A distribution box with fire extinguishing function

Abstract

This invention discloses a distribution box with fire extinguishing function, including a box body. Electrical components are installed inside the box body. Two sets of terminals are fixedly installed on the inner wall of the box body, arranged symmetrically on both sides. Several equally spaced circular holes are opened on the terminals. A power-off mechanism is provided on the terminals. A door is hinged to the front of the box body. The distribution box of this invention uses the thermal expansion of silicone oil to drive the power-off mechanism and the sprinkler head to act in stages, realizing independent temperature sensing and physical triggering in multiple areas within the distribution box. When local overheating occurs, the power supply to the corresponding area's terminals is precisely cut off to prevent the temperature rise from escalating. When the temperature continues to run out of control and a fire occurs, the corresponding area's sprinkler head is automatically opened to target and release the fire extinguishing agent, avoiding waste and secondary pollution caused by spraying the entire box. The entire triggering process is mechanically driven by temperature changes and does not require external power support. It operates reliably in high-temperature fire environments, significantly improving the accuracy and safety of fire prevention and control in the distribution box.

Description

Technical Field

[0001] This invention relates to the field of power distribution equipment technology, specifically to a power distribution box with fire extinguishing function. Background Technology

[0002] Distribution boxes are core equipment in power transmission and distribution systems used for power distribution, circuit control, and overload protection. They are widely used in various scenarios such as industrial production, civil buildings, and municipal infrastructure. Their internal terminals and electrical components are energized for a long time, making them prone to local overheating due to faults such as overload, poor contact, and short circuits. This can lead to electrical fires, which can not only cause equipment damage and power outages, but also easily spread and cause larger-scale safety accidents. Therefore, fire prevention and safety protection of distribution boxes have always been a core research and development direction in the field of power equipment.

[0003] Current distribution boxes with fire protection functions generally suffer from the following technical defects: First, they mostly adopt an overall temperature sensing triggering mechanism, which cannot achieve independent and accurate temperature monitoring of multiple areas within the box. They can only trigger protective actions when the overall temperature inside the box reaches a threshold, and cannot provide targeted treatment in the early stages of local fault temperature rise. Second, they lack tiered response logic. Power outage and fire extinguishing actions are mostly triggered synchronously, which cannot achieve a step-by-step approach of power outage before fire starts and fire extinguishing after overheating. They cannot curb the escalation of temperature rise by cutting off the main switch of the entire circuit in advance. At the same time, the power outage action is mostly a full circuit main switch cut-off, which cannot accurately cut off power to the faulty local area, seriously affecting the normal power supply to non-faulty areas and resulting in poor power supply continuity. Third, the fire extinguishing mechanism is mostly a full-box coverage spray, which cannot target the local area of ​​fire with fire extinguishing agent. This not only wastes fire extinguishing agent, but also causes secondary contamination to electrical components in non-faulty areas, increasing equipment recovery costs. Moreover, most regional spraying schemes rely on active devices such as electronic control sensors and solenoid valves, which are prone to failure in high-temperature fire environments, resulting in insufficient operational reliability.

[0004] In summary, existing distribution boxes with fire extinguishing functions still have significant technical shortcomings in areas such as precise local monitoring, graded response and handling, targeted fire extinguishing and protection, and reliable passive operation, and cannot meet the needs of distribution boxes for refined and highly reliable fire prevention and control. Summary of the Invention

[0005] The purpose of this invention is to provide a distribution box with fire extinguishing function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a distribution box with fire extinguishing function, comprising a box body, wherein electrical components are installed inside the box body, and two sets of wiring terminals arranged symmetrically on the left and right sides are fixedly installed on the inner wall of the box body, wherein several equally spaced circular holes are opened on the wiring terminals, and a power-off mechanism is provided on the wiring terminals, and a box door is hinged to the front of the box body;

[0007] Several nozzles are fixedly installed on the box door. The nozzles penetrate the inner wall of the box door and extend into the interior of the box. A horizontal tube is fixedly sleeved on the inner surface of the nozzle. The interior of the horizontal tube communicates with the interior of the nozzle. A piston rod is slidably connected inside the horizontal tube. The piston rod has a through hole and passes through the interior of the nozzle, sealing the interior of the nozzle. A connecting pipe is fixedly installed at the left end of the horizontal tube. The end of the connecting pipe away from the horizontal tube penetrates the inner wall of the box door and extends into the interior of the box. A sealing mechanism is provided inside the connecting pipe. A hydraulic pipe is fixedly installed at the end of the connecting pipe away from the horizontal tube. An inner cavity is opened inside the hydraulic pipe and filled with silicone oil. A driving mechanism is slidably connected inside the inner cavity of the hydraulic pipe.

[0008] As a further embodiment of the present invention, the driving mechanism includes a movable plug, which is slidably connected to the inner cavity of the hydraulic pipe. A push rod is movably sleeved inside the movable plug. The end of the push rod away from the movable plug extends through the inner cavity of the hydraulic pipe to the interior of the housing. A circular plate is fixedly installed on the surface of the push rod located in the inner cavity of the hydraulic pipe. A vent hole is opened on the circular plate. A first spring is fixedly installed on the end of the circular plate near the movable plug. The end of the first spring away from the circular plate is fixedly connected to the movable plug.

