CN210724321U

CN210724321U - Electric reactor

Info

Publication number: CN210724321U
Application number: CN201921421445.1U
Authority: CN
Inventors: 朱宗兴; 计国平; 程惠中; 郭清友
Original assignee: Shanghai Longcheng Intelligent Equipment Co ltd
Current assignee: Shanghai Longcheng Marine Equipment Co.,Ltd.
Priority date: 2019-03-25
Filing date: 2019-08-29
Publication date: 2020-06-09
Anticipated expiration: 2029-08-29
Also published as: CN210724322U; CN210724319U; CN110011409A; CN110417116A; CN210724320U; CN110429706A

Abstract

A reactor, comprising: an upper iron yoke; the lower iron yoke and the upper iron yoke are arranged at intervals; the iron core unit is arranged between the lower iron yoke and the upper iron yoke, and two ends of the iron core unit are respectively connected with the lower iron yoke and the upper iron yoke; wherein the iron core unit includes: one end of the upper-section iron core column is connected with the upper iron yoke, and the other end of the upper-section iron core column extends towards the lower iron yoke; one end of the lower-section iron core column is connected with the lower iron yoke, and the other end of the lower-section iron core column extends towards the upper iron yoke; a middle-section core limb disposed between the upper-section core limb and the lower-section core limb; and the coil is wrapped on the outer sides of the upper section iron core column, the middle section iron core column and the lower section iron core column and is positioned between the lower iron yoke and the upper iron yoke. The utility model discloses reactor has following advantage for prior art: the circuit has the advantages of being capable of playing a role in restraining harmonic waves and limiting impact current, playing a role in power factor compensation, being good in effect and simple and reliable in circuit structure.

Description

Electric reactor

Technical Field

The utility model relates to an electricity field especially relates to electronic component, especially a reactor.

Background

Reactors (also called chokes) have been used in power supply networks for many years. The method can play a role in filtering harmonic waves, inhibiting impact current and the like. However, the filter needs to be connected with a capacitor in series to filter out harmonic waves, and active filtering or saturation filtering with electronic control is also needed in some occasions. Therefore, the circuit is complicated.

SUMMERY OF THE UTILITY MODEL

To the technical problem, an object of the utility model is to provide a solve above-mentioned technical problem's reactor.

In order to solve the technical problem, the utility model discloses a reactor, include: an upper iron yoke; the lower iron yoke and the upper iron yoke are arranged at intervals; the iron core unit is arranged between the lower iron yoke and the upper iron yoke, and two ends of the iron core unit are respectively connected with the lower iron yoke and the upper iron yoke; wherein the iron core unit includes: an upper segment leg core, one end of the upper segment leg core being connected to the upper yoke and the other end of the upper segment leg core extending toward the lower yoke; a lower segment leg, one end of the lower segment leg being connected to the lower yoke, and another end of the lower segment leg extending toward the upper yoke; a middle section core limb disposed between the upper section core limb and the lower section core limb; and the coil is wrapped on the outer sides of the upper section iron core column, the middle section iron core column and the lower section iron core column, and is positioned between the lower iron yoke and the upper iron yoke.

Air gaps exist between the upper-section core limb and the middle-section core limb and between the lower-section core limb and the middle-section core limb.

And a cushion block is arranged in the air gap.

The iron core unit is made of magnetic conductive material silicon steel.

The number of the iron core units is three, and the three iron core units are arranged at intervals.

The utility model discloses reactor has following advantage for prior art: the circuit has the advantages of being capable of playing the roles of restraining harmonic waves and limiting impact current, playing the role of power factor compensation, having better effect, being equivalent to the active filtering effect without electronic devices, having the effects of restraining inrush current, limiting voltage fluctuation and the like, and being simple and reliable in circuit structure.

Drawings

Other characteristic objects and advantages of the invention will become more apparent from a reading of the detailed description of non-limiting embodiments with reference to the following figures.

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

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is a schematic diagram of the reactor of the present invention;

fig. 4 is an electromotive force vector diagram according to an embodiment of the present invention.

