Intelligent fire extinguishing system and method for coal mine goaf

Abstract

The application provides a coal mine goaf intelligent fire extinguishing system and method, the coal mine goaf intelligent fire extinguishing system comprises a fire extinguishing unit, the fire extinguishing unit comprises a control component, a gas storage component and a fire extinguishing branch, the gas storage component is connected with the fire extinguishing branch through the control component, the gas storage component is used for storing inert gas, the fire extinguishing branch comprises a fire extinguishing pipeline, a monitoring component and a fire extinguishing nozzle, at least part of the fire extinguishing pipeline is arranged in the goaf, the monitoring component and the fire extinguishing nozzle are connected with the fire extinguishing pipeline, the monitoring component is electrically connected with the control component, a plurality of fire extinguishing units are arranged in one-to-one correspondence with a plurality of goafs, the fire extinguishing unit further comprises a conveying pipeline, one conveying pipeline is connected with the fire extinguishing pipelines in the two adjacent fire extinguishing units, the conveying pipeline is provided with a flow regulating valve, and the flow regulating valve is electrically connected with the control component.The coal mine goaf intelligent fire extinguishing system has the advantages of fast fire extinguishing response speed and good fire extinguishing effect.

Description

Technical Field

[0001] This invention belongs to the technical field of fire extinguishing equipment for coal mine goaf areas, specifically, it relates to an intelligent fire extinguishing system and method for coal mine goaf areas. Background Technology

[0002] Fires in coal mine goaf areas are one of the major hazards threatening safe production in coal mines. When coal comes into contact with air, it undergoes a slow, exothermic oxidation reaction. When the heat accumulates to a certain level, especially deep in poorly ventilated goaf areas, it can easily ignite spontaneous combustion of the coal, forming a hidden fire source that is difficult to detect and control.

[0003] In related technologies, fire prevention and extinguishing systems often operate as independent subsystems, lacking effective information exchange and collaborative mechanisms with the mine's ventilation and production systems. The formulation and execution of fire prevention and extinguishing strategies cannot be adjusted in real-time and adaptively based on dynamically changing environmental parameters underground (such as ventilation network resistance, goaf leakage, and working face advance speed), resulting in insufficient accuracy and timeliness of fire prevention and extinguishing measures. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose an intelligent fire extinguishing system for coal mine goaf areas, which has the advantages of fast fire extinguishing response and good fire extinguishing effect.

[0006] The intelligent fire extinguishing system for coal mine goaf areas according to this invention includes:

[0007] The fire extinguishing unit includes a control component, a gas storage component, and a fire extinguishing branch circuit. The gas storage component is connected to the fire extinguishing branch circuit via the control component, and the gas storage component is used to store inert gas. The fire extinguishing branch includes a fire extinguishing pipeline, a monitoring component, and fire extinguishing nozzles. At least a portion of the fire extinguishing pipeline is located within the goaf area, and its extension direction is parallel to the extension direction of the goaf area. Both the monitoring component and the fire extinguishing nozzles are connected to the fire extinguishing pipeline. The monitoring component is electrically connected to the control component, which receives monitoring information transmitted by the monitoring component and controls the gas flow rate discharged from the gas storage component based on the monitoring information. The fire extinguishing unit comprises multiple units, each corresponding to one of the multiple goaf areas. Each fire extinguishing unit also includes a delivery pipeline, with one delivery pipeline connected to the fire extinguishing pipelines of two adjacent fire extinguishing units. The delivery pipeline has a flow regulating valve, which is electrically connected to the control component. When one of the fire extinguishing units is in a fire environment, the gas storage components in the remaining fire extinguishing units deliver at least half of the inert gas to the fire extinguishing unit in the fire environment through the delivery pipeline.

[0008] The intelligent fire extinguishing system for coal mine goaf areas in this invention can capture subtle signs of an early fire (such as changes in temperature and gas composition) in real time and immediately activate the gas storage components and flow control valves to respond, improving the success rate of early warning and initial fire suppression. Furthermore, by connecting multiple independent fire extinguishing units through delivery pipelines and flow control valves, a smart network capable of dynamic resource allocation is formed, enhancing the fire extinguishing mechanism and the ability to respond to large-scale disasters of the entire mine fire extinguishing system, and ensuring the availability of fire extinguishing resources in extreme situations.

