JPH08107025A - Tubular winding of transformer and its manufacture - Google Patents

Abstract

PURPOSE: To provide a tubular winding of a transformer wherein a winding operator can operate winding readily, electromagnetic centers of windings coincide with each other and short-circuit mechanical force generated in a winding is restrained low. CONSTITUTION: A winding is wound from a fixed position in an axial direction during winding operation, and a difference of winding height is obtained from a finish size and a design size of a winding. When a winding height does not attain a design size, a correction ring 10 is inserted for adjusting a height. When it exceeds a design size, an adjustment member 6A or 6B of a lower part of a winding is removed and a height is adjusted. The adjustment member 6A or 6B is moved between a keep ring 4A and an insulation piece 8A or between a keep ring 5A and the insulation piece 8A to allow electromagnetic centers of windings to coincide each other and a winding position is adjusted, and short-circuit mechanical force generated in a winding is restrained low.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding of a transformer,
In particular, it relates to the adjustment of the winding height by the dimensional tolerance of the insulating coated conductor when the cylindrical winding is manufactured.

[0002]

2. Description of the Related Art In a cylindrical (layer) winding, one (or a plurality of) insulating coated conductors are wound in the axial direction of the winding, and an insulating layer (necessary for each winding) A cooling duct having axial duct pieces arranged therein is arranged, and the next layer (cylindrical coil) is wound around this insulating layer (or a cooling duct if necessary). Since such a cylindrical winding has a small radial cross-sectional area, the winding height is designed during the winding work during the manufacturing of the cylindrical winding in order to secure short-circuit resistant mechanical force during a short circuit. It is wound while adjusting the dimensions by inserting a correction insulator to the dimensions.

[0003]

However, when designating the height of the cylindrical winding at the time of designing, the tolerance of the insulating coated conductor (electric wire), the tolerance of the thickness of the insulating coating of the conductor, and the dimensional margin are set. This must be taken into consideration, and during the manufacture of the winding, the work of inserting the correction ring while estimating the finished dimension of the winding height is a task to be addressed in both design and manufacturing. The design department requires a clear design policy, and the manufacturing department requires experience from workers.

The present invention has been made in view of the above points, and it is easy for a winding worker to perform the winding work, and the electromagnetic centers of the windings in the axial direction can be easily aligned. You can
An object of the present invention is to provide a cylindrical winding of a transformer in which a short-circuit mechanical force generated in the winding is suppressed.

[0005]

In order to achieve the above-mentioned object, the winding of the transformer of the present invention is wound from a predetermined position in the axial direction during the winding work, and the finished dimension of the winding (the winding axis Direction dimension, that is, the winding height) and the design dimension, find the difference in the winding height, and if the winding height does not reach the design dimension, wrap the correction ring corresponding to the shortage. Insert between the wire and the retaining ring at the bottom of the winding. If the winding height exceeds the design size, remove the adjusting member below the winding and adjust. Further, the adjusting member is moved to the upper part of the winding so that the electromagnetic centers of the windings in the axial direction coincide with each other, and the position of the winding is adjusted.

[0006]

In the structure of the cylindrical winding of the transformer according to the present invention, the axial (height) dimension of the winding and the electromagnetic center in the axial direction of the windings are accurately determined by inserting the correction ring and adjusting the adjusting member. By matching the design value with, the short-circuit mechanical force generated in the winding can be suppressed low.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cylindrical winding of a transformer of the present invention will be described below with reference to the drawings.

FIG. 1 is a configuration diagram of a winding showing an embodiment of a cylindrical winding of a transformer of the present invention. In FIG. 1, a low voltage winding 2 and a high voltage winding 3 are wound around the outer circumference of an iron core 1. Although the low-voltage winding 2 and the high-voltage winding 3 are each shown as a cylindrical winding, the present invention can be applied to one of the cylindrical windings even when either one is a cylindrical winding.

At the upper part of the low-voltage winding 2, a pressing ring 4A is
A pressing ring 4B is arranged at the lower part, and insulating members 7A, 7B are arranged so as to press the upper and lower pressing rings 4A, 4B from both sides. The insulating members 7A and 7B are formed by insulating pieces 8A and 8B attached to the insulating ring Li, respectively.

