An explosion-proof switch cabinet

Abstract

This utility model belongs to the field of switchgear and proposes an explosion-proof switchgear, including a cabinet body. A set of partition components is provided on both the left and right sides of the cabinet body. Each partition component includes a side enclosure, which includes a sealing part corresponding to the side where the heat dissipation window is located and a ventilation part corresponding to the rear side of the cabinet body. Sealing covers and ventilation covers are distributed on the sealing part and the ventilation side. A support block is provided at the top and bottom of the cabinet body. Multiple first connection holes are provided on the side of the support block, and the side enclosure has second connection holes corresponding to the first connection holes. The first and second connection holes are connected by screws. A top cover is provided at the top of the cabinet body, nested with the support block. The top cover has multiple cooling chambers and lead wire holes staggered with external terminal blocks. This utility model has a reasonable design, can prevent direct exchange between the heat dissipation window and the external environment, can prevent spark leakage, and is conducive to improving the explosion-proof performance of the switchgear, making it suitable for large-scale promotion.

Description

Technical Field

[0001] This utility model belongs to the field of switch cabinets, and in particular relates to an explosion-proof switch cabinet. Background Technology

[0002] A switchgear is an electrical device that assembles primary and secondary equipment according to a specific circuit scheme. It is mainly used in power systems for the opening, closing, control, and protection of electrical equipment during power generation, transmission, distribution, and energy conversion. The core principle of switchgear explosion-proof design is to prevent potential arcs, sparks, or high temperatures generated inside the cabinet from igniting the external flammable and explosive environment, while simultaneously limiting the destructive force of an internal explosion and preventing the spread of danger.

[0003] Since the ventilation windows on the switchgear serve as a structure for gas exchange between the inside and outside of the cabinet, if sparks occur inside the cabinet, there is a possibility that sparks may escape from the ventilation holes. Furthermore, sparks generated by external connectors and joints also pose a certain danger and have a direct impact on the explosion-proof performance of the switchgear. Utility Model Content

[0004] This utility model addresses the technical problems existing in the aforementioned switchgear by proposing a reasonably designed explosion-proof switchgear that can prevent direct exchange between the heat dissipation window and the external environment, avoid spark leakage, and improve the explosion-proof performance of the switchgear.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides an explosion-proof switch cabinet, including a cabinet body. A heat dissipation window is provided on the side of the cabinet body, and an external connection strip is provided on the top of the cabinet body. A set of partition components is provided on both the left and right sides of the cabinet body. Each partition component includes a side enclosure with an L-shaped cross-section. The side enclosure includes a sealing part corresponding to the side where the heat dissipation window is located and a ventilation part corresponding to the rear side of the cabinet body. A sealing cover and a ventilation cover are distributed on the sealing part and the ventilation side. All are equipped with snap-on plates, and the ventilation cover is also provided with ventilation holes. The top and bottom of the cabinet are provided with a U-shaped support block. The side of the support block is provided with multiple first connection holes. The side shell is provided with several second connection holes corresponding to the first connection holes at positions corresponding to the sealing cover and the ventilation cover. The first connection holes and the second connection holes are connected by screws. The top of the cabinet is provided with a top cover that nests with the support block. The top cover is provided with multiple cooling chambers. The side of the top cover is provided with lead wire holes that are staggered with the external connecting rods on the top of the cabinet.

[0006] Preferably, the sealing cover includes an upper cover body and a lower cover body distributed vertically, and the side shell is provided with a pair of sliding strips at positions corresponding to the sealing cover. The inner side of the upper cover body and the inner side of the lower cover body are both provided with sliding grooves that cooperate with the sliding strips.

[0007] Preferably, the vertical ratio of the upper cover to the lower cover is 3:1.

[0008] Preferably, the support block has an internal groove, and the top cover has a strip that mates with the groove on its side.

[0009] Preferably, the top of the cooling chamber is provided with a connecting nozzle, and the connecting nozzle is provided with a pressure cap.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] This utility model provides an explosion-proof switchgear. By employing a side enclosure, it isolates the heat dissipation window from direct contact with the external environment. A ventilation section provides a deflection path for the heat dissipation direction of the window, and ventilation is achieved through openings in the ventilation cover, effectively preventing sparks from escaping from the heat dissipation window. The top cover protects the external wiring on the cabinet, allowing the wires to bend and exit through the lead-in hole, effectively preventing electrical sparks. Simultaneously, the cooling medium inside the cooling chamber achieves cooling and temperature reduction, thereby effectively improving the explosion-proof performance of the switchgear. This utility model is rationally designed, effectively blocks direct exchange between the heat dissipation window and the external environment, prevents sparks from escaping, and improves the explosion-proof performance of the switchgear, making it suitable for large-scale promotion. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A perspective view of an explosion-proof switchgear provided for an embodiment;

