Coalfield fire zone capsule type heat energy extraction method

Abstract

This invention belongs to the technical field of thermoelectric conversion equipment, specifically a capsule-type thermal energy extraction method for coalfield fire zones. Addressing the problem that existing coalfield fire zone thermal energy extraction processes mostly require manual deployment, making it inconvenient to automatically deploy high-thermal-conductivity capsules, thus hindering penetration into the fire zone and insufficient capture of thermal energy, the present invention proposes the following solution, comprising the following steps: S1: Preparing an extraction device, which includes a vehicle body. A shell is fixedly installed on the top of the vehicle body, and ventilation openings are provided on both sides of the shell. Dustproof plates are fixedly installed in both ventilation openings. A first and second drilled hole are provided on the bottom inner wall of the shell, and a bracket is fixedly installed on the top of the shell. This invention facilitates the automatic deployment of high-thermal-conductivity capsules during use, enabling deep penetration into the fire zone for sufficient capture of thermal energy. It also has a cleaning function, facilitates continuous extraction operations, and features a simple structure and convenient use.

Description

Technical Field

[0001] This invention relates to the field of thermoelectric conversion equipment technology, and in particular to a capsule-type thermal energy extraction method for coalfield fire zones. Background Technology

[0002] Coalfield fires are a common disaster faced by coal-producing countries worldwide. Coalfield fires not only destroy vast amounts of coal resources and render them unusable, but also generate large quantities of toxic and harmful gases such as CO, CO2, and SO2, as well as harmful chemical substances like mercury and selenium that pollute soil and water resources, causing severe damage to the fragile ecological environment of western China. Coalfield fires involve large volumes of burning coal at high temperatures, containing enormous amounts of heat. Statistics show that approximately 1 billion tons of coal are burned annually worldwide by underground coal fires, generating about 1000 GW of energy, equivalent to 2.5 times the total energy produced by 500 nuclear power plants globally, and exceeding the energy produced by hydroelectric power by nearly 100 GW. Combining heat extraction and remediation in coalfield fire areas—that is, achieving "green" remediation through the extraction and utilization of heat—can organically unify fire control, energy utilization, and environmental protection. Methods for heat extraction from coalfield fire areas mainly include the use of heat-conducting pipelines, heat convection of heat transfer media, thermoelectric power generation technology, and distributed coalfield fire area heat extraction and new power generation technologies.

[0003] Patent document CN109861587B discloses a capsule-type thermal energy extraction device and method for coalfield fire zones, comprising: a thermoelectric generator, a heat transfer device, and a cooling device; the thermoelectric generator is a hollow cylindrical structure with a cold end (81) inside the cylindrical structure and a hot end (82) outside the cylindrical structure; the heat transfer device is used to increase the temperature of the hot end (82), and includes a high thermal conductivity capsule (11) and a medium-temperature heat pipe (9); the cooling device is used to decrease the temperature of the cold end (81), and includes a high thermal conductivity capsule-type heat pipe (5) and heat dissipation fins (2). This invention's device and method are applicable to thermal energy extraction in coalfield fire zones.

[0004] However, the aforementioned patent documents are not convenient for automatically deploying high thermal conductivity capsules during use, which leads to the inability to penetrate deep into the fire zone and make it difficult to fully capture the heat energy of the fire zone. Therefore, we propose a capsule-type heat energy extraction method for coalfield fire zones to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies in the extraction of thermal energy from coalfield fire zones, which mostly require manual deployment and are not convenient for automatic deployment of high thermal conductivity capsules, thus making it difficult to penetrate deep into the fire zone and fully capture the thermal energy. Therefore, this invention proposes a capsule-type thermal energy extraction method for coalfield fire zones.

[0006] The capsule-type thermal energy extraction method for coalfield fire zones provided in this application adopts the following technical solution:

[0007] A method for extracting thermal energy from coalfield fire zones using a capsule-type capsule, comprising the following steps:

[0008] S1: Prepare the extraction device, which includes a vehicle body. A shell is fixedly installed on the top of the vehicle body. Ventilation openings are provided on both sides of the shell. Dustproof plates are fixedly installed in both ventilation openings. A first drill hole and a second drill hole are provided on the bottom inner wall of the shell. A bracket is fixedly installed on the top of the shell. A camera is fixedly installed on the bracket. A water tank is fixedly installed on the bottom inner wall of the shell. A rinsing mechanism is provided in the water tank. A storage battery is connected to the top of the water tank. A first support plate is fixedly installed on one side inner wall of the shell. A second support plate is slidably connected to the first support plate. A translation mechanism is provided on the first support plate. A vertical plate is fixedly installed at the bottom of the second support plate. A first sliding groove is provided on both sides of the vertical plate. A first connecting plate and a second connecting plate are slidably installed in the two first sliding grooves respectively. A lifting mechanism is provided on the first connecting plate and the second connecting plate. A drilling mechanism and a temperature and humidity monitoring mechanism are provided on the first connecting plate and the second connecting plate respectively. A high thermal conductivity capsule is connected to the bottom of the second connecting plate. The high thermal conductivity capsule is connected to the storage battery. A fixed seat is fixedly installed on the top of the second support plate. A switching mechanism is provided on the fixed seat.

[0009] S2: The device is moved to the inside of the coalfield fire zone by the vehicle body, and a power exchange channel is opened on the ground of the coalfield fire zone by the drilling mechanism. The high thermal conductivity capsule is moved above the power exchange channel by the translation mechanism, and the high thermal conductivity capsule is moved into the power exchange channel by the lifting mechanism to extract the thermal energy of the coalfield fire zone. The energy storage battery collects the electrical energy converted from the thermal energy.

