JP2018037444A - Tank for stationary induction apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tank for a stationary induction apparatus having an oil saving structure.SOLUTION: A tank stationary induction apparatus includes an upper part, a central part, and a lower part. The central part is a rectangular column of an octagon at a cross section. The upper part or the lower part is a rectangular column of an inverted octagon at the cross section. The apparatus includes a structure in which longitudinal lengths of a lateral face of the upper part and the lower part are longer than a longitudinal length of the central part.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a stationary induction device tank.

  In order to reduce the size and weight of static induction equipment such as oil-filled insulation transformers, an oil-saving structure of a tank for static induction equipment that stores the contents of the static induction equipment together with an insulating medium such as insulating oil is important.

JP 2008-53262 A Japanese Patent Laying-Open No. 2015-8173 JP 2007-184477 A

  Embodiment provides the tank for stationary induction apparatuses provided with an oil-saving structure.

  A stationary induction device tank according to an embodiment includes an upper part, a central part, and a lower part, wherein the central part is an octagonal prism in a transverse section, and the upper part or the lower part is an inverted octagonal prism in a transverse section. The front and back lengths of the upper and lower side portions are longer than the front and rear lengths of the central portion.

The perspective view which shows typically the structure of the tank for static induction apparatuses of the static induction apparatus which concerns on embodiment The perspective view which shows the structure of the tank for static induction apparatuses typically Side view schematically showing the configuration of a tank for stationary induction equipment Front view schematically showing the configuration of a tank for stationary induction equipment (A), (b), (c) is a cross-sectional view showing a schematic configuration of a tank for stationary induction equipment in the lines AA, BB, and CC in FIG. 3, respectively. Top view schematically showing the configuration of a tank for stationary induction equipment The perspective view which shows typically the structure of the tank for static induction apparatuses concerning a modification The top view which shows typically the structure of the tank for static induction apparatuses concerning a modification The perspective view which shows typically the structure of the tank for static induction apparatuses concerning a modification The top view which shows typically the structure of the tank for static induction apparatuses concerning a modification

Hereinafter, embodiments will be described with reference to the drawings. In the description of the embodiment, substantially the same components are denoted by the same reference numerals, and description thereof is omitted.
1 to 6 are diagrams illustrating a schematic configuration example of a stationary induction device tank according to the embodiment. FIG. 1 is a perspective view schematically showing a configuration of a stationary induction device tank 20 of the stationary induction device 1 according to the embodiment. FIG. 2 is a perspective view schematically showing the configuration of the stationary induction device tank 20. The radiator 10 is connected to the stationary induction device tank 20, the pipe 12 connecting the stationary induction device tank 20 and the radiator 10, and the stationary induction device tank 20. A lid that covers the upper part of the induction device tank 20 is additionally shown.

  FIG. 3 is a side view schematically showing a configuration viewed from the side of the stationary induction device tank 20, that is, a configuration viewed from the S direction of FIG. FIG. 4 is a front view schematically showing a configuration viewed from the front of the stationary induction device tank 20, that is, a configuration viewed from the R direction of FIG. In FIG. 3, the contents 60 of the stationary guidance device 1 are illustrated by broken lines.

  5 (a), (b), and (c) are cross-sectional views showing schematic configurations along the lines AA, BB, and CC in FIG. 3, respectively. Fig. 6 schematically shows an iron core 60a and a coil 60b wound around the outer circumference of the iron core 60a as the contents 60 of the stationary induction device 1. The content 60 of the stationary induction device 1 has a cylindrical shape with the vertical direction as the axial direction, and the shape in the cross section is round. FIG. 6 is a top view schematically illustrating the configuration of the stationary induction device tank 20, and schematically illustrates a state in which the contents 60 of the stationary induction device 1 are installed. In the drawings, the directions of up, down, left, and right and back are shown for explanation.

  As shown in FIG. 2, the stationary induction device 1 is configured by arranging a plurality of radiators 10 with predetermined intervals on the left and right side surfaces of the stationary induction device tank 20. The stationary induction device tank 20 and the radiator 10 are connected via a pipe 12 provided on the upper portion of the stationary induction device tank 20.

  As shown in FIG. 3 and the like, the stationary induction device tank 20 is provided with the contents 60 of the stationary induction device 1, and the inside of the stationary induction device tank 20 is filled with insulating oil (not shown). This insulating oil has a function as a coolant for the stationary induction device 1. The entire contents 60 of the stationary induction device 1 are immersed in insulating oil in the stationary induction device tank 20, and the insulating oil circulates in the stationary induction device tank 20, the pipe 12 and the radiator 10, and thereby the stationary induction device. The content 60 of the stationary induction device 1 installed in the tank 20 is cooled.

