High-response detection early-warning pulse injection / vibration synergistic annular porous flow equalizing cavity anti-explosion dust removal system and test method thereof

Abstract

The invention discloses a high-response detection early-warning pulse injection / vibration synergistic annular porous flow-equalizing cavity anti-explosion dust removal system and a test method of the high-response detection early-warning pulse injection / vibration synergistic annular porous flow-equalizing cavity anti-explosion dust removal system. The high-response detection early-warning pulse injection / vibration synergistic annular porous flow equalizing cavity anti-explosion dust removal system comprises a dust remover, a detection early-warning prevention and control dust collection device, an annular flow equalizing air inlet and exhaust device, a radial porous injection / vibration synergistic ash removal device, a detection inerting device, a leakage / isolation / explosion suppression joint control device and a dual electrostatic elimination device. A safety monitoring and alarm device; and a program control and acquisition device. Compared with a traditional experimental device, the high-response detection early warning pulse injection / vibration synergistic annular porous flow equalizing cavity explosion-proof dust removal system has the characteristics of novelty in scheme and structural design, diversity in experimental content, multiple adjustable test parameters, high automation degree, intuitive display of data results, high intrinsic safety degree and the like; and theoretical guidance and technical support are provided for safety protection design of a high-activity metal dust removal system.

Description

Technical Field

[0001] This invention relates to an explosion-proof dust removal system, and more particularly to a high-response detection and early warning pulse jet / vibration coordinated circumferential multi-porous flow equalization cavity explosion-proof dust removal system and its testing method. Background Technology

[0002] With rapid economic development, highly reactive metals are increasingly widely used in non-ferrous metals, metallurgy, machining, and automobile manufacturing, with their production scale and usage continuously expanding. However, due to their high reactivity and low ignition energy, these highly reactive metal dusts are extremely flammable and explosive, posing a very high explosion risk and becoming a key focus of industrial production safety control. For example, the explosion in the dust removal workshop of a magnesium powder company in Tangshan in 2013, the explosion in the polishing workshop of Dongguan Huamao Electronics Group Co., Ltd. in 2023, and the dust explosion in a processing dust removal workshop in Shenzhen in 2016 all caused huge economic losses and casualties. Therefore, the design and application of explosion-proof dust removal systems for highly reactive metal dust, and the achievement of efficient dust removal risk control, are of great engineering significance.

[0003] Currently, conventional dust collection equipment in the industrial sector has significant technical shortcomings when handling highly reactive metal dust. For example, an unreasonable inlet structure design leads to uneven distribution of dust-laden airflow within the dust collector, and local eddies and velocity differences result in inconsistent dust deposition thickness on the filter bag surface. This not only reduces filtration efficiency but also easily damages the filter bags due to excessive local pressure, shortening the equipment's lifespan. Furthermore, single pulse-jet or mechanical vibration cleaning methods are insufficient to thoroughly remove sticky dust and deep-seated dust from the filter bag surface, easily causing filter bag blockage and affecting the continuous and stable operation of the system. Traditional dust collection equipment only employs single explosion venting or suppression methods and has not yet developed a complete, high-performance dust collection system integrating detection and early warning, inerting response, high-efficiency dust removal, and collaborative protection. This leads to significant hidden dangers and inherent safety issues in highly reactive metal dust collection systems.

[0004] To address the aforementioned safety hazards and improve dust removal efficiency, this patent innovatively designs a comprehensive high-response detection and early warning pulse jet / vibration coordinated circumferential multi-porous flow equalization cavity explosion-proof dust removal system. By combining pulse jet cleaning with high-frequency vibration in the design of a high-activity metal dust removal device, it achieves fully automated coordinated purification operation and improves dust removal and purification efficiency. It constructs a four-tiered safety device system encompassing explosion prevention, explosion suppression, explosion isolation, and explosion venting, covering all aspects of explosion prevention, process inhibition, propagation prevention, and energy release, forming a closed-loop protection system. This significantly improves dust removal efficiency, greatly enhances the inherent safety of the equipment, provides more comprehensive safety protection functions, and makes the equipment operation more stable. Summary of the Invention

[0005] Purpose of the invention: To provide a high-response detection and early warning pulse jet / vibration coordinated circumferential multi-porous flow equalization cavity explosion-proof dust removal system and its testing method, so as to solve the problems mentioned in the background art.

[0006] Technical Solution: The high-response detection and early warning pulse jet / vibration coordinated circumferential multi-hole flow equalization cavity explosion-proof dust removal system provided by this invention includes a dust collector, a detection, early warning, and control dust collection device, a circumferential flow equalization inlet and outlet device, a radial multi-hole pulse jet / vibration coordinated dust removal device, a detection inerting device, a leakage / isolation / explosion suppression joint control device, a dual electrostatic elimination device, a safety monitoring and alarm device, and a program control and acquisition device; the program control and acquisition device includes a synchronous controller and a program control and acquisition system; the dust collector is used to filter out highly reactive metal dust in the gas; the circumferential flow equalization inlet and outlet device is used to supply dust-laden gas to the dust collector and extract the gas after dust removal; the radial multi-hole pulse jet / vibration coordinated dust removal device is used to clean the dust inside the dust collector; the detection, early warning, and control dust collection device is connected to the bottom of the dust collector and is used to collect highly reactive... The dust collector is equipped with a detection and inerting device to introduce inert gas into the dust collector and the detection, early warning, and control dust collection device. A venting / isolation / explosion suppression control device works in conjunction with the detection and inerting device to vent, isolate, and suppress explosions. A dual electrostatic eliminator is used to eliminate static electricity on the inlet side of the circumferential flow equalization inlet and outlet device and on the dust-laden gas. A safety monitoring and alarm device monitors the concentration and flow rate of the dust-laden gas, the temperature of the detection, early warning, and control dust collection device, the pressure and differential pressure within the dust collector, and issues alarms. The program control and acquisition system controls the detection, early warning, and control dust collection device, the circumferential flow equalization inlet and outlet device, the radial multi-hole jet / vibration coordinated cleaning device, the detection and inerting device, the venting / isolation / explosion suppression control device, the dual electrostatic eliminator, and the safety monitoring and alarm device via a synchronous controller.

[0007] Furthermore, the dust collector includes a shell container and a dust-laden gas filtration device; the dust-laden gas filtration device includes an explosion-proof vibration baffle and multiple hydrophobic and antistatic PTFE membrane filter bags; the bottom of the shell container is connected to the detection, early warning, and dust collection device; the explosion-proof vibration baffle is horizontally installed on the upper side of the shell container; each hydrophobic and antistatic PTFE membrane filter bag is edge-sealed and installed through the explosion-proof vibration baffle; the circumferentially uniformly flowing inlet and outlet device supplies dust-laden gas to the suction shell container and extracts the gas after dust removal.

[0008] Furthermore, the detection, early warning, and dust control device includes a visual dust collection box, a star-shaped discharge valve, and a radio frequency admittance level switch; the top of the visual dust collection box is connected to the bottom of the shell container through the star-shaped discharge valve; the radio frequency admittance level switch is used to monitor the height of highly active metal dust inside the visual dust collection box, and is electrically connected to the program control and acquisition system through a synchronous controller; the program control and acquisition system controls the operation of the star-shaped discharge valve through the synchronous controller.

[0009] Furthermore, the circumferential flow equalization inlet and outlet device includes a porous circumferential flow equalization cavity, a dust-laden gas inlet duct, an explosion-proof exhaust duct, and an explosion-proof fan; the porous circumferential flow equalization cavity is fixedly mounted on the lower inner wall of the shell container; the ends of each hydrophobic antistatic PTFE membrane filter bag extend into the inner ring of the porous circumferential flow equalization cavity; several flow equalization ports are provided on the inner side wall of the porous circumferential flow equalization cavity; the dust-laden gas inlet duct is connected to the porous circumferential flow equalization cavity and extends out of the shell container in a sealed manner; the explosion-proof exhaust duct connects to the explosion-proof fan and the shell container on the upper side of the explosion-proof vibration partition; the program control and acquisition system controls the operation of the explosion-proof fan through a synchronous controller.

