Power distribution cabinet with fire extinguishing structure

Abstract

The invention discloses a power distribution cabinet with a fire extinguishing structure, and relates to the technical field of power distribution cabinets, and the power distribution cabinet comprises a box body, a box door, a supporting arm plate, a mounting plate, a rotating rod, a nozzle, a rotation driving assembly and an outer mounting frame. The supporting arm plate is fixed to the inner side face of the box door and provided with a sliding rail. The mounting plate is connected to the sliding rail in a sliding manner and is driven by the lifting driving assembly; the rotating rod is rotationally connected to the mounting plate, and a spray head is mounted on the rotating rod; the rotation driving assembly is used for driving the rotating rod to rotate and adjusting the spraying angle of the nozzle. The outer mounting frame is fixed to the outer side wall of the box body and used for clamping the fire extinguishing storage tank, and the fire extinguishing storage tank is connected with the sprayer through a pipeline. By arranging the supporting arm plate, the sliding rail, the mounting plate, the rotating rod, the spray head and other structures, multi-angle and large-range covering fire extinguishing of the spray head is achieved, the problems that an existing power distribution cabinet fire extinguishing device is uneven in spraying and poor in fire extinguishing effect are effectively solved, and the fire extinguishing efficiency and reliability are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of power distribution cabinet technology, and more specifically to a power distribution cabinet with a fire extinguishing structure. Background Technology

[0002] With modern society's heavy reliance on electricity, distribution cabinets, as key equipment in power systems, are widely used in numerous fields such as industrial and agricultural production, commercial establishments, and residential buildings. However, distribution cabinets may cause fires due to various factors during operation, resulting in serious casualties and property damage. Statistics show that electrical fires have accounted for a high proportion of fire accidents in recent years, and as a centralized installation location for electrical equipment, the fire risk posed by distribution cabinets cannot be ignored.

[0003] Traditional distribution cabinets are often designed with a focus on basic electrical functions and structural stability, resulting in relatively weak fire prevention and suppression measures. While some distribution cabinets on the market are equipped with fire extinguishing devices, these devices have several shortcomings. Firstly, the installation locations of existing fire extinguishing devices are fixed and the number is limited, leading to uneven spraying of extinguishing gases and poor extinguishing effectiveness. Secondly, they cannot effectively vent smoke from inside the distribution cabinet during a fire, further compromising its fire extinguishing performance, especially in long and narrow distribution cabinets.

[0004] For example, Chinese patent CN217036375U discloses a power distribution cabinet with fire extinguishing function, including a power distribution cabinet body, a fire extinguishing component installed on the power distribution cabinet body, a horizontally arranged fire extinguishing pipe fixedly connected to one end of the fire extinguishing box, multiple nozzles installed on the fire extinguishing pipe, a first electric valve installed on the connecting pipe, the electric valve electrically connected to a controller, and the controller electrically connected to a smoke sensor. However, this patent still has the aforementioned problems of uneven spraying of fire extinguishing gas and inability to exhaust smoke in a timely manner, and cannot meet the high requirements for the fire extinguishing performance of power distribution cabinets in practical applications.

[0005] Therefore, in order to solve the problems of uneven spraying, poor fire extinguishing effect and untimely smoke exhaust of existing distribution cabinet fire extinguishing devices, there is an urgent need for a more efficient and reliable distribution cabinet with a fire extinguishing structure. Summary of the Invention

[0006] In view of this, the present invention provides a power distribution cabinet with a fire extinguishing structure, which aims to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A power distribution cabinet with a fire extinguishing structure includes a cabinet body and a door connected to the cabinet body, and further includes:

[0009] Support arm plates, the number of which is two, and they are fixed vertically and parallel to each other on both sides of the inner side of the box door, and slide rails are fixed on the support arm plates;

[0010] Mounting plates are slidably connected to the slide rails and are driven by a lifting drive assembly mounted on the support arm plate; a rotating rod is rotatably connected to one side of the two opposing mounting plates, and several nozzles are mounted on the rotating rod.

[0011] A rotation drive assembly is mounted on the mounting plate and connected to the end of the rotation rod. The rotation drive assembly is used to drive the rotation rod to rotate, thereby adjusting the spray angle of the nozzle.

[0012] An external mounting bracket is fixed to the outer side wall of the housing and is used to hold the fire extinguishing tank, which is connected to the nozzle via a pipeline.