  The stationary induction device tank 20 includes three parts, that is, an upper part 50, a central part 52, and a lower part 54 from above, and insulating oil is stored in the interior from the lower part 54 to the upper part 50. The upper part 50 is located above the stationary induction device tank 20 and functions mainly as a place where the pipe 12 of the radiator 10 is attached. Further, as shown in FIGS. 7 to 10 to be described later, if the front side or the rear side has a rectangular box shape, the function of an attachment place such as a bushing can be performed.

  The lower part 54 is located below the stationary induction device tank 20 and can serve a function as an attachment location of the pipe 12 of the radiator 10, a bushing attachment location, and the like. The central part 52 is a part that mainly stores the contents of the stationary induction device 1. The insulating oil is supplied from the upper part 50 and the lower part 54 to the radiator 10 connected via the pipe 12 and circulates to cool the stationary induction device 1.

  The stationary induction device tank 20 includes a pair of side plates 22 facing left and right in parallel. The side plate 22 constitutes a side portion of the stationary induction device tank 20. The side plate 22 is roughly divided into three parts, which are an upper part 50, a central part 52, and a lower part 54 from the top. The side plate 22 is formed of a single plate in which an upper part 50, a central part 52, and a lower part 54 are integrally formed.

  As shown in FIG. 3, in the side plate 22, the regions of the upper portion 50, the central portion 52, and the lower portion 54 are rectangular. The front / rear length L1 of the upper part 50 of the side plate 22 is configured to be longer than the front / rear length L2 of the central portion 52 of the stationary induction device tank 20. The front-rear length L3 of the lower portion 54 of the side plate 22 is configured to be longer than the front-rear length L2 of the central portion 52 of the stationary induction device tank 20. The front-rear length L1 of the upper part 50 of the side plate 22 and the front-rear length L3 of the lower part 54 may be different.

  The pair of left and right side plates 22 are connected to each other by a vertically long rectangular front plate 24 and a pair of upper swash plates 30 located on the left and right of the front plate 24 in the upper portion 50 of the front portion of the stationary induction device tank 20. Has been. The front plate 24 is disposed substantially perpendicular to the side plate 22. The upper swash plate 30 protrudes forward from the surface of the front plate 24 and is connected to the side plate 22 so as to form an acute angle. The front plate 24 includes an upper part 50, a central part 52, and a lower part 54 that are integrally formed, and are constituted by a single rectangular plate that extends vertically with a longitudinal direction.

  The pair of left and right side plates 22 are connected to each other at the rear upper portion 50 of the stationary induction device tank 20 by a rear plate 26 and a pair of upper swash plates 30 positioned on the left and right sides of the rear plate 26. The back plate 26 is disposed substantially perpendicular to the side plate 22. The upper swash plate 30 protrudes rearward from the surface of the back plate 26 and is connected to the side plate 22 so as to form an acute angle. The back plate 26 is composed of an upper part 50, a central part 52, and a lower part 54, which are integrally formed, and are formed of a single rectangular plate extending vertically with a longitudinal direction.

  It should be noted that the upper portion 50, the central portion 52, and the lower portion 54 of the side plate 22, the front plate 24, and the rear plate 26 do not have to be configured to be exactly the same plane, and do not necessarily be the same plane. It may be configured.

  As a result, the cross-sectional shape of the stationary induction device tank 20 in the upper portion 50 is such that, as shown in FIG. 5 (a), four corners are larger than 180 degrees, and the other four corners are acute angles. It is an inverted octagon. That is, in the cross section, the front plate 24 and the back plate 26 become concave portions, and the apex P formed by the upper swash plate 30 and the side plate 22 arranged on the left and right of the front plate 24 or the back plate 26 protrudes in the front-rear direction. The internal angle formed by the front plate 24 and the back plate 26 and the upper swash plate 30 is larger than 180 degrees, and the internal angle formed by the upper swash plate 30 and the side plate 22 is an inverted octagon. The upper part 50 of the stationary induction device tank 20 is a prism formed by this inverted octagon.

  In the central portion 52, the pair of left and right side plates 22 are connected at the front by a front plate 24 and a pair of central swash plates 32 positioned on the left and right of the front plate 24, and at the rear, a back plate 26 and a back plate. 26 are connected by a pair of central swash plates 32 positioned on the left and right sides of 26. The central swash plate 32 is connected so as to recede in the front-rear direction from the surfaces of the front plate 24 and the back plate 26, that is, bend in the central direction so as to form an obtuse angle with the side plate 22. As shown in FIG. 5B, the central portion 52 is an octagon in which eight corners which are internal angles of the cross-sectional shape are obtuse. A content 60 of the stationary guidance device 1 is disposed in the central portion 52 of the stationary guidance device tank 20. The central part 52 of the stationary induction device tank 20 is a prism formed by the octagon.

