JP2000077236A - Stationary guidance equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve cooling at a part, where overheating is easily generated in a conventional manner, and to uniformize the temperature of a coil as a whole by uniformizing the flow of an insulating fluid, or thermal diffusing at a nonuniform flowing part. SOLUTION: Inside closing boards 11 for closing an inside vertical cooling path 9 and outside closing boards 12 for closing an outside vertical cooling path 10 are alternately provided, so that the upper and lower positions can be made different at each plural stages of disc coils 4 which are laminated between a vertical inside insulating cylinder and an outside insulating cylinder arranged at the outer peripheral side. Thus, plural insulating fluid channel areas 19 and 20 for insulating fluid passage constituted of horizontal cooling paths 6, inside the vertical cooling path 9 and the outside vertical cooling path 10 are arranged adjacent in the peripheral direction. The height positions of the inside closing board 11 and the outside closing board 12 which forms each insulating fluid channel area is made different for each of one or more insulating fluid channel areas 19 and 20 and arranged adjacent in the peripheral direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to a stationary induction apparatus for cooling the disc winding insulation fluid such as SF ₆ gas or transformer oil as the cooling medium, and more particularly to an improvement of the cooling structure.

[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, generally, a cooling path is formed around the winding, and an insulating fluid such as SF ₆ gas or insulating oil flows through the cooling path, and the cooling is performed using the cooling fluid as a cooling medium. Hereinafter, the details of a conventional stationary induction device will be described with reference to FIGS. 15 to 17 taking a transformer having such a cooling structure as an example.

FIG. 15 is a horizontal sectional view showing a winding of a transformer, FIG. 16 is a perspective view of the same, and FIG.
It is an X-ray sectional view.

[0004] The transformer winding 1 shown in these figures has an outer winding 1A and an inner winding 1B arranged concentrically, and these have similar structures. In addition,
In the following description, the outer winding 1A will be described as a representative, but the configuration of the inner winding 1B is also substantially the same, and the same components will be denoted by the same reference numerals and description thereof will be omitted. The outer winding 1A has an outer insulating tube 3 arranged on the outer peripheral side of a vertically long inner insulating tube 2, and a plurality of disk windings 4 formed by winding conductors are stacked between the outer insulating tubes 3 to form a coaxial shape. The configuration is arranged. A plurality of horizontal spacing pieces 5 extending in the radial direction are radially arranged between the adjacent disk windings 4 in the laminating direction, so that the horizontal spacing pieces 5 face the radial direction of the disk windings 4. Thus, a plurality of fan-shaped horizontal cooling passages 6 are formed radially. Further, between the inner insulating tube 2 and the disk winding 4 and between the outer insulating tube 3 and the disk winding 4, a plurality of inner vertical spacing pieces 7 and a plurality of outer vertical spacing pieces 8, respectively, are provided. , Extending in the vertical direction at the inner and outer peripheral edges of the disk winding 4 in an arrangement corresponding to both ends of the horizontal spacing piece 5. Thus, a plurality of inner cooling passages 9 and outer cooling passages 10 are formed on the inner peripheral side and the outer peripheral side of the disk winding 4, respectively, along the axial direction of the disk winding 4, that is, in the vertical direction.

[0005] As shown in FIGS. 16 and 17, the inner vertical cooling passage 9 is closed for each of a plurality of stages of the disk windings 4 and extends from the inner vertical cooling passage 9 side to the horizontal cooling passage 6 side. The inner winding plate 11 extending from the outer winding 12 and the outer closing plate 12 closing the outer vertical cooling passage 10 and extending from the outer vertical cooling passage 10 to the horizontal cooling passage 6 are alternately formed.
Is provided over the entire circumference of Thus, by alternately arranging the inner closing plates 11 and the outer closing plates 12 at different heights for each of a plurality of stages of the disk winding 4, the inlet and outlet of the insulating fluid a in the horizontal cooling passage 6 are provided. Is reversed on the inner and outer peripheral sides of the disk winding 4 so that the flow direction in the horizontal cooling path 6 is reversed. Then, while the insulating fluid a flows from the lower end to the upper end of the winding, it flows between the disk windings 4 in a zigzag manner between the inner insulating tube 2 and the outer insulating tube 3 to cool the entire winding. Will do. Note that FIG.
As shown in the figure, the upper and lower ends of the disk winding 4 are
Pressed and held by 3,14.

[0006] As shown in FIG.
The second inner insulating tube 1 is further provided on the inner peripheral side of the inner insulating tube 2.
In the inner winding 1B, a second outer insulating cylinder 16 is further provided on the outer peripheral side of the outer insulating cylinder 3, and a space formed by each of the insulating cylinders 15 and 16 stores an insulating fluid. The inner insulating layer 17 and the outer insulating layer 18 are provided. The inner insulating layer 17 and the outer insulating layer 18 are provided with the second inner vertical spacing piece 7 and the second outer spacing piece located at the same positions as the inner vertical spacing piece 7 and the outer vertical spacing piece 8 described above. 8a, each cooling path 9, 1
It is divided in the circumferential direction corresponding to 0. In the present specification, each area partitioned in the circumferential direction, including the cooling paths 9 and 10 and the insulating layers 17 and 18 thus divided, is hereinafter referred to as an insulating fluid flow path area.

[0007]

In the conventional static induction device such as a transformer having the above-mentioned configuration, there is a possibility that an excessive temperature rise locally occurs due to a cooling path structure.

That is, with respect to the disk winding 4 having a general configuration in which a conductor is wound, the insulating fluid a is caused to flow in a zigzag manner from the lower side to the upper side using the inner closing plate 11 and the outer closing plate 12. 17, the flow rate of the insulating fluid a in each horizontal cooling passage 6 is lower than that of the closing plates 11 and 12 as shown by the length of the arrow in FIG. An uneven distribution is likely to occur, which is fast because it is guided in the same direction, and slow because it is diverted upward and horizontally above the closing plates 11 and 12. For this reason, a place where the flow of the insulating fluid a stagnates occurs above the closing plates 11 and 12, and an excessive temperature rise easily occurs locally. Such an excessive rise in temperature may cause problems such as deterioration of the insulator.

The present invention has been made in view of such circumstances, and has as its object to make the flow of an insulating fluid uniform or to thermally disperse an uneven flow portion. It is an object of the present invention to provide a stationary induction device that can enhance the cooling performance of a portion where an excessive temperature rise is likely to occur in the related art, thereby making the temperature of the entire winding uniform.

