A high-voltage distribution cabinet with buffer explosion-proof function

Abstract

The invention discloses a high-voltage power distribution cabinet with a buffering explosion-proof function, comprising an explosion-proof high-voltage power distribution cabinet, explosion-proof baffle plates that can slide toward both sides are installed on both sides of the explosion-proof high-voltage power distribution cabinet, multiple groups of roller energy absorption buffer structures are installed on the outer sides of the explosion-proof baffle plates, a power distribution cabinet base is fixedly installed under the cabinet body, and explosion relief grooves are provided at the bottom of the lower T-slots on both sides of the middle plate of the power distribution cabinet, the explosion relief grooves are connected to the base explosion relief grooves symmetrically arranged on both sides of the power distribution cabinet base, a secondary energy absorption buffer mechanism is installed in the base explosion relief grooves, multiple groups of sealing jet mechanisms that can release gas during explosion and seal during resetting and are connected to inert gas dispersion ducts are fixedly installed on the inner side of the cabinet side plate, and a linked gas fire extinguishing system is installed in the explosion-proof high-voltage power distribution cabinet, explosion-proof energy absorption and reuse are achieved through the above structure, and automatic sealing is achieved to improve the fire extinguishing efficiency of the gas fire extinguishing system, while reducing the impact of the explosion on the environment and improving the explosion-proof safety performance of the explosion-proof high-voltage power distribution cabinet.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage power distribution cabinets, and in particular to a high-voltage power distribution cabinet with a buffering explosion-proof function. Background Art

[0002] High-voltage distribution cabinet refers to an electrical product with a voltage level of 3.6kV to 550kV, which plays the role of switching, controlling or protecting in the power generation, transmission, distribution, power conversion and consumption of the power system.

[0003] The three elements of explosion refer to the three conditions that constitute an explosion: heat transfer, rapidity, and gas generation. For combustible gases, the three elements of an explosion are a certain concentration of combustible gas, a certain amount of oxygen, and a fire source with enough heat to ignite the gas.

[0004] In industrial production and special-purpose areas, high-voltage distribution cabinets are designed with explosion-proof functions. This means that when the distribution cabinet is in an environment containing dust, explosive gas or fire hazards, the exposed lines of the distribution cabinet are in an insulated and sealed state. However, it is difficult to 100% prevent the distribution cabinet from contacting with gases or dust in the environment during use. Especially in the process of ventilation and heat dissipation, various harmful factors enter the interior of the distribution cabinet. When the three elements of explosion are met, an explosion occurs, making the distribution cabinet prone to explosion during use. When the distribution cabinet really explodes, the only way to prevent the explosion from spreading to the environment and triggering a chain explosion or impacting and damaging the environment, causing casualties and property losses, is to use the shielding of the distribution cabinet shell.

[0005] However, the existing explosion-proof distribution cabinets have the following problems: 1. The distribution cabinet is equipped with an explosion-proof barrier plate, which has poor impact resistance and cannot be used multiple times. After an explosion-proof displacement, if the damage cannot be restored, it needs to be replaced, and the reuse rate is low; 2. After another explosion-proof process, the explosion-proof barrier plate in the distribution cabinet is difficult to reset and loses its sealing performance, and cannot provide an effective closed environment for subsequent fire-fighting equipment to spray inert gas for fire extinguishing; 3. The energy conversion is poor. The existing ones convert part of the impact force generated by the explosion into a driving force for the explosion-proof barrier plate, and the rest is discharged from the cabinet. The exhaust gas does not undergo energy elimination and conversion, and it is easy to impact the environment, which may cause damage to equipment in the environment or injury to personnel.

[0006] Based on the above problems, the present invention proposes a high-voltage distribution cabinet with buffering and explosion-proof functions. Summary of the invention

[0007] In view of the problems in the above technical background, the purpose of the present invention is to provide a high-voltage distribution cabinet with a buffering explosion-proof function, which solves the problems raised in the background technology that the existing explosion-proof high-voltage distribution cabinet has poor explosion-proof impact performance when an explosion occurs, the explosion-proof barrier plate cannot be automatically reset and reused multiple times, and cannot provide a closed gas extinguishing environment after the explosion. The gas energy generated by the explosion is not fully buffered and converted, causing impact on the environment.

