Powder gas leakage diffusion monitoring physical simulation system and method

Abstract

The invention discloses a powder gas leakage diffusion monitoring physical simulation system and method. According to the system, a plurality of gas energy control doors are sequentially installed in a simulation box body in the length direction; the dry powder aerosol generator, the smoke generator, the temperature generator, the humidity generator, the pressure controller and the toxic gas standard gas cylinder are connected with the head end of the simulation box body; the smoke exhaust fan is connected with the tail end of the simulation box body; the recycling and filtering device is connected with the smoke exhaust fan; the gas treatment tank is connected with the recycling and filtering device; the multi-parameter integrated detection unit is arranged in the cavity space of the simulation box body; the armored heating jacket is coated outside the simulation box body; the data processing platform is connected with the multi-parameter integrated detection unit; the method comprises the following steps: the system sets a simulation environment; simulating a leakage diffusion process; analyzing the spatial and temporal distribution condition of the multi-dimensional monitoring data to obtain a diffusion path and a concentration change trend of the leaked substance, and displaying a simulation result in real time. According to the system and the method, the powder gas leakage diffusion process under different environment parameter combination conditions can be simulated.

Description

Technical Field

[0001] The present invention belongs to the technical field of toxic and harmful gas leakage monitoring, and in particular relates to a physical simulation system and method for monitoring powder gas leakage and diffusion. Background Art

[0002] Current industrial monitoring methods for gas leaks are relatively simple, relying mostly on single-parameter sensors and lacking dynamic simulation of the leakage diffusion process. Furthermore, some monitoring devices can only monitor gas concentration, failing to comprehensively consider the impact of environmental factors such as temperature, pressure, and humidity on the diffusion path. Furthermore, simulation analysis of mixed dust and gas leaks is difficult. Specifically, existing technologies suffer from the following main drawbacks: (1) Insufficient simulation capability: It is impossible to fully reproduce the spatiotemporal dynamic distribution of powder gas leakage under different environmental conditions, and it is difficult to accurately obtain the diffusion path and concentration distribution data.

[0003] (2) Incomplete parameter coverage: Most devices do not integrate functions such as temperature and humidity control and are unable to simulate leakage conditions in complex industrial scenarios.

[0004] (3) Limited detection range: Due to the lack of effective detection methods, it is difficult to detect the composition of the mixed gas.

[0005] Therefore, there is an urgent need to provide a physical simulation system and method for monitoring powder gas leakage and diffusion with strong simulation capability, complete parameter coverage and high detection accuracy. Summary of the Invention

[0006] In response to the problems existing in the above-mentioned prior art, the present invention provides a physical simulation system and method for monitoring powder gas leakage and diffusion. The system has a simple structure, low manufacturing cost, diverse functions, high intelligence, and low manual intervention. It can realize the coupled simulation process of multiple physical fields, and can simulate the powder gas leakage and diffusion process under different humidity, different humidity and different pressure combination conditions, and can obtain the diffusion path and concentration change trend of the leaked substance by analyzing multi-source monitoring data; the method has a simple implementation process, low implementation cost, few manual intervention links, high test efficiency, and accurate simulation data. It has full-parameter simulation capabilities, can simulate powder gas leakage and diffusion conditions under different environmental parameters, and can monitor the spatiotemporal dynamic changes of the diffusion of gas, dust, and particles in real time, can reproduce the diffusion path and concentration distribution under the influence of complex environmental conditions, and can provide reliable data support for real leakage warning and safety analysis.

[0007] To achieve the above-mentioned object, the present invention provides a physical simulation system for monitoring powder gas leakage and diffusion, comprising a box support, a simulation box, a gas energy control door, a dry powder aerosol generator, a smoke generator, a temperature generator, a humidity generator, a pressure controller, a toxic gas standard gas cylinder, a recovery filter device, a smoke exhaust fan, a gas treatment pool, a multi-parameter integrated detection unit, an automatic heat preservation component, and a data processing platform; The simulation box is installed at the upper end of the box support, and the front end thereof is provided with air outlets 1 to 8 in sequence, and the rear end thereof is provided with air outlet 9; A plurality of gas energy control doors are sequentially installed in the simulation box along the length direction, and the inner cavity of the simulation box is sequentially divided into a plurality of chamber spaces; The outlet of the dry powder aerosol generator is connected to gas port 1 via connecting pipe 1; the outlet of the smoke generator is connected to gas port 2 via connecting pipe 2; the outlet of the temperature generator is connected to gas port 3 via connecting pipe 3; the outlet of the humidity generator is connected to gas port 4 via connecting pipe 4, and its return air port is connected to gas port 5 via connecting pipe 5; the outlet of the pressure controller is connected to gas port 6 via connecting pipe 6, and its return air port is connected to gas port 7 via connecting pipe 7; the outlet of the toxic gas standard gas cylinder is connected to gas port 8 via connecting pipe 8; The inlet end of the recovery filter device is connected to the air outlet 9 through the exhaust pipe; the smoke exhaust fan is connected in series to the middle section of the exhaust pipe; The air inlet of the gas treatment pool is connected to the outlet end of the recovery and filtering device through an air suction pipeline; Multiple multi-parameter integrated detection units are installed one by one in the multiple chamber spaces, and are used to detect sulfur dioxide concentration signals, ammonia concentration signals, hydrogen sulfide concentration signals, nitric oxide concentration signals, carbon monoxide concentration signals, carbon dioxide concentration signals, total volatile organic compound concentration signals, particulate matter concentration signals, aerosol concentration signals, pressure signals, temperature signals, and humidity signals in the corresponding chamber spaces; The automatic heat preservation component includes an armored heating jacket and a temperature controller, wherein the armored heating jacket is covered on the outside of the simulation box; the temperature controller is connected to the heating power supply and the armored heating jacket respectively; The data processing platform is connected to a plurality of multi-parameter integrated detection units respectively.

