An automatic fire extinguishing and monitoring system for coal mines

Abstract

The present invention discloses an automatic fire extinguishing and monitoring system for coal mines. The automatic fire extinguishing and monitoring system for coal mines includes an optical fiber installed along a conveyor belt and a first fire extinguishing mechanism. An optical fiber temperature measuring host is installed at one end of the optical fiber. The first fire extinguishing mechanism is installed at the upper end of the conveyor belt. The first fire extinguishing mechanism includes a plurality of first nozzles that match the conveyor belt. The medium sprayed by the plurality of first nozzles can cover the conveyor belt. The first fire extinguishing mechanism also includes a water pipe. A plurality of shunt pipes are installed on the water pipe. A plurality of first nozzles are installed on the shunt pipes. An electric ball valve is installed between the water pipe and the shunt pipe. The electric ball valve is used to detect the situation in the coal mine and control the passage of the water pipe and the shunt pipe. Compared with the prior art, the automatic fire extinguishing and monitoring system for coal mines of the present invention can extinguish a fire in a coal mine without manual intervention, thereby reducing the safety hazards caused by manual intervention in fire extinguishing and improving the fire extinguishing efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of mining equipment, and in particular relates to an automatic fire extinguishing and monitoring system for coal mines. Background Art

[0002] As the primary energy source for industrial production, coal holds a position unmatched by other energy sources. Coal mine safety has always been a top priority in coal mining operations. With the continued development and expansion of mines, goafs have become a significant source of danger underground. In particular, once a fire breaks out in a goaf, due to its enclosed, uninhabited environment, it's impossible to detect and locate the ignition point, complicating rescue efforts and potentially even triggering gas and coal dust explosions. Therefore, effective safety monitoring within goafs is crucial for minimizing loss of life and property.

[0003] Fires in goafs are generally caused by conveyor belts used to transport coal running off track, bearings lacking oil or damaged, rollers breaking, wiring aging, etc. When a conveyor belt catches fire, it is generally extinguished using sandboxes, sandbags, handheld fire extinguishers, etc. The efficiency of fire extinguishing is low, and people need to enter the goaf to carry out fire extinguishing operations, which poses certain safety hazards.

[0004] In order to further reduce the occurrence of conveyor belt fires in goafs, manual inspections and dedicated personnel are generally relied upon for conveyor belt monitoring. When a fire occurs, underground personnel are required to go to the scene for manual operation. Whether they can enter the fire extinguishing scene in the first time, whether the fire extinguishing equipment at the fire extinguishing scene is easy to use, and whether the workers can use the fire extinguishing equipment all depend on whether the daily management and training of the coal mine are in place. In addition, manual inspections are inefficient, and there are great risks of missed inspections, as well as greater safety hazards.

[0005] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0006] The object of the present invention is to provide an automatic fire extinguishing and monitoring system for coal mines, which can solve the technical problems raised in the above background technology.

[0007] In order to achieve the above object, a specific embodiment of the present invention provides the following technical solutions:

[0008] An automatic fire extinguishing system for a coal mine includes an optical fiber installed along a conveyor belt and a first fire extinguishing mechanism. An optical fiber temperature measuring host is installed at one end of the optical fiber. The first fire extinguishing mechanism is installed at the upper end of the conveyor belt. The first fire extinguishing mechanism includes several first nozzles matching the conveyor belt. The medium sprayed by the several first nozzles can cover the conveyor belt.

[0009] In one or more embodiments of the present invention, the first fire extinguishing mechanism also includes a water pipe, a plurality of diversion pipes are installed on the water pipe, a number of the first nozzles are installed on the diversion pipes, and an electric ball valve is installed between the water pipe and the diversion pipe. The electric ball valve is used to detect the situation in the coal mine and control the passage of the water pipe and the diversion pipe.

[0010] In one or more embodiments of the present invention, a monitoring system is included that matches the optical fiber. The monitoring system uses the properties of the optical fiber temperature measurement cable to monitor the temperature of the conveyor belt and realize the temperature prediction of the conveyor belt. The first fire extinguishing mechanism operates according to the temperature prediction result of the conveyor belt.

[0011] In one or more embodiments of the present invention, a bundled pipe is provided, wherein the bundled pipe includes a first pipe, a second pipe, a third pipe, and a fourth pipe are installed inside the first pipe, the second pipe is used to transport a fire extinguishing medium, the third pipe is used to transport concrete materials, and the fourth pipe is used to transport oxygen.

