A charging pile with multiple emergency fire extinguishing structures

Abstract

The application discloses a charging pile with multiple emergency fire extinguishing structures, which comprises a base, a charging pile fixed at the top middle point of the base, and a cover plate fixed at the top of the charging pile, an upper side of an inner side of the charging pile is provided with a rotating rod, and both sides of the rotating rod are provided with constant force spring winches. Thus, after a fire is triggered, the charging pile is fully covered by pulling the annular fire-retardant blanket, a closed and isolated fire extinguishing layer is formed, the first layer of fire extinguishing and suppression effect is realized by cutting off oxygen, external oxygen supply is blocked, internal fire extinguishing agent is prevented from being scattered and fire from being rekindled, the spread of fire is prevented from igniting surrounding facilities, the risk of chain fire is blocked, the top annular water tank is linked, the waterway is automatically connected during the lifting of the fire-retardant blanket, the fire-retardant blanket and the charging pile shell are continuously water-cooled, the second layer of external fire extinguishing protection is formed by temperature reduction and fire retardation, the outer layer fire control is realized from the aspects of oxygen isolation, fire suppression, fire spread blocking and water cooling, and the overall fire extinguishing reliability is greatly improved.

Description

Technical Field

[0001] This invention relates to a charging pile equipped with multiple emergency fire extinguishing structures, belonging to the field of charging pile technology. Background Technology

[0002] Charging stations are in complex outdoor conditions for a long time, which poses multiple safety hazards such as overload charging, aging lines, short circuits, and thermal runaway of vehicle batteries that can cause fires. Once a fire occurs, it can easily lead to equipment burnout, widespread fires, or even explosions, seriously threatening the safety of charging equipment, station facilities, and the property of people in the surrounding area.

[0003] Currently, the main protection method for charging piles in existing technologies is the built-in fire extinguishing system, which relies on aerosol, dry powder, and spray fire extinguishing components installed inside the device to deal with fires. However, in actual fire conditions, outside air will continuously enter the device through gaps in the shell, open cavities on the sides, or already burned gaps. The continuous supply of oxygen will significantly weaken the flame suppression and fire extinguishing effect of the fire extinguishing agent, which can easily lead to incomplete fire extinguishing and fire re-ignition. Furthermore, open flames and high-temperature smoke can easily leak and spread outwards, directly igniting flammable materials such as surrounding cables, cabinets, and charging vehicles, causing a single-point fire to spread and expand, triggering a chain fire, which poses a great safety hazard. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a charging pile with multiple emergency fire extinguishing structures, which can isolate the charging pile from external oxygen intrusion and restrict the leakage of open flames and high-temperature smoke when a fire occurs, thereby preventing the fire from spreading and igniting surrounding equipment.

[0005] The technical solution adopted by this invention to solve its technical problem is: A charging pile equipped with multiple emergency fire extinguishing structures includes: a charging pile with multiple emergency fire extinguishing structures, characterized in that it includes: a base, a charging pile fixed at the top midpoint of the base, and a cover plate fixed at the top of the charging pile; a rotating rod arranged on the upper inner side of the charging pile, and constant force spring winches arranged on both sides of the rotating rod; the constant force spring winches are fixed to both ends of the inner wall of the charging pile; winding rollers are fixed at both ends of the rotating rod, and the winding rollers are connected to a movable ring through stainless steel wire; an annular groove is opened on the base, the movable ring is arranged in the annular groove, and an annular flame-retardant blanket is fixed in the annular groove, with the top of the annular flame-retardant blanket connected to the movable ring; The top of the charging pile is equipped with a guide mechanism for guiding the stainless steel wire, the cover plate is equipped with a locking mechanism for locking the movable ring after it is lifted, a fire extinguisher is fixed inside the charging pile, and an exhaust pipe is fixed on the top of the fire extinguisher. An eccentric disc is symmetrically fixed at the midpoint of the rotating rod, and the two sets of eccentric discs are connected by an eccentric shaft. A fixing block is fixed on the top inner side of the charging pile. The outer side of the eccentric shaft is provided with a swing mechanism for increasing the fire extinguishing range, and the outer side of the eccentric shaft is also provided with a pressure relief mechanism for preventing high pressure inside the charging pile. A ball valve is provided at the bottom inside the exhaust pipe, and a gear is connected to the outer side of the ball valve through a valve stem. A drive rod is provided inside the charging pile, and a rack is fixed to the side of the drive rod. The rack meshes with the gear. A drive mechanism is provided at the top inside the charging pile.

[0006] Preferably, the guiding mechanism includes a guide frame, which is fixed to the top of the charging pile and is H-shaped. Two sets of guide wheels are respectively provided on both sides of the guide frame, and the guide wheels are in contact with stainless steel wire. The two ends of the stainless steel wire pass through the charging pile and the cover plate respectively.

[0007] Preferably, the locking mechanism includes a slide groove, which is formed on the cover plate, and a movable block is slidably connected in the slide groove. A wedge-shaped card is fixed at one bottom end of the movable block, and a spring is fixed on the side of the movable block. The spring is fixedly connected to the inner wall of the slide groove. The movable block is also provided with a spraying mechanism for spraying the annular flame-retardant blanket.

