame and the target refractory protection simulation object to adjust the size of the burning flame, the burning area contacting the refractory material and the flame intensity.

[0074] Third, a data analysis module is set up. The first function is to input the thermal state coefficients corresponding to the current multiple target sites and the preset different levels of heat flow data as initial data into the preset analysis model for machine training, detect the refractory materials through different levels of heat flow, and judge the rationality of the current combustion level of the refractory materials; update the flame retardant grade evaluation model based on the analysis model and output the evaluation level of the flame retardant performance of the current refractory materials. The trained and optimized flame retardant grade evaluation model is deployed to the actual data analysis system to perform real-time or batch flame retardant grade evaluation on new data. The machine training here is based on deep learning of artificial intelligence. Common deep learning algorithms include convolutional neural network (CNN), recurrent neural network (RNN), long short-term memory network (LSTM), etc.; by constructing the statistical characteristics of thermal state coefficients corresponding to multiple target sites and preset different levels of heat flow, constructing time series characteristics and related physical models as data input, and performing convolution analysis based on the convolutional neural network model, through supervised feature learning and normalization processing, analyze and output the evaluation results.

[0075] As an implementation mode of the present invention, specifically, the process of the data analysis module calculating and obtaining the evaluation coefficient includes:

[0076] By formula Calculate the current evaluation coefficient ;

[0077] in, is the total number of target points, ∈ ; is the thermal parameter value of the target point under the influence of different levels of heat flow, and , is the heat flow parameter, is the number of different heat flow levels; Preset weight coefficients for the correlation of thermal parameters at different target points on the flame retardant properties of refractory materials; is the preset conversion function; is the standard thermal parameter value of the target point; It is the average value of the thermal sensitive parameter value of the target point under the influence of different levels of heat flow.

[0078] In the above technical solution, the flame retardant performance of the refractory material is fed back by obtaining the value of the evaluation coefficient, which is specifically determined by analyzing the cumulative change of the thermal sensitive parameter value at the target point. It is a conversion function set according to the data of historical thermal parameter changes to ensure that the evaluation coefficient is within a specific reasonable range; It is obtained by fitting calculations based on historical empirical data and will not be elaborated here.

[0079] As one embodiment of the present invention, the evaluation coefficient and the preset evaluation coefficient threshold interval To compare:

[0080] like < , it is judged that the flame retardant performance level of the refractory material is low;

[0081] like ≤ ≤ , it is judged that the flame retardant performance level of the refractory material is normal, and the current evaluation coefficient and the corresponding thermal parameter value are input into the flame retardant level evaluation model to output the evaluation level number;

[0082] like > , it is judged that the flame retardant performance level of the refractory material is relatively high.

[0083] In the above technical solution, by analyzing the evaluation coefficient The size of the flame retardant grade of the refractory material is used to reflect the rationality of the setting of the flame retardant grade of the refractory material. and the preset evaluation coefficient threshold interval Size, judge if < , then it is judged that the flame retardant performance level of the refractory material is low; if ≤ ≤ , then the flame retardant performance level of the refractory material is judged to be normal, and the current evaluation coefficient and the corresponding thermal parameter value are input into the flame retardant level evaluation model to output the evaluation level number; if > , it is judged that the flame retardant performance level of the refractory material is relatively high.

