Fire extinguishing control system for a mine belt conveyor

Abstract

The utility model relates to the technical field of coal mine fire prevention, especially to a mine belt conveyor fire extinguishing control system. Including a plurality of mobile track cars that move along the extension direction of the belt conveyor, the mobile track car is arranged on the track assembly, the track assembly side is equipped with water supply pipeline, the water supply pipeline interval is equipped with the water outlet port, the mobile track car is equipped with the docking assembly that is adapted to the water outlet port, the monitoring assembly for monitoring the fire, the control assembly that controls the mobile track car action and the fire extinguishing injection assembly, the monitoring assembly and control assembly electricity are connected, the control assembly controls the mobile track car to move to the corresponding water outlet port according to the abnormal signal of monitoring assembly, opens the water outlet port through the docking assembly and makes the fire extinguishing injection assembly execute the fire extinguishing operation. Realized the real-time fire monitoring of the whole section of the belt conveyor, ensures that the fire extinguishing equipment reaches the ignition point quickly and accurately and reliably interfaces the water supply system.

Description

Technical Field

[0001] This utility model relates to the field of coal mine fire prevention technology, and in particular to a fire extinguishing control system for a mining belt conveyor. Background Technology

[0002] As a critical material transport equipment in mine production, the safe and stable operation of belt conveyors directly affects mine production efficiency and operational safety. During long-term, high-intensity operation, belt conveyors often face fire risks due to various factors. Prolonged friction between the conveyor belt and idlers leads to abnormal local temperature increases. Especially when idlers jam, or the conveyor belt slips or deviates, frictional heat accumulates rapidly, easily causing overheating of the conveyor belt and surrounding crushed coal. At the same time, conveyor belt tears and other malfunctions can cause material accumulation and friction, further aggravating heat accumulation. If these issues are not detected and addressed in time, they can easily develop into open flames and cause fire accidents. In existing technologies, fire extinguishing measures for belt conveyors mostly combine fixed fire extinguishing devices with manual inspections. Fixed fire extinguishing devices typically install sprinkler heads at key locations such as the head and tail of the conveyor, but their coverage area is fixed and difficult to deal with fires in the middle or random locations of the conveyor belt. Manual inspections are limited by the complexity of the mine environment and the inspection cycle, resulting in a lag in the detection of early fires, and it is difficult to quickly reach the fire point to implement effective control in the early stages of a fire.

[0003] Therefore, how to achieve real-time fire monitoring of the entire belt conveyor, ensure that fire extinguishing equipment can quickly and accurately reach the fire point and reliably connect to the water supply system, and at the same time take into account the coordination of automatic fire extinguishing and manual emergency operation, has become a key technical problem in solving the fire hazards of mining belt conveyors. Utility Model Content

[0004] To address the issue of real-time fire monitoring across the entire road section and ensure that fire extinguishing equipment can quickly and accurately reach the fire point and reliably connect to the water supply system, this utility model provides a fire extinguishing control system for a mining belt conveyor.

