A mine local fan backup power supply intelligent quick power restoration device

Abstract

The present application relates to mine local fan power restoration technical field, specifically relates to a kind of mine local fan backup power supply intelligent fast power restoration device, including main fan special power supply line, spare fan special power supply line, fan switch, main fan and spare fan, the main fan special power supply line and spare fan special power supply line middle part are equipped with power restoration device, the power restoration device includes shell, the shell inner chamber top is fixedly connected with U-shaped plate, the U-shaped plate top is equipped with main fan work detection mechanism;The main fan work detection mechanism bottom is equipped with the spare fan work detection mechanism that main fan special power supply line is started when power failure;Through power restoration device, when main fan special power supply line or spare fan special power supply line is open circuit, it can guarantee that battery power is depleted before, spare fan works normally, to prevent gas gas rapidly accumulates in driving face, to cause gas explosion, while providing certain time for maintenance personnel to carry out maintenance.

Description

Technical Field

[0001] This invention relates to the field of power restoration technology for mine local fans, and specifically to an intelligent and rapid power restoration device for backup power supply of mine local fans. Background Technology

[0002] In coal mining, to prevent the accumulation of methane gas during excavation, local fans are typically installed at the tunneling face to disperse the gas. The power supply to these fans is therefore crucial. If the fans stop working due to power outages, methane gas will rapidly accumulate at the tunneling face, potentially leading to a gas explosion. To address this, coal mining companies generally employ a dual power supply system: a primary power supply and a backup power supply. If the primary power supply line fails, the backup power supply is quickly activated to prevent fan shutdown.

[0003] However, this power supply method on the market has a drawback: if both the main fan's dedicated power supply line and the backup fan's dedicated power supply line are broken, the local fan will still stop. Maintenance personnel will not have enough time to repair it in an emergency, causing gas to accumulate rapidly at the tunneling face, which can lead to a gas explosion.

[0004] Therefore, it is necessary to invent an intelligent and rapid power restoration device for backup power supply of mine local fans to solve the above problems.

[0005] The information disclosed in the background section is only intended to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide an intelligent and rapid power restoration device for backup power supply of mine local fans, so as to solve the drawbacks of the dual power supply method in the prior art, greatly reduce the risk of local fan shutdown, reduce the rapid accumulation of methane gas, improve reliability, and solve the above-mentioned shortcomings in the technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a smart and rapid power restoration device for backup power supply of a mining fan, comprising a dedicated power supply line for the main fan, a dedicated power supply line for the backup fan, a fan switch, a main fan, and a backup fan. The dedicated power supply line for the main fan and the dedicated power supply line for the backup fan are jointly provided with a power restoration device in the middle. The power restoration device includes a housing, and a U-shaped plate is fixedly connected to the top of the inner cavity of the housing. A main fan working detection mechanism is provided on the top of the U-shaped plate.

[0008] The main fan working detection mechanism is equipped with a backup fan working detection mechanism at the bottom of the main fan dedicated power supply line, which is activated when the main fan power supply line is cut off.

[0009] The bottom of the backup fan working detection mechanism is equipped with a power restoration mechanism that is activated when the backup fan's dedicated power supply line is de-energized.

[0010] The main fan dedicated power supply line is electrically connected to the main fan working detection mechanism, the backup fan dedicated power supply line is electrically connected to the backup fan working detection mechanism, and the power restoration mechanism is electrically connected to the backup fan. The power restoration mechanism provides power to the backup fan when the backup fan dedicated power supply line and the main fan dedicated power supply line are de-energized.

[0011] Preferably, the main fan working detection mechanism includes a main fan wire, both ends of which pass through a U-shaped plate and are fixedly connected to a main fan connector. The two main fan connectors pass through both sides of the outer wall of the outer casing and are fixedly connected to the outer casing. The main fan connectors are electrically connected to the main fan dedicated power supply line. A first electromagnet is fixedly connected to the top of the U-shaped plate by a rib. The first electromagnet is electrically connected to the main fan wire. An iron plate is provided at the bottom of the first electromagnet. T-shaped rods are fixedly connected to both sides of the iron plate. Sliding grooves are opened on both sides of the outer wall of the U-shaped plate. The T-shaped rods pass through the sliding grooves and are slidably connected to the sliding grooves.