[0008] Preferably, the spraying mechanism includes a Z-shaped water guide pipe, which is fixed to the movable block. A telescopic insertion tube is provided at the top of the Z-shaped water guide pipe. Several sets of barbs are fixed on the outer wall of the telescopic insertion tube. An annular water tank is fixed at the top of the cover plate. Several sets of drain nozzles are fixed on the inner side of the annular water tank. Sealing silicone is fixed inside the drain nozzles, and the sealing silicone corresponds horizontally to the telescopic insertion tube.

[0009] Preferably, the swing mechanism includes a hollow vertical plate, the top of which is connected to a fixed block via a bearing, the eccentric shaft is located inside the hollow vertical plate, and a nozzle is fixed at the bottom of the hollow vertical plate, with the nozzle connected to an exhaust pipe via a flexible hose.

[0010] Preferably, the pressure relief mechanism includes a hollow horizontal plate, one end of which is fixed with a top rod, and the side of the top rod is slidably connected to a fixed block via a slider. The eccentric shaft is located inside the hollow horizontal plate. A pressure relief port is provided at the top of the charging pile, and a pressure relief plate is provided in the pressure relief port. The pressure relief plate is fixedly connected to the top rod. An exhaust control mechanism for adjusting the exhaust flow is also provided on one side of the hollow horizontal plate.

[0011] Preferably, the exhaust control mechanism includes a connecting plate, which is fixed to the side of the hollow horizontal plate, and a movable rod is fixed to one end of the connecting plate. The movable rod is disposed through the top of the exhaust pipe, and a conical flow restrictor is fixed to the movable rod. A flow restrictor ring is fixed inside the exhaust pipe.