[0009] As a further embodiment of the present invention, the power-off mechanism includes an insulating rod, which is slidably connected to the interior of a terminal block. A conductive block is fixedly installed inside the insulating rod, and the conductive block is aligned with a circular hole on the terminal block. A second spring is fixedly installed on the surface of the rear end of the insulating rod, and the front end of the second spring is fixedly installed on the surface of the terminal block. A moving rod is rotatably connected to the outer surface of the terminal block. A push rod is located directly in front of the lower end of the moving rod. An elongated hole is provided on the moving rod, and a pressing shaft is slidably connected inside the elongated hole. The end of the pressing shaft away from the moving rod is fixedly installed at the front end of the insulating rod.

[0010] As a further aspect of the present invention, the sealing mechanism includes: A pull rod, the rear end of which passes through the hydraulic pipe and extends into the interior of the hydraulic pipe, the rear end of which is fixedly connected to the movable plug, a stop block is slidably connected to the outer surface of the pull rod, the stop block is slidably connected to the interior of the connecting pipe, a fourth spring is fixedly installed on the side of the stop block near the movable plug, and the end of the fourth spring away from the stop block is fixedly installed on the surface of the hydraulic pipe. A storage tube is fixedly installed on a connecting pipe, and the interior of the storage tube is connected to the interior of the connecting pipe. The surface of the baffle abuts against the bottom end of the storage tube. A partition is fixedly installed inside the storage tube, which divides the interior of the storage tube into two cavities. One cavity is filled with sodium bicarbonate, and the other cavity is filled with aluminum sulfate solution.

[0011] As a further embodiment of the present invention, a support is fixedly installed on the surface of the box door, and a fire extinguishing agent bottle is placed on the support. The outlet of the fire extinguishing agent bottle is sealed and connected to a delivery pipe. The delivery pipe passes through the surface of the box door and extends into the interior of the box door. A plurality of nozzles are equidistantly installed on the delivery pipe, and the interior of the nozzles is connected to the interior of the delivery pipe.

[0012] As a further embodiment of the present invention, a plurality of pipe clamps are fixedly installed on the inner wall of the box door. The pipe clamps are elastic clamps that are elastically clamped to the outer wall of the conveying pipe.

[0013] As a further embodiment of the present invention, a clamp adapted to the shape of the fire extinguishing agent bottle is hinged on the support, the free end of the clamp is fixedly connected to the support, and the clamp and the support together form a clamping cavity, in which the fire extinguishing agent bottle is fixed.

[0014] As a further embodiment of the present invention, a battery and an alarm are fixedly installed on the surface of the door, and a transmitter is fixedly installed on the top of the door. Both the alarm and the transmitter are electrically connected to the battery.

[0015] As a further embodiment of the present invention, a top rod is fixedly installed at the right end of the piston rod. The top rod is slidably connected to the inside of the horizontal tube. The end of the top rod away from the piston rod passes through the inner wall of the horizontal tube and extends to the outside of the horizontal tube. Two fixing plates are fixedly installed on the inner wall of the box door in a symmetrical arrangement. Buttons corresponding to the top rods are fixedly installed on the surface of the fixing plates. The buttons are electrically connected to the alarm.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The distribution box of the present invention uses the thermal expansion of silicone oil to drive the power-off mechanism and the staged action of the sprinkler head to realize independent temperature sensing and physical triggering in multiple areas within the distribution box. When local overheating occurs, the power supply to the corresponding area's wiring terminals is precisely cut off to prevent the temperature rise from escalating. When the temperature continues to run out of control and fire occurs, the sprinkler head in the corresponding area is automatically activated to release the extinguishing agent in a targeted manner, avoiding waste and secondary pollution caused by spraying the entire box. The entire triggering process is mechanically driven by temperature changes and does not require external power support. It operates reliably in high-temperature fire environments and significantly improves the accuracy and safety of fire prevention and control in the distribution box.

[0017] 2. The distribution box of the present invention achieves quick disassembly and stable fixation of the fire extinguishing agent cylinder through the cooperation of clamps and support bases. Pipe clamps provide multi-point limiting support for the delivery pipeline to prevent the pipeline from shaking and loosening, ensuring the smooth and reliable delivery path of the fire extinguishing agent. When the fire is extinguished, light and sound alarms and remote alarm information are triggered simultaneously, which facilitates rapid emergency response by operation and maintenance personnel. The overall structure is compact and has strong adaptability and practicality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is a schematic diagram of the door opening state structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the cabinet door of the present invention; Figure 5 This is a schematic diagram of the structure of the fire extinguishing agent bottle of the present invention; Figure 6 This is a schematic diagram of the conveying pipe of the present invention; Figure 7 This is a partial cross-sectional view of the present invention. Figure 1 ; Figure 8 This is a partial cross-sectional view of the present invention. Figure 2 ; Figure 9 This is a partial cross-sectional view of the present invention. Figure 3 ; Figure 10 This is a schematic diagram of the power-off mechanism of the present invention; Figure 11 This is an exploded structural diagram of the power-off mechanism of the present invention; Figure 12 This is a schematic diagram of the structure of the support base of the present invention; Figure 13 This is a schematic diagram of a partial explosion structure of the present invention; Figure 14 This is a schematic diagram of the button of the present invention.