[0012] Preferably, the backup fan working detection mechanism includes a backup fan wire, both ends of which pass through a U-shaped plate and are fixedly connected to a backup fan connector. The two backup fan connectors pass through both sides of the outer wall of the outer casing and are fixedly connected to the outer casing. The backup fan connectors are electrically connected to a dedicated backup fan power supply line. A second electromagnet is fixedly connected to the middle of the U-shaped plate by a rib. The second electromagnet is electrically connected to the backup fan wire. A first switch and a second switch are fixedly connected to the top of the inner cavity of the outer casing. Both the first switch and the second switch are connected in series with the backup fan wire. An intermittent structure that can be driven by a T-shaped rod is provided on one side of the outer wall of the U-shaped plate. A push-button switch that can be activated by the intermittent structure is provided on one side of the outer wall of the U-shaped plate. The push-button switch is electrically connected to the first switch.

[0013] Preferably, the push switch includes a rack fixedly connected to a T-shaped rod. A gear meshes with one side of the outer wall of the rack and is rotatably connected to a U-shaped plate. An active dial is fixedly connected to the side of the gear away from the U-shaped plate. A grooved wheel is fitted to the side of the active dial near the push switch. An 8-shaped transmission plate is fixedly connected to the side of the grooved wheel near the U-shaped plate. A limit block is fixedly connected to the side of the U-shaped plate near the transmission plate. A transmission rod is slidably connected through the limit block. A baffle is fixedly connected to the end of the transmission rod near the transmission plate. A spring is fixedly connected between the baffle and the limit block. The end of the transmission rod away from the transmission plate is in contact with the push switch. A semi-circular piece is fixedly connected to the side of the baffle near the transmission plate.

[0014] Preferably, the power restoration mechanism includes a socket fixedly connected to the top surface of the U-shaped plate, a plug plate fixedly connected to the bottom surface of the iron sheet at the top of the socket, a corresponding conductive connector fixedly connected to the plug plate and the socket on adjacent sides, a first wire electrically connected to one end of the socket, the end of the first wire away from the socket passing through the U-shaped plate and fixedly connected to a battery, the battery being detachably connected inside the housing, a second wire electrically connected to the other end of the socket, the end of the second wire away from the socket passing through the U-shaped plate and fixedly connected to a power restoration plug, the power restoration plug being electrically connected to a backup fan.

[0015] Preferably, the second switch is a leakage current protection switch, with an iron bar fixedly connected to one end of the toggle switch, and an elastic rope fixedly connected to the closed side of the iron bar, the elastic rope being fixedly connected to the outer wall of the leakage current switch.

[0016] Preferably, an L-shaped rod is fixedly connected to one side of the outer wall of the T-shaped rod, a first piston is fixedly connected to the bottom end of the L-shaped rod, and U-shaped tubes are fixedly connected to both sides of the inner wall of the U-shaped plate by ribs. The U-shaped tubes are slidably connected to the first piston, and a second piston is slidably connected to the other end of the U-shaped tube. Liquid is filled between the first piston, the second piston, and the U-shaped tube.

[0017] Preferably, the liquid is a viscous liquid, including but not limited to oil.

[0018] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0019] 1. By using the power restoration device, when the main fan dedicated power supply line or the backup fan dedicated power supply line is disconnected, the backup fan can be guaranteed to work normally before the battery power is exhausted, so as to prevent the gas from accumulating rapidly in the tunneling face and causing a gas explosion, while providing a certain amount of time for maintenance personnel to carry out maintenance.

[0020] 2. Through the coordination between the internal structures of the power restoration device, after the maintenance of the main fan dedicated power supply line and the backup fan dedicated power supply line is completed, the internal structure of the power restoration device will automatically reset to its initial state, without the need for operators to open the casing for manual operation, thus achieving automation and reducing the workload of maintenance personnel. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0024] Figure 3 This is a partial cross-sectional view of the U-shaped plate of the present invention;

[0025] Figure 4 This is a schematic diagram of a partial structure within the U-shaped plate of the present invention;

[0026] Figure 5 This is a first view of the intermittent structure and the T-shaped rod connection of the present invention;

[0027] Figure 6 This is a second view showing the connection between the intermittent structure and the T-shaped rod of the present invention;

