JPH10256049A - Induction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a cooling efficiency by mounting an insulation screening cylinder so that the inner vertical cooling path is bisected in the radial direction, providing a flow-bending part between an inner cylinder and the screening cylinder, between an outer cylinder and the screening cylinder, and between the screening cylinders for each specific number of lamination stages of a disc winding. SOLUTION: An insulation screening cylinder 15 is mounted so that an inner vertical cooling path 11 is divided into two portions in radius direction. In the screening cylinder 15, an insulation cylindrical part 14 that is divided for each lamination of a disc winding 1 is laminated in a plurality of stages in vertical direction. Flow-bending parts 20 and 21 are provided between an inner cylinder 3 and the screening cylinder 15 and between an outer cylinder 4 and the screening cylinder 15 for each specific number of lamination stages of a coil winding 1A inside the disc winding 1 and a coil winding 1B outside it. The flow-bending part 20 consists of insulation plates 20A and 20B, allows the insulation plate 20A to project at the inner cylinder 3, and at the same time a gap that becomes the channel of a cooling medium is provided between the right edge of the insulation plate 20A and the cylinder 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction device comprising a disk winding formed with a zigzag cooling passage through which a cooling medium such as insulating gas or insulating oil flows.

[0002]

2. Description of the Related Art FIG. 10 is a one-side cross-sectional view showing a main part of a conventional induction device. A plurality of disk windings 1 wound around a shaft 2 are vertically stacked via a horizontal cooling path 10. An insulating inner cylinder 3 and an outer cylinder 4 are disposed on the inner and outer diameter sides of the disk winding 1, respectively. An inner vertical cooling passage 8 is formed between the disc winding 1 and the inner cylinder 3, and an outer vertical cooling passage 9 is formed between the disc winding 1 and the outer cylinder 4. Further, from the inner cylinder 3 and the outer cylinder 4, along the horizontal cooling path 10, the bent portions 5, 6 formed of horizontal insulating plates extend in opposite directions. A gap that serves as a cooling medium flow path is provided between the right end of the turning section 5 and the outer cylinder 4, and a gap that serves as a cooling medium flow path also exists between the left end of the turning section 6 and the inner cylinder 3. Is provided. The cooling medium flowing into the vertical cooling passages 8 and 9 from the lower part of the disk winding 1 rises while flowing in a zigzag manner as indicated by an arrow 7.

[0003] In FIG. 10, if the flow portions 5 and 6 are not interposed, the flow of the cooling medium is almost only in the vertical cooling paths 8 and 9, and the cooling medium flowing into the horizontal cooling path 10 is well known. Is very small. The folding parts 5 and 6 are shown in FIG.
This is for forcibly turning the flow of the cooling medium in the horizontal cooling path 10 in the opposite direction, as shown by the arrow 7 of 0. That is, the folding portions 5 and 6 are formed by alternately protruding insulating plates from the inner cylinder 3 and the outer cylinder 4 for each predetermined number of laminations of the disk winding 1. As a result, a large amount of the cooling medium also flows through the horizontal cooling path 10, and the cooling efficiency of the disk winding 1 is increased. The predetermined number of stacked layers is usually four or five. The folding portions 5 and 6 may be interposed at each stage of the disk winding 1. However, since the flow path resistance increases, the folding portions 5 and 6 are usually interposed at a plurality of stages. .

[0004]

However, there is a demand for further improving the cooling efficiency of the disk winding of the conventional induction motor as described above, and for minimizing the cooling of the disk winding and the cooling medium as much as possible. Has been issued. As another means for improving the cooling efficiency of the disk winding, a method of interposing an internal vertical cooling passage in the radial direction of the disk winding is generally known.

