CN216355863U

CN216355863U - Bus system of low-voltage distribution equipment

Info

Publication number: CN216355863U
Application number: CN202122787717.3U
Authority: CN
Inventors: 袁高静; 黄尤东; 郭位坤; 于冀江
Original assignee: Guangdong Guangte Electric Co ltd
Current assignee: Guangdong Guangte Electric Co ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-04-19
Anticipated expiration: 2031-11-15

Abstract

A bus system of low-voltage distribution equipment comprises a switch cabinet frame and at least three-phase large bus groups; each phase of large bus bar group comprises at least two groups of small bus bar groups and at least two bus bar connecting pieces; each phase of small bus bar group comprises at least two horizontal main bus bars and at least one vertical branch bus bar; every two upper and lower adjacent horizontal main buses in the same phase and the same group are connected through the vertical branch bus; every two horizontal main buses which are adjacent horizontally and have the same phase and different groups are connected through the bus connecting piece; two sets of small bus bar groups are connected through the bus connecting piece, and each two sets of adjacent small bus bar groups are subjected to double splicing, and two horizontal main bus bars which are arranged in the same group are arranged along vertical intervals, and meanwhile, all the horizontal main bus bars are spliced to optimize the layout of a bus bar system, so that the air convection in the cabinet is increased, the heat dissipation performance of the bus bars is better, the utilization rate of the bus bars is also improved, and the using amount of copper bars is greatly reduced.

Description

Bus system of low-voltage distribution equipment

Technical Field

The utility model relates to the technical field of switch cabinets, in particular to a bus system of low-voltage distribution equipment.

Background

The switch cabinet is the indispensable controlgear among the power transmission and distribution equipment, and the switch cabinet is generally through main bus and grid connection, and the main bus of traditional switch cabinet generally sets up the method that many generating lines increase the sectional area through the stack and improves the current-carrying capacity to the demand of adaptation different specification electric currents, can fall the appearance and lead to the current-carrying capacity decay after the generating line stack sets up. The expansion efficiency of the current-carrying capacity of the main bus by arranging the plurality of buses in a superposed manner is not high, meanwhile, the buses are difficult to dissipate heat, the bus utilization rate is reduced, raw materials are wasted, the cost performance is low, and the production and manufacturing are increased.

SUMMERY OF THE UTILITY MODEL

In view of the shortcomings of the prior art, the present invention provides a bus bar system for low voltage power distribution equipment.

In order to achieve the above object, the present invention provides a bus system of a low voltage power distribution device, comprising a switch cabinet frame, at least four bus bar clamp devices and at least three-phase large bus bar groups, wherein the bus bar clamp devices are mounted on the switch cabinet frame; the three phases of the large bus bar groups are arranged along the transverse direction; each phase of large bus bar group comprises at least two groups of small bus bar groups and at least two bus bar connecting pieces; each phase of small bus bar group comprises at least two horizontal main bus bars and at least one vertical branch bus bar, and the two horizontal main bus bars in the same phase and the same group are vertically arranged up and down; every two upper and lower adjacent horizontal main buses in the same phase and the same group are connected through the vertical branch bus; every two horizontal main buses which are adjacent horizontally and have the same phase and different groups are connected through the bus connecting piece; the bus bar clamping device is used for clamping and pressing each horizontal main bus bar at the same horizontal height; each bus clamp device comprises an adjusting piece, an upper clamping row and a lower clamping row, wherein the adjusting piece limits the maximum distance between the upper clamping row and the lower clamping row.

Furthermore, two ends of the bus connecting piece are respectively fixedly connected with the two horizontal main buses which are adjacent horizontally and have different phases and different groups.

Furthermore, an interval exists between every two same-group same-phase upper and lower adjacent horizontal main buses.

Further, a space exists between every two phases of the large bus bar groups.

Further, the adjusting piece comprises a connecting screw and a nut, wherein the connecting screw is fixedly connected to the lower clamping row and is in threaded fit with the nut; the upper clamp row is in sliding fit with the connecting screw, and the upper clamp is arranged between the nut and the lower clamp row.

Further, the lower clamping row is fixed to be connected to the switch cabinet frame.

Furthermore, a plurality of tooth-shaped upper clamping blocks are preset in the upper clamping row; a plurality of tooth-shaped lower clamping blocks are preset in the lower clamping row; and one tooth-shaped upper clamping block and one tooth-shaped lower clamping block which are aligned clamp and fix one horizontal main bus.

