Multifunctional ventilation performance test and explosion toxic gas disposal test bed

Abstract

The invention discloses a multifunctional ventilation performance test and explosion toxic gas disposal test bed. The multifunctional ventilation performance test and explosion toxic gas disposal test bed comprises a movable support, a gas generation system, a pipeline system, an experiment system, a tail gas treatment system and a computer control system. The gas generation system comprises a gas cylinder, a blasting pipe, an ignition device, a rupture disk, a diverging pipe and a premixing tank; the pipeline system comprises a first vertical pipe, a horizontal pipe, a window, a second vertical pipe, a safety valve cover, an air outlet pipe, a butterfly valve and a hose. The experiment system comprises a heating curtain plate, a powder spraying device, an energy absorption box and a fan. According to test requirements, a heating curtain plate or a powder spraying device is loaded in the middle of the horizontal pipe so as to realize switching of different gas treatment methods; the tail gas treatment system is used for purifying waste gas generated by experiments. Three test function modules for ventilator performance test, poison gas treatment and energy absorption and pressure relief are integrated on the U-shaped pipeline, the actual industrial environment condition can be simulated, the influence and relevance among test parameters are better revealed, and the test result precision and reliability are higher.

Description

Technical Field

[0001] The present invention relates to the technical field of production safety test equipment, in particular to a multifunctional ventilation performance test bench and explosion and toxic gas disposal test bench. Background Art

[0002] In the field of industrial safety and production, especially in environments like mining and chemical industries where there's a risk of combustible gas explosions, ventilation system reliability and explosion disaster prevention capabilities are crucial for ensuring personnel safety and stable equipment operation. Currently, testing equipment and technology in this field primarily focus on testing ventilator performance and simulating the propagation characteristics of combustible gas explosions. However, these technologies face numerous limitations in practical engineering applications.

[0003] First, existing fan performance testing equipment generally utilizes a closed wind tunnel structure. By controlling the airflow parameters within the wind tunnel, it can accurately measure basic fan performance indicators such as air volume, air pressure, and efficiency under different operating conditions. However, the testing environment of such equipment is significantly idealized: the airflow within the closed wind tunnel exhibits a linear and stable state, which can only simulate fan operation under a single operating condition. This is fundamentally different from the actual operating conditions faced by ventilation systems in complex and hazardous environments such as mines and tunnels.

[0004] Secondly, for combustible gas explosion hazards, existing testing devices and methods focus on measuring a single parameter of the gas explosion process to assess characteristics such as the propagation speed of the blast wave, pressure changes, and explosive energy release. However, in actual projects, the shock wave generated by a gas explosion can directly affect the ventilator, causing ventilation system failure, leading to chain reactions such as the accumulation of toxic gases and insufficient oxygen supply in the disaster area. However, existing devices only measure explosion parameters in isolation and fail to incorporate online status diagnostics of the ventilator, such as vibration signals and power consumption changes, into the evaluation system. This makes it impossible to reveal the relationship between the explosion shock and ventilator failure.

[0005] Furthermore, in explosion disaster prevention and control, the selection and layout of reactive materials are crucial to the efficiency of toxic gas elimination and explosion energy absorption. However, the idealized experimental conditions of existing equipment cannot simulate the multi-field coupling environment of actual disasters. This leads to a discrepancy between material performance evaluation results and engineering application results, making it difficult to verify the long-term stability and actual performance of materials under complex working conditions.

[0006] In view of the above-mentioned shortcomings of the existing technology, it is urgent to design an integrated test bench that can simultaneously carry out fan performance testing, toxic gas elimination testing and energy absorption and pressure relief testing, and can simulate actual industrial environmental conditions, comprehensively evaluate the performance of various materials in the face of toxic gas disposal and ventilation, and better reveal the influence and correlation between various test parameters. Summary of the Invention

[0007] In order to solve the above technical problems, the present invention provides a multifunctional ventilation performance test and explosion toxic gas disposal test bench, which integrates three functional modules of fan performance test, toxic gas disposal and energy absorption and pressure relief on a U-shaped pipeline. It can simulate actual industrial environmental conditions, accurately reproduce the airflow disturbance, shock wave propagation and ventilation system coupling scenes in actual disasters, and better reveal the influence and correlation between various test parameters, and comprehensively evaluate the performance of various materials in the face of toxic gas disposal and ventilation. The test results are more accurate and reliable.

[0008] The technical solution adopted by the present invention to solve the technical problem is: a multifunctional ventilation performance test and explosion toxic gas treatment test bench, including a movable bracket and a gas generation system, a piping system, an experimental system, an exhaust gas treatment system and a computer control system arranged on the movable bracket; The gas generation system includes a gas cylinder, a blast tube, an ignition device, a bursting disc, a gradually expanding tube, and a premixing tank; there are two gas cylinders, each containing air and methane; the blast tube is mounted on the upper part of the movable bracket; a pressure gauge and a high-pressure sensor are mounted on the blast tube for detecting the initial pressure and explosion pressure in the blast tube; the bursting disc is connected between the blast tube and the gradually expanding tube; the ignition head of the ignition device is mounted at the center of one end of the blast tube away from the bursting disc; the premixing tank is used to configure a certain concentration of combustible gas and is connected to the blast tube through a pipeline; The piping system includes a No. 1 vertical pipe, a horizontal pipe, a sight glass, a No. 2 vertical pipe, a safety valve cover, an air outlet pipe, a butterfly valve, and a hose; one end of the horizontal pipe is connected to the gradually expanding pipe, and the No. 1 vertical pipe and the No. 2 vertical pipe are respectively vertically connected to the tops of the two ends of the horizontal pipe; the top cover of the No. 1 vertical pipe is closed by a flange, and the top of the No. 2 vertical pipe is a safety valve cover; one side of the No. 2 vertical pipe is connected to the air outlet pipe, and the end of the air outlet pipe away from the No. 2 vertical pipe is connected to the butterfly valve, which is used to control the opening and closing of the pipeline, and the side of the butterfly valve away from the air outlet pipe is connected to the hose; The experimental system includes a heating curtain plate, a powder spraying device, an energy absorption box, and a fan. The middle portion of the horizontal tube is sealed by the heating curtain plate or the powder spraying device. Depending on the test requirements, the heating curtain plate or the powder spraying device is installed in the middle portion of the horizontal tube to achieve switching between different gas treatment methods. The energy absorption box is connected to the end of the horizontal tube near the second vertical pipe via a flange for loading test materials. The end of the hose away from the butterfly valve is connected to the fan, which is fixed to a movable bracket. The air outlet of the fan is connected to the exhaust gas treatment system, which is used to purify the exhaust gas generated by the experiment; The gas generation system, piping system, experimental system, and tail gas treatment system are all electrically connected to a computer control system to perform test control and obtain test data of each system.

