Mine area pipe gallery automatic fire extinguishing system and fire extinguishing method

Abstract

A mine area pipe gallery automatic fire extinguishing system and a fire extinguishing method, the fire extinguishing system comprising a control center and an automatic fire extinguishing device, the mine area pipe gallery being divided into a plurality of fire control units connected in a head-to-tail manner, a fire detector being arranged in each fire control unit, the control center acquiring fire detector signals of the fire control units, and giving an instruction to the corresponding automatic fire extinguishing device to extinguish fire when fire extinguishing is needed, the automatic fire extinguishing device comprising a fixed fire extinguishing device and a mobile fire extinguishing device, and the fire extinguishing method being based on the fire extinguishing system. The fire extinguishing system and the fire extinguishing method ensure the effectiveness of the mine area fire extinguishing system by providing the fixed fire extinguishing device and the mobile fire extinguishing device, and the mobile fire extinguishing device is remotely controlled by the high-pressure water drive.

Description

Technical Field

[0001] This invention relates to the field of fire protection technology for utility tunnels, specifically to an automatic fire extinguishing system and method for utility tunnels in mining areas. Background Technology

[0002] Production safety is a crucial guarantee for the sustained, stable, and healthy development of industry, and safe production is increasingly demonstrating its importance and role in national development. Safety is the top priority in mining operations, playing a guaranteeing, supporting, and driving role in production and construction. Mining utility tunnels, which are tunnel spaces constructed within mining areas, integrate various essential pipelines and transmission lines for mining operations, such as power, communication, water supply and drainage, and transportation. They are equipped with dedicated maintenance ports, hoisting ports, and monitoring systems, and are subject to unified planning, design, construction, and management. They are vital infrastructure and a "lifeline" for ensuring the operation of mining areas. Most mining areas in my country have harsh production conditions and various hazards. A fire in a mining utility tunnel can cause enormous property damage and may even trigger a serious safety accident.

[0003] Therefore, comprehensive fire protection planning for the mining area's utility tunnel system is particularly important. Fire extinguishing systems within the utility tunnel can be categorized into water-based systems and dry powder systems based on the properties of the extinguishing agent. In dry powder systems, because the ultrafine dry powder is released only once, it cannot extinguish reignited fires, resulting in limited extinguishing performance.

[0004] The fire extinguishing effectiveness is relatively low. High-pressure water mist fire extinguishing systems, due to their superior fire extinguishing effect, have been applied to various pipe gallery fire protection systems. To ensure fire extinguishing effectiveness at all locations within the entire mining pipe gallery, high-pressure water mist fire extinguishing devices are intermittently installed. However, due to the vast size of the mining pipe gallery system, a large number of high-pressure water mist fire extinguishing devices are required to fully cover the entire area. These devices themselves are expensive, resulting in high investment costs and hindering economic efficiency. Furthermore, to guarantee 100% effectiveness of the mining fire protection system, a systematic arrangement of the fire protection layout is necessary to prevent the spread of fire due to unexpected failure of the high-pressure water mist fire extinguishing devices. Therefore, designing a rationally arranged mining pipe gallery fire protection system is of paramount importance. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an automatic fire extinguishing system and method for mine pipe corridors. This system and method, in addition to providing fixed fire extinguishing devices, ensures the effectiveness of the mine fire protection system by installing mobile fire extinguishing devices. The high-pressure water-driven mobile fire extinguishing devices enable remote control of these devices.

[0006] The technical solution of the present invention is as follows:

[0007] An automatic fire extinguishing system for a mining area utility tunnel includes a control center and automatic fire extinguishing devices. The mining area utility tunnel is divided into several fire control units connected end to end. Each fire control unit is equipped with a fire detector. The control center obtains the fire detector signals from each fire control unit and sends instructions to the corresponding automatic fire extinguishing devices when fire extinguishing is required. The automatic fire extinguishing devices include fixed fire extinguishing devices and mobile fire extinguishing devices.

[0008] Each fire control unit is equipped with at least one fixed fire extinguishing device, which includes a fixed fine water mist nozzle and a high-pressure water system;

[0009] A mobile fire extinguishing device is installed in the mining area's utility tunnel. The mobile fire extinguishing device includes a base, a high-pressure water system, a mobile fine water mist nozzle assembly, and a travel track. The mobile fine water mist nozzle assembly is driven by the high-pressure water system and supplied with water to the nozzles. The travel track is set inside the mining area's utility tunnel, allowing the mobile fine water mist nozzle assembly to move along the track in the front-to-back direction. The base is fixedly installed inside the mining area's utility tunnel and serves as a transfer station for the high-pressure water system and the mobile fine water mist nozzle assembly.

[0010] The mobile fire extinguishing equipment can cover the entire mining area's utility tunnel.

[0011] Furthermore, N mobile fire extinguishing devices are evenly distributed within the mine area's pipe gallery. The total length of the mine area's pipe gallery is L, and the travel range of the mobile fire extinguishing devices is M. M should satisfy the following relationship: M≥S×[L / (N+1)], where S is the safety factor, and the value of S ranges from 1 to 10.

[0012] Furthermore, the high-pressure water system is a high-pressure pump set, which is connected to fire water pipelines and power lines. A control valve set is installed on the high-pressure pump set, and the control valve set is communicatively connected to the control center.

[0013] Furthermore, the base includes a base body, a tube disc, and an interface seat.

[0014] The tube coil consists of a coil body and two end coil shafts. The coil body includes a coiled cylinder and baffles on both sides. The coil shafts are rotatably mounted in the base. A high-pressure water channel is provided inside the coil. One end of the hose connector in the high-pressure hose assembly is sealed to the interface of the high-pressure water channel on the coiled cylinder. After the end of the high-pressure hose assembly is fixed on the coiled cylinder, it is wound around the coiled cylinder several times and then passes through the hose inlet and outlet at the bottom of the base. The other end of the hose connector in the high-pressure hose assembly is sealed outside the base and sealed to the vehicle body of the traveling fine water mist nozzle assembly. Two rotating wheels are provided above the hose inlet and outlet at the bottom of the base, and the two rotating wheels are respectively located on both sides of the high-pressure hose assembly.

[0015] The coil is equipped with a drive device, which includes a coil motor and a coupling. One end of the two coil shafts passes through the side of the base and is connected to the output shaft of the coil motor through the coupling.

[0016] The tube disk is equipped with a rotation signal generating device, which includes an encoder, a signal generating passive gear, and a signal generating active gear. The signal generating active gear is fixedly connected to one end of one of the two disk shafts. The signal generating passive gear meshes with the signal generating active gear. The encoder is connected to the central shaft of the signal generating passive gear and is communicatively connected to the control center.

