An intelligent fire extinguishing protection system for mines

Abstract

The present invention discloses an intelligent fire extinguishing and protection system for mines, which belongs to the field of coal mine production technology and includes an optical fiber distributed temperature measurement system, a sprinkler fire extinguishing system, and a walking fire extinguishing device. The optical fiber distributed temperature measurement system includes a mine-used temperature-sensing optical cable and a temperature measurement host. The mine-used temperature-sensing optical cable is distributed and arranged in the goaf and on the belt conveyor, and one end of the mine-used temperature-sensing optical cable is connected to the temperature measurement host. Compared with the prior art, the intelligent fire extinguishing and protection system for mines of the present invention uses optical fiber temperature measurement technology to accurately locate the ignition point in the goaf, and enters the goaf through the walking fire extinguishing device, uses nitrogen spraying to isolate the ignition point and cool the surrounding area to prevent the spread of the fire, and combines with water spraying to extinguish the fire, thereby realizing safe and intelligent fire extinguishing and protection; while spraying nitrogen, it can extract the gas inside the goaf, thereby reducing the oxygen and gas concentration in the goaf, achieving flame retardancy and explosion prevention, and improving the fire extinguishing and protection performance.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal mine production, and in particular relates to an intelligent fire extinguishing and protection system for mines. Background Art

[0002] As the primary energy source for my country's industrial production, coal holds an unparalleled position. Coal mine safety has always been a top priority. 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 difficult 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] Currently, my country's coal mine fire prevention and control deployment is relatively lagging. Infrastructure development is out of sync with the development of intelligent coal mines, and supporting equipment is inadequate. Coal mine fire monitoring still relies on manual inspections and dedicated personnel. When a fire breaks out, underground personnel must manually operate the equipment on-site. Whether they can reach the fire scene immediately, whether the firefighting equipment is effective, and whether workers are proficient in using the equipment all depend on the effectiveness of daily coal mine management and training. This inefficiency leads to significant risks of missed inspections.

[0004] In the existing technology, although fiber optic distributed temperature measurement technology, infrared thermal imaging technology, ultraviolet wavelength flame detection technology, and smoke and toxic gas laser spectrum detection technology can be used to monitor fires in goafs, since the fire points in goafs are not fixed, even if fiber optic distributed temperature measurement technology can be used to monitor fires in goafs, it is impossible to accurately and effectively extinguish the fire points in the early stages of the fire, resulting in the spread of fire and encountering high-concentration gas, which may cause larger mine fire and explosion accidents.

[0005] Therefore, in response to the above technical problems, it is necessary to provide an intelligent fire extinguishing protection system for mines.

[0006] 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

[0007] The purpose of the present invention is to provide an intelligent fire extinguishing and protection system for mines, which can solve the problem of being unable to accurately and effectively extinguish the fire point in the early stage of the fire, resulting in the spread of the fire and causing larger mine fire and explosion accidents when encountering high concentrations of gas.

[0008] In order to achieve the above object, a specific embodiment of the present invention provides the following technical solutions:

[0009] A mine-used intelligent fire extinguishing and protection system comprises an optical fiber distributed temperature measurement system, a sprinkler fire extinguishing system, and walking fire extinguishing equipment.

[0010] The optical fiber distributed temperature measurement system includes a mine-used temperature-sensing optical cable and a temperature measurement host. The mine-used temperature-sensing optical cable is distributed in the goaf and on the belt conveyor, and one end of the mine-used temperature-sensing optical cable is connected to the temperature measurement host.