[0010]

In order to achieve the above object, according to the first aspect of the present invention, a conductor is wound between a vertically long inner insulating tube and an outer insulating tube disposed on the outer peripheral side thereof. A plurality of disk windings are vertically stacked and disposed, and a plurality of horizontal spacing pieces extending along the radial direction between the stacked disk windings are circumferentially spaced. To form a plurality of radial horizontal cooling paths between the disk windings, and at both ends of the horizontal spacing piece between the inner insulating cylinder and the disk winding and the outer insulation. A plurality of vertical spacing pieces extending in the vertical direction between the cylinder and the disc winding are interposed, and the horizontal cooling passages are vertically arranged on the inner peripheral side and the outer peripheral side of the disc winding. Forming a plurality of inner vertical cooling passages and outer vertical passages communicating with each other along the circle, For each of a plurality stages of winding, arranged alternately and an outer closing plate at different vertical positions for closing an inner closing plate for closing the inner vertical cooling passage the outer vertical cooling path,
Thereby, in a stationary induction device in which a plurality of insulating fluid flow paths including the horizontal cooling path, the inner vertical cooling path, and the outer vertical cooling path are arranged adjacently in the circumferential direction, one or two circumferentially adjacent ones or two are arranged. There is provided a static induction device characterized in that the height positions of the inner closing plate and the outer closing plate forming the respective insulating fluid passage regions are different for each of the above-described insulating fluid passage regions. .

According to the second aspect of the present invention, a plurality of disk windings each formed by winding a conductor are vertically stacked between a vertically elongated inner insulating cylinder and an outer insulating cylinder disposed on the outer peripheral side thereof. And a plurality of horizontal spacing pieces extending along the radial direction between the stacked disk windings are interposed at intervals in the circumferential direction, so that a plurality of Form a radial horizontal cooling path, and along the vertical direction between the inner insulating cylinder and the disk winding and between the outer insulating cylinder and the disk winding at both ends of the horizontal spacing piece A plurality of inner vertical cooling passages and an outer vertical flow which respectively communicate the horizontal cooling passages vertically along the inner and outer peripheral sides of the disk winding by interposing a plurality of vertical spacing pieces extending in the vertical direction. A passage is formed, and the inner vertical cooling passage is closed at each of a plurality of stages of the disk winding. The inner closing plate and the outer closing plate closing the outer vertical cooling passage are alternately provided at different vertical positions, thereby providing an insulating fluid flow comprising the horizontal cooling passage, the inner vertical cooling passage, and the outer vertical cooling passage. In a stationary induction device in which a plurality of insulating fluid flow paths are arranged adjacent to each other in the circumferential direction, a second inner insulating cylinder or Second
By providing the outer insulating cylinder of the above, while forming an annular space through which the insulating fluid can flow vertically, the second inner side arranged at the same circumferential position as the inner vertical spacing piece or the outer vertical spacing piece A plurality of inner insulating layers or outer insulating layers radially adjacent to the inner vertical cooling passage or the outer vertical cooling passage are formed in a circumferential direction by a vertical spacing piece or a second outer vertical spacing piece, and these are formed. The upper or lower part of the inner insulating layer or the outer insulating layer is communicated with the inner vertical cooling path or the outer vertical cooling path for each of one or more insulating fluid flow paths, and the inner insulating layer or the The stationary induction device is characterized in that the insulating fluid flows upside down in the inner vertical cooling passage or the outer vertical cooling passage in the outer insulating layer.

According to the third aspect of the present invention, a plurality of disc windings each formed by winding a conductor are vertically stacked between a vertically elongated inner insulating cylinder and an outer insulating cylinder disposed on the outer peripheral side thereof. And a plurality of horizontal spacing pieces extending along the radial direction between the stacked disk windings are interposed at intervals in the circumferential direction, so that a plurality of Form a radial horizontal cooling path, and along the vertical direction between the inner insulating cylinder and the disk winding and between the outer insulating cylinder and the disk winding at both ends of the horizontal spacing piece A plurality of inner vertical cooling passages and an outer vertical flow which respectively communicate the horizontal cooling passages vertically along the inner and outer peripheral sides of the disk winding by interposing a plurality of vertical spacing pieces extending in the vertical direction. A passage is formed, and the inner vertical cooling passage is closed at each of a plurality of stages of the disk winding. The inner closing plate and the outer closing plate closing the outer vertical cooling passage are alternately provided at different vertical positions, thereby providing an insulating fluid flow comprising the horizontal cooling passage, the inner vertical cooling passage, and the outer vertical cooling passage. In the stationary induction device in which a plurality of insulating fluid flow paths are arranged adjacently in the circumferential direction, the inner closing plate or the outer closing plate has a perforated inner closing plate formed with a hole through which the insulating fluid can flow. Alternatively, there is provided a stationary guidance device characterized by including a perforated inner obstruction plate.

According to the fourth aspect of the present invention, a plurality of disk windings formed by winding conductors are vertically stacked between the vertically elongated inner insulating cylinder and the outer insulating cylinder disposed on the outer peripheral side thereof. And a plurality of horizontal spacing pieces extending along the radial direction between the stacked disk windings are interposed at intervals in the circumferential direction, so that a plurality of Form a radial horizontal cooling path, and along the vertical direction between the inner insulating cylinder and the disk winding and between the outer insulating cylinder and the disk winding at both ends of the horizontal spacing piece A plurality of inner vertical cooling passages and an outer vertical flow which respectively communicate the horizontal cooling passages vertically along the inner and outer peripheral sides of the disk winding by interposing a plurality of vertical spacing pieces extending in the vertical direction. A passage is formed, and the inner vertical cooling passage is closed at each of a plurality of stages of the disk winding. The inner closing plate and the outer closing plate closing the outer vertical cooling passage are alternately provided at different vertical positions, thereby providing an insulating fluid flow comprising the horizontal cooling passage, the inner vertical cooling passage, and the outer vertical cooling passage. A stationary induction device in which a plurality of insulating fluid flow paths are arranged adjacent to each other in the circumferential direction, among the disc windings, those positioned upstream of the inner closing plate or the outer closing plate with respect to the insulating fluid; And a flow control unit for providing resistance to the flow of the static electricity.

