Bus connection structure for open-type composite apparatus

Abstract

The utility model relates to a bus connection structure for an open-type combined electric appliance, which comprises three-phase main pipe buses extending horizontally and a plurality of support assemblies arranged along the extending direction of the three-phase main pipe buses, and the three-phase main pipe buses are in one-to-one connection with three-phase wiring terminals of the combined electric appliance. The supporting assembly comprises a supporting frame and three insulating columns fixedly connected to the supporting frame, the three-phase main pipe buses are in lap joint with the three insulating columns respectively, and bus fixing pieces for fixing the main pipe buses are arranged on the insulating columns. Compared with an existing flexible wire connection mode, the tubular bus-bars are of a hard wire structure extending straightly, the three-phase main tubular bus-bars extend horizontally and straightly under the supporting of the supporting assemblies, and the three-dimensional performance is higher. And the combined electric appliance is in hard connection with the main pipe bus through the branch pipe bus, so that the pipe buses in the station are horizontally and vertically arranged, the attractiveness of the bus arrangement in the station is improved, and the potential insulation hazard caused by the suspension and swing of the existing soft steel-cored aluminum stranded wire is more effectively eliminated.

Description

TECHNICAL FIELD

[0001] The utility model relates to high voltage combined electric appliance technical field, specifically point to a bus connection structure for open combined electric appliance. BACKGROUND

[0002] High voltage combined electric appliance divides into open and fully enclosed two kinds according to insulating structure. Among them, open combined electric appliance is with disconnecting switch or circuit breaker as main body, current transformer, voltage transformer, cable head and other elements are combined into a whole electric appliance equipment together.

[0003] At present, each combined electric appliance in the transformer substation is connected through three-phase main bus, and the existing main bus usually adopts soft steel core aluminum stranded wire. The soft wire after connection is in a suspended state, which makes the whole extremely unattractive, and in the case of bad weather, swinging situation often occurs, and there is also a certain insulation risk. UTILITY MODEL CONTENTS

[0004] The utility model provides a bus connection structure for open combined electric appliance in view of the deficiency of prior art, uses three-phase main pipe bus to connect each combined electric appliance horizontally and vertically, the connection mode is simple and easy to operate, makes the whole station arrangement more neat and beautiful, and effectively eliminates the insulation risk caused by the existing soft main bus suspension swing.

[0005] The utility model is through following technical scheme realizes, a bus connection structure for open combined electric appliance, including horizontal extension's three-phase main pipe bus and along three-phase main pipe bus extension direction arrangement's a plurality of support components, three-phase main pipe bus with the three-phase wiring terminal of combined electric appliance one to one connection, support component includes support frame and three insulating columns of fixed connection on support frame, three-phase main pipe bus is overlapped on three insulating columns respectively, and bus fixing piece that insulating column is equipped with fixed main pipe bus.

[0006] The support component of the scheme supports and fixes three-phase main pipe bus through three insulating columns, and three-phase main pipe bus extends horizontally through the support of a plurality of support components, ensuring the stability of three-phase main pipe bus. Compared with the existing soft wire connection mode, the pipe bus is a straight extension hard wire structure, and three-phase main pipe bus extends straight under the support of a plurality of support components, which is strong in three-dimensionality, improves the beauty of bus arrangement in the station, and more effectively eliminates the insulation risk caused by the existing soft steel core aluminum stranded wire suspension swing.

[0007] As optimization, the support frame comprises a support column, a bottom plate is fixed to the lower end of the support column, the bottom plate is fixed to the ground through an anchor bolt, a support beam is fixed to the upper end of the support column, the support beam extends along the arrangement direction of the three-phase main pipe bus, and the three insulating columns are distributed along the length direction of the support beam and are fixed to the support beam. The support frame of the optimization scheme is fixed to form a T-shaped structure through the support column and the support beam, thereby reducing the material usage, reducing the weight of the support frame structure, and reducing the cost.

[0008] As optimization, the bus fixing member comprises a mounting plate fixed to the top of the insulating column, and two hoops are fixed to the top of the mounting plate and are distributed along the extension direction of the main pipe bus. The optimization scheme fixes the main pipe bus through the two hoops, thereby enhancing the fixing effect on the main pipe bus.