[0011] The sprinkler fire extinguishing system includes a water supply pipeline, which is arranged above the belt conveyor and has multiple sets of electric ball valves and multiple sets of sprinkler nozzles fixedly installed on the water supply pipeline;

[0012] The walking fire extinguishing equipment includes a body and a gas tank, wherein the body is provided with a walking mechanism, and a rotating seat which can rotate in the horizontal direction is provided above the body, and the gas tank is provided on the rotating seat and can rotate in the vertical direction;

[0013] The gas tank stores low-temperature nitrogen, a valve plate is installed inside the gas tank, an air pump is fixedly installed on one side of the gas tank, and a protective disk and a central nozzle are fixedly installed on the other side of the gas tank. The central nozzle can spray water to extinguish fire. Multiple groups of annular chambers are arranged inside the protective disk, and one side of each group of annular chambers is respectively provided with air blowing ports in different directions;

[0014] A plurality of gas injection pipes are fixedly mounted on the gas tank, a first solenoid valve is fixedly mounted on each of the plurality of gas injection pipes, and the plurality of gas injection pipes are respectively matched with the plurality of annular chambers;

[0015] A thermal imaging camera is fixedly installed on the gas tank.

[0016] In one or more embodiments of the present invention, the multiple groups of annular chambers include a first cavity, a second cavity, a third cavity and a fourth cavity in sequence, and the air outlets on one side of the first cavity and the second cavity are both inclined toward the side away from the central nozzle, and the inclination angle of the air outlet on the side of the first cavity is greater than the inclination angle of the air outlet on the side of the second cavity, the air outlet on the side of the third cavity is horizontally oriented, and the air outlet on the side of the fourth cavity is inclined toward the side close to the central nozzle.

[0017] In one or more embodiments of the present invention, an air suction disk is fixedly mounted on one end of the gas tank away from the protective disk, and a filter is fixedly mounted on one side of the air suction disk;

[0018] An inlet pipe is fixedly installed between the input end of the air pump and the air suction disk, and an outlet pipe is fixedly installed between the output end of the air pump and the gas tank;

[0019] A second solenoid valve is fixedly installed on the outlet pipe.

[0020] In one or more embodiments of the present invention, a sealing ring is fixedly mounted on the outer wall of the valve plate.

[0021] In one or more embodiments of the present invention, an electric three-way valve is fixedly mounted on the gas tank, and the electric three-way valve includes an output end and two input ends;

[0022] The output end of the electric three-way valve is connected to the central nozzle. A water pipe is fixedly installed on one output end of the electric three-way valve. The end of the water pipe away from the electric three-way valve is connected to the water supply pipeline.

[0023] In one or more embodiments of the present invention, an electromagnetic fixing joint is fixedly installed at one end of the water pipe close to the electric three-way valve, and a fixing seat is fixedly installed at one end of the electric three-way valve, and the electromagnetic fixing joint matches the fixing seat.

[0024] In one or more embodiments of the present invention, a hose reel is installed below the water supply pipeline, and the water delivery pipe is wound on the hose reel.

[0025] In one or more embodiments of the present invention, a branch pipe is fixedly installed on the other output end of the electric three-way valve, a water storage chamber is provided inside the body, and the branch pipe extends into the water storage chamber;

[0026] A water pump is fixedly installed on the branch pipe.

[0027] In one or more embodiments of the present invention, the walking mechanism includes an industrial camera and a pair of crawlers. The industrial camera is fixedly mounted on one end of the machine body, and the pair of crawlers are respectively mounted on both sides of the machine body.

[0028] In one or more embodiments of the present invention, an electric push rod is rotatably connected to the rotating seat, and a telescopic end of the electric push rod is rotatably connected to the gas tank.

[0029] Compared with the existing technology, the intelligent fire extinguishing and protection system for mines of the present invention uses optical fiber temperature measurement technology to accurately locate the fire point in the goaf. It can enter the goaf through the mobile fire extinguishing equipment, use nitrogen spray to isolate the fire point and cool the surrounding area to prevent the spread of fire. Combined with water spray fire extinguishing, it can achieve safe and intelligent fire extinguishing and protection.