According to the fifth aspect of the present invention, a plurality of disk windings formed by winding conductors are vertically stacked between a vertically long inner insulating tube and an outer insulating tube disposed on the outer peripheral side thereof. And a plurality of horizontal spacing pieces extending along the radial direction between the stacked disk windings are interposed at intervals in the circumferential direction, so that a plurality of Form a radial horizontal cooling path, and along the vertical direction between the inner insulating cylinder and the disk winding and between the outer insulating cylinder and the disk winding at both ends of the horizontal spacing piece A plurality of inner vertical cooling passages and an outer vertical flow which respectively communicate the horizontal cooling passages vertically along the inner and outer peripheral sides of the disk winding by interposing a plurality of vertical spacing pieces extending in the vertical direction. A passage is formed, and the inner vertical cooling passage is closed at each of a plurality of stages of the disk winding. The inner closing plate and the outer closing plate closing the outer vertical cooling passage are alternately provided at different vertical positions, thereby providing an insulating fluid flow comprising the horizontal cooling passage, the inner vertical cooling passage, and the outer vertical cooling passage. In the stationary induction device in which a plurality of insulating fluid flow paths are circumferentially arranged adjacent to each other, in the horizontal spacing pieces, the circular winding positioned on the upstream side in the insulating fluid flow direction with respect to the inner closing plate or the outer closing plate. The stationary guidance device is characterized in that a wide horizontal spacing piece having a wider width along the circumferential direction than other horizontal spacing pieces arranged at other positions is arranged between the horizontal guidance pieces.

According to the sixth aspect of the present invention, a plurality of disk windings each formed by winding a conductor are vertically stacked between a vertically elongated inner insulating cylinder and an outer insulating cylinder disposed on the outer peripheral side thereof. And a plurality of horizontal spacing pieces extending along the radial direction between the stacked disk windings are interposed at intervals in the circumferential direction, so that a plurality of Form a radial horizontal cooling path, and along the vertical direction between the inner insulating cylinder and the disk winding and between the outer insulating cylinder and the disk winding at both ends of the horizontal spacing piece A plurality of inner vertical cooling passages and an outer vertical flow which respectively communicate the horizontal cooling passages vertically along the inner and outer peripheral sides of the disk winding by interposing a plurality of vertical spacing pieces extending in the vertical direction. A passage is formed, and the inner vertical cooling passage is closed at each of a plurality of stages of the disk winding. The inner closing plate and the outer closing plate closing the outer vertical cooling passage are alternately provided at different vertical positions, thereby providing an insulating fluid flow comprising the horizontal cooling passage, the inner vertical cooling passage, and the outer vertical cooling passage. A stationary induction device in which a plurality of insulating fluid flow paths are arranged adjacent to each other in the circumferential direction, wherein the outer vertical flow path portion is not blocked by the inner blocking plate at a position immediately downstream of the inner blocking plate in the flow direction of the insulating fluid. Or, at an immediately downstream position of the outer blocking plate, to an inner channel portion not closed by the outer blocking plate, to prevent at least a part of the insulating fluid flowing vertically in each of the vertical cooling passages from passing, Provided is a stationary induction device characterized in that an auxiliary closing plate for generating a flow toward a horizontal cooling path is provided.

According to a seventh aspect of the present invention, in the stationary induction device according to the sixth aspect, the auxiliary closing plate closes either the inner insulating cylinder side or the disk winding side of the inner vertical cooling path. A stationary induction device characterized in that it is a plate or an auxiliary outer closing plate that closes either the outer insulating cylinder side or the disk winding side of the outer vertical cooling path.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a stationary induction device according to the present invention will be described below with reference to a transformer shown in FIGS. For the sake of simplicity, the same members as those shown in the conventional example are shown in FIGS.
The same reference numeral as 7 is used.

First Embodiment (FIGS. 1 to 3) FIG. 1 is a horizontal sectional view showing a winding of a transformer according to a first embodiment of the present invention, and FIGS. 1
3 is a sectional view taken along line X1-X1 and a sectional view taken along line X2-X2 of FIG. FIG. 3 is a perspective view for explaining the insulating fluid passage area.

As shown in these figures, the transformer winding 1
Are the outer winding 1A and the inner winding 1B arranged concentrically.
The outer winding 1A and the inner winding 1B have substantially similar configurations. In the present embodiment and each of the following embodiments, the overall configuration is representatively described for the outer winding 1A, and the inner winding 1B is described by assigning the same reference numerals to the same components as the outer winding 1A. Is omitted.

The outer winding 1A includes an outer insulating tube 3 arranged on the outer peripheral side of a vertically long inner insulating tube 2 and a plurality of conductors wound between the inner insulating tube 2 and the outer insulating tube 3. Are stacked and arranged coaxially. A plurality of horizontal spacing pieces 5 extending in the radial direction are arranged radially at equal intervals in the circumferential direction between the adjacent disc windings 4 in the laminating direction of the disc windings 4. Thus, a plurality of fan-shaped horizontal cooling passages 6 extending in the radial direction of the disk winding 4 are formed radially. Further, between the inner insulating tube 2 and the disk winding 4 and between the outer insulating tube 3 and the disk winding 4, a plurality of inner vertical spacing pieces 7 and a plurality of outer vertical spacing pieces 8, respectively, are provided. , And extend in the vertical direction at the inner and outer peripheral edges of the disk winding 4 in an arrangement corresponding to both ends of the horizontal spacing piece 5. Thereby, a plurality of inner cooling passages 9 and outer cooling passages 10 are formed on the inner peripheral side and the outer peripheral side of the disk winding 4, respectively, along the axial direction of the disk winding 4, that is, along the vertical direction.

Then, as shown in FIGS. 2A and 2B, the inner vertical cooling passage 9 is closed for each of a plurality of stages of the disk winding 4 and the horizontal cooling passage 9 is moved from the inner vertical cooling passage 9 side. An inner closing plate 11 extending over the 6th side and an outer closing plate 12 closing the outer vertical cooling passage 10 and extending from the outer vertical cooling passage 10 side to the horizontal cooling passage 6 alternately and circularly. Winding 4
Is provided over the entire circumference of As described above, by alternately arranging the inner closing plates 11 and the outer closing plates 12 at different heights for each of a plurality of stages of the disk windings 4, horizontal cooling is performed from the inner vertical cooling passage 9 and the outer vertical cooling passage 10. The inflow position and the outflow position of the insulating fluid a into the passage 6 are reversed on the inner and outer peripheral sides of the disk winding 4, respectively, and the insulating fluid a in the horizontal cooling passage 6
Are arranged in such a manner that the flow direction is opposite in the radial direction. While the insulating fluid a flows from the lower end to the upper end of the outer winding 1A, it flows between the disk windings 4 in a zigzag manner between the inner insulating tube 2 and the outer insulating tube 3, and Line 1A
Will cool the whole. In addition, as shown in FIG. 3, the upper and lower ends of the disk winding 4 are held by winding holding plates 13 and 14.

