JP2564904Y2 - Nameplate mounting structure for oil-filled electrical equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nameplate mounting structure for an oil-filled electrical device having an improved structure for mounting a nameplate such as a transformer.

[0002]

2. Description of the Related Art Generally, in oil-filled electrical equipment such as transformers, heat generated inside the equipment is radiated from the tank surface using insulating oil filled in the tank as a medium. The tank has various structures to enhance the heat radiation effect. As one of the structures, there is a method of using a corrugated heat radiating plate in which a sheet-shaped steel plate is bent in a corrugated protruding shape to enlarge a heat radiating area in a small capacity model. As shown in FIG. 5, a corrugated heat radiating plate 1 serving also as a tank side plate is attached to a side surface of the tank. That is, the corrugated heat radiating plate 1 is formed by sequentially bending a thin sheet-shaped steel plate into a corrugated shape, and forming protrusions 2 for heat radiation at regular intervals, and pressing the upper and lower edges of the protrusion 2 respectively.
For example, it is configured by fusing by MAG welding or the like, and connecting the tip portions of the protruding portions 2 with a plurality of bar-shaped reinforcing members 3 for the purpose of aligning the heat radiating plates and improving the strength of the tank.

The corrugated heat radiating plate 1 constitutes a side plate of the tank by fixing the upper and lower end edges thereof to an upper frame 4 and a lower frame 5 of a tank made of a steel plate by welding or the like.

[0004] In oil-filled electrical equipment such as a transformer having such a corrugated heat radiating plate 1, a nameplate has conventionally been generally mounted on a cover. This is because the corrugated radiator plate 1 is a thin steel plate, so that when the nameplate mounting member is fixed to the corrugated radiator plate 1 by welding or the like, very skillful welding work is required, and in some cases, oil leakage from the welded portion may occur. This is because there were cases in which

Here, a name plate mounting structure at the cover portion, which has been conventionally performed, will be described with reference to FIG. In FIG. 6, a fixing boss 7 is fixed on a cover 6 of an oil-filled electric device such as a transformer by welding or the like.
Are attached with fixing bolts 11 and the nameplate 8 is attached to the nameplate attaching plate 10 with the nameplate attaching screws 9.

FIG. 7 shows a cover 6 of an oil-filled electric device such as a transformer.
And 12 and 13 show a high-pressure bushing and a low-pressure bushing, respectively. The nameplate 8 is generally mounted in one of the four directions shown in FIG. 7 according to the specifications of the customer.

[0007]

In the case of this conventional example, it is necessary to fix the fixing boss 7 in advance at a predetermined position on the cover 6 to which the nameplate 8 is to be attached by welding or the like. The nameplate position cannot be changed by changing the specifications. Further, since the edge of the nameplate 8 travels greatly above the cover 6, the vinyl may be torn by the edge of the nameplate 6 when the vinyl is packed.

The present invention has been made based on the above circumstances, and it is not necessary to fix a nameplate mounting part to a predetermined position of a cover or a tank in advance by welding or the like.
Moreover, it is an object of the present invention to provide a nameplate mounting structure for an oil-filled electric device in which a nameplate can be easily changed and an edge portion of the nameplate is not formed above a cover.

[0009]

The nameplate mounting structure of the oil-filled electric device according to the present invention comprises a corrugated heat radiating plate in which a sheet-like thin steel plate is bent into a wave shape and the protruding portions are connected by a bar-shaped reinforcing member to a tank. The oil-filled electric device used as the side plate is characterized in that a name plate is attached to the rod-shaped reinforcement.

In this case, the nameplate is attached to a nameplate mounting surface of a nameplate fixing bracket having a nameplate mounting surface having a threaded portion on an upper portion and a concave portion for fitting the bar-shaped reinforcing member at a lower portion by mounting screws. In addition, the nameplate can be mounted by fitting the bar-shaped reinforcing member into the recess of the nameplate fixing bracket, and supporting the bar-shaped reinforcing member so as to sandwich the bar-shaped reinforcing member.

[0011]

According to the nameplate mounting structure of the oil-filled electrical device of the present invention, the nameplate can be supported and mounted on the bar-shaped reinforcing member connecting the projecting portions of the corrugated heat sink, so that the cover and the tank can be determined in advance. There is no need to fix the nameplate mounting part to the position by welding or the like, and the mounting of the nameplate can be easily changed. Also, the edge of the nameplate is not formed above the cover.

[0012]

1 to 3 show an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 is a front view of the nameplate mounting structure of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIGS. 3A and 3B are front and side views of the nameplate fixing bracket.

