A busbar bridge structure and a busbar bridge system

Abstract

The present invention provides a busbar bridge structure and a busbar bridge system, which include a vertical bridge body and a horizontal bridge body. Among them, the horizontal bridge body includes a phase-A transfer busbar and a phase-C transfer busbar. In the busbar bridge structure of this structure, the transfer busbars for phase conversion are arranged on the horizontal bridge body. To ensure the safety distance, the phase-A transfer busbar and the phase-C transfer busbar are arranged at intervals vertically in the horizontal bridge body. When converting phases, the upper and lower spaces of the horizontal bridge body are occupied. The horizontal bridge body is located above the vertical bridge body, and the busbars of each phase in the vertical bridge body part all extend vertically upward, and the depth of the vertical bridge body in the front-back direction is small. When the vertical bridge body is surrounded by a box body and installed above the switch cabinet, its depth is small, and the box body base can be completely supported on the top surface of the switch cabinet below, avoiding protruding out of the switch cabinet and affecting the normal opening of other top pressure relief plates of the switch cabinet, and ensuring the normal pressure relief of adjacent switch cabinet compartments.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage switch cabinets, and particularly to a busbar bridge structure and a busbar bridge system. Background Art

[0002] Due to the limitation of the space of the on-site power distribution room, switchgear often needs to be arranged in two rows or more. At this time, if it is necessary to connect the busbars of two rows or more switchgear, solutions such as busbar bridges, power cables, or tubular busbars are often used for connection. Among them, the connection method of the busbar bridge is the most economical and safe. According to regional or technical agreement requirements, facing the switchgear, the three phases A, B, and C are arranged in the order from left to right. When two switchgear are arranged face to face, if the busbar bridge is directly connected to the two face-to-face switchgear without phase conversion, the phase sequence of the busbars of one of the switchgear will be reversed. Therefore, to meet regional or technical agreement requirements, for face-to-face switchgear, when designing the copper busbars of the busbar bridge, phase conversion is required, that is, the A-phase copper busbar is switched to the C phase, the C-phase copper busbar is switched to the A phase, and the B-phase copper busbar is in the middle position and does not need to be phase-converted.

[0003] A Chinese patent document with the publication number of CN109728509A discloses a busbar bridge assembly structure with a phase conversion function, which is arranged in an internal space surrounded by a busbar bridge housing, a phase conversion upper housing, a phase conversion lower housing, and a phase conversion front vertical part housing, and the four parts of the housing are designed in a segmented combination manner. The busbar bridge includes a vertical bridge body arranged in the phase conversion lower housing, and phase conversion is realized by connecting the same-phase busbars on both sides through phase conversion copper busbars in the vertical bridge body. To ensure sufficient safety distance in the vertical bridge body, the phase conversion copper busbars need to first extend a certain distance away from one side of the busbar and then bend towards the same-phase busbar on the other side, which results in a deep front-back extension depth of the phase conversion copper busbars, causing the depth of the vertical bridge body in the phase conversion part to be deeper than that of the vertical bridge body before phase conversion. The extra depth of the vertical bridge body abuts against the pressure relief plate on the top of other compartments of the switchgear, which will affect the normal opening of the pressure relief plate of this compartment. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the busbar bridge with a phase conversion function in the prior art has a deep depth in the phase conversion part and affects the pressure relief of other compartments.

[0005] For this purpose, the present invention provides a busbar bridge structure, including

[0006] A vertical bridge body, which includes an A-phase lead-out row, a B-phase lead-out row, a C-phase lead-out row arranged in sequence from left to right, an A-phase corner row connected to the A-phase lead-out row, a B-phase corner row connected to the B-phase lead-out row, and a C-phase corner row connected to the C-phase lead-out row;

[0007] The A-phase lead-out row, B-phase lead-out row, and C-phase lead-out row all extend vertically upward; the A-phase corner row, B-phase corner row, and C-phase corner row all extend vertically upward and are horizontally bent at their respective tops toward the first direction.

