Eurobin ventilation system and control method

Abstract

The present application belongs to the technical field of warehouse equipment ventilation, and discloses a Euro warehouse ventilation system and a control method. The Euro warehouse ventilation system comprises a warehouse body, an explosion-proof axial flow fan, a coal powder loosening device, a multi-parameter sensing and collecting assembly, and a centralized control linkage control module. The top of the warehouse body is provided with a ventilation device, a skylight, an explosion-proof exhaust fan, an inert gas slow-release system, and a hierarchical audible and visual alarm device. The explosion-proof axial flow fan is connected to the internal space of the warehouse body through the skylight. The coal powder loosening device is arranged on the warehouse wall of the warehouse body. The multi-parameter sensing and collecting assembly is arranged in the interior of the warehouse body. The centralized control linkage control module is in communication connection with the multi-parameter sensing and collecting assembly, the ventilation device, the explosion-proof exhaust fan, the skylight, the explosion-proof axial flow fan, the coal powder loosening device, the inert gas slow-release system, and the hierarchical audible and visual alarm device. The present application can significantly improve the ventilation and harmful gas dilution capacity under the coal storage working condition, and simultaneously realize the hierarchical linkage control based on the three-level threshold of carbon monoxide concentration.

Description

Technical Field

[0001] This invention relates to the field of ventilation technology for warehouse equipment, specifically to a Euro warehouse ventilation system and control method. Background Technology

[0002] Euro warehouses are large, cylindrical, enclosed storage facilities. Their internal ventilation system is a crucial element in ensuring the safety of stored materials and is widely used in bulk material storage in industries such as power and ports. For coal-fired power plants, coal stored in Euro warehouses continuously produces harmful gases such as carbon monoxide during long-term storage due to coal powder oxidation. Therefore, a ventilation system is essential to maintain a safe air environment within the warehouse and prevent the accumulation of harmful gases that could lead to poisoning or explosions.

[0003] Currently, the Euro warehouses introduced by a domestic power plant are imported and customized equipment. Their original ventilation system is mainly based on the design for light grain and oil storage conditions, employing a ventilation mode with rubber vents on both sides of the warehouse roof bridge in conjunction with exhaust fans. However, this original design has the following technical problems when applied to large-capacity coal storage conditions in thermal power plants: First, the ventilation power of the original exhaust fans is limited, and their air exchange capacity cannot meet the ventilation and dilution requirements under high-load coal storage conditions, leading to the easy accumulation of harmful gases such as carbon monoxide in local dead zones. Second, the existing system only has data acquisition capabilities and lacks a graded linkage prevention and control mechanism based on carbon monoxide concentration. Ventilation and emergency response are disconnected. Once incomplete combustion of coal causes a rapid increase in carbon monoxide concentration, the system cannot automatically activate emergency enhanced ventilation or source control measures, posing a significant safety hazard of harmful gas accumulation reaching the lethal threshold, seriously threatening the lives of on-site workers.

[0004] Therefore, existing technologies have limitations in terms of ventilation capacity, which cannot meet the ventilation and dilution requirements under high-load coal storage conditions. At the same time, they lack a graded linkage prevention and control mechanism based on carbon monoxide concentration, and the problem of disconnect between ventilation and emergency response urgently needs to be solved. Summary of the Invention

[0005] The purpose of this invention is to provide a ventilation system and control method for coal storage warehouses to overcome the problems existing in the prior art. This invention can significantly improve the ventilation and air exchange and harmful gas dilution capabilities under coal storage conditions, and at the same time realize three-level threshold hierarchical linkage control based on carbon monoxide concentration.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a ventilation system for a warehouse, comprising: The top of the container is equipped with a ventilation system, skylight, explosion-proof exhaust fan, inert gas slow release system and graded audible and visual alarm device; The explosion-proof axial flow fan is connected to the internal space of the chamber through a skylight; A pulverized coal loosening device is installed on the wall of the silo. A multi-parameter sensing and acquisition component is installed inside the chamber. The centralized control module communicates with multi-parameter sensor acquisition components, ventilation devices, explosion-proof exhaust fans, skylights, explosion-proof axial flow fans, pulverized coal loosening devices, inert gas slow release systems, and graded audible and visual alarm devices.

[0007] According to one embodiment of the present invention, the ventilation device includes a roller shutter ventilation hood disposed on the top of the silo body, a water-retaining slope disposed on the outer side of the roller shutter ventilation hood, the roller shutter ventilation hood being connected to a centralized control module, and a dust filter being disposed at the ventilation channel inlet of the roller shutter ventilation hood, the dust filter being connected to the centralized control module.

[0008] According to one embodiment of the present invention, the pulverized coal loosening device includes a plurality of high-pressure pulse nozzles evenly arranged along the circumference of the inner wall of the silo. The high-pressure pulse nozzles are flush with the silo wall and do not protrude into the silo. The high-pressure pulse nozzles are connected to the power plant's compressed air system and are communicatively connected to the centralized control module.

[0009] According to one embodiment of the present invention, the inert gas slow release system includes a plurality of nitrogen slow release nozzles evenly arranged along the circumference of the top wall of the chamber, the nitrogen slow release nozzles being connected to a nitrogen gas source, and the nitrogen slow release nozzles being communicatively connected to a centralized control module.

[0010] Secondly, the present invention provides a control method for a warehouse ventilation system, the warehouse ventilation system based on the above embodiments comprising the following steps: The multi-parameter sensor acquisition component collects CO concentration data, temperature data, humidity data and material level data at multiple points in the silo in real time and transmits them to the centralized control module. The centralized control module executes filter linkage control based on material level data. The centralized control module performs graded linkage control of CO concentration based on CO concentration data, and performs temperature and humidity control based on temperature and humidity data; wherein, the graded linkage control of CO concentration has higher priority than temperature and humidity control. The CO concentration data is continuously monitored by the centralized control module. When the CO concentration data recovers to the preset recovery threshold and meets the preset time, it is restored step by step.

