CN211295711U - Vertical arrangement structure of low-voltage bus bar of large-capacity split-phase main transformer - Google Patents

Abstract

The utility model provides a vertical arrangement structure of low-voltage bus bars of a large-capacity split-phase main transformer, which solves the problems of low space utilization rate and the like of a transformer station, it includes a plurality of horizontal align to grid's single-phase autotransformer, be equipped with respectively between the single-phase autotransformer and prevent hot wall, prevent hot wall one side for preventing hot wall pillar, prevent hot wall pillar from the top down evenly installed a plurality of bar type post insulators of preventing of hot wall one side, bar type post insulator sets up perpendicularly and keeps away from hot wall one side of preventing hot wall in preventing hot wall pillar, bar type post insulator end department passes through bus sleeve and establishes ties on being located same horizontal plane, bus sleeve wears the generating line that converges, single-phase autotransformer's low voltage side is erect perpendicularly and is had main low voltage sleeve pipe, single-phase autotransformer's low voltage side is passed through conducting assembly and is converged. The utility model has the advantages of space utilization is high, wiring structure is simple.

Description

Vertical arrangement structure of low-voltage bus bar of large-capacity split-phase main transformer

Technical Field

The utility model belongs to the technical field of high-tension electricity transmission equipment, concretely relates to perpendicular arrangement structure of large capacity phase splitting main transformer low pressure busbar.

Background

Along with the process of urbanization, more and more transformer substations are built in load centers such as urban areas, and extra-high voltage 1000kV and extra-high voltage 330 plus 500kV transformer substations are also built near urban areas or suburbs more and more to be closer to the load centers; for the conventional 220kV and below main transformers, most three-phase integrated transformers are adopted, and 330kV and 500kV main transformers are limited by manufacturing difficulty and transportation roads and vehicles, at present, split-phase transformers are basically adopted, namely ABC split-phase transformers of each phase, for the split-phase transformers, the high-medium voltage side is in star-shaped wiring, only one sleeve needs to be led out, the low-voltage side is in triangular wiring, 2 sleeves need to be led out, and then the sleeves are led out to a bus bar respectively. The conventional way busbar adopts horizontal strut type to arrange, draws forth from main transformer sleeve pipe and leads to busbar through post insulator, because the fire prevention interval of considering between the split phase owner becomes, need adopt when can not satisfying and prevent hot wall, to preventing hot wall and horizontal arrangement busbar and need the interval, other equipment can't be arranged to the intermediate position, the space between main transformer and the busbar can't be utilized, has the waste of certain degree to whole distribution device's space utilization. In addition, when the bus bar is connected with the lead, the wiring structure is complex, fault hidden dangers such as short circuit are easily generated, and the workload of overhauling, operating and maintaining is increased.

In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, chinese patent literature discloses an arrangement structure of a main transformer low-voltage side incoming line and a main incoming line [201320497002.7], which includes a main transformer low-voltage side bus bar, an incoming line main loop and a branch bus bar, wherein the main transformer low-voltage side bus bar and the branch bus bar are arranged in a "T" shape, one end of the incoming line main loop is connected to the main transformer low-voltage side bus bar, and the other end of the incoming line main loop is connected to the branch bus bar.

The problem that the bus bar structure is complex in arrangement is solved to a certain extent by the scheme, but the scheme still has a plurality of defects, such as low space utilization rate between the fire walls and the like.

Disclosure of Invention

The utility model aims at the above-mentioned problem, a reasonable in design is provided, the high capacity phase splitting main transformer low pressure busbar vertical arrangement structure that space utilization is high.