[0019] In the diagram: 1. Box body; 2. Box door; 3. Support block; 4. Battery; 5. Delivery pipe; 6. Nozzle; 7. Horizontal pipe; 8. Connecting pipe; 9. Hydraulic pipe; 10. Movable plug; 11. Push rod; 12. First spring; 13. Circular plate; 14. Terminal block; 15. Insulating rod; 16. Conductive block; 17. Second spring; 18. Pipe clamp; 19. Support seat; 20. Extinguishing agent bottle; 21. Clamp; 22. Bolt; 23. Button; 24. Support; 25. Alarm; 26. Transmitter; 27. Fixing plate; 28. Extrusion shaft; 29. ​​Moving rod; 30. Fixing shaft; 31. Pull rod; 32. Stop block; 33. Storage pipe; 34. Top cover; 35. Partition plate; 36. Piston rod; 37. Push rod; 38. Third spring; 39. Fourth spring. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-11 The enclosure includes a housing 1, which contains electrical components. Two sets of terminals 14 arranged symmetrically on the left and right sides are fixedly installed on the inner wall of the housing 1. Several equally spaced circular holes are opened on the terminals 14. A power-off mechanism is provided on the terminals 14. A door 2 is hinged to the front of the housing 1. Several nozzles 6 are fixedly installed on the door 2. The nozzles 6 penetrate the inner wall of the door 2 and extend into the interior of the box 1. A horizontal tube 7 is fixedly sleeved on the surface of the nozzle 6 inside the door 2. The interior of the horizontal tube 7 is connected to the interior of the nozzle 6. A piston rod 36 is slidably connected inside the horizontal tube 7. A through hole is opened on the piston rod 36. The piston rod 36 passes through the interior of the nozzle 6 and seals the interior of the nozzle 6. A connecting pipe 8 is fixedly installed on the left end of the horizontal tube 7. The end of the connecting pipe 8 away from the horizontal tube 7 penetrates the inner wall of the door 2 and extends into the interior of the box 1. A sealing mechanism is provided inside the connecting pipe 8. A hydraulic pipe 9 is fixedly installed on the end of the connecting pipe 8 away from the horizontal tube 7. An inner cavity is opened inside the hydraulic pipe 9. The inner cavity of the hydraulic pipe 9 is filled with silicone oil, and a driving mechanism is slidably connected inside the inner cavity of the hydraulic pipe 9. Specifically, the piston head of the piston rod 36 is square, and the interior of the horizontal tube 7 adopts a square design that matches the piston head of the piston rod 36.

[0022] More specifically, two sets of terminals 14 are symmetrically distributed on the inner wall of the housing 1. One purpose is to support the wiring connections of electrical components, and the other is to provide structural support and a guiding foundation for subsequent power-off actions. Several nozzles 6 are installed on the door 2, with their nozzles penetrating into the interior of the housing 1, allowing the extinguishing medium to be sprayed directionally from the side of the door 2 into the interior of the housing 1. The horizontal tube 7 fitted around the nozzle 6 provides sliding space for the piston rod 36. The piston rod 36 passes through the interior of the nozzle 6 and has a through hole. Under normal conditions, the piston rod 36 can reliably seal the interior of the nozzle 6, preventing accidental spraying of the extinguishing agent. When the piston rod 36 is driven by an external force, it can slide directionally along the interior of the horizontal tube 7, opening the nozzle 6 by aligning its own through hole with the interior of the nozzle 6. The connecting pipe 8 is... The driving medium and reaction agent for fire extinguishing are provided with a transmission channel, while the sealing mechanism is provided with installation space, realizing the controllable isolation between agent storage and the triggering channel. The hydraulic pipe 9, as the core component for passive temperature monitoring and power triggering, is filled with silicone oil that expands and contracts with changes in ambient temperature, converting the temperature signal into mechanical driving force, providing stable operating power for the drive mechanism. The overall architecture realizes the integrated integration of temperature monitoring, power failure control, and fire extinguishing execution, providing a complete structural foundation for zoned and graded passive safety protection. At the same time, the square piston head of the piston rod 36 and the square fitting design inside the horizontal tube 7 can prevent circumferential deflection during the sliding of the piston rod 36, ensuring that its upper through hole is precisely aligned with the nozzle 6, and ensuring the accuracy and reliability of the opening and closing action of the nozzle 6.

