Power distribution cabinet and power distribution system

Abstract

The application discloses a power distribution cabinet and a power distribution system, wherein the power distribution cabinet comprises a cabinet body and at least two ventilation mechanisms, the cabinet body comprises a first ventilation opening, a second ventilation opening and an inner space, and the inner space is communicated with the outer space of the cabinet body through the first ventilation opening and the second ventilation opening; the first ventilation opening is formed in the first side wall of the cabinet body, the second ventilation opening is formed in the second side wall of the cabinet body, the first side wall and the second side wall are arranged on opposite sides of the inner space, and the first ventilation opening and the second ventilation opening are arranged staggeredly along the height direction of the cabinet body; the ventilation mechanism comprises a connecting shell and a ventilation assembly, the connecting shell comprises a mounting inner cavity, an air inlet and an air outlet; at least one ventilation mechanism is mounted on the first side wall and the second side wall, when the ventilation mechanism is mounted on the first side wall, the connecting shell is connected with the first side wall, and the air outlet is communicated with the first ventilation opening; when the ventilation mechanism is mounted on the second side wall, the connecting shell is connected with the second side wall, and the air inlet is communicated with the second ventilation opening.

Description

Technical Field

[0001] This invention relates to the field of power distribution equipment technology, and more particularly to a power distribution cabinet and a power distribution system. Background Technology

[0002] A distribution cabinet is a widely used power supply unit in daily life. It generates a lot of heat during operation. Generally, in order to improve the waterproof performance of the distribution cabinet, a sealed cabinet is used. In this way, although the distribution cabinet has good waterproof performance, the heat generated by its operation cannot be dissipated. The heat accumulates inside the cabinet. If the cabinet is not cooled down effectively in time, at best, the circuit breaker of the distribution cabinet will trip, resulting in a power outage. At worst, the distribution cabinet will catch fire and cause a safety accident. Summary of the Invention

[0003] In view of this, this application provides a power distribution cabinet and a power distribution system, wherein the power distribution system includes the power distribution cabinet, and the above-mentioned technical problems are solved by improving the structural features of the power distribution cabinet.

[0004] The first aspect of this application provides a power distribution cabinet, which includes a cabinet body and at least two ventilation mechanisms. The cabinet body includes a first ventilation opening, a second ventilation opening, and an internal space. The internal space is connected to the external space of the cabinet body through the first ventilation opening and the second ventilation opening. The first ventilation opening is formed on a first side wall of the cabinet body, and the second ventilation opening is formed on a second side wall of the cabinet body. The first side wall and the second side wall are located on opposite sides of the internal space of the cabinet body. Along the height direction of the cabinet body, the first ventilation opening and the second ventilation opening are staggered.

[0005] The ventilation mechanism includes a connecting housing and a ventilation component. The connecting housing includes a mounting cavity, an air inlet, and an air outlet. The air inlet and air outlet are located on opposite sides of the mounting cavity. The ventilation component is connected to the cavity wall of the mounting cavity, and the air outlet communicates with the internal space of the cabinet.

[0006] At least one ventilation mechanism is installed on both the first and second side walls. When the ventilation mechanism is installed on the first side wall, the connecting housing is connected to the first side wall, and the airflow outlet is connected to the first ventilation port. When the ventilation mechanism is installed on the second side wall, the connecting housing is connected to the second side wall, and the airflow inlet is connected to the second ventilation port.

[0007] In this application, the first sidewall and the second sidewall are located on opposite sides of the cabinet interior space. A first vent is formed on the first sidewall, and a second vent is located on the second sidewall. Therefore, the first vent and the second vent are located on opposite sides of the cabinet interior space. Furthermore, since the airflow outlet of the ventilation mechanism installed on the first sidewall is connected to the first vent, and the airflow inlet of the ventilation mechanism installed on the second sidewall is connected to the second vent, when the ventilation mechanism is operating normally, it can be referenced... Figure 2As shown in the diagram, air from outside the cabinet enters the cabinet space through the first vent, then moves into the cabinet space via the airflow inlet and outlet of the ventilation mechanism installed on the second side wall. Afterward, it moves back to the outside space through the first vent again via the airflow inlet and outlet of the ventilation mechanism installed on the first side wall. Furthermore, because the first and second vents are staggered along the height of the distribution cabinet, compared to embodiments where the first and second vents are at the same height, the path length of the air entering and exiting the distribution cabinet in this application is significantly longer than the gas path length in the aforementioned embodiments. Therefore, in this application, the outside air can carry more heat from inside the cabinet to the outside, thereby improving the heat dissipation capacity of the distribution cabinet in this application.