[0013] Through the above technical solution, the present invention, by setting up a support arm plate, slide rail, mounting plate, rotating rod and nozzle, etc., realizes multi-angle and large-area fire extinguishing coverage of the nozzle, effectively solves the problems of uneven spraying and poor fire extinguishing effect of existing power distribution cabinet fire extinguishing devices, and greatly improves fire extinguishing efficiency and reliability.

[0014] Preferably, in the aforementioned distribution cabinet with a fire extinguishing structure, the mounting plate includes a lifting plate and a side plate. The lifting plate is slidably connected to the slide rail, and the side plate is fixed to the side edge of the lifting plate facing the interior of the cabinet. The rotating rod is rotatably connected to the side plate via a bearing. This allows the rotating rod to be stably rotatably connected to the side plate via the bearing, providing a solid foundation for the flexible swinging of the nozzle and enhancing the overall stability of the fire extinguishing device.

[0015] Preferably, in the aforementioned distribution cabinet with a fire extinguishing structure, the lifting drive assembly includes a first motor, a drive wheel, a driven wheel, and a belt. The first motor is fixed to the top of the support arm plate, the drive wheel is fixedly connected to the power output shaft of the first motor, the driven wheel is rotatably connected to the bottom of the support arm plate, and the belt is sleeved on the drive wheel and the driven wheel. The belt is fixedly connected to the lifting plate through a connecting plate. By utilizing the cooperation of the first motor, drive wheel, driven wheel, and belt, the lifting plate can be precisely driven to move up and down along the slide rail, thereby realizing the vertical position adjustment of the nozzle, further expanding the fire extinguishing coverage of the nozzle, and improving the fire extinguishing effect.

[0016] Preferably, in the aforementioned distribution cabinet with a fire extinguishing structure, the rotation drive assembly includes a second motor, a turntable, a clamping plate, and a connecting rod. The second motor is fixed to the side plate, the center of the turntable is fixed to the power output shaft of the second motor, the clamping plate is fixed to the end of the rotating rod, one end of the connecting rod is hinged to the edge of the turntable, and the other end is hinged to the clamping plate. Through the coordinated action of the second motor, the turntable, the clamping plate, and the connecting rod, the rotating rod can be effectively driven to rotate, thereby adjusting the spray angle of the nozzle and realizing the oscillation of the nozzle. This enhances the uniformity and comprehensiveness of the fire extinguishing medium spray, which is beneficial for rapid control and extinguishing of fires.

[0017] Preferably, in the aforementioned distribution cabinet with a fire extinguishing structure, the external mounting bracket includes a fixing frame and a hydraulic clamping mechanism. The fixing frame is fixed to the outer wall of the cabinet, and the hydraulic clamping mechanism is mounted on the fixing frame. The hydraulic clamping mechanism clamps the fire extinguishing tank by controlling the extension and retraction of a hydraulic cylinder. The fixing frame and the hydraulic clamping mechanism can securely clamp the fire extinguishing tank, ensuring that the fire extinguishing tank can stably provide fire extinguishing medium in the event of a fire. Simultaneously, it facilitates the installation and replacement of the fire extinguishing tank, improving the practicality and maintenance convenience of the device.

[0018] Preferably, in the aforementioned distribution cabinet with a fire-extinguishing structure, the top of the cabinet is equipped with an exhaust fan, and the side walls of the cabinet are equipped with automatic air intake regulators. These regulators can promptly expel smoke from the cabinet, reducing its concentration and preventing smoke accumulation that could affect fire extinguishing effectiveness and personnel safety. The automatic air intake regulators can automatically adjust the air intake according to the pressure and fire intensity within the cabinet, ensuring air circulation, helping to lower the fire temperature, providing a suitable oxygen environment for fire extinguishing, and preventing incomplete fire extinguishing or the generation of toxic gases due to insufficient oxygen.

[0019] Preferably, in the aforementioned distribution cabinet with a fire extinguishing structure, a smoke detector is installed inside the cabinet. The smoke detector inside the cabinet can sensitively detect smoke signals in the early stages of a fire, enabling early fire warning and automatic triggering of the fire extinguishing device. This buys valuable time for timely fire suppression and effectively improves the fire safety performance of the distribution cabinet.