[0028] Figure 7 This is a schematic diagram of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Re-energizing device; 2. Housing; 3. U-shaped plate; 4. Main fan working detection mechanism; 5. Backup fan working detection mechanism; 6. Re-energizing mechanism; 7. Main fan wire; 8. Main fan connector; 9. First electromagnet; 10. Iron sheet; 11. T-shaped rod; 12. Slide groove; 13. Backup fan wire; 14. Backup fan connector; 15. Second electromagnet; 16. First switch; 17. Second switch; 18. Intermittent structure; 19. Push-button switch; 20. Rack; 21. Gear; 22. Active dial; 23. Grooved wheel; 24. Transmission plate; 25. 26. Limiting block; 27. Transmission rod; 28. Baffle; 29. ​​Spring; 30. Semicircular piece; 31. Socket; 32. Insert plate; 33. Connector; 34. First wire; 35. Battery; 36. Second wire; 37. Reconnector plug; 38. Iron bar; 39. Elastic rope; 40. L-shaped rod; 41. First piston; 42. U-shaped tube; 43. Second piston; 44. Liquid. Detailed Implementation

[0031] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this disclosure will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art. The drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0032] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more exemplary embodiments. Numerous specific details are provided in the following description to give a full understanding of exemplary embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced by omitting one or more of the specific details, or by employing other methods, components, steps, etc. In other instances, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0033] The invention provides an intelligent and rapid power restoration device for backup power supply of mine local fans, which solves the drawbacks of the existing dual power supply method, greatly reduces the risk of local fan shutdown, reduces the risk of rapid accumulation of methane gas, and improves reliability.

[0034] The technical solution in this invention is to solve the above-mentioned technical problems. The overall idea is as follows: By designing a power restoration device, when the main fan dedicated power supply line is damaged and loses power, the backup fan dedicated power supply line is automatically started to supply power to the backup fan. When the backup fan dedicated power supply line is also damaged, the power restoration mechanism is started to provide time for emergency repairs, thereby reducing the risk of rapid accumulation of gas and improving reliability.

[0035] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0036] This invention provides, for example Figure 1-6 The intelligent and rapid power restoration device for backup power supply of a mine fan shown includes a dedicated power supply line for the main fan, a dedicated power supply line for the backup fan, a fan switch, a main fan, and a backup fan. The dedicated power supply line for the main fan and the dedicated power supply line for the backup fan are jointly provided with a power restoration device 1 in the middle. The power restoration device 1 includes a housing 2. A U-shaped plate 3 is fixedly connected to the top of the inner cavity of the housing 2. A main fan working detection mechanism 4 is provided on the top of the U-shaped plate 3.

[0037] The main fan working detection mechanism 4 is equipped with a backup fan working detection mechanism 5 at the bottom, which is activated when the main fan dedicated power supply line is cut off.

[0038] The bottom of the backup fan working detection mechanism 5 is equipped with a power restoration mechanism 6 that is activated when the backup fan dedicated power supply line is de-energized.

[0039] The main fan's dedicated power supply line is electrically connected to the main fan operation detection mechanism 4, and the backup fan's dedicated power supply line is electrically connected to the backup fan operation detection mechanism 5. The power restoration mechanism 6 is electrically connected to the backup fan. The power restoration mechanism 6 provides power to the backup fan when both the main and backup fan dedicated power supply lines are de-energized. The main fan detection mechanism can promptly activate the backup fan when the main fan's dedicated power supply line is damaged, causing the main fan to malfunction. The power restoration mechanism 6, activated when the backup fan's dedicated power supply line is de-energized, quickly provides power to the backup fan, giving maintenance personnel time to repair both the main and backup fan dedicated power supply lines. This ensures the backup fan operates normally, preventing the rapid accumulation of methane gas at the tunneling face. Furthermore, it eliminates the need to lay a line as long as the backup fan's dedicated power supply line, reducing construction costs.

[0040] In the above technical solution, further, such as Figure 2 , Figure 3 and Figure 4 As shown, the main fan working detection mechanism 4 includes a main fan wire 7. Both ends of the main fan wire 7 pass through the U-shaped plate 3 and are fixedly connected to a main fan connector 8. The two main fan connectors 8 pass through both sides of the outer wall of the outer casing 2 and are fixedly connected to the outer casing 2. The main fan connectors 8 are electrically connected to the main fan dedicated power supply line. A first electromagnet 9 is fixedly connected to the top of the U-shaped plate 3 by a rib. The first electromagnet 9 is electrically connected to the main fan wire 7. An iron plate 10 is provided at the bottom of the first electromagnet. Both sides of the iron plate 10 are fixed. A T-shaped rod 11 is connected to the U-shaped plate 3. Slide grooves 12 are opened on both sides of the outer wall of the U-shaped plate 3. The T-shaped rod 11 passes through the slide groove 12 and is slidably connected to the slide groove 12. The main fan working detection mechanism 4 determines whether the main fan dedicated power supply line is energized. When energized, the first electromagnet 9 is activated and attracts the iron piece 10. When the main fan dedicated power supply line is de-energized, the first electromagnet 9 loses its attraction. Under the action of gravity, the iron piece 10 drives the T-shaped rod 11 to slide down inside the slide groove 12, thereby activating the backup fan dedicated power supply line to provide power to the backup fan.