[0030] While spraying nitrogen, the gas inside the goaf can be extracted, thereby reducing the oxygen and gas concentration in the goaf, achieving flame retardancy and explosion prevention, and improving fire extinguishing protection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] Figure 1 This is a schematic structural diagram of an intelligent fire extinguishing protection system for mines in one embodiment of the present invention;

[0033] Figure 2 A walking fire extinguishing equipment structure of a mine intelligent fire extinguishing protection system in one embodiment of the present invention Figure 1 ;

[0034] Figure 3 A walking fire extinguishing equipment structure of a mine intelligent fire extinguishing protection system in one embodiment of the present invention Figure 2 ;

[0035] Figure 4 A partial cross-sectional view of a walking fire extinguishing device of an intelligent fire extinguishing protection system for mining in one embodiment of the present invention;

[0036] Figure 5 A side cross-sectional view of a protection plate of an intelligent fire extinguishing protection system for mining according to one embodiment of the present invention;

[0037] Figure 6 An intelligent fire extinguishing protection system for mines in one embodiment of the present invention Figure 2 Enlarged view of point A in the middle;

[0038] Figure 7 An intelligent fire extinguishing protection system for mines in one embodiment of the present invention Figure 3 Enlarged view of point B in the middle;

[0039] Figure 8 This is a cross-sectional schematic diagram of a first working state of a protection disk of an intelligent fire extinguishing protection system for mines in one embodiment of the present invention;

[0040] Figure 9 This is a cross-sectional schematic diagram of a second working state of a protection disk of an intelligent fire extinguishing protection system for mining in one embodiment of the present invention.

[0041] Description of main reference numerals:

[0042] 10. Machine body; 11. Tracks; 12. Water storage chamber; 20. Rotating seat; 21. Electric push rod; 30. Gas tank; 31. Valve plate; 311. Sealing ring; 40. Thermal imaging camera; 50. Protective plate; 51. Gas injection pipe; 511. First solenoid valve; 52. First cavity; 53. Second cavity; 54. Third cavity; 55. Fourth cavity; 56. Air blowing port; 60. Center nozzle; 70. Water pipe; 71. Branch pipe 711. Water pump; 72. Electromagnetic fixed joint; 73. Electric three-way valve; 731. Fixed seat; 80. Industrial camera; 90. Suction plate; 91. Air pump; 92. Inlet pipe; 93. Outlet pipe; 931. Second solenoid valve; 94. Filter; 100. Conveyor belt; 110. Temperature-sensing optical cable for mining; 120. Water supply pipeline; 121. Electric ball valve; 122. Sprinkler nozzle; 130. Hose reel; 140. Temperature measuring host. DETAILED DESCRIPTION

[0043] 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.

[0044] like Figures 1-9 As shown, an intelligent fire extinguishing protection system for mining in one embodiment of the present invention is used for intelligent fire extinguishing protection of a conveyor belt 100, goaf and high-voltage cables, including an optical fiber distributed temperature measurement system, a sprinkler fire extinguishing system and a walking fire extinguishing device.

[0045] like Figure 1 As shown, the optical fiber distributed temperature measurement system includes but is not limited to a mine temperature-sensing optical cable 110 and a temperature measurement host 140, and also includes a coal mine smoke sensor, an intrinsically safe thermal imaging camera, a mine intrinsically safe carbon monoxide sensor, a mine intrinsically safe pressure sensor, a mine intrinsically safe flame sensor, etc. The mine temperature-sensing optical cable 110 is distributed in the goaf, the belt conveyor 100 and the high-voltage cable. One end of the mine temperature-sensing optical cable 110 is connected to the temperature measurement host 140. Through the cooperation of the mine temperature-sensing optical cable 110 and the temperature measurement host 140, fire monitoring of the belt conveyor 100, the goaf and the high-voltage cable is realized and the fire disaster potential points are located.

[0046] Among them, the mine temperature-sensing optical cable 110 is used as a temperature sensor, which integrates computer, optical fiber communication, optical fiber sensing, photoelectric control and other technologies, and has the advantages of being intrinsically safe, corrosion-resistant, and not subject to electromagnetic interference.

[0047] The sprinkler fire extinguishing system includes a water supply pipeline 120, which is arranged above the conveyor belt 100. Multiple sets of electric ball valves 121 and multiple sets of sprinkler nozzles 122 are fixedly installed on the water supply pipeline 120. The multiple sets of sprinkler nozzles 122 are distributed in a zoned manner, with each set of electric ball valves 121 controlling the sprinkler nozzles 122 in a zone, achieving zoned control of the sprinkler and reducing energy consumption.