[0008] A horizontal bridge body, which includes an A-phase transfer row and a C-phase transfer row; one end of the A-phase transfer row is connected to the horizontal bending part of the A-phase corner row, and the other end extends toward the side where the C-phase lead-out row is located; one end of the C-phase transfer row is connected to the horizontal bending part of the C-phase corner row, and the other end extends toward the side where the A-phase lead-out row is located; the A-phase transfer row and the C-phase transfer row are arranged at an upper and lower interval.

[0009] Optionally, for the above busbar bridge structure, the horizontal bridge body further includes an A-phase horizontal row connected to the horizontal bending part of the A-phase corner row and a B-phase horizontal row connected to the horizontal bending part of the B-phase corner row; one end of the A-phase transfer row is connected to the A-phase horizontal row.

[0010] The horizontal bending part of the A-phase horizontal row or the C-phase corner row is at the same height as the B-phase horizontal row, and the middle part of the B-phase horizontal row extends downward obliquely to form a B-phase inclined row.

[0011] Optionally, for the above busbar bridge structure, the A-phase horizontal row is at the same height as the B-phase horizontal row, and the C-phase transfer row is arranged closer to the C-phase lead-out row relative to the A-phase transfer row.

[0012] Optionally, for the above busbar bridge structure, the horizontal bridge body further includes a C-phase horizontal row connected to the C-phase transfer row, and the C-phase horizontal row is parallel to the A-phase horizontal row;

[0013] The bottom of the B-phase inclined row extends toward the horizontal direction to form a B-phase extension row; the C-phase horizontal row is at the same height as the B-phase extension row.

[0014] Optionally, for the above busbar bridge structure, the horizontal bridge body further includes an A-phase inclined row connected to the A-phase transfer row, the A-phase inclined row inclines downward and its bottom end extends toward the horizontal direction to form an A-phase extension row, and the A-phase extension row is at the same height as the C-phase horizontal row.

[0015] Optionally, for the above busbar bridge structure, it further includes a vertical busbar bridge box body and a horizontal busbar bridge box body; the vertical busbar bridge box body covers the outside of the vertical bridge body, and the horizontal busbar bridge box body covers the outside of the horizontal bridge body;

[0016] The vertical busbar bridge box body is provided with a first support assembly for supporting the vertical bridge body, and the horizontal busbar bridge box body is provided with a second support assembly for supporting the horizontal bridge body.

[0017] Optionally, for the above-mentioned busbar bridge structure, a first busbar sleeve plate through which three-phase outgoing buses pass is provided at the bottom of the vertical busbar bridge box body, and a through hole adapted to communicate with the switchgear is provided on the side of the first busbar sleeve plate; and / or

[0018] A second busbar sleeve plate through which the horizontal bridge body passes is provided at the connection between the vertical busbar bridge box body and the horizontal busbar bridge box body.

[0019] Optionally, for the above-mentioned busbar bridge structure, a pressure relief plate is further provided at the top of the vertical busbar bridge box body.

[0020] Optionally, for the above-mentioned busbar bridge structure, heat dissipation holes are provided on both the vertical busbar bridge box body and the horizontal busbar bridge box body; the heat dissipation holes are arranged downward.

[0021] The present invention provides a busbar bridge system, including the busbar bridge structure described in any one of the above and switchgears provided at both ends of the bottom of the busbar bridge structure.

[0022] The technical solution of the present invention has the following advantages:

[0023] 1. For the busbar bridge structure provided by the present invention, the transfer busbars for phase conversion are arranged on the horizontal bridge body. To ensure the safety distance, the A-phase transfer busbar and the C-phase transfer busbar are arranged at intervals up and down in the horizontal bridge body. When changing phases, the upper and lower spaces of the horizontal bridge body are occupied. The horizontal bridge body is located above the vertical bridge body, and the busbars of each phase in the vertical bridge body part all extend vertically upward. The depth of the vertical bridge body in the front-rear direction (the front-rear direction of the switchgear when facing the switchgear, that is Figure 1 the direction indicated by the arrow in the figure) is small. When the box body is enclosed outside the vertical bridge body and the vertical bridge body is installed above the switchgear, its depth is small, and its box body base can be completely supported on the top surface of the switchgear below, avoiding protruding out of the switchgear and affecting the normal opening of other top pressure relief plates of the switchgear, and ensuring the normal pressure relief of adjacent switchgear compartments.