[0041] In the above technical solutions, specifically, such as Figure 2 , Figure 3 and Figure 4As shown, the backup fan working detection mechanism 5 includes a backup fan wire 13. Both ends of the backup fan wire 13 pass through the U-shaped plate 3 and are fixedly connected to backup fan connectors 14. The two backup fan connectors 14 pass through both sides of the outer wall of the outer shell 2 and are fixedly connected to the outer shell 2. The backup fan connectors 14 are electrically connected to the backup fan dedicated power supply line. A second electromagnet 15 is fixedly connected to the middle of the U-shaped plate 3 by a rib. The second electromagnet 15 is electrically connected to the backup fan wire 13. A first switch 16 and a second switch 17 are fixedly connected to the top of the inner cavity of the outer shell 2. The first switch 16 and the second switch 17 are both connected in series with the backup fan wire 13. One side of the outer wall of the U-shaped plate 3 is provided with an intermittent mechanism that can be driven by a T-shaped rod 11. Structure 18, the outer wall of the U-shaped plate 3 is provided with a push switch 19 that can be activated by the intermittent structure 18. The push switch 19 is electrically connected to the first switch 16. When the first electromagnet 9 is closed, the second switch 17 is reset to the energized state. When the T-shaped rod 11 descends, it drives the intermittent structure 18 to drive. The intermittent structure 18 drives the push switch 19 to activate the first switch 16. At this time, the backup fan dedicated power supply line and the backup fan wire 13 are energized. The second electromagnet 15 is activated. The second electromagnet 15 attracts one side of the iron plate 10 to prevent the iron plate 10 from continuing to descend. When the backup fan dedicated power supply line is de-energized, the second electromagnet 15 is closed. The iron plate 10 descends under the action of gravity, thereby activating the power restoration device 1.

[0042] In the above technical solutions, details are as follows: Figure 4 , Figure 5 and Figure 6As shown, the push-button switch 19 includes a rack 20 fixedly connected to a T-shaped rod 11. A gear 21, rotatably connected to a U-shaped plate 3, meshes with one side of the outer wall of the rack 20. An active dial 22 is fixedly connected to the side of the gear 21 away from the U-shaped plate 3. A grooved wheel 23 engages with the side of the active dial 22 near the push-button switch 19. An 8-shaped transmission plate 24 is fixedly connected to the side of the grooved wheel 23 near the U-shaped plate 3. A limit block 25 is fixedly connected to the side of the U-shaped plate 3 near the transmission plate 24. A transmission rod 26 is slidably connected through and inside the limit block 25. A baffle 27 is fixedly connected to one end of the transmission rod 26 near the transmission plate 24. A spring 28 is fixedly connected between the baffle 27 and the limit block 25. The end of the transmission rod 26 away from the transmission plate 24 is in contact with the push-button switch 19. A semicircular piece 29 is fixedly connected to the side of the transmission plate 24. It drives the T-shaped rod 11 through the iron plate 10. The T-shaped rod 11 drives the rack 20. The rack 20 drives the gear 21 to rotate. The gear 21 drives the active dial 22 to rotate. The active dial 22 drives the grooved wheel 23 to rotate 90°. When the grooved wheel 23 drives the transmission plate 24 to rotate 40°, the transmission plate 24 drives the semicircular piece 29 to move towards the push switch 19. The semicircular piece 29 drives the baffle 27. The baffle 27 drives the spring 28 and the transmission rod 26. The spring 28 is compressed. When the grooved wheel 23 drives the transmission plate 24 to rotate another 40°, the spring 28 returns to its original position. The spring 28 drives the baffle 27 and the transmission rod 26 to return to their original positions. At this time, the transmission rod 26 completes a pressing and releasing step, thereby starting or closing the push switch 19 to control the power supply or circuit breaking of the first switch 16.