[0011] According to one embodiment of the present invention, the step of performing graded linkage control of CO concentration based on CO concentration data through the centralized control and linkage control module specifically includes: When the CO concentration data meets the warning threshold, the ventilation dilution mode is activated. The ventilation dilution mode includes controlling the roller shutter ventilation hood to be fully open, the explosion-proof exhaust fan to run at full load, and the dust filter to be kept open at the same time through the centralized control module. When the CO concentration data meets the warning threshold, the ventilation dilution mode and the enhanced ventilation mode are activated. The enhanced ventilation mode includes controlling the skylight to be fully open and the explosion-proof axial flow fan to run at full load through the centralized control module. When the CO concentration data meets the danger threshold, the ventilation dilution mode, enhanced ventilation mode, and source CO control mode are activated. The source CO control mode includes controlling the inert gas slow release system to start slow release through the centralized control module, the coal powder loosening device to operate at full load, and the graded audible and visual alarm device to start alarm. Specifically, when the CO concentration data meets the warning threshold, alert threshold, or danger threshold, temperature and humidity control is implemented on the covered humidity data.

[0012] According to one embodiment of the present invention, the warning threshold is: 50ppm≤CO concentration<200ppm; the alert threshold is: 200ppm≤CO concentration<400ppm; and the danger threshold is: 400ppm≤CO concentration.

[0013] According to one embodiment of the present invention, the step of performing temperature and humidity control through a centralized control module based on temperature and humidity data specifically includes: When the temperature or humidity inside the warehouse is higher than that of the external environment, the centralized control module controls the opening of the roller shutter ventilation cover and the start of the explosion-proof exhaust fan. When the temperature or humidity inside the silo is lower than or equal to the external environment, the centralized control module controls the roller shutter ventilation cover to close and the explosion-proof exhaust fan to stop.

[0014] According to one embodiment of the present invention, the step of executing filter linkage control based on material level data by the centralized control and linkage module specifically includes: When the coal unloading height exceeds the preset threshold, the dust filter screen will be shut off. When the coal unloading height is lower than or equal to the preset threshold, the dust filter is opened.

[0015] According to one embodiment of the present invention, the preset recovery threshold is: CO concentration ≤ 200 ppm.

[0016] The above technical solution has the following advantages or beneficial effects: Firstly, this invention provides a Euro warehouse ventilation system. Through a roller shutter ventilation hood, skylight, explosion-proof exhaust fan, and explosion-proof axial flow fan installed at the top of the warehouse, a four-level ventilation system is formed, significantly improving ventilation and air exchange and the dilution of harmful gases under coal storage conditions. This solves the problems of insufficient ventilation power and easy accumulation of harmful gases in existing systems. Simultaneously, through the cooperation of multi-parameter sensing and acquisition components and a centralized control module, a three-level threshold-based hierarchical linkage control based on carbon monoxide concentration is achieved. Differentiated handling strategies, including ventilation dilution, enhanced ventilation, source inert gas suppression, and graded alarms, are automatically matched at different levels of warning, alert, and danger. This constructs a complete closed-loop control link from passive dilution to active prevention and control, completely eliminating the original system's defect of disconnect between ventilation, alarm, and handling, and avoiding the major safety accident risk of harmful gases accumulating to lethal thresholds. Furthermore, all actuators are connected to the centralized control system to support automatic operation and remote intervention, eliminating the safety hazards of manual high-altitude operations and operations in toxic environments. This provides a standardized solution that is independently controllable and can be replicated in batches for the localization of imported Euro warehouse coal storage conditions.

[0017] Secondly, this invention provides a control method for a Euro warehouse ventilation system. By using multi-parameter sensing components to collect real-time environmental data within the warehouse and processing it uniformly by a centralized control module, it achieves coordinated automatic operation of filter linkage, CO concentration tiered linkage, and temperature and humidity control. The entire process requires no on-site human intervention, eliminating the safety risks associated with personnel operating in toxic environments. Simultaneously, by prioritizing CO concentration tiered linkage control over temperature and humidity control, it ensures that ventilation dilution efficiency is prioritized under conditions of excessive harmful gases, solving the problem of disconnect between ventilation, alarms, and emergency response in the original system. Furthermore, by using preset recovery thresholds and a step-by-step recovery mechanism, it avoids frequent start-stop fluctuations of the actuators, ensuring smooth and orderly switching between different control modes and improving the intelligent and refined management level of Euro warehouse ventilation and safety control. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the Eurocage ventilation system according to some embodiments of this specification; Figure 2 This is a simplified flowchart illustrating the control method of the Euro warehouse ventilation system according to some embodiments of this specification; Figure 3 This is a schematic diagram illustrating the specific flow of the control method for the Euro warehouse ventilation system according to some embodiments of this specification; In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Silo body; 2. Roller shutter ventilation hood; 3. Skylight; 4. Coal powder loosening device; 5. Inert gas slow release system; 6. Multi-parameter sensor acquisition component; 7. Explosion-proof exhaust fan; 8. Graded audible and visual alarm device; 9. Centralized control and linkage module. Detailed Implementation

[0019] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, 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.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] 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 mechanical connection, an electrical connection, or a communication connection; 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.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] The original ventilation system of the existing imported Euro warehouse is only suitable for the storage of light grains and oils. When used for large-capacity coal storage in thermal power plants, it has inherent defects such as easy aging of rubber vents, poor waterproofing, and insufficient ventilation capacity of exhaust fans. This leads to the easy accumulation of harmful gases such as carbon monoxide in the warehouse. In addition, the original system relies on manual high-altitude operation, which poses significant safety hazards.