[0048] like Figure 2 and Figure 3 As shown, the mobile fire-fighting device includes a body 10 and a gas tank 30. The body 10 is equipped with a walking mechanism, which includes an industrial camera 80 and a pair of tracks 11. The industrial camera 80 is fixedly mounted at one end of the body 10, and the pair of tracks 11 are respectively mounted on either side of the body 10. The pair of tracks 11 and the industrial camera 80 work together to enable the body 10 to intelligently move in the mine, thereby achieving intelligent fire extinguishing protection.

[0049] Specifically, when the mine temperature-sensing optical cable 110 detects the presence of a fire point or a fire hazard point in the goaf, the mobile fire-fighting equipment can automatically enter the goaf for fire-fighting protection, eliminating the need for manual fire-fighting. At the same time, it is convenient to carry out accurate and flexible fire-fighting protection at any part of the goaf.

[0050] The top of the body 10 is rotatably connected to a rotating base 20, which can be driven horizontally by a motor. A gas tank 30 is rotatably connected to the rotating base 20. A motorized push rod 21 is rotatably connected to one side of the rotating base 20. The telescopic end of the motorized push rod 21 is rotatably connected to one side of the gas tank 30. By controlling the telescopic end of the motorized push rod 21, the gas tank 30 can be driven to rotate vertically. The horizontally and vertically rotatable gas tank 30 enables automatic and flexible precise fire extinguishing.

[0051] A thermal imaging camera 40 is fixedly installed on the top of the gas tank 30. The thermal imaging camera 40 can flexibly monitor the temperature. When a temperature alarm occurs, the system will automatically control the electric ball valve 121 to cool down and extinguish the fire at the designated alarm location.

[0052] like Figure 4 As shown, the gas tank 30 stores cryogenic nitrogen gas. A valve plate 31 is mounted within the gas tank 30. The valve plate 31 is movable within the gas tank 30, thereby squeezing and pressurizing the cryogenic nitrogen gas, giving it the kinetic energy to eject outward. An air pump 91 is fixedly mounted on one side of the gas tank 30, and is capable of drawing external gas into the gas tank 30.

[0053] A sealing ring 311 is fixedly mounted on the outer wall of the valve plate 31 . The sealing ring 311 can be in close contact with the inner wall of the gas tank 30 to ensure sealing between the valve plate 31 and the gas tank 30 .

[0054] Specifically, when the suction disk 90 draws external air and injects it into the gas tank 30, the pressure on one side of the valve plate 31 will gradually increase. When the pressure on one side of the valve plate 31 is greater than the pressure of the low-temperature nitrogen on the other side, the valve plate 31 will move toward the side of the low-temperature nitrogen, thereby squeezing the low-temperature nitrogen and giving the low-temperature nitrogen kinetic energy to spray outward.

[0055] like Figure 2 and Figure 5 As shown, a protective plate 50 and a central nozzle 60 are fixedly installed on the other side of the gas tank 30. The central nozzle 60 is located at the center position of one side of the gas tank 30. When the thermal imaging camera 40 detects a fire or a fire hazard, the central nozzle 60 can spray water to cool down and extinguish the fire.

[0056] Four groups of annular chambers are provided inside the protective plate 50. One side of the four groups of annular chambers is respectively provided with air blowing ports 56 in different directions. Closed nitrogen walls with different ranges can be sprayed out through the air blowing ports 56 in different directions to isolate the fire point. At the same time, low-temperature nitrogen can be used to flame retard and cool the fire point, effectively preventing the fire from spreading.

[0057] Specifically, the four groups of annular chambers include a first cavity 52, a second cavity 53, a third cavity 54, and a fourth cavity 55. The air inlets 56 on the side of the first cavity 52 and the second cavity 53 are both inclined toward the side away from the central nozzle 60, and the inclination angle of the air inlets 56 on the side of the first cavity 52 is greater than the inclination angle of the air inlets 56 on the side of the second cavity 53. In other words, the range of the closed nitrogen wall ejected through the air inlets 56 on the side of the first cavity 52 is greater than the range of the closed nitrogen wall ejected through the air inlets 56 on the side of the second cavity 53. Both are suitable for large-area fire points. Figure 9 shown.

