Flame-retardant performance simulation detection system for flame-retardant material

Abstract

The invention is suitable for the technical field of material performance detection and simulation, and provides a flame-retardant material flame-retardant performance simulation detection system which comprises a modular test cavity, a high-pressure flaming device, a dynamic gas circulation system, a multi-parameter sensor module, a central control unit and a simulation analysis platform. According to the invention, through the modularized test cavity and the high-pressure flaming device, the combustion characteristics of the flame-retardant material in a high-pressure and dynamic airflow fire environment can be truly represented. The dynamic gas circulation system accurately simulates a dynamic pressure field of a fire scene, the multi-parameter sensor module monitors temperature, pressure and flue gas data of flames and material surfaces in real time, the central control unit feeds back and regulates in real time, and the stability and accuracy of experimental conditions are guaranteed. A simulation analysis platform is combined with numerical simulation to quantitatively analyze the flame retardant property of the material, so that the test reliability of the flame retardant material is remarkably improved.

Description

Technical Field

[0001] The invention is applicable to the technical field of material performance detection and simulation, and specifically provides a flame retardant performance simulation detection system for flame retardant materials. Background Art

[0002] In the field of flame retardant material performance evaluation, accurate simulation of fire scenes is crucial to test the true performance of materials. Although the existing flame retardant performance testing technology has made certain progress, it still has obvious limitations in simulating the complex environment of actual fires. These limitations make the current test results deviate from the performance of materials in real fire scenes, which in turn affects the research and development and application of flame retardant materials.

[0003] Traditional testing methods, such as flame jet tests, combustion tests, and fire resistance tests, are insufficient in simulating the high-pressure combustion environment at a fire scene. The Chinese invention patent with application number 201711260394.4 discloses a cable fire performance test device, which mainly relies on a fixed gas furnace and a thermocouple for temperature monitoring. However, a fire scene often produces a high-pressure combustion environment due to closed structures and airflow disturbances. The existing technology is difficult to truly reproduce the diffusion behavior of flames under the action of high-pressure airflow, resulting in the test results being unable to fully reflect the performance of the material in an actual fire. In addition, the existing technology is also deficient in simulating the interaction between dynamic airflow and flames in a fire.

[0004] In addition, the application of real-time monitoring and closed-loop control technology in existing flame retardant performance testing equipment is not perfect enough. The Chinese invention patent with application number 201910185229.X proposed a high-throughput UL-94 flame retardant performance testing equipment. Although the test efficiency has been improved, its flame injection system is still in a normal pressure state, and there is a lack of a closed-loop control mechanism for adjusting flame intensity and airflow pressure based on real-time data feedback. This deficiency results in the inability to accurately simulate the actual performance of flame retardant materials under extreme fire conditions, which in turn affects the accurate evaluation of the performance of the material in real fire scenarios. Summary of the invention

[0005] The purpose of the present invention is to provide a flame retardant material flame retardant performance simulation detection system, which can perform flame retardant performance simulation detection on flame retardant materials under high pressure and dynamic airflow environment, so as to more accurately evaluate the flame retardant performance of the material.

[0006] In order to achieve the above object, the present invention provides a flame retardant material flame retardant performance simulation detection system, comprising: Modular test chamber, used to accommodate the flame retardant material samples to be tested, with a removable liner and interchangeable detection modules inside the chamber to accommodate flame retardant materials of different specifications and application environments; A high-pressure flame spraying device, comprising a fuel and combustion-supporting gas supply system, an adjustable mixer and a nozzle, wherein the nozzle can achieve accurate output of high-pressure flame while adjusting the spray angle, pressure, temperature and flow rate; A dynamic gas circulation system, which includes a variable speed fan, an adjustable flow valve and a pressure control module, is used to form a continuous and uniform high-pressure airflow in the test chamber to simulate the combustion environment at the fire scene; Multi-parameter sensor module, including temperature, pressure, airflow velocity sensors and smoke composition detection devices arranged in the test chamber, and equipped with infrared thermal imaging devices to achieve real-time monitoring of the flame and sample surface status; The central control unit is connected to the above modules through a high-speed data bus, collects and processes sensor data in real time, and outputs adjustment signals according to the preset control strategy to perform closed-loop adaptive control of the high-pressure flamethrower and the dynamic gas circulation system; The simulation analysis platform, based on the preset numerical model, compares the real-time collected data with the model parameters, and conducts a comprehensive analysis of the combustion characteristics and heat conduction behavior of the sample through numerical simulation methods, providing a theoretical basis for the quantitative evaluation of flame retardant properties.

