Switch cabinet
By designing the main grounding and branching structure in the grounding circuit of the switch cabinet, the problems of ablation and destructive breaking of the grounding circuit in the short circuit fault of the grounding switch are solved, and the effect of improving the dynamic stability of the grounding circuit is achieved.
Patent Information
- Application Number
- CN202421395676.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-18
AI Technical Summary
The grounding circuit of the switch cabinet is prone to ablation and destructive breakage when the grounding switch is short-circuited, resulting in damage to the grounding circuit.
A ground circuit including a main grounding structure and a branching structure is designed. The main grounding structure improves the dynamic stability of the fixed block and reduces the ablation of the channel steel by providing fixed blocks and fasteners on the channel steel.
It effectively improves the dynamic stability of the ground circuit, prevents damage to the ground circuit when the ground switch is short-circuit failure, and reduces the risk of ablation and circuit breaking.
Smart Images
Figure CN222691150U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of power equipment, and in particular to a switch cabinet. Background Art
[0002] Switchgear is widely used in the power distribution system of power grid, mainly for switching, controlling and protecting power transmission and distribution.
[0003] The switch cabinet usually includes a cabinet body, in which various electrical components are installed, such as circuit breaker switches, three-position switches, grounding switches, etc. The grounding switch is usually connected to the grounding loop to lead the current to the ground. The grounding loop is set at the bottom of the cabinet body.
[0004] When a short circuit occurs in the grounding switch of the switch cabinet, the fixed channel steel of the main ground bar structure of the grounding loop is very likely to be burned out. In severe cases, the fixed channel steel may even be burned out, causing damage to the grounding loop or destructive circuit breaking. Utility Model Content
[0005] In order to solve the problem in the related art that the grounding circuit of the switch cabinet is damaged or destructively disconnected due to the short circuit of the grounding switch, the present disclosure provides a switch cabinet that can effectively improve the dynamic stability of the grounding circuit structure and prevent damage to the grounding circuit when a short circuit fault occurs in the grounding switch.
[0006] The present disclosure provides a switch cabinet, comprising:
[0007] Cabinet;
[0008] A grounding switch, which is arranged in the cabinet;
[0009] The grounding loop is arranged in the cable room of the cabinet, and includes:
[0010] A main ground row structure, comprising a channel steel arranged along the depth direction of the cabinet, a fixing block arranged at one end of the channel steel and fixedly connected to the channel steel, a first main row arranged above the fixing block and connected to the fixing block, and a second main row connected to the first main row; the first main row extends along the width direction of the cabinet, the second main row extends along the depth direction of the cabinet and extends from one end of the channel steel to the other end of the channel steel; the fixing block comprises a main body and a raised portion extending upward from the main body, the width of the main body is greater than the width of the raised portion, the main body is located and fixed in the groove of the channel steel, and the two side surfaces of the main body are in contact with the inner walls of the two side plates of the channel steel; and
[0011] A branch row structure, comprising a first branch row and a second branch row connected to the first branch row, wherein the first branch row is connected to the second main row at another end different from the other end connected to the first main row, and the first branch row extends along the height direction of the cabinet, the second branch row extends along the width direction of the cabinet, and the second branch row is electrically connected to the grounding switch.
[0012] Optionally, the middle portion of the first branch row is fixed to the inner wall of the cabinet by fasteners.
[0013] Optionally, the middle portion of the first branch row has at least three fixing points.
[0014] Optionally, the cross-sectional width of the main body portion is equal to the width of the groove of the channel steel.
[0015] Optionally, the channel steel includes a channel bottom plate and side plates extending upward from both sides of the channel bottom plate, each of the side plates is provided with at least one connecting hole, and fasteners are passed through the connecting holes to connect the main body and the side plates to fix the fixing block to the channel steel.
[0016] Optionally, the width of the main body extends from one side plate of the channel steel to the other side plate of the channel steel.
[0017] Optionally, each of the side panels is provided with two connection holes.
[0018] Optionally, the fixing block is in a convex shape.
[0019] Optionally, the main ground row structure further includes another channel steel arranged in parallel with the channel steel, and the fixing block is arranged at one end of the other channel steel;
[0020] The fixing block is located at the same end of the two channel steels, and the first main row connects the two fixing blocks.
