阅读说明：本技术 一种大电流电炉变压器的侧出线结构 (Side wire outlet structure of large-current electric furnace transformer ) 是由 丁宇 杨丹丹 王飞 钱丽丰 于 2020-07-09 设计创作，主要内容包括：本发明公开了一种大电流电炉变压器的侧出线结构,箱体及设置于箱体外侧的出线盒,出线盒的前侧设有出线板,出线板上设有若干出线孔,第三连接件上的若干第三引出线直接设置于上部的出线孔中,第一连接件上的若干第一引出线和第二连接件上的若干第二引出线分别沿下部的出线孔中引出,以使相邻第一引出线之间无连接,相邻第二引出线之间无连接,相邻第三引出线之间无连接。本申请在出线盒的前侧设置出线板,使得相邻第一引出线之间无连接,相邻第二引出线之间无连接,相邻第三引出线之间无连接,这种出线方式可以减少第一引出线、第二引出线和第三引出线占用的空间,从而减小了变压器的尺寸。(The invention discloses a side wire outlet structure of a large-current electric furnace transformer, which comprises a box body and a wire outlet box arranged on the outer side of the box body, wherein a wire outlet plate is arranged on the front side of the wire outlet box, a plurality of wire outlet holes are formed in the wire outlet plate, a plurality of third wire outlet wires on a third connecting piece are directly arranged in the wire outlet holes in the upper part, a plurality of first wire outlet wires on the first connecting piece and a plurality of second wire outlet wires on the second connecting piece are respectively led out from the wire outlet holes in the lower part, so that adjacent first wire outlet wires are not connected, adjacent second wire outlet wires are not connected, and adjacent third wire. This application sets up the outlet plate at the front side of outlet box for do not have the connection between the adjacent first lead-out wire, do not have the connection between the adjacent second lead-out wire, do not have the connection between the adjacent third lead-out wire, this kind of mode of being qualified for the next round of competitions can reduce the space that first lead-out wire, second lead-out wire and third lead-out wire occupy, thereby has reduced the size of transformer.)

1. The utility model provides a side outlet structure of heavy current electric furnace transformer which characterized in that includes: the wire outgoing box comprises a box body and a wire outgoing box (13) arranged outside the box body, wherein a first coil (10), a second coil (11) and a third coil (12) are arranged in the box body, the front sides of the first coil (10) and the second coil (11) are connected through a first connecting piece (7), the front sides of the second coil (11) and the third coil (12) are connected through a second connecting piece, the front sides of the first coil (10) and the third coil (12) are connected through a third connecting piece (9), a wire outgoing plate (1) is arranged on the front side of the wire outgoing box (13), a plurality of wire outgoing holes which are distributed in a shape like a Chinese character 'pin' are arranged on the wire outgoing plate (1), a plurality of third outgoing wires on the third connecting piece (9) are directly arranged in the wire outgoing holes on the upper portion, a plurality of first outgoing wires on the first connecting piece (7) and a plurality of second outgoing wires on the second connecting piece are respectively led out from the wire outgoing holes on the lower, therefore, no connection exists between the adjacent first outgoing lines, no connection exists between the adjacent second outgoing lines, and no connection exists between the adjacent third outgoing lines.

2. The lateral wire outlet structure of the large-current electric furnace transformer as recited in claim 1, wherein all the wire outlet holes comprise third wire outlet holes with the same number as the third wire outlet lines, which are arranged on the upper portion of the wire outlet plate (1), first wire outlet holes (2) with the same number as the first wire outlet lines, and second wire outlet holes with the same number as the second wire outlet lines, which are arranged on the lower portion of the wire outlet plate (1), all the first wire outlet holes (2), all the second wire outlet holes and all the third wire outlet holes are arranged in a delta shape, and all the first wire outlet holes (2) and all the second wire outlet holes are square wire outlet holes.

3. The lateral outlet structure of a large-current electric furnace transformer according to claim 2, wherein all the first outlet holes (2) are arranged in the vertical direction and distributed in parallel, and all the second outlet holes are arranged in the vertical direction and distributed in parallel.

