Multi-module t-shaped dynamic coupling global flame envelope combustion simulation device and method

Abstract

The application discloses a multi-module T-shaped dynamic coupling global flame envelope combustion simulation device and method, relates to the cross field of civil engineering and mechanical control technology, and comprises a T-shaped global flame envelope combustion system, an AI intelligent iterative control system, a modularized pry integrated system, a multi-modal fire field monitoring system and a multi-dimensional wind field simulation system; the T-shaped global flame envelope combustion system comprises a horizontal linear combustion module and a vertical annular combustion module; the horizontal module comprises a plurality of linearly arranged cuboid combustion vehicles; the vertical module adopts a multi-layer detachable annular steel pipe; each layer is provided with a plurality of adjustable angle fire outlets; and the three-dimensional space of the fire receiving structure can realize dynamic envelope of the flame; the AI intelligent iterative control system is embedded with an LSTM model to realize real-time optimization of combustion parameters; the modularized pry realizes convenient installation and deployment on all terrains; the multi-modal monitoring accurately tracks the real-time state of the wind-fire coupling environment field; and the application provides a real fire field high-fidelity reproduction platform for bridge cable system fire research.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of civil engineering and mechanical control technology, more particularly to a multi-module T-shaped dynamic coupling global flame envelope combustion simulation device and method. BACKGROUND

[0002] The complexity and destructiveness of fire accidents pose a major challenge to the safety of bridge infrastructure, and the research on the thermal damage evolution mechanism of large-scale engineering structures of bridges in real fire has long been limited by the lack of experimental techniques. The existing technology is mostly based on small-scale closed space static uniform temperature loading in laboratory environment, which is difficult to reproduce the multi-physical field coupling effects of dynamic flame spread, non-uniform temperature field distribution and environmental wind field in real fire, resulting in insufficient accuracy of fire resistance performance evaluation of bridge cable system fireproof materials and cable fire failure prediction, which seriously restricts the scientificity of bridge cable-bearing system fire resistance design and post-disaster evaluation. Especially in large-span transportation infrastructure such as suspension bridges, when a fire accident occurs, the flame often spreads upwards from the lowest point of the main cable (≥10m), forming a full-wrapped combustion of the main cable bottom, the fire-facing surface and the suspender, and the flame height is usually not less than 10 meters. In view of the above situation, the traditional fire simulation equipment has the following key technical bottlenecks: firstly, in the study of cable failure mechanism, in order to reduce the size effect, the test needs to use full-size or large-size specimens (fire burning space is more than 5m×3m). But the flame height limit generated by the most advanced burner equipment is only 1.5 meters, which cannot form a real fire burning fire field that simultaneously envelopes the main cable and suspender of the suspension bridge. Secondly, the fixed combustion system is limited by space layout and energy supply mode, and the generated flame cannot be controlled and can only form a uniform spatial temperature field in a limited closed space, which cannot construct a three-dimensional dynamic combustion shape of the fire plume. The mobile device also often has problems such as insufficient gas stability, imperfect emergency protection, etc., which makes it difficult to support high-power, safe and reliable real fire test. Thirdly, the influence of environmental factors on fire evolution has long been ignored, such as the wind direction and wind speed in bridge fire, which are the key factors affecting the flame inclination angle. The existing technology lacks the dynamic simulation capability of flame and fire field under the influence of environmental wind, which causes the fire test scene to be disconnected from the actual fire accident, and seriously restricts the progress of scientific research on bridge cable-bearing system fire resistance design and post-disaster evaluation. In addition, the contradiction between safety and test authenticity further aggravates the technical bottleneck. In order to avoid risks, the traditional method often sacrifices the combustion intensity, which makes the test data unable to effectively guide the engineering protection; and the high-energy combustion equipment has explosion hazards and cannot be accurately and real-time controlled due to monitoring lag and rigid control logic.

[0003] In view of the above problems, it is urgent to develop a high-fidelity non-uniform fire accident scene simulation device and technology that breaks through the scale limitation of bridge fire, integrates environmental wind field, and forms a dynamic controllable three-dimensional flame wrapping of large-scale specimens. SUMMARY

[0004] Therefore, the application provides a multi-module T-shaped dynamic coupling global flame envelope combustion simulation device and method.

[0005] To achieve the above object, the application adopts the following technical scheme: a multi-module T-shaped dynamic coupling global flame envelope combustion simulation device, comprising a T-shaped global flame envelope combustion system, an AI intelligent iterative control system, a modular movable skid-mounted integrated system, a multi-modal fire field environment monitoring system, and a multi-dimensional wind field simulation system; the T-shaped global flame envelope combustion system is used to simulate a real fire three-dimensional dynamic flame envelope combustion mode; the modular movable skid-mounted integrated system is used to provide a flow-adjustable gas for the T-shaped global flame envelope combustion system; the multi-dimensional wind field simulation system is used to simulate complex wind field conditions; the multi-modal fire field environment monitoring system is used to monitor flame mode, temperature field, and wind field data; and the AI intelligent iterative control system is used to real-time fuse flame mode, temperature field, and wind field data through an LSTM model, dynamically optimize gas flow and complex wind field conditions, and reproduce a three-dimensional dynamic flame envelope combustion state and a non-uniform temperature field in a real fire scene.

[0006] Preferably, the T-shaped global flame envelope combustion system comprises a horizontal linear combustion module and a vertical ring-shaped combustion module; the horizontal linear combustion module and the vertical ring-shaped combustion module form a T-shaped combustion structure to simulate a real fire three-dimensional dynamic flame envelope combustion mode.

[0007] Preferably, the horizontal linear combustion module comprises a plurality of cuboid combustion vehicles arranged independently and linearly; each cuboid combustion vehicle is provided with a multi-directional flame jetting unit capable of forming a three-dimensional flame gradient mode; and a gas input interface on each cuboid combustion vehicle is supplied with gas through an independent and flow-adjustable gas pipeline in the movable skid-mounted integrated system.

[0008] Preferably, the vertical ring-shaped combustion module comprises a plurality of layers of detachable ring-shaped steel pipes; adjacent ring-shaped steel pipes are connected through detachable support columns; each layer of ring-shaped steel pipes is uniformly provided with a plurality of adjustable-angle flame outlets; the adjustable-angle flame outlets are supplied with gas through symmetrically arranged double-gas-branch pipes on the ring-shaped steel pipes; any two symmetrically distributed flame outlets in each layer of ring-shaped steel pipes are provided with high-energy pulse electric spark igniters; each double-gas-branch pipe is supplied with gas through an independent and flow-adjustable gas pipeline in the movable skid-mounted integrated system.