As shown in FIG. 1, a second inner insulating tube 15 is further provided on the outer winding 1A on the inner peripheral side of the inner insulating tube 2.
The inner winding 1 </ b> B is further provided with a second outer insulating cylinder 16 on the outer peripheral side of the outer insulating cylinder 3.
The space between the inner insulating tube 2 of the outer winding 1A and the second inner insulating tube 15 and the space between the outer insulating tube 3 of the inner winding 1B and the second outer insulating tube 16 are: The inner insulating layer 17 and the outer insulating layer 18 in which the insulating fluid is stored respectively. The inner insulating layer 17 and the outer insulating layer 18 are also provided with the second inner vertical spacing piece 7a and the second
Are divided in the circumferential direction corresponding to the vertical cooling passages 9 and 10 by the outer vertical spacing piece 8a. In the present embodiment, the insulating fluid flow path area composed of the vertical cooling paths 9 and 10 and the insulating layers 17 and 18 thus divided is connected to the transformer winding 1.
The inner obstruction plate 1
A first insulating fluid flow area 19 and a second insulating fluid flow area 20 in which the vertical position of the first and outer closing plates 12 are different from each other.
As shown in FIGS. 1 and 3, the first insulating fluid flow path area 19 and the second insulating fluid flow path area 20 are alternately arranged in the circumferential direction.

More specifically, the inner closing plate 11 (11a) and the outer closing plate 12 (12
The height position of the second insulating fluid flow path region 20
Inner closing plate 11 (11b) and outer closing plate 12 (1b)
2b), the first and second insulating fluid flow paths in which the height positions of the inner closing plate and the outer closing plates are different. Area 1
9, 20 are alternately arranged over the entire circumference of the outer winding.

According to the configuration of the first embodiment,
In each of the insulating fluid flow path regions 19 and 20, when the insulating fluid a flows upward from below, the inner closing plates 11a and 11b and the outer closing plates 12
Since the flow direction is greatly changed by a and 12b,
As shown in FIGS. 2 (A) and 2 (B), the lengths of the arrows are made different (a flow having a longer arrow is set to a higher flow rate). It is the largest in the horizontal cooling passage 6 located immediately below each of the outer closing plates 12a and 12b, and the smallest in the horizontal cooling passage 6 just above the inner closing plates 11a and 11b and the outer closing plates 12a and 12b. . For this reason, each insulating fluid flow path area 1
At every 9, 20, the cooling performance changes at each height position as in the conventional case.

However, in the present embodiment, the inner closing plates 11a, 11b and the outer closing plates 12a, 12b of the first and second insulating fluid flow paths 19, 20 which are circumferentially adjacent to each other are horizontally cooled in the vertical direction. One stage of road 6, shifted up and down,
Thereby, the height positions at which the flow speed of the insulating fluid a is different are shifted. Accordingly, at the height position where the flow velocity is the smallest in the horizontal cooling passage 6 in the adjacent first insulating fluid flow path area 19, the flow velocity of the insulating fluid a is the largest in the second insulating fluid flow path area 20. . As a result, a portion having a high cooling property and a portion having a low cooling property are in a stepped state in each of the adjacent first and second insulating fluid flow path regions 19 and 12, and the amount of heat generated in the disk winding 4 is equalized by heat conduction. The temperature difference due to the heating is offset at each position in the circumferential direction.

Therefore, according to the present embodiment, the above-described heating canceling action is applied to the first and second disk windings 4 continuously arranged over the entire circumference of the transformer winding 1. It is performed alternately for each of the insulating fluid flow passage areas 19 and 20, so that the cooling action is entirely uniform, and the local excessive temperature due to the non-uniform flow velocity of the inner obstruction plate and the outer obstruction plate, which has conventionally been a problem. The rise can be effectively prevented.

Although the present embodiment has been applied to the case where the insulating fluid a has an upward flow, the present invention can also be applied to a case where the insulating fluid a has a downward flow.

Second Embodiment (FIGS. 4 to 6) FIG. 4 is a horizontal sectional view showing a transformer winding according to a second embodiment of the present invention, and FIGS. 5A and 5B are FIGS. 3 is a sectional view taken along line Y1-Y1 and a sectional view taken along line Y2-Y2 of FIG.
FIG. 6 is a perspective view for explaining the insulating fluid passage area.

As shown in FIG. 4, the transformer winding 1 of the present embodiment also has an outer winding 1A and an inner winding 1B. As in the first embodiment, the outer winding 1A and the inner winding 1B are divided into circumferentially divided horizontal cooling paths 6, inner vertical cooling paths 9, outer vertical cooling paths 10, and inner insulating layers 17 as in the first embodiment. A first insulating fluid flow path region 19 composed of an outer insulating layer 18 and the like, and a second insulating fluid flow path region 20 are provided. The first insulating fluid flow path areas 19 and the second insulating fluid flow path areas 20 are arranged alternately in the circumferential direction. In this respect, the present embodiment is almost the same as the first embodiment. However, in the present embodiment, as described below, means for preventing the occurrence of thermal nonuniformity by the first insulating fluid flow path area 19 and the second insulating fluid flow path area 20 is different.

That is, in the present embodiment, as shown in FIGS. 5A and 6, the horizontal cooling path 6, the inner vertical cooling path 9, and the outer vertical cooling path 1
In the same manner as in the first embodiment, the inside of the inner insulating layer 17 and the outer insulating layer 18 have a space in which the insulating fluid accumulates, as indicated by an arrow a1. Configuration.

On the other hand, in the horizontal cooling path 6, the inner vertical cooling path 9 and the outer vertical cooling path 10 as the second insulating fluid flow path area 20, arrows a2 in FIGS. As shown in the drawing, the insulating fluid flows downward from above, contrary to the first insulating fluid flow path region 19. In the present embodiment, the inner insulating layer 17 is used for the outer winding 1A as a means for causing the insulating fluid a2 to flow downward.

More specifically, as shown by an arrow a3 in FIGS. 5B and 6, a communication hole 2 is formed at the upper end of the inner insulating cylinder 2.
The inner insulating layer 17 and the inner vertical cooling path 9 communicate with each other through the communication hole 21. Then, in the inner insulating layer 17, the insulating fluid flows upward from below, and the insulating fluid a3 flowing to the upper end in the inner insulating layer 17 passes through the communication hole 21 at the upper end of the inner insulating cylinder 2. Then, it flows into the uppermost position of the inner vertical cooling passage 9 and thereafter flows to the horizontal cooling passage 6 and the outer vertical cooling passage 10 so as to be a downward flow indicated by an arrow a2. In addition, the inner and outer closing plates 11 and 12 of the first insulating fluid flow path region 19,
The inner and outer closing plates 11 and 12 of the second insulating fluid flow path region 20 are arranged at the same height. Further, in the second insulating fluid flow path area 20, the uppermost closing plate of the inner vertical cooling path 9 is
The inner closing plate 11 is provided. As a result, the insulating fluid a2 that has flowed down from above into the inner vertical cooling passage 9 through the communication hole 21
Is designed to change the flow in a zigzag immediately.