[0023] like Figures 3-9As shown, the drive mechanism includes a movable plug 10, which is slidably connected to the inner cavity of the hydraulic pipe 9. A push rod 11 is movably sleeved inside the movable plug 10. The end of the push rod 11 away from the movable plug 10 extends through the inner cavity of the hydraulic pipe 9 into the interior of the housing 1. A circular plate 13 is fixedly mounted on the surface of the push rod 11 within the inner cavity of the hydraulic pipe 9. A vent hole is provided on the circular plate 13. A first spring 12 is fixedly mounted on the end of the circular plate 13 near the movable plug 10. The end of the first spring 12 away from the circular plate 13 is fixedly connected to the movable plug 10. Specifically, the movable plug 10, as the direct force-bearing component for the expansion of the medium within the hydraulic pipe 9, can accurately convert the pressure generated by the thermal expansion of the silicone oil into a linear driving force. The push rod 11 and the movable plug 10 cooperate in transmission, synchronously transmitting the linear movement power of the movable plug 10 outwards. The circular plate 13 is fixed to the surface of the push rod 11, providing a vent hole for the first spring 12. The stable installation support, along with the vent holes, allows air to circulate freely between the movable plug 10 and the circular plate 13, preventing the formation of a closed air cavity that would hinder the movement of the movable plug 10. The circular plate 13 acts as a limit when it moves with the push rod 11 to abut against the inner wall of the hydraulic pipe 9, preventing the push rod 11 from moving further backward. This forces the movable plug 10 to slide independently against the elastic force of the first spring 12 as the silicone oil pressure continues to increase. The first spring 12, connected between the movable plug 10 and the circular plate 13, enables graded power transmission. When the temperature has not reached the ignition threshold, the spring force drives the push rod 11 and the movable plug 10 to move synchronously. When the temperature continues to rise and the pressure inside the hydraulic pipe 9 exceeds its elastic threshold, the movable plug 10 can continue to slide relative to the push rod 11. At the same time, when the temperature drops and the silicone oil contracts, the movable plug 10 can automatically reset, ensuring that the device can be reused.

[0024] like Figure 3 , Figure 10 , Figure 11As shown, the power-off mechanism includes an insulating rod 15, which is slidably connected to the inside of a terminal block 14. A conductive block 16 is fixedly installed inside the insulating rod 15, and the conductive block 16 is aligned with a circular hole on the terminal block 14. A second spring 17 is fixedly installed on the rear surface of the insulating rod 15, and the front end of the second spring 17 is fixedly installed on the surface of the terminal block 14. A moving rod 29 is rotatably connected to the outer surface of the terminal block 14. A push rod 11 is located directly in front of the lower end of the moving rod 29. An elongated hole is provided on the moving rod 29, and a sliding connection is made inside the elongated hole. The extrusion shaft 28 is fixedly installed at one end away from the moving rod 29 at the front end of the insulating rod 15. Specifically, the terminal 14 has several square holes that are adapted to the insulating rod 15. The square holes are equidistantly distributed along the axial direction of the terminal 14, and the interior of the square holes communicates with the interior of the corresponding round holes. The insulating rod 15 is slidably connected inside the square holes, and both ends of the insulating rod 15 extend to the outside of the terminal 14 through the square holes. Several fixed shafts 30 are fixedly installed on the surface of the terminal 14, and the moving rod 29 is rotatably connected to the surface of the fixed shafts 30.

[0025] More specifically, the insulating rod 15 is slidably connected to the square hole in the terminal block 14, serving as an insulating carrier for the conductive block 16 to move back and forth. Both ends extend outside the terminal block 14 for connection to an external drive component. The conductive block 16 is fixedly installed inside the insulating rod 15 and is normally aligned with the round hole on the terminal block 14. When a wire is inserted into the round hole, the conductive block 16 conducts the two wires, achieving a normal circuit connection. The front end of the second spring 17 is fixed to the surface of the terminal block 14, and the rear end is connected to the insulating rod 15. When the insulating rod 15 is pushed forward, the second spring 17 is compressed and stores energy. After the external thrust disappears, it drives the insulating rod 15 back to its original position using its own elasticity. Positioning the conductive block 16 so that it is realigned with the circular hole, the moving rod 29 is rotatably connected to the surface of the terminal 14 via the fixed shaft 30, and its lower end is located directly behind the movement path of the push rod 11. When the push rod 11 moves backward and contacts the lower end of the moving rod 29, the moving rod 29 rotates around the fixed shaft 30, converting the linear motion of the push rod 11 into rotational motion. One end of the pressing shaft 28 is fixed to the front end of the insulating rod 15, and the other end is slidably connected to the elongated hole opened on the moving rod 29. When the moving rod 29 rotates, the elongated hole exerts a pulling effect on the pressing shaft 28, thereby driving the insulating rod 15 to slide forward, thus completing the complete transmission chain from the linear displacement of the push rod 11 to the cutting of the wire by the conductive block 16.

[0026] like Figure 3 - Figure 9 As shown, the blocking mechanism includes: A pull rod 31 has its rear end passing through the hydraulic pipe 9 and extending into the interior of the hydraulic pipe 9. The rear end of the pull rod 31 is fixedly connected to the movable plug 10. A stop block 32 is slidably connected to the outer surface of the pull rod 31. The stop block 32 is slidably connected to the interior of the connecting pipe 8. A fourth spring 39 is fixedly installed on the side of the stop block 32 near the movable plug 10. The end of the fourth spring 39 away from the stop block 32 is fixedly installed on the surface of the hydraulic pipe 9. The storage tube 33 is fixedly installed on the connecting tube 8. The interior of the storage tube 33 is connected to the interior of the connecting tube 8. The surface of the stop block 32 abuts against the bottom end of the storage tube 33. A partition 35 is fixedly installed inside the storage tube 33, which divides the interior of the storage tube 33 into two cavities. One cavity is filled with sodium bicarbonate, and the other cavity is filled with aluminum sulfate solution. Specifically, a top cover 34 is threaded onto the top end of the storage tube 33. Anti-slip strips are provided on the top cover 34 and are equidistantly distributed along its circumference.

