CN106058506A - Bus conductive structure - Google Patents

Abstract

The invention relates to a bus conductive structure. The bus conductive structure comprises at least one connection busbar set; each connection busbar set comprises at least two connection busbars, which are distributed along the circumferential direction; a busbar connection structure electrically connected with a bus and/or a conductive part is arranged at the end part of each connection busbar; a manner that more than two connection busbars are jointed is adopted; because of the current skin effect, namely lower current of high-frequency current is concentrated on the surface of a conductor to flow and the current in the middle of the conductor is very weak, the current can flow through the surface of the connection busbar; compared with the solid connection busbar adopted in the prior art, the bus conductive structure disclosed by the invention has the benefits that: the use amount of the connection busbars is reduced under the condition that the section area of the bus is unnecessary to change; simultaneously, the flow area of the connection busbars is increased; and the current-carrying capability of the circuit is greatly improved.

Description

A busbar conductive structure

technical field

The invention relates to a conductive structure of a busbar.

Background technique

Due to the limitation of the volume of the switchgear in the existing high-current metal-enclosed switchgear, the connecting busbars are used to connect the busbars. The copper bars commonly used for connecting the busbars are difficult to effectively improve without increasing the copper consumption of the connecting busbars. The current carrying capacity of the switchgear. At present, when domestic enterprises design switch cabinets, in order to improve the current carrying capacity of their circuits, they adopt the method of increasing the amount of copper connected to the busbar, but the amount of copper connected to the busbar is increased. Due to the requirements of the connection relationship, it is necessary to increase the busbar cross-sectional area, resulting in an increase in manufacturing costs.

Contents of the invention

The object of the present invention is to provide a conductive structure of a bus bar that can increase the current-carrying capacity without increasing the cross-sectional area of the bus bar.

In order to achieve the above object, the technical solution of a busbar conductive structure in the present invention is: a busbar conductive structure, including at least one connecting busbar group, each connecting busbar group includes at least two connecting busbars distributed along the circumferential direction , the end of each connected busbar is provided with a busbar connection structure for electrical connection with the busbar and/or conductive parts.

The connecting busbar groups are divided into two groups, including inner layer connecting busbar groups and outer layer connecting busbar groups arranged radially.

Both the inner layer connecting busbar group and the outer layer connecting busbar group include six connecting busbars and form a regular hexagonal column structure along the circumference.

The extension line of one side of the inner-layer connecting busbar group intersects with two corresponding adjacent sides of the outer-layer connecting busbar group.

The busbar conductive structure also includes a busbar connection conductor, and the busbar connection conductor includes a circuit busbar connection end for electrical connection with the circuit busbar and a switchgear busbar connection end for electrical connection with the switchgear busbar, the circuit busbar connection end and At least one of the connection ends of the switch cabinet busbars is provided with a connection surface for electrical connection with the corresponding connecting busbar group.

At least one of the connection ends of the circuit bus bar and the switch cabinet bus bar is provided with a columnar structure or a stepped shaft structure composed of two or more columnar structures, and the side or end surface of the columnar structure forms the connection surface .

The cross-sections of the columnar structures are regular hexagonal structures, and the side faces of the regular hexagonal structures form the connection surfaces.

The stepped shaft structure includes a large-diameter section and a small-diameter section arranged concentrically. The cross-sections of the large-diameter section and the small-diameter section are regular hexagonal structures, and the extension line of one side of the small-diameter section is adjacent to the corresponding one on the large-diameter section. The two sides intersect.

The bus bar connection conductor also includes at least one component connection end for electrical connection with components of the switch cabinet.

The busbar connecting conductor is rotatably sleeved and electrically connected with a busbar hoop. The busbar hoop has a hoop current output end for electrical connection with components of the switch cabinet, and the hoop current output end forms the connection of the components. end.

The beneficial effects of the present invention are: the conductive structure of the busbar includes at least one connecting busbar group, each connecting busbar group includes at least two connecting busbars distributed along the The skin effect (under high-frequency current, the current will concentrate on the surface of the conductor and the current in the middle of the conductor is very weak) the current will pass through the surface of the connecting busbar, compared with the solid connecting busbar used in the prior art Said that the present invention reduces the consumption of connecting busbars without changing the cross-sectional area of busbars, increases the flow area of connecting busbars, and greatly improves the current-carrying capacity of the circuit.