[0009] Furthermore, the horizontal pipe is equipped with a temperature and humidity sensor I, a pressure sensor I and a pressure sensor II for monitoring the temperature and humidity and pipeline pressure in front of the curtain plate; The second vertical pipe is equipped with a temperature and humidity sensor II and a pressure sensor III for monitoring the pressure, temperature and humidity after the test material is applied.

[0010] Furthermore, a first gas collection port is provided at one end of the horizontal pipe close to the first vertical pipe, and the original gas generated by the explosion is collected through a gas collection belt; A No. 2 gas production port is provided in the middle of the No. 2 vertical pipe, and the No. 2 gas production port is connected to three gas collection belts through a three-way pipe. Solenoid valves are provided on the three gas collection belts connected to the No. 2 gas production port. The solenoid valves are connected to the computer control system for controlling the safe time-series collection of gas.

[0011] Furthermore, a differential pressure sensor and a wind speed sensor are provided on the air outlet pipe to monitor the wind speed in the pipeline and the working pressure of the fan; A fan bracket is provided at the bottom of the fan, and the fan is fixed on the movable bracket through the fan bracket. A vibration sensor is installed on the fan bracket to monitor the vibration frequency of the fan when it is working; a power meter is connected between the fan and the computer control system to monitor the operating power of the fan.

[0012] Furthermore, the heating curtain plate includes a heating plate fixing frame, an electric heating plate and a gauze. The heating plate fixing frame is connected to the horizontal tube through a flange. The electric heating plate is welded to the heating plate fixing frame at equal intervals horizontally and connected to the computer control system in parallel with a waterproof wire. The gauze is vertically installed on both sides of the heating plate fixing frame to prevent the test material from escaping.

[0013] Furthermore, the powder spraying device includes a spray head, a powder storage tank, a powder spraying pipeline and a powder spraying solenoid valve; The nozzle is installed in a horizontal pipe, and one end of the powder spraying pipeline penetrates into the horizontal pipe and is connected to the nozzle; the powder storage tank and the powder spraying solenoid valve are installed on the powder spraying pipeline outside the horizontal pipe, and the powder spraying solenoid valve is relatively located on the side of the powder storage tank away from the nozzle, the powder storage tank is used to store the powder material for testing, and the powder spraying solenoid valve is connected to a computer control system for controlling the powder spraying time; the other end of the powder spraying pipeline away from the nozzle is connected to a high-pressure gas cylinder containing air for providing power for powder spraying.

[0014] Furthermore, the energy absorption box is equipped with an energy absorption seat made of stainless steel. Four chair legs are respectively provided at the front and rear corners of the energy absorption seat to fix the energy absorption material in the energy absorption box; a circular hole is provided in the middle of the energy absorption seat to remove the energy absorption material; After the material to be tested is mounted on the energy absorbing seat, two sets of strain gauges are installed on the material to be tested. The strain gauges are connected to a dynamic data acquisition instrument, which is connected to a computer control system for dynamically acquiring the deformation of the material to be tested.

[0015] Furthermore, the exhaust gas treatment system includes a vertical elbow pipe, a spray box, a water pipe, a circulating water pump and an exhaust pipe; one end of the vertical elbow pipe is connected to the fan, and the other end is connected to the bottom of the spray box. The top of the spray box is connected to the exhaust pipe, and the circulating water pump is connected to the water pipe, and the end of the water pipe away from the circulating water pump penetrates into the spray box.

[0016] Furthermore, the computer control system includes an operating system and a data acquisition system. The operating system controls the opening and closing of each solenoid valve through the output switching value of the relay. Each sensor is connected to the PLC and integrated into the data acquisition system. The operating system is provided with safety buttons, including a main power button, a power lock button, a program emergency stop button, and a power emergency stop button, to ensure the operational safety of the experimental process; The operating system is also provided with action buttons, including an ignition start button, a powder spray start button, a water pump start button, a water pump stop button, a thermal curtain start button, a thermal curtain stop button and a gas collection start button, and all action buttons are normally open buttons; The operating system is equipped with two modes: manual and automatic. The manual mode is used to test each switch action individually, while the automatic mode is used to coordinate the actions of ignition, powder spraying, and reaction gas timing collection. The delay time range is 0.01s-10s, which is used for short-term timing data collection after the explosion. In view of the two gas handling methods of the powder spraying device and the heating curtain plate, the operating system is also set with two modes of powder spraying and heating, which can be switched for use; The data acquisition system is used to collect data measured by various sensors and monitoring instruments.

[0017] Furthermore, the multifunctional ventilation performance test and explosion toxic gas disposal test bench can be applied to any one or more of the fan performance test, toxic gas elimination test, and energy absorption and pressure relief test under normal conditions, as well as any one or more of the fan performance test, toxic gas elimination test, and energy absorption and pressure relief test under catastrophic conditions.

[0018] Beneficial effects of the present invention: 1. Compared with the existing technology, which requires multiple sets of independent equipment to complete fan testing, explosion simulation, and material evaluation, resulting in high costs and lack of data correlation, the present invention integrates the three functional modules of fan performance testing, toxic gas disposal, and energy absorption and pressure relief through a U-shaped pipeline. Test analysis can be completed sequentially or simultaneously in the same test process, with low cost and high efficiency, and can better reveal the influence and correlation between various test parameters.

[0019] 2. Compared with the existing ventilation fan testing which mostly adopts closed wind tunnels and explosion simulation relies on simple pipes, it is impossible to reproduce the complex circuits of actual tunnels. The present invention adopts a U-shaped pipe design, and realizes flexible switching between closed, semi-closed and open systems through the openable and closable top cover and butterfly valve of the No. 1 vertical pipe. A ventilation circuit structure close to the mining and chemical environment is constructed in a single device, accurately reproducing the airflow disturbance, shock wave propagation and ventilation system coupling scenes in actual disasters. The right-angle corners of the horizontal pipe and the vertical pipe section can produce turbulent effects, and cooperate with the powder spraying device to simulate dust diffusion, realizing a multiphase flow coupling environment of gas and dust, and solving the problem that traditional equipment can only simulate a single airflow.