[0008] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0009] A high-voltage power distribution cabinet with a buffering explosion-proof function comprises an explosion-proof high-voltage power distribution cabinet, wherein the power distribution cabinet top plate included in the top and middle part of the explosion-proof high-voltage power distribution cabinet and the two sides of the power distribution cabinet middle plate are symmetrically fixedly installed with power distribution cabinet side plates, the power distribution cabinet top plate and the two ends of the power distribution cabinet middle plate located on the inner side of the power distribution cabinet side plate are respectively symmetrically provided with an upper T-shaped groove opening downward and a lower T-shaped groove opening upward to install an explosion-proof baffle plate that can slide to both sides, a plurality of groups of roller energy absorption buffer structures with a reset function are evenly installed on the outer side of the explosion-proof baffle plate, and a power distribution cabinet base is fixedly installed below the power distribution cabinet middle plate and the power distribution cabinet side plates on both sides At the same time, explosion relief grooves are provided at the bottom of the lower T-slots on both sides of the middle plate of the power distribution cabinet. The explosion relief grooves are connected to the base explosion relief grooves symmetrically provided on both sides of the base of the power distribution cabinet, and a secondary energy absorption buffer mechanism is installed in the base explosion relief grooves. The base distribution cabinet base located on both sides of the explosion relief grooves is symmetrically provided with base dispersion airways, and the base dispersion airways are connected to the inert gas dispersion airways provided in the upper side panels of the power cabinet. Multiple groups of sealing jet mechanisms that are connected to the inert gas dispersion airways and have the functions of deflation during explosion and sealing during reset are fixedly installed on the inner side panels of the power cabinet, and a linked gas fire extinguishing system is installed in the explosion-proof high-voltage power distribution cabinet. The above structure realizes explosion-proof energy absorption and reuse, and realizes automatic sealing to improve the fire extinguishing efficiency of the gas fire extinguishing system, while reducing the impact of the explosion on the environment and improving the explosion-proof safety performance of the explosion-proof high-voltage power distribution cabinet.

[0010] Furthermore, the roller energy absorption and buffering structure includes fixed mounting ears that are symmetrically installed front and back, a fixed shaft, a plurality of upper buffer sliding bars, a plurality of lower buffer sliding bars and an energy absorption spring.

[0011] Furthermore, both ends of the fixed shaft are mounted on the front and rear fixed mounting ears, and the upper buffer slide bar and the lower buffer slide bar that can rotate are installed at intervals on the fixed shaft. At the same time, an upper slide bar integral connecting plate that fixes the multiple upper buffer slide bars as a whole is installed through an upper groove in the middle and lower parts of the multiple upper buffer slide bars, and at the same time, a lower slide bar integral connecting plate that fixes the multiple lower buffer slide bars as a whole is installed through a lower groove in the middle and upper parts of the multiple lower buffer slide bars, the upper slide bar integral connecting plate and the lower slide bar integral connecting plate are evenly connected by multiple groups of energy-absorbing springs with stretching function, and sliding rollers with sliding function are installed on the movable ends of the multiple upper buffer slide bars and the multiple lower buffer slide bars.

[0012] Furthermore, the multiple groups of sliding rollers provided at the movable ends of the multiple upper buffer slide bars and the multiple lower buffer slide bars are clamped in the side panel roller grooves evenly provided on the inner side of the electric cabinet side panel, and the sealing jet mechanism is installed between the upper and lower side panel roller grooves, and the sealing jet mechanism includes a semicircular gas jet tube, a sealing round head and the explosion-proof barrier plate.

[0013] Furthermore, multiple groups of the semicircular gas injection tubes are fixedly installed on the inner side of the electric cabinet side panel and connected to the inert gas dispersion airway, the inner ends of the multiple groups of the semicircular gas injection tubes are inserted into the corresponding explosion-proof barrier plate, and the sealing round heads are fixedly installed on the inner ends of the multiple groups of the semicircular gas injection tubes, and the sealing round heads are provided with semicircular air holes connected to the semicircular gas injection tubes. At the same time, the sealing round heads are inserted into the explosion-proof barrier plate, and the sealing round heads have the same diameter as the explosion-proof barrier plate.

[0014] Furthermore, the secondary energy absorption and buffering mechanism includes multiple groups of damping energy absorbing fans, and multiple groups of semicircular grooves are arranged on the upper and lower sides of one side wall of the base explosion relief groove. Damping energy absorbing fans are installed in the semicircular grooves, and the diameter of the damping energy absorbing fans is smaller than the width of the base explosion relief groove. The base of the power distribution cabinet is symmetrically provided with exhaust ports respectively connected to the base explosion relief grooves on both sides.

[0015] Furthermore, a gas cylinder room is provided on the base of the power distribution cabinet located inside the explosion relief grooves on both sides of the base, and the gas fire extinguishing system includes at least two groups of inert gas cylinders, solenoid valves, gas pipes, gas fire extinguishing controllers and pressure sensors.

[0016] Furthermore, the pressure sensor is installed in the explosion-proof high-voltage distribution cabinet, and the pressure sensor is connected to the input end of the gas fire extinguishing controller through a pressure sensor module, the gas fire extinguishing controller is installed on the outer wall of the side panel of the electric cabinet, the output end of the gas fire extinguishing controller is electrically connected to multiple groups of solenoid valves, and the multiple groups of solenoid valves are respectively installed on the outlet pipes of the inert gas cylinders. At the same time, the outlets of the inert gas cylinders are connected to the air pipes, both ends of the air pipes pass through the base explosion relief grooves and are inserted into the base dispersed air ducts, and at least two groups of inert gas cylinders are installed in the gas cylinder room, and a gas cylinder room door is installed on the gas cylinder room.