[0009] As optimization, the main pipe bus is connected with a vertical branch pipe bus through a tee joint, the vertical branch pipe bus is arranged vertically with the main pipe bus, and one end of the vertical branch pipe bus away from the main pipe bus is connected with the phase connection terminal. The optimization scheme can directly connect the main pipe bus with the phase connection terminal through the vertical branch pipe bus, is suitable for the connection between the phase main pipe bus and the connection terminal which are relatively close to each other, and realizes the hard connection between the main pipe bus and the combined electrical apparatus.

[0010] As optimization, the connection terminal is connected with a horizontal branch pipe bus, the horizontal branch pipe bus is arranged vertically with the vertical branch pipe bus, and one end of the horizontal branch pipe bus away from the connection terminal is connected with the vertical branch pipe bus away from the main pipe bus through a tee joint. The optimization scheme is suitable for the connection between the phase main pipe bus and the connection terminal which are relatively far away from each other, the connection terminal extends outward through the horizontal branch pipe bus, and the connection with the vertical branch pipe bus is realized.

[0011] As optimization, the upper end of the connection terminal is fixed with an angle plate, and the branch pipe bus is fixed with the angle plate. The optimization scheme increases the contact area between the terminal and one end of the pipe bus through the angle plate, thereby improving the current passing capacity.

[0012] Compared with the existing soft wire connection mode, the pipe bus is a straight and extended hard wire structure, the three-phase main pipe bus extends horizontally and straightly under the support of the plurality of support assemblies, and the three-dimensionality is stronger. The combined electrical apparatus is hard connected with the main pipe bus through the branch pipe bus, the pipe buses in the station are arranged horizontally and vertically, the appearance of the bus arrangement in the station is improved, and the existing insulation hidden danger caused by the soft steel core aluminum stranded wire suspension swing is effectively eliminated. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a top view of the support assembly supporting the three-phase main pipe bus;

[0014] Figure 2 It is a front view of the support assembly;

[0015] Figure 3 To support the side view of the component;

[0016] Figure 4 This is a schematic diagram of the connection structure of the three-phase main busbar and combined electrical appliances in Example 1;

[0017] Figure 5 Diagram of main busbar and terminal block connection Figure 1 ;

[0018] Figure 6 Diagram of main busbar and terminal block connection Figure 2 ;

[0019] Figure 7 This is a schematic diagram of the connection structure of the three-phase main busbar and combined electrical appliances in Embodiment 2;

[0020] Figure 8 Diagram of main busbar and terminal block connection Figure 3 ;

[0021] Figure 9 Diagram of main busbar and terminal block connection Figure 4 ;

[0022] As shown in the figure:

[0023] 1. Main busbar, 2. Support assembly, 21. Support frame, 211. Support column, 212. Support beam, 213. Base plate, 22. Insulating column, 23. Busbar fastener, 231. Clamp, 232. Mounting plate, 3. Combined electrical appliance, 31. Terminal block, 4. Angle plate, 5. Vertical branch busbar, 6. Tee, 7. Horizontal branch busbar. Detailed Implementation

[0024] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0025] Example 1:

[0026] like Figures 1 to 7 As shown, a busbar connection structure for an open-type combined electrical appliance is as follows: Figure 1 As shown, the system includes a horizontally extending three-phase main busbar 1 and several support components 2 arranged along the extension direction of the three-phase main busbar 1. In this embodiment, at least two sets of support components 2 are distributed along the extension direction of the three-phase main busbar 1. The three-phase main busbar 1 extends straight in the horizontal direction with the support of the support components 2.

[0027] like Figure 2As shown, the support assembly 2 comprises a support frame 21 and three insulating columns 22 fixed on the support frame 21, and the three-phase main busbar 1 is overlapped on the three insulating columns 22, and the insulating columns 22 are provided with busbar fixing members 23 for fixing the main busbar 1.

[0028] As shown in the drawings, Figure 2 Specifically, the support frame 21 comprises a support column 211, the lower end of the support column 211 is fixed with a bottom plate 213, the bottom plate 213 is fixed on the ground through foundation bolts, and the upper end of the support column 211 is fixed with a support beam 212, the support beam 212 extends along the arrangement direction of the three-phase main busbar 1, and the three insulating columns 22 are distributed along the length direction of the support beam 212 and are fixed on the support beam 212. In this embodiment, the support beam 212 is perpendicular to the main busbar 1, and the lower end of the insulating column 22 is fixed on the top of the support beam 212 through bolts. The main busbar 1 is fixed on the insulating column 22 through the busbar fixing member 23, and the insulating column 22 is supported on the ground through the support frame 21.