[0007] Preferably, the high-pressure flamethrower adopts a multi-stage fuel gas mixing technology and is equipped with a precision flow regulator and a temperature control module. It can achieve fine control of the flame spraying pressure, temperature and flow rate by adjusting the mixing ratio of the fuel and the combustion-supporting gas and the nozzle parameters, thereby truly reproducing the high-pressure combustion conditions in the fire scene.

[0008] Preferably, the dynamic gas circulation system utilizes a variable speed fan and an adjustable flow valve to work together, monitors the airflow pressure in the test chamber in real time through a closed-loop pressure control module, and automatically adjusts the fan speed and valve opening so that the test chamber always maintains a preset high-pressure airflow state to simulate the dynamic pressure changes caused by the closed environment and external disturbances at a fire scene.

[0009] Preferably, the multi-parameter sensor module transmits data in real time to the central control unit, and the infrared thermal imaging device is used to capture the surface temperature distribution of the sample and the changes in flame morphology, ensuring the accurate collection of various parameters in the dynamic environment of the fire scene.

[0010] Preferably, the central control unit adopts a closed-loop adaptive control strategy to perform real-time regulation of the high-pressure flame spraying device and the dynamic gas circulation system. The control strategy includes: S1, real-time acquisition of temperature, pressure and airflow velocity signals from the multi-parameter sensor module; S2. According to the preset fire condition parameters and test requirements, the collected signal is compared with the target parameters to determine the control error; S3. Automatically adjust the system output parameters according to the control error, so that the working state of the high-pressure flame spraying device and the dynamic gas circulation system is always maintained within the preset parameter range, ensuring that the flame and airflow act on the sample stably and evenly during the test.

[0011] Preferably, the modular test chamber adopts a standardized module structure, the lining and the detection module are replaceable, and a plurality of data collection points and observation windows are arranged on the wall of the chamber, so as to facilitate simulation detection and on-site observation of flame retardant materials of different specifications, and simplify system maintenance and subsequent upgrade work.

[0012] Preferably, the simulation analysis platform integrates the real-time data collected by the central control unit with the pre-established fire dynamics numerical model, calculates the temperature field distribution, heat transfer rate and combustion evolution process of the sample through numerical simulation and data fitting methods, and provides data support and theoretical basis for the quantitative evaluation of flame retardant properties.

[0013] Preferably, the high-pressure flamethrower, dynamic gas circulation system, multi-parameter sensor module and central control unit constitute an overall linkage control system, and information sharing and synchronous adjustment are achieved between the modules through a high-speed data bus, so that flame spraying, airflow control and data acquisition are coordinated under multi-variable, real-time closed-loop feedback to accurately reproduce the combustion and heat conduction characteristics of flame retardant materials under extreme conditions in the fire scene.

[0014] Preferably, the method comprises the following steps: A1. Install the flame retardant material sample to be tested in the modular test chamber and seal the chamber; A2. Start the dynamic gas circulation system to establish a preset high-pressure airflow environment in the test chamber; A3. Start the high-pressure flame spraying device to spray flames on the sample; A4. Use the multi-parameter sensor module to collect temperature, pressure, air flow velocity and smoke composition data in real time during the test; A5. The central control unit automatically adjusts the working parameters of the high-pressure flame spraying device and the dynamic gas circulation system according to the collected data; A6. Transmit real-time data to the simulation analysis platform and calculate the temperature field distribution, combustion characteristics and heat transfer behavior of the sample through numerical simulation methods; A7. According to the simulation results and the temperature change and combustion delay index of the sample within the specified fire resistance time, the flame retardant performance of the flame retardant material is quantitatively evaluated, and a test report is generated based on the evaluation results.

