CN216698057U - Low-voltage lead structure of energy-saving rectifier transformer - Google Patents
Low-voltage lead structure of energy-saving rectifier transformer Download PDFInfo
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- CN216698057U CN216698057U CN202123384089.0U CN202123384089U CN216698057U CN 216698057 U CN216698057 U CN 216698057U CN 202123384089 U CN202123384089 U CN 202123384089U CN 216698057 U CN216698057 U CN 216698057U
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Abstract
The utility model provides a low-voltage lead structure of an energy-saving rectifier transformer, which comprises a coil output copper bar, an L-shaped copper bar, a transverse connection copper bar and a copper foil flexible connection; the coil output copper bar is vertically arranged between the low-voltage coil and the wall of the transformer tank, the plane of the copper bar is parallel to the wall of the transformer tank, a plurality of head-out copper wires of a plurality of windings on the low-voltage coil are welded on one side of the L-shaped copper bar, and the other side of the L-shaped copper bar is fixedly connected with the coil output copper bar. The upper end of the coil output copper bar is connected with the transverse connection copper bar, and the copper foil flexible connection is directly welded on the transverse connection copper bar and serves as a low-voltage main output leading-out end of the transformer. The energy-saving rectifier transformer aims at the low-voltage coil structure with multi-winding parallel output, and solves the problem that a low-voltage lead is unreasonable. The distance from the low-voltage side coil to the oil tank can be reduced, the using amount of transformer oil is greatly reduced, the problem that the outer wall of the oil tank generates heat locally is solved, the low-voltage lead structure is simplified, and the overall loss of the transformer is reduced.
Description
Technical Field
The utility model relates to the technical field of energy-saving transformers, in particular to a low-voltage lead structure of an energy-saving rectifier transformer.
Background
Most energy-saving rectifier transformers that adopt of present transmission transformer, its structure is mostly: the low-voltage coil adopts a double-cake type; for example: chinese patent publication No. CN 204407148U discloses a transformer with a double-pancake coil structure, in which the coils of the transformer have a plurality of lead output terminals, all of which need to be connected in parallel for output, and the lead structure has the following technical problems:
1) the low-voltage lead structure is that the copper bar is vertical to the wall of the tank, and the lead of the coil is directly welded on the copper bar. This structure has certain drawbacks: the copper bars are perpendicular to the tank wall, so that local heating at the corresponding tank wall of the copper bars is concentrated, and obvious heating traces can be generated at the tank wall of the transformer after the transformer is operated for a long time;
2) the total output leading-out end adopts the switching copper bar for switching and then is connected with the copper foil for flexible connection, so that the number of welding spots is large, and the lead loss is large.
Therefore, a new lead structure needs to be developed to solve the problem of local heating of the rectifier transformer tank.
Disclosure of Invention
In order to solve the technical problems in the background art, the utility model provides a low-voltage lead structure of an energy-saving rectifier transformer, which aims at solving the problem of unreasonable low-voltage leads of the energy-saving rectifier transformer (such as a transformer with a double-pancake coil structure) with a low-voltage coil structure with multi-winding parallel output.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a low-voltage lead structure of an energy-saving rectifier transformer is characterized in that a low-voltage coil of the transformer is a multi-winding parallel output coil structure.
The low-voltage lead structure comprises a coil output copper bar, an L-shaped copper bar, a transverse connecting copper bar and a copper foil flexible connection; the coil output copper bar is vertically arranged between the low-voltage coil and the wall of the transformer tank, the plane of the copper bar is parallel to the wall of the transformer tank, a plurality of head-out copper wires of a plurality of windings on the low-voltage coil are welded on one side of the L-shaped copper bar, and the other side of the L-shaped copper bar is fixedly connected with the coil output copper bar.
The upper end of the coil output copper bar is connected with the transverse connection copper bar, and the copper foil flexible connection is directly welded on the transverse connection copper bar and serves as a low-voltage total output leading-out end of the transformer.
Furthermore, the transformer has 3 low-voltage coils, 6 coil output copper bars are 6 output ends in total, and the 6 output ends of the low-voltage coils are connected into an angle type or star type connection mode through the transverse connection copper bars.
Compared with the prior art, the utility model has the beneficial effects that:
1) the coil output copper bars are arranged in parallel to the wall of the transformer box, the heat dissipation performance is good, and the L-shaped copper bars are used for solving the connection problem between the coil output copper bars arranged in parallel and a plurality of head-out copper wires; by adopting the scheme, the distance from the low-voltage side coil to the oil tank can be reduced, the purpose of greatly reducing the using amount of transformer oil (by about 20%) is achieved, and the problem of local heating of the outer wall of the oil tank is solved;
2) the copper foil flexible connection is directly welded on the transverse connection copper bar, so that the switching copper bar is reduced, the low-voltage lead structure is simplified, and the internal welding is reduced; the lead loss (about 15%) can be greatly reduced by reducing two welding points, so that the overall loss (about 1% -2%) of the transformer is reduced.
