Power distribution control cabinet with warning mechanism

Abstract

The invention relates to the technical field of power distribution cabinets, and discloses a power distribution control cabinet with a warning mechanism, which comprises a power distribution cabinet, a spraying unit, a pumping unit, a driving unit and a releasing unit, wherein the power distribution cabinet comprises a cabinet body, a cabinet door and a top cover, the cabinet door is rotatably assembled on the cabinet body, a smoke sensor is installed on the cabinet door, the top cover is fixed at the top end of the cabinet body, and an acousto-optic warning indicator is installed on the top surface of the top cover. Through the synergistic effect of the smoke sensor, the linear driver, the rack, the driving gear and other components, a fire extinguishing mechanism can be automatically started when a fire occurs in the power distribution cabinet, the dry powder extinguishing agent uniformly and comprehensively covers electronic devices in the cabinet body through the fan-shaped spray head, a fire source is effectively extinguished, fire diffusion is prevented, and the safety of the power distribution cabinet is improved. And the safety and the reliability of the power distribution cabinet are obviously improved.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution cabinets, and in particular to a power distribution control cabinet with a warning mechanism. Background Art

[0002] The power distribution control cabinet is an electrical device that integrates power distribution, control and protection functions. It is mainly used in power systems in industrial, commercial and construction fields. It can not only distribute electrical energy, but also monitor, control and protect electrical equipment to ensure the safe, stable and efficient operation of the power system.

[0003] After searching, the Chinese patent with the announcement number CN111211497B discloses a power distribution cabinet, including a power distribution cabinet body; a power distribution cabinet shell, the power distribution cabinet shell is used to place the power distribution cabinet body, the power distribution cabinet body is slidably connected to the power distribution cabinet shell; the top cover is an arc-shaped top cover as a whole, and the top cover is rotatably connected to the power distribution cabinet body through a fan-shaped plate, and the fan-shaped plate is cooperatively connected to the power distribution cabinet shell. The above solution solves the problem that when the power distribution cabinet is installed outdoors, it is usually directly exposed to the air. In rainy and snowy weather, there is water on the surface of the power distribution cabinet, which is prone to short circuit and electric shock; in windy weather, the outdoor power distribution cabinet is more likely to be covered with dust. However, the above solution still has the following shortcomings when it is actually used:

[0004] The distribution cabinets in the prior art do not have the function of automatic fire extinguishing, which will cause a series of disadvantages. First, when a fire occurs inside the distribution cabinet due to electrical failure, short circuit or overload, the fire cannot be effectively controlled in the early stage due to the lack of automatic fire extinguishing devices, which may cause the fire to spread rapidly, causing greater equipment damage and property loss. Secondly, the distribution cabinets are usually installed at key nodes of the power system. Once a fire occurs, it will not only affect the local power supply, but may also cause the paralysis of the entire power system, resulting in production interruption or life power interruption, bringing serious economic and social impacts. In addition, manual fire extinguishing often has the problem of delayed response time, especially when there is no one on duty or the fire is not discovered in time at the early stage, the fire may have developed to a level that is difficult to control, increasing the difficulty and risk of fire extinguishing. Finally, the distribution cabinets that lack automatic fire extinguishing functions may also pose a threat to personnel safety when a fire occurs, especially when the fire is accompanied by toxic smoke or explosion, which may endanger the life safety of on-site operators.

[0005] Therefore, it is necessary to design a power distribution control cabinet with a warning mechanism to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a power distribution control cabinet with a warning mechanism.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A power distribution control cabinet with a warning mechanism, comprising a power distribution cabinet, a spray unit, a pumping unit, a driving unit and a release unit;

[0009] The power distribution cabinet comprises a cabinet body, a cabinet door and a top cover, wherein the cabinet door is rotatably mounted on the cabinet body, a smoke sensor is installed on the cabinet door, the top cover is fixed to the top of the cabinet body, and an audible and visual alarm is installed on the top surface of the top cover;

[0010] The spray unit is composed of a lifting tube, a plurality of nozzle structures and a swinging structure. Guide blocks are fixed at both ends of the lifting tube. Two guide rods are fixed inside the cabinet. The two guide blocks are slidably sleeved on the two guide rods respectively. The plurality of nozzle structures are arranged on the lifting tube. Two adjacent nozzle structures are connected by a connecting plate. The swinging structure is arranged inside the cabinet to drive the plurality of nozzle structures to swing.

[0011] Wherein, the pumping unit is arranged on the top surface of the cabinet, and is used to pump dry powder fire extinguishing agent into the lifting pipe;

[0012] The driving unit is composed of a linear driver, a linear slide, a driving structure and a control structure. The linear driver is installed on the top surface of the cabinet, the linear slide is assembled on the linear driver, and the driving structure and the control structure are both arranged on the top surface of the cabinet.

[0013] The release unit is arranged on the top surface of the cabinet and is used to control the descent of the lifting tube.

[0014] As a preferred technical solution of the present invention, the nozzle structure includes two fixed plates, a swing tube, a torsion spring, a connecting hose and a fan-shaped nozzle. The two fixed plates are fixed on the lifting tube, and the two fixed plates are arranged opposite to each other. The swing tube is rotatably assembled between the two fixed plates. One end of the torsion spring is connected to one of the fixed plates, and the other end is connected to the swing tube. One end of the connecting hose is connected to the lifting tube, and the other end is connected to the swing tube. The fan-shaped nozzle is fixed at one end of the swing tube away from the lifting tube, and the fan-shaped nozzle is rotatably connected to the end of the connecting plate.