[0024] 2. For the busbar bridge system provided by the present invention, the depth of the busbar bridge structure in the busbar bridge system in the front-rear direction of the switchgear is small, which can ensure the normal pressure relief of adjacent switchgear compartments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic diagram of the busbar arrangement of the busbar bridge structure provided by the embodiment of the present invention;

[0027] Figure 2 Schematic diagram of the busbar bridge structure provided by the embodiment of the present invention;

[0028] Figure 3 Schematic diagram of the busbar bridge structure provided by the embodiment of the present invention;

[0029] Figure 4 Schematic diagram of the busbar bridge structure provided by the embodiment of the present invention;

[0030] Figure 5 Overall structure schematic diagram of the busbar bridge structure provided by the embodiment of the present invention;

[0031] Figure 6 Overall structure schematic diagram of the busbar bridge structure provided by the embodiment of the present invention;

[0032] Figure 7 Top view of the busbar arrangement of the busbar bridge structure provided by the embodiment of the present invention;

[0033] Figure 8 Schematic diagram of the heat dissipation hole;

[0034] Figure 9 Schematic diagram of the heat dissipation hole.

[0035] Description of reference numerals:

[0036] 1 - Phase A lead-out row; 2 - Phase B lead-out row; 3 - Phase C lead-out row; 4 - Phase A corner row; 5 - Phase B corner row; 6 - Phase C corner row; 7 - Phase B horizontal row; 8 - Phase A horizontal row; 9 - Phase A transfer row; 10 - Phase A inclined row; 11 - Phase C transfer row; 12 - Phase C horizontal row; 13 - Busbar support; 14 - Busbar bushing; 15 - First busbar bushing plate; 16 - Second busbar bushing plate; 17 - Phase B inclined row; 18 - Phase B extension row; 19 - Heat dissipation hole; 20 - Phase A extension row; 21 - Horizontal busbar bridge box; 211 - First top cover plate; 212 - First side plate; 22 - Vertical busbar bridge box; 221 - Second side plate; 222 - Second top cover plate; 223 - Pressure relief plate; 224 - Through hole; 23 - Switchgear top cover; 24 - Installation beam. Detailed implementation manners

[0037] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] Embodiment 1

[0042] This embodiment provides a busbar bridge structure, as Figures 1 to 4 shown, which includes a vertical bridge body and a horizontal bridge body.

[0043] Among them, the vertical bridge body includes an A-phase lead-out row 1, a B-phase lead-out row 2, a C-phase lead-out row 3 arranged in sequence from left to right (facing the switchgear direction), an A-phase corner row 4 connected to the A-phase lead-out row 1, a B-phase corner row 5 connected to the B-phase lead-out row 2, and a C-phase corner row 6 connected to the C-phase lead-out row 3. The A-phase lead-out row 1, B-phase lead-out row 2, and C-phase lead-out row 3 are led out from the inside of the switchgear and all extend vertically upward. The A-phase corner row 4, B-phase corner row 5, and C-phase corner row 6 all extend vertically upward and form a horizontal bending portion by horizontally bending toward the first direction at their respective tops; the bottoms of the vertical segments of the A-phase corner row 4, B-phase corner row 5, and C-phase corner row 6 are connected to their corresponding lead-out rows.

[0044] The horizontal bridge body includes an A-phase transfer row 9 and a C-phase transfer row 11; one end of the A-phase transfer row 9 is connected to the horizontal bending portion of the A-phase corner row 4, and the other end extends toward the side where the C-phase lead-out row 3 is located; one end of the C-phase transfer row 11 is connected to the horizontal bending portion of the C-phase corner row 6, and the other end extends toward the side where the A-phase lead-out row 1 is located; the A-phase transfer row 9 and the C-phase transfer row 11 are arranged at an upper and lower interval.