[0008] The second aspect of this application provides a power distribution system, which includes the power distribution cabinet mentioned in the first aspect of this application.

[0009] It is understandable that the beneficial effects of the second aspect mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here.

[0010] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, embodiments of this application are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a structural diagram of a power distribution system according to this application;

[0013] Figure 2 for Figure 1 A structural diagram of a type of power distribution cabinet;

[0014] Figure 3 for Figure 1 A partial structural diagram of the first sidewall;

[0015] Figure 4 This diagram illustrates a portion of the ventilation system's structure and the connections between some of its related structures.

[0016] Figure 5 This is a structural diagram of a ventilation assembly;

[0017] Figure 6This diagram illustrates the connection of the ventilation mechanism and some related structures when the ventilation components are in the third position.

[0018] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0019] Figure 8 This diagram illustrates the connection of the ventilation mechanism and some related structures when the ventilation component is in the fourth position.

[0020] Figure label:

[0021] 1000 - Power distribution system; 1 - Power distribution cabinet; 10 - Cabinet body; 11 - First ventilation opening; 12 - Second ventilation opening; 13 - Cabinet interior space; 14 - First side wall; 15 - Second side wall; 20 - Ventilation mechanism; 21 - Connecting housing; 210 - Mounting cavity; 2100 - First space; 2101 - Second space; 211 - Airflow inlet; 212 - Airflow outlet; 213 - Connecting part; 214 - Waterproof sealing strip; 22 - Ventilation assembly; 220 - Positioning groove; 221 - Guide part; 222 - Press-fit wedge surface; 23 - Guide rail; 230 - Sliding channel; 231 - First sliding section; 232 - Second sliding section; 233 - Third sliding section 30-First limiting mechanism, 31-First limiting component, 310-First elastic element, 311-First limiting element, 3110-Inclined transition surface, 312-First limiting space, 40-Second limiting mechanism, 41-Second limiting component, 50-Filter screen, 60-Installation platform, 61-Airflow hole, 610-Locking component, 611-Locking element, 612-Telescopic component, 62-Lifting component, 620-Lifting guide rod, 621-Blocking component, 63-Installation space, 70-Position sensor, 71-Controller, 72-Circuit breaker, 73-Monitoring backend, 74-Switch, 80-Positioning component, 81-Positioning element, 82-Positioning telescopic component;

[0022] H - Height direction, L - Width direction. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0024] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains. The terms “an,” “a,” or “the,” as used herein, do not indicate a limitation of quantity, but are merely used to indicate the presence of at least one. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] In the field of power equipment, the power distribution system is an important component of the power system. It is responsible for transmitting the electricity generated by power plants or substations to various user terminals through transmission lines, and then distributing it to end users through the distribution network to meet different electricity needs, while ensuring a safe, reliable and efficient power supply.

[0027] In power distribution systems, distribution cabinets are widely used power supply units in daily life. They generate a lot of heat during operation. Generally, in order to improve the waterproof performance of distribution cabinets, they are usually sealed. In this way, although the distribution cabinet has good waterproof performance, the heat generated by its operation cannot be dissipated. The heat accumulates inside the cabinet. If the cabinet is not cooled down effectively in time, at best, the circuit breaker of the distribution cabinet will trip, resulting in a power outage. At worst, the distribution cabinet may catch fire and cause a safety accident.

[0028] This application aims to solve the above-mentioned problems by improving the structural features of the distribution cabinet in the power distribution system, so that the distribution cabinet can still have heat dissipation capacity under water immersion, thereby improving the heat dissipation performance of the distribution cabinet.

[0029] The following will refer to the appendices in the embodiments of this application. Figure 1 To be continued Figure 8 The technical solutions in the embodiments of this application are described clearly and completely.

[0030] First, please refer to Figure 1 ,Depend on Figure 1 As can be seen, the power distribution system 1000 includes distribution cabinet 1. Please refer to [further details]. Figure 2The distribution cabinet 1 includes a cabinet body 10 and at least two ventilation mechanisms 20. The cabinet body 10 includes a first ventilation opening 11, a second ventilation opening 12, and an internal space 13. The internal space 13 is connected to the external space of the cabinet body 10 through the first ventilation opening 11 and the second ventilation opening 12. The first ventilation opening 11 is formed on the first side wall 14 of the cabinet body 10, and the second ventilation opening 12 is formed on the second side wall 15 of the cabinet body 10. The first side wall 14 and the second side wall 15 are located on opposite sides of the internal space 13, along the height direction H of the cabinet body 10. The first ventilation opening 11 and the second ventilation opening 12 are staggered. The ventilation mechanism 20 includes a connecting shell 21 and a ventilation component 22. The connecting housing 21 includes an inner cavity 210, an air inlet 211, and an air outlet 212. The air inlet 211 and the air outlet 212 are located on opposite sides of the inner cavity 210. The ventilation assembly 22 is connected to the cavity wall of the inner cavity 210, and the air outlet 212 is connected to the cabinet space 13. At least one ventilation mechanism 20 is installed on both the first side wall 14 and the second side wall 15. When the ventilation mechanism 20 is installed on the first side wall 14, the connecting housing 21 is connected to the first side wall 14, and the air outlet 212 is connected to the first ventilation port 11. When the ventilation mechanism 20 is installed on the second side wall 15, the connecting housing 21 is connected to the second side wall 15, and the air inlet 211 is connected to the second ventilation port 12.

