CN219760586U - General economic type inter-cabinet bus bridge connection structure - Google Patents

Abstract

The utility model discloses a general economic inter-cabinet bus bridge connection structure which comprises bases at the tops of two tray cabinets, a base frame, an insulator bracket and a three-phase bus group, wherein the base frame is arranged between the two bases and is flush with the bases, the insulator bracket is respectively arranged on the front wall and the rear wall in the base in an upper row and a lower row, the three-phase bus group is horizontally arranged in the base frame after vertically extending to the insulator bracket from the upper parts of the two tray cabinets in the base, the three-phase bus group is distributed in a delta shape in the front and the rear in the base frame when being seen from the side direction in the base frame, and the problem that the vertical height of the inter-cabinet lateral bus bridge structure is high, the environmental adaptability is low, the material consumption is large, and the same-direction phase sequence is difficult to arrange is solved by adopting the inter-cabinet lateral bus bridge connection scheme, so that the standardized bus installation and cost reduction are achieved.

Description

General economic type inter-cabinet bus bridge connection structure

Technical Field

The utility model relates to the technical field of bus devices of power transmission and distribution equipment, in particular to a general economic inter-cabinet bus bridge connection structure.

Background

With the development of economic construction, the electricity demand is increased more and more. When the distribution room space is limited and a tray cabinet is required to be arranged in a span mode, the connection between the cabinets needs to be conducted by a closed bus bridge to play a bridging role. In order to ensure the through connection of the cabinet tops of the bus bridge in the current industry, buses in a tray cabinet need to extend upwards to the cabinet tops for treatment and are sequentially arranged in a step shape according to the phase sequence; in order to ensure that the phase sequences of the distribution systems coincide, the branch buses in the two-sided cabinet where the bus bridge is located need to be selected to perform phase modulation treatment on one side, such as: the left side cabinet busbar phase sequences are A, B, C and the right side cabinet busbar phase sequences are C, B, A respectively when the front of the cabinet is seen from left to right; to sufficiently ensure safe operation after the bus bar is energized, the pitch in the height space of the bus bar arrangement in this solution is relatively large as shown in fig. 1. After the project is completed, the body height of the bus bridge is generally about 1.2-1.5 m. Therefore, the use of the scheme is necessary to ensure that the high space of the on-site distribution room is abundant, and the space from the top of the cabinet to the non-shelter of the roof is at least more than 1.5 m. A distribution room with a part of layers at a lower level cannot be used in the scheme; by using the scheme of the bus bridge, the box body is made of a metal plate for manufacturing the shell, copper buses in the bridge and the like, so that the economy is low, and the product has no competitive advantage. Another mature scheme, such as a bus bridge connection manner between a first switch cabinet and a second switch cabinet in a T-type bus bridge structure disclosed in patent document with publication number CN207409809U, is simplified to fig. 2, and when the scheme is adopted, in order to ensure that the distribution systems are matched, in a production stage of a cabinet, branch buses in two side cabinets where the bus bridge is located need to be selected to perform phase modulation treatment, for example: the left side cabinet busbar phase sequences are C, B, A and the right side cabinet busbar phase sequences are A, B, C respectively when the front of the cabinet is seen from left to right; in order to ensure the through connection of the cabinet tops of the bus bridges, the buses in the tray cabinet need to extend upwards from the cabinet tops and horizontally extend for a certain distance in the front (rear) direction of the cabinet, and then the transverse connection is realized through a switching box body with a three-way structure; the conventional condition in the bus bridge does not consider the phase modulation of the bus, when the bus in the cabinet is not phase modulated, and the bus bridge inner branch is required to be made into a phase modulation scheme, the bus bridge shell is required to be made higher in real time at the moment, namely the H1 and H2 values can be changed as appropriate; the bus bridge shell of the scheme is generally about 1m in elevation, two bridge bobbins are required to be added in the horizontal direction although the bus bridge shell is shorter than the former scheme, and some arrangement in a power distribution room needs to be considered in real time, such as whether other shielding objects such as a lighting ceiling lamp, a cable bridge and the like exist at the passing position of the bus bridge, if the shielding objects need to be communicated with the site in time, and the shielding objects are subjected to moderate position shifting treatment after the bus bridge is installed; the scheme of the bus bridge is used, the box body is manufactured with the same defects of the scheme, namely, the consumption of consumable materials is large, the metal plates used for manufacturing the shell, copper buses in the bridge and the like are included, the economy is low, and the product has no competitive advantage. In addition, the phase modulation processing of the two schemes is contrary to the basic principle that the phase modulation processing is required to be arranged left, middle and right in the face of the phase sequence of the switch cabinet ABC in the electric power standard, in order to solve the problem, the novel homodromous inter-cabinet bus bridge structure disclosed in the patent document with the bulletin number of CN210669002U comprises an A1 phase busbar, an A2 phase busbar, a B1 phase busbar, a B2 phase busbar, a C1 phase busbar and a C2 phase busbar which are positioned in a bus bridge shell, wherein the A1 phase busbar, the B1 phase busbar and the C1 phase busbar are sequentially heightened from outside to inside, the lower ends of the A2 phase busbar, the B2 phase busbar and the C2 phase busbar are respectively connected with corresponding cabinet top rows on the G2 cabinet from inside to outside, and the lower ends of the A2 phase busbar and the C2 phase busbar are respectively connected with the corresponding cabinet top rows on the G2 cabinet. The device can effectually prevent that the cross appears in A looks transversal row, B looks transversal row and C looks transversal row and A1 looks busbar, A2 looks busbar, B1 looks busbar, B2 looks busbar, C1 looks busbar and C2 looks busbar to can effectually guarantee the normal use of device.

