JP4150172B2 - On-site assembly method for dismantling transport transformers - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an on-site assembly method for a disassembling and transporting transformer using a clean house, which is equipment necessary for on-site assembly of the transformer.
[0002]
[Prior art]
In recent years, with increasing demand for power, transformers used for transmission and substations have also become higher in voltage and capacity, and transformers are also becoming more difficult in mountainous areas and underground in urban areas due to rising land prices. It tends to be installed. Therefore, it is necessary to greatly reduce the transport dimensions and mass of the transformer and the installation space.
[0003]
Conventionally, for a transformer installed in such a place, for example, in the case of a three-phase transformer, it is configured as three single-phase transformers and divided and transported, and on-site by a three-phase batch tank or a common duct There is a split transport transformer that connects and combines the single-phase transformers to form a three-phase transformer by making a three-phase connection.
[0004]
In this case, after transporting by rail or ship, there is a problem that road reinforcement work including large-scale bridge reinforcement is required for transporting the trailer locally, and enormous transportation costs are required.
[0005]
Therefore, when transport restrictions are particularly severe, there is a disassembled transport transformer in which a transformer assembled at a factory is divided into iron legs, upper and lower yokes, windings, etc., and these parts are reassembled locally.
[0006]
In this method, the iron core, which is the most massive component, is disassembled and transported, so even an iron core with a total mass of 100 tons can be transported with a trailer of about 20 tons, eliminating restrictions on transportation. It can be transported without road reinforcement.
[0007]
For this reason, since the equipment to be erected is also disassembled and transported, it is necessary to disassemble and reassemble after standing up at the factory , and dismantling and transporting transformers tend to require more time for local installation than integrated transportation transformers. is there.
[0008]
The reason for this is that the clean house, which is the equipment necessary for the on-site assembly of the disassembled transport transformer, is assembled on the foundation.After the assembly of the transformer for the bank is completed, the clean house is disassembled and the next bank is built. Move to and reassemble. The local work of assembly, dismantling, moving, and reassembly of equipment necessary for local assembly such as clean houses is carried out.
[0009]
[Problems to be solved by the invention]
Transformer transport restrictions are mainly weight restrictions and dimensional restrictions. In particular, the structure of transformers is often determined by the height restrictions of mountain tunnels and guards in towns. However, the use of can not clear the transportation height limitation, and it must be a disassembled transportation transformer system that is finely disassembled, and large transportation equipment is required.
[0010]
In addition, the assembly Ru If the decomposition transport transformer of more than one is, clean house of assembly, dismantling, moving, there is a great deal of local work such as re-assembly, also equipment assembly of clean house or the like to be required for its local assembly There was a problem that the number of setups increased. JP-A-9-82530 can be cited as an example of the technology of the disassembling and transporting transformer.
[0011]
An object of the present invention is to provide an on-site assembly method for a disassembling and transporting transformer that can reduce on-site assembly time of a clean house and can easily perform on-site work.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a first bank transformer in which a tank in a clean house is assembled with a transformer, such as an iron core, windings, and internal parts, and then the upper tank is put on the tank. After completing the main body, install the transformer main body on the basic surface of the installation position from the opening on the side of the clean house, and then assemble the second bank transformer in the clean house in the same way as the first bank transformer main body. It is characterized by using the clean house repeatedly and reducing the local assembly time of the disassembly and transportation transformer by performing the work.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to FIGS. 1 to 3 show a case where two banks of dismantling and transporting transformers are delivered to the same substation and reassembly is carried out locally. FIGS. 4 and 5 show the structure of the clean house and the dismantling and transporting transformation in the clean house. A part of the assembly of the vessel is shown.
[0014]
1 to 5, the layout in the substation has a local assembly location 2A and a local installation location 2B for assembling the first bank disassembly and transport transformer, and a local road is provided on one side of these locations. Yes. In the transport tank 5 of the transport trailer 3 that stops on the local road opposite to the local assembly site 2A, the disassembled transport transformer is installed at the factory for each part such as the iron core 6, the winding 7, the internal part 8 such as the iron core tightening. The parts of the transformer contents 10 such as the metal fittings and the tank 9 are stored for each installation, and are carried to the site.