[0009] In some embodiments, when any one of the fire extinguishing units is in a fire environment, the control unit controls the remaining fire extinguishing units not in a fire environment to proportionally distribute the inert gas stored in them. A portion of this gas is delivered to the fire extinguishing unit in the fire environment for direct fire extinguishing, while the other portion is delivered to at least one other fire extinguishing unit adjacent to the fire unit to pre-inertize potential fire spread paths.

[0010] In some embodiments, the intelligent fire extinguishing system for coal mine goaf areas according to the present invention further includes a gas replenishment unit, which is connected to at least one of the fire extinguishing units and is used to supply inert gas to the fire extinguishing units in a fire environment and / or the fire extinguishing units not in a fire environment.

[0011] In some embodiments, the fire extinguishing nozzle includes an air curtain nozzle and an atomizing nozzle. When the fire extinguishing unit is in a fire environment, the atomizing nozzle near the fire source sprays out atomized gas, and the fire extinguishing nozzle adjacent to the atomizing nozzle sprays out air curtain-like gas from the air curtain nozzle.

[0012] In some embodiments, the intelligent fire extinguishing system for coal mine goaf areas of the present invention further includes an early warning unit, which is electrically connected to the fire extinguishing unit and is located within the goaf area. The early warning unit is used to monitor ventilation parameters, morphology, and fire data in the goaf area, and to simulate potential fire spread paths based on the data. If any of the fire extinguishing units is in a fire environment, the early warning unit is used to send an early warning signal to the fire extinguishing units not in a fire environment, so that the fire extinguishing units not in a fire environment can deliver gas to the fire extinguishing units in a fire environment.

[0013] The intelligent fire extinguishing method for coal mine goaf areas according to this invention, which utilizes the intelligent fire extinguishing system for coal mine goaf areas described in any of the above embodiments, includes the following steps: Real-time acquisition of monitoring information from multiple pre-set fire extinguishing units within the goaf area, the monitoring information including environmental parameters characterizing the fire state; Based on the monitoring information, the fire area is determined, and a fire extinguishing signal is sent to the fire extinguishing unit in the fire environment; Control the remaining fire extinguishing units that are not in a fire state, and distribute the prepared inert gas in a proportionate manner. A portion of the inert gas is delivered to the fire extinguishing units in the fire environment for direct fire extinguishing, and another portion is delivered to non-fire areas adjacent to the fire area. The amount of inert gas delivered to the fire extinguishing units in the fire environment is at least half of the total amount of prepared inert gas.

[0014] In some embodiments, the intelligent fire extinguishing method for coal mine goaf areas according to the present invention further includes the following steps: Real-time monitoring of inerting effect parameters in the fire area and its adjacent goaf area, and dynamic adjustment of the total flow rate and / or distribution ratio of the inerting gas based on the deviation between the inerting effect parameters and the preset target value.

[0015] In some embodiments, the intelligent fire extinguishing method for coal mine goaf areas according to the present invention further includes the following steps: Based on real-time ventilation parameters, goaf morphology data, and fire development trends, a fire spread prediction model is constructed. The potential fire spread path is calculated using the prediction model. One or more non-fire areas located along the potential spread path are identified as target areas for constructing inertization barriers.

[0016] In some embodiments, the intelligent fire extinguishing method for coal mine goaf areas according to the present invention further includes the following steps: Assess the total inert gas reserves of all fire extinguishing units. When the total reserves are lower than the safety reserve threshold, activate the centralized gas replenishment unit connected to the external gas source of the mine. Determine the priority and allocation scheme of gas replenishment based on the gas reserves of each fire extinguishing unit and its distance from the fire source.

[0017] In some embodiments, the intelligent fire extinguishing method for coal mine goaf areas according to the present invention further includes the following steps: Once the area where the fire occurred is identified, the corresponding fire extinguishing unit is activated, and at least one fire extinguishing nozzle in the vicinity of the fire area is controlled to spray inert gas in atomization mode. Other fire extinguishing nozzles adjacent to the fire extinguishing nozzle are controlled to spray inert gas in air curtain mode, forming a directional gas isolation barrier. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the intelligent fire extinguishing system for coal mine goaf areas according to an embodiment of the present invention.

[0019] Figure 2 This is a partial structural diagram of the fire extinguishing pipeline of the intelligent fire extinguishing system for coal mine goaf areas according to an embodiment of the present invention.