6A is a lower pressing ring 4B and an insulating member 7
It is an adjusting member (means) for adjusting the axial position of the cylindrical winding body provided between B, and in the present embodiment, as shown in FIG. Has a keyway. In FIG. 2, (A) is a plan view and (B) is a perspective view attached to the vertical duct piece 12.

On the upper part of the high voltage winding 3, a pressing ring 5A is
A presser ring 5B is disposed in the lower part, and an adjusting member 6B and an insulating member 7B are provided below the lower presser ring 5B.
It is arranged in steps. Further, the insulating pieces 8A attached to the insulating ring Li are arranged in two stages on the upper pressing ring 5A. Reference numeral 12 is a vertical duct piece. The adjusting member 6B also has a shape as shown in FIG.

A clamp ring 9 is provided on the uppermost insulating ring Li to tighten the entire winding. Further, as shown in FIG. 3, the winding height correction ring 10 is
Each layer has the same inner and outer diameters as each layer (cylindrical coil) of the low-voltage winding 2 and the high-voltage winding 3, and is cut at one place. 11 is a break.

In the winding work of each layer, when winding the insulating coated conductor, first, the insulating coated conductor is wound from one end side and the number of turns of the design instruction value is wound. At this time, the finished size of the winding (the length of the winding in the axial direction, that is, the winding height) is not taken into consideration.

When the winding is finished, the finished dimension of the winding is measured, and if there is a difference from the design dimension, the difference is obtained,
When the design instruction size is not reached, the correction ring 10 is dimensioned corresponding to the shortage, between the low pressure winding 2 and the low pressure side holding ring 4B, and in the case of the high voltage winding, the high pressure side. Inserted between the press ring 5B and the press ring 5B to compensate for the shortage of the finished dimensions of the winding.

Next, according to the insertion amount of the correction ring 10 so that the electromagnetic centers of the low voltage winding 2 and the high voltage winding 3 coincide with each other, the adjusting member 6A is pressed between the pressing ring 4A and the insulating piece 8A.
Alternatively, the adjusting member 6B may be attached to the pressing ring 5A and the insulating piece 8A.
Move the appropriate size between and align the electromagnetic centers of both windings.

When the finished size of the winding exceeds the design size, the adjustment members 6A and 6B at the lower part of the winding are removed by a necessary amount for adjustment. Then, the adjusting member 6A is pulled out from between the low-pressure side pressing ring 4B and the insulating piece 8B so that the electromagnetic centers of the low-voltage winding 2 and the high-voltage winding 3 in the axial direction coincide with each other. The adjusting member 6B is inserted between the insulating piece 8A and the high-pressure side pressing ring 5A and the insulating piece 8A.
Move it between and align the electromagnetic centers of both windings.

FIG. 4 is a block diagram of the second embodiment of the present invention.
In the embodiment of FIG. 1, the adjusting piece is used as the adjusting member 6A, 6B for aligning the electromagnetic centers of the low-voltage winding and the high-voltage winding, but in the present embodiment, the adjusting piece 6A, 6B is used. As shown in FIG. 5, without using FIG.
The correction ring 10 is used as the adjustment ring 10 '.

In the case of FIG. 1, since the adjusting members 6A, 6B by the adjusting pieces are installed by utilizing the portions of the lower pressing rings 4B, 5B protruding downward of the vertical duct piece 12.
Although the dimension for installing the insulating piece 8B becomes short, it becomes difficult to install the insulating piece 8B, and a jig or the like for setting the center is required, but in the embodiment of FIG. 4, the adjusting ring 10 'is corrected. Since the vertical duct piece does not need to be used because it is the same ring shape as the work ring, the vertical duct under the lower presser ring can be used as before, the installation of the insulating piece is easy, and no jig is required. There is an effect.

FIG. 6 shows a third embodiment of the present invention. This embodiment makes it easy to match the electromagnetic centers of the low voltage winding 2 and the high voltage winding 3 with each other.