[0031] Specifically, the first sidewall 14 and the second sidewall 15 are located on opposite sides of the cabinet space 13. The first ventilation opening 11 is formed on the first sidewall 14, and the second ventilation opening 12 is located on the second sidewall 15. Therefore, the first ventilation opening 11 and the second ventilation opening 12 are located on opposite sides of the cabinet space 13. Furthermore, since the airflow outlet 212 of the ventilation mechanism 20 installed on the first sidewall 14 is connected to the first ventilation opening 11, and the airflow inlet 211 of the ventilation mechanism 20 installed on the second sidewall 15 is connected to the second ventilation opening 12, when the ventilation mechanism 20 is operating normally, it can be referenced... Figure 2 As shown in the diagram, air from outside the cabinet 10 enters the cabinet space 13 through the first vent 11, then moves to the cabinet space 13 via the airflow inlet 211 and airflow outlet 212 of the ventilation mechanism 20 installed on the second side wall 15, and then moves to the external space of the cabinet 10 via the airflow inlet 211 and airflow outlet 212 of the ventilation mechanism 20 installed on the first side wall 14.

[0032] Furthermore, because the first ventilation opening 11 and the second ventilation opening 12 are staggered along the height direction H of the distribution cabinet 1, compared with the embodiment where the first ventilation opening 11 and the second ventilation opening 12 are located at the same height of the distribution cabinet 1, the path length of the air during the process of external air entering and leaving the distribution cabinet 1 in this application is significantly greater than the gas path length in the above embodiment. Therefore, in this application, the external air can carry more heat from inside the cabinet to the outside of the cabinet 10, thereby improving the heat dissipation capacity of the distribution cabinet 1 in this application.

[0033] Furthermore, when the distribution cabinet 1 encounters extreme weather conditions, especially when it is submerged in water, water may enter the cabinet space 13 through the first ventilation opening 11 and / or the second ventilation opening 12, causing damage to the internal components and reducing the heat dissipation performance of the distribution cabinet 1. In this application, the first ventilation opening 11 and the second ventilation opening 12 are staggered along the height direction H of the distribution cabinet 1, that is, there is a height difference between the first ventilation opening 11 and the second ventilation opening 12. Thus, when water enters the cabinet 10, it will flow to the bottom space of the cabinet space 13 due to its own weight. Even when water enters the cabinet space 13, the high-positioned ventilation mechanism 20 can still be protected from water immersion to a certain extent, thus maintaining its own operational performance. Even if only the high-positioned ventilation mechanism 20 is operating, it cannot form a convection effect with the low-positioned ventilation mechanism 20. However, the high-positioned ventilation mechanism 20 can still form an airflow effect with its corresponding ventilation opening. After introducing external air into the cabinet space 13, the airflow is then blown out of the cabinet space 13 by the rebound effect between the airflow and the inner wall of the cabinet 10, thereby ensuring the heat dissipation performance of the power distribution cabinet 1.

[0034] It should be noted that the aforementioned power distribution cabinet 1 is not limited to the power distribution system 1000, but can also be applied to energy storage systems, transportation systems, etc. That is, the power distribution cabinet 1 in this application can be flexibly applied to a variety of applicable scenarios.

[0035] Please refer to Figure 2 and Figure 3In some embodiments, the distribution cabinet 1 further includes a first limiting mechanism 30 and a second limiting mechanism 40. The first limiting mechanism 30 includes at least two first limiting components 31, each including a first elastic member 310 and a first limiting member 311. One end of the first elastic member 310 is positioned and connected to the first sidewall 14, and the other end is connected to the first limiting member 311. At least one first limiting component 31 is distributed on opposite sides of the first ventilation opening 11. The second limiting mechanism 40 includes at least two second limiting components 41, each including a second elastic member and a second limiting member. One end of the second elastic member is positioned and connected to the second sidewall 15, and the other end is connected to the second limiting member. At least one second limiting component 41 is distributed on opposite sides of the second ventilation opening 12.