[0015] The purpose of the present invention is to provide a flame retardant material flame retardant performance simulation detection system, which has the following beneficial effects: The present invention uses a modular test chamber and a high-pressure flame spraying device to truly reproduce the combustion characteristics of flame-retardant materials in a high-pressure, dynamic airflow fire environment. The dynamic gas circulation system accurately simulates the dynamic pressure field at the fire scene, and the multi-parameter sensor module monitors the temperature of the flame and the material surface in real time, as well as the pressure and smoke data in the chamber. The central control unit provides real-time feedback and control to ensure the stability and accuracy of the experimental conditions. The simulation analysis platform combines numerical simulation to quantitatively analyze the flame retardant properties of the material, significantly improving the reliability of flame retardant material testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the system of the present invention; Figure 2 It is a schematic diagram of the modular test chamber structure of the present invention; Figure 3 It is a schematic structural diagram of the high-pressure flame spraying device of the present invention; Figure 4 It is a structural schematic diagram of the dynamic gas circulation system of the present invention; Figure 5 It is a schematic diagram of the arrangement of the multi-parameter sensor module of the present invention; Figure 6 It is a schematic diagram of the linkage between the central control unit and each module of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] The overall structure of the flame retardant material flame retardant performance simulation detection system proposed by the present invention is as follows: Figures 1 to 6 The system mainly includes a modular test chamber, a high-pressure flamethrower, a dynamic gas circulation system, a multi-parameter sensor module, a central control unit and a simulation analysis platform. The various components are interconnected through a high-speed data bus, forming a comprehensive detection platform with real-time closed-loop and linkage control.

[0019] When implementing the present invention, the modular test chamber adopts a standardized module design, and the main structure is generally made of high temperature resistant and corrosion resistant metal materials, and a detachable heat insulation and fireproof lining is arranged inside, and an interchangeable detection module can be replaced according to the size and shape of the flame retardant material to be tested. The wall of the chamber is provided with a number of observation windows and data collection points, which are convenient for real-time monitoring of the test process and ensure the convenience of system maintenance and subsequent upgrades.

[0020] The high-pressure flame spraying device consists of a fuel and combustion-supporting gas supply system, a mixer and a nozzle. The supply system includes a high-precision flow control device and a temperature control module to ensure that the fuel and gas are mixed evenly; the nozzle can adjust the spray angle, pressure, temperature and flow rate as needed to produce a high-pressure, high-temperature flame. By changing the mixing ratio and spray parameters, it can simulate various extreme combustion conditions at the fire scene and provide a real and harsh flame impact environment for flame retardant materials.

[0021] The dynamic gas circulation system includes a variable speed fan, an adjustable flow valve and a pressure control module. The function of this system is to form a continuous and uniform high-pressure airflow in the test chamber, thereby simulating the dynamic pressure environment of the fire scene caused by the closed structure and external disturbances. The pressure control module in the system automatically adjusts the fan speed and valve opening by real-time monitoring the airflow pressure signal in the chamber to ensure that the entire test process is always in the preset high pressure state, providing stable conditions for heat transfer and convection effects between the flame and the flame retardant material.

[0022] The multi-parameter sensor module is arranged in the modular test chamber, mainly including temperature sensors, pressure sensors, air flow velocity sensors and smoke composition detection devices, and is equipped with infrared thermal imaging devices. The infrared thermal imaging devices are used to capture the surface temperature distribution of the sample and the changes in flame morphology. Each sensor transmits real-time data to the central control unit through a high-speed data bus to ensure continuous monitoring of the fire environment and the surface temperature distribution of the sample.

[0023] The central control unit is the core of the system. Its main function is to collect and process the data fed back by each sensor module in real time, and issue adjustment instructions to the high-pressure flamethrower and dynamic gas circulation system according to the pre-set control strategy to achieve closed-loop adaptive control of each component of the system. This control strategy automatically adjusts the operating status of each subsystem by comparing the deviation between the collected data and the preset fire condition parameters, ensuring that the test environment always remains under the predetermined extreme fire conditions, thereby ensuring the authenticity and stability of the detection data.

[0024] The simulation analysis platform combines the real-time data transmitted by the central control unit with the pre-established numerical model of fire dynamics, and uses numerical simulation and data fitting methods to calculate the temperature field distribution, heat transfer rate and combustion evolution process of the sample under the action of flame. By analyzing the temperature rise rate, delayed ignition time, flame spread speed and structural integrity of the sample within the specified fire resistance time, the fire resistance performance of the flame retardant material is quantitatively evaluated and a test report is formed.

[0025] In the actual use of the system, the user first installs the flame retardant material sample to be tested in the modular test chamber, seals the chamber, and ensures that there is no leakage and interference between the sample and the lining and the detection module. The airtightness can be verified by the negative pressure detection method. In addition, it is necessary to check whether the lining inside the chamber is intact to prevent high-temperature airflow from damaging the chamber structure.

[0026] Then start the dynamic gas circulation system to establish a preset high-pressure airflow environment; specifically, input the target airflow pressure, flow rate and circulation mode into the central control unit. The circulation mode can be selected as pulsating circulation or steady-state circulation, and start the variable-speed fan and adjustable flow valve. The central control unit also needs to preset a safety shutdown program. If abnormal vibration or noise is detected, the safety shutdown program will be triggered immediately to check for fan bearing wear or valve blockage.

