CN215988394U

CN215988394U - Single-phase positive and negative series reactor for reactive compensation

Info

Publication number: CN215988394U
Application number: CN202122128293.XU
Authority: CN
Inventors: 葛绍志; 朱靖志
Original assignee: Jiangsu Ltec Electric Co ltd
Current assignee: Jiangsu Ltec Electric Co ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-03-08
Anticipated expiration: 2031-09-03

Abstract

The utility model relates to the technical field of single-phase reactors, and particularly discloses a single-phase positive and negative series reactor for reactive compensation. The single-phase positive and negative series reactor for reactive power compensation comprises an upper iron yoke, a lower iron yoke, a left iron yoke and a right iron yoke which are enclosed into a frame structure, wherein a core column is arranged in the center of the frame structure, and a closed magnetic circuit is formed among the core column, the upper iron yoke, the lower iron yoke, the left iron yoke and the right iron yoke; the core column is sleeved with a framework, and a first coil and a second coil are wound on the framework; the first coil and the second coil are arranged at intervals up and down and are connected in series, wherein one coil is in a left winding direction, and the other coil is in a right winding direction. The single-phase positive and negative series reactor for reactive compensation can reduce unnecessary inductive load generated by a product to a circuit.

Description

Single-phase positive and negative series reactor for reactive compensation

Technical Field

The utility model relates to the technical field of single-phase reactors, in particular to a single-phase positive and negative series reactor for reactive compensation.

Background

A single-phase reactor refers to a device that acts as an impedance in a circuit. A common single-phase reactor generally employs a set of inductive coils. In an electric power system, a single-phase reactor is also used in many applications. However, although the effect of suppressing harmonics and limiting the switching inrush current can be achieved by connecting a conventional single-phase reactor in series to the compensation circuit, an unnecessary inductive load is generated on the circuit, and thus, reactive power is generated, thereby causing unnecessary loss.

Therefore, it is necessary to design a single-phase forward-reverse series reactor for reactive power compensation to solve the above problems.

Disclosure of Invention

The utility model aims to provide a single-phase positive and negative series reactor for reactive compensation, which can reduce unnecessary inductive load generated by a product to a circuit.

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

a reactive compensation single-phase positive and negative series reactor comprises an upper iron yoke, a lower iron yoke, a left iron yoke and a right iron yoke which enclose into a frame structure, wherein a core column is arranged at the center of the frame structure, and a closed magnetic circuit is formed among the core column, the upper iron yoke, the lower iron yoke, the left iron yoke and the right iron yoke;

the core column is sleeved with a framework, and a first coil and a second coil are wound on the framework; the first coil and the second coil are arranged at an interval from top to bottom and are connected in series, wherein one coil is in a left winding direction, and the other coil is in a right winding direction.

Furthermore, the number of turns of the first coil is consistent with that of the second coil.

Further, the second input end of the second coil is disposed near the first output end of the first coil.

Furthermore, the first output end and the second input end are arranged up and down.

Furthermore, two sides of the upper iron yoke are provided with upper clamping pieces; the two sides of the lower iron yoke are provided with lower clamping pieces; pressing strips are arranged on two sides of the left iron yoke and two sides of the right iron yoke, the upper ends of the pressing strips are located between the upper clamping piece and the upper iron yoke, and the lower ends of the pressing strips are located between the lower clamping piece and the lower iron yoke;

the two upper clamping pieces, the pressing strips and the upper iron yoke are connected in a locking mode through penetrating screws; the two lower clamping pieces, the pressing strips and the lower iron yoke are connected in a locking mode through penetrating screws; the upper clamping piece and the lower clamping piece which are positioned on the same side are connected through two pull rods.

Furthermore, the top ends of the two diagonally arranged pull rods are connected with a hanging ring in a threaded manner.

The utility model has the beneficial effects that:

1. according to the single-phase forward-reverse series reactor for reactive compensation, the framework is sleeved on the mandrel, and the first coil and the second coil are wound on the framework, so that the first coil and the second coil are arranged at intervals up and down and are connected in series, one of the first coil and the second coil is in a left winding direction, and the other one of the first coil and the second coil is in a right winding direction. Thus, the inductance of the first coil is complementary to the inductance of the second coil. The reactor is applied to a reactive power compensation device, not only can play a role in absorbing circuit harmonic waves and protecting surge current of a compensation capacitor, but also can reduce unnecessary inductive load generated by the reactor to a circuit and reduce unnecessary loss.

2. The single-phase positive and negative series reactor for reactive compensation can reduce the iron core consumption of the reactor and reduce the manufacturing cost.

Drawings

FIG. 1 is a schematic structural diagram of a single-phase forward-reverse series reactor for reactive power compensation provided by the utility model;

fig. 2 is a schematic cross-sectional structure diagram of a single-phase forward-reverse series reactor for reactive power compensation provided by the utility model.

In the figure: 1-upper yoke; 2-lower yoke; 3-left yoke; 4-right iron yoke; 5-core column; 6-a framework; 71-a first coil; 711 — first output; 72-a second coil; 721-a second input; 81-upper clamp; 82-a lower clip; 83-pressing strips; 84-a pull rod; 9-hanging ring.