[0036] At least one connecting part 213 is provided on each of the opposite sides of the connecting housing 21. When the ventilation mechanism 20 is installed on the first side wall 14, a first limiting member 311 limits the connection of a connecting part 213; when the ventilation mechanism 20 is installed on the second side wall 15, a second limiting member limits the connection of a connecting part 213.

[0037] The first limiting mechanism 30 and the second limiting mechanism 40 are both used to position the ventilation mechanism 20. The first limiting member 311 can move up and down under the elastic action of the first elastic member 310, and the second limiting member can move up and down under the elastic action of the second elastic member. Thus, the first limiting mechanism 30 and the second limiting mechanism 40 can adjust their own opening shape by adjusting the working state of the first limiting component 31 and the second limiting component 41, so that the connecting part 213 can better connect the first limiting member 311 or the second limiting member.

[0038] Please refer to Figure 3 In some embodiments, at least one first limiting member 311 is provided with an inclined transition surface 3110, which is formed at the end of the first limiting member 311 away from the first elastic member 310; along the width direction L of the distribution cabinet 1, the inclined transition surface 3110 extends inclinedly towards the side near the first side wall 14 and towards the bottom of the distribution cabinet 1; a first limiting space 312 is formed between the first limiting member 311 and the first side wall 14, and when the ventilation mechanism 20 is installed on the first side wall 14, the connecting part 213 is located in the first limiting space 312;

[0039] The first limiting space 312 is used to accommodate the connecting part 213. Thus, when the first limiting member 311 limits the connection of the connecting part 213, there is a certain connection area between the first limiting member 311 and the connecting part 213, thereby improving the connection effect of the first limiting mechanism 30 on the connecting shell 21.

[0040] Similarly, in some embodiments, at least one second limiting member is provided with an inclined transition surface 3110, which is formed at the end of the second limiting member away from the second elastic member; along the width direction L of the distribution cabinet 1, the inclined transition surface 3110 extends inclinedly towards the bottom of the distribution cabinet 1 from the side where the second side wall 15 is located; a second limiting space is formed between the second limiting member and the second side wall 15. When the ventilation mechanism 20 is installed on the second side wall 15, the connecting part 213 is located in the second limiting space. It should be noted that the specific structural features of the second limiting mechanism 40 can be referred to in detail with the aforementioned structural features of the first limiting member 311, and will not be described separately here.

[0041] Please refer to Figure 2 In some embodiments, the first vent 11 and the second vent 12 are distributed along the diagonal direction of the cabinet space 13. In this way, the first vent 11, the second vent 12 and the at least two ventilation mechanisms 20 installed on the first side wall 14 and the second side wall 15 can form a longer airflow channel, thereby enabling the outside air to carry more heat from inside the cabinet to the outside of the cabinet 10, so as to improve the heat dissipation capacity of the power distribution cabinet 1.

[0042] Furthermore, in some embodiments, along the height direction H of the distribution cabinet 1, the first ventilation opening 11 is higher than the second ventilation opening 12. That is, it can be understood that in the airflow channel formed by the first ventilation opening 11, the second ventilation opening 12 and at least two ventilation mechanisms 20 installed on the first side wall 14 and the second side wall 15, the air inlet is lower than the air outlet.

[0043] First, it is important to understand that when outside air first enters the cabinet space 13, its temperature is lower than the temperature of the gas inside the cabinet space 13. After the outside air enters the cabinet space 13 through the second vent 12 (corresponding to the air inlet mentioned above) and is then discharged through the first vent 11 (corresponding to the air outlet mentioned above), the temperature of this portion of outside air increases due to carrying heat from the cabinet space 13. As the gas temperature rises, its density decreases, and the high-temperature gas floats above the low-temperature gas. Thus, the setting of the first vent 11 being higher than the second vent 12 is beneficial for the distribution cabinet 1 to introduce low-temperature outside air into the cabinet space 13. Since the temperature difference between the low-temperature outside air and the high-temperature gas inside the cabinet space 13 is large, the low-temperature outside air can carry more heat to the outside of the cabinet. Therefore, the setting of the first vent 11 being higher than the second vent 12 is beneficial for improving the heat dissipation performance of the distribution cabinet 1.

[0044] Please refer to Figure 2 , Figure 4 , Figure 6 and Figure 8In some embodiments, the power distribution cabinet 1 also includes a filter 50, which covers and connects the first ventilation opening 11 and / or the second ventilation opening 12. In this way, when the power distribution cabinet 1 is in operation, the filter 50 can filter impurities carried in the gas to prevent external air from entering the cabinet space 13 and polluting the environment of the cabinet space 13, causing the devices in the cabinet space 13 to malfunction. At the same time, the filter 50 can also prevent small animals from crawling into the cabinet space and damaging the wiring and devices inside the cabinet when the power distribution cabinet is used on the ground.