[0027] Then start the high-pressure flame spraying device to spray flames on the sample; specifically, select the mixing ratio of fuel and combustion-supporting gas according to the sample type, and adjust the supply rate through a high-precision flow meter; before starting the nozzle, perform a flame pre-combustion test, spray the flame without a sample, and use an infrared thermal imager to calibrate the flame temperature and coverage to ensure that the flame core area evenly covers the sample surface. The nozzle pitch angle and lateral displacement are adjusted by a servo motor to simulate the tilted impact or localized concentrated combustion of the flame in the fire scene.

[0028] Each sensor module collects test parameters in real time during the entire process, such as temperature, pressure, air flow velocity and smoke composition data during the test, and transmits the data to the central control unit; specifically, K-type thermocouples are deployed in a grid layout on the sample surface and flame action area, piezoelectric pressure sensors and hot wire anemometers are arranged in the cavity, and smoke composition detection devices are arranged to collect harmful gas concentrations in real time. Data is transmitted via shielded twisted pair cables to avoid electromagnetic interference. Infrared thermal imagers are also arranged to generate a temperature distribution heat map of the sample surface, and hot spots are identified through image processing algorithms.

[0029] The central control unit automatically adjusts the flame and airflow status according to the feedback data to keep the test environment stable; specifically, through the built-in fuzzy-PID composite control algorithm, the acquisition frequency is first set, and after collecting the sensor data, it is compared with the preset fire condition parameters. If the temperature or pressure deviation exceeds the tolerance, a pulse signal is immediately sent to the flamethrower to adjust the fuel flow or nozzle pressure. The dynamic gas circulation system also responds synchronously. For example, when the local combustion of the sample causes airflow turbulence, the pressure loss is compensated by increasing the fan speed to maintain the Reynolds number in the cavity above the turbulence critical value to ensure that the thermal convection effect meets the real fire scene conditions; if the sample is detected to be broken or the flame is abnormally extinguished, the central control unit automatically cuts off the fuel supply, starts the nitrogen inerting system to suppress re-ignition, and records the fault code for subsequent analysis.

[0030] The real-time data is transmitted to the simulation analysis platform, and the temperature field distribution, combustion characteristics and heat transfer behavior of the sample are calculated through numerical simulation methods; specifically, the real-time data collected by the multi-parameter sensor module, such as temperature, pressure, airflow velocity, smoke composition, etc., are synchronously sent to the simulation analysis platform. The data transmission delay is controlled at the millisecond level to ensure the synchronization of the simulation and test processes; after receiving the data, the simulation analysis platform immediately calls the pre-loaded fire dynamics numerical model and inputs the real-time data as dynamic boundary conditions.

[0031] The simulation analysis platform conducts a comprehensive analysis of the test data, quantitatively evaluates the flame retardant properties of flame retardant materials based on the simulation results and indicators such as temperature changes and combustion delays of the specimens within the specified fire resistance time, and generates a test report based on the simulation results.

[0032] Specifically, the indicators for quantitatively evaluating the flame retardant properties of flame retardant materials include: The rate of temperature rise and uniformity of temperature distribution on the sample surface; the sample surface temperature distribution heat map generated by the infrared thermal imager, combined with the precise temperature data provided by the K-type thermocouple, analyzes the change trend and distribution of the sample surface temperature over time.

[0033] Delay ignition time and flame spread speed; use piezoelectric pressure sensor and hot wire anemometer to monitor the ignition delay time after the flame contacts the sample and the speed of flame spread along the sample surface to understand the material's ability to resist flame invasion.

[0034] Changes in the concentration of harmful substances in the flue gas; use the flue gas composition detection device to monitor the concentration of harmful gases generated during the combustion process in real time.

[0035] Based on the above indicators, comprehensively evaluate whether the sample meets the predetermined fire safety standards.

[0036] Through the linkage operation between various modules, the system can truly simulate the heating and combustion behavior of flame retardant materials under extreme fire conditions, thereby providing strong data support for product development and safety performance improvement.