[0012] Preferably, the driving mechanism includes a thermal sleeve, a piston rod is provided inside the thermal sleeve and the piston rod is connected to the driving rod, a fork for locking the eccentric shaft is fixed laterally at the top of the driving rod, and a guide rod is also fixed at the top inner side of the charging pile and slides through the fork.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The flame-retardant blanket retraction structure consists of a base annular groove, a movable ring, a constant force spring winch, a rotating rod, and stainless steel wire. After a fire is triggered, the annular flame-retardant blanket is lifted to fully cover the charging pile, forming a sealed and isolated fire extinguishing layer. This first layer of fire suppression is achieved by cutting off oxygen, blocking external oxygen supply, preventing the internal extinguishing agent from dissipating and the fire from reigniting, and sealing the path of open flames and high-temperature smoke leakage to prevent the fire from spreading and igniting surrounding facilities, thus blocking the risk of a chain fire. The top annular water tank is linked, and the water circuit is automatically connected during the lifting of the flame-retardant blanket to continuously cool the flame-retardant blanket and the charging pile shell, forming a second layer of external fire extinguishing protection by cooling and flame retardant. This achieves external fire control from multiple aspects, including oxygen isolation and flame suppression, fire spread prevention, and water cooling, significantly improving the overall fire extinguishing reliability. After a fire is triggered, the outer ring-shaped flame-retardant blanket rises synchronously, and the eccentric disc and eccentric shaft drive the swing mechanism synchronously, causing the nozzles to swing back and forth, increasing the spray range of the extinguishing medium and reducing the blind spots. During the rise of the flame-retardant blanket, the eccentric shaft drives the pressure relief mechanism to operate, pushing the hollow horizontal plate and top rod to open the pressure relief plate for automatic pressure relief, timely expelling the high-temperature and high-pressure gas generated inside the equipment, avoiding the risk of shell bulging and explosion. After the flame-retardant blanket is fully raised to form a sealed oxygen-isolated protective space, the eccentric shaft stops driving the pressure relief mechanism synchronously, and the pressure relief plate closes to end the pressure relief. The sealed cavity can retain a sufficient amount of extinguishing medium to continuously suppress the remaining fire and isolate oxygen. The internal and external protective actions work together to achieve a multi-layered emergency fire extinguishing and protection system. The hollow horizontal plate linkage rod drives the conical flow-limiting head, which synchronously changes the flow cross-sectional area of ​​the exhaust pipe with the mechanical stroke of the flame-retardant blanket as it rises and falls, thus adjusting the discharge flow rate of the extinguishing agent. When the conical flow-limiting head rises, the flow cross-section is fully open, and the extinguishing agent is released rapidly in large flow rate, effectively suppressing the initial open flame. When the conical flow-limiting head falls, it narrows the flow cross-section, reducing the medium spray rate. Under the condition that the total charge of the extinguishing agent remains constant, this technical solution can effectively extend the duration of medium spray, allowing the extinguishing agent to remain in the sealed cavity of the charging pile for a longer period of time, continuously suppressing the risk of reignition and improving the overall fire protection effect. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a front view cross-sectional structural diagram of the charging pile of the present invention; Figure 3 This is a top view of the structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the movable block and Z-shaped water guide pipe structure of the present invention; Figure 6 This is a front view schematic diagram of the eccentric shaft and hollow vertical plate of the present invention; Figure 7 This is a rear view schematic diagram of the hollow horizontal plate and connecting plate of the present invention; Figure 8 This is a schematic cross-sectional view of the exhaust pipe structure of the present invention; Figure 9 This is a schematic diagram of the drive rod and shift fork structure of the present invention; In the diagram: 1. Base, 2. Charging pile, 3. Cover plate, 4. Rotating rod, 5. Constant force spring winch, 6. Rewind roller, 7. Stainless steel wire, 8. Movable ring, 9. Annular groove, 10. Annular flame-retardant blanket, 11. Guide mechanism, 1101. Guide frame, 1102. Guide wheel, 12. Locking mechanism, 1201. Slide groove, 1202. Movable block, 1203. Wedge-shaped clip, 1204. Spring, 13. Sprinkler mechanism, 1301. Z-shaped water guide pipe, 1302. Telescopic insertion pipe, 1303. Barb, 1304. Annular water tank, 1305. Drain nozzle, 1306. Sealing silicone, 14. Fire extinguisher, 15. Exhaust pipe. 16. Eccentric disc; 17. Eccentric shaft; 18. Fixed block; 19. Swinging mechanism; 1901. Hollow vertical plate; 1902. Nozzle; 1903. Hose; 20. Pressure relief mechanism; 2001. Hollow horizontal plate; 2002. Top rod; 2003. Slider; 2004. Pressure relief plate; 21. Exhaust control mechanism; 2101. Connecting plate; 2102. Movable rod; 2103. Conical flow restrictor; 2104. Flow restrictor ring; 22. Ball valve; 23. Gear; 24. Drive rod; 25. Rack; 26. Drive mechanism; 2601. Thermal sleeve; 2602. Piston rod; 2603. Shift fork; 2604. Guide rod. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figure 1-9 The present invention provides a technical solution: A charging pile with multiple emergency fire extinguishing structures includes: a charging pile 2 fixed at the top midpoint of a base 1, and a cover plate 3 fixed at the top of the charging pile 2; a rotating rod 4 installed on the upper inner side of the charging pile 2, with constant force spring winches 5 installed on both sides of the rotating rod 4; the constant force spring winches 5 are fixed to both ends of the inner wall of the charging pile 2, and can provide rotational power for the rotating rod 4; after a fire is triggered, the rotating rod 4 is driven to rotate synchronously; winding rollers 6 are fixed at both ends of the rotating rod 4, and the winding rollers 6 are connected to a movable ring 8 through stainless steel wires 7; when the rotating rod 4 rotates, it drives the winding rollers 6 to wind and unwind the stainless steel wires 7, thereby pulling the movable ring 8 to complete the lifting and lowering action; an annular groove 9 is opened on the base 1, the movable ring 8 is set in the annular groove 9, and an annular flame-retardant blanket 10 is fixed in the annular groove 9; and The top of the annular flame-retardant blanket 10 is connected to the movable ring 8; the annular groove 9 is used to store the annular flame-retardant blanket 10 in the non-activated state, without obstructing the normal operation path such as plugging and unplugging the charging gun and personnel maintenance, and does not affect the normal daily charging use of the charging pile. During the upward movement of the movable ring 8, the annular flame-retardant blanket 10 is lifted to completely wrap around the charging pile 2, forming an outer oxygen-barrier fire extinguishing barrier. The top of the charging pile 2 is equipped with a guide mechanism 11 for guiding the stainless steel wire 7. The guide mechanism 11 can constrain the movement trajectory of the stainless steel wire 7. The cover plate 3 is equipped with a locking mechanism 12 for locking the movable ring 8 after it is lifted. The locking mechanism 12 can lock the movable ring 8 after the annular flame-retardant blanket 10 completely surrounds the charging pile 2. A fire extinguisher 14 is fixed inside the charging pile 2, and the top of the fire extinguisher 14 is... An exhaust pipe 15 is fixed, and the fire extinguisher 14 is used to store the extinguishing medium. The exhaust pipe 15 serves as a channel for delivering the extinguishing medium outward. An eccentric disc 16 is symmetrically fixed at the midpoint of the rotating rod 4, and the two sets of eccentric discs 16 are connected by an eccentric shaft 17. When the rotating rod 4 rotates, it synchronously drives the eccentric discs 16 and the eccentric shaft 17 to rotate together, thereby realizing the linkage operation of multiple functional mechanisms. A fixing block 18 is fixed on the inner top of the charging pile 2. The fixing block 18 provides a sliding and rotating installation reference for the swing mechanism 19 and the pressure relief mechanism 20. A swing mechanism 19 is provided on the outside of the eccentric shaft 17 to increase the extinguishing range, and a pressure relief mechanism 20 is also provided on the outside of the eccentric shaft 17 to prevent high pressure inside the charging pile 2. The eccentric shaft 17 synchronously drives the swing mechanism 19 to increase the extinguishing agent spray range. The system includes a pressure relief mechanism 20 for dynamic pressure relief. A ball valve 22 is located inside the lower part of the exhaust pipe 15, and a gear 23 is connected to the outside of the ball valve 22 via a valve stem. The ball valve 22 controls the flow of the extinguishing medium, and the gear 23 transmits the power to open and close the ball valve 22. A drive rod 24 is located inside the charging pile 2, and a rack 25 is fixed to the side of the drive rod 24. The rack 25 meshes with the gear 23. When the drive rod 24 moves linearly, it drives the rack 25 to move synchronously. The meshing gear 23 rotates to complete the opening action of the ball valve 22. A drive mechanism 26 is located on the top of the inner side of the charging pile 2. The drive mechanism 26 is a heat-sensitive trigger component. Under high temperature conditions, it simultaneously unlocks the eccentric shaft 17 and drives the ball valve 22 to release the extinguishing medium. The entire multi-stage extinguishing structure starts and operates synchronously.