[0026] Based on the above background, this application provides a Euro warehouse ventilation system. This system, by installing a ventilation device, a skylight 3, an explosion-proof exhaust fan 7, an inert gas slow release system 5, and a graded audible and visual alarm device 8 at the top of the warehouse body 1, and configuring a centralized control module 9 that is communicatively connected to a multi-parameter sensing and acquisition component 6 and the aforementioned execution devices, can realize real-time monitoring and automatic control of the environmental parameters inside the warehouse 1. While improving ventilation efficiency, it also lays the structural foundation for building an active prevention and control system, which is conducive to solving the technical problems of insufficient ventilation capacity and prominent safety hazards in existing systems.

[0027] Example 1: This invention provides a Euro warehouse ventilation system, such as Figure 1 As shown, it includes a storage body 1, which is a cylindrical structure used to store materials such as coal.

[0028] In this embodiment, the top of the chamber 1 is equipped with a ventilation device, a skylight 3, an explosion-proof exhaust fan 7, an inert gas slow-release system 5, and a graded audible and visual alarm device 8. The ventilation device facilitates gas exchange between the interior and exterior of the chamber 1 under normal operating conditions. The skylight 3 serves as an emergency or enhanced ventilation channel and is located on the top of the chamber. The explosion-proof exhaust fan 7, as an active ventilation device, is located on the top of the chamber 1 to forcibly expel air from the chamber. The inert gas slow-release system 5 is located on the inner side of the chamber roof and is used to release inert gas into the chamber when necessary. The graded audible and visual alarm device 8 is located both inside and outside the chamber 1 and is used to issue corresponding audible and visual alarms according to different warning levels.

[0029] The Euro warehouse ventilation system also includes an explosion-proof axial flow fan. The explosion-proof axial flow fan is connected to the internal space of the warehouse body 1 through the skylight 3. When the explosion-proof axial flow fan is activated, outside air can be forcibly drawn into the warehouse, and in conjunction with the explosion-proof exhaust fan 7, forced convection is formed, thereby improving ventilation dilution efficiency.

[0030] The Euro warehouse ventilation system also includes a pulverized coal loosening device 4. The pulverized coal loosening device 4 is installed on the wall of the warehouse body 1. The pulverized coal loosening device 4 is used to agitate the pulverized coal inside the warehouse, breaking its packing density, so as to prevent local heat accumulation or promote the release of accumulated gas inside.

[0031] The Euro warehouse ventilation system also includes a multi-parameter sensing and acquisition component 6. This component 6 is located inside the warehouse body 1. It is used to collect various environmental parameters within the warehouse in real time. Optionally, the multi-parameter sensing and acquisition component 6 may include, but is not limited to, a CO concentration sensor, a temperature sensor, a humidity sensor, a material level sensor, and an in-warehouse camera. Its arrangement should primarily cover the rotating area, the screw conveyor area, and dead zones at different heights within the warehouse to ensure comprehensive monitoring of local environmental parameters.

[0032] In this embodiment, the Euro warehouse ventilation system also includes a centralized control module 9. The centralized control module 9 is communicatively connected to the multi-parameter sensor acquisition component 6, the ventilation device, the explosion-proof exhaust fan 7, the skylight 3, the explosion-proof axial flow fan, the pulverized coal loosening device 4, the inert gas slow-release system 5, and the graded audible and visual alarm device 8. The centralized control module 9 can be an industrial computer, programmable logic controller, or other control device with data processing and logical judgment functions located in the central control room. This centralized control module 9 receives detection data from the multi-parameter sensor acquisition component 6 and, according to preset control logic, sends control commands to the connected execution devices, thereby achieving automated and remote operation of ventilation and safety control.

[0033] In this embodiment, the explosion-proof modification of the explosion-proof exhaust fan 7 mainly focuses on the motor, junction box, and fan blades. An explosion-proof motor is used, whose robust explosion-proof housing can withstand internal explosions and extinguish flames, preventing the external environment from being ignited. An explosion-proof junction box is used to ensure that the wiring terminals are sealed and to prevent spark leakage. Ordinary fan blades may generate sparks due to friction, so non-sparking materials such as cast aluminum alloy and stainless steel should be used, and sufficient gaps should be ensured between the blades and the housing to prevent friction.

[0034] The Euro warehouse ventilation system provided in this embodiment constructs an automated platform integrating monitoring, control, and execution through the communication connection between the centralized control module 9, multi-parameter sensor acquisition component 6, and various actuators. This structure eliminates the traditional manual on-site operation mode, effectively removing the safety risks of personnel working at heights in harsh conditions and in toxic gas environments. Simultaneously, by setting up a multi-stage ventilation structure including ventilation devices, skylights 3, explosion-proof exhaust fans 7, and explosion-proof axial flow fans, and cooperating with the inert gas slow-release system 5 and coal powder loosening device 4, it provides a hardware foundation for subsequent CO graded linkage control from "passive dilution" to "active prevention," which helps solve the problems of insufficient ventilation capacity and prominent safety hazards in existing Euro warehouse ventilation systems.

[0035] Example 2: The Euro warehouse ventilation system provided in this embodiment, based on embodiment 1, takes into account the local problems of the original factory-designed ventilation openings being made of rubber, which are prone to aging and have poor waterproofing after long-term use, and pose safety hazards for manual operation. It also takes into account the local problems of coal storage, where dense stacking may lead to local oxygen deficiency and heat accumulation, which in turn may cause incomplete combustion and produce carbon monoxide. Therefore, this embodiment further explains the specific implementation of the ventilation device and the coal powder loosening device 4.

[0036] In this embodiment, the ventilation device includes a roller shutter-type ventilation hood 2 installed on the top of the chamber 1. This roller shutter-type ventilation hood 2 replaces the original low-life rubber vents. Optionally, the roller shutter-type ventilation hood 2 is made of high-life tempered glass to improve its weather resistance and anti-aging capabilities, reducing replacement frequency and maintenance costs. The roller shutter-type ventilation hood 2 is configured as a roller shutter structure, and its opening and closing actions can be controlled by a drive motor, which is communicatively connected to the centralized control module 9. The centralized control module 9 can send control signals to control the rolling up (opening) or lowering (closing) of the roller shutter-type ventilation hood 2, thereby achieving remote or automatic operation without requiring manual high-altitude on-site work.