FIG. 11 is a one-side cross-sectional view showing the configuration of a main part of a different conventional induction device. The disk winding 1 is wound in the middle in the radial direction with an internal vertical cooling path 11 interposed therebetween, and the disk winding 1 is composed of an inner winding 1A and an outer winding 1B. Other configurations are the same as those in FIG. FIG.
First, assuming that there are no flow portions 5 and 6, the contact area between the disk winding 1 and the cooling medium is increased by the amount of the cooling medium increased in the internal vertical cooling path 11. Therefore,
In the case where there are no turning portions 5 and 6, the cooling efficiency is improved by interposing the internal vertical cooling path 11. However, when the bent portions 5 and 6 are interposed as shown in FIG. 11, the amount of the cooling medium flowing toward the winding 1B decreases, and the temperature distribution in the disk winding 1 becomes uneven. That is, in FIG. 11, the flow of the cooling medium is as indicated by arrows 12 and 13, but the flow of the cooling medium on the winding 1B side indicated by the dotted arrow 13 is
Is extremely less than in the case of. The cooling medium flowing in the horizontal cooling path 10 bends upward at the internal vertical cooling path 11 and hardly flows to the outer vertical cooling path 9 side. Therefore, the winding 1B side is hardly cooled, and the winding portions 5 and 6 are hardly cooled.
The effect of the interposition is hardly seen.

FIG. 12 is a one-side cross-sectional view showing the configuration of a main part of a further different conventional induction device. The disk winding 1 is wound in the middle of the radial direction with two internal vertical cooling paths 11 and 28 interposed therebetween, and the disk winding 1 is wound on the inner winding 1A, the intermediate winding 1C, and the outer winding 1C. And the winding 1B. Other configurations are the same as those in FIG. The flow of the cooling medium is as indicated by arrows 35, 37 and 36. Although the cooling efficiency should be improved by increasing the number of the vertical cooling passages 28, the flow of the cooling medium on the winding 1B side indicated by the dotted arrows 37 and 36 is more extreme than that indicated by the solid arrow 35. Less. The cooling medium flowing in the horizontal cooling passage 10 bends upward at the internal vertical cooling passages 11 and 28 and hardly flows to the outer vertical cooling passage 9 side. Therefore, also in this case, the winding 1B side is difficult to be cooled, and
Almost no cooling effect due to the interposition.

When a vertical cooling path is provided in the middle of the radial direction as shown in FIGS. 11 and 12, the cooling effect cannot be obtained even if the folding part is interposed. Due to the improper way to do so. An object of the present invention is to further enhance the cooling efficiency of a disk winding having a vertical cooling path in the middle in the radial direction.

[0008]

According to the present invention, in order to achieve the above object, a disk winding having a single or a plurality of internal vertical cooling passages in the middle in the radial direction passes through a horizontal cooling passage. A plurality of layers are stacked vertically in the vertical direction, and an inner cylinder and an outer cylinder that are insulated are arranged on the inner diameter side and the outer diameter side of the disk winding via the inner vertical cooling path and the outer vertical cooling path, respectively. The cooling medium flows from the lower part of the plate winding into the vertical cooling path, and the bent part for forcibly turning the flow direction of the cooling medium in the horizontal cooling path in the opposite direction has a predetermined number of stacked layers of the disk winding. In the induction device provided for each, an insulating partition cylinder is interposed so as to radially divide the internal vertical cooling passage into two parts, between the inner cylinder and the partition cylinder, and between the outer cylinder and the partition cylinder. When there are multiple internal vertical cooling passages, a partition circle Each folding stream portion may be provided correspondingly to a predetermined stacking number of disc windings between the adjacent.
By interposing a partition cylinder in the internal vertical cooling path, the flow of the cooling medium is divided into a plurality of parts in the radial direction, and the cooling medium separates each winding of the disk winding from the lower part to the upper part in the axial direction. Start to cool. Moreover, since each of the divided windings has no internal vertical cooling path, the distribution of the flow of the cooling medium is exactly the same as that shown in FIG. Therefore, the disk winding is equivalently divided into a plurality of parts and cooled, the contact area between the disk winding and the cooling medium is increased, and the disk winding having a vertical cooling path in the radial direction is provided. Even in the case of a wire, the cooling efficiency can be increased.