[0020] Figure label: 100. Goaf area, 10. Fire extinguishing unit; 10a. First fire extinguishing unit; 10b. Second fire extinguishing unit; 10c. Third fire extinguishing unit; 101. Delivery pipeline; 102. Flow regulating valve. 20. Fire extinguishing piping; 201. Fire extinguishing nozzle; 2011. Air curtain nozzle; 2012. Atomizing nozzle. 30. Gas replenishment unit. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] The following describes an intelligent fire extinguishing system for coal mine goaf areas according to an embodiment of the present invention.

[0023] like Figure 1 and Figure 2 As shown, the intelligent fire extinguishing system for a coal mine goaf 100 according to an embodiment of the present invention includes a fire extinguishing unit 10.

[0024] The fire extinguishing unit 10 includes a control component, a gas storage component, and a fire extinguishing branch. The gas storage component is connected to the fire extinguishing branch through the control component and is used to store inert gas.

[0025] Understandably, the gas storage unit is connected to the fire extinguishing branch via control components, and its core purpose is to store inert gas for fire suppression. When a fire is detected, the system can rapidly release high-pressure inert gas. After being injected into the fire zone, the inert gas quickly dilutes the oxygen concentration and cools the area, effectively suffocating and suppressing the fire. This is crucial for extinguishing rapidly developing, concealed fire sources within 100 meters of the goaf, buying valuable time to control the initial fire.

[0026] The inert gas includes nitrogen, or it can be carbon dioxide.

[0027] The fire extinguishing branch includes a fire extinguishing pipeline 20, a monitoring component, and a fire extinguishing nozzle 201. At least a portion of the fire extinguishing pipeline 20 is located within the goaf 100, and the extension direction of the fire extinguishing pipeline 20 is parallel to the extension direction of the goaf 100. The monitoring component and the fire extinguishing nozzle 201 are both connected to the fire extinguishing pipeline 20. The monitoring component is electrically connected to the control component. The control component is used to receive the monitoring information transmitted by the monitoring component and control the gas flow rate discharged from the gas storage component according to the monitoring information.

[0028] It is understandable that, such as Figure 1 and Figure 2 As shown, the fire extinguishing pipeline 20 can be fixed at the top of the goaf 100, and the outlet of the fire extinguishing nozzle 201 is arranged downwards. Thus, when the gas sprayed by the fire extinguishing nozzle 201 can be quickly sprayed towards the fire area of ​​the goaf 100, it enhances the diffusion ability and coverage of the inert gas in the goaf 100, and makes it mix with the air in the fire area more quickly and evenly, thereby establishing an effective inertization and asphyxiation environment in a short time, and improving the utilization rate of the extinguishing agent and the extinguishing efficiency.

[0029] By placing the extinguishing agent delivery network in front of and parallel to the potential fire line, it ensures that the inert gas can uniformly and extensively cover the entire goaf area 100, especially the area with the most severe oxidation and heat release, thus achieving source-based and three-dimensional coverage of concealed fire sources and overcoming the shortcomings of traditional external injection methods.

[0030] The monitoring component is connected to the fire extinguishing pipeline 20 and directly electrically connected to the control component to collect environmental parameter information (such as temperature, carbon monoxide concentration, etc.) within the goaf 100 in real time. The monitoring component can be connected to the fire extinguishing pipeline 20, or there can be multiple monitoring components, which are set at different heights within the goaf 100 to enable more comprehensive monitoring of environmental parameter information within the goaf 100.

[0031] In other words, the structure of placing the monitoring point on the fire extinguishing pipeline 20 allows the sensor to directly and sensitively detect the occurrence and development of the fire source. Its technical effect is to provide the control components with high-precision, low-latency decision-making data, thereby achieving early warning and rapid response to fires and solving the problem of difficult detection of concealed fire sources.

[0032] Preferably, there are multiple fire extinguishing units 10, and the multiple fire extinguishing units 10 are arranged one-to-one with multiple goaf areas 100. The fire extinguishing unit 10 also includes a delivery pipeline 101. One delivery pipeline 101 is connected to the fire extinguishing pipeline 20 in two adjacent fire extinguishing units 10. The delivery pipeline 101 has a flow regulating valve 102, which is electrically connected to the control component. When one of the multiple fire extinguishing units 10 is in a fire environment, the gas storage components in the other fire extinguishing units 10 deliver at least half of the inert gas to the fire extinguishing unit 10 in the fire environment through the delivery pipeline 101.