[0015] As a preferred technical solution of the present invention, the swing structure includes a mounting plate, a guide sleeve, a movable rod, a vertical plate and a plurality of protrusions. The mounting plate is fixed to the side of one of the guide blocks, the guide sleeve is fixed to the end of the mounting plate away from the guide block, the movable rod is slidably arranged in the guide sleeve, a first set of plates is fixedly sleeved on the movable rod, the first set of plates and the guide sleeve are connected by a first spring, the vertical plate is fixed to the inner surface of the cabinet, a plurality of protrusions are fixed to the side of the vertical plate, a plurality of protrusions are distributed in a linear array along the length direction of the vertical plate, each of the protrusions is provided with an arc surface, there is a gap between two adjacent protrusions, and the movable rod is arranged opposite to the vertical plate.

[0016] As a preferred technical solution of the present invention, the pumping unit includes a gas tank, an air duct, a storage tank and a connecting pipe. The gas tank and the storage tank are both fixed on the top surface of the cabinet. Dry powder fire extinguishing agent is stored in the storage tank. One end of the air duct is connected to the gas tank, and the other end is connected to the storage tank. A solenoid valve is installed on the air duct. One end of the connecting pipe is connected to the storage tank, and the other end is connected to the lifting pipe. The connecting pipe is a retractable hose.

[0017] As a preferred technical solution of the present invention, the driving structure includes a rack, a fixed block, a mounting port and a push block. The rack is assembled on the top surface of the cabinet through a sliding structure, the fixed block is fixed to the side of the rack, the mounting port is opened on the linear slide, the push block is slidably arranged in the mounting port, the push block is arranged opposite to the fixed block, and an inclined surface is arranged on the push block. A connecting rod made of magnetic material is fixed to the end of the push block away from the rack, a second set of plates is fixedly sleeved on the connecting rod, and the second set of plates is connected to the linear slide by a third spring.

[0018] As a preferred technical solution of the present invention, the sliding structure includes a slide rail, a slider, a pull rope and a counterweight. The slide rail is fixed to the top surface of the cabinet, the slider is slidably assembled on the slide rail, and the slider is fixedly connected to the rack. One end of the pull rope is connected to the slider, and the other end is connected to the counterweight.

[0019] As a preferred technical solution of the present invention, the control structure includes a bracket, a magnetic block and a push-type switch, the bracket is fixed on the top surface of the cabinet, the magnetic block is fixed on the side of the bracket, the push-type switch is installed at the end position of the linear drive, the push-type switch is arranged opposite to the linear slide, and the push-type switch controls the on and off of the solenoid valve.

[0020] As a preferred technical solution of the present invention, the release unit includes a first bearing seat, a first rotating rod, a first driving gear, a winding wheel and a pull rope. The first bearing seat is installed on the top surface of the cabinet, the first rotating rod is rotatably installed on the first bearing seat, the first driving gear is rotatably assembled on the first rotating rod through a first one-way bearing, and the first driving gear is arranged opposite to the rack, the winding wheel is fixedly sleeved on the first rotating rod, one end of the pull rope is fixed on the winding wheel, and the other end of the pull rope extends to the interior of the cabinet and is connected to the lifting tube, and a damping wheel is fixedly sleeved on one end of the first rotating rod away from the first driving gear, a damping plate is arranged below the damping wheel, and the damping plate is fixed to the top surface of the cabinet, the damping wheel and the damping plate are both made of rubber material, and the damping plate is provided with an arc surface matching the damping wheel.

[0021] As a preferred technical solution of the present invention, the storage tank is provided with a dispersing structure and a pressing structure, and the top surface of the cabinet is provided with a transmission structure for driving the dispersing structure to operate;

[0022] The dispersing structure includes a rotating shaft and two stirring frames. The rotating shaft is rotatably mounted inside the storage tank. Both ends of the rotating shaft extend to the outside of the storage tank. The two stirring frames are fixed on the rotating shaft. Each stirring frame is fixed with a plurality of stirring plates.

[0023] The clamping structure includes a side plate, a pressure rod and a pressure block. The side plate is fixed to the side of the storage tank. The pressure rod passes through the side plate and is slidably connected to the side plate. The pressure block is fixed to the bottom end of the pressure rod and presses one end of the rotating shaft. The pressure block and the side plate are connected by a second spring.

[0024] As a preferred technical solution of the present invention, the transmission structure includes a second bearing seat, a second rotating rod, a second driving gear, a first bevel gear and a second bevel gear. The second bearing seat is installed on the top surface of the cabinet, the second rotating rod is rotatably assembled on the second bearing seat, the second driving gear is rotatably assembled on the second rotating rod through a second one-way bearing, the second driving gear is arranged opposite to the rack, the first bevel gear is fixedly sleeved on the second rotating rod, the second bevel gear is fixedly sleeved on the rotating shaft, and the first bevel gear and the second bevel gear are meshed with each other.