[0008] Furthermore, in order to facilitate the realization of fully automated control, and at the same time, in order to be able to remind relevant personnel to take emergency measures in a timely manner by warning in the event of abnormal working conditions, and in order to enable relevant personnel to intuitively observe the multi-source monitoring data obtained in the simulation process, the data processing platform includes a controller, an alarm module, an information transmission module and a display. The controller is respectively connected to the multi-parameter integrated detection unit, the gas energy control gate, the dry powder aerosol generator, the smoke generator, the temperature generator, the humidity generator, the pressure controller, the smoke exhaust fan, the recovery filter device, the gas treatment pool, the temperature controller, the alarm module, the information transmission module and the display. Through the setting of the information transmission module, the warning information generated by the controller under abnormal working conditions can be easily sent to the handheld terminal of the relevant personnel by wireless or wired means, so that the relevant personnel at the remote end can be informed of the abnormal situation in a timely manner, so that they can take necessary emergency measures in a timely manner.

[0009] Furthermore, in order to flexibly combine different numbers of single-section boxes to achieve combination settings of different experimental scenarios, the simulation box is composed of multiple single-section boxes distributed in sequence along the length direction; the gas energy control door is installed between two adjacent single-section boxes.

[0010] Furthermore, in order to facilitate overall movement, rollers are installed at the bottom of the box support.

[0011] Furthermore, in order to facilitate maintenance operations, an inspection door is provided on the side of the single-stage box; as a preferred embodiment, the number of the single-stage box is seven, and the number of the gas energy control doors is six.

[0012] As a preferred embodiment, the parameter integrated detection unit integrates a sulfur dioxide sensor, an ammonia sensor, a hydrogen sulfide sensor, a nitric oxide sensor, a carbon monoxide sensor, a carbon dioxide sensor, a TVOC gas sensor, a particulate matter concentration sensor, an aerosol concentration sensor, a pressure sensor, a temperature sensor and a humidity sensor.

[0013] In the present invention, multiple gas energy control doors are used to divide the inner cavity of the simulation box into multiple chamber spaces, which can conveniently control the connecting channels between the chamber spaces, thereby simulating the airflow diffusion process of different connecting cross-sectional areas, which is conducive to meeting a variety of test conditions. An air outlet is opened at the head end of the simulation box, and a dry powder aerosol generator, a toxic gas standard gas cylinder, a smoke generator, a humidity generator, a temperature generator and a pressure controller are connected respectively through connecting pipes. On the one hand, the temperature generator, the humidity generator and the pressure controller can be used to adjust the temperature, humidity and pressure conditions inside the simulation box. On the other hand, the dry powder aerosol generator can be used to generate dust aerosol and supply it to the simulation box to simulate the diffusion condition of dust. At the same time, the toxic gas standard gas cylinder can be used to supply toxic gas of a set concentration to simulate the joint diffusion process of toxic gas and dust. Furthermore, the smoke generator can be used to generate smoke and supply it to the simulation box to simulate the mixed diffusion condition of dust, toxic gas and smoke. In this way, the leakage condition of a mixture of dust, smoke and toxic gas can be effectively simulated, which can provide reliable technical support for complex mixed leakage research. Connecting the smoke exhaust fan to the air outlet at the end of the simulation box can facilitate the provision of drainage negative pressure for the simulation box. This ensures that the dust, smoke, and toxic gases supplied from the head end of the simulation box can flow from the head end to the tail end, thereby achieving a more ideal diffusion effect of the dust, smoke, and toxic gases. Connecting a recovery filter device to the exhaust port of the smoke exhaust fan can facilitate the use of the recovery filter device to remove the discharged dust particles. Connecting the gas treatment tank to the recovery filter device can facilitate the use of the gas treatment tank to remove toxic substances in the gas, thereby ensuring that the gas discharged into the atmosphere is clean gas and preventing environmental pollution. The independent installation of multi-parameter integrated detection units in each chamber space facilitates the detection of O2 concentration, N2 concentration, CO2 concentration, dust aerosol concentration, smoke concentration, temperature, humidity and pressure in each chamber space, thereby facilitating real-time understanding of multi-source monitoring data at different locations of the simulation box, facilitating accurate analysis of the spatiotemporal distribution of multi-source monitoring data, and based on this analysis process, obtaining the diffusion path and concentration change trend of the leaked substance. The automatic insulation component facilitates the heating of the simulation box, so that the temperature inside the simulation box can be quickly brought to the required temperature range in conjunction with the temperature generator. At the same time, it also facilitates the insulation of the simulation box, thereby avoiding the loss of temperature inside the simulation box, ensuring the simulation effect, and effectively saving energy consumption. The data processing platform facilitates the centralized processing and analysis of the collected signals.The simulation system in the present invention adopts a modular design, and the functional modules can be quickly assembled and detached, which is convenient for maintenance and upgrading. At the same time, different experimental scenarios can be flexibly combined according to needs.

[0014] The system has a simple structure, low manufacturing cost, diverse functions, high intelligence, and minimal human intervention. It can realize the coupled simulation process of multiple physical fields, simulate the powder gas leakage and diffusion process under different humidity and different humidity and pressure combinations, and obtain the diffusion path and concentration change trend of the leaked material by analyzing multi-source monitoring data. Using this simulation system for simulation experiments can effectively approach actual industrial leakage scenarios and significantly improve experimental efficiency and the stability of detection data. It has a wide range of application scenarios and can be applied to leakage warning, diffusion path simulation, and environmental safety analysis processes in various industrial scenarios such as coke oven gas pipelines, gas transmission corridors, and underground integrated pipeline corridors. It can provide reliable data support for the design of leakage monitoring and early warning solutions in different locations.

