Air-insulated ring main unit switchgear with controlled temperature rise

Abstract

The utility model discloses a kind of air-insulated ring network switch devices of temperature rise control, the air-insulated ring network switch devices of temperature rise control include box, ring network switch device body, multiple first partitions are equipped in the box, and the equipment area of accommodating single ring network switch device body is formed, the both sides of the ring network switch device body are equipped with side plate, the side plate is equipped with several equidistance first radiating fins, the bottom of the equipment area is equipped with several equidistance ventilation holes. Hot air inside box is sucked to outside by heat dissipation fan, cold air enters by ventilation hole, and heat exchange is carried out with first radiating fin, and the suction efficiency of flow guide groove is improved, hot air is conducted to second radiating fin by radiating portion on the top of box, and hot air is discharged by top cover, and the heat dissipation effect is enhanced, by optimizing hot air flow path and the mutual cooperation of multiple radiating structures, reduce local overheating risk, improve equipment operation stability and security.

Description

Technical Field

[0001] The present utility model relates to the technical field of ring main switchgear, and in particular to an air insulated ring main switch device for temperature rise control. Background Art

[0002] Air Insulated Ring Main Unit (AIRMU) is a high-voltage switchgear that uses air as the insulating medium. It is mainly used in the power distribution link of power systems to achieve the functions of electric energy distribution, protection and control. Its core components include circuit breakers, load switches, isolating switches, etc., which are integrated into a metal cabinet through modular design, and are suitable for urban power grids, industrial power distribution and new energy scenarios.

[0003] Existing air insulated ring main switchgear is usually installed side by side and placed in a closed box, which makes it difficult for the heat generated during equipment operation to be effectively dissipated. Heat between adjacent devices affects each other, forming local temperature rise, which further adversely affects the stable operation of electrical components inside the equipment. Conventional heat dissipation methods mostly rely on forced ventilation by fans, but their heat dissipation efficiency is limited, and it is difficult to meet the heat dissipation requirements of equipment in a high-density arrangement environment. The increase in internal temperature of the equipment may cause problems such as reduced insulation performance and accelerated component aging, which affect the overall operation reliability and service life of the equipment. Therefore, it is urgent to improve the heat dissipation structure of the existing air insulated ring main switchgear to enhance its operation stability and safety under complex working conditions. Summary of the Invention

[0004] The purpose of the present utility model is to overcome the deficiencies existing in the design of the above-mentioned traditional air insulated ring main switchgear, and provide a product with stable operation and temperature rise control.

[0005] To solve the above problems, the present utility model adopts the following technical solution.

[0006] An air insulated ring main switch device for temperature rise control comprises a box body and a ring main switch device body, wherein a plurality of first partition plates are arranged in the box body to form equipment areas for accommodating a single ring main switch device body; side plates are arranged on both sides of the ring main switch device body, and a plurality of first heat dissipation fins arranged at equal intervals are arranged on the side plates; a plurality of ventilation holes arranged at equal intervals are arranged at the bottom of the equipment area and located below the first heat dissipation fins; the box body is provided with a box cover, a raised heat dissipation part is arranged in the box cover, the heat dissipation part is provided with an inwardly recessed and inclined flow guide groove located above the equipment area, a heat dissipation fan is arranged at the air flow converging position of the flow guide groove, and a plurality of second heat dissipation fins arranged at equal intervals are arranged on the back surface of the heat dissipation part; and a top cover for guiding air flow to both sides is arranged above the box cover.

[0007] Preferably, the second heat dissipation fin includes a heat-conducting part located below the ring network switchgear body and a convection enhancement part located above the ring network switchgear body, and a stepped diffusion filter part is provided between the heat-conducting part and the convection enhancement part.

[0008] Preferably, the lid has several equally spaced heat dissipation holes on both sides.

[0009] Preferably, the top cover has an upwardly recessed and inclined guide portion located above the cooling fan to guide airflow to the cooling holes, and the top cover has extension portions on both sides located on both sides of the cover.

[0010] Preferably, a second partition is provided between adjacent heat dissipation portions, and the second partition is in close contact with the guide portion.

[0011] Preferably, the inlet of the ventilation hole is provided with a horizontally pull-out filter screen.

[0012] Preferably, the bottom of the housing is provided with a support base located on both sides of the filter screen, and one side of the support base is provided with a guide groove for accommodating the pull-out of the filter screen.