[0017] Furthermore, plug blocks are fixedly installed symmetrically on the upper and lower ends of the explosion-proof barrier plate, and the upper and lower plug blocks are respectively inserted into the upper T-slot and the lower T-slot. An equipment mounting platform is installed in the explosion-proof high-voltage distribution cabinet, and a distribution cabinet door is symmetrically installed on the front side of the equipment mounting platform.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] (1) In the present invention, an explosion-proof barrier plate is installed by symmetrically arranging an upper T-shaped groove with an opening downward and a lower T-shaped groove with an opening upward on both sides of the top plate and the middle plate of the distribution cabinet, respectively. The upper and lower ends of the explosion-proof barrier plate are provided with plug-in blocks that are clamped and slid in the upper T-shaped groove and the lower T-shaped groove. At the same time, multiple groups of roller energy absorption and buffer structures are installed on the outer sides of the explosion-proof barrier plates on both sides. The movable ends of the multiple groups of upper buffer slide bars and multiple groups of lower buffer slide bars included in the roller energy absorption and buffer structures are provided with sliding rollers, and the side plates of the cabinet are provided with side plate roller grooves. The multiple groups of upper buffer slide bars are integrally fixedly connected by the upper slide bar integral connecting plate, and the multiple groups of lower buffer slide bars are integrally fixedly connected by the lower slide bar integral connecting plate. The upper slide bar integral connecting plate and the lower slide bar integral connecting plate are fixedly connected by multiple groups of retractable energy absorption springs. When an explosion occurs in the explosion-proof high-voltage distribution cabinet, the impact force generated by the explosion pushes the explosion-proof barrier plate to move outward, and part of the impact force is converted into kinetic energy of the explosion-proof barrier plate. The explosion-proof barrier plate pushes multiple groups of roller energy absorption and buffering structures to drive multiple groups of upper buffer sliding rods to slide upward and multiple groups of lower buffer sliding rods to slide downward. In this process, the energy absorption spring is stretched, and finally the kinetic energy of the explosion-proof barrier plate is converted into elastic potential energy of the energy absorption spring, which plays a buffering and explosion-proof effect. After the explosion, the elastic potential energy of the energy absorption spring drives multiple groups of upper buffer sliding rods and multiple groups of lower buffer sliding rods to push the explosion-proof barrier plate to reset, thereby achieving the explosion-proof energy absorption buffering and automatic reset at the same time, increasing the reuse rate of the structure and saving the cost of secondary maintenance.

[0020] (2) In the present invention, a plurality of explosion-proof baffle plates are provided with a plurality of explosion-proof holes, and a plurality of semicircular gas injection pipes are fixedly installed on the inner sides of the side plates of the electric cabinets on both sides. A sealing round head is installed on the inner end of the gas injection pipe, and a semicircular air hole connected to the semicircular gas injection pipe is provided on the sealing round head. At the same time, the sealing round head is inserted into the explosion-proof hole on the explosion-proof baffle plate, and the sealing round head has the same diameter as the explosion-proof hole. The outer end of the gas injection pipe is connected to the inert gas dispersion airway inside the side plate of the electric cabinet, and the bottom of the inert gas dispersion airway is connected to the base dispersion airway provided on the base of the distribution cabinet. At the same time, the air pipes connected to the outlet ends of the plurality of inert gas cylinders included in the gas fire extinguishing system are inserted into the base dispersion airway. The gas fire extinguishing system is started by a pressure sensor installed in the explosion-proof high-voltage distribution cabinet to transmit a pressure signal to a gas fire extinguishing controller through a pressure sensor module, and the gas fire extinguishing controller sends an opening and closing signal to the solenoid valves installed at the outlet ends of the plurality of inert gas cylinders. No., and finally the supply of inert gas for fire extinguishing is realized. In summary, under non-explosion conditions, the sealing round head at the inner end of the gas injection pipe is inserted into the explosion venting hole. When an explosion occurs, the explosion-proof barrier plate moves outward, and the sealing round head passes through the explosion venting hole on the explosion-proof barrier plate. Since the gas injection pipe is semicircular, the airflow generated by the explosion is transmitted to the explosion-proof barrier plate and the side plate of the electric cabinet through the explosion venting hole. Since the explosion time is very short and it is over, after the explosion-proof barrier plate is reset, the sealing round head at the right end of the gas injection pipe plays the role of sealing the explosion-proof high-voltage distribution cabinet again. At the same time, after the gas fire extinguishing system is activated, the inert fire extinguishing gas is finally transmitted from the base dispersion air duct to the inert gas dispersion air duct, and is sprayed into the sealed explosion-proof high-voltage distribution cabinet through the gas injection pipe for fire extinguishing. The above structure can realize explosion-proof pressure relief while ensuring that the sealing effect in the sealed explosion-proof high-voltage distribution cabinet can be maintained after the gas fire extinguishing system is activated, which greatly improves the fire extinguishing efficiency of the gas fire extinguishing system and improves the safety and reliability of the system.