[0045] In addition, when the distribution cabinet 1 is in a high water level environment (such as flood, water accumulation, etc.), once water flows into the cabinet space 13 from the first vent 11 and / or the second vent 12, the filter screen 50 can filter at least most of the impurities (such as mud, sand, branches, wires, etc.) carried in the water, intercepting the impurities outside the cabinet 10, thereby preventing impurities from entering and contaminating the cabinet space 10 and increasing the difficulty of later maintenance of the distribution cabinet 1.

[0046] Please refer to this as well. Figure 4 , Figure 6 and Figure 8 In some embodiments, the ventilation mechanism 20 further includes a mounting platform 60, which is connected to the cavity wall of the mounting cavity 210 and divides the mounting cavity 210 into a first space 2100 and a second space 2101. The first space 2100 and the first vent 11 or the second vent 12 are located on opposite sides of the mounting platform 60, and the ventilation component 22 is located in the first space 2100. The mounting platform 60 has an airflow hole 61 through which the first space 2100 can connect to the second space 2101. The mounting platform 60 also includes a lifting component 62, which further includes a lifting mechanism. The lifting guide rod 620 and the sealing element 621 are connected to the mounting platform 60. The lifting guide rod 620 is connected to the end of the lifting guide rod 620 away from the mounting platform 60. The lifting guide rod 620 has a first position and a second position relative to the mounting platform 60. When the lifting guide rod 620 is in the first position, the sealing element 621 is away from the mounting platform 60, and the first space 2100 is connected to the second space 2101. When the lifting guide rod 620 is in the second position, the sealing element 621 blocks the air passage 61. The first space 2100 and the second space 2101 are independent of each other on opposite sides of the mounting platform 60.

[0047] The installation platform 60 provides the mounting surface for the ventilation component 22 and divides the mounting cavity 210 into a first space 2100 and a second space 2101, thereby isolating the space where water can enter from the space where the ventilation component 22 is located. The lifting component 62 adaptively adjusts the connection between the first space 2100 and the second space 2101 according to the water level in the second space 2101, so as to avoid the water level rising too high and causing water to soak and damage the ventilation component 22.

[0048] It should also be noted that the lifting guide rod 620 is used to guide the lifting and lowering movement of the sealing component 621. Thus, the sealing component 621 can move along the direction of the lifting guide rod 620 and will not be unable to seal the air passage 61 due to floating on the water surface, thus affecting the performance and service life of the ventilation mechanism 20.

[0049] Please return to the reference. Figure 1 and in conjunction with references Figure 4 , Figure 6 and Figure 8 In some embodiments, the power distribution cabinet 1 further includes a position sensor 70 and a controller 71. At least one position sensor 70 is connected to the first side wall 14. The position sensor 70 is used to collect position information of the sealing component 621. The controller 71 is electrically connected to the ventilation assembly 22. The controller 71 generates a control signal to control the operation of the ventilation assembly 22 based on the position information collected by the position sensor 70.

[0050] Specifically, the position sensor 70 is used to sense the position of the sealing component 621 and generate a corresponding position signal. After receiving the position signal, the controller 71 will generate a corresponding control signal to control the operation of the ventilation component 22, so as to control the operating parameters of the ventilation component 22. In this way, the ventilation component 22 can make adaptive adjustments according to the operation of the power distribution cabinet 1. When the sealing component 621 blocks the air passage 61, making the first space 2100 and the second space 2101 independent of each other, if the ventilation component 22 is still in operation at this time, the airflow formed by the ventilation component 22 can only rely on the gas in the first space 2100 and cannot introduce the gas through the second space 2101 into the first space 2100. Therefore, the operation of the ventilation component 22 can be stopped at this time to reduce the energy consumption of the power distribution cabinet 1. In addition, because the sealing component 621 blocks the air passage 61, it proves that the water in the cabinet space 13 has accumulated to a high water level, and avoids adverse operating conditions such as short circuits in the power distribution cabinet 1.

[0051] Further, please refer to Figure 1In some embodiments, the power distribution cabinet 1 further includes a circuit breaker 72 and a controller 71, and the power distribution system 1000 further includes a monitoring backend 73 and a switch 74. The position sensor 70 is electrically connected to the controller 71, and the controller 71 is electrically connected to the switch 74, the circuit breaker 72, and the ventilation component 22. The switch 74 is also electrically connected to the monitoring backend 73. Specifically, when the water level in the cabinet space 13 rises, the sealing component 621 rises under the buoyancy of the water. When the sealing component 621 floats to a certain height, the displacement sensor can collect the position information of the sealing component 621 and generate a position information signal of the sealing component 621. The controller 71 receives the position information signal and outputs a control signal based on the position information signal to control the operating parameters of the switch 74, the circuit breaker 72, and the ventilation component 22.