[0021] Optionally, both ends of the first main row protrude from the fixing block.
[0022] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:
[0023] The present disclosure provides a switch cabinet, which includes a cabinet body and a grounding switch and a grounding circuit arranged in the cabinet body. The grounding circuit is arranged in the cable room of the cabinet body. The grounding circuit includes a main grounding row structure and a branch row structure. The main grounding row structure includes a channel steel arranged along the depth direction of the cabinet body, a fixed block arranged at one end of the channel steel and fixedly connected to the channel steel, a first main row arranged above the fixed block and connected to the fixed block, and a second main row connected to the first main row. The first main row extends along the width direction of the cabinet body, and the second main row extends along the depth direction of the cabinet body and extends from one end of the channel steel to the other end of the channel steel. The fixed block includes a main body and a protrusion extending upward from the main body. The width of the main body is greater than the width of the protrusion. The main body is located and fixed in the groove of the channel steel, and the two side surfaces of the main body are in contact with the inner walls of the two side plates of the channel steel. The branch row structure includes a first branch row and a second branch row connected to the first branch row. The first branch row is connected to the second main row at a different end from the other end connected to the first main row, and the first branch row extends along the height direction of the cabinet body. The second branch row extends along the width direction of the cabinet, and the second branch row is electrically connected to the grounding switch. The present invention provides a fixed block at one end of the channel steel. Since the width of the main body is greater than the width of the protruding portion, and the main body is located and fixed in the groove of the channel steel, the bottom surface of the fixed block can fully contact the channel steel, thereby improving the dynamic stability of the fixed block in the channel steel. In addition, the two side surfaces of the main body are in contact with the inner walls of the two side plates of the channel steel, thereby reducing the phenomenon of the fixed block shaking left and right, further improving the dynamic stability of the fixed block, and improving the dynamic stability of the fixed block, thereby reducing the phenomenon of the channel steel being easily burned. Thus, the grounding circuit is effectively prevented from being damaged when a short circuit fault occurs in the grounding switch.
[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0026] Figure 1 The diagram is a schematic diagram of a switch cabinet with a grounding loop according to an exemplary embodiment.
[0027] Figure 2 yes Figure 1 A partial enlarged view of area A in the middle.
[0028] Figure 3 yes Figure 1 Schematic diagram of a partial structural cross-section.
[0029] Figure 4 yes Figure 3 A partial enlarged view of area C.
[0030] Figure 5 yes Figure 1 A partial enlarged view of area B in the middle. DETAILED DESCRIPTION
[0031] In order to further illustrate the principle and structure of the present disclosure, preferred embodiments of the present disclosure are now described in detail with reference to the accompanying drawings.
[0032] As mentioned above, the present disclosure provides a switch cabinet that can effectively improve the dynamic stability of the grounding loop structure and prevent the grounding loop from being damaged when a short circuit fault occurs in the grounding switch.
[0033] Specifically, Figure 1 As shown, the switch cabinet 100 includes a cabinet body 101 and electrical components such as a circuit breaker switch, a three-position switch, and a grounding switch (not shown) arranged in the cabinet body 101.
[0034] The grounding loop 10 is disposed in a cable room of a cabinet 101 , and includes a main grounding row structure 11 and a branching row structure 12 .
[0035] The main ground row structure 11 is arranged at the bottom of the cabinet 101, and includes a channel steel 111 arranged along the depth direction of the cabinet 101, a fixed block 112 arranged at one end of the channel steel 111 and fixedly connected to the channel steel 111, a first main row 113 arranged above the fixed block 112 and connected to the fixed block 112, and a second main row 114 connected to the first main row 113.
[0036] In some embodiments, the main ground row structure 11 includes two channel steels 111, the two channel steels 111 are parallel to each other, and a fixing block 112 is provided at one end of each channel steel 111. The fixing block 112 is located at the same end of the two channel steels 111. One end of the first main row 113 is connected to the fixing block 112 of one of the channel steels 111, and the other end is connected to the fixing block 112 on the other channel steel 111. In this way, the first main row 113 is electrically connected to the two channel steels 111 through the connection with the fixing block 112.