[0021] (3) In the present invention, through explosion-proof grooves are provided at the positions of the lower T-grooves on both sides of the bottom of the middle plate of the distribution cabinet. After the explosion-proof baffle plate moves outward, the gas leaked from the explosion-proof high-voltage distribution cabinet flows into the space between the explosion-proof baffle plate and the side plate of the distribution cabinet, and flows into the base explosion-proof groove provided on the base of the distribution cabinet through the explosion-proof groove at the bottom. The base explosion-proof groove is provided with multiple sets of secondary energy absorption buffer mechanisms. The instantaneous impact force of the airflow blows the multiple sets of damping energy absorption fans contained in the multiple sets of secondary energy absorption buffer mechanisms to rotate, thereby converting the impact force of the airflow into kinetic energy and friction heat energy of the multiple sets of damping energy absorption fans. Finally, the remaining airflow is discharged through the exhaust port at the bottom. Therefore, the structure greatly reduces the impact of the impact airflow generated by the explosion on the environment, ensures the safe operation of equipment and the safety environment of personnel in the environment, and greatly improves the explosion-proof safety performance of the explosion-proof high-voltage distribution cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A stereogram provided for an embodiment of the present invention;

[0023] Figure 2 A three-dimensional diagram of an embodiment of the present invention with a power distribution cabinet door removed;

[0024] Figure 3 A half-cut perspective view of a side panel of an electric cabinet provided in an embodiment of the present invention;

[0025] Figure 4 A three-dimensional diagram of an electric cabinet with side panels removed provided by an embodiment of the present invention;

[0026] Figure 5 A partial stereogram provided for an embodiment of the present invention;

[0027] Figure 6 A three-dimensional diagram of a roller energy absorption and buffering structure provided in an embodiment of the present invention;

[0028] Figure 7 A three-dimensional diagram of a sealing jet mechanism provided in an embodiment of the present invention;

[0029] Figure 8 A front view of the gas release process provided by an embodiment of the present invention;

[0030] Fig. 9 A partial half-section stereoscopic view of an embodiment of the present invention.

[0031] In the figure: 1. Explosion-proof high-voltage distribution cabinet; 2. Top plate of distribution cabinet; 3. Upper T-slot; 4. Explosion-proof baffle plate; 401. Insert block; 5. Explosion vent hole; 6. Middle plate of distribution cabinet; 7. Lower T-slot; 8. Explosion vent slot; 9. Fixed mounting ear; 10. Fixed shaft; 11. Upper buffer slide bar; 12. Lower buffer slide bar; 13. Upper groove; 14. Upper slide bar integral connecting plate; 15. Lower groove; 16. Lower slide bar integral connecting plate; 17. Energy absorption spring; 18. Sliding roller; 19. Side plate of cabinet; 20. Inert gas dispersion airway ; 21. Gas injection pipe; 22. Sealing round head; 23. Semicircular air hole; 24. Side panel roller groove; 25. Gas fire extinguishing controller; 26. Equipment installation platform; 27. Pressure sensor; 2701. Pressure sensor module; 28. Distribution cabinet base; 29. ​​Base dispersed air duct; 30. Gas cylinder room; 31. Inert gas cylinder; 32. Solenoid valve; 33. Air pipe; 34. Base explosion relief groove; 35. Semicircular groove; 36. Damping energy absorption fan; 37. Exhaust port; 38. Gas cylinder room door; 39. Distribution cabinet door. DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0033] like Figure 1-9As shown, a high-voltage power distribution cabinet with a buffering explosion-proof function comprises an explosion-proof high-voltage power distribution cabinet 1, and cabinet side panels 19 are symmetrically fixedly installed on both sides of the power distribution cabinet top plate 2 and the power distribution cabinet middle plate 6 included in the top and middle parts of the explosion-proof high-voltage power distribution cabinet 1, and explosion-proof baffle plates 4 that can slide to both sides are installed by symmetrically providing upper T-shaped grooves 3 with openings downward and lower T-shaped grooves 7 with openings upward on the ends of the power distribution cabinet top plate 2 and the power distribution cabinet middle plate 6 located on the inner side of the power distribution cabinet side plate 19, and multiple groups of roller energy absorption buffer structures with a reset function are evenly installed on the outer side of the explosion-proof baffle plate 4. The explosion-proof baffle plate 4 slides to both sides to convert the impact force generated by the explosion into the elastic potential energy of the energy absorption spring 17 included in the roller energy absorption buffer structure, and the middle plate 6 of the power distribution cabinet and the explosion-proof baffle plate 4 are respectively installed on the inner side of the power distribution cabinet side plate 19. A distribution cabinet base 28 is fixedly installed below the side panels 19 of the electric cabinet on both sides. At the same time, explosion-relief grooves 8 are provided at the bottom of the lower T-slots 7 on both sides of the middle plate 6 of the distribution cabinet. The explosion-relief grooves 8 are connected to the base explosion-relief grooves 34 symmetrically arranged on both sides of the distribution cabinet base 28, and a secondary energy absorption buffer mechanism is installed in the base explosion-relief grooves 34. Base dispersion air ducts 29 are symmetrically arranged on the distribution cabinet base 28 on both sides of the explosion-relief grooves 8. The base dispersion air ducts 29 are connected to the inert gas dispersion air ducts 20 arranged in the upper electric cabinet side panels 19. Multiple groups of sealed jet mechanisms connected to the inert gas dispersion air ducts 20 with the functions of venting during explosion and sealing during resetting are fixedly installed on the inner side of the electric cabinet side panels 19. At the same time, a linked gas fire extinguishing system is installed in the explosion-proof high-voltage distribution cabinet 1.