[0037] Preferably, the outer side of the roller shutter ventilation hood 2 is provided with a water-retaining slope. The water-retaining slope is used to guide rainwater flowing down the outer wall of the silo during rainy or snowy weather, effectively preventing rainwater from seeping into the silo through the gap between the roller shutter ventilation hood 2 and the silo body 1, thereby avoiding an increase in the moisture content of the pulverized coal.

[0038] Preferably, a dust filter is provided at the ventilation channel inlet of the roller shutter ventilation hood. The dust filter is an electric dust filter. The electric dust filter is electrically connected to the centralized control module 9 through an electric actuator (such as an electric damper actuator). The centralized control module 9 controls the opening and closing of the dust filter.

[0039] In this embodiment, the roller shutter ventilation hood 2 serves as the main channel for conventional ventilation, and its operation is controlled by the centralized control module 9. The roller shutter ventilation hood 2 not only solves the problems of easy aging of rubber materials and poor sealing, but also provides structural support for achieving full-process centralized automatic / remote operation of the ventilation system through its integrated electronically controlled drive mechanism. Its outer water-retaining slope structure further improves waterproof performance, which helps ensure the stability of coal quality inside the storage area and reduces subsequent processing problems caused by rainwater infiltration.

[0040] In this embodiment, the pulverized coal loosening device 4 includes several sets of high-pressure pulse nozzles evenly arranged along the circumference of the inner wall of the silo 1. The high-pressure pulse nozzles are used to inject high-pressure pulse airflow into the pulverized coal inside the silo to disrupt its packing density. Optionally, the number of high-pressure pulse nozzles is 12 sets, evenly distributed along the circumference of the silo wall of the silo 1 to achieve full coverage and disturbance of the pulverized coal inside the silo. To ensure the impact effect of the airflow, the pressure of the pulse airflow ejected by the high-pressure pulse nozzles can be 0.6-0.8 MPa.

[0041] To ensure the normal operation of the screw conveyor inside the silo, the high-pressure pulse nozzle is flush with the silo wall and does not protrude into the silo. This design ensures that the nozzle does not interfere with the rotational trajectory of the screw unloading equipment inside the silo, avoiding the risk of mechanical interference during equipment operation.

[0042] Preferably, the high-pressure pulse nozzle is connected to a power plant compressed air system. The power plant compressed air system serves as the air source, providing the required high-pressure airflow to the high-pressure pulse nozzle. The high-pressure pulse nozzle is communicatively connected to the centralized control module 9. The centralized control module 9 can automatically control the start or stop of the high-pressure pulse nozzles in the corresponding area based on preset logic or real-time detected environmental parameters within the chamber.

[0043] In this embodiment, the pulverized coal loosening device 4 uses a non-contact, high-pressure pulsed airflow to purge and loosen the coal bed. This effectively disrupts the density of the pulverized coal, creating more pores within the coal, which facilitates heat dissipation and oxygen distribution, thereby suppressing localized heat accumulation and incomplete combustion. Structurally, this device provides a physical intervention to reduce carbon monoxide production at its source. Its flush-mounted design with the bin wall ensures functionality while also guaranteeing compatibility with existing screw unloading equipment.

[0044] Example 3: The Euro warehouse ventilation system provided in this embodiment, based on embodiment 2, takes into account that when the carbon monoxide concentration in the warehouse reaches a high level, relying solely on ventilation dilution may not be sufficient to quickly suppress the continuous oxidation and gas generation process of pulverized coal. Therefore, the specific implementation method of the inert gas slow release system 5 is further explained.

[0045] In this embodiment, the inert gas slow-release system 5 includes a plurality of nitrogen slow-release nozzles evenly arranged along the circumference of the inner top wall of the silo 1. These nitrogen slow-release nozzles are used to slowly release nitrogen gas onto the surface area of ​​the pulverized coal inside the silo when triggering conditions are met. Optionally, the nitrogen slow-release nozzles are evenly arranged along the circumference of the silo top, with their nozzle direction set downwards to cover the entire coal surface of the silo. To ensure the normal operation of the screw conveyor inside the silo, the nitrogen slow-release nozzles are designed not to protrude from the silo structure, thereby causing zero interference to the rotational motion of the screw conveyor inside the silo.

[0046] Preferably, the nitrogen release nozzle is connected to a nitrogen source. The nitrogen source can be a nitrogen generation device within the power plant or a liquid nitrogen storage tank supply system purchased externally. The nitrogen release nozzle is communicatively connected to the centralized control module 9. The centralized control module 9 can automatically control the nitrogen release nozzle to open and release a quantitative amount of nitrogen into the chamber when the CO concentration reaches a preset threshold.

[0047] In this embodiment, the inert gas slow-release system 5 effectively reduces the oxygen concentration inside the silo by releasing nitrogen. For example, by controlling the amount of nitrogen released, the oxygen content inside the silo can be controlled below 12%, thereby inhibiting the oxidation reaction and incomplete combustion of pulverized coal at the source and blocking the continuous generation of carbon monoxide. This structural setup complements the ventilation dilution method, jointly constructing a dual safety guarantee system of passive dilution and active prevention. At the same time, as the nitrogen gas flow diffuses downwards, it can also play a certain non-contact loosening role on the coal surface, further strengthening the source control effect.

[0048] Example 4: This embodiment provides a control method for a Euro warehouse ventilation system, implemented based on any one of the aforementioned Euro warehouse ventilation systems in embodiments 1-3. For example... Figure 2 and Figure 3 As shown, it includes the following steps: Step 1: The multi-parameter sensor acquisition component 6 collects CO concentration data, temperature data, humidity data and material level data at multiple points in the silo in real time, and transmits the collected data to the centralized control module 9.

