JP3064704B2 - Transformer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transformer having two transformer bodies each having a winding wound around a laminated iron core and arranged side by side on a base so as to oppose each other in the lamination direction of the iron core.

[0002]

2. Description of the Related Art A conventional structure of this type of transformer will be described with reference to FIGS. On a base 1 formed by combining a plurality of steel materials 1a and 1b in a rectangular shape, there are provided two transformer bodies 2, 2 each having a winding 2b mounted on a three-phase tripod-type laminated iron core 2a. . The lamination direction of the laminated core 2a is in the horizontal direction on the paper, and the two transformer bodies 2,
2 are arranged side by side so as to face each other in the iron core laminating direction. Each transformer body 2 is fixed to the base 1 by bolting the lower clamp 2c of the laminated core 2a to the base 1.

The left and right sides of the upper part of each transformer body 2 and the base 1 are connected by reinforcing columns 3 and 3, respectively. The reinforcing columns 3 are bolted at the lower end to the base 1 and welded at the upper end to the upper clamp 2d of the laminated core 2a. I have. Thus, even if the base 1 vibrates in the horizontal direction of the drawing due to an earthquake or the like, the vibration of the transformer main bodies 2 with respect to the base 1 is suppressed by the plurality of reinforcing columns 3.

[0004]

By the way, the laminated core 2
The rigidity of a is relatively small with respect to the iron core lamination direction,
For this reason, in the above-mentioned conventional configuration, each transformer main body 2
However, there is a circumstance that the paper is likely to vibrate in the left-right direction. Therefore, it is preferable to improve the rigidity of the reinforcing columns 3 in the left-right direction on the paper surface to further reduce the vibration amount of the transformer main body 2. To this end, the mounting angle θ of the reinforcing columns 3 with respect to each transformer main body 2 is increased. It can be considered.

However, when the mounting angle θ of the reinforcing column 3 is increased, the width W of the base 1 is correspondingly increased, which causes a problem that the entire transformer is increased in size. Moreover, when the transformer is housed in a cubicle and used, the cubicle is also enlarged.

Further, in response to vibration of the base 1 in the horizontal direction of the drawing, the lower side and both left and right ends of the transformer main body 2 along the longitudinal direction are restrained by the base 1 and the reinforcing columns 3. On the other hand, the upper central part of the transformer main body 2 is not restrained. Therefore, the amount of deflection of the transformer body 2 becomes large in the upper center, and as a result, each transformer body 2 is twisted, particularly when the laminated core 2a has an elongated shape such as a three-phase tripod type. It will be in the state that was done. This tendency is expected to become more remarkable as the rigidity of the reinforcing columns 3 that support the left and right sides of both ends along the longitudinal direction of the transformer main body 2 is improved. Therefore, in improving the rigidity of the reinforcing column 3, it is necessary to consider the problem of the transformer main body 2 being twisted.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to reduce the amount of vibration of a transformer body relative to a base without increasing the overall size of the transformer body. An object of the present invention is to provide a transformer capable of preventing a twist from occurring in the transformer.

[0008]

According to the present invention, there is provided a transformer in which two transformer bodies each having a winding wound around a laminated iron core are juxtaposed on a base so as to face each other in the direction of lamination of the iron core. In the above, the upper portions of the two transformer bodies are connected to each other by a reinforcing frame, and the upper portion of one of the transformer bodies has a slanted portion between one side and the other side in the core lamination direction and the base. A slanted reinforcement that is connected with a reinforcing column and that is shorter than the reinforcing column between one side of the core of the other transformer main body in the stacking direction and the reinforcing column on the other side of the one transformer main body. It is characterized in that it is connected by a pillar, and that the other side of the upper part of the other transformer body in the direction of lamination of the iron core and the base are connected by an oblique reinforcing pillar.