[0009] Preferably, the adjustable angle fire port comprises an air inlet end short tube and a fire outlet end short tube connected by an open hollow hemispherical universal hinge mechanism, the universal hinge mechanism comprises a hollow ball with a guide channel and a hemispherical socket matched with the hollow ball, which can realize the 0-90 degree inclination angle adjustment of the fire outlet end short tube, the air inlet end short tube is communicated with the annular steel pipe through a variable diameter transition pipe; after the gas enters the annular steel pipe, it is accelerated into the universal hinge mechanism through the variable diameter transition pipe, and is sprayed out from the fire outlet end short tube and ignited, forming a flame with adjustable fire direction.

[0010] Preferably, the annular steel pipe is integrated with a flange quick release interface along its symmetry axis direction, the flange quick release interface does not interfere with the adjustable angle fire port and the double air inlet branch pipe, the flange quick release interface realizes the axial separation and recombination of the annular steel pipe through bolt connection, after disassembly, two half annular burner units can be formed, and each half annular burner unit retains independent gas supply passage and ignition control, supporting the true fire loading of the half circle fire scene; the detachable support column is configured with an internal thread quick connector at both ends for connecting adjacent two layers of annular steel pipes.

[0011] Preferably, the modular movable skid integrated system comprises a first skid unit and a second skid unit; the first skid unit is integrated with a gas cylinder or fuel tank, a vaporization furnace, an explosion-proof fire extinguishing device, an explosion-proof lighting device one and a gas pipeline for communicating with the T-shaped global flame envelope combustion system; the second skid unit is integrated with a power distribution cabinet, an electrical control cabinet and a frequency converter.

[0012] Preferably, the explosion-proof fire extinguishing device comprises a linkage fire extinguishing system composed of an explosion-proof control cabinet, an explosion-proof fan, a combustible gas detector and a plurality of suspended ultra-fine dry powder fire extinguishers, and the explosion-proof lighting device one is electrically connected with the explosion-proof control cabinet; the power distribution cabinet is used to provide power supply; the electrical control cabinet is built-in PLC controller and communication module, used to realize the coordinated control of each system; the gas pipeline comprises a main pipeline provided with a multi-channel converging interface, one end of the main pipeline is connected with the gas cylinder or fuel tank through a high-pressure hose and an explosion-proof quick connector, the other end of the main pipeline away from the gas cylinder or fuel tank is sequentially connected with the vaporization furnace, the gas main shut-off valve, the intelligent pressure feedback reducing valve and the intelligent valve positioner integrated with the liquid crystal screen, the input end of the intelligent valve positioner is communicated with the pressure stabilizing branch of the air compressor through the filter, and the output end of the intelligent valve positioner is communicated with the T-shaped global flame envelope combustion system through the corrugated flame arrester.

[0013] Preferably, the multi-dimensional wind field simulation system comprises a plurality of high-dynamic axial flow fans, which are distributed in a matrix topology, and each high-dynamic axial flow fan is equipped with an independent frequency converter. The multi-modal fire field environment monitoring system comprises a fire field panoramic video acquisition unit, a fire field space temperature field monitoring unit, and a wind speed monitoring unit. The fire field panoramic video acquisition unit captures visible light and thermal radiation images of a three-dimensional fire gradient form fire field in real time through a fire field panoramic camera to monitor a fire field panoramic video. The fire field space temperature field monitoring unit is composed of a distributed thermocouple and an infrared thermometer, which is used to collect fire field space temperature distribution data in real time to generate a three-dimensional temperature field model. The wind speed monitoring unit is composed of an ultrasonic anemometer and a pressure sensor, which is used to monitor wind speed, wind direction, and wind pressure data of the simulated wind field of the multi-dimensional wind field simulation system in real time. The data monitored by the multi-modal fire field environment monitoring system is transmitted to the AI intelligent iterative control system of the computer end in real time through a communication network.

[0014] The application also provides an implementation method of the above-mentioned multi-module T-shaped dynamic coupling global flame envelope combustion simulation device, comprising the following steps: S1, transporting the first pry-mounted unit, the second pry-mounted unit, the horizontal linear combustion module, the vertical annular combustion module, the multi-modal fire environment monitoring system and the multi-dimensional wind field simulation system to the target site and moving to the preset position; S2, placing the vertical annular combustion module on the ground and installing the horizontal linear combustion module below the counterforce frame, so that the vertical annular combustion module and the horizontal linear combustion module are arranged in a T shape; installing the T-shaped test piece on the counterforce frame, so that the vertical part of the T-shaped test piece is arranged at the center of the vertical annular combustion module and the horizontal part of the T-shaped test piece is arranged directly above the horizontal linear combustion module; S3, starting the explosion-proof fire extinguishing device in the first pry-mounted unit, monitoring the gas concentration in the pry-mounted unit in real time and keeping the whole process running; if the combustible gas detector detects that the gas concentration in the first pry-mounted unit is greater than or equal to 25% LEL at any time, immediately starting the suspended ultra-fine dry powder fire extinguisher and cutting off the power supply to stop the test; S4, connecting the gas pipeline of the first pry-mounted unit to each gas inlet of the horizontal linear combustion module and each double-inlet branch pipe of the vertical annular combustion module through quick flanges, connecting the output end of the power distribution cabinet of the second pry-mounted unit to the power supply port of the high-dynamic axial flow fan through cables, and connecting the communication interface of the electrical control cabinet to the PLC controllers of the horizontal linear combustion module, the vertical annular combustion module and the high-dynamic axial flow fan; S5, inputting the target fire scene parameters into the AI intelligent iterative control system to generate an initial control instruction set; S6, opening the gas supply valve, adjusting the gas flow through the intelligent valve positioner of the computer terminal of the AI intelligent iterative control system, and synchronously adjusting the wind speed of the high-dynamic axial flow fan through the frequency converter; S7, triggering the high-energy pulse spark igniter of the horizontal linear combustion module and the vertical annular combustion module to ignite, activating the multi-modal fire environment monitoring system, and collecting and feeding back the flame shape, temperature field and wind field data to the AI intelligent iterative control system in real time; S8, based on the deviation of real-time data and preset parameters, the AI intelligent iterative control system iteratively optimizes the opening degree of the intelligent valve positioner and the wind speed of the high-dynamic axial flow fan through the LSTM model to reproduce the real three-dimensional dynamic flame envelope combustion mode; S9, stopping the test, closing the gas valve and stopping the high-dynamic axial flow fan; and S10, storing the whole-cycle test data package.