[0049] Specifically, the various sensors in the multi-parameter sensing and acquisition component 6 operate continuously according to a preset sampling frequency. The monitoring points of the CO concentration sensor should primarily cover the rotating area, the screw conveyor area, and blind spots at different heights within the chamber. After receiving the above data, the centralized control module 9 processes and stores the data as the basis for subsequent control decisions.

[0050] In one alternative approach, the centralized control module 9 uses the highest concentration value as the basis for linkage control to avoid missing local high concentrations of CO.

[0051] Step 2: The dust filter is controlled by the centralized control module 9 based on the received material level data.

[0052] Specifically, the dust filter installed inside the silo 1 is used to prevent harmful dust from escaping during ventilation. The centralized control module 9 compares the received real-time material level data with the preset material level threshold, and sends corresponding control commands to the drive mechanism of the dust filter based on the comparison result.

[0053] Specifically, the centralized control module 9 receives real-time material level data from the material level sensor in the multi-parameter sensing and acquisition component 6. The centralized control module 9 has a preset coal unloading height threshold, which can be set according to the geometry of the silo 1 and the actual working conditions. The centralized control module 9 compares the real-time material level data with the preset coal unloading height threshold and executes the switching control of the dust filter based on the comparison result.

[0054] Specifically, when the coal unloading height exceeds the preset threshold, it indicates a large accumulation of coal dust inside the silo. If the filter screen is opened at this time, a large amount of coal dust may escape from the filter screen under the action of the ventilation airflow. Therefore, the centralized control module 9 controls the dust filter screen to close to prevent harmful dust from escaping outside the silo and avoiding environmental pollution.

[0055] Conversely, when the coal unloading height is lower than or equal to the preset threshold, it indicates that the amount of coal dust accumulated in the silo is low and the space above the material level is large. In this case, it is necessary to make full use of the ventilation channels to ensure smooth airflow in the silo. Therefore, the centralized control module 9 controls the dust filter to open to increase the ventilation cross-sectional area, ensure smooth airflow circulation, and improve the dilution and discharge efficiency of harmful gases.

[0056] Furthermore, during the emergency CO reduction phase (i.e., during enhanced ventilation when the CO concentration reaches the warning or danger threshold), the centralized control module 9 forcibly keeps the dust filter constantly open until the CO concentration drops below the recovery threshold. This setting prioritizes maximizing ventilation volume in emergency situations to quickly reduce the CO concentration inside the silo. Once the CO concentration returns to a safe value and stabilizes, it reverts to the conventional material level linkage control logic described in this embodiment.

[0057] This embodiment uses a linkage control logic between the dust filter and the coal unloading height to enable the dust filter to automatically switch its on / off state according to the material level in the silo under normal operating conditions. This prevents dust overflow at high material levels while ensuring ventilation efficiency at low material levels. Furthermore, the redundant setting of forcing the filter to remain open during emergency conditions further enhances the pressure relief and exhaust capacity under sudden high CO concentration conditions.

[0058] Step 3: Execute graded linkage control of CO concentration based on CO concentration data, and execute temperature and humidity control based on temperature and humidity data; among them, graded linkage control of CO concentration has higher priority than temperature and humidity control.

[0059] In some embodiments, the centralized control module 9 performs graded linkage control of CO concentration based on the received CO concentration data. At the same time, the centralized control module 9 also performs temperature and humidity control based on temperature and humidity data.

[0060] Preferably, the centralized control module 9 has multiple preset control logic modules. During control execution, the CO concentration-level linkage control has the highest priority. When the CO concentration data reaches a preset threshold range, the centralized control module 9 automatically activates the corresponding CO concentration control mode and forcibly overrides the temperature and humidity control logic. For example, under normal operating conditions, the ventilation system operates according to temperature and humidity logic; that is, ventilation is activated when the temperature or humidity inside the chamber is higher than the external environment, and shut down otherwise. However, when the CO concentration triggers the threshold, the CO control logic automatically overrides the temperature and humidity logic, keeping the ventilation system fully open or maintaining enhanced ventilation to ensure priority for CO dilution efficiency. Simultaneously, under normal operating conditions where the CO concentration does not trigger the threshold, the centralized control module 9 performs normal temperature and humidity ventilation control based on temperature and humidity data.

[0061] Specifically, the centralized control module 9 has three preset CO concentration thresholds: a warning threshold, a alert threshold, and a danger threshold. The centralized control module 9 compares the real-time received CO concentration data with these three thresholds and executes the corresponding control mode based on the comparison results. First, when the CO concentration data meets the warning threshold, the ventilation dilution mode is activated. This mode includes the centralized control module 9 controlling the roller shutter ventilation hood 2 to fully open and simultaneously controlling the explosion-proof exhaust fan 7 to operate at full load. Furthermore, to ensure unobstructed ventilation and prevent dust overflow, the dust filter installed inside the silo remains open in this mode. During the warning threshold stage, the centralized control module 9 can also determine whether the coal dust loosening device 4 needs to be activated based on the silo temperature data. For example, if the local temperature inside the silo is ≥50℃, the coal dust loosening device 4 is automatically activated to operate at low power to prevent coal dust from accumulating heat. Secondly, when the CO concentration data meets the warning threshold, the ventilation dilution mode and the enhanced ventilation mode are activated. The enhanced ventilation mode includes: the centralized control module 9 controls the skylight 3 to be fully open, and simultaneously controls the explosion-proof axial flow fan to run at full load. At this point, a four-way strong convection ventilation system is formed inside the silo: the roller shutter ventilation hood 2, the explosion-proof exhaust fan 7, the skylight 3, and the explosion-proof axial flow fan, maximizing CO dilution efficiency. Simultaneously, the centralized control module 9 automatically starts the coal powder loosening device 4 to run at full load, loosening the coal powder throughout the silo. Finally, when the CO concentration data meets the danger threshold, the ventilation dilution mode, the enhanced ventilation mode, and the source CO control mode are activated. The source CO control mode includes: the centralized control module 9 controls the inert gas slow release system 5 to start slow release, releasing inert gas into the silo to reduce oxygen content and inhibit coal powder oxidation and incomplete combustion from the source. Simultaneously, the centralized control module 9 controls the coal powder loosening device 4 to continue running at full load to disperse accumulated hot coal powder. In addition, the centralized control module 9 also controls the hierarchical audible and visual alarm device 8 to activate the alarm and send audible and visual warning signals to the central control room and the warehouse site.

