Switchgear

Abstract

The utility model belongs to the technical field of medium voltage distribution equipment, disclose a kind of switch cabinet, including cabinet and arc discharge pressure relief device.Arc discharge pressure relief device includes multiple mutually connected and is surrounded in the connecting plate of cabinet top edge, the lower end of connecting plate is detachably connected or rotatably connected with the top end of cabinet, detachably connected between any two adjacent connecting plates, each connecting plate is outwardly inclined to set, to make multiple connecting plate form the arc passage of horn mouth shape.The switch cabinet is provided with the arc passage of horn mouth shape in the top end of cabinet, so that when arc fault occurs in cabinet, high-pressure gas is discharged through the arc passage, and the discharge speed is fast.In addition, the connecting plates can be spliced according to the width of the cabinet by detachable connection between the connecting plates, so that matching installation on different specifications of the cabinet can be realized.The lower end of the connecting plate is detachably connected or rotatably connected with the cabinet to facilitate transportation.

Description

Technical Field

[0001] This utility model relates to the field of medium-voltage power distribution equipment technology, and in particular to a switch cabinet. Background Technology

[0002] Switchgear is a crucial piece of equipment in power systems, containing numerous electrical components. During operation, various factors (such as insulation failures and overvoltage) can trigger internal arcing faults within the switchgear. These arcing faults release energy and can potentially cause the switchgear to explode, resulting in serious injury to personnel and equipment. Therefore, to ensure the safe operation of power systems, effective protection against internal arcing faults in switchgear is essential.

[0003] In existing technologies, a closed channel is typically connected to the pressure relief port at the top of the switchgear to release high-pressure gas to a safe area, thereby reducing the pressure in the switchgear. However, this closed channel design suffers from slow pressure relief, and in cases of severe arcing faults that release significant energy, there is a risk of damage to the switchgear. Furthermore, the closed channel design is relatively complex, making installation and transportation inconvenient. Utility Model Content

[0004] The purpose of this utility model is to provide a switch cabinet that can quickly release pressure and is convenient for transportation and disassembly.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Switchgear, including:

[0007] Cabinet;

[0008] The arc-relieving device includes multiple interconnected connecting plates surrounding the top edge of the cabinet. The lower end of each connecting plate is detachably or rotatably connected to the top of the cabinet. Any two adjacent connecting plates are detachably connected. Each connecting plate is inclined outward so that the multiple connecting plates form a funnel-shaped arc-relieving channel.

[0009] As an optional solution, the lower end of the connecting plate is provided with a first lower folding plate, the first lower folding plate is provided with a first mounting hole, and the top of the cabinet is provided with a first connecting hole corresponding to the first mounting hole;

[0010] The arc relief device further includes a first connector corresponding to the first mounting hole. The first connector is used to pass through the first mounting hole and the first connecting hole to connect the first lower folding plate and the cabinet.

[0011] As an alternative, the connecting plate is rotatably connected to the cabinet via a hinge;

[0012] The arc relief device also includes a baffle plate disposed at the top edge of the cabinet and corresponding to the connecting plate. The baffle plate abuts against the outer side of the corresponding connecting plate to keep the connecting plate tilted.

[0013] As an alternative, the baffle includes a connecting part and an arc-shaped part, the connecting part being used to connect to the top of the cabinet, and the arc-shaped part being used to abut against the outer side of the connecting plate.

[0014] As an optional solution, side folding plates are provided on both ends of the connecting plate, and the side folding plates are provided with second mounting holes;

[0015] The arc-relieving device further includes a second connector, which is used to pass through the second mounting hole on two adjacent side folding plates to connect the two adjacent connecting plates.

[0016] As an alternative, any two adjacent connecting plates located on the wide side of the cabinet are connected to the cabinet via a pull rope structure. One end of the pull rope structure is connected to two adjacent side folding plates on the corresponding two connecting plates, and the other end is connected to the top of the cabinet.