In order to achieve the above purpose, the utility model adopts the following technical proposal: this perpendicular arrangement structure of large capacity phase splitting main transformer low pressure busbar, single-phase auto transformer including a plurality of horizontal align to grid, be equipped with respectively between the single-phase auto transformer and prevent hot wall, prevent hot wall one side for preventing hot wall pillar, prevent hot wall pillar from the top down evenly installed a plurality of bar type post insulators of hot wall one side, bar type post insulator sets up perpendicularly and keeps away from hot wall one side of preventing hot wall in preventing hot wall pillar, bar type post insulator end department passes through the bus sleeve polyphone on being located same horizontal plane, bus sleeve wears the busbar in, single-phase auto transformer's low pressure side has erect the main low voltage sleeve pipe of auto transformer perpendicularly, single-phase transformer's low pressure side is passed through conductive component and is connected with the busbar that converges, the. The fireproof wall is provided with the rod-shaped supporting insulator, and the rod-shaped supporting insulator is connected with a plurality of bus sleeves arranged in parallel, so that the space between the fireproof walls is fully utilized.

In the vertical arrangement structure of the low-voltage bus bar of the high-capacity split-phase main transformer, the bus bar sleeves are arranged in parallel and are positioned on the same side of the firewall, and the distance between the bus bar sleeves is 1m-2 m. The bus sleeves are arranged in parallel, and a distance of 1-2 m is reserved, so that wiring is facilitated and a circuit is prevented from being in a winding short circuit.

In the vertical arrangement structure of the low-voltage bus bar of the high-capacity split-phase main transformer, the fire-proof wall is vertically arranged between the single-phase autotransformers, and the distances from the fire-proof wall to the single-phase autotransformers at two sides are equal. The distances of the single-phase autotransformers are equal, so that the fireproof distance is ensured, and the distance of the fireproof cavity is reduced.

In the above-mentioned high capacity phase splitting main transformer low pressure busbar vertical arrangement structure, the conductive component includes heat-resisting aluminum alloy wire, and heat-resisting aluminum alloy wire sets up between main transformer low pressure sleeve pipe and busbar. The heat-resistant aluminum alloy conductor has good conductivity and lighter weight, and reduces the supporting burden of the bus sleeve and the rod-shaped post insulator.

In foretell large capacity phase splitting main transformer low pressure busbar vertical arrangement structure, main transformer low pressure sleeve pipe includes the vertical pipe on the low pressure side of the single-phase autotransformer of vertical setting, and the vertical pipe upper end is connected with the horizontal pipe of end towards the bus sleeve pipe. The vertical tube is arranged perpendicular to the horizontal tube so as to guide the heat-resistant aluminum alloy wire from the low-voltage side of the single-phase autotransformer to be parallel to the rod-shaped post insulator.

In the vertical arrangement structure of the low-voltage bus bar of the high-capacity split-phase main transformer, the heat-resistant aluminum alloy wires penetrate through the vertical pipes and the horizontal pipes to be connected with the rod-shaped support insulators, and the heat-resistant aluminum alloy wires connected with the rod-shaped support insulators are connected with the bus bar in each bus sleeve in a shunting manner. The rod-type post insulators function as a shunt to guide the bus bar into other bus bar bushings.

In the vertical arrangement structure of the low-voltage bus bar of the high-capacity split-phase main transformer, the support component comprises a support rod vertical to the ground, the upper end of the support rod is provided with a support frame of which the end is connected with a heat-resistant aluminum alloy wire in the conductive component, and the outer side of the support frame is sleeved with an insulating sleeve. The support assembly is supported on the ground. The top end supports the heat-resistant aluminum alloy wire, and the heat-resistant aluminum alloy wire is horizontally arranged.

In foretell high capacity phase splitting main transformer low pressure busbar vertical arrangement structure, bar type post insulator includes the vertical mount table of installing on preventing hot wall pillar, has evenly arranged a plurality of relative mount table vertically stay tubes on the mount table, and the stay tube outside cover has insulating cover, the horizontal installation pipe that sets up of stay tube end fixedly connected with. The rod-shaped post insulator keeps a certain distance between the bus sleeve and the firewall.

In the high-capacity split-phase main transformer low-voltage bus bar vertical arrangement structure, the low-voltage side of the single-phase autotransformer adopts a triangular connection, and the medium-voltage side and the high-voltage side of the single-phase autotransformer adopt star connection. The low-voltage side and the medium-voltage side and the high-voltage side adopt different connection modes so as to adapt to different voltages.