That is, when the finished dimension of the winding 2 (3) does not reach the design instructed dimension, the correction ring 10 is wound by the thickness to reach the design instructed dimension as in the above embodiment.
It is inserted between (3) and the presser ring 4B (5B) to correct the shortage of the winding height.

Next, according to the insertion amount of the correction ring 10, the electromagnetic centers of the low-voltage winding 2 and the high-voltage winding 3 coincide with each other.
Insulating member 7B (7A) and high pressure side pressing ring 5B (5A)
The adjustment piece 6 between the two is moved by a required amount between the insulating member 7A (7B) and the high-voltage side holding ring 5A (5B) so that the electromagnetic center of the high-voltage winding 3 coincides with the electromagnetic center of the low-voltage winding 2. Let

In this embodiment, the adjusting piece 6 is provided on one side of the high-voltage winding 3, but it may be provided on one side of the low-voltage winding 2.

In this embodiment, the adjusting member can be moved at any time until the assembly of the contents is completed, and the adjusting member (adjusting piece) 6 for adjusting the electromagnetic center is collected in one of the high voltage and low voltage windings. Since the adjustment is made, the adjustment becomes easy.

FIG. 7 shows a fourth embodiment of the present invention. In this embodiment, the adjusting member is formed by an adjusting ring 10 ', and the electromagnetic center of the high voltage winding 3 and the low voltage winding 2 is wound at a low voltage. This is the case where the line 2 side is adjusted and matched.

The axial length of the winding is adjusted in the same manner as in FIG. 7, and the electromagnetic center is adjusted according to the insertion amount of the correction ring 10 by the insulating member 8B (8A) and the low pressure side holding ring 4.
Adjusting ring 10 'between B (4A) and insulating member 8A
The electromagnetic center of the low voltage winding 2 is made to coincide with the electromagnetic center of the high voltage winding 3 by moving the necessary amount between (8B) and the low pressure side pressing ring 4A (4B).

In this embodiment as well, the adjustment may be made on one side of the high voltage winding 3.

In the third and fourth embodiments, the insulating pieces 8A and 8B of the insulating members 7A and 7B are formed in one stage,
This is the case when the amount is supplemented by the presser rings 5A and 5B.
In this way, since the insulation piece can be installed only by the wedge inside the low-voltage winding, the problem of installation of the insulation piece is solved on the high-voltage winding side.
Also, the number of parts is reduced.

Since the third and fourth embodiments cannot be applied when the axial length of the winding exceeds the design dimension, in such cases, the first and second implementations are required. Apply the example.

[0029]

As described above, according to the winding of the transformer of the present invention, (1) the winding is finished from a predetermined position in the axial direction during the winding work, and the finished dimension of the winding (axial direction of the winding) Dimension, that is, the winding height) and the design dimension, and if the winding height does not reach the design dimension, insert a correction ring at the bottom of the winding to correct the winding height. Therefore, the winding operator does not have to worry about the winding height and only works by winding the insulated conductor, and after that, the compensation ring may be inserted. Don't rely on me.

If the winding height exceeds the design dimension,
Adjust by pulling out the adjustment member under the winding.

(2) Further, by moving and adjusting this adjusting member so that the electromagnetic centers of the windings in the axial direction coincide with each other, the electromagnetic centers of the windings coincide with each other, and when the short circuit occurs, the electromagnetic centers in the winding are The generated short circuit mechanical force can be suppressed.

(3) Further, in the second embodiment, since the dimension of the vertical duct piece under the lower holding ring can be used as usual, the installation of the insulating piece becomes easy,
No need for jigs. Moreover, since the correction member can use the correction ring, the number of parts is reduced.

Excellent effects such as the above can be obtained.

[Brief description of drawings]

FIG. 1 is a winding configuration diagram showing a first embodiment of the present invention.

2A and 2B are explanatory views of an adjusting member, and FIG. (B) A perspective view.

FIG. 3 is a plan view of a correction ring.

FIG. 4 is a winding configuration diagram showing a second embodiment of the present invention.

FIG. 5 is a view showing another example of the adjusting member.

FIG. 6 is a configuration diagram of a third embodiment of the present invention.