In such a configuration, the bent portion may be an insulating plate projecting from the inner cylinder, the outer cylinder, or the partition cylinder and extending along the horizontal cooling passage. Thereby, the vertical direction of the internal vertical cooling passage can be closed at the insulating plate, and the flow direction of the cooling medium in the horizontal cooling passage is reversed. In such a configuration, the turning portion may be an insulating ring that fills the space between the inner cylinder, the outer cylinder, or the partition cylinder and the disc winding at the location that forms the turning portion. Thereby, the vertical direction of the internal vertical cooling channel can be closed at the insulating ring, and the direction of the flow of the cooling medium in the horizontal cooling channel is reversed.

[0010] In such a configuration, the disk winding at the location forming the folding portion is wound until it comes into close contact with the inner diameter surface or the outer diameter surface of the partitioning cylinder, and the folding portion is constituted by the disk winding itself. You may make it become. Thereby, the vertical direction of the internal vertical cooling passage can be closed at the disk winding close to the partition cylinder, and the flow direction of the cooling medium in the horizontal cooling passage is reversed.

[0011] In this configuration, the partitioning cylinder is formed by vertically stacking a plurality of insulating cylindrical portions divided for each lamination of the disk windings, and the cylindrical portions are formed on the inner and outer diameter surfaces of each cylindrical portion. Insulating spacing pieces may be joined to maintain the spacing between the internal vertical cooling paths. Thereby, before the winding process of the disk winding, a product in which the spacer is joined to the cylindrical portion in advance is manufactured. Thereby, in the winding process of the disk winding, only the cylindrical portion with the spacing piece is wound, so that the winding operation becomes very easy and the winding process is shortened.

In such a configuration, the partitioning cylinder is formed by vertically stacking a plurality of cylindrical portions divided for each lamination of the disk winding, and is provided on both side surfaces of the cylindrical portion at the position where the folding portion is formed. Insulating rings for maintaining the interval between the internal vertical cooling passages may be joined. Before the winding process of the disk winding, a product in which an insulating ring is joined to a cylindrical portion in advance is manufactured. Thus, in the winding process of the disk winding, the winding operation is greatly facilitated and the winding process is shortened because only the cylindrical portion with the insulating ring is wound at the bent portion.

In this configuration, the partitioning cylinder is formed by vertically stacking a plurality of cylindrical portions divided for each lamination of the disk windings, and one side surface of the cylindrical portion at the position where the bent portion is formed. An insulating ring for keeping the interval between the internal vertical cooling passages may be joined to the other side surface, and a spacing piece for keeping the interval between the internal vertical cooling passages may be joined to the other side surface. Prior to the winding process of the disk winding, a product in which a spacer and an insulating ring are joined to a cylindrical portion in advance is manufactured. As a result, in the winding process of the disk winding, the winding work is greatly simplified and the winding process is shortened because only the cylindrical portion provided with the spacing piece and the insulating ring is wound at the bent portion. You.

In such a configuration, a notch through which the horizontal spacer penetrates may be formed in the cylindrical portion in order to maintain a space between the horizontal cooling passages of the disk winding. Thereby,
In the winding process of the disk winding, it is not necessary to cut the horizontal spacer of the horizontal cooling path at the partition cylinder one by one, and the number of parts of the horizontal spacer is reduced.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments. FIG. 1 is a one-side cross-sectional view illustrating a configuration of a main part of an induction device according to an embodiment of the present invention. An insulating partition cylinder 15 is interposed so as to divide the internal vertical cooling path 11 into two parts in the radial direction (the left-right direction in the drawing). The partitioning cylinder 15 is formed by vertically stacking a plurality of insulating cylindrical portions 14 divided for each lamination of the disk windings 1. Between the inner cylinder 3 and the partition cylinder 15 and the outer cylinder 4
Between each of the turning portions 20 and 21 between the
Are provided for each predetermined number of laminations of the inner winding 1A and the outer winding 1B of the disk winding 1. The folding part 20 is composed of insulating plates 20A and 20B. The insulating plate 20A is provided to protrude from the inner cylinder 3 and a gap serving as a cooling medium flow path is formed by the insulating plate 2A.
It is provided between the right end of 0A and the partition cylinder 15.
On the other hand, the insulating plate 20B is also provided so as to protrude from the outer cylinder 4, and a gap serving as a flow path for the cooling medium is provided between the left end of the insulating plate 20B and the partitioning cylinder 15. In addition, the turning part 21
Are composed of insulating plates 21A and 21B, each of which protrudes from the partitioning cylinder 15. The insulating plate 21A extends radially inward and has a gap serving as a flow path for the cooling medium between the inner cylinder 3 and the left end of the insulating plate 21A. On the other hand, the insulating plate 21B extends radially outward and has a gap serving as a flow path for the cooling medium between the outer cylinder 4 and the right end of the insulating plate 21B.