[0052] In one feasible operation mode, the displacement sensor has multiple sensing points spaced apart along the height direction H of the distribution cabinet 1. The controller 71 can send control signals to the shunt coil of the circuit breaker 72, causing the circuit breaker 72 to trip, reducing the load connected to the distribution cabinet 1, thereby reducing the heat generation of the distribution cabinet 1. At the same time, relevant information is sent to the switch 74 and fed back to the monitoring background 73. For example, when the lifting guide rod 620 is raised to the second position, the sealing member 621 blocks the air passage 61. Figure 6 and Figure 7 The locking component 611 can lock the sealing component 621, thereby preventing water from flowing into the first space 2100 through the air passage 61. At this time, the controller 71 can send a corresponding control signal to the circuit breaker 72 based on the position information signal sent by the displacement sensor, so that the circuit breaker 72 can be tripped. The controller 71 can also send a circuit breaker signal to disconnect the ventilation component 22 and other electrical components from the power supply, so that the distribution cabinet 1 stops working.

[0053] Similarly, when the water level drops, once the water level reaches a safe level, the sealing component 621 can be removed from the air passage 61 by manual, mechanical, or intelligent control methods to restore the connectivity between the first space 2100 and the second space 2101. At the same time, once the power distribution cabinet 1 is restored to power, the controller 71 controls the circuit breaker 72, ventilation component 22, and switch 74 to operate by receiving the position information signal sent by the displacement sensor. The monitoring background 73 can then obtain the operating status of each component.

[0054] In some embodiments, the locking component 610 is as follows: Figure 7 The purely physical structure shown allows for manual operation when the water level drops. The locking member 611 can be manually operated to squeeze the telescopic member 612, thereby releasing the locking member 611 from the sealing member 621. As a result, the sealing member 621 can leave the air passage 61 and rise or fall accordingly according to the water level.

[0055] Please refer to Figure 4 and Figure 5 In some embodiments, the ventilation mechanism 20 further includes a positioning component 80 located in the first space 2100, the positioning component 80 including a positioning member 81 and a positioning telescopic member 82; the mounting platform 60 includes a mounting space 63, one end of the positioning telescopic member 82 is positioned and connected to the inner wall of the mounting space 63, and the other end is connected to the positioning member 81; the ventilation component 22 is provided with a positioning groove 220; the ventilation component 22 has a third position and a fourth position relative to the mounting platform 60, when the ventilation component 22 is in the third position (see reference...). Figure 6 The positioning groove 220 positions and connects to the positioning member 81; when the ventilation assembly 22 is in the fourth position, the positioning member 81 leaves the positioning groove 220.

[0056] Specifically, the positioning component 80 is used to position the ventilation component 22. Through the connection between the positioning member 81 and the positioning groove 220, the ventilation component 22 can be positioned in the first space 2100. Thus, during the operation of the power distribution cabinet 1, the ventilation component 22 can always be located in a fixed position in the first space 2100. Because the positioning member 81 is connected to the positioning telescopic member 82, the positioning member 81 can extend or enter into the installation space 63, thereby adjusting the size of the positioning member 81 exposed on the surface of the installation platform 60. Thus, when the ventilation component 22 is positioned and installed in the first space 2100, during the process of the ventilation component 22 sliding along the installation platform 60, and during the process of the ventilation component 22 moving from the fourth position to the third position, the positioning member 81 can be partially or completely hidden in the installation space 63. The top of the positioning member 81 can slide along the surface of the ventilation component 22. When the ventilation component 22 moves to the third position, the positioning member 81 connects to the positioning groove 220 so that the ventilation component 22 is positioned in the third position.

[0057] Please refer to Figure 4 , Figure 5 , Figure 6 and Figure 8 In some embodiments, the positioning member 81 is a wedge-shaped member, and the positioning end of the positioning member 81 is inclined upward along the width direction L of the distribution cabinet 1. The ventilation mechanism 20 also includes a guide rail 23, which is fixedly located in the first space 2100 and fixedly connected to the mounting platform 60. The outer surface of the ventilation component 22 is provided with a guide portion 221, which is slidably connected to the guide rail 23. The guide portion 221 has a fifth position and a sixth position relative to the guide rail 23. When the guide portion 221 is in the fifth position, the positioning groove 220 positions and connects to the positioning member 81. When the guide portion 221 is in the sixth position, the positioning member 81 leaves the positioning groove 220.

