Bus for switch cabinet and switch cabinet

Abstract

The utility model provides a bus for a switch cabinet and the switch cabinet. The bus comprises a tubular body; the at least one lap joint part is located at one end of the tubular body, the lap joint part comprises two clamping pieces, each clamping piece is provided with a flat plate, the two flat plates are oppositely arranged and are spaced, a conductor can be inserted between the two flat plates and fixed to the lap joint part, and the tubular body and the lap joint part are integrally formed. According to the utility model, the two flat plates are arranged at the end part of the tubular body to realize connection with the conductor, so that the contact area between the bus and the conductor can be increased by the double-layer connection mode, and furthermore, relatively large current can be borne without occupying other space.

Description

Technical Field

[0001] This utility model relates to the field of switchgear, and in particular to busbars and switchgear for switchgear. Background Technology

[0002] Medium-voltage switchgear is an important piece of equipment in power systems. Its main function is to switch, control, and protect electrical equipment during power generation, transmission, distribution, and energy conversion. Medium-voltage switchgear includes busbars, which are current conductors typically used for collecting and distributing power.

[0003] In order to carry a large current, the two busbars need to have a certain contact area when connected. Utility Model Content

[0004] In view of this, the present invention proposes a busbar for a switchgear, the busbar comprising:

[0005] tubular body;

[0006] At least one overlap is located at one end of the tubular body. The overlap includes two clamps, each of which has a flat plate. The two flat plates are arranged opposite each other and spaced apart. A conductor can be inserted between the two flat plates and fixed to the overlap. The tubular body and the overlap are integrally formed.

[0007] Because this utility model has two flat plates at the end of the tubular body to connect with the conductor, this double-layer connection method can increase the contact area between the busbar and the conductor, thereby enabling it to carry a larger current, and without occupying other space.

[0008] Optionally, based on the busbar described above, the clamping member further includes an arc-shaped transition portion connecting the plate and the tubular body; and / or the plate has a chamfer. This prevents tip discharge.

[0009] Optionally, based on the busbar described above, the width of the flat plate is greater than the diameter of the tubular body; and / or the spacing is less than the diameter of the tubular body. This further satisfies the requirement to increase the contact area.

[0010] Optionally, based on the busbar described above, the tubular body is provided with several heat dissipation holes. This arrangement allows air convection, facilitating heat dissipation.

[0011] Optionally, based on the busbar described above, the tubular body has two rows of heat dissipation holes arranged symmetrically, with each row of holes located on the same straight line.

[0012] Optionally, based on the busbar described above, the two symmetrically arranged heat dissipation holes have the same axis, and the axis is perpendicular to the ground. This is more conducive to the flow of hot air.

[0013] Optionally, the plate is provided with connection holes according to the busbar described above.

[0014] Optionally, based on the busbar described above, there are two overlapping portions, respectively located at both ends of the tubular body. This allows for selection of which overlapping portion to use for connection based on actual needs, or simultaneous connection at both ends.

[0015] This utility model also provides a switch cabinet, including a busbar for a switch cabinet as described in any of the preceding claims.

[0016] Optionally, according to the switch cabinet described above, the switch cabinet further includes a conductor, the conductor comprising a tubular conductor and at least one fixing part, the fixing part being located at one end of the tubular conductor, the fixing part having one or two connectors, the structure of the connectors being the same as that of the clamping member. Attached Figure Description

[0017] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can more clearly understand the above and other features and advantages of the present invention, in which:

[0018] Figure 1 This is a schematic diagram of one side of a busbar for a switch cabinet according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the other side of the busbar for a switch cabinet according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the connection between the busbar and the conductor according to this utility model.

[0021] Figure 4 This is an enlarged structural schematic diagram of the connection between the busbar and the conductor according to the present invention.

[0022] The reference numerals in the attached figures are as follows:

[0023] 1-Tubular body

[0024] 11- Heat dissipation holes

[0025] 12-Threaded Hole

[0026] 2-Clamping component

[0027] 21-Plate

[0028] 211-Connecting hole

[0029] 22-Arc-shaped transition section

[0030] 3-Tube conductor

[0031] 4-Connector

[0032] 41-plate-shaped body

[0033] 411-Mounting Hole

[0034] 42-Arc-shaped connection part Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the following embodiments are provided to further illustrate this utility model in detail. The nouns and pronouns referring to "person" in this patent application are not limited to specific genders.