FIG. 2 is an exploded perspective view of a main part of FIG. However, FIG. 2 is illustrated excluding the disk winding. Insulating spacing pieces 17 are joined to the inner diameter surface and the outer diameter surface of the cylindrical portion 14 serving as a partition cylinder. Further, notches 19 are formed at the top and bottom of each of the cylindrical portions 14. A disc winding (not shown) is brought into contact with the radial surface of the spacing piece 17. That is, the spacing piece 17 is for maintaining the spacing between the internal vertical cooling passages 11 (FIG. 1). On the other hand, a horizontal spacer 18 penetrates through a hole formed by the upper and lower cutouts 19 of the cylindrical portion 14 in order to maintain an interval between the horizontal cooling passages 10 (FIG. 1). Thereby, before the winding process of the disk winding 1, a product in which the spacer 17 is joined to the cylindrical portion 14 is manufactured in advance. Thereby, in the winding process of the disk winding 1, only the cylindrical portion 14 with the spacing piece 17 is wound, so that the winding process is shortened. Further, by forming the notch 19 in advance, it is not necessary to cut the horizontal spacer 18 at the cylindrical portion 14, and the number of parts of the horizontal spacer 18 can be reduced. Thereby, the manufacturing cost of the winding is reduced.

1 and 2 are the same as those of the conventional structure, and the same parts are denoted by the same reference characters and will not be described in detail. Returning to FIG. 1, the internal vertical cooling path 11
With the partition cylinder 15 interposed therebetween, the flow of the cooling medium is radially divided, and the cooling medium separately cools the inner winding 1A and the outer winding 1B from the bottom to the top in the axial direction. . The flow of the cooling medium in each of the windings 1A and 1B is as indicated by arrows 16A and 16B, respectively. That is, the flow of the cooling medium is symmetric with respect to the partition cylinder 15. Moreover, the distribution of the flow of the cooling medium in the winding 1A is exactly the same as in the case of FIG. 10 without the internal vertical cooling path. Therefore, the disk winding 1 is equivalently divided into two and cooled, and the contact area between the disk winding 1 and the cooling medium increases at the internal vertical cooling path 11. Therefore, the cooling efficiency of the disk winding 1 is improved as compared with the case of FIG. Moreover, since there is no place where the flow of the cooling medium is hard to flow as indicated by the arrow 13 in FIG. 11, the cooling efficiency is naturally improved as compared with the case of FIG. Therefore, even in the case of a disk winding having a vertical cooling path in the middle in the radial direction, the cooling efficiency can be improved.

FIG. 3 is a one-side cross-sectional view showing a main part of an induction device according to another embodiment of the present invention. Folding part 2
7 is composed of insulating plates 20A and 27B, the insulating plate 27B protrudes from the partitioning cylinder 15, and a gap serving as a flow path for the cooling medium is provided between the right end of the insulating plate 27B and the outer cylinder 4. . In addition, the folding part 26 is formed by the insulating plates 21A, 26A.
B, the insulating plate 26B protrudes from the outer cylinder 4 and has a gap serving as a flow path for the cooling medium between the partitioning cylinder 15 and the left end of the insulating plate 26B. Other configurations are the same as those in FIG. That is, the case of FIG.
The only difference is the directions of the insulating plates 27B and 26B interposed in the winding 1B. The flow of the cooling medium in each of the windings 1A and 1B is indicated by arrows 16A and 16B.
It is exactly the same from 5 onwards. Therefore, also in this case, the cooling efficiency of the disk winding 1 is improved as compared with the conventional case.