[0012] In one or more embodiments of the present invention, a plurality of connecting pipes are installed on the bundle pipes. A connecting disc is installed at one end of the connecting pipe away from the bundle pipe. A slide groove is provided on the connecting disc. A second fire extinguishing mechanism matching the slide groove is rotatably connected to the connecting disc. The second fire extinguishing mechanism rotates along the slide groove to spray concrete material and form a temporary shelter.

[0013] In one or more embodiments of the present invention, a spring tube matching the fourth pipe is installed in the connecting disk, the spring tube and the fourth pipe are connected, a mask is installed at one end of the spring tube away from the fourth pipe, and a one-way valve is installed on the mask.

[0014] In one or more embodiments of the present invention, the second fire extinguishing mechanism includes a liquid exchange structure and a second nozzle, the upper end of the second nozzle is fixedly connected to a universal connector, the end of the universal connector away from the second nozzle is fixedly connected to an electric slider, the electric slider matches the slide groove, the liquid exchange structure includes a first shell and a second shell, the first shell and the second shell are rotatably connected, a second cavity is formed between the first shell and the second shell, a feed pipe is installed between the second cavity and the second nozzle, and the second cavity and the second pipe are connected.

[0015] In one or more embodiments of the present invention, a plurality of third nozzles are fixedly connected along the outside of the connecting plate, and a retaining ring is rotatably connected in the slide groove. The retaining ring separates the second cavity and forms a first cavity. The first cavity is connected to the third pipe, and the second cavity is connected to the first pipe. The third nozzles are used to spray out the fire extinguishing medium in the second cavity.

[0016] In order to achieve the above object, a specific embodiment of the present invention provides the following technical solutions:

[0017] A coal mine monitoring system includes an automatic fire extinguishing system for coal mines, a vehicle body, an Internet of Things module, and a visualization module. The vehicle body is equipped with a camera and a detector. The camera is used to detect the air quality in the coal mine. The detector is used to photograph the situation in the coal mine. The Internet of Things module is used to upload data collected by the camera and the detector to the cloud. The visualization module downloads the data from the cloud and converts it into a visual chart for display. The vehicle body is also provided with a card slot that matches the bundle tube.

[0018] In one or more embodiments of the present invention, the vehicle body includes two chassis, pillars are connected in an up and down sliding manner in the two chassis, a cross bar is installed between the two pillars, the slot is opened in the middle of the cross bar, a plurality of extension racks are fixedly connected to the cross bar, the camera and the detector are both installed on the extension rack, a storage tank is installed between the two chassis, and a plurality of fourth nozzles are installed on the storage tank.

[0019] Compared with the existing technology, the automatic fire extinguishing and monitoring system for coal mines of the present invention can extinguish fires in coal mines without manual intervention, thus reducing the safety hazards caused by manual intervention in fire extinguishing and improving fire extinguishing efficiency.

[0020] It can detect the situation under the coal mine in real time and can detect it during patrol. Compared with manual inspection, it does not require additional training, can improve inspection efficiency, avoid missed inspections, and thus avoid safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the structure of an automatic fire extinguishing system for coal mines in one embodiment of the present invention Figure 1 ;

[0023] Figure 2 A schematic diagram of the structure of an automatic fire extinguishing system and monitoring system for coal mines in one embodiment of the present invention Figure 1 ;

[0024] Figure 3 A schematic diagram of the structure of an automatic fire extinguishing system for coal mines in one embodiment of the present invention Figure 2 ;

[0025] Figure 4 A partial cross-sectional view of an automatic fire extinguishing system for coal mines according to an embodiment of the present invention Figure 1 ;

[0026] Figure 5 for Figure 4 Schematic diagram of the structure at A in the middle;

[0027] Figure 6 for Figure 4 Schematic diagram of the structure at B in the middle;

[0028] Figure 7 A schematic diagram of the structure of an automatic fire extinguishing system for coal mines in one embodiment of the present invention Figure 3 ;

[0029] Figure 8 for Figure 7 Schematic diagram of the structure at C in the middle;

[0030] Figure 9 This is a schematic structural diagram of a protective body in one embodiment of the present invention;

[0031] Figure 10 This is a schematic structural diagram of a coal mine monitoring system according to an embodiment of the present invention;

[0032] Figure 11 This is a usage status diagram of an automatic fire extinguishing system and a monitoring system for coal mines in one embodiment of the present invention.

