JP2008252028A - Iron-core transport tank of disassembled-transport transformer, and assembling method of disassembled-transport transformer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an iron-core transport tank of a disassembled-transport transformer and an assembling method of the disassembled and transported transformer capable of significantly reducing the assembling time and the manufacturing cost, by carrying out both the assembling processes of iron-core units and erecting tanks, at the same time. <P>SOLUTION: In the upper side face plate 4a(4b) of the transport tank 3a(3b) of a disassembled-transport transformer, a portion to be the bottom of an erecting tank 17, when the tank 17 is being erected is identified as a bottom plate 20a(20b) being erected, and the bottom plate 20a(20b) is removably set to the upper side face plate 4a(4b). The bottom plate 20a(20b) is removed, beforehand from the upper side face plate 4a(4b), and then the assembling processes, such as to mount a lower yoke iron-core 8 between the lower end of a leg iron-core 1a and the lower end of a leg iron-core 1b, to tighten the upper side plates 4a and 4b, together with bolts or the like, and to join the upper side plates 4a and 4b, with an integrated bottom plate 22 are carried out, at the same time. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a disassembled transport transformer that is disassembled into a plurality of transport units, transported, and assembled at an installation location, and more particularly, an iron transport tank and a disassembled transport transformer for transporting core components included in the disassembled transport transformer. It is related with the assembly method of.

  In recent years, when the demand for electric power continues to increase, the capacity and size of power transmission transformers are increasing. Therefore, the construction site of the substation where large transformers are installed is in a situation where it is forced to leave the urban area due to soaring land prices. In other words, mountainous areas that are distant from a factory that manufactures transformers for transmission and transformation are often selected as construction sites for substations.

  Therefore, the installation location of the transformer for power transmission and transformation (hereinafter referred to as the local site) is a mountainous area, but the transportation conditions for transporting the transformer to the mountainous area are necessarily severe. Therefore, with regard to transformers for large-capacity and large-sized power transmission and transformation, it is required to reduce the weight and dimensions during transportation in order to satisfy the transportation conditions. In particular, when a transformer is transported by rail, restrictions on transport dimensions and transport weight are absolute, and if the conditions cannot be satisfied, the transformer cannot be transported to the site.

  Therefore, in the field of large electrical equipment such as electric power and industrial transformers and reactors, it is important to reduce the transport scale and weight, and so-called disassembled transport transformers, which are disassembled and transported into a plurality of members. A vessel has been proposed. This disassembled transport transformer is once manufactured at a factory to a finished product, and after being tested, it is disassembled into various components such as an iron core, a winding, and upper and lower yokes.

  In a state where the components are disassembled, they are housed in dedicated transport tanks, transported to the site, and reassembled in the clean house at the installation site. According to such a disassembled transport transformer, the transport tank that stores the disassembled components is the transport unit, so that large transformers can be reliably transported to the mountainous area without being restricted by transport. Is possible.

  Here, the transport of the iron core in the disassembled transport transformer and the assembly method at the site will be described more specifically. The iron core is disassembled into core components such as leg iron cores, side legs, etc., upper yoke iron core, lower yoke iron core, etc., and each is stored in a dedicated transport tank and transported to the site. Then, the transport tank is brought into the local clean house and unpacked there, and the components are taken out from the transport tank and temporarily placed.

  In addition, an iron stand erecting device that is conveyed separately from the iron core components is installed in a local clean house. This iron core standing device has an L-shaped side cross section, has a horizontal surface, a vertical surface, and an edge that is a right angle, and a leg iron core is placed thereon. Subsequently, after attaching the lower yoke iron core to the leg iron core and assembling it into the U-shaped iron core, the iron core standing device is erected using a crane to erect the U-shaped iron core (first assembling method) ). The problem of such an iron core assembling method is that a lot of time and man-hours are required for transportation and installation of the iron core standing device and crane, resulting in an increase in cost.