FIG. 4 is a one-side cross-sectional view showing a main configuration of an induction device according to still another embodiment of the present invention. The folding part 22 is composed of the partition cylinder 15 and the winding 1A, and insulating rings 22A and 22B filling the gap between the partition cylinder 15 and the winding 1B. Other configurations are the same as those in FIG. The flow of the cooling medium in each of the windings 1A and 1B is almost the same as in the case of FIG. 1 as indicated by arrows 16A and 16B. That is, the insulating rings 22A, 22B
At this point, the vertical direction of the internal vertical cooling passage 11 can be closed, and the flow direction of the cooling medium in the horizontal cooling passage 10 is reversed. The cooling efficiency of the disk winding 1 in this case is:
This is the same as in FIG. This generally means that the bent portion is formed by insulating rings 22A, 22 as shown in FIG.
2B shows that it may be constituted by 2B. Therefore,
In FIG. 4, instead of the insulating plates 20A and 20B, the bent portion 20 is also provided between the left end face of the upper winding 1A and the inner cylinder 3 and between the right end face of the winding 1B and the outer cylinder 4 respectively. It can also be constituted by an insulating ring to be filled.

FIG. 5 is an exploded perspective view of a main part of FIG. However, FIG. 5 also excludes the disk winding. Insulating spacing pieces 17 are joined to the inner and outer diameter surfaces of the upper cylindrical portion 14 serving as a partition cylinder. On the other hand, insulating rings 22 on the inner and outer diameter surfaces of the lower cylindrical portion 14 are provided.
A and 22B are joined. Other configurations are the same as those in FIG. A disc winding (not shown) is brought into contact with the radial surfaces of the spacing piece 17 and the insulating rings 22A and 22B. That is, the spacing piece 17 and the insulating rings 22A, 22B
Keep the space between the internal vertical cooling passages 11 (FIG. 4). In this configuration, the insulating rings 22A and 22B are joined at the place where the bent portion 22 is present instead of the spacing piece 17 in FIG. 2, but also in this case, before the winding process of the disk winding 1, The spacer 17 and the insulating ring 22 are attached to the cylindrical portion 14.
A in which A and 22B are joined is manufactured in advance. Thereby, in the winding process of the disc winding 1, the spacing piece 1
Since only the cylindrical portion 14 with 7 is wound, the winding process is shortened.

FIG. 6 is a one-side cross-sectional view showing the configuration of a main part of an induction device according to still another embodiment of the present invention. The folding part 24 is composed of the partition cylinder 15 and the winding 1A or the outer cylinder 4
Insulating ring 22 for filling between the wire and the winding 1B
A, 24B. Other configurations are the same as those in FIG. The insulating ring 22A has the same configuration as that of FIG. 4, but an insulating ring 24B is arranged on the outer cylinder 4 side. The flow of the cooling medium in each of the windings 1A and 1B is substantially the same as that in FIG. 3 as indicated by arrows 16A and 16B, and the distribution of the flow in each of the windings 1A and 1B is the same. Therefore, the cooling efficiency of the disk winding 1 is the same as that of FIG. In the case of FIG. 6 as well, instead of the insulating plates 20A and 27B, the winding 1
An insulating ring may be filled between the left end face of A and the inner cylinder 3 and between the left end face of the winding 1B and the partition cylinder 15, respectively.

FIG. 7 is an exploded perspective view of a main part of FIG. However, FIG. 7 is also described excluding the disk winding. An insulating ring 22A having an insulating property is joined to the inner diameter surface of the lower cylindrical portion 14, and the spacing piece 17 is joined to the outer diameter surface. Other configurations are
It is the same as FIG. The spacing piece 17 and the insulating ring 22
A disk winding (not shown) is brought into contact with a surface in the radial direction between the A and 22B. Lower cylindrical part 14 in the case of FIG.
In this case, the insulating ring 22B on the outer diameter surface is merely replaced with the spacing piece 17, and also in this case, before the winding process of the disc winding 1,
One in which the spacer 17 and the insulating ring 22A are joined to the cylindrical portion 14 is manufactured in advance. Thereby, the disk winding 1
In the winding step, the spacing ring 17 and the insulating ring 2
Since only the cylindrical portion 14 with 2A is wound, the winding process is shortened.