[0034] Explosion-proof energy absorption reset principle:

[0035] The explosion-proof barrier plate 4 is installed by symmetrically arranging an upper T-slot 3 with an opening downward and a lower T-slot 7 with an opening upward on both sides of the top plate 2 and the middle plate 6 of the distribution cabinet, and the upper and lower ends of the explosion-proof barrier plate 4 are provided with plug blocks 401 that are clamped in the upper T-slot 3 and the lower T-slot 7 for sliding. At the same time, multiple groups of roller energy absorption buffer structures are installed on the outer surfaces of the explosion-proof barrier plates 4 on both sides. The movable ends of the multiple groups of upper buffer slide bars 11 and the multiple groups of lower buffer slide bars 12 included in the roller energy absorption buffer structure are provided with sliding rollers 18, and the side plates 19 of the electric cabinet are provided with side plate roller grooves 24. The multiple groups of upper buffer slide bars 11 are integrally fixedly connected through the upper slide bar integral connecting plate 14, and the multiple groups of lower buffer slide bars 12 are integrally fixedly connected through the lower slide bar integral connecting plate 16. Multiple groups of retractable energy absorption springs 17 are passed between the upper slide bar integral connecting plate 14 and the lower slide bar integral connecting plate 16. Fixed connection, when an explosion occurs in the explosion-proof high-voltage distribution cabinet 1, the impact force generated by the explosion pushes the explosion-proof barrier plate 4 to move outward, and part of the impact force is converted into kinetic energy of the explosion-proof barrier plate 4, and the explosion-proof barrier plate 4 pushes multiple groups of roller energy absorption and buffering structures to drive multiple groups of upper buffer slide bars 11 and multiple groups of lower buffer slide bars 12 to slide downward. In this process, the energy absorption spring 17 is stretched, and finally the kinetic energy of the explosion-proof barrier plate 4 is converted into elastic potential energy of the energy absorption spring 17, which has the effect of buffering and explosion-proof. After the explosion, the elastic potential energy of the energy absorption spring 17 drives multiple groups of upper buffer slide bars 11 and multiple groups of lower buffer slide bars 12 to push the explosion-proof barrier plate 4 to reset, thereby achieving the goal that the explosion-proof barrier plate 4 can perform explosion-proof energy absorption buffering and can automatically reset at the same time, thereby increasing the reuse rate of the structure and saving the cost of secondary maintenance.

[0036] Explosion-proof pressure relief automatic reset sealing principle:

[0037] By providing a plurality of explosion-proof baffle plates 4 with a plurality of explosion-proof holes 5, and fixing a plurality of semicircular gas injection tubes 21 on the inner sides of the side plates 19 of the electric cabinets on both sides, the inner ends of the gas injection tubes 21 are provided with sealing round heads 22, and the sealing round heads 22 are provided with semicircular air holes 23 connected to the semicircular gas injection tubes 21, and the sealing round heads 22 are inserted into the explosion-proof holes 5 on the explosion-proof baffle plates 4, and the sealing round heads 22 have the same diameter as the explosion-proof holes 5, and the outer ends of the gas injection tubes 21 are connected to the inert gas dispersion ducts 20 inside the side plates 19 of the electric cabinets, The bottom of the inert gas dispersion channel 20 is connected to the base dispersion channel 29 provided on the base 28 of the distribution cabinet. At the same time, the gas pipe 33 connected to the outlet ends of the multiple sets of inert gas cylinders 31 included in the gas fire extinguishing system is inserted into the base dispersion channel 29. The gas fire extinguishing system is started in such a way that the pressure sensor 27 installed in the explosion-proof high-voltage distribution cabinet 1 transmits the pressure signal to the gas fire extinguishing controller 25 through the pressure sensor module 2701, and the gas fire extinguishing controller 25 sends a pressure signal to the solenoid valve 3 installed at the outlet end of the multiple sets of inert gas cylinders 31. 2 sends an opening and closing signal, and finally realizes the supply of inert gas for fire extinguishing. In summary, in the case of non-explosion, the sealing round head 22 at the inner end of the gas injection pipe 21 is inserted into the explosion venting hole 5. When an explosion occurs, the explosion-proof baffle plate 4 moves outward, and the sealing round head 22 passes through the explosion venting hole 5 on the explosion-proof baffle plate 4. Since the gas injection pipe 21 is semicircular, the airflow generated by the explosion is transmitted to the explosion venting hole 5 between the explosion-proof baffle plate 4 and the side plate 19 of the electric cabinet. Since the explosion time is very short, the right end of the gas injection pipe 21 is reset after the explosion-proof baffle plate 4 is reset. The sealing round head 22 returns to the explosion-proof hole 5 and plays the role of sealing the explosion-proof high-voltage distribution cabinet 1. At the same time, after the gas fire extinguishing system is activated, the inert fire extinguishing gas is finally transmitted from the base dispersion air duct 29 to the inert gas dispersion air duct 20, and is sprayed into the sealed explosion-proof high-voltage distribution cabinet 1 through the gas injection pipe 21 for fire extinguishing. The above structure can achieve explosion-proof pressure relief while ensuring that the sealing effect inside the sealed explosion-proof high-voltage distribution cabinet can be maintained after the gas fire extinguishing system is activated, which greatly improves the fire extinguishing efficiency of the gas fire extinguishing system and improves the safety and reliability of the system.

