CN219202933U

CN219202933U - Balance reactor structure for rectifier transformer

Info

Publication number: CN219202933U
Application number: CN202320317390.XU
Authority: CN
Inventors: 石玮; 李岩; 管少阳; 周丹; 王介全
Original assignee: Xi'an Xibian Zhongte Electric Co ltd; China XD Electric Co Ltd; Xian XD Transformer Co Ltd
Current assignee: Chengdu Xidian Zhongte Electric Co ltd; China XD Electric Co Ltd; Xian XD Transformer Co Ltd
Priority date: 2023-02-24
Filing date: 2023-02-24
Publication date: 2023-06-16
Anticipated expiration: 2033-02-24

Abstract

The utility model discloses a balance reactor structure for a rectifier transformer, which belongs to the field of transformer equipment and adopts a single-phase three-column iron core, a primary coil and a secondary coil. The primary coil and the secondary coil replace the original through copper bar with only one turn, and the primary coil and the secondary coil can be wound into a plurality of turns, so that the turn voltage can be selected according to actual needs, the sectional area and the diameter of the iron core can be further adjusted, the whole volume of the balance reactor is effectively controlled, the structure of the balance reactor is more compact, the whole arrangement of the rectifier transformer is more reasonable, and the balance reactor is applicable to the rectifier transformer with higher direct-current rated output voltage; the adoption of the structure can greatly reduce the consumption of the silicon steel sheet, ensure the good performance of the silicon steel sheet and greatly reduce the production cost; the structure is simple in principle, convenient to produce and manufacture, convenient to implement and good in popularization and application value.

Description

Balance reactor structure for rectifier transformer

Technical Field

The utility model belongs to the field of transformer equipment, and particularly relates to a balance reactor structure for a rectifier transformer.

Background

The reactor has wide application in a circuit, and has a certain inductive property because of the electromagnetic induction effect in the circuit, thereby playing a role in preventing current change. The balance reactor adopts a whole E-shaped structure of amorphous alloy as a magnetic core, and the adverse effect of overlarge high-frequency loss of the reactor with a common iron core structure is eliminated. The balancing reactor is suitable for the environment occasions of the adjustable direct current power supply which often needs low voltage and large current in industrial application such as electrolytic plating and the like.

In the existing rectifier transformer, the balance reactor structure is a structure of combining a square iron core and a penetrating copper bar; when the structure encounters a high direct current rated output voltage (such as 750V), the sectional area of the selected 'mouth' -shaped iron core is very large, the occupied volume of the balance reactor is far larger than that of the rectifier transformer body, the whole structure of the transformer is extremely uncoordinated, great difficulty is caused to the structural arrangement of the transformer, and the manufacturing cost is also greatly increased.

Therefore, the existing balancing reactor structure is difficult to be applied to the rectifier transformer with higher direct current rated output voltage due to structural reasons.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a balance reactor structure for a rectifier transformer, which can be applied to a rectifier transformer with higher direct-current rated output voltage.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the balance reactor structure for the rectifier transformer comprises an iron core, wherein the iron core is a single-phase three-column iron core;

the iron core is sleeved with a primary coil;

the first section of the primary coil is led out and connected with a first copper bar, and the tail end of the primary coil is led out and connected with a second copper bar;

the primary coil is sleeved with a secondary coil;

and the first section of the secondary coil is led out and connected with a third copper bar, and the tail end of the secondary coil is led out and connected with a fourth copper bar.

Further, the primary coil is a foil coil.

Further, the secondary coil is a foil coil.

Further, the core is made of a silicon steel sheet.

Further, the winding direction of the primary coil is the same as that of the secondary coil.

Further, the first copper bar and the second copper bar are respectively connected with the primary coil in a welding mode.

Further, the third copper bar and the fourth copper bar are respectively connected with the secondary coil in a welding mode.

Further, a positive star neutral point of the rectifier transformer is connected with the first copper bar.

Further, an anti-star neutral point of the rectifier transformer is connected with the third copper bar.