[0013] Beneficial effects:

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention utilizes a cooling fan to draw hot air from inside the enclosure to the outside, while cool air enters through ventilation holes, creating an air convection circulation. The cool air exchanges heat with the first cooling fins, improving heat dissipation efficiency. A guide channel concentrates and guides the hot air to the inlet of the cooling fan, enhancing the suction effect and accelerating the exhaust of hot air. Hot air above the enclosure is conducted to the second cooling fins through the heat dissipation section. The top cover effectively guides the hot air exhausted by the cooling fan, enhancing airflow guidance and carrying hot air from the second cooling fins. This improves the efficiency of hot air exhaust while also effectively enhancing the operational stability of the equipment and reducing the internal temperature of the enclosure. By optimizing the hot air flow path, the risk of localized overheating of the ring network switchgear is reduced, improving operational safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an air-insulated ring network switchgear for controlling temperature rise according to this utility model;

[0017] Figure 2 This is a front view of an air-insulated ring network switchgear for controlling temperature rise according to this utility model;

[0018] Figure 3 This is a side cross-sectional view of an air-insulated ring network switchgear for controlling temperature rise according to this utility model.

[0019] Figure 4 This is a schematic diagram of the internal structure of the cover of an air-insulated ring network switchgear for controlling temperature rise, according to the present invention.

[0020] The correspondence between the labels and component names in the attached figures is as follows:

[0021] Reference numerals: 1. Enclosure; 2. Ring main unit; 3. First partition; 4. Enclosure cover; 5. Cooling fan; 6. Top cover; 7. Second partition; 8. Filter screen; 11. Equipment area; 12. Ventilation hole; 13. Support base; 131. Guide groove; 21. Side plate; 22. First heat dissipation fin; 221. Heat conduction part; 222. Convection enhancement part; 223. Diffusion filtration part; 41. Heat dissipation part; 42. Second heat dissipation fin; 43. Heat dissipation hole; 411. Guide groove; 61. Guide part; 62. Extension part. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0025] Reference example Figures 1 to 4An air-insulated ring main switchgear for controlling temperature rise includes a housing 1 and a ring main switchgear body 2. The housing 1 has multiple first partitions 3 inside, forming an equipment area 11 that accommodates a single ring main switchgear body 2. The ring main switchgear body 2 has side plates 21 on both sides, and the side plates 21 have several equally spaced first heat dissipation fins 22. The bottom of the equipment area 11 has several equally spaced ventilation holes 12 located below the first heat dissipation fins 22. The housing 1 has a cover 4, and the cover 4 has a protruding heat dissipation part 41 inside. The heat dissipation part 41 has an inwardly recessed and inclined guide groove 411 located above the equipment area 11. A cooling fan 5 is provided at the airflow gathering position of the guide groove 411. The back of the heat dissipation part 41 has several equally spaced second heat dissipation fins 42. The top of the cover 4 has a top cover 6 for guiding airflow to both sides.

[0026] The cooling fan 5 draws hot air from inside the enclosure 1 to the outside, while cool air enters through the ventilation holes 12, forming an air convection circulation. The cool air exchanges heat with the first heat dissipation fins 22, improving heat dissipation efficiency. The guide channel 411 concentrates the hot air to the inlet of the cooling fan 5, enhancing the suction effect and accelerating the exhaust speed of the hot air. The hot air above the enclosure 1 is conducted to the second heat dissipation fins 42 through the heat dissipation part 41. The top cover 6 effectively guides the hot air exhausted by the cooling fan 5, enhancing the airflow guidance effect and carrying the hot air from the second heat dissipation fins 42. This improves the efficiency of hot air exhaust and also effectively enhances the stability of equipment operation, reduces the internal temperature of the enclosure 1, and reduces the risk of local overheating of the ring network switchgear body 2 by optimizing the hot air flow path, thus improving the safety of equipment operation.

[0027] It is worth mentioning that the second heat dissipation fin 42 includes a heat-conducting part 221 located below the ring network switchgear body 2 and a convection enhancement part 222 located above the ring network switchgear body 2. A stepped diffusion filter part 223 is provided between the heat-conducting part 221 and the convection enhancement part 222. Cold air enters from the root of the heat-conducting part 221 and exchanges heat with the heat-conducting part 221. The diffusion filter part 223 forms a stepped height difference between the heat-conducting part 221 and the convection enhancement part 222. Turbulence is generated at the drop point, which effectively removes heat. Cold air enters the high-temperature area of ​​the convection enhancement part 222 along the root of the convection enhancement part 222 to achieve heat exchange and improve heat dissipation efficiency. This structural design enhances airflow disturbance, improves heat distribution, and effectively controls the temperature rise of the ring network switchgear.