[0009]

According to the above-mentioned means, one side of the other transformer main body is supported by the reinforcing column shorter than the reinforcing column on the reinforcing column supporting one side of the transformer main body. Therefore, even if the mounting angle of each reinforcing column with respect to the transformer main body is increased, the width of the entire transformer is not increased. In addition, since the upper portions of the two transformer bodies are connected to each other by the reinforcing frame, the upper central portion of each transformer body does not vibrate, and as a result, each transformer body can be prevented from being twisted. .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. First, in FIG.
Is formed by combining elongated steel materials 11a and 11b in a rectangular frame shape. On the base 11, two transformer bodies 12, 13 are arranged as shown in FIG. That is, the transformer bodies 12, 13 are formed by mounting the windings 12b, 13b on the legs of the three-phase three-legged laminated cores 12a, 13a, respectively.
The iron core lamination direction is the left-right direction on the paper. The two transformer bodies 12, 13 are arranged in parallel so as to face each other in the iron core laminating direction.

At the upper ends of the laminated cores 12a and 13a, a pair of upper clamps 14 each having a substantially U-shaped cross section are provided.
a, 14a and 14b, 14b are attached, and a pair of lower clamps 15a, 15a, 15
b, 15b are attached. And the transformer body 1
2 and 13 are lower clamps 15a, 15a and 1
5b and 15b are fixed on the base 11 by bolting them to the base 11.

As shown in FIG. 3, the reinforcing frame 16 includes a frame body 16a formed by combining steel members having a substantially U-shaped cross section in a rectangular frame shape, and a reinforcing member provided in the frame of the frame body 16a. 16b, 16b. A plurality of mounting holes 16c are formed in the frame main body 16a, and as shown in FIG.
The bolts 17a inserted into the mounting holes 16c are connected to the upper clamps 14a, 14a and 1 of the transformer bodies 12 and 13.
The upper portions of the transformer bodies 12 and 13 are connected to each other by the reinforcing frame 16 by being screwed into the mounting holes 4b and 14b.

The first and second reinforcements each have an oblique shape between the left and right sides, one side and the other side, of the upper part of the transformer main body 12 in the core lamination direction. They are connected by columns 18 and 19.

That is, as shown in FIG. 2, one first reinforcing column 18 is provided at each of both ends in the longitudinal direction of the transformer main body 12, and as shown in FIG. And a flat seat portion 18b welded to the lower end surface of the steel material 18a. And this seat 18b
Are formed with a plurality of mounting holes 18c. The lower end side of the first reinforcing column 18 is screwed into a mounting hole of the base 11 with a bolt 17b inserted in the mounting hole 18c, so that the base 11 The upper end is attached to the transformer main body 12 by being welded to an upper clamp 14a on the left side of the transformer main body 12.

The second reinforcing column 19 is, as shown in FIG.
Each one is provided at each of both ends in the longitudinal direction of the transformer main body 12, and as shown in FIG. 5, is composed of a steel material 19a corresponding to the steel material 18a and a seat portion 19b corresponding to the seat portion 18b. . A seat 19d having a mounting hole (not shown) is provided substantially in the middle of the steel material 19a.
Like the first reinforcing column 18, the second reinforcing column 19 has a lower end fixed to the base 11 by bolts 17c and an upper end welded to the upper clamp 14a on the right side of the transformer body 12.

An oblique shape is formed between the left side, which is one side of the upper part of the other transformer body 13 in the lamination direction of the iron core, and the second reinforcing column 19 on the right side of the one transformer body 12. They are connected by third reinforcing columns 20.
That is, as shown in FIG. 2, one third reinforcing column 20 is provided at each of both ends in the longitudinal direction of the transformer main body 12, and as shown in FIG. A steel member 20a having a shorter H-shaped cross section than the reinforcing columns 18 and 19;
a of a flat plate-shaped seat portion 20b welded to the lower end surface of a.

The lower end of the third reinforcing column 20 is provided with a bolt 17d inserted into the mounting hole 20c of the seat 20b.
The second reinforcing column 19 is attached to the second reinforcing column 19 by being screwed into a mounting hole provided in a seat 19 d of the second reinforcing column 19. The upper end is attached to the transformer main body 13 by being welded to the upper clamp 14 on the left side of the transformer main body 13.