Further, an iron yoke is mounted on the iron core.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a balance reactor structure for a rectifier transformer, which adopts a single-phase three-column iron core, a primary coil and a secondary coil. The primary coil and the secondary coil replace the original through copper bar with only one turn, and the primary coil and the secondary coil can be wound into a plurality of turns, so that the turn voltage can be selected according to actual needs, the sectional area and the diameter of the iron core can be further adjusted, the whole volume of the balance reactor is effectively controlled, the structure of the balance reactor is more compact, the whole arrangement of the rectifier transformer is more reasonable, and the balance reactor is applicable to the rectifier transformer with higher direct-current rated output voltage; the adoption of the structure can greatly reduce the consumption of the silicon steel sheet, ensure the good performance of the silicon steel sheet and greatly reduce the production cost; the structure is simple in principle, convenient to produce and manufacture, convenient to implement and good in popularization and application value.

Preferably, the primary coil and the secondary coil of the utility model are foil coils, the foil coils have good mechanical strength, are not easy to deform and can bear short-circuit force; the electrical strength is good, and the impulse gradient voltage is uniformly distributed; and the winding is convenient, so that the structure has better reliability.

Preferably, the iron core is embedded with the iron yoke, so that the iron core is more fastened, and the stability of the structure is improved.

Drawings

Fig. 1 is a front view of a balancing reactor structure for a rectifier transformer according to an embodiment of the present utility model;

fig. 2 is a top view of a balancing reactor structure for a rectifier transformer according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of a lead wire of a balancing reactor structure for a rectifier transformer according to an embodiment of the present utility model.

Reference numerals:

an iron core-1; primary coil-2; secondary coil-3; a first copper bar-4; a second copper bar-5; a third copper bar-6; and a fourth copper bar-7.

Detailed Description

The utility model provides a balance reactor structure for a rectifier transformer, which comprises an iron core 1, wherein the iron core 1 is a single-phase three-column iron core and is made of silicon steel sheets;

the iron core 1 is sleeved with a primary coil 2;

the first copper bar 4 is led out and connected to the first section of the primary coil 2, and the second copper bar 5 is led out and connected to the tail end of the primary coil 2;

the primary coil 2 is sleeved with a secondary coil 3;

the first section of the secondary coil 3 is led out and connected with a third copper bar 6, and the tail end is led out and connected with a fourth copper bar 7.

Here, the primary coil 2 and the secondary coil 3 are foil coils, and the primary coil 2 and the secondary coil 3 are wound in the same direction.

The first copper bar 4 and the second copper bar 5 are respectively connected with the primary coil 2 in a welding mode, and the third copper bar 6 and the fourth copper bar 7 are respectively connected with the secondary coil 3 in a welding mode.

When the electrical wiring of the rectifier transformer and the balancing reactor is completed, the positive star neutral point of the rectifier transformer is connected to the first copper bar 4, and at the same time, the negative star neutral point of the rectifier transformer is connected to the third copper bar 6.

In order to make the iron core 1 more stable, an iron yoke is embedded in the iron core 1.

The present utility model will be further described with reference to the following embodiments of the utility model and the accompanying drawings, wherein, of course, the described embodiments are merely some, but not all embodiments of the utility model.

Examples

The embodiment provides a balancing reactor structure for a rectifier transformer, and the basic principle is as follows:

the structure mainly comprises a single-phase three-column iron core and a primary and a secondary foil coil. A single-phase three-column type iron core is adopted to replace the original square iron core; the primary foil coil and the secondary foil coil replace the original through copper bar with only one turn, and as the primary foil coil and the secondary foil coil can be wound into a plurality of turns, the turn voltage can be selected according to actual needs, and further the sectional area and the diameter of the iron core can be freely selected, so that the whole volume of the balance reactor is controlled, and the problem that the volume of the balance reactor needed by the rectifier transformer is huge when the rated output voltage of direct current is higher is solved; the specific structure is as follows:

as shown in fig. 1, the coil assembly includes a core 1, a primary coil 2, a secondary coil 3, a first copper bar 4, a second copper bar 5, a third copper bar 6, and a fourth copper bar 7.

The iron core 1 and the body of the balancing reactor; the iron core 1 is arranged in the body, and the structure of the iron core 1 is a single-phase three-column type; the device body comprises a primary coil 2 with a foil type coil form, a first copper bar 4 led out from the head end of the primary coil, a second copper bar 5 led out from the tail end of the primary coil, a secondary coil 3 with a foil type coil form, and a third copper bar 6 and a fourth copper bar 7 led out from the head end of the secondary coil.