[0018] Furthermore, the internal heating of the charging pile 2 triggers the drive mechanism 26, and the drive rod 24 drives the rack 25 to mesh with the gear 23 to rotate, opening the ball valve 22 in the exhaust pipe 15, and the fire extinguisher 14 releases the extinguishing medium; at the same time, the drive mechanism 26 releases the lock of the fork 2603 on the eccentric shaft 17, and the rotating rod 4 rotates under the drive of the constant force spring winch 5, the winding roller 6 winds up the stainless steel wire 7 and lifts the movable ring 8, pulling up the annular flame-retardant blanket 10 in the annular groove 9 to completely wrap the base 1 and the charging pile 2 to form a sealed oxygen-isolated space; the rotating rod 4 synchronously drives the eccentric disk 16 and the eccentric shaft 17 to rotate, synchronously driving the swing mechanism 19 to swing the nozzle to increase the range of spraying the extinguishing medium and driving the pressure relief mechanism 20 to open the pressure relief port to release the internal high pressure during the rising stage of the flame-retardant blanket. After the annular flame-retardant blanket 10 rises to the position, the locking mechanism 12 locks the movable ring 8, the eccentric shaft 17 stops driving the pressure relief mechanism 20 to close the pressure relief port, and the sealed cavity retains the extinguishing medium to continuously suppress combustion, forming a multi-layered emergency fire protection system.

[0019] It should be noted that the constant force spring winch 5 and the rotating rod 4 can achieve synchronous rotation using conventional transmission assembly methods such as key connection, interference fit, and flange locking. The output torque range of a single constant spring is 3N·m to 12N·m. The torque coefficient is determined by the thickness and width of the steel strip and the inner diameter of the volute. A constant force spring with equal stress forming process is selected. In normal standby, the spring is continuously in a state of stored force winding. The internal stress of the steel strip is evenly distributed. It is not easy to produce plastic deformation in the long-term stored force state, and it has long-term anti-fatigue characteristics. It will not have problems with torque attenuation or elastic failure due to continuous stored force over the years. The output torque and rotation speed of the constant force spring winch 5 can be adapted and selected according to the overall size of the charging pile 2, the weight of the annular flame retardant blanket 10, and the lifting resistance of the movable ring 8.

[0020] Please see Figure 1 and Figure 3 In this embodiment: the guiding mechanism 11 includes a guide frame 1101, which is fixed to the top of the charging pile 2. The guide frame 1101 is H-shaped. Two sets of guide wheels 1102 are respectively provided on both sides of the guide frame 1101. The guide wheels 1102 are in contact with the stainless steel wire 7. The two ends of the stainless steel wire 7 pass through the charging pile 2 and the cover plate 3 respectively. The guide wheels 1102 fit the stainless steel wire 7 to reduce sliding friction, limit and guide, prevent the stainless steel wire 7 from deviating and getting tangled, and ensure that the moving ring 8 rises and falls smoothly without jamming throughout the entire process.

[0021] Furthermore, during the lifting and lowering process of the stainless steel wire 7 by the take-up roller 6 pulling the movable ring 8, it slides against the multiple sets of guide wheels 1102 on the H-shaped guide frame 1101. The guide wheels 1102 limit and support the stainless steel wire 7, restrict the lateral deviation of the wire, reduce the sliding friction resistance of the wire, and prevent the stainless steel wire 7 from getting tangled, stuck, or falling off the track, thus ensuring that the take-up roller 6 can smoothly and stably take up and release the wire.

[0022] Please see Figure 3 , Figure 4 and Figure 5 In this embodiment: the locking mechanism 12 includes a slide groove 1201, which is formed on the cover plate 3. A movable block 1202 is slidably connected in the slide groove 1201. A wedge-shaped clip 1203 is fixed to one bottom end of the movable block 1202, and a spring 1204 is fixed to the side of the movable block 1202. The spring 1204 is fixedly connected to the inner wall of the slide groove 1201. The slide groove 1201 restricts the sliding stroke of the movable block 1202. The spring 1204 continuously pushes the movable block 1202, so that the wedge-shaped clip 1203 can automatically engage and lock the movable ring 8. A spraying mechanism 13 for spraying the annular flame-retardant blanket 10 is also provided on the movable block 1202. The spraying mechanism 13 moves synchronously with the movable block 1202. After completing the locking action, it automatically connects the water circuit to continuously cool the annular flame-retardant blanket 10 with water, forming an outer second layer of fire extinguishing protection.

[0023] Furthermore, when the movable ring 8 rises to the height of the cover plate 3 along with the annular flame-retardant blanket 10, the movable ring 8 squeezes the wedge-shaped card 1203 and pushes the movable block 1202 along the slide groove 1201 to compress the spring 1204 and retract. After the movable ring 8 completely passes the wedge-shaped card 1203, the spring 1204 rebounds and pushes the movable block 1202 to reset. The wedge-shaped card 1203 locks on the lower side of the movable ring 8, continuously maintaining the closed state of the annular flame-retardant blanket 10. During the translation of the movable block 1202, the spray mechanism 13 integrated on it moves synchronously to the side of the annular water tank 1304, automatically connecting to the water supply circuit, and continuously spraying cooling water on the annular flame-retardant blanket 10 to achieve double fire protection of outer oxygen isolation and water cooling.