However, the three-phase busbar is arranged from top to bottom in sequence, so that a higher busbar arrangement space is still needed, the requirements on the roof structure and the layer height are limited, and the manufacturing cost of the box body is high.

Disclosure of Invention

Aiming at the problems of high vertical height, low environmental adaptability, high material consumption and difficult arrangement of the same-direction phase sequence of a bus bridge structure in the prior art, the utility model provides a general economic inter-cabinet bus bridge connection structure, and solves the problems.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a general economic type inter-cabinet bus bridge connection structure, includes the base at two dish cabinet tops, the bed frame on the top is neat with the base in the middle of two bases, insulator support and three-phase busbar group, its characterized in that: the three-phase bus groups are horizontally arranged in the base frame after vertically extending to the insulator bracket from the upper parts of the two tray cabinets in the base seat, and are distributed in a 'delta shape' front and back when seen from the side direction in the base frame.

Preferably, each phase bus group of the three-phase bus group comprises a transition branch bus and a horizontal bus, and the horizontal bus and the vertical bus are connected at the insulator bracket.

Preferably, the transition branch bus comprises an inverted L-shaped bus, one ends of two inverted L-shaped buses in phase are connected with the horizontal bus, and the other ends of the two inverted L-shaped buses are connected with a cabinet top bus bar.

Preferably, the transition branch bus comprises a blunt Z-shaped bus, one ends of two blunt Z-shaped buses in phase are connected with the horizontal bus, and the other ends of the two blunt Z-shaped buses are connected with the cabinet top bus bar.

Preferably, the transition branch bus comprises straight buses, one ends of two straight buses in the same phase are connected with the horizontal buses, and the other ends of the two straight buses are connected with a cabinet top bus bar.

Preferably, the inverted L-shaped bus connecting insulator bracket end is further provided with a vertical bend.

Preferably, the insulator bracket uses an epoxy resin high-voltage insulator.

Preferably, the base can be made of a plurality of bases with different horizontal shapes stacked one above the other.

Preferably, the base is provided with a heat dissipation hole.

Preferably, the base frame is provided with a heat dissipation hole.

The universal economic inter-cabinet bus bridge connection structure provided by the scheme has the advantages that the equidirectional phase sequence arrangement is simple and does not exclude the reverse arrangement, the universality is strong, the specification and the shape of the bus bars in the bridge are uniform and have no differentiation, the installation process is light, the bus bars are easy to operate, and excessive professional skill training is not needed; the formed bus bridge box body has small appearance, small space margin requirement on the distribution room, the whole elevation can be controlled to be about 1m, no obvious convex is formed in the front-back depth direction, the arrangement of other objects in the distribution room is not influenced, and the bus bridge box body can be perfectly suitable for the environment of the on-site distribution room; the different phases can meet the requirements of busbar penetration connection under different current levels through proper gap design adjustment, and the electrical safety and insulation performance fully meets the standards; the consumption of shell consumable is few, and copper busbar is comparatively standard and standardized, does not have extravagant, possesses very strong economic suitability.