[0015] Through the above technical solution, the application provides an operation method of a complete multi-module T-shaped dynamic coupling global flame envelope combustion simulation device, which organically combines the installation, debugging, operation, monitoring and data recording of the equipment, forms a standardized operation process, is convenient for operators to quickly master and execute, and improves the standardization and repeatability of the test.

[0016] Compared with the prior art, the application provides a multi-module T-shaped dynamic coupling global flame envelope combustion simulation device and method, which has the following beneficial effects:

[0017] 1. High-fidelity fire scene simulation: The coordinated work of the horizontal linear combustion module and the vertical ring-shaped combustion module can realize dynamic envelope of the flame in a three-dimensional space, simulate the multi-dimensional thermal erosion characteristics of the flame in a real fire, avoid the problem that the flame height of existing combustion equipment is difficult to break through 1.5m, and skillfully design a horizontal linear combustion module and a vertical ring-shaped combustion module combined combustion equipment, which can simulate a T-shaped flame envelope combustion scene of the main cable and the suspender of a suspension bridge being on fire at the same time in a fire accident, truly restore the natural three-dimensional gradient flame licking and wrapping effect of the cable system of the suspension bridge under the influence of environmental wind in a fire accident, and accurately reproduce the key features of non-uniform temperature distribution in a real fire.

[0018] 2. Controllable and adjustable flame shape: The T-shaped global flame envelope combustion system can realize dynamic regulation of the flame height and the inclination angle in the whole cycle under the control of the AI intelligent iterative control system. The AI intelligent iterative control system can also correct and adjust the combustion flame deviating from the target state according to the flame monitoring data fed back by the multi-modal fire field monitoring system.

[0019] 3. Improved safety and reliability: The explosion-proof fire extinguishing device realizes the whole-process automation disposal of explosion prevention, fire extinguishing and risk removal. When the combustible gas detector detects that the gas concentration exceeds the standard, the explosion-proof fan can be started to forcibly exhaust air, and the suspension type ultra-fine dry powder fire extinguisher can be triggered to release dry powder, effectively reducing the fire risk. The explosion-proof control cabinet is connected with the touch panel, which can display the gas concentration, fan state and fire extinguisher pressure data in real time, so that the operator can know the equipment operation state in time, and the potential safety hazards can be found and handled in time. When the combustible gas detector alarms or the suspension type ultra-fine dry powder fire extinguisher starts, the explosion-proof lighting device automatically switches the lighting mode to the emergency high-light state, ensuring sufficient lighting on the spot in an emergency, so that the operator can perform emergency treatment.

[0020] 4. Enhanced efficiency and flexibility: The modular mobile integrated system is easy to install and deploy on all terrains, improving the mobility and adaptability of the equipment, and quickly responding to the test requirements of different sites, reducing the test preparation time and cost; It provides a complete operation method, which organically combines the installation, debugging, operation, monitoring and data recording of the equipment, forming a standardized operation process, which is easy for operators to quickly master and execute, improving the standardization and repeatability of the test. By replacing the detachable support column of different heights, the height of the vertical ring-shaped combustion module can be adjusted to adapt to different height fire simulation requirements. Through the flange quick release interface of the ring-shaped steel pipe, the ring-shaped steel pipe can be separated into two half-circular ring-shaped steel pipes, which can support the real fire loading of the half-circular fire scene, and further improve the universality and adaptability of the equipment.

[0021] 5. Complete data recording and analysis: At the end of the test, the system can store the full-cycle test data package, including flame shape dynamic sequence, temperature field distribution and matrix wind field regulation log, providing complete and accurate data support for fire scene reproduction analysis, which is convenient for researchers to analyze and study the fire process; The multi-modal fire environment monitoring system can accurately track the real-time state of the wind-fire coupled environment field and feed back the data to the AI intelligent iterative control system in real time. The system dynamically optimizes based on the deviation between real-time data and preset parameters to ensure accurate control and reproduction of test conditions.

[0022] 6. Innovation and application value: The invention combines horizontal linear combustion module and vertical ring-shaped combustion module, real-time feedback control algorithm and modular safety design, breaking through the limitations of traditional fire simulation technology, providing an innovative test platform for complex structure fire research; The device and method are particularly suitable for fire research of large-span transportation infrastructure such as bridge cable systems, and can provide scientific basis for engineering fire resistance design, fire risk assessment and post-disaster repair, which has important practical application value. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and those skilled in the art can obtain other drawings according to the provided drawings without creative labor.

[0024] Figure 1 The overall structure schematic diagram of the multi-module T-shaped dynamic coupling global flame envelope combustion simulation device provided by the embodiment of the present application.

[0025] Figure 2 The structure schematic diagram of the cuboid combustion vehicle provided by the embodiment of the present application.

[0026] Figure 3 For Figure 2 Enlarged schematic view at A in Figure 1.

[0027] Figure 4 Structure schematic view of vertical annular combustion module of the embodiment of the present application.

[0028] Figure 5 Structure schematic view of the first pry unit provided by the embodiment of the present application.

[0029] Figure 6 Structure schematic view of the second pry unit provided by the embodiment of the present application.

[0030] Figure 7 Structure schematic view of the gas pipeline provided by the embodiment of the present application.

