An outdoor power distribution cabinet

Abstract

This utility model belongs to the field of electrical equipment technology, specifically referring to an outdoor power distribution cabinet; it includes a cabinet body and an inner top plate on top, and further includes: a rain cover, a detachable cover located outside the inner top plate, the rain cover and the inner top plate enclosing a heat insulation cavity, an annular gap between the bottom edge of the rain cover and the cabinet body, the annular gap allowing the heat insulation cavity to communicate with the external environment; at least one exhaust port, penetrating the inner top plate, the exhaust port connecting the interior of the cabinet to the heat insulation cavity, the annular gap, the heat insulation cavity, and the exhaust port together forming a heat dissipation channel; and a guide fin assembly, located on the side of the inner top plate facing the heat insulation cavity, the guide fin assembly including multiple guide fins, used to guide the hot air flow from the exhaust port to the annular gap. This utility model forms a heat insulation cavity through the detachable rain cover outside the inner top plate, constructs a heat dissipation channel in conjunction with the annular gap and the exhaust port, and guides the hot air flow with the guide fin assembly, improving the compatibility of protection and heat dissipation of the outdoor power distribution cabinet.

Description

Technical Field

[0001] This utility model belongs to the field of electrical equipment technology, and specifically refers to an outdoor power distribution cabinet. Background Technology

[0002] Distribution cabinets are key equipment in power systems, mainly used to centrally install electrical components such as switches and meters to realize the distribution, control, protection and monitoring of power lines. Outdoor distribution cabinets need to withstand sun and rain for a long time and must meet the requirements of protection and heat dissipation to ensure the normal operation of internal components.

[0003] The waterproof design of existing outdoor distribution cabinets often conflicts with heat dissipation requirements. For example, most existing outdoor distribution cabinets use an integrated sealed cover for rain protection. While this provides good waterproofing, the completely enclosed structure hinders natural convection of hot air inside the cabinet, resulting in low heat dissipation efficiency. Other designs add ventilation holes to the top cover, but these holes are directly exposed to the outdoors, allowing rainwater and dust to easily penetrate and affect the safety of internal components. Neither of these methods can achieve a balance between waterproofing and heat dissipation in harsh outdoor environments. Therefore, there is an urgent need for an outdoor distribution cabinet that can effectively solve the problem of heat dissipation inside the cabinet while ensuring waterproofing performance at the top. Utility Model Content

[0004] This invention forms a heat insulation cavity by using a detachable rainproof cover outside the inner top plate, and constructs a heat dissipation channel with an annular gap and exhaust port. It also uses a guide fin assembly to guide the hot airflow, achieving both waterproofing and heat dissipation, thus solving the problems mentioned in the background art.

[0005] The purpose of this utility model is achieved as follows: an outdoor power distribution cabinet includes a cabinet body and an inner top plate located at the top, and further includes: A rain cover, a detachable cover, is installed outside the inner top plate. The rain cover and the inner top plate enclose a heat insulation cavity. An annular gap is provided between the bottom edge of the rain cover and the cabinet body. The annular gap allows the heat insulation cavity to communicate with the external environment. At least one exhaust port extends through the inner top plate. The exhaust port is used to connect the interior of the cabinet with the heat insulation cavity. The annular gap, the heat insulation cavity and the exhaust port together form a heat dissipation channel. A flow guide fin assembly is disposed on the side of the inner top plate facing the heat insulation cavity. The flow guide fin assembly includes multiple flow guide fins for guiding the hot air flow from the exhaust port to the annular gap.

[0006] The present invention is further configured such that the top of the rain cover has a conical structure.

[0007] The present invention is further configured such that the inner top plate is a conical structure adapted to the conical structure at the top of the rain cover.

[0008] The present invention is further provided that the exhaust port is provided with a removable filter plate.

[0009] The present invention is further configured such that the rain cover is detachably fixed to the cabinet by fastening bolts.

[0010] The present invention is further configured such that the guide fins are radially distributed with the exhaust port as the center.

[0011] The present invention is further provided that the side wall of the cabinet is provided with an air inlet that can prevent rainwater from entering.

[0012] By adopting the above technical solution, the beneficial effects that this utility model can achieve are: 1. A heat insulation cavity is formed by the detachable rain cover and the inner top plate. The heat is guided by the annular gap, exhaust port and guide fin group to achieve waterproof and heat dissipation synergy, which improves the compatibility of outdoor power distribution cabinet protection and heat dissipation.

