JPS6262441B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oil-filled electromagnetic induction device including a container for storing windings such as a transformer or a reactor.

Conventionally, oil has often been used in electromagnetic induction equipment because oil has excellent electrical insulation and cooling ability. Therefore, among the components of the equipment, the winding core and the like that generate loss (heat) are placed in oil. 2
Both are provided in the insulating oil 3. Note that 4 is a cooling device, 5 is a bushing, and 6 is a tank.

However, recent advances in material technology have made remarkable progress. For example, the loss in iron core materials has become extremely small, so there is no longer any need to place the iron core in insulating oil for cooling purposes as it generates almost no heat. .

This invention was made with attention to this, and by storing the winding wire in a container filled with insulating oil and combining it with a magnetic member through this container, it is possible to streamline and
The purpose is to obtain a downsized oil-filled electromagnetic induction device.

FIG. 2 is a cross-sectional view showing an embodiment of the present invention, in which 1 to 5 are the same as those in the conventional example, and 7 is an insulating container for housing the winding 1 with built-in insulation. , 7a, 7b are the cooling device 4 and the container 7
The pipe 8 is an iron core made of a magnetic material and is made of an ultra-low loss amorphous material.
It is combined with the winding 1 via the container 7. In addition, container 7
The reason why is made of an insulating material is to prevent the container 7 from being heated by the main magnetic flux or leakage magnetic flux.

In the configuration as described above, the magnetic member 8 that does not need to be cooled is provided outside the container 7, and the winding 1 that requires cooling is housed in the container 7, so that the dimensions of the container 7 are reduced. Therefore, the amount of insulating oil 3 is reduced, and therefore the required capacity of the cooling device is also reduced.

In the above description, a case has been described in which the winding 1 with built-in insulation is housed in the container 7, but it goes without saying that the present invention can also be used in a case where a winding without insulation is housed in the container. In addition, although the above description has been made regarding the case of a transformer winding and an iron core, it goes without saying that it can also be used for a reactor coil and a magnetic shielding iron core.

As explained above, according to the present invention, the volume of the container is reduced, so the amount of insulating oil can be reduced, and the capacity of the cooling device can also be reduced, and the overall size of the equipment can therefore be reduced, thereby reducing costs. Furthermore, even if a defect should occur in the magnetic member such as the iron core, it is located outside the container and can be easily repaired.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the structure of a conventional oil-filled electromagnetic induction device, and FIG. 2 is a sectional view showing an embodiment of the present invention. In the figure, 1 is a winding, 3 is an insulating oil, 7 is a container, and 8 is a magnetic member. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] 1 A winding, an insulating container containing the winding and filled with insulating oil, and an amorphous magnetic member that is combined with the winding through the container and provided in the outside air, and the winding is caused by the insulating oil. Oil-filled electromagnetic induction equipment that can cool the wire.