JPH036004A - Winding structure for electromagnetic induction apparatus - Google Patents

Abstract

PURPOSE:To realize a small size, to simplify a structure and to lower production costs by a method wherein an insulation-coated flat-type conductor is laid to be long sideways and is wound to form one layer by an edgewise winding method, a winding is constituted and the winding is impregnated with an adhesive and hardened. CONSTITUTION:A flat-type conductor 3 is laid to be long sideways and is wound by an edgewise winding method; a one-layer winding 4 is constituted. After that, this winding is impregnated with an adhesive such as, e.g. a varnish and is hardened; in succession, a spacer 6 is wound via shields 5 at the upper part and the lower part; thereby, a winding structure is completed. In this case, the total number of turns is set to 400 turns; one layer is wound; the conductor 3 having sizes of a width A1 of 9mm and a height B1 of 1.8mm is used; a thickness of an insulating coating 7 is set to 0.1mm; then, a winding width D1 is 9.2mm and a winding height H1 is 800mm; the shields 5 with a radius of 4mm can be used. Thereby, a small size and low cost can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a winding structure for electromagnetic induction equipment used in transformers, reactors, and other electromagnetic induction equipment.

(Prior Art) Among this type of winding structure, one constructed by winding a rectangular conducting wire is already well known. FIG. 3 shows the conventional configuration.6 This figure is a cross-sectional view of the right half centered on the axis of the winding. The same applies to FIG.

In Fig. 3, reference numeral 1 denotes an insulating cylinder, and a rectangular conducting wire 3 is first placed vertically through a duct spacer 2 on its outer periphery.
Wrap in layers. Insulating spacers 6 are wound above and below this conducting wire 3 via a shield 5 having a circular cross section for electric field relaxation.

Thereafter, the duct spacer 2 and the conducting wire 3 are wound alternately in the same manner, whereby the conducting wire 3 is wound in multiple layers (four layers in the example shown). Then, spacers 6 are wrapped around the top and bottom of each conductive wire. Moreover, shields 5 are further placed above and below the outermost conductive wire. Note that 7 is an insulating coating of the conducting wire 3.

(Problem to be solved by the invention) However, according to the configuration shown in Fig. 3, one winding structure has multiple layers, so a duct spacer 2 having a predetermined dielectric strength is installed between each layer as shown in the figure. In addition, spacers 6 must be installed in each layer to hold the conducting wires in the vertical direction, which not only complicates the structure.

It also causes a rise in manufacturing costs.

Further, as the shield 5, it is not possible to use a shield having a thickness greater than the thickness of the conductive wire 3. Therefore, electric field relaxation may be limited.

Even if the total number of turns is the same, this invention is smaller than the conventional structure, allows for an ffff-R structure, and lower manufacturing costs.Although the curvature is large enough to be used as a shield, The purpose is to enable use.

(Means for Solving the Problems) The present invention consists of making a rectangular conducting wire with an insulating coating horizontally elongated and winding it in one layer by edgewise winding to form a winding wire.
A name characterized by the fact that the winding wire is impregnated with an adhesive and hardened.

(Function) When a winding is constructed using a conductor with approximately the same cross-sectional area as a conductor used in a conventional winding structure, the height of the winding is assumed to be approximately the same even if the total number of turns is the same. Also, the winding width can be significantly shortened, and the size can be reduced accordingly.

Furthermore, since the winding is made in one layer, the inconvenience of having to install a duct spacer between each layer, which is required when winding in multiple layers as in the conventional structure, is eliminated.

Since the adhesive is impregnated and cured, the windings are solidified in one piece, eliminating the need for a conventional insulating cylinder. Due to the above reasons, the device can be manufactured in a small size and at low cost.

Furthermore, since the conducting wire is made horizontally long, it becomes possible to install shields with a larger curvature than the width of the conducting wire above and below the winding, which improves the electric field relaxation effect accordingly.

(Example) An embodiment of the invention will be described with reference to FIGS. 1 and 2.

The parts with the same symbols as in Fig. 3 are as follows.

Indicates identical or corresponding parts. According to this invention,
A single-layer winding 4 is constructed by making a rectangular conducting wire 3 horizontally elongated and winding it edgewise.

It is then impregnated with an adhesive, such as varnish, and cured to solidify. Subsequently, a spacer 6 is wound above and below it with a shield 5 interposed therebetween, thereby completing the winding structure. In this case, the conventional insulating tube 1 is not used.

The above configuration will be explained using specific numerical values.

First, in the conventional configuration shown in Fig. 3, the total number of turns is 400 turns, four layers are used, and the conductor 13 has dimensions of 2 mm and 8 mm in width A2 and length B2, respectively, and the thickness of the insulation coating 7 is If it is 0.1 mm, the winding width D2 is 23°8 mm and the height H2 of one winding is 802 mm. Furthermore, the shield 5 is limited to a radius of 1).

On the other hand, in the embodiment shown in FIG.
The vertical dimension B is 9+nm, 1, and 8m, respectively, and the thickness of the insulation coating 7 is the same <0.1ml11
Then, 1 winding width D□ is 9.2 mm, and winding height H1 is 80 mm.
It becomes 0mm. Furthermore, it is possible to use a shield 5 with a radius of 4 mm.

As can be understood from the above explanation, when the conductors 3 are configured to have approximately the same cross-sectional area and the same total number of turns, the size can be reduced and the number of parts used can be reduced compared to the conventional configuration. As soon as it becomes possible.

It turns out that it is possible to use a shield with a large curvature.

(Effects of the Invention) As described in detail above, according to the present invention, it is possible to make the device smaller and cheaper than the conventional structure, and to make the electric field relaxation effect more noticeable.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of the invention, and FIG.
FIG. 3 is a sectional view of a conventional example, and FIG. 4 is a partially enlarged sectional view of FIG. 3. 3... Conductor wire, 4... Winding wire, 5... Shield, 6...
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Claims (1)

[Claims] A winding structure for electromagnetic induction equipment in which a rectangular conducting wire with an insulating coating is made horizontally long, wound in one layer by edgewise winding to form a winding wire, and the winding wire is impregnated with an adhesive and hardened. .