[0043] In the above technical solutions, the preferred option is as follows: Figure 1 , Figure 3 and Figure 4 As shown, the power restoration mechanism 6 includes a socket 30 fixedly connected to the top surface of the U-shaped plate 3. The top of the socket 30 is provided with a plug plate 31 fixedly connected to the bottom surface of the iron sheet 10. Corresponding conductive connectors 32 are fixedly connected to the plug plate 31 and the adjacent side of the socket 30. One end of the socket 30 is electrically connected to a first wire 33. The end of the first wire 33 away from the socket 30 passes through the U-shaped plate 3 and is fixedly connected to a battery 34. The battery 34 is detachably connected inside the outer casing 2. The other end of the socket 30 is electrically connected to... There is a second wire 35. The end of the second wire 35 away from the socket 30 passes through the U-shaped plate 3 and is fixedly connected to the power restoration plug 36. The power restoration plug 36 is electrically connected to the backup fan. When the backup fan's dedicated power supply line is also de-energized, the iron plate 10 drives the plug plate 31 to descend. When the connector 32 on the plug plate 31 and the connector 32 on the socket 30 come into contact, the electrical energy in the battery 34 is transmitted to the backup fan through the first wire 33, the plug plate 31, the socket 30, the connector 32, and the second wire 35, providing maintenance time for the maintenance personnel.

[0044] In the above technical solutions, refer to, for example Figure 2 , Figure 3 and Figure 6 As shown, the second switch 17 is a leakage current protection switch. One end of the toggle switch on the leakage current protection switch is fixedly connected to an iron bar 38. An elastic rope 39 is fixedly connected to the closed side of the iron bar 38. The elastic rope 39 is fixedly connected to the outer wall of the leakage current switch. When the first electromagnet 9 is working, the iron bar 38 on the toggle switch is attracted to the first electromagnet 9 by magnetic force. The toggle switch drives the elastic rope 39 to stretch and tighten. At this time, the leakage current protection switch is in the de-energized state. When the first electromagnet 9 is closed, the elastic rope 39 drives the toggle switch to reset. At this time, the leakage current protection switch is in the energized state.

[0045] In the above technical solutions, details are as follows: Figure 2 and Figure 3 As shown, an L-shaped rod 40 is fixedly connected to one side of the outer wall of the T-shaped rod 11. A first piston 41 is fixedly connected to the bottom end of the L-shaped rod 40. U-shaped tubes 42 are fixedly connected to both sides of the inner wall of the U-shaped plate 3 through ribs. The U-shaped tube 42 is slidably connected to the first piston 41. A second piston 43 is slidably connected to the other end of the U-shaped tube 42. Liquid 44 is filled between the first piston 41, the second piston 43 and the U-shaped tube 42. When the T-shaped rod 11 descends, it drives the L-shaped rod 40. The L-shaped rod 40 drives the first piston 41 to descend. The first piston 41 pushes the liquid 44 to make the second piston 43 rise. The resistance of the liquid 44 when it pushes the second piston 43 is reduced. The speed at which the iron plate 10 descends is reduced when the main fan power supply line or the backup fan power supply line is cut off.

[0046] In the above technical solution, further, such as Figure 3 As shown, the liquid 44 is a viscous liquid, including but not limited to oil. By making the liquid 44 a viscous liquid, the moving speed of the iron sheet 10 is further reduced.

[0047] The specific implementation method is as follows: During the power line damage stage: When the main fan dedicated power supply line is damaged, the toggle plate resets, the iron plate 10 descends and drives the intermittent mechanism to start the first switch 16. At this time, the backup fan dedicated power supply line is energized and the backup fan is started. When the backup fan dedicated power supply line is also damaged, the iron plate 10 drives the plug plate 31 to contact the connector 32 on the socket 30, so that the battery 34 provides power to start the backup fan. In this way, when the main fan dedicated power supply line or the backup fan dedicated power supply line is broken, the backup fan can be guaranteed to work normally before the battery 34 is exhausted, so as to prevent the gas from accumulating rapidly in the tunneling face and causing a gas explosion. At the same time, it provides a certain amount of time for maintenance personnel to carry out maintenance.

[0048] After the power supply lines for the main fan and the backup fan are repaired, the first electromagnet 9 uses magnetic force to attract the toggle switch on the leakage protection switch to rotate, thus breaking the circuit in the backup fan's power supply line. Simultaneously, the iron plate 10 is attracted to the bottom of the first electromagnet 9, preventing the battery 34 from supplying power to the backup fan. As the iron plate 10 moves, it also drives the gap structure to control the push switch 19, closing the first switch 16. Utilizing the coordination between the internal structures of the power restoration device 1, after the main fan and backup fan power supply lines are repaired, the internal structure of the power restoration device 1 automatically resets to its initial state, eliminating the need for manual operation by opening the outer casing 2. This achieves automation and reduces the workload of maintenance personnel.