[0045] For the busbar bridge structure of this structure, the transfer busbars for phase conversion are arranged on the horizontal bridge body. To ensure the safety distance, the phase A transfer busbar 9 and the phase C transfer busbar 11 are arranged at intervals vertically within the horizontal bridge body. When converting phases, the upper and lower spaces of the horizontal bridge body are occupied. The horizontal bridge body is located above the vertical bridge body, and the busbars of each phase in the vertical bridge body part all extend vertically upward. The depth in the front-back direction of the vertical bridge body (the front-back direction of the switchgear when facing the switchgear, that is, Figure 1 the direction indicated by the arrow in

[0046] See Figure 1 ), the horizontal bridge body also includes a phase A horizontal busbar 8 connected to the horizontal bending part of the phase A corner busbar 4, a phase B horizontal busbar 7 connected to the horizontal bending part of the phase B corner busbar 5, a phase C horizontal busbar 12, and a phase A inclined busbar 10.

[0047] The phase A horizontal busbar 8 and the phase B horizontal busbar 7 are at the same height, and the horizontal bending part of the phase C corner busbar 6 is lower than the phase B horizontal busbar 7. One end of the phase A transfer busbar 9 far from the phase A lead-out busbar 1 is connected to the phase A horizontal busbar 8, and see Figure 7 ), the phase A transfer busbar 9 is perpendicular to the phase A horizontal busbar 8, and the end face of the phase A transfer busbar 9 far from the phase A horizontal busbar 8 is flush with the side end face of the phase C lead-out busbar 3. See Figure 1 ), one end of the phase A inclined busbar 10 is connected to the phase A transfer busbar 9, and the other end extends downward obliquely and its bottom end extends horizontally to form a phase A extended busbar 20.

[0048] One end of the phase B horizontal busbar 7 close to the phase B lead-out busbar 2 is connected to the horizontal bending part of the phase B corner busbar 5, and the other end extends horizontally away from the phase B lead-out busbar 2. The middle part of the phase B horizontal busbar 7 extends downward obliquely to form a phase B inclined busbar 17. The phase B inclined busbar 17 extends downward to the bottom of the phase A horizontal busbar 8. The bottom of the phase B inclined busbar 17 extends horizontally in the direction parallel to the phase B horizontal busbar 7 to form a phase B extended busbar 18. The phase B extended busbar 18 is located below the phase A transfer busbar 9 to ensure the safety distance.

[0049] The phase C transfer busbar 11 is perpendicular to the horizontal bending part of the phase C corner busbar 6. The phase C transfer busbar 11 is arranged closer to the plane where the lead-out busbars of each phase are located compared with the phase A transfer busbar 9 (that is, Figure 1 in Figure 7 the phase C transfer busbar 11 is arranged to the left of the phase A transfer busbar 9 compared with Figure 7The end face of the horizontal bending portion of the C-phase transfer row 11 away from the C-direction corner row is flush with the side end face of the A-phase lead row 1. The C-phase horizontal row 12 is parallel to the A-phase horizontal row 8. One end of the C-phase horizontal row 12 close to the C-phase lead row 3 is connected to the C-phase transfer row 11, and the other end extends horizontally away from the A-phase lead row 1. Figure 1 , Figure 4 and Figure 7 The end face of the C-phase horizontal row 12 is flush with the end faces of the A-phase extension row 20 and the B-phase extension row 18, which makes it convenient to connect the C-phase horizontal row 12, the A-phase extension row 20 and the B-phase extension row 18 through the copper bar. The copper bar can extend vertically downward to connect the switch cabinet on the opposite side, reducing the front and rear depth of the opposite vertical bridge body, and ensuring the normal pressure relief of the adjacent switch cabinet compartments.

[0050] See also Figure 1 , Figure 4 and Figure 7 The top of the B-phase inclined row 17 is located on the right side of the C-phase transfer row 11, and the bottom of the B-phase inclined row 17 is located on the left side of the A-phase transfer row 9, so that the B-phase inclined row 17 is away from the C-phase transfer row 11 and the A-phase transfer row 9 to ensure a safe distance.

[0051] The heights of the A-phase horizontal bar 8, the B-phase horizontal bar 7 and the A-phase transfer bar 9 are the same, so it is convenient to uniformly set a support assembly above them to support the A-phase horizontal busbar and the B-phase horizontal busbar. The C-phase transfer bar 11, the C-phase horizontal bar 12 and the B-phase extension bar 18 have the same heights, so it is convenient to uniformly set a support assembly below them to support the C-phase horizontal busbar and the B-phase extension bar 18.