Description of drawings

Fig. 1 is a structural schematic diagram of Embodiment 1 of a bus conductive structure of the present invention;

Fig. 2 is the sectional view of A-A place in Fig. 1;

Fig. 3 is a structural schematic diagram of Embodiment 2 of a bus conductive structure of the present invention;

Fig. 4 is the sectional view of B-B place among Fig. 3;

Fig. 5 is a structural schematic diagram of Embodiment 3 of a bus conductive structure of the present invention;

Fig. 6 is the sectional view of C-C place in Fig. 5;

Fig. 7 is a structural schematic diagram of the connecting conductor of the bus bar;

Fig. 8 is a schematic structural diagram of the intermediate conductor in Fig. 1;

Fig. 9 is a schematic structural diagram of the intermediate conductor in Fig. 3;

FIG. 10 is a schematic structural diagram of the intermediate conductor in FIG. 5 .

detailed description

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings. A specific embodiment of a bus conductive structure of the present invention, as shown in Figures 1 to 6, includes a circuit bus connection conductor 3 with one end electrically connected to the circuit bus, and a switch cabinet bus connection conductor 4 with one end electrically connected to the switch cabinet bus , the intermediate conductor 5 electrically connected to the circuit bus connection conductor 3 and the switch cabinet bus connection conductor 4 at both ends and the connection busbar group (6, 10) for conducting current, the circuit bus connection conductor 3 and the switch cabinet bus connection The conductors 4 are collectively referred to as bus connection conductors, and the bus connection conductors are also called conductive parts. The circuit bus connection conductor 3 is set in the circuit bus casing 1 for fixing, and the switch cabinet bus connection conductor 4 is set in the switch cabinet bus casing 2. Fixing, the structure of the circuit bus connection conductor 3 and the switch cabinet bus connection conductor 4 is the same, taking the circuit bus connection conductor 3 as an example, the circuit bus connection conductor 3 includes a regular hexagonal column formed by two sets of coaxial lines at one end. The stepped shaft structure 11, the other end is provided with a connecting jack for electrical connection with the circuit bus for plugging and unplugging cooperation with the circuit bus, the circuit bus connection conductor 3 passes through the circuit bus bushing 1 to be fixed, the switch cabinet bus connection conductor 4 The difference from the circuit bus connection conductor 3 is that the other end of the switch cabinet bus connection conductor 4 is a connection jack for the electrical connection of the switch cabinet bus and is plugged and matched with the switch cabinet bus, and the switch cabinet bus connection conductor 4 passes through the switch cabinet bus sleeve Tube 2 is fixed. The stepped shaft structure 11 includes a large-diameter section and a small-diameter section arranged concentrically. The cross-sections of the large-diameter section and the small-diameter section are both regular hexagonal structures. The connecting busbar group includes the outer layer connecting busbar group 6 connected to the large-diameter section and The inner layer connection busbar group 10 connected by the small diameter section. The connecting busbar groups (6, 10) all include six connecting busbars and are distributed along the circumferential direction. Each side 14 of the above-mentioned regular hexagonal column is a connecting surface for contacting and electrically connecting with the corresponding connecting busbars. Each connecting busbar The ends of the rows are all provided with connecting structures, the connecting structures include busbar screw holes arranged on the connecting busbars, conductor screw holes 15 are arranged on the connecting surface corresponding to the busbar screw holes, and the connecting busbars are connected by fastening screws 7 .

In Embodiment 1, as shown in Figures 1, 2, and 8, the intermediate conductor 5 has two ends that are respectively connected to the circuit bus connecting conductor 3 with a stepped shaft structure that is electrically connected to the connecting bus bar group (6, 10). The terminal 16 and the stepped shaft structure connected to the switch cabinet busbar connection conductor 4 are electrically connected to the switch cabinet busbar connection end 17 through the connecting busbar group (6, 10), and the circuit bus connection end 16 and the switch cabinet busbar connection end 17 are provided with A stepped shaft structure composed of two coaxial regular hexagonal columns. Screw holes are provided on each side of each of the above-mentioned regular hexagonal columns for screw connection with corresponding connecting busbars. The intermediate conductor 5 is rotatably assembled and electrically connected with a busbar hoop 8. The busbar hoop 8 is a symmetrical split structure connected by bolts. The busbar hoop 8 has a hoop current output terminal for outputting current. The current output end forms a connection joint, that is, the component connection end is used to electrically connect with the components in the switch cabinet. Since this connection joint can be rotated, it can be easily connected to the busbar 9 and the components in the switch cabinet through the hoop. connect. The components of the switchgear are also called conductive parts.

In the second embodiment, as shown in Figures 3, 4, and 9, the intermediate conductor 5 has three ends that are respectively connected to the circuit bus with a stepped shaft structure connected to the circuit bus connecting conductor 3 through the connecting bus bar group (6, 10). Terminal 16, the stepped shaft structure of the conductor 4 connected to the busbar of the switchgear is electrically connected to the busbar group (6, 10) of the switchgear, and the busbar connection terminal 17 of the switchgear is electrically connected to the components of the switchgear through the busbar group The component connection end 18, the circuit bus connection end 16, the switch cabinet bus connection end 17 and the component connection end 18 are all provided with a stepped shaft structure composed of two regular hexagonal columns. Screw holes are provided on each side of the above-mentioned regular hexagonal columns for screw connection with corresponding connecting busbar groups (6, 10). The components of the switchgear are also called conductive parts.