[0027] More specifically, the rear end of the pull rod 31 is fixedly connected to the movable plug 10, and the front end extends through the hydraulic pipe 9 into the connecting pipe 8, so that the axial displacement of the movable plug 10 can be directly transmitted to the sealing mechanism. The stop block 32 is slidably connected to the inside of the connecting pipe 8, and its surface abuts against the bottom end of the storage pipe 33. Under normal conditions, it serves to seal the outlet of the storage pipe 33, isolating the two reactants inside the storage pipe 33. One end of the fourth spring 39 is fixed to the side of the stop block 32 near the movable plug 10, and the other end is fixed to the surface of the hydraulic pipe 9. Under normal conditions, it applies a spring force to the stop block 32 to press against the bottom end of the storage pipe 33, ensuring the sealing reliability of the stop block 32 against the storage pipe 33. When the stop block 32 is pulled backward by the movable plug 10, the fourth spring 39 is compressed. After the external force disappears, the stop block 32 is pushed back to reset and re-seal. The storage tube 33 is fixedly installed on the connecting tube 8 and is internally connected to the connecting tube 8. Its interior is divided into two independent cavities by the partition 35, which are used to fill sodium bicarbonate and aluminum sulfate solutions respectively. The partition 35 ensures that the two substances are completely isolated and do not come into contact with each other under normal conditions. Only after the stop block 32 is removed will the two fall into the connecting tube 8 at the same time to mix and react. The top cover 34 is threaded onto the top of the storage tube 33 to facilitate the replenishment or replacement of the internal reactants. The anti-slip strip on its surface makes it convenient for the operator to screw it on.

[0028] like Figure 1 , Figures 4-6 , Figure 12 , Figure 13As shown, a support 19 is fixedly installed on the surface of the box door 2. A fire extinguishing agent bottle 20 is placed on the support 19. The outlet of the fire extinguishing agent bottle 20 is sealed and connected to a delivery pipe 5. The delivery pipe 5 passes through the surface of the box door 2 and extends into the interior of the box door 2. Several nozzles 6 are equidistantly installed on the delivery pipe 5. The interior of the nozzles 6 is connected to the interior of the delivery pipe 5. Specifically, the support 19 has an arc-shaped support surface, and the fire extinguishing agent bottle 20 is placed close to the arc-shaped support surface.

[0029] More specifically, the arc-shaped design of the support 19 increases the contact area between the support 19 and the extinguishing agent cylinder 20, making the extinguishing agent cylinder 20 more stable. The outlet of the extinguishing agent cylinder 20 is sealed and connected to the delivery pipe 5, so that the extinguishing agent stored in the cylinder can be delivered outward along the delivery pipe 5 under its own pressure. The delivery pipe 5 extends through the surface of the box door 2 and into the inside of the box door 2, and several nozzles 6 are equidistantly installed on the delivery pipe 5 and connected to its interior. This creates a complete extinguishing agent delivery path from the extinguishing agent cylinder 20 to each nozzle 6, ensuring that the extinguishing agent can be guided to each nozzle 6 inside the box door 2.

[0030] like Figures 4-6 As shown, several pipe clamps 18 are fixedly installed on the inner wall of the box door 2. The pipe clamps 18 are elastic clamps, which are elastically clamped to the outer wall of the delivery pipe 5. Specifically, the pipe clamps 18 are fixed to the inner wall of the box door 2 and are elastically clamped to the outer wall of the delivery pipe 5. This can provide multi-point limiting and support for the delivery pipe 5, preventing the delivery pipe 5 from shaking, displacing or loosening during equipment operation, and ensuring the smooth and reliable delivery path of the extinguishing agent.

[0031] like Figure 1 , Figure 12 , Figure 13 As shown, a clamp 21 adapted to the shape of the fire extinguishing agent bottle 20 is hinged to the support 19. The free end of the clamp 21 is fixedly connected to the support 19. The clamp 21 and the support 19 together form a clamping cavity, in which the fire extinguishing agent bottle 20 is fixed. Specifically, a bolt 22 is threaded onto the free end of the clamp 21, and the bolt 22 is movably connected to the support 19. The free end of the clamp 21 is fixedly connected to the support 19 through the bolt 22. The arc-shaped support surface cooperates with the clamp 21 to tightly clamp and fix the fire extinguishing agent bottle 20.

[0032] More specifically, the clamping method of the clamp 21 and the support 19 can, on the one hand, firmly restrain the fire extinguishing agent cylinder 20 to the surface of the door 2, preventing it from loosening or even falling off under the impact of opening and closing of the door 2 or equipment vibration. On the other hand, the detachable connection of the bolt 22 allows the fire extinguishing agent cylinder 20 to be easily replaced when the agent is exhausted or during regular maintenance, thus improving the maintainability of the equipment.

