Direct-penetrating type bus bridge between bus chambers of switch cabinet

Abstract

The utility model relates to a direct-penetrating type bus bridge between bus chambers of a switch cabinet. The utility model aims to solve the problems of complex bus bridge structure and bus lap joint structure in the bus bridge, high cost and the like in the prior art. According to the technical scheme, the device comprises a bridge box connected between a bus chamber right side wire inlet of a left side medium-voltage wire inlet switch cabinet and a bus chamber left side wire inlet of a right side medium-voltage wire inlet switch cabinet, the left side and the right side of the bridge box are open, a front side plate or a rear side plate of the bridge box is provided with a maintenance window, and the maintenance window is provided with a maintenance sealing plate. A vertical left front mounting column, a vertical right front mounting column, a vertical left rear mounting column and a vertical right rear mounting column are mounted in the bridge box, a left front supporting column insulator is mounted on the left front mounting column, a right front supporting column insulator is mounted on the right front mounting column, and a left rear upper supporting column insulator and a left rear lower supporting column insulator are mounted on the left rear mounting column. A right rear upper post insulator and a right rear lower post insulator are mounted on the right rear mounting column; and bus fixing clamping seats are mounted at the front ends of the post insulators respectively.

Description

Technical Field

[0001] The utility model relates to a busbar bridge for an electric power supply system, in particular to a straight-through busbar bridge between busbar chambers of a switch cabinet. Background Art

[0002] In the power supply system, the busbar at the low-voltage output end of the main transformer in the high-voltage room is often extended to the medium-voltage incoming switchgear in the distribution room through the main transformer bushing on the partition wall between the high-voltage room and the distribution room through the busbar bridge. In the distribution room, two medium-voltage incoming switchgears are often connected together through busbar lap joints. At present, the busbar bridge is generally set above the incoming ports on the top of the two medium-voltage incoming switchgears, and the busbars are extended to the two medium-voltage incoming switchgears respectively.

[0003] The Chinese patent No. CN217036348U previously applied by the applicant discloses a busbar bridge box assembly with two medium-voltage cabinet side bridge boxes arranged vertically, the structure includes a first bridge pier, a first bridge box, a first adjustment ring, a second bridge pier, a second bridge box and a second adjustment ring, wherein the first bridge pier and the second bridge pier are respectively installed and fixed on the cabinet top inlet and outlet ports of two medium-voltage incoming line switch cabinets, the first bridge box and the second bridge box are respectively vertically placed and fixed on the first bridge pier and the second bridge pier, and the transverse inlet and outlet windows of the first bridge box and the second bridge box are arranged relatively, the first adjustment ring is connected to the transverse inlet and outlet window of the first bridge box, the second adjustment ring is connected to the transverse inlet and outlet window of the second bridge box, the first adjustment ring and the second adjustment ring are mutually sleeved and the sleeve depth is adjustable. The disadvantages of this scheme are: first, the busbar bridge structure and the busbar overlap structure in the busbar bridge are relatively complex and costly; second, when there is insufficient space above the cabinet top inlet port of the medium-voltage incoming line switch cabinet, the busbar bridge cannot be built. Summary of the invention

[0004] In order to overcome the problems in the prior art such as the busbar bridge structure and the busbar overlapping structure in the busbar bridge being complicated and costly, and the busbar bridge being unable to be built when there is insufficient space above the top inlet of the medium voltage incoming line switch cabinet, the purpose of the utility model is to provide an improved straight-through busbar bridge between the busbar chambers of the switch cabinet, which can overcome the defects of the prior art.

[0005] The technical solution adopted by the present utility model to solve its technical problems is as follows: A direct-through busbar bridge between the busbar compartments of switchgear cabinets, characterized in that: it includes a bridge box respectively connected between the right inlet of the busbar compartment of the left medium-voltage incoming switchgear cabinet and the left inlet of the busbar compartment of the right medium-voltage incoming switchgear cabinet. The left and right sides of the bridge box are both open. An inspection window is provided on the front side plate or the rear side plate of the bridge box, and an inspection cover for closing or opening the inspection window is installed on the inspection window. Vertically arranged left front mounting posts, right front mounting posts, left rear mounting posts and right rear mounting posts are installed in the bridge box. A left front support insulator is installed on the left front mounting post, a right front support insulator is installed on the right front mounting post, a left rear upper support insulator and a left rear lower support insulator are installed on the left rear mounting post, and a right rear upper support insulator and a right rear lower support insulator are installed on the right rear mounting post. Busbar fixing clamps are respectively installed at the front ends of the left front support insulator, the right front support insulator, the left rear upper support insulator, the left rear lower support insulator, the right rear upper support insulator and the right rear lower support insulator.

[0006] The busbar fixing clamps on the left front support insulator and the right front support insulator in the above technical solution can be used to install a busbar in the bridge box. The busbar fixing clamps on the left rear upper support insulator and the right rear upper support insulator can be used to install another busbar in the bridge box. The busbar fixing clamps on the left rear lower support insulator and the right rear lower support insulator can be used to install yet another busbar in the bridge box.

