A power distribution device

Abstract

The present application provides a power distribution device, which relates to the technical field of distribution cabinets and includes: a cabinet body, an installation rack is installed inside the cabinet body; a power-off component, the power-off component is arranged on the installation rack, the power-off component is electrically connected to an external power supply, and the power-off component is used to disconnect the power supply from the external power supply when a fire breaks out inside the cabinet body; a fire extinguishing component, the fire extinguishing component is arranged on the installation rack, and the fire extinguishing component is used to extinguish the fire when a fire breaks out inside the cabinet body; the power-off component includes: a main cable and two counterweights, one end of the main cable far away from the installation rack is connected with a connector, an interface is inserted into the connector, an outer disc is connected to the outer wall of the interface, the interface is connected to the external power supply, and the two counterweights are respectively slidably connected to both sides of the installation rack; the fire extinguishing component includes a fire extinguisher, and the fire extinguisher is arranged on the side close to the counterweight. The power distribution device cuts off the power through the power-off component and then extinguishes the fire through the fire extinguishing component to solve the problem that the existing power distribution device has certain fire hazards and cannot automatically cut off the power and extinguish the fire.

Description

Technical Field

[0001] This application relates to the technical field of distribution cabinets, and specifically relates to a power distribution device. Background Art

[0002] Distribution cabinets are divided into power distribution cabinets, lighting distribution cabinets, and metering cabinets. They are the end-level devices of the power distribution system. Distribution cabinets are used in occasions where the load is relatively dispersed and the number of circuits is small. According to the electrical wiring requirements, switchgear, measuring instruments, protective electrical appliances, and auxiliary equipment are assembled in a closed or semi-closed metal cabinet or on a screen to form a low-voltage power distribution device.

[0003] Currently, a flat-opening single door is installed on the front of the distribution cabinet body. A rectangular hole is opened in the upper part of the single door. A small door is hinged and installed on the single door, and the whole small door is embedded in the rectangular hole of the single door; a small box body is fixedly installed inside the single door at the inner side of the rectangular hole. A touch screen is installed in the small box body. The small door is used to protect the touch screen from the outside; tempered glass is installed on the small door for observing the data monitoring of the touch screen; two holes are reserved on the small door for installing an audible and visual alarm and a power indicator light; a hole is reserved under the small door on the single door on the front of the cabinet body for installing an emergency stop button. The beneficial effects are as follows: 1. The touch screen is protected by a small door and has tempered glass, which does not affect data monitoring and is also convenient for operation. Moreover, the touch screen can achieve good rain and dust protection effects. 2. A silent fan is installed to force the air to exhaust outward. The hot air in the cabinet rises, and the fan at the upper part is more conducive to exhausting the air outward, keeping the temperature in the cabinet at a relatively reasonable value.

[0004] However, in the prior art, there are certain fire hazards in the distribution cabinet. Summary of the Invention

[0005] This application provides a power distribution device to solve the technical problem that when a fire occurs in the existing power distribution device, it cannot automatically extinguish the fire.

[0006] This application provides a power distribution device, including:

[0007] A cabinet body, an installation frame is installed inside the cabinet body;

[0008] A power-off component, the power-off component is arranged on the installation frame, the power-off component is electrically connected to an external power supply, and the power-off component is used to disconnect the power supply from the external power supply when a fire occurs in the cabinet body;

[0009] An extinguishing component, the extinguishing component is arranged on the installation frame, and the extinguishing component is used to extinguish the fire when a fire occurs in the cabinet body;

[0010] The power-off component includes: a main cable and two counterweights. The main cable is connected to the rear side of the installation frame and is connected to the circuit inside the installation frame. One end of the main cable away from the installation frame is connected with a connector, and the external power supply is electrically connected to the interface;

[0011] The two counterweight blocks are respectively slidably connected to both sides of the mounting frame. An outer disc is connected to the outer wall of the interface, and a frame-shaped frame is connected between the counterweight blocks;

[0012] The fire extinguishing assembly includes: fire extinguishers, which are respectively installed on both sides of the mounting frame through hoop clamps and are arranged on the side close to the counterweight blocks.

[0013] In some embodiments, a pull rope is connected to the top of each counterweight block, and a fuse piece is connected between the pull ropes connected to the two counterweight blocks. The fuse piece is located in front of the mounting frame;

[0014] A plurality of guide rods are arranged on the mounting frame, and the pull ropes slide in the guide rods. The guide rods are used to guide the sliding direction of the pull ropes.

[0015] In some embodiments, supports are respectively connected to both sides of the mounting frame. A pressure rod is rotatably connected to the supports, and a pull rod is hinged to the top of the counterweight block.

[0016] In some embodiments, the ends of the pull rods away from the counterweight blocks are respectively hinged to the ends of the pressure rods away from the supports. A pressure handle switch is arranged on the top of the fire extinguisher, and the pressure rods are respectively located above the pressure handle switch;

[0017] Among them, when the pressure rod rotates, the pressure rod abuts against the pressure handle switch.

[0018] In some embodiments, elastic pieces are respectively connected to both sides of the mounting frame. There are a plurality of elastic pieces, and mounting plates are respectively connected to the elastic pieces. The mounting plates are located between the fire extinguisher and the counterweight blocks. A plurality of touch balls are connected to the side of the mounting plate close to the fire extinguisher, a serrated groove frame is connected to the side of the mounting plate close to the counterweight block, and a sliding shaft is connected to the counterweight block.

[0019] In some embodiments, a serrated chute is arranged on the serrated groove frame, and the sliding shaft is slidably connected to the serrated chute of the serrated groove frame;

[0020] Among them, when the pressure rod rotates, the touch ball abuts against the fire extinguisher.

[0021] In some embodiments, the power distribution equipment further includes:

[0022] A sealing assembly, which is arranged on the shell of the cabinet body and is arranged inside the cabinet body. The sealing assembly is used to isolate the outside air from entering the cabinet body when a fire breaks out inside the cabinet body;

[0023] The sealing assembly includes:

[0024] Ventilation window, the ventilation window is installed on the rear side of the cabinet body, and a plurality of ventilation grooves are provided on the ventilation window, and sealing sliding rods are respectively slidably connected in the ventilation grooves.

[0025] In some embodiments, the sealing assembly further includes:

[0026] Smooth rod, both ends of the smooth rod are respectively connected with connecting rods, the rear sides of the connecting rods are connected with a plurality of connecting pieces, the connecting pieces are respectively connected with both ends of a plurality of sealing sliding rods, the bottom of the frame-shaped frame is connected with a sliding groove frame, and a sliding groove is provided on the sliding groove frame, and the smooth rod is slidably connected with the sliding groove of the sliding groove frame.