  On the bottom surface of the upper portion 50 and on the upper surface of the central portion 52, the front plate 24 and the back plate 26, the lower side 30 a of the upper swash plate 30, and the upper side 32 a of the central swash plate 32 are located at the boundary between the upper portion 50 and the central portion 52. The upper horizontal plate 36 is connected to the lower side 22a of the side plate 22 projecting forward and backward from the central swash plate 32 so that the lower side plate 36 covers the lower surface. That is, the upper horizontal plate 36 is connected to the lower portion of the boundary portion between the upper portion 50 and the central portion 52 and located outside the central portion 52 so as to form a bottom surface.

  The pair of left and right side plates 22 are connected to each other at a front lower portion 54 by a front plate 24 and a pair of lower swash plates 34 positioned on the left and right of the front plate 24. The lower swash plate 34 protrudes forward from the surface of the front plate 24 and is connected to the side plate 22 so as to form an acute angle. The pair of left and right side plates 22 are connected to each other at a lower portion 54 of the rear portion by a back plate 26 and a pair of lower swash plates 34 located on the left and right of the back plate 26.

  The lower swash plate 34 protrudes rearward from the surface of the back plate 26 and is connected to the side plate 22 so as to form an acute angle. As a result, the cross-sectional shape of the stationary induction device tank 20 in the lower portion 54 is such that, as shown in FIG. 5C, the four inner corners are larger than 180 degrees, and the other four corners are acute angles. It is an inverted octagon. That is, the front plate 24 and the back plate 26 become concave portions, the internal angle formed by the front plate 24 and the back plate 26 and the lower swash plate 34 is larger than 180 degrees, and the internal angle formed by the lower swash plate 34 and the side plate 22 is an acute angle. It is an inverted octagon. The lower part 54 of the stationary induction device tank 20 is a prism formed by the inverted octagon. The inverted octagons of the upper part 50 and the lower part 54 have the same shape.

  Similar to the upper horizontal plate 36, the lower horizontal plate 38 is disposed at the boundary between the lower portion 54 and the central portion 52. That is, the front plate 24 and the back plate 26 located at the boundary between the lower portion 54 and the central portion 52, the upper side 34a of the lower swash plate 34, the lower side 32b of the central swash plate 32, and the lower portion 54 from the central swash plate 32 back and forth. The upper horizontal plate 36 is connected to the upper side 22b of the side plate 22 of the overhanging portion so that the upper surface of the portion of the lower portion 54 that protrudes forward and backward from the front plate 24, the back plate 26, and the central swash plate 32. It is installed so as to be a surface to be closed. The horizontal plates 36 and 38 are connected to a boundary portion between the lower portion 54 and the central portion 52 and located outside the central portion 52.

  For example, the upper horizontal plate 36, the front plate 24 and the rear plate 26, the lower side 30a of the upper swash plate 30, the upper side 32a of the central swash plate 32, and the lower side 22a of the side plate 22 protruding forward and backward from the central swash plate 32 are welded, for example. The connection is fixed by. The lower side plate 38, the front plate 24 and the back plate 26, the upper side 34a of the lower swash plate 34, the lower side 32b of the central swash plate 32, and the upper side 22b of the portion of the side plate 22 that protrudes forward and backward from the central swash plate 32 in the lower portion 54. Is fixedly connected by welding, for example.

  Thus, the stationary induction device tank 20 includes a three-dimensional structure composed of a single plate in which a pair of left and right side plates 22, a front plate 24, and a rear plate 26 extend vertically from the upper portion 50 to the lower portion 54. As a result, the structure has a strong three-dimensional strength and enhanced rigidity. Further, the horizontal plates 36 and 38 are connected and fixed to the side plate 22, the front plate 24, the back plate 26, the upper swash plate 30, the central swash plate 32, and the lower swash plate 34 in the horizontal direction. It has a structure with enhanced rigidity. That is, the horizontal plates 36 and 38 function as reinforcing plates connected in the horizontal direction.

  The stationary induction device tank 20 stores the contents 60 of the stationary induction device 1, that is, mainly the iron core 60a and the coil 60b wound around the outer periphery of the iron core 60a in the central portion 52. It is cooled and insulated by being immersed in insulating oil filled in the inside 20. As shown in FIG. 5 (b), the shape of the contents 60 schematically represents the shape of a round coil 60b in the cross section, and the round coil in the cross section represents the tank 20 for stationary induction equipment. An example is shown in which three are arranged in a straight line in the central portion 52 of the.