[0024] Please see Figure 3 , Figure 4 and Figure 5In this embodiment: the spraying mechanism 13 includes a Z-shaped water guide pipe 1301, which is fixed to the movable block 1202. A telescopic insertion pipe 1302 is provided at the top of the Z-shaped water guide pipe 1301. Several sets of barbs 1303 are fixed to the outer wall of the telescopic insertion pipe 1302. The Z-shaped water guide pipe 1301 is responsible for transporting cooling water. The telescopic insertion pipe 1302 moves with the movable block 1202 to complete the water supply channel connection. An annular water tank 1304 is fixed to the top of the cover plate 3, and several sets of drain nozzles 1305 are fixed to the inner side of the annular water tank 1304 for drainage. The nozzle 1305 has a sealing silicone 1306 fixed inside, and the sealing silicone 1306 is horizontally aligned with the telescopic tube 1302. The barbs 1303 can lock the inner wall of the drain nozzle 1305. After the telescopic tube 1302 is inserted, it will not follow the return of the movable block 1202 to ensure the continuous connection of the water circuit and prevent the cooling water from leaking. The annular water tank 1304 stores the cooling water required for spraying. The sealing silicone 1306 normally blocks the drain nozzle 1305. After the telescopic tube 1302 punctures the sealing silicone 1306, the water circuit is opened, and the cooling water is sprayed downwards onto the surface of the annular flame-retardant blanket 10.

[0025] Furthermore, when the movable block 1202 is locked in place by the wedge-shaped card 1203, it drives the telescopic insertion tube 1302 at the top of the Z-shaped water guide tube 1301 to move horizontally, piercing the sealing silicone 1306 inside the drain nozzle 1305 and inserting it into the water supply channel; the barbs 1303 on the outer wall of the telescopic insertion tube 1302 clamp the inner wall of the drain nozzle 1305, so even if the movable block 1202 has a tendency to return, the telescopic insertion tube 1302 will not fall out of the drain nozzle 1305, and the water circuit remains continuously connected; the cooling water inside the annular water tank 1304 is sprayed downwards onto the surface of the annular flame-retardant blanket 10 through the drain nozzle 1305, the telescopic insertion tube 1302, and the Z-shaped water guide tube 1301, continuously reducing the temperature of the flame-retardant blanket and improving the flame-retardant effect.

[0026] Please see Figure 2 , Figure 6 and Figure 7 In this embodiment: the swing mechanism 19 includes a hollow vertical plate 1901. The top of the hollow vertical plate 1901 is connected to the fixed block 18 through a bearing. The eccentric shaft 17 is located inside the hollow vertical plate 1901. The fixed block 18 supports the hollow vertical plate 1901 to achieve reciprocating swing. The eccentric shaft 17 continuously rotates and moves the hollow vertical plate 1901 to produce reciprocating motion. A nozzle 1902 is fixed at the bottom of the hollow vertical plate 1901. The nozzle 1902 is connected to the exhaust pipe 15 through a hose 1903. The hose 1903 is adapted to the displacement generated by the reciprocating swing of the nozzle 1902. The extinguishing medium is swept and sprayed from the nozzle 1902 through the exhaust pipe 15 and the hose 1903, thereby increasing the spray range.

[0027] Furthermore, the eccentric shaft 17 rotates synchronously with the rotating rod 4, and the outer wall of the eccentric shaft 17 continuously moves the hollow vertical plate 1901 back and forth. The hollow vertical plate 1901 swings back and forth left and right with the bearing connected to the fixed block 18 as the fulcrum. The nozzle 1902 at the bottom of the hollow vertical plate 1901 swings synchronously. The extinguishing medium output by the fire extinguisher 14 is delivered to the nozzle 1902 through the exhaust pipe 15 and the hose 1903. With the help of the reciprocating sweeping of the nozzle, the coverage of the medium spray is effectively improved, better covering the internal components and wiring area of ​​the charging pile 2, and accelerating the extinguishing of the initial open flame inside the equipment.

[0028] Please see Figure 2 , Figure 6 and Figure 7 In this embodiment: the pressure relief mechanism 20 includes a hollow horizontal plate 2001, one end of which is fixed with a top rod 2002, and the side of the top rod 2002 is slidably connected to the fixed block 18 via a slider 2003. When the eccentric shaft 17 rotates, it pushes the hollow horizontal plate 2001 to slide vertically. The slider 2003 cooperates with the fixed block 18 to guide the movement, and simultaneously drives the top rod 2002 to move vertically. The eccentric shaft 17 is located inside the hollow horizontal plate 2001. A pressure relief port is provided at the top of the charging pile 2, and a pressure relief plate is provided in the pressure relief port. 2004, the pressure relief plate 2004 is fixedly connected to the push rod 2002. The push rod 2002 pushes open the pressure relief plate 2004 to release the internal high temperature and high pressure gas. After the annular flame retardant blanket 10 closes and locks, the eccentric shaft 17 stops pushing. The pressure relief plate 2004 falls back to close the pressure relief port. An exhaust control mechanism 21 for adjusting the exhaust flow is also provided on one side of the hollow horizontal plate 2001. The horizontal displacement of the hollow horizontal plate 2001 synchronously drives the exhaust control mechanism 21, and the mechanical stroke synchronously adjusts the size of the internal medium flow section of the exhaust pipe 15.