[0015] The present invention also provides a physical simulation method for monitoring powder gas leakage and diffusion, which uses a physical simulation system for monitoring powder gas leakage and diffusion, including the following steps: Step 1: Assembly of simulation system; Select the number of single-stage boxes and gas energy control doors according to simulation requirements, and complete the assembly of the simulation system; Step 2: Setting up the simulation environment; Control the pressure controller to start working and adjust the pressure environment in the simulation box to within the set pressure range; control the humidity generator to start working and adjust the humidity environment in the simulation box to within the set humidity range; control the temperature generator to start working and adjust the temperature environment in the simulation box, and control the temperature controller to connect the connection circuit between the heating power supply and the armored heating jacket, use the armored heating jacket to heat the inner cavity of the simulation box, and maintain the temperature environment in the simulation box within the set temperature range through the combined action of the temperature generator and the armored heating jacket, and use the armored heating jacket to keep the simulation box warm; Step 3: Leakage diffusion process simulation; Control multiple airflow energy control doors to open; control the exhaust fan to start working, synchronously control the gas treatment pool to start working, provide drainage negative pressure to the inner cavity of the simulation box, and at the same time, control the dry powder aerosol generator to start working to generate dust aerosol, use the drainage negative pressure to guide the dust aerosol from the head end to the end of the simulation box, and use the recovery filter device to filter the gas discharged by the exhaust fan to effectively remove dust particles in the gas, and use the gas treatment pool to purify the gas discharged by the recovery filter device to eliminate toxic substances, and then discharge the clean gas after filtering and purification into the atmosphere; At the same time, a multi-parameter integrated detection unit is used to collect multi-dimensional monitoring signals in multiple chamber spaces in real time, and the multi-dimensional monitoring signals are sent to the controller. The controller obtains multi-dimensional monitoring data in the multiple chamber spaces based on the multi-dimensional monitoring signals, and sends the multi-dimensional monitoring data to the display for real-time display; the multi-dimensional monitoring data includes O2 concentration data, N2 concentration data, CO2 concentration data, dust aerosol concentration data, smoke concentration data, temperature data, humidity signal and pressure data; At the same time, the O2 concentration data, N2 concentration data, CO2 concentration data, dust aerosol concentration data, smoke concentration data, temperature data, humidity signal and pressure data are respectively compared with the set O2 concentration threshold, set N2 concentration threshold, set CO2 concentration threshold, set dust aerosol concentration threshold, set smoke concentration threshold, set temperature threshold, set humidity threshold and set pressure threshold. When any monitoring data exceeds the limit condition, the control alarm module executes the corresponding warning action and sends the corresponding warning information to the handheld terminal of the relevant personnel through the information transmission module; Step 4: Simulation data acquisition; Based on the multi-dimensional monitoring data in multiple single-segment boxes, the controller analyzes the spatiotemporal distribution of the multi-dimensional monitoring data, and obtains the diffusion path and concentration change trend of the leaked material based on the analysis results. At the same time, the diffusion path and concentration change trend of the leaked material are sent to the display for real-time display.

[0016] As a preferred embodiment, in step three, the smoke generator is synchronously controlled to start working to generate smoke; the dust aerosol and smoke are synchronously drained from the head end to the end end of the simulation box using the drainage negative pressure to simulate the working condition of powder-gas mixing leakage.

[0017] As a preferred embodiment, in step three, the exhaust valve of the toxic gas standard gas cylinder is synchronously controlled to open, so that the toxic gas standard gas cylinder discharges toxic gas of a set concentration; the dust aerosol, smoke and toxic gas are synchronously drained from the head end to the end end of the simulation box using the drainage negative pressure to simulate the working condition of powder-gas mixing leakage.

[0018] As a preference, in step three, the energy of the airflow is adjusted by adjusting the different openings of multiple airflow energy control doors to simulate the diffusion path under different leakage scenarios.

[0019] The present invention provides a physical simulation method for monitoring powder gas leakage. First, a specific number of single-section boxes are used to assemble the simulation box as needed, flexibly meeting simulation requirements for different diffusion path lengths. Second, a pressure controller, temperature generator, and humidity generator are used to adjust the environment within the simulation box, enabling simulation environments under different pressure, humidity, and temperature combinations. This method thus possesses full-parameter simulation capabilities and provides an environmental basis for the leakage and diffusion process of dust under different environmental parameters (pressure, humidity, and temperature). Next, a dry powder aerosol generator is used to generate dust aerosol, and the exhaust fan's drainage effect causes the dust aerosol to diffuse from the front end of the simulation box toward the rear end, allowing for intuitive observation of dust diffusion. Furthermore, during the simulation process, a multi-parameter integrated detection unit is used to collect multidimensional monitoring signals in each chamber space, facilitating real-time perception of multidimensional monitoring data at different locations. During the monitoring process, the acquired multidimensional monitoring data is compared in real time with the corresponding alarm thresholds. When an over-limit condition occurs, the alarm module is controlled to promptly initiate a warning action. Simultaneously, warning information is sent via the information transmission module, prompting relevant personnel to pay attention to the abnormal situation and enabling them to take necessary safety measures, thus ensuring the safety and reliability of the simulation process. A recovery filter device and a gas treatment tank are connected to the exhaust end of the exhaust fan. The recovery filter device removes dust particles from the gas, while the gas treatment tank removes toxic substances from the gas, ensuring that the gas discharged into the atmosphere is clean and meets environmental requirements. Based on the multidimensional monitoring data from multiple single-stage chambers, the controller obtains the spatiotemporal distribution of the multidimensional monitoring data and further determines the diffusion path and concentration trend of the leaked material. This allows the simulation to collect process data on dust gas leakage under various complex operating conditions and capture the diffusion characteristics at different stages. This provides reliable data support for dust leak warnings, diffusion path simulation, and environmental safety analysis, further enhancing the emergency response to real-world leakage incidents.

[0020] This method has a simple implementation process, low implementation cost, few manual intervention links, high test efficiency, and accurate simulation data. It has full-parameter simulation capabilities, can simulate powder gas leakage and diffusion conditions under different environmental parameters, and can monitor the spatiotemporal dynamic changes of gas, dust, and particle diffusion in real time. It can reproduce the diffusion path and concentration distribution under complex environmental conditions, and can provide reliable data support for real leakage warning and safety analysis. It can cover typical working conditions in the steel, coking and other industries, and is especially suitable for leakage simulation in various industrial scenarios such as coke oven gas pipelines, gas transmission corridors, and underground integrated corridors. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is an assembly diagram of the single-stage box and the gas energy control door in the present invention; Figure 3 It is a control principle block diagram of the simulation system of the present invention.