[0033] Understandably, multiple fire suppression units 10 form a cross-regional gas support network through delivery pipelines 101. This means that when a unit faces a major fire that exceeds its own processing capacity, it can draw on at least half of its gas reserves from neighboring units to form a local advantage and ensure the system's strong ability to cope with large-scale fires.

[0034] A flow regulating valve 102 is installed on the delivery pipeline 101 and electrically connected to the control unit to precisely regulate the flow rate of the support gas. The flow regulating valve 102 enables precise and controllable resource allocation across units. The control unit can dynamically calculate and instruct the flow regulating valve 102 to open to the appropriate degree based on the severity of the fire, ensuring sufficient support for the fire-fighting unit while avoiding resource waste or excessive interference with normal ventilation in adjacent areas, thus optimizing the resource allocation of the entire fire suppression network.

[0035] Therefore, the intelligent fire extinguishing system for the coal mine goaf 100 in this embodiment of the invention can capture subtle signs of an early fire (such as changes in temperature and gas composition) in real time and immediately drive the gas storage components and flow regulating valve 102 to respond, improving the success rate of early warning and initial fire suppression. Furthermore, through the delivery pipeline 101 and flow regulating valve 102, multiple independent fire extinguishing units 10 are interconnected to form an intelligent network capable of dynamic resource allocation, enhancing the fire extinguishing mechanism and the ability to cope with large-scale disasters of the entire mine fire extinguishing system, and ensuring the guarantee of fire extinguishing resources in extreme situations.

[0036] In some embodiments, when any one fire extinguishing unit 10 is in a fire environment, the control unit controls the remaining fire extinguishing units 10 that are not in a fire environment to distribute the inert gas stored in them proportionally. A portion of the gas is delivered to the fire extinguishing unit 10 in the fire environment for direct fire extinguishing, while the other portion is delivered to at least one other fire extinguishing unit 10 adjacent to the fire unit to pre-inertize the potential spread path of the fire.

[0037] It is understandable that, such as Figure 1 and Figure 2 As shown, taking three fire extinguishing units 10 as an example, the three fire extinguishing units 10 are sequentially divided into a first fire extinguishing unit 10a, a second fire extinguishing unit 10b, and a third fire extinguishing unit 10c. The first fire extinguishing unit 10a and the second fire extinguishing unit 10b are connected by a delivery pipeline 101, and the second fire extinguishing unit 10b and the third fire extinguishing unit 10c are connected by a delivery pipeline 101.

[0038] When a fire occurs in the goaf 100 corresponding to the first fire extinguishing unit 10a, or when the monitoring information from the monitoring unit indicates that the probability of a fire in the goaf 100 has increased, the gas storage component of the first fire extinguishing unit 10a is activated, and the flow rate of the inert gas in the gas storage component is adjusted by the control component to make the flow rate of the sprayed inert gas match the fire situation.

[0039] Simultaneously, based on the gas capacity in the gas storage component of the first fire extinguishing unit 10a, the second fire extinguishing unit 10b and the third fire extinguishing unit 10c, upon receiving the gas supply signal, supply at least half of the inert gas capacity in their own gas storage components to the first fire extinguishing unit 10a, ensuring that the first fire extinguishing unit 10a has sufficient inert gas for fire extinguishing. Furthermore, the gas capacity stored in the second fire extinguishing unit 10b and the third fire extinguishing unit 10c can be used to address fire situations in their corresponding goaf areas 100.

[0040] Preferably, the second fire extinguishing unit 10b can supply half of its own gas to the first fire extinguishing unit 10a, while the third fire extinguishing unit 10c is farther away from the first fire extinguishing unit 10a and the corresponding goaf 100 has a lower probability of fire. Therefore, it can supply 60% to 80% of its own volume of inert gas to the first fire extinguishing unit 10a.

[0041] In other words, based on the above-mentioned delivery principle, in a system consisting of more than three fire extinguishing units 10, when a fire occurs in the goaf 100 corresponding to one fire extinguishing unit 10, the remaining fire extinguishing units 10 can deliver an appropriate amount of inert gas to the fire extinguishing unit 10 in the fire environment according to their own distance from the fire extinguishing unit 10. This makes the entire mine's fire prevention and extinguishing system more efficient in responding to emergencies and ensures the resilience and damage resistance of the entire safety system in extreme situations.