[0017] The other end of the two disc shafts passes through the side of the base body and is rotatably and sealed into the interface seat fixed on the outer side of the base body. The interface seat is provided with a high-pressure water channel that connects the end of the interface seat and the annular cavity on the wall of the disc shaft insertion hole. The high-pressure water channel of the disc shaft is connected to the annular cavity, and the end of the interface seat is connected to the high-pressure water system.

[0018] Furthermore, the walking track is fixedly installed on the ground of the mining area pipe gallery, with two circular cross-section monorails arranged in parallel.

[0019] Furthermore, the mobile fine water mist nozzle assembly includes a vehicle body and a mobile fine water mist nozzle. The mobile fine water mist nozzle is fixed on the vehicle body and connected to one end of the high-pressure water channel on the vehicle body. A wheel is rotatably installed on the lower part of the vehicle body. The shape of the wheel matches the travel track. A wheel drive device is installed on the vehicle body.

[0020] Furthermore, the wheel drive device includes a water motor, a drive main gear, and a gear wheel axle. The two ends of the gear wheel axle are fixedly connected to the wheel. The drive main gear meshes with the gear on the gear wheel axle. The output shaft of the water motor is connected to the central shaft of the drive main gear. The water motor is connected to the high-pressure water channel on the vehicle body.

[0021] Furthermore, a locking device is provided between the hose connector in the high-pressure hose assembly and the vehicle body. The locking device includes a cover plate, a clamping ring, and a combined locking sleeve. The clamping ring is rotatably connected to the interface of the vehicle body through the cover plate. The upper part of the clamping ring is provided with a through slot, and a blind slot is provided vertically at the bottom of the through slot. A platform that mates with the through slot and the blind slot is provided at the bottom of the outer periphery of the combined locking sleeve. A movable pressure plate is provided in the inner cavity of the combined locking sleeve. The movable pressure plate is connected to the top of the inner cavity of the combined locking sleeve through a compression spring.

[0022] An automatic fire extinguishing method for mining area pipe gallery involves setting up an automatic fire extinguishing system for the mining area pipe gallery, including a control center and automatic fire extinguishing devices. The mining area pipe gallery is divided into several fire control units connected end to end. Each fire control unit is equipped with a fire detector. The control center obtains the fire detector signals from each fire control unit and sends instructions to the corresponding automatic fire extinguishing devices to extinguish the fire when fire extinguishing is required.

[0023] The automatic fire extinguishing system includes fixed fire extinguishing devices and mobile fire extinguishing devices. At least one fixed fire extinguishing device is installed in each fire control unit, comprising a fixed fine water mist nozzle and a high-pressure water system. A mobile fire extinguishing device is installed within the mine's utility tunnel. This mobile fire extinguishing device includes a base, a high-pressure water system, a mobile fine water mist nozzle assembly, and a travel track. The mobile fine water mist nozzle assembly is powered by the high-pressure water system and supplied with water. The travel track is located within the mine's utility tunnel, allowing the mobile fine water mist nozzle assembly to move along the track in both forward and backward directions. The base is fixedly installed within the mine's utility tunnel and serves as a transfer station for the high-pressure water system and the mobile fine water mist nozzle assembly. The mobile fire extinguishing device's range can cover the entire mine's utility tunnel.

[0024] The method for setting the travel range of the mobile fire extinguishing device is as follows: N mobile fire extinguishing devices are evenly distributed in the mine area pipe gallery. The total length of the mine area pipe gallery is L, and the travel range of the mobile fire extinguishing device is M. M should satisfy the following relationship: M≥S×[L / (N+1)], where S is the safety factor and the value of S is 1-10.

[0025] The fixed high-pressure water system is a high-pressure pump set, which is connected to fire water pipelines and power lines. A control valve set is installed on the high-pressure pump set, and the control valve set is communicatively connected to the control center.

[0026] The base includes a base body, a tube disc, and an interface seat.

[0027] The tube coil consists of a coil body and two end coil shafts. The coil body includes a coiled cylinder and baffles on both sides. The coil shafts are rotatably mounted in the base. A high-pressure water channel is provided inside the coil. One end of the hose connector in the high-pressure hose assembly is sealed to the interface of the high-pressure water channel on the coiled cylinder. After the end of the high-pressure hose assembly is fixed on the coiled cylinder, it is wound around the coiled cylinder several times and then passes through the hose inlet and outlet at the bottom of the base. The other end of the hose connector in the high-pressure hose assembly is sealed outside the base and sealed to the vehicle body of the traveling fine water mist nozzle assembly. Two rotating wheels are provided above the hose inlet and outlet at the bottom of the base, and the two rotating wheels are respectively located on both sides of the high-pressure hose assembly.

[0028] The coil is equipped with a drive device, which includes a coil motor and a coupling. One end of the two coil shafts passes through the side of the base and is connected to the output shaft of the coil motor through the coupling.

[0029] The tube disk is equipped with a rotation signal generating device, which includes an encoder, a signal generating passive gear, and a signal generating active gear. The signal generating active gear is fixedly connected to one end of one of the two disk shafts. The signal generating passive gear meshes with the signal generating active gear. The encoder is connected to the central shaft of the signal generating passive gear and is communicatively connected to the control center.

[0030] The other end of the two disc shafts passes through the side of the base body and is rotatably and sealed into the interface seat fixed on the outer side of the base body. The interface seat is provided with a high-pressure water channel that connects the end of the interface seat and the annular cavity on the wall of the disc shaft insertion hole. The high-pressure water channel of the disc shaft is connected to the annular cavity, and the end of the interface seat is connected to the high-pressure water system.

[0031] The walking track is fixedly installed on the ground of the mining area pipe gallery, with two circular cross-section monorails arranged in parallel.

[0032] The walking fine water mist nozzle assembly includes a vehicle body and a walking fine water mist nozzle. The walking fine water mist nozzle is fixed on the vehicle body and connected to one end of the high-pressure water channel on the vehicle body. A wheel is rotatably installed on the lower part of the vehicle body. The shape of the wheel matches the walking track. A wheel drive device is installed on the vehicle body.

[0033] The wheel drive device includes a water motor, a drive main gear, and a gear wheel axle. The two ends of the gear wheel axle are fixedly connected to the wheel. The drive main gear meshes with the gear on the gear wheel axle. The output shaft of the water motor is connected to the central shaft of the drive main gear. The water motor is connected to the high-pressure water channel on the vehicle body.

[0034] The fire extinguishing method of the automatic fire extinguishing system for the mining area pipe gallery is as follows:

[0035] When the control center receives fire information from a fire detector in a fire control unit, it classifies the fire information according to the fire level determination program preset by the control center. The control center also presets the correspondence between fire level and activation of fixed fire extinguishing devices and mobile fire extinguishing devices.