[0005] This utility model provides a fire extinguishing control system for a mining belt conveyor, comprising multiple mobile railcars that move along the extension direction of the belt conveyor. The mobile railcars are mounted on a track assembly, and a water supply pipeline is provided beside the track assembly. The water supply pipeline has water outlets spaced apart. Each mobile railcar is equipped with a docking component adapted to the water outlet, a monitoring component for monitoring the fire situation, a control component for controlling the movement of the mobile railcars, and a fire extinguishing spray component. The monitoring component and the control component are electrically connected. The control component controls the mobile railcars to move to the corresponding water outlets based on abnormal signals from the monitoring components, opens the water outlets through the docking components, and causes the fire extinguishing spray component to perform fire extinguishing operations. Furthermore, the track assembly forms an upward-protruding arc-shaped trigger section at the corresponding water outlet port. When the moving track vehicle moves along the track assembly to the arc-shaped trigger section, the docking assembly is raised along with the moving track vehicle and docks with the water outlet port to open the water outlet port. Furthermore, the docking assembly includes a docking joint disposed on the top of the mobile railcar. The docking joint is provided with a pushing member. The water outlet port is concave. A sealing member that can block the water outlet port is provided inside the water outlet port. When the docking joint is docked with the water outlet port, the pushing member pushes up the sealing member to open the water outlet port. Furthermore, the connector has an arc-shaped structure that adapts to the inner circumference of the water outlet port, the pusher protrudes from the middle of the inner side of the connector, and the inner side of the connector is also provided with a sealing element. The sealing element forms a sealing fit with the surface of the water supply pipeline. The water outlet port is connected to a limiting pipe in the water supply pipeline, and the sealing element is a heavy-duty sealing ball set in the limiting pipe. Furthermore, the monitoring component includes an environmental monitoring device mounted on a mobile railcar, and distributed temperature sensors are arranged along the extension direction of the belt conveyor. The distributed temperature sensors and the environmental monitoring device are electrically connected to the control component, respectively. Furthermore, the distributed temperature sensing device is a fiber optic temperature sensor, and the environmental monitoring device includes a smoke sensor and an infrared temperature sensor. Furthermore, the mobile railcar is provided with a traveling component at the contact position with the rail assembly. The traveling component includes a traveling wheel that contacts the horizontal surface of the rail assembly and a limiting wheel that contacts the vertical surface of the rail assembly. Cleaning components for removing debris from the surface of the rail assembly are provided in front of and behind the traveling wheel. Furthermore, the fire extinguishing spray assembly includes a multi-directional spray assembly disposed at the bottom of the mobile railcar. The multi-directional spray assembly is connected to the docking assembly through a water supply channel, and the water supply channel is equipped with a solenoid valve electrically connected to the control assembly. Furthermore, the mobile railcar is equipped with a storage chamber, which contains an extendable pipeline. One end of the extendable pipeline is connected to the water supply channel, and the other end can extend to the outside of the mobile railcar to form a manual operation port. Furthermore, the control component includes a signal processing unit and a drive unit. The signal processing unit receives signals from the monitoring component and sends instructions to the drive unit. The drive unit controls the movement of the mobile track vehicle and the opening and closing of the solenoid valve.

[0006] In summary, this utility model has the following beneficial technical effects: 1. This utility model proposes a fire extinguishing control system for a mining belt conveyor, which provides comprehensive fire monitoring and rapid response. By utilizing fiber optic temperature sensors arranged along the conveyor belt's extension direction, along with smoke sensors and infrared temperature sensors on a mobile railcar, a multi-dimensional monitoring network covering the entire conveyor belt is formed. This network can capture temperature anomalies and smoke signals in and around the conveyor belt in real time. Upon receiving signals, the control components can quickly drive the mobile platform towards the fire point, solving the problems of limited coverage and delayed manual inspections inherent in traditional fixed devices, and significantly improving the accuracy of early fire detection and location. 2. This utility model offers efficient fire extinguishing operation and a wide coverage area. The mobile railcar moves flexibly along the rail assembly via its walking components. Combined with the trigger section design on the rail assembly, the docking mechanism can precisely connect to the water outlet port of the water supply pipeline. The cooperation between the pushing component and the sealing component ensures reliable opening of the water outlet port, guaranteeing a stable water supply. Simultaneously, the multi-directional fire extinguishing spray component at the bottom of the mobile railcar covers the conveyor belt area in a radiating pattern, enabling all-around fire extinguishing. 3. This utility model combines automatic and manual emergency operation, adapting to complex working conditions. The system can achieve automatic monitoring, automatic movement, automatic docking, and automatic fire extinguishing throughout the entire process through control components, reducing manual intervention; while the extended pipelines in the mobile railcar can be deployed from the storage chamber, providing an operating interface for manual close-range fire extinguishing. Even in the event of a sudden failure of the automatic system or a complex fire situation, the fire extinguishing effect can still be guaranteed, improving the flexibility and reliability of mine fire response. Attached Figure Description Figure 1 This is a structural schematic diagram of the fire extinguishing control system of a mining belt conveyor according to an embodiment of the present invention, taken from a first angle.