[0031] Wherein: 1, multi-dimensional wind field simulation system; 2a, horizontal linear combustion module; 2b, vertical annular combustion module; 3, first pry unit; 4, second pry unit; 5, gas pipeline; 101, high dynamic axial flow fan; 102, frequency converter; 103, universal locking roller group; 201, high-temperature-resistant alloy steel pipe; 202, short joint type stainless steel flame spraying pipe; 203, gas input interface; 204, self-suction air supply interface; 205, high-energy pulse electric spark igniter; 206, annular steel pipe; 207, adjustable angle flame spout; 208, double-inlet branch pipe; 209, hollow sphere; 210, semispherical socket; 211, flange type quick-release interface; 212, detachable support column; 213, variable-diameter transition pipe; 301, gas cylinder or fuel tank; 302, vaporization furnace; 303, explosion-proof control cabinet; 304, explosion-proof fan; 305, combustible gas detector; 306, suspension type ultra-fine dry powder fire extinguisher; 307, container; 308, explosion-proof louver; 309, fire extinguisher annular hoisting support; 310, touch panel; 311, LED explosion-proof lamp group; 312, explosion-proof junction box; 401, power distribution cabinet; 402, electrical control cabinet; 403, explosion-proof lighting device two; 501, main pipeline; 502, gas main shut-off valve; 503, intelligent pressure reducing valve; 504, intelligent valve positioner; 505, filter; 506, corrugated flame arrester. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0033] Reference is made to the drawingsFigure 1 The embodiment of the present application discloses a multi-module T-shaped dynamic coupling global flame envelope combustion simulation device, which comprises a T-shaped global flame envelope combustion system, an AI intelligent iterative control system, a modular movable skid-mounted integrated system, a multi-modal fire field environment monitoring system and a multi-dimensional wind field simulation system 1; the T-shaped global flame envelope combustion system is used to simulate a T-shaped dynamic thermal erosion three-dimensional wrapping combustion mode; the modular movable skid-mounted integrated system is used to provide the T-shaped global flame envelope combustion system with flow-adjustable fuel gas; the multi-dimensional wind field simulation system 1 is used to simulate complex wind field conditions; the multi-modal fire field environment monitoring system is used to monitor flame mode, temperature field and wind field data; the AI intelligent iterative control system fuses flame mode, temperature field and wind field data in real time through an LSTM model well known to those skilled in the art, dynamically optimizes fuel gas flow and complex wind field conditions, and reproduces a three-dimensional dynamic flame envelope combustion state and a non-uniform temperature field in a real fire scene.

[0034] Referring to the accompanying drawings Figure 2 - the accompanying drawings Figure 4 The T-shaped global flame envelope combustion system comprises a horizontal linear combustion module 2a and a vertical annular combustion module 2b; the horizontal linear combustion module 2a comprises a plurality of independent cuboid combustion vehicles arranged in a linear array; each cuboid combustion vehicle is integrated with a plurality of groups of parallel and equidistant high-temperature-resistant alloy steel pipes 201 on the top; each group of high-temperature-resistant alloy steel pipes 201 is provided with a plurality of short-section stainless steel flame spraying pipes 202 in the axial direction; the short-section stainless steel flame spraying pipes 202 are vertically arrayed and communicate with the high-temperature-resistant alloy steel pipes 201; the high-temperature-resistant alloy steel pipes 201 and the short-section stainless steel flame spraying pipes 202 form a multi-directional flame spraying unit; a high-energy pulse electric spark igniter 205 is arranged at the outer edge intersection node of each group of high-temperature-resistant alloy steel pipes 201; the high-energy pulse electric spark igniter 205 is synchronously controlled by an AI intelligent iterative control system synchronous control circuit to realize synchronous ignition of the flame; a gas input interface 203 and a self-suction air supply interface 204 are arranged on the bottom of one side wall of the cuboid combustion vehicle; a multi-way equal distribution branch pipe is connected to the middle of each high-temperature-resistant alloy steel pipe 201; the multi-way equal distribution branch pipes are connected in parallel and then communicate with the gas input interface 203; the gas input interface 203 is supplied with gas through the independent and flow-adjustable gas pipeline 5 in the movable skid-mounted integrated system; the self-suction air supply interface 204 forms a rectangular gradually expanding flow channel to the inside of the cuboid combustion vehicle to realize natural air supply through the negative pressure self-suction principle; universal locking roller groups 103 are installed on the bottom of the cuboid combustion vehicle to realize free and convenient movement of the equipment.

[0035] The vertical annular combustion module 2b comprises a plurality of layers of longitudinally connected detachable annular steel pipes 206, adjacent annular steel pipes 206 are connected by detachable support columns 212, each layer of annular steel pipes 206 uniformly distributes a plurality of adjustable angle fire ports 207, the adjustable angle fire ports 207 are supplied with gas through symmetrically arranged double gas inlet branch pipes 208 on the annular steel pipes 206, high-energy pulse spark igniters 205 are arranged at any two symmetrically distributed fire ports in each layer of annular steel pipes 206, and the AI intelligent iterative control system synchronous control circuit is used to realize synchronous ignition of the flames of each layer, and each double gas inlet branch pipe 208 is supplied with gas through the movable pry integrated system.

[0036] The adjustable angle fire port 207 comprises a gas inlet end short pipe and a fire outlet end short pipe, the gas inlet end short pipe and the fire outlet end short pipe are connected through an open hollow hemispherical universal hinge mechanism, the universal hinge mechanism comprises a hollow ball body 209 in which a flow guide channel is embedded and a hemispherical socket 210 matched with the hollow ball body 209, and can realize 0-90 degree inclination adjustment of the fire outlet end short pipe, the gas inlet end short pipe is communicated with the annular steel pipe 206 through a variable-diameter transition pipe 213, the small-diameter end of the variable-diameter transition pipe 213 is communicated with the gas inlet end short pipe, after the gas enters the annular steel pipe 206, the gas is accelerated into the universal hinge mechanism through the variable-diameter transition pipe 213, and is sprayed out from the fire outlet end short pipe and ignited, thereby forming a flame with adjustable fire spraying direction.

[0037] The annular steel pipe 206 is integrated with a flange type quick release interface 211 along the symmetric axis direction of the annular steel pipe 206, the flange type quick release interface 211 does not interfere with the adjustable angle fire port 207 and the double gas inlet branch pipe 208, the flange type quick release interface 211 realizes axial separation and recombination of the annular steel pipe 206 through bolt connection, after disassembly, two half annular combustor units can be formed, and each half annular combustor unit retains independent gas supply passage and ignition control, and supports true fire loading in a half circle fire scene; the detachable support column 212 is configured with an internal thread quick connector at both ends for connecting adjacent two layers of annular steel pipes 206, and by replacing detachable support columns 212 with different heights, the height of the vertical annular combustion module 2b can be adjusted.

