JP2013207129A - Transformer and manufacturing method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve assembly while a single article size tolerance and an assembly error are absorbed.SOLUTION: A transformer includes: a transformer body 123 which incorporates a transformer coil for generating an induction field by electrification and a laminated iron core in a tank; pipings 5, 6 and 9 and a radiator 7, in which an insulation medium which insulates and cools the transformer coil circulates through the tank of the transformer body; and a bushing 11 for maintaining insulation between an external lead wire of the transformer body and the tank of the transformer body. Coupling faces of coupling on at least one end side of transformer components 81 and 82 coupled with the other component at both ends make an almost vertical direction or almost horizontal direction to a transformer installation reference face, and a coupling section having the coupling face making the almost vertical direction is a relatively movable structure in two directions of Z axis-Y axis or two directions of Z axis-X axis. The coupling section having the coupling face making the almost horizontal direction is a relatively movable structure in two directions of X axis-Y axis.

Description

  According to the present invention, a transformer body for generating an induction magnetic field by energization and a transformer body in which a laminated iron core is built in a tank, and an insulating medium for insulating and cooling the transformer coil circulate through the tank of the transformer body. The present invention relates to a transformer and a method for manufacturing a transformer, which are provided with a bushing for maintaining insulation between piping and a radiator, and an external lead wire of the transformer body and the tank of the transformer body.

  Conventionally, when a transformer, which is a large structure, is assembled in a factory or installed locally, a lot of time has been spent on assembly due to part dimensional tolerances and dimensional variations due to assembly. For this reason, it is possible to improve the dimensional accuracy by machining individual parts, or to unitize the parts that have been assembled with multiple parts in advance, and reduce the number of joints during on-site assembly. It uses equipment that can be moved, positioned and mounted to reduce on-site assembly time. However, when absorbing the dimensional effect of the foundation in the factory or at the site, or when assembling the joint with the existing equipment, it is still necessary to create a joint part by a temporary assembly process that presupposes dimensional correction of the attached part. This “in-place work” (hereinafter referred to as “in-place work”) was performed. (See Patent Document 1)

In addition, in the case of transformers for power generation facilities located in mountainous areas such as hydroelectric power stations, there are restrictions on the size and weight during transportation in the state where three phases, U phase, V phase, and W phase are assembled, It may not be possible to transport as it is, and after dividing it into U phase, V phase, and W phase, the central tank and upper tank that make up the transformer body and each coupling duct are unitized and each unit is assembled at the site assembly Transformers have also been developed on the premise of split transportation so that the joint work is carried out only at the joints. (See Patent Document 2)

JP-A-9-180944 (2 pages 78 to 3 pages, 3 lines, FIG. 1) Japanese Patent No. 3183840 (page 2, lines 72-86, FIG. 1)

  Although it is possible to perform machining to improve the accuracy of individual parts for the purpose of improving assemblability, it is necessary to introduce large-scale machining equipment, resulting in significant capital investment and manufacturing costs. . Even if the assembly process at the site can be reduced by unitizing a plurality of joint parts in advance, much time is still spent in the assembly at the factory. Even if it is necessary for divided transportation, such as for hydroelectric power plants, the assembly man-hours are not reduced because they are assembled and tested in the factory. Not only that, the work period is increased because the number of processes increases, such as the disassembly work after the test. In addition, the construction period is further increased because the parts are reassembled at the installation site after being divided for transportation.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to enable assembly while absorbing single-unit dimensional tolerances and assembly errors.

In the transformer according to the present invention, a transformer body for generating an induction magnetic field by energization and a transformer body in which a laminated iron core is built in a tank, and an insulating medium for insulating and cooling the transformer coil are the tank of the transformer body. At least one end of a transformer component having a pipe and a radiator circulating through the inside, and a bushing for maintaining insulation between the external lead wire of the transformer body and the tank of the transformer body, and coupled to other parts at both ends The coupling surface of the coupling on the side forms a substantially vertical direction or a substantially horizontal direction with respect to the transformer installation reference plane, and the coupling portion having a coupling surface that forms the substantially vertical direction is in two directions of Z axis-Y axis or Z axis -A X-axis two-direction relative movable structure, wherein the coupling portion having a substantially horizontal coupling surface is a X-axis-Y-axis two-direction relative movable structure. In a vessel That.

  The transformer manufacturing method according to the present invention includes: a transformer coil that generates an induced magnetic field by energization; a transformer body that includes a laminated iron core in a tank; and an insulating medium that insulates and cools the transformer coil. Transformer including a pipe and a radiator circulating through the tank of the transformer body, and a bushing for maintaining insulation between the external lead wire of the transformer body and the tank of the transformer body, and coupled to other parts at both ends The coupling surface of the coupling on at least one end side of the component part is substantially vertical or substantially horizontal with respect to the transformer installation reference plane, and the coupling portion having the coupling surface forming the substantially vertical direction is a Z-axis-Y-axis. It is a relative movable structure in two directions, or two directions of Z-axis and X-axis, and the coupling portion having the substantially horizontal coupling surface is a relative movable structure in two directions of X-axis and Y-axis. Special A method for manufacturing a transformer, characterized in that after the assembly of the transformer body, the coupling of the one end of the transformer component to the transformer body is performed. .

  According to the present invention, a transformer body for generating an induction magnetic field by energization and a transformer body in which a laminated iron core is built in a tank, and an insulating medium for insulating and cooling the transformer coil circulate through the tank of the transformer body. The coupling on at least one end side of the transformer component having a pipe and a radiator, and a bushing for maintaining insulation between the external lead wire of the transformer body and the tank of the transformer body, and coupled to other parts at both ends The coupling surface is substantially vertical or substantially horizontal with respect to the transformer installation reference plane, and the coupling portion having the coupling surface that forms the substantially vertical direction is in two directions of Z axis-Y axis or Z axis-X axis. Since it is a two-way relative movable structure and the joint portion having the substantially horizontal joint surface is a two-way relative movable structure of the X-axis and Y-axis, it absorbs dimensional tolerances and assembly errors. There is an advantage of being able to allow the assembly of the while.