[0010] Furthermore, the explosion venting / isolation / suppression control device includes a two-way explosion-proof device, a high-speed response explosion suppression canister, and four hydrogen concentration detectors. The two-way explosion-proof device is connected in series on the dust-laden gas inlet duct. Flameless explosion venting devices are installed on both the shell container and the visible dust collection box. The high-speed response explosion suppression canister is installed on the shell container and is used to spray explosion suppressant into the shell container under the control of the synchronous controller. A first infrared flame detector is installed at the inlet end of the dust-laden gas inlet duct. A second infrared flame detector is installed on the shell container to detect the flame inside the porous circumferential flow equalization cavity. Two hydrogen concentration detectors are installed on the inner sidewall of the porous circumferential flow equalization cavity, and the other two hydrogen concentration detectors are installed on the visible dust collection box and the explosion-proof vibration baffle, respectively. The first infrared flame detector, the second infrared flame detector, and the four hydrogen concentration detectors are all electrically connected to the program control and acquisition system through the synchronous controller. The program control and acquisition system controls the two-way explosion-proof device through the synchronous controller.

[0011] Furthermore, the dual electrostatic eliminator includes an ion duct, a pipeline electrostatic eliminator, and a potential sensor; the ion duct is installed on the dust-laden gas inlet duct to remove the charge from the dust-laden gas; the pipeline electrostatic eliminator is connected in series on the dust-laden gas inlet duct to remove the charge on the pipeline; the potential sensor is installed on the housing container to detect the potential charge of the dust-laden gas inside the porous circumferential flow equalization cavity; the potential sensor is electrically connected to the program control and acquisition system through a synchronous controller.

[0012] Furthermore, the radial multi-hole jet / vibration coordinated dust removal device includes a suction-release regulating airbag, an airbag control valve, an inflation pump, a pulse jet pipe, and an explosion-proof vibration motor; the explosion-proof vibration motor is connected to the explosion-proof vibration baffle via a sealed rigid connecting rod penetrating the shell container; one end of the inflation pump and one end of the pulse jet pipe are connected to the suction-release regulating airbag via the airbag control valve, and the other side of the pulse jet pipe extends into and coils inside the shell container above the explosion-proof vibration baffle; a device for detecting the air outlet of the suction-release regulating airbag is installed on the suction-release regulating airbag. The system includes a high-precision air pressure sensor for the pulse jet pressure; a standard gas flow meter installed on the pulse jet pipeline to measure the amount of air released each time the suction-release control airbag is deflated; and multiple porous pulse jet nozzles, each with its end extending into the bottom of a hydrophobic, anti-static PTFE membrane filter bag, are connected in a continuous manner on the pulse jet pipeline. The program control and acquisition system controls the operation of the explosion-proof vibration motor, airbag control valve, and inflation pump through a synchronous controller. The high-precision air pressure sensor and the standard gas flow meter are both electrically connected to the program control and acquisition system through the synchronous controller.

[0013] Furthermore, the inerting detection device includes a nitrogen storage tank, an argon storage tank, a premixed tank, a first explosion-proof air compressor, a second explosion-proof air compressor, and two gas flow controllers; a pair of inerting gas nozzles and two pairs of inerting gas nozzles are respectively installed on the visible dust collection box and the inner sidewall of the porous circumferential flow equalization cavity; the outlet of the argon storage tank and the outlet of the nitrogen storage tank are respectively connected to the inlet of the premixed tank through the two gas flow controllers; the inlet of the second explosion-proof air compressor is connected to the outlet of the argon storage tank through the first explosion-proof solenoid valve; the outlet of the second explosion-proof air compressor... The inlet of the first explosion-proof air compressor is connected to a pair of inerting gas nozzles on the visible dust collection box; the outlet of the premix tank is connected to the air inlet of the first explosion-proof air compressor; the two pairs of inerting gas nozzles on the porous circumferential flow equalization chamber are connected to the outlet of the first explosion-proof air compressor through the second and third explosion-proof solenoid valves respectively; the first, second, and third explosion-proof solenoid valves are all electrically connected to the program control and acquisition system through a synchronous controller; the program control and acquisition system controls the operation of the first explosion-proof air compressor, the second explosion-proof air compressor, and the two gas flow controllers through the synchronous controller.

[0014] Furthermore, the safety monitoring and alarm devices include dust concentration monitoring mechanisms, temperature monitoring mechanisms, pressure detection mechanisms, dust-laden gas flow / velocity monitoring mechanisms, and alarm mechanisms;

[0015] The dust concentration monitoring mechanism is used to detect the dust concentration in the gas at both ends of the circumferential flow equalization inlet and outlet device; the dust-laden gas flow / velocity monitoring mechanism is used to detect the dust-laden gas flow velocity at the inlet end of the circumferential flow equalization inlet and outlet device; the temperature monitoring mechanism is used to detect the temperature inside the dust collection device for early warning and control, and to issue an alarm; the pressure detection mechanism is used to detect the explosion overpressure signal inside the shell container and the pressure difference between the upper and lower sides inside the shell container; the dust concentration monitoring mechanism, temperature monitoring mechanism, pressure detection mechanism, dust-laden gas flow / velocity monitoring mechanism, and alarm mechanism are all electrically connected to the program control and acquisition system through a synchronous controller; the alarm mechanism is used to issue a light alarm under the control of the program control and acquisition system and the synchronous controller.

[0016] Furthermore, the present invention also provides a test method for a high-response detection and early warning pulse jet / vibration coordinated circumferential porous flow equalization cavity explosion-proof dust removal system, comprising the following steps:

[0017] Step 1: Instrument Inspection: Check and confirm that the connections of each device are intact; check and confirm that the components in each device are working properly; check and ensure that the program control and data acquisition system can effectively and accurately control the program and acquire data.

[0018] Step 2: Adjust the status of each device: Adjust the status of the detection, early warning and control dust collection device, the circumferential flow equalization air intake and exhaust device, the radial multi-hole jet / vibration coordinated dust cleaning device, the detection inerting device and the dual electrostatic elimination device;

[0019] Step 3: Preset test parameters: Enter the control program required for the experiment into the program control and acquisition system according to the requirements, set different test parameters for each device and the data acquisition frequency of the safety monitoring and alarm device;

[0020] Step 4: Conduct testing: The program control and acquisition system coordinates the control of each device through the synchronous controller to ensure the operation of the explosion-proof dust removal system; the program control and acquisition system records the data collected by the safety monitoring and alarm devices;

[0021] Step 5: Equipment Cleaning: The radial multi-hole jet / vibration coordinated dust removal device cleans the dust collector of highly active metal dust. The detection, early warning and control dust collection device collects the highly active metal dust and then empties the detection, early warning and control dust collection device. The program control and acquisition system records the data collected by the safety monitoring and alarm device.

[0022] Step Six: Adjust Test Parameters: Repeat Steps Four and Five after changing a single test parameter until all tests are completed;

[0023] Step 7: Equipment Inspection and Maintenance: Check whether the components in each device are intact; shut down all devices and disconnect the power supply;

[0024] Step 8: Organize and archive the test data.

[0025] Compared with the prior art, the beneficial effects of this invention are:

[0026] I. This invention addresses the design flaws of highly reactive metal dust, which is prone to accumulation and explosion. It adopts an optimized technical solution that integrates uniform airflow, pulsed jet cleaning, oscillating dust removal, explosion prevention and suppression, detection and early warning, and inerting. Through the coordinated control of structural parameters and functional modules, the cavity structure is optimized and the dust removal efficiency and explosion safety are improved simultaneously.

[0027] Second, the present invention employs a dual electrostatic elimination device and a leakage / isolation / explosion suppression control device in conjunction with the detection of inert gas delivered by the inertization device to form a complete safety assurance system, which can effectively block the incubation and propagation of highly reactive metal dust explosions and ensure the safe operation of the device.

[0028] Third, the present invention uses a program control and data acquisition device to realize the automated management and control of the device operation, reduce human intervention, reduce safety risks caused by human error, and improve the stability and reliability of the explosion-proof dust removal system.

[0029] IV. The present invention has a reasonable overall structural design, stable operation performance, and strong ease of operation. It can efficiently carry out research on factors affecting dust removal efficiency and optimization of dust removal parameters, and has good engineering application value.