According to such a configuration, in the first insulating fluid flow path area 19, as in the conventional example, the rising insulating fluid a1 is raised.
Is large immediately below the inner and outer blocking plates 11 and 12 and smaller immediately above the inner and outer blocking plates 11 and 12, the cooling may be non-uniform. Since the insulating fluid a2 flowing from the layer 17 flows as a downward flow through the horizontal cooling passage 6 and the outer vertical cooling passage 10, it becomes large just above the inner and outer closing plates 11, 12 and becomes smaller just below. Therefore, since the inner and outer closing plates 11 and 12 of the first insulating fluid passage region 19 and the inner and outer closing plates 11 and 12 of the second insulating fluid passage region 20 are arranged at the same height, the flow velocity is reduced. The location where the cooling becomes non-uniform due to the difference is upside down in the first insulating fluid flow path area 19 and the second insulating fluid flow path area 20, and the flow rate distributions of the insulating fluids a 1 and a 2 are adjacent to each other. Second insulating fluid flow path area 19, 2
0 is reversed between the inner and outer closing plates 11 and 12, thereby making the heat generation action in the entire outer winding 1 </ b> A uniform. Therefore, according to the present embodiment as well, it is possible to prevent the local excessive rise in temperature due to the uneven distribution of the flow velocity between the inner and outer closing plates, which has conventionally been a problem.

Further, according to the configuration of the present embodiment, the insulating fluid a3 in the low temperature state which has risen without contacting the heating element in the inner insulating layer 17 of the second insulating fluid flow path region 20 is supplied to the communication hole 2
After flowing into the inner vertical cooling path 9 from the upper part 1, it contacts the upper end side disk winding 4 which is a heating element. And the cooling effect can be improved from that aspect as well.

Although illustration is omitted, the inner winding 1 is not shown.
As for B, the insulating fluid flows through the outer insulating layer 18 as an ascending flow, and the insulating fluid flows into the outer vertical flow path through a communication hole formed at the upper end of the outer insulating cylinder, and is made to flow downward therefrom. It is like that. That is, the same operation is performed with respect to the inner winding 1B, except that the arrangement of the inner and outer circumferences is different from that of the outer winding 1A described above, and the same effect is obtained.

In this embodiment, the insulating layer for flowing the insulating fluid as an upward flow is provided by the inner insulating layer 17 provided on the inner peripheral side of the outer winding 1A and the outer insulating layer provided on the outer peripheral side of the inner winding 1B. Although the layer 18 is used, it is also possible to conversely implement the outer insulating layer (not shown) provided on the outer peripheral side of the outer winding or the inner insulating layer provided on the inner peripheral side of the inner winding. Further, the flow direction of the insulating fluid may be set upside down as in the case of the above-described illustration. In that case, a communication hole may be formed at the lower end side of the inner insulating cylinder or the outer insulating cylinder.

Third Embodiment (FIGS. 7 to 9) FIG. 7 is an enlarged view of a main part of a transformer winding according to a third embodiment of the present invention, and FIG. 8 is a view of the inner closing plate shown in FIG. FIG. 9 is a cross-sectional view (cross-sectional view taken along line AA) of an upper position, and FIG. 9 is a cross-sectional view (cross-sectional view taken along line BB) of an upper position of the outer closing plate. The overall configuration is the same as that of the above-described conventional example or the first and second embodiments, and a description thereof will be omitted (the same applies to the following fourth to seventh embodiments).

As shown in FIG. 7, also in the present embodiment, a plurality of disk windings 4 are vertically stacked between the inner insulating tube 2 and the outer insulating tube 3, and the disk A horizontal cooling path 6 and inner and outer vertical cooling paths 9 and 10 are formed between upper and lower portions of the winding 4 and on the inner and outer peripheral sides. The inner vertical cooling passage 9 and the outer vertical cooling passage 10 are provided with an inner closing plate 11 and an outer closing plate 12 for each of a plurality of stages of the disk winding 4.

Under such a configuration, in the present embodiment, as shown in FIG. 7 and FIG.
A portion facing the inner vertical cooling passage 9 is provided with a perforated inner blocking plate 11c having a number of small holes 22 through which the insulating fluid a can flow vertically. On the other hand, as shown in FIG. 7 and FIG. 9, a perforated outer side having a large number of small holes 23 through which the insulating fluid a can flow vertically in a portion facing the outer vertical cooling passage 10 as the inner blocking plate 12. A closing plate 12c is provided.

According to such a structure, the insulating fluid a flows upward through the inner vertical cooling passage 9 and the outer vertical cooling passage 10 as shown in the figure, and is formed on the lower surfaces of the perforated inner closing plate 11c and the perforated outer closing plate 12c. When it reaches, not all are guided to the horizontal cooling path 6, but a part thereof rises through the small holes 22 and 23. Therefore, the insulating fluid a
Insulating fluid can be forced to flow to a portion of the horizontal cooling passage 6 immediately above the inner closing plate 11 and the outer closing plate 12 which is generated when the fluid flows.

Therefore, according to the present embodiment, by improving the non-uniform distribution of the flow velocity of the insulating fluid a itself,
It is possible to prevent a local excessive temperature rise which has conventionally been a problem.

Although the present embodiment is applied to the case where the insulating fluid a is used as the upward flow, it can also be applied to the case where the insulating fluid a is used as the downward flow, and the same effect can be obtained in that case.

Fourth Embodiment (FIG. 10) FIG. 10 is an enlarged view of a main part of a transformer winding according to a fourth embodiment of the present invention.

As shown in FIG. 10, in the present embodiment, the disk windings 4 arranged on the upstream side of the inner closing plate 2 or the outer closing plate 3 in the flow direction of the insulating fluid a are respectively provided with the inner closing plates. 2 or flow control units 24, 2 for providing resistance to the flow of the insulating fluid a on the side where the outer closing plate 3 is disposed
5 are provided. That is, in the example of FIG. 10, the insulating fluid a is set to the upward flow, and the horizontal piece projects from the disk winding 4 disposed immediately below the inner closing plate 11 toward the inner vertical cooling path 9, and the flow controller 24 are formed. Thereby, the inner vertical cooling passage 9 below the inner blocking plate 11 is narrower in the radial direction than other portions. Similarly, another flow control unit 25 is formed by projecting a horizontal piece from the disk winding 4 disposed immediately below the outer blocking plate 12 toward the outer vertical cooling passage 10. As a result, the outer vertical cooling passage 10 below the outer closing plate 12 is also narrower in the radial direction than other portions.

