JP2001160513A - Amorphous wound core transformer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an amorphous wound core transformer in which a coil and a core can be protected against damage caused by an electromagnetic mechanical force which acts on them in the axial direction of the coil. SOLUTION: A transformer is equipped with coils 1, amorphous wound cores 2 arranged in rows in its widthwise direction interlinking the coils 1, and clamping metal fittings 3. A coil end reinforcing plate 5 is provided between the yokes of the amorphous wound cores 2 adjacent to each other in the widthwise direction of the cores. The coil end reinforcing plate 5 is made to enable its side edge to butt against the edge face 11 of the coil 1 and the clamping metal fittings 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an amorphous wound iron core transformer, and more particularly to a transformer provided with a wound iron core using an amorphous magnetic alloy ribbon (hereinafter referred to as "amorphous wound iron core"). .

[0002]

2. Description of the Related Art A transformer is known as a substation device for transforming a voltage and a current by an electromagnetic induction action. A transformer has an iron core and a plurality of coils, and a transformer having an amorphous wound iron core has been proposed. A conventional amorphous wound iron core transformer has a structure in which a coil conductor is combined with a strip conductor such as a copper strip or an aluminum strip, and a round wire or a square wire, and is generally used to transform a voltage from a high voltage to a low voltage. Had been used. In the case where the pressure is changed from a high pressure to a high pressure and from a low pressure to a low pressure, a square wire or a round wire or a combination thereof is used for the coil winding.

[0003] When one of the windings of the coil uses a strip conductor such as a copper strip or an aluminum strip and the other is a round wire or a square wire,
Since the electromagnetic mechanical force generated at the time of short circuit appears only in the radial direction of the winding, it is not necessary to take measures against the coil strength in the axial direction. Therefore, it is necessary to take measures against the strength of the coil in the axial direction.

[0004] In an amorphous wound iron core transformer, it has been proposed to coat the iron core with a support (Japanese Patent Application Laid-Open No. Hei.
No. 50511, JP-A-1-68912, JP-A-2-239607, JP-A-6-163281, and JP-A-11-97254) do not take measures against coil strength.

[0005]

SUMMARY OF THE INVENTION The present invention solves the problems of the prior art, and an amorphous wound iron core capable of suppressing damage to a coil and an iron core received by an electromagnetic mechanical force acting in the axial direction of the coil. The purpose was to provide a transformer.

[0006]

In order to achieve the above object, the present invention comprises a coil, an amorphous core wound in a plurality of rows in a width direction of a core interlinking the coil, and a fastener. The present invention is an amorphous wound core transformer having a coil end reinforcing plate between yoke portions of amorphous wound cores adjacent to each other in the iron core width direction.

[0007] The present invention is also an amorphous wound iron core transformer, wherein the coil end reinforcing plate has a side end butted against a coil end and a fastener.

The present invention is an amorphous wound iron core transformer, wherein the coil is a thin-conductor stack coil.

Further, the present invention is the amorphous wound iron core transformer, wherein the coil is a coil composed of a square wire, a round wire, or a combination thereof.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described. Regarding the embodiment of the amorphous transformer of the present invention,
This will be described with reference to FIGS. FIG. 1 is an explanatory cross-sectional view of an amorphous wound iron core transformer according to a first embodiment in which a coil end reinforcing plate is incorporated. FIG. 2 is an explanatory perspective view of an iron core coil assembly of the amorphous wound iron core transformer according to the first embodiment. FIG.
It is a perspective explanatory view of the iron core coil assembly of the amorphous wound iron core transformer of Example 2. FIG. 4 is a perspective view illustrating an iron core coil assembly of an amorphous wound iron core transformer according to a third embodiment.