[0020] 3. The explosion tube can generate high-intensity shock waves, enhance the injection pressure through the gradually expanding tube, and simulate the transient impact of the gas explosion on the fan. At the same time, the fan runs in real time, and the vibration frequency and power fluctuations under the action of the shock wave are synchronously monitored to reveal the dynamic response mechanism of explosion impact and equipment failure.

[0021] 4. Vibration sensors and power meters are installed on the fan bracket to monitor the vibration frequency and power consumption changes of the fan under the impact of the explosion in real time, breaking through the limitation of traditional wind tunnels that only measure stable operating parameters; heating curtain plates and powder spraying devices are designed to switch between filtering and active spraying gas treatment methods, realizing dynamic purification efficiency comparison of different materials in high-temperature, multi-component gas environments; the energy absorption box has a built-in stainless steel energy absorption seat, which dynamically collects material deformation data through strain gauges and combines pressure sensors to monitor explosion energy dissipation, solving the problem of lack of real-time deformation monitoring in existing energy-absorbing material tests; through temperature and humidity sensors, pressure sensors, differential pressure sensors and other types of sensors, the temperature field, pressure field and gas concentration field data during the explosion process are synchronously collected to realize the correlation analysis of explosion parameters, material response and equipment performance, solving the problem of single parameter measurement in existing technologies.

[0022] 5. The computer control system supports both manual and automatic modes. The manual mode is used for single-step debugging, and the automatic mode can set the delay time of ignition, powder injection and gas collection to accurately capture transient data after explosion and avoid manual operation delay errors. The data acquisition system integrates multiple types of sensors, synchronizes data in real time through PLC, and generates comprehensive analysis reports, which makes the test results more accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a structural diagram for reflecting the layout positions of various sensors in the present invention.

[0025] Figure 3It is a schematic structural diagram of the heating curtain plate in the present invention.

[0026] Figure 4 It is a structural schematic diagram of the powder spraying device in the present invention.

[0027] Figure 5 Schematic diagram of the local structure of the energy absorbing seat.

[0028] Figure 6 This is a schematic diagram of the local structure of the energy absorbing seat of the present invention when the energy absorbing material and strain gauge are installed.

[0029] Figure 7 It is a partial structural diagram of the present invention for reflecting the gas path connection.

[0030] In the figure: 1. movable bracket; 2. gas cylinder; 3. blast pipe; 4. ignition device; 5. shock-absorbing pipe seat; 6. blasting disc; 7. gradual expansion pipe; 8. premixing tank; 9. No. 1 vertical pipe; 10. horizontal pipe; 11. window; 12. heating curtain plate; 121. heating plate fixing frame; 122. electric heating plate; 123. mesh; 13. powder spraying device; 131. nozzle; 132. powder storage tank; 133. powder spraying pipeline; 134. powder spraying solenoid valve; 14. energy absorption box; 141. energy absorption seat; 15. No. 2 vertical pipe; 16. safety valve cover; 17. outlet pipe; 18. butterfly valve; 19. hose; 20. fan; 21. fan bracket; 22. vertical elbow; 2 3. Spray box; 24. Water pipe; 25. Circulating water pump; 26. Exhaust pipe; 27. Vacuum pump; 28. Gas outlet No. 1; 29. ​​Gas outlet No. 2; 301. First valve; 302. Second valve; 303. Third valve; 304. Fourth valve; 305. Fifth valve; 306. Sixth valve; 307. Seventh valve; 308. Eighth valve; C1. High-pressure sensor; C2. Pressure sensor I; C3. Temperature and humidity sensor I; C4. Pressure sensor II; C5. Temperature and humidity sensor II; C6. Pressure sensor III; C7. Wind speed sensor; C8. Differential pressure sensor; C9. Vibration sensor; C10. Strain gauge. DETAILED DESCRIPTION

[0031] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0032] The invention discloses a multifunctional ventilation performance test bench and explosion toxic gas disposal test bench.

[0033] Reference Figure 1 The multifunctional ventilation performance test and explosion toxic gas disposal test bench includes a movable bracket 1 and a gas generating system, a piping system, an experimental system, an exhaust gas treatment system and a computer control system arranged on the movable bracket 1.

[0034] Reference Figure 1 and Figure 2 The bottom of the movable bracket 1 is equipped with a universal wheel with a brake to facilitate the movement and positioning of the test bench. The gas generation system includes a gas cylinder 2, a vacuum pump 27, a combustion tube 3, an ignition device 4, a shock-absorbing pipe seat 5, a bursting disc 6, a gradual expansion pipe 7 and a premixing tank 8. There are two gas cylinders 2, and the two gas cylinders 2 are respectively filled with air and methane gas; each gas cylinder 2 is equipped with a pressure reducing valve; the combustion tube 3 is installed on the upper left side of the movable bracket 1 and is connected to the movable bracket 1 through the shock-absorbing pipe seat 5. The shock-absorbing pipe seat 5 plays a buffering and shock-absorbing role for the combustion tube 3. A pressure gauge and a high-pressure sensor C1 are installed on the combustion tube 3 to detect the initial pressure and explosion pressure in the combustion tube 3. The combustion chamber in the combustion tube 3 is made of stainless steel, and the designed maximum pressure and working pressure are 40MPa and 30MPa respectively.

[0035] Reference Figure 1 and Figure 2 The bursting disc 6 is installed between the explosive tube 3 and the diverging tube 7, sealing the tube 3 and relieving pressure. The diverging tube 7 increases the injection pressure of the explosive tube 3. The ignition device 4 includes an ignition head and an ignition assembly. The ignition assembly is connected to the computer control system, and the ignition head is located at the center of the end of the explosive tube 3 away from the bursting disc 6. The premix tank 8 is placed in front of the movable bracket 1 and is equipped with a pressure gauge for adjusting the concentration of the combustible gas.

[0036] Reference Figure 1 and Figure 2 The pipeline system includes a No. 1 vertical pipe 9, a horizontal pipe 10, a viewing window 11, a No. 2 vertical pipe 15, a safety valve cover 16, an air outlet pipe 17, a butterfly valve 18 and a hose 19. The horizontal pipe 10 is located above the movable bracket 1. The left end of the horizontal pipe 10 is connected to the diffuser pipe 7 of the gas generating system. The No. 1 vertical pipe 9 and the No. 2 vertical pipe 15 are vertically connected to the top of the two ends of the horizontal pipe 10 respectively; wherein, the top cover of the No. 1 vertical pipe 9 adopts a flange closed connection, and the top of the No. 2 vertical pipe 15 is a safety valve cover 16, which can release pressure in time when the pressure is too high. The right side of the No. 2 vertical pipe 15 is connected to the air outlet pipe 17, and the end of the air outlet pipe 17 away from the No. 2 vertical pipe 15 is connected to the butterfly valve 18. The butterfly valve 18 is used to control the opening and closing of the pipeline. The side of the butterfly valve 18 away from the air outlet pipe 17 is connected to the hose 19.