[0030] Compared with traditional experimental devices, this invention features novel scheme and structural design, diverse experimental content, a large number of adjustable test parameters, high degree of automation, intuitive data results, and high inherent safety, providing theoretical guidance and technical support for the safety protection design of high-activity metal dust removal systems. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the present invention;

[0032] Figure 2 This is a side cross-sectional view of the porous circumferential flow equalization cavity of the present invention;

[0033] Figure 3 This is a top cross-sectional view of the porous circumferential flow equalization cavity of the present invention;

[0034] Figure 4 This is a cross-sectional view of the pulse jet pipe of the present invention;

[0035] Figure 5 This is a schematic diagram of the pulse jet pipe of the present invention;

[0036] Figure 6 This is a schematic diagram of the airflow diffusion path of the present invention;

[0037] In the diagram: 1. Shell container; 2-1. First dust concentration detector; 2-2. Second dust concentration detector; 3. Hydrogen concentration detector; 4-1. First infrared flame detector; 4-2. Second infrared flame detector; 5. Differential pressure sensor; 6. Temperature detector; 7. Flameless explosion relief device; 8. Explosion-proof pressure detector; 9. Suction-release regulating airbag; 10. High-speed response explosion suppression tank; 11. Premixing tank; 12. Dust-laden gas inlet duct; 13. Bidirectional explosion-proof device; 14. Explosion-proof exhaust duct; 15. Star-shaped unloading valve; 16. Visual dust collection box; 17. Multi-hole pulse nozzle; 17-1. Fan-shaped duct; 18. Nitrogen storage tank; 19. Argon storage tank; 20. Hydrophobic antistatic PTFE membrane filter bag; 21. Explosion-proof vibration motor; 22. Airbag control valve; 23- 1. First explosion-proof air compressor; 23-2. Second explosion-proof air compressor; 24-1. First explosion-proof solenoid valve; 24-2. Second explosion-proof solenoid valve; 24-3. Third explosion-proof solenoid valve; 25. Inerting gas nozzle; 26. Pulse jet duct; 27. Safety alarm light; 28. Dust collection box warning light; 29. ​​Synchronous controller; 30. Program control and acquisition system; 31. Potential sensor; 32. Pipeline static eliminator; 33. Radio frequency admittance level switch; 34. Porous circumferential flow equalization cavity; 35. Visual observation window; 36. Explosion-proof vibration baffle; 37. Explosion-proof fan; 38. Rigid connecting rod; 39. Gas flow controller; 40. Gas velocity / flow detector; 41. Ionization duct; 42. High-precision air pressure sensor; 43. Standard gas flow meter; 44. Inflation pump. Detailed Implementation

[0038] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the embodiments described.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] In the description of this invention, it should be understood that the terms "left", "right", "front", "back", "up", "down", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Example 1:

[0042] like Figure 1-6 As shown, the high-response detection and early warning pulse jet / vibration coordinated circumferential multi-hole flow equalization cavity explosion-proof dust removal system provided by the present invention includes: a dust collector, a circumferential flow equalization inlet and outlet device, a detection, early warning, and control dust collection device, a radial multi-hole pulse jet / vibration coordinated dust removal device, a detection inerting device, a leakage / isolation / explosion suppression joint control device, a safety monitoring and alarm device, a dual electrostatic elimination device, and a program control and acquisition device; the program control and acquisition device includes a synchronous controller 29 and a program control and acquisition system 30; the dust collector is used to filter out highly active metal dust in the gas; the circumferential flow equalization inlet and outlet device is used to supply dust-laden gas to the dust collector and extract the gas after dust removal; the radial multi-hole pulse jet / vibration coordinated dust removal device is used to clean the dust inside the dust collector; the detection, early warning, and control dust collection device is connected to the bottom of the dust collector for collecting dust. The system includes a dust collector for collecting highly reactive metal dust; a detection and inerting device for introducing inert gas into the dust collector and the detection, early warning, and control dust collection device; a leakage / isolation / explosion suppression control device for explosion suppression in conjunction with the detection and inerting device; a dual electrostatic elimination device for electrostatic elimination of the inlet side of the circumferential flow equalization inlet and outlet device and the dust-laden gas; a safety monitoring and alarm device for monitoring the concentration and flow rate of the dust-laden gas, the temperature of the detection, early warning, and control dust collection device, the pressure and differential pressure inside the dust collector, and for issuing alarms; and a program control and acquisition system 30 for controlling the detection, early warning, and control dust collection device, the circumferential flow equalization inlet and outlet device, the radial multi-hole jet / vibration coordinated dust cleaning device, the detection and inerting device, the leakage / isolation / explosion suppression control device, the dual electrostatic elimination device, and the safety monitoring and alarm device via a synchronous controller 29.

[0043] The system utilizes a circumferential flow equalization inlet and outlet device to supply dust-laden gas to the dust collector, which filters out highly reactive metal dust. The circumferential flow equalization inlet and outlet device then extracts the gas after dust removal, thus completing the dust removal process. A radial multi-hole jet / vibration coordinated cleaning device cleans the interior of the dust collector of highly reactive metal dust. A detection, early warning, and dust collection device collects the filtered highly reactive metal dust. A dual electrostatic elimination device, a leakage / isolation / explosion suppression joint control device, and an inert gas detection and inerting device work together to form a complete safety assurance system, achieving explosion prevention, explosion leakage, explosion isolation, and explosion suppression. A safety monitoring and alarm device helps the program control and acquisition system and the synchronous controller 29 monitor the explosion-proof dust removal system, facilitating automated management and research.

[0044] I. This invention addresses the design flaws of highly reactive metal dust, which is prone to accumulation and explosion. It adopts an optimized technical solution that integrates uniform airflow, pulsed jet cleaning, oscillating dust removal, explosion prevention and suppression, detection and early warning, and inerting. Through the coordinated control of structural parameters and functional modules, the cavity structure is optimized and the dust removal efficiency and explosion safety are improved simultaneously.

[0045] Second, the present invention employs a dual electrostatic elimination device and a leakage / isolation / explosion suppression control device in conjunction with the detection of inert gas delivered by the inertization device to form a complete safety assurance system, which can effectively block the incubation and propagation of highly reactive metal dust explosions and ensure the safe operation of the device.

[0046] Third, the present invention uses a program control and data acquisition device to realize the automated management and control of the device operation, reduce human intervention, reduce safety risks caused by human error, and improve the stability and reliability of the explosion-proof dust removal system.

[0047] IV. The present invention has a reasonable overall structural design, stable operation performance, and strong ease of operation. It can efficiently carry out research on factors affecting dust removal efficiency and optimization of dust removal parameters, and has good engineering application value.

[0048] Compared with traditional experimental devices, this invention features novel scheme and structural design, diverse experimental content, a large number of adjustable test parameters, high degree of automation, intuitive data results, and high inherent safety, providing theoretical guidance and technical support for the safety protection design of high-activity metal dust removal systems.

[0049] Furthermore, the dust collector includes a housing 1 and a dust-laden gas filtration device; the dust-laden gas filtration device includes an explosion-proof vibration baffle 36 and multiple hydrophobic and antistatic PTFE membrane filter bags 20.

[0050] The shell container 1 is elliptical and cylindrical with a funnel-shaped bottom. Four metal supports are provided on the lower side of the shell container 1. The funnel-shaped bottom of the shell container 1 is connected to the detection, early warning, and dust collection device. A visual observation window 35 is provided on the lower right side of the vertical side wall of the shell container 1. An explosion-proof vibration baffle 36 is horizontally installed on the upper side of the shell container 1. The openings of each hydrophobic and antistatic PTFE membrane filter bag 20 are all installed through the explosion-proof vibration baffle 36 and sealed at the edges. A cage is installed to support each hydrophobic and antistatic PTFE membrane filter bag 20. A circumferentially uniformly flowing inlet and outlet device supplies dust-laden gas to the suction shell container 1 and extracts the gas after dust removal.

[0051] All bends inside the shell container 1 are designed with smooth transitions, and the inner wall of the shell container 1 is coated with anti-corrosion paint to prevent the accumulation of highly active metal dust and reduce the risk of explosion. The visualization observation window 35 facilitates the observation of the internal condition of the shell container 1. After the dust-laden gas enters the shell container 1, it must pass through the hydrophobic antistatic PTFE membrane filter bag. During this process, the highly active metal dust is filtered and left on the outer wall of the hydrophobic antistatic PTFE membrane filter bag 20. The purified gas reaches the upper side of the explosion-proof vibration baffle 36, thus realizing the dust removal and filtration of the dust-laden gas by the dust collector.