[0015]
The clean house 12 is assembled on the base surface 1A provided at the local assembly location 2A. The base surface 1A is formed by being hardened with concrete. The clean house 12 shown in FIG. 4 has a frame portion comprising support columns provided at each corner of the side surface in the longitudinal direction L and the end surface D of the right angle method, and a connecting rod for connecting the upper portions of the support columns. 13 is constituted. A awning 14 made of vinyl is placed on the frame 13 supported on the base surface 1A.
[0016]
The ceiling side of the awning 14 is a ceiling cover 15 made of a bellows that can be freely opened and closed. If the ceiling cover 15 is moved in the left-right direction indicated by an arrow, the transformer contents 10 are placed in the clean house 12 from the formed opening 16. Can carry in parts. An end face cover 17 that opens to the left and right is provided on the end face D of the clean house 12.
[0017]
A drying generator 18 for drying the air in the clean house 12 is disposed on the end cover 17 on one side and the outside of the side surface. In the clean house 12, as shown in FIG. 5, an iron core 6, a winding 7, internal components such as an iron core fastening bracket 8, a lower tank 9, and other transformer contents 10 are arranged between the left and right assembly tables 20.
[0018]
An assembly crane 5A is installed between the transport tank 5 and the clean house 12. The assembly crane 5 </ b> A rotates between the transport tank 5 and the clean house 12 . The assembly crane 5A holding the components of the transformer contents 10 in the transport tank 5 is sequentially carried into the clean house 12 through the opening 16 formed by moving the ceiling cover 15.
[0019]
In the clean house 12, the lower tank 9 is disposed between the left and right assembly tables 20 shown in FIG. 5, the iron core fastening bracket 8 is disposed on the lower side of the lower tank 9, and the iron core 6 is disposed between the iron core fastening brackets 8. The transformer contents 10 are assembled by standing up and inserting the winding 7 into the iron core 6. During the assembly of the transformer contents 10, the dry air from the drying generator 18 is supplied to the iron core clamp 8 in the direction of the arrow to dry the transformer contents 10 and prevent it from moisture. After the transformer contents 10 are completed, the upper tank (not shown) is put on the lower tank 9 to complete the transformer main body 11 in the first bank.
[0020]
The transformer main body 11 of the first bank opens the end face cover 17 of the clean house 2 and moves to the base surface 1B of the bank at the site installation site 2B as shown in FIG. As shown in FIG. 3, the crane 5A for assembling the external parts is installed at the site installation location 2B where the transformer main body 11 of the first bank is moved, and the external parts such as the cooler 19 are attached to the transformer main body 11 and attached. Perform finishing work. 19 A is a lead wire from the winding 7.
[0021]
Further, the end cover 17 of the clean house 12 installed at the local assembly location 2A after the transformer main body 11 of the first bank has moved is closed. In the clean house 12, as shown in FIG. 3, the transformer contents 10B of the second bank are assembled in the same manner as the transformer contents 10 of the first bank, and the transformer body of the second bank is completed.
[0022]
As described above, according to the configuration of the present embodiment, after the transformer main body 11 of the first bank assembled using one clean house 12 is moved to the site installation location 2B, the clean house 12 becomes empty. Since the transformer body in the second bank is assembled, the single clean house 12 can be used many times, and the clean house 12 can be disassembled, moved, reassembled, etc. Can be reduced, and the reassembly work period of the disassembly and transportation transformer can be shortened.
[0023]
Further, the clean house 12 is provided with a ceiling cover 15 that can be freely opened and closed on the ceiling, and the parts of the transformer contents 10 and 10B can be carried in and out of the opening 16 where the ceiling cover 15 is opened. Compared with the case where an openable / closable cover is provided, the assembly table 20 and the like are not obstructed, and the contents of the transformer can be easily carried in and out.