[0052] The height of the A-phase horizontal row 8 is the same as that of the B-phase horizontal row 7. When changing phases, the height of the C-phase transfer row 11 only needs to be lower than the height of the A-phase horizontal row 8 and the B-phase horizontal row 7, which is beneficial to reduce the vertical height of the horizontal bridge body, and the overall height of the busbar bridge is relatively low. If the busbar bridge changes phases on the vertical bridge body, in order to ensure a safe distance, the height of the vertical bridge body is relatively high, and the required space on the top of the switch cabinet is relatively large. When the height of the ceiling of the power distribution room is relatively low, the busbar bridge structure that changes direction in the vertical bridge body is difficult to install. The busbar bridge provided by the present invention has a low overall height and can also be installed when the height of the ceiling of the power distribution room is relatively low.

[0053] See also Figure 7 The total width of the busbars of each phase before and after commutation is inconvenient, and the overall width of the busbar bridge is small. If other busbar bridges are installed on the side of the busbar bridge structure, the busbar bridges on its side can be effectively avoided to avoid interference with adjacent busbar bridges.

[0054] See also Figure 5 and Figure 6, the busbar bridge structure further includes a vertical busbar bridge box body 22 and a horizontal busbar bridge box body 21; the vertical busbar bridge box body 22 covers the outside of the vertical bridge, and the horizontal busbar bridge box body 21 covers the outside of the horizontal bridge. The vertical busbar bridge box body 22 includes a support frame, second side plates 221 covering the four sides of the support frame, and a second top sealing plate 222 provided at the top of the support frame. A pressure relief plate 223 is installed in the middle of the second top sealing plate 222 through explosion-proof screws.

[0055] At the bottom of the vertical busbar bridge box body 22, there is a first busbar sleeve plate 15 for the three-phase outgoing busbars to pass through. Three relief holes are opened on the first busbar sleeve plate 15, and three busbar sleeves 14 are respectively fixedly installed through the three relief holes. The three outgoing busbars pass through the busbar sleeves 14 to isolate adjacent outgoing busbars and ensure a safe distance.

[0056] Through holes 224 communicating with the switch cabinet are left on both sides of the first busbar sleeve plate 15. At the connection between the vertical busbar bridge box body 22 and the horizontal busbar bridge box body 21, there is a second busbar sleeve plate 16 for the horizontal bridge to pass through. Three relief holes for the horizontal busbars to pass through are opened on the second busbar sleeve plate 16, and busbar sleeves 14 are respectively fixedly installed in the three relief holes. The horizontal bending parts of the A-phase horizontal row 8, B-phase horizontal row 7, and C-phase corner row 6 respectively pass through the busbar sleeves 14 to ensure a safe distance. The materials of the first busbar sleeve plate 15 and the second busbar sleeve plate 16 are both aluminum plates or stainless steel plates, which can suppress the generation of eddy currents while ensuring the safe distance between the busbar and the box body and the switch cabinet body.

[0057] The horizontal busbar bridge box body 21 includes a support frame and first side plates 212 covering three sides of the support frame. The top of the horizontal busbar bridge box body 21 is a first top sealing plate 211. A plurality of heat dissipation holes 19 are uniformly opened on the first side plates 212 and the second side plates 221. Refer to Figure 8 and Figure 9 , the wall surfaces of the first side plates 212 and the second side plates 221 protrude outward to form arc-shaped protrusions. The bottom of the arc-shaped protrusions is the heat dissipation hole 19, and the heat dissipation hole 19 is arranged downward, which can ensure heat dissipation and play a dust-proof role at the same time.

[0058] When the busbar bridge structure is installed on the switch cabinet, the hot air flow generated inside the switch cabinet during operation can flow into the vertical busbar bridge box body 22 through the through holes 224 and then be discharged through the heat dissipation holes 19 on the second side plates 221, effectively solving the heat dissipation problem of the switch cabinet. The switch cabinet is connected to the vertical busbar bridge box body 22 through the through holes 224. When an arc explosion occurs inside the switch cabinet, the impact air flow inside it pours upward instantly, flows through the through holes 224 into the vertical busbar bridge box body 22 and impacts the pressure relief plate 223 at the top. The pressure relief plate 223 normally opens under the action of the impact force, ensuring normal pressure relief of the switch cabinet and the busbar bridge structure.

