JPS63245912A - Transformer - Google Patents

Abstract

PURPOSE:To stack a plurality of main bodies easily by dividing a transformer, fitting cores at a lower stage to a lower frame, fitting legs on both sides of stacked cores to a pair of side-section frame materials and mounting a core support-frame member between a pair of the side-section frame materials in the upper section of main bodies at the lower stage. CONSTITUTION:A lower frame 2 has a fitting section 2a and a flange 2b, and a yoke section in a core 1a for a transformer body 1 at a lower stage is engaged with the fitting section 2a through insulating materials 3. The lower ends of side frames 4 are welded to the frame 2, and both external leg sections of the core 1a are fitted into recessed sections 4a through the insulating materials. A yoke section in the core 1a for an upper-stage transformer body is engaged with a recessed section 7a in a support frame 7 through an insulating material, and side plates 9 are fixed to the side frames 4 by bolts 10. A hold- down member 12 is set up at the center of the lower surface of the support frame 7, and abutted against the upper surface of the core 1a at the lower stage. An upper frame 13 takes a box shape, is fitted to the core 1a for the upper-stage body and is mounted to the side frames 4 by bolts 17. According to the constitution, transformers are stacked easily, and a floor space is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION C Configuration of the Invention] (Industrial Application Field) The present invention relates to a transformer in which transformer bodies are stacked in several stages.

(Conventional technology) The electrical distribution equipment in the building is air conditioning equipment and lighting equipment.

Due to the automation of other equipment and the installation of various types of office equipment, their capacity is increasing, and high-voltage transformers are being used from an economic standpoint. Additionally, there is a trend toward detailed power management for saving power in areas such as partial lighting. For this reason, instead of installing a large-capacity high-voltage transformer at the IFi station in the underground ring and distributing power to each floor,
In order to reduce losses during light loads, small or medium-capacity high-voltage transformers are installed on every first floor or every second or third floor, and power is then distributed to the floors assigned to the transformer.

(Problems to be Solved by the Invention) Conventional transformers, especially dry type transformers, have a structure in which the mechanical strength of the transformer itself depends on the iron core, and the cooling method is natural cooling with air, so the iron core Generally, a device with a small height and a large width is used, which requires a large installation area.

Therefore, an object of the present invention is to provide a transformer that can reduce the installation area.

[Structure of the Invention] (Means for Solving the Problems) The transformer of the present invention is such that a plurality of transformer bodies are stacked in multiple stages, and the core of the lower transformer body is stacked in multiple stages. The fitting parts of the lower frame member are fitted into the lower yoke parts of the lower yoke, and the lower ends are connected to the legs on both sides of the cores of several m transformer bodies to be stacked, respectively, to both ends of the lower frame member. The fitting parts of the pair of side frame parts are fitted, and the fitting part of the support frame member is fitted to the lower yoke part of the iron core of the upper transformer main body. The transformer main body is located on one side and is attached between the pair of side frame members, and the upper frame member is attached between the pair of side frame members in correspondence with the iron core of the uppermost transformer main body. It is.

(Function) According to the transformer of the present invention, the transformer main body is divided into stages, the core of the lower transformer main body is fitted into the fitting part of the lower frame member, and several m pieces are stacked in stages. Since the legs on both sides of the core of the transformer body are fitted into the fitting parts of the pair of side frame members,
Installation area becomes smaller. In addition, the support frame member into which the core of the upper transformer body is fitted is positioned above the lower transformer body and installed between the pair of side frame members, and the support frame member is fitted between the pair of side frame members. Since the frame member is attached, several transformer bodies can be stacked easily.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