Detailed Description

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1 to 2, a reactive compensation single-phase forward-reverse series reactor includes an upper yoke 1, a lower yoke 2, a left yoke 3, a right yoke 4, a core column 5, a bobbin 6, a first coil 71, and a second coil 72.

Specifically, in the reactive compensation single-phase forward-reverse series reactor, the upper iron yoke 1, the lower iron yoke 2, the left iron yoke 3 and the right iron yoke 4 enclose a frame structure, and the core column 5 is positioned at the center of the frame structure and forms a closed magnetic circuit with the upper iron yoke 1, the lower iron yoke 2, the left iron yoke 3 and the right iron yoke 4.

The frame 6 is sleeved on the core column 5, and the first coil 71 and the second coil 72 are wound on the outer periphery of the frame, spaced from each other up and down and connected in series. One of the first coil 71 and the second coil 72 is wound in the left direction, and the other is wound in the right direction. The first coil 71 and the second coil 72 have the same number of turns.

To facilitate the series connection of the first coil 71 and the second coil 72, the second input end 721 of the second coil 72 may be disposed near the first output end 711 of the first coil 71. In this embodiment, the first output terminal 711 and the second input terminal 721 are disposed up and down. The input end of the first coil 71 and the output end of the second coil 72 are also disposed up and down.

In the single-phase positive and negative series reactor for reactive power compensation, an upper clamping piece 81 is arranged on two sides of an upper iron yoke 1; lower clamping pieces 82 are arranged on two sides of the lower iron yoke 2; pressing strips 83 are arranged on both sides of the left iron yoke 3 and both sides of the right iron yoke 4, the upper ends of the pressing strips 83 are positioned between the upper clamping piece 81 and the upper iron yoke 1, and the lower ends of the pressing strips are positioned between the lower clamping piece 82 and the lower iron yoke 2; wherein, the two upper clamping pieces 81, the pressing strips 83 and the upper iron yoke 1 are connected by a through screw rod in a locking way; the two lower clamping pieces 82, the pressing strips 83 and the lower iron yoke 2 are also in locking connection through a penetrating screw; the upper clip member 81 and the lower clip member 82 on the same side are connected by two tie rods 84.

Further, the top ends of two pull rods 84 arranged diagonally are screwed with a hanging ring 9 so as to facilitate hoisting and carrying of the reactor.

The single-phase positive and negative series reactor for reactive compensation adopts the first coil 71 and the second coil 72 which are wound in different directions and connected in series, and the inductance value of the first coil 71 is complementary with the inductance value of the second coil 72, so that the reactor not only can play a role in absorbing circuit harmonic waves and protecting surge current of a compensation capacitor, but also can reduce unnecessary inductive load generated by the reactor to a circuit and reduce unnecessary loss. In addition, by adopting the single-phase positive and negative series reactor for reactive compensation, the iron core consumption of the reactor can be reduced, and the manufacturing cost is reduced.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. The single-phase forward-reverse series reactor for reactive compensation is characterized by comprising an upper iron yoke (1), a lower iron yoke (2), a left iron yoke (3) and a right iron yoke (4) which enclose into a frame-shaped structure, wherein a core column (5) is arranged at the center of the frame-shaped structure, and a closed magnetic circuit is formed among the core column (5), the upper iron yoke (1), the lower iron yoke (2), the left iron yoke (3) and the right iron yoke (4);

the core column (5) is sleeved with a framework (6), and a first coil (71) and a second coil (72) are wound on the framework (6); the first coil (71) and the second coil (72) are arranged at intervals up and down and are connected in series, wherein one coil is in a left winding direction, and the other coil is in a right winding direction.

2. A reactive power compensation single-phase forward-reverse series reactor as claimed in claim 1, characterized in that the number of turns of said first coil (71) and said second coil (72) is the same.

3. A single-phase forward-reverse series reactor for reactive power compensation according to claim 1, characterized in that the second input (721) of the second coil (72) is arranged close to the first output (711) of the first coil (71).

4. A reactive power compensation single-phase forward-reverse series reactor as claimed in claim 3, characterized in that said first output terminal (711) and said second input terminal (721) are arranged one above the other.

5. A single-phase forward-reverse series reactor for reactive power compensation according to any one of claims 1 to 4, characterized in that the upper iron yoke (1) is provided with upper clamping pieces (81) at both sides; the two sides of the lower iron yoke (2) are provided with lower clamping pieces (82); pressing strips (83) are arranged on two sides of the left iron yoke (3) and two sides of the right iron yoke (4), the upper ends of the pressing strips (83) are located between the upper clamping piece (81) and the upper iron yoke (1), and the lower ends of the pressing strips are located between the lower clamping piece (82) and the lower iron yoke (2);

the two upper clamping pieces (81), the pressing strips (83) and the upper iron yoke (1) are connected in a locking way through a penetrating screw rod; the two lower clamping pieces (82), the pressing strips (83) and the lower iron yoke (2) are connected in a locking way through a penetrating screw rod; the upper clamping piece (81) and the lower clamping piece (82) which are positioned on the same side are connected through two pull rods (84).

6. A reactive power compensation single-phase forward-reverse series reactor as claimed in claim 5, characterized in that the top ends of two diagonally arranged pull rods (84) are screwed with a hanging ring (9).