JPS6144416Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a three-phase matching reactor.

In the conventional example, three cylindrical annular stratified iron cores are arranged with their cylindrical center lines parallel to each other.
A phase core leg is formed, and one oblong annular stratified yoke core obtained by heat-treating a double annular stratified core to linearly deform it is attached to the top and bottom of the winding surface of this core leg, respectively. However, there is one in which an insulating plate having a predetermined magnetic resistance is attached to the abutting portion. A slit is provided in each core leg in a direction along its center line, and a winding is wound around the core leg.

Hereinafter, the structure of the present invention will be described by way of an embodiment with reference to the drawings.

Fig. 1 is a front view of the present application, Fig. 2 is a side view, and Fig. 3 is a plan view, and in these figures, 1, 1', and 1'' are the same shape and two large and small grain-oriented silicon steels. This shows an elongated elliptical core leg (hereinafter abbreviated as core leg) made by heat-treating a double annular layered core made of bands 1 _a and 1 _b into a straight line. In the upper and lower yoke cores shown in Figures 1, 4, and 5, an annular stratified core made of grain-oriented silicon steel strip 3 is heat-treated to deform into a straight line while maintaining a space 10 in the center. It is made by dividing the long elliptical core 4 obtained in this way into two parts (see Figures 4 and 5). A set of yoke cores is installed at the front center of the winding surface of the upper and lower yoke cores 2 and 2', and at the top and bottom of the rear left and right ends of the winding surface of the upper and lower yoke cores 2 and 2'. The upper and lower parts of the winding layer surface of the first core leg 1 on the front side and the upper and lower parts of the winding layer surface of the second core leg 1' and third iron core leg 1'' on the rear side of the same core are interlinked and abutted. , a three-phase abutment type in which the required windings 5, 5', 5'' are wound around the iron core legs 1, 1', 1'', and an insulating plate having a predetermined magnetic resistance is attached to the abutting portion. It is a reactor.

As mentioned above, the structure of the core leg and yoke core is different from that of the conventional example and that of the present application, and the slits provided in each core leg in the conventional example are unnecessary in the present application. As a result, work efficiency is improved, and therefore,
The man-hours required to manufacture the core legs are reduced.

Next, the yoke core in the conventional example is composed of a double annular stratified core, but in the present application it is composed of a single annular stratified core. The number of man-hours is reduced by combining the parts.

Also, in Figs. 1 to 6, 9 _a and 9 _b are fastening bolt penetration holes provided in the core legs 1, 1', 1'';
In addition, _10a and _10b are upper and lower yoke cores 2 and 10b, respectively.
This is the space at the center of 2'.

The present application has the above configuration, and the upper and lower yoke cores 2 and 2' are obtained by dividing the long elliptical core 4 into two, thereby preventing circulating current within the long elliptical core 4. Upper and lower yoke cores 2, 2'
Insulating plates 6 _a , 6 _b , 7 _{a , 7} having a predetermined magnetic resistance are provided at the interlinkage abutting portions between the core legs 1 , 1 ′, and 1 ″.
_This is a 3 _{- phase} butting type reactor with fixed abutting parts and a compact iron core configuration.
This is a useful device that can be used to great effect in the field of phase reactors.

Furthermore, in most of the conventional examples mentioned above, non-oriented silicon steel plates are used as the core legs, but in the present invention, by using grain-oriented silicon steel strips, the magnetic flux density can be improved compared to the conventional example. This has the advantage of reducing the size of the leg core.

[Brief explanation of the drawing]

Figure 1 is a front view of the present application, Figure 2 is a side view of the same, Figure 3 is a plan view of the same, and Figures 4 and 5 are front views showing the manufacturing process of the yoke core, which is one of the constituent parts of the present application. FIG. 6 is a front view of the core leg of the component of the present application. 1, 1', 1''...core leg, 1 _a , 1 _b ...1,
1', 1'' constituent elements of two large and small grain-oriented silicon steel strips, 2, 2'... Yoke core, 3... Grain-oriented silicon steel strip, 4... Divide into two to make 2, 2'. Front long elliptical core, 5, 5', 5''...Winding, 6 _a , 6 _b ,
7 _a , 7 _b , 8 _a , 8 _b ... Insulating plate with a predetermined magnetic resistance, 9 _a , 9 _b ... 1, 1', 1'' bolt penetration holes, 10 ... In the center of 4 Space, 10 _a , 10 _b
...The space in the center of 2,2'.

Claims (1)

[Scope of utility model registration request] A ring-shaped laminated iron core made of a grain-oriented silicon steel strip is heat-treated to transform it into a straight line while maintaining a space in the center, and the thus obtained long elliptical iron core is divided into two equal parts.・A double annular stratified core made of two large and small grain-oriented silicon steel strips is heat-treated to transform it into a straight line at the center of the front side of the winding surface of the lower yoke core and at the left and right ends of the rear side of the winding surface of the lower yoke core. Of the three long elliptical core legs, the top and bottom of the winding surface of the first core leg and the top and bottom of the winding surface of the second and third core legs are interlinked, and each core A three-phase abutment type reactor in which the legs are wound with required windings, an insulating plate having a predetermined magnetic resistance is attached to the abutment part, and the abutment part is fixed.