[0036] When the initial fire level only requires the activation of the fixed fire extinguishing device of the fire control unit where the fire occurred, the control center activates the high-pressure pump unit of the fixed fire extinguishing device to provide high-pressure water to the fixed fine water mist nozzles for fire extinguishing. If the fire is not extinguished within the time set by the control center, the control center activates the adjacent mobile fire extinguishing device and controls the mobile fire extinguishing device to move to the fire control unit for fire extinguishing. If the fire is still not extinguished within the time set by the control center, the control center activates the next adjacent mobile fire extinguishing device and controls the mobile fire extinguishing device to move to the fire control unit for fire extinguishing. This continues until the next adjacent mobile fire extinguishing device can no longer move to the fire control unit. At this point, the control center determines that the fire level exceeds the limit of the automatic fire extinguishing system and notifies the mine firefighters to provide manual fire extinguishing support.

[0037] When the initial fire level requires the simultaneous activation of both fixed and mobile fire suppression systems, the control center activates the high-pressure pump unit of the fixed fire suppression system to provide high-pressure water to the fixed fine water mist nozzles for fire suppression. At the same time, based on the initial fire level, the control center activates the adjacent mobile fire suppression system and moves it to the fire control unit to extinguish the fire. If the fire is not extinguished within the time set by the control center, the control center activates the next adjacent mobile fire suppression system and moves it to the fire control unit to extinguish the fire. This continues until the next adjacent mobile fire suppression system can no longer move to the fire control unit. At this point, the control center determines that the fire level exceeds the limit of the automatic fire suppression system and notifies the mine fire department to provide manual fire suppression support.

[0038] When the initial fire level exceeds the limit of the automatic fire suppression system, notify the mine firefighters to provide manual fire suppression support.

[0039] The method of using the mobile fire extinguishing device is as follows: Start the high-pressure pump set of the mobile fire extinguishing device. The high-pressure pump set drives the water motor to rotate. The water motor drives the wheels to move on the track. At the same time, start the coil motor to make the coil rotate. The high-pressure hose assembly around the coil moves with the vehicle body. When the vehicle body reaches the fire extinguishing location, stop driving the water motor. The high-pressure valve group supplies water to the moving fine water mist nozzles for fire extinguishing. After the fire is extinguished, stop supplying water to the moving fine water mist nozzles. Reverse the water motor and coil motor to retract the high-pressure hose assembly and move the moving fine water mist nozzle assembly to the base.

[0040] The distance the vehicle body moves is determined by the rotation signal generator on the tube disc.

[0041] Furthermore, the hose connector in the high-pressure hose assembly is locked to the vehicle body interface by a locking device. The locking device includes a cover plate, a clamping ring, and a combined locking sleeve. The clamping ring is rotatably connected to the vehicle body interface via the cover plate. The upper part of the clamping ring is provided with a through slot, and a blind slot is provided vertically at the bottom of the through slot. A platform that mates with the through slot and the blind slot is provided at the bottom of the outer periphery of the combined locking sleeve. A movable pressure plate is provided in the inner cavity of the combined locking sleeve, and the movable pressure plate is connected to the top of the inner cavity of the combined locking sleeve by a compression spring.

[0042] The locking steps are as follows:

[0043] a. Connect the hose connector in the high-pressure hose assembly to the vehicle body interface;

[0044] b. Insert the left and right halves of the combined locking sleeve together and put the hose into the combined locking sleeve;

[0045] c. Insert the lower part of the combination locking sleeve into the through slot of the clamping ring, and press the combination locking sleeve down until the upper surface of the slot is lower than the lower surface of the through slot.

[0046] d. Rotate the clamping ring 90°;

[0047] e. Loosen the combination locking sleeve, and the slotted plate will be pressed into the blind slotted plate under the elastic action of the compression spring.

[0048] The beneficial effects of this invention are as follows:

[0049] This invention discloses an automatic fire extinguishing system and method for mining area pipe corridors. In addition to providing fixed fire extinguishing devices, the system and method ensure the effectiveness of the mining area fire protection system by setting up mobile fire extinguishing devices. The mobile fire extinguishing devices are remotely controlled by setting up high-pressure water-driven mobile fire extinguishing devices.

[0050] This invention discloses an automatic fire extinguishing system and method for mining pipe corridors. The fire extinguishing system and method ensure a stable connection at the connection point by setting a locking device at the high-pressure pipe joint and interface, effectively avoiding the failure of the entire mobile fire extinguishing device due to interface failure. Attached Figure Description

[0051] The solutions and advantages of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

[0052] In the attached diagram:

[0053] Figure 1 This is a schematic diagram of the composition of an automatic fire extinguishing system for a mining area pipe gallery according to the present invention;

[0054] Figure 2 This is a schematic diagram of the components of a fixed fire extinguishing system;

[0055] Figure 3 This is a schematic diagram of the components of a mobile fire extinguishing system;

[0056] Figure 4 This is a schematic diagram of a mobile fire extinguishing system.

[0057] Figure 5 This is a schematic diagram of the high-pressure water channel structure from the high-pressure water system to the base in a mobile fire extinguishing device.

[0058] Figure 6 A schematic diagram of the structure of the vehicle body and the track of a mobile fire extinguishing device;

[0059] Figure 7 This is a schematic diagram of the connection between the vehicle body and the high-pressure hose assembly of a mobile fire extinguishing device.

[0060] Figure 8 This is a schematic diagram of the clamping ring structure;

[0061] Figure 9 for Figure 8 Sectional view of AA;

[0062] Figure 10 This is a schematic diagram of the combined locking sleeve.

[0063] Figure 11 for Figure 10 BB section view;

[0064] The components represented by the various reference numerals in the diagram are:

[0065] This invention comprises: 1. Base; 1a. Base body; 1a1. Hose inlet and outlet; 1b. Tube disc; 1b1. Disc high-pressure water channel; 1c. Rotary wheel; 1d. Interface seat; 1d1. Base high-pressure water channel; 1d11. Annular cavity; 2. High-pressure water system; 3. Traveling fine water mist nozzle assembly; 3a. Vehicle body; 3a1. Vehicle body high-pressure water channel; 3b. Traveling fine water mist nozzle; 4. Traveling track; 5. High-pressure hose assembly; 6. Sealing ring; 7. Coil motor; 8. Coupling; 10. Encoder; 11. Signal generation passive gear; 12. Signal generation active gear; 13. Hydraulic motor; 14. 15. Drive main gear, 16. Gear wheel axle, 17. Wheel, 18. Cover plate, 19. Pressure ring, 18a. Lower through hole, 18b. Hollow ring groove, 18c. Through slot, 18d. Blind slot, 18e. Upper through hole, 19. Combined locking sleeve, 19a. Left half sleeve, 19a1. Pressing edge, 19a2. Left slotted platform, 19a3. T-shaped platform, 19a4. Left movable pressure plate, 19a5. Left compression spring, 19b. Right half sleeve, 19b1. Notch, 19b2. Right slotted platform, 19b3. T-shaped groove, 19b4. Right movable pressure plate, 19b5. Right compression spring. Detailed Implementation

[0066] like Figure 1 As shown, an automatic fire extinguishing system for a mining area utility tunnel includes a control center and automatic fire extinguishing devices. The mining area utility tunnel is divided into several interconnected fire control units. Each fire control unit is equipped with a fire detector. Specifically, the fire detector may include an infrared thermometer and a visible light video acquisition device. The control center acquires the signals from the fire detectors of each fire control unit and sends instructions to the corresponding automatic fire extinguishing devices when fire extinguishing is required. The automatic fire extinguishing devices include fixed fire extinguishing devices and mobile fire extinguishing devices.