[0029] As shown in the drawings, Figure 3 Specifically, the busbar fixing member 23 comprises a mounting plate 232 fixed on the top of the insulating column 22, and two hoops 231 are fixed on the top of the mounting plate 232 and are distributed along the extension direction of the main busbar 1. In this embodiment, the hoop 231 is composed of two bolt-connected clamping blocks, one of which is fixed with the mounting plate, and a clamping cavity for placing the main busbar 1 is arranged between the two clamping blocks. The main busbar is fixed on the top of the insulating column through the two hoops.

[0030] The three-phase main busbar 1 is connected with the three-phase terminal 31 of the combined electrical apparatus 3 one by one.

[0031] As shown in the drawings, Figure 5 Specifically, the main busbar 1 is connected with a vertical branch busbar 5 through a tee joint 6, the vertical branch busbar 5 is arranged vertically to the main busbar 1, and the end of the vertical branch busbar 5 away from the main busbar 1 is connected with the same-phase terminal 31. When the main busbar 1 is located directly above the same-phase terminal 31, the vertical branch busbar 5 connected with this main busbar 1 is located directly above the terminal 31, and the lower end of the vertical branch busbar 5 can be directly connected with the same-phase terminal 31.

[0032] As shown in the drawings, Figure 6As shown, a horizontal branch busbar 7 is connected to the terminal block 31. The horizontal branch busbar 7 and the vertical branch busbar 5 are arranged vertically. The end of the horizontal branch busbar 7 away from the terminal block 31 is connected to the end of the vertical branch busbar 5 away from the main busbar 1 via a tee 6. When the main busbar 1 is located on one side of its phase terminal block 31, the vertical branch busbar 5 cannot be directly connected to the terminal block 31. In this case, the lower end of the vertical branch busbar 5 is connected to the phase terminal block 31 through the horizontal extension of the horizontal branch busbar 7.

[0033] To improve current carrying capacity, a corner plate 4 is fixedly connected to the upper end of the terminal block 31, and the branch busbar is fixedly connected to the corner plate 4. In this embodiment, the corner plate 4 and the terminal block 31 are bolted together for easy disassembly and assembly.

[0034] The three-phase main busbar 1 and the three-phase terminal block 31 are connected one by one through the combination of vertical branch busbars 5 and horizontal branch busbars 7. After the various combined electrical appliances 3 in the substation are connected through the main busbar 1, the busbars are arranged horizontally and vertically, which improves the aesthetics of the busbar layout in the substation.

[0035] like Figure 4 As shown, specifically, the three-phase main busbars 1 are the A-phase main busbar, the B-phase main busbar, and the C-phase main busbar. The three-phase terminals 31 are the A-phase terminal, the B-phase terminal, and the C-phase terminal.

[0036] like Figure 4 As shown, this embodiment provides a connection structure for a three-phase main busbar 1 and a combined electrical appliance 3. The combined electrical appliance 3 is located on one side of the A-phase main busbar 1, and the three-phase terminals 31 of the combined electrical appliance 3 are located directly below the A-phase main busbar 1 and are arranged along the extension direction of the A-phase main busbar 1.

[0037] When connecting phase A, use as follows: Figure 5 As shown in the connection method, the main busbar 1 of phase A is connected to the vertical branch busbar 5 through the tee 6, and the lower end of the vertical branch busbar 5 is directly connected to the angle plate 4 on the terminal block 31 of phase A.

[0038] When connecting phase B, use the following method: Figure 6 As shown in the connection method, the B-phase main busbar 1 is connected to the vertical branch busbar 5 through the tee 6, and the B-phase terminal block 31 is connected to the angle plate 4 with the horizontal branch busbar 7. The horizontal branch busbar 7 is connected to the lower end of the vertical branch busbar 5 through the tee 6.

