JPH0661065A - Transformer - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a sufficient seismic effect while achieving overall weight reduction and installation area reduction. [Structure] Reinforcing members 11 of a length extending to both sides are attached to the upper part of the contents main body 5 in the tank 6, and upper ends of oblique supporting members 21 are attached to both ends of the reinforcing members 11 via the walls of the tank 6. By fixing the lower end portion of the slanting support member 21 to the base member 22, the force due to the shaking of the main body 5 during an earthquake or the like is directly borne by the slanting support member 21, and the burden on the tank 6 is eliminated. Reinforcement of the tank 6 is unnecessary. Further, the length of the oblique support member 21 can be shortened, the lower end of the oblique support member 21 can be located inside, and the strength of the oblique support member 21 can be increased to reduce the cross-sectional shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake resistant transformer.

[0002]

2. Description of the Related Art Conventionally, for example, in an oil-filled transformer, as shown in FIG. 3, a content body 5 including an iron core 1, a coil 2, and iron core tightening fittings 3 and 4 is housed in a tank 6. Then, the tank 6 is prevented from being displaced by the displacement preventing component 7 at the bottom thereof, while the upper portion of the main body 5 is fixed to the tank lid 8 in a suspended state by a plurality of suspension rods 9. The tank 6 contains oil 10 as a cooling medium.

In this case, the main body 5 of the contents and the tank lid 8
Since the and are integrated, the parts taken out through the tank lid 8 and the contents main body 5 can be easily connected, and they are standardly adopted because of the ease of assembly.

However, in terms of earthquake resistance, the main body 5 of the contents is supported on the tank lid 8 by a long suspension rod 9, and
The lower part has a defect that it is weak because it only rests on the bottom of the tank 6 and is prevented from shifting. In this case, there is also a method of fixing the content main body 5 to the bottom of the tank 6 by bolting or the like, but in such a case, an opening for assembling work must be provided at the bottom of the tank 6 It weakens the strength of 6. Therefore, in the case of an earthquake-proof type transformer, the structure shown in FIG. 4 is generally used.

That is, the contents main body 5 has
Attach the reinforcing member 11 that extends to the left and right in the figure and has a length that extends across the opposite inner wall surfaces of the tank 6 at both ends.
Both ends of the reinforcing member 11 are attached to the attachment seats 12 attached to the inner wall surfaces of the tank 6 facing each other.

By doing so, the contents main body 5
The tank 6 bears the force due to the swaying through the reinforcing member 11, so that the swaying of the main body 5 can be suppressed. In this case, the tank 6 is generally manufactured so as to withstand the vacuum pressure at the time of lubrication, the filling pressure of nitrogen gas, etc., and the pressure due to thermal expansion during operation, the excessive pressure at the time of abnormality, etc. It is a good method because it has sufficient strength against normal seismic force.

However, for a high-level earthquake such as seismic class A, which is said to be associated with nuclear power-related equipment, the above structure is not sufficient and further reinforcement is required.
The structure is also shown in FIG. 4, that is, the tank 6
Since the wall is reinforced, the upper end of the slanting support member (so-called squeeze bar) 14 is attached to the upper end of the wall, and the lower end of this slanting support member 14 is attached to the end of the base member 15. is there.

By doing so, the force due to the shaking of the main body 5 is once borne by the tank 6 and is transmitted to the oblique supporting member 14 through the reinforcement 13 of the tank 6, whereby the tank 6 and the oblique shape are Both of the supporting members 14 can withstand the seismic force.

[0009]

However, the above-mentioned one also has the following drawbacks. That is,
Since the upper end of the oblique support member 14 is attached to the upper end of the tank 6 and there is a distance between the upper end of the oblique support member 14 and the reinforcing member 11 attached to the intermediate portion of the tank 6, the contents main body 5 is attached to the wall of the tank 6 between them. The force due to the shaking of the body may cause deformation, and without causing this deformation, the contents body 5
In order to transmit the force due to the shaking of the tank 6 to the oblique support member 14, the wall of the tank 6 must be provided with a reinforcement 13, which results in a large weight.