[0029] Furthermore, the eccentric shaft 17 rotates synchronously with the rotating rod 4, and the outer wall of the eccentric shaft 17 continuously pushes the hollow horizontal plate 2001 to slide vertically, which simultaneously drives the top rod 2002 to push outward to open the pressure relief plate 2004 at the pressure relief port of the charging pile 2, forming a pressure relief channel to promptly discharge high-temperature and high-pressure gas and prevent the shell from bulging and exploding due to pressure. When the annular flame-retardant blanket 10 rises to the position and the movable ring 8 is locked, the rotating rod 4 stops rotating, the eccentric shaft 17 no longer pushes the hollow horizontal plate 2001, the pressure relief plate 2004 falls back to close the pressure relief port, and the fire extinguishing medium is retained in the cavity for long-term flame suppression. When the hollow horizontal plate 2001 moves laterally, it simultaneously drives the side exhaust control mechanism 21 to adjust the medium flow area of ​​the exhaust pipe 15.

[0030] Please see Figure 7 and Figure 8In this embodiment: the exhaust control mechanism 21 includes a connecting plate 2101, which is fixed to the side of the hollow horizontal plate 2001. A movable rod 2102 is fixed to one end of the connecting plate 2101. When the hollow horizontal plate 2001 moves, it drives the connecting plate 2101 and the movable rod 2102 to rise and fall synchronously. The movable rod 2102 is installed through the top of the exhaust pipe 15. A conical flow limiting head 2103 is fixed to the movable rod 2102. A flow limiting ring 2104 is fixed inside the exhaust pipe 15. The conical flow limiting head 2103 moves relative to the flow limiting ring 2104 to change the flow area. During the rising stage of the flame-retardant blanket, the flow cross section narrows and the spray rate is slowed down. Under the premise that the total filling amount of the extinguishing agent remains unchanged, the spray time is extended so that the extinguishing medium remains in the cavity for a long time to suppress the reignition of the fire.

[0031] Furthermore, when the hollow horizontal plate 2001 moves vertically driven by the eccentric shaft 17, it simultaneously drives the connecting plate 2101 and the movable rod 2102 to rise and fall. The conical flow-limiting head 2103 at the end of the movable rod 2102 simultaneously changes the flow gap between it and the flow-limiting ring 2104 inside the exhaust pipe 15, thereby slowing down the spray velocity of the extinguishing medium and extending the overall spray duration under the condition that the total filling amount of the medium in the fire extinguisher 14 remains unchanged.

[0032] Please see Figure 6 , Figure 7 and Figure 9 In this embodiment: the drive mechanism 26 includes a thermal sleeve 2601, inside which is a piston rod 2602, which is connected to the drive rod 24. When the thermal sleeve 2601 is heated and expands, it pushes the piston rod 2602 downward, which in turn drives the drive rod 24 to move linearly. A fork 2603 for locking the eccentric shaft 17 is fixed laterally at the top of the drive rod 24. The fork 2603 normally locks the eccentric shaft 17. When a fire is triggered, it is released as the drive rod 24 moves downward, and the eccentric shaft 17 can rotate freely. A guide rod 2604 is also fixed at the top of the inner side of the charging pile 2, and the guide rod 2604 passes through the fork 2603 and is slidably connected to it. The guide rod 2604 constrains the sliding trajectory of the fork 2603, ensuring that the unlocking action is smooth and without deviation, and avoiding the mechanism from jamming.

[0033] Furthermore, when the internal temperature of the charging pile 2 rises to a dangerous threshold, the heat-sensitive sleeve 2601 expands and deforms due to heat, pushing the internal piston rod 2602 downward. The piston rod 2602 drives the drive rod 24 to move downward in the vertical direction. The guide rod 2604 constrains the shift fork 2603 to slide smoothly downward. The shift fork 2603 disengages from the eccentric shaft 17 and is unlocked. The eccentric shaft 17 and the rotating rod 4 can rotate freely to start the entire fire extinguishing linkage mechanism. At the same time, the rack 25 on the side of the drive rod 24 moves downward synchronously and meshes with the gear 23 to rotate, driving the ball valve 22 to open and release the fire extinguishing medium.

[0034] It should be noted that the thermal sleeve 2601 is a closed hollow cylindrical structure. The cavity is filled with a thermal expansion medium, which completely covers the top pressure section of the piston rod 2602. Suitable thermal expansion media can be phase change paraffin, thermal expansion silicone oil, thermal expansion gel, low melting point thermal expansion composite paste, etc. After heating in the closed cavity, driving pressure can be quickly formed.