[0038] Principle of reducing impact on the environment:

[0039] By providing through explosion-proof grooves 8 at the positions of the lower T-grooves 7 on both sides of the bottom of the middle plate 6 of the distribution cabinet, after the explosion-proof baffle plate 4 moves outward, the gas leaked from the explosion-proof high-voltage distribution cabinet 1 flows into the space between the explosion-proof baffle plate 4 and the cabinet side plate 19, and flows into the base explosion-proof groove 34 provided on the base 28 of the distribution cabinet through the bottom explosion-proof groove 8, and the base explosion-proof groove 34 is provided with multiple sets of secondary energy absorption buffer mechanisms, and the instantaneous impact force of the airflow blows the multiple sets of damping energy absorption fans 36 contained in the multiple sets of secondary energy absorption buffer mechanisms to rotate, thereby converting the impact force of the airflow into kinetic energy and friction heat energy of the multiple sets of damping energy absorption fans 36, and finally the remaining airflow is discharged through the exhaust port 37 at the bottom. Therefore, the structure greatly reduces the impact of the impact airflow generated by the explosion on the environment, ensures the safe operation of equipment and the safe environment of personnel in the environment, and greatly improves the explosion-proof safety performance of the explosion-proof high-voltage distribution cabinet.

[0040] like Figure 6 As shown, the roller energy absorption and buffering structure includes a fixed mounting ear 9, a fixed shaft 10, a plurality of upper buffer slide bars 11, a plurality of lower buffer slide bars 12 and an energy absorption spring 17 which are symmetrically installed front and back. The fixed mounting ear 9 is fixed to the outer surface of the explosion-proof baffle plate 4 by welding, and at both ends of the fixed shaft 10 are fixedly installed on the fixed mounting ear 9 and cannot rotate.

[0041] like Figure 6 As shown, both ends of the fixed shaft 10 are installed on the front and rear fixed mounting ears 9, and at the same time, upper buffer slide bars 11 and lower buffer slide bars 12 that can rotate are installed at intervals on the fixed shaft 10. At the same time, the upper slide bar integral connecting plate 14 that fixes the multiple upper buffer slide bars 11 as a whole is installed by an upper groove 13 in the middle and lower parts of the multiple upper buffer slide bars 11, and at the same time, the lower slide bar integral connecting plate 16 that fixes the multiple lower buffer slide bars 12 as a whole is installed by a lower groove 15 in the middle and upper parts of the multiple lower buffer slide bars 12. The upper slide bar integral connecting plate 14 and the lower slide bar integral connecting plate 16 are evenly connected by multiple groups of energy absorbing springs 17 with a stretching function. At the same time, the multiple upper buffer slide bars 11 and the multiple lower buffer slide bars 12 are movable. The moving end is equipped with a sliding roller 18 with a sliding function, and the energy is converted into: the explosion-proof barrier plate 4 pushes the fixed shaft 10 to move outward by pushing the fixed mounting ear 9, and the fixed shaft 10 squeezes multiple upper buffer slide bars 11 and multiple lower buffer slide bars 12 and makes the active ends of multiple upper buffer slide bars 11 move upward along the side plate roller groove 24 and the active ends of multiple lower buffer slide bars 12 move downward along the side plate roller groove 24, thereby achieving the effect of stretching the energy-absorbing spring 17, and achieving the effect of converting energy into elastic potential energy of the energy-absorbing spring 17. At the same time, after the explosion moment ends, the energy-absorbing spring 17 pulls the multiple upper buffer slide bars 11 and the multiple lower buffer slide bars 12 to move similarly, thereby achieving the effect of finally pushing the explosion-proof barrier plate 4 to reset.

[0042] like Figure 2As shown, multiple groups of sliding rollers 18 provided at the movable ends of multiple upper buffer slide bars 11 and multiple lower buffer slide bars 12 are clamped in side panel roller grooves 24 evenly provided on the inner side of the electric cabinet side panel 19. The side panel roller grooves 24 are provided to limit the multiple groups of sliding rollers 18 during movement to prevent structural damage caused by explosion impact. A sealed jet mechanism is installed between the upper and lower side panel roller grooves 24, and the sealed jet mechanism includes a semicircular gas jet tube 21, a sealing round head 22 and an explosion-proof barrier plate 4.

[0043] like Figure 3-5 As shown in 7, multiple groups of semicircular gas injection tubes 21 are fixedly installed on the inner side of the electric cabinet side panel 19 and connected to the inert gas dispersion airway 20, the inner ends of the multiple groups of semicircular gas injection tubes 21 are inserted into the corresponding explosion-proof baffle plate 4. A sealing round head 22 is fixedly installed at the inner end of the multiple groups of semicircular gas injection tubes 21. The sealing round head 22 is provided with a semicircular air hole 23 connected to the semicircular gas injection tube 21. At the same time, the sealing round head 22 is inserted into the explosion-proof baffle plate 4. The diameter of the sealing round head 22 is the same as that of the explosion-proof hole 5. The semicircular gas injection tube 21 is provided so that the airflow in the cabinet can be depressurized and slip out through the semicircular hole formed by the explosion-proof hole 5 and the gas injection tube 21 after the explosion-proof baffle plate 4 moves outward at the moment of explosion. After the explosion-proof baffle plate 4 is reset, the sealing round head 22 also plays the effect of sealing the explosion-proof hole 5, providing a closed place for the gas fire extinguishing system to spray paint and extinguish fires, thereby improving the fire extinguishing efficiency.