[0007] Figure 2 This is an embodiment of the present utility model. Figure 1 A magnified view of a portion of the walking component.

[0008] Figure 3 This is a schematic diagram of the second angle structure of a fire extinguishing control system for a mining belt conveyor according to an embodiment of this utility model.

[0009] Figure 4 This is a structural schematic diagram of the fire extinguishing control system of a mining belt conveyor according to an embodiment of the present invention, taken from a third angle.

[0010] Figure 5 This is a schematic diagram of the docking component and water outlet port according to an embodiment of the present invention.

[0011] The components include: 1. Mobile railcar; 2. Docking assembly; 201. Connecting joint; 202. Pushing component; 203. Sealing component; 3. Monitoring assembly; 301. Smoke sensor; 302. Infrared temperature sensor; 4. Control assembly; 5. Fire extinguishing spray assembly; 501. Multi-directional spray assembly; 502. Water supply channel; 503. Solenoid valve; 6. Storage chamber; 601. Extension pipeline; 602. Manual operation port; 7. Walking assembly; 701. Walking wheel; 702. Limiting wheel; 703. Slag removal component; 8. Rail assembly; 801. Arc-shaped trigger section; 9. Water supply pipeline; 901. Water outlet port; 902. Limiting pipe; 903. Heavy-duty sealing ball. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to the accompanying drawings.

[0013] Example 1 Reference Figure 1 This embodiment of a fire extinguishing control system for a mining belt conveyor includes multiple mobile railcars 1 that move along the extension direction of the belt conveyor. The mobile railcars 1 are mounted on a track assembly 8. A water supply pipe 9 is provided on the side of the track assembly 8. The water supply pipe 9 is provided with water outlet ports 901 at intervals. The mobile railcars 1 are provided with docking components 2 adapted to the water outlet ports 901, a monitoring component 3 for monitoring the fire situation, a control component 4 for controlling the movement of the mobile railcars 1, and a fire extinguishing spray component 5. The monitoring component 3 is electrically connected to the control component 4. The control component 4 controls the mobile railcars 1 to move to the corresponding water outlet port 901 according to the abnormal signal of the monitoring component 3, and opens the water outlet port 901 through the docking component 2 and causes the fire extinguishing spray component 5 to perform fire extinguishing operation. Multiple mobile railcars 1 can cover the entire length of the conveyor belt in sections, and achieve coordinated monitoring and joint fire suppression through control component 4, avoiding monitoring blind spots caused by the failure of a single device. Water supply pipeline 9 is connected to the mine's main water supply system to ensure continuous water supply. Monitoring component 3 and control component 4 are connected using explosion-proof mining cables, which are suitable for the flammable and explosive environment of the mine.

[0014] Reference Figure 1 and Figure 4 The track assembly 8 forms an upward-protruding arc-shaped trigger section 801 at the position corresponding to the water outlet 901. When the moving track vehicle 1 moves along the track assembly 8 to the arc-shaped trigger section 801, the docking assembly 2 is raised along with the moving track vehicle 1 and docks with the water outlet 901 to open the water outlet 901. The curvature of the arc-shaped trigger section 801 is adapted to the movement trajectory of the moving track vehicle 1's traveling component 7, ensuring the smooth lifting of the docking component 2. The lifting height of the docking component 2 matches the installation height of the water outlet port 901, achieving precise alignment.