[0035] The workflow of this embodiment is as follows: When the internal temperature of the charging pile 2 rises to the preset danger threshold, the thermal expansion medium encapsulated inside the thermal sleeve 2601 expands in volume due to heat. The expansion of the medium in the sealed cavity generates an axial thrust that pushes the piston rod 2602 downward. The piston rod 2602 simultaneously drives the drive rod 24 to move vertically downward along the guide rod 2604. The fork 2603 at the top of the drive rod 24 slides down and disengages from the eccentric shaft 17 to release the locking constraint. At the same time, the rack 25 on the side of the drive rod 24 moves down synchronously to mesh with the gear 23 to rotate. The gear 23 drives the ball valve 22 to open through the valve stem. The extinguishing medium stored inside the fire extinguisher 14 is transported out through the exhaust pipe 15. The constant force spring winches 5 symmetrically installed at both ends of the rotating rod 4 release the stored torque synchronously. The two sets of winches drive the rotating rod 4 to rotate at a uniform speed. The winding rollers 6 at both ends of the rotating rod 4 simultaneously wind up the stainless steel wire 7. The stainless steel wire 7 pulls the movable ring 8 upward. The annular flame-retardant blanket 10 stored in the annular groove 9 of the base 1 is raised synchronously with the movable ring 8. When the annular flame-retardant blanket 10 is not triggered by fire, it is completely stored inside the annular groove 9 and does not affect the daily charging and plugging operation. During the lifting process, the annular flame-retardant blanket 10 gradually and completely covers the main body of the charging pile 2, forming a sealed oxygen-barrier protective cavity. When the rotating rod 4 rotates, it simultaneously drives the eccentric disk 16 and the eccentric shaft 17, which are symmetrically arranged at the center point, to rotate synchronously. On the one hand, the eccentric shaft 17 continuously reciprocates to move the hollow vertical plate 1901. The hollow vertical plate 1901 swings back and forth with the bearing on the fixed block 18 as the fulcrum, driving the bottom nozzle 1902 to sweep synchronously. The extinguishing medium is delivered to the nozzle 1902 through the hose 1903. With the help of the reciprocating motion of the nozzle, the coverage area of ​​the medium spray is effectively increased, better covering the internal components and wiring areas of the charging pile 2 to accelerate the extinguishing of the initial open flame. On the other hand, the eccentric shaft 17 pushes the hollow horizontal plate 20. 01 Slides vertically along slider 2003 on fixed block 18. Hollow horizontal plate 2001 drives top rod 2002 to open pressure relief plate 2004 at top pressure relief port of charging pile 2, timely discharge of high temperature and high pressure gas, avoid shell expansion and explosion risk. Hollow horizontal plate 2001 horizontal displacement synchronously drives side connecting plate 2101 and movable rod 2102 to rise and fall synchronously. Conical flow limiting head 2103 at end of movable rod 2102 moves vertically back and forth synchronously, constantly changing the flow gap with the flow limiting ring 2104 inside exhaust pipe 15. Under the premise that the total filling amount of medium in fire extinguisher 14 remains unchanged, the overall spraying time is extended, allowing the fire extinguishing medium to remain in the cavity for a longer time to suppress reignition. When the movable ring 8 rises to the height of the cover plate 3 along with the annular flame-retardant blanket 10, the movable ring 8 presses against the wedge-shaped clip 1203 of the locking mechanism 12, pushing the movable block 1202 to retract along the slide groove 1201 and compress the spring 1204. After the movable ring 8 completely passes the wedge-shaped clip 1203, the spring 1204 rebounds and pushes the movable block 1202 back to its original position. The wedge-shaped clip 1203 engages below the movable ring 8 to complete the locking, continuously maintaining the closed state of the annular flame-retardant blanket 10. During the translation of the movable block 1202, the telescopic insertion tube 1302 at the top of the Z-shaped water guide pipe 1301 moves horizontally, piercing the internal sealing silicone 1 of the drain nozzle 1305. 306 is inserted into the water supply channel. The barbs 1303 on the outer wall of the telescopic tube 1302 clamp the inner wall of the drain nozzle 1305, so that the telescopic tube 1302 will not come out to ensure the continuous conduction of water. The cooling water inside the annular water tank 1304 at the top of the cover plate 3 is sprayed downwards through the drain nozzle 1305, the telescopic tube 1302, and the Z-shaped water guide pipe 1301 to the surface of the annular flame-retardant blanket 10 for continuous cooling. After the annular flame-retardant blanket 10 is locked in place, the rotating rod 4 stops rotating, the eccentric shaft 17 no longer pushes the hollow horizontal plate 2001, the pressure relief plate 2004 falls back to close the pressure relief port, and the sealed cavity retains a sufficient amount of extinguishing medium to effectively isolate oxygen and suppress residual fire.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A charging pile equipped with multiple emergency fire extinguishing structures, characterized in that, include: A base (1) is provided with a charging pile (2) fixed at the top midpoint, and a cover plate (3) is fixed at the top of the charging pile (2). A rotating rod (4) is provided on the upper inner side of the charging pile (2), and a constant force spring winch (5) is provided on both sides of the rotating rod (4). The constant force spring winch (5) is fixed to both ends of the inner wall of the charging pile (2). A winding roller (6) is fixed at both ends of the rotating rod (4), and the winding roller (6) is connected to the movable ring (8) through a stainless steel wire (7). An annular groove (9) is provided on the base (1), and the movable ring (8) is provided in the annular groove (9). An annular flame-retardant blanket (10) is fixed in the annular groove (9), and the top of the annular flame-retardant blanket (10) is connected to the movable ring (8). The top of the charging pile (2) is provided with a guide mechanism (11) for guiding the stainless steel wire (7), and the cover plate (3) is provided with a locking mechanism (12) for locking the movable ring (8) after it is lifted. The charging pile (2) is provided with a fire extinguisher (14) inside, and the top of the fire extinguisher (14) is provided with an exhaust pipe (15). The rotating rod (4) is symmetrically provided with an eccentric disc (16) at the midpoint, and the two sets of eccentric discs (16) are connected by an eccentric shaft (17). The top of the inner side of the charging pile (2) is provided with a fixing block (18). The eccentric shaft (17) is provided with a swing mechanism (19) for increasing the fire extinguishing range on the outside, and the eccentric shaft (17) is also provided with a pressure relief mechanism (20) for preventing high pressure inside the charging pile (2) on the outside. A ball valve (22) is provided at the bottom inside the exhaust pipe (15), and a gear (23) is connected to the outside of the ball valve (22) through the valve stem. A drive rod (24) is provided inside the charging pile (2), and a rack (25) is fixed on the side of the drive rod (24). The rack (25) meshes with the gear (23). A drive mechanism (26) is provided at the top inside the charging pile (2).

