JPS59217312A - Core type reactor with gap - Google Patents

Abstract

PURPOSE:To inhibit the secular deterioration of a core by a vibration, and to improve the cooling effect of the core by arranging a plurality of gap materials among core blocks in a multiple manner in a triple concentrical circle and disposing one gap materials on straight lines tying outer circumferences from the centers of the core blocks. CONSTITUTION:When a core block 11 such as a radial type core is manufactured, core blanks 21 made of silicon steel bands are laminated through adhesives in the radial direction, and formed to a columnar block. Adhesives are applied on both surfaces of a plurality of gap materials such as columnar porcelains 12 and the gap material are arranged in a multiple manner so as to form triple concentrical circles among mutual stacked core blocks 11. The porcelains 12 at every circumference of circles are disposed and shaped mutually zigzag, and arranged so that there are at least one porcelains 12 on arbitrary straight lines tying outer circumferences from the centers 22 of the core blocks, and bonded and fixed to upper and lower core blocks with adhesives applied on both surfaces of the porcelains 12. Accordingly, the gap materials are arranged optimally, and the secular deterioration of the core is inhibited and quality is improved while the cooling effect of the core can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an iron core reactor with a gear lug, which has an improved iron core tightening structure.

[Technical background of the invention and its problems]

Geared core type reactors have several gaps in their core legs due to their characteristics, and as shown in Figure 1, the gap area is susceptible to vibration and noise due to the magnetic attraction force caused by the magnetic flux (2) passing through the gap (1). Becomes the main source.

In addition, leakage magnetic flux of the magnetic flux (2) passing through the gap (1) that spreads once to the outside of the core and returns to the core again causes eddy current loss in the core portion near the gap (1), and the magnetic flux of the silicon steel strip. Due to the directional dependence, the temperature locally increases.

In order to particularly reduce vibration and noise, this gap (1) is generally constructed by installing a strong gap material having a large elastic modulus, such as porcelain.

For example, in a radial core type reactor, the conventional gap configuration is as shown in Fig. 2, in which a plurality of cylindrical porcelain pieces (5) are placed on top of an iron core block (3) made by radially arranging core punches and bonding them. The main landing gear is constructed by arranging them concentrically at approximately equal intervals on their respective circumferences, and overlapping all the iron core blocks (not shown) thereon. Adhesive is applied to both sides of the porcelain (5) and bonded to the upper and lower core blocks (3) to increase the rigidity of the entire core leg.

The arrangement of the porcelain (5) as the gap material allows the magnetic attraction force generated in the gap (1) to be shared relatively evenly, but the iron core between the porcelain (5) in the circumferential direction If there is a place where the adhesion is weak between the core punches (6), the porcelain (5) is in contact and does not share the stress, so the adhesive layer between the core punches may crack due to deterioration over time. There was a risk that the iron core punching (6) would shift.

Furthermore, considering the oil flow as a cooling medium, the oil flow (7) in the radial direction flows evenly between the porcelains, but the oil flow (7) in the circumferential direction (
8) had problems that needed to be resolved, such as oil stagnation and the cooling effect not being improved.

[Purpose of the invention]

The present invention was made in consideration of the above points.
The purpose is to provide a geared iron core reactor that can improve quality by suppressing aging deterioration of the iron core due to vibration, and also improve the cooling effect of the iron core.

[Summary of the invention]

In order to achieve such an object, the present invention arranges a plurality of gap materials between the core blocks in a multiplex arrangement of at least triple concentric circles, and the gap materials on each circumference are formed in a staggered arrangement, and By arranging at least one gap material on a straight line connecting the center to the outer periphery of the iron core, it is possible to suppress aging deterioration of the iron core due to vibration, improve quality, and improve the cooling effect of the iron core. do.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An iron core reactor with a gear according to an embodiment of the present invention will be described below with reference to the drawings. In Figure 3, an iron core block (1υ) is connected to a plurality of gap materials such as cylindrical porcelain (1υ
21 is arranged as described later, the iron core block (LD) is stacked to form a gap part (13), the main leg (Is'i is formed), the winding (IQ is attached to this, and the side leg α
η and the yoke (18) are assembled to form a reactor main body, which is housed in a container (not shown) and filled with an insulating medium such as insulating oil (20a) to form a geared iron core reactor.

In FIG. 4, for example, in the case of a radial type core, the core block circle is formed by laminating core punched silicon steel strips Qυ in the radial direction via an adhesive to form a cylindrical block. Between stacking iron core blocks (11J), apply adhesive to both sides of a plurality of gap materials, for example, cylindrical porcelain rings, to form a multiplex arrangement of at least triple concentric circles. 121 are arranged in a valve bird-like arrangement, and are arranged so that at least one piece of porcelain O2 exists on an arbitrary straight line connecting the center of the iron core block (from the two molten metals to the outer periphery). It is adhesively fixed to the upper and lower iron core blocks using adhesive applied to both sides.Although the gap material is made of porcelain, it may be made of strong ceramic with a large elastic modulus.

Next, the effects of the present invention will be explained. By arranging the porcelain Q2+ as described above, the iron core block α
]) All the core punches (21) constituting the porcelain (12) are always in contact with, that is, bonded to,
Even if there is a weak point in the adhesion between the core punches (for example, insufficient adhesion), cracks between the core punches 0D,
Alternatively, since the risk of misalignment is extremely reduced, by preventing an increase in vibration and noise caused by such weak points, aging deterioration can be suppressed and quality can be improved.

In addition, the oil flow for cooling by an insulating medium such as insulating oil also flows in a staggered manner, that is, in a zigzag manner, as shown by the oil flow (c) shown by the arrow, so each part of the main landing gear (151) is cooled uniformly, and the cooling effect is It also improves.

〔Effect of the invention〕

As explained above, according to the present invention, an iron core reactor with gears is provided which can optimize the arrangement of the gap material, suppress aging deterioration of the iron core, improve quality, and improve the cooling effect of the iron core. can be provided.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the magnetic flux distribution in a general core gap, Figure 2 is a cross-sectional view of the gap portion of a conventional gapped core reactor, and Figure 3 is a diagram of the glue axle body of the geared core reactor of the present invention. A partially sectional front view, FIG. 4 is a sectional view taken along the line IV-ff in FIG. 3. αυ...Iron core block, Mutsumi...Porcelain, (13...
·gap. a9... Main landing gear, housing 6)... winding, housing 7)... side landing gear, (2)... yoke. θ0...Reactor body, (20a)...Insulating oil. Ql)... Core punched, (2 views...center, f23
)...Oil flow. Agent Patent Attorney Inoue - Male No. 1 Activity No. 4

Claims (1)

[Claims] Windings are attached to the main core legs formed by stacking core blocks with gap material in between, and assembled via the core legs and yoke, or the accelerator body is housed inside a container and the interior is filled with an insulating medium. In the geared core type reactor, the plurality of gap members disposed between the core blocks are arranged in at least triple concentric circles, and the gap members on each circumference are formed in a staggered arrangement, and An iron core reactor with a gear lug, characterized in that at least one of the gap members is disposed on a straight line connecting the center of the iron core block to the outer periphery thereof.