[0017] As an optional solution, a third mounting hole is also provided on the side folding plate;

[0018] The pull rope structure includes a steel wire rope, a connecting pin, and a lifting ring. The lifting ring is located at the top of the cabinet. The connecting pin passes through the third mounting hole on two interconnected side folding plates. The steel wire rope is connected to the lifting ring and the connecting pin.

[0019] As an alternative, the wire rope is threaded through the lifting ring to form a double rope, and the end of the double rope away from the lifting ring is connected to the connecting pin.

[0020] As an alternative, the connecting plate is provided with an upper folding plate at the end away from the cabinet, and the upper folding plate is bent toward the arc channel.

[0021] As an alternative, the cabinet includes a first cabinet and a second cabinet connected side by side along the width direction of the cabinet, with at least one of each type of cabinet, and the depth dimension of the first cabinet is smaller than the depth dimension of the second cabinet along the depth direction of the cabinet.

[0022] The adjacent first cabinet and the second cabinet are connected by a splicing plate between the connecting plate located at the rear end of the first cabinet and the connecting plate located at the rear end of the second cabinet; or, the adjacent first cabinet and the second cabinet are connected by a splicing plate between the connecting plate located at the front end of the first cabinet and the connecting plate located at the front end of the second cabinet.

[0023] The beneficial effects of this utility model are:

[0024] The switch cabinet provided by this utility model has a funnel-shaped arc channel at the top of the cabinet. This open structure allows high-pressure gas to be released quickly in the event of an arc fault, effectively preventing damage to the cabinet. Furthermore, the outwardly inclined connecting plates can catch and block the outward spread of arc particles, protecting surrounding personnel. Additionally, the detachable connection between the connecting plates allows for splicing according to the width of the cabinet, enabling matching installation on cabinets of different sizes, thus enhancing practicality. The lower end of the connecting plates is detachably or rotatably connected to the cabinet, allowing for removal during transportation or rotation to cover the cabinet, facilitating transport. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of the switch cabinet provided in Embodiment 1 of this utility model (only the first cabinet is included).

[0026] Figure 2 This is a structural schematic diagram of the switch cabinet provided in Embodiment 1 of this utility model (only the second cabinet is included).

[0027] Figure 3 This is a structural schematic diagram of the switch cabinet provided in Embodiment 1 of this utility model (including a first cabinet and a second cabinet).

[0028] Figure 4 This is a schematic diagram of the connecting plate involved in Embodiment 1 of this utility model;

[0029] Figure 5 This is a schematic diagram of the splicing plate according to Embodiment 1 of this utility model;

[0030] Figure 6 yes Figure 3 Enlarged view of the structure at point A in the middle;

[0031] Figure 7 yes Figure 3 Enlarged view of the structure at point B;

[0032] Figure 8 This is a structural schematic diagram of the switch cabinet provided in Embodiment 2 of this utility model (including a first cabinet and a second cabinet).

[0033] Figure 9 This is a schematic diagram of the baffle involved in Embodiment 2 of this utility model.

[0034] In the picture:

[0035] 1. Cabinet; 11. First cabinet; 12. Second cabinet;

[0036] 2. Arc relief device; 21. Connecting plate; 211. First lower folding plate; 212. Side folding plate; 2121. Second mounting hole; 2122. Third mounting hole; 213. Upper folding plate; 22. Splicing plate; 221. Fourth mounting hole; 222. Bent edge; 223. Second lower folding plate; 23. Pull rope structure; 231. Steel wire rope; 232. Connecting pin; 233. Lifting ring; 24. Hinge; 25. Baffle; 251. Connecting part; 2511. Fifth mounting hole; 252. Arc part;

[0037] 3. Mesh pressure relief plate. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] Example 1

[0043] like Figures 1-7 As shown, this utility model embodiment provides a switch cabinet, which includes a cabinet body 1 and an arc-relieving device 2. The arc-relieving device 2 includes multiple interconnected connecting plates 21 surrounding the top edge of the cabinet body 1. The lower end of each connecting plate 21 is detachably or rotatably connected to the top of the cabinet body 1. Any two adjacent connecting plates 21 are detachably connected. Each connecting plate 21 is inclined outwards so that the multiple connecting plates 21 form a funnel-shaped arc-relieving channel.