[0037] Embodiment 1 In a specific embodiment, the system uses a modular test chamber with a diameter of 1.2 meters, and stainless steel is selected as the main material, and the lining is covered with high-temperature resistant fireproof felt. The high-pressure flame spraying device is equipped with a liquefied petroleum gas and oxygen supply system, and the mixing ratio of the two is adjusted by a precision flow meter, so that the flame temperature output by the nozzle is controlled at about 1100°C and the injection pressure is not less than 0.8MPa. The dynamic gas circulation system uses a variable speed fan and an adjustable flow valve to maintain the air flow pressure in the chamber above 0.5MPa. During the test, multiple temperature, pressure and air flow velocity sensors are installed in the test chamber, and an infrared thermal imager is used to monitor the surface temperature distribution of the sample. The central control unit collects data from each sensor in real time, adjusts the flame and air flow parameters through a preset control strategy, and ensures that the test process is stable. After the test, the temperature field distribution and heat transfer behavior of the sample under the action of the flame are calculated through the simulation analysis platform, and the combustion delay time and thermal stability of the flame retardant material under high-pressure fire conditions are obtained, providing a basis for subsequent product improvements.

[0038] Embodiment 2 In another specific embodiment, the system uses a modular test chamber to test flame-retardant panels with a size of 300×300×50 mm. The high-pressure flame spraying device uses a mixture of propane and air to adjust the nozzle to achieve a flame spray temperature of more than 1000°C and a stable spray flow rate. The dynamic gas circulation system forms a uniform high-pressure airflow in the cavity through a variable-speed fan to keep the internal pressure stable at about 0.6MPa. During the test, multiple sets of sensors are arranged on the surface and around the flame-retardant panel to collect temperature, pressure and airflow data, and an infrared imager is used to monitor the contact state between the flame and the sample. The central control unit analyzes the collected data in real time and automatically adjusts the parameters of the flame spraying device and the fan to ensure that the test conditions strictly meet the preset parameters. After the test data is processed by the simulation analysis platform, the temperature change curve, combustion spread speed and local thermal stress distribution of the sample under the action of the flame are obtained, which provides sufficient experimental basis for the evaluation of the fire resistance performance of this type of flame-retardant panel.

[0039] Embodiment 3 In the third specific embodiment, the system is used to detect the performance of a flame retardant coating in the fire protection of steel structures. The size of the modular test chamber is 1.5×1.5×1.0 meters, and the inner wall is coated with a high temperature fireproof layer, which is suitable for simulating the actual heating conditions of large building components. The high-pressure flame spraying device adopts a methane and oxygen mixture, and the output flame temperature can be adjusted to above 1200°C, and the spray pressure is controlled at about 1.0MPa. The dynamic gas circulation system adopts a two-stage fan to work together to form a stable high-pressure airflow environment in the cavity, and the airflow speed and pressure meet the preset parameters. During the test, multiple groups of temperature sensors and infrared thermal imagers are arranged on the surface of the steel structure sample covered with flame retardant coating to monitor the surface temperature and combustion dynamics of the sample in real time. The central control unit processes the real-time collected data, automatically adjusts the flame spray and airflow state, and ensures that all parameters are stable and consistent during the test. After the test, the data is comprehensively simulated through the simulation analysis platform to obtain the heat transfer, combustion evolution and structural response of the sample under the impact of the flame, and finally evaluate the overall fire retardant performance of the flame retardant coating, and form a test report to guide subsequent process improvements and product upgrades.

[0040] Unless otherwise specified, the materials, reagents, etc. used in all embodiments of the present invention can be obtained from commercial sources.

[0041] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A flame retardant material flame retardant performance simulation detection system, characterized in that: include: Modular test chamber, used to accommodate the flame retardant material samples to be tested, with a removable liner and interchangeable detection modules inside the chamber to accommodate flame retardant materials of different specifications and application environments; A high-pressure flame spraying device, comprising a fuel and combustion-supporting gas supply system, an adjustable mixer and a nozzle, wherein the nozzle can achieve accurate output of high-pressure flame while adjusting the spray angle, pressure, temperature and flow rate; A dynamic gas circulation system, which includes a variable speed fan, an adjustable flow valve and a pressure control module, is used to form a continuous and uniform high-pressure airflow in the test chamber to simulate the combustion environment at the fire scene; Multi-parameter sensor module, including temperature, pressure, airflow velocity sensors and smoke composition detection devices arranged in the test chamber, and equipped with infrared thermal imaging devices to achieve real-time monitoring of the flame and sample surface status; The central control unit is connected to the above modules through a high-speed data bus, collects and processes sensor data in real time, and outputs adjustment signals according to the preset control strategy to perform closed-loop adaptive control of the high-pressure flamethrower and the dynamic gas circulation system; The simulation analysis platform, based on the preset numerical model, compares the real-time collected data with the model parameters, and conducts a comprehensive analysis of the combustion characteristics and heat conduction behavior of the sample through numerical simulation methods, providing a theoretical basis for the quantitative evaluation of flame retardant properties.