  According to the present invention, a transformer body for generating an induction magnetic field by energization and a transformer body in which a laminated iron core is built in a tank, and an insulating medium for insulating and cooling the transformer coil circulate through the tank of the transformer body. The coupling on at least one end side of the transformer component having a pipe and a radiator, and a bushing for maintaining insulation between the external lead wire of the transformer body and the tank of the transformer body, and coupled to other parts at both ends The coupling surface is substantially vertical or substantially horizontal with respect to the transformer installation reference plane, and the coupling portion having the coupling surface that forms the substantially vertical direction is in two directions of Z axis-Y axis or Z axis-X axis. A method of manufacturing a transformer, characterized in that it is a two-way relative movable structure, and the joint portion having a substantially horizontal joint surface is a two-direction relative movable structure of X-axis and Y-axis. In Thus, after the assembly of the transformer body, the coupling of the one end of the transformer component to the transformer body is performed, so that it is possible to assemble while absorbing single-unit dimensional tolerances and assembly errors. effective.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Embodiment 1 of this invention, and is the schematic of an example of the whole transformer external appearance, (a) is a front view, (b) is a side view. It is a figure which shows Embodiment 1 of this invention, and shows the external appearance of an example of the principal part, (a) is a perspective view, (b) is a side view. It is a figure which shows Embodiment 1 of this invention, and is a perspective view which shows an example of the lower oil feeding pipe which is the insulating oil piping in FIG.1 and FIG.2. It is a figure which shows Embodiment 2 of this invention, and is a perspective view which shows an example of the structure of a lower header support metal and its vicinity. It is a figure which shows Embodiment 3 of this invention, and is a perspective view which shows the other example of a lower header support metal. It is a figure which shows Embodiment 3 of this invention, and is a perspective view which shows the example of the coupling | bonding state of the division | segmentation support metal coupling | bond part in FIG. It is a figure which shows Embodiment 4 of this invention, and is a perspective view which shows the other example of the division | segmentation support metal coupling | bond part illustrated in FIG. It is a figure which shows Embodiment 5 of this invention, and is a perspective view which shows the other example of a lower header support metal and the structure of the vicinity. It is a figure which shows Embodiment 8 of this invention, and is a perspective view which shows an example of a bushing case coupling | bonding flange part. It is a figure which shows Embodiment 8 of this invention, and is a perspective view which shows an example of the coupling structure of a bushing case coupling | bonding flange part and a bushing case. It is a figure which shows Embodiment 9 of this invention, and is a perspective view which shows the other example of the coupling structure of a bushing case coupling | bonding flange part and a bushing case. It is a perspective view which shows the lower oil feeding pipe of the conventional transformer. It is a perspective view which shows the other example of the lower oil-feeding pipe of the conventional transformer. It is a perspective view which shows the lower header support metal of the conventional transformer, and the structure of the vicinity. It is a perspective view which shows the lower header support metal of the conventional transformer. It is a perspective view which shows the coupling structure of the bushing case coupling | bonding flange part and bushing case of the conventional transformer. It is a perspective view which shows the coupling structure of the bushing case coupling | bonding flange part and bushing case by the current welding of the conventional transformer. It is a perspective view which shows the other example of the coupling structure of the bushing case coupling | bonding flange part and bushing case by the current welding of the conventional transformer.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to FIGS. 1A and 1B are views showing Embodiment 1 of the present invention, and are schematic views of an example of the overall appearance of a transformer. FIG. 1A is a front view, and FIG. 1B is a side view. FIGS. 2A and 2B are views showing Embodiment 1 of the present invention, showing an external appearance of an example of a main part, wherein FIG. 2A is a perspective view and FIG. 2B is a side view. 3 is a diagram showing Embodiment 1 of the present invention, and is a perspective view showing an example of a lower oil feed pipe which is an insulating oil pipe in FIGS. 1 and 2. FIG.

  In FIG. 1, it comprises a lower tank 1, a middle tank 2, an upper tank 3 containing a lead wiring, and an MR tank 4 containing a tap changer. And located between the lower header pipe 5 and the upper header pipe 6 and the lower header 5 and the upper header 6 provided to circulate the insulating oil for cooling the coil section and the iron core section. A plurality of radiator sections 7 are attached. The lower tank 1 and the lower header pipe 5 are connected by a plurality of lower oil supply pipes 9, and the upper tank 3 and the upper header pipe 6 are connected by a plurality of upper oil supply pipes 16 so that insulating oil circulates. Yes.

The lower header support 8 is provided to receive the load of the lower header 5 and the radiator section 7, and has sufficient support strength by being coupled to the lower tank side. The bushing case 10 supports the bushing 11 and is used to maintain insulation between the lead wire of the transformer and the external case. The conservator 12 is provided for the hygroscopic action of the insulating oil through the internal hygroscopic respirator, and the air vent pipe 13 is provided so that bubbles generated in each place gather in the conservator through the pipe. The conservator support 14 receives the load of the conservator located at the top of the transformer and has a role to support the upper tank. The inter-header support metal 15 is located between the lower header 5 and the upper header 6 and further increases the rigidity by connecting them.

FIG. 2 shows a lower tank 1, a middle tank 2, a lower header pipe 5, a split type lower header support A (81), a split type lower header support B (82), and a lower oil feed pipe 9 connecting part. FIG. The lower oil feed pipe 9 needs to connect the lower tank 1 and the lower header pipe 5 in a watertight state. Conventionally, as shown in FIG. 12, two bent pipes of a pipe 91 and a pipe 92 are connected to a pipe flange A1 (91a). And the pipe flange B2 (92b). Further, as shown in FIG. 4, since the pipe flange B1 (91b) on the lower tank side of the pipe 91 and the lower header side pipe flange A2 (92a) of the pipe 92 are not on the same XZ plane (in the figure, the ΔY dimension is not 0) ), The bending shapes of the pipes 91 and 92 are complicated, and after pre-assembly, welding was performed (W in the drawing) at the connecting flange portion 92b. Lower tank 1 and middle tank 2
And the upper tank 3 constitute a transformer body 123.