[0010] S3: The drilling mechanism is switched to the monitoring mechanism through the switching mechanism. The monitoring mechanism monitors the temperature and humidity inside the fire zone in real time, monitors the fire zone status and heat extraction efficiency. When the heat extraction is completed, the monitoring mechanism and the high thermal conductivity capsule are stored inside the shell through the lifting mechanism.

[0011] S4: Finally, the monitoring unit, high thermal conductivity capsule and drilling unit are rinsed and cleaned by the spraying mechanism, and then the device is moved to the next location by the vehicle to continue extracting heat energy.

[0012] The switching mechanism includes a slider. A third groove is provided on the top of the fixed base, and the slider is slidably installed in the third groove. A fixed plate is fixedly installed on the top of the slider. A third through groove and a sliding hole are provided on the fixed base. The third through groove and the sliding hole are connected. A toothed rod is slidably installed in the sliding hole. One end of the toothed rod is fixedly connected to one side of the first support plate. The toothed rod meshes with a first gear. A second through hole is provided on the inner wall of the top of the third through groove. The second through hole is connected to the third groove. A stud is rotatably installed in the second through hole. The stud is threadedly connected to the slider. One end of the stud is fixedly connected to the first gear. When the second support plate moves horizontally, the second support plate drives the fixed base to move horizontally. The fixed base drives the stud and the first gear to move horizontally. The first gear meshes and rolls on the toothed rod. In turn, the stud drives the slider to move vertically. The slider can drive the fixed plate to move vertically.

[0013] A second gear and a third gear are fixedly installed on the outer side of the first rectangular rod and the outer side of the third screw, respectively. The second gear and the third gear mesh with each other. A fixing cover is fixedly installed on one side of the fixing plate. A second motor is fixedly installed on the bottom inner wall of the fixing cover. The output shaft of the second motor is fixedly connected to one end of the first rectangular rod. A mounting hole is opened at the top of the second through slot. The first rectangular rod is located in the mounting hole. When the fixing plate moves vertically, the fixing plate drives the fixing cover to move vertically. The fixing cover drives the second motor and the first rectangular rod to move vertically. When the first rectangular rod moves vertically to a certain position, the second gear can mesh with the third gear.

[0014] The monitoring mechanism includes a second drill rod and a third rectangular rod, which are rotatably mounted on a second connecting plate and a second support plate, respectively. A third rectangular groove is formed at one end of the second drill rod, and the outer side of the third rectangular rod is slidably connected to the inner wall of the third rectangular groove. A temperature sensor and a humidity sensor are connected to the outer side of the second drill rod. Multiple medium-temperature heat pipes are connected to the bottom of the high thermal conductivity capsule. A thermoelectric generator unit and a cooling section of a cooling device are connected inside the high thermal conductivity capsule. A third sprocket and a fourth sprocket are fixedly mounted on the outer side of the third screw and one end of the third rectangular rod, respectively. The same second chain meshes on the third sprocket and the fourth sprocket. When the third screw rotates, it drives the third sprocket to rotate, which in turn drives the fourth sprocket to rotate via the second chain. The fourth sprocket then drives the third rectangular rod to rotate. The third rectangular rod, in conjunction with the third rectangular groove, can drive the second drill rod to rotate.

[0015] A support rod is fixedly installed inside the fixed cylinder, and a drive shaft is rotatably mounted on the support rod. A turbine is fixedly connected to the outside of the drive shaft. A drive rod is rotatably mounted on the fixed cylinder. A first bevel gear and a second bevel gear are fixedly connected to one end of the drive shaft and one end of the drive rod, respectively. The first bevel gear and the second bevel gear mesh with each other. When water flows through the fixed cylinder, the water pressure drives the turbine to rotate, the turbine drives the drive shaft to rotate, the drive shaft drives the first bevel gear to rotate, and the first bevel gear drives the second bevel gear to rotate.

[0016] The other end of the transmission rod is fixedly connected to a turntable, one side of the turntable is fixedly connected to a guide post, and the outside of the water pipe is fixedly connected to a transmission plate. The transmission plate has a waist-shaped groove, and the guide post is slidably installed in the waist-shaped groove. When the transmission rod rotates, the transmission rod drives the turntable to rotate, and the turntable drives the guide post to make a circular motion. The guide post and the waist-shaped groove can drive the transmission plate to swing back and forth, and then the transmission plate can drive the water pipe to rotate back and forth.

[0017] The rinsing mechanism includes a pump body, which is fixedly installed on the bottom inner wall of the water tank. The pump body's output port is fixedly connected to a first connecting pipe, one end of which is fixedly connected to a fixed cylinder. A second connecting pipe is fixedly connected to the fixed cylinder. A water pipe is rotatably installed on the water tank and rotatably installed inside the second connecting pipe. Multiple nozzles are fixedly connected to the outside of the water pipe. When the pump body is turned on, it can transport water from the water tank to the multiple nozzles through the first connecting pipe, the fixed cylinder, the second connecting pipe, and the water pipe. The multiple nozzles can then rinse the first drill rod, the second drill rod, and the high thermal conductivity capsule, which is beneficial for subsequent continuous extraction operations.