[0014] Figure 2 A front view of an explosion-proof switchgear provided for an embodiment;

[0015] Figure 3 A top view of an explosion-proof switchgear provided for an embodiment;

[0016] Figure 4 A perspective view of an explosion-proof switchgear in another direction, provided for an embodiment;

[0017] Figure 5 An exploded view of an explosion-proof switchgear (without cabinet) provided for an embodiment;

[0018] Figure 6A cross-sectional view of an explosion-proof switchgear (without cabinet) provided for an embodiment;

[0019] Figure 7 for Figure 6 An enlarged schematic diagram of structure A in an explosion-proof switchgear is provided.

[0020] Figure 8 A cross-sectional view of an explosion-proof switch cabinet (without cabinet) provided for an embodiment, in another direction;

[0021] Figure 9 for Figure 8 An enlarged schematic diagram of structure B in an explosion-proof switchgear is provided.

[0022] In the above figures: 1. Cabinet body; 2. Partition assembly; 21. Side shell; 211. Sealing part; 212. Ventilation part; 22. Sealing cover; 221. Upper cover; 222. Lower cover; 23. Ventilation cover; 231. Ventilation hole; 24. Buckle plate; 25. Second connecting hole; 26. Sliding strip; 27. Sliding groove; 3. Support block; 31. First connecting hole; 32. Embedded groove; 4. Top cover; 41. Cooling chamber; 42. Lead wire hole; 43. Embedded strip; 44. Connecting nozzle; 45. Pressure cover. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] Examples, such as Figures 1-9As shown, this utility model provides an explosion-proof switch cabinet, including a cabinet body 1. The cabinet body 1 has a heat dissipation window on its side and an external connector on its top, which is connected to other equipment in the workshop via wires / electrical cables. Furthermore, the cabinet body 1 has a set of partition components 2 on both its left and right sides. Each partition component 2 includes a side enclosure 21 with an L-shaped cross-section. The side enclosure 21 includes a sealing part 211 corresponding to the side with the heat dissipation window and a ventilation part 212 corresponding to the rear side of the cabinet body 1. The sealing part 211 has an opening corresponding to the heat dissipation window to allow the interior of the cabinet body 1 to communicate with the side enclosure 21. A sealing cover 22 and a ventilation cover 23 are distributed on the sealing part 211 and the ventilation side. The positions where the sealing cover 22 and the ventilation cover are installed protrude outwards by a certain thickness to provide the corresponding installation opening diameter. Both the sealing cover 22 and the ventilation cover 23 are provided with a buckle plate 24. The buckle plate 24 can be used to hold and disassemble the sealing cover 22 and the ventilation cover 23; the ventilation cover 23 is also provided with ventilation holes 231. The top and bottom of the cabinet 1 are provided with a U-shaped support block 3. The side of the support block 3 is provided with multiple first connection holes 31. The side shell 21 is provided with several second connection holes 25 corresponding to the first connection holes 31 at the positions corresponding to the sealing cover 22 and the ventilation cover 23. The first connection holes 31 and the second connection holes 25 are connected by screws. The top of the cabinet 1 is provided with a top cover 4 that nests with the support block 3. The top cover 4 is provided with multiple cooling chambers 41. The side of the top cover 4 is provided with lead wire holes 42 that are staggered with the external connecting strips on the top of the cabinet 1.

[0026] Specifically, the two side shells 21 are installed at the two corners of the cabinet 1 in a semi-enclosed manner, and are fixedly installed with the added support blocks 3 by screws. The bottom support block 3 not only connects the side shells 21, but also provides a certain clearance from the ground. The top support block 3 connects the side shells 21 and also installs the top cover 4. The support blocks 3 are welded to the cabinet 1 to maintain a single unit. The screws connecting the support blocks 3 do not penetrate the cabinet 1, so the electrical performance inside the cabinet 1 is not affected at the screw connection points. Furthermore, this invention employs a side enclosure 21 to isolate the heat dissipation window from direct contact with the external environment. The ventilation section 212 provides a deflection path for the heat dissipation direction of the window, and ventilation is achieved through the openings in the ventilation cover 23, effectively preventing sparks from escaping from the heat dissipation window. The top cover 4 protects the external connectors on the cabinet 1, and allows the wires connecting to the external connectors to bend and exit through the lead-in hole 42, effectively preventing electrical sparks. In addition, the cooling medium inside the cooling chamber 41 achieves cooling and temperature reduction, thereby effectively improving the explosion-proof performance of the switchgear. Therefore, this device is rationally designed, effectively blocks direct exchange between the heat dissipation window and the external environment, prevents sparks from escaping, and improves the explosion-proof performance of the switchgear.