[0025] The present invention has the following beneficial effects:

[0026] 1. Through the synergistic effect of smoke sensors, linear actuators, racks, drive gears and other components, this solution can automatically start the fire extinguishing mechanism when a fire occurs inside the distribution cabinet. The dry powder fire extinguishing agent evenly and comprehensively covers the electronic devices inside the cabinet through the fan-shaped nozzles, effectively extinguishing the fire source and preventing the fire from spreading, which significantly improves the safety and reliability of the distribution cabinet;

[0027] 2. The second driving gear drives the rotating shaft and the stirring frame to rotate, and the solution realizes the stirring function of the dry powder fire extinguishing agent in the storage tank, which can effectively break up the agglomerated dry powder fire extinguishing agent to avoid clogging the pipeline, ensure the smooth spraying of the dry powder fire extinguishing agent, and improve the fire extinguishing efficiency;

[0028] 3. During the descent of the lifting tube, the cooperation between the movable rod and the convex block causes the fan-shaped nozzle to swing, further expanding the spray range of the dry powder fire extinguishing agent. This design enables the fire extinguishing agent to cover the interior of the cabinet more evenly and comprehensively, thus enhancing the fire extinguishing effect;

[0029] 4. Through the friction design of the damping plate and the damping wheel, the lifting tube can descend slowly and evenly, ensuring that the spraying of the dry powder fire extinguishing agent and the descent of the lifting tube are carried out synchronously. This design avoids the problem of uneven coverage of the fire extinguishing agent caused by the lifting tube descending too quickly, and further improves the fire extinguishing effect and the stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural schematic diagram of a power distribution control cabinet with a warning mechanism proposed by the present invention;

[0031] Figure 2 It is a structural diagram of the top of the cabinet;

[0032] Figure 3 This is a structural diagram of the cabinet top from another perspective;

[0033] Figure 4 for Figure 1 A magnified view of the structure at A;

[0034] Figure 5 for Figure 2 A magnified view of the structure at B;

[0035] Figure 6 for Figure 2 A magnified view of the structure at C;

[0036] Figure 7 for Figure 3 A magnified view of the structure at D;

[0037] Figure 8 It is a structural schematic diagram of the injection unit;

[0038] Fig. 9 for Figure 8 A magnified view of the structure at E;

[0039] Fig.10 is a schematic diagram of the cross-sectional structure of the lifting tube;

[0040] Fig.11 for Fig.10 A magnified view of the structure at F;

[0041] Fig.12 It is a schematic diagram of the structure of the driving structure;

[0042] Fig.13 It is a schematic diagram of the cross-sectional structure of the storage tank;

[0043] Fig.14 Schematic diagram of the structure of the release unit.

[0044] In the figure: 11, cabinet; 12, cabinet door; 13, smoke sensor; 14, top cover; 15, sound and light warning device; 21, lifting tube; 22, guide block; 23, guide rod; 24, fixed plate; 25, swing tube; 26, torsion spring; 27, connecting hose; 28, fan-shaped nozzle; 29, connecting plate; 31, mounting plate; 32, guide sleeve; 33, movable rod; 34, first set of plates; 35, first spring; 36, vertical plate; 37, convex block; 41, gas tank; 42, air guide pipe; 43, solenoid valve; 44, storage tank; 45, connecting pipe; 46, rotating shaft; 47, stirring frame; 48, stirring plate; 49, side plate; 410, pressure rod; 41 1. second spring; 412. pressure block; 51. linear drive; 52. linear slide; 53. rack; 54. fixing block; 55. mounting port; 56. push block; 57. connecting rod; 58. second set of plates; 59. third spring; 510. bracket; 511. magnetic block; 512. push switch; 61. first bearing seat; 62. first rotating rod; 63. first driving gear; 64. first one-way bearing; 65. winding wheel; 66. pulling wire; 67. damping plate; 68. damping wheel; 71. second bearing seat; 72. second rotating rod; 73. second driving gear; 74. second one-way bearing; 75. first bevel gear; 76. second bevel gear. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] Reference Figure 1-14 A power distribution control cabinet with a warning mechanism includes a power distribution cabinet, a spray unit, a pumping unit, a driving unit and a release unit. The power distribution cabinet includes a cabinet body 11, a cabinet door 12 and a top cover 14. The cabinet door 12 is rotatably assembled on the cabinet body 11. A smoke sensor 13 is installed on the cabinet door 12. The top cover 14 is fixed to the top of the cabinet body 11. An audible and visual alarm 15 is installed on the top surface of the top cover 14. When the smoke sensor 13 detects smoke inside the cabinet body 11, the smoke sensor 13 sends a control signal to the audible and visual alarm 15, so that the audible and visual alarm 15 is powered on and operates, and warns the staff by flashing and beeping.

[0047] The spray unit is composed of a lifting tube 21, a plurality of nozzle structures and a swinging structure. The lifting tube 21 is arranged inside the cabinet 11. Guide blocks 22 are fixed at both ends of the lifting tube 21. Two guide rods 23 are fixed inside the cabinet 11. The two guide blocks 22 are respectively slidably sleeved on the two guide rods 23. A plurality of nozzle structures are arranged on the lifting tube 21. Two adjacent nozzle structures are connected by a connecting plate 29. The swinging structure is arranged inside the cabinet 11 to drive the plurality of nozzle structures to swing. The nozzle structure includes two fixed plates 24, a swinging tube 25, a torsion spring 26, a connecting hose 27 and a fan-shaped nozzle 28. The two fixed plates 24 are fixed on the lifting tube 21, and the two fixed plates 24 are arranged opposite to each other. The swinging tube 25 is rotatably assembled between the two Between the fixed plates 24, one end of the torsion spring 26 is connected to one of the fixed plates 24, and the other end is connected to the swing tube 25. One end of the connecting hose 27 is connected to the lifting tube 21, and the other end is connected to the swing tube 25. The setting of the connecting hose 27 enables the swing tube 25 and the fan-shaped nozzle 28 to swing. The fan-shaped nozzle 28 is fixed to the end of the swing tube 25 away from the lifting tube 21. The fan-shaped nozzle 28 is rotatably connected to the end of the connecting plate 29. The descending action of the lifting tube 21 and the spraying action of the fan-shaped nozzles 28 are synchronized, so that the dry powder fire extinguishing agent is evenly and comprehensively covered on the electronic devices inside the cabinet 11. This design can play a fire extinguishing role when a fire occurs inside the cabinet 11, avoid the spread of fire, and realize automatic fire extinguishing of the distribution cabinet;