  In addition, when constructing a substation, a power station, etc. in the basement of a building, as a transformer which can be carried into a narrow space, a multi-division transformer such as a special 6-division system or a special 12-division system is known. Such multi-division transformers do not require an iron stand erecting device, but increase the number of assembly steps by the number of divided components, and the installation space after assembly is larger than that of a normal three-phase collective transformer. Was also getting bigger. For this reason, when the main purpose is to avoid transportation restrictions, disassembly and transportation transformers are more prevalent than multi-division transformers, and various improvements have been made regarding the assembly method of disassembly and transportation transformers.

  For example, in the technique described in Patent Document 1, transport tanks containing leg iron cores are connected on site to assemble an upright tank for standing up an iron core unit. That is, a part of the standing tank is used as an assembly surface plate, and the iron core constituent members are assembled into the iron core unit on the assembly surface plate. Then, with the iron core unit assembled, the upright tank is rotated and raised in a predetermined direction to raise the iron core unit (second assembling method). According to such an assembling method, it is possible to omit the transportation and installation work of the iron core upright device, shorten the construction period, and reduce the assembling cost.

  However, in the second assembling method described above, an iron core transport tank other than the iron core transport tank that also serves as an assembly surface plate must be discarded, and extra labor and cost are required. In addition, the dimensions of the transport tank that also serves as the assembly surface plate are manufactured in consideration of after the iron core unit is assembled. As a result, it is necessary to make the size somewhat larger than the minimum size required for transporting the iron core components, which causes a disadvantage in terms of transportation constraints such as an increase in the size of the transportation tank.

  In order to cope with such problems of the second assembling method, a transport tank and an assembling method described below have been proposed. That is, as shown in FIG. 7, the transport tanks 3a and 3b are tanks for transporting the two leg iron cores 1a and 1b constituting the U-shaped iron core, respectively, and the bottom plates 2a and 2b and the upper side plates 4a and 4b, It is comprised from the side plate (not shown). Moreover, the assembly surface plate 6 can be attached here by combining the bottom plates 2a and 2b of the two transport tanks 3a and 3b. The leg iron cores 1a and 1b, which are iron core constituent members, and the lower yoke iron core 8 are placed on the assembly surface plate 6. Here, the iron core constituent members are assembled into a U-shaped iron core unit. .

  Then, the procedure of the assembly method of an exploded transport transformer is demonstrated using FIGS. 7-13. First, FIG. 7 shows a state in which the two leg iron cores 1a and 1b, which are iron core components of the transformer, are stored in the transport tanks 3a and 3b. Such transport tanks 3a and 3b are transported to a local clean house (not shown). In the clean house, as shown in FIG. 8, the transport tanks 3a and 3b are unpacked, and the leg iron cores 1a and 1b in the transport tanks 3a and 3b are hung out as shown in FIG. Temporarily place each.

  Next, the bottom plate 2a and the bottom plate 2b, which become a single unit along with the unpacking of the transport tanks 3a and 3b, are integrated into a single bottom plate 22 by bolt fastening. Then, the integrated bottom plate 22 is fixed on a pre-installed base (not shown), and the height is adjusted so that the lower yoke iron core 8 can be assembled (FIG. 10).

  Subsequently, as shown in FIG. 11, the assembly surface plate 6 is connected to the integrated bottom plate 22, and the height of the surface on which the leg iron cores 1a and 1b are placed is adjusted. Further, the leg iron core 1a and the leg iron core 1b are placed on the assembly surface plate 6 to adjust the dimensions. Then, as shown in FIG. 12, the U-shaped iron core unit 16 is assembled by stacking the lower yoke iron core 8 between the lower ends of the leg iron core 1a and the leg iron core 1b.