[0038] Referring to the accompanying drawings Figure 5 and the accompanying drawings Figure 6, the modular movable prying integrated system comprises two independent prying units, i.e. a first prying unit 3 and a second prying unit 4; the first prying unit 3 is internally integrated with a gas cylinder or fuel tank 301, a vaporizing furnace 302, an explosion-proof fire extinguishing device, an explosion-proof lighting device I and a gas pipeline 5; the gas cylinder or fuel tank 301 for storing combustible gas is connected to the vaporizing furnace 302 to convert liquid fuel into gaseous fuel; the gas pipeline 5 comprises high-pressure pipelines, valves and safety devices to realize the stability and safety of fuel delivery; the explosion-proof fire extinguishing device ensures safe ventilation in the first prying unit 3 to prevent industrial explosion and timely extinguish fire; the second prying unit 4 is internally integrated with a power distribution cabinet 401, an electrical control cabinet 402, a frequency converter 102 and an explosion-proof lighting device II 403; the explosion-proof lighting device II 403 is electrically connected to the electrical control cabinet 402; the power distribution cabinet 401 is used to provide power supply for the entire device; the electrical control cabinet 402 is internally provided with a PLC controller and a communication module to realize coordinated control of various systems; the two prying units are designed with standardized interfaces to be quickly connected and realize seamless transmission of fuel, power, wind power and data; meanwhile, the two prying units are both equipped with multi-degree-of-freedom universal locking roller groups 103 to facilitate transportation and fixation.

[0039] The explosion-proof fire extinguishing device in the first prying unit 3 comprises a linkage fire extinguishing system composed of an explosion-proof control cabinet 303, two explosion-proof fans 304, three combustible gas detectors 305 and a plurality of suspended ultra-fine dry powder fire extinguishers 306; the explosion-proof fans 304 are symmetrically arranged at the bottom of the inner wall of a container 307 in the first prying unit 3 and are electrically connected to the explosion-proof control cabinet 303; explosion-proof louvers 308 are installed at the exhaust port of the container 307; one combustible gas detector 305 is vertically suspended 50-100 cm above the flange joint of the gas pipeline 5; the other two combustible gas detectors 305 are respectively arranged at the middle part of the top beam of the container above the gas cylinder or fuel tank 301; the three combustible gas detectors 305 are all electrically connected to the explosion-proof control cabinet 303; the suspended ultra-fine dry powder fire extinguisher 306 is suspended and fixed on a fire extinguisher annular hoisting support 309 on the ceiling of the container 307; the height from the bottom of the fire extinguisher annular hoisting support 309 to the bottom of the container 307 is 0.7 times the height of the container 307; the suspended ultra-fine dry powder fire extinguisher 306 is driven by a pneumatic electromagnetic valve and is connected to the explosion-proof control cabinet 303; the explosion-proof fans 304, the combustible gas detectors 305 and the suspended ultra-fine dry powder fire extinguishers 306 are all electrically connected to the explosion-proof control cabinet 303; the explosion-proof control cabinet 303 is connected with a touch panel 310 installed on the outer wall of the container 307; the touch panel 310 displays real-time data of gas concentration, fan state and fire extinguisher pressure; when any combustible gas detector 305 detects that the gas concentration exceeds the standard, the explosion-proof control cabinet 303 starts the explosion-proof fan 304 to forcibly exhaust air, and simultaneously triggers the pneumatic electromagnetic valve switch to activate the suspended ultra-fine dry powder fire extinguisher 306 in the corresponding area to release dry powder, thereby realizing automatic disposal of the whole process of explosion prevention, fire extinguishing and risk removal.

[0040] The explosion-proof lighting device comprises an LED explosion-proof lamp group 311 with an explosion-proof grade greater than or equal to ExdIIBT4, which is symmetrically installed on the ceiling of the container 307. Each explosion-proof lamp of the LED explosion-proof lamp group 311 is connected in parallel to the explosion-proof control cabinet 303 through the explosion-proof junction box 312. The lighting switch control module of the LED explosion-proof lamp group 311 is integrated in the touch panel 310. When the combustible gas detector 305 alarms or the suspension type ultra-fine powder extinguisher 306 is started, the touch panel 310 automatically switches the lighting mode to the emergency high-brightness state.

[0041] The explosion-proof control cabinet 303, the explosion-proof fan 304, the combustible gas detector 305, the suspension type ultra-fine powder extinguisher 306, the container 307, the explosion-proof louver 308, the extinguisher annular hoisting support 309, the container top cross beam, the LED explosion-proof lamp group 311, and other structures not described in detail in the embodiment all adopt existing products or structures known to those skilled in the art. The connection or control mode between them also adopts the existing connection or control mode known to those skilled in the art.

[0042] The number of each device in the embodiment is one preferred embodiment of the present application, and other number configurations are also within the protection scope of the present application.

[0043] Referring to FIG. 1, Figure 7 The gas pipeline 5 comprises a main pipeline 501 provided with a multi-channel converging interface. One end of the main pipeline 501 is connected to a gas cylinder or fuel tank 301 storing fuel through a high-pressure hose and an explosion-proof quick connector. The other end of the main pipeline 501 away from the gas cylinder or fuel tank 301 is sequentially connected to a vaporization furnace 302 and a gas main shutoff valve 502, and then is divided into several branch lines. Each branch line is sequentially connected to an intelligent pressure reducing valve 503 with pressure feedback and an intelligent valve positioner 504 integrated with a liquid crystal screen. The input end of the intelligent valve positioner 504 is connected to a pressure stabilizing branch of an existing air compressor known to those skilled in the art through a filter 505. The output end of the intelligent valve positioner 504 is connected to each gas interface of the horizontal linear combustion module 2a and the vertical annular combustion module 2b through a corrugated flame arrestor 506. The intelligent valve positioner 504 is connected to an AI intelligent iterative control system, which feeds back valve opening degree information to the AI intelligent iterative control system in real time. The AI intelligent iterative control system generates valve opening degree adjustment instructions for the next period based on preset target temperature parameters and returns the instructions to the intelligent valve positioner 504 for execution of opening degree adjustment, forming a closed-loop control link of dynamic matching of gas flow and temperature field. The AI intelligent iterative control system can control the intelligent pressure reducing valve 503 to cut off the gas delivery of the gas pipeline 5. Each gas interface of the horizontal linear combustion module 2a and the vertical annular combustion module 2b corresponds to an independent intelligent pressure reducing valve 503, an intelligent valve positioner 504, and a corrugated flame arrestor 506.