[0048] The swing structure includes a mounting plate 31, a guide sleeve 32, a movable rod 33, a vertical plate 36 and a plurality of protrusions 37. The mounting plate 31 is fixed to the side of one of the guide blocks 22. The guide sleeve 32 is fixed to the end of the mounting plate 31 away from the guide block 22. The movable rod 33 is slidably arranged in the guide sleeve 32. A first set of plates 34 is fixedly sleeved on the movable rod 33. The first set of plates 34 and the guide sleeve 32 are connected by a first spring 35. The vertical plate 36 is fixed to the inner surface of the cabinet 11. The plurality of protrusions 37 are all fixed to the side of the vertical plate 36. The plurality of protrusions 37 are arranged along the vertical plate 36. The plates 36 are arranged in a linear array in the length direction, and each protrusion 37 is provided with an arc surface, and there is a gap between two adjacent protrusions 37. The movable rod 33 is arranged opposite to the vertical plate 36. Under the cooperation of the movable rod 33 and the plurality of protrusions 37, the plurality of fan-shaped nozzles 28 swing in the process of following the descent of the lifting tube 21. When the fan-shaped nozzles 28 swing, a larger spraying range can be obtained, so that the dry powder fire extinguishing agent sprayed by the fan-shaped nozzles 28 can be sprayed more evenly and comprehensively inside the cabinet 11, thereby improving the fire suppression effect of the dry powder fire extinguishing agent on the fire.

[0049] The pumping unit is arranged on the top surface of the cabinet 11, and is used to pump the dry powder fire extinguishing agent into the lifting pipe 21. The pumping unit includes a gas tank 41, an air guide pipe 42, a storage tank 44 and a connecting pipe 45. The gas tank 41 and the storage tank 44 are fixed on the top surface of the cabinet 11. The storage tank 44 stores the dry powder fire extinguishing agent. One end of the air guide pipe 42 is connected to the gas tank 41, and the other end is connected to the storage tank 44. A solenoid valve 43 is installed on the air guide pipe 42. One end of the connecting pipe 45 is connected to the storage tank 44, and the other end is connected to the lifting pipe 21. The connecting pipe 45 is a retractable hose. When the solenoid valve 43 is turned on, the high-pressure gas inside the gas tank 41 will enter the storage tank 44 through the air guide pipe 42, and the high-pressure gas will carry the dry powder fire extinguishing agent from the connecting pipe 45 into the lifting pipe 21, and finally be sprayed out through a plurality of fan-shaped nozzles 28;

[0050] The driving unit is composed of a linear driver 51, a linear slide 52, a driving structure and a control structure. The linear driver 51 is installed on the top surface of the cabinet 11, and the linear slide 52 is assembled on the linear driver 51. The driving structure and the control structure are both arranged on the top surface of the cabinet 11. The driving structure includes a rack 53, a fixed block 54, a mounting port 55 and a push block 56. The rack 53 is assembled on the top surface of the cabinet 11 through a sliding structure. The sliding structure includes a slide rail, a slider, a pull rope and a counterweight. The slide rail is fixed on the top surface of the cabinet 11, and the slider is slidably assembled on the slide rail, and the slider is fixedly connected to the rack 53. One end of the pull rope is connected to the slider, and the other end is connected to the counterweight. The fixed block 54 is fixed The push block 56 is fixed on the side of the rack 53, and the installation port 55 is opened on the linear slide 52. The push block 56 is slidably arranged in the installation port 55. The push block 56 is arranged opposite to the fixed block 54, and an inclined surface is arranged on the push block 56. During the reset process of the push block 56, the inclined surface of the push block 56 will squeeze the fixed block 54. Under the action of the inclined surface, the push block 56 will move. The design of the inclined surface can avoid the phenomenon of motion interference between the push block 56 and the fixed block 54. A connecting rod 57 made of magnetic material is fixed to the end of the push block 56 away from the rack 53. A second set of plates 58 are fixedly sleeved on the connecting rod 57. The second set of plates 58 and the linear slide 52 are connected by a third spring 59.

[0051] The control structure includes a bracket 510, a magnetic block 511 and a push switch 512. The bracket 510 is fixed on the top surface of the cabinet 11, the magnetic block 511 is fixed on the side of the bracket 510, and the push switch 512 is installed at the end of the linear driver 51. The push switch 512 is arranged opposite to the linear slide 52. The push switch 512 controls the on and off of the solenoid valve 43. When the push switch 512 is pressed, the linear driver 51 stops running, and the linear slide 52 also stops moving, so that the push switch 512 is always in a state of being pressed by the linear slide 52. At the same time, the push switch 512 sends a control signal to the solenoid valve 43, so that the solenoid valve 43 is in a conducting state.