2. A charging pile equipped with multiple emergency fire extinguishing structures according to claim 1, characterized in that, The guiding mechanism (11) includes a guide frame (1101), which is fixed to the top of the charging pile (2). The guide frame (1101) is H-shaped. Two sets of guide wheels (1102) are respectively provided on both sides of the guide frame (1101). The guide wheels (1102) are in contact with the stainless steel wire (7). The two ends of the stainless steel wire (7) pass through the charging pile (2) and the cover plate (3) respectively.

3. A charging pile equipped with multiple emergency fire extinguishing structures according to claim 1, characterized in that, The locking mechanism (12) includes a slide (1201), which is opened on the cover plate (3). A movable block (1202) is slidably connected in the slide (1201). A wedge-shaped card (1203) is fixed at one bottom end of the movable block (1202), and a spring (1204) is fixed on the side of the movable block (1202). The spring (1204) is fixedly connected to the inner wall of the slide (1201). A spraying mechanism (13) for spraying the annular flame-retardant blanket (10) is also provided on the movable block (1202).

4. A charging pile equipped with multiple emergency fire extinguishing structures according to claim 3, characterized in that, The spraying mechanism (13) includes a Z-shaped water guide pipe (1301), which is fixed to the movable block (1202). A telescopic insertion pipe (1302) is provided at the top of the Z-shaped water guide pipe (1301). Several sets of barbs (1303) are fixed on the outer wall of the telescopic insertion pipe (1302). An annular water tank (1304) is fixed at the top of the cover plate (3). Several sets of drain nozzles (1305) are fixed on the inner side of the annular water tank (1304). A sealing silicone (1306) is fixed inside the drain nozzle (1305), and the sealing silicone (1306) is horizontally corresponding to the telescopic insertion pipe (1302).

5. A charging pile equipped with multiple emergency fire extinguishing structures according to claim 1, characterized in that, The swing mechanism (19) includes a hollow vertical plate (1901), the top of which is connected to a fixed block (18) via a bearing, the eccentric shaft (17) is located inside the hollow vertical plate (1901), and a nozzle (1902) is fixed at the bottom of the hollow vertical plate (1901), and the nozzle (1902) is connected to an exhaust pipe (15) via a hose (1903).

6. A charging pile equipped with multiple emergency fire extinguishing structures according to claim 1, characterized in that, The pressure relief mechanism (20) includes a hollow horizontal plate (2001), one end of which is fixed with a top rod (2002), and the side of the top rod (2002) is slidably connected to the fixed block (18) via a slider (2003). The eccentric shaft (17) is located inside the hollow horizontal plate (2001). The top of the charging pile (2) is provided with a pressure relief port, and a pressure relief plate (2004) is provided in the pressure relief port. The pressure relief plate (2004) is fixedly connected to the top rod (2002). An exhaust control mechanism (21) for adjusting the exhaust flow is also provided on one side of the hollow horizontal plate (2001).

7. A charging pile equipped with multiple emergency fire extinguishing structures according to claim 6, characterized in that, The exhaust control mechanism (21) includes a connecting plate (2101), which is fixed to the side of the hollow horizontal plate (2001). A movable rod (2102) is fixed at one end of the connecting plate (2101). The movable rod (2102) is installed through the top of the exhaust pipe (15), and a conical flow limiting head (2103) is fixed on the movable rod (2102). A flow limiting ring (2104) is fixed inside the exhaust pipe (15).

8. A charging pile equipped with multiple emergency fire extinguishing structures according to claim 1, characterized in that, The drive mechanism (26) includes a thermal sleeve (2601), inside which a piston rod (2602) is provided, and the piston rod (2602) is connected to the drive rod (24). The top of the drive rod (24) is laterally fixed with a fork (2603) for locking the eccentric shaft (17). The top of the inner side of the charging pile (2) is also fixed with a guide rod (2604), and the guide rod (2604) passes through the fork (2603) and is slidably connected to it.

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