In the above vertical arrangement structure of the low-voltage bus bar of the large-capacity split-phase main transformer, the low-voltage side of the single-phase autotransformer is connected to a 35kV power distribution device, the medium-voltage side of the single-phase autotransformer is connected to a 220kV power distribution device, and the high-voltage side of the single-phase autotransformer is connected to a 500kV power distribution device. The single-phase autotransformer is respectively connected with 35kV, 220kV and 500kV distribution devices, wherein the 35kV distribution device is connected with a bus sleeve.

Compared with the prior art, the utility model has the advantages of: the rod-shaped post insulator is connected with a plurality of bus sleeves which are arranged in parallel, so that the space between the firewalls is fully utilized; the plurality of bus sleeves are arranged in parallel from top to bottom, so that wiring is convenient; the heat-resistant aluminum alloy conductor has good conductivity and lighter weight, and reduces the supporting burden of the bus sleeve and the rod-shaped post insulator.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is an enlarged view of the structure at a of the present invention;

FIG. 3 is a structural layout diagram of the present invention;

in the figure, a single-phase autotransformer 1, a low-voltage side 11, a medium-voltage side 12, a high-voltage side 13, a firewall 2, a firewall support 3, a rod-shaped support insulator 4, a mounting table 41, a support pipe 42, a mounting pipe 43, a bus sleeve 5, a bus bar 6, a main transformer low-voltage sleeve 7, a vertical pipe 71, a horizontal pipe 72, a conductive component 8, a heat-resistant aluminum alloy wire 81, a support component 9, a support rod 91, a support frame 92 and an insulating sleeve 93.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-3, this perpendicular arrangement structure of high capacity phase-splitting main transformer low pressure busbar, including a plurality of horizontal align to grid's single-phase auto transformer 1, be equipped with respectively between the single-phase auto transformer 1 and prevent hot wall 2, prevent hot wall 2 one side for preventing hot wall pillar 3, prevent hot wall pillar 3 of hot wall 2 one side from the top down and evenly install a plurality of bar type post insulators 4, bar type post insulator 4 sets up perpendicularly and is keeping away from one side of preventing hot wall 2 at hot wall pillar 3, the 4 end departments of bar type post insulator pass through bus sleeve 5 concatenations on being located the same horizontal plane, bus sleeve 5 is worn to converge busbar 6, the low pressure side 11 of single-phase auto transformer 1 has stood perpendicularly the main transformer low pressure sleeve 7, the low pressure side 11 of single-phase auto transformer 1 passes through conducting component 8 and converges busbar 6 and is connected, conducting. During installation, the rod-shaped post insulator 4 is vertically installed on the firewall post 3, and the horizontally arranged bus sleeve 5 is installed at the end of the rod-shaped post insulator 4, so that the low-voltage side 11 of the single-phase autotransformer 1 is connected with the bus bar 6 in the bus sleeve 5, and the side surface of the firewall 2 is effectively utilized.

Specifically, the bus bar sleeves 5 are arranged in parallel and are positioned on the same side of the firewall 2, and the distance between the bus bar sleeves 5 is 1m-2 m. The bus bar sleeves 5 are positioned on the same vertical surface and are parallel to each other, and a distance of 1.5m is kept between the bus bar sleeves 5, so that the wiring inside the bus bar sleeves 5 is facilitated.

Besides, the firewall 2 is vertically arranged between the single-phase autotransformers 1, and the distance from the firewall 2 to the single-phase autotransformers 1 on two sides is equal. The firewall 2 and the single-phase autotransformer 1 are arranged at equal intervals, and the horizontal space is fully utilized.

Further, the conductive member 8 includes a heat-resistant aluminum alloy wire 81, and the heat-resistant aluminum alloy wire 81 is disposed between the main-transformer low-voltage bushing 7 and the bus bar 6. The heat-resistant aluminum alloy wire 81 is a conductor and has a light weight and is excellent in electrical conductivity and heat resistance.