[0052] The release unit is arranged on the top surface of the cabinet 11, and is used to control the descent of the lifting tube 21. The release unit includes a first bearing seat 61, a first rotating rod 62, a first driving gear 63, a winding wheel 65 and a pull rope. The first bearing seat 61 is installed on the top surface of the cabinet 11, and the first rotating rod 62 is rotatably installed on the first bearing seat 61. The first driving gear 63 is rotatably assembled on the first rotating rod 62 through a first one-way bearing 64, and the first driving gear 63 is arranged opposite to the rack 53. The winding wheel 65 is fixedly sleeved on the first rotating rod 62, one end of the pull rope is fixed on the winding wheel 65, and the other end of the pull rope extends to the interior of the cabinet 11 and is connected to the lifting tube 21. The first rotating rod 62 is away from the first driving gear. A damping wheel 68 is fixedly sleeved at one end of the gear 63, and a damping plate 67 is arranged below the damping wheel 68. The damping plate 67 is fixed to the top surface of the cabinet 11. The damping wheel 68 and the damping plate 67 are both made of rubber material. The damping plate 67 is provided with an arc surface adapted to the damping wheel 68. The damping wheel 68 and the damping plate 67 fit each other, which enables a large friction force to be generated between the damping wheel 68 and the damping plate 67. Under the action of the friction force, the lifting tube 21 can slowly and uniformly descend, avoiding the lifting tube 21 from descending too fast. This design can ensure that the dry powder fire extinguishing agent is evenly and comprehensively sprayed inside the cabinet 11, further ensuring the fire suppression effect of the dry powder fire extinguishing agent;

[0053] The storage tank 44 is provided with a dispersing structure and a pressing structure, and the top surface of the cabinet 11 is provided with a transmission structure for driving the dispersing structure to operate; the dispersing structure includes a rotating shaft 46 and two stirring frames 47, the rotating shaft 46 is rotatably assembled inside the storage tank 44, both ends of the rotating shaft 46 extend to the outside of the storage tank 44, the two stirring frames 47 are fixed on the rotating shaft 46, and each stirring frame 47 is fixed with a plurality of stirring plates 48; the pressing structure includes a side plate 49, a pressure rod 410 and a pressure block 412, the side plate 49 is fixed to the side of the storage tank 44, the pressure rod 410 passes through the side plate 49, and is slidably connected to the side plate 49, the pressure block 412 is fixed to the bottom end of the pressure rod 410, and presses one end of the rotating shaft 46, and the pressure block 412 and the side plate 49 are connected by a second spring 411 When the rack 53 is separated from the second driving gear 73, the two stirring frames 47 will rotate to a horizontal state. In addition, a pressing structure for pressing the rotating shaft 46 is provided on the storage tank 44. Under the elastic force of the second spring 411, the pressing block 412 is always in a state of pressing the rotating shaft 46. Under the pressing action of the pressing block 412, when the rack 53 is separated from the second driving gear 73, the rotating shaft 46 and the two stirring frames 47 will not rotate under the flow of the high-pressure airflow, thereby keeping the two stirring frames 47 always in a horizontal state. In this state, the two stirring frames 47 have the least obstruction to the high-pressure airflow, which can prevent the two stirring frames 47 from weakening the flow rate of the high-pressure airflow, and ensure that the high-pressure airflow carries the dry powder fire extinguishing agent and sprays it out smoothly.

[0054] The transmission structure includes a second bearing seat 71, a second rotating rod 72, a second driving gear 73, a first bevel gear 75 and a second bevel gear 76. The second bearing seat 71 is installed on the top surface of the cabinet 11. The second rotating rod 72 is rotatably assembled on the second bearing seat 71. The second driving gear 73 is rotatably assembled on the second rotating rod 72 through a second one-way bearing 74. The second driving gear 73 is arranged opposite to the rack 53. The first bevel gear 75 is fixedly sleeved on the second rotating rod 72. The second bevel gear 76 is fixedly sleeved on the rotating shaft 46. The first bevel gear 75 and the second bevel gear 76 are meshed with each other. When the second rotating rod 72 rotates, it can drive the rotating shaft 46 to rotate through the first bevel gear 75 and the second bevel gear 76 that mesh with each other. When the rotating shaft 46 rotates, the two stirring frames 47 thereon rotate accordingly, so that the two stirring frames 47 rotate inside the storage tank 44. In this process, the two stirring frames 47 and the plurality of stirring plates 48 can stir the dry powder fire extinguishing agent stored in the storage tank 44, thereby breaking up the agglomerated dry powder fire extinguishing agent. The stirring action can prevent the agglomerated dry powder fire extinguishing agent from clogging the pipeline, which is conducive to the smooth spraying of the dry powder fire extinguishing agent.