[0033] Description of main reference numerals:

[0034] 1. Water pipe; 2. Diverter pipe; 3. First nozzle; 4. Electric ball valve; 5. Conveyor belt; 6. Optical fiber; 7. Optical fiber temperature measurement host; 8. Bundle tube; 801. First pipeline; 802. Second pipeline; 803. Third pipeline; 804. Fourth pipeline; 9. Connecting pipe; 10. Connecting plate; 1001. Chute; 11. Liquid exchange structure; 1101. First shell; 1102. Second shell; 1103. Retaining ring; 12. First cavity; 13. Second cavity; 14. Electric slider; 15. Universal connector; 16. Second nozzle; 1601. First nozzle; 1602. Second nozzle; 17. Feed pipe; 18. Third nozzle; 19. Spring tube; 20. Mask; 21. One-way valve; 22. Chassis; 23. Drive mechanism; 24. Support; 25. Crossbar; 2501. Card slot; 26. Extension rack; 27. Camera; 28. Detector; 29. ​​Storage tank; 2901. Fourth nozzle. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0036] An automatic fire extinguishing and monitoring system for a coal mine in one embodiment of the present invention includes an automatic fire extinguishing system for a coal mine and a monitoring system for a coal mine.

[0037] like Figures 1 to 9 As shown, the automatic fire extinguishing system for coal mines includes an optical fiber 6 installed on a conveyor belt 5. A fiber optic temperature measurement unit 7 is installed at one end of the optical fiber 6. Together, these two units can monitor the temperature of the entire conveyor belt 5 in real time. The system works by determining the temperature at any point on the conveyor belt 5 based on the ratio of the anti-Stokes light signal to the anti-Stokes light signal intensity.

[0038] like Figure 1 As shown, a first fire extinguishing mechanism is installed at the upper end of the conveyor belt 5. The first fire extinguishing mechanism can extinguish the fire of the conveyor belt 5 after it catches fire, and can also cool the conveyor belt 5. The first fire extinguishing mechanism includes a water pipe 1, on which a plurality of diversion pipes 2 are provided. The diversion pipes 2 cover the upper end surface of the conveyor belt 5, and a plurality of first nozzles 3 are fixedly connected to the diversion pipes 2. An electric ball valve 4 is installed between the water pipe 1 and the diversion pipes 2. The electric ball valve 4 is used to control the passage between the water pipe 1 and the diversion pipes 2. When the water pipe 1 detects that the temperature of the conveyor belt 5 is too high and the conveyor belt 5 needs to be cooled or extinguished, the medium transported in the water pipe 1 is output from the first nozzle 3, and the conveyor belt 5 is cooled or extinguished.

[0039] Due to the plasticity of the optical fiber 6, it can completely cover the conveyor belt 5, eliminating any blind spots. Multiple diversion tubes 2 can completely cover the conveyor belt 5. The diversion tubes 2 and the optical fiber 6 work together to comprehensively monitor, extinguish, and cool the conveyor belt 5. This prevents fires in blind monitoring or fire-extinguishing areas of the conveyor belt 5 from impacting coal mining progress.

[0040] Specifically, such as Figure 1As shown, the fiber optic temperature measurement host 7 is specifically a flameproof and intrinsically safe distributed fiber optic temperature measurement host for mining. It uses a large, operable screen for convenient on-site data display, operation, and alarming, and can operate independently without being connected to a host computer. It also supports multiple fire alarm modes, including early warning, temperature difference, positioning, and trend alarm lights. Alarm zones and alarm modes can be arbitrarily set, and it has self-diagnosis and self-repair functions. It can automatically identify the location and time of fiber 6 breakage, and fiber 6 breakage does not affect device data demodulation. The optical fiber 6 connected to the fiber optic temperature measurement host 7 serves as both a temperature sensor and a signal transmission channel, eliminating the need for other measurement or transmission devices, and simplifying system configuration.

[0041] Specifically, such as Figure 1 As shown, the electric ball valve 4 is a mining-grade intrinsically safe electric ball valve capable of opening and closing within 5 seconds. The electric ball valve 4 is the actuator that enables the normal operation of the device's various functions. It is used underground in coal mines as a control device for water pipe 1 and diversion pipe 2. It features a two-piece high platform, integrated circuit circuitry, a control panel, and an interface panel with lights, allowing for connection to various sensors.