[0018] The drilling mechanism includes a second rectangular rod and a first drill rod. The first drill rod is rotatably mounted on a first connecting plate. One end of the first drill rod has a second rectangular groove. The second rectangular rod is rotatably mounted on a second support plate. The outer side of the second rectangular rod is slidably connected to the inner wall of the second rectangular groove. A first sprocket and a second sprocket are respectively fixedly mounted on the outer side of the second screw and one end of the second rectangular rod. The same first chain meshes on the first sprocket and the second sprocket. When the second screw rotates, the second screw drives the first sprocket to rotate. The first sprocket drives the second sprocket to rotate through the first chain. The second sprocket drives the second rectangular rod to rotate. The second rectangular rod, in conjunction with the second rectangular groove, can drive the first drill rod to rotate.

[0019] The lifting mechanism includes a second screw and a third screw. Two third through holes are opened on the bottom inner wall of the second through groove. The second screw and the third screw are slidably installed in the two third through holes respectively. A first rectangular groove is opened at one end of the second screw. A first rectangular rod is slidably installed in the first rectangular groove. The second screw and the third screw are threadedly connected to the first connecting plate and the second connecting plate respectively. When the second screw and the third screw rotate, the second screw and the third screw can drive the first connecting plate and the second connecting plate to move vertically respectively.

[0020] The translation mechanism includes a first motor, a first through groove and a second sliding groove on a first support plate, a second support plate slidably installed in the second sliding groove, a first motor fixedly installed on one side inner wall of the first through groove, a first through hole on the other side inner wall of the first through groove, a first screw rotatably installed in the first through hole, one end of the first screw being fixedly connected to the output shaft of the first motor, the first screw being threadedly connected to the second support plate, and a second through groove on the second support plate. When the first motor is turned on, the first motor drives the first screw to rotate, and the first screw drives the second support plate to move horizontally.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. This solution, through the installation of a vehicle, can replace manual deployment, moving the device into the coalfield fire zone. This facilitates deep penetration into the fire zone to fully capture the heat energy. By activating the second motor, the second motor drives the first rectangular rod to rotate. The first rectangular rod, in conjunction with the first rectangular groove, drives the second screw to rotate. The second screw drives the first connecting plate and the first drill rod to move vertically. Simultaneously, the first sprocket drives the second sprocket to rotate via the first chain. The second rectangular rod drives the first drill rod to rotate, allowing the first drill rod to drill holes, facilitating the deployment of the high thermal conductivity capsule.

[0023] 2. This solution involves activating the first motor, causing the first screw to move the second support plate horizontally, and the first gear to mesh and roll on the rack. This, in turn, causes the stud to move the slider vertically, and the fixing plate to move the fixing cover and the second motor vertically. The second motor then moves the first rectangular rod vertically. When the first rectangular rod reaches a certain position, it separates from the first rectangular groove, and simultaneously the second gear meshes with the third gear. By activating the second motor again, the second drill rod can be drilled in, and a high thermal conductivity capsule is placed within the opened heat exchange channel. The temperature and humidity sensors on the second drill rod can monitor the coal seam temperature and humidity in real time, thereby achieving the purpose of monitoring the fire zone status and heat extraction efficiency.

[0024] 3. When the pump body is turned on, the pump body delivers water from the water tank to multiple nozzles through the first connecting pipe, the fixed cylinder, the second connecting pipe, and the water pipe. The multiple nozzles can then rinse and clean the first drill rod, the second drill rod, and the exterior of the high thermal conductivity capsule, facilitating subsequent continuous operation and improving extraction efficiency.

[0025] This invention enables the automatic deployment of high thermal conductivity capsules during use, allowing for deep penetration into the fire zone to fully capture heat energy. It also features a cleaning function, facilitates continuous extraction operations, and has a simple structure and is easy to use. Attached Figure Description

[0026] Figure 1This is a schematic diagram of the main structure of the extraction device in the capsule-type thermal energy extraction method for coalfield fire zones proposed in this invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the extraction device shell in the capsule-type thermal energy extraction method for coalfield fire zones proposed in this invention.

[0028] Figure 3 This is a schematic diagram of the vehicle body of the extraction device in the capsule-type thermal energy extraction method for coalfield fire zones proposed in this invention;

[0029] Figure 4 This is a schematic diagram of the translation mechanism in the capsule-type thermal energy extraction method for coalfield fire zones proposed in this invention;

[0030] Figure 5 This is a schematic diagram of the switching mechanism in a capsule-type thermal energy extraction method for coalfield fire zones proposed in this invention;

[0031] Figure 6 This is a schematic diagram of the structure of the mounting cover in the capsule-type thermal energy extraction method for coalfield fire zones proposed in this invention;

[0032] Figure 7 This is a schematic diagram of the lifting mechanism in a capsule-type thermal energy extraction method for coalfield fire zones proposed in this invention;

[0033] Figure 8 This is a schematic diagram of the high thermal conductivity capsule in the capsule-type thermal energy extraction method for coalfield fire zones proposed in this invention;

[0034] Figure 9 This is a schematic diagram of the structure of the first and second drill rods in the capsule-type thermal energy extraction method for coalfield fire zones proposed in this invention.

[0035] Figure 10 This is a schematic diagram of the internal structure of the water tank in the capsule-type thermal energy extraction method for coalfield fire zones proposed in this invention;

[0036] Figure 11 This is a schematic diagram of the fixed cylinder in a capsule-type thermal energy extraction method for coalfield fire zones proposed in this invention;

[0037] Figure 12 This invention proposes a capsule-type thermal energy extraction method for coalfield fire zones. Figure 2 Enlarged structural diagram of section A;

[0038] Figure 13 This invention proposes a capsule-type thermal energy extraction method for coalfield fire zones. Figure 2 Enlarged structural diagram of section B;

[0039] Figure 14This invention proposes a capsule-type thermal energy extraction method for coalfield fire zones. Figure 7 Enlarged structural diagram of section C;

[0040] Figure 15 This invention proposes a capsule-type thermal energy extraction method for coalfield fire zones. Figure 10 A magnified structural diagram of part D in the middle.