[0044] The multi-modal fire scene environment monitoring system comprises a fire scene panoramic video acquisition unit, a fire scene space temperature field monitoring unit and a wind speed monitoring unit. The panoramic video acquisition unit adopts a high-resolution camera and an infrared imaging device to capture visible light and thermal radiation images of the fire scene in real time and monitor the panoramic video of the fire scene. The temperature field monitoring unit is composed of a distributed thermocouple and an infrared thermometer for real-time acquisition of fire scene space temperature distribution data and generation of a three-dimensional temperature field model. The wind speed monitoring unit is composed of an ultrasonic anemometer and a pressure sensor for real-time monitoring of wind field wind speed, wind direction and wind pressure data. The monitoring data is transmitted in real time to an AI intelligent iterative control system on the computer end through a high-speed communication network to accurately control the test and record the whole process data, while supporting data visualization.

[0045] The multi-dimensional wind field simulation system 1 comprises a plurality of high dynamic axial flow fans 101 distributed in a matrix topology. Each fan is equipped with an independent frequency converter 102 integrated in a second skid unit 4 to realize continuous adjustment of the fan speed and precise control of the tilt angle. The fan array formed by the high dynamic axial flow fans 101 is controlled by a PLC intelligent dynamic control strategy in the AI intelligent iterative control system, which can simulate the wind field conditions under complex fire scenarios, including uniform wind field and gradient wind field. The multi-dimensional wind field simulation system 1 is connected with the ultrasonic wind speed and direction sensor and the pressure sensor in the multi-modal fire scene environment monitoring system, using existing connection methods known to those skilled in the art, for real-time monitoring of multi-dimensional parameters of the wind field and feedback of the monitoring data to the AI intelligent iterative control system. The wind field monitoring data and the preset target parameters are subjected to multi-scale error analysis and regulation to ensure accurate reproduction of the wind field conditions. The multi-dimensional wind field simulation system 1 is integrated with multi-degree-of-freedom universal locking roller groups 103 at the bottom to support all-terrain movement in various environments, and the roller locking mechanism ensures stability during wind field simulation.

[0046] The high-resolution camera and infrared imaging device, distributed thermocouple and infrared thermometer, ultrasonic anemometer and pressure sensor, high dynamic axial flow fan 101, frequency converter 102, power distribution cabinet 401, electrical control cabinet 402, intelligent pressure reducing valve 503, intelligent valve positioner 504, touch panel 310 and AI intelligent iterative control system of the present embodiment use existing products or structures known to those skilled in the art, and their connections or control methods also use existing connections or control methods known to those skilled in the art.

[0047] Other components not disclosed in detail in the present embodiment use existing products or structures known to those skilled in the art, and their connections with other structures of the present embodiment or with each other also use existing connection methods known to those skilled in the art.

[0048] The AI intelligent iterative control system is embedded with a deep spatiotemporal sequence prediction model based on a long short-term memory (LSTM) architecture, which is well known to those skilled in the art. The AI intelligent iterative control system receives real-time data from a multi-modal fire environment monitoring system, including holographic images of the fire scene, spatiotemporal distribution of temperature, and multi-dimensional wind field parameters, including wind speed vector, fan inclination angle, and fan turbulence intensity. The LSTM model is used for spatiotemporal feature fusion and nonlinear modeling of the data. The model outputs the dynamic opening optimization value of each gas control valve, as well as the target wind speed and angle control instruction of the high-dynamic axial flow fan of the multi-dimensional wind field simulation system 1. The predicted values are transmitted in real time to the PLC intelligent dynamic control system of the AI intelligent iterative control system. The PLC intelligent dynamic control system dynamically adjusts the opening of each gas control valve and the wind speed and inclination angle of each high-dynamic axial flow fan based on real-time monitoring data through the electrical control cabinet 402, ensuring accurate control and reproduction of real fire test conditions. The PLC intelligent dynamic control system and the host computer are interconnected through the OPC UA protocol, and real-time visualization of the holographic thermal map of the fire scene, the gas valve opening deviation curve, the fan operating state matrix, and the control parameter iterative process is achieved.

[0049] The embodiment provides an implementation method of the multi-module T-shaped dynamic coupling global flame envelope combustion simulation device.