[0062] In this embodiment, when the CO concentration data meets any of the aforementioned warning threshold, alert threshold, or danger threshold, the CO concentration graded linkage control automatically overrides the temperature and humidity control logic executed based on humidity data. That is, during periods of excessive CO concentration, the operating state of the ventilation system is entirely determined by the CO control logic and is no longer affected by temperature and humidity conditions, thus prioritizing the dilution efficiency of harmful gases.

[0063] In this embodiment, the preset three-level CO concentration thresholds within the centralized control module 9 are as follows: The warning threshold is: 50ppm ≤ CO concentration < 200ppm. When the highest CO concentration at multiple points in the warehouse falls within this range, the centralized control module 9 determines that the current CO concentration has reached the warning level and automatically activates the ventilation and dilution mode.

[0064] The warning threshold is: 200ppm ≤ CO concentration < 400ppm. When the highest CO concentration at multiple points in the warehouse falls within this range, the centralized control module 9 determines that the current CO concentration has reached the warning level and automatically activates the enhanced ventilation mode based on the ventilation dilution mode.

[0065] The danger threshold is: 400ppm ≤ CO concentration. When the highest CO concentration at multiple points in the warehouse reaches or exceeds this value, the centralized control module 9 determines that the current CO concentration has reached a dangerous level. Based on the ventilation dilution mode and enhanced ventilation mode, it automatically starts the source CO control mode, and at the same time triggers the graded audible and visual alarm device 8 and process operation interlock.

[0066] The specific values ​​of the aforementioned three threshold levels provide a clear and quantifiable benchmark for the centralized control module 9 to make graded judgments and implement differentiated control measures. By setting the warning threshold to 50 ppm, the alert threshold to 200 ppm, and the danger threshold to 400 ppm, the ventilation system and safety control measures can accurately match the corresponding response intensity at different risk levels, thereby achieving the rational allocation and efficient utilization of prevention and control resources while ensuring personnel safety.

[0067] In some embodiments, when the temperature inside the chamber 1 is higher than the external ambient temperature, or when the humidity inside the chamber 1 is higher than the external ambient humidity, the centralized control module 9 determines that favorable conditions for natural ventilation exist, i.e., the density of hot or humid air inside the chamber is low, allowing it to naturally rise and be exhausted outside. At this time, the centralized control module 9 controls the roller shutter ventilation hood 2 to open, and simultaneously controls the explosion-proof exhaust fan 7 to start operating, to assist in exhausting the high-temperature, high-humidity air inside the chamber and introducing lower-temperature, lower-humidity air from the outside, thereby achieving ventilation, cooling, and dehumidification.

[0068] Conversely, when the temperature inside the silo 1 is lower than or equal to the external ambient temperature, and the humidity inside the silo 1 is lower than or equal to the external ambient humidity, the centralized control module 9 determines that favorable conditions for natural ventilation are not present. Opening the ventilation system would instead introduce hot, humid air from outside into the silo, which would be detrimental to the stability of the coal quality inside. In this case, the centralized control module 9 controls the roller shutter ventilation hood 2 to close and simultaneously stops the explosion-proof exhaust fan 7 to maintain relative stability of the environment inside the silo.

[0069] Specifically, the temperature and humidity control logic in this embodiment only takes effect under normal operating conditions when the CO concentration does not trigger the warning threshold. As mentioned above, the priority of the graded linkage control of CO concentration is higher than that of temperature and humidity control. When the CO concentration reaches the warning threshold (i.e., CO concentration ≥ 50 ppm), the centralized control module 9 automatically overrides the above-mentioned temperature and humidity control logic, forcibly keeping the roller shutter ventilation hood 2 fully open and the explosion-proof exhaust fan 7 running at full load to ensure that CO dilution efficiency is prioritized. After the CO concentration recovers to below the safe value and meets the stabilization time, the centralized control module 9 then restores to the above-mentioned normal temperature and humidity ventilation logic.

[0070] This embodiment establishes conventional ventilation control logic based on a comparison of internal and external temperature and humidity. This allows the ventilation system to automatically start and stop under normal operating conditions according to actual weather conditions, avoiding ineffective or reverse operation of the ventilation equipment. This ensures a relatively stable internal environment while achieving energy conservation and consumption reduction. Furthermore, by explicitly defining the logic's priority based on CO control, it ensures that in the face of safety risks, all conventional energy-saving logic yields to safety control requirements.

[0071] Step 4: Continuously monitor CO concentration. When the CO concentration recovers to the preset recovery threshold and meets the preset time, restore it step by step.

[0072] Preferably, the CO concentration data in the warehouse is continuously monitored by the centralized control module 9. When the CO concentration data recovers to the preset recovery threshold and the recovery state continues to meet the preset stabilization time, each actuator is gradually restored to a lower level of operation or normal control logic.

[0073] Specifically, during the execution of the graded linkage control of CO concentration, the centralized control module 9 continuously monitors and judges the CO concentration data. When the CO concentration gradually decreases from a high level and eventually drops below the preset recovery threshold, and this low concentration state is maintained stably for a preset duration (e.g., 15 or 20 minutes), the centralized control module 9 controls each actuator to shut down or degrade operation in the reverse order of its startup sequence. For example, first shut down the emergency enhanced ventilation equipment, then restore the normal ventilation state, and finally restore the normal temperature and humidity control logic.