FIG. 8 is a one-side cross-sectional view showing a main part of an induction device according to still another embodiment of the present invention. The inner winding 1A of the second disk winding 1 from the bottom of the figure is wound until it comes into close contact with the inner diameter surface of the partition cylinder 15, and the outer winding 1B also comes into close contact with the outer diameter surface of the partition cylinder 15. It is wound until you. The vertical direction of the internal vertical cooling path 11 is closed at the ends 25A and 25B of the disk winding 1 which is in close contact with the partitioning cylinder 15, and the turning portion 25 is formed. Other configurations are the same as those in FIG. At the turning portion 25, the direction of the flow of the cooling medium in the horizontal cooling path 10 is reversed, and the flow of the cooling medium is indicated by arrows 16A and 16A.
6B is the same as in FIG. Therefore, the cooling efficiency of the disk winding 1 in this case is the same as in FIG. This indicates that the winding portion may generally be constituted by the disk winding 1 itself. Note that the winding may be formed by projecting the disc winding 1 toward the inner cylinder 3 or the outer cylinder 4. However, projecting the disc winding 1 toward the inner diameter side or the outer diameter side may be an electric field. This is not a very good way to increase concentration. Forming the bent portion 25 inside the disk winding 1 as shown in FIG. 8 does not cause any problem because it does not concentrate the electric field.

FIG. 9 is a one-side cross-sectional view showing the configuration of a main part of an induction device according to still another embodiment of the present invention. Insulating partition cylinders 15 and 30 are interposed so as to divide the two internal vertical cooling passages 11 and 28 in the radial direction (left and right directions in the drawing). This partition cylinder 15,3
Numeral 0 is formed by vertically stacking a plurality of insulating cylindrical portions 14 divided for each lamination of the disk windings 1. Between the inner cylinder 3 and the partition cylinder 15, between the partition cylinders 15 and 30, and between the outer cylinder 4 and the partition cylinder 30.
The winding portions 29 and 32 are provided in the inner winding 1A, the intermediate winding 1C, and the outer winding 1B of the disk winding 1 for every predetermined number of laminations. The turning portion 29 is composed of insulating plates 29A, 29B, and 29C. The insulating plate 29A is protruded from the inner cylinder 3 and a gap serving as a flow path for the cooling medium is provided between the right end of the insulating plate 29A and the partitioning cylinder 15. It is provided in. The insulating plate 29B protrudes from the partitioning cylinder 30, and a gap serving as a flow path for the cooling medium is provided between the partitioning cylinder 15 and the left end of the insulating plate 29B. On the other hand, the insulating plate 29C is also provided so as to protrude from the partitioning cylinder 30, and a gap serving as a flow path for the cooling medium is provided between the right end of the insulating plate 29C and the outer cylinder 4. In addition, the folding part 32 is formed of the insulating plate 3.
The insulating plate 32A is formed of 2A, 32B, and 32C. The insulating plate 32A protrudes from the partitioning cylinder 15, and a gap serving as a flow path for the cooling medium is provided between the left end of the insulating plate 32A and the inner cylinder 3. The insulating plate 32B is also provided so as to protrude from the partition cylinder 15, and a gap serving as a flow path for the cooling medium is provided between the partition cylinder 30 and the right end of the insulating plate 32B. On the other hand, the insulating plate 32 </ b> C also protrudes from the outer cylinder 4, and a gap serving as a flow path for the cooling medium is provided between the left end of the insulating plate 32 </ b> C and the partitioning cylinder 30. Other configurations are the same as those in FIG.