[0050] Step one: transport the first pry unit 3, the second pry unit 4, the horizontal linear combustion module 2a, the vertical annular combustion module 2b, the multi-modal fire field environment monitoring system, and the multi-dimensional wind field simulation system 1 to the target site and move to the preset position; step two: place the vertical annular combustion module 2b on the ground and install the horizontal linear combustion module 2a under the counterforce frame familiar to those skilled in the art, so that the vertical annular combustion module 2b and the horizontal linear combustion module 2a are arranged in a T shape; install the T-shaped test piece on the counterforce frame, so that the vertical part of the T-shaped test piece is placed at the center of the vertical annular combustion module 2b, and the horizontal part of the T-shaped test piece is placed directly above the horizontal linear combustion module 2a; step three: start the explosion-proof fire extinguishing device in the first pry unit 3, monitor the gas concentration in the pry unit in real time, and keep running all the time; if the combustible gas detector 305 detects that the gas concentration in the first pry unit 3 is ≥25% LEL at any time, LEL is the lower explosive limit familiar to those skilled in the art, immediately start the suspended ultra-fine dry powder fire extinguisher 306 and cut off the power supply, and immediately stop the test; step four: connect the gas pipeline 5 of the first pry unit 3 to the gas inlet interfaces of the horizontal linear combustion module 2a and the vertical annular combustion module 2b through the explosion-proof quick flange, and connect the output end of the power distribution cabinet 401 of the second pry unit 4 to the power supply interfaces of the horizontal linear combustion module 2a and the vertical annular combustion module 2b and the power supply port of the high-dynamic axial flow fan 101 through the waterproof cable, and connect the communication interface of the electrical control cabinet 402 to the PLC controllers of the horizontal linear combustion module 2a, the vertical annular combustion module 2b and the high-dynamic axial flow fan 101 through the shielded twisted pair; step five: input the target fire scene parameters including flame shape, temperature gradient and wind speed vector into the AI intelligent iterative control system to generate an initial control instruction set; step six: start the gas supply valve and the air compressor, dynamically adjust the gas flow through the intelligent valve positioner 504, and synchronously drive the high-dynamic axial flow fan to generate a preset wind field; step seven: trigger the high-energy pulse spark igniter 205 of the horizontal linear combustion module 2a and the vertical annular combustion module 2b to ignite the flame, simulate the T-shaped flame envelope combustion scene of the main cable and the suspender of the suspension bridge, i.e. the T-shaped test piece of the embodiment, being simultaneously subjected to fire in a fire accident, activate the multi-modal fire field environment monitoring system, and feed the flame shape, temperature field and wind field data to the AI intelligent iterative control system in real time; step eight: based on the deviation of the real-time data and the preset parameters, the AI intelligent iterative control system iteratively optimizes the gas valve opening degree and the frequency command of the frequency converter controlling the fan speed through the LSTM model, regulates the flame size and shape, physically simulates the thermal shock and ablation effect of the flame on the measured object, and generates a spatial non-uniform temperature field; the system control instruction of the i-th cuboid combustion car at the t time step in the horizontal linear module is generated according to formula (1): (1), wherein: α iThe dynamic weight coefficient of the i-th cuboid combustion vehicle is determined by the LSTM model embedded in the AI intelligent iterative control system, and can be dynamically adjusted by a person skilled in the art according to real-time working conditions. gas,i(t) The system control instruction of the i-th cuboid combustion vehicle at the t time step; It is an existing PID control equation, K p It is a proportional gain coefficient, e i It is the error of the real-time combustion state of the i-th cuboid combustion vehicle and the target value, K i It is an integral gain coefficient, K d It is a differential gain coefficient; LSTM gas,i (T i , F i , W) is the correction term of the i-th cuboid combustion vehicle output by the LSTM model, and the input is the real-time data of the temperature T i , flame shape F i of the i-th cuboid combustion vehicle, and W is the fan speed; wherein: the total number of cuboid combustion vehicles is selected according to the size of the test specimen, and in this embodiment, i=(1, 2, 3); the system control instruction of the j-th layer of the vertical annular combustion module at the t time step is generated according to formula (2): (2), wherein: β j is the dynamic weight coefficient of the j-th layer of the vertical annular combustion module, u gas,j (t) is the system control instruction of the j-th layer of the vertical annular combustion module at the t time step; e j (t) is the error of the real-time combustion state of the j-th layer of the vertical annular combustion module and the target value; It is an existing PID control equation; LSTM gas,j (T i , F i , W) is the correction term of the j-th layer of the vertical annular combustion module output by the LSTM model, and the input is the real-time data of the temperature T j , flame shape F j of the j-th layer of the vertical annular combustion module; wherein: the number of layers of the vertical annular combustion module is selected according to the size of the test specimen, and in this embodiment, j=(1, 2, 3); the system control instruction of the frequency converter frequency is generated according to formula (3): (3), wherein γ is the dynamic weight coefficient of the frequency converter frequency, f fan (t) is the system control instruction of the frequency converter frequency; It is an existing PID control equation; LSTM fan(W, θ) is the correction term of the frequency converter frequency output by the LSTM model, the input is the fan wind speed and the fan inclination angle θ; Step nine: when the test is terminated, the AI intelligent iterative control system closes the gas main valve and stops the fan running; Step ten: store the full-cycle test data package, including the flame shape dynamic sequence, temperature field distribution and matrix wind field regulation log, for fire scene reproduction analysis.

[0051] The device disclosed in the embodiments of the present specification corresponds to the method disclosed in the embodiments, and the relevant parts are described in the method part.

[0052] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-module T-shaped dynamic coupled global flame envelope combustion simulation apparatus, characterized in that, The T-shaped global flame envelope combustion system, the AI intelligent iterative control system, the modular movable skid-mounted integrated system, the multi-modal fire field environment monitoring system and the multi-dimensional wind field simulation system are used to simulate the three-dimensional dynamic flame envelope combustion mode of a real fire. The modular movable skid-mounted integrated system is used to provide the T-shaped global flame envelope combustion system with adjustable gas flow, the multi-dimensional wind field simulation system is used to simulate complex wind field conditions, the multi-modal fire field environment monitoring system is used to monitor flame shape, temperature field and wind field data, the AI intelligent iterative control system is used to real-time fuse flame shape, temperature field and wind field data through an LSTM model, dynamically optimize gas flow and complex wind field conditions, and reproduce the three-dimensional dynamic flame envelope combustion state and non-uniform temperature field in a real fire scene.

2. A multi-module T-shaped dynamic coupling global flame envelope combustion simulation device according to claim 1, characterized in that, The T-shaped global flame envelope combustion system includes a horizontal linear combustion module and a vertical ring-shaped combustion module, the horizontal linear combustion module and the vertical ring-shaped combustion module form a T-shaped combustion structure, and are used to simulate the three-dimensional dynamic flame envelope combustion mode of a real fire. The horizontal linear combustion module includes a plurality of cuboid combustion vehicles arranged in a linear arrangement, each of the cuboid combustion vehicles is provided with a multi-directional flame jetting unit capable of forming a three-dimensional flame gradient mode, and a gas input interface of each of the cuboid combustion vehicles is supplied with gas through a gas pipeline with adjustable flow rate in the movable skid-mounted integrated system. The vertical ring-shaped combustion module includes a plurality of detachable ring-shaped steel pipes, adjacent ring-shaped steel pipes are connected through detachable support columns, a plurality of adjustable angle flame outlets are uniformly arranged on each ring-shaped steel pipe, the adjustable angle flame outlets are supplied with gas through symmetrically arranged double gas inlet branch pipes on the ring-shaped steel pipe, a high-energy pulse electric spark igniter is arranged at any two symmetrically distributed flame outlets in each ring-shaped steel pipe, and each double gas inlet branch pipe is supplied with gas through a gas pipeline with adjustable flow rate in the movable skid-mounted integrated system. The adjustable angle flame outlet includes a gas inlet end short pipe and a flame jetting end short pipe, the gas inlet end short pipe and the flame jetting end short pipe are connected through an open hollow spherical hinge mechanism, the open hollow spherical hinge mechanism includes a hollow ball with a flow guide channel and a half-spherical socket matched with the hollow ball, and can realize 0-90 degree inclination angle adjustment of the flame jetting end short pipe. The gas inlet end short pipe is communicated with the ring-shaped steel pipe through a variable diameter transition pipe, gas in the ring-shaped steel pipe is accelerated into the universal hinge mechanism through the variable diameter transition pipe, and is jetted out from the flame jetting end short pipe and ignited, thereby forming a flame with adjustable jetting direction.