[0074] Specifically, during the execution of each control mode, the centralized control module 9 continuously monitors changes in CO concentration. When the CO concentration decreases and the recovery conditions are met, the centralized control module 9, following the principle of step-by-step recovery, sequentially shuts down the inert gas slow release system 5, which is activated under the danger threshold, then shuts down the skylight 3 and the explosion-proof axial flow fan, which are activated under the warning threshold, and finally restores to the warning threshold state. After the CO concentration further stabilizes, it resumes the normal temperature and humidity ventilation logic.

[0075] Specifically, the preset recovery threshold is: CO concentration ≤ 200 ppm. That is, when the centralized control module 9 detects that the highest CO concentration at multiple points in the warehouse has dropped to 200 ppm or below, it determines that the CO concentration has reached the basic condition for recovery.

[0076] In practical implementation, the centralized control module 9 not only requires the CO concentration to drop below the recovery threshold, but also requires that this low concentration state remain stable for a preset time before the step-by-step recovery operation can be performed. This stabilization time requirement aims to avoid frequent start-ups and shutdowns of the actuators due to short-term fluctuations in CO concentration, ensuring the reliability and safety of the recovery operation.

[0077] Under different control levels, the required stabilization time can be set to different durations. For example, when the CO concentration drops from the danger threshold (≥400ppm) to the recovery threshold (≤200ppm) and stabilizes for 20 minutes, the centralized control module 9 first shuts down the inert gas slow release system 5, stopping the injection of nitrogen into the chamber; then it sequentially shuts down the explosion-proof axial flow fan and the electric emergency skylight 3, ending the enhanced ventilation mode and restoring the system from the danger threshold control state to the warning threshold control state. After the CO concentration continues to stabilize and meets the recovery conditions corresponding to the warning threshold, it further restores to the early warning threshold control state, and finally returns to the normal temperature, humidity, and ventilation control logic.

[0078] Once the CO concentration drops from the warning threshold (200ppm ≤ CO < 400ppm) to the recovery threshold (≤ 200ppm) and stabilizes for 15 minutes, the centralized control module 9 sequentially shuts down the explosion-proof axial flow fan and the electric emergency skylight 3, ending the enhanced ventilation mode and reverting to the warning threshold control state. Subsequently, after the CO concentration further stabilizes and meets the recovery conditions of the warning threshold (e.g., CO concentration ≤ 30ppm and stabilizes for 10 minutes), the system reverts to the normal temperature and humidity ventilation control logic.

[0079] The specific stabilization time for the aforementioned step-by-step recovery can be adaptively adjusted according to actual operating conditions and warehouse volume, and is not fixed. This embodiment, by setting recovery thresholds and corresponding stabilization time requirements, ensures a smooth and orderly switching process between control modes at each level, avoiding frequent start-ups and shutdowns of actuators caused by short-term fluctuations in CO concentration, thus ensuring the stability and reliability of the control system.

[0080] In some embodiments, special operating conditions are also included, namely low visibility conditions: when the camera inside the chamber detects visibility <1 meter, the refresh frequency of CO detection data is increased (from 1 time / minute to 1 time / 10 seconds), and the ventilation system maintains ventilation above the warning threshold by default to prevent CO accumulation in dead zones; emergency breathing apparatus operation: if personnel need to wear positive pressure breathing apparatus to enter the chamber due to equipment failure, the central control can manually switch to the work protection mode, forcibly maintaining the warning threshold ventilation, and monitor the CO concentration in real time during operation. Once it is ≥300ppm, an audible and visual alarm will be immediately triggered and personnel will be reminded to evacuate; equipment failure redundancy: if a CO sensor fails, the system will automatically switch to the average value of the remaining normal sensors as the control basis, and the central control will issue a pop-up alarm to remind personnel to perform maintenance; if a single ventilation device fails, the backup device will be activated to ensure that the ventilation capacity is not reduced.

[0081] The control method for the Euro warehouse ventilation system provided by this invention comprehensively judges and processes the CO concentration, temperature, humidity, and material level data collected by the multi-parameter sensing and acquisition component 6 through the centralized control module 9. This achieves automated and intelligent control of the warehouse ventilation device, filter, and other subsequent actuators. This method prioritizes graded linkage control based on CO concentration, ensuring personnel safety while also considering energy-saving operation requirements under normal conditions. It helps solve the problems of existing systems relying on manual operation and delayed emergency response.

[0082] This invention addresses the inherent defects and pain points of imported Euro warehouse ventilation systems in coal storage operations. Through reuse and intelligent upgrades, it achieves comprehensive optimization of ventilation and CO control. First, the original low-life rubber vents are replaced with roller-type tempered glass covers 2, and a water-retaining slope and filter are added to fundamentally solve the problems of rubber aging, waterproofing failure, and dust leakage. A four-level ventilation system is constructed, consisting of conventional explosion-proof exhaust fans 7, glass covers 2, emergency skylights 3, and explosion-proof axial flow fans. The exhaust fan layout is optimized to completely eliminate insufficient ventilation capacity, dead air zones, and the risk of CO accumulation. In terms of safety management, centralized remote control and automated operation replace manual on-site work, avoiding safety risks at high altitudes, in severe weather, and in high CO and low visibility conditions. Based on a three-level CO concentration classification and linkage logic, a graded audible and visual alarm device 8 is linked with process interlocks to prevent the accumulation of lethal thresholds from the technical source. Simultaneously, passive dilution is upgraded to active prevention and control, adding an inert gas slow-release system 5, a pulverized coal loosening device 4, and a silo wall temperature sensor. This is linked to the temperature, humidity, and CO data in the multi-parameter sensing and acquisition component 6 to suppress pulverized coal oxidation and heat accumulation, reducing CO generation. All measures are connected to the centralized control module 9, supporting automatic operation and remote intervention. This solution directly reuses existing CO detection and material level monitoring modules, all using domestically produced configurations, forming an independent and controllable transformation standard, eliminating dependence on foreign technology. The intelligent centralized control system reduces reliance on experienced personnel, allowing new staff to operate in a standardized manner, significantly saving labor costs and improving operation and maintenance efficiency; it also ensures a stable energy supply chain, reducing economic losses from production stoppages, and is compatible with smart zero-carbon park planning. Adding in-silo cameras and multi-point CO detection optimization enables real-time monitoring of operating conditions, and includes equipment fault redundancy and supplementary logic for special operating conditions to ensure stable system operation. This transformation is low-cost, highly adaptable, and can be replicated in batches with similar imported equipment, possessing both practicality and strategic value.