After finishing the assembling work of the iron core unit 16 as described above, as shown in FIG. 13, the work of fastening the upper side plates 4a, 4b of the transport tanks 3a, 3b with bolts and the upper side plates 4a, 4b are integrated. The operation of combining with the bottom plate 22 is performed, and the two transport tanks 3 a and 3 b are connected to assemble the upright tank 17 so as to surround the iron core unit 16. Thereafter, a wire is attached to a hanging ear attached to the standing tank 17 and lifted by a crane or the like and rotated in a predetermined direction, and the core unit 16 is raised together with the standing tank 17.
JP 2004-111855 A

  However, the prior art shown in FIGS. 7 to 13 has the following problems. That is, since the standing tank 17 is assembled so as to surround the iron core unit 16, the assembling process of the standing tank 17 shown in FIG. 13 must be completed after the assembling process of the iron core unit 16 shown in FIG. Can't move on.

  That is, the assembly process of the iron core unit and the assembly process of the upright tank cannot be performed in parallel at the same time, and the two types of assembly processes must be performed independently and in sequence. For this reason, the number of processes is increased, transformer assembly work time is prolonged, and the assembly cost is increased.

  The present invention has been made in response to such a conventional situation, and an assembly process of an iron core unit and a standing tank are provided by detachably providing a portion serving as a bottom surface of the standing tank with respect to an upper side plate of a transport tank. It is an object of the present invention to provide an iron transport tank and a method for assembling the disassembly transport transformer that can significantly reduce the assembly time and reduce the assembly cost.

  In order to achieve the above object, the present invention is a tank for storing an iron core component of an exploded transport transformer, and a bottom plate to which an assembly platen for assembling the iron core component into an iron core unit can be attached; An upper side plate fastened to the bottom plate, and a plurality of the tanks are connected to form an upright tank, and an iron core unit assembled by the assembly surface plate is stored in the upright tank and the iron core unit together with the upright tank In the iron core transport tank of the disassembly transport transformer configured to stand up, the portion corresponding to the bottom surface of the stand-up tank when in the standing state is a bottom plate at the time of standing that is detachable from the upper side plate. And

  In the present invention having the above configuration, since the bottom plate of the standing tank is detachable from the upper side plate, the standing tank is assembled so as to surround the iron core unit by removing the bottom plate from the upper side plate when standing. Even so, the assembly process of the iron core unit can be carried out from the space where the bottom plate is removed at the time of standing. That is, while performing the assembly process of the iron core unit, the assembly process of the standing tank can be performed in parallel with this. Thus, by performing two types of assembly processes in parallel, the two types of assembly processes can be completed with only the time required for one type of assembly process, and the assembly work time can be shortened.

  According to the iron transport tank of the disassembled transport transformer and the method of assembling the disassembled transport transformer according to the present invention, the assembly process of the iron core unit can be performed by a simple configuration in which the bottom plate of the stand up tank is detachably attached to the upper side plate. As a result, it was possible to carry out the assembly process of the standing tank at the same time, greatly reducing the assembly time and reducing the assembly cost.

(1) First Embodiment [Configuration]
Hereinafter, an example of an embodiment according to the present invention will be specifically described with reference to FIGS. In addition, about the same member as the prior art shown in FIGS. 7-13, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The structural feature of the present embodiment is that the portions of the upper side plates 4a and 4b of the transport tanks 3a and 3b that serve as the bottom plate of the standing tank 17 when they are in the standing state are the standing bottom plates 20a and 20b. 4a and 4b are detachably provided (see FIG. 1). Hereinafter, the procedure of the method for assembling the disassembled transport transformer according to the present embodiment will be described with reference to FIGS. 1 to 4 and FIGS. 9 to 11.

  In the state of FIG. 1, the two leg iron cores 1a and 1b, which are iron core components, are housed in the transport tanks 3a and 3b as in FIG. 7, and are transported to a local clean house. Subsequently, as shown in FIG. 2, the transport tanks 3a and 3b are unpacked, and the side plates (not shown) and the upper side plates 4a and 4b of the transport tanks 3a and 3b are removed. At this time, the standing bottom plates 20a, 20b are removed from the temporarily placed upper side plates 4a, 4b (step of removing the standing bottom plates 20a, 20b).