[0052] Furthermore, the detection, early warning, and dust control device includes a visual dust collection box 16, a star-shaped unloading valve 15, and a radio frequency admittance level switch 33;

[0053] The top of the visible dust collection box 16 is connected to the funnel-shaped bottom of the shell container 1 via a star-shaped discharge valve 15; the radio frequency admittance level switch 33 is installed on the visible dust collection box 16 to monitor the height of highly active metal dust inside the visible dust collection box 16, and is electrically connected to the program control and acquisition system 30 via a synchronous controller 29; the program control and acquisition system 30 controls the operation of the star-shaped discharge valve 15 via the synchronous controller 29.

[0054] The amount of highly reactive metal dust inside the visual dust collection box 16 is monitored in real time by the radio frequency admittance level switch 33, which facilitates the management and control of the detection, early warning and prevention dust collection device by the program control and acquisition system 30, and helps to clean the highly reactive metal dust inside the visual dust collection box 16 in a timely manner.

[0055] Furthermore, the circumferential flow equalization inlet and outlet device includes a porous circumferential flow equalization cavity 34, a dust-laden gas inlet duct 12, an explosion-proof exhaust duct 14, and an explosion-proof fan 37.

[0056] The porous circumferential flow equalization cavity 34 is annular and fixed to the lower inner wall of the shell container 1. The ends of each hydrophobic and antistatic PTFE membrane filter bag 20 extend into the inner ring of the porous circumferential flow equalization cavity 34. Several flow equalization ports 2-3 are provided on the inner ring side wall of the porous circumferential flow equalization cavity 34, and the flow equalization ports 2-3 are inclined downward at a certain angle. The dust-laden gas inlet duct 12 is connected to the porous circumferential flow equalization cavity 34 and extends out of the lower left side of the vertical side wall of the shell container 1 in a sealed manner. One end of the explosion-proof exhaust duct 14 is connected to the upper right side of the vertical side wall of the shell container 1 of the explosion-proof vibration baffle 36 and is located above the explosion-proof vibration baffle 36. The other end is connected to the explosion-proof fan 37. The program control and acquisition system 30 controls the operation of the explosion-proof fan 37 through the synchronous controller 29.

[0057] The dust-laden gas is evenly distributed by several flow equalization ports 2-3 on the inner side wall of the porous circumferential flow equalization cavity 34, so that the dust-laden gas can be evenly distributed to each hydrophobic antistatic PTFE membrane filter bag 20.

[0058] By changing the fan parameters such as the air volume of the explosion-proof fan 37, the correlation between fan parameters and dust removal efficiency can be obtained, and a correlation between fan parameters and dust removal efficiency is proposed. Correspondence with fan parameters:

[0059]

[0060] In the formula: This represents the total filtration area of ​​the filter bag; Dust propulsion speed; This refers to the fan's air volume.

[0061] By changing the parameters of the hydrophobic antistatic PTFE membrane filter bag 20, such as its length, material, pore size, and cross-sectional diameter, the influence of filter bag parameters on dust removal efficiency can be studied. This allows for the determination of the correlation between filter bag parameters and dust removal efficiency, and the development of a correlation between filter bag parameters and dust removal efficiency. Correspondence with filter bag parameters:

[0062]

[0063] In the formula: This is a correction factor for explosion-proof safety. This is the filter bag interception coefficient (related to the filter bag pore size). This is the adsorption coefficient (related to the filter bag material). The specific resistance of the dust layer on the filter bag surface; The effective filtration area of ​​the filter bag (related to the length and diameter of the filter bag); Dust residence time on the filter bag surface (related to cleaning frequency); This refers to the fan's air volume.

[0064] Furthermore, the explosion-proof / isolation / suppression control device includes a two-way explosion-proof device 13, a high-speed response explosion suppression tank 10, and four hydrogen concentration detectors 3;

[0065] A bidirectional explosion-proof device 13 is connected in series to the dust-laden gas inlet duct 12; flameless explosion relief devices 7 are installed on the vertical side wall of the shell container 1 between the explosion-proof vibration baffle 36 and the upper edge of the porous circumferential flow equalization cavity 34, and on one side of the vertical side wall of the visible dust collection box 16; a high-speed response explosion suppression tank 10 is installed on the vertical side wall of the shell container 1 between the explosion-proof vibration baffle 36 and the upper edge of the porous circumferential flow equalization cavity 34, and is used to spray explosion suppressant into the shell container 1 under the control of the synchronous controller 29; a first infrared flame detector 4-1 with its detection end extending into the dust-laden gas inlet duct 12 is installed at the air inlet end of the dust-laden gas inlet duct 12; a second infrared flame detector 4-2 with its detection end extending into the porous circumferential flow equalization cavity 34 is installed on the lower side of the vertical side wall of the shell container 1;

[0066] Two hydrogen concentration detectors 3 are installed on the inner sidewall of the porous circumferential flow equalization cavity 34, and the other two hydrogen concentration detectors 3 are installed on the visible dust collection box 16 and the explosion-proof vibration baffle 36, respectively. The hydrogen concentration detectors 3 on the explosion-proof vibration baffle 36 are used to detect the hydrogen concentration on the lower side of the explosion-proof vibration baffle 36. The first infrared flame detector 4-1, the second infrared flame detector 4-2 and the four hydrogen concentration detectors 3 are all electrically connected to the program control and acquisition system 30 through the synchronization controller 29. The program control and acquisition system 30 controls the bidirectional explosion-proof device 13 through the synchronization controller 29.

[0067] After detecting a flame signal using the first infrared flame detector 4-1 and the second infrared flame detector 4-2, the flame signal is transmitted to the control program and acquisition system 30. The synchronous controller 29 controls the closure of the bidirectional explosion-proof device 13's bidirectional gate, sealing the dust collector cavity and preventing the flame from spreading along the dust-laden gas inlet duct 12. The three hydrogen concentration detectors 3 inside the shell container 1 help the control program and acquisition system 30 monitor the hydrogen concentration inside and at the top of the explosion-proof dust collector cavity. When the hydrogen concentration data is abnormal, the bidirectional explosion-proof device 13 closes, sealing the dust collector cavity. After the bidirectional explosion-proof device 13 closes, the high-speed response explosion suppression tank 10 opens and sprays explosion suppressant into the dust collector for effective suppression. When the pressure inside the shell container 1 and the visible dust collection box 16 exceeds the release pressure of the corresponding flameless explosion relief device 7, the corresponding flameless explosion relief device 7 opens and effectively releases the explosion, preventing the shell container 1 and the visible dust collection box 16 from rupturing. At the same time, it effectively releases overpressure and flame, preventing the flame from spreading to the outside.

[0068] Furthermore, the dual static eliminator includes an ion duct 41, a pipe static eliminator 32, and a potential sensor 31.

[0069] An ionization duct 41 is installed on the inlet side of the dust-laden gas inlet duct 12 to remove the charge in the dust-laden gas; a pipe electrostatic eliminator 32 is connected in series on the dust-laden gas inlet duct 12 between the bidirectional explosion-proof device 13 and the porous circumferential flow equalization cavity 34 to remove the charge on the dust-laden gas inlet duct 12; a potential sensor 31 is installed on the housing container 1, and the detection end extends into the porous circumferential flow equalization cavity 34; the potential sensor 31 is electrically connected to the program control and acquisition system 30 through the synchronous controller 29.

[0070] The ion air duct 41 removes the charge in the dust-laden gas, and the pipeline static eliminator 32 removes the charge on the dust-laden gas inlet duct 12, thus achieving a dual static elimination function and ensuring the safe operation of the explosion-proof dust removal system. The potential sensor 31 helps the program control and acquisition system 30 detect the potential in the dust-laden gas to achieve data acquisition. When the potential is abnormal or exceeds the safety threshold, the synchronous controller 29 urgently stops the explosion-proof fan 37 from operating.

[0071] Furthermore, the radial multi-hole jet / vibration coordinated dust removal device includes a suction and release regulating airbag 9, an airbag control valve 22, an inflation pump 44, a pulse jet pipe 26, an explosion-proof vibration motor 21, and a rigid connecting rod 38.

[0072] The explosion-proof vibration motor 21 is connected to the explosion-proof vibration partition 36 through a rigid connecting rod 38 that penetrates the sealed shell container 1; a high-precision air pressure sensor 42 for detecting the blowing pressure of the gas at the outlet of the suction-release regulating airbag 9 is installed on the suction-release regulating airbag 9.