[0041] Reference numerals: 1. Vehicle body; 2. Shell; 3. Dustproof plate; 4. Bracket; 5. Camera; 6. First drill hole; 7. Second drill hole; 8. Water tank; 9. Energy storage battery; 10. First support plate; 11. First through groove; 12. Second sliding groove; 13. Second support plate; 14. Second through groove; 15. First screw; 16. First motor; 17. Fixing seat; 18. Third sliding groove; 19. Sliding block; 20. Fixing plate; 21. Fixing cover; 22. Second motor; 23. First rectangular rod; 24. Third through groove; 25. Sliding hole; 26. Gear rack; 27. First gear; 28. Stud; 29. ​​Second rectangular rod; 30. Third rectangular rod; 31. Second screw; 32. Third screw; 33. First connecting plate; 34. Second connecting plate; 35. Vertical plate; 36. First sliding groove; 37. High thermal conductivity capsule; 38. Medium-temperature heat pipe; 39. Thermoelectric generator unit; 40. Cooling section of cooling device; 41. First drill rod; 42. Second drill rod; 43. Temperature sensor; 44. Humidity sensor; 45. Second rectangular groove; 46. Third rectangular groove; 47. Second gear; 48. Third gear; 49. First sprocket; 50. First chain; 51. Second sprocket; 52. Third sprocket; 53. Second chain; 54. Fourth sprocket; 55. Pump body; 56. First connecting pipe; 57. Fixed cylinder; 58. Water pipe; 59. Nozzle; 60. Transmission plate; 61. Turbine; 62. Transmission shaft; 63. Support rod; 64. First bevel gear; 65. Second bevel gear; 66. Transmission rod; 67. Turntable; 68. Waist-shaped groove; 69. Guide post; 70. Second connecting pipe. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Example

[0043] Reference Figures 1-15 A method for extracting thermal energy from coalfield fire zones using capsules, comprising the following steps:

[0044] S1: Prepare the extraction device, which includes a vehicle body 1. A housing 2 is fixedly installed on the top of the vehicle body 1. Ventilation openings are provided on both sides of the housing 2, and dustproof plates 3 are fixedly installed in both ventilation openings. A first drilled hole 6 and a second drilled hole 7 are provided on the bottom inner wall of the housing 2. A bracket 4 is fixedly installed on the top of the housing 2, and a camera 5 is fixedly installed on the bracket 4. A water tank 8 is fixedly installed on the bottom inner wall of the housing 2. A rinsing mechanism is provided inside the water tank 8, and a storage battery 9 is connected to the top of the water tank 8. A first support plate 10 is fixedly installed on one side inner wall of the housing 2, and a second support plate 13 is slidably connected to the first support plate 10. The second support plate 13 is equipped with a translation mechanism. A vertical plate 35 is fixedly installed on the bottom of the second support plate 13. A first sliding groove 36 is opened on both sides of the vertical plate 35. A first connecting plate 33 and a second connecting plate 34 are slidably installed in the two first sliding grooves 36 respectively. A lifting mechanism is provided on the first connecting plate 33 and the second connecting plate 34. A drilling mechanism and a temperature and humidity monitoring mechanism are provided on the first connecting plate 33 and the second connecting plate 34 respectively. A high thermal conductivity capsule 37 is connected to the bottom of the second connecting plate 34. The high thermal conductivity capsule 37 is connected to the energy storage battery 9. A fixed seat 17 is fixedly installed on the top of the second support plate 13. A switching mechanism is provided on the fixed seat 17.

[0045] S2: The device is moved to the inside of the coalfield fire zone by the vehicle body 1, and a power exchange channel is opened on the ground of the coalfield fire zone by the drilling mechanism. The high thermal conductivity capsule 37 is moved above the power exchange channel by the translation mechanism, and the high thermal conductivity capsule 37 is moved into the inside of the power exchange channel by the lifting mechanism to extract the thermal energy of the coalfield fire zone. The energy storage battery 9 collects the electrical energy converted from the thermal energy.

[0046] S3: The drilling mechanism is switched to the monitoring mechanism through the switching mechanism. The monitoring mechanism monitors the temperature and humidity inside the fire zone in real time, monitors the fire zone status and heat extraction efficiency. When the heat extraction is completed, the monitoring mechanism and the high thermal conductivity capsule 37 are stored inside the shell 2 through the lifting mechanism.

[0047] S4: Finally, the monitoring mechanism, high thermal conductivity capsule 37 and drilling mechanism are rinsed and cleaned by the spraying mechanism, and then the device is moved to the next location by the vehicle body 1 to continue extracting heat energy.