Further, the installation area is large as a whole, the length of the oblique support member 14 is also large, and the weight is further increased. This will be described in detail. The supporting effect of the oblique supporting member 14 increases as the mounting angle θ of the supporting member 14 increases, and the earthquake resistance increases. However, when the angle θ is increased, the position of the lower end portion of the oblique support member 14 is far apart from the tank 6, and the entire installation area is increased. Therefore, the mounting angle θ of the oblique support member 14 is generally set to about 30 degrees in consideration of the balance between the installation area and the earthquake resistance. However, even if the angles are the same, if the oblique support member 14 is attached from a high position, the lower end portion will be located further outside than that attached from a lower position, and the installation area will be larger. or,
If so, the length of the oblique support member 14 also becomes longer, and if it becomes longer, the strength is inversely proportional to the square of the length, and the bending is proportional to the cube of the length. The cross-sectional shape of the member 14 has to be increased, and the weight is further increased.

The present invention has been made in view of the above circumstances, and therefore an object thereof is to provide a transformer capable of reducing the overall weight and the installation area of an earthquake-resistant structure. is there.

[0012]

In order to achieve the above object, in the transformer of the present invention, a reinforcing member having a length extending to both sides is attached to the upper part of the main body of the contents, or an upper part of the main body of the contents is attached. It is provided with a length that extends to both sides, and the upper end of the slanting support member is attached to both ends of these through the tank wall or directly, and the lower end of this slanting support member is fixed to the base member or the foundation part. It is characterized by

[0013]

According to the above-mentioned means, the force due to the swinging of the main body of the contents is directly received by the oblique supporting member and is borne by the oblique supporting member not only through the tank wall but also through the tank wall. Therefore, the tank does not bear the force due to the shaking of the main body of the contents, and there is no possibility of deformation, so that the reinforcement thereof can be eliminated. Further, since the mounting position of the upper end portion of the slanting support member can be lowered, the length of the slanting support member can be shortened, and the lower end portion of the slanting support member can be located inside, and the slanting support member Since the strength can be increased, the cross-sectional shape can be reduced.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In FIG. 1, the same parts as those in FIGS. 3 and 4 described above are designated by the same reference numerals, and accordingly, the main body 5 including the iron core 1, the coil 2, and the iron core tightening fittings 3, 4 and the like. Is stored in the tank 6 and is prevented from being displaced by the displacement preventing component 7 at the bottom of the tank 6. Further, oil 10 as a cooling medium is stored in the tank 6, and a tank lid 8 is provided on the upper surface of the tank 6. And, in the main body 5 of contents,
Reinforcing member 1 having a length that extends to the left and right sides in the figure, and has both ends extending to the full extent between the opposing inner wall surfaces of tank 6 at the upper part thereof.
1 is attached, and both ends of the reinforcing member 11 are connected to the tank 6
It is attached to the mounting seat 12 mounted on the inner wall surface facing the above.

Therefore, the upper end portion of the oblique support member 21 is provided on the portion of the tank 6 outside the mounting seat 12 so that the center of the end face of the slanting support member 21 coincides with the connecting point of the mounting seat 12 with the reinforcing member 11. Therefore, the upper end of the oblique support member 21 is attached to both ends of the reinforcing member 11 via the wall of the tank 6. On the other hand, the lower end of the oblique support member 21 is the base member 2
It is attached to the end of 2.

In the case of the above structure, when a shake is transmitted to the main body 5 of the contents due to an earthquake or the like, the main body 5 of the contents tends to fall down with the lower part thereof, which is only stopped by the bottom of the tank 6, as a fulcrum. Therefore, the reinforcing member 11 attached to the wall of the tank 6 from the upper part of the main body 5 tries to push the wall of the tank 6,
Since the slanting support members 21 are attached to both ends of the reinforcing member 11 via the wall of the tank 6, the force due to the shaking of the content main body 5 is directly received by the slanting support members 21. It is borne by the member 21. Thus, the tank 6 does not bear the force due to the shaking of the main body 5 of the contents, and the risk of the deformation of the tank 6 is eliminated, so that the reinforcement of the tank 6 can be omitted and the weight can be reduced.