[0037] The horizontal pipe 10, the No. 1 vertical pipe 9 and the No. 2 vertical pipe 15 in the piping system are 200mm×200mm square pipes. The No. 1 vertical pipe 9 and the No. 2 vertical pipe 15 are vertically connected to the top of the two ends of the horizontal pipe 10, making the piping system as a whole U-shaped, which is more similar to the actual tunnel engineering ventilation system.

[0038] Reference Figure 1 and Figure 2Two rectangular viewing windows 11 are installed on one side of horizontal tube 10 for filming and observing flame propagation, powder diffusion, and material deformation. Temperature and humidity sensor IC3, pressure sensor IC2, and pressure sensor IIC4 are installed on horizontal tube 10 to monitor the temperature and humidity in front of the curtain plate and the pipeline pressure. Temperature and humidity sensor IIC5 and pressure sensor IIIC6 are installed on vertical tube 15 to monitor the pressure and temperature and humidity after the test material is exposed.

[0039] A No. 1 gas collection port 28 is set at the front end of the horizontal pipe 10, and the original gas generated by the explosion is collected by using a gas collecting bag; a No. 2 gas collection port 29 is set in the middle of the No. 2 vertical pipe 15, and the No. 2 gas collection port 29 is connected to three gas collecting bags through a three-way pipe. A solenoid valve is set in front of each gas collecting bag, which is connected to the computer control system for controlling the safe time-series collection of gas.

[0040] The experimental system includes a heated curtain plate 12, a powder spraying device 13, an energy absorption box 14, a fan 20, and a fan bracket 21. The heated curtain plate 12 or powder spraying device 13 is mounted via a flange in the middle of the horizontal tube 10, dividing the middle of the horizontal tube 10. Depending on the test requirements, the heated curtain plate 12 or powder spraying device 13 is installed in the middle of the horizontal tube 10 to switch between different gas treatment methods.

[0041] The energy absorption box 14 is connected to the right end of the horizontal pipe 10 through a flange for loading and unloading test materials. The end of the hose 19 away from the butterfly valve 18 is connected to the fan 20, which is fixed to the movable bracket 1 through the fan bracket 21.

[0042] Reference Figure 1 and Figure 2 The outlet pipe 17 is equipped with a differential pressure sensor C8 and a wind speed sensor C7 to monitor the wind speed in the pipeline and the operating pressure of the fan 20. A vibration sensor C9 is installed on the fan bracket 21 to monitor the vibration frequency of the fan 20 during operation. A power meter is connected between the fan 20 and the computer control system to monitor the power consumption of the fan 20 during operation and control the start and stop of the fan 20.

[0043] Reference Figure 3 The heating curtain plate 12 includes a heating plate fixing frame 121, electric heaters 122, and a screen 123. The heating plate fixing frame 121 is made of stainless steel, has a designed heat load of 0.35kW, and is connected to the horizontal tube 10 via a flange. The electric heaters 122 have a heating temperature range of 0-200°C and are welded horizontally and equidistantly in the heating plate fixing frame 121. They are also connected to the computer control system via waterproof wires. The screen 123 is made of stainless steel and is vertically mounted on both sides of the heating plate fixing frame 121 to prevent the test material from escaping.

[0044] Reference Figure 4The powder spraying device 13 includes a spray head 131, a powder storage tank 132, a powder spraying pipeline 133, and a powder spraying solenoid valve 134. The spray head 131 is installed in the horizontal pipe 10, and one end of the powder spraying pipeline 133 penetrates the horizontal pipe 10 and is connected to the spray head 131. The powder storage tank 132 and the powder spraying solenoid valve 134 are installed on the powder spraying pipeline 133 located outside the horizontal pipe 10, and the powder spraying solenoid valve 134 is relatively located on the side of the powder storage tank 132 away from the spray head 131. The powder storage tank 132 is used to store the powder material to be tested. The powder spraying solenoid valve 134 is connected to a computer control system for controlling the powder spraying time. The other end of the powder spraying pipeline 133 away from the spray head 131 is connected to a high-pressure gas cylinder 2 containing air to provide power for powder spraying.

[0045] Reference Figure 5 and Figure 6 Energy absorption box 14 has an energy absorption seat 141 built into it. This seat is made of stainless steel. Four legs are located at the front and rear corners of the seat 141 to secure the energy absorption material within the energy absorption box 14, while leaving space for the strain gauge C10. A circular hole is provided in the center of the seat 141 for removing the energy absorption material to be tested.

[0046] After the material to be tested is mounted on the energy absorbing seat 141 , two sets of strain gauges C10 are installed on the material to be tested. The strain gauges C10 are connected to a dynamic data acquisition instrument, which is connected to a computer control system for dynamically acquiring the deformation of the material to be tested.

[0047] The tail gas treatment system is used to purify the exhaust gas generated by the experiment. It includes a vertical elbow pipe 22, a spray box 23, a water pipe 24, a circulating water pump 25, and an exhaust pipe 26. One end of the vertical elbow pipe 22 is connected to the air outlet of the fan 20, and the other end is connected to the air inlet at the bottom of the spray box 23. The top of the spray box 23 is connected to the exhaust pipe 26. The circulating water pump 25 is connected to the water pipe 24, and the end of the water pipe 24 away from the circulating water pump 25 passes into the spray box 23.

[0048] The computer control system includes an operating system and a data acquisition system. The operating system controls the opening and closing of each solenoid valve via relay outputs. Each sensor is connected to a programmable logic controller (PLC) and integrated into the data acquisition system. The operating system is equipped with safety buttons, including main power, power lock, program emergency stop, and power emergency stop, to ensure operational safety during the experiment. The operating system also has corresponding action buttons, including ignition start, powder spray start, water pump start, water pump stop, thermal curtain start, thermal curtain stop, and gas collection start. All action buttons are normally open.