[0048] Reference Figure 4 , Figure 5 and Figure 12The translation mechanism includes a first motor 16. A first support plate 10 has a first through groove 11 and a second sliding groove 12. A second support plate 13 is slidably installed in the second sliding groove 12. The first motor 16 is fixedly installed on one side of the inner wall of the first through groove 11. A first through hole is opened on the other side of the inner wall of the first through groove 11. A first screw 15 is rotatably installed in the first through hole. One end of the first screw 15 is fixedly connected to the output shaft of the first motor 16. The first screw 15 is threadedly connected to the second support plate 13. A second through groove 14 is opened on the second support plate 13. When the first motor 16 is turned on, the first motor 16 drives the first screw 15 to rotate, and the first screw 15 drives the second support plate 13 to move horizontally. The switching mechanism includes a slider 19. A third sliding groove 18 is opened on the top of the fixed seat 17. The slider 19 is slidably installed in the third sliding groove 18. The top of the slider 19 is fixedly installed in the third sliding groove 18. The system is equipped with a fixed plate 20. The fixed base 17 has a third through groove 24 and a sliding hole 25. The third through groove 24 and the sliding hole 25 are connected. A toothed rod 26 is slidably installed in the sliding hole 25. One end of the toothed rod 26 is fixedly connected to one side of the first support plate 10. The toothed rod 26 meshes with a first gear 27. A second through hole is opened on the top inner wall of the third through groove 24. The second through hole is connected to the third sliding groove 18. A stud 28 is rotatably installed in the second through hole. The stud 28 is threadedly connected to the slider 19. One end of the stud 28 is fixedly connected to the first gear 27. When the second support plate 13 moves horizontally, the second support plate 13 drives the fixed base 17 to move horizontally. The fixed base 17 drives the stud 28 and the first gear 27 to move horizontally. The first gear 27 meshes and rolls on the toothed rod 26. In turn, the stud 28 drives the slider 19 to move vertically. The slider 19 can drive the fixed plate 20 to move vertically.

[0049] Reference Figures 6-9 , Figures 13-14A second gear 47 and a third gear 48 are fixedly installed on the outer side of the first rectangular rod 23 and the outer side of the third screw 32, respectively. The second gear 47 and the third gear 48 mesh with each other. A fixing cover 21 is fixedly installed on one side of the fixing plate 20. A second motor 22 is fixedly installed on the bottom inner wall of the fixing cover 21. The output shaft of the second motor 22 is fixedly connected to one end of the first rectangular rod 23. A mounting hole is opened at the top of the second through slot 14. The first rectangular rod 23 is located in the mounting hole. When the fixing plate 20 moves vertically, the fixing plate 20 drives the fixing cover 21 to move vertically. The fixing cover 21 drives the second motor 22 and the first rectangular rod 23 to move vertically. When the first rectangular rod 23 moves vertically to a certain position, the second gear 47 can mesh with the third gear 48. The monitoring mechanism includes a second drill rod 42 and a third rectangular rod 30, which are rotatably mounted on a second connecting plate 34 and a second support plate 13, respectively. A third rectangular groove 46 is formed at one end of the second drill rod 42, and the outer side of the third rectangular rod 30 is slidably connected to the inner wall of the third rectangular groove 46. A temperature sensor 43 and a humidity sensor 44 are connected to the outer side of the second drill rod 42. Multiple medium-temperature heat pipes 38 are connected to the bottom of a high thermal conductivity capsule 37. A thermoelectric generator unit 39 and a cooling section 40 are connected inside the high thermal conductivity capsule 37. The high thermal conductivity capsule 37, the multiple medium-temperature heat pipes 38, the thermoelectric generator unit 39, and the cooling section 40 all adopt the design disclosed in patent document CN109861587B. The specific structure and connection method of the high thermal conductivity capsule, multiple medium-temperature heat pipes, thermoelectric generator unit, and cooling section of the cooling device have been disclosed and will not be repeated here. A third sprocket 52 and a fourth sprocket 54 are fixedly installed on the outer side of the third screw 32 and one end of the third rectangular rod 30, respectively. The same second chain 53 meshes with the third sprocket 52 and the fourth sprocket 54. When the third screw 32 rotates, it drives the third sprocket 52 to rotate. The third sprocket 52 drives the fourth sprocket 54 to rotate via the second chain 53. The fourth sprocket 54 drives the third rectangular rod 30 to rotate. The third rectangular rod 30, in conjunction with the third rectangular groove 46, can drive the second drill rod 42 to rotate. The drilling mechanism includes a second rectangular rod 29 and a first drill rod 41. The first drill rod 41 rotates... The first drill rod 41 is rotatably mounted on the first connecting plate 33. A second rectangular groove 45 is formed at one end of the first drill rod 41. A second rectangular rod 29 is rotatably mounted on the second support plate 13. The outer side of the second rectangular rod 29 is slidably connected to the inner wall of the second rectangular groove 45. A first sprocket 49 and a second sprocket 51 are respectively fixedly mounted on the outer side of the second screw 31 and one end of the second rectangular rod 29. The same first chain 50 meshes with the first sprocket 49 and the second sprocket 51. When the second screw 31 rotates, it drives the first sprocket 49 to rotate. The first sprocket 49 then drives the second sprocket 51 to rotate via the first chain 50. The second sprocket 51 drives the second rectangular rod 29 to rotate. The second rectangular rod 29, in conjunction with the second rectangular groove 45, can drive the first drill rod 41 to rotate.The lifting mechanism includes a second screw 31 and a third screw 32. Two third through holes are formed on the bottom inner wall of the second through groove 14. The second screw 31 and the third screw 32 are slidably installed in the two third through holes, respectively. A first rectangular groove is formed at one end of the second screw 31, and a first rectangular rod 23 is slidably installed in the first rectangular groove. The second screw 31 and the third screw 32 are threadedly connected to the first connecting plate 33 and the second connecting plate 34, respectively. When the second screw 31 and the third screw 32 rotate, they can respectively drive the first connecting plate 33 and the second connecting plate 34 to move vertically.

