JPS5850008B2 - stationary induction appliance - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stationary induction electric appliance such as a transformer or a reactor, in which a pocket in which a bushing is attached can be effectively reinforced.

Stationary induction appliances, such as transformers, generally
As shown in the figure, there is a container 1 consisting of a lower container 2A and an upper container 2B that house the transformer contents (not shown), and a bushing 3.
A pocket 4 is provided that projects upward from the upper container 2B in order to attach this, and a pressure relief pipe, a conservator,
It is configured with a cooler (not shown) and the like.

In the transformer configured in this manner, the bushing 3 and pocket 4 are deformed by the weight of the earthquake, not only by simple bending deformation due to their weight, but also by the deformation of various vibration elements, as shown by the broken line in FIG. do.

For this reason, conventionally, as shown in FIGS. 1 and 2, support metal fittings 5 have been provided between each pocket 4 for reinforcement.

However, the unstable part that is most likely to be damaged by the loading force during an earthquake is the joint between the upper container 2B and the pocket 4.
Even if they are connected and supported above the pockets 4, there is a drawback that the entire pockets 4 are deformed by the force of falling down.

For this reason, the upper container 2B must be sufficiently reinforced, but there are constraints such as structural and transport limitations, and there is a problem in that it is not easy to increase its rigidity.

In addition, as another measure for reinforcing the pockets 4, as shown in FIGS. 3 and 4, supporting metal fittings 5 are provided from the reinforcing beams 6 of the upper container 2B to support each pocket 4. .

In this structure, not only must the upper container 2B be sufficiently reinforced as in the examples shown in FIGS. 1 and 2, but it is also effective against deformation of the pocket 4 in the Y direction; It had little effect on deformation in the direction.

The purpose of the stationary induction electric appliance of the present invention is to effectively reinforce the pocket protruding from the top surface of the tank where the bushing is attached.
The objective is to provide static induction electric appliances with excellent earthquake resistance.

In order to achieve the above object, in the stationary induction electric appliance of the present invention, when the pocket in which the bushing is established by protruding from the upper surface of the container is reinforced with a support member fixed to the outer surface, the support member is attached to the container. It is placed on the side and one end is attached to the reinforcing beam, and a pair of holding metal fittings having a surface that matches the outer surface of the pocket is fixed to the pocket.The holding metal fittings are fixed to the other end of the above-mentioned support member to hold the pocket. It is characterized by supporting the pocket to reduce deformation of the pocket during an earthquake.

An embodiment of the present invention will be described below using examples of transformers shown in FIGS. 5 to 9.

In these figures, the same reference numerals as those in conventional FIGS. 1 to 4 indicate the same or equivalent parts.

In the example of the transformer of the present invention, the horizontal reinforcing beams a10 of the two lower containers forming the container 1 for storing the contents of the transformer include:
One end of a pair of earthquake-resistant support members 7 made of square steel or the like is attached, and a pocket 4 in which a bushing 3 is provided is arranged at the other end of the support member 7 to support the support member 7 via a connecting fitting 8. ing.

The holding fitting 8 is formed to have a surface that conforms to the outer surface of the pocket 4, and supports the pocket 4 with this surface to provide steadiness.

That is, the lower end of the support member 7 is connected to the lower container 2A of the transformer.
In this embodiment, as shown in FIG. 9, the horizontal reinforcing beam 9
and 10 etc. via a mounting seat 11 with a bolt 12 or the like.

This mounting seat 11 is a seat 11a for transporting the transformer body.
It is also possible to use

In this example, the support members 7 are comprised of a pair arranged at a predetermined distance apart.

As shown in FIG. 8, a pair of seats 13 are arranged on the outer periphery of the pocket 4 along this curved surface.

The seat 13 and the upper end of the support member 7 are fixed by Pol N4, 15 etc. via a pair of holding metal fittings 8. Each holding metal fitting 8 has a curved surface along the outer circumferential surface of the pocket 4. It is installed so that it is sandwiched between both sides.

Therefore, as shown in FIGS. 8 and 9, the pocket 4 is protected against deformation in the X and Y directions by the pair of holding fittings 80.
Since the acting force is applied to the curved surface, no tensile force or shearing force acts on the side plate of the pocket 4, and the bolt 15 and the pocket 4
This eliminates local damage to the side plates and allows safe support.