[0058] The blowing port 56 on one side of the third cavity 54 is horizontally oriented and can eject a closed nitrogen wall with the same diameter as the blowing port 56 on one side of the third cavity 54, which is suitable for a fire point of medium size; the blowing port 56 on one side of the fourth cavity 55 is inclined toward the side close to the central nozzle 60, that is, the blowing port 56 on one side of the fourth cavity 55 can eject a closed nitrogen wall with a smaller range, which is suitable for a fire point of small area. Figure 8 shown.

[0059] like Figure 5 As shown, four groups of gas injection pipes 51 are fixedly installed on the gas tank 30, and a first solenoid valve 511 is fixedly installed on each of the four groups of gas injection pipes 51. The four groups of gas injection pipes 51 are respectively connected to the interior of the first cavity 52, the second cavity 53, the third cavity 54 and the fourth cavity 55. The low-temperature nitrogen inside the gas tank 30 can be injected into the interior of the first cavity 52, the second cavity 53, the third cavity 54 and the fourth cavity 55 through the four groups of gas injection pipes 51.

[0060] Specifically, after the machine body 10 moves into the goaf, the specific location of the fire point in the goaf can be monitored by the thermal imaging camera 40, and the range of the fire point can be determined. When the range of the fire point is large, the corresponding first solenoid valve 511 can be controlled to open, so that the gas injection pipe 51 connected to the first cavity 52 or the second cavity 53 is opened, and the low-temperature nitrogen inside the gas tank 30 can enter the first cavity 52 or the second cavity 53 through the gas injection pipe 51, and finally be ejected through the blowing port 56 on the side of the first cavity 52 or the second cavity 53 to form a large-scale closed nitrogen wall to isolate the large-scale fire point. When the range of the fire point is small, the gas injection pipe 51 connected to the fourth cavity 55 is opened, so that the blowing port 56 on the side of the fourth cavity 55 can eject to form a small-scale closed nitrogen wall to accurately isolate the small-scale fire point.

[0061] By isolating the fire point through a closed nitrogen wall, the fire point can be effectively prevented from spreading outward, and then water is sprayed through the central nozzle 60 to extinguish the fire, thereby achieving rapid and effective fire extinguishing.

[0062] It is worth noting that the nitrogen wall can not only isolate the fire point, but also cool down the area around the fire point. By utilizing the flame retardant properties of nitrogen, the oxygen and gas concentrations around the fire point can be diluted, effectively retarding and preventing explosions, thereby improving fire extinguishing and protection performance.

[0063] What is more noteworthy is that the air pump 91 drives the low-temperature nitrogen to be ejected by extracting the air in the goaf. While ejecting the low-temperature nitrogen, the air inside the goaf is sucked into the gas tank 30, thereby collecting and storing the air inside the goaf, thereby greatly reducing the gas concentration in the goaf, preventing the gas concentration from being too high and causing an explosion, and facilitating safe fire extinguishing.

[0064] An air suction disk 90 is fixedly mounted on one end of the gas tank 30 away from the protective disk 50, and a filter screen 94 is fixedly mounted on one side of the air suction disk 90. ​​The filter screen 94 can be an air filter to filter impurities in the air and prevent impurities in the air from entering the interior of the gas tank 30 and causing pollution.

[0065] An inlet pipe 92 is fixedly installed between the input end of the air pump 91 and the air suction disk 90, and an outlet pipe 93 is fixedly installed between the output end of the air pump 91 and the gas tank 30. The air drawn from the goaf by the air pump 91 can be filtered through the filter 94 before entering the interior of the air suction disk 90 and then injected into the interior of the gas tank 30 through the inlet pipe 92 and the outlet pipe 93 in sequence.

[0066] like Figure 7 As shown, a second solenoid valve 931 is fixedly installed on the outlet pipe 93, and the closing of the outlet pipe 93 can be controlled by the second solenoid valve 931 to achieve precise control.

