JPH11317313A - Static guide equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact static guide equipment for making uniform the temperature of a whole coil by satisfactorily cooling the whole coil. SOLUTION: A horizontal cooling path 5 is formed of horizontal interval pieces 4 between two adjacent disc coils 3 which are arranged between inside and outside insulating cylinders 1 and 2, and the horizontal cooling path 5 and a vertical cooling path are formed of the interval pieces 4 between the inside and outside insulating cylinders 1 and 2 and the disc coils 3 in this static guiding equipment. In this case, a second inside insulating cylinder 12 is arranged inside the inside insulating cylinder 1, and a second outside insulating cylinder 16 is arranged outside the outside insulting cylinder 2, and this equipment is divided into a first area constituted of the upper several sections of disc coils 3 and a second area constituted of the lower disc coils 3 by a partition panel provided across the inside insulating cylinder 1 and the outside insulating cylinder 2, and the first area is connected with the insulating layer 13 and insulating fluid can be supplied to the upper several sections of disc coils 3. Thus, the insulating fluid, whose temperature is low which is not brought into contact with a heating body, can be supplied to the upper several sections, and the entire coil can be cooled satisfactorily.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to a stationary induction apparatus which the insulating fluid such as SF ₆ gas or transformer oil, and coolant.

[0002]

2. Description of the Related Art Windings used for stationary induction devices such as transformers and reactors generate a large amount of heat due to their loss during operation. Therefore, a cooling path is generally formed around the winding, and cooling is performed by flowing an insulating fluid such as SF ₆ gas or insulating oil through the cooling path. A conventional transformer winding having the above-described cooling structure will be described with reference to FIG. 8 (horizontal sectional view of the winding) and FIG. 9 (XX sectional view of FIG. 8).

[0003] As shown in the figure, two types of windings, namely an inner winding and an outer winding, are formed by winding a conductor between an inner insulating tube 1 and an outer insulating tube 2 which are coaxially arranged. Are disposed coaxially. In each winding,
A plurality of horizontal spacing pieces 4 are radially arranged at equal intervals between two disk windings 3 adjacent to each other in the stacking direction. The cooling path 5 is formed radially. Further, between the inner insulating tube 1 and the disk winding 3, and between the outer insulating tube 2 and the disk winding 3, a plurality of inner vertical spacing pieces 7 correspond to the horizontal spacing pieces 4. It is arranged on the inner and outer circumferences. Thus, a plurality of linear inner cooling passages 8 and outer cooling passages 9 extending in the axial direction of the disc winding 3 are provided inside and outside the disc winding 3.
Are formed respectively.

Further, the inner vertical cooling passage 8 is closed and the inner closing plate 10 and the outer vertical cooling passage 9 extending from the inner vertical cooling passage 8 to the horizontal cooling passage 5 are provided every several stages of the disk winding 3. Outer closing plates 11 which are closed and extend from the outer vertical cooling passages 9 to the horizontal cooling passages 5 are provided alternately and over the entire circumference of the disk winding 3. In this manner, the positions of the inlet and outlet of the insulating fluid in the horizontal cooling passage 5 are reversed by alternately arranging the inner closing plates 10 and the outer closing plates 11 for each of several steps of the disk winding 3, It is configured to reverse the flow direction. The insulating fluid flows between the disk windings 3 in a zigzag manner between the inner insulating tube 1 and the outer insulating tube 2 from the lower end to the upper end of the winding, thereby cooling the entire winding. Furthermore, the outer insulating cylinder 2 of the inner winding
A plurality of insulating tubes and the like are arranged between the inner winding tube 1 of the outer winding and the inner insulating tube 1 together with the vertical spacing pieces, and are spaces for storing the insulating fluid.

[0005]

However, the conventional transformer winding having the above configuration has the following problems. That is, in a general disk winding formed by winding a conductor, the loss in the upper end and lower end sections is larger than in other sections. Therefore, the calorific value is large,
An excessive temperature rise is likely to occur locally. Excessive temperature rise causes problems such as deterioration of the insulator.

In order to solve such a problem, a technique disclosed in Japanese Patent Application Laid-Open No. 61-150309 has been proposed. Although this technique contributes to lowering the temperature of the end section and the average temperature of the winding, there is a problem that the oil flow cannot be controlled because the insulating oil always flows under the same conditions in the upper and lower sections.