[0028] It is worth mentioning that there are several equally spaced heat dissipation holes 43 on both sides of the lid 4, from which hot air is discharged in an orderly manner;

[0029] It is worth mentioning that the top cover 6 is provided with an upwardly recessed and inclined guide part 61, which is located above the cooling fan 5 and is used to guide the airflow to the heat dissipation hole 43. The top cover 6 is provided with extension parts 62 on both sides, which are located on both sides of the cover 4. The hot air blown out by the cooling fan 5 is guided to the heat dissipation hole 43 in an orderly manner through the inclined guide part 61, so as to avoid the gas from generating turbulence here. At the same time, the hot air also carries the hot air of the second heat dissipation fin 42 to the heat dissipation hole 43. The extension part 62 prevents rainwater from entering the cover 4 due to the influence of wind.

[0030] It is worth mentioning that a second partition 7 is provided between adjacent heat dissipation parts 41. The second partition 7 is in close contact with the guide part 61. The second partition 7 prevents the air blown out by the adjacent heat dissipation fan 5 from generating turbulence at the junction, thus hindering the gas guiding function of the guide part 61.

[0031] It is worth mentioning that a horizontally pull-out filter 8 is provided at the entrance of the ventilation hole 12. The filter 8 filters out the air entering the box 1 and prevents too much dust from adhering to the surface of the first heat dissipation fin 22, thus reducing the heat exchange efficiency.

[0032] It is worth mentioning that the bottom of the housing 1 is provided with a support base 13, which is located on both sides of the filter screen 8. One side of the support base 13 is provided with a guide groove 131 to accommodate the pull-out of the filter screen 8. The support base 13 increases the distance between the filter screen 8 and the ground, making it easier for cold air to enter the housing 1 from the filter screen 8.

[0033] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. An air-insulated ring main switchgear for controlling temperature rise, comprising a housing (1) and a ring main switchgear body (2), characterized in that: The enclosure (1) is provided with multiple first partitions (3) and forms an equipment area (11) for accommodating a single ring network switchgear body (2). The ring network switchgear body (2) is provided with side plates (21) on both sides. The side plates (21) are provided with several equal-spaced first heat dissipation fins (22). The bottom of the equipment area (11) is provided with several equal-spaced ventilation holes (12) located below the first heat dissipation fins (22). The enclosure (1) is provided with a cover (4). The cover (4) is provided with a protruding heat dissipation part (41). The heat dissipation part (41) is provided with an inwardly recessed and inclined guide groove (411) located above the equipment area (11). A cooling fan (5) is provided at the airflow gathering position of the guide groove (411). The back of the heat dissipation part (41) is provided with several equal-spaced second heat dissipation fins (42). The top of the cover (4) is provided with a top cover (6) for guiding airflow to both sides.

2. The air-insulated ring main switchgear for controlling temperature rise according to claim 1, characterized in that: The second heat dissipation fin (42) includes a heat-conducting part (221) located below the ring network switchgear body (2) and a convection enhancement part (222) located above the ring network switchgear body (2). A stepped diffusion filter part (223) is provided between the heat-conducting part (221) and the convection enhancement part (222).

3. The air-insulated ring main switchgear for controlling temperature rise according to claim 1, characterized in that: The box cover (4) has several equally spaced heat dissipation holes (43) on both sides.

4. The air-insulated ring main switchgear for controlling temperature rise according to claim 3, characterized in that: The top cover (6) is provided with an upwardly recessed and inclined guide portion (61) and is located above the heat dissipation fan (5) to guide airflow to the heat dissipation hole (43). The top cover (6) is provided with extension portions (62) on both sides and is located on both sides of the box cover (4).

5. The air-insulated ring main switchgear for controlling temperature rise according to claim 4, characterized in that: A second partition (7) is provided between adjacent heat dissipation parts (41), and the second partition (7) is in close contact with the guide part (61).

6. The air-insulated ring main switchgear for controlling temperature rise according to claim 1, characterized in that: The ventilation hole (12) is equipped with a horizontally pull-out filter screen (8) at its entrance.

7. The air-insulated ring main switchgear for controlling temperature rise according to claim 1, characterized in that: The bottom of the housing (1) is provided with a support base (13) and located on both sides of the filter screen (8). One side of the support base (13) is provided with a guide groove (131) for accommodating the pull-out of the filter screen (8).

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