[0042] Furthermore, the electric ball valve 4 is equipped with a smoke sensor. When the sensor detects smoke levels exceeding the specified value, it outputs a high-level signal, controlling the electric ball valve to open and spray water through the sprinkler to extinguish the fire. The automatic fire extinguishing device is connected to the switch via a 485 bus, and after signal conversion, it is connected to the switch. The upper computer monitoring software is the wellbore alarm fire extinguishing control device monitoring software. This monitoring software can be used to view the number and open / close status of each ball valve in real time. It can also directly control the ball valve operation and modify parameters through the monitoring software.

[0043] In this embodiment, the optical fiber 6 and the optical fiber temperature measurement host 7 cooperate to monitor the temperature of the conveyor belt 5 in real time. Signals are transmitted through the optical fiber 6 and received by the optical fiber temperature measurement host 7. If the optical fiber 6 detects that a certain temperature on the conveyor belt 5 is too high, indicating a fire, the optical fiber temperature measurement host 7 controls the electric ball valve 4 corresponding to the high-temperature location. The medium in the water pipe 1 passes through the diverter pipe 2 and is sprayed out by the first nozzle 3, extinguishing the fire or cooling the high-temperature area on the conveyor belt 5.

[0044] The electric ball valve 4 also has the function of separate detection. When the electric ball valve 4 detects that the temperature in the current area is too high, the smoke concentration, gas concentration and other parameters are abnormal, the electric ball valve 4 can also open the passage between the water pipe 1 and the diversion pipe 2 separately, so that the first nozzle 3 can spray the corresponding medium to prevent the occurrence of fire in the current detection area, thereby greatly improving the safety of the coal mine.

[0045] In another embodiment, when equipment in a coal mine breaks down, it is still necessary to manually enter the coal mine to inspect and repair the equipment. If a fire breaks out in the coal mine during the inspection and repair process, it will be difficult for maintenance personnel to escape from the coal mine immediately, which poses a certain safety hazard. Figures 2 to 9 As shown, the automatic fire extinguishing system for coal mines also includes a bundled pipe 8, which is equipped with multiple secondary fire extinguishing mechanisms. These secondary fire extinguishing mechanisms not only extinguish fires and reduce temperatures in the coal mine, but also create temporary shelters, creating a safer space for workers to escape, rest, or take shelter. Furthermore, they can form temporary sealing walls in the coal mine, blocking and sealing off the fire source in areas with larger fires, minimizing fire accidents caused by fires in the coal mine.

[0046] Specifically, the bundle pipe 8 includes a first pipe 801, inside which are arranged a second pipe 802, a third pipe 803 and a fourth pipe 804, wherein the second pipe 802 is used to transport fire extinguishing medium, the third pipe 803 is used to transport concrete materials, and the fourth pipe 804 is used to transport oxygen.

[0047] like Figures 2 to 9 As shown, the second fire extinguishing mechanism includes a connecting plate 10. A connecting pipe 9 is installed between the connecting plate 10 and the bundled pipe 8, and is used to secure the connecting plate 10 and the bundled pipe 8 together. A second nozzle 16 is rotatably connected to the connecting plate 10. Second nozzle 16 is mounted on multiple first nozzles 1601. The first nozzles 1601 and second nozzles 16 cooperate to spray the medium in the second pipe 802 or the third pipe 803, thereby achieving fire extinguishing operations or building a shelter.

[0048] Specifically, a liquid exchange structure 11 is fixedly connected to the connecting disk 10. The liquid exchange structure 11 includes a first shell 1101 and a second shell 1102. The first shell 1101 and the second shell 1102 are rotatably connected, and the connection is sealed. The first shell 1101 and the second shell 1102 form a second cavity 13. The interior of the second cavity 13 is rotatably connected to a retaining ring 1103 that matches the second shell 1102. The retaining ring 1103 separates the second cavity 13 and forms the first cavity 12. The first cavity 12 is connected to the third pipe 803, and the second cavity 13 is connected to the second pipe 802. That is, connecting pipes are installed between the first cavity 12 and the third pipe 803, and between the second cavity 13 and the second pipe 802.