The present invention (corresponding to claim 1 to claim 6)
The purpose of the present invention is to solve the above problem. The purpose is to locally improve the cooling efficiency of a part where an excessive temperature rise is likely to occur, so that the entire winding can be cooled well and the entire winding can be cooled. Temperature can be made uniform, and
An object of the present invention is to provide a small stationary induction device in which the oil flow is easily controlled by having independent oil entrances in the upper and lower sections.

[0008]

In order to achieve the above object, a first aspect of the present invention is to stack a plurality of disk windings each formed by winding a conductor between an inner insulating tube and an outer insulating tube. Arranged, a plurality of horizontal cooling passages are radially formed by interposing a plurality of horizontal spacing pieces between each two adjacent disk windings in the stacking direction, and the inner insulating cylinder and the disk windings Stationary induction having a plurality of inner and outer vertical cooling passages communicating with the plurality of horizontal cooling passages with a plurality of vertical spacing pieces interposed therebetween and between the outer insulating cylinder and the disc winding, respectively. In the device, at least one of the second inner insulating cylinder or the second outer insulating cylinder is further arranged outside the inner insulating cylinder or further outside the outer insulating cylinder to form an insulating layer through which an insulating fluid flows, Over the entire circumference of the disk winding, By a partition plate provided from the insulating tube to the outer insulating tube, a first region composed of one or several sections of a disk winding and a second region composed of a disk winding below the first region are separated, and The first region and the insulating layer are connected to each other, and an insulating fluid is supplied to the upper one section or several sections of the disk winding through the insulating layer.

According to the first aspect of the present invention, the insulating fluid that has risen from the insulating layer is caused to flow through the upper one section or the upper several sections of the disk winding, so that the heating element is applied to the upper one section or the upper several sections. A low-temperature insulating fluid that is not in contact can be supplied.

According to a second aspect of the present invention, a plurality of disk windings formed by winding conductors are stacked and arranged between an inner insulating tube and an outer insulating tube, and two adjacent disk windings are arranged in the laminating direction. A plurality of horizontal cooling passages are radially formed by interposing a plurality of horizontal spacing pieces between the wires, and a space between the inner insulating cylinder and the disc winding and between the outer insulating cylinder and the disc winding. In the stationary induction device, there are two or more sets of concentrically formed windings each forming a plurality of inner and outer vertical cooling passages communicating the plurality of horizontal cooling passages with a plurality of vertical spacing pieces interposed therebetween. A plurality of insulating cylinders are arranged between two sets of windings, and two insulating layers through which insulating fluid flows are formed between the two insulating cylinders. Both over the entire circumference of the disk winding, from the inner insulating cylinder to the outer insulating cylinder The partition provided over the first region separates the first region having one or several sections of the disk winding from the first region and the second region having the lower part of the disk winding, and separates the first region from the first region. And the upper layer of the two sets of windings through the insulating layer.
It is characterized in that the insulating fluid is supplied to each of the section or several sections of the disk winding.

According to the second aspect of the present invention, by flowing the insulating fluid that has risen up the insulating layer for each winding,
A low temperature insulating fluid that is not in contact with the heating element can be supplied to the upper section or several sections of each winding.

According to a third aspect of the present invention, in the stationary induction machine according to the first or second aspect, the partition plate extends over the entire circumference of the disk winding and has a vertical cooling path on the inflow side of the insulating layer. Is closed to extend from the vertical cooling passage to the horizontal cooling passage, and the vertical cooling passage on the outflow side joins the insulating fluid flowing out of the insulating layer and the insulating fluid rising from the lower portion of the winding to form an upper portion. It is characterized by having a structure to discharge to

According to the third aspect of the present invention, an insulating fluid having a low temperature which is not in contact with the heating element is supplied to the upper section or several upper sections by flowing the insulating fluid which has risen in the insulating layer. The number of parts can be reduced by using a conventional closing plate for the partition plate.

According to a fourth aspect of the present invention, in the stationary induction machine according to the second aspect, an insulating fluid is provided between two central insulating cylinders among a plurality of insulating cylinders installed between the two sets of windings. An ascending first insulating layer; a second insulating layer sandwiched between other insulating cylinders on inner and outer peripheral sides of the first insulating layer;
A third insulating layer sandwiched between other insulating cylinders is formed on the inner and outer sides of the insulating layer, and the second and third insulating layers are formed on the first and second insulating layers. At the lower part, a gap or a hole is formed in a corresponding insulating cylinder so that the third insulating layer and the first region composed of the upper one section or several sections of the disc winding formed by the partition plate pass through the upper part. And an insulating fluid flows in a zigzag manner up and down the first insulating layer to the third insulating layer,
It is characterized in that the insulating fluid is supplied to each of the upper one section or several sections of the two sets of windings.