In FIG. 9, the internal vertical cooling passages 11, 2
8 is provided with partition cylinders 15 and 30, respectively, so that the flow of the cooling medium is divided into three in the radial direction, and from the bottom to the top in the axial direction, the cooling medium flows through the inner winding 1A and the inner winding 1C. The outer windings 1B are separately cooled. The flow of the cooling medium in each of the windings 1A, 1C and 1B is as indicated by arrows 16A, 16B and 16C, respectively. That is, the flow of the cooling medium indicated by the arrows 16A and 16B is symmetrical with respect to the partition cylinder 15. On the other hand, the flow of the cooling medium indicated by arrows 16B and 16C is also symmetrical with respect to the partition cylinder 30. Moreover, the distribution of the flow of the cooling medium in the windings 1A and 1B is exactly the same as that in the case of FIG. 10 having no internal vertical cooling path. Therefore, the disk winding 1 is equivalently divided into three and cooled, and the contact area between the disk winding 1 and the cooling medium increases at the internal vertical cooling passages 11 and 28. Therefore, the cooling efficiency of the disk winding 1 is further improved as compared with the case of FIG. In addition, since there is no place where the flow of the cooling medium is difficult as indicated by arrows 36 and 37 in FIG. 12, the cooling efficiency is naturally improved as compared with the case of FIG. Therefore, even in the case of a disk winding having two vertical cooling paths in the middle in the radial direction, the cooling efficiency can be improved.

It should be noted that, in FIG.
May be an insulating ring as shown in FIG. 4 instead of the insulating plate, or the disk winding 1 itself as shown in FIG. In addition, the flow portions 29,
32 may be configured. Further, three or more internal vertical cooling passages may be provided, and a partition cylinder may be interposed in each of the vertical cooling passages.

[0027]

As described above, according to the present invention, the insulating partition cylinder is interposed so as to radially divide the internal vertical cooling passage into two parts, and is provided between the inner cylinder and the partition cylinder and the outer cylinder. In the case where a plurality of internal vertical cooling passages are interposed between the partitioning cylinders and the internal vertical cooling passages, the respective bent portions are provided between the partitioning cylinders for every predetermined number of laminations of the disk winding. Thereby,
The cooling efficiency of the disk winding having a vertical cooling path in the middle in the radial direction can be increased, and the size of the winding of the induction device and the cooler of the cooling medium can be reduced.

In such a configuration, the partitioning cylinder is formed by vertically stacking a plurality of insulating cylindrical portions divided for each lamination of the disk windings, and the cylindrical portions are formed on the inner diameter surface and the outer diameter surface of each cylindrical portion. Insulating spacing pieces are joined to maintain the spacing between the internal vertical cooling channels. Thereby, the winding process is shortened and the manufacturing cost of the winding of the induction machine is reduced. In such a configuration, the partitioning cylinder is formed by vertically stacking a plurality of cylindrical portions divided for each lamination of the disk winding, and the vertical portions are formed on both side surfaces of the cylindrical portion at the location where the folding portion is formed. Insulating rings for maintaining the intervals of the cooling passages are respectively joined. Thereby, the winding process is shortened and the manufacturing cost of the winding of the induction machine is reduced.

In this configuration, the partitioning cylinder is formed by vertically stacking a plurality of cylindrical portions divided for each lamination of the disk windings, and one side surface of the cylindrical portion at the position where the diverting portion is formed. An insulating ring for maintaining the interval between the internal vertical cooling paths is joined to the other side, and a spacing piece for maintaining the interval between the internal vertical cooling paths is joined to the other side surface. Thereby, the winding process is shortened, and the manufacturing cost of the winding of the induction machine is reduced.

In such a configuration, a notch through which the horizontal spacer penetrates is formed in the cylindrical portion in order to keep the interval between the horizontal cooling passages of the disk winding. Thereby, the number of parts of the horizontal spacer can be reduced, and the manufacturing cost of the winding of the induction device is reduced.

[Brief description of the drawings]

FIG. 1 is a one-side cross-sectional view showing a main configuration of an induction device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a main part of FIG. 1;

FIG. 3 is a one-side cross-sectional view showing a configuration of a main part of an induction device according to a different embodiment of the present invention.

FIG. 4 is a one-side cross-sectional view showing a configuration of a main part of an induction device according to still another embodiment of the present invention.

FIG. 5 is an exploded perspective view of a main part of FIG. 4;

FIG. 6 is a one-side cross-sectional view showing a main configuration of an induction device according to still another embodiment of the present invention.