FIG. 7 is a configuration diagram of a fourth embodiment of the present invention.

[Explanation of symbols]

 1 ... Iron core 2 ... Low voltage winding 3 ... High voltage winding 4A, 4B ... Low pressure side holding ring 5A, 5B ... High pressure side holding ring 6A, 6B ... Adjusting member (adjusting piece) 7A, 7B ... Insulating member 8A, 8B ... Insulating piece 9 ... Clamp ring 10 ... Correction ring 10 '... Adjusting member (adjustment ring) 11 ... Break 12 ... Vertical duct piece 13, 14 ... Insulating cylinder

Claims (7)

[Claims] 1. A cylindrical winding in which a cylindrical winding body, in which a winding obtained by winding an insulating coated conductor a predetermined number of times in the axial direction of a winding is pressed by a holding ring from above and below, is insulated and arranged in multiple layers in the radial direction. In each wire, each of the cylindrical winding bodies has a winding formed by winding an insulating coated conductor a predetermined number of times in the winding axis direction, upper and lower holding rings attached to the upper and lower ends of the winding axis, and It is provided so that it can be inserted / removed between the insulating member that presses the upper and lower presser rings of the presser ring from both sides, and can be inserted and removed between the upper or lower presser ring and the insulating member, and the axial position of the cylindrical winding body can be adjusted. A cylindrical winding of a transformer, comprising: 2. The cylindrical winding of a transformer according to claim 1, wherein the adjusting member is provided on one of the low-voltage side cylindrical winding body and the high-voltage side cylindrical winding body. 3. The adjusting member is composed of a piece of adjusting piece, and is inserted between the retaining ring of the cylindrical winding body of each layer and the insulating member, and one end side thereof is provided inside the winding of the first layer. 3. The cylindrical winding of a transformer according to claim 1, wherein the cylindrical winding is fitted and fixed to a directional duct piece. 4. The adjusting member is formed of a ring-shaped adjusting ring inserted between the insulating member and the holding ring of the cylindrical winding body of each layer. Cylindrical winding of transformer. 5. A cylindrical winding body is formed by pressing a winding obtained by winding an insulating coated conductor a predetermined number of times in the axial direction of the winding with pressing rings from both ends of the winding. The cylindrical winding body is radially insulated in multiple layers. A method for manufacturing a cylindrical winding body, in which both ends of a pressing ring are supported by insulating members through adjusting members, wherein each cylindrical winding body is axially arranged from one end side during winding manufacture. Wind the predesigned number of turns and measure the finished length of the winding when finished, and if this length does not reach the design dimension, correct between the lower part of the winding and the presser ring. Insert the ring to meet the design dimensions, then move the adjusting member between the insulating member and the holding ring to the upper or lower part of the holding ring to adjust the axial position of the cylindrical winding body, It is characterized in that the electromagnetic centers in the axial direction are made to coincide with each other. Method for manufacturing cylindrical winding of transformer. 6. A cylindrical winding body is formed by pressing a winding obtained by winding an insulation-coated conductor a predetermined number of times in the axial direction of the winding with pressing rings from both ends of the winding. The cylindrical winding body is radially insulated in multiple layers. A method for manufacturing a cylindrical winding body, in which both ends of a pressing ring are supported by insulating members through adjusting members, wherein each cylindrical winding body is axially arranged from one end side during winding manufacture. Wind the predesigned number of turns and measure the finished length of the winding when finished, and if this length does not reach the design dimension, correct between the lower part of the winding and the presser ring. Insert the ring to fit the design dimensions, and if it exceeds the design dimensions, remove the adjusting member provided between the lower holding ring and the insulating member to adjust the height, and adjust the axis between the windings. The electromagnetic center of the direction is moved by moving the adjusting member to adjust the vertical position of the winding. A method for manufacturing a cylindrical winding of a transformer, which is characterized in that 7. The electromagnetic center is adjusted by adjusting one of the low-voltage side cylindrical winding body and the high-voltage side cylindrical winding body so as to coincide with the electromagnetic center of the other cylindrical winding body. 7. The method for manufacturing a cylindrical winding of a transformer according to claim 5 or 6.