[0050] Reference Figure 10 , Figure 11 and Figure 15 The flushing mechanism includes a pump body 55, which is fixedly installed on the bottom inner wall of the water tank 8. The output port of the pump body 55 is fixedly connected to a first connecting pipe 56. One end of the first connecting pipe 56 is fixedly connected to a fixed cylinder 57. A second connecting pipe 70 is fixedly connected to the fixed cylinder 57. A water pipe 58 is rotatably installed on the water tank 8, and is rotatably installed inside the second connecting pipe 70. Multiple nozzles 59 are fixedly connected to the outside of the water pipe 58. When the pump body 55 is turned on, it can transport water from the water tank 8 to the multiple nozzles 59 through the first connecting pipe 56, the fixed cylinder 57, the second connecting pipe 70, and the water pipe 58. The multiple nozzles 59 can then flush the first drill rod 41, the second drill rod 42, and the high thermal conductivity capsule 37, facilitating subsequent continuous extraction operations. A support rod 63 is fixedly installed inside the fixed cylinder 57. A drive shaft 62 is rotatably installed on the support rod 63. A turbine 61 is fixedly connected to the outside of the drive shaft 62. A turbine 61 is rotatably installed on the fixed cylinder 57. One end of the transmission rod 66 and the transmission shaft 62 are respectively fixedly connected to a first bevel gear 64 and a second bevel gear 65. The first bevel gear 64 and the second bevel gear 65 mesh with each other. When water flows through the fixed cylinder 57, the water pressure drives the turbine 61 to rotate. The turbine 61 drives the transmission shaft 62 to rotate. The transmission shaft 62 drives the first bevel gear 64 to rotate. The first bevel gear 64 drives the second bevel gear 65 to rotate. The other end of the transmission rod 66 is fixedly connected to a turntable 67. A guide post 69 is fixedly connected to one side of the turntable 67. A transmission plate 60 is fixedly connected to the outside of the water pipe 58. A waist-shaped groove 68 is opened on the transmission plate 60. The guide post 69 is slidably installed in the waist-shaped groove 68. When the transmission rod 66 rotates, the transmission rod 66 drives the turntable 67 to rotate. The turntable 67 drives the guide post 69 to make a circular motion. The guide post 69 and the waist-shaped groove 68 cooperate to drive the transmission plate 60 to swing back and forth. In turn, the transmission plate 60 can drive the water pipe 58 to rotate back and forth.

[0051] The implementation principle in this embodiment is as follows: During use, the device is moved to the designated extraction location in the coalfield fire area via the vehicle body 1. The vehicle can be remotely operated via the camera 5. Then, the second motor 22 is activated, driving the first rectangular rod 23 to rotate. The first rectangular rod 23, in conjunction with the first rectangular groove, drives the second screw 31 to rotate. The second screw 31 drives the first connecting plate 33 to move vertically downwards, which in turn drives the first drill rod 41 to move vertically downwards. Simultaneously, the second screw 31 drives the first sprocket 49 to rotate. The first sprocket 49, through the first chain 50, drives the second sprocket 51 to rotate. The second sprocket 51 drives the second rectangular rod 29 to rotate, and the second rectangular rod 29, in conjunction with the second rectangular groove 45, drives the first drill rod 41 to rotate. The first drill rod 41 can drill a transducer channel in the fire zone. When drilling is complete, the second motor 22 is turned on to reverse and the first drill rod 41 is stored in the housing 2. Then the first motor 16 is turned on, and the first motor 16 drives the first screw 15 to rotate. The first screw 15 drives the second support plate 13 to move horizontally to the right. The second support plate 13 drives the second drill rod 42 and the high thermal conductivity capsule 37 to move horizontally. When the second drill rod 42 and the high thermal conductivity capsule 37 move directly above the second borehole 7 and the first borehole 6, respectively, the first motor 16 is turned off. During the movement of the second support plate 13, the second support plate 13 drives the fixed seat 17, the stud 28 and the first gear 27 to move horizontally to the right. The first gear 27 meshes and rolls on the rack 26, and then the first gear 27 drives the stud. Rotation of screw 28 causes the slider 19 to move vertically upwards. Slider 19 then moves the fixing plate 20 and fixing cover 21 vertically upwards. Fixing cover 21 moves the second motor 22 and the first rectangular rod 23 vertically upwards. Consequently, the first rectangular rod 23 separates from the first rectangular groove on the second screw 31. Simultaneously, the second gear 47 moves to engage with the third gear 48. Then, the second motor 22 is activated, causing the first rectangular rod 23 to rotate. The first rectangular rod 23 then rotates the second gear 47, which in turn rotates the third gear 48. The third gear 48 then rotates the third screw 32, which in turn moves the second connecting plate 34 vertically downwards. The second connecting plate 34 then moves the high thermal conductivity capsule 37 and the second drill rod 42 vertically downwards. The drill rod moves downwards, while the third screw 32 drives the third sprocket 52 to rotate. The third sprocket 52 drives the fourth sprocket 54 to rotate via the second chain 53. The fourth sprocket 54 drives the third rectangular rod 30 to rotate. The third rectangular rod 30, in conjunction with the third rectangular groove 46, drives the second drill rod 42 to rotate. The second drill rod 42 can drill into the fire zone. At the same time, the high thermal conductivity capsule 37 moves into the drilled energy conversion channel. The high thermal conductivity capsule 37 can convert thermal energy into electrical energy and store it in the energy storage battery 9. The conversion process is pollution-free, noiseless, safe, and reliable. Meanwhile, the temperature sensor 43 and humidity sensor 44 on the second drill rod 42 can monitor the temperature and humidity of the coal seam at the extraction site, achieving the purpose of real-time monitoring of the fire zone status and thermal energy extraction efficiency. After extraction is completed...The first drill rod 41, the second drill rod 42, and the high thermal conductivity capsule 37 are housed inside the casing 2. The pump body 55 is turned on, and the pump body 55 delivers water from the water tank 8 through the first connecting pipe 56, the fixed cylinder 57, the second connecting pipe 70, and the water pipe 58 to multiple nozzles 59. The multiple nozzles 59 can rinse and clean the surfaces of the first drill rod 41, the second drill rod 42, and the high thermal conductivity capsule 37. At the same time, when the water flows through the fixed cylinder 57, the water pressure drives the turbine 61 to rotate, and the turbine 61 drives the drive shaft 62 to rotate. The drive shaft 62 drives the first bevel gear 64 to rotate, which in turn drives the second bevel gear 65 to rotate. The second bevel gear 65 then drives the drive rod 66 to rotate, which in turn drives the turntable 67 to rotate. The turntable 67 drives the guide post 69 to rotate in a circular motion. The guide post 69, in conjunction with the waist-shaped groove 68, drives the drive plate 60 to oscillate back and forth. The drive plate 60 then drives the water pipe 58 and multiple nozzles 59 to rotate back and forth, thereby achieving thorough cleaning and facilitating subsequent continuous extraction operations, thus improving the efficiency of heat extraction. Example