[0027] To facilitate daily maintenance and repair, the sealing cover 22 and ventilation cover 23 provided by this invention adopt the same structure for installation and cooperation with the side shell 21. Regarding the sealing cover 22, its installation position maintains a certain staggered distance from the heat dissipation window to further reduce the probability of sparks escaping from the sealing cover 22. The sealing cover 22 provided by this utility model includes an upper cover body 221 and a lower cover body 222 distributed vertically. The side shell 21 is provided with a pair of sliding strips 26 at the position corresponding to the sealing cover 22. The inner side of the upper cover body 221 and the inner side of the lower cover body 222 are both provided with sliding grooves 27 that cooperate with the sliding strips 26. After the sliding sleeve and the sliding groove 27 are assembled, they have a certain tight fit effect to prevent the upper cover body 221 and the lower cover body 222 from moving freely. In this way, the upper cover 221 can be disassembled and assembled by sliding up and down, and the sliding groove 27 and the sliding strip 26 provide a certain sealing surface. The top surface of the upper cover 221 and the bottom surface of the lower cover 222 are also sealing surfaces, which not only ensures the sealing performance of the sealing cover 22, but also facilitates the regular maintenance and repair of the heat dissipation window.

[0028] Furthermore, the vertical ratio of the upper cover 221 to the lower cover 222 provided by this utility model is 3:1. In this way, the lower cover 222 can basically maintain its position after installation. If it is located near the maintenance ventilation window and some screw connections, only the upper cover 221 needs to be removed to open up a sufficient area.

[0029] To improve the fit between the support block 3 and the top cover 4, the support block 3 provided by this invention has an internal groove 32, and the side of the top cover 4 has an insert strip 43 that mates with the groove 32. The insert strip 43 has a moderate thickness. By applying external pressure, the top cover 4 can cause the insert strip 43 to slightly contract along the inner wall of the support block 3 until the insert strip 43 is stuck in the groove 32, thereby allowing the top cover 4 to quickly press onto the support block 3 and achieve better connection reliability.

[0030] like Figure 2 As shown, the top of the cooling chamber 41 of this utility model is provided with a connecting nozzle 44, and a pressure cap 45 is provided on the connecting nozzle 44. The pressure cap 45 can be connected to the connecting nozzle 44 by means of threaded connection or by means of tight fit; by removing the pressure cap 45, cooling medium can be added to the cooling chamber 41 to ensure the cooling performance of the cooling chamber 41 in its vertical coverage area.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An explosion-proof switch cabinet, comprising a cabinet body, wherein the side of the cabinet body is provided with ventilation windows, and the top of the cabinet body is provided with external connection strips, characterized in that, A set of partition components is provided on both the left and right sides of the cabinet. Each partition component includes a side shell with an L-shaped cross-section. The side shell includes a sealing part corresponding to the side where the heat dissipation window is located and a ventilation part corresponding to the rear side of the cabinet. A sealing cover and a ventilation cover are distributed on the sealing part and the ventilation side. Both the sealing cover and the ventilation cover are provided with buckles. The ventilation cover is also provided with ventilation holes. A U-shaped support block is provided on the top and bottom of the cabinet. The side of the support block is provided with multiple first connection holes. The side shell is provided with multiple second connection holes corresponding to the first connection holes at the positions corresponding to the sealing cover and the ventilation cover. The first connection holes and the second connection holes are connected by screws. The top of the cabinet is provided with a top cover that nests with the support block. The top cover is provided with multiple cooling chambers. The side of the top cover is provided with lead wire holes that are staggered with the external wiring of the top of the cabinet.

2. The explosion-proof switchgear according to claim 1, characterized in that, The sealing cover includes an upper cover body and a lower cover body distributed vertically. The side shell is provided with a pair of sliding strips at positions corresponding to the sealing cover. The inner side of the upper cover body and the inner side of the lower cover body are both provided with sliding grooves that cooperate with the sliding strips.

3. The explosion-proof switchgear according to claim 2, characterized in that, The vertical ratio of the upper cover to the lower cover is 3:

1.

4. The explosion-proof switchgear according to claim 3, characterized in that, The support block has an internal groove, and the top cover has a strip that mates with the groove on its side.

5. The explosion-proof switchgear according to claim 3, characterized in that, The top of the cooling chamber is provided with a connecting nozzle, and the connecting nozzle is provided with a pressure cap.

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