[0013] 2. The detachable rain cover design facilitates subsequent maintenance operations such as disassembling and inspecting the insulation chamber and replacing the exhaust filter plate, thus improving the ease of maintenance for outdoor power distribution cabinets.

[0014] 3. The hot air is guided to the annular gap by the guide fin assembly, which accelerates the discharge of hot air from the cabinet. At the same time, the conical structure reduces the accumulation of rain and snow, ensures unobstructed heat dissipation channels, and improves the heat dissipation stability of the outdoor power distribution cabinet. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a utility model Figure 2 A magnified structural diagram of part A; Figure 4 This is an exploded view of the present invention.

[0016] The attached diagram is labeled as follows: 1. Cabinet; 2. Inner top plate; 3. Rain cover; 4. Insulation cavity; 5. Annular gap; 6. Exhaust port; 7. Heat dissipation channel; 8. Guide fin assembly; 80. Guide fin; 9. Filter plate; 10. Fastening bolt; 11. Air inlet. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-4 : Example 1:

[0018] This embodiment provides an outdoor power distribution cabinet, including a cabinet body 1 and an inner top plate 2 disposed on the top, and further including: Rain cover 3, a detachable cover is installed outside the inner top plate 2. The rain cover 3 and the inner top plate 2 enclose a heat insulation cavity 4. An annular gap 5 is provided between the bottom edge of the rain cover 3 and the cabinet 1. The annular gap 5 allows the heat insulation cavity 4 to communicate with the external environment. At least one exhaust port 6 penetrates the inner top plate 2. The exhaust port 6 is used to connect the interior of the cabinet 1 with the heat insulation cavity 4. The annular gap 5, the heat insulation cavity 4 and the exhaust port 6 together form a heat dissipation channel 7. A group 80 of guide fins is disposed on the side of the inner top plate 2 facing the heat insulation cavity 4. The group 80 of guide fins includes a plurality of guide fins 80 for guiding the hot air flow from the exhaust port 6 to the annular gap 5.

[0019] Cabinet 1 is the main load-bearing structure of the outdoor distribution cabinet. Its core function is to house electrical components such as switches, meters, and relays, providing them with a closed or semi-closed installation space to prevent them from being directly exposed to the outdoor environment of sunlight, rain, and dust. Its structure is a cavity with a certain volume. Its shape is usually designed as a cuboid or other adaptable shape according to the outdoor installation scenario and the layout of the internal components. It can be fixed to the ground bracket or wall bracket with bolts. The top of cabinet 1 is fixedly connected to the inner top plate 2, and the outside is detachably connected to the rain cover 3. It serves as a protective carrier for the internal components and the installation base for external components such as the inner top plate 2 and the rain cover 3. At the same time, it provides a closed space for airflow inside the cabinet to ensure that the heat dissipation process is carried out in an orderly manner.

[0020] The inner top plate 2 is a plate-shaped component fixed to the top of the cabinet 1. Its function is to separate the internal space of the cabinet 1 from the external heat insulation cavity 4, prevent the internal components of the cabinet 1 from directly contacting the heat insulation cavity 4, and provide a mounting carrier for the exhaust port 6 and the guide fin group 80. Its structure is a plate-shaped structure that is perfectly adapted to the opening size of the top of the cabinet 1, and is fixedly connected to the top edge of the cabinet 1 by welding. At least one exhaust port 6 is opened through the inner top plate 2, and the guide fin group 80 is fixedly installed on the side facing the heat insulation cavity 4. It can not only realize the airflow communication between the inside of the cabinet 1 and the heat insulation cavity 4 through the exhaust port 6, but also block the external heat from directly entering the inside of the cabinet 1 through its own plate-shaped structure, while providing a stable mounting surface for the guide fin group 80.

[0021] The rain cover 3 is a shell-shaped component used to shield the top of the inner top plate 2 and the cabinet 1. Its core function is to prevent rainwater, dust and other external pollutants from entering the insulation cavity 4 and the interior of the cabinet 1, and to protect the inner top plate 2, the exhaust port 6 and the 80 sets of guide fins from external environmental corrosion. Its structure is a shell-shaped structure that can completely cover the outside of the inner top plate 2. Its shape is designed to cover all areas of the inner top plate 2. It is fitted on the outside of the inner top plate 2 and its bottom edge is not completely flush with the cabinet 1. The rain cover 3 can be made of engineering plastic to ensure structural stability and lightweight. It is detachably connected to the cabinet 1. It can form the insulation cavity 4 with the inner top plate 2, and can also be removed from the cabinet 1 when maintenance is required, so as to facilitate the inspection or cleaning of the internal components of the insulation cavity 4.