Further, since the mounting position of the upper end portion of the slanting support member 21 can be made lower than the conventional one in accordance with the position of the reinforcing member 11, the length of the slanting support member 21 can be shortened, and the slanted support member 21 can be shortened accordingly. Since the position of the lower end of the shape-supporting member 21 can be set to the inner side, the installation area can be reduced. In addition, in this case, since the length of the oblique support member 21 can be shortened, the strength of the oblique support member 21 can be increased, so that the cross-sectional shape can be reduced and the weight can be further reduced.

Even if the position of the oblique support member 21 is lowered, the load applied to the tank 6 at the time of an earthquake is only the weight of the tank 6 and the weight of the oil 10. I can bear it.

In contrast to the above, FIG. 2 shows a different embodiment of the present invention, and if only the differences from the above embodiment are described, the upper part of the main body 5 is shorter than the reinforcing member 11 described above. Is attached to the left and right sides in the figure, and the upper end of the oblique support member 21 penetrating the wall of the tank 6 is directly attached to both ends of the reinforcing member 31, and the lower end of the oblique support member 21 is attached. Is attached to the end of the base member 32.

Even in this case, the oblique supporting member 21 can directly receive the force due to the shaking of the main body 5,
Moreover, since the mounting position of the slanting support member 21 can be lowered, the same effect as described above can be obtained, and a seal for preventing the oil 10 from leaking from the portion of the wall of the tank 6 where the slanting support member 21 penetrates. However, it is possible to position the oblique supporting member 21 as a whole on the inner side of the above,
Since the base member 32 can be shortened, the installation area can be further reduced.

In addition, the present invention is not limited to the embodiment described above and shown in the drawings, and in particular, air, nitrogen, SF6 gas or the like other than oil 10 is used as the cooling medium contained in the tank. In addition, the lower end of the slanted support member may be fixed to the foundation (transformer installation surface) instead of the base member. Instead, the upper parts of the main body of the contents (such as the iron core tightening metal fittings 3) are provided in such a length that they are extended to both sides, and the upper ends of the slanting support members are directly attached to the both ends of the parts through the tank wall. It may be carried out by appropriately changing it within a range not departing from the gist.

[0022]

As is clear from the above description, in the transformer of the present invention, in the case where the main body of the contents is accommodated in the tank together with the cooling medium, the length of the transformer is extended to the both sides above the main body of the contents. The member is attached, or the upper part of the main body of the body is provided with a length that extends to both sides, and the upper end of the oblique support member is attached to both ends of these parts through the tank wall or directly.
By fixing the lower end of this oblique support member to the base member or the foundation, while obtaining a sufficient earthquake resistance effect,
It has an excellent effect that the overall weight can be reduced and the installation area can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view showing a different embodiment of the present invention.

FIG. 3 is a vertical sectional view showing a conventional example of a general transformer.

FIG. 4 is a vertical sectional view showing a conventional example of an earthquake-proof transformer.

[Explanation of symbols]

5 is a main body, 6 is a tank, 10 is oil (cooling medium), 1
Reference numeral 1 is a reinforcing member, 21 is an oblique supporting member, 22 is a base member, 31 is a reinforcing member, and 32 is a base member.

Claims (1)

[Claims] 1. A container containing a cooling medium containing a main body, wherein a reinforcing member having a length extending to both sides is attached to an upper part of the main body, or upper components of the main body are extended to both sides. It is characterized in that it is provided with a length, the upper end of the oblique support member is attached to these both ends via the tank wall or directly, and the lower end of the oblique support member is fixed to the base member or the foundation part. Transformer.