According to the fourth aspect of the present invention, an insulating fluid having a low temperature which is not in contact with the heating element is supplied to one or more upper sections by flowing the insulating fluid which has risen in the insulating layer. it can. Also, the number of inlets for the insulating fluid supplied to the upper section can be reduced to one (minimum).

According to a fifth aspect of the present invention, in the stationary induction machine according to the first to third aspects, a gap is provided near a radial center of the upper end 2 section and the lower end 2 section of the disk winding. It is characterized by having been provided.

According to the fifth aspect of the present invention, since a gap is provided in the center of the disk winding at the upper and lower ends where an excessive temperature rise is likely to occur, the cooling area of this portion can be increased. it can. Therefore, the cooling efficiency is improved, and the maximum temperature of the winding can be effectively reduced.

According to a sixth aspect of the present invention, there is provided the stationary induction device according to the fifth aspect, wherein the gap provided in the disk winding is
A control plate for adjusting the flow rate of the insulating fluid is provided downstream of the gap in the second section from the upper end.

According to the sixth aspect of the present invention, since a gap is provided at the center of the disk winding at the upper and lower ends where an excessive temperature rise is likely to occur, the cooling area of this portion can be increased. By providing the control plate on the downstream side of the flow of the insulating fluid in the gap, a large amount of the insulating fluid can flow into the gap in the upper end section. Therefore, the cooling efficiency is improved, and the maximum temperature of the winding can be effectively reduced.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a horizontal sectional view of a first embodiment (corresponding to claims 1 to 3) of the present invention, and FIG. 2 (corresponding to claim 1) is a sectional view taken along line XX of FIG.

As shown in FIGS. 1 and 2, a disk winding 3 formed by winding a conductor is coaxially arranged between an inner insulating tube 1 and an outer insulating tube 2 arranged coaxially. Have been. The disk windings 3 are stacked in a plurality of stages in the axial direction of the insulating cylinder. A plurality of horizontal spacing pieces 4 are radially arranged at equal intervals between each two adjacent disk windings 3, thereby forming a plurality of fan-shaped horizontal sections in the radial direction of the disk winding 3. The cooling path 5 is formed radially. Also the inner insulating tube 1
Between the outer winding 2 and the disk winding 3 and between the outer insulating cylinder 2 and the disk winding 3
A plurality of inner vertical spacing pieces 6 and a plurality of outer vertical spacing pieces 7 are respectively disposed on the inner and outer circumferences of the portion where the horizontal spacing pieces 4 of the disk winding 3 are disposed. Accordingly, a plurality of linear inner vertical cooling passages 8 and outer vertical cooling passages 9 extending in the axial direction of the plurality of disk windings 3 are formed inside and outside the disk winding 3, respectively. That is, each of the plurality of inner vertical cooling passages 8 and the plurality of outer vertical cooling passages 9 is formed so as to individually communicate with each of the plurality of horizontal cooling passages 5.

Further, a second inner insulating tube 12 is disposed further inside the inner insulating tube 1 so that the insulating layer 1 through which the insulating fluid flows can be used.
3 and a partition plate 14 provided over the entire circumference of the disk winding 3 and from the inner insulating tube 1 to the outer insulating tube 2 to form a region composed of the upper one section of the disk winding 3. The structure is divided into a region composed of the lower disk winding 3 and connected to a region composed of the upper one section disk winding 3 and the insulating layer 13 through which the insulating fluid flows. Further, an outlet for the insulating fluid is provided in the outer insulating cylinder 2 located below the partition plate 14.

The operation of this embodiment having the above configuration is as follows. A part of the insulating fluid rises while cooling the inside of the winding as before, is prevented from rising by the partition plate 14, and is discharged to the outside. A part of the insulating fluid rises through the insulating layer 13. The rising insulating fluid changes its flowing direction by the oil stopper 15, and is discharged to the outside while cooling the upper one section. Therefore, the upper end section that generates a large amount of heat can be cooled by the low-temperature insulating fluid that is not in contact with the heating element. As described above, according to the present embodiment, it is possible to prevent local excessive temperature rise in the upper end coil section, which has been a problem in the related art. Further, in the present embodiment, the insulating layer is provided inside the outer winding, but the same effect as in the present embodiment can be obtained by providing the insulating layer outside the outer winding. This is equally applicable for the inner winding.