[0020] Preferably, in the aforementioned distribution cabinet with a fire extinguishing structure, an alarm is installed on the inner wall of the cabinet. The alarm is activated based on the signal received by the smoke sensor. The alarm installed on the inner wall of the cabinet can be activated based on the signal received by the smoke sensor, emitting an audible and visual alarm signal to promptly alert on-site personnel to the fire, helping them to take rapid response measures, reduce fire losses, and enhance the safety and warning function of the device.

[0021] Preferably, in the aforementioned distribution cabinet with a fire extinguishing structure, the fire extinguishing tank stores liquid carbon dioxide, and the outlet of the fire extinguishing tank is controlled by a solenoid valve. This allows for the rapid release of liquid carbon dioxide for fire extinguishing in the event of a fire. Liquid carbon dioxide has advantages such as high fire extinguishing efficiency, non-conductivity, and no equipment contamination. It effectively reduces the temperature of the fire and isolates oxygen during the fire extinguishing process, achieving the effect of suffocation, without causing secondary damage to the electrical equipment inside the distribution cabinet, thus ensuring the safety and reliability of the equipment.

[0022] Preferably, in the aforementioned distribution cabinet with a fire extinguishing structure, the connecting pipe between the fire extinguishing tank and the nozzle passes through the side wall of the cabinet and is a fire-resistant pipe. This ensures the stability and safety of the connecting pipe in a fire environment, prevents leakage or interruption of the fire extinguishing medium due to fire damage, guarantees the smooth progress of the fire extinguishing process, and improves the reliability and safety of the fire extinguishing device.

[0023] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a power distribution cabinet with a fire extinguishing structure, which has the following beneficial effects:

[0024] 1. Highly efficient fire suppression: Through the design of multi-angle, wide-area coverage nozzles and the use of liquid carbon dioxide fire extinguishing medium, the fire extinguishing medium can be sprayed quickly and evenly, improving fire suppression efficiency and effectively extinguishing fires.

[0025] 2. Early warning and automation: The installation of smoke detectors and alarms enables early warning of fires and automatic triggering of fire extinguishing devices, promptly alerting on-site personnel and reducing fire losses.

[0026] 3. Safety and Reliability: Fireproof piping, stable clamping fire extinguishing tank, and automatic environmental control functions (exhaust fan and automatic air intake regulator) ensure the safety and reliability of the fire extinguishing process and prevent secondary disasters.

[0027] 4. Equipment protection: Liquid carbon dioxide fire extinguishing is non-conductive and does not pollute equipment, avoiding secondary damage to electrical equipment and ensuring the safety and reliability of the equipment.

[0028] 5. Ease of maintenance: The hydraulic clamping mechanism of the external mounting bracket facilitates the installation and replacement of the fire extinguishing tank, improving the ease of maintenance of the device. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 The attached figure is a front structural diagram of the power distribution cabinet with fire extinguishing structure provided by the present invention;

[0031] Figure 2 The attached figure is a schematic diagram of the rear structure of the power distribution cabinet with fire extinguishing structure provided by the present invention;

[0032] Figure 3 The attached figure is a structural schematic diagram of the external mounting bracket provided by the present invention;

[0033] Figure 4 The attached figure is a schematic diagram of the structure of the inner side of the cabinet door provided by the present invention;

[0034] Figure 5 The attached figure is provided by the present invention. Figure 4 A magnified view of part A in the middle.

[0035] in:

[0036] 1-Box;

[0037] 11-Exhaust fan; 12-Automatic air intake regulator; 13-Alarm;

[0038] 2-Box door;

[0039] 3-Support arm plate;

[0040] 31-Slide rail;

[0041] 4-Mounting plate;

[0042] 41-Lifting plate; 42-Side plate;

[0043] 5- Rotary drive assembly;

[0044] 51-Second motor; 52-Turntable; 53-Clamping plate; 54-Connecting rod;

[0045] 6-External mounting bracket;

[0046] 61 Fire extinguishing storage tank; 62 Fixing frame; 63 Hydraulic clamping mechanism;

[0047] 7- Lifting drive assembly;

[0048] 71-First motor; 72-Driving pulley; 73-Driven pulley; 74-Belt; 75-Connecting plate;

[0049] 8-Rotating rod;