[0083] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the above embodiments should be considered exemplary rather than restrictive in all respects; the scope of protection of the present invention is defined by the appended claims, not by the foregoing description, and thus all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0084] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity; those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is merely illustrative of the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solutions based on the technical concept proposed in this invention fall within the scope of protection of the claims of this invention.

Claims

1. A ventilation system for a Euro warehouse, characterized in that, include: The container (1) is equipped with a ventilation device, a skylight (3), an explosion-proof exhaust fan (7), an inert gas slow release system (5), and a graded sound and light alarm device (8) on the top. An explosion-proof axial flow fan is connected to the internal space of the silo (1) through a skylight (3); A coal powder loosening device (4) is installed on the wall of the silo body (1); A multi-parameter sensing and acquisition component (6) is installed inside the chamber (1); The centralized control module (9) is connected to the multi-parameter sensor acquisition component (6), ventilation device, explosion-proof exhaust fan (7), skylight (3), explosion-proof axial flow fan, coal powder loosening device (4), inert gas slow release system (5) and graded sound and light alarm device (8).

2. The Euro warehouse ventilation system according to claim 1, characterized in that, The ventilation device includes a roller shutter ventilation hood (2) installed on the top of the silo (1). The outer side of the roller shutter ventilation hood (2) is provided with a water-blocking slope. The roller shutter ventilation hood (2) is connected to the centralized control module (9). A dust filter is provided at the ventilation channel entrance of the roller shutter ventilation hood (2). The dust filter is connected to the centralized control module (9).

3. The Euro warehouse ventilation system according to claim 1, characterized in that, The coal powder loosening device (4) includes several sets of high-pressure pulse nozzles evenly arranged along the inner circumference of the silo body (1). The high-pressure pulse nozzles are flush with the silo wall and do not protrude into the silo. The high-pressure pulse nozzles are connected to the power plant compressed air system and are communicatively connected to the centralized control module (9).

4. The Euro warehouse ventilation system according to claim 1, characterized in that, The inert gas slow release system (5) includes several nitrogen slow release nozzles evenly arranged along the circumference of the inner top wall of the chamber (1). The nitrogen slow release nozzles are connected to a nitrogen gas source and are communicatively connected to the centralized control module (9).

5. A control method for a Euro warehouse ventilation system, characterized in that, The Euro warehouse ventilation system according to any one of claims 1-4 includes the following steps: The CO concentration data, temperature data, humidity data and material level data of multiple points in the silo are collected in real time by the multi-parameter sensor acquisition component (6) and transmitted to the centralized control module (9). The filter screen linkage control is executed by the centralized control module (9) based on the material level data; The centralized control module (9) performs graded linkage control of CO concentration based on CO concentration data, and performs temperature and humidity control based on temperature and humidity data; wherein, the graded linkage control of CO concentration has a higher priority than temperature and humidity control. The CO concentration data is continuously monitored by the centralized control module (9). When the CO concentration data recovers to the preset recovery threshold and meets the preset time, it is restored step by step.

6. The control method for the Euro warehouse ventilation system according to claim 5, characterized in that, The step of performing graded linkage control of CO concentration based on CO concentration data through the centralized control module (9) specifically includes: When the CO concentration data meets the warning threshold, the ventilation dilution mode is activated. The ventilation dilution mode includes controlling the roller shutter ventilation hood (2) to be fully open and the explosion-proof exhaust fan (7) to be fully loaded through the centralized control module (9), while the dust filter is always open. When the CO concentration data meets the warning threshold, the ventilation dilution mode and the enhanced ventilation mode are activated. The enhanced ventilation mode includes controlling the skylight (3) to be fully open and the explosion-proof axial flow fan to run at full load through the centralized control module (9). When the CO concentration data meets the danger threshold, the ventilation dilution mode, the enhanced ventilation mode and the source control CO mode are activated. The source control CO mode includes controlling the inert gas slow release system (5) to start slow release through the centralized control linkage control module (9), the coal powder loosening device (4) to run at full load, and the graded sound and light alarm device (8) to start alarm. Specifically, when the CO concentration data meets the warning threshold, alert threshold, or danger threshold, temperature and humidity control is implemented on the covered humidity data.

7. The control method for the Euro warehouse ventilation system according to claim 6, characterized in that, The warning threshold is: 50ppm≤CO concentration<200ppm; the alert threshold is: 200ppm≤CO concentration<400ppm; and the danger threshold is: 400ppm≤CO concentration.

8. The control method for the Euro warehouse ventilation system according to claim 5, characterized in that, The temperature and humidity control performed by the centralized control module (9) based on temperature and humidity data specifically includes: When the temperature or humidity inside the silo (1) is higher than that of the external environment, the centralized control module (9) controls the roller shutter ventilation hood (2) to open and the explosion-proof exhaust fan (7) to start. When the temperature or humidity inside the silo (1) is lower than or equal to the external environment, the centralized control module (9) controls the roller shutter ventilation hood (2) to close and the explosion-proof exhaust fan (7) to stop.

9. The control method for the Euro warehouse ventilation system according to claim 5, characterized in that, The process of executing filter linkage control through the centralized control module (9) based on material level data specifically includes: When the coal unloading height exceeds the preset threshold, the dust filter screen will be shut off. When the coal unloading height is lower than or equal to the preset threshold, the dust filter will be opened.

10. The control method for the Euro warehouse ventilation system according to claim 5, characterized in that, The preset recovery threshold is: CO concentration ≤ 200ppm.

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