[0015] Reference Figure 5 The docking assembly 2 includes a docking connector 201 disposed on the top of the mobile railcar 1. The docking connector 201 is provided with a pushing member 202. The water outlet port 901 is concave. The water outlet port 901 is provided with a sealing member that can block the water outlet port 901. When the docking connector 201 is docked with the water outlet port 901, the pushing member 202 pushes up the sealing member to open the water outlet port 901. The end of the pusher 202 has a spherical structure to reduce wear when in contact with the sealing element. The concave curvature of the outlet port 901 complements the arc-shaped structure of the connector 201. The pushing stroke of the pusher 202 is just enough to completely disengage the sealing element from the sealing surface of the outlet port 901.

[0016] Reference Figure 5 The connector 201 has an arc-shaped structure that fits the inner circumference of the outlet port 901. The pusher 202 protrudes from the middle of the inner side of the connector 201. The inner side of the connector 201 is also provided with a sealing member 203. The sealing member 203 forms a sealing fit with the surface of the water supply pipe 9. The outlet port 901 is connected to a limiting tube 902 in the water supply pipe 9. The sealing member is a heavy-duty sealing ball 903 set in the limiting tube 902.

[0017] The seal 203 is a ring-shaped elastic structure and can be made of rubber. The sealing fit between the seal 203 and the surface of the water supply pipe 9 prevents water leakage during the connection process. The heavy-duty sealing ball 903 relies on its own weight to achieve a normally closed seal on the water outlet port 901, without the need for an additional locking structure.

[0018] The monitoring component 3 includes an environmental monitoring device mounted on the mobile railcar 1, and distributed temperature sensors are arranged along the extension direction of the belt conveyor. The distributed temperature sensors and the environmental monitoring device are electrically connected to the control component 4, respectively. Distributed temperature sensors are deployed uninterruptedly throughout the entire route via fiber optic splice boxes. The detection probes of the environmental monitoring devices face the surface of the conveyor belt and the area below it. The data transmission delay between the distributed temperature sensors, environmental monitoring devices, and control component 4 does not exceed 0.5 seconds, ensuring rapid response.

[0019] The distributed temperature sensing device is a fiber optic temperature sensor, and the environmental monitoring device includes a smoke sensor 301 and an infrared temperature sensor 302. Fiber optic temperature sensors achieve meter-level positioning accuracy, accurately identifying overheated areas. The smoke sensor 301 exhibits high sensitivity to characteristic smoke particles in mining environments. The infrared temperature sensor 302 can penetrate dusty environments to achieve non-contact temperature measurement.

[0020] Fiber optic temperature sensors are laid symmetrically and parallel to both sides of the conveyor belt, with a fixed bracket installed every 5 meters to prevent the fiber optics from shifting due to conveyor belt vibration. The detection probe of the environmental monitoring device is equipped with a dust cover, the surface of which is coated with an oleophobic coating to reduce the impact of mineral dust adhesion on detection accuracy.

[0021] Reference Figure 2 The mobile railcar 1 is provided with a walking component 7 at the contact position with the rail assembly 8. The walking component 7 includes a walking wheel 701 that contacts the horizontal surface of the rail assembly 8 and a limiting wheel 702 that contacts the vertical surface of the rail assembly 8. Cleaning parts 703 for removing debris from the surface of the rail assembly 8 are provided in front of and behind the walking wheel 701. The traveling wheels 701 have anti-slip textures on their surface to accommodate minor water accumulation on the track assembly 8. The limiting wheels 702 are arranged symmetrically in pairs to limit the lateral deviation of the moving track vehicle 1. The slag removal components 703 are elastic brush structures that can adaptively adjust the contact pressure according to the surface undulations of the track assembly 8. Slag removal components 703 are located at the front and rear of the traveling wheels 701 to remove debris from the surface of the track assembly 8, facilitating the cleaning of slag or ash on the track assembly 8.