Detailed Description

The following describes the reactor of the present invention in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1 to 4, the reactor of the present invention includes an upper yoke 1 and a lower yoke 2, which are arranged at intervals, and an iron core unit, which is arranged at three intervals, is connected between the lower yoke 2 and the upper yoke 1, and the iron core unit includes: an upper segment core limb 3, a middle segment core limb 4 and a lower segment core limb 5; one end of the upper-section iron core column 3 is connected with the upper iron yoke 1, and the other end of the upper-section iron core column 3 extends towards the lower iron yoke 2; one end of the lower-section core limb 5 is connected with the lower iron yoke 2, and the other end of the lower-section core limb 5 extends towards the upper iron yoke 1; the middle-section core limb 4 is disposed between the upper-section core limb 3 and the lower-section core limb 5. Air gaps 6 are present between the upper leg core limb 3 and the middle leg core limb 4 and between the lower leg core limb 5 and the middle leg core limb 4. A spacer 7 is arranged in the air gap 6. The coil 8 is wrapped around the outer sides of the upper-stage core limb 3, the middle-stage core limb 4 and the lower-stage core limb 5 and is located between the lower iron yoke 2 and the upper iron yoke 1.

The utility model relates to a for having the shunting structure of taking a percentage, can make things convenient for the regulation of inductance value. Different reactance rates can be obtained, and therefore the effect of eliminating harmonic waves is better achieved. The reactor is provided with an iron core (iron core unit), and an upper section iron core column 3, a middle section iron core column 4 and a lower section iron core column 5 of the iron core unit are made of magnetic conductive material silicon steel sheets. The function is to play a role of magnetic conduction. Unlike a conventional reactor, an air gap 6 is left between them. Because the magnetic permeability of the air is far lower than that of the silicon steel sheet, the magnetic permeability of the whole magnetic circuit can be changed, and the magnetic flux of the whole magnetic circuit cannot be changed too fast due to the large change of the current in the coil. It is possible to reduce the variation in inductance (reactance value) caused by an excessive variation in current.

The during operation, the utility model discloses establish ties with synchronous generator, insert in the power supply line. The utility model discloses establish ties in network circuit, synchronous machine is taken a percentage through the reactor shunting and is connected with the reactor. The circuit is equivalent to a T-type filter circuit.

In an ac circuit, when viewed in terms of the phase of current and voltage, the current appears capacitive if it leads the voltage, and inductive if it lags the voltage. In the circuit, the utility model discloses present the perception, and synchronous machine then has two kinds of running state: when the synchronous generator absorbs the energy of a power grid and operates as a motor, the motor operates in an over-excitation state and is capacitive; when E0< U, the motor is operated in an underexcited state and appears inductive.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited thereto, and that various changes and modifications may be made without departing from the spirit of the invention.

Claims

1. A reactor, characterized by comprising: an upper iron yoke; the lower iron yoke and the upper iron yoke are arranged at intervals; the iron core unit is arranged between the lower iron yoke and the upper iron yoke, and two ends of the iron core unit are respectively connected with the lower iron yoke and the upper iron yoke; wherein the iron core unit includes: an upper segment core limb, an upper end of which is connected with the upper yoke; a lower segment core limb, a lower end of the lower segment core limb being connected to the lower yoke; a middle section core limb disposed between the upper section core limb and the lower section core limb; and the coil is wrapped on the outer sides of the upper section iron core column, the middle section iron core column and the lower section iron core column, and is positioned between the lower iron yoke and the upper iron yoke.

2. The reactor according to claim 1, characterized in that air gaps are present between the upper-stage core limb and the middle-stage core limb and between the lower-stage core limb and the middle-stage core limb.

3. The reactor according to claim 2, characterized in that a spacer is provided in the air gap.

4. The reactor according to claim 1, wherein the core unit is made of silicon steel, which is a magnetically conductive material.

5. The reactor according to claim 1 or 4, characterized in that the number of the core units is three, and three of the core units are provided at intervals.