[0042] In some embodiments, the intelligent fire extinguishing system for coal mine goaf 100 of the present invention further includes a gas replenishment unit 30, which is connected to at least one fire extinguishing unit 10 and is used to supply inert gas to the fire extinguishing unit 10 in a fire environment and / or the fire extinguishing unit 10 not in a fire environment.

[0043] It is understood that the gas replenishment unit 30 is connected to at least one fire extinguishing unit 10 via a pipeline. Preferably, the gas replenishment unit 30 is connected to a network of delivery pipelines 101 formed by connecting the various fire extinguishing units 10, so that inert gas can be delivered to the gas storage component of any one or more fire extinguishing units 10 that need gas replenishment through the network of delivery pipelines 101.

[0044] Preferably, the gas replenishment unit 30 is electrically connected to the control unit so that it can send instructions to the gas replenishment unit 30 based on the data received by all monitoring units, the fire situation, the gas storage capacity of each fire extinguishing unit 10, and the preset strategy.

[0045] It should be noted that the gas replenishment unit 30 can be installed underground in the mine or on the ground. Preferably, the gas replenishment unit 30 is installed on the ground, which facilitates the inspection and transportation of the stored gas. Furthermore, installing it on the ground can improve the gas supply replenishment capacity of the gas replenishment unit 30, that is, it can be allocated and replenished as soon as there is a gas shortage.

[0046] In some embodiments, the fire extinguishing nozzle 201 includes an air curtain nozzle 2011 and an atomizing nozzle 2012. When the fire extinguishing unit 10 is in a fire environment, the atomizing nozzle 2012 near the fire source sprays out atomized gas, and the fire extinguishing nozzle 201 adjacent to the atomizing nozzle 2012 sprays out air curtain-like gas from the air curtain nozzle 2011.

[0047] It is understandable that, such as Figure 1 and Figure 2 As shown, a single fire extinguishing nozzle 201 integrates two different types of nozzles in its physical structure: an atomizing nozzle 2012 and an air curtain nozzle 2011. These two types of nozzles can be integrated on a single nozzle body, or distributed on adjacent nozzles on the same fire extinguishing pipeline 20, but their functional modes can be switched independently.

[0048] In other words, both the atomizing nozzle 2012 and the air curtain nozzle 2011 originate from the same fire extinguishing pipeline 20. The pipeline carries a high-pressure inert gas (such as nitrogen) supplied by a gas storage unit. The control unit can independently adjust the gas pressure and flow rate leading to the atomizing nozzle 2012 and the air curtain nozzle 2011. For example, driving the atomizing nozzle 2012 may require higher pressure to achieve fine atomization, while driving the air curtain nozzle 2011 requires a larger flow rate to form a dense barrier.

[0049] Therefore, by combining the atomizing nozzle 2012 with the air curtain nozzle 2011, fire extinguishing resources (in atomized form) can be precisely applied to the fire point, while the air curtain is used to prevent the spread of the fire. This significantly improves the fire extinguishing efficiency per unit volume of inert gas, thereby significantly shortening the time from fire detection to complete extinguishment and improving fire extinguishing efficiency.

[0050] In some embodiments, the intelligent fire extinguishing system for a coal mine goaf 100 according to the present invention further includes an early warning unit. The early warning unit is electrically connected to the fire extinguishing unit 10 and is located within the goaf 100. The early warning unit is used to monitor the ventilation parameters, shape, and fire data of the goaf 100 and to simulate the potential fire spread path based on the data. If any fire extinguishing unit 10 is in a fire environment, the early warning unit is used to send an early warning signal to the fire extinguishing unit 10 that is not in a fire environment, so that the fire extinguishing unit 10 that is not in a fire environment can deliver gas to the fire extinguishing unit 10 that is in a fire environment.

[0051] Understandably, the early warning unit establishes a data connection directly or through control components with monitoring devices (sensors for temperature, CO concentration, etc.) distributed throughout the goaf area. The early warning unit can also interact with the mine's ventilation safety monitoring system and production scheduling system. For example, it can request the ventilation system to adjust local ventilation doors to coordinate with firefighting strategies; it can also send alarms to the production scheduling system, prompting evacuation or adjustments to production plans.