[0036] In order to achieve a larger contact area in a smaller space, the inventors came up with the idea of ​​providing a new type of busbar.

[0037] like Figures 1 to 4 As shown, the busbar for switchgear of this utility model includes a tubular body 1 and at least one overlapping portion.

[0038] The tubular body 1 can be made of copper tubing and is hollow inside, allowing gas to flow through. The tubular body 1 can have corresponding holes for connection to other components. For example, as... Figure 3 As shown, the tubular body 1 is provided with a threaded hole 12, which is used to connect with a through-wall sleeve.

[0039] The overlapping portion is located at one end of the tubular body 1. This overlapping portion includes two clamping members 2, each with a flat plate 21. The two flat plates 21 are arranged opposite each other and spaced apart. A conductor can be inserted between the two flat plates 21 and fixed to the overlapping portion. The tubular body 1 and the overlapping portion are integrally formed. The conductor here can be a busbar, specifically a branch busbar, or other conductive devices, such as connecting components, etc., which will not be elaborated further. Figures 1 to 4 The diagram shows a case with two overlapping portions. In practical applications, there may be only one overlapping portion, or only one overlapping portion with the above-described structure. The other end of the tubular body 1 may use an overlapping portion with other structures, and there is no specific limitation. As an example, in use, one end of the conductor can extend between the two plates 21 and be fixed to the conductor by a fastener.

[0040] Specifically, the plate 21 is provided with a connection hole 211, and the conductor can also be provided with a corresponding mounting hole 411. Workers can use bolts to pass through the connection hole 211 and the mounting hole 411 to fix the plate 21 to the conductor. This fixing method is simple, convenient, and low in cost.

[0041] The busbar can be integrally molded, with the busbar body and overlapping parts formed through appropriate processing techniques. This structure not only saves installation steps but also helps reduce the skin effect.

[0042] Optionally, such as Figure 4 As shown, the plate 21 has a chamfer. To avoid tip discharge and ensure good overall insulation performance, the plate 21 in this invention has a chamfer to make the edges or corners smooth.

[0043] In this invention, two flat plates 21 are provided at the end of the tubular body 1 to connect with the conductor. This double-layer connection method can increase the contact area between the busbar and the conductor, thereby enabling it to carry a larger current without occupying other space.

[0044] Optionally, the clamping member 2 further includes an arc-shaped transition portion 22, which connects the flat plate 21 and the tubular body 1. Figure 1 , Figure 3 and Figure 4 As shown, an arc-shaped structure is used for the transition between the clamping member 2 and the tubular body 1. From Figure 2 As can be seen, the end of the clamping member 2 furthest from the tubular body 1 is a flat plate 21, and the arc-shaped transition portion 22 of the clamping member 2 near the tubular body 1 has a rounded transition, which can prevent tip discharge. The two arc-shaped transition portions 22 gradually move closer to the middle in the axial direction, so that the distance between the two flat plates 21 connected to the arc-shaped transition portions 22 is smaller than the diameter of the tubular body 1, achieving the required distance. Of course, it can also be as follows: Figure 2 As shown, the arc-shaped transition portion 22 gradually expands outward in the radial direction, making the width of the two flat plates 21 greater than the diameter of the tubular body 1. This further satisfies the requirement to increase the contact area. There can also be a gap between the arc-shaped transition portions 22, which can be set according to actual needs, and will not be elaborated here.

[0045] Optionally, the tubular body 1 is provided with several heat dissipation holes 11. When the switchgear is in operation, the busbar generates a large amount of heat. Providing heat dissipation holes 11 on the tubular body 1 helps to dissipate heat from the busbar. More specifically, the tubular body 1 has two rows of heat dissipation holes 11, and the two rows of heat dissipation holes 11 are symmetrically arranged, with each row of heat dissipation holes 11 located on the same straight line. This arrangement allows for air convection, further facilitating heat dissipation. When installing and using this busbar, it can be... Figure 2 and Figure 3 As shown, the two symmetrically arranged heat dissipation holes 11 have the same axis and the axis is perpendicular to the ground, so that the two rows of heat dissipation holes 11 are arranged vertically. Since hot air flows from bottom to top, arranging the heat dissipation holes 11 in two symmetrical vertical rows is more conducive to the flow of hot air.