  On the other hand, in the transformer of the present invention, by changing the oil feed pipe coupling position of the lower tank and the oil feed pipe coupling position of the lower header 5 so as to be arranged on the same XZ plane, the transformer installation surface as shown in FIG. On the other hand, by making it possible to couple the lower tank 1 and the lower header pipe 5 with a single pipe 9 having a coupling flange surface in a substantially vertical direction and a substantially horizontal direction, provisional assembly work can be reduced and the manufacturing period can be shortened.

  In FIG. 3, by changing the oil feed pipe coupling position of the lower tank and the oil feed pipe coupling position of the lower header so as to be arranged on the same XZ plane, as shown in FIG. The lower tank 1 and the lower header pipe 5 are connected only by the pipe 9 having the connecting flange surface in the substantially horizontal direction. Thereby, the joint location of piping can be reduced, the risk of oil leakage from the joint portion can be avoided, the assembly can be facilitated, and the assembly work period can be shortened.

Embodiment 2. FIG.
A second embodiment of the present invention will be described below with reference to FIG. 4 which is a perspective view showing an example of the structure of the lower header support gold and the vicinity thereof.
In FIG. 4, a split type lower header support A (81), a split type lower header support B (82), a lower tank support metal seat 18a having an ellipse 18ah adjustable in the Y-axis direction, and a screw hole. It has a middle tank support metal washer 19a, and is first coupled to the lower oil feed pipe with the lower header 5 held in place. In this state, it attaches to the middle tank support metal washer 19a. At this time, the hole 51bh provided in the sheet metal seat 51b fastened to the middle tank support metal seat 19a of the lower header 5 is made sufficiently large with respect to the used bolt, and by using a washer with a large seating surface, the Y axis direction and the Z axis direction The position can be adjusted.

Next, the split type lower header support A (81) is attached to the lower tank support metal seat 18a, and the position in the Y-axis direction is adjusted in the temporarily fixed state. Next, the split-type lower header support gold B (82) is attached to the split-type lower header support gold A (81), and the screw holes 81ah and 82ah of the mounting seats 81a and 82a have an oval shape. Therefore, it is possible to absorb the deviation in the biaxial direction of the plane during assembly, and the position of the lower header 5 with respect to the mounting seat 51a and the radiator mounting hole 27 can be easily adjusted, so that the manufacturing period can be shortened.

Embodiment 3 FIG.
A third embodiment of the present invention will be described below with reference to FIGS. FIG. 5 is a perspective view showing another example of the lower header support gold, and FIG. 6 is a perspective view showing an example of a combined state of the divided support gold connecting portions in FIG.
FIG. 5 schematically shows a detailed view when the split type lower header support gold B (82) is attached to the split type lower header support gold A (81). Since the major axis direction of the bolt fastening hole P of the mounting seat 81a and the major axis direction of the bolt fastening hole Q of the mounting seat 82a are different from each other, the horizontal adjustment region is expanded.

In FIG. 5, since it has an oval shape having a major axis in the Y-axis direction and the X-axis direction, it is possible to absorb the deviation in the two XY plane directions during assembly. This eliminates the need for modification of the component dimensions due to the on-site operation and machining for increasing the accuracy of the components, so that the manufacture of the components and the assembly operations thereof are facilitated, and the work period can be shortened. Conventionally, as shown in FIG. 14, since there was no support metal split configuration of the present application, the joint operation was performed at the portion indicated by the welded portion W in FIG. 15.

Embodiment 4 FIG.
The fourth embodiment of the present invention will be described below with reference to FIG. 7 which is a perspective view showing another example of the divided support gold joint portion illustrated in FIG. In the third embodiment, the mounting seat 81a and the mounting seat 82a after the position adjustment often have deviations ΔX2 and ΔY2 at the ends as shown in FIG. In this case, there is no problem in strength that supports the load of the header or radiator, but there is a problem in appearance.

  Therefore, in consideration of the adjustment range by the ellipse, the size of the mounting seat 82a is made smaller than the size of the mounting seat 81a, and the design as shown in 82b in FIG. It changed so that it might fit in the attachment seat 81a. Thereby, since both the strength and the external appearance are satisfied and the dimensional adjustment is easy, the construction period can be shortened similarly to the transformer shown in the first to fourth embodiments.

Embodiment 5 FIG.
Embodiment 5 of the present invention will be described below with reference to FIG. 8, which is a perspective view showing another example of the lower header support gold and the structure in the vicinity thereof.
In FIG. 8, a split spacer A (20a) to be inserted between the joint seat 81a of the split type lower header support metal A (81) and the joint seat 82a of the split type lower header support metal B (82), and the Y axis A split tank spacer B (20b) inserted between a lower tank support metal seat 18a having an ellipse adjustable in direction and a lower tank side coupling seat 81b of the lower header support metal A (81), and a middle tank having a screw hole Split spacer C (20c) inserted between support metal seat 19a and middle tank side mounting seat 51b of lower header 5, screw hole provided in lower header support metal B (82), and lower header support metal of lower header 5 A split spacer D (20d) inserted between the coupling seats 51a coupled to the B (82) side is shown.

  After adjusting the position of each component, insert the split spacers into the gaps between the mounting seats that are generated when the bolts are tightened. It can be used as a bill. As a result, the current work can be reduced and the construction period can be shortened.