Reference numeral 1.1 denotes a plurality of three-phase transformer bodies, for example two, which are stacked on top of each other, each of which has a winding 1b wound around the three inner legs of a wound core 1a, for example. There is. 19 is a framework in which these transformers 1.1 are housed, and this is a framework in which the lower frame members 2.1 are housed. A pair of side frame members 4.・4. It is composed of a support frame member 7 and a lower frame member 13. That is, the lower frame member 2 has a V-shaped cross section with an open upper surface, and its four parts are a fitting part 2a, and the part extending outward from this is a flange part 2b. A lower yoke portion of the iron core 1a of the lower transformer main body 1 is fitted into this fitting portion 2a via an insulating material 3.3 (see FIG. 4). The pair of side frame members 4.4 have a cross-sectional shape with open sides, and their lower ends are respectively connected to both ends of the lower frame member 2 by welding, and the side open recesses are connected to the fitting portions 4a, 4a. Two transformer bodies 1 are stacked together with an insulating material (not shown) interposed therebetween.
．． It is fitted into the inner and outer legs of the iron cores 1a and 1a. 5 and 5 are welded to the lower end of each side frame member 4, respectively.
A hole 6 is formed in the lower surface of each of the fixing dust pieces attached one by one. The support frame member 7 has a T-shaped cross section with an open upper surface, the recessed portion thereof serves as a fitting portion 7a, and the portion extending outward from this portion serves as a flange portion 7b. The lower yoke portion of the iron core 1a of the upper transformer main body 1 is fitted into this fitting portion 7a via an insulating material (not shown), and has holes (not shown) at both ends. Side plates 9, 9 are attached. This support frame member 7 is constructed by screwing a nut 11 into a bolt 10 that is inserted through a hole formed approximately in the middle of each side frame member 4 and a hole formed in each side plate 9 (none of which are shown). By doing so, it is attached to the side frame member 4.4 in a position above the lower transformer main body 1. Reference numeral 12 denotes a presser member attached to the center of the lower surface of the support frame member 7, the lower surface of which is in contact with the upper surface of the iron core 1a of the lower transformer main body 1. A space 12a is formed. The upper frame member 13 has a box shape with a fitting part 13a inside, and two holes 14 are formed in the side plates 15 at both ends, and the fitting part 13a is connected to the upper transformer. It is fitted into the upper yoke portion of the iron core 1a of the main body 1. This upper frame member 13 has holes 16.16 and 14.16 formed in each side frame member 4 at both ends thereof, respectively.
By threading a nut (not shown) onto a bolt 17.17 inserted through the side frame member 4.14, the side frame member 4.4 is mounted between the upper end portions of the side frame member 4.4 at a position below the upper end thereof. The windings 1b and lb of the upper and lower transformer bodies 1 and 1 are used individually or connected in parallel, respectively.

Incidentally, reference numeral 18 denotes a hole for hanging formed in the upper side surface portion of each side frame member 4.

According to the above embodiment, the following effects can be achieved.

In other words, since the two transformer bodies 1 and 1 are stacked in the first and lower tiers, a container equivalent to two transformer bodies 1 can be obtained with the installation area for one transformer body 1. Can be done. Therefore, the installation area can be significantly reduced compared to the conventional method in which one large transformer with a capacity equivalent to two transformer bodies 1 is installed. Moreover, the iron cores 1a, Ia of the transformer main body 1.1 are connected to the fitting portion 2a of the lower frame member 2, the fitting portions 4a, 4a of the pair of side frame members 4, 4, and the support F! j frame member 7
Since it is fitted into the fitting part 7a of the transformer body 1.1 and the fitting part 13a of the upper frame member 13, there is no surplus space on both the left and right sides of the cores 1a and la of the transformer body 1.1, and the installation area is further reduced. can be done.