In the third embodiment, as shown in Figures 5, 6, and 10, the intermediate conductor 5 has four ends that are respectively connected to the circuit bus in a stepped shaft structure connected to the circuit bus connecting conductor 3 through the connecting bus bar group (6, 10). Terminal 16, the stepped shaft structure of the conductor 4 connected to the busbar of the switchgear is electrically connected to the busbar group (6, 10) of the switchgear, and the busbar connection terminal 17 of the switchgear is electrically connected to the components of the switchgear through the busbar group The first component connection end 19 and the second component connection end 20, the circuit bus connection end 16, the switch cabinet bus connection end 17, the first component connection end 19 and the second component connection end 20 are provided with two A stepped shaft structure composed of regular hexagonal columns. Screw holes are provided on each side of each of the above-mentioned regular hexagonal columns for screw connection with corresponding connecting busbars. The components of the switchgear are also called conductive parts.

In other embodiments of the present invention, the stepped shaft structure can also be replaced by a regular hexagonal column. At this time, there is only one group of connecting busbars; it is also possible to set more than three sections of stepped shaft structure. At this time, there are three groups of connecting busbars. ;The regular hexagonal column can also be replaced by the regular pentagonal column, and the number of sides of the square column can be adjusted according to the actual situation; The cross section of the small diameter section is a regular hexagon; one side of the inner connecting busbar group can also be parallel to the corresponding side on the outer connecting busbar group; when there is no need to electrically connect the components in the switch cabinet When only conducting the busbars at both ends, the intermediate conductor may not be provided; the two ends of the circuit busbar connection conductor and/or the switchgear busbar connection conductor may both be a stepped shaft structure composed of two regular hexagonal columns. The side of each regular hexagonal column is provided with a screw hole for the corresponding connection busbar to contact and electrically connect; the connection mode between the connection busbar and the connection surface can also be conductively connected by conductive adhesive bonding or welding; The hexagonal column can also be replaced by a cylinder. At this time, the end surface of the cylinder forms a connecting surface for electrical connection with the connecting busbar. At this time, the structure of the connecting busbar can be L-shaped, and the L-shaped flange is used for connecting with the cylinder. The end face is contacted and electrically connected; the connecting face can also be formed by the end face of the regular hexagonal column structure. At this time, the structure of the connecting busbar can be L-shaped, and the L-shaped folded edge is used for contacting electrical connection with the end face of the regular hexagonal column; It is also possible not to set the busbar connection conductor, but to make the end of the busbar into a regular hexagonal column structure or a stepped shaft structure formed by two regular hexagonal column structures. At this time, each connecting busbar is directly conductively connected to the busbar.

Claims (10)

1. a bus conductive structure, it is characterised in that: include that at least one connects busbar group, each connect busbar group all include to The connection busbar that few two panels is along the circumferential direction distributed, the every end connecting busbar is provided with for electric with bus and/or electric-conductor The busbar attachment structure connected.

A kind of bus conductive structure the most according to claim 1, it is characterised in that: described connection busbar group is two groups, bag Include the internal layer being disposed radially and connect busbar group and outer layer connection busbar group.

A kind of bus conductive structure the most according to claim 2, it is characterised in that: described internal layer connects busbar group and outer layer Connect busbar group and all include that six connect busbar and circumferentially surround positive hexagonal prism structure.

A kind of bus conductive structure the most according to claim 3, it is characterised in that: described internal layer connects of busbar group Two sides that the extended line of side connects the correspondence in busbar group adjacent with outer layer are intersected.

A kind of bus conductive structure the most according to claim 1, it is characterised in that: described bus conductive structure also includes mother Line connect conductor, bus connection conductor include for the circuit busbar electrically connected with circuit busbar be connected end and for switch cubicle The switch cabinet bus of bus electrical connection connects end, and described circuit busbar connects end and switch cabinet bus connects at least one in end Connect and be provided with on end for connecting, with corresponding, the joint face that busbar group electrically connects.

A kind of bus conductive structure the most according to claim 5, it is characterised in that: described circuit busbar connects end and switch It is provided with column structure at least one connection end in cabinet bus connection end or is provided with by plural column structure The multidiameter structure of composition, the side of column structure or end face form described joint face.

A kind of bus conductive structure the most according to claim 6, it is characterised in that: the cross section of described column structure is just Hexagonal structure, the side of regular hexagon structure forms described joint face.

A kind of bus conductive structure the most according to claim 6, it is characterised in that: described multidiameter structure includes setting with one heart The big footpath section put and path section, the cross section of big footpath section and path section is regular hexagon structure, a side of described path section Extended line two sides adjacent with the correspondence in the section of big footpath intersect.

9. according to a kind of bus conductive structure described in any one of claim 5-8, it is characterised in that: described bus connection conductor Also include that at least one is connected end for the components and parts electrically connected with the components and parts of switch cubicle.

A kind of bus conductive structure the most according to claim 9, it is characterised in that: rotate on described bus connection conductor Sheathed and be electrically connected with bus anchor ear, bus anchor ear have one defeated for the anchor ear electric current that electrically connects with the components and parts of switch cubicle Going out end, anchor ear current output terminal forms described components and parts and connects end.