[0073] One end of the pulse jet pipe 26 and the inflation pump 44 are connected to the suction-release regulating airbag 9 via the airbag control valve 22. The other side of the pulse jet pipe 26 extends into the housing container 1 and is coiled around the upper side of the explosion-proof vibration partition 36. A standard gas flow meter 43 is installed on the pulse jet pipe 26 to measure the amount of gas injected each time the suction-release regulating airbag 9 is released. Multiple porous pulse jet pipes 17 are connected in a continuous manner on the pulse jet pipe 26. The lower end of each porous pulse jet pipe 17 extends coaxially into the bottom of each hydrophobic antistatic PTFE membrane filter bag 20. The porous pulse jet pipe 17 is composed of multiple fan-shaped pipes 17-1 with a fan-shaped cross-section spliced ​​together. Multiple jet holes 17-2 are arranged in an array on the arc-shaped side of each pipe. The program control and acquisition system 30 controls the operation of the explosion-proof vibration motor 21, the airbag control valve 22 and the inflation pump 44 through the synchronous controller 29.

[0074] The high-precision pressure sensor 42 and the standard gas flow meter 43 are both electrically connected to the program control and acquisition system 30 through the synchronous controller 29.

[0075] During the dust removal operation, the synchronous controller 29 controls the airbag control valve 22, so that the external fan and the pulse jet pipe 26 alternately connect with the suction and release regulating airbag 9 to form a pulse-type inflation and deflation of the suction and release regulating airbag 9. At the same time, the program control and acquisition system 30 monitors the jet pressure at the outlet of the suction and release regulating airbag 9 in real time through the high-precision air pressure sensor 42, and monitors the jet volume of the suction and release regulating airbag 9 each time it is released through the standard gas flow meter 43. By adjusting the duration of the pulse jet pipe 26 and the suction and release regulating airbag 9 connected by the airbag control valve 22, the alternating action frequency of the airbag control valve 22, and the air volume of the external fan, the pulse time, the jet frequency of the suction and release regulating airbag 9, the jet volume and the jet pressure and other jetting conditions parameters can be adjusted.

[0076] The explosion-proof vibration motor 21 transmits the vibration to the explosion-proof vibration partition 36 through the rigid connecting rod 38, so that each hydrophobic antistatic PTFE membrane filter bag 20 is further affected by vibration, thereby improving the dust removal efficiency.

[0077] The multi-hole pulse nozzle 17 is made up of multiple fan-shaped pipes 17-1 with nozzles 17-2 in different directions, and extends deep into the bottom of the filter bag, so that the air jet is evenly distributed along the axial and circumferential directions. Compared with the traditional single nozzle, the multi-hole pulse nozzle 17 can clean dust more efficiently and improve the blowing area and efficiency.

[0078] By changing the jetting parameters of the suction-release regulating airbag 9, the correlation between the jetting parameters and dust removal efficiency can be obtained, and a method for linking jetting parameters with dust removal efficiency can be proposed. Correspondence between injection operation parameters:

[0079]

[0080] In the formula: P is the comprehensive correction factor; j The pressure at the outlet of the suction and release type airbag 9 is the blowing pressure. The single-shot air volume of the suction and release type airbag 9 is the air volume of the airbag. The pulse duration is represented by m, n, and p, which are all influence indices.

[0081] By changing the mechanical vibration parameters of the explosion-proof vibratory motor 21, such as the mechanical vibration amplitude, mechanical vibration frequency, and mechanical vibration duration, a correlation between the mechanical vibration parameters and dust removal efficiency is established, and a method for correlating mechanical vibration with dust removal efficiency is proposed. Correspondence with mechanical vibration parameters:

[0082]

[0083] In the formula: It is the mechanical vibration frequency; This refers to the amplitude of mechanical vibration. denoted as the duration of mechanical vibration; a, b, c, and d are fitting coefficients determined by the mechanical vibration conditions.

[0084] Based on the above relationships, the overall dust removal efficiency can be obtained. Dust removal efficiency related to fan parameters Filter bag parameters are related to dust removal efficiency Dust removal efficiency related to pulse-jet cleaning operation And the dust removal efficiency related to mechanical vibration The correspondence between them:

[0085]

[0086] In the formula: Correlate fan parameters with dust removal efficiency; Correlate filter bag parameters to dust removal efficiency; The dust removal efficiency is associated with the pulse-jet cleaning operation. The dust removal efficiency is related to mechanical vibration.

[0087] Furthermore, the detection inerting device includes a nitrogen storage tank 18, an argon storage tank 19, a premixed tank 11, a first explosion-proof air compressor 23-1, a second explosion-proof air compressor 23-2, two gas flow controllers 39, and six inerting gas nozzles 25.

[0088] Four inert gas nozzles 25 are installed on the inner side wall of the porous circumferential flow equalization cavity 34, and the other two inert gas nozzles 25 are respectively installed on the upper side of the two opposite vertical sides of the visible dust collection box 16; a guide plate is installed on the vertical inner wall of the visible dust collection box 16 where the two inert gas nozzles 25 are located, which is used to guide the airflow ejected from the inert gas nozzles 25 upward to prevent dust from being stirred up.

[0089] The outlet of the argon storage tank 19 and the outlet of the nitrogen storage tank 18 are respectively connected to the inlet of the premix tank 11 through two gas tank connecting pipes; two gas flow controllers 39 are connected in series on each of the two gas tank connecting pipes.

[0090] The air inlet of the second explosion-proof air compressor 23-2 is connected to the gas tank connection pipe between the argon storage tank 19 and the corresponding gas flow controller 39 through a branch pipe. The first explosion-proof solenoid valve 24-1 is connected in series on the branch pipe. The air outlet of the second explosion-proof air compressor 23-2 is connected to the two inert gas nozzles 25 on the visible dust collection box 16 through two dust collection branch pipes.

[0091] The air inlet of the first explosion-proof air compressor 23-1 is connected to the air outlet of the premix tank 11; the four inert gas nozzles 25 on the porous circumferential flow equalization cavity 34 are paired up, and the two inert gas nozzles 25 in the same group are connected by a sealed through-shell container 1 and a U-shaped air supply pipe of the porous circumferential flow equalization cavity 34; the two U-shaped air supply pipes are connected to the air outlet of the first explosion-proof air compressor 23-1 through two dust collector air supply pipes; a second explosion-proof solenoid valve 24-2 and a third explosion-proof solenoid valve 24-3 are respectively connected in series on the two dust collector air supply pipes;

[0092] The first explosion-proof solenoid valve 24-1, the second explosion-proof solenoid valve 24-2 and the third explosion-proof solenoid valve 24-3 are all electrically connected to the program control and acquisition system 30 through the synchronous controller 29.

[0093] The program control and acquisition system 30 controls the operation of an explosion-proof air compressor 23-1, a second explosion-proof air compressor 23-2, and two gas flow controllers 39 through a synchronous controller 29.

[0094] Two gas flow controllers 39 are used to regulate the amount of gas input into the premixing tank 11, thereby controlling the mixing ratio so that argon and nitrogen are mixed in a 7:3 ratio. When the hydrogen concentration data detected by the hydrogen concentration detector 3 on the shell container 1 or the visible dust collection box 16 reaches the set threshold, the synchronous controller 29 controls the third explosion-proof solenoid valve 24-3 and the fourth explosion-proof solenoid valve 24-4 to open, allowing the mixed inert gas to enter the shell container 1, or controls the first explosion-proof solenoid valve 24-1 to open, allowing argon to enter the visible dust collection box 16, thereby controlling the internal hydrogen concentration below the threshold and achieving the purpose of explosion prevention and suppression.

[0095] Furthermore, the safety monitoring and alarm devices include dust concentration monitoring mechanisms, temperature monitoring mechanisms, pressure detection mechanisms, dust-laden gas flow / velocity monitoring mechanisms, and alarm mechanisms;

[0096] The dust concentration monitoring mechanism includes a first dust concentration detector 2-1 and a second dust concentration detector 2-2; the first dust concentration detector 2-1 is installed on the inlet end of the dust-laden gas inlet duct 12, and its detection end extends into the dust-laden gas inlet duct 12; the second dust concentration detector 2-2 is installed on the explosion-proof exhaust duct 14, and its detection end extends into the explosion-proof exhaust duct 14; both the first dust concentration detector 2-1 and the second dust concentration detector 2-2 are electrically connected to the program control and acquisition system 30 through a synchronous controller 29;

[0097] The temperature monitoring mechanism includes a temperature detector 6; the temperature detector 6 is installed on the visible dust collection box 16 and its end extends into the visible dust collection box 16; the temperature detector 6 is electrically connected to the program control and acquisition system 30 through the synchronization controller 29.