[0055] The specific working principle of the present invention is as follows:

[0056] When the power distribution control cabinet proposed by the present invention is in use, when a fire occurs inside the cabinet body 11, the smoke generated by the fire will trigger the smoke sensor 13, causing the smoke sensor 13 to send a control signal to the linear driver 51. When the linear driver 51 is in operation, it can drive the linear slide 52 to move, so that the linear slide 52 moves from one end of the linear driver 51 toward the other end of the linear driver 51. In this process, the push block 56 on the linear slide 52 moves accordingly. Under the elastic force of the third spring 59, the push block 56 is located at a position directly opposite to the fixed block 54. At this time, the push block 56 can push the fixed block 54 during the movement, so that the fixed block 54 drives the rack 53 to move When the rack 53 moves, it will first mesh with the first drive gear 63 and drive the first drive gear 63 to rotate forward. In this process, the rotation direction of the first drive gear 63 is opposite to the locking direction of the first one-way bearing 64. Therefore, the first drive gear 63 will not drive the first rotating rod 62 to rotate, and the winding wheel 65 will not rotate. When the rack 53 is separated from the first drive gear 63, the rack 53 will mesh with the second drive gear 73 and drive the second drive gear 73 to rotate forward. In this process, the rotation direction of the second drive gear 73 is the same as the locking direction of the second one-way bearing 74. Therefore, the second drive gear 73 can drive the second rotating rod 72 to rotate;

[0057] When the second rotating rod 72 rotates, it can drive the rotating shaft 46 to rotate through the first bevel gear 75 and the second bevel gear 76 that mesh with each other. When the rotating shaft 46 rotates, the two stirring frames 47 thereon rotate accordingly, so that the two stirring frames 47 rotate inside the storage tank 44. In this process, the two stirring frames 47 and a plurality of stirring plates 48 can stir the dry powder fire extinguishing agent stored in the storage tank 44, thereby breaking up the agglomerated dry powder fire extinguishing agent. The stirring action can prevent the agglomerated dry powder fire extinguishing agent from clogging the pipeline, which is conducive to the smooth spraying of the dry powder fire extinguishing agent. When the rack 53 is separated from the second driving gear 73, the linear slide 52 just moves to the end position of the linear driver 51. At this time, the linear slide 52 will press the push switch 512, so that the push switch 512 is pressed and triggered. When the push switch 512 is pressed, the linear driver 51 stops moving. The linear slide 52 also stops moving, so that the push switch 512 is always in a state of being pressed by the linear slide 52. At the same time, the push switch 512 sends a control signal to the solenoid valve 43, so that the solenoid valve 43 is in a conductive state. When the solenoid valve 43 is conductive, the high-pressure gas inside the gas tank 41 will enter the storage tank 44 through the gas guide pipe 42, and the high-pressure gas will carry the dry powder fire extinguishing agent from the connecting pipe 45 into the lifting pipe 21, and finally be sprayed out through a plurality of fan-shaped nozzles 28. In addition, when the linear slide 52 presses the push switch 512, the connecting rod 57 just moves to a position facing the magnetic block 511. In this case, the connecting rod 57 made of magnetic material will move under the action of the magnetic attraction of the magnetic block 511 and be adsorbed on the magnetic block 511. When the connecting rod 57 moves, it can drive the push block 56 to move, so that the push block 56 is separated from the fixed block 54.

[0058] When the rack 53 is moving, the slide rail and the slider limit the movement of the rack 53. A pull rope is connected to the slider. A counterweight is provided at the end of the pull rope away from the slider. Under the gravity of the counterweight, the slider and the rack 53 always have a tendency to reset. Therefore, when the push block 56 is separated from the fixed block 54, the rack 53 will automatically reset under the action of the pull rope and the counterweight. During the reset process, the rack 53 first meshes with the second drive gear 73 to make the second drive gear 73 rotate in the opposite direction. At this time, the rotation direction of the second drive gear 73 is opposite to the locking direction of the second one-way bearing 74. Therefore, the second drive gear 73 will not drive the second rotating rod 72 to rotate. When the rack 53 is separated from the second drive gear 73, the rack 53 will mesh with the first drive gear 63. The first drive gear 63 is meshed with each other, so that the first drive gear 63 rotates in the opposite direction. At this time, the rotation direction of the first drive gear 63 is the same as the locking direction of the first one-way bearing 64. The first drive gear 63 can drive the first rotating rod 62 to rotate through the first one-way bearing 64. When the first rotating rod 62 rotates, the winding wheel 65 thereon rotates accordingly, so that the pull wire 66 is released from the winding wheel 65. In this process, the lifting tube 21 will move downward under the action of gravity. Based on the above process, the descending action of the lifting tube 21 and the spraying action of the plurality of fan-shaped nozzles 28 are performed synchronously, so that the dry powder fire extinguishing agent is evenly and comprehensively covered on the electronic devices inside the cabinet 11. This design can play a role in extinguishing fire when a fire occurs inside the cabinet 11, prevent the fire from spreading, and realize automatic fire extinguishing of the distribution cabinet;

[0059] When the lifting tube 21 moves downward, the two guide blocks 22 and the two guide rods 23 limit and guide the movement of the lifting tube 21, thereby ensuring the stability of the lifting tube 21 during its movement. During this process, when the movable rod 33 moves to a position directly opposite to the protrusion 37, the protrusion 37 squeezes the movable rod 33, causing the movable rod 33 to move along the outer surface of the protrusion 37. When the movable rod 33 moves, it pushes the adjacent fan-shaped nozzle 28, causing the fan-shaped nozzle 28 to swing. Two adjacent fan-shaped nozzles 28 are connected by a connecting plate 29. Therefore, when one of the fan-shaped nozzles 28 swings, the remaining fan-shaped nozzles 28 can swing synchronously under the linkage action of a plurality of connecting plates 29. When it moves to the gap between two adjacent protrusions 37, the protrusion 37 no longer squeezes the movable rod 33. At this time, the movable rod 33 will be reset under the elastic force of the first spring 35, and will no longer push the adjacent fan-shaped nozzle 28. Without the pushing effect of the movable rod 33, the fan-shaped nozzles 28 will automatically reset under the elastic force of the corresponding torsion spring 26. Based on the above process, under the cooperation of the movable rod 33 and the protrusions 37, the fan-shaped nozzles 28 will swing in the process of following the descent of the lifting tube 21. When the fan-shaped nozzles 28 swing, a larger spray range can be obtained, so that the dry powder fire extinguishing agent sprayed by the fan-shaped nozzles 28 can be more evenly and comprehensively sprayed inside the cabinet 11, thereby improving the fire suppression effect of the dry powder fire extinguishing agent on the fire.