[0044] like Figure 8 , 9 As shown, the secondary energy absorption and buffering mechanism includes multiple groups of damping energy absorbing fans 36, and multiple groups of semicircular grooves 35 are provided on the upper and lower sides of one side wall of the base explosion-proof groove 34. The damping energy absorbing fan 36 is installed in the semicircular groove 35, and the diameter of the damping energy absorbing fan 36 is smaller than the width of the base explosion-proof groove 34. The base 28 of the distribution cabinet is symmetrically provided with exhaust ports 37 respectively connected to the base explosion-proof grooves 34 on both sides. The damping energy absorbing fan 36 is installed by providing semicircular grooves 35 in order to make the impact airflow act vertically on one side of the damping energy absorbing fan 36, which is more helpful to convert the impact force of the airflow into the kinetic energy of the damping energy absorbing fan 36 for consumption, so as to reduce the impact on the environment.

[0045] like Figure 8 , 9 As shown, a gas cylinder room 30 is provided on the base 28 of the distribution cabinet located inside the explosion relief grooves 34 on both sides of the base. The gas fire extinguishing system includes at least two sets of inert gas cylinders 31, solenoid valves 32, gas pipes 33, gas fire extinguishing controllers 25 and pressure sensors 27. At least two sets of inert gas cylinders 31 are used for the purpose of one for use and one for backup, so as to prevent a secondary explosion from occurring in a short period of time and completely extinguish the fire.

[0046] like Figure 8 , 9As shown, the pressure sensor 27 is installed in the explosion-proof high-voltage distribution cabinet 1, and the pressure sensor 27 is connected to the input end of the gas fire extinguishing controller 25 through the pressure sensor module 2701. The gas fire extinguishing controller 25 is installed on the outer wall of the side panel 19 of the electric cabinet. The output end of the gas fire extinguishing controller 25 is electrically connected to multiple groups of solenoid valves 32, and the multiple groups of solenoid valves 32 are respectively installed on the outlet pipes of the inert gas cylinder 31. At the same time, the outlet of the inert gas cylinder 31 is connected to the air pipe 33. Both ends of the air pipe 33 pass through the base explosion relief groove 34 and are inserted into the base dispersed air duct 29. At the same time, at least two groups of inert gas cylinders 31 are installed in the gas cylinder room 30, and the gas cylinder room door 38 is installed on the gas cylinder room 30. The pressure sensor 27 can select the model of the joint measurement 2088 pressure transmitter sensor, which has the performance of high temperature resistance.