In a preferred example of the balancing reactor structure according to the present embodiment, the method includes the steps of:

step one: the current voltage of the primary coil 2 and the secondary coil 3 of the balance reactor is determined according to the valve side voltage and the current of the rectifier transformer, and then the sectional area and the diameter of the iron core 1 are adjusted by adjusting the number of turns of the coils. The copper foil size, the number of turns of the coil, the sectional area of the iron core, the diameter and the geometric dimension are selected appropriately.

Step two: as shown in fig. 1, a single-phase three-leg core is manufactured according to a selected core geometry; as shown in fig. 2, a primary coil is wound, and a first copper bar 4 led out from the head end and a second copper bar 5 led out from the tail end of the primary coil are welded at the corresponding positions of the primary coil 2; after the primary coil 2 is wound, the secondary coil 3 is then sleeved on the primary coil 2, and a third copper bar 6 led out from the head end of the secondary coil 3 and a fourth copper bar 7 led out from the tail end of the secondary coil are welded at the corresponding positions of the secondary coil 3, so that the planar reactance coil is integrally formed. The primary coil 2 and the secondary coil 3 are wound in the same direction and are opposite from head to tail.

Step three: as shown in fig. 1, the manufactured planar reactance coil is integrally fitted into the main leg of a single-phase three-leg iron core (iron core 1), and then fitted into an upper yoke, and fitted with upper iron core clamping members and the like. And (5) finishing the assembly of the whole balancing reactor.

As shown in fig. 3, the neutral point of the positive star and the neutral point of the negative star in the rectifier transformer are finally connected with the leading-out copper bars of the first sections of the primary coil 2 and the secondary coil 3 respectively, namely, the neutral point of the positive star is connected with the first copper bar 4, and the neutral point of the negative star is connected with the third copper bar 6, so that the electrical connection of the rectifier transformer and the balancing reactor is completed.

The balance reactor structure provided by the embodiment can realize the free turn voltage selection according to the requirement; and the geometric dimension of the iron core can be freely selected, so that the problem of huge volume of the balancing reactor when the direct-current rated output voltage of the rectifier transformer is higher is solved. The balance reactor has compact structure, the iron core coil is of a conventional mature type, the manufacture is easy, the connection lead of the rectifier transformer body is simple and convenient, compared with the traditional 'mouth' -shaped structure, the silicon steel sheet consumption is less, the volume of the balance reactor is smaller, and the performance of the balance reactor is well ensured while the cost of the rectifier transformer is reduced.

Although the embodiments of the present utility model have been described above with reference to the accompanying drawings and examples, the present utility model is not limited to the above-described specific embodiments and application fields, which are illustrative, instructive, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may make many forms without departing from the scope of the utility model as claimed.

Claims

1. The balance reactor structure for the rectifier transformer is characterized by comprising an iron core (1), wherein the iron core (1) is a single-phase three-column iron core;

a primary coil (2) is sleeved on the iron core (1);

the first section of the primary coil (2) is led out and connected with a first copper bar (4), and the tail end of the primary coil is led out and connected with a second copper bar (5);

a secondary coil (3) is sleeved on the primary coil (2);

the first section of the secondary coil (3) is led out and connected with a third copper bar (6), and the tail end is led out and connected with a fourth copper bar (7).

2. A balancing reactor structure for a rectifier transformer according to claim 1, characterized in that the primary coil (2) is a foil coil.

3. A balancing reactor structure for a rectifier transformer according to claim 1, characterized in that the secondary coil (3) is a foil coil.

4. A balancing reactor structure for a rectifier transformer according to claim 1, characterized in that the iron core (1) is made of silicon steel sheet.

5. A balancing reactor structure for a rectifier transformer according to claim 1, characterized in that the primary coil (2) and the secondary coil (3) are wound in the same direction.

6. The balancing reactor structure for rectifier transformer according to claim 1, wherein the first copper bar (4) and the second copper bar (5) are connected with the primary coil (2) respectively by welding.

7. The balancing reactor structure for rectifier transformer according to claim 1, characterized in that the third copper bar (6) and the fourth copper bar (7) are connected with the secondary coil (3) respectively by welding.

8. A balancing reactor structure for a rectifier transformer according to claim 1, characterized in that the positive star neutral point of the rectifier transformer is connected to the first copper bar (4).

9. A balancing reactor structure for a rectifier transformer according to claim 1, characterized in that the inverse star neutral point of the rectifier transformer is connected to the third copper bar (6).

10. A balancing reactor structure for a rectifier transformer according to claim 1, characterized in that the iron core (1) is fitted with an iron yoke.