[0060] It should be noted that, in the initial state, the two stirring frames 47 are in a horizontal state. When the rack 53 drives the second driving gear 73 to rotate, the two stirring frames 47 rotate. When the rack 53 is separated from the second driving gear 73, the two stirring frames 47 will rotate to a horizontal state. In addition, a clamping structure for clamping the rotating shaft 46 is provided on the storage tank 44. Under the elastic force of the second spring 411, the pressing block 412 is always in a state of clamping the rotating shaft 46. Under the clamping action of the pressing block 412, when the rack 53 is separated from the second driving gear 73, the rotating shaft 46 and the two stirring frames 47 will not rotate under the flow of the high-pressure airflow, thereby keeping the two stirring frames 47 always in a horizontal state. In this state, the two stirring frames 47 have the least obstruction to the high-pressure airflow, which can prevent the two stirring frames 47 from weakening the flow rate of the high-pressure airflow, thereby ensuring that the high-pressure airflow carries the dry powder fire extinguishing agent and sprays it out smoothly.

[0061] In the present invention, in order to enable the lifting tube 21 to slowly and uniformly descend, a damping plate 67 is provided on the top surface of the cabinet 11, and a damping wheel 68 is provided on the first rotating rod 62. The damping wheel 68 and the damping plate 67 are in contact with each other, so that a large friction force can be generated between the damping wheel 68 and the damping plate 67. Under the action of the friction force, the lifting tube 21 can slowly and uniformly descend to avoid the lifting tube 21 descending too fast. This design can ensure that the dry powder fire extinguishing agent is evenly and comprehensively sprayed inside the cabinet 11, further ensuring the fire suppression effect of the dry powder fire extinguishing agent.

[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A power distribution control cabinet with a warning mechanism, characterized in that: It includes a power distribution cabinet, an injection unit, a pumping unit, a driving unit and a release unit; The power distribution cabinet comprises a cabinet body (11), a cabinet door (12) and a top cover (14); the cabinet door (12) is rotatably mounted on the cabinet body (11); a smoke sensor (13) is mounted on the cabinet door (12); the top cover (14) is fixed to the top of the cabinet body (11); and an audible and visual warning device (15) is mounted on the top surface of the top cover (14); The spray unit is composed of a lifting tube (21), a plurality of spray head structures and a swing structure; guide blocks (22) are fixed at both ends of the lifting tube (21); two guide rods (23) are fixed inside the cabinet (11); the two guide blocks (22) are respectively slidably sleeved on the two guide rods (23); the plurality of spray head structures are arranged on the lifting tube (21); two adjacent spray head structures are connected by a connecting plate (29); and the swing structure is arranged inside the cabinet (11) and is used to drive the plurality of spray head structures to swing; The pumping unit is arranged on the top surface of the cabinet (11) and is used to pump dry powder fire extinguishing agent into the lifting pipe (21); The drive unit is composed of a linear drive (51), a linear slide (52), a drive structure and a control structure; the linear drive (51) is installed on the top surface of the cabinet (11); the linear slide (52) is assembled on the linear drive (51); and the drive structure and the control structure are both arranged on the top surface of the cabinet (11); The release unit is arranged on the top surface of the cabinet (11) and is used to control the descent of the lifting tube (21).

2. A power distribution control cabinet with a warning mechanism according to claim 1, characterized in that: The nozzle structure comprises two fixed plates (24), a swing tube (25), a torsion spring (26), a connecting hose (27) and a fan-shaped nozzle (28). The two fixed plates (24) are fixed on the lifting tube (21), and the two fixed plates (24) are arranged opposite to each other. The swing tube (25) is rotatably assembled between the two fixed plates (24). One end of the torsion spring (26) is connected to one of the fixed plates (24), and the other end is connected to the swing tube (25). One end of the connecting hose (27) is connected to the lifting tube (21), and the other end is connected to the swing tube (25). The fan-shaped nozzle (28) is fixed to one end of the swing tube (25) away from the lifting tube (21), and the fan-shaped nozzle (28) is rotatably connected to the end of the connecting plate (29).

3. A power distribution control cabinet with a warning mechanism according to claim 2, characterized in that: The swing structure comprises a mounting plate (31), a guide sleeve (32), a movable rod (33), a vertical plate (36) and a plurality of protrusions (37); the mounting plate (31) is fixed to the side of one of the guide blocks (22); the guide sleeve (32) is fixed to an end of the mounting plate (31) away from the guide block (22); the movable rod (33) is slidably arranged in the guide sleeve (32); a first set plate (34) is fixedly sleeved on the movable rod (33); the first set plate (34) is connected to the guide sleeve (32) through a first spring (35), the vertical plate (36) is fixed on the inner surface of the cabinet (11), and the plurality of protrusions (37) are fixed on the side of the vertical plate (36). The plurality of protrusions (37) are distributed in a linear array along the length direction of the vertical plate (36), each of the protrusions (37) is provided with an arc surface, and there is a gap between two adjacent protrusions (37), and the movable rod (33) is arranged opposite to the vertical plate (36).