[0049] like Figures 2 to 9As shown, the upper end of the second nozzle 16 is fixedly connected to a universal connector 15, through which the angle of the second nozzle 16 can be arbitrarily adjusted. The end of the universal connector 15 away from the second nozzle 16 is fixedly connected to the electric slider 14. The connecting plate 10 is provided with a slide 1001 that matches the electric slider 14. The electric slider 14 slides in the slide 1001 and performs a circular motion. A feed pipe 17 is installed between the second nozzle 16 and the second shell 1102. One end of the feed pipe 17 is connected to the second nozzle 16, and the other end is connected to the first cavity 12 and the second cavity 13. The passage between the optical fiber temperature measurement host 7 and the first cavity 12 or the second cavity 13 is controlled by a valve. In other words, the second nozzle 16 can spray both fire extinguishing medium and concrete material.

[0050] Specifically, the feed pipe 17 is a pipe with a certain hardness. When the second nozzle 16 slides along the chute 1001, it can rotate with the feed pipe 17, and the feed pipe 17 rotates with the second housing 1102 on the retaining ring 1103. In this way, no matter how the second nozzle 16 rotates, the pipe will not be entangled.

[0051] Furthermore, Figures 2 to 9 As shown, a second nozzle 1602 is also fixedly connected to the second nozzle 16. Second nozzle 1602 is located between the two first nozzles 1601 and can simultaneously spray a different medium than the first nozzles 1601. Specifically, the first nozzles 1601 can spray concrete material, while the second nozzles 1602 spray a fire extinguishing medium. The concrete material sprayed by the first nozzles 1601 can form a temporary shelter, specifically composed of two layers of protection, with a filling chamber formed between the two layers. The fire extinguishing agent sprayed by the second nozzle 1602 can be deposited in the filling chamber, thereby enhancing the shelter's protective effectiveness.

[0052] Typically, the shelter is in the shape of a tube with a lid, and a person can stand or squat inside the shelter.

[0053] like Figures 2 to 9As shown, a spring tube 19 that matches the fourth pipe 804 is installed in the connecting disk 10. The spring tube 19 and the fourth pipe 804 are connected, and the spring tube 19 can be stretched. A mask 20 is installed on the end of the spring tube 19 away from the fourth pipe 804. The oxygen in the fourth pipe 804 can be inhaled through the mask 20. The mask 20 is provided with a one-way valve 21, and the gas exhaled by the person can be discharged through the one-way valve 21. The coordination of the spring tube 19, the mask 20 and the one-way valve 21 allows people to continue breathing in an oxygen-deficient environment or an environment that is not suitable for breathing. For example, in an environment where fire is still being extinguished, a shelter is built by the second nozzle 16, and the mask 20 is provided to the person in the shelter, so that the person can continue breathing in the shelter, while the fire extinguishing medium is outside the shelter. It can not only ensure the safety of people working in coal mines when extinguishing fires, but also ensure that the efficiency of fire extinguishing will not be affected by the workers in coal mines, thus avoiding the situation where fire extinguishing is delayed due to the failure of people in coal mines to evacuate, or avoiding the situation where full efforts cannot be made to extinguish the fire in the first place, thus causing the loss to expand.

[0054] During construction, the shelter is printed using 3D printing technology, and concrete material is sprayed out through the second nozzle 16. Construction of the shelter can be completed in 1-2 minutes. Construction is typically activated by a person pulling on the spring tube 19. When the spring tube 19 is pulled to a certain degree, the second nozzle 16 detects the person's position and rotates along the chute 1001. During this process, concrete material is sprayed around the person's outer edge. The high temperature environment of the coal mine fire allows the concrete material to dry quickly, allowing the shelter to be constructed quickly.

[0055] like Figures 4 to 6 As shown, a plurality of third nozzles 18 are fixedly connected to the outer wall of the second shell 1102. The third nozzles 18 are communicated with the second cavity 13. The fire extinguishing medium can be sprayed outward through the third nozzles 18. The fire extinguishing medium eventually contacts the outer surface of the shelter. The fire extinguishing medium protects the shelter while extinguishing the fire.