[0037] like Figure 2 As shown, the channel steel 111 is close to the bottom of the cabinet 101 and is located on both sides of the cabinet 101 in the depth direction, and is arranged close to the cabinet wall.
[0038] The channel steel 111 includes a channel bottom plate 1111 and side plates 1112 extending upward from both sides of the channel bottom plate 1111. Each side plate 1112 is provided with at least one connection hole for connecting the fixing block 112.
[0039] Further, if Figure 2 As shown, two connection holes are formed on each side plate 1112 for further strengthening the connection with the fixing block 112 .
[0040] Combination Figure 2 as well as Figure 3 , Figure 4 As shown, the channel steel 111 further includes a bending portion 11113, which is bent from the top of the side plate 1112 along the length direction toward the groove. The bending portion 1113 is provided on part of the side plate 1112, that is, the channel steel 111 at the position where the fixing block 112 is located is not provided with the bending portion 1113, so as to avoid the bending portion 1113 from interfering with the fixing plate 112.
[0041] The fixing block 112 includes a main body 1121 and a protrusion 1122 extending upward from the main body 1121. The width of the main body 1121 is greater than the width of the protrusion 1122, and the main body 1121 and the protrusion 1122 form a convex structure.
[0042] The main body 1121 is completely embedded in the groove of the channel steel 111, and the width of the main body 1121 extends from one side plate 1112 of the channel steel 111 to the other side plate 1112 of the channel steel 111, that is, the cross-sectional width of the main body 1121 is roughly equal to the width of the groove of the channel steel 111, that is, the main body 1121 fills the groove of the channel steel 111 in the width direction, so that the bottom surface of the main body 1121 can fully contact the groove bottom plate 1111 of the channel steel 111, thereby improving the dynamic stability of the fixed block 112. In addition, the two side surfaces of the main body 1121 are in contact with the inner walls of the two side plates 1112 of the channel steel 111, which can reduce the phenomenon of the fixed block 112 shaking left and right, and further improve the dynamic stability of the fixed block 112. The dynamic stability of the fixed block 112 is improved, and the phenomenon that the channel steel 111 is very easy to be ablated is reduced.
[0043] Two connecting holes are provided on both side plates 1112 of the channel steel 111. For each side plate 1112, two fasteners 1113 are respectively inserted into the two connecting holes to connect the main body 1121 and the side plate 1112, and fix the fixing plate 112 to the channel steel 111. Since the channel steel 111 and the fixing block 112 are fixed by arranging the fasteners 1113 on the side plate 1112, the firm connection of the fixing block 112 is further improved, thereby improving the dynamic stability of the fixing block 112. The dynamic stability of the fixing block 112 is improved, which can effectively reduce the arcing phenomenon and reduce the phenomenon that the channel steel is easily ablated due to poor dynamic stability. In this way, damage to the grounding circuit is effectively prevented.
[0044] The fastener 1113 may be a bolt, for example, an 8.8-grade M8*3 bolt.
[0045] The protrusion 1122 protrudes from the channel steel 111 to be connected to the first main row 113 .
[0046] like Figure 1As shown, the first main row 113 extends along the width direction of the cabinet 101. The two ends of the first main row 113 are respectively connected to the two fixing blocks 112 on the two channel steels 111. For example, the first main row 113 is connected to the protrusions 1122 of the fixing blocks 112 by bolts. Both ends of the first main row 113 protrude from the fixing blocks 112, that is, the ends of the first main row 113 slightly exceed the fixing blocks 112.
[0047] The second main row 114 extends along the depth direction of the cabinet 101 and extends from one end of the channel steel 111 to the other end of the channel steel 111. Specifically, one end of the second main row 114 is connected to the first main row 113 by fasteners such as bolts, and the other end connected to the first main row 113 is connected to the first branch row 121 of the branch row structure 12.