[0067] like Figure 2 and Figure 6 As shown, an electric three-way valve 73 is fixedly installed on the gas tank 30. The electric three-way valve 73 includes an output end and two input ends. The output end of the electric three-way valve 73 is connected to the central nozzle 60, and water can be supplied to the central nozzle 60 through the electric three-way valve 73.

[0068] A water pipe 70 is fixedly mounted to one output end of the electric three-way valve 73. The end of the water pipe 70, remote from the electric three-way valve 73, is connected to the water supply line 120. In other words, the water source for the central sprinkler 60 comes from the water supply line 120. A hose reel 130 is mounted below the water supply line 120, on which the water pipe 70 is wound. When the machine body 10, carrying the gas tank 30, enters the goaf for firefighting, the water pipe 70 can be automatically released by dragging it from the hose reel 130, ensuring a continuous water supply through the water pipe 70.

[0069] An electromagnetic fixing joint 72 is fixedly installed at one end of the water supply pipe 70 close to the electric three-way valve 73, and a fixing seat 731 is fixedly installed at one end of the electric three-way valve 73. The electromagnetic fixing joint 72 and the fixing seat 731 are fixed in a manner that combines plug-in positioning and electromagnetic adsorption, and can be automatically disconnected to prevent the water supply pipe 70 from getting stuck or being of insufficient length and affecting the walking fire extinguishing of the body 10.

[0070] A branch pipe 71 is fixedly mounted to the other output end of the electric three-way valve 73. A water storage chamber 12 is provided within the housing 10. This chamber stores a certain amount of temporary water, allowing for a temporary water supply to the central nozzle 60 after the water supply pipe 70 is disconnected. Branch pipe 71 extends into the chamber 12 and is fixedly mounted with a water pump 711. This pump 711 pumps water from the chamber 12 and supplies it to the central nozzle 60.

[0071] Specifically, when the body 10 is moving and extinguishing a fire, if the water pipe 70 is stuck or is insufficient in length, the electromagnetic fixing joint 72 is automatically powered off, causing the electromagnetic fixing joint 72 to lose its fixation and automatically fall off. At this time, the water supply pipeline is switched through the electric three-way valve 73, so that the water pump 711 draws water from the water storage chamber 12 and supplies it to the central nozzle 60, thereby realizing spray fire extinguishing and ensuring that the fire protection system can operate stably and reliably.

[0072] During use, the temperature of the conveyor belt 100, the goaf and the high-voltage cable is monitored by the distributed mining temperature-sensing optical cables 110. When the local temperature of the conveyor belt 100 or the high-voltage cable is abnormal, a sprinkler fire extinguishing system can be deployed for fire extinguishing protection. Since fire may occur at any position in the goaf, the machine body 10 is equipped with a gas tank 30 to enter the goaf. By controlling the gas tank 30 to rotate horizontally or vertically, the protective disk 50 is aligned with the fire point, and then the air pump 91 is started to extract the air from the goaf while driving the valve plate 31 to move inside the gas tank 30, pushing the low-temperature nitrogen to be ejected through the corresponding air port 56, and forming a closed nitrogen wall of corresponding size according to the size of the fire point range. After isolating the fire point, the central nozzle 60 is used for spraying to extinguish the fire, thereby realizing fire extinguishing protection at any position in the goaf.

[0073] The intelligent fire extinguishing and protection system for mines of the present invention uses optical fiber temperature measurement technology to accurately locate the ignition point in the goaf. The system can enter the goaf through a walking fire extinguishing device, and use nitrogen spray to isolate the ignition point and cool the surrounding area to prevent the spread of the fire. Combined with water spraying, it can achieve safe and intelligent fire extinguishing and protection.

[0074] While spraying nitrogen, the gas inside the goaf can be extracted, thereby reducing the oxygen and gas concentration in the goaf, achieving flame retardancy and explosion prevention, and improving fire extinguishing protection performance.

[0075] 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.