[0052] Furthermore, if the simulation by the early warning unit shows that the fire is mainly spreading along a certain fissure zone upwind, the system will prioritize mobilizing the fire extinguishing units 10 in that direction for pre-inertization and support. If the simulation shows that the gas storage capacity of a certain fire extinguishing unit 10 is insufficient to cope with the predicted fire scale, the early warning unit will activate the gas replenishment unit 30 in advance or dispatch resources from more distant and safer units to form an optimal resource allocation plan.

[0053] The following describes an intelligent fire extinguishing method for a coal mine goaf 100 according to an embodiment of the present invention.

[0054] The intelligent fire extinguishing method for a coal mine goaf 100 according to this embodiment of the invention is implemented using any of the intelligent fire extinguishing systems for a coal mine goaf 100 described in the above embodiments, and includes the following steps: The system acquires real-time monitoring information from multiple pre-set fire extinguishing units 10 within the goaf 100, including environmental parameters characterizing the fire status.

[0055] Understandably, monitoring components (such as temperature sensors, carbon monoxide sensors, oxygen sensors, etc.) can be used to continuously collect data and transmit the monitoring information back to the system's control components in real time via electrical signals, enabling early detection of hidden fire sources and buying time for firefighting operations.

[0056] Based on the monitoring information, the fire area is determined, and a fire extinguishing signal is sent to the fire extinguishing unit 10 located in the fire environment.

[0057] Understandably, after receiving the fused data, the control unit will accurately determine the specific location and extent of the fire area based on the source of the data (i.e., which fire extinguishing unit 10's sensor alarmed) and the severity of the data.

[0058] Once a fire is confirmed, the system will immediately send a fire extinguishing signal to the control unit of the fire extinguishing unit 10 in the area. This signal is a composite command containing multiple instructions: such as activating the gas storage component of this unit; controlling the control unit of this unit to open the valve and supply gas to the fire extinguishing pipeline 20 at a preset initial flow rate.

[0059] Control the remaining fire extinguishing units 10 that are not in a fire state, and distribute the prepared inert gas in a proportionate manner. A portion of the inert gas is delivered to the fire extinguishing units 10 in the fire environment for direct fire extinguishing, and another portion is delivered to non-fire areas adjacent to the fire area. The amount of inert gas delivered to the fire extinguishing units 10 in the fire environment is at least half of the total amount of prepared inert gas.

[0060] Understandably, upon confirming a fire, the control unit will immediately assess the severity of the fire and activate the cross-regional support mechanism. It will issue support commands to nearby fire suppression units 10 that are not currently on fire, enabling the remaining fire suppression units 10 to provide them with gas support.

[0061] In other words, by using one fire extinguishing unit 10 to directly extinguish the fire, while the other fire extinguishing units 10 replenish the gas, and by allocating the gas proportionally, the most critical direct fire extinguishing operation is ensured to obtain an overwhelming resource advantage, while no support forces are wasted, thus achieving the optimization of fire extinguishing resource utilization efficiency.

[0062] In some embodiments, the intelligent fire extinguishing method for coal mine goaf 100 of the present invention further includes the following steps: real-time monitoring of the inerting effect parameters of the fire area and its adjacent goaf 100 area, and dynamically adjusting the total flow rate and / or distribution ratio of inert gas according to the deviation between the inerting effect parameters and the preset target value.

[0063] Understandably, by precisely controlling the flow regulating valve 102 on each delivery pipeline 101, the volume of gas supplied to the fire extinguishing unit 10 in a fire environment can be adjusted. That is, if the fire in the fire zone is still raging, but the inerting effect of the adjacent isolation zone has reached the standard, the system will dynamically adjust the proportion, for example, diverting 70% or even 80% of the support gas to the fire zone to concentrate firefighting efforts. If monitoring data shows abnormal temperatures or increased carbon monoxide concentrations in adjacent areas, indicating a risk of fire breakthrough, the system will immediately increase the proportion of gas supplied to these areas, thereby reinforcing the isolation zone and preventing its spread.

[0064] In some embodiments, the intelligent fire extinguishing method for coal mine goaf 100 according to the present invention further includes the following steps: constructing a fire spread prediction model based on real-time ventilation parameters, goaf 100 morphological data and fire development trend.

[0065] Understandably, real-time ventilation parameters include wind speed, wind direction, wind pressure, and leakage air volume. This data comes from the mine's ventilation monitoring network. Building predictive models allows the system to move beyond simply relying on the current state for judgments, and instead extrapolate future trends based on physical laws, providing a scientific basis for subsequent decision-making.