[0098] The pressure detection mechanism includes a differential pressure sensor 5 and an explosion-proof pressure detector 8. The differential pressure sensor 5 is installed on the explosion-proof vibration baffle 36 and is used to detect the pressure difference between the upper and lower sides of the explosion-proof vibration baffle 36. The explosion-proof pressure detector 8 is installed on the vertical side wall of the shell container 1 between the explosion-proof vibration baffle 36 and the upper edge of the porous circumferential flow equalization cavity 34.

[0099] Both the differential pressure sensor 5 and the explosion-proof pressure detector 8 are electrically connected to the program control and acquisition system 30 through the synchronous controller 29;

[0100] The dust-laden gas flow / velocity monitoring mechanism includes a gas flow / velocity detector 40; the gas flow / velocity detector 40 is connected in series on the dust-laden gas inlet duct 12, located between the ion air duct 41 and the bidirectional explosion-proof device 13, and is electrically connected to the program control and acquisition system 30 through the synchronous controller 29.

[0101] The alarm mechanism includes a dust collection box warning light 28 and a safety alarm light 27; the program control and data acquisition system 30 controls the dust collection box warning light 28 and the safety alarm light 27 through a synchronization controller 29.

[0102] When either the first infrared flame detector 4-1 or the second infrared flame detector 4-2 detects a flame, or when the hydrogen concentration data detected by either hydrogen concentration detector 3 exceeds the threshold, or when the temperature data detected by temperature detector 6 exceeds the threshold, the synchronous controller 29 controls the safety alarm light 27 to light up to issue an alarm; when the radio frequency admittance level switch 33 detects that the height of highly active metal dust has reached the threshold, the synchronous controller 29 controls the dust collection box warning light 28 to light up to issue a warning.

[0103] The dust concentration at the inlet and outlet of the circumferential flow equalization inlet and outlet device is detected by dust concentration detector 2-1 and second dust concentration detector 2-2 respectively, which helps to calculate the dust removal efficiency of the dust collector.

[0104] The explosion-proof pressure detector 8 is used to help the program control and acquisition system 30 detect the explosion overpressure signal inside the dust collector. When the explosion-proof pressure detector 8 detects the explosion overpressure signal, the synchronous controller 29 closes the bidirectional explosion-proof device 13 and seals the dust collector cavity.

[0105] The gas velocity / flow rate detector 40 assists the program control and acquisition system 30 in detecting the velocity and flow rate of the dust-laden gas in the dust-laden gas inlet pipe 12. When the velocity and flow rate are outside the preset range, the synchronous controller 29 regulates the explosion-proof fan 37 to bring the velocity and flow rate of the dust-laden gas in the gas inlet pipe 12 within the preset range, thereby ensuring the stability of the velocity and flow rate inside the dust-laden gas inlet pipe 12.

[0106] Furthermore, the present invention also provides a test method for a high-response detection and early warning pulse jet / vibration coordinated circumferential porous flow equalization cavity explosion-proof dust removal system, comprising the following steps:

[0107] Step 1: Instrument Inspection: Check and confirm that the connections of each device are intact; check and confirm that the components in each device are working properly; check and ensure that the program control and data acquisition system 30 can effectively and accurately control the program and acquire data.

[0108] Step 2: Adjust the status of each device: Adjust the status of the detection, early warning and control dust collection device, the circumferential flow equalization air intake and exhaust device, the radial multi-hole jet / vibration coordinated dust cleaning device, the detection inerting device and the dual electrostatic elimination device;

[0109] Adjust the detection, early warning, and dust control device: calibrate the detection accuracy of the RF admittance level switch 33 to ensure that it can accurately feed back the signal of the amount of highly active metal dust in the visible dust collection box 16; verify the flow guiding effect of the guide plate in the visible dust collection box 16 to prevent dust from being stirred up again.

[0110] Adjust the radial multi-hole jet / vibration coordinated dust removal device: adjust the jet pressure, frequency, duration, jet air volume, etc.

[0111] Adjusting the inerting device: The gas flow rates from the argon storage tank 19 and the nitrogen storage tank 18 to the premixing tank 11 are precisely controlled by two gas flow controllers 39 to ensure an argon to nitrogen mixing ratio of 7:3; the output pressures of the first explosion-proof air compressor 23-1 and the second explosion-proof air compressor 23-2 are adjusted to ensure that the inerting gas nozzle 25 can spray a stable and continuous gas flow.

[0112] Adjust the dual electrostatic elimination device: Check the operating status of the pipeline electrostatic eliminator 32 and ion air duct 41, verify the electrostatic elimination effect through the potential sensor 31, and ensure that the removal of charge from dust-laden gas meets the standards.

[0113] Step 3: Preset test parameters: Enter the control program required for the experiment into the program control and acquisition system 30 according to the requirements, and set different test parameters for each device and the data acquisition frequency of the safety monitoring and alarm device;

[0114] Adjustable fan parameters such as the air volume of the explosion-proof fan 37 can be set; adjustable filter bag parameters such as the length, material, pore size, and cross-sectional diameter of the hydrophobic antistatic PTFE membrane filter bag 20 can be set; adjustable blowing condition parameters such as the pulse time, blowing frequency, blowing air volume, and blowing pressure of the suction-release regulating airbag 9 can be set; adjustable mechanical vibration parameters such as the mechanical vibration amplitude, mechanical vibration frequency, and mechanical vibration duration of the explosion-proof vibration motor 21 can be set.

[0115] Step 4: Conduct testing: The program control and acquisition system 30 coordinates the control of each device through the synchronization controller 29 to enable the explosion-proof dust removal system to operate; the program control and acquisition system 30 records the data collected by the safety monitoring and alarm devices;

[0116] The program control and acquisition system 30 controls the operation of the explosion-proof fan 37 through the synchronous controller 29, so that the dust-laden gas enters the annular flow equalization cavity 34 through the dust-laden gas inlet duct 12, and then is evenly distributed to each hydrophobic antistatic PTFE membrane filter bag 20 through each flow equalization port 2-3. The dust-laden gas is filtered through the hydrophobic antistatic PTFE membrane filter bag, and the purified gas reaches the upper side of the explosion-proof vibration baffle 36 and is output by the explosion-proof fan 37 through the explosion-proof exhaust duct 14. During this process, each program control and acquisition system 30 records the data collected by the safety monitoring and alarm devices.

[0117] Step 5: Equipment cleaning: The radial multi-hole jet / vibration coordinated dust removal device cleans the dust collector of highly active metal dust. The detection, early warning and control dust collection device collects the highly active metal dust and empties the visible dust collection box 16. During this process, the various program control and acquisition systems 30 record the data collected by the high-precision air pressure sensor 42, the quasi-gas flow meter 43 and the safety monitoring and alarm device.

[0118] During steps four and five, if the control program and acquisition system 30 detect a flame signal through the first infrared flame detector 4-1 or the second infrared flame detector 4-2, or detect an explosion overpressure signal through the explosion-proof pressure detector 8, then the synchronous controller 29 controls the closing of the bidirectional gate of the bidirectional explosion-proof device 13, and controls the high-speed response explosion suppression tank 10 to open and spray explosion suppressant into the dust collector.

[0119] If the hydrogen concentration data detected by the hydrogen concentration detector 3 on the visible dust collection box 16 by the control program and the acquisition system 30 exceeds the threshold or the temperature data detected by the temperature detector 6 exceeds the threshold, the first explosion-proof solenoid valve 24-1 is opened by the synchronous controller 29 to allow argon gas to enter the visible dust collection box 16.

[0120] If the hydrogen concentration data detected by the hydrogen concentration detector 3 on the dust collector by the control program and the acquisition system 30 exceeds the threshold, the third explosion-proof solenoid valve 24-3 and the fourth explosion-proof solenoid valve 24-4 are opened by the synchronous controller 29, so that the mixed inert gas enters the shell container 1.

[0121] When the control program and acquisition system 30 detect a flame through either the first infrared flame detector 4-1 or the second infrared flame detector 4-2, or when the hydrogen concentration data detected by either the hydrogen concentration detector 3 exceeds the threshold, or when the temperature data detected by the temperature detector 6 exceeds the threshold, the synchronization controller 29 controls the safety alarm light 27 to light up to issue an alarm. When the control program and acquisition system 30 detect that the height of highly active metal dust in the visible dust collection box 16 reaches the threshold through the radio frequency admittance level switch 33, the synchronization controller 29 controls the dust collection box warning light 28 to light up to issue a warning.