[0022] The heat insulation cavity 4 is a cavity formed by the reserved space between the inner wall of the rainproof cover 3 and the outer wall of the inner top plate 2. Its function is to prevent the high temperature generated by the external sunlight from being directly transferred to the inside of the cabinet 1, while providing a temporary circulation and buffer channel for the hot air inside the cabinet. The cavity is connected to the external environment through the annular gap 5 and to the inside of the cabinet 1 through the exhaust port 6. This can reduce the impact of external heat on the inside of the cabinet 1, and can also accommodate the hot air discharged from the inside of the cabinet 1, providing a path for the hot air to flow to the annular gap 5.

[0023] The annular gap 5 is a slit opened between the bottom edge of the rain cover 3 and the top of the side wall of the cabinet 1. Its function is to enable airflow communication between the heat insulation cavity 4 and the external environment, providing an inlet and outlet for hot air exhaust and cold air entry. This gap allows hot air in the heat insulation cavity 4 to be smoothly exhausted to the outside, and also allows cold air from the outside environment to enter the heat insulation cavity 4 through the gap, forming an airflow circulation, preventing the heat insulation cavity 4 from becoming a closed space and causing hot air to stagnate. At the same time, since the gap is located at the bottom of the rain cover 3, it can reduce the probability of rainwater directly entering the heat insulation cavity 4 through the gap. That is, rainwater will slide outward due to the rain cover 3 and is less likely to enter the gap.

[0024] The exhaust port 6 is a through hole formed in the inner top plate 2. Its function is to connect the internal space of the cabinet 1 with the heat insulation cavity 4, realize the airflow exchange between the two, and allow hot air in the cabinet to enter the heat insulation cavity 4. Its structure is a through hole formed in the inner top plate 2, such as a round hole, square hole or other regular shape, and the number is at least one. The exhaust port 6 and the inner top plate 2 are integrally formed.

[0025] The guide fin group 80 is an airflow guiding structure composed of multiple guide fins 80. Its core function is to guide the hot air entering the heat insulation cavity 4 from the exhaust port 6 to the annular gap 5, so as to prevent the hot air from accumulating around the exhaust port 6. Its structure is a combination of multiple thin sheet-like components. Each guide fin 80 is a flat thin sheet structure, mostly rectangular in shape, and fixed to the inner top plate 2 on the side surface facing the heat insulation cavity 4. The guide fin 80 and the inner top plate 2 can be fixed by welding.

[0026] According to the above design, when the outdoor distribution cabinet is working, the internal electrical components will continuously generate hot air. This hot air, due to its low density, will rise inside the cabinet 1 and then enter the heat insulation cavity 4 formed by the rain cover 3 and the inner top plate 2 through the exhaust port 6 on the inner top plate 2. The hot air entering the heat insulation cavity 4 will come into contact with the guide fins 80 group 8 on the side of the inner top plate 2 facing the heat insulation cavity 4. Under the physical guidance of the guide fins 80, the hot air will flow towards the bottom edge of the rain cover 3 along the arrangement direction of the guide fins 80. Since there is an annular gap 5 between the bottom edge of the rain cover 3 and the cabinet 1, and this gap is connected to the external environment, the hot air will pass through the annular gap 5. The annular gap 5 allows air to be naturally discharged to the external environment. At the same time, the cold air from the external environment, which is at a lower temperature, will enter the insulation cavity 4 through the annular gap 5 under the negative pressure created by the discharge of hot air. It will then slowly exchange airflow with the hot air entering from the exhaust port 6. During this process, the rain cover 3 is always placed over the outside of the inner top plate 2. Its shell-like structure will prevent rainwater, dust and other pollutants from falling directly onto the inner top plate 2 or entering the insulation cavity 4, thereby preventing pollutants from entering the cabinet 1 through the exhaust port 6. The entire process does not require any additional power components. It only relies on natural airflow circulation to dissipate heat inside the cabinet 1, while the rain cover 3 provides top protection, ensuring that heat dissipation and protection are carried out simultaneously.