[0052] The difference between this embodiment and Embodiment 1 is that a support frame is fixedly installed inside the ventilation opening, and a cooling fan is installed on the support frame. A temperature sensor and a controller are fixedly installed inside the housing 2. The temperature sensor, controller, and cooling fan are connected in sequence. The temperature sensor can monitor the internal temperature of the housing 2 in real time. When the internal temperature of the housing 2 reaches a preset threshold, the temperature sensor sends a command to the controller, and the controller controls the cooling fan to automatically start and stop, thereby enabling real-time heat dissipation inside the housing 2 and ensuring the stability of heat extraction.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for extracting thermal energy from coalfield fire zones using a capsule-type capsule, characterized in that: Includes the following steps: S1: Prepare the extraction device, which includes a vehicle body (1), a housing (2) fixedly installed on the top of the vehicle body (1), ventilation openings on both sides of the housing (2), and dustproof plates (3) fixedly installed in both ventilation openings. A first drill hole (6) and a second drill hole (7) are opened on the bottom inner wall of the housing (2). A bracket (4) is fixedly installed on the top of the housing (2), and a camera (5) is fixedly installed on the bracket (4). A water tank (8) is fixedly installed on the bottom inner wall of the housing (2), and a rinsing mechanism is provided inside the water tank (8). A storage battery (9) is connected to the top of the water tank (8). A first support plate (10) is fixedly installed on one side inner wall of the housing (2), and a second support plate (13) is slidably connected to the first support plate (10). A translation mechanism is provided on the plate (10). A vertical plate (35) is fixedly installed at the bottom of the second support plate (13). A first sliding groove (36) is provided on both sides of the vertical plate (35). A first connecting plate (33) and a second connecting plate (34) are slidably installed in the two first sliding grooves (36). A lifting mechanism is provided on the first connecting plate (33) and the second connecting plate (34). A drilling mechanism and a temperature and humidity monitoring mechanism are provided on the first connecting plate (33) and the second connecting plate (34). A high thermal conductivity capsule (37) is connected to the bottom of the second connecting plate (34). The high thermal conductivity capsule (37) is connected to the energy storage battery (9). A fixed seat (17) is fixedly installed on the top of the second support plate (13). A switching mechanism is provided on the fixed seat (17). S2: The device is moved to the inside of the coalfield fire zone by the vehicle body (1), and the energy conversion channel is opened on the ground of the coalfield fire zone by the drilling mechanism. The high thermal conductivity capsule (37) is moved to the top of the energy conversion channel by the translation mechanism, and the high thermal conductivity capsule (37) is moved to the inside of the energy conversion channel by the lifting mechanism to extract the thermal energy of the coalfield fire zone. The energy storage battery (9) collects the electrical energy converted from the thermal energy. S3: The drilling mechanism is switched to the monitoring mechanism through the switching mechanism. The temperature and humidity inside the fire zone are monitored in real time through the monitoring mechanism. The fire zone status and heat extraction efficiency are monitored. When the heat extraction is completed, the monitoring mechanism and the high thermal conductivity capsule (37) are stored inside the shell (2) through the lifting mechanism. S4: Finally, the monitoring mechanism, high thermal conductivity capsule (37) and drilling mechanism are rinsed and cleaned by the spraying mechanism, and then the device is moved to the next location by the vehicle body (1) to continue extracting heat energy.

2. The method for capsule-type thermal energy extraction in coalfield fire zones according to claim 1, characterized in that: The translation mechanism includes a first motor (16), a first through groove (11) and a second sliding groove (12) on a first support plate (10), a second support plate (13) slidably installed in the second sliding groove (12), a first motor (16) fixedly installed on one side inner wall of the first through groove (11), a first through hole on the other side inner wall of the first through groove (11), a first screw (15) rotatably installed in the first through hole, one end of the first screw (15) being fixedly connected to the output shaft of the first motor (16), the first screw (15) being threadedly connected to the second support plate (13), and a second through groove (14) on the second support plate (13).