[0059] The support frames of the vertical busbar bridge box 22 and the horizontal busbar bridge box 21 are welded with rigid profiles and encapsulated by side panels and top panels, so the overall strength of the box is high. The busbar bridge structure includes two parts, the vertical busbar bridge box 22 and the horizontal busbar bridge box 21. Compared with the four-part shell structure in the prior art, it has good integrity and simple structure.

[0060] The vertical busbar bridge box 22 is provided with a first support assembly for supporting the vertical bridge body, and the horizontal busbar bridge box 21 is provided with a second support assembly for supporting the horizontal bridge body. Figure 2 The first support assembly includes a mounting beam 24 and a busbar support member 13 provided on the support frame of the vertical busbar bridge box 22. One end of the busbar support member 13 abuts against each phase corner row, and the other end abuts against the mounting beam 24 to effectively support each phase corner row.

[0061] The second support assembly includes a mounting beam 24 and six busbar supports 13 arranged on the support frame of the horizontal busbar bridge box 21. The three upper busbar supports 13 are located on the same horizontal plane, and the three lower busbar supports 13 are located on the same horizontal plane. Two mounting beams 24 are respectively provided at the upper and lower parts of the horizontal busbar bridge box 21, wherein the bottom ends of the two upper busbar supports 13 abut against the A-phase horizontal row 8 and the B-phase horizontal row 7, and the top ends abut against the mounting beam 24; the bottom end of another upper busbar support 13 is supported on the A-phase transfer row 9, and the top end abuts against the mounting beam 24. The top ends of the two lower busbar supports 13 abut against the bottom surfaces of the B-phase extension row 18 and the C-phase horizontal row 12, respectively, and the bottom ends abut against the mounting beam 24; the top end of another lower busbar support 13 is supported on the bottom surface of the C-phase transfer row 11, and the bottom end abuts against the mounting beam 24. The arrangement of the first support assembly and the second support assembly plays a good supporting role for the busbar bridge. For example, the busbar support member 13 is an insulator.

[0062] As a first replaceable implementation of Example 1, the horizontal bend of the C-phase corner row 6 can also be the same height as the B-phase horizontal row 7, and the height of the A-phase horizontal row 8 is lower than that of the B-phase horizontal row 7. At this time, the A-phase transfer row 9 is arranged closer to each phase lead-out row than the C-phase transfer row 11. As a variation, the height of the A-phase extension row 20 can be different from that of the C-phase horizontal row 12 and the B-phase extension row 18, and the end faces of the three can be uneven, as long as the phase change can be achieved in the horizontal bridge body through the arrangement of the A-phase transfer row 9 and the C-phase transfer row 11. The height of the C-phase horizontal row 12 and the B-phase extension row 18 can be different. In this case, busbar supports 13 of different heights need to be arranged below the two, or mounting beams 24 need to be arranged for support respectively.

[0063] As a first alternative embodiment of Embodiment 1, the horizontal row 8 of Phase A may be integrally provided with the horizontal bending portion of the corner row 4 of Phase A, and the horizontal row 7 of Phase B may be integrally provided with the horizontal bending portion of the corner row 5 of Phase B; or the vertical portions of the three-phase corner rows may be integrally provided with their corresponding lead-out rows.

[0064] Embodiment 2

[0065] This embodiment provides a busbar bridge system, which includes the busbar bridge structure in Embodiment 1 and switch cabinets provided at both ends of the bottom of the busbar bridge. The vertical busbar bridge box body 22 is provided on the top cover 23 of the switch cabinet. The depth of the busbar bridge structure in the busbar bridge system in the front-back direction of the switch cabinet is small, which can ensure the normal pressure relief of adjacent switch cabinet compartments.