[0048] like Figure 5 As shown, the branch row structure 12 includes a first branch row 121 and a second branch row 122 connected to the first branch row 121. The first branch row 121 extends along the height direction of the cabinet, that is, the first branch row 121 extends upward from the connection with the second main row 114. The middle part of the first branch row 121 is fixed to the inner wall of the cabinet 101 by a fastener 123. The middle part of the first branch row 121 has at least three fixing points, that is, the middle part of the first branch row 121 is fixed to the cabinet 101 by a plurality of fasteners 123. For example, a plurality of convex holes are provided on the cabinet 101, and a plurality of fasteners 123 are inserted into these convex holes to fix the first branch row 121, so that these fasteners 123 form a plurality of supporting points, shorten the span between each fixing point, improve the firm connection between the first branch row 121 and the cabinet 101, avoid the first branch row 121 from shaking, etc., and thus improve the dynamic stability of the first branch row 121. The dynamic stability of the first branch row 121 is improved, which can effectively reduce arcing and reduce the ablation of the first branch row 121. Thus, the grounding loop is effectively prevented from being damaged.
[0049] The fastener 123 may be a bolt, for example, a 8.8-grade M8*6 bolt. The number of the fasteners 123 is three in this embodiment, but is not limited thereto, and the number of the fasteners 123 may be adjusted according to actual conditions.
[0050] The second branch bar 122 extends along the width direction of the cabinet, and the second branch bar 122 is electrically connected to the grounding switch, so that the current of the grounding switch flows to the grounding loop through the second branch bar 122 .
[0051] The above are only preferred feasible embodiments of the present disclosure and are not intended to limit the protection scope of the present disclosure. All equivalent structural changes made using the contents of the present disclosure and the drawings are included in the protection scope of the present disclosure.
Claims
1. A switch cabinet, characterized in that: include: Cabinet; A grounding switch, which is arranged in the cabinet; The grounding loop is arranged in the cable room of the cabinet, and includes: A main ground row structure, comprising a channel steel arranged along the depth direction of the cabinet, a fixing block arranged at one end of the channel steel and fixedly connected to the channel steel, a first main row arranged above the fixing block and connected to the fixing block, and a second main row connected to the first main row; the first main row extends along the width direction of the cabinet, the second main row extends along the depth direction of the cabinet and extends from one end of the channel steel to the other end of the channel steel; the fixing block comprises a main body and a raised portion extending upward from the main body, the width of the main body is greater than the width of the raised portion, the main body is located and fixed in the groove of the channel steel, and the two side surfaces of the main body are in contact with the inner walls of the two side plates of the channel steel; and A branch row structure, comprising a first branch row and a second branch row connected to the first branch row, wherein the first branch row is connected to the second main row at another end different from the other end connected to the first main row, and the first branch row extends along the height direction of the cabinet, the second branch row extends along the width direction of the cabinet, and the second branch row is electrically connected to the grounding switch.
2. The switch cabinet according to claim 1, characterized in that: The middle part of the first branch row is fixed to the inner wall of the cabinet through fasteners.
3. The switch cabinet according to claim 2, characterized in that: The middle portion of the first branch row has at least three fixing points.
4. The switch cabinet according to claim 1, characterized in that: The cross-sectional width of the main body portion is equal to the width of the groove of the channel steel.
5. The switch cabinet according to claim 1, characterized in that: The channel steel includes a channel bottom plate and side plates extending upward from both sides of the channel bottom plate. Each of the side plates is provided with at least one connecting hole. Fasteners are passed through the connecting holes to connect the main body and the side plates, thereby fixing the fixing block to the channel steel.
6. The switch cabinet according to claim 5, characterized in that: The width of the main body portion extends from one side plate of the channel steel to the other side plate of the channel steel.
7. The switch cabinet according to claim 5, characterized in that: Each of the side plates is provided with two connection holes.
8. The switch cabinet according to claim 1, characterized in that: The fixing block is in a convex shape.
9. The switch cabinet according to claim 1, characterized in that: The main ground row structure further includes another channel steel arranged in parallel with the channel steel, and one end of the other channel steel is provided with the fixing block; The fixing block is located at the same end of the two channel steels, and the first main row connects the two fixing blocks.
10. The switch cabinet according to claim 9, characterized in that: Both ends of the first main row protrude from the fixing block.