3. The method for capsule-type thermal energy extraction in coalfield fire zones according to claim 2, characterized in that: The switching mechanism includes a slider (19), a third groove (18) is provided on the top of the fixed seat (17), the slider (19) is slidably installed in the third groove (18), a fixed plate (20) is fixedly installed on the top of the slider (19), a third through groove (24) and a sliding hole (25) are provided on the fixed seat (17), the third through groove (24) and the sliding hole (25) are connected, a toothed rod (26) is slidably installed in the sliding hole (25), one end of the toothed rod (26) is fixedly connected to one side of the first support plate (10), the toothed rod (26) meshes with a first gear (27), a second through hole is provided on the inner wall of the top of the third through groove (24), the second through hole is connected to the third groove (18), a stud (28) is rotatably installed in the second through hole, the stud (28) is threadedly connected to the slider (19), one end of the stud (28) is fixedly connected to the first gear (27).

4. The method for capsule-type thermal energy extraction in coalfield fire zones according to claim 3, characterized in that: The lifting mechanism includes a second screw (31) and a third screw (32). The bottom inner wall of the second through groove (14) has two third through holes. The second screw (31) and the third screw (32) are slidably installed in the two third through holes respectively. One end of the second screw (31) has a first rectangular groove. A first rectangular rod (23) is slidably installed in the first rectangular groove. The second screw (31) and the third screw (32) are threadedly connected to the first connecting plate (33) and the second connecting plate (34) respectively.

5. The method for capsule-type thermal energy extraction in coalfield fire zones according to claim 4, characterized in that: A second gear (47) and a third gear (48) are fixedly installed on the outer side of the first rectangular rod (23) and the outer side of the third screw (32), respectively. The second gear (47) and the third gear (48) cooperate with each other. A fixing cover (21) is fixedly installed on one side of the fixing plate (20). A second motor (22) is fixedly installed on the bottom inner wall of the fixing cover (21). The output shaft of the second motor (22) is fixedly connected to one end of the first rectangular rod (23). An installation hole is opened at the top of the second through groove (14). The first rectangular rod (23) is located in the installation hole.

6. The method for capsule-type thermal energy extraction in coalfield fire zones according to claim 5, characterized in that: The drilling mechanism includes a second rectangular rod (29) and a first drill rod (41). The first drill rod (41) is rotatably mounted on a first connecting plate (33). A second rectangular groove (45) is provided at one end of the first drill rod (41). The second rectangular rod (29) is rotatably mounted on a second support plate (13). The outer side of the second rectangular rod (29) is slidably connected to the inner wall of the second rectangular groove (45). A first sprocket (49) and a second sprocket (51) are fixedly mounted on the outer side of the second screw (31) and one end of the second rectangular rod (29), respectively. The same first chain (50) meshes on the first sprocket (49) and the second sprocket (51).

7. The method for capsule-type thermal energy extraction in coalfield fire zones according to claim 6, characterized in that: The monitoring mechanism includes a second drill rod (42) and a third rectangular rod (30). The second drill rod (42) and the third rectangular rod (30) are rotatably mounted on the second connecting plate (34) and the second support plate (13), respectively. A third rectangular groove (46) is opened at one end of the second drill rod (42). The outer side of the third rectangular rod (30) is slidably connected to the inner wall of the third rectangular groove (46). A temperature sensor (43) and a humidity sensor (44) are connected to the outer side of the second drill rod (42). Multiple medium-temperature heat pipes (38) are connected to the bottom of the high thermal conductivity capsule (37). A thermoelectric generator unit (39) and a cooling section (40) of a cooling device are connected inside the high thermal conductivity capsule (37). A third sprocket (52) and a fourth sprocket (54) are fixedly installed on the outer side of the third screw (32) and one end of the third rectangular rod (30), respectively. The same second chain (53) meshes on the third sprocket (52) and the fourth sprocket (54).

8. The method for capsule-type thermal energy extraction in coalfield fire zones according to claim 7, characterized in that: The flushing mechanism includes a pump body (55), which is fixedly installed on the bottom inner wall of the water tank (8). The output port of the pump body (55) is fixedly connected to a first connecting pipe (56). One end of the first connecting pipe (56) is fixedly connected to a fixed cylinder (57). A second connecting pipe (70) is fixedly connected to the fixed cylinder (57). A water pipe (58) is rotatably installed on the water tank (8). The water pipe (58) is rotatably installed inside the second connecting pipe (70). Multiple nozzles (59) are fixedly connected to the outside of the water pipe (58).

9. The method for capsule-type thermal energy extraction in coalfield fire zones according to claim 8, characterized in that: A support rod (63) is fixedly installed inside the fixed cylinder (57). A drive shaft (62) is rotatably installed on the support rod (63). A turbine (61) is fixedly connected to the outside of the drive shaft (62). A drive rod (66) is rotatably installed on the fixed cylinder (57). A first bevel gear (64) and a second bevel gear (65) are fixedly connected to one end of the drive shaft (62) and one end of the drive rod (66), respectively. The first bevel gear (64) and the second bevel gear (65) mesh with each other.

10. A capsule-type thermal energy extraction method for coalfield fire zones according to claim 9, characterized in that: The other end of the transmission rod (66) is fixedly connected to a turntable (67), and a guide post (69) is fixedly connected to one side of the turntable (67). A transmission plate (60) is fixedly connected to the outside of the water pipe (58). A waist-shaped groove (68) is opened on the transmission plate (60), and the guide post (69) is slidably installed in the waist-shaped groove (68).

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