[0039] When connecting phase C, the following method is also used: Figure 6 As shown in the connection method, the C-phase main busbar 1 is connected to the vertical branch busbar 5 through the tee 6, and the C-phase terminal block 31 is connected to the angle plate 4 to the horizontal branch busbar 7. The horizontal branch busbar 7 is connected to the lower end of the vertical branch busbar 5 through the tee 6.

[0040] Example 2:

[0041] The difference between this embodiment and Embodiment 1 is that: Figure 7 As shown, this embodiment provides a connection structure for a three-phase main busbar 1 and two combined electrical appliances 3. One combined electrical appliance 3 is located on one side of the A-phase main busbar 1, and its three-phase terminals 31 are located directly below the A-phase main busbar 1 and arranged along the extension direction of the A-phase main busbar. The other combined electrical appliance 3 is located on one side of the C-phase main busbar 1, and its three-phase terminals 31 are located directly below the C-phase main busbar 1 and arranged along the extension direction of the C-phase main busbar.

[0042] When connecting phase A, use as follows: Figure 8 As shown in the connection method, the A-phase main busbar 1 is connected to the vertical branch busbar 5 through the tee 6. The lower end of the vertical branch busbar 5 is directly connected to the A-phase terminal 31 directly below it. The other A-phase terminal 31 is connected to the lower end of the vertical branch busbar 5 through the horizontal branch busbar 7.

[0043] When connecting phase B, use the following method: Figure 9 As shown in the connection method, the B-phase main busbar 1 is connected to the vertical branch busbar 5 through the tee 6, and the two B-phase terminals 31 are respectively connected to the lower end of the vertical branch busbar 5 through the horizontal branch busbar 7.

[0044] When connecting phase C, the following method is also used: Figure 8 As shown in the connection method, the C-phase main busbar 1 is connected to the vertical branch busbar 5 through the tee 6. The lower end of the vertical branch busbar 5 is directly connected to the C-phase terminal 31 directly below it. The other C-phase terminal 31 is connected to the lower end of the vertical branch busbar 5 through the horizontal branch busbar 7.

[0045] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A busbar connection structure for an open-type combined electrical appliance, characterized in that: It includes a horizontally extending three-phase main busbar (1) and several support components (2) arranged along the extension direction of the three-phase main busbar (1). The three-phase main busbar (1) is connected to the three-phase terminals (31) of the combined electrical appliance (3). The support component (2) includes a support frame (21) and three insulating posts (22) fixed on the support frame. The three-phase main busbar (1) is respectively connected to the three insulating posts (22). The insulating posts (22) are provided with busbar fixing parts (23) for fixing the main busbar (1).

2. The busbar connection structure for an open-type combined electrical appliance according to claim 1, characterized in that: The support frame (21) includes a support column (211), the lower end of which is fixedly connected to a base plate (213). The base plate is fixed to the ground by anchor bolts. The upper end of the support column (211) is fixedly connected to a support beam (212). The support beam extends along the arrangement direction of the three-phase main busbar (1). Three insulating columns (22) are distributed along the length of the support beam (212) and fixedly connected to the support beam (212).

3. The busbar connection structure for an open-type combined electrical appliance according to claim 1 or 2, characterized in that: The busbar fixing component (23) includes a mounting plate (232) fixed to the top of the insulating column (22), and two clamps (231) are fixed to the top of the mounting plate (232), which are distributed along the extension direction of the main busbar (1).

4. The busbar connection structure for an open-type combined electrical appliance according to claim 1, characterized in that: The main busbar (1) is connected to a vertical branch busbar (5) via a tee (6). The vertical branch busbar (5) and the main busbar (1) are arranged vertically. The end of the vertical branch busbar (5) away from the main busbar (1) is connected to the same phase terminal (31).

5. The busbar connection structure for an open-type combined electrical appliance according to claim 4, characterized in that: A horizontal branch busbar (7) is connected to the terminal block (31). The horizontal branch busbar (7) and the vertical branch busbar (5) are arranged vertically. The end of the horizontal branch busbar (7) away from the terminal block (31) is connected to the end of the vertical branch busbar (5) away from the main busbar (1) through a tee (6).

6. The busbar connection structure for an open-type combined electrical appliance according to claim 5, characterized in that: Angle plate (4) is fixedly connected to the upper end of the terminal block (31), and the branch busbar is fixedly connected to the angle plate (4).

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