4. A side outlet structure of a large current electric furnace transformer according to any one of claims 1 to 3, wherein said first connecting member (7) is a first copper plate, said second connecting member is a second copper plate, and said third connecting member (9) is a third copper plate, all of said first copper plates are arranged in a vertical direction and arranged in parallel, all of said second copper plates are arranged in a vertical direction and arranged in parallel, and all of said third copper plates are arranged in a vertical direction and arranged in parallel.

5. A side outlet structure of a large current electric furnace transformer according to claim 4, wherein the first outlet comprises first outlet copper plates (6) and first terminals (3) in the same number as the first connectors (7), the second outlet comprises second outlet copper plates and second terminals (5) in the same number as the second connectors, the third outlet comprises third outlet copper plates (8) and third terminals (4) in the same number as the third connectors (9), each first copper plate is provided with one first outlet copper plate (6), each second outlet copper plate is provided with one second outlet copper plate, each third copper plate is provided with one third outlet copper plate (8), each first outlet copper plate (6) is connected with one first terminal (3), each second lead-out copper plate is connected with one second wiring terminal (5), and each third lead-out copper plate (8) is connected with one third wiring terminal (4).

6. A side outlet structure of a large current electric furnace transformer according to claim 5, characterized in that the third terminal (4) is mounted to the outlet hole of the upper part through a lug and a bolt.

7. A side outlet structure of a large current electric furnace transformer according to claim 6, characterized in that the outlet plate (1) is an epoxy glass cloth plate or a hard aluminum alloy plate.

Technical Field

The invention relates to the technical field of design and manufacture of transformers, in particular to a side wire outlet structure of a high-current electric furnace transformer.

Background

The transformer for large-capacity electric furnace has inner corner sealing and side outgoing lines, and three phases of a, b and c are distributed in the shape of Chinese character 'pin'. With the continuous increase of the capacity of the transformer, the low-voltage current is increased. The copper bar used by the low-voltage lead wire is larger and larger, the general structure of the angle-sealing copper bar is that 3-4 or a plurality of branches are connected in parallel, and the angle-sealing lead wire is a low-voltage lead wire with three parallel-connected branches. The space occupied by the lead wires in the fuel tank becomes large, the geometric dimension of the fuel tank cannot be arbitrarily enlarged in consideration of manufacturing, transportation, installation and the like, and therefore eddy current loss and hot spot temperature on the tank wall and structural members may not be allowed.

In summary, how to reduce the space occupied by the leads to reduce the size of the transformer is an urgent problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, the present invention provides a side outlet structure of a large current electric furnace transformer, which can reduce the internal space of the transformer, thereby reducing the overall size of the transformer.

In order to achieve the above purpose, the invention provides the following technical scheme:

a side outlet structure of a high current furnace transformer, comprising: the box body and the wire outlet box arranged outside the box body, a first coil, a second coil and a third coil are arranged in the box body, the front sides of the first coil and the second coil are connected through a first connecting piece, the front sides of the second coil and the third coil are connected through a second connecting piece, the front sides of the first coil and the third coil are connected through a third connecting piece, a wire outlet plate is arranged on the front side of the wire outlet box, a plurality of wire outlet holes which are distributed in a shape like a Chinese character 'pin' are arranged on the wire outlet plate, a plurality of third lead wires on the third connecting piece are directly arranged in the wire outlet holes on the upper portion, a plurality of first lead wires on the first connecting piece and a plurality of second lead wires on the second connecting piece are respectively led out from the wire outlet holes on the lower portion, so that no connection exists between adjacent first lead wires, and no connection exists between adjacent second lead wires, and no connection exists between the adjacent third outgoing lines.

Preferably, all the wire holes include a third wire hole arranged on the upper portion of the wire outlet plate and having the same number as the third outgoing wires, a first wire hole arranged on the lower portion of the wire outlet plate and having the same number as the first outgoing wires, and a second wire hole having the same number as the second outgoing wires, all the first wire holes, all the second wire holes, and all the third wire holes are arranged in a delta shape, and all the first wire holes and all the second wire holes are square wire holes.