FIG. 3 (corresponding to claim 2) is a sectional view taken along the line Y--Y of FIG. 1, which is a first embodiment of the present invention. The arranged disk winding 3
Are applied concentrically to two sets (inner winding and outer winding).

As shown in the drawing, a plurality of insulating cylinders are arranged between the inner winding and the outer winding, of which an inner insulating cylinder 1 of the outer winding and a second inner insulating cylinder arranged further inside. Cylinder 12
An insulating layer 13 and an insulating layer 17 are respectively formed on the outer insulating cylinder 2 of the inner winding and the second outer insulating cylinder 16 disposed further outside, and a disk is formed on each of the inner winding and the outer winding. Inner insulating tube 1 over the entire circumference of winding 3
From the region consisting of the upper one or two sections of the disk winding 3 and the area consisting of the lower part of the disk winding 3 by a partition plate 14 provided over the outer insulating cylinder 2. Connecting the region consisting of the upper two sections of the disk windings 3 with the insulating layer 13 through which the insulating fluid flows, and connecting the region consisting of the upper one section of the disk windings 3 with the upper one section with the insulating layer 17 through which the insulating fluid flows, Each has a communication structure. An insulating fluid outlet is provided in each of the outer insulating cylinder 2 of the outer winding and the inner insulating cylinder 1 of the inner winding located below the partition plate 14.

The operation of this embodiment having the above configuration is as follows. Each of the inner winding and the outer winding rises while a part of the insulating fluid cools the inside of the winding as before, is prevented from rising by the partition plate 14, and is discharged to the outside. In addition, a part of the insulating fluid rises through the insulating layers 13 and 17. The rising insulating fluid changes its flowing direction by the oil stopper 15, and is discharged to the outside while cooling the upper one or two sections of the inner winding and the outer winding, respectively. The upper end section that generates a large amount of heat can be cooled by a low-temperature insulating fluid that is not in contact with the heating element. Thus, according to the present embodiment,
It is possible to prevent a local excessive temperature rise, which has conventionally been a problem.

FIG. 4 (corresponding to claim 3) is a sectional view taken along the line Z--Z in FIG. 1, which is the first embodiment of the present invention. As shown in the figure,
In this embodiment, the partition plate 14 a of the inner winding extends over the entire circumference of the disk winding 3, and the vertical cooling passage 9 on the inflow side from the insulating layer 17.
And extends from the vertical cooling passage 9 to the horizontal cooling passage 5. In the vertical cooling passage 8 on the outflow side, the insulating fluid flowing from the insulating layer 17 and the insulating fluid rising from the lower part of the winding are removed. It has a structure to join.

The operation of this embodiment having the above configuration is as follows. Some of the insulating fluid rises through the insulating layer 17. The insulating fluid that has risen in the insulating layer 17 changes its direction of flow by the oil stopper 15, merges with the insulating fluid that has risen while cooling the inside of the winding as before, while cooling the upper section, and is discharged to the outside. . The upper end section that generates a large amount of heat can be cooled by a low-temperature insulating fluid that is not in contact with the heating element. Further, since a conventional closing plate can be used as the partition plate 14a,
It is not necessary to increase the number of parts.

FIG. 5 shows a second embodiment (corresponding to claim 4) of the present invention, and is a cross-sectional view corresponding to the YY cross-sectional view of FIG. As shown in the drawing, the present embodiment has a first insulating structure in which an insulating fluid rises between two central insulating tubes among a plurality of insulating tubes installed between the windings of the inner winding and the outer winding. Layer 18
Are formed on the inner and outer peripheral sides of the first insulating layer 18,
A second insulating layer 19 sandwiched between other insulating cylinders is formed.
Further, an insulating layer 13 is provided between the inner insulating cylinder 1 of the outer winding and the second inner insulating cylinder 12 disposed inside the outer insulating cylinder 1, and the outer insulating cylinder 2 of the inner winding is disposed between the inner insulating cylinder 2 and the second insulating cylinder 12. An insulating layer 17 is formed between each of the outer insulating tubes 16. The first insulating layer 18 and the second insulating layer 19 are on the upper part, the second insulating layer 19, the insulating layer 13 and the insulating layer 17 are on the lower part, and the insulating layer 1 is
3. A structure in which a gap or a hole is provided in a corresponding insulating cylinder so that an upper portion thereof passes through a region formed by the insulating layer 17 and the upper and lower sections 1 and 2 of the disk winding 3 formed by the partition plate 14, respectively. ing.