[0022] In the figure: 1. Box bracket, 2. Simulation box, 3. Smoke exhaust fan, 4. Recovery filter device, 5. Connecting pipe eight, 6. Gas treatment pool, 7. Intake pipe, 8. Toxic gas standard gas cylinder, 9. Controller, 10. Information transmission module, 11. Dry powder aerosol generator, 12. Smoke generator, 13. Temperature generator, 14. Humidity generator, 15. Pressure controller, 16. Connecting pipe one, 17. Connecting pipe two, 18. Connecting pipe three, 19. Connecting pipe four, 20. Connecting pipe five, 21. Connecting pipe six, 22. Connecting pipe seven, 23. Roller, 24. Gas energy control door, 25. Chamber space, 26. Display, 27. Single-section box, 28. Multi-parameter integrated detection unit, 29. Inspection door, 30. Exhaust pipe, 31. Exhaust pipe. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figures 1 to 3 As shown, the present invention provides a physical simulation system for monitoring powder gas leakage and diffusion, comprising a box support 1, a simulation box 2, a gas energy control door 24, a dry powder aerosol generator 11, a smoke generator 12, a temperature generator 13, a humidity generator 14, a pressure controller 15, a toxic gas standard gas cylinder 8, a recovery filter device 4, a smoke exhaust fan 3, a gas treatment pool 6, a multi-parameter integrated detection unit 28, an automatic heat preservation component and a data processing platform; The simulation box 2 is installed at the upper end of the box support 1, and its head end is provided with air outlets 1 to 8 in sequence, and its tail end is provided with air outlet 9; the simulation box 2 is used to simulate the leakage environment; A plurality of gas energy control doors 24 are sequentially installed in the simulation box 2 along the length direction, and the inner cavity of the simulation box 2 is sequentially divided into a plurality of chamber spaces 25; The outlet of the dry powder aerosol generator 11 is connected to the air outlet 1 via a connecting pipe 16. The dry powder aerosol generator 11 can provide dust aerosol with uniform concentration and particle size ranging from nanometers to micrometers for a long time. The scraping rate and gas volume are controllable, and it is used to generate dust aerosol to simulate dust leakage scenarios. The outlet of the smoke generator 12 is connected to the second air outlet via a second connecting pipe 17. The smoke generator 12 is a smoke generator specially designed for fire drills, which uses a water-based solvent heating atomization technology to support the continuous release of visual smoke and can be remotely controlled or timed and quantitatively controlled. The outlet of the temperature generator 13 is connected to the air outlet 3 through the connecting pipe 3 18; the temperature generator 13 adopts a wind tunnel structure, and the temperature can be adjusted in the range of 0-1000°C, which is used to adjust the temperature conditions in the simulation box 2; The outlet of the humidity generator 14 is connected to the air outlet 4 via a connecting pipe 4 19, and its return air port is connected to the air outlet 5 via a connecting pipe 5 20. The humidity generator 14 controls the humidity through a humidifier and is equipped with a tail-end dehumidification device for adjusting the humidity conditions in the simulation box 2, with an adjustable range of 0-80% humidity. The air outlet of the pressure controller 15 is connected to the air port 6 through the connecting pipe 6 21, and the air return port is connected to the air port 7 through the connecting pipe 7 22, and is used to adjust the pressure conditions in the simulation box 2, and the adjustable range is 0.6-2.5atm; The gas outlet of the toxic gas standard gas cylinder 8 is connected to the gas outlet 8 through a connecting pipe 8 5; The inlet end of the recovery filter device 4 is connected to the air outlet 9 through the exhaust pipe 31; the exhaust fan 3 is connected in series to the middle section of the exhaust pipe 31; The air inlet of the gas treatment pool 6 is connected to the outlet end of the recovery filter device 4 through the air intake pipe 7, which is used to purify and eliminate the toxic gas discharged by the recovery filter device 4 to ensure that the gas discharged into the atmosphere is a clean air flow, thereby avoiding air pollution. As a preferred embodiment, the gas treatment pool 6 is made of 304 stainless steel with solid solution treatment, with an outer dimension of 100×1000 mm, CF100 flanges are used for sealing at both ends, and 100 mm zinc selenide windows (2-16 μm) are installed. The leak rate is ensured to be ≤1×10e by helium mass spectrometry. -10 pa.m 3 / s; preferably, the outer surface of the gas treatment pool 6 is covered with a constant temperature heating jacket, the constant temperature heating jacket is connected to the heating power supply for the gas treatment pool 6 to be insulated and temperature controlled to ensure the purification effect of toxic gases; A plurality of multi-parameter integrated detection units 28 are installed one by one in the multi-section chamber space 25. As a preferred embodiment, the multi-parameter integrated detection unit 28 integrates a sulfur dioxide sensor (electrochemical sensor), an ammonia sensor (electrochemical sensor), a hydrogen sulfide sensor (electrochemical sensor), a nitric oxide sensor (electrochemical sensor), a carbon monoxide sensor (electrochemical sensor), a carbon dioxide sensor (infrared sensor), a TVOC gas sensor (electrochemical sensor), a particulate matter concentration sensor (laser scattering sensor), an aerosol concentration sensor (laser scattering sensor), a pressure sensor, a temperature sensor and a humidity sensor, which are respectively used to detect the sulfur dioxide (SO2) concentration signal in the corresponding chamber space 25, Ammonia (NH3) concentration signal, hydrogen sulfide (H2S) concentration signal, nitric oxide (NO) concentration signal, carbon monoxide (CO) concentration signal, carbon dioxide (CO2) concentration signal, total volatile organic compound concentration signal (TVOC), particulate matter concentration signal, aerosol concentration signal, pressure signal, temperature signal and humidity signal; among them, electrochemical sensors quickly and accurately measure the concentration of gases through electrochemical reactions; infrared sensors use the absorption characteristics of gases to infrared light of specific wavelengths to achieve rapid and accurate detection of CO2 concentration; aerosol concentration sensors use laser detection of light scattering to measure the concentration of gas particles and dust aerosols; particulate matter concentration sensors use laser detection of light scattering to detect smoke concentration.