Drawings

FIG. 1 is a schematic diagram of a prior art switchgear lateral connection busbar bridge solution, a) a front view, b) a side sectional view from A-A, c) a top view;

FIG. 2 is a schematic diagram of a prior art switchgear lateral connection busbar bridge solution, a) being a front view, b) being A-A side sectional view, c) being a top view;

FIG. 3 is a schematic view of one embodiment of a side-to-side delta connection busbar bridge structure for a switchgear cabinet of the present utility model, a) being a front view, b) being A-A side sectional view;

FIG. 4 is a schematic perspective view of an example busbar arrangement of a lateral delta-connection busbar bridge structure between switchgear cabinets of the present utility model;

FIG. 5 is a schematic view of another embodiment of a side-to-side delta connection busbar bridge structure for switchgear cabinets of the present utility model, a) being a front view, b) being A-A side sectional view;

wherein, 1-roof, 11-girder, 2-ground, 3-base, 4-bed frame.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. In the accompanying drawings: h1 represents the height of the base, H2 represents the height of the base, H3 represents the distance from the topmost insulator to the top of the base, b represents the distance from the upper row of insulators to the top of the base, b1 represents the distance between the upper row of insulators and the lower row of insulators, W represents the depth, and Y represents the distance between cabinets.

The embodiment provides a technical scheme that: the utility model provides a general economic type inter-cabinet bus bridge connection structure, includes two bases 3 at two cabinet tops, two base frames 4 in the middle of two bases 3 and the base 3 is on the same top, two sets of insulator support and three-phase busbar group, two cabinet installations on the ground 2 below the girder 11 on roof 1, base 3 can be made by overlapping from top to bottom by a plurality of bases 3 of different horizontal appearances, base frame 4 also can use more multiunit in order to adapt to different inter-cabinet distance Y, every insulator support of group is nine, divides upper and lower two rows to install respectively on the inside front and back wall of base 3, the insulator support is ◥ appearance "article font" distribution from the side direction, and the front wall is arranged upper and lower two rows and is each arranged three, and the back wall is arranged one row of three in top, and is high in the base frame 3 from two top vertical extension to insulator support department back in the level, three-phase busbar group is arranged in base frame 4 after the three-phase is seen to be the inside to take shape of article font.

Each phase of bus group comprises a transition branch bus and a horizontal bus, and the horizontal bus and the vertical bus are connected at the insulator bracket. The transition branch bus comprises an inverted L-shaped bus, the horizontal bus is connected with one ends of two inverted L-shaped buses in phase, the ends of the inverted L-shaped buses, which are connected with the insulator bracket, are also provided with vertical bends, and the other ends of the two inverted L-shaped buses are connected with a cabinet top bus bar; the transition branch buses comprise blunt Z-shaped buses, the horizontal buses are connected with one ends of two blunt Z-shaped buses in the same phase, and the other ends of the two blunt Z-shaped buses are connected with a cabinet top bus bar; the transition branch bus comprises straight buses, one ends of two straight buses in the same phase are connected with the horizontal buses, and the other ends of the two straight buses are connected with a cabinet top bus bar.

Fig. 3 and 4 show an embodiment of the homeotropic phase sequence arrangement: after branch bus bars in the switch cabinet extend out of the cabinet top, the bus bar phase sequence can be executed conventionally, namely: the phase sequence of the buses is A, B, C respectively when the front of the cabinet is seen from left to right; the phase modulation matters in any splicing process do not need to be considered additionally, and the phase modulation matters are specifically as follows: seen from the front of the cabinet in the base 3 of the two switch cabinet tops, the left side A phase uses an inverted L-shaped bus, is connected with a horizontal bus through a lower row left insulator bracket on the front wall, the middle B phase uses a blunt Z-shaped bus, is connected with the horizontal bus through an upper row middle insulator bracket on the front wall, the right side C phase uses a straight bus, and is connected with the horizontal bus through an upper row right insulator bracket on the rear wall.