[0067] Each fire control unit is equipped with at least one fixed fire extinguishing device, such as Figure 2 As shown, the fixed fire extinguishing device includes a fixed fine water mist nozzle and a high-pressure water system. The fixed fine water mist nozzle is connected to the high-pressure water system through a high-pressure water pipe. In one specific embodiment, the high-pressure water system is connected to the fire water pipe of the mine area pipe gallery.

[0068] Motorized fire extinguishing devices are installed in the mine's utility tunnels, such as... Figure 3 As shown, the mobile fire extinguishing device includes a base, a high-pressure water system, a mobile fine water mist nozzle assembly, and a travel track. The mobile fine water mist nozzle assembly is powered by the high-pressure water system and supplied with water to the nozzles. The travel track is set inside the mine's pipe gallery, allowing the mobile fine water mist nozzle assembly to move along the track in both forward and backward directions. The base is fixedly set inside the mine's pipe gallery and serves as a transfer station for the high-pressure water system and the mobile fine water mist nozzle assembly. The mobile fire extinguishing device's travel range can cover the entire mine's pipe gallery.

[0069] Furthermore, N mobile fire extinguishing devices are evenly distributed within the mine area's pipe gallery. The total length of the mine area's pipe gallery is L, and the travel range of the mobile fire extinguishing devices is M. M should satisfy the following relationship: M≥S×[L / (N+1)], where S is the safety factor, and the value of S ranges from 1 to 10. The larger the value of S, the stronger the ultimate fire extinguishing capability of the fire extinguishing system.

[0070] In one specific embodiment, the high-pressure water system is a high-pressure pump set, which is connected to fire water pipelines and power lines. A control valve set is installed on the high-pressure pump set, and the control valve set is communicatively connected to the control center.

[0071] In one specific embodiment, the high-pressure water pump set supplying water to the mobile fire extinguishing device is connected to fire-fighting pipelines and power lines that are independently installed outside the mine area's pipe gallery, so that the water supply will not be interrupted due to the fire when a fire occurs inside the pipe gallery.

[0072] like Figure 4 As shown, the base 1 includes a base body 1a, a tube disc 1b, and an interface seat 1d.

[0073] like Figure 5 As shown, the tube coil 1b consists of a coil body and coil shafts at both ends. The coil body includes a cylindrical body surrounding the tube and baffles on both sides. The coil shafts are rotatably mounted in the base 1a via bearings or other means. A high-pressure water channel 1b1 is provided inside the tube coil 1b. In one specific embodiment, three high-pressure water channels 1b1 are provided, one for supplying high-pressure water to the water-driven motor 13, the other for returning water, and the third for supplying high-pressure water to the traveling fine water mist nozzle 3b. One end of the hose connector in the high-pressure hose assembly 5 is sealed and connected to the high-pressure water channel 1b1. At the interface on the tube cylinder, the end of the high-pressure hose assembly 5 is fixed to the tube cylinder and then wound around the tube cylinder several times before passing through the hose inlet / outlet 1a1 at the bottom of the seat body 1a. The other end of the hose connector in the high-pressure hose assembly 5 is sealed outside the seat body 1a and sealed to the vehicle body 3a of the walking fine water mist nozzle assembly 3. Correspondingly, the high-pressure hose assembly 5 includes three hoses. Two rotating wheels 1c are provided above the hose inlet / outlet 1a1 inside the seat body 1a. The two rotating wheels are respectively located on both sides of the high-pressure hose assembly 5.

[0074] The tube coil 1b is equipped with a drive device, which includes a coil motor 7 and a coupling 8. One end of the two disc shafts passes through the side of the base 1a and is connected to the output shaft of the coil motor 7 through the coupling.

[0075] The tube disk 1b is equipped with a rotation signal generating device, which includes an encoder 10, a signal generating passive gear 11, and a signal generating active gear 12. The signal generating active gear 12 is fixedly connected to one end of the two disk shafts. The signal generating passive gear 11 meshes with the signal generating active gear 12. The encoder 10 is connected to the central shaft of the signal generating passive gear 11. The encoder 10 is communicatively connected to the control center.

[0076] The other end of the two disc shafts passes through the side of the base body 1a and is rotatably and sealed into the interface seat 1d fixedly set on the outer side of the base body 1a. The interface seat 1d is provided with a high-pressure water channel 1d1 that connects the end of the interface seat 1d and the annular cavity 1d11 on the wall of the disc shaft insertion hole. The high-pressure water channel 1d1 is connected to the annular cavity 1d11, and the end of the interface seat 1d is connected to the high-pressure water system 2. A sealing ring 6 is installed on both sides of each annular cavity 1d11.

[0077] like Figure 6 As shown, the traveling track 4 is fixedly installed on the ground of the mining area pipe gallery, with two circular cross-section monorails arranged in parallel; the traveling fine water mist nozzle assembly includes a vehicle body 3a and a traveling fine water mist nozzle 3b. The traveling fine water mist nozzle 3b is fixed on the vehicle body 3a and connected to one end interface of the high-pressure water channel 3a1 on the vehicle body 3a. A wheel 16 is rotatably installed on the lower part of the vehicle body 3a. The shape of the wheel 16 matches the traveling track 4. A wheel drive device is installed on the vehicle body 3a.

[0078] Furthermore, the wheel drive device includes a water motor 13, a drive main gear 14, and a gear wheel axle 15. The two ends of the gear wheel axle 15 are fixedly connected to the wheel 16. The drive main gear 14 and the gear on the gear wheel axle 15 mesh. The output shaft of the water motor 13 is connected to the central shaft of the drive main gear 14. The water motor 13 is connected to the high-pressure water channel 3a1 on the vehicle body 3a.