[0084] As an embodiment of the present invention, the second function of the data analysis module is to analyze the change state of the surface temperature of multiple target sites over a preset period in real time to judge the safety state of the protection simulation object at the corresponding point, and adjust the evaluation level according to the judgment result feedback: First, the surface temperature change curve of different target sites over time during a preset period is collected by a thermal sensor , the temperature information of the target site is detected by the thermal sensor at time intervals to record its surface temperature changes; then, the surface temperature change curve of the standard historical target point over time in the same preset period is designed In order to make an effective comparison and evaluation, a curve of the surface temperature of the target point at the historical standard over time is designed, and these standard curves can be established based on past data, representing the temperature change trend under normal operating conditions; the curve of the surface temperature of the target point at the historical standard over time established helps to identify abnormal conditions and trends; then, after obtaining the real-time temperature curve and the standard historical curve, the data analysis module will compare the two in the same coordinate system; by calculating the overlap area value between the two curves, the similarity between the real-time data and the historical standard can be quantified: the larger the overlap area, the closer the real-time data is to the historical standard, and the more stable the system state; conversely, the smaller the area, the possible abnormality or risk; in this embodiment, by comparing the change curve in the same coordinate system and the change curve Compare and calculate the overlap area of ​​the two curves .

[0085] Further, the distance between the target point and the flame center is calculated. ; Through the formula Calculate the overlap area of ​​different target points and the distance from the center of the flame Get the status values ​​of different target points ;in, Preset weight coefficients for the impact of flame distances at different target points on the safety risk of status values; The standard coincidence par value; is the standard distance value; finally, the target point status value With preset threshold Compare: If < , then the current target point is judged to be more secure; if ∈ , then it is judged that there is a safety risk at the current target point, and feedback is given to adjust the assessment level; if > , the current target point is judged to be less safe and an early warning signal is generated; based on the overlap area value , it can judge the safety status of the protection simulation object at the corresponding point, and the adjustment of the feedback evaluation level helps to take timely measures to prevent the escalation of potential safety risks.

[0086] Fourthly, an information warning module is set up to ensure that a warning signal is issued according to the judgment result of the data analysis module; and the data testing module set up during the specific implementation process can also adjust the corresponding test indicators according to the signal of the information warning module to ensure that the thermal sensitive state of the protected object is within a safe range.

[0087] See also Figure 2 As shown, in one embodiment, a method for testing the flame retardant performance of a refractory material is provided. The method for testing the flame retardant performance of a refractory material is to complete the flame retardant performance test and analysis process of the refractory material through the flame retardant performance test system of the refractory material. The specific method steps are as follows:

[0088] Step 1: collecting the surface temperatures of multiple target locations of the refractory protection simulation object through multiple thermal sensors;

[0089] Step 2: Using the combustion flames of different preset levels of heat flow to perform flame retardancy tests on the external refractory materials corresponding to different target sites of the protection simulation object to determine the thermal sensitivity state coefficient of the current target site;

[0090] Step 3: Input the thermal state coefficients corresponding to the current multiple target sites and the preset heat flow data of different levels as initial data into the preset analysis model for machine training, update the flame retardant grade evaluation model and output the evaluation grade of the flame retardant performance of the current refractory material;

[0091] Step 4: Analyze the surface temperature changes of multiple target sites over a preset period of time to determine the safety status of the protection simulation objects at the corresponding points, and adjust the assessment level and issue a warning signal based on the judgment result feedback.

[0092] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device, equipment, and non-volatile computer storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0093] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0094] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined in this application, they shall all fall within the protection scope of the present invention.