[0046] Optionally, such as Figures 1 to 3 As shown, there are two overlapping portions, which are respectively located at both ends of the tubular body 1. In this way, it is possible to choose which end of the overlapping portion to use for connection according to actual needs, or to connect both ends simultaneously.

[0047] This utility model also provides a switch cabinet, which includes the busbar of any of the foregoing examples. Optionally, the switch cabinet also includes the aforementioned conductor, which includes a tubular conductor 3 and a fixing part. The conductor can be another busbar, whose structure can be the same as the structure of the aforementioned busbar, for example, also having a tubular conductor 3 and at least one fixing part, the fixing part being located at one end of the tubular conductor 3, and the fixing part having one or two connectors 4, the structure of the connectors 4 being the same as the clamping member 2. For ease of distinction, as Figure 3 and Figure 4 As shown, the plate-shaped body 41 of the connector 4 corresponds to the flat plate 21 of the clamping member 2, and the arc-shaped connecting part 42 of the connector 4 corresponds to the arc-shaped transition part 22 of the clamping member 2. The tubular conductor 3 can also be a hollow copper tube.

[0048] Specifically, the tubular conductor 3 can have the same structure as the aforementioned tubular body 1, and has heat dissipation holes 11. Of course, if the tubular conductor 3 is intended to be installed perpendicular to the bottom surface, heat dissipation holes may not be provided on the tubular conductor 3, thus avoiding the possibility that improper placement of heat dissipation holes may affect the heat dissipation effect. Figure 3 and Figure 4 This illustrates a case where the tubular conductor 3 does not have heat dissipation holes. The fixing part here may include a connector 4, for example, one or two connectors 4, which are disposed at the end of the tubular conductor 3. Specifically, the structure of the connector 4 is the same as that of the aforementioned clamping member 2. Figure 3 and Figure 4 The diagram shows a case where the fixing part has two connectors 4, which can further increase the contact area and carry a larger current.

[0049] As an example, Figure 1 and Figure 2 The busbar in the diagram can be the main busbar, i.e. Figure 3 The horizontally arranged busbars are the main busbars. Figure 3 The vertically arranged busbars in the middle can be branch busbars.

[0050] In addition, such as Figure 3 and Figure 4 As shown, the connector 4 of the fixing part is also provided with mounting holes 411. Multiple mounting holes 411 can be provided, such as... Figure 3 It has four mounting holes 411, which allows multiple busbars to be connected as needed, for example... Figure 3 As shown, the connector 4 of the fixing part has two mounting holes 411 that do not correspond to the connection hole 211, which can be used to fix it together with the connection hole 211 of another busbar.

[0051] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A busbar for switchgear, characterized in that, The busbar includes: Tubular body(1); At least one overlap is located at one end of the tubular body (1). The overlap includes two clamps (2), each of which has a plate (21). The two plates (21) are arranged opposite each other and have a gap. A conductor can be inserted between the two plates (21) and fixed to the overlap. The tubular body (1) and the overlap are integrally formed.

2. The busbar according to claim 1, characterized in that, The clamping member (2) further includes an arc-shaped transition portion (22) connected between the flat plate (21) and the tubular body (1); and / or The flat plate (21) has a chamfer.

3. The busbar according to claim 1, characterized in that, The width of the plate (21) is greater than the diameter of the tubular body (1); and / or The spacing is smaller than the diameter of the tubular body (1).

4. The busbar according to claim 1, characterized in that, The tubular body (1) is provided with several heat dissipation holes (11).

5. The busbar according to claim 4, characterized in that, The tubular body (1) has two rows of heat dissipation holes (11) and the two rows of heat dissipation holes (11) are symmetrically arranged, with each row of heat dissipation holes (11) located on the same straight line.

6. The busbar according to claim 5, characterized in that, The two symmetrically arranged heat dissipation holes (11) have the same axis and the axis is perpendicular to the ground.

7. The busbar according to claim 1, characterized in that, The plate (21) is provided with a connection hole (211).

8. The busbar according to any one of claims 1-5, characterized in that, There are two overlapping parts, which are respectively located at both ends of the tubular body (1).

9. A switch cabinet, characterized in that, Includes the busbar for switchgear as described in any one of claims 1-8.

10. The switchgear according to claim 9, characterized in that, The switch cabinet also includes a conductor, which includes a tubular conductor (3) and at least one fixing part. The fixing part is located at one end of the tubular conductor (3) and has one or two connectors (4). The structure of the connectors (4) is the same as that of the clamping member (2).

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