Preferably, all the first outlet holes are arranged in the vertical direction and distributed in parallel, and all the second outlet holes are arranged in the vertical direction and distributed in parallel.

Preferably, the first connecting piece is a first copper plate, the second connecting piece is a second copper plate, the third connecting piece is a third copper plate, all the first copper plates are arranged and arranged in parallel along the vertical direction, all the second copper plates are arranged and arranged in parallel along the vertical direction, and all the third copper plates are arranged and arranged in parallel along the vertical direction.

Preferably, the first outgoing line comprises first outgoing copper plates and first terminals, the number of the first outgoing copper plates is consistent with that of the first connecting pieces, the second outgoing line comprises second outgoing copper plates and second binding posts, the number of the second outgoing copper plates is consistent with that of the second connecting pieces, the third lead-out wire include with copper and third terminal are drawn forth to the third that third connecting piece quantity is unanimous, every be equipped with one respectively on the first copper of drawing forth, every be equipped with one respectively on the second copper the copper is drawn forth to the second, every be equipped with one respectively on the third copper the copper is drawn forth to the third, every connect one respectively on the first copper of drawing forth first terminal, every connect one respectively on the copper is drawn forth to the second terminal, every connect one respectively on the copper is drawn forth to the third terminal.

Preferably, the third terminal post is mounted to the outlet hole of the upper portion by a lug and a bolt.

Preferably, the outlet plate is an epoxy glass cloth plate or a hard aluminum alloy plate.

This application sets up the outlet plate at the front side of outlet box for do not have the connection between the adjacent first lead-out wire, do not have the connection between the adjacent second lead-out wire, do not have the connection between the adjacent third lead-out wire, this kind of mode of being qualified for the next round of competitions can reduce the space that first lead-out wire, second lead-out wire and third lead-out wire occupy, thereby has reduced the size of transformer. The first coil and the third coil c are connected with the x to form the whole copper bar with the sealed corners, the current flowing through the whole copper bar is not concentrated, and the additional loss on the adjacent structural parts is reduced; the magnetic flux leakage of the first coil, the second coil, the third coil, the first connecting piece, the second connecting piece and the third connecting piece can be shielded.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a front view of a side outlet structure of a large current furnace transformer according to the present invention;

fig. 2 is a side view of the mounting of a second connection piece and a second copper lead-out plate provided by the present invention;

fig. 3 is a side view of the mounting of a third connection piece and a third copper lead-out plate provided by the present invention;

FIG. 4 is a side view of the third connector assembly provided by the present invention;

fig. 5 is a top view of the side outlet structure of the large current furnace transformer according to the present invention.

In FIGS. 1-5:

the device comprises a 1-wire outlet plate, a 2-first wire outlet hole, a 3-first binding post, a 4-third binding post, a 5-second binding post, a 6-first leading-out copper plate, a 7-first connecting piece, a 8-third leading-out copper plate, a 9-third connecting piece, a 10-first coil, a 11-second coil, a 12-third coil and a 13-wire outlet box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the invention is to provide a side outlet structure of a large-current electric furnace transformer, and the side outlet structure of the large-current electric furnace transformer can reduce the internal space of the transformer, thereby reducing the whole size of the transformer.

Referring to fig. 1 to 5, fig. 1 is a front view of a side outgoing line structure of a large-current electric furnace transformer according to the present invention; fig. 2 is a side view of the mounting of a first connector and a first copper extraction plate provided by the present invention; fig. 3 is a side view of the mounting of a third connection piece and a third copper lead-out plate provided by the present invention; FIG. 4 is a side view of the third connector assembly provided by the present invention; fig. 5 is a top view of the side outlet structure of the large current furnace transformer according to the present invention.