[0033] like Figures 1-4As shown, a battery 4 and an alarm 25 are fixedly installed on the surface of the door 2, and a transmitter 26 is fixedly installed on the top of the door 2. Both the alarm 25 and the transmitter 26 are electrically connected to the battery 4. Specifically, a support block 3 and a support 24 are fixedly installed on the surface of the door 2. The battery 4 is fixedly installed inside the support block 3, and the alarm 25 is fixedly installed inside the support 24.

[0034] More specifically, the support block 3 and the bracket 24 provide a stable mounting base for both the battery 4 and the alarm 25. The transmitter 26 is fixedly installed on the top of the door 2. Both the alarm 25 and the transmitter 26 are electrically connected to the battery 4. When an external trigger signal connects the circuit, the battery 4 supplies power to the alarm 25 and the transmitter 26. The alarm 25 emits an audible and visual alarm to alert on-site personnel, while the transmitter 26 sends alarm information to a remote terminal. This achieves dual alarm functions, both local and remote, ensuring that fire information can be transmitted in a timely manner.

[0035] like Figure 4 , Figure 7 , Figure 9 , Figure 14 As shown, a push rod 37 is fixedly installed on the right end of the piston rod 36. The push rod 37 is slidably connected to the inside of the horizontal tube 7. The end of the push rod 37 away from the piston rod 36 passes through the inner wall of the horizontal tube 7 and extends to the outside of the horizontal tube 7. Two fixed plates 27 are fixedly installed on the inner wall of the door 2, which are symmetrically distributed on the left and right. Buttons 23 corresponding to the push rods 37 are fixedly installed on the surface of the fixed plates 27. The buttons 23 are electrically connected to the alarm 25. Specifically, a third spring 38 is fixedly installed on the surface of the push rod 37 near the piston rod 36. The end of the third spring 38 away from the push rod 37 is fixedly installed on the inner wall of the horizontal tube 7.

[0036] More specifically, the top rod 37 is fixedly connected to the piston rod 36 and can slide synchronously with the piston rod 36 inside the horizontal tube 7. The third spring 38 is sleeved on the surface of the top rod 37, with its two ends connected to the inner wall of the horizontal tube 7 and the top rod 37, respectively. Under normal conditions, it can provide stable pre-tightening support for the top rod 37 and the piston rod 36, ensuring the reliability of the piston rod 36 in sealing the nozzle 6. At the same time, after the fire extinguishing action is completed and the pressure inside the tube decreases, it can drive the piston rod 36 and the top rod 37 to automatically reset and re-seal the nozzle 6. The fixing plate 27 is fixed to the inner wall of the box door 2, providing stable installation support for the button 23 and ensuring that the button 23 and the top rod 37 are accurately aligned. The button 23 is electrically connected to the alarm 25 and can be pressed and triggered when the top rod 37 slides to the corresponding position with the piston rod 36, thereby synchronously activating the alarm 25 and the transmitter 26 to complete the alarm action, realizing the synchronous triggering of the fire extinguishing action and the alarm action, and improving the timeliness of the device's response.