Further, the main transformer low-voltage bushing 7 comprises a vertical tube 71 vertically arranged on the low-voltage side 11 of the single-phase autotransformer 1, and a horizontal tube 72 with the end facing the bus bushing 5 is connected to the upper end of the vertical tube 71. The vertical pipe 71 and the horizontal pipe 72 adjust the guiding direction of the heat-resistant aluminum alloy wire 81.

Meanwhile, the heat-resistant aluminum alloy wires 81 are connected to the rod-shaped post insulators 4 through the vertical tubes 71 and the horizontal tubes 72, and the heat-resistant aluminum alloy wires 81 connected to the rod-shaped post insulators 4 are branched and connected to the bus bars 6 in the respective bus bar casings 5. The rod-shaped post insulator 4 in the middle is connected with the heat-resistant aluminum alloy wire 81 while shunting the heat-resistant aluminum alloy wire 81 to the bus bar 6 in each bus bar bushing 5.

In depth, the supporting component 9 comprises a supporting rod 91 vertical to the ground, a supporting frame 92 with an end connected with the heat-resistant aluminum alloy conducting wire 81 in the conducting component 8 is arranged at the upper end of the supporting rod 91, and an insulating sleeve 93 is sleeved outside the supporting frame 92. The support rod 91 is vertically arranged and has the same height as the rod-shaped post insulator 4 in the middle.

Obviously, the rod-shaped post insulator 4 comprises a mounting platform 41 vertically mounted on the firewall post 3, a plurality of supporting tubes 42 vertically arranged relative to the mounting platform 41 are uniformly arranged on the mounting platform 41, an insulating sleeve 93 is sleeved outside the supporting tubes 42, and the end of each supporting tube 42 is fixedly connected with a transversely arranged mounting tube 43. The support tubes 42 and the mounting tubes 43 of the mounting table 41 hold the bus bar sleeves 5 at a relative distance from the firewall support posts 3.

It is clear that the low voltage side 11 of the single phase autotransformer 1 is delta-connected and the medium voltage side 12 and the high voltage side 13 of the single phase autotransformer 1 are star-connected. The delta connection and star connection can be adapted to different voltage requirements.

Visibly, the low voltage side 11 of the single phase autotransformer 1 is connected to a 35kV distribution device, the medium voltage side 12 of the single phase autotransformer 1 is connected to a 220kV distribution device, and the high voltage side 13 of the single phase autotransformer 1 is connected to a 500kV distribution device.

In summary, the principle of the present embodiment is: a plurality of bus sleeves 5 are arranged in parallel through rod-shaped post insulators 4 of a firewall 2, wherein the bus sleeves 5 are located on the same vertical surface, the distances between the bus sleeves 5 are equal, a conducting assembly 8 guides current of a low-voltage side 11 of a single-phase autotransformer 1 to a bus bar 6 in the bus sleeves 5, and a supporting assembly 9 is arranged in the middle of a heat-resistant aluminum alloy wire 81 of the conducting assembly 8 and located between the single-phase autotransformer 1 and the bus sleeves 5.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of single-phase autotransformer 1, low voltage side 11, medium voltage side 12, high voltage side 13, firewall 2, firewall support 3, rod-type support insulator 4, mounting platform 41, support tube 42, mounting tube 43, bus bar bushing 5, bus bar 6, main transformer low voltage bushing 7, vertical tube 71, horizontal tube 72, conductive assembly 8, heat-resistant aluminum alloy wire 81, support assembly 9, support rod 91, support bracket 92, insulating sleeve 93, etc., are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. The utility model provides a high capacity phase splitting main transformer low pressure busbar vertical layout structure, includes single-phase auto transformer (1) of a plurality of horizontal align to grid, single-phase auto transformer (1) between be equipped with respectively prevents hot wall (2), its characterized in that, prevent hot wall (2) one side for preventing hot wall pillar (3), prevent hot wall pillar (3) of hot wall (2) one side from the top down evenly install a plurality of bar type post insulators (4), bar type post insulator (4) set up perpendicularly in preventing hot wall pillar (3) keep away from one side of hot wall (2), lie in bar type post insulator (4) end department on same horizontal plane and pass through bus sleeve (5) and concatenate, bus sleeve (5) in worn bus bar (6), low pressure side (11) of single-phase auto transformer (1) erect main low voltage bushing (7), the low-voltage side (11) of the single-phase autotransformer (1) is connected with the bus bar (6) through a conductive component (8), and a vertically arranged supporting component (9) is arranged below the conductive component (8).