[0044] The switchgear features a funnel-shaped arc channel at the top of cabinet 1, an open structure that allows high-pressure gas to be released quickly in the event of an arc fault, effectively preventing damage to cabinet 1. The outwardly inclined connecting plates 21 can catch and block the outward spread of arc particles, protecting surrounding personnel. Furthermore, the detachable connection between the connecting plates 21 allows for splicing according to the width of cabinet 1, enabling installation on cabinets of different sizes, thus enhancing practicality. The lower end of the connecting plates 21 is detachably or rotatably connected to cabinet 1, allowing for removal during transport or rotation to cover cabinet 1 for convenient transport.

[0045] In one embodiment, the cabinet 1 includes only a first cabinet 11 or a second cabinet 12 of the same specifications and dimensions. The width of the first cabinet 11 is smaller than the width of the second cabinet 12, and the depth of the first cabinet 11 is also smaller than the depth of the second cabinet 12.

[0046] For example, refer to Figure 1 The cabinet 1 includes two first cabinets 11 connected sequentially along their width direction. Eight connecting plates 21 are provided. Two connecting plates 21 are distributed one-to-one with the two first cabinets 11 and connected to the front edge of the two first cabinets 11. Two connecting plates 21 are distributed one-to-one with the two first cabinets 11 and connected to the rear edge of the two first cabinets 11. Two connecting plates 21 are connected to the left edge of the first cabinet 11 located on the left side and two connecting plates 21 are connected to the right edge of the first cabinet 11 located on the right side.

[0047] For example, refer to Figure 2The cabinet 1 includes three second cabinets 12 connected sequentially along its width. Ten connecting plates 21 are provided. Three connecting plates 21 are distributed and connected to the front edge of the three second cabinets 12 respectively, and three connecting plates 21 are distributed and connected to the rear edge of the three second cabinets 12 respectively, two connecting plates 21 are connected to the left edge of the second cabinet 12 located on the left side, and two connecting plates 21 are connected to the right edge of the second cabinet 12 located on the right side.

[0048] It is understood that the lower width of the connecting plate 21 corresponding to the first cabinet 11 is the same as the width of the first cabinet 11; the lower width of the connecting plate 21 corresponding to the second cabinet 12 is the same as the width of the second cabinet 12.

[0049] In another embodiment, the cabinet 1 includes a first cabinet 11 and a second cabinet 12 connected side by side along the width direction of the cabinet 1. At least one of the first cabinet 11 and the second cabinet 12 is provided. The dimension of the first cabinet 11 along the depth direction of the cabinet 1 is smaller than the dimension of the second cabinet 12 along the depth direction of the cabinet 1. Since the depth dimensions of the first cabinet 11 and the second cabinet 12 are different, the connecting plate 21 at the rear end of the first cabinet 11 and the connecting plate 21 at the rear end of the second cabinet 12 are connected by a splicing plate 22 so that the front ends of the first cabinet 11 and the second cabinet 12 are flush; or the connecting plate 21 at the front end of the first cabinet 11 and the connecting plate 21 at the front end of the second cabinet 12 are connected by a splicing plate 22 so that the rear ends of the first cabinet 11 and the second cabinet 12 are flush.