[0076] 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 intelligent fire extinguishing protection system for mines, characterized in that: include: An optical fiber distributed temperature measurement system, comprising a mine-used temperature-sensing optical cable and a temperature measurement host. The mine-used temperature-sensing optical cable is distributed in the goaf and on the belt conveyor, and one end of the mine-used temperature-sensing optical cable is connected to the temperature measurement host. A sprinkler fire extinguishing system, comprising a water supply pipeline arranged above the belt conveyor, on which are fixedly installed multiple sets of electric ball valves and multiple sets of sprinkler nozzles; A walking fire extinguishing device, comprising a body and a gas tank, wherein the body is provided with a walking mechanism, a rotating seat which can rotate in the horizontal direction is provided above the body, and the gas tank is provided on the rotating seat and can rotate in the vertical direction; The gas tank stores low-temperature nitrogen, a valve plate is installed inside the gas tank, an air pump is fixedly installed on one side of the gas tank, and a protective disk and a central nozzle are fixedly installed on the other side of the gas tank. The central nozzle can spray water to extinguish fire. Multiple groups of annular chambers are arranged inside the protective disk, and one side of each group of annular chambers is respectively provided with air blowing ports in different directions; A plurality of gas injection pipes are fixedly mounted on the gas tank, a first solenoid valve is fixedly mounted on each of the plurality of gas injection pipes, and the plurality of gas injection pipes are respectively matched with the plurality of annular chambers; A thermal imaging camera is fixedly installed on the gas tank.

2. The intelligent fire extinguishing protection system for mines according to claim 1, characterized in that: The multiple groups of annular chambers include a first cavity, a second cavity, a third cavity and a fourth cavity in sequence. The air outlets on one side of the first cavity and the second cavity are both inclined toward the side away from the central nozzle, and the inclination angle of the air outlet on the first cavity side is greater than the inclination angle of the air outlet on the second cavity side. The air outlet on the side of the third cavity is horizontally oriented, and the air outlet on the side of the fourth cavity is inclined toward the side close to the central nozzle.

3. The intelligent fire extinguishing protection system for mines according to claim 1, characterized in that: An air suction disc is fixedly mounted on one end of the gas tank away from the protective disc, and a filter is fixedly mounted on one side of the air suction disc; An inlet pipe is fixedly installed between the input end of the air pump and the air suction disk, and an outlet pipe is fixedly installed between the output end of the air pump and the gas tank; A second solenoid valve is fixedly installed on the outlet pipe.

4. The intelligent fire extinguishing protection system for mines according to claim 1, characterized in that: A sealing ring is fixedly installed on the outer wall of the valve plate.

5. The intelligent fire extinguishing protection system for mines according to claim 1, characterized in that: An electric three-way valve is fixedly installed on the gas tank, and the electric three-way valve includes an output end and two input ends; The output end of the electric three-way valve is connected to the central nozzle, and a water pipe is fixedly installed on one input end of the electric three-way valve. The end of the water pipe away from the electric three-way valve is connected to the water supply pipeline.

6. The intelligent fire extinguishing protection system for mines according to claim 5, characterized in that: An electromagnetic fixing joint is fixedly installed on one end of the water delivery pipe close to the electric three-way valve, and a fixing seat is fixedly installed on one end of the electric three-way valve, and the electromagnetic fixing joint matches the fixing seat.

7. The intelligent fire extinguishing protection system for mines according to claim 6, characterized in that: A hose reel is installed below the water supply pipeline, and the water delivery pipe is wound on the hose reel.

8. The intelligent fire extinguishing protection system for mines according to claim 5, characterized in that: A branch pipe is fixedly installed at the other input end of the electric three-way valve, a water storage cavity is provided inside the body, and the branch pipe extends into the water storage cavity; A water pump is fixedly installed on the branch pipe.

9. The intelligent fire extinguishing protection system for mines according to claim 1, characterized in that: The walking mechanism includes an industrial camera and a pair of crawlers. The industrial camera is fixedly mounted on one end of the machine body, and the pair of crawlers are respectively mounted on both sides of the machine body.

10. The intelligent fire extinguishing protection system for mines according to claim 1, characterized in that: An electric push rod is rotatably connected to the rotating seat, and a telescopic end of the electric push rod is rotatably connected to the gas tank.

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