A side outlet structure of a high current furnace transformer, comprising: the wire box comprises a box body and a wire outlet box 13 arranged outside the box body, wherein a first coil 10, a second coil 11 and a third coil 12 are arranged in the box body, the front sides of the first coil 10 and the second coil 11 are connected through a first connecting piece 7, the front sides of the second coil 11 and the third coil 12 are connected through a second connecting piece, the front sides of the first coil 10 and the third coil 12 are connected through a third connecting piece 9, a wire outlet plate 1 is arranged on the front side of the wire outlet box 13, a plurality of wire outlet holes which are distributed in a triangle shape are arranged on the wire outlet plate 1, a plurality of third lead wires on the third connecting piece 9 are directly arranged in the wire outlet holes on the upper portion, a plurality of first outgoing lines on the first connecting piece 7 and a plurality of second outgoing lines on the second connecting piece are respectively led out along the wire outlet holes at the lower part, therefore, no connection exists between the adjacent first outgoing lines, no connection exists between the adjacent second outgoing lines, and no connection exists between the adjacent third outgoing lines.

It should be noted that, in order to facilitate the connection of low-voltage leads and ensure the balance of three-phase resistances, a box-shaped structure protruding out of a side plane of a box body is arranged on the side surface of the box body of a general high-current circuit transformer, and the low-voltage three phases of the transformer are led out from the box body, which is a side outlet mode, while the outlet mode arranged in the application is just a side outlet mode, and an outlet box 13 is a box protruding out of the side surface of the box body, and the low-voltage three phases are led out from the.

Generally, three phases in a transformer are three independent coils, and phase currents flow in the operation process. The three coils are connected by lead wires in different modes, and are generally divided into Y connection or D connection (namely angle connection) according to design requirements. After connection, three connection terminals are formed, through which a line current flows. And triangular wiring is completed inside the box body, and the connection is an inner sealing angle. The angle sealing mode that this application adopted is just interior angle sealing. That is, the first coil 10 and the second coil 11 are connected by the first connector 7, the second coil 11 and the third coil 12 are connected by the second connector, the first coil 10 and the third coil 12 are connected by the third connector 9, the first lead wire is connected to the first connector 7 and led out, the second lead wire is connected to the second connector and led out, and the third lead wire is connected to the third connector 9 and led out.

In the prior art, the outgoing line at the lower portion extends upward and is fixed to the outgoing line adjacent to the upper portion by the mounting member, and the outgoing line at the upper portion extends downward and is fixed to the outgoing line adjacent to the lower portion by the mounting member, resulting in an increase in space inside the cabinet. This application sets up outlet plate 1 at outlet box 13's front side for do not have the connection between the adjacent first lead-out wire, do not have the connection between the adjacent second lead-out wire, do not have the connection between the adjacent third lead-out wire, this kind of mode of being qualified for the next round of competitions can reduce the space that first lead-out wire, second lead-out wire and third lead-out wire occupy, thereby has reduced the size of transformer. The first coil 10 and the third coil 12c are connected with the x to form the whole copper bar with the sealed corners, the current flowing through the whole copper bar is not concentrated, and the additional loss on the adjacent structural parts is reduced; and the magnetic flux leakage of the first coil 10, the second coil 11, the third coil 12, the first connecting piece 7, the second connecting piece and the third connecting piece 9 can be shielded.

On the basis of the above embodiment, as a further preferable option, all the outlet holes include third outlet holes that are arranged on the upper portion of the outlet plate 1 and have the same number as the third outlet wires, first outlet holes 2 that are arranged on the lower portion of the outlet plate 1 and have the same number as the first outlet wires, and second outlet holes that have the same number as the second outlet wires, all the first outlet holes 2, all the second outlet holes, and all the third outlet holes are arranged in a delta shape, and all the first outlet holes 2 and all the second outlet holes are square outlet holes.

It should be noted that all the third wire outlet holes are arranged side by side, all the third wire outlet holes may be circular wire outlet holes, all the third wire outlet holes may be regularly arranged on the wire outlet plate 1, or may be arranged on the wire outlet plate 1 according to an actual application condition, and all the third wire outlet holes may be set according to the actual application condition. All the first wire outlet holes 2 are arranged in the first area, all the second wire outlet holes are arranged in the second area, all the third wire outlet holes are arranged in the third area, and the first area, the second area and the third area are arranged on the wire outlet plate 1 in a delta shape, so that all the first wire outlet holes 2, all the second wire outlet holes and all the third wire outlet holes are integrally arranged in a delta shape. The first outgoing line hole 2 and the second outgoing line hole are arranged to be square outgoing lines, so that the first outgoing line and the second outgoing line can be led out conveniently.