[0007] The right inlet of the busbar compartment of the left medium-voltage incoming switchgear cabinet in the above technical solution can be that three first busbar bushings are provided on the right side plate of the busbar compartment of the left medium-voltage incoming switchgear cabinet, and the three busbars in the busbar compartment of the left medium-voltage incoming switchgear cabinet are respectively led to the bridge box outside the right side plate of the busbar compartment through the three first busbar bushings.

[0008] The left inlet of the busbar compartment of the right medium-voltage incoming switchgear cabinet in the above technical solution can be that three second busbar bushings are provided on the left side plate of the busbar compartment of the right medium-voltage incoming switchgear cabinet, and the three busbars in the busbar compartment of the right medium-voltage incoming switchgear cabinet are respectively led to the bridge box outside the left side plate of the busbar compartment through the three second busbar bushings.

[0009] In the above technical solution, inspection windows can be provided on both the front side plate and the rear side plate of the bridge box, and inspection covers for closing or opening the inspection windows are installed on both inspection windows.

[0010] In the above technical solution, both the right inlet of the busbar compartment and the left inlet of the busbar compartment can be used for the incoming or outgoing of the busbars in the busbar compartment.

[0011] The beneficial effects of the present utility model are as follows: Since it includes a bridge box respectively connected to the right inlet of the busbar chamber of the left medium-voltage incoming switchgear cabinet and the left inlet of the busbar chamber of the right medium-voltage incoming switchgear cabinet, both the left and right sides of the bridge box are open, a maintenance window is provided on the front side plate or the rear side plate of the bridge box, a maintenance cover plate for closing or opening the maintenance window is installed on the maintenance window, vertical left front mounting columns, right front mounting columns, left rear mounting columns and right rear mounting columns are installed in the bridge box, a left front support insulator is installed on the left front mounting column, a right front support insulator is installed on the right front mounting column, a left rear upper support insulator and a left rear lower support insulator are installed on the left rear mounting column, a right rear upper support insulator and a right rear lower support insulator are installed on the right rear mounting column, and busbar fixing seat clips are respectively installed at the front ends of the left front support insulator, the right front support insulator, the left rear upper support insulator, the left rear lower support insulator, the right rear upper support insulator and the right rear lower support insulator. Therefore, the three busbars in the busbar chamber of the left medium-voltage incoming switchgear cabinet can be extended into the bridge box through the right inlet of the busbar chamber of the left medium-voltage incoming switchgear cabinet and fixed, and then extended into the busbar chamber of the right medium-voltage incoming switchgear cabinet through the left inlet of the busbar chamber of the right medium-voltage incoming switchgear cabinet, realizing the direct busbar lap side connection of the left and right medium-voltage incoming switchgear cabinets. There is no need to conduct a tortuous busbar lap side connection through the top inlets of the left and right medium-voltage incoming switchgear cabinets, greatly simplifying the busbar bridge structure and the busbar lap structure inside the busbar bridge, effectively reducing the busbar lap side connection cost of the left and right medium-voltage incoming switchgear cabinets, and being able to be applicable to the busbar lap side connection when there is insufficient space above the top inlets of the medium-voltage incoming switchgear cabinets.

[0012] The following further describes the present utility model in conjunction with the accompanying drawings and embodiments. Description of the Drawings

[0013] Figure 1 is a three-dimensional schematic diagram of an embodiment of the present utility model.

[0014] Figure 2 is Figure 1 a three-dimensional schematic diagram of opening the top side plate, front side plate and maintenance cover plate of the bridge box.

[0015] Figure 3 is Figure 2 a three-dimensional schematic diagram from another angle.

[0016] Figure 4 is Figure 1 an enlarged left view of the bridge box when not installed.

[0017] Figure 5 is Figure 1 an enlarged right view of the bridge box when not installed.

[0018] In the figure: 1. Left medium-voltage incoming switchgear cabinet; 2. Right incoming port of the busbar chamber; 3. Right medium-voltage incoming switchgear cabinet; 4. Left incoming port of the busbar chamber; 5. Bridge box; 6. Front side plate; 7. Maintenance window; 8. Maintenance cover plate; 9. Left front mounting post; 10. Right front mounting post; 11. Left rear mounting post; 12. Right rear mounting post; 13. Left front post insulator; 14. Right front post insulator; 15. Left rear upper post insulator; 16. Left rear lower post insulator; 17. Right rear upper post insulator; 18. Right rear lower post insulator; 19. Busbar fixing clamp seat; 20. First busbar bushing; 21. Second busbar bushing. Specific implementation manner

[0019] Refer to Figures 1 to 5 , for the direct-through busbar bridge between the busbar chambers of this switchgear cabinet, its characteristics are: it includes a bridge box 5 respectively connected to the right incoming port 2 of the busbar chamber of the left medium-voltage incoming switchgear cabinet 1 and the left incoming port 4 of the busbar chamber of the right medium-voltage incoming switchgear cabinet 3. The left and right sides of the bridge box 5 are both open. The front side plate 6 of the bridge box 5 is provided with a maintenance window 7, and a maintenance cover plate 8 for closing or opening the maintenance window 7 is installed on the maintenance window 7. Vertically arranged left front mounting post 9, right front mounting post 10, left rear mounting post 11 and right rear mounting post 12 are installed in the bridge box 5. A left front post insulator 13 is installed on the left front mounting post 9, a right front post insulator 14 is installed on the right front mounting post 10, a left rear upper post insulator 15 and a left rear lower post insulator 16 are installed on the left rear mounting post 11, and a right rear upper post insulator 17 and a right rear lower post insulator 18 are installed on the right rear mounting post 12. Busbar fixing clamp seats 19 etc. are respectively installed at the front ends of the left front post insulator 13, right front post insulator 14, left rear upper post insulator 15, left rear lower post insulator 16, right rear upper post insulator 17 and right rear lower post insulator 18.