[0025] As a priority, the response time of the multi-parameter integrated detection unit 28 is <10S (T90), which can achieve rapid determination of gas composition and diffusion concentration, and provide reliable data support for accident emergency response.

[0026] The automatic heat preservation component includes an armored heating jacket and a temperature controller. The armored heating jacket is coated on the outside of the simulation box 2 and also has a heat preservation function. The temperature controller is respectively connected to the heating power supply and the armored heating jacket. The data processing platform is connected to a plurality of multi-parameter integrated detection units 28 respectively.

[0027] In order to facilitate the realization of fully automated control, and at the same time, to remind relevant personnel to take emergency measures in a timely manner by issuing an alarm when an abnormal working condition occurs, and to enable relevant personnel to intuitively observe the multi-source monitoring data obtained during the simulation process, the data processing platform includes a controller 9, an alarm module, an information transmission module 10, and a display 26. The controller 9 is respectively connected to the multi-parameter integrated detection unit 28, the gas energy control gate 24, the dry powder aerosol generator 11, the smoke generator 12, the temperature generator 13, the humidity generator 14, the pressure controller 15, the smoke exhaust fan 3, the recovery filter device 4, the gas treatment tank 6, the temperature controller, the alarm module, the information transmission module 10, and the display 26. Through the provision of the information transmission module, the warning information generated by the controller under abnormal working conditions can be conveniently sent to the handheld terminal of the relevant personnel via wireless or wired means, so that the relevant personnel at the remote end can be informed of the abnormal situation in a timely manner and can take necessary emergency measures in a timely manner.

[0028] As a preferred embodiment, the display 26 is supported above the middle section of the simulation box 2; In order to have an offline simulation test capability, a power supply module is also included, and the power supply module is used to supply electricity to each electrical component.

[0029] As a preference, the controller 9 is connected to the multi-parameter integrated detection unit 28 via the RS485 transmission protocol; In order to flexibly combine different numbers of single-segment boxes to achieve combined settings for different experimental scenarios, the simulation box 2 is composed of multiple single-segment boxes 27 distributed in sequence along the length direction; the gas energy control door 24 is installed between two adjacent single-segment boxes 27. Preferably, the two adjacent single-segment boxes 27 are connected by flanges, and the gas energy control door 24 is pressed and fixed between the two adjacent single-segment boxes 27; In order to facilitate the movement of the whole, a roller 23 is installed at the bottom of the box support 1. Preferably, the roller 23 is a roller 23 with a brake device, so that after moving to a specific location, it is easy to fix the whole to ensure stability during the simulation test.

[0030] In order to facilitate maintenance work, an inspection door 29 is provided on the side of the single-stage box 27. Preferably, the inspection door 29 is connected to the single-stage box 27 with bolts; As a preference, the number of the single-stage boxes 27 is seven, and the number of the gas energy control doors 24 is six.

[0031] In the present invention, multiple gas energy control doors are used to divide the inner cavity of the simulation box into multiple chamber spaces, which can conveniently control the connecting channels between the chamber spaces, thereby simulating the airflow diffusion process of different connecting cross-sectional areas, which is conducive to meeting a variety of test conditions. An air outlet is opened at the head end of the simulation box, and a dry powder aerosol generator, a toxic gas standard gas cylinder, a smoke generator, a humidity generator, a temperature generator and a pressure controller are connected respectively through connecting pipes. On the one hand, the temperature generator, the humidity generator and the pressure controller can be used to adjust the temperature, humidity and pressure conditions inside the simulation box. On the other hand, the dry powder aerosol generator can be used to generate dust aerosol and supply it to the simulation box to simulate the diffusion condition of dust. At the same time, the toxic gas standard gas cylinder can be used to supply toxic gas of a set concentration to simulate the joint diffusion process of toxic gas and dust. Furthermore, the smoke generator can be used to generate smoke and supply it to the simulation box to simulate the mixed diffusion condition of dust, toxic gas and smoke. In this way, the leakage condition of a mixture of dust, smoke and toxic gas can be effectively simulated, which can provide reliable technical support for complex mixed leakage research. Connecting the smoke exhaust fan to the air outlet at the end of the simulation box can facilitate the provision of drainage negative pressure for the simulation box. This ensures that the dust, smoke, and toxic gases supplied from the head end of the simulation box can flow from the head end to the tail end, thereby achieving a more ideal diffusion effect of the dust, smoke, and toxic gases. Connecting a recovery filter device to the exhaust port of the smoke exhaust fan can facilitate the use of the recovery filter device to remove the discharged dust particles. Connecting the gas treatment tank to the recovery filter device can facilitate the use of the gas treatment tank to remove toxic substances in the gas, thereby ensuring that the gas discharged into the atmosphere is clean gas and preventing environmental pollution. The independent installation of multi-parameter integrated detection units in each chamber space facilitates the detection of O2 concentration, N2 concentration, CO2 concentration, dust aerosol concentration, smoke concentration, temperature, humidity and pressure in each chamber space, thereby facilitating real-time understanding of multi-source monitoring data at different locations of the simulation box, facilitating accurate analysis of the spatiotemporal distribution of multi-source monitoring data, and based on this analysis process, obtaining the diffusion path and concentration change trend of the leaked substance. The automatic insulation component facilitates the heating of the simulation box, so that the temperature inside the simulation box can be quickly brought to the required temperature range in conjunction with the temperature generator. At the same time, it also facilitates the insulation of the simulation box, thereby avoiding the loss of temperature inside the simulation box, ensuring the simulation effect, and effectively saving energy consumption. The data processing platform facilitates the centralized processing and analysis of the collected signals.The simulation device in the present invention adopts a modular design, and the functional modules can be quickly assembled and detached, which is convenient for maintenance and upgrading. At the same time, different experimental scenarios can be flexibly combined according to needs.