Drawings
FIG. 1 is a front view of a low-voltage lead structure of an energy-saving rectifier transformer according to the present invention;
FIG. 2 is a side view of the low voltage lead structure of the energy-saving rectifier transformer of the present invention;
FIG. 3 is a top view of the low voltage lead structure of the energy-saving rectifier transformer of the present invention;
FIG. 4 is a partial front view of the coil leads of the low voltage lead configuration of the present invention;
FIG. 5 is a partial top view of the coil leads of the low voltage lead configuration of the present invention;
FIG. 6 is a front view of a low-voltage lead structure of a prior art energy-saving rectifier transformer;
FIG. 7 is a side view of a prior art low voltage lead configuration for an energy efficient rectifier transformer;
fig. 8 is a top view of a low-voltage lead structure of a prior art energy-saving rectifier transformer.
In the figure: 1-coil output copper bar 2-L-shaped copper bar 3-outlet copper wire 4 of winding-switching copper bar 5-copper foil flexible connection 6-tank wall 7-transverse connection copper bar 8-low-voltage coil.
Detailed Description
The following detailed description of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1-5, the low-voltage lead structure of the utility model comprises a coil output copper bar (1), an L-shaped copper bar (2), a transverse connecting copper bar (7) and a copper foil flexible connection (5); coil output copper bar (1) vertical arrangement in between low-voltage coil (8) and transformer tank wall (6), the copper bar plane is on a parallel with transformer tank wall (6), a plurality of first copper wire (3) welding of going out of many windings on low-voltage coil (8) are on one side of L type copper bar (2), the another side and coil output copper bar (1) fixed connection of L type copper bar (2).
The upper end of the coil output copper bar (1) is connected with a transverse connection copper bar (7), and a copper foil flexible connection (5) is directly welded on the transverse connection copper bar (7) and serves as a low-voltage total output leading-out end of the transformer.
The transformer has 3 low-voltage coil (8), total 6 coil output copper bar (1) be 6 output, transverse connection copper bar (7) connect into the horn type or star type connected mode with 6 output of low-voltage coil (8). .
As shown in fig. 6-8, the structure of the transformer lead wire is a structure diagram of a coil structure in which a low-voltage coil is output in parallel by multiple windings in the prior art, the low-voltage lead wire structure is that a coil output copper bar (1) is perpendicular to a tank wall (6), and a leading copper wire (3) of the winding is directly welded on the coil output copper bar (1). This structure has certain drawbacks: the copper bars are perpendicular to the tank walls (6), so that local heating at the tank walls (6) corresponding to the copper bars is concentrated, and obvious heating traces are generated at the tank walls (6) when the transformer runs for a long time; in addition, the total output leading-out end is connected with the copper foil flexible connection (5) after being connected by the switching copper bar (4), so that the number of welding spots is large, and the lead loss is large.
According to the utility model, the coil output copper bars (1) are arranged in parallel to the wall (6) of the transformer box, so that the heat dissipation is good, and the L-shaped copper bars (2) are used for solving the problem of connection between the coil output copper bars (1) arranged in parallel and a plurality of head-out copper wires (3); through the scheme, the distance from the low-voltage coil (8) to the wall (6) of the oil tank can be reduced from 240mm to 150mm, the purpose of greatly reducing the using amount of transformer oil (by about 20%) is achieved, and meanwhile the problem of local heating of the outer wall of the oil tank is solved.
According to the utility model, the copper foil flexible connection (5) is directly welded on the transverse connection copper bar (7), so that the switching copper bar (4) is reduced, the low-voltage lead structure is simplified, and the internal welding is reduced; the lead loss (about 15%) can be greatly reduced by reducing two welding points, so that the overall loss (about 1% -2%) of the transformer is reduced.
The above embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the above embodiments. The methods used in the above examples are conventional methods unless otherwise specified.
Claims (2)
1. A low-voltage lead structure of an energy-saving rectifier transformer is characterized in that a low-voltage coil of the transformer is a multi-winding parallel output coil structure;
the low-voltage lead structure is characterized by comprising a coil output copper bar, an L-shaped copper bar, a transverse connecting copper bar and a copper foil flexible connection;
the coil output copper bar is vertically arranged between the low-voltage coil and the wall of the transformer tank, the plane of the copper bar is parallel to the wall of the transformer tank, a plurality of head copper wires of a plurality of windings on the low-voltage coil are welded on one side of the L-shaped copper bar, and the other side of the L-shaped copper bar is fixedly connected with the coil output copper bar;
the upper end of the coil output copper bar is connected with the transverse connection copper bar, and the copper foil flexible connection is directly welded on the transverse connection copper bar and serves as a low-voltage total output leading-out end of the transformer.
2. The low-voltage lead structure of an energy-saving rectifier transformer as claimed in claim 1, wherein said transformer has 3 low-voltage coils, 6 coil output copper bars (6 output ends) in total, and the transverse connecting copper bars connect the 6 output ends of the low-voltage coils in an angular or star connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123384089.0U CN216698057U (en) | 2021-12-29 | 2021-12-29 | Low-voltage lead structure of energy-saving rectifier transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123384089.0U CN216698057U (en) | 2021-12-29 | 2021-12-29 | Low-voltage lead structure of energy-saving rectifier transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216698057U true CN216698057U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123384089.0U Active CN216698057U (en) | 2021-12-29 | 2021-12-29 | Low-voltage lead structure of energy-saving rectifier transformer |
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| Country | Link |
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| CN (1) | CN216698057U (en) |
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2021
- 2021-12-29 CN CN202123384089.0U patent/CN216698057U/en active Active
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