  The central portion 52 of the stationary induction device tank 20 is a prism having an octagonal shape in cross section, and a front plate 24, a back plate 26, and a side plate 22 which are surfaces constituting the octagonal prism shape, The coil 60b having a round cross section is disposed so as to surround the coil 60b so as to form a substantially tangent line with a predetermined interval.

  By arranging in this way, the stationary induction device tank 20 is shaped so that the contents 60 of the stationary induction device 1 are immersed in the insulating oil in the stationary induction device tank 20 and the stationary induction device tank 20 is insulated in the insulating oil. Can be configured to have a minimum volume necessary for circulation. That is, the above-described configuration can save the insulating oil used in the stationary induction device 1.

  On the other hand, the upper part 50 and the lower part 54 of the stationary induction device tank 20 are areas for connecting to the stationary induction device tank 20, that is, the plurality of radiators 10 arranged on the left and right of the stationary induction device 1 and the pipe 12. Become. The pipe 12 is for circulating the insulating oil in the stationary induction device tank 20 between the radiator 10 and the stationary induction device tank via the connection holes 40 provided in the upper part 50 and the lower part 54. 20 and the radiator 10 are connected.

  It is desirable to install as many radiators 10 as possible in order to release heat generated during operation of the stationary induction device 1. In the radiator 10, a plurality of radiators 10 are arranged side by side on the left and right of the stationary induction device 1 according to the amount of heat generated by the stationary induction device 1, and the pipe 12 is connected to the plurality of radiators 10 arranged in parallel. In addition, the front / rear length L1 of the upper part 50 and the front / rear length L3 of the lower part 54 of the side plate 22 may be long. In the embodiment, as shown in FIG. 2, an example is shown in which five radiators 10 are arranged on the left and right sides of the stationary induction device tank 20. In the embodiment, the upper portion 50 and the lower portion 54 of the stationary induction device tank 20 are configured to have an inverted octagonal cross-sectional shape. With this shape, the front and rear lengths of the side plate 22 that is the side portion of the stationary induction device tank 20 can be made longer, so that more radiators 10 can be installed.

  On the other hand, since the central part 52 is a part for storing the contents 60 of the stationary induction device 1, it is only necessary to store the contents 60 and to have a three-dimensional shape and a longitudinal length sufficient to circulate the internal insulating oil. . With this configuration, the amount of insulating oil in the stationary induction device tank 20 can be minimized. With the above configuration, the heat dissipation performance of the stationary induction device 1 can be improved while achieving oil saving.

  As described above, according to the stationary induction device tank 20 of the present embodiment, the configuration that allows the installation of many radiators 10 while reducing the amount of insulating oil to be used and minimizing the required amount. Since this can be achieved, oil saving can be achieved while improving the heat dissipation performance and cooling performance of the static induction device 1 configured using the same to improve reliability.

(Modification)
Modifications 1 and 2 are shown in FIGS. In the above embodiment, an example in which the cross-sectional shapes of the upper part 50 and the lower part 54 are inverted octagons has been shown. However, as shown in FIGS. 7 to 10, the front side and the rear side of the inverted octagons, Any one of the rear sides may be configured to have a rectangular box shape. 7 to 10 exemplify a configuration in which the upper parts 50a and 50b are modified, the present invention may be similarly applied to the lower part 54. That is, at least either the front side or the rear side of the upper part 50, 50a, 50b or the lower part 54 may be a rectangular box shape.

  FIG. 7 is a partial perspective view schematically showing the configuration of the upper part 50a of the stationary induction device tank 20 of the stationary induction device 1 according to the modification 1, and shows the middle part 52a. FIG. 8 is a cross-sectional view schematically showing the configuration of the upper part 50a.

  7 and 8 show an example in which both the front side and the rear side of the upper part 50a of the stationary induction device tank 20 are formed in a rectangular box shape. In this case, the cross-sectional shape of the upper part 50a is a rectangle having a longitudinal direction in the front-rear direction and four corners of approximately 90 degrees. The upper part 50a is comprised by the side plate 22, the front plate 24a, and the back plate 26a. The upper part 50a is a quadrangular prism constituted by this rectangle.

  FIG. 9 is a partial perspective view schematically showing the configuration of the upper part 50b of the stationary induction device tank 20 of the stationary induction device 1 according to the modified example 2, showing the middle part 52a halfway. FIG. 10 is a cross-sectional view schematically showing the configuration of the upper part 50b.