[0047] like Figure 1 , 5 As shown, the upper and lower ends of the explosion-proof barrier plate 4 are symmetrically fixed with plug blocks 401, and the upper and lower plug blocks 401 are respectively inserted into the upper T-slot 3 and the lower T-slot 7. The plug blocks 401 are provided to limit the sliding track of the explosion-proof barrier plate 4 to ensure that the explosion-proof barrier plate 4 does not damage the internal equipment of the cabinet. An equipment mounting platform 26 is installed in the explosion-proof high-voltage distribution cabinet 1, and a distribution cabinet door 39 is symmetrically installed on the front side of the equipment mounting platform 26. The equipment mounting platform 26 is used to install various power transformers and other equipment.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-voltage power distribution cabinet with a buffer explosion-proof function, comprising an explosion-proof high-voltage power distribution cabinet (1), characterized in that: The top and middle parts of the explosion-proof high-voltage distribution cabinet (1) include a distribution cabinet top plate (2) and a distribution cabinet middle plate (6) symmetrically fixedly mounted with cabinet side plates (19) on both sides. The top plate (2) and the middle plate (6) of the distribution cabinet located inside the cabinet side plates (19) are symmetrically provided with upper T-shaped grooves (3) with downward openings and lower T-shaped grooves (7) with upward openings at both ends to mount explosion-proof baffle plates (4) that can slide toward both sides. Multiple groups of roller energy absorption buffer structures with reset functions are evenly mounted on the outside of the explosion-proof baffle plates (4). The middle plate (6) and the cabinet side plates (19) on both sides are fixedly mounted with distribution cabinet bases (28). At the same time, the lower T-shaped grooves on both sides of the middle plate (6) of the distribution cabinet are fixedly mounted with distribution cabinet bases (28). (7) An explosion relief groove (8) is provided at the bottom, the explosion relief groove (8) is connected to the base explosion relief groove (34) symmetrically provided on both sides of the distribution cabinet base (28), and a secondary energy absorption buffer mechanism is installed in the base explosion relief groove (34), and base dispersion air ducts (29) are symmetrically provided on the distribution cabinet base (28) on both sides of the explosion relief groove (8), and the base dispersion air duct (29) is connected to the inert gas dispersion air duct (20) provided in the upper cabinet side plate (19), and multiple groups of sealed jet mechanisms connected to the inert gas dispersion air duct (20) with the functions of venting during explosion and sealing during resetting are fixedly installed on the inner side of the cabinet side plate (19), and at the same time, a linked gas fire extinguishing system is installed in the explosion-proof high-voltage distribution cabinet (1); The roller energy absorption and buffering structure comprises a fixed mounting ear (9) symmetrically mounted front and rear, a fixed shaft (10), a plurality of upper buffer sliding bars (11), a plurality of lower buffer sliding bars (12) and an energy absorption spring (17); The two ends of the fixed shaft (10) are mounted on the front and rear fixed mounting ears (9), and the upper buffer slide bar (11) and the lower buffer slide bar (12) are rotatably mounted on the fixed shaft (10) at intervals, and the upper and lower parts of the plurality of upper buffer slide bars (11) are provided with an upper groove (13) to mount an upper slide bar integral connecting plate (14) for fixing the plurality of upper buffer slide bars (11) as a whole, and the upper parts of the plurality of lower buffer slide bars (12) are provided with a lower groove (15) to mount a lower slide bar integral connecting plate (16) for fixing the plurality of lower buffer slide bars (12) as a whole, and the upper slide bar integral connecting plate (14) and the lower slide bar integral connecting plate (16) are evenly connected by multiple groups of energy absorbing springs (17) with a stretching function, and the movable ends of the plurality of upper buffer slide bars (11) and the plurality of lower buffer slide bars (12) are provided with sliding rollers (18) with a sliding function; The plurality of groups of sliding rollers (18) provided at the movable ends of the plurality of upper buffer slide bars (11) and the plurality of lower buffer slide bars (12) are clamped in the side plate roller grooves (24) uniformly provided on the inner side of the electric cabinet side plate (19), and the sealing jet mechanism is installed between the upper and lower side plate roller grooves (24), and the sealing jet mechanism comprises a semicircular gas jet pipe (21), a sealing round head (22) and the explosion-proof baffle plate (4); A plurality of groups of the semicircular gas injection tubes (21) are fixedly mounted on the inner side of the electric cabinet side panel (19) and connected to the inert gas dispersion duct (20); the inner ends of the plurality of groups of the semicircular gas injection tubes (21) are inserted into corresponding explosion relief holes (5) provided on the explosion-proof baffle plate (4); and the sealing round heads (22) are fixedly mounted on the inner ends of the plurality of groups of the semicircular gas injection tubes (21); the sealing round heads (22) are provided with semicircular air holes (23) connected to the semicircular gas injection tubes (21); and the sealing round heads (22) are inserted into the explosion relief holes (5) on the explosion-proof baffle plate (4); and the sealing round heads (22) have the same diameter as the explosion relief holes (5); The secondary energy absorption and buffering mechanism comprises a plurality of groups of damping energy absorption fans (36), and a plurality of groups of semicircular grooves (35) are arranged on a side wall of the base explosion relief groove (34) from top to bottom. The damping energy absorption fans (36) are installed in the semicircular grooves (35), and the diameter of the damping energy absorption fans (36) is smaller than the width of the base explosion relief groove (34). The power distribution cabinet base (28) is symmetrically provided with exhaust ports (37) respectively connected to the base explosion relief grooves (34) on both sides.

2. A high-voltage power distribution cabinet with buffer explosion-proof function according to claim 1, characterized in that: A gas cylinder room (30) is provided on the power distribution cabinet base (28) located inside the base explosion relief grooves (34) on both sides. The gas fire extinguishing system comprises at least two groups of inert gas cylinders (31), a solenoid valve (32), a gas pipe (33), a gas fire extinguishing controller (25) and a pressure sensor (27).

3. A high-voltage power distribution cabinet with buffer explosion-proof function according to claim 2, characterized in that: The pressure sensor (27) is installed in the explosion-proof high-voltage power distribution cabinet (1), and the pressure sensor (27) is connected to the input end of the gas fire extinguishing controller (25) through a pressure sensor module (2701). The gas fire extinguishing controller (25) is installed on the outer wall of the side plate (19) of the power cabinet. The output end of the gas fire extinguishing controller (25) is electrically connected to a plurality of groups of solenoid valves (32). The plurality of groups of solenoid valves (32) are respectively installed on the outlet pipes of the inert gas cylinder (31). At the same time, the outlet of the inert gas cylinder (31) is connected to the gas pipe (33). Both ends of the gas pipe (33) pass through the base explosion relief groove (34) and are inserted into the base dispersed gas channel (29). At the same time, at least two groups of inert gas cylinders (31) are installed in the gas cylinder room (30). A gas cylinder room door (38) is installed on the gas cylinder room (30).

4. A high-voltage power distribution cabinet with buffer explosion-proof function according to claim 1, characterized in that: Insert blocks (401) are fixedly mounted symmetrically at the upper and lower ends of the explosion-proof baffle plate (4), and the upper and lower insert blocks (401) are respectively inserted into the upper T-shaped slot (3) and the lower T-shaped slot (7). An equipment mounting platform (26) is mounted in the explosion-proof high-voltage power distribution cabinet (1), and a power distribution cabinet door (39) is symmetrically mounted on the front side of the equipment mounting platform (26).

Images