[0050] 81- Nozzle; 82- Bearing. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] See appendix Figure 1 To be continued Figure 5 This invention discloses a power distribution cabinet with a fire extinguishing structure, including a cabinet 1 and a door 2 connected to the cabinet 1, and further comprising:

[0053] Support arm plate 3, there are two support arm plates 3, which are vertically and parallelly fixed on both sides of the inner side of the box door 2, and slide rail 31 is fixed on the support arm plate 3;

[0054] Mounting plate 4 is slidably connected to slide rail 31. Mounting plate 4 is driven by lifting drive assembly 7 installed on support arm plate 3. Rotating rod 8 is rotatably connected to one side of the two opposing mounting plates 4. Several nozzles 81 are installed on the rotating rod 8.

[0055] Rotary drive assembly 5 is mounted on mounting plate 4 and connected to the end of rotating rod 8. Rotary drive assembly 5 is used to drive rotating rod 8 to rotate, thereby adjusting the spray angle of nozzle 81.

[0056] An external mounting bracket 6 is fixed to the outer side wall of the housing 1 and is used to hold the fire extinguishing tank 61, which is connected to the nozzle 81 through a pipeline.

[0057] To further optimize the above technical solution, the mounting plate 4 includes a lifting plate 41 and a side plate 42. The lifting plate 41 is slidably connected to the slide rail 31, and the side plate 42 is fixed to the side edge of the lifting plate 41 facing the inside of the housing 1. The rotating rod 8 is rotatably connected to the side plate 42 through the bearing 82.

[0058] To further optimize the above technical solution, the lifting drive assembly 7 includes a first motor 71, a drive wheel 72, a driven wheel 73, and a belt 74. The first motor 71 is fixed to the top of the support arm plate 3, the drive wheel 72 is fixedly connected to the power output shaft of the first motor 71, the driven wheel 73 is rotatably connected to the bottom of the support arm plate 3, and the belt 74 is sleeved on the drive wheel 72 and the driven wheel 73. The belt 74 is fixedly connected to the lifting plate 41 through a connecting plate 75.

[0059] To further optimize the above technical solution, the rotation drive assembly 5 includes a second motor 51, a turntable 52, a clamping plate 53, and a connecting rod 54; the second motor 51 is fixed on the side plate 42, the center of the turntable 52 is fixed to the power output shaft of the second motor 51, the clamping plate 53 is fixed to the end of the rotating rod 8, one end of the connecting rod 54 is hinged to the edge of the turntable 52, and the other end is hinged to the clamping plate 53.

[0060] To further optimize the above technical solution, the external mounting frame 6 includes a fixed frame 62 and a hydraulic clamping mechanism 63. The fixed frame 62 is fixed on the outer side wall of the box 1, and the hydraulic clamping mechanism 63 is installed on the fixed frame 62. The hydraulic clamping mechanism 63 clamps the fire extinguishing tank 61 by controlling the extension and retraction of the hydraulic cylinder.

[0061] To further optimize the above technical solution, the top of the housing 1 has an exhaust fan 11, and the side wall of the housing 1 has an automatic air intake regulator 12.

[0062] To further optimize the above technical solution, a smoke detector is installed inside the housing 1.

[0063] To further optimize the above technical solution, an alarm 13 is installed on the inner wall of the enclosure 1. The alarm 13 is activated based on the signal received by the smoke sensor.

[0064] To further optimize the above technical solution, the fire extinguishing tank 61 stores liquid carbon dioxide, and the outlet of the fire extinguishing tank 61 is controlled by a solenoid valve.

[0065] To further optimize the above technical solution, the connecting pipeline between the fire extinguishing storage tank 61 and the nozzle 81 passes through the side wall of the box 1 and is a fireproof pipeline.

[0066] The working principle of this embodiment is as follows:

[0067] When a fire occurs inside the distribution cabinet, the smoke detector (not shown in the attached diagram) inside cabinet 1 first detects the smoke signal. The smoke detector transmits the detected signal to alarm 13, which immediately activates upon receiving the signal, emitting an audible and visual alarm to alert personnel on site of the fire. Simultaneously, the smoke detector also triggers the activation of the fire extinguishing system.