[0037] The working principle of this invention is as follows: When the distribution box is running normally, the electrical components inside the box 1 are electrically connected through the wiring terminal 14. At this time, the conductive block 16 is aligned with the round hole on the wiring terminal 14, so that the two wires inserted into the round hole can be connected through the conductive block 16. At the same time, the solid part of the piston rod 36 is tightly sealed in the internal channel of the nozzle 6, while the baffle 32 is tightly abutted against the bottom end of the storage tube 33, separating the sodium bicarbonate solution and the aluminum sulfate solution into two cavities separated by the partition 35. When the electrical components in a certain area of ​​the housing 1 start to rise in temperature due to overload or poor contact, this heat will naturally be conducted to the nearest hydraulic pipe 9. Since the inner cavity of the hydraulic pipe 9 is pre-filled with silicone oil, and the silicone oil will expand significantly when heated, the expanded silicone oil will start to push the movable plug 10 to slide backward along the inner cavity of the hydraulic pipe 9. At this time, the movable plug 10 will drive the push rod 11 to move backward together through the first spring 12 and the circular plate 13. As the temperature in the area continues to rise, the expansion of the silicone oil intensifies, causing the rear end of the push rod 11 to extend further until it touches the lower end of the corresponding moving rod 29. The push rod 11 then applies a backward thrust to the lower end of the moving rod 29, causing it to rotate around the fixed shaft 30. At this point, the elongated hole on the upper part of the moving rod 29 exerts a pulling force on the pressing shaft 28, which in turn drives the insulating rod 15 to slide forward along the square hole on the terminal 14. The conductive block 16, originally aligned with the round hole, then slides forward along with the insulating rod 15. As the circular plate 13 moves forward and gradually disengages from its alignment with the circular hole, when the circular plate 13 moves backward with the push rod 11 to abut against the inner wall of the hydraulic pipe 9, the conductive block 16 is completely released from its alignment with the circular hole. The conduction between the two wires is completely blocked by the insulating material of the insulating rod 15, thereby achieving precise power-off operation of the electrical components in the local fault area. During this process, the second spring 17 is also compressed and stored energy. At the same time, the pull rod 31 moves backward synchronously with the overall backward movement of the movable plug 10 and the push rod 11. When the circular plate 13 abuts against the inner wall of the hydraulic pipe 9, the front end of the pull rod 31 also contacts the stop block 32 during the backward movement. As push rod 11 moves moving rod 29, pull rod 31 also moves backward along with movable plug 10. If the temperature in this area is not contained after power is cut off and instead continues to rise sharply, it indicates that a fire has occurred inside housing 1. In this case, the expansion pressure of silicone oil in hydraulic pipe 9 will further increase. At this time, since circular plate 13 is already against the inner wall of hydraulic pipe 9, push rod 11 cannot move backward. Therefore, the continuously increasing expansion pressure of silicone oil will all act on movable plug 10. At the same time, since vent holes are provided on circular plate 13, the air between movable plug 10 and circular plate 13 can be discharged smoothly without forming a closed air cavity that hinders the movement of movable plug 10. Therefore, when the expansion pressure of the silicone oil exceeds the elastic force of the first spring 12 and the elastic force of the fourth spring 39 at the same time, the movable plug 10 will overcome the resistance of the first spring 12 and continue to slide backward along the outer surface of the push rod 11. Then, the pull rod 31 will apply a pulling force to the stop block 32, causing the stop block 32 to overcome the elastic force of the fourth spring 39 and move backward. Thus, the stop block 32 will move away from the bottom end of the storage tube 33, removing the obstruction to the bottom opening of the storage tube 33. At this time, the two cavities inside the storage tube 33 separated by the partition 35 will be connected to the connecting tube 8 below at the same time. Sodium bicarbonate and aluminum sulfate solution will then fall into the connecting tube 8 together and quickly undergo a chemical reaction to generate a large amount of carbon dioxide gas. As gas is continuously generated, the gas pressure inside the connecting pipe 8 and the horizontal pipe 7 connected to it begins to rise sharply. When the gas pressure reaches a certain level, this gas pressure will push the piston rod 36 to overcome the elastic force of the third spring 38 and slide to the right along the horizontal pipe 7. Once the through hole on the piston rod 36 moves to the inside position of the nozzle 6, the channel that was originally blocked in the nozzle 6 is completely opened. At this time, the extinguishing agent stored inside the extinguishing agent bottle 20 will be driven by its own internal pressure and flow rapidly through the delivery pipe 5 to the nozzle 6 that has just been opened. The nozzle 6 will then accurately spray the agent onto the corresponding high-temperature fire area, thereby achieving targeted fire extinguishing of the ignition point. As the piston rod 36 moves to the right, the push rod 37 is also driven to move to the right along with the piston rod 36. The outer end of the push rod 37 then touches the corresponding button 23 on the fixed plate 27. After the button 23 is triggered, the circuit is connected, and the battery 4 starts to supply power to the alarm 25 and the transmitter 26. The alarm 25 immediately emits an audible and visual alarm to remind the personnel on site, and the transmitter 26 simultaneously sends alarm information to the remote personnel terminal. Once the fire is completely extinguished and the temperature inside the housing 1 gradually returns to normal, the volume of silicone oil in the hydraulic pipe 9 will shrink and recover. At this time, the elastic force of the first spring 12 will push the movable plug 10 and the push rod 11 back to their initial positions. The elastic force of the second spring 17 will push the insulating rod 15 to reset and the conductive block 16 to realign with the round hole. The fourth spring 39 will also push the stop block 32 to reset and re-seal the bottom opening of the storage pipe 33. The third spring 38 will also push the piston rod 36 and the push rod 37 to reset, so that the solid part of the piston rod 36 will re-seal the nozzle 6 and release the push rod 37 from pressing the button 23. At this point, the entire device will return to its initial monitoring and standby state.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A distribution box with fire extinguishing function, comprising a box body (1), characterized in that: Electrical components are installed inside the box (1). Two sets of terminals (14) are fixedly installed on the inner wall of the box (1) and arranged symmetrically on the left and right. Several equally spaced round holes are opened on the terminals (14). A power-off mechanism is provided on the terminals (14). A door (2) is hinged to the front of the box (1). Several nozzles (6) are fixedly installed on the door (2). The nozzles (6) penetrate the inner wall of the door (2) and extend into the interior of the box body (1). A horizontal tube (7) is fixedly sleeved on the surface of the nozzle (6) inside the door (2). The interior of the horizontal tube (7) is connected to the interior of the nozzle (6). A piston rod (36) is slidably connected inside the horizontal tube (7). A through hole is opened on the piston rod (36). The piston rod (36) passes through the interior of the nozzle (6) and provides contact with the interior of the nozzle (6). To seal, a connecting pipe (8) is fixedly installed at the left end of the horizontal pipe (7). The end of the connecting pipe (8) away from the horizontal pipe (7) passes through the inner wall of the door (2) and extends into the interior of the box body (1). A sealing mechanism is provided inside the connecting pipe (8). A hydraulic pipe (9) is fixedly installed at the end of the connecting pipe (8) away from the horizontal pipe (7). An inner cavity is opened inside the hydraulic pipe (9). The inner cavity of the hydraulic pipe (9) is filled with silicone oil, and a driving mechanism is slidably connected in the inner cavity of the hydraulic pipe (9).