[0066] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A busbar bridge structure, characterized in that, it includes a vertical bridge body, which includes an A-phase lead-out row (1), a B-phase lead-out row (2), a C-phase lead-out row (3) arranged in sequence from left to right, an A-phase corner row (4) connected to the A-phase lead-out row (1), a B-phase corner row (5) connected to the B-phase lead-out row (2), and a C-phase corner row (6) connected to the C-phase lead-out row (3); the A-phase lead-out row (1), B-phase lead-out row (2), and C-phase lead-out row (3) all extend vertically upward; the A-phase corner row (4), B-phase corner row (5), and C-phase corner row (6) all extend vertically upward and are horizontally bent at their respective tops towards the first direction; a horizontal bridge body, which includes an A-phase transfer row (9) and a C-phase transfer row (11); one end of the A-phase transfer row (9) is connected to the horizontal bending part of the A-phase corner row (4), and the other end extends towards the side where the C-phase lead-out row (3) is located; one end of the C-phase transfer row (11) is connected to the horizontal bending part of the C-phase corner row (6), and the other end extends towards the side where the A-phase lead-out row (1) is located; the A-phase transfer row (9) and the C-phase transfer row (11) are arranged at intervals up and down; the horizontal bridge body further includes an A-phase horizontal row (8) connected to the horizontal bending part of the A-phase corner row (4), and a B-phase horizontal row (7) connected to the horizontal bending part of the B-phase corner row (5); one end of the A-phase transfer row (9) is connected to the A-phase horizontal row (8); the horizontal bending part of the A-phase horizontal row (8) or the C-phase corner row (6) is at the same height as the B-phase horizontal row (7), and the middle part of the B-phase horizontal row (7) extends obliquely downward to form a B-phase inclined row (17); the A-phase horizontal row (8) is at the same height as the B-phase horizontal row (7), and the C-phase transfer row (11) is arranged closer to the C-phase lead-out row (3) relative to the A-phase transfer row (9); the horizontal bridge body further includes a C-phase horizontal row (12) connected to the C-phase transfer row (11), and the C-phase horizontal row (12) is parallel to the A-phase horizontal row (8); the bottom of the B-phase inclined row (17) extends towards the horizontal direction to form a B-phase extension row (18); the C-phase horizontal row (12) is at the same height as the B-phase extension row (18); the horizontal bridge body further includes an A-phase inclined row (10) connected to the A-phase transfer row (9), the A-phase inclined row (10) inclines downward and its bottom end extends towards the horizontal direction to form an A-phase extension row (20), and the A-phase extension row (20) is at the same height as the C-phase horizontal row (12); the top of the B-phase inclined row (17) is located on the right side of the C-phase transfer row (11), and the bottom of the B-phase inclined row (17) is located on the left side of the A-phase transfer row (9).

2. The busbar bridge structure according to claim 1, characterized in that, it further includes a vertical busbar bridge box body (22) and a horizontal busbar bridge box body (21); the vertical busbar bridge box body (22) covers the outside of the vertical bridge body, and the horizontal busbar bridge box body (21) covers the outside of the horizontal bridge body; A first support assembly for supporting the vertical bridge body is provided on the vertical busbar bridge box body (22), and a second support assembly for supporting the horizontal bridge body is provided on the horizontal busbar bridge box body (21).

3. The busbar bridge structure according to claim 2, wherein, a first bushing plate (15) through which the three-phase outgoing busbars pass is provided at the bottom of the vertical busbar bridge box body (22), and a through hole (224) adapted to communicate with the switchgear is provided at the side of the first bushing plate (15); and / or a second bushing plate (16) through which the horizontal bridge body passes is provided at the connection between the vertical busbar bridge box body (22) and the horizontal busbar bridge box body (21).

4. The busbar bridge structure according to claim 2 or 3, wherein, a pressure relief plate (223) is further provided at the top of the vertical busbar bridge box body (22).

5. The busbar bridge structure according to claim 2 or 3, wherein, heat dissipation holes (19) are provided on both the vertical busbar bridge box body (22) and the horizontal busbar bridge box body (21); the heat dissipation holes (19) are arranged downward.

6. A busbar bridge system, wherein, it includes the busbar bridge structure according to any one of claims 1-5 and switchgears provided at both ends of the bottom of the busbar bridge structure.

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