[0049] The operating system features both manual and automatic modes. Manual mode is used for testing individual switch actions, while automatic mode coordinates ignition, powder spraying, and reaction gas timing data collection. The delay range is 0.01-10 seconds, enabling short-term post-explosion timing data collection. To address the two gas handling methods of the powder sprayer 13 and heated curtain 12, the operating system also features two switchable modes: powder spraying and heating.

[0050] The computer control system can adjust the delay time of each gas sampling port to collect the changes in gas concentration over time during the explosion process of the closed and open systems. The data acquisition system is used to collect data measured by the aforementioned pressure sensors, temperature and humidity sensors, wind speed sensor C7, differential pressure sensor C8, power meter, vibration sensor C9, and dynamic data acquisition instrument.

[0051] Reference Figure 7 A first valve 301 is provided on the gas cylinder 2 filled with air, a second valve 302 is connected to the pipeline between the gas cylinder 2 filled with air and the powder spraying device 13, a third valve 303 is provided on the gas cylinder 2 filled with methane, a fourth valve 304 is connected to the pipeline between the vacuum pump 27 and the horizontal pipe 10, and a fifth valve 305 is connected to the pipeline between the premixing tank 8 and the horizontal pipe 10; a sixth valve 306 is provided at the air outlet of the premixing tank 8; a seventh valve 307 is connected to the pipeline between the gas cylinder 2 filled with methane and the air inlet of the premixing tank 8; and an eighth valve 308 is connected to the pipeline between the gas cylinder 2 filled with air and the air inlet of the premixing tank 8.

[0052] The present invention designs the pipeline into a U shape, which can effectively simulate the underground ventilation circuit. At the same time, two different gas treatment devices and energy absorption devices are designed, which can carry out three experiments: toxic gas treatment, fan performance testing and regulation, and energy absorption material testing separately or in combination. Through the openable and closable top cover and butterfly valve 18, flexible conversion between closed system, semi-closed system and open system can be realized, simulating a variety of actual working conditions, so as to comprehensively evaluate the performance of various new materials in the face of toxic gas treatment and ventilation. Through precise performance testing and data analysis, it can provide effective experimental basis for the safety performance evaluation and optimization of related equipment, thereby providing strong protection for industrial safety production.

[0053] The design of the multifunctional ventilation performance test and explosion toxic gas disposal test bench enables the multifunctional ventilation performance test and explosion toxic gas disposal test bench to be applied to any one or more of the fan performance test, toxic gas elimination test, and energy absorption and pressure relief test under normal conditions, as well as any one or more of the fan performance test, toxic gas elimination test, and energy absorption and pressure relief test under catastrophic conditions.

[0054] The method for performing a fan performance test on a multifunctional ventilation performance test and explosion toxic gas disposal test bench of the present invention is as follows: ① The normal working condition fan performance test includes the following steps: S1: Open the top cover of the No. 1 vertical pipe 9 and open the butterfly valve 18 to form a ventilation circuit; S2: Turn on the data acquisition system of the computer control system; S3: Turn on the fan 20, adjust the opening of the butterfly valve 18, and record the values ​​of temperature and humidity, differential pressure, wind speed, vibration sensor C9 and power meter after each adjustment.

[0055] S4: Turn off the fan 20.

[0056] ② Wind turbine performance testing under disaster conditions includes the following steps: S1: Installation and commissioning of the test bench: Install and connect the gas generation system, piping system, fan 20, exhaust gas treatment system and computer control system; open the top cover of the No. 1 vertical pipe 9 and the butterfly valve 18, and commission each part to ensure that each device is connected properly.

[0057] S2: Air tightness test: Open the gas cylinder 2 filled with dry air and connect it to the premix tank 8 and the explosion chamber in the explosion tube 3, input a gas pressure of 0.8MPa, and check the air tightness of the system; if the pressure gauge value drops by no more than 0.001MPa per minute, it can be used normally; otherwise, check for leaks and strengthen the seal.

[0058] S3: Vacuum the explosion pipe 3 and the premixing tank 8: Connect the pipeline between the premixing tank 8 and the explosion pipe 3, open the fifth valve 305 and the sixth valve 306; connect the pipeline between the vacuum pump 27 and the explosion pipe 3, open the second valve 302, turn on the power of the vacuum pump 27, and when the pressure gauge is close to -0.09MPa, close the fourth valve 304, the fifth valve 305 and the sixth valve 306, and then turn off the power of the vacuum pump 27.

[0059] S4: Premixed gas configuration: configure the methane-air premixed gas of a specific concentration according to Dalton's law of partial pressure; first open the third valve 303 and the seventh valve 307, charge the methane at a specified pressure, and then close the seventh valve 307 and the third valve 303 in sequence; then open the first valve 301 and the eighth valve 308, charge the dry air at a set pressure, and then close the eighth valve 308 and the first valve 301 in sequence. After the gas distribution is completed, let it stand for 30 minutes to allow it to be fully premixed.

[0060] S5: Inflation of the explosion tube 3: Open the sixth valve 306 and the fifth valve 305 in sequence; after reaching the set pressure of the explosion tube 3, close the fifth valve 305 and the sixth valve 306 in sequence, and disconnect the gas supply line between the explosion tube 3 and the premixing tank 8.

[0061] S6: Ignition and data acquisition: Turn on the computer control system, turn on the fan 20 and the circulating water pump 25, and after the operating parameters of the fan 20 are stable, perform manual ignition.

[0062] S7: Cleaning the test bench: first open the fifth valve 305 to restore the explosion tube 3 to normal pressure, and then turn off the fan 20 and the circulating water pump 25.

[0063] The method for performing a toxic gas elimination test on a multifunctional ventilation performance test and explosion toxic gas disposal test bench of the present invention is as follows: ① Test on elimination of poisonous gas by spraying powder under explosion conditions S1: Installation and commissioning of the test bench: Install and connect the gas generating device, piping system, powder spraying device 13, fan 20, exhaust gas treatment system, and computer control system. Open the top cover of the No. 1 vertical pipe 9 and the butterfly valve 18, and commission each part to ensure that each device is properly connected.

[0064] S2: Air tightness test: Open the gas cylinder 2 filled with dry air and connect it to the premix tank 8 and the explosion chamber of the explosion tube 3, input a gas pressure of 0.8MPa, and check the air tightness of the system; if the pressure gauge value drops by no more than 0.001MPa per minute, it can be used normally; otherwise, check for leaks and strengthen the seal.