Embodiment 6 FIG.
With the transformer structure of the present invention described in the first to fifth embodiments, each part is subjected to rust-proof coating after production and delivered directly to the assembly process. In the assembly process, while assembling each part to the transformer body, adjust the mounting position with the oblong holes of the joint part provided in the horizontal direction and the joint part provided in the vertical direction as necessary, and assemble in the joint part of multiple parts It was easy. According to this manufacturing method, the temporary assembly process for the current work can be omitted, and the manufacturing period can be shortened. Conventionally, since the assembly method using the adjustment structure of the present application is not performed, it is disassembled after the on-site work including the temporary assembly process, and after applying anti-rust coating to each part, the main assembly is performed in the assembly process. It was.

Embodiment 7 FIG.
In the method for manufacturing a transformer according to the present invention described in the sixth embodiment, the spacer described in the fifth embodiment is used in the joint portion of the divided support metal separately from the adjustment in the joint surface by the ellipse. By doing so, it is also possible to perform dimension adjustment in the direction perpendicular to the joint surface. Furthermore, by dividing this spacer at the center as shown in the spacers 20a to 20d shown in FIG. 8, it is possible to easily insert the spacer through the gap of the joint surface even after the bolt is tightened, and a plurality of types of plate thickness spacers are prepared in advance. By doing so, it is possible to further shorten the manufacturing period while maintaining a stable fastening state.

Embodiment 8 FIG.
The eighth embodiment of the present invention will be described below with reference to FIGS. FIG. 9 is a perspective view showing an example of the bushing case coupling flange portion, and FIG. 10 is a perspective view showing an example of a coupling structure of the bushing case coupling flange portion and the bushing case.
FIG. 9 shows the bushing case coupling portion of the present invention. The bushing case coupling pipe (211) welded to the ceiling of the upper tank 3 is longer than the conventional bushing case coupling pipe (21) (h in the figure), and the reinforcing plate A (231) is the bushing case coupling pipe. By welding at a low position (211), the flange inclination of the bushing case coupling flange (22) that appears after welding of the bushing case coupling pipe (211) and the reinforcing plate A (231) to the upper tank 3 is heated by a burner or the like. The position accuracy of the bushing case joint is improved. At this time, the distance between the reinforcing plate A (231) and the bushing case coupling flange is set to at least 50 mm in order to effectively use the shrinking action of iron by heating.

  Furthermore, as shown in FIG. 10, holes capable of bolt fastening are provided in each of the reinforcing plate A (231) and the reinforcing plate B (232), and the reinforcing plates are fastened together using the connecting plate 25 to form a strength member. At this time, the bolt fastening hole provided in the coupling plate 25 is made larger than the bolt fastening hole originally provided in the reinforcing plate A (231) and the reinforcing plate B (232), thereby making it easy to adjust the dimensions during fastening. It was. With this configuration, the assembly period can be shortened by facilitating assembly at a joint portion of a plurality of parts, without preliminarily assembling parts in advance and adjusting the dimensions of the parts together and without spending expensive processing costs due to machining. Further, when the connecting plate 25 is bolted to the reinforcing plate A (231) and the reinforcing plate B (232) as necessary, a more stable fastening state can be maintained by using a washer. Conventionally, as shown in FIG. 16, since there was no configuration of the present application, welding by the present work of FIGS. 17 and 18 was performed.

Embodiment 9 FIG.
A ninth embodiment of the present invention will be described below with reference to FIG. 11 which is a perspective view showing another example of a coupling structure between a bushing case coupling flange portion and a bushing case.
Due to the structure of the bushing case mounting portion of the present invention described in the eighth embodiment, the bushing case is subjected to anticorrosion coating after production and directly delivered to the assembly process.
In the assembly process, as shown in FIGS. 9 and 10, after the bushing case is bolted to the bushing case mounting flange 22 of the upper tank, the reinforcing plate welded to the upper tank side and the reinforcing plate welded to the bushing case side are combined. The plate 25 is bolted. At this time, a dimensional error due to parts and assembly is absorbed by having an adjustment allowance due to a difference in diameter between the bolt fastening hole and the mounting bolt provided in each. In that case, as illustrated in FIG. 11, stable bolt fastening is enabled by using a washer 28 having a plurality of thicknesses as necessary. According to this manufacturing method, the temporary assembly process for the current work can be omitted, and the manufacturing period can be shortened.

When this invention and the above-described first to ninth embodiments are summarized, it can be said that there are the following characteristics.
Feature 1: In the transformer and the manufacturing method thereof according to the present invention, in an assembly part having a plurality of joint parts, an adjustment mechanism that absorbs an assembly dimension error is provided in the fastening / joining part, and the part shape change associated therewith is performed. Thus, it is possible to assemble while absorbing the dimensional tolerance and assembly error of a single product.
Feature 2: According to the present invention, it is possible to shorten the manufacturing period by increasing the part production cost and reducing the part making work by the on-site work and facilitating the assembly of the joint parts of a plurality of parts. .

Feature 3: a wound coil and a laminated iron core that generate an induced magnetic field by energization,
Lead wiring electrically connected to the winding coil;
A tap changer for switching the connection of the winding coil;
A transformer body formed by a plurality of substantially box-shaped tank parts that contain the winding coil, laminated iron core, lead wiring, and tap changer, and retain insulation.
An oil pipe and a radiator for circulating insulating oil for insulating and cooling the coil to the transformer body, a place connected to the oil pipe and the radiator, and a place connected to the transformer body, and the load of the oil pipe and the radiator A support metal that supports the main body tank side,
A bushing and a bushing case for maintaining insulation between the external lead wire of the transformer and the outer case of the transformer;
A conservator for absorbing moisture of the insulating oil;
In the transformer provided with an air vent pipe that serves to escape the internal air when lubricating the insulation,
The transformer is characterized in that the joint surfaces of the component parts are arranged in a substantially vertical direction and a substantially horizontal direction with respect to an installation reference plane of the transformer,
With this configuration, it is possible to easily assemble a plurality of parts in a joint portion without preliminarily assembling parts in advance and correcting the dimensions of the parts in accordance with the actual product and without costly machining costs.