  Thereafter, the process is the same as that shown in FIGS. That is, as shown in FIG. 9, the leg iron cores 1a and 1b in the transport tanks 3a and 3b are suspended and temporarily placed on the sides of the transport tanks 3a and 3b. Next, the bottom plate 2a and the bottom plate 2b, which are united by unpacking the transport tanks 3a and 3b, are integrated by bolt fastening to form an integrated bottom plate 22.

  Then, the integrated bottom plate 22 is fixed on a pre-installed base (not shown), and the height is adjusted so that the lower yoke iron core 8 can be assembled (FIG. 10). Subsequently, as shown in FIG. 11, the assembly surface plate 6 is connected to the integrated bottom plate 22, and the height of the surface on which the leg iron cores 1a and 1b are placed is adjusted. Furthermore, the leg iron core 1a and the leg iron core 1b are placed on the assembly surface plate 6 to adjust the dimensions.

  The assembly method according to this embodiment is characterized by the subsequent steps. This will be described with reference to FIGS. As shown in FIG. 3, the iron core unit 16 is assembled by stacking the lower yoke iron core 8 between the lower ends of the leg iron core 1a and the leg iron core 1b. The upright tank 17 is assembled in parallel with the assembly operation of the iron core unit 16. Specifically, the work of fastening the upper side plates 4a, 4b with bolts and the work of combining the upper side plates 4a, 4b with the integrated bottom plate 22 are carried out, and the standing tank 17 is assembled except for the standing bottom plates 20a, 20b.

  In this way, the assembly process of the iron core unit 16 and the standing tank 17 is performed in parallel, and then the standing bottom plates 20a, 20b are fastened to the upper side plates 4a, 4b and the integrated bottom plate 22, and the standing tank 17 is fixed. Complete (see FIG. 4). Thereafter, a wire is attached to a hanging ear attached to the standing tank 17 and lifted by a crane or the like, rotated in a predetermined direction, and the core unit 16 and the standing tank 17 together with the standing tank 17 are housed in the core unit. Stand 16 up.

[Function and effect]
The first embodiment described above has the following operational effects. In other words, since the upright tank 17 in the completed state in which the upper side plates 4a and 4b are conventionally fastened completely surrounds the iron core unit 16, all the processes of stacking the lower yoke 8 on the two leg iron cores 2a and 2b are completed. Otherwise, it was not possible to proceed to the step of attaching the upper side plates 4a, 4b. On the other hand, in this embodiment, since the standing bottom plates 20a and 20b are removed from the upper side plates 4a and 4b, a process of stacking the lower yoke 8 from the removed space can be performed.

  Therefore, while performing the assembly process of the iron core unit 16, the assembly process of the standing tank 17 (more precisely, the fastening process of the upper side plates 4a and 4b, which are part of the assembly process of the standing tank 17, and the upper side plates 4a and 4b It is possible to carry out a combination step with the integrated bottom plate 22. Therefore, it is possible to perform two types of assembly processes in the time required for one type of assembly process, and the assembly work time can be greatly shortened. As a result, the assembly cost can be reduced, which is economically advantageous.

(2) Second Embodiment [Configuration]
A second embodiment according to the present invention will be described with reference to FIGS. FIG. 5 is a side view according to the present embodiment, and FIG. 6 is a plan view. As shown in FIG. 5 and FIG. 6, iron core standing supports 21 a and 21 b for adjusting the gap between the bottom surface of the standing tank 17 and the iron core unit 16 are attached to the standing bottom plates 20 a and 20 b. In FIG. 5, reference numeral 5 denotes a gantry. Further, a gap adjusting liner 7 is disposed between the iron core unit 16 and the assembly surface plate 6.

[Function and effect]
After assembling the iron core unit 16, when the iron core unit 16 is erected together with the erection tank 17, the gap adjustment work between the iron core unit 16 and the bottom of the erection tank 17 is performed in order to stabilize the iron core unit 16 in the erection tank 17. There is a need. With regard to this clearance adjustment work, it is conceivable that a liner is sandwiched between the iron core unit 16 and the bottom surface of the standing tank 17. However, if this is performed in the standing tank 17 after assembly, Since the space is extremely limited, there is a problem that work efficiency is low.