[0079] like Figure 7 As shown, to ensure that the high-pressure hose assembly 5 does not disengage and fail during the movement of the vehicle body 3a and the use of the fine water mist nozzle 3b, a locking device is provided between the hose connector in the high-pressure hose assembly 5 and the vehicle body 3a. The locking device includes a cover plate 17, a clamping ring 18, and a combined locking sleeve 19. Figure 8-11The clamping ring 18 has a through slot 18c, a blind slot 18d, a hollow ring groove 18b, and a lower through hole 18a arranged from top to bottom at its center. The combined locking sleeve 19 is composed of a left half sleeve 19a and a right half sleeve 19b assembled together. At the connection between the left half sleeve 19a and the right half sleeve 19b, a T-shaped platform 19a3 and a T-shaped groove 19b3 are respectively provided for mutual cooperation. A left slotted platform 19a2 and a right slotted platform 19b2 are respectively provided at opposite positions on the outer bottom of the left half sleeve 19a and the right half sleeve 19b. The upper part of the connection between the sleeve 19a and the right half sleeve 19b is provided with a mating pressing edge 19a1 and a notch 19b1, respectively. The left half sleeve 19a and the right half sleeve 19b are respectively provided with a left movable pressure plate 19a4 and a right movable pressure plate 19b4 connected by a left compression spring 19a5 and a right compression spring 19b5. The left movable pressure plate 19a4 and the right movable pressure plate 19b4 are semi-circular in shape. The center of the combined locking sleeve 19 is provided with a hose connector of the high-pressure hose assembly 5 and a central hole through which the hose passes.

[0080] The clamping ring 18 is rotatably connected to the interface of the vehicle body 3a via the cover plate 17. Specifically, the clamping ring 18 can be installed in a separate manner and then welded together, or the cover plate 17 can be set into a strip shape that can pass through the through slot 18c. First, the clamping ring 18 is placed on the vehicle body 3a, and then the cover plate 17 is passed through the through slot 18c and fixed to the vehicle body 3a with bolts. The upper part of the clamping ring 18 is provided with the through slot 18c, and a blind slot 18d is provided vertically at the bottom of the through slot 18c. A platform that cooperates with the through slot 18c and the blind slot 18d is provided at the bottom of the outer periphery of the combined locking sleeve 19. A movable pressure plate is provided in the inner cavity of the combined locking sleeve 19, and the movable pressure plate is connected to the top of the inner cavity of the combined locking sleeve 19 through a compression spring.

[0081] An automatic fire extinguishing method for mining area pipe gallery involves setting up an automatic fire extinguishing system for the mining area pipe gallery, including a control center and automatic fire extinguishing devices. The mining area pipe gallery is divided into several fire control units connected end to end. Each fire control unit is equipped with a fire detector. The control center obtains the fire detector signals from each fire control unit and sends instructions to the corresponding automatic fire extinguishing devices to extinguish the fire when fire extinguishing is required.

[0082] The automatic fire extinguishing system includes fixed fire extinguishing devices and mobile fire extinguishing devices. At least one fixed fire extinguishing device is installed in each fire control unit, comprising a fixed fine water mist nozzle and a high-pressure water system. A mobile fire extinguishing device is installed within the mine's utility tunnel. This mobile fire extinguishing device includes a base, a high-pressure water system, a mobile fine water mist nozzle assembly, and a travel track. The mobile fine water mist nozzle assembly is powered by the high-pressure water system and supplied with water. The travel track is located within the mine's utility tunnel, allowing the mobile fine water mist nozzle assembly to move along the track in both forward and backward directions. The base is fixedly installed within the mine's utility tunnel and serves as a transfer station for the high-pressure water system and the mobile fine water mist nozzle assembly. The mobile fire extinguishing device's range can cover the entire mine's utility tunnel.

[0083] The method for setting the travel range of the mobile fire extinguishing device is as follows: N mobile fire extinguishing devices are evenly distributed in the mine area pipe gallery. The total length of the mine area pipe gallery is L, and the travel range of the mobile fire extinguishing device is M. M should satisfy the following relationship: M≥S×[L / (N+1)], where S is the safety factor and the value of S is 1-10.

[0084] The fixed high-pressure water system is a high-pressure pump set, which is connected to fire water pipelines and power lines. A control valve set is installed on the high-pressure pump set, and the control valve set is communicatively connected to the control center.

[0085] The base 1 includes a base body 1a, a tube disc 1b, and an interface seat 1d.

[0086] The tube coil 1b consists of a coil body and coil shafts at both ends. The coil body includes a coiled cylinder and baffles on both sides. The coil shafts are rotatably installed inside the base 1a. A high-pressure water channel 1b1 is provided inside the tube coil 1b. One end of the hose connector in the high-pressure hose assembly 5 is sealed to the interface of the high-pressure water channel 1b1 on the coiled cylinder. After the end of the high-pressure hose assembly 5 is fixed on the coiled cylinder, it is wound around the coiled cylinder several times and then passes through the hose inlet / outlet 1a1 at the bottom of the base 1a. The other end of the hose connector in the high-pressure hose assembly 5 is sealed outside the base 1a and sealed to the vehicle body 3a of the traveling fine water mist nozzle assembly 3. Two rotating wheels 1c are provided above the hose inlet / outlet 1a1 inside the base 1a. The two rotating wheels are respectively located on both sides of the high-pressure hose assembly 5.

[0087] The tube coil 1b is equipped with a drive device, which includes a coil motor 7 and a coupling 8. One end of the two disc shafts passes through the side of the base 1a and is connected to the output shaft of the coil motor 7 through the coupling.

[0088] The tube disk 1b is equipped with a rotation signal generating device, which includes an encoder 10, a signal generating passive gear 11, and a signal generating active gear 12. The signal generating active gear 12 is fixedly connected to one end of the two disk shafts. The signal generating passive gear 11 meshes with the signal generating active gear 12. The encoder 10 is connected to the central shaft of the signal generating passive gear 11. The encoder 10 is communicatively connected to the control center.

[0089] The other end of the two disc shafts passes through the side of the base body 1a and is rotatably and sealed into the interface seat 1d fixedly provided on the outer side of the base body 1a. The interface seat 1d is provided with a high-pressure water channel 1d1 that connects the end of the interface seat 1d and the annular cavity 1d11 on the wall of the disc shaft insertion hole. The high-pressure water channel 1d1 is connected to the annular cavity 1d11, and the end of the interface seat 1d is connected to the high-pressure water system 2.

[0090] The walking track 4 is fixedly installed on the ground of the mining area pipe gallery, with two circular cross-section single rails arranged in parallel.

[0091] The walking fine water mist nozzle assembly includes a vehicle body 3a and a walking fine water mist nozzle 3b. The walking fine water mist nozzle 3b is fixed on the vehicle body 3a and is connected to one end of the high-pressure water channel 3a1 on the vehicle body 3a. A wheel 16 is rotatably provided on the lower part of the vehicle body 3a. The shape of the wheel 16 matches the walking track 4. A wheel drive device is provided on the vehicle body 3a.