Feature 4: In the feature 3, the oil pipe and the radiator are connected to the transformer main body and the transformer main body, the support pipe for supporting the load of the oil pipe and the radiator on the main body tank side is divided into a plurality of parts, It is a transformer characterized by providing a coupling seat with an oval in the division part,
As a result, it is possible to easily assemble a plurality of parts in a joint portion without preliminarily assembling parts in advance and correcting the dimensions of the parts in accordance with the actual product and without spending expensive processing costs due to machining.
Feature 5: In the feature 4, the elongated hole provided in the coupling seat constituting the coupling portion of the support metal divided into a plurality of parts is coupled to the support metal with respect to the elongated hole of the coupling seat of the one support metal. This is a transformer characterized in that the long holes of the support metal are formed at a substantially right angle, which makes it easy to adjust in two axes among the dimensional errors that occur during assembly, and pre-assembles in advance. It is possible to easily assemble a plurality of parts in a joint portion without spending expensive processing costs due to component size correction in actual products and machining.

Feature 6: In the feature 4, in the coupling seat portion of the support metal which has a portion coupled to the oil pipe and the radiator and a portion coupled to the transformer main body, and supports the load of the oil piping and the radiator on the main body tank side, Transformer characterized in that the size of one seat is smaller than the size of the other seat, which not only facilitates assembly in the joint part of multiple parts, but also makes it difficult to notice the deviation in appearance .
Feature 7: In the feature 4, the oil pipe and the radiator are connected to the transformer main body and the transformer main body, and the support pipe for supporting the load of the oil pipe and the radiator on the main body tank side is divided into a plurality of parts. In the coupling seat portion of the support metal provided with a coupling seat having an ellipse in the divided portion, it is formed by a plate of the same size as the coupling seat between the coupling seats of the divided support metal, and provided in the coupling seat. This transformer has a spacer with a long hole that has the same shape as the long hole at the position corresponding to the long hole, making it easy to adjust the dimensions in the direction perpendicular to the coupling seating surface and shortening the work period. Can be planned.

Feature 8: In the feature 7, between the divided support metal coupling seats, a plate having substantially the same size as the coupling seat is formed, and is substantially the same as the previous elongated hole at a position corresponding to the elongated hole provided in the coupling seat. A spacer provided with a long hole to be shaped is a transformer that is divided into a plurality of parts in the direction substantially perpendicular to the longitudinal direction of the long hole in the vicinity of the center thereof. It is easy to adjust the dimensions and shorten the construction period.

  Feature 9: In the feature 3, in the bushing and the bushing case portion for maintaining insulation between the external lead wire of the transformer and the transformer outer case, the distance between the bushing case coupling flange of the bushing case coupling pipe of the upper tank and the reinforcing plate is at least 50 mm. Bolt connection holes are provided in each of the reinforcing plate welded to the bushing case connecting pipe and the reinforcing plate welded to the bushing case, and the connecting plate for fastening and reinforcing the bushing case connecting pipe and the bushing case is provided. With this configuration, it is possible to easily assemble multiple parts in a jointed part without preliminarily assembling parts in advance and correcting the dimensions of the parts according to the actual product, and without expensive processing costs due to machining. be able to.

Feature 10: a wound coil and a laminated iron core that generate an induced magnetic field by energization;
Lead wiring electrically connected to the winding coil;
A tap changer for switching the connection of the winding coil;
A transformer body formed by a plurality of substantially box-shaped tank parts that contain the winding coil, laminated iron core, lead wiring, and tap changer, and retain insulation.
An oil pipe and a radiator for circulating insulating oil for insulating and cooling the coil to the transformer body, a place connected to the oil pipe and the radiator, and a place connected to the transformer body, and the load of the oil pipe and the radiator A support metal that supports the main body tank side,
A bushing and a bushing case for maintaining insulation between the external lead wire of the transformer and the outer case of the transformer;
A conservator for absorbing moisture of the insulating oil;
In a transformer provided with an air vent pipe that escapes internal air when lubricating the insulation,
A transformer manufacturing method characterized in that individual parts are fastened through fastening members that absorb variations in assembly dimensions at joint surfaces provided in a substantially vertical direction and a substantially horizontal direction as a reference for a transformer installation surface. With this, it is possible to easily assemble in a joint part of a plurality of parts and to shorten the work period without preliminarily assembling parts in advance and correcting the dimensions of the parts in accordance with the actual product and without spending expensive processing costs due to machining.

Feature 11: In the feature 10, the oil pipe and the radiator are connected to the transformer main body and the transformer main body, the support pipe for supporting the load of the oil pipe and the radiator on the main body tank side is divided into a plurality of parts, A transformer characterized in that a spacer having a long hole is disposed in a joint seat portion of a support metal provided with a joint seat having an ellipse in the divided portion, and the support metal divided through the long hole is bolted. This makes it easy to adjust the dimension in the direction perpendicular to the coupling seating surface, and to shorten the work period.
Feature 12: In the feature 11, the oil pipe and the radiator are connected to the transformer main body and the transformer main body, the support pipe for supporting the load of the oil pipe and the radiator on the main body tank side is divided into a plurality of parts, A spacer that is divided into a plurality of spacers in the direction substantially perpendicular to the longitudinal direction of the elongated hole in the vicinity of the center of the coupling seat of the support metal provided with a coupling seat having an ellipse in the divided portion, after the bolt fastening word, The transformer manufacturing method is characterized in that the transformer is inserted through the gap between the coupling seats. This makes it possible to easily adjust the dimensions in the direction perpendicular to the coupling seat surface and shorten the construction period.