[0027] In some embodiments, the bottom edge of the ventilation groove of the ventilation window is set as an inclined surface, the top edge of the sealing sliding rod is set as an inclined surface, the inclined surface of the sealing sliding rod and the inclined surface of the ventilation groove are slidably connected, the connecting rod is located in front of the ventilation window, and the sealing sliding rod is located behind the ventilation window.

[0028] In some embodiments, the power distribution device further includes a controller, a load sensor and a release assembly;

[0029] The load sensor includes a current sensor, a voltage sensor and a temperature sensor;

[0030] The release assembly includes a motor, a spring and a release groove, the spring is slidably connected with the release groove, one end of the spring is connected with a counterweight block through the release groove, and the motor is used to push the spring to slide in the release groove;

[0031] The serrated groove frame includes a serrated groove frame body, a sliding groove frame, a tooth-shaped adjusting device and a driver, the sliding groove frame is slidably connected with the serrated groove frame body, and the driver is used to drive the tooth-shaped adjusting device to adjust the spacing of the teeth;

[0032] The controller is configured to:

[0033] Obtain the detection data of the load sensor, and the detection data includes current data, voltage data and temperature data;

[0034] If the detection data exceeds the preset detection range, send instructions to the driver and the motor to control the driver to drive the tooth-shaped adjusting device and control the motor to drive the spring.

[0035] The present application provides a power distribution device, including: a cabinet body, an installation rack is installed inside the cabinet body; a power-off component, the power-off component is arranged on the installation rack, the power-off component is electrically connected to an external power supply, and the power-off component is used for disconnecting the power supply from the external power supply when a fire breaks out inside the cabinet; a fire extinguishing component, the fire extinguishing component is arranged on the installation rack, and the fire extinguishing component is used for extinguishing a fire when a fire breaks out inside the cabinet; the power-off component includes: a main cable and two counterweights, the main cable is connected to the rear side of the installation rack, one end of the main cable away from the installation rack is connected with a connector, an interface is plugged on the connector, an outer disc is connected to the outer wall of the interface, the interface is connected to the external power supply, the two counterweights are respectively slidably connected to both sides of the installation rack, the fire extinguishing component includes fire extinguishers, and the fire extinguishers are respectively installed on both sides of the installation rack through hoop fasteners and are arranged on one side close to the counterweights. The power distribution device cuts off the power through the power-off component and then extinguishes the fire through the fire extinguishing component, which can solve the problems that the existing power distribution devices have certain fire hazards and cannot automatically cut off the power and extinguish the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0037] Figure 1 is the external view schematic diagram of the present application;

[0038] Figure 2 is the overall structure schematic diagram of the present application;

[0039] Figure 3 is the standardized module structure schematic diagram of the present application;

[0040] Figure 4 is the power-off component structure schematic diagram of the present application;

[0041] Figure 5 is the frame structure schematic diagram of the present application;

[0042] Figure 6 is the fire extinguishing component structure schematic diagram of the present application;

[0043] Figure 7 is the fire extinguisher structure schematic diagram of the present application;

[0044] Figure 8 is the serrated groove frame structure schematic diagram of the present application;

[0045] Figure 9 is the seal component structure schematic diagram of the present application;

[0046] Figure 10 It is a schematic diagram of the chute frame structure of the present application;

[0047] Figure 11 It is a schematic diagram of the connecting rod structure of the present application;

[0048] Figure 12 It is a schematic diagram of the ventilation window structure of the present application;

[0049] Figure 13 It is a schematic diagram of the sealing slide rod structure of the present application.

[0050] Explanation of reference numerals:

[0051] 1 - Cabinet; 2 - Mounting frame; 3 - Standardized slot; 4 - Standardized module; 5 - Power-off component; 51 - Main cable; 52 - Connector; 53 - Interface; 54 - Outer disk; 55 - Fuse piece; 56 - Pull rope; 57 - Counterweight; 58 - Frame-shaped frame, 59 - Guide rod; 6 - Fire extinguishing component; 61 - Fire extinguisher; 62 - Press switch; 63 - Pull rod; 64 - Support; 65 - Press rod; 66 - Slide shaft; 67 - Elastic piece; 68 - Mounting plate; 69 - Serrated groove frame; 610 - Contact ball; 7 - Sealing component; 71 - Ventilation window; 72 - Chute frame; 73 - Smooth rod; 74 - Connecting rod; 75 - Sealing slide rod; 76 - Connecting piece. Detailed implementation manners

[0052] In order to enable those skilled in the art to better understand the technical solutions in the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0053] Since in some technologies, when a fire occurs in a power distribution device, it is impossible to automatically extinguish the fire. To solve this technical problem, the present application provides a power distribution device, and the following will explain the structures of each part of the power distribution device:

[0054] Refer to Figure 1 、 Figure 2 、 Figure 3, this application provides a power distribution device, including a cabinet body 1. Inside the cabinet body 1, there is an installation rack 2. Multiple standardized slots 3 are provided on the installation rack 2, and multiple standardized modules 4 are respectively inserted into the multiple standardized slots 3. There is a circuit inside the installation rack 2. The main cable 51 is connected to the circuit inside the installation rack 2. After the connector 52 is inserted into the interface 53, the circuit inside the installation rack 2 is powered on. The standardized module 4 can be set as a power module, a metering module, a protection module, a control module, and a communication module. The standardized module 4 is inserted into the standardized slot 3 to achieve power-on. Users can install different standardized modules 4 according to actual usage requirements. When it is necessary to replace different standardized modules 4, after power-off, the standardized module 4 to be replaced is pulled out and the required standardized module 4 is inserted. The operation is convenient and the replacement efficiency is high. Through the setting of multiple standardized modules 4, users can set multiple standardized modules 4 with different functions and different power connection specifications according to usage requirements. In the working conditions where the power connection panel, electric meter, and control panel need to be frequently replaced, the operation of replacing the standardized module 4 by the user is relatively convenient, and the replacement efficiency is high, saving operation time. At the same time, it is also convenient for the fault maintenance of different standardized modules 4.