[0032] The system has a simple structure, low manufacturing cost, diverse functions, high intelligence, and minimal human intervention. It can realize the coupled simulation process of multiple physical fields, simulate the powder gas leakage and diffusion process under different humidity and different humidity and pressure combinations, and obtain the diffusion path and concentration change trend of the leaked material by analyzing multi-source monitoring data. Using this simulation system for simulation experiments can effectively approach actual industrial leakage scenarios and significantly improve experimental efficiency and the stability of detection data. It has a wide range of application scenarios and can be applied to leakage warning, diffusion path simulation, and environmental safety analysis processes in various industrial scenarios such as coke oven gas pipelines, gas transmission corridors, and underground integrated pipeline corridors. It can provide reliable data support for the design of leakage monitoring and early warning solutions in different locations.

[0033] The present invention also provides a physical simulation method for monitoring powder gas leakage and diffusion, which uses a physical simulation system for monitoring powder gas leakage and diffusion, including the following steps: Step 1: Assembly of simulation system; The number of single-stage boxes 27 and gas energy control doors 24 is selected according to the simulation requirements, and multiple single-stage boxes 27 are connected in sequence using flanges to form a simulation box 2, and the gas energy control door 24 is fixed between two adjacent single-stage boxes 27; a multi-parameter integrated detection unit 28 is installed in the single-stage box 27, and connections are established between the smoke exhaust fan 3, dry powder aerosol generator 11, smoke generator 12, temperature generator 13, humidity generator 14, pressure controller 15, toxic gas standard gas cylinder 8 and the simulation box 2; the armored heating sleeve is installed on the outside of the simulation box 2; a connection is established between the recovery filter device 4 and the smoke exhaust fan 3; a connection is established between the gas treatment pool 6 and the recovery filter device 4; a communication connection is established between the data processing platform and the multi-parameter integrated detection unit 28; and the assembly of the simulation system is completed; Step 2: Setting up the simulation environment; The pressure controller 15 is controlled to start working and adjust the pressure environment in the simulation box 2 to within the set pressure range; the humidity generator 14 is controlled to start working, gas of corresponding humidity is input into the simulation box 2, and the humidity environment in the simulation box 2 is adjusted to within the set humidity range; the temperature generator 13 is controlled to start working, gas of corresponding temperature is input into the simulation box 2, and the temperature environment in the simulation box 2 is adjusted, and the temperature controller is controlled to connect the connection circuit between the heating power supply and the armored heating sleeve, and the armored heating sleeve is used to heat the inner cavity of the simulation box 2. The temperature environment in the simulation box 2 is maintained within the set temperature range through the joint action of the temperature generator 13 and the armored heating sleeve, and the armored heating sleeve is used to insulate the simulation box 2; thus, the pressure controller 15, the humidity generator 14 and the temperature generator 13 can be comprehensively utilized to create different environmental conditions (high temperature and high humidity, low temperature and low humidity, high temperature, high temperature and high pressure, low temperature, low pressure and low pressure, etc.) in the simulation box 2, so as to more fully study the influence of environmental factors on powder gas leakage and diffusion.

[0034] At the same time, the multi-parameter integrated detection unit 28 is used to collect the pressure signal, humidity signal and temperature signal in the simulation box 2 in real time, and send it to the controller 9. The controller 9 obtains pressure data, humidity data and temperature data based on the received pressure signal, humidity signal and temperature signal, and sends it to the display 26 for real-time display; Step 3: Leakage diffusion process simulation; Control multiple airflow energy control doors 24 to open; control the exhaust fan 3 to start working, and synchronously control the gas treatment pool 6 to start working, provide drainage negative pressure to the inner cavity of the simulation box 2, and at the same time, control the dry powder aerosol generator 11 to start working to generate dust aerosol, and use the drainage negative pressure to guide the dust aerosol from the head end to the tail end of the simulation box 2, and use the recovery filter device 4 to filter the gas discharged by the exhaust fan 3 to effectively remove dust particles in the gas, and use the gas treatment pool 6 to purify the gas discharged by the recovery filter device 4 to eliminate toxic substances, and then discharge the clean gas after filtering and purification into the atmosphere; At the same time, the multi-parameter integrated detection unit 28 is used to collect multi-dimensional monitoring signals in the multi-segment chamber space 25 in real time, and the multi-dimensional monitoring signals are sent to the controller 9. The controller 9 obtains multi-dimensional monitoring data in the multi-segment chamber space 25 based on the multi-dimensional monitoring signals, and sends the multi-dimensional monitoring data to the display 26 for real-time display; the multi-dimensional monitoring signals include O2 concentration signals, N2 concentration signals, CO2 concentration signals, dust aerosol concentration signals, smoke concentration signals, temperature signals, humidity signals and pressure signals, and the multi-dimensional monitoring data include O2 concentration data, N2 concentration data, CO2 concentration data, dust aerosol concentration data, smoke concentration data, temperature data, humidity signals and pressure data; At the same time, the O2 concentration data, N2 concentration data, CO2 concentration data, dust aerosol concentration data, smoke concentration data, temperature data, humidity signal and pressure data are respectively compared with the set O2 concentration threshold, the set N2 concentration threshold, the set CO2 concentration threshold, the set dust aerosol concentration threshold, the set smoke concentration threshold, the set temperature threshold, the set humidity threshold and the set pressure threshold. When any of the monitoring data exceeds the limit, the control alarm module executes the corresponding warning action and sends the corresponding warning information to the handheld terminal of the relevant personnel through the information transmission module 10; Step 4: Simulation data acquisition; The controller 9 analyzes the spatiotemporal distribution of the multidimensional monitoring data based on the multidimensional monitoring data in the multiple single-segment boxes 27, and obtains the diffusion path and concentration change trend of the leaked material based on the analysis results. At the same time, the diffusion path and concentration change trend of the leaked material are sent to the display 26 for real-time display to prompt relevant personnel to take corresponding protective and emergency measures.

[0035] As a preferred embodiment, in step three, the smoke generator 12 is synchronously controlled to start working to generate smoke; the dust aerosol and smoke are synchronously drained from the head end to the end end of the simulation box 2 using the drainage negative pressure to simulate the working condition of powder-gas mixing leakage.