Feature 13: A method of manufacturing a transformer according to feature 9, wherein a reinforcing hole welded to the bushing case connecting pipe and a reinforcing plate welded to the bushing case are each provided with a connecting hole and bolted by the connecting plate. As a result, it is possible to easily assemble a plurality of parts in a joint portion without preliminarily assembling parts in advance and correcting the dimensions of the parts in accordance with the actual product and without spending expensive processing costs due to machining.

  Feature 14: Transformer coil for generating an induction magnetic field by energization and a transformer main body in which a laminated iron core is built in a tank, and a piping through which an insulating medium for insulating and cooling the transformer coil circulates in the tank of the transformer main body And a radiator, and a bushing for maintaining insulation between the external lead wire of the transformer body and the tank of the transformer body, and the coupling of at least one end side of the transformer component that is coupled to other parts at both ends. The coupling surface has a substantially vertical direction or a substantially horizontal direction with respect to the transformer installation reference plane, and the coupling portion having a coupling surface that forms the substantially vertical direction has two directions of Z axis-Y axis or 2 of Z axis-X axis. It is a relative movable structure of a direction, The coupling | bond part which has the coupling surface which makes the said substantially horizontal direction is a relative movable structure of 2 directions of X-axis-Y-axis, It is a transformer characterized by the above-mentioned.

Feature 15: In the feature 14, the transformer component is a support for supporting the load of the piping and the radiator on the tank side of the transformer body, and the tank of the transformer body of the support The joint surface of the joint portion is substantially perpendicular to the transformer installation reference surface, and the joint portion has a relative movable structure in two directions of Z axis-Y axis or two directions of Z axis-X axis. It is a transformer characterized by being.
Feature 16: The transformer according to the feature 15, wherein the relatively movable structure is a structure in which a long hole through which a coupling bolt is inserted is provided in the coupling portion.
Feature 17: In the feature 15, the relative movable structure is such that the diameter of the hole through which the coupling bolt is inserted is larger than the diameter of the coupling bolt to allow the relative movement. This is a transformer characterized by that.
Feature 18: A transformer according to the feature 15, wherein the support metal is divided into a plurality of parts and the divided parts are coupled to each other, and the coupled part is a relatively movable structure.
Feature 19: In the feature 18, the support metal is divided into a plurality of upper and lower parts with respect to the transformer installation reference plane, and the divided parts are coupled to each other, and the coupling surface of the coupling part is the transformer installed The transformer is characterized in that it is in a substantially horizontal direction with respect to a reference plane, and the connecting portion has a relative movable structure in two directions of the X axis and the Y axis.

Feature 20: The transformer according to Feature 19, wherein the relatively movable structure is a structure in which a long hole through which a coupling bolt is inserted is provided in the coupling portion.
Feature 21: In the feature 19, the relative movable structure is such that the diameter of the hole through which the coupling bolt is inserted is larger than the diameter of the coupling bolt to allow the relative movement. This is a transformer characterized by that.
Feature 22: The transformer according to any one of features 18 to 21, wherein a dimension of one coupling seat of the coupling portion is smaller than a dimension of the other coupling seat.
Feature 23: In any one of claims 20 to 22, a hole having substantially the same shape as the hole is provided between the one coupling seat and the other coupling seat of the coupling portion at a position corresponding to the hole. The transformer is characterized in that a spacer having substantially the same size as that of one of the one coupling seat and the other coupling seat is interposed.
Feature 24: The transformer according to feature 23, wherein the spacer is divided into two near the center thereof.
Feature 25: The transformer according to feature 23, wherein the hole of the spacer is a long hole, and is divided into two near the center of the long hole in a direction substantially perpendicular to the longitudinal direction of the long hole. It is a vessel.

Feature 26: In the feature 14, the transformer component has one end coupled to a reinforcing plate of a bushing case coupling pipe provided at an upper portion of the transformer body, and the other end to the reinforcing plate of the bushing case for attaching the bushing. The coupling plate is a coupled plate, and the coupling portion between the reinforcing plate of the bushing case coupling pipe and the coupling plate and the coupling portion between the reinforcing plate of the bushing case and the coupling plate are the relatively movable structures. It is a transformer characterized by.
Feature 27: In the feature 26, all of the reinforcing plate of the bushing case coupling pipe, the reinforcing plate of the bushing case, and the coupling plate extend in a substantially vertical direction with respect to the transformer installation reference plane. It is a transformer characterized by.
Feature 28: In the feature 27, a plurality of reinforcing plates of the bushing case coupling pipe, a reinforcing plate of the bushing case, and the coupling plate are arranged in the circumferential direction, and the reinforcing plate of the bushing case coupling pipe The connecting portion between the connecting plate and the connecting plate and the connecting portion between the reinforcing plate of the bushing case and the connecting plate have a relative movable structure in two directions of Z-axis and Y-axis or two directions of Z-axis and X-axis. This is a transformer characterized by that.

  Feature 29: Transformer coil that generates an induction magnetic field by energization and a transformer body in which a laminated iron core is built in a tank, and a pipe through which an insulating medium for insulating and cooling the transformer coil circulates in the tank of the transformer body And a radiator, and a bushing for maintaining insulation between the external lead wire of the transformer body and the tank of the transformer body, and the coupling of at least one end side of the transformer component that is coupled to other parts at both ends. The coupling surface has a substantially vertical direction or a substantially horizontal direction with respect to the transformer installation reference plane, and the coupling portion having a coupling surface that forms the substantially vertical direction has two directions of Z axis-Y axis or 2 of Z axis-X axis. In the method for manufacturing a transformer, the coupling portion having a relatively movable structure in a direction and having a coupling surface that forms a substantially horizontal direction is a relatively movable structure in two directions of X-axis and Y-axis. Ah , After the assembly of the transformer body, said a transformer manufacturing method characterized by performing the binding to the transformer body of the one end of the transformer components.