Embodiment 1 will be described. The amorphous wound core transformer of the present embodiment is an example applied to a three-phase transformer having a five-leg wound core structure with two cores arranged in two rows, and is a cross-sectional explanatory view of FIG. 1 and a perspective explanatory view of the core coil assembly of FIG. As shown in FIG. 1, a coil 1, an amorphous wound iron core 2, a fastener 3, a coil support 4, a coil end reinforcing plate 5, and the like are provided. Coil 1
It is composed of a thin conductor stack coil or square or round wire or a combination thereof. Amorphous core 2
Consists of 2 rows x 4 pieces in the width direction of the iron core interlinking with the coil 1. Each amorphous wound iron core 2 deforms the amorphous magnetic ribbon into a U-shape, inserts it into the coil 1, and abuts the tips. Formed. The coil 1 and the amorphous core 2 are formed in an iron core coil assembly. Fastener 3
Is attached to the iron core coil assembly via the coil support 4. The coil end reinforcing plates 5 are incorporated between adjacent upper and lower yoke portions of the amorphous core 2 arranged in a plurality of rows. The side end of the coil end reinforcing plate 5 is abutted on the coil end 11 and the fastener 3. Since the end portion 11 of the coil 1 is suppressed by the fastener 3 via the coil end portion reinforcing plate 5, it is possible to prevent the coil 1 from expanding in the coil axis direction.
By having such a structure, the amorphous transformer according to the first embodiment can change the voltage from the high voltage to the high voltage without changing the structures of the coil 1, the winding core 2, and the fasteners when the voltage is changed from the high voltage to the low voltage. Thus, it is possible to obtain a transformer that transforms from low pressure to low pressure, and it is possible to suppress damage to the coil 1 and the wound core 2 due to electromagnetic mechanical force generated in the coil axis direction at the time of short circuit.

Embodiment 2 will be described. As shown in the perspective view of the iron core coil assembly of FIG. 3, the amorphous transformer of the present embodiment is different from the first embodiment in that the coil end reinforcing plate 5b is provided.
In that it has a plate-shaped spacer 6b in addition to
Others are the same. The spacer 6b is inserted between the yoke of the amorphous wound iron core 2b and the coil end 11b, and connects the central portion 61b to the coil end reinforcing plate 5b.
In the recess 51b. The coil end 11b is more reliably reinforced by the coil end reinforcing plate 5b and the spacer 6b than in the first embodiment. It is possible to attach the spacer 6b to the coil end reinforcing plate 5b and integrate them.

Embodiment 3 will be described. As shown in the perspective view of the iron core coil assembly of FIG. 4, the amorphous transformer of this embodiment is different from the first and second embodiments in that the coil end reinforcing plate 5c is U-shaped. Others are the same. The coil end 11c is more reliably reinforced by the coil end reinforcing plate 5c of the third embodiment than in the first embodiment, as in the second embodiment.

In each of the above embodiments, a three-phase five-leg amorphous wound iron core has been described. However, in all amorphous wound iron core transformers including a single-phase transformer and having a plurality of rows in the width direction of the iron core interlinking the coil. Can obtain the same effect. When a square wire, a round wire, or a combination thereof is used for the coil winding, it is necessary to take measures against the electromagnetic mechanical force acting in the axial direction of the coil.

In the above configuration, by arranging the reinforcing plate between the upper and lower yoke portions of the wound core arranged in a plurality of rows, it is possible to suppress the damage of the coil and the iron core which are received by the electromagnetic mechanical force acting in the axial direction of the coil. Can be expected.

[0016]

According to the present invention, it is possible to obtain an amorphous wound iron core transformer capable of suppressing damage to a coil and an iron core received by electromagnetic mechanical force acting in the axial direction of the coil.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view of an amorphous wound iron core transformer according to a first embodiment, in which a coil end reinforcing plate is incorporated.

FIG. 2 is an explanatory perspective view of an iron core coil assembly of the amorphous wound iron core transformer according to the first embodiment;

FIG. 3 is a perspective view illustrating an iron core coil assembly of an amorphous wound iron core transformer according to a second embodiment.

FIG. 4 is an explanatory perspective view of an iron core coil assembly of an amorphous wound iron core transformer according to a third embodiment;

[Explanation of symbols]

 1, 1b, 1c Coil 11, 11b, 11c Coil end 2, 2b, 2c Amorphous core 3 Clamp 4 Coil support 5, 5b, 5c Coil end reinforcing plate 6b Spacer

Claims (4)

[Claims] 1. A transformer comprising a coil, an amorphous core wound in a plurality of rows in a width direction of the core interlinking with the coil, and a fastener, wherein a yoke of the amorphous core adjacent to the core width direction. An amorphous wound iron core transformer comprising a coil end reinforcing plate between portions. 2. The amorphous wound iron core transformer according to claim 1, wherein the coil end reinforcing plate has a side end abutting against the coil end and a fastener. 3. The amorphous wound iron core transformer according to claim 1, wherein the coil is a thin conductor stack coil. 4. The amorphous wound iron core transformer according to claim 1, wherein the coil is a coil formed of a square wire, a round wire, or a combination thereof.