[0055] Furthermore, the power distribution device further includes a power-off component 5, which is used to cut off the power supply when a fire breaks out inside the cabinet body 1. The power-off component 5 includes a main cable 51, which is connected to the rear side of the installation rack 2. One end of the main cable 51 away from the installation rack 2 is connected to a connector 52, and a connector 53 is inserted into the connector 52. The outer wall of the interface 53 is connected to an outer disk 54, and the interface 53 is connected to an external power supply. The power-off component 5 further includes two counterweights 57, which are respectively slidably connected to both sides of the installation rack 2. The tops of the two counterweights 57 are respectively connected to a pull rope 56. Multiple guide rods 59 are provided on the installation rack 2, and the multiple guide rods 59 guide the two pull ropes 56. Refer to Figure 4 and Figure 5, a fuse link 55 is connected between two drawstrings 56. The fuse link 55 is located on the front side of the mounting bracket 2. Under normal conditions, the fuse link 55 pulls up two counterweights 57 through the two drawstrings 56, so that the two counterweights 57 are suspended at the highest position. When a fire breaks out inside the cabinet 1, the fuse link 55 gradually melts and breaks. After the fuse link 55 breaks, the two counterweights 57 fall. A frame-shaped frame 58 is connected between the two counterweights 57. The frame-shaped frame 58 is located behind the mounting bracket 2. The bottom surface of the frame-shaped frame 58 contacts the top surface of the outer disc 54. When the frame-shaped frame 58 moves downward, it pulls the interface 53 downward through the outer disc 54, so that the interface 53 and the connector 52 are disconnected, thereby disconnecting the main cable 51 from the external power supply; through the setting of the power-off component 5, the two counterweights 57 can automatically fall when a fire breaks out inside the cabinet 1, and the connection between the connector 52 and the interface 53 is disconnected through the cooperation of the frame-shaped frame 58 and the outer disc 54, so that the main cable 51 is disconnected from the external power supply, thereby playing the role of disconnecting the energy source, and at the same time minimizing the impact on the external power supply and reducing losses.

[0056] In some embodiments, the fuse link 55 includes a primary fuse link and a secondary fuse link. The primary fuse link is a low-melting-point alloy, such as Wood's alloy, with a melting point of 70 °C, and is connected in parallel to the temperature monitoring point of the main cable 51. It triggers an alarm by monitoring the temperature rise of the main cable connector. The primary fuse link is partially melted due to the temperature reaching the melting point, but due to its parallel design, the main circuit remains conductive. Among them, the main circuit includes multiple main cable segments, such as: incoming line busbar, main cable 51, secondary fuse link, main cable 51, circuit breaker, outgoing terminal.

[0057] For example: when the temperature at the connection between the main cable 51 and the incoming line busbar > 70 °C, the primary fuse link melts and sends an alarm signal.

[0058] The secondary fuse link is a standard fuse link with a melting point of 120 °C, and is connected in series between the main cable 51 and the load, undertaking the power-off task during overload / short circuit. The current-carrying capacity of the main cable 51 matches the rated current of the secondary fuse link. For example, a cable of 50 mm² corresponds to a fuse link of 200 A.

[0059] To achieve temperature detection, NTC (Negative Temperature Coefficient, thermistor) can also be set on the primary fuse link and the secondary fuse link, with an accuracy of ±0.5 °C.

[0060] In some embodiments, a controller is further included. The controller is configured to receive the data sent by the primary fuse link and the secondary fuse link, and based on data analysis, issue a response. Exemplarily, if the temperature continues to rise to 120 °C, the controller starts a secondary response, forcibly disconnects the SSR, cuts off the main circuit, and the secondary fuse link melts to ensure physical isolation and record the fault data (temperature curve, melting time).

[0061] When using the fuse link 55 for circuit protection, due to its fusing characteristics, there is a certain reaction delay. This delay may cause the current to continue to flow before the fuse link 55 melts, which may lead to more serious circuit damage, such as electrical fires, equipment damage, etc. Therefore, by introducing time-delay control in the system, more precise power-off can be achieved before the fuse link 55 melts, thereby improving the protection effect.

[0062] When the current exceeds the rated safety current of the fuse link 55, the metal wire inside the fuse link 55 will melt due to overheating, thereby cutting off the circuit. However, there is a certain time delay in the fusing process. When the current reaches the threshold of the fuse link 55, the fuse link 55 will not melt immediately, but after a certain heating time, until the temperature is high enough to melt. Therefore, before the fuse link 55 melts, the current may still flow, resulting in continuous high voltage or overcurrent damage to the circuit.

[0063] In some embodiments, the controller is configured to preset a time window, and the time window monitors the current or temperature change through a sensor. Among them, the sensor can be a temperature sensor or a current sensor. When an overload or short-circuit situation is detected, a time-delay timer will be started, and the timer is set to start other control power-off programs within a period of time before the fuse link 55 is triggered.

[0064] By introducing time-delay control, other power-off means can be used before the fuse link 55 melts, such as an electronic switch or a solid-state relay to disconnect the power supply in advance, avoiding the risks brought by the delay of the fuse link 55. During the time window period, if it is detected that the current continuously exceeds the set threshold (or the temperature is too high), the electronic switch (such as a solid-state relay, MOSFET, etc.) can quickly cut off the power supply before the fuse link 55 melts, preventing the current from continuing to flow and reducing potential damage.

[0065] During the process of the counterweight 57 cooperating with the fuse link 55, an overweight or underweight counterweight 57 may cause the reaction to be too fast or too slow, which may not be able to cut off the power in time or may cut off the power by mistake. Once the fuse link 55 is triggered, it needs to be replaced, and the counterweight 57 may require disassembling and adjusting the equipment, increasing the maintenance difficulty.

[0066] In some embodiments, a load sensor is set, such as a current sensor, a voltage sensor or a temperature sensor to monitor the current and the load condition of the circuit. When the load changes or the current exceeds the set threshold, the sensor will output a signal to the controller. The controller receives the data of the sensor, processes the load information in real time, and decides whether to adjust the pressure or position of the counterweight 57 through a predetermined logic algorithm. The controller is used to send a control instruction to the driving device to adjust the counterweight 57.

[0067] Furthermore, the counterweight 57 is connected to a driving device for changing the position or pressure of the counterweight 57. The driving device can be an electric motor. The position of the counterweight 57 is precisely adjusted by the electric motor. For example, a servo motor and a screw drive device such as a lead screw can be used to achieve displacement control. A linear slide rail, a lifting platform or a ball screw can also be provided to ensure the moving accuracy of the counterweight 57. The position of the counterweight 57 can be changed according to the instruction of the controller, so as to adjust the triggering pressure on the fuse link 55.