Feature 30: In the feature 29, the transformer component is a support metal for supporting the load of the pipe and the radiator on the tank side of the transformer body, and one end of the support metal is connected to the assembly after the assembly. After the coupling to the transformer body, the other end of the support metal and the radiator are coupled.
Feature 31: In the feature 29, the transformer component is a support metal for supporting the load of the pipe and the radiator on the tank side of the transformer body. The support metal is divided into a plurality of parts, and the division part is The coupling portion is coupled to each other, and the coupling portion has a relatively movable structure. After coupling one end of the support metal to the assembled transformer body, the support metal is divided into the plurality of divided portions as spacers. It is the manufacturing method of the transformer characterized by couple | bonding together via.
Feature 32: In the feature 29, the transformer component is a support metal for supporting the load of the pipe and the radiator on the tank side of the transformer body. The support metal is divided into a plurality of parts, and the division part is The coupling part is a relatively movable structure, and one end of the support metal is coupled to the assembled transformer body, and then the divided part of the support metal is divided into the plurality of parts. It is a method for manufacturing a transformer, characterized in that they are connected to each other and a spacer is inserted between the combined divided parts.

  Feature 33: In the feature 29, one end of the transformer component is coupled to a reinforcing plate of a bushing case coupling pipe provided on an upper portion of the transformer body, and the other end is coupled to a reinforcing plate of the bushing case for attaching the bushing. A coupling plate, a coupling portion between the reinforcing plate of the bushing case coupling pipe and the coupling plate, and a coupling portion between the reinforcing plate of the bushing case and the coupling plate are the relatively movable structure, A method of manufacturing a transformer, wherein after the attachment of the reinforcing plate to the bushing case connecting pipe and the attachment of the reinforcing plate to the bushing case, the connecting of the connecting plate to the reinforcing plates is performed. It is.

In the present invention, each embodiment can be appropriately modified or omitted within the scope of the invention.
In addition, in each figure, the same code | symbol shows the same or an equivalent part.

1 lower tank, 2 middle tank, 3 upper tank,
4 MR tank, 5 Lower header,
5a Lower support joint for the lower header,
5b Lower tank middle tank coupling seat, 6 Upper header,
7 Radiator, 8 Lower header support,
8a Lower tank side joint A for lower header support,
8ah long hole, 8b lower header support gold B,
9 Lower oil feed pipe of the present invention, 9a Lower oil feed pipe flange A of the present invention,
9b Lower oil feed pipe flange B of the present invention, 10 Bushing case,
10a bushing case current division A, 10b bushing case current division B,
10c bushing case joint weld, 11 bushing,
12 Conservators, 13 Air vent piping,
14 Conservator support, 15 Inter-header support,
16 Upper oil feed pipe, 18 Lower support washer,
18a Lower support washer of the present invention, 19 Middle support washer,
19a Middle support metal washer of the present invention, 20a Split spacer A,
20b Split spacer B, 20c Split spacer C,
20d Split spacer D, 21 Bushing case coupling piping,
22 Bushing case coupling flange, 23a Reinforcement plate A,
23b Reinforcement plate B, 23c Reinforcement plate C,
24a Reinforcement plate and bushing case welded portion, 24b Reinforcement plate A and reinforcement plate B welded portion,
25 coupling plate, 25ha, 25hb hole,
27 radiator mounting holes, 28 washers,
29, 30, 31 volts,
51a Lower support gold joint seat of the lower header of the present invention,
51b Middle tank coupling seat of the lower header of the present invention,
51bh hole (large diameter), 81 split type lower header support A,
81a (supporting metal A) coupling seat A1, 81ah hole,
81b Lower tank side coupling seat of lower header support A,
82 Split type lower header support gold B,
82a (supporting metal B) coupling seat A2, 82ah hole, 82bh long hole,
91 Conventional lower oil feed pipe A, 92 Conventional lower oil feed pipe B,
91a Piping flange A1, 92b Piping flange B2,
91b Piping flange B1, 92a Piping flange A2,
101 square nut, 102 hexagon bolt,
128 transformer body, 211 bushing case coupling pipe of the present invention,
231 Reinforcing plate A of the present invention, 231h hole,
232 Reinforcing plate B of the present invention, 232h hole,
ΔY Y-axis direction difference between the lower tank side piping flange center and the lower header side piping flange center,
W Welding point of lower oil feed pipe, W2 welding point,
S Piping flange positioning jig,
Sa pipe flange positioning jig length adjustment movable part,
Y1 Y-axis support metal placement dimensions from the transformer center,
X1 X-axis lower header placement dimension from the transformer center,
X2 Radiator layout dimensions in the X-axis direction from the transformer center,
ΔX2 X-axis misalignment between split type lower header support A and split type lower header support B,
ΔY2 Y-axis misalignment between split type lower header support A and split type lower header support B,
h The distance between the bushing side flange of the bushing case and the reinforcing plate.

Claims (20)