[0036] As a preferred embodiment, in step three, the exhaust valve of the toxic gas standard gas cylinder 30 is synchronously controlled to open, so that the toxic gas standard gas cylinder 6 discharges toxic gas of a set concentration; the dust aerosol, smoke and toxic gas are synchronously drained from the head end to the end end of the simulation box 2 using the drainage negative pressure to simulate the working condition of powder-gas mixing leakage.

[0037] Preferably, in step three, the energy of the airflow is adjusted by adjusting the openings of the multiple airflow energy control doors 24 to simulate the diffusion paths under different leakage scenarios. Preferably, the openings of the multiple airflow energy control doors 14 can be increased sequentially along the airflow diffusion direction.

[0038] The present invention provides a physical simulation method for monitoring powder gas leakage. First, a specific number of single-section boxes are used to assemble the simulation box as needed, flexibly meeting simulation requirements for different diffusion path lengths. Second, a pressure controller, temperature generator, and humidity generator are used to adjust the environment within the simulation box, enabling simulation environments under different pressure, humidity, and temperature combinations. This method thus possesses full-parameter simulation capabilities and provides an environmental basis for the leakage and diffusion process of dust under different environmental parameters (pressure, humidity, and temperature). Next, a dry powder aerosol generator is used to generate dust aerosol, and the exhaust fan's drainage effect causes the dust aerosol to diffuse from the front end of the simulation box toward the rear end, allowing for intuitive observation of dust diffusion. Furthermore, during the simulation process, a multi-parameter integrated detection unit is used to collect multidimensional monitoring signals in each chamber space, facilitating real-time perception of multidimensional monitoring data at different locations. During the monitoring process, the acquired multidimensional monitoring data is compared in real time with the corresponding alarm thresholds. When an over-limit condition occurs, the alarm module is controlled to promptly initiate a warning action. Simultaneously, warning information is sent via the information transmission module, prompting relevant personnel to pay attention to the abnormal situation and enabling them to take necessary safety measures, thus ensuring the safety and reliability of the simulation process. A recovery filter device and a gas treatment tank are connected to the exhaust end of the exhaust fan. The recovery filter device removes dust particles from the gas, while the gas treatment tank removes toxic substances from the gas, ensuring that the gas discharged into the atmosphere is clean and meets environmental requirements. Based on the multidimensional monitoring data from multiple single-stage chambers, the controller obtains the spatiotemporal distribution of the multidimensional monitoring data and further determines the diffusion path and concentration trend of the leaked material. This allows the simulation to collect process data on dust gas leakage under various complex operating conditions and capture the diffusion characteristics at different stages. This provides reliable data support for dust leak warnings, diffusion path simulation, and environmental safety analysis, further enhancing the emergency response to real-world leakage incidents.

[0039] This method has a simple implementation process, low implementation cost, few manual intervention links, high test efficiency, and accurate simulation data. It has full-parameter simulation capabilities, can simulate powder gas leakage and diffusion conditions under different environmental parameters, and can monitor the spatiotemporal dynamic changes of gas, dust, and particle diffusion in real time. It can reproduce the diffusion path and concentration distribution under complex environmental conditions, and can provide reliable data support for real leakage warning and safety analysis. It can cover typical working conditions in the steel, coking and other industries, and is especially suitable for leakage simulation in various industrial scenarios such as coke oven gas pipelines, gas transmission corridors, and underground integrated corridors.

Claims

1. A physical simulation system for monitoring powder gas leakage and diffusion, comprising a box support (1) and a simulation box (2), characterized in that: It also includes a gas energy control door (24), a dry powder aerosol generator (11), a smoke generator (12), a temperature generator (13), a humidity generator (14), a pressure controller (15), a toxic gas standard gas cylinder (8), a recovery filter device (4), a smoke exhaust fan (3), a gas treatment pool (6), a multi-parameter integrated detection unit (28), an automatic heat preservation component and a data processing platform; The simulation box (2) is mounted on the upper end of the box support (1), and has air outlets 1 to 8 at intervals on its head end, and air outlet 9 at its tail end; A plurality of gas energy control doors (24) are sequentially installed in the simulation box (2) along the length direction, and the inner cavity of the simulation box (2) is sequentially divided into a plurality of chamber spaces (25); The outlet of the dry powder aerosol generator (11) is connected to the air port one through the connecting pipe one (16); the outlet of the smoke generator (12) is connected to the air port two through the connecting pipe two (17); the outlet of the temperature generator (13) is connected to the air port three through the connecting pipe three (18); the outlet of the humidity generator (14) is connected to the air port four through the connecting pipe four (19), and its return air port is connected to the air port five through the connecting pipe five (20); the air outlet of the pressure controller (15) is connected to the air port six through the connecting pipe six (21), and its return air port is connected to the air port seven through the connecting pipe seven (22); the air outlet of the toxic gas standard gas cylinder (8) is connected to the air port eight through the connecting pipe eight (5); The inlet end of the recovery filter device (4) is connected to the air outlet 9 through the exhaust pipe (31); the smoke exhaust fan (3) is connected in series to the middle section of the exhaust pipe (31); The air inlet of the gas treatment pool (6) is connected to the outlet of the recovery filter device (4) via an air suction pipeline (7); A plurality of multi-parameter integrated detection units (28) are installed in the multi-section chamber space (25) in a one-to-one correspondence, and are used to detect sulfur dioxide concentration signals, ammonia concentration signals, hydrogen sulfide concentration signals, nitrogen monoxide concentration signals, carbon monoxide concentration signals, carbon dioxide concentration signals, total volatile organic compound concentration signals, particulate matter concentration signals, aerosol concentration signals, pressure signals, temperature signals, and humidity signals in the corresponding chamber space (25); The automatic heat preservation component comprises an armored heating sleeve and a temperature controller, wherein the armored heating sleeve is covered on the outside of the simulation box (2); the temperature controller is connected to the heating power supply and the armored heating sleeve respectively; The data processing platform is respectively connected to a plurality of multi-parameter integrated detection units (28).