[0022] Reference Figure 3 The fire extinguishing spray assembly 5 includes a multi-directional spray assembly 501 located at the bottom of the mobile railcar 1. The multi-directional spray assembly 501 is connected to the docking assembly 2 through a water supply channel 502. The water supply channel 502 is equipped with a solenoid valve 503 that is electrically connected to the control assembly 4. The nozzles of the multi-directional spray assembly 501 are circumferentially distributed, and the spray angle covers the width of the conveyor belt. The water supply channel 502 is a pressure-resistant hose. The solenoid valve 503 is explosion-proof, ensuring rapid flow control.

[0023] Reference Figure 4 The mobile railcar 1 is provided with a storage chamber 6, and the storage chamber 6 is provided with an extendable extension pipe 601. One end of the extension pipe 601 is connected to the water conveyance channel 502, and the other end can extend to the outside of the mobile railcar 1 to form a manual operation port 602. The inner wall of the storage chamber 6 is provided with a guide groove to facilitate the storage and deployment of the extension pipe 601. Normally, it is coiled and stored within the storage chamber 6 inside the mobile railcar 1. The end of the extension pipe 601 is equipped with a quick-connect interface for connecting a handheld spray nozzle. The manual operation port 602 is equipped with a manual valve for easy control of the water flow.

[0024] The control component 4 includes a signal processing unit and a drive unit. The signal processing unit receives signals from the monitoring component 3 and sends instructions to the drive unit. The drive unit controls the movement of the mobile railcar 1 and the opening and closing of the solenoid valve 503.

[0025] Multiple mobile railcars 1 can exchange information through wireless communication modules, share location and monitoring data in real time, and when a railcar detects a fire, it can send a coordination request to adjacent railcars to form regional joint defense and improve fire-fighting response efficiency.

[0026] Workflow: During the monitoring phase, the distributed temperature sensors monitor the temperature of the entire conveyor belt in real time, while the environmental monitoring devices simultaneously detect the smoke concentration and infrared radiation intensity around the mobile railcar 1. The monitoring data is continuously transmitted to the signal processing unit of the control component 4. During the abnormal response phase, when the signal processing unit determines that the monitoring data exceeds the threshold, it immediately locates the abnormal area and sends a command to the mobile railcar 1 in the corresponding area. The drive unit starts the walking component 7 and controls the mobile railcar 1 to move along the track component 8 to the abnormal area. During the docking phase, the mobile railcar 1 arrives at the water outlet 901 corresponding to the abnormal area, lifts along the arc-shaped trigger section 801 and aligns the docking component 2 with the water outlet 901, the pusher 202 lifts the heavy-duty sealing ball 903 to open the water outlet 901, the sealing component 203 forms a sealing fit, and at the same time the control component 4 opens the solenoid valve 503 of the water delivery channel 502. During the fire extinguishing phase, water flows through docking component 2 and water supply channel 502 into multi-directional spray component 501 to spray fire extinguishing in abnormal areas. If the automatic fire extinguishing effect is not good, when personnel arrive, they can open the storage chamber 6 of the mobile railcar 1, take out the extension pipe 601 and connect it to the handheld nozzle, and open the manual valve to carry out directional fire extinguishing. During the reset phase, after the fire is extinguished, the control component 4 closes the solenoid valve 503, the mobile railcar 1 moves away along the arc-shaped trigger section 801, and the heavy-duty sealing ball 903 falls back under the action of gravity to seal the water outlet port 901, and the equipment returns to the initial monitoring position. The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A fire extinguishing control system for a mining belt conveyor, characterized in that, The system includes multiple mobile railcars (1) that move along the extension direction of a belt conveyor. The mobile railcars (1) are mounted on a rail assembly (8). A water supply pipeline (9) is provided on the side of the rail assembly (8). The water supply pipeline (9) is provided with water outlet ports (901) at intervals. The mobile railcars (1) are provided with docking components (2) adapted to the water outlet ports (901), a monitoring component (3) for monitoring the fire situation, a control component (4) for controlling the movement of the mobile railcars (1), and a fire extinguishing spray component (5). The monitoring component (3) is electrically connected to the control component (4). The control component (4) controls the mobile railcars (1) to move to the corresponding water outlet port (901) according to the abnormal signal of the monitoring component (3), opens the water outlet port (901) through the docking component (2), and causes the fire extinguishing spray component (5) to perform fire extinguishing operation. The control component (4) includes a signal processing unit and a drive unit. The signal processing unit receives signals from the monitoring component (3) and sends instructions to the drive unit. The drive unit controls the movement of the mobile railcar (1) and the opening and closing of the solenoid valve (503).