[0058] It should be understood that the guide rail 23 is used to guide the movement of the ventilation assembly 22, so that the ventilation assembly 22 can move more easily from the fourth position to the third position, increasing the guidance for the user when installing the ventilation assembly 22 and enabling the user to install the ventilation assembly 22 to the designated position more quickly. It should be noted that when the guide part 221 is in the fifth position, the ventilation assembly 22 is in the third position; when the guide part 221 is in the sixth position, the ventilation assembly 22 is in the fourth position.

[0059] In addition, since the positioning member 81 is a wedge-shaped member, when the ventilation assembly 22 slides along the guide rail 23, the ventilation assembly 22 can press the inclined surface of the positioning member 81, so that the positioning member 81 presses the positioning telescopic member 82, thereby moving into the installation space 63. Thus, the positioning member 81 will not affect the pushing and moving of the ventilation assembly 22 along the width direction L of the distribution box.

[0060] Please refer to Figure 4 In some embodiments, the guide rail 23 includes a sliding channel 230, which includes a first sliding segment 231, a second sliding segment 232, and a third sliding segment 233 that are connected to each other. The first sliding segment 231 extends along the width direction L of the distribution cabinet 1, and the second sliding segment 232 extends along the height direction H of the distribution cabinet 1. On opposite sides of the third sliding segment 233, one end is connected to one end of the first sliding segment 231, and the other end is connected to one end of the second sliding segment 232.

[0061] The first sliding section 231 is used to guide the ventilation component 22 to move inward along the width direction L of the distribution box, the second sliding section 232 is used to guide the ventilation component 22 to move along the height direction H of the distribution box, and the third sliding section 233 is used to guide the ventilation component 22 to move outward along the width direction L of the distribution box after being raised, and to enable the ventilation component 22 of the distribution box to gradually descend to the surface of the mounting platform 60 in the height direction H.

[0062] Thus, during the process of moving the ventilation component 22 in and out, the ventilation component 22 can be moved smoothly and safely to the target position through the cooperation between the guide part 221 and the guide rail 23.

[0063] In some embodiments, the guide portion 221 is a roller, thereby reducing the friction between the guide portion 221 and the guide rail 23.

[0064] In some embodiments, the ventilation assembly 22 is provided with a pressing wedge surface 222, which is used to cooperate with the positioning member 81 to reduce the interference between the end of the ventilation assembly 22 and the positioning member 81 when the ventilation assembly 22 moves along the first sliding section 231.

[0065] In some embodiments, a waterproof strip 214 is connected to the outer periphery of the ventilation mechanism 20. The waterproof strip 214 covers the housing connection of the connecting housing 21 to further enhance the waterproof effect of the connecting housing 21 and prevent water from entering the installation cavity 210 along the connection of the connecting housing 21, thus affecting the service life of the ventilation assembly 22.