The operation of this embodiment having the above configuration is as follows. A part of the insulating fluid rises while cooling the inside of the winding as before, is prevented from rising by the partition plate 14, and is discharged to the outside. Some of the insulating fluid
The first insulating layer 18 is raised, the direction is changed by the oil stopper 15, and the second insulating layer 19 is lowered. The lowered insulating fluid is redirected again by the lower oil stopper 15a, and rises in the insulating layers 13 and 17, respectively. The rising insulating fluid changes its flowing direction again by the oil stopper 15, and is discharged to the outside while cooling the upper one section of the inner winding and the outer winding, respectively. In other words, the insulating fluid flows in a zigzag manner up and down the first to third insulating layers, and the insulating fluid is supplied to the disk windings of the upper one section of the two sets of windings, respectively. It is discharged to the outside while cooling the plate winding 3. Therefore, the upper heat-generating upper section can be cooled by the low-temperature insulating fluid that is not in contact with the heating element. Also, the number of inlets for the insulating fluid supplied to the upper section can be reduced to one (minimum).

FIG. 6 shows a third embodiment (corresponding to claim 5) of the present invention, and is a sectional view corresponding to the sectional view taken along line XX of FIG. As shown in FIG.
The section has a structure in which a gap 20 is provided at the center in the radial direction.

The operation of this embodiment having the above configuration is as follows. The insulating fluid, which has risen while cooling the inside of the winding as before, is prevented from rising by the partition plate 14 and is discharged to the outside. In addition, a part of the insulating fluid is applied to the insulating layer 1.
3 rises and changes the direction of flow by the oil stopper 15 and is discharged outside while cooling the upper one section. Here, a large heat is generated in the radially central portions of the upper and lower two sections, and a gap 20 is provided in the vicinity thereof. By increasing the cooling area, the winding temperature can be effectively lowered.

FIG. 7 shows a fourth embodiment (corresponding to claim 6) of the present invention, and is a sectional view corresponding to the sectional view taken along line XX of FIG. As shown in the figure, in the present embodiment, the upper two sections of the disk winding and the section below it are separated by a partition plate 14, and the flow rate of the insulating fluid is adjusted downstream of the gap 20 in the second section from the top. Is provided with a control plate 21 for use.

The operation of this embodiment having the above configuration is as follows. The insulating fluid that has risen through the insulating layer 13 changes its flowing direction by the oil stopper 15, and is discharged to the outside while cooling the horizontal, vertical, and central gaps of the upper two sections. At this time, the insulating fluid flowing between the upper section 1 and the upper section 2 is supplied to the control plate 2 provided on the downstream side.
Due to 1, a part thereof is forcibly bent into the central gap of the upper end section, and is discharged outside while cooling the place. The cooling area at the center in the radial direction of the upper and lower two sections generating a large amount of heat is increased, and the insulating fluid can easily flow to the center of the upper section, in particular, where the temperature of the insulating fluid tends to be high.

[0035]

As described above, the present invention (Claim 1)
According to claim 6), an excessive temperature rise is caused by sending a low-temperature insulating fluid to the upper end section and several upper end sections and providing a gap between the conductors in the disk winding of the upper and lower two sections. It is possible to locally improve the cooling efficiency of a portion where the occurrence of the heat is easily caused. Therefore, it is possible to provide a small stationary induction device excellent in cooling efficiency and capable of satisfactorily cooling the entire winding and making the temperature of the entire winding uniform.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a sectional view taken along line YY of FIG. 1;

FIG. 4 is a sectional view taken along the line ZZ in FIG. 1;

FIG. 5 is a cross-sectional view corresponding to a YY cross-sectional view of FIG. 1 according to a second embodiment of the present invention.

FIG. 6 is a sectional view corresponding to a sectional view taken along line XX of FIG. 1 according to a third embodiment of the present invention.

FIG. 7 is a sectional view corresponding to a sectional view taken along line XX of FIG. 1 according to a fourth embodiment of the present invention.

FIG. 8 is a horizontal sectional view of a winding of a conventional transformer.

FIG. 9 is a sectional view taken along line XX of FIG. 8;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Insulated cylinder, 2 ... Insulated cylinder, 3 ... Disc winding, 4 ...
Horizontal spacing piece, 5 ... Horizontal cooling path, 6 ... Inside vertical spacing piece, 7
... Outer vertical spacing piece, 8 ... Inner vertical cooling path, 9 ... Outer vertical cooling path, 10 ... Inner closing plate, 11 ... Outer closing plate, 12 ...
Second inner insulating cylinder, 13: insulating layer, 14: partition plate, 14
a: partition plate, 15: oil stopper, 15a: oil stopper (lower part),
16: a second outer insulating cylinder, 17: an insulating layer, 18: a first insulating layer, 19: a second insulating layer, 20: a gap, 21: a control plate for flow adjustment, 22: a winding presser plate.