[0050] For example, refer to Figure 3 Cabinet 1 includes two first cabinets 11 and three second cabinets 12. The three second cabinets 12 and the two first cabinets 11 are arranged sequentially from left to right. The front ends of the first cabinets 11 and the second cabinets 12 are flush. The connecting plate 21 at the rear end of the first cabinet 11 and the connecting plate 21 at the rear end of the second cabinet 12 are not flush. Therefore, in the direction from left to right, the connecting plate 21 at the rear end of the third second cabinet 12 and the connecting plate 21 at the rear end of the fourth first cabinet 11 are connected by a splicing plate 22 to solve the problem of the rear ends of the first cabinets 11 and the second cabinets 12 not being flush.

[0051] By rationally setting individual connecting plates 21 and splicing them together, a funnel-shaped arc channel is formed, which is simple and convenient to assemble and disassemble, and can be used for cabinets 1 with different specifications.

[0052] To achieve a detachable connection between the connecting plate 21 and the top of the cabinet 1, refer to Figure 4The lower end of the connecting plate 21 is provided with a first lower folding plate 211, and the first lower folding plate 211 is provided with a first mounting hole 2111 (one or more can be provided). The top of the cabinet 1 is provided with a first connecting hole corresponding to the first mounting hole 2111. The arc relief device 2 also includes a first connector corresponding to the first mounting hole 2111. The first connector passes through the first mounting hole 2111 and the first connecting hole to connect the first lower folding plate 211 and the cabinet 1. When disassembly is required, the first connector is removed to achieve a detachable connection between the connecting plate 21 and the cabinet 1.

[0053] Optionally, the first connector can be a screw, the first mounting hole 2111 is a through hole, and the first connecting hole is a threaded hole. The connection is achieved by passing the first connector through the first mounting hole 2111 and screwing it into the first connecting hole.

[0054] Optionally, both ends of the connecting plate 21 are provided with side folding plates 212 extending into the arc channel. The side folding plates 212 are perpendicular to the connecting plate 21. The side folding plates 212 are provided with second mounting holes 2121 (one or more can be provided). The arc pressure relief device 2 also includes a second connector. When multiple connecting plates 21 are arranged around the top of the cabinet 1, the outer surfaces of the side folding plates 212 on two adjacent connecting plates 21 are in contact with each other, and the second mounting holes 2121 on the two side folding plates 212 are aligned. The second connector passes through the second mounting holes 2121 on the two side folding plates 212 to connect the two adjacent side folding plates 212, thereby realizing the mutual connection of the connecting plates 21.

[0055] Optionally, the second connector can be a combination of bolts and nuts. The second mounting hole 2121 is set as a through hole, through which bolts are inserted and threaded onto the two second mounting holes 2121, and nuts are screwed onto the bolts to achieve the connection.

[0056] In this embodiment, refer to Figure 5 The splicing plate 22 is provided with two sets of fourth mounting holes 221 corresponding to the two adjacent connecting plates 21. The fourth mounting holes 221 are distributed in correspondence with the second mounting holes 2121 on the two connecting plates 21, and are inserted into the corresponding fourth mounting holes 221 and second mounting holes 2121 by a third connector (which can be a combination of bolts and nuts) to realize the connection between the splicing plate 22 and the connecting plate 21.

[0057] Furthermore, a bent edge 222 is provided at one end of the splicing plate 22 corresponding to the connecting plate 21 located on the first cabinet 11. The bent edge 222 overlaps the side folding plate 212 of the connecting plate 21 located on the first cabinet 11. A second lower folding plate 223 is also provided at the lower end of the splicing plate 22. The second lower folding plate 223 is also connected to the top of the second cabinet 12. The second lower folding plate 223 and the first lower folding plate 211 have the same structure.

[0058] To further ensure the stability of the connecting plate 21 when it is tilted, refer to Figures 3-4 and combined Figures 6-7 In the connecting plate 21 located on the wide side of the cabinet 1 (that is, the connecting plate located at the front and rear ends of the cabinet 1), any two adjacent connecting plates 21 are connected to the cabinet 1 by a pull rope structure 23. One end of the pull rope structure 23 is connected to the two adjacent side folding plates 212 on the two connecting plates 21, and the other end is connected to the top of the cabinet 1.