FIG. 7 is an exploded perspective view of a main part of FIG. 6;

FIG. 8 is a one-side cross-sectional view showing a main part configuration of an induction device according to still another embodiment of the present invention.

FIG. 9 is a one-side cross-sectional view showing a main configuration of an induction electric machine according to still another embodiment of the present invention.

FIG. 10 is a one-side cross-sectional view showing a main part configuration of a conventional induction device.

FIG. 11 is a one-side cross-sectional view showing a configuration of a main part of a conventional different induction device.

FIG. 12 is a one-side cross-sectional view showing a configuration of a main part of a further different conventional induction device.

[Description of References] 1: disk winding, 3: inner cylinder, 4: outer cylinder, 14: cylindrical part, 15, 30: partition cylinder, 8: vertical cooling path inside,
9: Outer vertical cooling path, 11, 28: Internal vertical cooling path, 10: Horizontal cooling path, 17: Spacing piece, 18: Horizontal spacer, 19: Notch, 22A, 22B: Insulating ring,
20, 21, 22, 24, 25, 26, 27, 29, 3
2: Flow section

Claims (8)

[Claims] 1. A disk winding having a single or a plurality of internal vertical cooling passages in the middle in the radial direction is stacked vertically in a plurality of stages via a horizontal cooling passage, and the inner side and the outer side of the disk winding are stacked. An insulating inner cylinder and an outer cylinder are arranged on the radial side and the inner vertical cooling path and the outer vertical cooling path, respectively, and a cooling medium flows into the vertical cooling path from the lower part of the disk winding, In an induction device in which a flow portion for forcibly turning the flow direction of the cooling medium in the horizontal cooling path in the opposite direction is provided for each predetermined number of laminations of the disk winding, an insulating partition cylinder is provided inside the induction device. Of the vertical cooling passage is divided into two in the radial direction, between the inner cylinder and the partition cylinder, between the outer cylinder and the partition cylinder, and when there are multiple internal vertical cooling passages, the partition cylinders Between each winding part is provided for every predetermined number of laminations of the disk winding Induction apparatus which is characterized by comprising. 2. The induction machine according to claim 1, wherein the bent portion is an insulating plate protruding from an inner cylinder, an outer cylinder or a partition cylinder and extending along a horizontal cooling path. Electrical appliances. 3. The induction electric machine according to claim 1, wherein the bent portion is an insulating ring that fills a space between the inner cylinder, the outer cylinder, or the partition cylinder and the disk winding at the position where the bent portion is formed. An induction electric appliance, characterized in that: 4. The induction electric machine according to claim 1, wherein the disk winding at a position forming the turning portion is wound until it comes into close contact with the inner or outer diameter surface of the partitioning cylinder. An induction electric device comprising a plate winding itself. 5. The induction machine according to claim 1, wherein the partitioning cylinder is formed by vertically stacking a plurality of insulating cylindrical portions divided for each lamination of the disk winding. An induction electric appliance, wherein insulating spacers are joined to the inner diameter surface and the outer diameter surface of each cylindrical portion in order to maintain the interval between the internal vertical cooling passages. 6. The induction electric machine according to claim 3, wherein the partitioning cylinder is formed by vertically stacking a plurality of cylindrical portions divided for each lamination of the disk windings, thereby forming a bent portion. An induction electric machine characterized in that insulating rings for maintaining an interval between the internal vertical cooling passages are respectively joined to both side surfaces of the cylindrical portion at each location. 7. The induction electric machine according to claim 3, wherein the partitioning cylinder is formed by vertically stacking a plurality of cylindrical portions divided for each lamination of the disc windings, thereby forming a bent portion. An insulating ring for maintaining the interval between the internal vertical cooling passages is joined to one side of the cylindrical portion, and a spacing piece for maintaining the interval between the internal vertical cooling passages is joined to the other side. Induction machine. 8. The induction device according to claim 5, wherein a notch through which the horizontal spacer penetrates is formed in the cylindrical portion to maintain an interval between the horizontal cooling paths of the disk winding. And induction electrical equipment.