[0092] The wheel drive device includes a water motor 13, a drive main gear 14 and a gear wheel axle 15. The two ends of the gear wheel axle 15 are fixedly connected to the wheel 16. The drive main gear 14 and the gear on the gear wheel axle 15 mesh. The output shaft of the water motor 13 is connected to the central shaft of the drive main gear 14. The water motor 13 is connected to the high-pressure water channel 3a1 on the vehicle body 3a.

[0093] The fire extinguishing method of the automatic fire extinguishing system for the mining area pipe gallery is as follows:

[0094] When the control center receives fire information from a fire detector in a fire control unit, it classifies the fire information according to the fire level determination program preset by the control center. The control center also presets the correspondence between fire level and activation of fixed fire extinguishing devices and mobile fire extinguishing devices.

[0095] When the initial fire level only requires the activation of the fixed fire extinguishing device of the fire control unit where the fire occurred, the control center activates the high-pressure pump unit of the fixed fire extinguishing device to provide high-pressure water to the fixed fine water mist nozzles for fire extinguishing. If the fire is not extinguished within the time set by the control center, the control center activates the adjacent mobile fire extinguishing device and controls the mobile fire extinguishing device to move to the fire control unit for fire extinguishing. If the fire is still not extinguished within the time set by the control center, the control center activates the next adjacent mobile fire extinguishing device and controls the mobile fire extinguishing device to move to the fire control unit for fire extinguishing. This continues until the next adjacent mobile fire extinguishing device can no longer move to the fire control unit. At this point, the control center determines that the fire level exceeds the limit of the automatic fire extinguishing system and notifies the mine firefighters to provide manual fire extinguishing support.

[0096] When the initial fire level requires the simultaneous activation of both fixed and mobile fire suppression systems, the control center activates the high-pressure pump unit of the fixed fire suppression system to provide high-pressure water to the fixed fine water mist nozzles for fire suppression. At the same time, based on the initial fire level, the control center activates the adjacent mobile fire suppression system and moves it to the fire control unit to extinguish the fire. If the fire is not extinguished within the time set by the control center, the control center activates the next adjacent mobile fire suppression system and moves it to the fire control unit to extinguish the fire. This continues until the next adjacent mobile fire suppression system can no longer move to the fire control unit. At this point, the control center determines that the fire level exceeds the limit of the automatic fire suppression system and notifies the mine fire department to provide manual fire suppression support.

[0097] When the initial fire level exceeds the limit of the automatic fire suppression system, notify the mine firefighters to provide manual fire suppression support.

[0098] The method of using the mobile fire extinguishing device is as follows: start the high-pressure pump set of the mobile fire extinguishing device, the high-pressure pump set drives the water motor 13 to rotate, the water motor 13 drives the wheels 16 to move on the walking track 4, and at the same time start the coil motor 7 to make the coil 1b rotate, and the high-pressure hose assembly 5 around the coil 1b moves with the vehicle body 3a. When the vehicle body 3a reaches the fire extinguishing location, stop driving the water motor 13, and the high-pressure valve group supplies water to the walking fine water mist nozzle 3b for fire extinguishing. After the fire extinguishing is over, stop supplying water to the walking fine water mist nozzle 3b, reverse the water motor 13 and the coil motor 7 to retract the high-pressure hose assembly 5 and move the walking fine water mist nozzle assembly 3 to the base 1.

[0099] The distance traveled by the vehicle body 3a is determined by the rotation signal generator on the tube disk 1b.

[0100] Furthermore, the hose connector in the high-pressure hose assembly 5 is locked to the interface of the vehicle body 3a via a locking device. This locking device includes a cover plate 17, a clamping ring 18, and a combined locking sleeve 19. The clamping ring 18 is rotatably connected to the interface of the vehicle body 3a via the cover plate 17. The upper part of the clamping ring 18 is provided with a through slot 18c, and a blind slot 18d is provided vertically at the bottom of the through slot 18c. A platform that mates with the through slot 18c and the blind slot 18d is provided at the bottom of the outer periphery of the combined locking sleeve 19. A movable pressure plate is provided in the inner cavity of the combined locking sleeve 19, and the movable pressure plate is connected to the top of the inner cavity of the combined locking sleeve 19 via a compression spring. The locking steps are as follows:

[0101] a. Connect the hose connector in the high-pressure hose assembly 5 to the interface 3a on the vehicle body.

[0102] b. Insert the left half 19a and the right half 19b of the combination locking sleeve 19 together and put the hose into the combination locking sleeve 19;

[0103] c. Insert the lower part of the combination locking sleeve 19 into the through slot 18c of the clamping ring 18, and press the combination locking sleeve 19 down until the upper surface of the slot is lower than the lower surface of the through slot 18c.

[0104] d. Rotate the clamping ring 18 by 90°;

[0105] e. Loosen the combination locking sleeve 19, and the slotted plate is pressed into the blind slotted groove 18d under the elastic action of the compression spring.

[0106] This invention discloses an automatic fire extinguishing system and method for mining area pipe corridors. In addition to providing fixed fire extinguishing devices, the system and method ensure the effectiveness of the mining area fire protection system by setting up mobile fire extinguishing devices. The high-pressure water-driven mobile fire extinguishing devices enable remote control. Locking devices at high-pressure pipe joints and interfaces ensure a stable connection, effectively preventing the failure of the entire mobile fire extinguishing device due to interface failure.