[0065] S3: Vacuum the explosion pipe 3 and the premixing tank 8: Connect the pipeline between the premixing tank 8 and the explosion pipe 3, open the fifth valve 305 and the sixth valve 306, connect the pipeline between the vacuum pump 27 and the explosion pipe 3, and open the fourth valve 304, turn on the power of the vacuum pump 27. When the pressure gauge is close to -0.09MPa, close the fourth valve 304, the fifth valve 305 and the sixth valve 306, and then turn off the power of the vacuum pump 27.

[0066] S4: Filling the experimental materials: Fill the powder material to be tested into the powder storage tank 132, and connect the powder spraying pipeline 133 and the high-pressure gas cylinder 2 filled with air.

[0067] S5: Premixed gas configuration: Configure the methane-air premixed gas of a specific concentration according to Dalton's law of partial pressure. First, open the third valve 303 and the seventh valve 307, charge the methane at the specified pressure, and then close the seventh valve 307 and the third valve 303 in sequence. Then open the first valve 301 and the eighth valve 308, charge the dry air at the set pressure, and then close the eighth valve 308 and the first valve 301 in sequence. After the gas distribution is completed, let it stand for 30 minutes to allow it to be fully premixed.

[0068] S6: Set the operating parameters: Select the automatic mode and powder spraying mode on the computer operating system, and set the ignition, powder spraying, and the action delay time of each gas sampling port.

[0069] S7: Inflation of the explosion tube 3: Open the sixth valve 306 and the fifth valve 305 in sequence, and close the fifth valve 305 and the sixth valve 306 after reaching the set pressure of the explosion tube 3, and disconnect the gas supply line between the explosion tube 3 and the premixing tank 8.

[0070] S8: Ignition and data collection: Turn on the computer control system, turn on the circulating water pump 25, click to start a series of actions automatically, close the sixth valve 306 after the action is completed, and remove the air collection bag; collect the data of each sensor during the explosion process through the data acquisition system.

[0071] S9: Cleaning the test bench: Turn on the blower 20 to clean the residual gas and powder in the tube, and open the fifth valve 305 to restore the explosion tube 3 to normal pressure.

[0072] ② Test on eliminating toxic gas by heating curtain plate 12 under explosion conditions When using the heating curtain plate 12 to eliminate the toxic gas produced by the explosion, the powder spraying device 13 is not installed in step S1 of the powder spraying toxic gas elimination test under explosion conditions. First, the material is evenly placed on the electric heating plate 122, and then the heating curtain plate 12 is installed in the horizontal tube 10. In step S6 of the powder spraying toxic gas elimination test under explosion conditions, the heating mode is selected. The remaining steps are the same as the steps of the powder spraying toxic gas elimination test under explosion conditions.

[0073] ③ Use heating curtain plate 12 to conduct toxic gas elimination test at normal temperature and pressure S1: Install the system: Install and connect the gas generating device, piping system, heating curtain plate 12 with the material to be tested, fan 20, exhaust gas treatment system, and computer control system, but do not install the bursting disc 6. Open the top cover of the No. 1 vertical pipe 9 and the butterfly valve 18 and debug each part to ensure that all devices are connected properly.

[0074] S2: Air tightness test: Open the gas cylinder 2 filled with dry air and connect it to the premix tank 8, input a gas pressure of 0.8MPa, and check the air tightness of the system. If the pressure gauge value drops by no more than 0.001MPa per minute, it can be used normally; otherwise, check for leaks and strengthen the seal.

[0075] S3: Premixed gas configuration: According to Dalton's law of partial pressure, a specific concentration of methane-air premixed gas is configured. First, the third valve 303 and the seventh valve 307 are opened. After charging methane at a specified pressure, the seventh valve 307 and the third valve 303 are closed in sequence. Then, the first valve 301 and the eighth valve 308 are opened. After charging dry air at a set pressure, the eighth valve 308 and the first valve 301 are closed in sequence. After the gas distribution is completed, it is allowed to stand for 30 minutes to allow it to be fully premixed. Different mixed gases are configured according to the material measurement needs.

[0076] S4: Curtain plate heating: Manually control the curtain plate heating. When the curtain plate temperature reaches the set temperature, turn on the circulating water pump 25.

[0077] S5: Reaction gas flow transmission and data collection: Open the fifth valve 305 and the sixth valve 306, and manually control each gas sampling port to collect the gas after the material to be tested acts.

[0078] The method for performing an energy absorption and pressure relief test on a multifunctional ventilation performance test bench and an explosion toxic gas disposal test bench of the present invention is as follows: S1: Installation and commissioning of the test bench: Install and connect the gas generation system, piping system, fan 20, exhaust gas treatment system and computer control system, close the butterfly valve 18, and commission each part to ensure that each device is connected properly.

[0079] S2: Air tightness test: Open the gas cylinder 2 filled with dry air and connect it to the premix tank 8 and the explosion chamber of the explosion tube 3. Input gas pressure of 0.8 MPa and check the air tightness of the system.

[0080] S3: Vacuum the explosion pipe 3 and the premixing tank 8: Connect the pipeline between the premixing tank 8 and the explosion pipe 3, open the fifth valve 305 and the sixth valve 306, connect the pipeline between the vacuum pump 27 and the explosion pipe 3 and open the fourth valve 304, turn on the power of the vacuum pump 27, and when the pressure gauge is close to -0.09MPa, close the fourth valve 304, the fifth valve 305 and the sixth valve 306, and then turn off the power of the vacuum pump 27.

[0081] S4: Filling the experimental materials: Fix the energy absorbing material to be tested into the energy absorbing seat 141 , install the strain gauge C10 and the temperature sensor, install them into the energy absorbing box 14 , and connect the energy absorbing box 14 to the horizontal tube 10 .

[0082] S5: Premixed gas configuration: Configure the methane-air premixed gas of a specific concentration according to Dalton's law of partial pressure. First, open the third valve 303 and the seventh valve 307, charge the methane at the specified pressure, and then close the seventh valve 307 and the third valve 303 in sequence. Then open the first valve 301 and the eighth valve 308, charge the dry air at the set pressure, and then close the eighth valve 308 and the first valve 301 in sequence. After the gas distribution is completed, let it stand for 30 minutes to allow it to be fully premixed.

[0083] S6: Inflation of the explosion tube 3: Open the sixth valve 306 and the fifth valve 305 in sequence. When the set pressure of the explosion tube 3 is reached, close the sixth valve 306 and the fifth valve 305, and disconnect the gas supply line between the explosion tube 3 and the premixing tank 8.

[0084] S7: Ignition and data acquisition: Turn on the computer control system, manually ignite, and collect data from the pressure, temperature sensor, and strain gauge C10.