According to such a configuration, when the insulating fluid a flows upward through the inner vertical cooling passage 9 and the outer vertical cooling passage 10 as shown in FIG. The upward flow of the insulating fluid a is hindered by the flow controllers 24 and 25, and is partially guided to the horizontal cooling passage 6 disposed immediately below the insulating fluid a. Therefore, the flow to the horizontal flow path 6 along the lower surfaces of the inner closing plate 11 and the outer closing plate 12 decreases, and the flow of the insulating fluid a becomes more uneven compared to the conventional configuration in which the flow is concentrated in this portion. Can be alleviated.

Therefore, according to the present embodiment, by improving the flow rate distribution of the insulating fluid a, it is possible to eliminate the bias of the cooling effect, which has been a problem in the past, and to prevent a local excessive rise in temperature. it can.

Although the present embodiment is also applied to the case where the insulating fluid a is used as the upward flow, the present invention can be applied to the case where the insulating fluid a is used as the downward flow, and the same effect can be obtained in that case.

Fifth Embodiment (FIGS. 11 and 12) FIG. 11 is an enlarged view of a main part of a transformer winding according to a fifth embodiment of the present invention, and FIG. 12 is a sectional view taken along line CC in FIG. It is.

As shown in these figures, in the present embodiment, in the case where the insulating fluid a flows as an upward flow, the horizontal space between the plurality of disk windings 4 to form the horizontal cooling path 6 is formed. One of the pieces 5 that is disposed immediately upstream of the inner blocking plate 11 or the outer blocking plate 12 in the direction of the insulating fluid flow is replaced by another horizontal spacing piece 5b that is disposed at another position to form a horizontal cooling path. The width is a wide horizontal interval piece 5a having a wider width along the circumferential direction. That is, as shown in FIG. 12, both edges in the circumferential direction of the wide horizontal space piece 5 a
The horizontal cooling passage 6 formed by the wider horizontal spacing piece 5a projects beyond both circumferential edges of the other horizontal spacing piece 5b, and is narrower.

According to such a configuration, the provision of the wide horizontal spacing pieces 5a allows the horizontal cooling passage 6 immediately below the inner closing plate 11 or the outer closing plate 12 through which the insulating fluid a easily flows.
By increasing the fluid resistance before this, a large amount of the insulating fluid can be caused to flow through another horizontal cooling passage 6 that is difficult to flow.

Therefore, also in this embodiment, by improving the flow rate distribution of the insulating fluid a, the bias of the cooling effect, which has been a problem in the past, can be eliminated, and a local excessive rise in temperature can be prevented. .

Although the present embodiment is also applied to the case where the insulating fluid a is used as the upward flow, it can also be applied to the case where the insulating fluid a is used as the downward flow, in which case the same effect can be obtained.

Sixth Embodiment (FIG. 13) FIG. 13 is an enlarged view of a main part of a transformer winding according to a sixth embodiment of the present invention.

As shown in FIG. 13, in the present embodiment, when the insulating fluid a flows as an upward flow, the inner closing plate 11 is provided at a position immediately downstream of the inner closing plate 11 in the flow direction of the insulating fluid a. Are located in the respective vertical cooling passages 9 and 1 in the portion of the outer vertical flow passage 9 that is not blocked and the portion of the inner flow passage 10 that is located immediately downstream of the outer blocking plate 12 and is not blocked by the outer blocking plate 12.
An auxiliary inner closing plate 26 and an auxiliary outer closing plate 27 that prevent at least a part of the insulating fluid a flowing upward at 0 and generate a flow toward the horizontal cooling passage 6 are provided. The auxiliary inner closing plate 26 and the auxiliary outer closing plate 27 are located at substantially the same height as the lower surface of the circular winding 4 disposed immediately downstream of the inner closing plate 11 and the outer closing plate 12, for example. And the outer insulating cylinder 3 is closed so as to close approximately half the cross sections of the inner vertical cooling passage 9 and the outer vertical cooling passage 10.

According to such a configuration, the inner closing plate 11
Alternatively, all of the insulating fluid a flowing upward through the distal end side of the outer closing plate 12 does not flow to the inner vertical cooling passage 9 or the outer vertical cooling passage 10, and the upward flow is obstructed by the auxiliary inner closing plate 26 and the auxiliary outer closing plate 27. Therefore, a part of the insulating fluid a flows into the horizontal cooling passage 6 immediately above the inner closing plate 11 or the outer closing plate 12. Therefore,
It is possible to increase the flow velocity in the horizontal cooling passage 6 immediately above the inner blocking plate 11 or the outer closing plate 12, which has been the most difficult to flow conventionally.

Therefore, according to the present embodiment, by improving the flow velocity distribution of the insulating fluid a, it is possible to eliminate the bias of the cooling effect, which has been a problem in the past, and to prevent a local excessive rise in temperature. it can.

Although the present embodiment is also applied to the case where the insulating fluid a is used as the upward flow, the present invention can be applied to the case where the insulating fluid a is used as the downward flow. In some cases, only one of the inner closing plate 11 and the outer closing plate 12 may be provided. Seventh Embodiment (FIG. 14) FIG. 14 is an enlarged view of a main part of a transformer winding according to a seventh embodiment of the present invention. This embodiment is a modification of the sixth embodiment.

That is, as shown in FIG. 14, also in this embodiment, at the position immediately downstream of the inner blocking plate 11 in the flow direction of the insulating fluid a, the portion of the outer vertical channel 9 that is not blocked by the inner blocking plate 11 Or at a position of the inner vertical flow path 10 immediately downstream of the outer blocking plate 12 and not blocked by the outer blocking plate 12, the respective vertical cooling passages 9,
An auxiliary inner closing plate 28 or an auxiliary outer closing plate 29 for preventing at least a part of the insulating fluid a flowing in the vertical direction in the inside 10 and generating a flow toward the horizontal cooling passage 6 is provided. The cooling path closing position by the inner closing plate 28 or the auxiliary outer closing plate 29 is different from that of the sixth embodiment.

In the case of this embodiment, the auxiliary inner closing plate 2
8 closes substantially half of the cross section of the inner vertical cooling passage 9 on the disk winding 4 side, and the auxiliary outer closing plate 29 is also a disc of the cross section of the outer vertical cooling passage 10. Winding 4
Almost half of the side is closed.

Even with such a configuration, the inner closing plate 1
All of the insulating fluid a flowing upward through the distal end side of the first or outer closing plate 12 does not flow to the inner vertical cooling passage 9 or the outer vertical cooling passage 10, and the upward flow is caused by the auxiliary inner closing plate 26 and the auxiliary outer closing plate 27. As a result, a part of the insulating fluid a flows into the horizontal cooling passage 6 immediately above the inner closing plate 11 or the outer closing plate 12. Therefore, the inner closing plate 1 which has been in the state in which the flow is the least difficult in the past.
The flow velocity in the horizontal cooling passage 6 just above the first or outer blocking plate 12 can be increased.