On the basis of the above embodiment, as a further preference, all the first outlet holes 2 are arranged in the vertical direction and distributed in parallel, and all the second outlet holes are arranged in the vertical direction and distributed in parallel.

It should be noted that all the first outlet holes 2 are arranged in the vertical direction and distributed in parallel and can be in one-to-one correspondence with all the first outlet wires arranged in the vertical direction and distributed in parallel, and all the second outlet holes are arranged in the vertical direction and distributed in parallel and can be in one-to-one correspondence with all the second outlet wires arranged in the vertical direction and distributed in parallel, which is more convenient for leading out the first outlet wires and the second outlet wires.

On the basis of the above embodiment, it is further preferable that the first connecting members 7 are first copper plates, the second connecting members are second copper plates, and the third connecting members 9 are third copper plates, all the first copper plates are arranged and arranged in parallel in the vertical direction, all the second copper plates are arranged and arranged in parallel in the vertical direction, and all the third copper plates are arranged and arranged in parallel in the vertical direction.

It should be noted that all first copper plates, all second copper plates, all third copper plates are all transversely arranged, all first copper plates are arranged and arranged in parallel along the vertical direction, all second copper plates are arranged and arranged in parallel along the vertical direction, all third copper plates are arranged and arranged in parallel along the vertical direction, installation is facilitated, arrangement of all first copper plates, all second copper plates and all third copper plates is more regular, and occupation of the space inside the box body is reduced.

On the basis of the above embodiment, as a further preferable option, the first outgoing line includes first outgoing copper plates 6 and first terminals 3, the number of which is the same as that of the first connection members 7, the second outgoing line includes second outgoing copper plates and second terminals 5, the number of which is the same as that of the second connection members, the third outgoing line includes third outgoing copper plates 8 and third terminals 4, the number of which is the same as that of the third connection members 9, each first copper plate is provided with one first outgoing copper plate 6, each second copper plate is provided with one second outgoing copper plate, each third copper plate is provided with one third outgoing copper plate 8, each first outgoing copper plate 6 is connected with one first terminal 3, each second outgoing copper plate is connected with one second terminal 5, and each third outgoing copper plate 8 is connected with one third terminal 4.

It should be noted that each first connecting piece 7 corresponds to one first lead-out copper plate 6, one end of each first lead-out copper plate 6 is connected to the first connecting piece 7, the other end of each first lead-out copper plate 6 is connected to the first terminal 3, the first terminal 3 is led out along the first wire outlet 2, one end of each second lead-out copper plate is connected to the second connecting piece, the other end of each second lead-out copper plate is connected to the second terminal 5, the second terminal 5 is led out along the second wire outlet, one end of each third copper plate 8 is connected to the third connecting piece 9, the other end of each third copper plate is connected to the third terminal 4, and the third. The copper plate has strong conductivity, the first lead-out copper plate 6 and the first connecting piece 7 are correspondingly arranged, the second lead-out copper plate and the second connecting piece are correspondingly arranged, and the third lead-out copper plate 8 and the third connecting piece 9 are correspondingly arranged, so that the stable output of each branch can be ensured.

In addition to the above embodiments, it is further preferable that the third terminal 4 is mounted to an upper outlet hole by a lug and a bolt. The installation mode that copper 8 was drawn forth to the third that this embodiment set up is simple, has practiced thrift the cost of labor, has reduced the overall cost of transformer.

In addition to the above embodiments, the outlet plate 1 is preferably an epoxy glass cloth plate or a hard aluminum alloy plate.

When the structure that above-mentioned embodiment set up is adopted, outlet plate 1 is outlet box 13's panel, need adopt epoxy glass cloth board or stereoplasm aluminum alloy material, and the material that adopts this embodiment to provide is favorable to low pressure three-phase resistance balance.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The side outgoing line structure of the large-current electric furnace transformer provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.