[0059] It should be noted that the side folding plate 212 can also extend outward from the arc channel when the pull rope structure 23 is not required. In this embodiment, the side folding plate 212 extends inward from the arc channel to facilitate the installation of the pull rope structure 23.

[0060] Specifically, the side folding plate 212 is also provided with a third mounting hole 2122; the pull rope structure 23 includes a steel wire rope 231, a connecting pin 232 and a lifting ring 233. The lifting ring 233 is located at the top of the cabinet 1. The connecting pin 232 passes through the third mounting hole 2122 on the two interconnected side folding plates 212. The steel wire rope 231 is connected between the lifting ring 233 and the connecting pin 232 so that the steel wire rope 231 tightens the connecting plate 21, thereby further improving the installation stability of the connecting plate 21.

[0061] Furthermore, the wire rope 231 is threaded through the lifting ring 233 to form a double rope. The end of the double rope away from the lifting ring 233 is connected to the connecting pin 232. By setting the wire rope 231 as a double rope, the load-bearing capacity of the wire rope 231 can be improved, and the probability of the wire rope 231 being pulled apart can be effectively reduced.

[0062] Optionally, the upper end of the connecting plate 21 is provided with an upper folding plate 213, which bends and extends toward the arc channel. When an arc fault occurs in the cabinet 1, the arc particles are ejected through the top of the cabinet 1 and splash onto the connecting plate 21. The upper folding plate 213 can effectively block the arc particles, and the upper folding plate 213 can also improve the structural strength of the connecting plate 21.

[0063] In this embodiment, a mesh pressure relief plate 3 is provided at the top of the cabinet 1. When an arc fault occurs inside the cabinet 1, the mesh pressure relief plate 3 will spring open with the pressure. The skirt-type open arc channel can release the high-pressure gas in time and collect the arc particles caused by the arc fault, avoiding splashing that could cause injury to other equipment or personnel in the surrounding area.

[0064] Example 2

[0065] The switch cabinet provided in this embodiment has a structure that is basically the same as that in Embodiment 1. For convenience, only the differences are described here.

[0066] Optionally, refer to Figures 8-9 In order to achieve the rotatable connection between the connecting plate 21 and the cabinet 1, the connecting plate 21 is rotatably connected to the cabinet 1 through the hinge 24. The arc relief device 2 also includes a baffle 25 set on the top edge of the cabinet 1 and corresponding to the connecting plate 21. The baffle 25 abuts against the outer side of the corresponding connecting plate 21 so that the connecting plate 21 remains tilted.

[0067] The baffle 25 was designed to allow the connecting plate 21 to be tilted, and the baffle 25 can also seal the gap between the connecting plate 21 and the cabinet 1 to prevent arcing particles from overflowing from the gap.

[0068] It is understandable that the baffle 25 can be customized according to the total width of the combined first cabinet 11 and / or second cabinet 12, or it can be designed separately according to the width of the first cabinet 11 or the second cabinet 12. There is no limitation here.

[0069] Specifically, the baffle 25 includes a connecting part 251 and an arc-shaped part 252. The connecting part 251 is connected to the top of the cabinet 1, and the arc-shaped part 252 can abut against the outer side of the connecting plate 21. The connecting part 251 is provided with a fifth mounting hole 2511 (which can be a through hole), and the top of the cabinet 1 is provided with a second connecting hole (which can be a threaded hole) corresponding to the fifth mounting hole 2511. The connecting part 251 is inserted into the fifth mounting hole 2511 and the second connecting hole through a fourth connector (which can be a screw) to achieve the connection between the connecting part 251 and the cabinet 1. The arc-shaped part 252 is arc-shaped, which can limit the maximum angle of the connecting plate 21 and at the same time seal the gap between the connecting plate 21 and the cabinet 1.