[0066] It should be noted that the descriptions of each embodiment in the above embodiments have different emphases. Parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0067] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A power distribution cabinet, characterized in that, include: A cabinet, comprising a first ventilation opening, a second ventilation opening, and an internal space, wherein the internal space is connected to an external space of the cabinet via the first and second ventilation openings; the first ventilation opening is formed on a first side wall of the cabinet, and the second ventilation opening is formed on a second side wall of the cabinet, the first and second side walls being located on opposite sides of the internal space, and the first and second ventilation openings being staggered along the height of the cabinet; and At least two ventilation mechanisms, each ventilation mechanism including a connecting housing and a ventilation assembly, the connecting housing including a mounting cavity, an airflow inlet and an airflow outlet, the airflow inlet and the airflow outlet being located on opposite sides of the mounting cavity, the ventilation assembly being connected to the cavity wall of the mounting cavity, and the airflow outlet communicating with the cabinet interior space; At least one ventilation mechanism is installed on both the first sidewall and the second sidewall. In the ventilation mechanism installed on the first sidewall, the connecting housing of the ventilation mechanism is connected to the first sidewall, and the airflow outlet of the ventilation mechanism is connected to the first vent. In the ventilation mechanism installed on the second sidewall, the connecting housing of the ventilation mechanism is connected to the second sidewall, and the airflow outlet of the ventilation mechanism is connected to the second vent. The ventilation mechanism further includes an installation platform, which is connected to the cavity wall of the installation cavity and divides the installation cavity into a first space and a second space. The first space and the first vent or the second vent are located on opposite sides of the installation platform, and the ventilation component is located in the first space. The installation platform is provided with an air passage, through which the first space can connect to the second space; the installation platform also includes a lifting assembly, which further includes a lifting guide rod and a sealing component, the lifting guide rod being elliptical and vertically connected to the installation platform, and the sealing component being connected to the end of the lifting guide rod away from the installation platform; The lifting guide rod has a first position and a second position relative to the mounting platform. In the first position, the sealing member is away from the mounting platform, and the first space is connected to the second space. In the second position, the sealing member blocks the air passage, and the first space and the second space are independent of each other on opposite sides of the mounting platform. The ventilation mechanism further includes a positioning component located in the first space, the positioning component including a positioning element and a telescopic element; The installation platform includes an installation space. One end of the telescopic member is positioned and connected to the inner wall of the installation space, and the other end is connected to the positioning member. The ventilation component is provided with a positioning groove. The ventilation component has a third position and a fourth position relative to the installation platform. When the ventilation component is in the third position, the positioning member protrudes from the surface of the installation platform, and the positioning groove is positioned and connected to the positioning member. In the fourth position, the positioning member leaves the positioning groove. The positioning element is a wedge-shaped element, and along the width direction of the distribution cabinet, the positioning end of the positioning element is inclined upward in the direction away from the airflow outlet; The ventilation mechanism further includes a guide rail, which is fixedly located in the first space and fixedly connected to the mounting platform; the outer surface of the ventilation component is provided with a guide portion, which is slidably connected to the guide rail, and the guide portion has a fifth position and a sixth position relative to the guide rail. At the fifth position, the positioning groove is positioned and connected to the positioning member; at the sixth position, the positioning member is removed from the positioning groove. The guide rail includes a sliding channel, which includes a first sliding section, a second sliding section, and a third sliding section that are connected to each other. The first sliding section extends along the width direction of the distribution cabinet, and the second sliding section extends along the height direction of the distribution cabinet. On opposite sides of the third sliding section, one end of the third sliding section is connected to one end of the first sliding section, and the other end of the third sliding section is connected to one end of the second sliding section.

2. The power distribution cabinet as described in claim 1, characterized in that, The power distribution cabinet also includes: A first limiting mechanism, comprising at least two first limiting components, each first limiting component comprising a first elastic member and a first limiting member, wherein one end of the first elastic member is positioned and connected to the first sidewall, and the other end is connected to the first limiting member; at least one first limiting component is distributed on opposite sides of the first vent. The second limiting mechanism includes at least two second limiting components. Each second limiting component includes a second elastic member and a second limiting member. One end of the second elastic member is positioned and connected to the second sidewall, and the other end is connected to the second limiting member. At least one second limiting component is distributed on opposite sides of the second vent. The connecting housing has at least one connecting part on each of its opposite sides. In the ventilation mechanism installed on the first side wall, the first limiting member limits the connection of the connecting part located on the first side wall. In the ventilation mechanism installed on the second side wall, the second limiting member limits the connection of the connecting part located on the second side wall.

3. The power distribution cabinet as described in claim 2, characterized in that, At least one of the first limiting members is provided with an inclined transition surface, the inclined transition surface being formed at the end of the first limiting member away from the first elastic member; along the width direction of the distribution cabinet, the inclined transition surface extends in a direction away from the first sidewall, and along the height direction of the distribution cabinet, the distance between the inclined transition surface and the bottom of the distribution cabinet gradually decreases; A first limiting space is formed between the first limiting member and the first sidewall. In the ventilation mechanism installed on the first sidewall, the connecting portion located on the first sidewall side is located within the first limiting space; and / or At least one of the second limiting members is provided with an inclined transition surface, the inclined transition surface being formed at the end of the second limiting member away from the second elastic member; along the width direction of the distribution cabinet, the inclined transition surface extends in a direction away from the second side wall, and along the height direction of the distribution cabinet, the distance between the inclined transition surface and the bottom of the distribution cabinet gradually decreases; A second limiting space is formed between the second limiting member and the second sidewall. In the ventilation mechanism installed on the second sidewall, the connecting part located on the second sidewall side is located in the second limiting space.

4. The power distribution cabinet as described in claim 3, characterized in that, The first ventilation opening and the second ventilation opening are distributed along the diagonal direction of the space inside the cabinet; And / or, the distribution cabinet further includes a filter screen that covers the connection between the first vent and / or the second vent.

5. The power distribution cabinet as described in claim 1, characterized in that, The power distribution cabinet also includes a position sensor and a controller. At least one of the position sensors is connected to the first side wall. The position sensor is used to collect the position information of the sealing component. The controller is electrically connected to the ventilation assembly, and the controller generates a control signal to control the operation of the ventilation assembly based on the position information collected by the position sensor.

6. A power distribution system, characterized in that, Includes the power distribution cabinet as described in any one of claims 1 to 5.

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