A transformer body for generating an induction magnetic field by energization and a transformer body in which a laminated iron core is built in a tank; a pipe and a radiator in which an insulating medium for insulating and cooling the transformer coil circulates in the tank of the transformer body; And a bushing for maintaining insulation between the external lead wire of the transformer body and the tank of the transformer body,
The coupling surface of the coupling on at least one end side of the transformer component that is coupled with other parts at both ends is substantially vertical or substantially horizontal with respect to the transformer installation reference plane,
The coupling part having a coupling surface that forms the substantially vertical direction is a relatively movable structure in two directions of Z axis-Y axis or two directions of Z axis-X axis,
The transformer having a coupling surface having a substantially horizontal direction has a relative movable structure in two directions of X-axis and Y-axis. The transformer according to claim 1,
The transformer component is a support for supporting the load of the pipe and the radiator on the tank side of the transformer body,
The coupling surface of the coupling portion of the support metal with the tank of the transformer main body is in the substantially vertical direction with respect to the transformer installation reference plane, and the coupling portion is in two directions of Z axis-Y axis or Z axis- A transformer characterized by a relative movable structure in two directions of the X axis. The transformer according to claim 2, wherein
The transformer is characterized in that the relatively movable structure is a structure in which a long hole through which a bolt for connection is inserted is provided in the connection part. The transformer according to claim 2, wherein
The transformer is characterized in that the relative movable structure is such that the diameter of the hole through which the coupling bolt is inserted is larger than the diameter of the coupling bolt so as to allow the relative movement. . The transformer according to claim 2, wherein
The transformer is characterized in that the support metal is divided into a plurality of parts and the divided parts are coupled to each other, and the coupled part is a relatively movable structure. The transformer according to claim 5,
The support metal is divided into a plurality of upper and lower parts with respect to the transformer installation reference plane, and the divided parts are coupled to each other,
A transformer characterized in that a coupling surface of the coupling part is substantially horizontal with respect to the transformer installation reference plane, and the coupling part has a relative movable structure in two directions of X-axis and Y-axis. The transformer according to claim 6,
The transformer is characterized in that the relatively movable structure is a structure in which a long hole through which a bolt for connection is inserted is provided in the connection part. The transformer according to claim 6,
The transformer is characterized in that the relative movable structure is such that the diameter of the hole through which the coupling bolt is inserted is larger than the diameter of the coupling bolt so as to allow the relative movement. . In the transformer according to any one of claims 5 to 8,
The transformer characterized in that a dimension of one coupling seat of the coupling portion is smaller than a dimension of the other coupling seat. In the transformer according to any one of claims 7 to 9,
Between the one coupling seat and the other coupling seat of the coupling portion, there is a hole having the same shape as the hole at a position corresponding to the hole, and one of the one coupling seat and the other coupling seat. A transformer characterized by interposing spacers of substantially the same size. The transformer according to claim 10,
The transformer is characterized in that the spacer is divided into two near the center. The transformer according to claim 10,
The transformer is characterized in that the hole of the spacer is a long hole and is divided into two near the center of the long hole in a direction substantially perpendicular to the longitudinal direction of the long hole. The transformer according to claim 1,
The transformer component is a coupling plate in which one end is coupled to a reinforcing plate of a bushing case coupling pipe provided on an upper portion of the transformer body and the other end is coupled to a reinforcing plate of the bushing case for attaching the bushing. ,
The transformer characterized in that the joint portion between the reinforcing plate of the bushing case joint pipe and the joint plate and the joint portion between the reinforcing plate of the bushing case and the joint plate have the relative movable structure. The transformer according to claim 13,
All of the reinforcing plate of the bushing case coupling pipe, the reinforcing plate of the bushing case, and the coupling plate extend in a substantially vertical direction with respect to the transformer installation reference plane. The transformer according to claim 14, wherein
A plurality of reinforcing plates of the bushing case coupling pipe, a reinforcing plate of the bushing case, and the coupling plate are arranged in the circumferential direction.
The connecting portion between the reinforcing plate of the bushing case connecting pipe and the connecting plate, and the connecting portion between the reinforcing plate of the bushing case and the connecting plate are two directions of Z axis-Y axis or two directions of Z axis-X axis. A transformer characterized by a relatively movable structure. A transformer body for generating an induction magnetic field by energization and a transformer body in which a laminated iron core is built in a tank; a pipe and a radiator in which an insulating medium for insulating and cooling the transformer coil circulates in the tank of the transformer body; And a bushing for maintaining insulation between the external lead wire of the transformer body and the tank of the transformer body,
The coupling surface of the coupling on at least one end side of the transformer component that is coupled with other parts at both ends is substantially vertical or substantially horizontal with respect to the transformer installation reference plane,
The coupling part having a coupling surface that forms the substantially vertical direction is a relatively movable structure in two directions of Z axis-Y axis or two directions of Z axis-X axis,
The coupling part having a coupling surface that forms a substantially horizontal direction is a relative movable structure in two directions of the X-axis and the Y-axis.
After assembling the transformer body, the coupling of the one end of the transformer component to the transformer body is performed. The method of manufacturing a transformer according to claim 16,
The transformer component is a support for supporting the load of the pipe and the radiator on the tank side of the transformer body,
A method of manufacturing a transformer, comprising: connecting one end of the support metal to the assembled transformer body, and then connecting the other end of the support metal to the radiator. The method of manufacturing a transformer according to claim 16,
The transformer component is a support for supporting the load of the pipe and the radiator on the tank side of the transformer body,
The support gold is divided into a plurality of parts, the divided parts are coupled to each other, and the coupled part is a relatively movable structure;
A method of manufacturing a transformer, wherein one end of the support metal is coupled to the assembled transformer body, and then the support metal is divided into a plurality of parts and the divided portions are coupled to each other via a spacer. . The method of manufacturing a transformer according to claim 16,
The transformer component is a support for supporting the load of the pipe and the radiator on the tank side of the transformer body,
The support gold is divided into a plurality of parts, the divided parts are coupled to each other, and the coupled part is a relatively movable structure;
After one end of the support metal is coupled to the assembled transformer body, the plurality of divided parts of the support metal are coupled to each other, and a spacer is inserted between the coupled divided parts. A method of manufacturing a transformer. The method of manufacturing a transformer according to claim 16,
The transformer component is a coupling plate in which one end is coupled to a reinforcing plate of a bushing case coupling pipe provided on an upper portion of the transformer body and the other end is coupled to a reinforcing plate of the bushing case for attaching the bushing. ,
The joint between the reinforcing plate of the bushing case joint pipe and the joint plate and the joint between the reinforcing plate of the bushing case and the joint plate are the relatively movable structures,
A method of manufacturing a transformer, wherein after the attachment of the reinforcing plate to the bushing case connecting pipe and the attachment of the reinforcing plate to the bushing case, the connecting of the connecting plate to the reinforcing plates is performed. .

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