CN113451893A

CN113451893A - Busbar fixing structure of low-voltage cabinet

Info

Publication number: CN113451893A
Application number: CN202110848490.0A
Authority: CN
Inventors: 胡正勇; 廖天明; 付志超; 张海根; 徐鹏; 傅晓飞; 纪坤华; 周谷亮
Original assignee: State Grid Shanghai Electric Power Co Ltd; Shanghai Electric Group Corp
Current assignee: State Grid Shanghai Electric Power Co Ltd; Shanghai Electric Group Corp
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2021-09-28

Abstract

The invention relates to a low-voltage cabinet busbar fixing structure, comprising a bracket and a plurality of insulators. All copper bars are arranged in a row parallel to each other between two opposite sides of a low-voltage cabinet, and between two adjacent groups of copper bars. Insulators are provided, the brackets are fixedly connected to the low-voltage cabinet for supporting the copper bars, the two groups of copper bars at both ends are respectively connected to the brackets, and insulators are arranged between the brackets and the copper bars. Compared with the prior art, the present invention uses insulators to connect the copper bars in parallel and in series, and then is fixed to the cabinet by the bracket, which greatly increases the heat dissipation gap between the copper bars and ensures the heat dissipation of the copper bars; Insulators are installed between the copper bars and between the copper bars and the bracket. The insulators can locate and limit the copper bars, ensuring the consistency of the position of each pole and the heat dissipation gap, facilitating subsequent wiring and higher standardization.

Description

Busbar fixing structure of low-voltage cabinet

Technical Field

The invention relates to a busbar connection structure, in particular to a low-voltage cabinet busbar fixing structure.

Background

The existing low-voltage switch cabinet is of an integral structure, the frame of the low-voltage switch cabinet generally adopts an integral assembly process, the installation of a main busbar and a branch busbar in the low-voltage switch cabinet is parallel to the front transverse arrangement of the low-voltage switch cabinet, the low-voltage switch cabinet comprises A, B, C tripolar busbars, each tripolar busbar comprises two groups of conductive copper bars, see fig. 1, only 3 copper bars are simply drawn in fig. 1, mounting holes are formed in the copper bars, and three copper bars are fixedly connected to a cabinet body support through insulators respectively. However, when using current fixed knot to arrange A, B, C tripolar female row and fix in the low-voltage cabinet, every copper bar all transversely places, places side by side in same plane, and total clearance between the copper bar is S- (3 xL), and S represents the distance between two relative sides of low-voltage cabinet, and L represents the width of copper bar, and the volume of low-voltage cabinet is limited, and it is less to lead to the clearance between adjacent copper bar, is unfavorable for the copper bar heat dissipation.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a low-voltage cabinet busbar fixing structure.A copper bar is longitudinally connected in parallel in series by using an insulator and then fixed on a cabinet body by a bracket, so that the heat dissipation gap between the copper bar is greatly increased, and the heat dissipation of the copper bar is ensured; install the insulator between the adjacent copper bar and between copper bar and the support, the insulator can fix a position and spacing copper bar, has ensured the uniformity and the heat dissipation clearance in every utmost point copper bar position, the follow-up wiring of being convenient for, and the standardization is higher.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a female fixed knot that arranges of low-voltage cabinet constructs, includes support and a plurality of insulator, and all copper bars are arranged into one that is parallel to each other and are arranged between two relative sides of low-voltage cabinet, are equipped with the insulator between two sets of adjacent copper bars, support fixed connection is to the low-voltage cabinet for support the copper bar, two sets of copper bars at both ends are connected to the support respectively, are equipped with the insulator between support and the copper bar, and total clearance between the copper bar is S- (6 x d), and S represents the distance between two relative sides of low-voltage cabinet, and d represents the thickness of a set of copper bar.

Further, the quantity of copper bar is 6 12, and the two sets of copper bars of A utmost point are adjacent, and the two sets of copper bars of B utmost point are adjacent, and the two sets of copper bars of C utmost point are adjacent, ensure the uniformity of every utmost point position, the follow-up wiring of being convenient for or carrying out other operations.

Furthermore, a first insulator is arranged between two groups of adjacent copper bars with the same polarity, the length of the first insulator is a preset first length, and the distance between the two groups of adjacent copper bars with the same polarity can be set as required.

Furthermore, the first insulator is an epoxy insulator or other type of insulator, and the number of the first insulators is 3.

Furthermore, a second insulator is arranged between two groups of adjacent copper bars with different poles, the length of the second insulator is a preset second length, and the distance between the two groups of adjacent copper bars with different poles can be set as required.

Furthermore, the second insulator is an epoxy resin insulator or other types of insulators, and the number of the second insulators is 2.

Furthermore, a third insulator is arranged between the two groups of copper bars at the two ends and the support, the length of the third insulator is a preset third length, and the distance between the copper bars and the support can be set as required.

Furthermore, the third insulator is an epoxy resin insulator or other types of insulators, and the number of the third insulators is 2.