[0020] In addition, the busbar fixing clamp seats 19 etc. on the left front post insulator 13 and the right front post insulator 14 are used to install a busbar B in the bridge box 5. The busbar fixing clamp seats 19 etc. on the left rear upper post insulator 15 and the right rear upper post insulator 17 are used to install another busbar A in the bridge box 5. The busbar fixing clamp seats 19 etc. on the left rear lower post insulator 16 and the right rear lower post insulator 18 are used to install yet another busbar C in the bridge box 5.

[0021] The right incoming port 2 of the busbar chamber of the left medium-voltage incoming switchgear cabinet 1 is that three first busbar bushings 20 are arranged on the right side plate of the busbar chamber of the left medium-voltage incoming switchgear cabinet 1, and the three busbars in the busbar chamber of the left medium-voltage incoming switchgear cabinet 1 respectively extend into the bridge box 5 outside the right side plate of the busbar chamber through the three first busbar bushings 20.

[0022] The left inlet of the busbar chamber of the right medium-voltage incoming switchgear cabinet 3 is that three second busbar bushings 21 are provided on the left side plate of the busbar chamber of the right medium-voltage incoming switchgear cabinet 3, and the three busbars in the busbar chamber of the right medium-voltage incoming switchgear cabinet 3 are respectively led to the bridge box 5 outside the left side plate of the busbar chamber through the three second busbar bushings 21.

[0023] The rear side plate 22 of the bridge box 1 is also provided with a maintenance window, and a maintenance cover plate for closing or opening the maintenance window is also installed on the maintenance window.

Claims

1. A direct-through busbar bridge between the busbar compartments of a switchgear cabinet, characterized in that: It includes a bridge box respectively connected between the right inlet of the busbar chamber of the left medium-voltage incoming switchgear cabinet and the left inlet of the busbar chamber of the right medium-voltage incoming switchgear cabinet. The left and right sides of the bridge box are both open. The front side plate or the rear side plate of the bridge box is provided with a maintenance window, and a maintenance cover plate for closing or opening the maintenance window is installed on the maintenance window. Vertically arranged left front mounting columns, right front mounting columns, left rear mounting columns and right rear mounting columns are installed in the bridge box. A left front support insulator is installed on the left front mounting column, a right front support insulator is installed on the right front mounting column, a left rear upper support insulator and a left rear lower support insulator are installed on the left rear mounting column, a right rear upper support insulator and a right rear lower support insulator are installed on the right rear mounting column, and busbar fixing clamp seats are respectively installed at the front ends of the left front support insulator, the right front support insulator, the left rear upper support insulator, the left rear lower support insulator, the right rear upper support insulator and the right rear lower support insulator.

2. The direct-through bus bridge between the bus compartments of the switchgear cabinet according to claim 1, characterized in that: The busbar fixing clamp seats on the left front support insulator and the right front support insulator are used to install a busbar in the bridge box. The busbar fixing clamp seats on the left rear upper support insulator and the right rear upper support insulator are used to install another busbar in the bridge box. The busbar fixing clamp seats on the left rear lower support insulator and the right rear lower support insulator are used to install yet another busbar in the bridge box.

3. The direct-through bus bridge between the switchgear bus compartments according to claim 1 or 2, characterized in that: The right inlet of the busbar chamber of the left medium-voltage incoming switchgear cabinet is that three first busbar bushings are arranged on the right side plate of the busbar chamber of the left medium-voltage incoming switchgear cabinet, and the three busbars in the busbar chamber of the left medium-voltage incoming switchgear cabinet respectively extend into the bridge box outside the right side plate of the busbar chamber through the three first busbar bushings.

4. The direct-through bus bridge between the bus compartments of the switchgear cabinet according to claim 1 or 2, characterized in that: The left inlet of the busbar chamber of the right medium-voltage incoming switchgear cabinet is that three second busbar bushings are arranged on the left side plate of the busbar chamber of the right medium-voltage incoming switchgear cabinet, and the three busbars in the busbar chamber of the right medium-voltage incoming switchgear cabinet respectively extend into the bridge box outside the left side plate of the busbar chamber through the three second busbar bushings.

5. The direct-through bus bridge between the bus compartments of the switchgear cabinet according to claim 1 or 2, characterized in that: Both the front side plate and the rear side plate of the bridge box are provided with maintenance windows, and maintenance cover plates for closing or opening the maintenance windows are installed on both maintenance windows.

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