Claims

1. The flame retardant performance testing system of refractory materials is characterized by: include: A data acquisition module, used to collect surface temperatures of multiple target locations of a refractory protection simulation object through multiple thermal sensors; A data testing module is used to perform flame retardancy tests on external refractory materials corresponding to different target locations of the protection simulation object using combustion flames of preset different levels of heat flow, and determine the thermal sensitivity state coefficient of the current target location; A data analysis module is used to input the thermal state coefficients corresponding to the current multiple target sites and the preset heat flow data of different levels as initial data into a preset analysis model for machine training, update the flame retardant grade evaluation model and output the evaluation grade of the flame retardant performance of the current refractory material; It is also used to analyze the change status of the surface temperature of multiple target sites in real time over a preset period of time to determine the safety status of the protection simulation objects at the corresponding points, and adjust the evaluation level according to the judgment result feedback; An information warning module is used to issue a warning signal based on the judgment result; The data testing module includes: By formula = Get the thermal state coefficient of the current position; in, is the period of time when the current site is in the burning state, The period of time when the current site is in the self-extinguishing state; The preset weight coefficient for the thermal sensitivity of the refractory material in the burning state at the current position; is the preset weight coefficient of the thermal sensitivity effect of the refractory material in the self-extinguishing flame retardant state at the current location; and > >0; The data analysis module includes: By formula Calculate the current evaluation coefficient ; in, is the total number of target points, ∈ ; is the thermal parameter value of the target point under the influence of different levels of heat flow, and , is the heat flow parameter, is the number of different heat flow levels; Preset weight coefficients for the correlation of thermal parameters at different target points on the flame retardant properties of refractory materials; is the preset conversion function; is the standard thermal parameter value of the target point; is the average value of the thermal sensitive parameter value of the target point under the influence of different levels of heat flow; The evaluation coefficient and the preset evaluation coefficient threshold interval To compare: like < , it is judged that the flame retardant performance level of the refractory material is low; like ≤ ≤ , it is judged that the flame retardant performance level of the refractory material is normal, and the current evaluation coefficient and the corresponding thermal parameter value are input into the flame retardant level evaluation model to output the evaluation level number; like > , it is judged that the flame retardant performance level of the refractory material is high; The data analysis module also includes: S1. Collect the surface temperature variation curve of different target sites over time during the preset period ; S2. Design the curve of surface temperature variation over time at the standard historical target point in the same preset period ; S3. Change the curve in the same coordinate system and the change curve Compare and calculate the overlap area of ​​the two curves ; S4. Calculate the distance between the target point and the flame center ; S5. Through the formula Calculate the overlap area of ​​different target points and the distance from the center of the flame Get the status values ​​of different target points ;in, Preset weight coefficients for the impact of flame distances at different target points on the safety risk of status values; The standard coincidence par value; is the standard distance value; S6. Set the target point status value With preset threshold To compare: like < , then it is judged that the current target point is relatively safe; like ∈ , then it is judged that there is a safety risk at the current target point, and feedback is given to adjust the assessment level; like > , then the current target point is judged to be less safe and a warning signal is generated.

2. The flame retardant performance testing system of refractory materials according to claim 1, characterized in that: The data acquisition module includes a main control unit, an acquisition circuit connected to the main control unit, and a synchronization control unit composed of multiple synchronization controllers connected to the acquisition circuit port; The data acquisition module also includes a communication unit, which is used to transmit the data acquisition instruction signal and the start acquisition instruction signal of the main control unit; The thermal sensor is connected to an end of the acquisition circuit that is away from the main control unit.

3. The flame retardant performance testing system of refractory materials according to claim 1, characterized in that: The data testing module also includes: An automatic control device is designed for the horizontal distance between the burning flame and the target refractory protection simulation object to adjust the size of the burning flame, the burning area contacting the refractory material and the flame intensity.

4. A method for testing the flame retardancy of refractory materials, characterized in that: The flame retardant performance testing system for refractory materials according to claims 1 to 3 is used to complete the flame retardant performance testing and analysis process of refractory materials, and the method comprises: Step 1: collecting the surface temperatures of multiple target locations of the refractory protection simulation object through multiple thermal sensors; Step 2: Using the combustion flames of different preset levels of heat flow to perform flame retardancy tests on the external refractory materials corresponding to different target sites of the protection simulation object to determine the thermal sensitivity state coefficient of the current target site; Step 3: Input the thermal state coefficients corresponding to the current multiple target sites and the preset heat flow data of different levels as initial data into the preset analysis model for machine training, update the flame retardant grade evaluation model and output the evaluation grade of the flame retardant performance of the current refractory material; Step 4: Analyze the surface temperature changes of multiple target sites over a preset period of time to determine the safety status of the protection simulation objects at the corresponding points, and adjust the assessment level and issue a warning signal based on the judgment result feedback.

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