[0068] To ensure precise adjustment, the controller is also communicatively connected to a feedback device. The feedback device can monitor the position change of the counterweight 57 in real time and feed it back to the controller. The feedback device includes a position sensor. Exemplarily, parameters such as current and temperature are monitored by the sensor, and the parameter data is input into the controller for real-time processing, that is, the changes in current or temperature are compared with a preset threshold to determine whether it is within the normal range currently. According to the rate of change of the real-time current, temperature or load, the fluctuation trend of the load is analyzed. For a sudden increase in load (such as a high current at the start-up moment), it is necessary to determine whether the load exceeds the safe range. If the load fluctuates violently in a short time (such as a short circuit or a sudden overload), measures are taken in advance to adjust the pressure or position of the counterweight 57 to ensure that the protection mechanism responds in time.

[0069] According to the change of the load, the controller automatically changes the position or the applied pressure of the counterweight 57 by adjusting the driving device. When the load increases, if the current or temperature exceeds the preset value, the controller issues an instruction to the driving device to adjust the position of the counterweight 57, so that it applies a greater pressure or more directly triggers the fuse link 55, and the current can be cut off earlier.

[0070] When the load decreases, if the load drops, the pressure can be reduced by adjusting the position of the counterweight 57 to prevent over-triggering of the protection. The adjustment of the position and pressure of the counterweight 57 is ensured to be precisely controlled by the feedback device. For example, a position sensor is used to feedback the specific position of the counterweight 57. The controller can also adjust the output of the electric motor according to the feedback data to ensure that the counterweight 57 accurately reaches the required position and pressure values.

[0071] To predict the possibility of a fire occurring, in some embodiments, the controller is further configured to:

[0072] Obtain the data of the load sensor, and the data at least includes temperature data, humidity data and oxygen concentration data;

[0073] Pre-train an LSTM (Long Short Term Memory) model;

[0074] Input the data of the load sensor into the pre-trained LSTM model to predict the probability value of fire risk based on the LSTM model.

[0075] LSTM is used to process time series data and can retain information over a long time span. LSTM is suitable for analyzing and predicting time-related change trends and is applicable to fire prediction. It can predict the occurrence probability of a fire by analyzing the change trends of environmental factors, such as data on temperature, humidity, oxygen concentration, etc.

[0076] For temperature data, after a fire occurs, high temperatures appear. By monitoring temperature changes, LSTM can identify abnormal temperature rising trends. For humidity data, the change in humidity affects the spread of a fire, and the humidity will change during a fire. For oxygen concentration data, the combustion process of a fire consumes oxygen, and the oxygen concentration is used to judge whether there is a potential fire source.

[0077] Exemplarily, if the oxygen concentration continuously decreases over a period of time, it means that the fire is consuming oxygen and combustion is occurring in a certain area. The LSTM model can identify the fire situation through this change trend. Again exemplarily, if the temperature rises sharply in a short period of time, LSTM may identify this as a precursor to a fire. By combining other environmental parameters, the LSTM model can give an early warning.

[0078] Furthermore, refer to Figure 6 and Figure 7, the power distribution equipment further includes a fire extinguishing component 6 for extinguishing fire when a fire breaks out in the cabinet body 1. The fire extinguishing component 6 includes two fire extinguishers 61, and the two fire extinguishers 61 are respectively installed on both sides of the mounting bracket 2 through hoop fasteners. The two fire extinguishers 61 are respectively located in front of the two counterweight blocks 57. Both sides of the mounting bracket 2 are respectively connected with supports 64, and a pressure lever 65 is rotatably connected to the supports 64. The top of the counterweight block 57 is hinged with a pull rod 63. One ends of the two pull rods 63 far away from the counterweight blocks 57 are respectively hinged with one ends of the two pressure levers 65 far away from the supports 64. A pressure handle switch 62 is arranged on the top of the fire extinguisher 61. The two pressure levers 65 are respectively located above the two pressure handle switches 62. When the two pressure levers 65 move, they respectively contact the two pressure handle switches 62. When the counterweight blocks 57 fall, the pull rods 63 pull down the pressure levers 65, causing the pressure levers 65 to swing downward with the supports 64 as the center. When the pressure levers 65 swing downward, they contact the pressure handle switches 62 and squeeze them downward. After being squeezed, the pressure handle switches 62 open the fire extinguishers 61, so that the two fire extinguishers 61 spray the fire extinguishing agent at the same time. The fire extinguishing agent covers the front side of the mounting bracket 2 and the inner wall of the cabinet body 1, thereby extinguishing the fire source; both sides of the mounting bracket 2 are respectively connected with two groups of elastic pieces 67. One group of elastic pieces 67 is provided with a plurality of elastic pieces 67 having a certain elastic effect. Two mounting plates 68 are respectively connected to the two groups of elastic pieces 67. The mounting plates 68 are located between the fire extinguishers 61 and the counterweight blocks 57. Refer to Figure 8, on the side of the mounting plate 68 facing the fire extinguisher 61, a plurality of contact balls 610 are connected. On the side of the mounting plate 68 facing the counterweight 57, a serrated groove frame 69 is connected. A sliding shaft 66 is connected to the counterweight 57. A serrated chute is provided on the serrated groove frame 69. The sliding shaft 66 is in sliding contact with the serrated chute of the serrated groove frame 69. When the counterweight 57 falls, it drives the sliding shaft 66 to move downward. When the sliding shaft 66 moves downward, it slides along the serrated chute of the serrated groove frame 69, causing the serrated groove frame 69 to continuously move backward under the reaction force of the sliding shaft 66 and then rebound forward under the elastic force of a set of elastic pieces 67. A plurality of contact balls 610 on the mounting plate 68 are set as a group. The two groups of contact balls 610 contact two fire extinguishers 61 respectively during movement. When the mounting plate 68 rebounds forward, it drives the plurality of contact balls 610 to move forward, causing the plurality of contact balls 610 to impact the fire extinguisher 61. When the two fire extinguishers 61 are opened, the two groups of contact balls 610 respectively impact the two fire extinguishers 61 multiple times, causing the two fire extinguishers 61 to vibrate with a certain amplitude, achieving the effect of slight shaking, thereby shaking the fire extinguishing agent inside evenly to ensure the use effect. The fire extinguishers 61 are separately arranged and are not connected to other structures under normal conditions, which is convenient for regular replacement; through the setting of the fire extinguishing component 6, after a fire breaks out in the cabinet body 1, the two fire extinguishers 61 can automatically spray the fire extinguishing agent to extinguish the fire source in time and prevent the fire from spreading; through the setting of the two groups of contact balls 610, the two groups of contact balls 610 can respectively knock the two fire extinguishers 61 multiple times, causing the fire extinguishers 61 to vibrate, thereby vibrating the fire extinguishing agent inside evenly and avoiding the phenomenon that part of the fire extinguishing agent settles and caking after being stationary for a long time, thus affecting the use effect.