[0085] S8: Clean the test bench: open the butterfly valve 18 and the circulating water pump 25, turn on the fan 20 to clean the residual gas in the pipe, open the fifth valve 305 to restore the explosion pipe 3 to normal pressure, and remove the test material.

[0086] The method of the multifunctional ventilation performance test and explosion toxic gas disposal test bench of the present invention for performing ventilator performance test, toxic gas elimination, and energy absorption and pressure relief integrated test under catastrophic conditions is as follows: S1: Installation and commissioning of the test bench: Install and connect the gas generation system, piping system, powder spraying device 13, fan 20, exhaust gas treatment system and computer control system, open the top cover of the No. 1 vertical pipe 9 and the butterfly valve 18, and commission each part to ensure that each device is connected properly.

[0087] S2: Air tightness test: Open the gas cylinder 2 filled with dry air and connect it to the premix tank 8 and the explosion chamber. Input a gas pressure of 0.8 MPa and check the air tightness of the system. If the pressure gauge value decreases by no more than 0.001 MPa per minute, the system can be used normally. Otherwise, check for leaks and strengthen the seal.

[0088] S3: Vacuum the explosion pipe 3 and the premixing tank 8: Connect the pipeline between the premixing tank 8 and the explosion pipe 3, open the fifth valve 305 and the sixth valve 306, connect the pipeline between the vacuum pump 27 and the explosion pipe 3, open the fourth valve 304, turn on the power of the vacuum pump 27, and when the pressure gauge is close to -0.09MPa, close the fourth valve 304, the fifth valve 305 and the sixth valve 306, and then turn off the power of the vacuum pump 27.

[0089] S4: Filling experimental materials: Fill the powder material to be tested into the powder storage tank 132, connect the powder spraying pipeline 133 and the high-pressure gas cylinder 2; fix the energy-absorbing material to be tested into the energy-absorbing seat 141, install the strain gauge C10, and install it into the energy-absorbing box 14, and connect the energy-absorbing box 14 to the horizontal tube 10.

[0090] S5: Premixed gas configuration: According to Dalton's law of partial pressure, a methane-air premixed gas of a specific concentration is configured. First, the third valve 303 and the seventh valve 307 are opened, and methane of a specified pressure is charged. Then, the seventh valve 307 and the third valve 303 are closed in sequence. Then, the first valve 301 and the eighth valve 308 are opened, and dry air of a set pressure is charged. Then, the eighth valve 308 and the first valve 301 are closed in sequence. After the gas distribution is completed, the gas is allowed to stand for 30 minutes to allow for sufficient premixing.

[0091] S6: Set the operating parameters: Select the automatic mode and powder spraying mode on the computer operating system, and set the ignition, powder spraying, and the action delay time of each gas sampling port.

[0092] S7: Inflation of the explosion pipe 3: Open the sixth valve 306 and the fifth valve 305 in sequence, and close the sixth valve 306 and the fifth valve 305 after reaching the set pressure of the explosion pipe 3, and disconnect the gas supply line between the explosion pipe 3 and the premixing tank 8.

[0093] S8: Ignition and data collection: Turn on the computer control system, turn on the fan 20, and turn on the circulating water pump 25 after the fan 20 runs stably. Click to start a series of actions automatically. After the actions are completed, close the second valve 302 and the powder spraying solenoid valve 134, and remove the air collection bag; collect the data of each sensor during the explosion process through the data acquisition system.

[0094] S9: Cleaning the test bench: After the test is completed, let the fan 20 and the circulating water pump 25 continue to run for a few minutes to clean the residual gas and powder in the pipe, then open the fifth valve 305 to restore the explosion pipe 3 to normal pressure, and then turn off the fan 20 and the circulating water pump 25.

[0095] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A multifunctional ventilation performance test and explosion toxic gas treatment test bench, characterized by: It comprises a movable support (1) and a gas generation system, a piping system, an experimental system, an exhaust gas treatment system and a computer control system arranged on the movable support (1); The gas generating system comprises a gas cylinder (2), a combustion and explosion tube (3), an ignition device (4), a bursting disc (6), a gradually expanding tube (7) and a premixing tank (8); the gas cylinder (2) is provided with two, and the two gas cylinders (2) respectively store air and methane; the combustion and explosion tube (3) is installed on the upper part of the movable bracket (1); the combustion and explosion tube (3) is equipped with a pressure gauge and a high-pressure sensor (C1) for detecting the initial pressure and explosion pressure in the combustion and explosion tube (3); the bursting disc (6) is connected between the combustion and explosion tube (3) and the gradually expanding tube (7); the ignition head of the ignition device (4) is installed at the center of one end of the combustion and explosion tube (3) away from the bursting disc (6); the premixing tank (8) is used to configure a certain concentration of combustible gas and is connected to the combustion and explosion tube (3) through a pipeline; The pipeline system comprises a No. 1 vertical pipe (9), a horizontal pipe (10), a viewing window (11), a No. 2 vertical pipe (15), a safety valve cover (16), an air outlet pipe (17), a butterfly valve (18) and a hose (19); one end of the horizontal pipe (10) is connected to the gradually expanding pipe (7), and the No. 1 vertical pipe (9) and the No. 2 vertical pipe (15) are respectively vertically connected to the tops of both ends of the horizontal pipe (10); the top cover of the No. 1 vertical pipe (9) is closed by a flange, and the top of the No. 2 vertical pipe (15) is a safety valve cover (16); one side of the No. 2 vertical pipe (15) is connected to the air outlet pipe (17), and the end of the air outlet pipe (17) away from the No. 2 vertical pipe (15) is connected to the butterfly valve (18), and the butterfly valve (18) is used to control the opening and closing of the pipeline, and the side of the butterfly valve (18) away from the air outlet pipe (17) is connected to the hose (19); The experimental system includes a heating curtain plate (12), a powder spraying device (13), an energy absorption box (14) and a fan (20); the middle of the horizontal tube (10) is sealed by the heating curtain plate (12) or the powder spraying device (13), and according to the test requirements, the heating curtain plate (12) or the powder spraying device (13) is loaded in the middle of the horizontal tube (10) to realize the switching of different gas treatment methods; the energy absorption box (14) is connected to one end of the horizontal tube (10) close to the second vertical pipe (15) through a flange to load the test material; the end of the hose (19) away from the butterfly valve (18) is connected to the fan (20), and the fan (20) is fixed on the movable bracket (1); The air outlet of the fan (20) is connected to an exhaust gas treatment system, and the exhaust gas treatment system is used to purify the exhaust gas generated by the experiment; The gas generation system, piping system, experimental system, and tail gas treatment system are all electrically connected to a computer control system to perform test control and obtain test data of each system.