Furthermore, both ends of the support are fixedly connected to two opposite side surfaces of the low-voltage cabinet, and the support and the low-voltage cabinet are connected in a threaded manner.

Further, each copper bar is provided with a copper bar connecting hole, each support is provided with a support connecting hole, the insulator passes through the copper bar connecting holes and is installed between adjacent copper bars, and the insulator passes through the copper bar connecting holes and the support connecting holes and is arranged between the supports and the copper bars.

Compared with the prior art, the invention has the following beneficial effects:

(1) the insulator is used for longitudinally connecting the copper bars in series in parallel, and the copper bars are fixed on the cabinet body through the bracket, so that the heat dissipation gap between the copper bars is greatly increased, and the heat dissipation of the copper bars is ensured.

(2) Install the insulator between the adjacent copper bar and between copper bar and the support, the insulator can fix a position and spacing copper bar, has ensured the uniformity and the heat dissipation clearance in every utmost point copper bar position, the follow-up wiring of being convenient for, and the standardization is higher.

(3) Different insulators are used between adjacent copper bars with the same polarity, between adjacent copper bars with different polarities and between the copper bars and the support, the lengths of the insulators are set respectively, and the spacing between adjacent copper bars with the same polarity, the spacing between adjacent copper bars with different polarities and the spacing between the copper bars and the support can be adjusted flexibly.

Drawings

Fig. 1 is a schematic structural view of a conventional busbar fixing structure;

fig. 2 is a schematic structural diagram of a busbar fixing structure of a low-voltage cabinet in an embodiment;

FIG. 3 is a schematic structural diagram of a first insulator in an embodiment;

FIG. 4 is a schematic structural diagram of a second insulator in the embodiment;

fig. 5 is a schematic structural view of a third insulator in the embodiment;

FIG. 6 is a schematic structural view of a stent in an embodiment;

reference numerals: 1. the low-voltage cabinet, 2, support, 2 ', cabinet body support among the prior art, 3, copper bar, 4, insulator, 4', insulator among the prior art.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. Parts are exaggerated in the drawing where appropriate for clarity of illustration.

Example 1:

as shown in fig. 1, the existing busbar fixing structure of the low-voltage cabinet places all the copper bars 3 side by side, the copper bars 3 are installed on the cabinet body bracket 2 'through insulators 4', the installation surfaces of all the copper bars 3 are actually in the same plane, the total gap between the copper bars 3 is S- (3 × L), S represents the distance between two opposite side surfaces of the low-voltage cabinet, L represents the width of the copper bars 3, and the arrangement mode influences the heat dissipation of the copper bars 3.

The application provides a female fixed knot that arranges of low-voltage cabinet constructs, including support 2 and a plurality of insulator 4, as shown in fig. 2, all copper bar 3 are arranged into one row that is parallel to each other and are arranged between two relative sides of low-voltage cabinet 1, the installation face of all copper bar 3 is actually parallel to each other and exist a certain interval, 2 individual copper bar 3 is a set of, be equipped with insulator 4 between two sets of

adjacent copper bar

3, 2 fixed connection of support to low-voltage cabinet 1, be used for supporting copper bar 3, two sets of copper bar 3 at both ends are connected to support 2 respectively, be equipped with insulator 4 between support 2 and the copper bar 3.

In the application, the total gap between the copper bars 3 is S- (6 × d), S represents the distance between two opposite side surfaces of the low-voltage cabinet 1, and d represents the thickness of a group of copper bars 3.

Compare the horizontal arrangement among the prior art, this application uses the vertical mode of arranging to carry out the installation of copper bar 3, and the clearance between copper bar 3 is showing the increase, is favorable to the heat dissipation of copper bar 3, and shared space does not sharply increase in low-voltage cabinet 1, does not influence the installation of placing of other parts in low-voltage cabinet 1.

In this embodiment, the quantity of copper bar 3 is 6 12 of group, and two sets of copper bars 3 of A utmost point are adjacent, and two sets of copper bars 3 of B utmost point are adjacent, and two sets of copper bars 3 of C utmost point are adjacent, ensure the uniformity of 3 positions of every utmost point copper bar, and the follow-up wiring of being convenient for or carrying out other operations guarantee that every utmost point generating line all is in same position to female fixed standardization of arranging has been improved.

A first insulator is arranged between two groups of adjacent copper bars 3 with the same polarity, for example, the first insulator is arranged between the two groups of copper bars 3 with the A pole, and the structural schematic diagram of the first insulator is shown in FIG. 3; a second insulator is arranged between two groups of adjacent copper bars 3 with different poles, if the copper bars 3 are arranged in parallel, namely the two groups of copper bars 3 with A poles, the two groups of copper bars 3 with B poles and the two groups of copper bars 3 with C poles, a second insulator is arranged between the B poles and the adjacent copper bars 3 with A poles or the adjacent copper bars with C poles, and the structural schematic diagram of the second insulator is shown in FIG. 4; a third insulator is arranged between the two groups of copper bars 3 at the two ends and the bracket 2, and a schematic structural diagram of the third insulator is shown in fig. 5, for example, a third insulator is arranged between the copper bars 3 at the a pole or the C pole at the two ends and the bracket 2.