[0079] Since the internal structure of the power distribution equipment is relatively compact, in order to make the fire extinguishing agent inside the fire extinguisher 61 more evenly distributed and improve the fire extinguishing effect, in some embodiments, a vibration device is provided inside the contact ball 610. The vibration device includes a piezoelectric element, an electrode, and a vibration transmission structure. The piezoelectric element is made of ceramic material and is used to convert an electrical signal into mechanical vibration, which can be in the form of a thin sheet or a cylinder. The electrode is connected to both ends of the piezoelectric element, and when a voltage is applied, the piezoelectric element deforms through the electric field. The electrode is a conductive material, for example, metal or a conductive coating. The vibration transmission structure is used to transmit the mechanical vibration generated by the piezoelectric element to the inside of the fire extinguisher 61 to ensure that the vibration effectively affects the distribution of the fire extinguishing agent. The piezoelectric element can be directly connected to the inner wall of the container inside the fire extinguisher 61, or the vibration can be transmitted to the inside of the fire extinguisher 61 through an elastic material (such as a spring, a rubber pad).

[0080] The controller is used to apply an appropriate electrical signal to the piezoelectric element to adjust the vibration frequency and amplitude. The required voltage and frequency can be generated by a microcontroller, an oscillator, and an amplifier.

[0081] Exemplarily, a voltage is applied across the piezoelectric element to stimulate its deformation. The waveform and amplitude of the applied voltage determine the vibration frequency and amplitude of the piezoelectric ceramic. By adjusting the frequency and amplitude in the circuit, the intensity of the vibration can be controlled. When the piezoelectric ceramic deforms, it generates periodic micro-displacements, which are converted into mechanical vibrations through connection with the inner wall of the fire extinguisher 61 (such as an elastic structure or a bracket), shaking the fire extinguishing agent. These vibrations propagate inside the fire extinguisher 61, preventing the fire extinguishing agent from settling or caking during storage and spraying it evenly when triggered, improving the fire extinguishing effect.

[0082] To ensure the uniformity of the fire extinguishing agent, the vibration frequency and amplitude need to be precisely controlled according to the type of the fire extinguishing agent (powder type, liquid type, etc.).

[0083] To further improve the fire extinguishing efficiency and reduce the probability of the fire source reigniting, in some embodiments, the power distribution device further includes an inert gas storage tank, a gas control valve, an adjustment device, a gas delivery pipeline, and a nozzle.

[0084] The inert gas storage tank is used to store inert gas. For example, nitrogen, carbon dioxide. It can be understood that the gas can be a compressed gas or a liquid gas, which is converted into a gas state through a gas pressurization system. The material of the gas storage tank is a high-pressure-resistant metal material, such as aluminum alloy or stainless steel, to ensure safety under high pressure.

[0085] The gas control valve and the adjustment device are used to control the release and flow rate of the inert gas. The adjustment device can be automatically opened after fire extinguishing or opened upon receiving an instruction to continuously release the inert gas. The gas control valve can control the release time and flow rate of the gas. The gas control valve is linked with the load sensor of the fire extinguisher 61 and is automatically activated after a preset time when the fire is extinguished.

[0086] In some embodiments, the controller is configured to:

[0087] Obtain the activation time of the fire extinguisher 61, and after a preset time, send instructions to the adjustment device and the gas control valve to start controlling the release of the inert gas by the gas regulating valve.

[0088] Exemplarily, after the fire extinguishing agent is sprayed out and the fire source has been extinguished, to prevent reignition, the inert gas storage tank is automatically opened through the gas control valve, and nitrogen is continuously sprayed into the interior of the fire extinguisher 61 through the gas pipeline and the nozzle, reducing the oxygen concentration, further ensuring lack of oxygen around the fire source, and preventing reignition. When the internal temperature and gas concentration of the fire extinguisher 61 are stable, the gas control valve is automatically closed to end the fire extinguishing process.

[0089] To control the activation intensity and vibration effect of the fire extinguisher 61, in some embodiments, a release assembly is further provided. The release assembly includes a motor, a spring, and a release groove. The spring can slide within the release groove, and one end of the spring is connected to the counterweight 57 through the release groove. When the spring receives the force from the motor, it pushes the counterweight 57 downward through the release groove.

[0090] Through the release groove, the acting force of the spring is transmitted to the counterweight 57, generating a linear driving force that causes the counterweight 57 to slide downward and be released. This can make the movement of the counterweight 57 smoother, avoid sudden impact forces, and at the same time enable more precise control of the preload force and compression degree of the spring.

[0091] In different fire situations, the elastic force at the time of triggering can be adjusted to make the release speed of the counterweight 57 more precise. For example, the force of the spring can be adjusted according to the ambient temperature, fire type, or fire severity, so that the counterweight 57 is released at different speeds, thereby affecting the activation intensity and vibration effect of the fire extinguisher 61.

[0092] For example, the fire type or fire severity can be detected by a temperature sensor. When the temperature exceeds the set threshold, it indicates a relatively large fire intensity, and the preload force of the spring can be automatically increased to accelerate the activation of the fire extinguisher 61.

[0093] To cooperate with the spring, in some embodiments, the tooth shape angle or tooth pitch density of the serrated groove frame 69 is adjustable. The serrated groove frame 69 includes a serrated groove frame body, a sliding groove frame, a tooth shape adjustment device, and a driver. The serrated groove frame body is internally provided with a serrated groove, and the tooth shape can be designed as a rectangle, trapezoid, circular arc, etc., which can be set according to the sliding friction characteristics. The gap between the tooth shapes is the tooth pitch, which can be increased or decreased through the tooth shape adjustment device.

[0094] The sliding groove frame can be a sliding bar or a sliding plate, and the sliding bar or sliding plate can move back and forth within the groove frame to change the tooth pitch. The tooth shape adjustment device can be an electric slider or a tooth pitch adjustment wheel, and the electric slider or tooth pitch adjustment wheel can be adjusted through the driver to change the distance between the teeth. The driver can drive a screw mechanism, and through the rotation of the screw, it pushes the sliding bar or the tooth pitch adjustment wheel to change the gap of the tooth shape.