3. A multi-module T-shaped dynamic coupled global flame envelope combustion simulation apparatus according to claim 2, wherein, The annular steel pipe is integrated with a flange quick-release interface along the direction of its symmetry axis, the flange quick-release interface does not interfere with the adjustable-angle fire outlet and the double-inlet branch pipe, the flange quick-release interface realizes axial separation and recombination of the annular steel pipe through bolt connection, after disassembly, two half-annular burner units can be formed, each half-annular burner unit retains independent gas supply passage and ignition control, and supports true fire loading in a half-circle fire scene; the detachable support column is provided with an internal thread quick connector at both ends for connecting adjacent two layers of annular steel pipes.

4. A multi-module T-shaped dynamic coupling global flame envelope combustion simulation device according to claim 3, characterized in that, The modular movable skid-mounted integrated system comprises a first skid-mounted unit and a second skid-mounted unit; the first skid-mounted unit is integrated with a gas cylinder or fuel tank, a vaporizing furnace, an explosion-proof fire extinguishing device, an explosion-proof lighting device one and a gas pipeline for communication with a T-shaped global flame envelope combustion system; the second skid-mounted unit is integrated with a power distribution cabinet, an electrical control cabinet and a frequency converter.

5. A multi-module T-shaped dynamic coupled global flame envelope combustion simulation apparatus according to claim 4, wherein, The explosion-proof fire extinguishing device comprises a linkage fire extinguishing system composed of an explosion-proof control cabinet, an explosion-proof fan, a combustible gas detector and a plurality of suspended ultra-fine dry powder fire extinguishers, the explosion-proof lighting device one is electrically connected with the explosion-proof control cabinet; the power distribution cabinet is used for providing power supply; the electrical control cabinet is provided with a PLC controller and a communication module, and is used for realizing coordinated control of each system; the gas pipeline comprises a main pipeline provided with a multi-channel converging interface, one end of the main pipeline is connected with the gas cylinder or fuel tank through a high-pressure hose and an explosion-proof quick connector, the other end of the main pipeline away from the gas cylinder or fuel tank is sequentially connected with the vaporizing furnace, a gas main shut-off valve, an intelligent pressure reducing valve with pressure feedback and an intelligent valve positioner integrated with a liquid crystal screen, an input end of the intelligent valve positioner is connected with a pressure stabilizing branch of an air compressor through a filter, and an output end of the intelligent valve positioner is connected with the T-shaped global flame envelope combustion system through a corrugated flame arrester.

6. A multi-module T-shaped dynamic coupled global flame envelope combustion simulation apparatus as claimed in claim 5, wherein, The multi-dimensional wind field simulation system comprises a plurality of high-dynamic axial flow fans, the high-dynamic axial flow fans are distributed in a matrix topology form, each high-dynamic axial flow fan is provided with an independent frequency converter, the multi-modal fire field environment monitoring system comprises a fire field panoramic video acquisition unit, a fire field space temperature field monitoring unit and a wind speed monitoring unit, the fire field panoramic video acquisition unit captures visible light and thermal radiation images of a three-dimensional flame gradient form fire field in real time through a fire field panoramic camera, and monitors fire field panoramic video; The fire field space temperature field monitoring unit is composed of a distributed thermocouple and an infrared temperature detector, and is used for acquiring fire field space temperature distribution data in real time to generate a three-dimensional temperature field model; the wind speed monitoring unit is composed of an ultrasonic wind speed meter and a pressure sensor, and is used for monitoring wind speed, wind direction and wind pressure data of a wind field simulated by the multi-dimensional wind field simulation system in real time; data monitored by the multi-modal fire field environment monitoring system is transmitted to an AI intelligent iterative control system of a computer end in real time through a communication network.

7. The method of claim 6, wherein the method further comprises: determining the number of modules based on the number of the plurality of combustion chambers. The method comprises the following steps: S1, transporting the first skid-mounted unit, the second skid-mounted unit, the horizontal linear combustion module, the vertical annular combustion module, the multi-modal fire field environment monitoring system and the multi-dimensional wind field simulation system to a target site, and moving to a preset position; S2, place the vertical annular combustion module on the ground, install the horizontal linear combustion module under the reaction frame, so that the vertical annular combustion module and the horizontal linear combustion module are arranged in a T shape; install the T-shaped test piece on the reaction frame, so that the vertical part of the T-shaped test piece is placed in the center of the vertical annular combustion module, and the horizontal part of the T-shaped test piece is placed directly above the horizontal linear combustion module; S3, start the explosion-proof fire extinguishing device in the first jack-up unit, monitor the gas concentration in the jack-up unit in real time, and keep running all the time; if the combustible gas detector detects that the gas concentration in the first jack-up unit is greater than or equal to 25% LEL at any time, immediately start the suspension type ultra-fine dry powder fire extinguisher and cut off the power supply to stop the test; S4, the gas pipeline of the first jack-up unit is connected with each gas inlet of the horizontal linear combustion module and each double-inlet branch pipe of the vertical annular combustion module through quick flanges, the output end of the power distribution cabinet of the second jack-up unit is connected with the power supply port of the high-dynamic axial flow fan through cables, and the communication interface of the electrical control cabinet is connected with the PLC controllers of the horizontal linear combustion module, the vertical annular combustion module and the high-dynamic axial flow fan; S5, input the target fire scene parameters into the AI intelligent iterative control system to generate an initial control instruction set; S6, open the gas supply valve, adjust the gas flow through the intelligent valve positioner on the computer terminal of the AI intelligent iterative control system, and synchronously adjust the wind speed of the high-dynamic axial flow fan through the frequency converter; S7, trigger the high-energy pulse spark igniter of the horizontal linear combustion module and the vertical annular combustion module to ignite, activate the multi-modal fire environment monitoring system, and collect and feed back the flame shape, temperature field and wind field data to the AI intelligent iterative control system in real time; S8, based on the deviation of real-time data and preset parameters, the AI intelligent iterative control system iteratively optimizes the opening degree of the intelligent valve positioner and the wind speed of the high-dynamic axial flow fan through the LSTM model to reproduce the real three-dimensional dynamic flame envelope combustion mode of the fire; S9, terminate the test, close the gas valve and stop the high-dynamic axial flow fan; S10, store the full-cycle test data package.

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