[0027] The top of the rain cover 3 has a conical structure. This design aims to prevent rainwater and snow from accumulating on the top of the rain cover 3, while also guiding airflow. The conical structure at the top of the rain cover 3 slopes from the center to the edge. When rainwater falls on the top, it slides down the sloping surface towards the edge, preventing rainwater from accumulating on the top and seeping into the insulation cavity 4. Snow can also slide down the conical surface under gravity or melt and flow down smoothly when the temperature rises, avoiding additional burden on the connection structure between the rain cover 3 and the cabinet 1 due to excessive snow weight. Furthermore, the conical structure reduces the area of ​​the top plane exposed to direct sunlight, lowering the heat absorbed by the rain cover 3, while guiding external air along the conical surface to the annular gap 5, assisting in the discharge of hot air from the insulation cavity 4 and maintaining the smooth flow of the heat dissipation channel 7.

[0028] The inner top plate 2 is a conical structure adapted to the conical structure at the top of the rain cover 3. The purpose of this design is to maintain a uniform space in the heat insulation cavity 4 between the inner top plate 2 and the rain cover 3, while also assisting in guiding airflow and heat transfer. The inner top plate 2's conical shape, adapted to the conical structure at the top of the rain cover 3, means that their tilt angles and contours correspond perfectly, preventing any localized areas from being too narrow or too wide. This avoids hot air stagnation in narrow areas of the heat insulation cavity 4, ensuring smooth airflow. Simultaneously, the adapted conical structure allows the inner top plate 2 to fit more closely to the inside of the rain cover 3, reducing the possibility of external heat entering through the gap and better utilizing the heat insulation function of the heat insulation cavity 4. Furthermore, the conical inner top plate 2 also helps guide hot air inside the cabinet 1 towards the exhaust port 6, facilitating rapid entry of hot air into the heat insulation cavity 4, further ensuring the circulation efficiency of the heat dissipation channel 7, and preventing localized accumulation of hot air at the top of the cabinet 1.

[0029] The exhaust port 6 is equipped with a removable filter plate 9. This design aims to prevent dust, debris, and other contaminants from the external environment from entering the cabinet 1 through the exhaust port 6, while also facilitating cleaning or replacement to maintain filtration effectiveness. The filter plate 9 is a sheet-like structure with fine, breathable pores, perfectly matching the diameter and shape of the exhaust port 6 to ensure complete coverage without obstructing airflow. Its connection is detachable; it can be directly embedded into the exhaust port 6 or connected to its edge via clips or slots, allowing for easy removal without special tools. This design allows hot air to enter the insulation chamber 4 normally through the pores of the filter plate 9, while simultaneously intercepting contaminants through the fine pores, preventing them from adhering to the electrical components inside the cabinet 1 and affecting their operation. Furthermore, when excessive dust accumulates on the surface of the filter plate 9, it can be quickly disassembled for cleaning or replacement, ensuring the exhaust port 6 remains unobstructed and its filtration function remains intact.

[0030] The rain cover 3 is detachably fixed to the cabinet 1 by fastening bolts 10. This design ensures a secure connection between the rain cover 3 and the cabinet 1, while facilitating subsequent disassembly for maintenance. The fastening bolts 10, through pre-drilled holes along the edge of the rain cover 3 and corresponding threaded holes on the top of the cabinet 1, firmly secure the rain cover 3 to the cabinet 1, preventing displacement or detachment due to strong winds, vibrations, or other environmental factors, thus ensuring the rain cover 3's protective effect on the top of the cabinet 1. When it is necessary to inspect the interior of the insulation chamber 4, clean the guide fins 80 group 8, or replace the exhaust port 6 filter plate 9, simply unscrew the fastening bolts 10 to remove the rain cover 3 from the cabinet 1. This process does not damage the structure of the rain cover 3 or the cabinet 1. After maintenance, the rain cover 3 is re-secured using the fastening bolts 10, ensuring both reliable connection and ease of maintenance.

[0031] The guide fins 80 are radially distributed around the exhaust port 6. This design aims to guide the hot air entering the insulation cavity 4 from the exhaust port 6 to diffuse evenly towards the annular gap 5, preventing hot air from accumulating around the exhaust port 6. The guide fins 80, radially distributed around the exhaust port 6, extend radially outwards from the exhaust port 6 to the periphery of the insulation cavity 4. When hot air is discharged from the exhaust port 6, it is guided by the guide fins 80 in different directions, flowing along the extension direction of the fins towards the annular gap 5 at the bottom of the rain cover 3, preventing hot air from accumulating near the exhaust port 6 and causing airflow blockage. Simultaneously, the radial distribution allows the hot air to be evenly distributed within the insulation cavity 4 and flow synchronously towards the annular gap 5, ensuring that hot air in all areas of the insulation cavity 4 can be discharged in an orderly manner, avoiding localized hot air stagnation that could affect the overall flow of the heat dissipation channel 7.