The utility model has the beneficial effects that: two sets of small bus bar groups are connected through the bus connecting piece, and each two sets of adjacent small bus bar groups are subjected to double splicing, and two horizontal main bus bars which are arranged in the same group are arranged along vertical intervals, and meanwhile, all the horizontal main bus bars are spliced to optimize the layout of a bus bar system, so that the air convection in the cabinet is increased, the heat dissipation performance of the bus bars is better, the utilization rate of the bus bars is also improved, and the using amount of copper bars is greatly reduced.

Drawings

Fig. 1 is a schematic view of a switchgear.

Fig. 2 is a schematic diagram of a three-phase large bus bar set.

Fig. 3 is a side view of the switchgear.

The bus bar clamping device comprises a switch cabinet frame 1, a large bus bar group 21, a small bus bar group 22, a horizontal main bus bar 23, a vertical branch bus bar 24, a bus bar connecting piece 25, a bus bar clamping device 3, a lower clamping bar 31, a tooth-shaped upper clamping block 311, an upper clamping bar 32, a tooth-shaped lower clamping block 321, an adjusting piece 33, a connecting screw 331, a nut 332 and a groove 4.

Detailed Description

To facilitate an understanding of the utility model, the utility model is described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1 to 2, in the present embodiment, a bus bar system of a low voltage distribution equipment includes a switch cabinet frame 1, four bus bar clamping devices 3, and three-phase large bus bar groups 21, wherein the three-phase large bus bar groups 21 are arranged in a transverse array, and a space exists between every two-phase large bus bar groups 21. Each phase of the large bus bar group 21 comprises two groups of small bus bar groups 22; each group of small bus bar groups 22 comprises two horizontal main bus bars 23 and a vertical branch bus bar 24, wherein the two horizontal main bus bars 23 in the same phase in the same group are vertically arranged up and down, and one vertical branch bus bar 24 is connected between one end of each two vertical adjacent horizontal main bus bars 23 in the same phase in the same group. The horizontal main bus 23 and the vertical branch bus 24 are formed by overlapping a plurality of straight copper sheets, wherein the straight copper sheets of the vertical branch bus 24 are shorter.

In this embodiment, four bus bar clamp arrangements 3 and a three-phase large bus bar set 21 may be arranged in the middle of the switchgear cabinet frame 1.

In this embodiment, each phase of the large bus bar group 21 further includes two bus bar connecting members 25, wherein each bus bar connecting member 25 is formed by stacking a plurality of straight copper sheets, and the two bus bar connecting members 25 are both disposed between the two sets of the small bus bar groups 22. In the two groups of the small bus bar groups 22 with the same phase, two ends of the bus bar connecting piece 25 are respectively and fixedly connected with two horizontal main bus bars 23 which are horizontally adjacent and have different phases. Connect two sets of little generating line group 22 of homophase through bus connector 25, carry out the double pin with two sets of little generating line group 22 of homophase, and, arrange along vertical looks interval through two horizontal main bus 23 with the homophase with the group, simultaneously, splice each horizontal main bus 23 with the homophase with the group, optimize bus system's overall arrangement, increase the interior air convection of cabinet, make bus heat dispersion better, also improved the generating line utilization ratio, make the copper bar quantity reduce by a wide margin.