[0122] Step Six: Adjust Test Parameters: Repeat Steps Four and Five after changing a single test parameter until all tests are completed;

[0123] Step 7: Equipment Inspection and Maintenance: Check whether the components in each device are intact; shut down all devices and disconnect the power supply; close all valves and components;

[0124] Step 8: Organize and archive the test data.

[0125] Compared with the prior art, the beneficial effects of this invention are:

[0126] I. This invention addresses the design flaws of highly reactive metal dust, which is prone to accumulation and explosion. It adopts an optimized technical solution that integrates uniform airflow, pulsed jet cleaning, oscillating dust removal, explosion prevention and suppression, detection and early warning, and inerting. Through the coordinated control of structural parameters and functional modules, the cavity structure is optimized and the dust removal efficiency and explosion safety are improved simultaneously.

[0127] Second, the present invention can achieve uniform gas distribution of dust-laden gas through a porous circumferential flow equalization cavity structure, avoid uneven local high-activity metal dust load of hydrophobic antistatic PTFE membrane filter bag 20, significantly improve the overall dust removal load balance of hydrophobic antistatic PTFE membrane filter bag 20, and ensure stable improvement of dust removal efficiency and safe operation.

[0128] Third, the radial multi-hole jet / vibration coordinated dust removal device of the present invention adopts the design of multi-hole pulse jet pipe 17 reaching the bottom of the inner end of the hydrophobic antistatic PTFE membrane filter bag 20, and is combined with the design of multiple multi-hole pulse jet pipes 17 for joint synchronous jetting. Through the multi-directional jet holes 17-2, the high-pressure pulse airflow is accurately injected, which enhances the removal effect of highly active metal dust on the surface of the hydrophobic antistatic PTFE membrane filter bag 20, improves the dust removal efficiency and dust removal efficiency, and extends the service life of the hydrophobic antistatic PTFE membrane filter bag 20.

[0129] IV. The present invention adopts a pulse jet cleaning and mechanical vibration coordinated dust removal system. By adjusting key parameters such as pulse pressure, jet frequency, vibration amplitude and vibration frequency, a quantitative correspondence between multiple parameters and dust removal efficiency can be established, so as to achieve precise control of the dust removal process and ensure efficient dust removal of highly active dust in a wide range of working conditions.

[0130] V. This invention employs a dual electrostatic elimination device and a combined release / isolation / explosion suppression control device to work together with the inert gas delivered by the inertization device to form a complete safety assurance system, which can effectively block the incubation and propagation of highly reactive metal dust explosions and ensure the safe operation of the device.

[0131] VI. This invention uses a program control and data acquisition device to achieve automated management and control of the device operation, reduce human intervention, lower the safety risks caused by human error, and improve the stability and reliability of the explosion-proof dust removal system.

[0132] VII. The safety monitoring and alarm system of the present invention is equipped with a safety alarm light 27 and a dust collection box warning light 28. By monitoring and triggering alarms on abnormal data during the operation of the explosion-proof dust removal system in real time, the safety response time is shortened and the safety level is improved.

[0133] 8. The present invention has a reasonable overall structural design, stable operation performance, and strong ease of operation. It can efficiently carry out research on factors affecting dust removal efficiency and optimization of dust removal parameters, and has good engineering application value.

[0134] 9. Compared with traditional experimental devices, this invention has the characteristics of novel scheme and structural design, diverse experimental content, multiple variable parameters, high degree of automation, intuitive display of data results and high degree of inherent safety, providing theoretical guidance and technical support for the safety protection design of high-activity metal dust removal systems.

[0135] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A high-response detection and early warning pulse jet / vibration coordinated circumferential porous flow equalization cavity explosion-proof dust removal system, characterized in that: It includes a dust collector, a detection, early warning and control dust collection device, a circumferential flow equalization air intake and exhaust device, a radial multi-hole jet / vibration coordinated dust removal device, a detection inerting device, a leakage / isolation / explosion suppression joint control device, a dual static electricity elimination device, a safety monitoring and alarm device, and a program control and acquisition device; the program control and acquisition device includes a synchronous controller (29) and a program control and acquisition system (30). The dust collector is used to filter out highly reactive metal dust from the gas; the circumferential flow equalization inlet and outlet device is used to supply dust-laden gas to the dust collector and extract the gas after dust removal; the radial multi-hole jet / vibration coordinated cleaning device is used to clean the dust inside the dust collector; the detection, early warning and control dust collection device is connected to the bottom of the dust collector to collect highly reactive metal dust; the detection inerting device is used to introduce inert gas into the dust collector and the detection, early warning and control dust collection device; the venting / isolation / explosion suppression linkage device is used to link with the detection inerting device to perform explosion venting, explosion isolation and explosion suppression; the dual electrostatic elimination device is used to control the circumferential flow equalization inlet and outlet. The intake side of the uniform flow intake and exhaust device and the dust-laden gas are electrostatically eliminated; the safety monitoring and alarm device is used to monitor the concentration and flow rate of the dust-laden gas, monitor the temperature of the detection, early warning and control dust collection device, the pressure and differential pressure inside the dust collector and other data, and to issue alarms; the program control and acquisition system (30) controls the detection, early warning and control dust collection device, the circumferential uniform flow intake and exhaust device, the radial multi-hole jet / vibration coordinated dust cleaning device, the detection inerting device, the leakage / isolation / explosion suppression joint control device, the dual electrostatic elimination device and the safety monitoring and alarm device through the synchronous controller (29).

2. The high-response detection and early warning pulse jet / vibration coordinated circumferential porous flow equalization cavity explosion-proof dust removal system according to claim 1, characterized in that: The dust collector includes a shell container (1) and a dust-laden gas filtration device; the dust-laden gas filtration device includes an explosion-proof vibration baffle (36) and multiple hydrophobic antistatic PTFE membrane filter bags (20); the bottom of the shell container (1) is connected to the detection, early warning and dust collection device; the explosion-proof vibration baffle (36) is horizontally installed on the upper side inside the shell container (1); each hydrophobic antistatic PTFE membrane filter bag (20) is installed through the explosion-proof vibration baffle (36) with an edge-sealed design; the circumferential flow inlet and outlet device supplies dust-laden gas to the suction shell container (1) and extracts the gas after dust removal.

3. The high-response detection and early warning pulse jet / vibration coordinated circumferential porous flow equalization cavity explosion-proof dust removal system according to claim 2, characterized in that: The detection, early warning and control dust collection device includes a visual dust collection box (16), a star-shaped discharge valve (15) and a radio frequency admittance level switch (33); the top of the visual dust collection box (16) is connected to the bottom of the shell container (1) through the star-shaped discharge valve (15); the radio frequency admittance level switch (33) is used to monitor the height of highly active metal dust inside the visual dust collection box (16) and is electrically connected to the program control and acquisition system (30) through the synchronous controller (29); the program control and acquisition system (30) controls the operation of the star-shaped discharge valve (15) through the synchronous controller (29).

4. The high-response detection and early warning pulse jet / vibration coordinated circumferential porous flow equalization cavity explosion-proof dust removal system according to claim 2, characterized in that: The circumferential flow equalization inlet and outlet device includes a porous circumferential flow equalization cavity (34), a dust-laden gas inlet duct (12), an explosion-proof exhaust duct (14), and an explosion-proof fan (37); the porous circumferential flow equalization cavity (34) is fixed around the lower inner wall of the shell container (1); the ends of each hydrophobic antistatic PTFE membrane filter bag (20) extend into the inner ring of the porous circumferential flow equalization cavity (34); several flow equalization ports (2-3) are provided on the inner ring side wall of the porous circumferential flow equalization cavity (34); the dust-laden gas inlet duct (12) is connected to the porous circumferential flow equalization cavity (34) and extends out of the shell container (1) in a sealed manner; the explosion-proof exhaust duct (14) connects to the explosion-proof fan (37) and the shell container (1) on the upper side of the explosion-proof vibration baffle (36); the program control and acquisition system (30) controls the operation of the explosion-proof fan (37) through the synchronous controller (29).