[0024]
Furthermore, since the assembly crane 5A can rotate between the transport tank 5 and the clean house 12, the parts of the transformer contents 10 and 10A or the transformer body 11 can be carried in and out of the transformer body 11 in the shortest distance. It is easy to operate the assembly crane 5A.
[0025]
Next, another embodiment will be described with reference to FIGS.
[0026]
Openable and closable end surface cover 17 provided on the end surface of clean house 12 is opened, and transformer contents 10 such as tank 9, iron core 6, winding 7 and lower tank 9 arranged outside the clean house are mounted from the opening. By moving the transport trailer 3 into the clean house 12, parts of the transformer contents 10 can be transported to the clean house 12 without frequently using the assembly crane 5A. be able to.
[0027]
【The invention's effect】
As described above, according to the present invention, when assembling a plurality of disassembling and transporting transformers on site, a single clean house is repeatedly used many times, thereby dismantling, moving, and reassembling the clean house. And the setup of the equipment can be reduced, and the on-site assembly work period of the disassembly and transportation transformer can be shortened.
[Brief description of the drawings]
FIG. 1 is a plan view of a substation in which the contents of a disassembled transport transformer in the first bank according to an embodiment of the present invention are arranged in a clean house.
FIG. 2 is a plan view showing a case where the transformer body in FIG. 1 is moved to an installation location in a substation.
FIG. 3 is a plan view in which transformer bodies and transformer contents of the first bank and the second bank of FIGS. 1 and 2 are arranged in a substation.
4 is a perspective view of the clean house used in FIG. 1. FIG.
FIG. 5 is a cross-sectional view showing a part of a transformer body in the clean house of FIG. 4;
FIG. 6 is a perspective view of a clean house shown as another embodiment of the present invention.
7 is a schematic cross-sectional view showing a part of a transformer body in the clean house of FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1A ... Base surface, 1B ... Base surface, 6 ... Iron core, 7 ... Winding, 8 ... Iron core clamp, 9 ... Tank, 10, 10A ... Transformer content, 11 ... Transformer body, 12 ... Clean house, 15 ... ceiling cover, 16 ... opening, 17 ... end face cover.

Claims (4)

To decompose the transformer contents transported to site, the local assembly methods of the decomposition transport transformer reassembling transformer contents decomposed at the site, and established a clean house on a foundation surface of the local assembly position, the clean to carry the transformer contents that have been decomposed transported into the house to complete the transformer body doing the assembly, after that, after moving on a base surface of the site installation where the transformer body was completed from a clean house , before Symbol local assembly methods of the decomposition transport transformer, characterized in that by transferring the other transformer contents which have been decomposed transported in a clean house performs the same assembly work and the assembled transformer body. Disassemble the transformer contents, transport them to the site, and reassemble the transformer contents disassembled at the site. In the field assembly method of the disassembled transport transformer, provide a ceiling cover that can be freely opened on the ceiling surface and an end surface cover on the end surface. was clean house and Installation on a foundation surface of the local assembly position, wherein by opening the ceiling cover carries the transformer contents which have been decomposed transported into the clean house, then carried in closing the ceiling cover been transformer performing assembling contents to complete the transformer body, after them, after moving onto the base face of the site installation places the transformer body was completed by opening the end face cover, the front Symbol ceiling cover local assembly methods of the decomposition transport transformer and performing the same assembly work and to carry the other transformer contents which have been decomposed transported transformer body assembled the in the clean house open. Claim before Symbol clean House, which has an end face cover to the end face, characterized in that the trailer is opened the end face cover and adapted to carry a transformer contents mounted to move in said clean house 1. On-site assembly method for disassembling and transporting transformer according to 1. Local assembly methods of the decomposition transport transformer according to claim 1, characterized in that so as to carry into the clean Howe scan the transformer contents which have been decomposed transported by a crane.

Images