Further, the upper portion of the other transformer body 13 is connected to the base 11 by a first reinforcing column 18 between the right side, which is the other side in the iron core laminating direction, and the first reinforcing column. 18 is a transformer body 13 as shown in FIG.
Are provided at both ends in the longitudinal direction.

According to the above embodiment, the following effects can be obtained. That is, a third reinforcing column 20 shorter than the first and second reinforcing columns 18 and 19 is provided between the left side of the upper portion of the transformer main body 13 and the second reinforcing column 19 on the right side of the transformer main body 12.
Even if the mounting angle θ of each of the reinforcing columns 18 to 20 with respect to the transformer main bodies 12 and 13 is increased, the overall width of the transformer is not increased, and the transformer is stored in a cubicle. The cubicle is not enlarged even when used. Moreover, as a result, the rigidity of each of the reinforcing columns 18 to 20 in the core lamination direction is improved, so that even if the base 11 vibrates in the core lamination direction due to an earthquake or the like,
The transformer bodies 12 and 13 do not vibrate with respect to the base 11.

Further, since the reinforcing frame 16 for connecting the upper portions of the two transformer bodies 12 and 13 to each other is provided, the upper central part of the transformer bodies 12 and 13 is also resistant to vibration in the iron core laminating direction due to an earthquake or the like. You will be restricted. Therefore,
Unlike the prior art, the transformer bodies 12, 13 do not bend at the upper center, and as a result, each transformer body 12, 13
13 can be prevented from being twisted.

In the above embodiment, two transformer bodies 12, 13 are arranged side by side. However, three or more transformer bodies may be arranged side by side. In this case, the third and subsequent transformer bodies are arranged. Are the second and third reinforcing columns 1 like the other transformer body 13.
What is necessary is just to support by 9 and 20.

In the above embodiment, the upper ends of the first to third reinforcing columns 18 to 20 are connected to the upper clamp 1.
4a and 14b are welded, but bolts may be used.

[0023]

As is apparent from the above description, according to the transformer of the present invention, one side of the transformer main body is supported by the reinforcing column of the other transformer main body by the short reinforcing column. Therefore, even if the mounting angle of each reinforcing column with respect to the transformer main body is increased, the overall width of the transformer is not increased.
As a result, the rigidity of each column in the core lamination direction is improved, so that the amount of vibration of each transformer body in the core lamination direction can be reduced. In addition, since the reinforcing frame that connects the upper portions of the plurality of transformer bodies is provided, the upper central portion of each transformer body is also restrained against vibration. As a result, the upper central portion of each transformer main body does not bend, thereby preventing each transformer main body from being twisted.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of the present invention.

FIG. 2 is a top view

FIG. 3 is a perspective view of a reinforcing frame.

FIG. 4 is a perspective view showing a first reinforcing column.

FIG. 5 is a perspective view showing a second reinforcing column.

FIG. 6 is a perspective view showing a third reinforcing column.

FIG. 7 shows a conventional example and is equivalent to FIG.

FIG. 8 is a diagram corresponding to FIG. 2;

[Explanation of symbols]

11 is a base, 12 and 13 are transformer main bodies, 12a and 13
a is a laminated iron core, 12b and 13b are windings, 16 is a reinforcing frame, 18 is a first reinforcing column, 19 is a second reinforcing column, 20
Indicates a third reinforcing column.

Claims (1)

(57) [Claims] 1. A two-transformer body comprising two transformer bodies each formed by winding a winding around a laminated iron core and juxtaposed on a base so as to face in a direction in which the cores are laminated. Are connected to each other by a reinforcing frame, and one side and the other side of the upper part of one transformer body in the direction of lamination of the iron core and the base are connected to each other by oblique reinforcing columns, and the other transformer is connected. One side portion of the upper part of the transformer body in the core lamination direction and the reinforcing column on the other side of the one transformer main body are connected by a slanted reinforcing column shorter than the reinforcing column, and A transformer, wherein the other side of the upper part of the transformer body in the stacking direction of the iron core and the base are connected to each other by a slanted reinforcing column.