2. The vertical arrangement structure of the low-voltage bus bars of the large-capacity split-phase main transformer according to claim 1, wherein the bus bar sleeves (5) are arranged in parallel and are positioned on the same side of the firewall (2), and the distance between the bus bar sleeves (5) is 1m-2 m.

3. The high-capacity split-phase main transformer low-voltage bus bar vertical arrangement structure as claimed in claim 1 or 2, wherein the firewall (2) is vertically arranged between the single-phase autotransformers (1) and the distance from the firewall (2) to the single-phase autotransformers (1) on two sides is equal.

4. The vertical arrangement structure of the low-voltage bus bar of the large-capacity split-phase main transformer according to claim 3, wherein the conductive assembly (8) comprises a heat-resistant aluminum alloy wire (81), and the heat-resistant aluminum alloy wire (81) is arranged between the main-transformer low-voltage bushing (7) and the bus bar (6).

5. The high-capacity split-phase main transformer low-voltage bus bar vertical arrangement structure according to claim 4, wherein the main transformer low-voltage bushing (7) comprises a vertical tube (71) vertically arranged on the low-voltage side (11) of the single-phase autotransformer (1), and a horizontal tube (72) with the end facing the bus bar bushing (5) is connected to the upper end of the vertical tube (71).

6. The vertical arrangement structure of the low-voltage bus bars of the large-capacity split-phase main transformer according to claim 5, characterized in that the heat-resistant aluminum alloy wires (81) pass through the vertical pipes (71) and the horizontal pipes (72) to be connected with the rod-shaped post insulators (4), and the heat-resistant aluminum alloy wires (81) connected with the rod-shaped post insulators (4) are connected with the bus bars (6) in the bus bar sleeves (5) in a split-flow manner.

7. The vertical arrangement structure of the low-voltage bus bar of the large-capacity split-phase main transformer according to claim 6, wherein the supporting component (9) comprises a supporting rod (91) vertical to the ground, the upper end of the supporting rod (91) is provided with a supporting frame (92) the end of which is connected with the heat-resistant aluminum alloy conducting wire (81) in the conducting component (8), and the outer side of the supporting frame (92) is sleeved with an insulating sleeve (93).

8. The vertical arrangement structure of the low-voltage bus bar of the large-capacity isolated phase main transformer according to claim 1, wherein the rod-shaped post insulators (4) comprise mounting tables (41) vertically mounted on the firewall posts (3), a plurality of supporting tubes (42) vertical to the mounting tables (41) are uniformly arranged on the mounting tables (41), insulating sleeves (93) are sleeved outside the supporting tubes (42), and the ends of the supporting tubes (42) are fixedly connected with transversely arranged mounting tubes (43).

9. The vertical arrangement structure of the low-voltage bus bars of the large-capacity split-phase main transformer according to claim 1, characterized in that the low-voltage side (11) of the single-phase autotransformer (1) adopts a triangular connection, and the medium-voltage side (12) and the high-voltage side (13) of the single-phase autotransformer (1) adopt a star connection.

10. The high capacity isolated phase main transformer low voltage bus bar vertical arrangement according to claim 9, wherein the low voltage side (11) of said single phase autotransformer (1) is connected to a 35kV distribution device, the medium voltage side (12) of said single phase autotransformer (1) is connected to a 220kV distribution device, and the high voltage side (13) of said single phase autotransformer (1) is connected to a 500kV distribution device.

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