[0066] The potential spread path of the fire is calculated using a predictive model. Understandably, the real-time data obtained in the first step is input into the pre-built predictive model to simulate the fire's development over a future period (e.g., the next 30 minutes to several hours), providing a reference for subsequent firefighting strategies.

[0067] One or more non-fire-prone areas located along potential spread paths will be identified as target areas for constructing inertization barriers.

[0068] Understandably, the early warning unit issues instructions to the fire extinguishing units 10 in these target areas. This instructs the control components of these units to begin injecting inert gas into their corresponding goaf areas 100, thereby rapidly reducing the oxygen concentration in those areas to a level where the fire cannot spread (e.g., below 12%), thus establishing an isolation zone and preventing the fire from spreading.

[0069] In some embodiments, the intelligent fire extinguishing method for coal mine goaf 100 of the present invention further includes the following steps: assessing the total inert gas reserves of all fire extinguishing units 10; when the total reserves are lower than the safety reserve threshold, activating the centralized gas replenishment unit 30 connected to the external gas source of the mine; and determining the priority and allocation scheme of gas replenishment based on the gas reserves of each fire extinguishing unit 10 and its distance from the fire source.

[0070] Understandably, each fire suppression unit 10's gas storage components (such as high-pressure gas tanks) are equipped with pressure sensors or level sensors to monitor their current gas reserves in real time. Gas replenishment priorities and allocation schemes include: units closest to the fire source with severely depleted reserves will be replenished at maximum flow rate to ensure continuous fire suppression or reinforcement of inerting barriers; units located on predicted potential spread paths but with adequate reserves will receive preventative replenishment to ensure sufficient resources to meet upcoming challenges and strengthen the defenses; units far from the fire zone that have consumed some gas in previous support operations will be replenished at lower or normal flow rates to restore them to standard reserve levels, preparing for future uncertainties.

[0071] In addition, under normal circumstances without fire alarms, the centralized gas replenishment unit 30 can also replenish each unit with small amounts of gas in turn according to the optimized scheme to make up for natural leakage, and take this opportunity to conduct pressure tests and health assessments on the entire delivery pipeline network 101, thereby improving the reliability of the system.

[0072] In some embodiments, the intelligent fire extinguishing method for a coal mine goaf 100 according to the present invention further includes the following steps: determining the area where the fire occurred, activating the corresponding fire extinguishing unit 10, and controlling at least one fire extinguishing nozzle 201 adjacent to the fire area to spray inert gas in atomization mode, and controlling other fire extinguishing nozzles 201 adjacent to the fire extinguishing nozzle 201 to spray inert gas in an air curtain mode to form a directional gas isolation barrier.

[0073] Understandably, based on the identified fire area, the corresponding fire extinguishing sprinkler 201 can be activated, spraying gas in a misting mode to ensure complete coverage of the fire area. Other fire extinguishing sprinklers 201 adjacent to the fire extinguishing sprinkler 201 within the fire area can be activated simultaneously, spraying inert gas in an air curtain mode to form a gas barrier with an isolating effect at at least one end of the fire area, thereby preventing the fire from spreading.

[0074] 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 are not intended to 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.

[0075] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0076] 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 connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0077] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0078] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0079] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An intelligent fire extinguishing system for coal mine goaf areas, characterized in that, include: The fire extinguishing unit includes a control component, a gas storage component, and a fire extinguishing branch circuit. The gas storage component is connected to the fire extinguishing branch circuit via the control component, and the gas storage component is used to store inert gas. The fire extinguishing branch includes a fire extinguishing pipeline, a monitoring component, and fire extinguishing nozzles. At least a portion of the fire extinguishing pipeline is located within the goaf area, and its extension direction is parallel to the extension direction of the goaf area. Both the monitoring component and the fire extinguishing nozzles are connected to the fire extinguishing pipeline. The monitoring component is electrically connected to the control component, which receives monitoring information transmitted by the monitoring component and controls the gas flow rate discharged from the gas storage component based on the monitoring information. The fire extinguishing unit comprises multiple units, each corresponding to one of the multiple goaf areas. Each fire extinguishing unit also includes a delivery pipeline, with one delivery pipeline connected to the fire extinguishing pipelines of two adjacent fire extinguishing units. The delivery pipeline has a flow regulating valve, which is electrically connected to the control component. When one of the fire extinguishing units is in a fire environment, the gas storage components in the remaining fire extinguishing units deliver at least half of the inert gas to the fire extinguishing unit in the fire environment through the delivery pipeline.