Fig. 5 shows another embodiment of the reverse phase sequence arrangement, which ensures orderly penetration of the busbar bridge at the cabinet top by adjusting the mounting position of the transition branch busbar in the bridge, in particular, even in the case of phase modulation of branch busbar in the earlier cabinet, in which: the left side phase A in the base 3 of the left side switch cabinet top uses an inverted L-shaped bus, the horizontal bus is connected through a lower row left side insulator bracket on the front wall, the other end of the horizontal bus is connected to a lower row right side insulator bracket on the front wall in the base 3 of the right side switch cabinet top, and the horizontal bus is connected to the right side phase A through the inverted L-shaped bus; the middle B phase uses a blunt Z-shaped bus, and is connected with a horizontal bus through an upper row middle insulator bracket on the front wall; the right side C phase uses straight bars, the horizontal bus is connected through an upper row right side insulator bracket on the rear wall, the other end of the horizontal bus is connected to an upper row left side insulator bracket on the rear wall in the base 3 of the right side switch cabinet top, and the horizontal bus is connected to the left side C phase through the straight bars.

The distribution of the 'delta' shape of the insulator is not limited to ◥ samples, other delta-shaped arrangement forms such as ◤ samples can be used, and the transition branch bus can be changed correspondingly.

The insulator bracket uses epoxy resin high-voltage insulators, and ensures that different phases keep enough safe insulation intervals, such as at least 130mm or more, by arranging enough upper row insulators to the top interval b of the base frame and equidistant interval b1 between the upper row insulators and the lower row insulators.

The base 3 and the base frame 4 can be provided with a plurality of groups of heat dissipation holes so as to play roles of heat dissipation and pressure relief of the bus bar in operation.

In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (10)

1. The utility model provides a general economic inter-cabinet bus bridge connection structure, includes base (3) at two cabinet tops, base frame (4), insulator support and three-phase busbar group that are on the same top with base (3) in the middle of two bases (3), its characterized in that: the three-phase bus groups are horizontally arranged in the base frame (4) after vertically extending to the insulator bracket from the upper parts of the two tray cabinets in the base frame (3), and are distributed in a 'delta' shape in the front and back direction when being seen from the inner side direction of the base frame.

2. The universal economic inter-cabinet bus bridge connection structure as set forth in claim 1, wherein: each phase bus group of the three-phase bus group comprises a transition branch bus and a horizontal bus, and the horizontal bus and the vertical bus are connected at an insulator bracket.

3. The universal economic inter-cabinet bus bridge connection structure as set forth in claim 2, wherein: the transition branch bus comprises inverted L-shaped buses, one ends of two inverted L-shaped buses in the same phase are connected with the horizontal buses, and the other ends of the two inverted L-shaped buses are connected with a cabinet top bus bar.

4. The universal economic inter-cabinet bus bridge connection structure as set forth in claim 2, wherein: the transition branch bus comprises a blunt Z-shaped bus, one ends of two blunt Z-shaped buses in the same phase are connected with the horizontal bus, and the other ends of the two blunt Z-shaped buses are connected with the cabinet top bus bar.

5. The universal economic inter-cabinet bus bridge connection structure as set forth in claim 2, wherein: the transition branch bus comprises straight buses, one ends of two straight buses in the same phase are connected with the horizontal buses, and the other ends of the two straight buses are connected with a cabinet top bus bar.

6. A universal economical inter-cabinet bus bridge connection as set forth in claim 3, wherein: the inverted L-shaped bus connecting insulator bracket end is further provided with vertical bending.

7. The universal economic inter-cabinet bus bridge connection structure as set forth in claim 1, wherein: the insulator bracket uses an epoxy resin high-voltage insulator.

8. The universal economic inter-cabinet bus bridge connection structure as set forth in claim 1, wherein: the base (3) can be made of a plurality of bases (3) with different horizontal shapes which are overlapped up and down.

9. The universal economic inter-cabinet bus bridge connection structure as set forth in claim 1, wherein: the base is provided with a heat dissipation hole.

10. The universal economic inter-cabinet bus bridge connection structure as set forth in claim 1, wherein: the base frame (4) is provided with a heat dissipation hole.