Therefore, also in the present embodiment, by improving the flow velocity distribution of the insulating fluid a, the bias of the cooling effect, which has conventionally been a problem, can be eliminated, and a local excessive rise in temperature can be prevented. .

Although the present embodiment is also applied to the case where the insulating fluid a is used as the upward flow, the present invention can be applied to the case where the insulating fluid a is used as the downward flow, and the same effect can be obtained in that case. In some cases, only one of the inner closing plate 11 and the outer closing plate 12 may be provided.

Other Embodiments The present invention is not limited to the configurations specifically described in the above-described first to seventh embodiments. Although not shown, the configurations described in each embodiment are selectively combined. Thus, the effects of the above embodiments can be obtained in a combined manner.

[0064]

As described in detail in the above embodiment, according to the stationary induction device according to the present invention, an excessively large amount of the insulating fluid or a non-uniform portion is dispersed. It is possible to enhance the cooling performance of the portion where the temperature rise is likely to occur, thereby achieving the effect that the temperature of the entire winding can be made uniform.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view showing a winding of a transformer according to a first embodiment of the present invention.

2A is a sectional view taken along line X1-X1 of FIG. 1, and FIG. 2B is a sectional view taken along line X2-X2 of FIG.

FIG. 3 is a perspective view of FIG. 1;

FIG. 4 is a horizontal sectional view showing a winding of a transformer according to a second embodiment of the present invention.

5A is a sectional view taken along line Y1-Y1 of FIG. 4, and FIG. 5B is a sectional view taken along line Y2-Y2 of FIG.

FIG. 6 is a perspective view of FIG. 4;

FIG. 7 is an essential part enlarged view showing a winding of a transformer according to a third embodiment of the present invention.

FIG. 8 is a sectional view taken along line AA of FIG. 7;

FIG. 9 is a sectional view taken along line BB of FIG. 7;

FIG. 10 is an essential part enlarged view showing a winding of a transformer according to a fourth embodiment of the present invention.

FIG. 11 is an enlarged view of a main part showing windings of a transformer according to a fifth embodiment of the present invention.

FIG. 12 is a sectional view taken along line CC of FIG. 11;

FIG. 13 is an enlarged view of a main part showing windings of a transformer according to a sixth embodiment of the present invention.

FIG. 14 is an essential part enlarged view showing a winding of a transformer according to a seventh embodiment of the present invention.

FIG. 15 is a horizontal sectional view showing a winding of a conventional transformer.

FIG. 16 is a perspective view of FIG.

FIG. 17 is a sectional view taken along line XX of FIG. 15;

[Explanation of symbols]

 Reference Signs List 1A outer winding 1B inner winding 2 inner insulating cylinder 3 outer insulating cylinder 4 disk winding 5, 5a, 5b horizontal spacing piece 6 horizontal cooling path 7 inner vertical spacing piece 8 outer vertical spacing piece 8a second outer spacing piece Reference Signs List 9 inner cooling path 10 outer cooling path 11, 11a, 11b inner closing plate 12, 12a, 12b outer closing plate 13, 14 winding presser plate 15, 16 second inner insulating cylinder 17 inner insulating layer 18 outer insulating layer 19th 1 insulating fluid flow path area 20 second insulating fluid flow path area 21 communication hole 22, 23 small hole 24, 25 flow control unit 26 auxiliary inner closing plate 27 auxiliary outer closing plate 28 auxiliary inner closing plate 29 auxiliary outer closing plate

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masumi Nakatate 2-1 Ukishima-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture F-term inside the Toshiba Hamakawasaki Plant (reference) 5E050 CA01 HA06 5E059 AA10

Claims (7)