  Thus, in the present embodiment, the position adjustment of the iron core standing support 21a, 21b attached to the standing bottom plate 20a, 20b can be performed with the standing bottom plate 20a, 20b removed from the upper side plate 4a, 4b. Thereby, the position adjustment work of the supports 21a and 21b when the iron core stands can be performed in a wide space. That is, the work environment can be improved and the work efficiency can be increased. In addition, the gap adjustment according to the present embodiment is not the adjustment by the liner, but can be adjusted by the support members 21a and 21b, which are dedicated members, and the dimensional adjustment accuracy can be easily improved, and the assembly quality of the iron core unit 16 can be improved. Has the effect of improving.

(3) Other Embodiments The present invention is not limited to the above embodiment, and the number and shape of each component can be changed as appropriate. For example, as the shape of the standing bottom plate, If it is an L-shaped member instead of a flat plate, when it is removed from the upper side plates 4a and 4b, a larger working space can be secured, and the work of stacking the lower yoke 8 can be efficiently performed. It becomes possible to carry out.

1 is a plan view of a first embodiment according to the present invention. The top view of a 1st embodiment. The top view of a 1st embodiment. The top view of a 1st embodiment. The side view of 2nd Embodiment which concerns on this invention. FIG. 6 is a plan view of FIG. 5. The top view which shows the assembly process of the conventional iron core unit and a standing tank. The top view which shows the assembly process of the conventional iron core unit and a standing tank. The top view which shows the assembly process of the conventional iron core unit and a standing tank. The top view which shows the assembly process of the conventional iron core unit and a standing tank. The top view which shows the assembly process of the conventional iron core unit and a standing tank. The top view which shows the assembly process of the conventional iron core unit and a standing tank. The top view which shows the assembly process of the conventional iron core unit and a standing tank.

Explanation of symbols

1a, 1b ... Leg cores 2a, 2b ... Bottom plates 3a, 3b ... Transport tanks 4a, 4b ... Upper side plate 5 ... Base 6 ... Assembly surface plate 7 ... Liner
8 ... Lower yoke iron core 20a, 20b ... Standing bottom plate 21a, 21b ... Iron core standing support 22 ... Integrated bottom plate

Claims (3)

A tank for storing an iron core component of a disassembled transport transformer, comprising a bottom plate to which an assembly platen for assembling the iron core component into an iron core unit can be attached, and an upper side plate fastened to the bottom plate, A disassembled transport transformer configured to connect a plurality of tanks to form an upright tank, and to store the iron core unit assembled on the assembly surface plate in the upright tank and to stand up the iron core unit together with the upright tank. In iron core transport tanks,
An iron core transport tank of an exploded transport transformer, wherein a portion corresponding to the bottom surface of the stand-up tank when standing is a bottom plate that is detachable from the upper side plate.   2. The disassembled transport transformer according to claim 1, wherein a support for standing up of the iron core for adjusting a gap between the bottom surface of the standing tank and the iron core unit in the standing state is installed on the bottom plate at the time of standing. Iron core transport tank. A method of assembling the disassembled transport transformer by using a tank that houses and transports an iron core component of the disassembled transport transformer, wherein the iron core component is assembled into an iron core unit by an assembly surface plate attached to the tank. Assembling the unit, assembling the standing tank by connecting a plurality of the tanks as standing tanks, and storing the iron core unit assembled by the assembly surface plate in the standing tank, In the assembly method of the disassembly and transportation transformer including the standing process of standing the iron core unit,
A portion corresponding to the bottom surface of the standing tank when in the standing state is a bottom plate that is detachable with respect to the upper side plate, and includes a step of removing the bottom plate at the time of removing the bottom plate from the upper side plate,
A method for assembling an exploded transport transformer, wherein the assembly process of the iron core unit and the assembly process of the upright tank are performed simultaneously.

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