2. The flame retardant performance simulation detection system of flame retardant materials according to claim 1, characterized in that: The high-pressure flame spraying device adopts multi-stage fuel gas mixing technology and is equipped with a precision flow regulator and a temperature control module. It can achieve fine control of flame spraying pressure, temperature and flow rate by adjusting the mixing ratio of fuel and combustion-supporting gas and nozzle parameters, thereby truly reproducing the high-pressure combustion conditions in the fire scene.

3. The flame retardant performance simulation detection system of flame retardant materials according to claim 2, characterized in that: The dynamic gas circulation system utilizes a variable speed fan and an adjustable flow valve to work together, monitors the airflow pressure in the test chamber in real time through a closed-loop pressure control module, and automatically adjusts the fan speed and valve opening so that the test chamber always maintains a preset high-pressure airflow state to simulate the dynamic pressure changes caused by the closed environment and external disturbances at a fire scene.

4. The flame retardant performance simulation detection system of flame retardant materials according to claim 3, characterized in that: The multi-parameter sensor module transmits data in real time to the central control unit, and the infrared thermal imaging device is used to capture the surface temperature distribution of the sample and the changes in the flame morphology, ensuring the accurate collection of various parameters in the dynamic environment of the fire scene.

5. The flame retardant performance simulation detection system of flame retardant materials according to claim 4, characterized in that: The central control unit adopts a closed-loop adaptive control strategy to perform real-time regulation of the high-pressure flame spraying device and the dynamic gas circulation system. The control strategy includes: S1, real-time acquisition of temperature, pressure and airflow velocity signals from the multi-parameter sensor module; S2. According to the preset fire condition parameters and test requirements, the collected signal is compared with the target parameters to determine the control error; S3. Automatically adjust the system output parameters according to the control error, so that the working state of the high-pressure flame spraying device and the dynamic gas circulation system is always maintained within the preset parameter range, ensuring that the flame and airflow act on the sample stably and evenly during the test.

6. The flame retardant performance simulation detection system of flame retardant materials according to claim 5, characterized in that: The modular test chamber adopts a standardized module structure, the lining and the detection module are replaceable, and multiple data collection points and observation windows are arranged on the wall of the chamber, which is convenient for simulation detection and on-site observation of flame-retardant materials of different specifications, and simplifies system maintenance and subsequent upgrades.

7. The flame retardant performance simulation detection system of flame retardant materials according to claim 6, characterized in that: The simulation analysis platform integrates the real-time data collected by the central control unit with the pre-established fire dynamics numerical model, and calculates the temperature field distribution, heat transfer rate and combustion evolution process of the sample through numerical simulation and data fitting methods, providing data support and theoretical basis for the quantitative evaluation of flame retardant performance.

8. The flame retardant performance simulation detection system of flame retardant materials according to claim 7, characterized in that: The high-pressure flamethrower, dynamic gas circulation system, multi-parameter sensor module and central control unit constitute an overall linkage control system. Information sharing and synchronous adjustment are achieved between the modules through a high-speed data bus, so that flame spraying, airflow control and data collection can be coordinated under multi-variable, real-time closed-loop feedback to accurately reproduce the combustion and heat conduction characteristics of flame retardant materials under extreme conditions in a fire scene.

9. The flame retardant performance simulation detection system of flame retardant materials according to claim 8, characterized in that: The following steps are involved: A1. Install the flame retardant material sample to be tested in the modular test chamber and seal the chamber; A2. Start the dynamic gas circulation system to establish a preset high-pressure airflow environment in the test chamber; A3. Start the high-pressure flame spraying device to spray flames on the sample; A4. Use the multi-parameter sensor module to collect temperature, pressure, air flow velocity and smoke composition data in real time during the test; A5. The central control unit automatically adjusts the working parameters of the high-pressure flame spraying device and the dynamic gas circulation system according to the collected data; A6. Transmit real-time data to the simulation analysis platform and calculate the temperature field distribution, combustion characteristics and heat transfer behavior of the sample through numerical simulation methods; A7. According to the simulation results and the temperature change and combustion delay index of the sample within the specified fire resistance time, the flame retardant performance of the flame retardant material is quantitatively evaluated, and a test report is generated based on the evaluation results.

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