[0095] Exemplarily, according to the control signal sent by the controller, the driver, such as a stepper motor or a servo motor, starts to work. The motor drives the screw, pushing the sliding bar or the tooth shape adjustment device within the groove frame to change the gap between the tooth shapes within the tooth frame. According to the intensity of the fire, the driver can automatically increase or decrease the tooth pitch to adjust the resistance, so that the fire extinguisher 61 can be activated at an appropriate speed.

[0096] To achieve better starting strength and vibration effect, the tension of the spring and the pitch of the serrated groove frame 69 can be precisely controlled through combined adjustment, and the tension of the spring and the pitch can be automatically adjusted according to the monitored fire intensity parameters. For example, when the fire intensity increases, the spring tension increases, and at the same time the pitch also increases, enabling the counterweight 57 to be quickly released and extinguish the fire rapidly; when the fire intensity is low, the tension and pitch are reduced to make the fire extinguisher 61 respond more smoothly. Further, the power distribution equipment further includes a sealing component 7 for isolating the air circulation when a fire breaks out in the cabinet body 1. Refer to Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13 . The sealing component 7 includes a ventilation window 71. The ventilation window 71 is installed at the rear side of the cabinet body 1. A plurality of ventilation grooves are provided on the ventilation window 71. Sealing slide rods 75 are respectively slidably connected in the plurality of ventilation grooves of the ventilation window 71. The sealing component 7 further includes a smooth rod 73. Both ends of the smooth rod 73 are respectively connected with connecting rods 74. A plurality of connecting pieces 76 are connected to the rear side of the connecting rods 74. The plurality of connecting pieces 76 of the two connecting rods 74 are respectively connected with both ends of the plurality of sealing slide rods 75. Two chute frames 72 are connected to the bottom of the frame-shaped frame 58. Chutes are provided on the chute frames 72. A part of the chute on the chute frames 72 is set as an inclined chute. The smooth rod 73 is slidably connected with the chutes of the two chute frames 72. When the two chute frames 72 move downward, the smooth rod 73 slides along the two chutes and is deflected by the inclined chute in the chute to move forward a certain distance. When the smooth rod 73 moves forward, it drives the two connecting rods 74 to move forward. When the two connecting rods 74 move forward, they drive the plurality of sealing slide rods 75 to move forward through the plurality of connecting pieces 76. The bottom edge of the ventilation groove of the ventilation window 71 is set as an inclined surface. The top edge of the sealing slide rod 75 is set as an inclined surface. The inclined surfaces of the sealing slide rod 75 and the ventilation groove are in sliding contact. The sliding connection part of the sealing slide rod 75 and the ventilation groove is inclined. The two connecting rods 74 are located in front of the ventilation window 71. The plurality of sealing slide rods 75 are all located at the rear side of the ventilation window 71. When the sealing slide rod 75 moves forward, the inclined surface at the top edge of the sealing slide rod 75 slides forward along the inclined surface at the bottom edge of the ventilation groove, so that the sealing slide rod 75 moves forward obliquely downward. Finally, the sealing slide rod 75 enters the ventilation groove to block the ventilation groove, thereby isolating the inside of the cabinet body 1 from the outside air, preventing the outside air from entering the inside of the cabinet body 1, cutting off the oxygen source, and the cabinet body 1 uses the negative pressure principle to tightly adsorb the plurality of sealing slide rods 75 on the plurality of ventilation grooves to further optimize the sealing effect; through the setting of the sealing component 7, the plurality of sealing slide rods 75 on the ventilation window 71 can automatically block the plurality of ventilation grooves, achieving the effect of isolating the outside air of the cabinet body 1, blocking the oxygen from entering the cabinet body 1, promoting the fire extinguishing process by isolating oxygen, and at the same time, it can also prevent the situation of re-ignition when the fire source goes out and contacts oxygen subsequently.

[0097] To enable the fire extinguisher 61 to work more stably, the status of the fire extinguisher 61 device can be detected through an autoencoder. The autoencoder is an unsupervised learning model used for anomaly detection. It learns the low-dimensional representation of the data, that is, compresses the data, and reconstructs it through a decoder. The model evaluates whether the data is abnormal through the reconstruction error. The autoencoder can detect potential problems of the fire extinguisher 61, such as gas leakage, insufficient pressure, sensor failure, etc.

[0098] The autoencoder includes an encoder and a decoder. The encoder compresses the input data into a lower-dimensional representation, and the decoder reconstructs the original data based on the low-dimensional representation. The autoencoder learns the normal pattern of the data by minimizing the reconstruction error.

[0099] When the status of the fire extinguisher 61 deviates significantly from the normal status in the training data, the reconstruction error of the autoencoder will increase significantly. According to the reconstruction error, the autoencoder can detect the abnormal condition of the fire extinguisher 61.

[0100] In some embodiments, the controller is configured to:

[0101] Obtain the status data of the fire extinguisher 61, where the status data includes gas pressure, gas storage, temperature, battery power, sensor data;

[0102] Train the autoencoder model;

[0103] Input the status data into the trained autoencoder model to output the reconstructed data generated by the decoder through the autoencoder model, and calculate the reconstruction error;

[0104] If the reconstruction error is greater than or equal to the error threshold, generate a warning instruction, where the warning instruction is used to indicate that the status of the fire extinguisher 61 is abnormal.

[0105] For abnormal status, if the gas storage of the fire extinguisher 61 drops by more than a preset range and the reconstruction error of the autoencoder is greater than or equal to the error threshold, the fire extinguisher 61 may have a leak. If the internal pressure of the device is lower than the normal range, the decoder cannot correctly reconstruct this status, and thus a warning instruction is generated.

[0106] With the above structure, the working principle of this application is as follows: There is a circuit inside the mounting bracket 2. The main cable 51 is connected to the circuit inside the mounting bracket 2. After the connector 52 is plugged into the interface 53, the circuit inside the mounting bracket 2 is powered on. The standardized module 4 can be set as a power module, a metering module, a protection module, a control module, and a communication module. The standardized module 4 is inserted into the standardized slot 3 to achieve power-on. Users can install different standardized modules 4 according to actual usage requirements. When it is necessary to replace different standardized modules 4, after power-off, the standardized module 4 to be replaced is pulled out, and the required standardized module 4 is inserted. The operation is convenient and the replacement efficiency is high. Through the setting of multiple standardized modules 4, users can set multiple standardized modules 4 with different functions and different power connection specifications according to usage requirements. In the working conditions where the power connection panel, electric meter, and control panel need to be frequently replaced, the operation of replacing the standardized module 4 by users is relatively convenient, and the replacement efficiency is high, saving operation time. At the same time, it is also convenient for fault maintenance of different standardized modules 4.