Claims

1. An automatic fire extinguishing system for a mining area utility tunnel, comprising a control center and automatic fire extinguishing devices, wherein the mining area utility tunnel is divided into several interconnected fire control units, each fire control unit is equipped with a fire detector, the control center acquires signals from the fire detectors of each fire control unit, and when fire extinguishing is required, instructs the corresponding automatic fire extinguishing device to extinguish the fire, characterized in that, The automatic fire extinguishing device includes fixed fire extinguishing devices and mobile fire extinguishing devices; Each fire control unit is equipped with at least one fixed fire extinguishing device, which includes a fixed fine water mist nozzle and a high-pressure water system; A mobile fire extinguishing device is installed in the mining area's utility tunnel. The mobile fire extinguishing device includes a base, a high-pressure water system, a mobile fine water mist nozzle assembly, and a travel track. The mobile fine water mist nozzle assembly is driven by the high-pressure water system and supplied with water to the nozzles. The travel track is set inside the mining area's utility tunnel, allowing the mobile fine water mist nozzle assembly to move along the track in the front-to-back direction. The base is fixedly installed inside the mining area's utility tunnel and serves as a transfer station for the high-pressure water system and the mobile fine water mist nozzle assembly. The mobile fire extinguishing system can cover the entire mine's utility tunnel. The high-pressure water system is a high-pressure pump set, which is connected to fire water pipelines and power lines. A control valve set is installed on the high-pressure pump set, and the control valve set is communicatively connected to the control center. The base (1) includes a base body (1a), a tube plate (1b), and an interface seat (1d). The tube coil (1b) consists of a coil body and two coil shafts at both ends. The coil body includes a coiled cylinder and baffles on both sides. The coil shafts are rotatably installed in the base (1a). A high-pressure water channel (1b1) is provided in the tube coil (1b). One end of the hose connector in the high-pressure hose assembly (5) is sealed to the interface of the high-pressure water channel (1b1) on the coiled cylinder. After the end of the high-pressure hose assembly (5) is fixed on the coiled cylinder, it is wound around the coiled cylinder several times and then passes through the hose inlet and outlet (1a1) at the bottom of the base (1a). The other end of the hose connector in the high-pressure hose assembly (5) is sealed outside the base (1a) and sealed to the vehicle body (3a) of the walking fine water mist nozzle assembly (3). Two rotating wheels (1c) are provided above the hose inlet and outlet (1a1) at the bottom of the base (1a). The two rotating wheels are respectively located on both sides of the high-pressure hose assembly (5). The tube coil (1b) is equipped with a drive device, which includes a coil motor (7) and a coupling (8). One end of the two disc shafts passes through the side of the base (1a) and is connected to the output shaft of the coil motor (7) through the coupling. The tube disk (1b) is equipped with a rotation signal generating device, which includes an encoder (10), a signal generating passive gear (11), and a signal generating active gear (12). The signal generating active gear (12) is fixedly connected to one end of the two disk shafts. The signal generating passive gear (11) meshes with the signal generating active gear (12). The encoder (10) is connected to the central shaft of the signal generating passive gear (11). The encoder (10) is communicatively connected to the control center. The other end of the two disc shafts passes through the side of the seat body (1a) and is rotatably and sealed into the interface seat (1d) fixedly provided on the outer side of the seat body (1a). The interface seat (1d) is provided with a seat high-pressure water channel (1d1) that connects the end of the interface seat (1d) and the annular cavity (1d11) on the wall of the disc shaft insertion hole. The disc high-pressure water channel (1b1) is connected to the annular cavity (1d11), and the end of the interface seat (1d) is connected to the high-pressure water system (2). The walking track (4) is fixedly set on the ground of the mining area pipe gallery, with two circular cross-section single rails set in parallel; The mobile fine water mist nozzle assembly includes a vehicle body (3a) and a mobile fine water mist nozzle (3b). The mobile fine water mist nozzle (3b) is fixed on the vehicle body (3a) and connected to one end of the high-pressure water channel (3a1) on the vehicle body (3a). A wheel (16) is rotatably provided on the lower part of the vehicle body (3a). The shape of the wheel (16) matches the walking track (4). A wheel drive device is provided on the vehicle body (3a). The wheel drive device includes a water motor (13), a drive main gear (14) and a gear wheel axle (15). The two ends of the gear wheel axle (15) are fixedly connected to the wheel (16). The drive main gear (14) and the gear on the gear wheel axle (15) mesh. The output shaft of the water motor (13) is connected to the central shaft of the drive main gear (14). The water motor (13) is connected to the high-pressure water channel (3a1) on the vehicle body (3a). A locking device is provided between the hose connector in the high-pressure hose assembly (5) and the vehicle body (3a). The locking device includes a cover plate (17), a clamping ring (18), and a combination locking sleeve (19). The clamping ring (18) is rotatably connected to the interface of the vehicle body (3a) through the cover plate (17). A through slot (18c) is provided on the upper part of the clamping ring (18). A blind slot (18d) is provided vertically at the bottom of the through slot (18c). A platform that cooperates with the through slot (18c) and the blind slot (18d) is provided on the bottom of the outer periphery of the combination locking sleeve (19). A movable pressure plate is provided in the inner cavity of the combination locking sleeve (19). The movable pressure plate is connected to the top of the inner cavity of the combination locking sleeve (19) through a compression spring.

2. The automatic fire extinguishing system for mining area pipe gallery according to claim 1, characterized in that, N mobile fire extinguishing devices are evenly distributed in the mine area pipe gallery. The total length of the mine area pipe gallery is L, and the travel range of the mobile fire extinguishing devices is M. M should satisfy the following relationship: M≥S×[L / (N+1)], where S is the safety factor and the value of S ranges from 1 to 10.