  9 and 10, the front side of the upper part 50a of the stationary induction device tank 20 has a rectangular box shape, and the rear side has a deformed hexagonal shape composed of two acute angles and two angles larger than 180 degrees as shown in FIG. An example is shown. In this case, the cross-sectional shape of the upper part 50a has a longitudinal direction in the front-rear direction and a shape having two corners of approximately 90 degrees in the front, the back plate 26 becomes a recess in the back, and is arranged on the left and right of the back plate 26. The apex P formed by the upper swash plate 30 and the side plate 22 protrudes in the front-rear direction, the inner angle formed by the back plate 26 and the upper swash plate 30 is greater than 180 degrees, and the upper swash plate 30 and the side plate 22 It has a shape in which the inner angle formed by the sharp angle. The upper part 50b is a prism formed by this hexagon.

  Similar to the above-described embodiment, in the modified example, the upper horizontal plate 36a is connected at the position of the boundary between the upper portions 50a, 50b and the central portion 52, thereby dividing the upper portion 50a and the central portion 52a. The upper horizontal plate 36a is a bottom surface at a part of the front side and the rear side of the upper part 50a. The structure of the center part 52 and the lower part 53 is the same as that of the above-mentioned embodiment. The upper horizontal plate 36a may protrude from the side plate 22 and the front plate 24a as shown in FIGS.

  In the two modified examples described above, the shape of the central portion 52 can be an octagonal shape in the cross-sectional view, and the front and rear length can be set large while minimizing the volume for storing the insulating oil. It is possible to achieve oil saving while improving the reliability of the stationary induction device 1. Moreover, the function of the attachment place, such as a bushing, can be given by making it a rectangular box shape.

In addition, although the upper part 50a, 50b was demonstrated in the modification, you may perform the same deformation | transformation about the lower part 54. FIG.
Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  For example, although the said embodiment illustrated and demonstrated the three-phase transformer as the stationary induction | guidance | derivation apparatus 1, it is not restricted to this. For example, a single phase transformer may be used. Moreover, although the transformer was illustrated and demonstrated as a static induction apparatus, it is not restricted to this, For example, you may apply to a reactor.

  Moreover, the structure of the plate member of the stationary induction device 1 described in the above-described embodiment is an example, and various changes can be made. For example, in the modified example, the horizontal plate 36a and the front plate 24a are illustrated as separate members, but are not limited to such a configuration. For example, if the horizontal plate 36a and the front plate 24a are not formed as separate members but have an integrated configuration in which a single plate is bent, the shape similar to that of the static induction device 1 described above can be realized. It goes without saying that the plate configuration to be connected may be changed.

  In the drawings, 1 is a static induction device, 10 is a radiator, 12 is a pipe, 20 is a tank for static induction device, 22 is a side plate (side portion), 24 is a front plate, 26 is a back plate, and 30 is an upper swash plate. , 32 is a central swash plate, 34 is a lower swash plate, 36, 36a and 38 are horizontal plates, 40 is a connection hole, 50, 50a and 50b are upper portions, 52 is a central portion, 54 is a lower portion, and 60 is a stationary induction device. Indicates the contents.

Claims (6)

It has an upper part, a central part, and a lower part,
The central portion is an octagonal prism in cross section,
The upper part or the lower part is an inverted octagonal prism in cross section,
The stationary induction device tank is configured such that the front and rear lengths of the upper and lower side portions are longer than the front and rear lengths of the central portion.   The tank for stationary induction equipment according to claim 1, wherein at least either the front side or the rear side of the upper part or the lower part has a rectangular box shape.   The two side surfaces that are surfaces constituting the stationary induction device tank are a single plate in which the upper portion, the central portion, and the lower portion are integrally formed, and are arranged in parallel. The tank for stationary induction equipment described.   Any one of the surfaces constituting the stationary induction device tank and having an angle substantially perpendicular to the side surface portion is a single plate in which the upper portion, the central portion, and the lower portion are integrally formed. The tank for stationary induction equipment according to any one of claims 1 to 3.   A horizontal plate connected in a horizontal direction is connected to either the boundary between the upper part and the central part or the boundary part between the lower part and the central part, so that either the upper part, the central part, or the lower part is connected. The tank for stationary induction equipment according to any one of claims 1 to 4, wherein the tank is stationary. A heat radiator connected via a pipe is provided on a side surface of the stationary induction device tank, and connection holes for the pipe are provided on the upper and lower sides of the side surface portion of the stationary induction device tank. The tank for stationary induction equipment according to any one of 1 to 5.

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