[0049] The internal circuit schematic of this invention is as follows: Figure 7 As shown, the internal working process is as follows:

[0050] When Battery 1, Battery 2, Battery 3, and the backup power intelligent inverter for the local fan are in standby mode, the switching status monitoring 24a / 25a for the #1 main fan and the switching status monitoring 13a / 14a for the #1 backup fan simultaneously detects abnormal power supply or power outages on the dedicated power supply lines 2a and 7a for the #1 main fan and 7a for the #1 backup fan. The dedicated power supply lines 11a, 18a, 22a, 22a, and 35a for the #3 main fan and 35a for the #3 backup fan are functioning normally. The backup power intelligent inverter for the local fan outputs 660V AC voltage, supplying power to the #1 backup fan fan 49a through the #1 backup fan junction box 47a. The backup fan fans 53a and 57a for the #2 and #3 backup fans are also powered. No AC 660V power supply is provided; the switching status monitoring 24a / 25a for the #1 main fan and 13a / 14a for the #1 backup fan immediately stops supplying power to the #1 backup fan 49a when either of them is detected to have resumed normal power supply; the switching status monitoring 28a / 29a for the #2 main fan, 26a / 27a for the #2 backup fan, and 32a / 33a for the #3a main fan and 58a / 59a for the #3a backup fan outputting AC 660V power and stopping AC 660V power supply is the same as that of the switching status monitoring 24a / 25a for the #1 main fan and 13a / 14a for the #1 backup fan.

[0051] When the intelligent inverters for Battery 1, Battery 2, Battery 3, and the backup power supply of the local fan are in standby mode, the switching status monitoring 24a / 25a for the #1 main fan, the switching status monitoring 13a / 14a for the #1 backup fan, the switching status monitoring 28a / 29a for the #2 main fan, and the switching status monitoring 26a / 27a for the #2 backup fan simultaneously detect abnormal power supply or power failure on the dedicated power supply lines 2a, 7a, 11a, and 18a for the #1 main fan, 11a, and 18a for the #2 backup fan. The dedicated power supply lines 22a and 35a for the #3 main fan and 35a for the #3 backup fan are powered normally. The intelligent inverter for the backup power supply of the local fan outputs AC 660V voltage, which supplies power to the #1 backup fan 49a through the #1 backup fan junction box 47a and to the #2 backup fan 53a through the #2 backup fan junction box 51a. For standby fan 57a ​​(3a#), the local fan backup power intelligent inverter does not provide AC 660V power. When the switching status monitoring systems 24a / 25a (1# main fan), 13a / 14a (1# standby fan), 28a / 29a (2# main fan), and 26a / 27a (2# standby fan) detect that any one of these systems has resumed normal power supply, the local fan backup power intelligent inverter immediately stops supplying power to standby fan 49a (1# standby fan) and standby fan 53a (2# standby fan). The working principle of the local fan backup power supply intelligent inverters for monitoring the switching status of standby fan #2 (26a / 27a), main fan #1 (24a / 25a), standby fan #1 (13a / 14a), main fan #3 (32a / 33a), and standby fan #3 (58a / 59a) is the same as that of the main fan #1 (24a / 25a), standby fan #1 (13a / 14a), main fan #2 (28a / 29a), and standby fan #2 (26a / 27a).

[0052] When the intelligent inverters for Battery 1, Battery 2, Battery 3, and the backup power supply of the local fan are in standby mode, the following monitoring systems are activated: Main fan #1 switching status monitoring (24a / 25a), Backup fan #1 switching status monitoring (13a / 14a), Main fan #2 switching status monitoring (28a / 29a), Backup fan #2 switching status monitoring (26a / 27a), Main fan #3a #3a #3a #3a #3a #3a #3a #3a #3a #5a #58a / 59a). These systems detect the dedicated power supply lines 2a and 2a for the main fan and the backup fan #1. If power supply abnormalities or power outages occur simultaneously in line 7a, main fan dedicated power supply line 11a, backup fan dedicated power supply line 18a, main fan dedicated power supply line 22a, and backup fan dedicated power supply line 35a, the backup power supply intelligent inverter of the local fan will output AC 660V voltage, supplying power to backup fan 49a through backup fan junction box 47a, backup fan 53a through backup fan junction box 51a, and backup fan 57a ​​through backup fan junction box 55a. If any of the following power supply lines is detected to have resumed normal power supply: 1# main fan dedicated power supply line 2a, 1# backup fan dedicated power supply line 7a, 2# main fan dedicated power supply line 11a, 2# backup fan dedicated power supply line 18a, 3a# main fan dedicated power supply line 22a, or 3a# backup fan dedicated power supply line 35a, the local fan backup power supply intelligent inverter immediately stops supplying power to 1# backup fan 49a, 2# backup fan 53a, and 3a# backup fan 57a.