The length of first insulator is the first length of presetting, the length of second insulator is the second length of presetting, the length of third insulator is the third length of presetting, can set for the interval between homopolar two sets of adjacent copper bar 3 as required, interval and copper bar 3 and the support 2 interval between the homopolar two sets of adjacent copper bar 3 of interval between, ensure to leave sufficient heat dissipation clearance, and fix a position and spacing copper bar 3 simultaneously, guarantee the mounted position of copper bar 3.

The insulator 4 is an epoxy insulator or other type of insulator.

In this embodiment, include 2 supports 2, these two supports 2 are fixed connection respectively to the relative two sides of low-voltage cabinet 1, and the connected mode between support 2 and the low-voltage cabinet 1 is the spiro union. The support 2 is used for fixing the copper bar 3 to the cabinet body of the low-voltage cabinet 1, the structural schematic diagram of the support 2 in the embodiment is shown in fig. 6, and in other embodiments, the shape and the structure of the support 2 can be changed.

Copper bar connecting holes are respectively formed in each copper bar 3, support connecting holes are formed in the support 2, the insulators 4 are arranged between the two adjacent copper bars 3 through the copper bar connecting holes, and the insulators 4 are installed between the supports 2 and the copper bars 3 through the copper bar connecting holes and the support connecting holes.

The copper bar 3 and the insulator 4 and the bracket 2 can be connected by screw connection. In this embodiment, through insulator 4 fixed connection between the adjacent copper bar 3, be connected through insulator 4 between copper bar 3 and the support 2, modular assembly is favorable to assembling from the cabinet like this. It should be noted that, this application does not restrict the connection mode between the copper bar 3, can be through insulator 4 connection, also can concatenate the copper bar 3 and spacing through other modes.

When the installation is in practice, can use insulator 4 earlier with multiunit copper bar 3 fixed connection together, form parallel, a parallel copper bar 3, be connected to support 2 through insulator 4 with the copper bar 3 at its both ends again, through support 2 with copper bar 3 and insulator 4 fixed stay on the cabinet body of low-voltage cabinet 1, realize female fixed of arranging.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. A low-voltage cabinet busbar fixing structure, characterized in that it includes a bracket (2) and a plurality of insulators (4), and all copper bars (3) are arranged in a row parallel to each other and are arranged opposite to the low-voltage cabinet (1). Insulators (4) are arranged between the two side surfaces and between the adjacent two groups of copper bars (3), and the brackets (2) are fixedly connected to the low-voltage cabinet (1) for supporting the copper bars (3). The two sets of copper bars (3) at the ends are respectively connected to the brackets (2), and insulators (4) are arranged between the brackets (2) and the copper bars (3).

2. A low-voltage cabinet busbar fixing structure according to claim 1, characterized in that the number of copper bars (3) is 6 groups of 12, the two groups of copper bars (3) of A pole are adjacent, and the B pole is adjacent. The two sets of copper bars (3) of the C pole are adjacent, and the two sets of copper bars (3) of the C pole are adjacent.

3. A low-voltage cabinet busbar fixing structure according to claim 2, wherein a first insulator is provided between two groups of adjacent copper bars (3) of the same pole, and the length of the first insulator is preset the first length.

4 . The low-voltage cabinet busbar fixing structure according to claim 3 , wherein the first insulators are epoxy resin insulators, and the number of the first insulators is three. 5 .

5. A low-voltage cabinet busbar fixing structure according to claim 2, characterized in that a second insulator is provided between two groups of adjacent copper bars (3) with different poles, and the length of the second insulator is preset the second length.

6 . The low-voltage cabinet busbar fixing structure according to claim 5 , wherein the second insulators are epoxy resin insulators, and the number of the second insulators is two. 7 .

7. A low-voltage cabinet busbar fixing structure according to claim 2, wherein a third insulator is provided between the two groups of copper bars (3) at both ends and the bracket (2), and the length of the third insulator is The preset third length.

8 . The low-voltage cabinet busbar fixing structure according to claim 7 , wherein the third insulators are epoxy resin insulators, and the number of the third insulators is two. 9 .

9. A low-voltage cabinet busbar fixing structure according to claim 1, wherein both ends of the bracket (2) are fixedly connected to two opposite sides of the low-voltage cabinet (1), and the bracket (2) is connected to the two sides of the low-voltage cabinet (1). The connection between the low-voltage cabinets (1) is screw connection.

10. A low-voltage cabinet busbar fixing structure according to claim 1, characterized in that, each copper bar (3) is provided with a copper bar connection hole respectively, and the bracket (2) is provided with a bracket connection hole , the insulator (4) is installed between the adjacent copper bars (3) through the copper bar connection holes, and the insulator (4) is arranged between the bracket (2) and the copper bar (3) through the copper bar connection holes and the bracket connection holes. 3) between.