[0056] In this embodiment, the working principle of the automatic fire extinguishing system for coal mines is as follows: if a fire occurs in a coal mine and direct fire extinguishing is required, the optical fiber 6 is first used to determine the location of the fire source, and the second nozzle 16 at the corresponding position is activated according to the location of the fire source. The second nozzle 16 rotates and faces the fire source. The fire extinguishing medium in the second pipe 802 passes through the connecting pipe, the second cavity 13, the feed pipe 17, and the second nozzle 16 in sequence, and is finally sprayed from the first nozzle 1601 or the second nozzle 1602 to the fire source to achieve the fire extinguishing operation.

[0057] like Figure 11As shown, if the location of the fire is located in the goaf, and at this time, there are maintenance personnel in the goaf to maintain the equipment, the maintenance personnel cannot escape from the fire scene in the first time. If the fire is not extinguished urgently, it is very likely to cause greater losses. The maintenance personnel can pull the spring tube 19 and wear the mask 20 on the face. Oxygen can be inhaled in the mask 20, and the gas exhaled by the maintenance personnel is discharged by the one-way valve 21. In the process of pulling the spring tube 19, the second nozzle 16 detects the location of the maintenance personnel and transports the concrete material from the third pipe 803 to the connecting pipe, the first cavity 12, the feed pipe 17, and the second nozzle 16 in sequence, and finally sprayed out through the two first nozzles 1601 to form a shelter outside the maintenance personnel. The shelter can isolate a certain temperature and provide protection for the maintenance personnel to avoid the impact of other fire extinguishing media such as nitrogen and water released during the fire extinguishing operation.

[0058] In another embodiment, if Figure 2 、 Figure 10 As shown, the coal mine monitoring system includes a vehicle body, mounted with a camera 27 and a detector 28. The vehicle body is capable of reciprocating within the coal mine, and in conjunction with the camera 27 and detector 28, enables mobile monitoring within the coal mine. The coal mine monitoring system also includes an Internet of Things (IoT) module and a visualization module. The IoT module uploads data collected by the camera 27 and detector 28 to the cloud. The visualization module accesses this cloud data and converts it into visual charts for display on a display screen. The visualization module can also predict hazards based on this accessed data.

[0059] like Figure 2 、 Figure 10 As shown, the vehicle body is also provided with a retaining slot 2501 that mates with the bundle tube 8. When the bundle tube 8 is not installed in the coal mine, one end of the bundle tube 8 is placed in the retaining slot 2501. This end of the bundle tube 8 can be pulled by the vehicle body, significantly reducing the labor required to install the bundle tube 8. When the second fire extinguishing mechanism is installed on the bundle tube 8, the installation position is also fixed. After the second fire extinguishing mechanism is installed, the vehicle body can continue to move.

[0060] like Figure 10As shown, the vehicle body includes a chassis 22, the lower end of which is fixedly connected to a drive mechanism 23, which drives the chassis 22 to move. There are generally two chassis 22, and pillars 24 are slidably connected to the chassis 22. The pillars 24 slide up and down, and the height of the vehicle body can be adjusted by sliding the pillars 24 up and down. A crossbar 25 is detachably mounted between the two pillars 24, and a slot 2501 is provided on the crossbar 25. In actual use, crossbars 25 of different lengths can be installed according to the width of the coal mine to facilitate the vehicle body to enter the coal mine. Several expansion racks 26 are also fixedly connected to the crossbar 25, and other detection equipment can also be installed on the expansion racks 26. The expansion racks 26 are an integrated expansion structure that integrates a fixed bracket and a data connection bracket. Other detection equipment is installed on the expansion racks 26, and the data between the vehicle body and the detection equipment is then interconnected via a data cable, which can save the time required for data connection.

[0061] like Figure 10 As shown, a storage tank 29 is mounted between the two chassis 22. The storage tank 29 contains a fire extinguishing medium and is equipped with multiple fourth nozzles 2901. If the vehicle detects high temperatures during patrol, the fire extinguishing medium in the storage tank 29 can be ejected through the fourth nozzles 2901 to extinguish fires or reduce temperatures within the coal mine. By carrying the storage tank 29 on the vehicle and coordinating with detection equipment, the vehicle can be moved to locations where detection equipment is not installed to conduct inspections of the current area. Even locations where detection equipment is not necessary can be inspected using the coal mine monitoring system, improving safety in coal mines and preventing disasters caused by missed inspections of certain locations.