[0053] It can ensure that if any one, two, or three of the main / standby fan power supply lines in Group 3a (Dedicated power supply line 2a for main fan #1, dedicated power supply line 7a for standby fan #1, dedicated power supply line 11a for main fan #2, dedicated power supply line 18a for standby fan #2, dedicated power supply line 22a for main fan #3, dedicated power supply line 35a for standby fan #3) experience a power supply abnormality or power outage, the local fan backup power intelligent inverter will immediately start to supply power to the corresponding standby fan among standby fan 49a for standby fan #1, standby fan 53a for standby fan #2, and standby fan 57a ​​for standby fan #3, preventing gas accumulation at the tunneling face and effectively protecting the lives of on-site personnel.

[0054] When any of the three main / backup fan power supply lines resumes normal power supply, the local fan backup power intelligent inverter immediately stops outputting and switches to standby mode. Powering the local fan backup power intelligent inverter with batteries constitutes an independent local fan power supply circuit, featuring high reliability, high intelligence, and high security.

[0055] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

[0056] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0057] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0058] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A smart and rapid power restoration device for backup power supply of a mining fan, comprising a dedicated power supply line for the main fan, a dedicated power supply line for the backup fan, a fan switch, a main fan, and a backup fan, characterized in that: The main fan dedicated power supply line and the backup fan dedicated power supply line are provided with a power restoration device (1) in the middle. The power restoration device (1) includes a shell (2). A U-shaped plate (3) is fixedly connected to the top of the inner cavity of the shell (2). A main fan working detection mechanism (4) is provided on the top of the U-shaped plate (3). The main fan working detection mechanism (4) has a backup fan working detection mechanism (5) at the bottom that is activated when the main fan dedicated power supply line is disconnected. The backup fan working detection mechanism (5) is equipped with a power restoration mechanism (6) at the bottom that is activated when the backup fan dedicated power supply line is de-energized. The main fan dedicated power supply line is electrically connected to the main fan working detection mechanism (4), the backup fan dedicated power supply line is electrically connected to the backup fan working detection mechanism (5), the power restoration mechanism (6) is electrically connected to the backup fan, and the power restoration mechanism (6) provides power to the backup fan when the backup fan dedicated power supply line and the main fan dedicated power supply line are de-energized; The backup fan working detection mechanism (5) includes a backup fan wire (13). Both ends of the backup fan wire (13) pass through the U-shaped plate (3) and are fixedly connected to backup fan connectors (14). The two backup fan connectors (14) pass through both sides of the outer wall of the outer shell (2) and are fixedly connected to the outer shell (2). The backup fan connectors (14) are electrically connected to the backup fan dedicated power supply line. The middle part of the U-shaped plate (3) is fixedly connected to a second electromagnet (15) by a rib. The second electromagnet (15) is electrically connected to the backup fan wire (13). The top of the inner cavity of the outer shell (2) is fixedly connected to a first switch (16) and a second switch (17). The first switch (16) and the second switch (17) are both connected in series with the backup fan wire (13). One side of the outer wall of the U-shaped plate (3) is provided with an intermittent structure (18) that can be driven by a T-shaped rod (11). (3) A push switch (19) that can be activated by the intermittent structure (18) is provided on one side of the outer wall. The push switch (19) is electrically connected to the first switch (16). The top of the U-shaped plate (3) is fixedly connected to the first electromagnet (9) by the ribs. The first electromagnet (9) attracts the toggle piece on the second switch (17) to rotate by magnetic force, so that the backup fan dedicated power supply line is disconnected. At the same time, the iron piece (10) is attracted to the bottom of the first electromagnet (9) by magnetic force, so that the battery (34) no longer provides power to the backup fan. When the iron piece (10) moves, it also drives the intermittent structure again to control the push switch (19) to close the first switch (16). By utilizing the cooperation between the internal structures of the power restoration device (1), after the main fan dedicated power supply line and the backup fan dedicated power supply line are repaired, the internal structure of the power restoration device (1) will automatically reset to the initial state.