In FIG. 1 and FIG. 2, a bar-shaped reinforcing member 3 connecting the protruding portions 2 is provided at the tip of the protruding portion 2 of the corrugated heat sink.
Are fixed by welding, and the nameplate fixing bracket 20 and the nameplate 18 are attached so as to sandwich the rod-shaped reinforcing member 3 therebetween.
As shown in FIG. 3, the nameplate fixing bracket 20 is
9 has a nameplate mounting surface 20b having a screw portion 20a at which the rod-shaped reinforcing member 3 is fitted.
It has a U-shaped concave portion 20c, and a stopper portion 20d at the upper portion that comes into contact with the projecting portion 2 of the corrugated heat sink.

Then, the nameplate fixing bracket 20 is inserted into the recess 2 thereof.
0c fits the bar-shaped reinforcing member 3, and the stopper 20d is arranged so as to abut on the tips of at least two protrusions 2. Then, the nameplate 18 is fastened and fixed to the nameplate mounting surface 20b having the screw portion 20a of the nameplate fixing bracket 20 with the nameplate mounting screw 19, so that the rod-shaped reinforcing member 3 is sandwiched between the recess 20c of the nameplate fixing bracket 20 and the nameplate 18. 18 is fixed. When screwing in the nameplate mounting screw 19, the stopper 20d
Abuts against the tip of the protruding portion 2 of the corrugated heat sink, and the rotation of the nameplate fixing bracket 20 is prevented.

According to the above embodiment, the following effects can be obtained. That is, since it is not necessary to previously fix the nameplate mounting parts to predetermined positions of the cover and the tank by welding or the like, the mounting position of the nameplate can be freely changed. In addition, since the edge of the nameplate is not formed above the cover, the vinyl is not broken when the transformer is packed in vinyl.

FIGS. 4 (a) and 4 (b) show another embodiment of the present invention. The difference from the above embodiment is that the lower side of the concave portion 20c fitted to the bar-shaped reinforcing member 3 is also provided. Nameplate mounting surface 20b
And the provision of a stopper 20d which comes into contact with the distal end of the corrugated heat sink 2. According to this embodiment, in addition to the effects of the above-described embodiment, the rotation can be effectively prevented even with respect to the rotational force acting on the lower part of the nameplate 18 in the direction of the wave radiating plate.

[0017]

[Effects of the Invention] As is clear from the above description, the nameplate mounting structure of the oil-filled electric device of the present invention has a nameplate and a screw portion.
With a nameplate mounting surface at the top
Use the mounting screws on the nameplate mounting surface of the nameplate fixing bracket at the bottom.
And attach the nameplate fixing bracket and nameplate to the nameplate fixing bracket.
The bar-shaped reinforcement is fitted into the concave part and sandwiches the bar-shaped reinforcement.
As it was supported by the rod-shaped reinforcement body
The number of parts for mounting is small and the mounting workability is good. <br/> It is not necessary to fix the nameplate mounting parts in advance at the predetermined position of the cover or tank by welding etc. The mounting position can be changed, and further, there is an effect that the vinyl is not broken at the time of vinyl packing.

[Brief description of the drawings]

FIG. 1 is a front view showing a structure for mounting a nameplate of an oil-filled electric device according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line AA of FIG. 1;

3A and 3B show a nameplate fixing bracket used in an embodiment of the present invention, wherein FIG. 3A is a front view and FIG.

FIG. 4 shows another embodiment of the present invention, wherein (a) is a front view,
(B) is a side view

FIG. 5 is a perspective view of an oil-filled electric equipment tank constituted by a corrugated heat sink.

FIG. 6 is a diagram showing a nameplate mounting structure in a cover portion of a conventional example.

FIG. 7 is a front view of a cover of a conventional oil-filled electric device.

[Explanation of symbols]

1 is a corrugated heatsink, 2 is a protruding portion, 3 is a bar-shaped reinforcement, 9.1
Reference numeral 9 denotes a nameplate mounting screw, 18 denotes a nameplate, 20 and 21 denote nameplate fixing brackets, 20a denotes a screw portion, 20b denotes a nameplate mounting surface, 20c denotes a U-shaped concave portion, and 20d denotes a stop portion.

Claims (1)

(57) [Scope of request for utility model registration] 1. A allowed bending a sheet of thin steel plate in a waveform shape, the oil-filled electrical apparatus using between the projecting portions of the waveform radiating plate which is connected with the rod-like reinforcing member as a tank side plate, threaded portion
A nameplate mounting surface with
Nameplate fixing bracket with a concave part at the bottom
Nameplate attached to the nameplate mounting surface of the tool with mounting screws
The nameplate fixing bracket and the nameplate are
The rod-shaped reinforcement is fitted into the recess of the fixture, and the rod-shaped reinforcement is
Name plate mounting structure for oil-filled electrical equipment characterized by being provided