2. A physical simulation system for monitoring powder gas leakage and diffusion according to claim 1, characterized in that: The data processing platform includes a controller (9), an alarm module, an information transmission module (10) and a display (26), wherein the controller (9) is respectively connected to a multi-parameter integrated detection unit (28), a gas energy control gate (24), a dry powder aerosol generator (11), a smoke generator (12), a temperature generator (13), a humidity generator (14), a pressure controller (15), a smoke exhaust fan (3), a recovery filter device (4), a gas treatment pool (6), a temperature controller, an alarm module, an information transmission module (10) and a display (26).

3. A physical simulation system for monitoring powder gas leakage and diffusion according to claim 2, characterized in that: The simulation box (2) is composed of a plurality of single-segment boxes (27) distributed in sequence along the length direction; the gas energy control door (24) is installed between two adjacent single-segment boxes (27).

4. A physical simulation system for monitoring powder gas leakage and diffusion according to claim 3, characterized in that: A roller (23) is installed at the bottom of the box support (1).

5. The physical simulation system for monitoring powder gas leakage and diffusion according to claim 4 is characterized in that: An inspection door (29) is provided on the side of the single-stage box (27); the number of the single-stage box (27) is seven, and the number of the gas energy control doors (24) is six.

6. A physical simulation system for monitoring powder gas leakage and diffusion according to claim 5, characterized in that: The parameter integrated detection unit (28) is integrated with a sulfur dioxide sensor, an ammonia sensor, a hydrogen sulfide sensor, a nitrogen monoxide sensor, a carbon monoxide sensor, a carbon dioxide sensor, a TVOC gas sensor, a particulate matter concentration sensor, an aerosol concentration sensor, a pressure sensor, a temperature sensor, and a humidity sensor.

7. A physical simulation method for monitoring powder gas leakage and diffusion, using a physical simulation system for monitoring powder gas leakage and diffusion according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Assembly of simulation system; The number of single-stage boxes (27) and gas energy control doors (24) is selected according to simulation requirements, and the assembly of the simulation system is completed; Step 2: Setting up the simulation environment; Controlling the pressure controller (15) to start working and adjust the pressure environment in the simulation box (2) to within the set pressure range; controlling the humidity generator (14) to start working and adjust the humidity environment in the simulation box (2) to within the set humidity range; controlling the temperature generator (13) to start working and adjust the temperature environment in the simulation box (2), and controlling the temperature controller to connect the connection circuit between the heating power supply and the armored heating sleeve, using the armored heating sleeve to heat the inner cavity of the simulation box (2), and through the combined action of the temperature generator (13) and the armored heating sleeve, the temperature environment in the simulation box (2) is maintained within the set temperature range, and the armored heating sleeve is used to keep the simulation box (2) warm; Step 3: Leakage diffusion process simulation; Controlling the opening of multiple airflow energy control doors (24); controlling the smoke exhaust fan (3) to start working, synchronously controlling the gas treatment pool (6) to start working, providing drainage negative pressure to the inner cavity of the simulation box (2), and at the same time, controlling the dry powder aerosol generator (11) to start working to generate dust aerosol, using the drainage negative pressure to guide the dust aerosol from the head end to the end direction of the simulation box (2), and using the recovery filter device (4) to filter the gas discharged from the smoke exhaust fan (3) to effectively remove dust particles in the gas, and using the gas treatment pool (6) to purify the gas discharged from the recovery filter device (4) to eliminate toxic substances, and then discharging the clean gas after filtering and purification into the atmosphere; At the same time, a multi-parameter integrated detection unit (28) is used to collect multi-dimensional monitoring signals in the multi-section chamber space (25) in real time, and the multi-dimensional monitoring signals are sent to the controller (9). The controller (9) obtains multi-dimensional monitoring data in the multi-section chamber space (25) based on the multi-dimensional monitoring signals, and sends the multi-dimensional monitoring data to the display (26) for real-time display; the multi-dimensional monitoring data includes O2 concentration data, N2 concentration data, CO2 concentration data, dust aerosol concentration data, smoke concentration data, temperature data, humidity signal and pressure data; At the same time, the O2 concentration data, N2 concentration data, CO2 concentration data, dust aerosol concentration data, smoke concentration data, temperature data, humidity signal and pressure data are respectively compared with the set O2 concentration threshold, the set N2 concentration threshold, the set CO2 concentration threshold, the set dust aerosol concentration threshold, the set smoke concentration threshold, the set temperature threshold, the set humidity threshold and the set pressure threshold. When any of the monitoring data exceeds the limit condition, the control alarm module executes the corresponding warning action and sends the corresponding warning information to the handheld terminal of the relevant personnel through the information transmission module (10); Step 4: Simulation data acquisition; The controller (9) analyzes the spatiotemporal distribution of the multidimensional monitoring data based on the multidimensional monitoring data in the plurality of single-segment boxes (27), and obtains the diffusion path and concentration change trend of the leaked material based on the analysis results. At the same time, the diffusion path and concentration change trend of the leaked material are sent to the display (26) for real-time display.

8. The physical simulation method for monitoring powder gas leakage and diffusion according to claim 7, characterized in that: In step three, the smoke generator (12) is synchronously controlled to start working and generate smoke; the dust aerosol and smoke are synchronously drained from the head end to the tail end of the simulation box (2) by using the drainage negative pressure to simulate the working condition of powder-gas mixing leakage.

9. The physical simulation method for monitoring powder gas leakage and diffusion according to claim 8, characterized in that: In step three, the exhaust valve of the toxic gas standard gas cylinder (30) is synchronously controlled to open, so that the toxic gas standard gas cylinder (30) discharges toxic gas of a set concentration; and the dust aerosol, smoke and toxic gas are synchronously drained from the head end to the tail end of the simulation box (2) by using the drainage negative pressure to simulate the working condition of powder-gas mixing leakage.

10. The physical simulation method for monitoring powder gas leakage and diffusion according to claim 8, characterized in that: In step three, the energy of the airflow is adjusted by adjusting the openings of a plurality of airflow energy control doors (24) to simulate the diffusion paths under different leakage scenarios.

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