2. The intelligent fast power restoration device for backup power supply of mine local fan as described in claim 1, characterized in that: The main fan working detection mechanism (4) includes a main fan wire (7). Both ends of the main fan wire (7) pass through the U-shaped plate (3) and are fixedly connected to the main fan connector (8). The two main fan connectors (8) pass through both sides of the outer wall of the outer shell (2) and are fixedly connected to the outer shell (2). The main fan connector (8) is electrically connected to the main fan dedicated power supply line. The first electromagnet (9) is electrically connected to the main fan wire (7). The bottom of the first electromagnet is provided with an iron plate (10). Both sides of the iron plate (10) are fixedly connected with T-shaped rods (11). Both sides of the outer wall of the U-shaped plate (3) are provided with sliding grooves (12). The T-shaped rods (11) pass through the sliding grooves (12) and are slidably connected to the sliding grooves (12).

3. The intelligent fast power restoration device for backup power supply of a mining local fan according to claim 2, characterized in that: The push-button switch (19) includes a rack (20) fixedly connected to a T-shaped rod (11). A gear (21) meshes with the outer wall of the rack (20) and is rotatably connected to a U-shaped plate (3). A drive dial (22) is fixedly connected to the side of the gear (21) away from the U-shaped plate (3). A grooved wheel (23) is fitted to the side of the drive dial (22) closest to the push-button switch (19). An 8-shaped transmission plate (24) is fixedly connected to the side of the grooved wheel (23) closest to the U-shaped plate (3). The U-shaped plate (3) is close to... A limiting block (25) is fixedly connected to one side of the transmission plate (24). A transmission rod (26) is slidably connected through the limiting block (25). A baffle (27) is fixedly connected to one end of the transmission rod (26) near the transmission plate (24). A spring (28) is fixedly connected between the baffle (27) and the limiting block (25). The end of the transmission rod (26) away from the transmission plate (24) is in contact with the push switch (19). A semi-circular piece (29) is fixedly connected to the side of the baffle (27) near the transmission plate (24).

4. The intelligent fast power restoration device for backup power supply of mine local fan as described in claim 1, characterized in that: The power restoration mechanism (6) includes a socket (30) fixedly connected to the top surface of the U-shaped plate (3). The top of the socket (30) is provided with a plug plate (31) fixedly connected to the bottom surface of the iron sheet (10). The plug plate (31) and the socket (30) are fixedly connected to a corresponding connector (32) for conducting electricity. One end of the socket (30) is electrically connected to a first wire (33). The end of the first wire (33) away from the socket (30) passes through the U-shaped plate (3) and is fixedly connected to a battery (34). The battery (34) is detachably connected to the inside of the outer shell (2). The other end of the socket (30) is electrically connected to a second wire (35). The end of the second wire (35) away from the socket (30) passes through the U-shaped plate (3) and is fixedly connected to a power restoration plug (36). The power restoration plug (36) is electrically connected to the spare fan.

5. The intelligent fast power restoration device for backup power supply of mine local fan according to claim 1, characterized in that: The second switch (17) is a leakage current protection switch. One end of the leakage current protection switch toggle piece is fixedly connected to an iron bar (38). The closed side of the iron bar (38) is fixedly connected to an elastic rope (39). The elastic rope (39) is fixedly connected to the outer wall of the leakage current switch.

6. The intelligent rapid power restoration device for backup power supply of a mining local fan according to claim 2, characterized in that: An L-shaped rod (40) is fixedly connected to one side of the outer wall of the T-shaped rod (11). A first piston (41) is fixedly connected to the bottom end of the L-shaped rod (40). A U-shaped tube (42) is fixedly connected to both sides of the inner wall of the U-shaped plate (3) through ribs. The U-shaped tube (42) is slidably connected to the first piston (41). A second piston (43) is slidably connected to the other end of the U-shaped tube (42). Liquid (44) is filled between the first piston (41), the second piston (43) and the U-shaped tube (42).

7. The intelligent fast power restoration device for backup power supply of mine local fan according to claim 6, characterized in that: The liquid (44) is a viscous liquid, including but not limited to oil.

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