2. A multifunctional ventilation performance test and explosion toxic gas treatment test bench according to claim 1, characterized in that: The horizontal pipe (10) is equipped with a temperature and humidity sensor I (C3), a pressure sensor I (C2) and a pressure sensor II (C4) for monitoring the temperature and humidity in front of the curtain plate and the pipeline pressure; The second vertical pipe (15) is equipped with a temperature and humidity sensor II (C5) and a pressure sensor III (C6) for monitoring the pressure, temperature and humidity after the test material acts.

3. The multifunctional ventilation performance test and explosion toxic gas treatment test bench according to claim 1 is characterized by: The horizontal pipe (10) is provided with a first gas collection port (28) at one end close to the first vertical pipe (9), and collects the original gas generated by the explosion through a gas collection belt; A No. 2 gas collection port (29) is provided in the middle of the No. 2 vertical pipe (15), and the No. 2 gas collection port (29) is connected to three gas collection belts through a three-way pipe. Solenoid valves are provided on the three gas collection belts connected to the No. 2 gas collection port (29), and the solenoid valves are connected to a computer control system for controlling the safe timing collection of gas.

4. The multifunctional ventilation performance test and explosion toxic gas treatment test bench according to claim 1 is characterized by: The outlet pipe (17) is provided with a differential pressure sensor (C8) and a wind speed sensor (C7) for monitoring the wind speed in the pipeline and the working pressure of the fan (20); A fan bracket (21) is provided at the bottom of the fan (20), and the fan (20) is fixed to the movable bracket (1) through the fan bracket (21). A vibration sensor (C9) is installed on the fan bracket (21) for monitoring the vibration frequency of the fan (20) when it is working; a power meter is connected between the fan (20) and the computer control system for monitoring the operating power of the fan (20).

5. A multifunctional ventilation performance test and explosion toxic gas treatment test bench according to any one of claims 1 to 4, characterized in that: The heating curtain plate (12) comprises a heating plate fixing frame (121), an electric heating plate (122) and a gauze (123); the heating plate fixing frame (121) is connected to the horizontal pipe (10) via a flange; the electric heating plate (122) is horizontally equidistantly welded in the heating plate fixing frame (121) and connected to a computer control system via waterproof wires; the gauze (123) is vertically installed on both sides of the heating plate fixing frame (121) to prevent the test material from escaping.

6. A multifunctional ventilation performance test and explosion toxic gas treatment test bench according to any one of claims 1 to 4, characterized in that: The powder spraying device (13) includes a spray head (131), a powder storage tank (132), a powder spraying pipeline (133) and a powder spraying electromagnetic valve (134); The spray head (131) is installed in the horizontal pipe (10), and one end of the powder spraying pipeline (133) penetrates into the horizontal pipe (10) and is connected to the spray head (131); the powder storage tank (132) and the powder spraying electromagnetic valve (134) are installed on the powder spraying pipeline (133) located outside the horizontal pipe (10), and the powder spraying electromagnetic valve (134) is relatively located on the side of the powder storage tank (132) away from the spray head (131); the powder storage tank (132) is used to store the powder material to be tested, and the powder spraying electromagnetic valve (134) is connected to a computer control system for controlling the powder spraying time; the other end of the powder spraying pipeline (133) away from the spray head (131) is connected to a high-pressure gas cylinder (2) containing air for providing power for powder spraying.

7. The multifunctional ventilation performance test and explosion toxic gas treatment test bench according to claim 1 is characterized by: The energy absorbing box (14) is provided with an energy absorbing seat (141) made of stainless steel. Four chair legs are respectively provided at the front and rear corners of the energy absorbing seat (141) for fixing the energy absorbing material in the energy absorbing box (14). A circular hole is provided in the middle of the energy absorbing seat (141) for removing the energy absorbing material. After the material to be tested is mounted on the energy absorbing seat (141), two sets of strain gauges (C10) are mounted on the material to be tested. The strain gauges (C10) are connected to a dynamic data acquisition instrument, which is connected to a computer control system for dynamically acquiring the deformation of the material to be tested.

8. The multifunctional ventilation performance test and explosion toxic gas treatment test bench according to claim 1 is characterized by: The tail gas treatment system comprises a vertical elbow pipe (22), a spray box (23), a water pipe (24), a circulating water pump (25) and an exhaust pipe (26); one end of the vertical elbow pipe (22) is connected to the fan (20), and the other end is connected to the bottom of the spray box (23); the top of the spray box (23) is connected to the exhaust pipe (26); the circulating water pump (25) is connected to the water pipe (24), and the end of the water pipe (24) away from the circulating water pump (25) penetrates into the spray box (23).

9. The multifunctional ventilation performance test and explosion toxic gas treatment test bench according to claim 1 is characterized by: The computer control system includes an operating system and a data acquisition system. The operating system controls the opening and closing of each solenoid valve through the output switching value of the relay. Each sensor is connected to the PLC and integrated into the data acquisition system. The operating system is provided with safety buttons, including a main power button, a power lock button, a program emergency stop button, and a power emergency stop button, to ensure the operational safety of the experimental process; The operating system is also provided with action buttons, including an ignition start button, a powder spray start button, a water pump start button, a water pump stop button, a thermal curtain start button, a thermal curtain stop button and a gas collection start button, and all action buttons are normally open buttons; The operating system is equipped with two modes: manual and automatic. The manual mode is used to test each switch action individually, while the automatic mode is used to coordinate the actions of ignition, powder spraying, and reaction gas timing collection. The delay time range is 0.01s-10s, which is used for short-term timing data collection after the explosion. In view of the two gas handling methods of the powder spraying device (13) and the heating curtain plate (12), the operating system is also provided with two modes, powder spraying and heating, which can be switched for use; The data acquisition system is used to collect data measured by various sensors and monitoring instruments.

10. A multifunctional ventilation performance test and explosion toxic gas treatment test bench according to any one of claim 1, characterized in that: The multifunctional ventilation performance test and explosion toxic gas disposal test bench can be used for any one or more of fan performance test, toxic gas elimination test, energy absorption and pressure relief test under normal conditions, as well as any one or more of fan performance test, toxic gas elimination test, energy absorption and pressure relief test under catastrophic conditions.

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