When stacking two stages of transformer bodies 1, the support frame member 7 is looked between the pair of side frame members 4 and 4, and the transformer body 1 of the first stage is inserted from one side. Stacking is easy because all you have to do is

In particular, in the above embodiment, since the air space of the upper transformer main body 1 is supported by the pair of side frame members 4.4, even when the transformer main bodies 1 are stacked in two stages, the lower transformer main body 1 Since 1 m of the upper transformer body 1 does not extend over the iron core 1a of the main body 1, the electrical characteristics of the lower transformer body 1 do not deteriorate. In addition, the side frame key 7 is made into a V shape and the flange portion 7a
was formed, so after cooling the lower transformer body 1)
- The flange portion 7a of the side frame member 7 blocks the rising hot air, so that the temperature of the winding 11b of the first stage transformer body 1 rises due to the heat of the lower stage transformer body 1. It will not increase. In addition, if one of the transformer bodies 1.1 breaks down and needs to be replaced, there is no need to replace the whole thing, and only the broken part needs to be replaced. It is easy because it only requires one container body 1.

FIG. 5 shows another embodiment of the present invention, and the difference from the above embodiment is that the side frame member 4.4 is replaced by a fitting part 20a,
Using a pair of elongated side frame members 20.20 having 20a, another support frame member 7 is installed between the lower transformer main body 1 and the upper transformer main body 1, and this is fitted. Part 7a
The lower yoke of the iron core 1a of the middle transformer main body 1 is fitted to the lower yoke of the core 1a of the transformer main body 1 in the middle stage, so that three transformer main bodies 1 are stacked. used connected to a column. In this case, when the capacity is sufficient with two transformer bodies 1.1, the 10-stage transformer body 1 is not provided, and when there is a shortage of 8 transformer bodies 1, the upper transformer body 1 is installed.
It is also possible to provide a. Therefore, in this embodiment as well, 1. This embodiment provides the same effects as the embodiment described in .

Note that the present invention is not limited to the embodiments shown in the above-mentioned drawings; for example, a plurality of four or more transformer bodies l can be constructed using a pair of elongated side frame members. It is also possible to stack them in layers, and by appropriately selecting the number of stacks, it is possible to quickly respond to increases and decreases in capacity, and the transformer body l
Transport and replacement work will also be easier. In addition, the transformer body 1
However, it may have a single phase structure.

[Effects of the Invention] As is clear from the explanation in section 1- below, the present invention provides a structure in which the fitting portion of the lower frame member is fitted to the lower yoke portion of the iron core of the lower transformer main body, and a plurality of The fitting parts of a pair of side frame members whose lower ends are respectively connected to both ends of the lower frame member are fitted to the legs on both sides of the iron core of the upper transformer main body, and The fitting portion of the support frame member is fitted into the lower yoke portion, and the support frame member is positioned above the lower transformer main body and installed between the pair of side frame members. Since the upper frame member is attached between the members in correspondence with the core of the transformer main body in the uppermost stage, the installation area can be reduced and stacking work can be easily performed.

[Brief explanation of drawings]

1 to 4 show one embodiment of the present invention, in which FIG. 1 is an overall front view, FIG. 2 is a side view of the same, FIG. 3V4 is an exploded perspective view of the framework, and FIG. ] FIG. 5 is a sectional view taken along the line IV-IV in the figure, and FIG.
It is a figure equivalent figure. In the figure, 1 is the transformer main body, 1a is the iron core, 2 is the lower frame member,
2a is a fitting part, 4, 20 are a pair of side frame members, 4a, 2
0a is a fitting part, 7 is a support frame member, 7a is a fitting part, 13 is an upper frame member, 13a is a fitting part, and 19 is a framework.

Claims (1)

[Claims] 1. A plurality of transformer bodies are stacked in multiple stages, and the lower frame member has a fitting part that fits into the lower yoke part of the iron core of the lower transformer body, and the stages a pair of side frame members having fitting portions that fit into the legs on both sides of the iron cores of the plurality of stacked transformer bodies, and whose lower end portions are respectively coupled to both ends of the lower frame member; a support frame member that is located above the lower transformer main body and is attached between the pair of side frame members and has a fitting part that fits into the lower yoke of the iron core of the upper transformer main body; and an upper frame member attached between the side frame members in correspondence with the iron core of the uppermost transformer main body.