Furthermore, the moment of inertia and cross-sectional area of the pocket 4 are expressed as ■1 and Sl, the moment of inertia and cross-sectional area of each support member 7 are expressed as ■2 and S2, and the dimension between the center of the pocket 4 and the support member 7 is expressed as 1. Then, the composite moment of inertia of area (X) with respect to the X-axis becomes (1) + (2) + 12 x 82.

Also, for the composite moment of inertia ■y with respect to the Y axis, since the neutral axis is Y'-Y', the dimensions between the center of the pocket 4 and the neutral axis and between the neutral axis and the support member 7 are 11,
If it is 12, ■y is 11+1? XS1+I2+1≦×
It becomes 82.

Therefore, the composite cross-sectional moment of inertia) IX and y can be made equal by arbitrarily selecting each dimension 1 + 11 + '2.

In addition, its value is generally the composite moment of inertia of area ■, and since it is possible to obtain about twice the moment of inertia of area compared to when it is used alone, the rigidity of the joint between the upper container 2B and the pocket 4 can be greatly increased. can be increased.

If the supporting members 7 are connected using connecting fittings 16 as shown in FIGS. 5, 6, and 8, the entire structure will be gate-shaped.
The rigidity of the support member 1 can be made thicker, and the earthquake resistance can also be further improved.

In the above example, one end of the support member 7 is attached to the horizontal reinforcing beams 9 and 10 of the lower container 2A, but the upper container 2B
Of course, it may also be attached to the reinforcing beam.

In addition, it is not necessary to provide a pair of support members for attaching one end to the container as in the above embodiment, but use one support member and attach a common support member to the upper end side of the support member, and each holding metal fitting is attached to the common support member. 8 may be installed, and in this case, the structure can be further simplified.

In the embodiment shown in FIG. 10, one end of a pair of supporting members 7 is connected to horizontal reinforcing beams 9 and 1 provided in the longitudinal direction of the transformer container 1.
0, a holding fitting 8 is integrally attached to the outer periphery of the pocket 4 by welding, and this is attached to the upper end of the supporting member 7 with a bolt 14.

Further, in the embodiment shown in FIG.
0, and between the two is a connecting fitting 1 that spans the container.
6, and a holding fitting 8 is attached to this.

In any of these, by arbitrarily determining the dimension 1, the rigidity of the pocket 4 in the X direction and the Y direction can be made equal, and the earthquake resistance can be improved.

By configuring a stationary induction electric appliance as in the present invention, the pocket in which the bushing is attached can be reinforced with a simple configuration using a reinforcing beam of the container, a supporting member, and a pair of holding members, and earthquake resistance can be greatly improved. can be improved.

[Brief Description of the Drawings] Fig. 1 is a plan view of a conventional stationary induction electric appliance, Fig. 2 is a side view of Fig. 1, and Fig. 3 is a plan view of another conventional stationary induction electric appliance.
Fig. 4 is a side view of Fig. 3, Fig. 5 is a plan view showing a stationary induction electric appliance which is an embodiment of the present invention, Fig. 6 is a side view of Fig. 5, and Fig. 7 is a side view of Fig. 5. 8 is an enlarged view of FIG. 5, FIG. 9 is an enlarged view of FIG. 7, and FIGS. 10 and 11 are plan views showing other embodiments of the present invention. 1...Container, 2A, 2B...Lower and upper containers, 3...Bushing, 4...
Pocket, 7...Supporting member, 8...Holding metal fitting, 9, 10...Reinforcement beam, 16...
・Connection fittings.

Claims (1)

[Claims] 1. An electric appliance is housed in a container provided with a reinforcing beam on the outer surface,
A stationary induction electric appliance in which a pocket is provided that protrudes upward to the upper surface of the container, a bushing is established in the pocket, and a supporting member is fixed to the outer surface of the pocket to reinforce the vibration damping, wherein the supporting member is disposed on a side surface of the container. and one end of the support member was attached to the reinforcing beam, a pair of holding metal fittings having a surface matching the outer surface of the pocket was fixed to the pocket, and the holding metal fittings were fixed to the other end of the support member to support the pocket. A stationary induction electric appliance characterized by: 2. The stationary induction electric appliance according to claim 1, wherein a pair of the support members are arranged on the side surface of the container, and each support member is provided with a holding metal fitting, and the supporting members are connected by a connecting metal fitting. 3. The stationary induction electric appliance according to claim 1, characterized in that a common support member is attached to the other end of the support member attached to the reinforcing beam, and a pair of holding metal fittings are arranged on the common support member.