[0032] The side wall of the cabinet 1 is provided with an air inlet 11 to prevent rainwater from entering. The purpose of this design is to supply the cabinet 1 with cool outdoor air while preventing rainwater from entering the cabinet 1 with the airflow. The air inlet 11 on the side wall of the cabinet 1 allows cool outdoor air to enter the cabinet 1, filling the space left by the hot air exiting through the exhaust vent 6. This creates an airflow circulation: external cool air → air inlet 11 → cabinet 1 interior → exhaust vent 6 → insulation cavity 4 → annular gap 5 → outside, maintaining airflow within the cabinet 1 to aid in heat dissipation. Simultaneously, the air inlet 11 is equipped with a downward-sloping baffle or louver structure to prevent rainwater from seeping into the cabinet 1 under wind or natural dripping, avoiding short circuits or damage caused by rainwater contacting internal electrical components. This ensures airflow replenishment while maintaining a dry environment inside the cabinet 1.

[0033] According to this embodiment, when the outdoor distribution cabinet is in operation, the hot air generated by the operation of the electrical components inside the cabinet 1 gathers upwards and enters the heat insulation cavity 4 formed by the inner top plate 2 and the removable rain cover 3 through the exhaust port 6 on the inner top plate 2. The exhaust port 6 is equipped with a removable filter plate 9 to block pollutants. The rain cover 3 is fixed to the cabinet 1 by fastening bolts 10, and its top is a conical structure. The inner top plate 2 is a conical structure adapted to the conical structure at the top of the rain cover 3. The hot air entering the heat insulation cavity 4 is guided by the group 80 sets of guide fins 80 radially distributed on the side of the inner top plate 2 facing the heat insulation cavity 4 with the exhaust port 6 as the center. It flows towards the annular gap 5 between the bottom of the rain cover 3 and the cabinet 1, and is finally discharged to the external environment through the annular gap 5. At the same time, the low-temperature air outside enters the interior of the cabinet 1 through the air inlet 11 opened on the side wall of the cabinet 1 to prevent rainwater from entering, filling the space after the hot air is discharged, forming a complete airflow circulation. During this process, the conical structure of the rain cover 3 prevents rain and snow from accumulating, and its detachable design facilitates subsequent maintenance. The entire unit achieves heat dissipation inside the cabinet 1 and rain protection on the top through the coordinated efforts of all components.

[0034] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. An outdoor power distribution cabinet, comprising a cabinet body (1) and an inner top plate (2) disposed on the top, characterized in that, Also includes: A rain cover (3) is detachably installed outside the inner top plate (2). The rain cover (3) and the inner top plate (2) enclose a heat insulation cavity (4). An annular gap (5) is provided between the bottom edge of the rain cover (3) and the cabinet (1). The annular gap (5) allows the heat insulation cavity (4) to communicate with the external environment. At least one exhaust port (6) penetrates the inner top plate (2). The exhaust port (6) is used to connect the interior of the cabinet (1) with the heat insulation cavity (4). The annular gap (5), the heat insulation cavity (4) and the exhaust port (6) together form a heat dissipation channel (7). A group (8) of guide fins (80) is provided on the side of the inner top plate (2) facing the heat insulation cavity (4). The group (8) of guide fins (80) includes a plurality of guide fins (80) for guiding the hot air flow from the exhaust port (6) to the annular gap (5).

2. An outdoor power distribution cabinet according to claim 1, characterized in that, The top of the rain cover (3) is a conical structure.

3. An outdoor power distribution cabinet according to claim 2, characterized in that, The inner top plate (2) is a conical structure adapted to the conical structure at the top of the rain cover (3).

4. An outdoor power distribution cabinet according to claim 1, characterized in that, The exhaust port (6) is equipped with a removable filter plate (9).

5. An outdoor power distribution cabinet according to claim 1, characterized in that, The rain cover (3) is detachably fixed to the cabinet (1) by fastening bolts (10).

6. An outdoor power distribution cabinet according to claim 1, characterized in that, The guide fins (80) are radially distributed with the exhaust port (6) as the center.

7. An outdoor power distribution cabinet according to claim 1, characterized in that, The side wall of the cabinet (1) is provided with an air inlet (11) to prevent rainwater from entering.

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