Referring to fig. 3, in the present embodiment, the four bus bar clamp devices 3 are equally divided into two groups, and the two bus bar clamp devices 3 of the same group are arranged vertically; the two sets of bus bar clamp devices 3 are respectively arranged at the front end and the rear end of the three-phase large bus bar group 21. Each bus bar clamping device 3 is used to clamp a respective horizontal main bus bar 23 at the same level. Each bus-bar clamp 3 comprises an adjusting member 33, an upper clamping row 32 and a lower clamping row 31, wherein the upper clamping row 32 is preset with four toothed upper clamping blocks 321, the lower clamping row 31 is preset with four toothed lower clamping blocks 311, and the four toothed upper clamping blocks 321 are respectively aligned with the four toothed lower clamping blocks 311. The lower clamping bar 31 is fixedly connected to the switchgear cabinet frame 1 by bolts. The adjusting member 33 includes a screw and a nut 332, wherein the connecting screw 331 is screwed to the lower clip row 31; the upper clip row 32 is provided with a through hole, and the connecting screw 331 passes through the through hole, so that the upper clip row 32 can slide along the connecting screw 331. The screw 331 is connected with the nut 332, the upper clamping row 32 is positioned between the nut 332 and the lower clamping row 31, and the maximum distance between the upper clamping row 32 and the lower clamping row 31 is adjusted by rotating the nut 332, so that the aligned toothed upper clamping block 321 and toothed lower clamping block 311 can clamp and fix one horizontal main bus bar 23. The upper clamping row 32 and the lower clamping row 31 are both provided with a plurality of grooves 4 for embedding the straight copper sheets of the horizontal main bus 23. The bus bar clamp device 3 can be matched with the height of the horizontal main bus bar 23 through the adjusting piece 33, and the bus bar clamp device 3 is convenient to assemble. An adjusting piece 33 is arranged between every two horizontal main buses 23, so that the bus bar clamping device 3 has better stability and high mechanical strength for clamping and fixing the horizontal main buses 23.

In the present embodiment, stainless steel is used as the material of the lower gripper bar 31, so that the lower gripper bar 31 can more effectively avoid the occurrence of eddy currents.

The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to limit the present invention in any way. Those skilled in the art can make many changes, modifications, and equivalents to the embodiments of the utility model without departing from the scope of the utility model as set forth in the claims below. Therefore, equivalent changes made according to the spirit of the present invention should be covered within the protection scope of the present invention without departing from the contents of the technical scheme of the present invention.

Claims

1. A bus system of low-voltage distribution equipment comprises a switch cabinet frame (1), at least four bus clamp devices (3) and at least three-phase large bus groups (21), wherein the bus clamp devices are installed on the switch cabinet frame (1); three-phase big generating line group (21) are along transversely arranging its characterized in that: each phase of the large bus bar group (21) comprises at least two groups of small bus bar groups (22) and at least two bus bar connecting pieces (25); each phase of the small bus bar group (22) comprises at least two horizontal main bus bars (23) and at least one vertical branch bus bar (24), and the two horizontal main bus bars (23) in the same phase group are vertically arranged up and down; every two upper and lower adjacent horizontal main buses (23) in the same phase and the same group are connected through the vertical branch buses (24); every two horizontal main buses (23) which are adjacent horizontally and have the same phase and different groups are connected through the bus connecting piece (25); the bus bar clamping device comprises at least four bus bar clamping devices (3), wherein each bus bar clamping device (3) is used for clamping and pressing each horizontal main bus bar (23) with the same horizontal height; each bus bar clamp device (3) comprises an adjusting piece (33), an upper clamp row (32) and a lower clamp row (31), wherein the adjusting piece (33) limits the maximum distance between the upper clamp row (32) and the lower clamp row (31).

2. The bus bar system of a low voltage power distribution apparatus of claim 1, wherein: and two ends of the bus connecting piece (25) are respectively and fixedly connected with two horizontal main buses (23) which are adjacent horizontally and have different phases and different groups.

3. The bus bar system of a low voltage power distribution apparatus of claim 1, wherein: and a space exists between every two same-group same-phase upper and lower adjacent horizontal main buses (23).

4. The bus bar system of a low voltage power distribution apparatus of claim 1, wherein: and a space exists between every two phases of the large bus bar groups (21).

5. The bus bar system of a low voltage power distribution apparatus of claim 1, wherein: the adjusting piece (33) comprises a connecting screw (331) and a nut (332), wherein the connecting screw (331) is fixedly connected to the lower clamping bar (31), and the connecting screw (331) is in threaded fit with the nut (332); the upper clamping row (32) is in sliding fit with a connecting screw (331), and the upper clamping row (32) is arranged between the nut (332) and the lower clamping row (31).

6. The bus bar system of a low voltage power distribution apparatus of claim 1, wherein: the lower clamping row (31) is fixedly connected to the switch cabinet frame (1).

7. The bus bar system of a low voltage power distribution apparatus of claim 1, wherein: a plurality of tooth-shaped upper clamping blocks (321) are preset on the upper clamping row (32); a plurality of tooth-shaped lower clamping blocks (311) are preset on the lower clamping row (31); and one tooth-shaped upper clamping block (321) and one tooth-shaped lower clamping block (311) which are aligned clamp and fix one horizontal main bus (23).