Claims (6)

[Claims] A plurality of disk windings each formed by winding a conductor between an inner insulating cylinder and an outer insulating cylinder are stacked and arranged, and a plurality of horizontal windings are arranged between each two adjacent disk windings in the laminating direction. A plurality of horizontal cooling passages are radially formed with a spacing piece interposed, and a plurality of vertical spacings are provided between the inner insulating cylinder and the disc winding and between the outer insulating cylinder and the disc winding. In a stationary induction device in which a plurality of inner and outer vertical cooling passages communicating with the plurality of horizontal cooling passages are formed with respective pieces interposed therebetween, a second inner insulating tube or the outer insulating tube is further provided inside the inner insulating tube. At least one of the second outer insulating cylinders is arranged further outside the cylinder to form an insulating layer through which an insulating fluid flows, and over the entire circumference of the disk winding, from the inner insulating cylinder to the outer insulating cylinder. By the provided partition plate, A first region consisting of one or several sections of a disk winding and a second region consisting of a disk winding below the first region are separated, and the first region is connected to the insulating layer. A stationary induction machine characterized in that an insulating fluid is supplied to the upper one section or several sections of the disk winding through a layer. 2. A plurality of disk windings each formed by winding a conductor between an inner insulating cylinder and an outer insulating cylinder are stacked and arranged, and a plurality of horizontal windings are provided between each two adjacent disk windings in the laminating direction. A plurality of horizontal cooling passages are radially formed with a spacing piece interposed, and a plurality of vertical spacings are provided between the inner insulating cylinder and the disc winding and between the outer insulating cylinder and the disc winding. In a stationary induction machine in which two or more sets of windings are formed concentrically with a plurality of inner and outer vertical cooling paths each communicating a plurality of the horizontal cooling paths with a piece interposed therebetween, two or more of the windings A plurality of insulating cylinders are arranged between a pair of windings, two insulating layers through which an insulating fluid flows are formed between two of the insulating cylinders, and both of the two sets of windings are the disk windings. Over the entire circumference, provided from the inner insulating cylinder to the outer insulating cylinder. The partition plate separates a first region consisting of one or several sections of disk windings from a first region and a second region consisting of disk windings below the first region, and connects the first region and the insulating layer, respectively. A stationary induction machine characterized in that an insulating fluid is supplied to the upper one section or several sections of the disk windings of the two sets of windings through the insulating layer. 3. The stationary induction machine according to claim 1, wherein the partition plate closes a vertical cooling passage on an inflow side of the insulating layer over the entire circumference of the disk winding. The structure extends from the cooling path to the horizontal cooling path, and the vertical cooling path on the outflow side has a structure in which the insulating fluid flowing out of the insulating layer and the insulating fluid rising from the lower part of the winding are combined and discharged to the upper part. A stationary induction device characterized by the above-mentioned. 4. The stationary guidance device according to claim 2,
Of a plurality of insulating cylinders installed between the two sets of windings, a first insulating layer in which an insulating fluid rises between two central insulating cylinders, and an inner circumferential side and an outer circumferential side of the first insulating layer. A second insulating layer sandwiched between the other insulating cylinders, and a third insulating layer sandwiched between the other insulating cylinders inside and on the outer peripheral side of the second insulating layer, respectively, and the first and the second layers are formed. A first region comprising an upper one section or several sections of a disc winding formed by the second insulating layer and the second insulating layer, and the second insulating layer and the third insulating layer below the third insulating layer and the partition plate; A gap or a hole is provided in the corresponding insulating cylinder so that the upper part of the two sets of windings passes through the first insulating layer or the third insulating layer in a zigzag manner. An insulating fluid is supplied to one or several sections of the disk winding. Stationary induction apparatus which is characterized by being configured to be. 5. The stationary induction machine according to claim 1, wherein a gap is provided near a radial center of the upper end 2 section and the lower end 2 section of the disk winding. Stationary induction equipment. 6. The stationary induction device according to claim 5, wherein
A stationary induction machine characterized in that a control plate for adjusting a flow rate of an insulating fluid is provided downstream of a gap in a second section from an upper end among gaps provided in the disk winding.