[0070] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. Switchgear, characterized in that include: Cabinet (1); The arc relief device (2) includes multiple interconnected connecting plates (21) surrounding the top edge of the cabinet (1). The lower end of the connecting plate (21) is detachably or rotatably connected to the top of the cabinet (1). Any two adjacent connecting plates (21) are detachably connected. Each connecting plate (21) is inclined outward so that the multiple connecting plates (21) form a funnel-shaped arc channel.

2. Switchgear according to claim 1, characterized in that The lower end of the connecting plate (21) is provided with a first lower folding plate (211), the first lower folding plate (211) is provided with a first mounting hole (2111), and the top of the cabinet (1) is provided with a first connecting hole corresponding to the first mounting hole (2111). The arc relief device (2) further includes a first connector corresponding to the first mounting hole (2111). The first connector is used to pass through the first mounting hole (2111) and the first connecting hole to connect the first lower folding plate (211) and the cabinet (1).

3. Switchgear according to claim 1, characterized in that The connecting plate (21) is rotatably connected to the cabinet (1) via a hinge (24); The arc relief device (2) further includes a baffle (25) disposed on the top edge of the cabinet (1) and corresponding to the connecting plate (21). The baffle (25) abuts against the outer side of the corresponding connecting plate (21) so that the connecting plate (21) remains tilted.

4. Switchgear according to claim 3, characterized in that The baffle (25) includes a connecting part (251) and an arc part (252). The connecting part (251) is used to connect to the top of the cabinet (1), and the arc part (252) is used to abut against the outer side of the connecting plate (21).

5. Switchgear cabinet according to claim 2 or 3, characterized in that The connecting plate (21) is provided with side folding plates (212) at both ends, and the side folding plates (212) are provided with second mounting holes (2121); The arc relief device (2) further includes a second connector, which is used to pass through the second mounting hole (2121) on two adjacent side folding plates (212) to connect the two adjacent connecting plates (21).

6. Switchgear according to claim 5, characterized in that In the connecting plates (21) located on the wide side of the cabinet (1), any two adjacent connecting plates (21) are connected to the cabinet (1) by a pull rope structure (23). One end of the pull rope structure (23) is connected to two adjacent side folding plates (212) on the corresponding two connecting plates (21), and the other end is connected to the top of the cabinet (1).

7. The switch cabinet according to claim 6, characterized in that, The side folding plate (212) is also provided with a third mounting hole (2122); The pull rope structure (23) includes a steel wire rope (231), a connecting pin (232), and a lifting ring (233). The lifting ring (233) is located at the top of the cabinet (1). The connecting pin (232) passes through the third mounting hole (2122) on two adjacent side folding plates (212). The steel wire rope (231) is connected to the lifting ring (233) and the connecting pin (232).

8. The switch cabinet according to claim 7, characterized in that, The wire rope (231) is threaded through the lifting ring (233) to form a double rope, and the end of the double rope away from the lifting ring (233) is connected to the connecting pin (232).

9. The switchgear according to claim 1, characterized in that, The connecting plate (21) is provided with an upper folding plate (213) at the end away from the cabinet (1), and the upper folding plate (213) is bent toward the arc channel.

10. The switchgear according to claim 1, characterized in that, The cabinet (1) includes a first cabinet (11) and a second cabinet (12) connected side by side along the width direction of the cabinet (1). At least one of the first cabinet (11) and the second cabinet (12) is provided. Along the depth direction of the cabinet (1), the depth dimension of the first cabinet (11) is smaller than the depth dimension of the second cabinet (12). The adjacent first cabinet (11) and second cabinet (12) are connected by a splicing plate (22) between the connecting plate (21) at the rear end of the first cabinet (11) and the connecting plate (21) at the rear end of the second cabinet (12); or, the adjacent first cabinet (11) and second cabinet (12) are connected by a splicing plate (22) between the connecting plate (21) at the front end of the first cabinet (11) and the connecting plate (21) at the front end of the second cabinet (12).

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