[Claims] 1. A plurality of disk windings each formed by winding a conductor are vertically stacked between an elongated inner insulating cylinder and an outer insulating cylinder arranged on the outer peripheral side thereof, and the lamination is performed. A plurality of radially horizontal cooling passages between the respective disk windings by interposing a plurality of horizontal spacing pieces extending along the radial direction at intervals in the circumferential direction between the respective disk windings. And extending vertically between the inner insulating cylinder and the disk winding and between the outer insulating cylinder and the disk winding at both ends of the horizontal spacing piece. Forming a plurality of inner vertical cooling passages and outer vertical flow passages that vertically communicate with the horizontal cooling passages on the inner peripheral side and the outer peripheral side of the disk winding by interposing the vertical spacing pieces, For each of a plurality of stages of the disk winding, an inner closing plate closing the inner vertical cooling passage, and An outer closing plate for closing the outer vertical cooling passage is alternately provided at a different vertical position, thereby providing a plurality of insulating fluid flows for insulating fluid flow comprising the horizontal cooling passage, the inner vertical cooling passage, and the outer vertical cooling passage. In the stationary induction device in which the road areas are arranged adjacent to each other in the circumferential direction, for each of the one or two or more insulating fluid flow paths adjacent to each other in the circumferential direction, the inner closing plate forming each insulating fluid flow path area, and A stationary guidance device characterized by different height positions of the outer closing plate. 2. A plurality of disk windings each formed by winding a conductor are vertically stacked between a vertically long inner insulating cylinder and an outer insulating cylinder disposed on the outer peripheral side thereof, and the lamination is performed. A plurality of radially horizontal cooling passages between the respective disk windings by interposing a plurality of horizontal spacing pieces extending along the radial direction at intervals in the circumferential direction between the respective disk windings. And extending vertically between the inner insulating cylinder and the disk winding and between the outer insulating cylinder and the disk winding at both ends of the horizontal spacing piece. Forming a plurality of inner vertical cooling passages and outer vertical flow passages that vertically communicate with the horizontal cooling passages on the inner peripheral side and the outer peripheral side of the disk winding by interposing the vertical spacing pieces, For each of a plurality of stages of the disk winding, an inner closing plate closing the inner vertical cooling passage, and An outer closing plate for closing the outer vertical cooling passage is alternately provided at a different vertical position, thereby providing a plurality of insulating fluid flows for insulating fluid flow comprising the horizontal cooling passage, the inner vertical cooling passage, and the outer vertical cooling passage. In a stationary induction device in which road areas are arranged adjacent to each other in the circumferential direction, a second inner insulating cylinder or a second outer insulating cylinder is provided at a constant interval on an inner peripheral side of the inner insulating cylinder or an outer peripheral side of the outer insulating cylinder. To form an annular space through which the insulating fluid can flow in the vertical direction, and a second space disposed at the same circumferential position as the inner vertical spacing piece or the outer vertical spacing piece.
The inner vertical spacing piece or the second outer vertical spacing piece of
A plurality of inner insulating layers or outer insulating layers radially adjacent to the inner vertical cooling path or the outer vertical cooling path are formed by partitioning in the circumferential direction, and upper or lower portions of these inner insulating layers or outer insulating layers are formed. One or more of the insulating fluid flow path areas are connected to the inner vertical cooling path or the outer vertical cooling path, and the insulating fluid is connected to the inner vertical cooling path in the communicating inner insulating layer or the outer insulating layer. A stationary induction machine characterized in that it is configured to flow upside down in a path or in the outside vertical cooling path. 3. A plurality of disk windings each formed by winding a conductor are vertically stacked between an elongated inner insulating cylinder and an outer insulating cylinder disposed on the outer peripheral side of the inner insulating cylinder. A plurality of radially horizontal cooling passages between the respective disk windings by interposing a plurality of horizontal spacing pieces extending along the radial direction at intervals in the circumferential direction between the respective disk windings. And extending vertically between the inner insulating cylinder and the disk winding and between the outer insulating cylinder and the disk winding at both ends of the horizontal spacing piece. Forming a plurality of inner vertical cooling passages and outer vertical flow passages that vertically communicate with the horizontal cooling passages on the inner peripheral side and the outer peripheral side of the disk winding by interposing the vertical spacing pieces, For each of a plurality of stages of the disk winding, an inner closing plate closing the inner vertical cooling passage, and An outer closing plate for closing the outer vertical cooling passage is alternately provided at a different vertical position, thereby providing a plurality of insulating fluid flows for insulating fluid flow comprising the horizontal cooling passage, the inner vertical cooling passage, and the outer vertical cooling passage. In the stationary induction device in which the road area is arranged adjacently in the circumferential direction, the inner obstruction plate or the outer obstruction plate is a perforated inner obstruction plate or a perforated inner obstruction plate formed with a hole through which the insulating fluid can flow. A static induction device characterized by including: 4. A plurality of disk windings each formed by winding a conductor are vertically stacked between a vertically elongated inner insulating cylinder and an outer insulating cylinder disposed on the outer peripheral side thereof, and the lamination is performed. A plurality of radially horizontal cooling passages between the respective disk windings by interposing a plurality of horizontal spacing pieces extending along the radial direction at intervals in the circumferential direction between the respective disk windings. And extending vertically between the inner insulating cylinder and the disk winding and between the outer insulating cylinder and the disk winding at both ends of the horizontal spacing piece. Forming a plurality of inner vertical cooling passages and outer vertical flow passages that vertically communicate with the horizontal cooling passages on the inner peripheral side and the outer peripheral side of the disk winding by interposing the vertical spacing pieces, For each of a plurality of stages of the disk winding, an inner closing plate closing the inner vertical cooling passage, and An outer closing plate for closing the outer vertical cooling passage is alternately provided at a different vertical position, thereby providing a plurality of insulating fluid flows for insulating fluid flow comprising the horizontal cooling passage, the inner vertical cooling passage, and the outer vertical cooling passage. In a stationary induction device in which a road area is arranged adjacently in a circumferential direction, a resistance is given to a flow of the insulating fluid to a portion of the disc winding that is located on the upstream side of the insulating fluid of the inner closing plate or the outer closing plate. A stationary guidance device provided with a flow control unit. 5. A plurality of disk windings formed by winding conductors are vertically stacked between a vertically elongated inner insulating cylinder and an outer insulating cylinder disposed on the outer peripheral side thereof, and the lamination is performed. A plurality of radially horizontal cooling passages between the respective disk windings by interposing a plurality of horizontal spacing pieces extending along the radial direction at intervals in the circumferential direction between the respective disk windings. And extending vertically between the inner insulating cylinder and the disk winding and between the outer insulating cylinder and the disk winding at both ends of the horizontal spacing piece. Forming a plurality of inner vertical cooling passages and outer vertical flow passages that vertically communicate with the horizontal cooling passages on the inner peripheral side and the outer peripheral side of the disk winding by interposing the vertical spacing pieces, For each of a plurality of stages of the disk winding, an inner closing plate closing the inner vertical cooling passage, and An outer closing plate for closing the outer vertical cooling passage is alternately provided at a different vertical position, thereby providing a plurality of insulating fluid flows for insulating fluid flow comprising the horizontal cooling passage, the inner vertical cooling passage, and the outer vertical cooling passage. In the stationary induction device in which the road area is arranged adjacently in the circumferential direction, among the horizontal spacing pieces, the horizontal gap piece is disposed between the inner blocking plate or the outer closing plate and the circular winding positioned on the upstream side in the insulating fluid flow direction. A stationary horizontal guiding piece having a wider width along the circumferential direction than other horizontal spacing pieces disposed at other positions. 6. A plurality of disk windings formed by winding conductors are vertically stacked between an elongated inner insulating cylinder and an outer insulating cylinder disposed on the outer peripheral side thereof, and the lamination is performed. A plurality of radially horizontal cooling passages between the respective disk windings by interposing a plurality of horizontal spacing pieces extending along the radial direction at intervals in the circumferential direction between the respective disk windings. And extending vertically between the inner insulating cylinder and the disk winding and between the outer insulating cylinder and the disk winding at both ends of the horizontal spacing piece. Forming a plurality of inner vertical cooling passages and outer vertical flow passages that vertically communicate with the horizontal cooling passages on the inner peripheral side and the outer peripheral side of the disk winding by interposing the vertical spacing pieces, For each of a plurality of stages of the disk winding, an inner closing plate closing the inner vertical cooling passage, and An outer closing plate for closing the outer vertical cooling passage is alternately provided at a different vertical position, thereby providing a plurality of insulating fluid flows for insulating fluid flow comprising the horizontal cooling passage, the inner vertical cooling passage, and the outer vertical cooling passage. In a stationary induction device in which a road area is arranged adjacently in the circumferential direction, an outer vertical flow path portion which is not blocked by the inner blocking plate at a position immediately downstream of the inner blocking plate in the flow direction of the insulating fluid, or the outer blocking plate The flow path toward the horizontal cooling path side is prevented by preventing at least a part of the insulating fluid flowing vertically in each vertical cooling path from passing through the inner flow path portion which is not closed by the outer blocking plate at a position immediately downstream of the flow path. A stationary guidance device characterized by providing an auxiliary closing plate for causing the above. 7. The stationary guidance device according to claim 6, wherein
The auxiliary closing plate is an auxiliary inner closing plate that closes either the inner insulating cylinder side or the disk winding side of the inner vertical cooling path,
Alternatively, the stationary induction device is an auxiliary outer closing plate that closes either the outer insulating cylinder side or the disk winding side of the outer vertical cooling path.