2. A distribution box with fire extinguishing function according to claim 1, characterized in that: The driving mechanism includes a movable plug (10), which is slidably connected to the inner cavity of the hydraulic pipe (9). A push rod (11) is movably sleeved inside the movable plug (10). One end of the push rod (11) away from the movable plug (10) extends through the inner cavity of the hydraulic pipe (9) to the inside of the housing (1). A circular plate (13) is fixedly installed on the surface of the push rod (11) located in the inner cavity of the hydraulic pipe (9). A vent hole is provided on the circular plate (13). A first spring (12) is fixedly installed on one end of the circular plate (13) near the movable plug (10). The end of the first spring (12) away from the circular plate (13) is fixedly connected to the movable plug (10).

3. A distribution box with fire extinguishing function according to claim 2, characterized in that: The power-off mechanism includes an insulating rod (15), which is slidably connected to the inside of a terminal block (14). A conductive block (16) is fixedly installed inside the insulating rod (15). The conductive block (16) is aligned with the circular hole on the terminal block (14). A second spring (17) is fixedly installed on the surface of the rear end of the insulating rod (15). The front end of the second spring (17) is fixedly installed on the surface of the terminal block (14). A moving rod (29) is rotatably connected to the outer surface of the terminal block (14). A push rod (11) is located directly in front of the lower end of the moving rod (29). An elongated hole is opened on the moving rod (29). A pressing shaft (28) is slidably connected inside the elongated hole. The end of the pressing shaft (28) away from the moving rod (29) is fixedly installed at the front end of the insulating rod (15).

4. A distribution box with fire extinguishing function according to claim 1, characterized in that: The blocking mechanism includes: A pull rod (31) has its rear end passing through the hydraulic pipe (9) and extending into the interior of the hydraulic pipe (9). The rear end of the pull rod (31) is fixedly connected to the movable plug (10). A stop block (32) is slidably connected to the outer surface of the pull rod (31). The stop block (32) is slidably connected to the interior of the connecting pipe (8). A fourth spring (39) is fixedly installed on the side of the stop block (32) near the movable plug (10). The end of the fourth spring (39) away from the stop block (32) is fixedly installed on the surface of the hydraulic pipe (9). Storage tube (33) is fixedly installed on connecting tube (8). The interior of storage tube (33) is connected to the interior of connecting tube (8). The surface of the baffle (32) abuts against the bottom end of storage tube (33). A partition (35) is fixedly installed inside storage tube (33). The partition (35) divides the interior of storage tube (33) into two cavities. One cavity is filled with sodium bicarbonate, and the other cavity is filled with aluminum sulfate solution.

5. A distribution box with fire extinguishing function according to claim 1, characterized in that: A support (19) is fixedly installed on the surface of the box door (2). A fire extinguishing agent bottle (20) is placed on the support (19). The outlet of the fire extinguishing agent bottle (20) is sealed and connected to a delivery pipe (5). The delivery pipe (5) passes through the surface of the box door (2) and extends into the inside of the box door (2). Several nozzles (6) are equidistantly installed on the delivery pipe (5). The inside of the nozzles (6) is connected to the inside of the delivery pipe (5).

6. A distribution box with fire extinguishing function according to claim 5, characterized in that: Several pipe clamps (18) are fixedly installed on the inner wall of the box door (2). The pipe clamps (18) are elastic clamps and are elastically clamped to the outer wall of the conveying pipe (5).

7. A distribution box with fire extinguishing function according to claim 5, characterized in that: The support (19) is hinged with a clamp (21) that is adapted to the shape of the fire extinguishing agent bottle (20). The free end of the clamp (21) is fixedly connected to the support (19). The clamp (21) and the support (19) together form a clamping cavity, and the fire extinguishing agent bottle (20) is fixed in the clamping cavity.

8. A distribution box with fire extinguishing function according to claim 1, characterized in that: A battery (4) and an alarm (25) are fixedly installed on the surface of the door (2), and a transmitter (26) is fixedly installed on the top of the door (2). Both the alarm (25) and the transmitter (26) are electrically connected to the battery (4).

9. A distribution box with fire extinguishing function according to claim 1, characterized in that: A top rod (37) is fixedly installed at the right end of the piston rod (36). The top rod (37) is slidably connected to the inside of the horizontal tube (7). The end of the top rod (37) away from the piston rod (36) passes through the inner wall of the horizontal tube (7) and extends to the outside of the horizontal tube (7). Two fixed plates (27) are fixedly installed on the inner wall of the box door (2) in a symmetrical arrangement. Buttons (23) corresponding to the top rods (37) are fixedly installed on the surface of the fixed plates (27). The buttons (23) are electrically connected to the alarm (25).

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