[0107] Since there are many electronic components on the front side of the mounting bracket 2 and the front sides of multiple standardized modules 4, there are also many combustibles, so the fire starting position is usually on the front side of the mounting bracket 2. When a fire breaks out inside the cabinet 1, the fuse link 55 gradually melts and breaks. Under normal conditions, the fuse link 55 pulls up two counterweights 57 through two pull ropes 56, so that the two counterweights 57 are suspended at the highest position. After the fuse link 55 breaks, the two counterweights 57 fall. When the two counterweights 57 fall, they drive the frame-shaped frame 58 to move downward. Under normal conditions, the frame-shaped frame 58 abuts against the top surface of the outer disk 54. When the frame-shaped frame 58 moves downward, it pulls the interface 53 downward through the outer disk 54, so that the interface 53 and the connector 52 are disconnected, thereby disconnecting the main cable 51 from the external power supply; through the setting of the power-off component 5, the two counterweights 57 can automatically fall when a fire breaks out inside the cabinet 1, and the connection between the connector 52 and the interface 53 is disconnected through the cooperation of the frame-shaped frame 58 and the outer disk 54, disconnecting the main cable 51 from the external power supply, thereby playing the role of disconnecting the energy source, and at the same time minimizing the impact on the external power supply and reducing losses.

[0108] Taking one of the fire extinguishers 61 as an example, when the counterweight 57 falls, it pulls down the pressure lever 65 through the pull rod 63, causing the pressure lever 65 to swing downward with the support 64 as the center. When the pressure lever 65 swings downward, it contacts the handle switch 62 and squeezes it downward. After being squeezed, the handle switch 62 activates the fire extinguisher 61, causing the two fire extinguishers 61 to spray the fire extinguishing agent simultaneously. The fire extinguishing agent covers the front side of the mounting frame 2 and the inner wall of the cabinet body 1, thereby extinguishing the fire source; at the same time as the counterweight 57 falls, it drives the sliding shaft 66 to move downward. The serrated groove frame 69 and the mounting plate 68 form an integral body. The multiple elastic pieces 67 have a certain elastic effect. When the sliding shaft 66 moves downward, it slides along the serrated chute of the serrated groove frame 69, causing the serrated groove frame 69 to continuously move backward under the reaction force of the sliding shaft 66 and then rebound forward through the elastic force of a group of elastic pieces 67. When the mounting plate 68 rebounds forward, it drives the multiple contact balls 610 to move forward, causing the multiple contact balls 610 to impact the fire extinguisher 61. When the two fire extinguishers 61 are activated, the two groups of contact balls 610 respectively impact the two fire extinguishers 61 multiple times, causing the two fire extinguishers 61 to vibrate with a certain amplitude, achieving the effect of slight shaking, thereby shaking the fire extinguishing agent inside them evenly, ensuring the use effect. The fire extinguishers 61 are set separately and are not connected to other structures under normal conditions, facilitating regular replacement; through the setting of the fire extinguishing component 6, after a fire breaks out in the cabinet body 1, the two fire extinguishers 61 can automatically spray the fire extinguishing agent to extinguish the fire source in a timely manner and prevent the fire from spreading; through the setting of the two groups of contact balls 610, the two groups of contact balls 610 can respectively knock the two fire extinguishers 61 multiple times, causing the fire extinguishers 61 to vibrate, thereby vibrating the fire extinguishing agent inside them evenly, avoiding the phenomenon that some of the fire extinguishing agent settles and cakes after being static for a long time, thus affecting the use effect.

[0109] The ventilation window 71 and the multiple ventilation slots above it play a ventilation role, which is convenient for heat dissipation in the cabinet 1. Under normal circumstances, the multiple sealing slide bars 75 are respectively located above the rear sides of the multiple ventilation slots, and do not affect the ventilation area of the ventilation slots. When the frame frame 58 moves down, the frame frame 58 drives the two slide slot frames 72 to move down. One part of the slide slot on the slide slot frame 72 is set as an inclined slot. Therefore, when the two slide slot frames 72 move down, the light rod 73 is moved forward a certain distance when it slides along the two slide slots. When the light rod 73 moves forward, it drives the two connecting rods 74 to move forward. When the two connecting rods 74 move forward, they drive the multiple sealing slide bars 75 to move forward through the multiple connecting pieces 76. The inclination angle set at the sliding connection between the sealing slide bar 75 and the ventilation slot is the same as the angle of the inclined surface of the sealing slide bar 75. Therefore, when the sealing slide bar 75 moves forward, the inclined surface of the top edge of the sealing slide bar 75 follows the bottom edge of the ventilation slot. The inclined surface slides forward, causing the sealing slide bar 75 to move forward and obliquely downward. Finally, the sealing slide bar 75 enters the ventilation slot and blocks the ventilation slot, thereby isolating the interior of the cabinet 1 from the outside air, preventing the outside air from entering the interior of the cabinet 1 and cutting off the oxygen source. The maximum height of the sealing slide bar 75 is higher than the height of the actual ventilation area of the ventilation slot, and the sealing slide bar 75 is located on the rear side of the ventilation slot. Therefore, when the air pressure in the cabinet 1 is lower than that of the outside air, the cabinet 1 uses the negative pressure principle to tightly adsorb multiple sealing slide bars 75 on multiple ventilation slots, further optimizing the sealing effect; through the setting of the sealing component 7, the multiple sealing slide bars 75 on the ventilation window 71 can automatically block multiple ventilation slots, thereby isolating the outside air of the cabinet 1 and blocking the oxygen from entering the cabinet 1. The fire extinguishing process is promoted by isolating oxygen, and it can also prevent the fire from re-igniting when it subsequently contacts oxygen after the fire source is extinguished.