3. An automatic fire extinguishing method for pipe racks in mining areas, characterized in that, An automatic fire extinguishing system for the mining area pipe gallery is set up, including a control center and automatic fire extinguishing devices. The mining area pipe gallery is divided into several sections of fire control units connected end to end. Each fire control unit is equipped with a fire detector. The control center obtains the fire detector signals from each fire control unit and sends instructions to the corresponding automatic fire extinguishing device to extinguish the fire when fire extinguishing is required. The automatic fire extinguishing system includes fixed fire extinguishing devices and mobile fire extinguishing devices. At least one fixed fire extinguishing device is installed in each fire control unit, comprising a fixed fine water mist nozzle and a high-pressure water system. A mobile fire extinguishing device is installed within the mine's utility tunnel. This mobile fire extinguishing device includes a base, a high-pressure water system, a mobile fine water mist nozzle assembly, and a travel track. The mobile fine water mist nozzle assembly is powered by the high-pressure water system and supplied with water. The travel track is located within the mine's utility tunnel, allowing the mobile fine water mist nozzle assembly to move along the track in both forward and backward directions. The base is fixedly installed within the mine's utility tunnel and serves as a transfer station for the high-pressure water system and the mobile fine water mist nozzle assembly. The mobile fire extinguishing device's range can cover the entire mine's utility tunnel. The method for setting the travel range of the mobile fire extinguishing device is as follows: N mobile fire extinguishing devices are evenly distributed in the mine area pipe gallery. The total length of the mine area pipe gallery is L, and the travel range of the mobile fire extinguishing device is M. M should satisfy the following relationship: M≥S×[L / (N+1)], where S is the safety factor and the value of S is 1-10. The high-pressure water system is a high-pressure pump set, which is connected to fire water pipelines and power lines. A control valve set is installed on the high-pressure pump set, and the control valve set is communicatively connected to the control center. The base (1) includes a base body (1a), a tube plate (1b), and an interface seat (1d). The tube coil (1b) consists of a coil body and two coil shafts at both ends. The coil body includes a coiled cylinder and baffles on both sides. The coil shafts are rotatably installed in the base (1a). A high-pressure water channel (1b1) is provided in the tube coil (1b). One end of the hose connector in the high-pressure hose assembly (5) is sealed to the interface of the high-pressure water channel (1b1) on the coiled cylinder. After the end of the high-pressure hose assembly (5) is fixed on the coiled cylinder, it is wound around the coiled cylinder several times and then passes through the hose inlet and outlet (1a1) at the bottom of the base (1a). The other end of the hose connector in the high-pressure hose assembly (5) is sealed outside the base (1a) and sealed to the vehicle body (3a) of the walking fine water mist nozzle assembly (3). Two rotating wheels (1c) are provided above the hose inlet and outlet (1a1) at the bottom of the base (1a). The two rotating wheels are respectively located on both sides of the high-pressure hose assembly (5). The tube coil (1b) is equipped with a drive device, which includes a coil motor (7) and a coupling (8). One end of the two disc shafts passes through the side of the base (1a) and is connected to the output shaft of the coil motor (7) through the coupling. The tube disk (1b) is equipped with a rotation signal generating device, which includes an encoder (10), a signal generating passive gear (11), and a signal generating active gear (12). The signal generating active gear (12) is fixedly connected to one end of the two disk shafts. The signal generating passive gear (11) meshes with the signal generating active gear (12). The encoder (10) is connected to the central shaft of the signal generating passive gear (11). The encoder (10) is communicatively connected to the control center. The other end of the two disc shafts passes through the side of the seat body (1a) and is rotatably and sealed into the interface seat (1d) fixedly provided on the outer side of the seat body (1a). The interface seat (1d) is provided with a seat high-pressure water channel (1d1) that connects the end of the interface seat (1d) and the annular cavity (1d11) on the wall of the disc shaft insertion hole. The disc high-pressure water channel (1b1) is connected to the annular cavity (1d11), and the end of the interface seat (1d) is connected to the high-pressure water system (2). The walking track (4) is fixedly installed on the ground of the mining area pipe gallery, with two circular cross-section single rails set in parallel; The walking fine water mist nozzle assembly includes a vehicle body (3a) and a walking fine water mist nozzle (3b). The walking fine water mist nozzle (3b) is fixed on the vehicle body (3a) and connected to one end of the high-pressure water channel (3a1) on the vehicle body (3a). A wheel (16) is rotatably provided on the lower part of the vehicle body (3a). The shape of the wheel (16) matches the walking track (4). A wheel drive device is provided on the vehicle body (3a). The wheel drive device includes a water motor (13), a drive main gear (14) and a gear wheel axle (15). The two ends of the gear wheel axle (15) are fixedly connected to the wheel (16). The drive main gear (14) and the gear on the gear wheel axle (15) mesh. The output shaft of the water motor (13) is connected to the central shaft of the drive main gear (14). The water motor (13) is connected to the high-pressure water channel (3a1) on the vehicle body (3a). The fire extinguishing method of the automatic fire extinguishing system for the mining area pipe gallery is as follows: When the control center receives fire information from a fire detector in a fire control unit, it classifies the fire information according to the fire level determination program preset by the control center. The control center also presets the correspondence between fire level and activation of fixed fire extinguishing devices and mobile fire extinguishing devices. When the initial fire level only requires the activation of the fixed fire extinguishing device of the fire control unit where the fire occurred, the control center activates the high-pressure pump unit of the fixed fire extinguishing device to provide high-pressure water to the fixed fine water mist nozzles for fire extinguishing. If the fire is not extinguished within the time set by the control center, the control center activates the adjacent mobile fire extinguishing device and controls the mobile fire extinguishing device to move to the fire control unit for fire extinguishing. If the fire is still not extinguished within the time set by the control center, the control center activates the next adjacent mobile fire extinguishing device and controls the mobile fire extinguishing device to move to the fire control unit for fire extinguishing. This continues until the next adjacent mobile fire extinguishing device can no longer move to the fire control unit. At this point, the control center determines that the fire level exceeds the limit of the automatic fire extinguishing system and notifies the mine firefighters to provide manual fire extinguishing support. When the initial fire level requires the simultaneous activation of both fixed and mobile fire suppression systems, the control center activates the high-pressure pump unit of the fixed fire suppression system to provide high-pressure water to the fixed fine water mist nozzles for fire suppression. At the same time, based on the initial fire level, the control center activates the adjacent mobile fire suppression system and moves it to the fire control unit to extinguish the fire. If the fire is not extinguished within the time set by the control center, the control center activates the next adjacent mobile fire suppression system and moves it to the fire control unit to extinguish the fire. This continues until the next adjacent mobile fire suppression system can no longer move to the fire control unit. At this point, the control center determines that the fire level exceeds the limit of the automatic fire suppression system and notifies the mine fire department to provide manual fire suppression support. When the initial fire level exceeds the limit of the automatic fire suppression system, notify the mine firefighters to provide manual fire suppression support. The method of using the mobile fire extinguishing device is as follows: start the high-pressure pump group of the mobile fire extinguishing device, the high-pressure pump group drives the water motor (13) to rotate, the water motor (13) drives the wheels (16) to walk on the walking track (4), and at the same time start the coil motor (7) to make the coil (1b) rotate, and the high-pressure hose group (5) around the coil (1b) moves with the vehicle body (3a). When the vehicle body (3a) reaches the fire extinguishing location, stop driving the water motor (13), and the high-pressure valve group supplies water to the walking fine water mist nozzle (3b) for fire extinguishing. When the fire extinguishing is over, stop supplying water to the walking fine water mist nozzle (3b), reverse the water motor (13) and the coil motor (7) to retract the high-pressure hose group (5) and move the walking fine water mist nozzle assembly (3) to the base (1); The distance traveled by the vehicle body (3a) is determined by the rotation signal generator on the tube disk (1b).

4. The automatic fire extinguishing method for a mining area pipe gallery according to claim 3, characterized in that, The hose connector in the high-pressure hose assembly (5) is locked to the interface of the vehicle body (3a) by a locking device. The locking device includes a cover plate (17), a clamping ring (18), and a combination locking sleeve (19). The clamping ring (18) is rotatably connected to the interface of the vehicle body (3a) through the cover plate (17). The upper part of the clamping ring (18) is provided with a through slot (18c). A blind slot (18d) is provided vertically at the bottom of the through slot (18c). A platform that cooperates with the through slot (18c) and the blind slot (18d) is provided at the bottom of the outer periphery of the combination locking sleeve (19). A movable pressure plate is provided in the inner cavity of the combination locking sleeve (19). The movable pressure plate is connected to the top of the inner cavity of the combination locking sleeve (19) by a compression spring. The locking steps are as follows: Connect the hose connector in the high-pressure hose assembly (5) to the interface of the vehicle body (3a); Insert the left half (19a) and right half (19b) of the combination locking sleeve (19) together and put the hose into the combination locking sleeve (19); Insert the lower part of the combination locking sleeve (19) into the through slot (18c) of the clamping ring (18), and press the combination locking sleeve (19) down until the upper surface of the slot is lower than the lower surface of the through slot (18c); d. Rotate the clamping ring (18) 90°; e. Loosen the combination locking sleeve (19), and the slotted plate is pressed into the blind slotted groove (18d) under the elastic action of the compression spring.

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