[0068] The liquid carbon dioxide stored in the fire extinguishing tank 61 is opened by a solenoid valve control switch, and the liquid carbon dioxide flows to the nozzle 81 through a connecting pipeline (not shown in the attached drawings, but connected between the fire extinguishing tank 61 and the nozzle 81). In this embodiment, the fire extinguishing tank 61 is fixed to the outer wall of the housing 1 by an external mounting bracket 6. The external mounting bracket 6 includes a fixing bracket 62 and a hydraulic clamping mechanism 63. The hydraulic clamping mechanism 63 clamps the fire extinguishing tank 61 by controlling the extension and retraction of a hydraulic cylinder, ensuring that the fire extinguishing tank 61 can stably provide the fire extinguishing medium in the event of a fire.

[0069] During firefighting, the first motor 71 starts, driving the drive wheel 72 to rotate. The drive wheel 72 drives the driven wheel 73 to rotate via a belt 74. The belt 74 is connected to the lifting plate 41 via a connecting plate 75, thereby driving the lifting plate 41 to move up and down along the slide rail 31. The slide rail 31 is fixed to the support arm plate 3, which is vertically and parallel to both sides of the inner side of the box door 2. The up and down movement of the lifting plate 41 drives the nozzles 81 mounted on it to move up and down as a whole, so that the nozzles 81 can cover the vertical space inside the box 1.

[0070] Simultaneously, the second motor 51 starts, driving the turntable 52 to rotate. The turntable 52 drives the clamping plate 53 to swing via the connecting rod 54. The clamping plate 53 is fixedly connected to the end of the rotating rod 8, thereby driving the rotating rod 8 to rotate around the bearing 82. Several nozzles 81 are installed on the rotating rod 8. As the rotating rod 8 rotates, the spray angle of the nozzles 81 changes. Through the coordinated action of the first motor 71 and the second motor 51, the nozzles 81 can perform a combined up-and-down and swinging motion inside the housing 1, ensuring that liquid carbon dioxide can be evenly sprayed into every corner inside the housing 1, effectively improving the fire extinguishing effect.

[0071] In addition, an exhaust fan 11 is installed on the top of the enclosure 1, and an automatic air intake regulator 12 is installed on the side wall. During firefighting, the exhaust fan 11 is activated to expel the smoke from inside the enclosure 1, reducing the internal smoke concentration and preventing smoke accumulation from affecting the firefighting effect and personnel safety. The automatic air intake regulator 12 automatically adjusts the air intake according to the internal pressure and fire situation of the enclosure 1, ensuring air circulation inside the enclosure 1, helping to reduce the temperature at the fire scene, and providing a suitable oxygen environment for firefighting, preventing incomplete firefighting or the generation of toxic gases due to insufficient oxygen.

[0072] The control principle of this embodiment is as follows:

[0073] The entire fire extinguishing system is controlled by a smoke sensor as the core triggering element. The smoke sensor uses photoelectric or ionization smoke detection technology, which can sensitively detect changes in smoke concentration inside the enclosure 1. When the smoke concentration reaches a preset threshold, the smoke sensor outputs an electrical signal, which is transmitted to the alarm 13 to trigger an audible and visual alarm, and also to the controller (not shown in the attached diagram, but can be integrated into the control circuit of the enclosure 1).

[0074] After receiving a signal from the smoke sensor, the controller sequentially activates the various actuators of the fire extinguishing device according to a preset control program. First, the controller opens the solenoid valve at the outlet of the fire extinguishing tank 61, allowing liquid carbon dioxide to flow towards the nozzle 81. Simultaneously, the controller activates the first motor 71 and the second motor 51, driving the lifting plate 41 to move up and down and the nozzle 81 to swing, respectively. By adjusting the motor speed and running time, the controller precisely controls the trajectory and spray angle of the nozzle 81, ensuring that the extinguishing medium evenly covers the interior space of the housing 1.

[0075] During the firefighting process, the controller also monitors parameters such as pressure, temperature, and smoke concentration inside the enclosure 1 in real time. Through feedback control, it adjusts the speed of the exhaust fan 11 and the opening of the automatic air intake regulator 12 to dynamically regulate the internal environment of the enclosure 1. For example, when the smoke concentration is high, the controller increases the speed of the exhaust fan 11 to accelerate the exhaust of smoke; when the temperature inside the enclosure 1 is high, the controller appropriately increases the air intake of the automatic air intake regulator 12 to reduce the temperature at the fire scene.