2. The fire extinguishing control system for a mining belt conveyor according to claim 1, characterized in that, The track assembly (8) forms an upward-protruding arc-shaped trigger section (801) at the position corresponding to the water outlet (901). When the moving track vehicle (1) moves along the track assembly (8) to the arc-shaped trigger section (801), the docking assembly (2) is raised along with the moving track vehicle (1) and docks with the water outlet (901) to open the water outlet (901).

3. The fire extinguishing control system for a mining belt conveyor according to claim 2, characterized in that, The docking assembly (2) includes a docking connector (201) disposed on the top of the mobile railcar (1). The docking connector (201) is provided with a pusher (202). The water outlet port (901) is concave. The water outlet port (901) is provided with a sealing member that can block the water outlet port (901). When the docking connector (201) docks with the water outlet port (901), the pusher (202) pushes up the sealing member to open the water outlet port (901).

4. The fire extinguishing control system for a mining belt conveyor according to claim 3, characterized in that, The connector (201) has an arc-shaped structure that fits the inner circumference of the outlet port (901). The pusher (202) protrudes from the middle of the inner side of the connector (201). The inner side of the connector (201) is also provided with a sealing element (203). The sealing element (203) forms a sealing fit with the surface of the water supply pipeline (9). The outlet port (901) is connected to a limiting tube (902) in the water supply pipeline (9). The sealing element is a heavy-duty sealing ball (903) set in the limiting tube (902).

5. The fire extinguishing control system for a mining belt conveyor according to claim 1, characterized in that, The monitoring component (3) includes an environmental monitoring device installed on the mobile railcar (1), and a distributed temperature sensor is arranged in the extension direction of the belt conveyor. The distributed temperature sensor and the environmental monitoring device are electrically connected to the control component (4).

6. The fire extinguishing control system for a mining belt conveyor according to claim 5, characterized in that, The distributed temperature sensing device is a fiber optic temperature sensor, and the environmental monitoring device includes a smoke sensor (301) and an infrared temperature sensor (302).

7. The fire extinguishing control system for a mining belt conveyor according to claim 1, characterized in that, The mobile railcar (1) is provided with a walking component (7) at the contact position with the rail assembly (8). The walking component (7) includes a walking wheel (701) that contacts the horizontal surface of the rail assembly (8) and a limiting wheel (702) that contacts the vertical surface of the rail assembly (8). The walking wheel (701) is provided with a cleaning component (703) for removing debris from the surface of the rail assembly (8) in front of and behind it.

8. The fire extinguishing control system for a mining belt conveyor according to claim 1, characterized in that, The fire extinguishing spray assembly (5) includes a multi-directional spray assembly (501) located at the bottom of the mobile railcar (1). The multi-directional spray assembly (501) is connected to the docking assembly (2) through a water supply channel (502). The water supply channel (502) is equipped with a solenoid valve (503) that is electrically connected to the control assembly (4).

9. The fire extinguishing control system for a mining belt conveyor according to claim 8, characterized in that, The mobile railcar (1) is provided with a storage chamber (6), and the storage chamber (6) is provided with an extendable extension pipe (601). One end of the extension pipe (601) is connected to the water conveyance channel (502), and the other end can extend to the outside of the mobile railcar (1) to form a manual operation port (602).

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