[0062] In this embodiment, the working principle of the coal mine monitoring system is: the chassis 22 is driven to move by the driving mechanism 23, and the vehicle body can move in the coal mine. During the movement, the detection equipment on the vehicle body realizes the detection under the coal mine, and can control the high temperature or other conditions under the coal mine, thereby improving the safety of the workers and work equipment under the coal mine.

[0063] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0064] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An automatic fire extinguishing system for coal mines, characterized in that: include: An optical fiber installed along the conveyor belt, with an optical fiber temperature measurement host installed at one end of the optical fiber; a first fire extinguishing mechanism, the first fire extinguishing mechanism being mounted on an upper end of the conveyor belt; The first fire extinguishing mechanism includes a plurality of first nozzles matching the conveyor belt, and the medium sprayed by the plurality of first nozzles can cover the conveyor belt; The automatic fire extinguishing system for coal mines further includes a bundle pipe, the bundle pipe including a first pipe, a second pipe, a third pipe, and a fourth pipe installed inside the first pipe, the second pipe being used to transport a fire extinguishing medium, the third pipe being used to transport concrete materials, and the fourth pipe being used to transport oxygen; A plurality of connecting tubes are installed on the bundle tube, and a connecting plate is installed at one end of the connecting tube away from the bundle tube; The connecting plate is provided with a chute, and the connecting plate is rotatably connected to a second fire extinguishing mechanism that matches the chute. The second fire extinguishing mechanism rotates along the chute to spray concrete material and form a temporary shelter. The second fire extinguishing mechanism includes a liquid exchange structure and a second nozzle, the upper end of the second nozzle is fixedly connected to a universal connector, the end of the universal connector away from the second nozzle is fixedly connected to an electric slider, and the electric slider matches the slide groove; The liquid exchange structure includes a first shell and a second shell, the first shell and the second shell are rotatably connected, a second cavity is formed between the first shell and the second shell, a feed pipe is installed between the second cavity and the second nozzle, and the second cavity and the second pipeline are connected.

2. The automatic fire extinguishing system for coal mines according to claim 1, characterized in that: The first fire extinguishing mechanism further includes a water pipe, a plurality of diversion pipes are installed on the water pipe, and a plurality of the first nozzles are installed on the diversion pipes; An electric ball valve is installed between the water pipe and the diversion pipe. The electric ball valve is used to detect the situation in the coal mine and control the passage of the water pipe and the diversion pipe.

3. An automatic fire extinguishing system for coal mines according to claim 1 or 2, characterized in that: It includes a monitoring system matched with the optical fiber, which uses the properties of the optical fiber temperature measurement cable to monitor the temperature of the conveyor belt and realize the temperature prediction of the conveyor belt. The first fire extinguishing mechanism operates according to the temperature prediction result of the conveyor belt.

4. The automatic fire extinguishing system for coal mines according to claim 1, characterized in that: A spring tube matching the fourth pipe is installed in the connecting disk, the spring tube and the fourth pipe are communicated, a mask is installed on one end of the spring tube away from the fourth pipe, and a one-way valve is installed on the mask.

5. The automatic fire extinguishing system for coal mines according to claim 1, characterized in that: A plurality of third nozzles are fixedly connected along the outside of the connecting plate, and a retaining ring matching the second shell is rotatably connected to the inside of the second cavity. The retaining ring separates the second cavity and forms a first cavity. The first cavity is connected to the third pipe, and the second cavity is connected to the second pipe. The third nozzle is used to spray out the fire extinguishing medium in the second cavity.

6. A coal mine monitoring system, characterized in that: The automatic fire extinguishing system for a coal mine according to any one of claims 1 to 5 further comprises: A vehicle body, wherein a camera and a detector are installed on the vehicle body, wherein the camera is used to detect the air quality in the coal mine, and the detector is used to photograph the situation in the coal mine; An Internet of Things module, which is used to upload data collected by the camera and detector to the cloud; A visualization module, which downloads data from the cloud and converts it into visual charts for display; The vehicle body is also provided with a slot matching the bundle tube.

7. A coal mine monitoring system according to claim 6, characterized in that: The vehicle body comprises two chassis, pillars are connected in an upward and downward sliding manner in the two chassis, a crossbar is installed between the two pillars, and the slot is provided in the middle of the crossbar; A plurality of extension racks are fixedly connected to the crossbar, and the cameras and detectors are mounted on the extension racks; A storage tank is installed between the two chassis, and a plurality of fourth nozzles are installed on the storage tank.

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