[0110] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A power distribution device, characterized in that, Comprising: A cabinet body (1), inside which an installation rack (2) is installed; A power-off component (5), which is arranged on the installation rack (2), electrically connected to an external power supply, and is used for cutting off the power supply to the external power supply when a fire breaks out inside the cabinet body (1); A fire extinguishing component (6), which is arranged on the installation rack (2) and is used for extinguishing a fire when a fire breaks out inside the cabinet body (1); The power-off component (5) includes: a main cable (51) and two counterweight blocks (57). The main cable (51) is connected to the rear side of the installation rack (2) and is connected to the circuit inside the installation rack (2). One end of the main cable (51) far from the installation rack (2) is connected with a connector (52), and the external power supply is electrically connected to an interface (53); The two counterweight blocks (57) are respectively slidably connected to both sides of the installation rack (2). An outer disc (54) is connected to the outer wall of the interface (53), and a frame-shaped rack (58) is connected between the counterweight blocks (57); The fire extinguishing component (6) includes: a fire extinguisher (61), a support (64), a pressure lever (65), a spring piece (67) and a touch ball (610). The fire extinguisher (61) is installed on both sides of the installation rack (2) through a hoop, and the fire extinguisher (61) is provided with a pressure handle switch (62); the support (64) is arranged on both sides of the installation rack (2), the pressure lever (65) is rotatably connected to the support (64), and the pressure lever (65) is configured to: rotate and squeeze the pressure handle switch (62) to make the fire extinguisher (61) spray out fire extinguishing agent; the touch ball (610) is arranged on one side of the fire extinguisher (61), and the touch ball (610) is configured to: be able to hit the fire extinguisher (61) when being stressed; the spring piece (67) is arranged on both sides of the installation rack (2), and the spring piece (67) is configured to: generate an elastic force to make the touch ball (610) hit the fire extinguisher (61); The counterweight block (57) is configured to: fall when a fire breaks out inside the cabinet body (1), drive the pressure lever (65) to rotate and squeeze the pressure handle switch (62) when falling, and at the same time, drive the spring piece (67) to generate an elastic force, so that during the process of the fire extinguisher (61) spraying out fire extinguishing agent, the touch ball (610) hits the fire extinguisher under the elastic force of the spring piece (67); It further includes: a controller, a load sensor and a driving device. The load sensor includes a current sensor, a voltage sensor and a temperature sensor. The driving device is configured to adjust the triggering pressure of the counterweight block (57) by adjusting the position of the counterweight block (57); the controller is configured to: Obtain the detection data of the load sensor, and the detection data includes current data, voltage data and temperature data; If the detection data is greater than a preset value, send an instruction to the driving device to make the driving device increase the triggering pressure of the counterweight block (57); If the detected data is less than or equal to a preset value, an instruction is sent to the driving device to cause the driving device to reduce the triggering pressure of the counterweight block (57).

2. The power distribution equipment according to claim 1, wherein, A pulling rope (56) is connected to the top of each counterweight block (57), and a fuse piece (55) is connected between the pulling ropes (56) connected to the two counterweight blocks (57). The fuse piece (55) is located on the front side of the mounting bracket (2); A plurality of guide rods (59) are arranged on the mounting bracket (2), and the pulling rope (56) slides in the guide rods (59). The guide rods (59) are used to guide the sliding direction of the pulling rope (56).

3. A power distribution device according to claim 1, characterized in that, Supports (64) are respectively connected to both sides of the mounting bracket (2), and a pull rod (63) is hinged to the top of the counterweight block (57).

4. A power distribution device according to claim 3, characterized in that, One end of the pull rod (63) away from the counterweight block (57) is respectively hinged to one end of the pressure rod (65) away from the support (64). A pressure handle switch (62) is arranged on the top of the fire extinguisher (61), and the pressure rods (65) are respectively located above the pressure handle switch (62); Wherein, when the pressure rod (65) rotates, the pressure rod (65) abuts against the pressure handle switch (62).

5. A power distribution device according to claim 4, characterized in that, Elastic pieces (67) are respectively connected to both sides of the mounting bracket (2). There are a plurality of elastic pieces (67). Mounting plates (68) are respectively connected to the elastic pieces (67). The mounting plates (68) are located between the fire extinguisher (61) and the counterweight block (57). A plurality of contact balls (610) are connected to the side of the mounting plate (68) close to the fire extinguisher (61). A serrated groove frame (69) is connected to the side of the mounting plate (68) close to the counterweight block (57). A sliding shaft (66) is connected to the counterweight block (57).

6. A power distribution device according to claim 5, characterized in that, A serrated chute is arranged on the serrated groove frame (69), and the sliding shaft (66) is slidably connected to the serrated chute of the serrated groove frame (69); Wherein, when the pressure rod (65) rotates, the contact ball (610) abuts against the fire extinguisher (61).

7. A power distribution device according to claim 6, characterized in that, The power distribution equipment further includes: A sealing assembly (7), which is arranged on the shell of the cabinet body (1) and inside the cabinet body (1). The sealing assembly (7) is used to isolate the outside air from entering the cabinet body (1) when a fire breaks out inside the cabinet body (1); The sealing assembly (7) includes: A ventilation window (71), which is installed on the rear side of the cabinet body (1). A plurality of ventilation grooves are arranged on the ventilation window (71), and sealing sliding rods (75) are respectively slidably connected in the ventilation grooves.

8. A power distribution device according to claim 7, characterized in that, The sealing assembly (7) further includes: A polished rod (73), both ends of the polished rod (73) are respectively connected with connecting rods (74), the rear sides of the connecting rods (74) are connected with a plurality of connecting pieces (76), the connecting pieces (76) are respectively connected with both ends of a plurality of sealing sliding rods (75), the bottom of the frame-shaped frame (58) is connected with a sliding groove frame (72), a sliding groove is arranged on the sliding groove frame (72), and the polished rod (73) is slidably connected with the sliding groove of the sliding groove frame (72).

9. A power distribution device according to claim 8, characterized in that, The bottom edge of the ventilation slot of the ventilation window (71) is set as an inclined surface, the top edge of the sealing sliding rod (75) is set as an inclined surface, the inclined surface of the sealing sliding rod (75) is slidably connected with the inclined surface of the ventilation slot, the connecting rod (74) is located in front of the ventilation window (71), and the sealing sliding rod (75) is located behind the ventilation window (71).

10. A power distribution device according to claim 5, characterized in that, Further comprising: A release assembly; The release assembly includes: a motor, a spring and a release groove, the spring is slidably connected with the release groove, one end of the spring is connected with a counterweight (57) through the release groove, and the motor is used for pushing the spring to slide in the release groove; The serrated groove frame (69) includes: a serrated groove frame body, a sliding groove frame, a tooth shape adjusting device and a driver, the sliding groove frame is slidably connected with the serrated groove frame body, and the driver is used for driving the tooth shape adjusting device to adjust the pitch of the tooth shape; The controller is configured to: If the detection data exceeds a preset detection range, send instructions to the driver and the motor to control the driver to drive the tooth shape adjusting device and control the motor to drive the spring.

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