[0076] Based on the above control principles, the power distribution cabinet with fire extinguishing structure in this embodiment can achieve full-process control of automatic detection, automatic alarm, automatic fire extinguishing, and automatic environmental adjustment, effectively improving the fire extinguishing performance and safety of the power distribution cabinet.

[0077] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0078] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power distribution cabinet with a fire extinguishing structure, comprising a cabinet body (1) and a door (2) connected to the cabinet body (1), characterized in that, Also includes: Support arm plate (3), there are two support arm plates (3), which are vertically and parallelly fixed on both sides of the inner side of the box door (2), and slide rail (31) is fixed on the support arm plate (3); Mounting plate (4), which is slidably connected to the slide rail (31), and is driven by a lifting drive assembly (7) mounted on the support arm plate (3); a rotating rod (8) is rotatably connected to one side of the two opposing mounting plates (4), and a plurality of nozzles (81) are mounted on the rotating rod (8); Rotary drive assembly (5), which is mounted on the mounting plate (4) and connected to the end of the rotating rod (8), is used to drive the rotating rod (8) to rotate, thereby adjusting the spray angle of the nozzle (81); An external mounting bracket (6) is fixed to the outer side wall of the housing (1) and is used to hold the fire extinguishing tank (61), which is connected to the nozzle (81) through a pipeline.

2. A power distribution cabinet with a fire extinguishing structure according to claim 1, characterized in that, The mounting plate (4) includes a lifting plate (41) and a side plate (42). The lifting plate (41) is slidably connected to the slide rail (31). The side plate (42) is fixed to the side edge of the lifting plate (41) facing the inside of the housing (1). The rotating rod (8) is rotatably connected to the side plate (42) through a bearing (82).

3. A power distribution cabinet with a fire extinguishing structure according to claim 2, characterized in that, The lifting drive assembly (7) includes a first motor (71), a drive wheel (72), a driven wheel (73), and a belt (74); the first motor (71) is fixed to the top of the support arm plate (3), the drive wheel (72) is fixedly connected to the power output shaft of the first motor (71), the driven wheel (73) is rotatably connected to the bottom of the support arm plate (3), the belt (74) is sleeved on the drive wheel (72) and the driven wheel (73), and the belt (74) is fixedly connected to the lifting plate (41) through a connecting plate (75).

4. A power distribution cabinet with a fire extinguishing structure according to claim 2, characterized in that, The rotation drive assembly (5) includes a second motor (51), a turntable (52), a clamping plate (53), and a connecting rod (54); the second motor (51) is fixed on the side plate (42), the center of the turntable (52) is fixed to the power output shaft of the second motor (51), the clamping plate (53) is fixed to the end of the rotating rod (8), one end of the connecting rod (54) is hinged to the edge of the turntable (52), and the other end is hinged to the clamping plate (53).

5. A power distribution cabinet with a fire extinguishing structure according to claim 1, characterized in that, The external mounting bracket (6) includes a fixed bracket (62) and a hydraulic clamping mechanism (63). The fixed bracket (62) is fixed on the outer side wall of the box (1), and the hydraulic clamping mechanism (63) is installed on the fixed bracket (62). The hydraulic clamping mechanism (63) clamps the fire extinguishing tank (61) by controlling the extension and retraction of the hydraulic cylinder.

6. A power distribution cabinet with a fire extinguishing structure according to claim 1, characterized in that, The top of the housing (1) has an exhaust fan (11), and the side wall of the housing (1) has an automatic air intake regulator (12).

7. A power distribution cabinet with a fire extinguishing structure according to claim 1, characterized in that, A smoke detector is installed inside the housing (1).

8. A power distribution cabinet with a fire extinguishing structure according to claim 7, characterized in that, An alarm (13) is installed on the inner wall of the enclosure (1), and the alarm (13) is activated based on the signal received by the smoke sensor.

9. A power distribution cabinet with a fire extinguishing structure according to claim 1, characterized in that, The fire extinguishing tank (61) stores liquid carbon dioxide, and the outlet of the fire extinguishing tank (61) is controlled by a solenoid valve.

10. A power distribution cabinet with a fire extinguishing structure according to claim 1, characterized in that, The connecting pipe between the fire extinguishing tank (61) and the nozzle (81) passes through the side wall of the box (1) and is a fireproof pipe.

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