4. A power distribution control cabinet with a warning mechanism according to claim 1, characterized in that: The pumping unit comprises a gas tank (41), an air guide pipe (42), a storage tank (44) and a connecting pipe (45); the gas tank (41) and the storage tank (44) are both fixed on the top surface of the cabinet (11); a dry powder fire extinguishing agent is stored in the storage tank (44); one end of the gas guide pipe (42) is connected to the gas tank (41), and the other end is connected to the storage tank (44); a solenoid valve (43) is installed on the gas guide pipe (42); one end of the connecting pipe (45) is connected to the storage tank (44), and the other end is connected to the lifting pipe (21); the connecting pipe (45) is a retractable hose.

5. A power distribution control cabinet with a warning mechanism according to claim 4, characterized in that: The driving structure comprises a rack (53), a fixed block (54), a mounting opening (55) and a push block (56); the rack (53) is assembled on the top surface of the cabinet (11) through a sliding structure; the fixed block (54) is fixed on the side of the rack (53); the mounting opening (55) is opened on the linear slide (52); the push block (56) is slidably arranged in the mounting opening (55); the push block (56) is arranged opposite to the fixed block (54); and an inclined surface is arranged on the push block (56); a connecting rod (57) made of magnetic material is fixed to one end of the push block (56) away from the rack (53); a second set plate (58) is fixedly sleeved on the connecting rod (57); and the second set plate (58) and the linear slide (52) are connected via a third spring (59).

6. A power distribution control cabinet with a warning mechanism according to claim 5, characterized in that: The sliding structure comprises a slide rail, a slider, a pull rope and a counterweight, wherein the slide rail is fixed to the top surface of the cabinet (11), the slider is slidably mounted on the slide rail, and the slider is fixedly connected to the rack (53), one end of the pull rope is connected to the slider, and the other end is connected to the counterweight.

7. A power distribution control cabinet with a warning mechanism according to claim 5, characterized in that: The control structure comprises a bracket (510), a magnetic block (511) and a push-type switch (512); the bracket (510) is fixed on the top surface of the cabinet (11); the magnetic block (511) is fixed on the side of the bracket (510); the push-type switch (512) is installed at the end position of the linear driver (51); the push-type switch (512) is arranged opposite to the linear slide (52); and the push-type switch (512) controls the on and off of the solenoid valve (43).

8. A power distribution control cabinet with a warning mechanism according to claim 5, characterized in that: The release unit comprises a first bearing seat (61), a first rotating rod (62), a first driving gear (63), a winding wheel (65) and a pull rope, wherein the first bearing seat (61) is mounted on the top surface of the cabinet (11), the first rotating rod (62) is rotatably mounted on the first bearing seat (61), the first driving gear (63) is rotatably assembled on the first rotating rod (62) through a first one-way bearing (64), and the first driving gear (63) is arranged opposite to the rack (53), the winding wheel (65) is fixedly sleeved on the first rotating rod (62), and the pull rope One end of the pull rope is fixed on the winding wheel (65), the other end of the pull rope extends to the interior of the cabinet (11) and is connected to the lifting tube (21), one end of the first rotating rod (62) away from the first driving gear (63) is fixedly sleeved with a damping wheel (68), a damping plate (67) is arranged below the damping wheel (68), and the damping plate (67) is fixed on the top surface of the cabinet (11), the damping wheel (68) and the damping plate (67) are both made of rubber material, and the damping plate (67) is provided with an arc surface that matches the damping wheel (68).

9. A power distribution control cabinet with a warning mechanism according to claim 5, characterized in that: The storage tank (44) is provided with a dispersing structure and a pressing structure, and the top surface of the cabinet (11) is provided with a transmission structure for driving the dispersing structure to operate; The dispersing structure comprises a rotating shaft (46) and two stirring frames (47); the rotating shaft (46) is rotatably mounted inside the storage tank (44); both ends of the rotating shaft (46) extend to the outside of the storage tank (44); the two stirring frames (47) are fixed on the rotating shaft (46); and each stirring frame (47) is fixed with a plurality of stirring plates (48); The clamping structure includes a side plate (49), a pressure rod (410) and a pressure block (412); the side plate (49) is fixed to the side of the storage tank (44); the pressure rod (410) passes through the side plate (49) and is slidably connected to the side plate (49); the pressure block (412) is fixed to the bottom end of the pressure rod (410) and presses one end of the rotating shaft (46); the pressure block (412) and the side plate (49) are connected via a second spring (411).

10. A power distribution control cabinet with a warning mechanism according to claim 9, characterized in that: The transmission structure comprises a second bearing seat (71), a second rotating rod (72), a second driving gear (73), a first bevel gear (75) and a second bevel gear (76); the second bearing seat (71) is mounted on the top surface of the cabinet (11); the second rotating rod (72) is rotatably assembled on the second bearing seat (71); the second driving gear (73) is rotatably assembled on the second rotating rod (72) via a second one-way bearing (74); the second driving gear (73) is arranged opposite to the rack (53); the first bevel gear (75) is fixedly sleeved on the second rotating rod (72); the second bevel gear (76) is fixedly sleeved on the rotating shaft (46); and the first bevel gear (75) and the second bevel gear (76) are meshed with each other.

Images