5. The high-response detection and early warning pulse jet / vibration coordinated circumferential porous flow equalization cavity explosion-proof dust removal system according to claim 4, characterized in that: The explosion venting / isolation / suppression control system includes a two-way explosion-proof device (13), a high-speed response explosion suppression tank (10), and four hydrogen concentration detectors (3); the two-way explosion-proof device (13) is connected in series on the dust-laden gas inlet duct (12); flameless explosion venting devices (7) are installed on both the shell container (1) and the visible dust collection box (16); the high-speed response explosion suppression tank (10) is installed on the shell container (1) and is used to spray explosion suppressant into the shell container (1) under the control of the synchronous controller (29); a first infrared flame detector (4-1) is installed on the air inlet end of the dust-laden gas inlet duct (12); and multiple detection devices are installed on the shell container (1). The second infrared flame detector (4-2) inside the porous circumferential flow equalization cavity (34) is installed on the inner ring side wall of the porous circumferential flow equalization cavity (34), and the other two hydrogen concentration detectors (3) are installed on the visible dust collection box (16) and the explosion-proof vibration baffle (36), respectively. The first infrared flame detector (4-1), the second infrared flame detector (4-2) and the four hydrogen concentration detectors (3) are all electrically connected to the program control and acquisition system (30) through the synchronous controller (29). The program control and acquisition system (30) controls the bidirectional explosion-proof device (13) through the synchronous controller (29).

6. The high-response detection and early warning pulse jet / vibration coordinated circumferential porous flow equalization cavity explosion-proof dust removal system according to claim 4, characterized in that: The dual electrostatic elimination device includes an ion air duct (41), a pipeline electrostatic eliminator (32), and a potential sensor (31). The ion air duct (41) is installed on the dust-laden gas inlet duct (12) to remove the charge of the dust-laden gas. The pipeline electrostatic eliminator (32) is connected in series on the dust-laden gas inlet duct (12) to remove the charge on the duct. The potential sensor (31) is installed on the shell container (1) to detect the potential charge of the dust-laden gas inside the porous circumferential flow equalization cavity (34). The potential sensor (31) is electrically connected to the program control and acquisition system (30) through a synchronous controller (29).

7. The high-response detection and early warning pulse jet / vibration coordinated circumferential porous flow equalization cavity explosion-proof dust removal system according to claim 2, characterized in that: The radial multi-hole jet / vibration coordinated dust removal device includes a suction-release regulating airbag (9), an airbag control valve (22), an inflation pump (44), a pulse jet pipe (26), and an explosion-proof vibration motor (21). The explosion-proof vibration motor (21) is connected to the explosion-proof vibration baffle (36) through a sealed rigid connecting rod (38) that penetrates the shell container (1). One end of the inflation pump (44) and the pulse jet pipe (26) are connected to the suction-release regulating airbag (9) through the airbag control valve (22). The other side of the pulse jet pipe (26) extends into and coils inside the shell container (1) on the upper side of the explosion-proof vibration baffle (36). A device for detecting the gas at the outlet of the suction-release regulating airbag (9) is installed on the suction-release regulating airbag (9). A high-precision air pressure sensor (42) for measuring the blowing pressure; a standard gas flow meter (43) for measuring the amount of blowing air released each time the suction-release regulating airbag (9) is installed on the pulse blowing pipe (26); a multi-hole pulse nozzle (17) with its end extending into the bottom of each hydrophobic antistatic PTFE membrane filter bag (20) is connected to the pulse blowing pipe (26); the program control and acquisition system (30) controls the operation of the explosion-proof vibration motor (21), the airbag control valve (22) and the inflation pump (44) through the synchronous controller (29); the high-precision air pressure sensor (42) and the standard gas flow meter (43) are both electrically connected to the program control and acquisition system (30) through the synchronous controller (29).

8. The high-response detection and early warning pulse jet / vibration coordinated circumferential porous flow equalization cavity explosion-proof dust removal system according to claim 2, characterized in that: The inerting detection device includes a nitrogen storage tank (18), an argon storage tank (19), a premixing tank (11), a first explosion-proof air compressor (23-1), a second explosion-proof air compressor (23-2), and two gas flow controllers (39); a pair of inerting gas nozzles (25) and two pairs of inerting gas nozzles (25) are respectively installed on the visible dust collection box (16) and on the inner ring side wall of the porous circumferential flow equalization cavity (34); the outlet of the argon storage tank (19) and the outlet of the nitrogen storage tank (18) are respectively connected to the inlet of the premixing tank (11) through the two gas flow controllers (39); the inlet of the second explosion-proof air compressor (23-2) is connected to the outlet of the argon storage tank (19) through the first explosion-proof solenoid valve (24-1); the outlet of the second explosion-proof air compressor (23-2) is connected to the visible dust collection box (16). A pair of inert gas nozzles (25) on the first explosion-proof air compressor (23-1) are connected to each other; the air inlet of the first explosion-proof air compressor (23-1) is connected to the air outlet of the premix tank (11); the two pairs of inert gas nozzles (25) on the porous circumferential flow equalization cavity (34) are connected to the air outlet of the first explosion-proof air compressor (23-1) through the second explosion-proof solenoid valve (24-2) and the third explosion-proof solenoid valve (24-3); the first explosion-proof solenoid valve (24-1), the second explosion-proof solenoid valve (24-2) and the third explosion-proof solenoid valve (24-3) are all electrically connected to the program control and acquisition system (30) through the synchronous controller (29); the program control and acquisition system (30) controls the operation of the first explosion-proof air compressor (23-1), the second explosion-proof air compressor (23-2) and the two gas flow controllers (39) through the synchronous controller (29).

9. The high-response detection and early warning pulse jet / vibration coordinated circumferential porous flow equalization cavity explosion-proof dust removal system according to claim 1, characterized in that: Safety monitoring and alarm devices include dust concentration monitoring units, temperature monitoring units, pressure detection units, dust-laden gas flow / velocity monitoring units, and alarm units; The dust concentration monitoring mechanism is used to detect the dust concentration of the gas at both ends of the circumferential flow equalization inlet and outlet device; the dust-laden gas flow rate / velocity monitoring mechanism is used to detect the flow rate of the dust-laden gas at the inlet end of the circumferential flow equalization inlet and outlet device; the temperature monitoring mechanism is used to detect the temperature inside the dust collection device for early warning and control, and to issue an alarm; the pressure detection mechanism is used to detect the explosion overpressure signal inside the shell container (1) and the pressure difference between the upper and lower sides inside the shell container (1); the dust concentration monitoring mechanism, temperature monitoring mechanism, pressure detection mechanism, dust-laden gas flow rate / velocity monitoring mechanism and alarm mechanism are all electrically connected to the program control and acquisition system (30) through the synchronous controller (29); the alarm mechanism is used to issue a light alarm under the control of the program control and acquisition system (30) and the synchronous controller (29).

10. The test method for the high-response detection and early warning pulse jet / vibration coordinated circumferential porous flow equalization cavity explosion-proof dust removal system according to claim 1, comprising the following steps: Step 1: Instrument check: Check to ensure that the connections of each device are intact; check to ensure that the components in each device are working properly; check to ensure that the program control and acquisition system (30) can effectively and accurately control the program and acquire data; Step 2: Adjust the status of each device: Adjust the status of the detection, early warning and control dust collection device, the circumferential flow equalization air intake and exhaust device, the radial multi-hole jet / vibration coordinated dust cleaning device, the detection inerting device and the dual electrostatic elimination device; Step 3: Preset test parameters: Enter the control program required for the experiment into the program control and acquisition system (30) according to the requirements, set different test parameters for each device and the data acquisition frequency of the safety monitoring and alarm device; Step 4: Conduct testing: The program control and acquisition system (30) coordinates the control of each device through the synchronous controller (29) to make the explosion-proof dust removal system run; the program control and acquisition system (30) records the data collected by the safety monitoring and alarm devices; Step 5: Cleaning equipment: The radial multi-hole jet / vibration coordinated dust removal device cleans the dust collector of highly active metal dust, and the detection, early warning and control dust collection device collects the highly active metal dust and empties the detection, early warning and control dust collection device; the program control and acquisition system (30) records the data collected by the safety monitoring and alarm device; Step Six: Adjust Test Parameters: Repeat Steps Four and Five after changing a single test parameter until all tests are completed; Step 7: Equipment Inspection and Maintenance: Check whether the components in each device are intact; shut down all devices and disconnect the power supply; Step 8: Organize and archive the test data.

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