2. The intelligent fire extinguishing system for coal mine goaf areas according to claim 1, characterized in that, When any one of the fire extinguishing units is in a fire environment, the control unit controls the remaining fire extinguishing units not in a fire environment to distribute the inert gas stored in them proportionally. A portion of the gas is delivered to the fire extinguishing unit in the fire environment for direct fire extinguishing, while the other portion is delivered to at least one other fire extinguishing unit adjacent to the fire unit to pre-inertize the potential spread path of the fire.

3. The intelligent fire extinguishing system for coal mine goaf areas according to claim 1, characterized in that, It also includes a gas replenishment unit, which is connected to at least one of the fire extinguishing units and is used to supply inert gas to the fire extinguishing units that are in a fire environment and / or the fire extinguishing units that are not in a fire environment.

4. The intelligent fire extinguishing system for coal mine goaf areas according to claim 1, characterized in that, The fire extinguishing nozzle includes an air curtain nozzle and an atomizing nozzle. When the fire extinguishing unit is in a fire environment, the atomizing nozzle near the fire source sprays out atomized gas, and the fire extinguishing nozzle adjacent to the atomizing nozzle sprays out air curtain-like gas from the air curtain nozzle.

5. The intelligent fire extinguishing system for coal mine goaf areas according to any one of claims 1-4, characterized in that, It also includes an early warning unit, which is electrically connected to the fire extinguishing unit. The early warning unit is located in the goaf area and is used to monitor the ventilation parameters, morphology, and fire data of the goaf area. Based on the data, it simulates the potential fire spread path. If any of the fire extinguishing units is in a fire environment, the early warning unit is used to send an early warning signal to the fire extinguishing units that are not in a fire environment, so that the fire extinguishing units that are not in a fire environment can deliver gas to the fire extinguishing units that are in a fire environment.

6. A method for intelligent fire extinguishing in coal mine goaf areas, wherein the method is implemented using the intelligent fire extinguishing system for coal mine goaf areas as described in any one of claims 1-5, characterized in that, Includes the following steps: The system acquires real-time monitoring information from multiple pre-set fire extinguishing units within the goaf area, including environmental parameters characterizing the fire status. Based on the monitoring information, the fire area is determined, and a fire extinguishing signal is sent to the fire extinguishing unit in the fire environment; Control the remaining fire extinguishing units that are not in a fire state, and distribute the prepared inert gas in a proportionate manner. A portion of the inert gas is delivered to the fire extinguishing units in the fire environment for direct fire extinguishing, and another portion is delivered to non-fire areas adjacent to the fire area. The amount of inert gas delivered to the fire extinguishing units in the fire environment is at least half of the total amount of prepared inert gas.

7. The intelligent fire extinguishing method for coal mine goaf areas according to claim 6, characterized in that, It also includes the following steps: Real-time monitoring of inerting effect parameters in the fire area and its adjacent goaf area, and dynamic adjustment of the total flow rate and / or distribution ratio of the inerting gas based on the deviation between the inerting effect parameters and the preset target value.

8. The intelligent fire extinguishing method for coal mine goaf areas according to claim 6, characterized in that, It also includes the following steps: Based on real-time ventilation parameters, goaf morphology data, and fire development trends, a fire spread prediction model is constructed. The potential fire spread path is calculated using the prediction model. One or more non-fire areas located along the potential spread path are identified as target areas for constructing inertization barriers.

9. The intelligent fire extinguishing method for coal mine goaf areas according to claim 6, characterized in that, It also includes the following steps: Assess the total inert gas reserves of all fire extinguishing units. When the total reserves are lower than the safety reserve threshold, activate the centralized gas replenishment unit connected to the external gas source of the mine. Determine the priority and allocation scheme of gas replenishment based on the gas reserves of each fire extinguishing unit and its distance from the fire source.

10. The intelligent fire extinguishing method for coal mine goaf areas according to claim 6, characterized in that, It also includes the following steps: Once the area where the fire occurred is identified, the corresponding fire extinguishing unit is activated, and at least one fire extinguishing nozzle in the vicinity of the fire area is controlled to spray inert gas in atomization mode. Other fire extinguishing nozzles adjacent to the fire extinguishing nozzle are controlled to spray inert gas in air curtain mode, forming a directional gas isolation barrier.

Images