JP2577388Y2 - Gas insulated electrical equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention is based on the idea that a plurality of electric devices are housed in the same tank filled with insulating gas, and the insulating gas is discharged from the upper part of the tank, cooled and then introduced from the lower part of the tank. Further, the present invention relates to a gas-insulated electric device including a plurality of cooling devices for supplying electric devices forming a pair.

[0002]

2. Description of the Related Art FIG. 2 is a diagram showing a schematic configuration of a conventional gas-insulated electric device of this kind. In the figure, reference numeral 1 denotes a tank in which an insulating gas is filled, and a gas outlet 1a, 1b is provided in an upper part, and a gas inlet 1c, 1d is provided in a lower part.
Reference numeral 3 denotes first and second electric devices housed in the tank 1. Reference numeral 4 denotes a gas outlet 1a at one end and a first blower 5 at the other end.
The first cooling device 6 communicates with the gas inlet 1c through the gas outlet 1b at one end and the second blower 7 at the other end at the gas outlet 1b.
The second cooling device communicates with the gas inlet 1d through the second cooling device.

In the conventional gas-insulated electrical equipment configured as described above, when both electrical equipments 2 and 3 are operated, the blowers 5 and 7 also start operating, as indicated by arrows in the figure. The insulating gas in the tank 1 is led from the gas outlets 1a and 1b to the cooling devices 4 and 6, respectively, is cooled by the cooling devices 4 and 6, and then is introduced through the blowers 5 and 7 respectively.
c and 1d are returned to the tank 1 again to cool the electric devices 2 and 3 forming a pair. Hereinafter, by repeating the same operation, the electric devices 2 and 3 are constantly cooled and the operation is continued.

[0004]

Since the conventional gas-insulated electric equipment is constructed as described above, the second electric equipment 3 is temporarily stopped and the second blower 7 is stopped. In this case, since the flow of the insulating gas is formed by the operation of only the first blower 5, as shown by an arrow in FIG. 3, after being guided to the first cooling device 4 from the outlet 1a and cooled, the blower 5 Is returned from the inlet 1c into the tank 1 through the inlet, and cools the first electric device 2, but the entire flow of the cooling flow by the blower 5 does not flow to the first electric device 2 side. Part of the flow also flows to the second electric device 3 side and the second cooling device 4 side, so that the required cooling flow cannot be obtained in the first electric device 2, and the performance is reduced due to insufficient cooling. There was a point.

The present invention has been made to solve the above-described problems. Even if one of the electric devices stops operating and the cooling device forming the pair stops operating, the operation side of the operating device is stopped. It is an object of the present invention to provide a gas-insulated electric device that does not lower the performance while maintaining the cooling effect of the electric device.

[0006]

The gas-insulated electrical apparatus according to the present invention is provided with a partition plate at the lower part of a tank, and the cooled electrical equipment introduced from each cooling device is paired with the electrical equipment. It is configured to be able to flow only to

[0007]

The partition plate of the gas-insulated electric device of the present invention is provided at the lower part of the tank, and guides the cooled insulating gas introduced from each cooling device to the paired electric devices.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a gas-insulated electric device according to an embodiment of the present invention. In the figure, a tank 1, outlets 1a, 1b, inlets 1c, 1d, first and second electric devices 2, 3, first and second cooling devices 4, 6, first and second blowers 5 , 7 are the same as those of the conventional device in FIG. Reference numeral 8 denotes a partition plate provided at the lower part of the tank 1. The insulating gas cooled by the first cooling device 4 and introduced from the inlet 1c is supplied to the first electric device 2 side and the second cooling device. The insulating gas cooled at 6 and introduced from the inlet 1d regulates the flow of the insulating gas so as to flow to the second electric device 3 side.

In the gas-insulated electric apparatus according to the embodiment constructed as described above, when both electric apparatuses 2 and 3 are operated, the blowers 5 and 7 are operated, similarly to the conventional apparatus in FIG. Starting, the insulating gas in the tank 1 is guided from the gas outlets 1a, 1b to the cooling devices 4, 6, respectively.
After being cooled by the cooling devices 4 and 6, the blowers 5 and
7 again returns to the tank 1 from the inlets 1c and 1d,
The insulating gas whose flow is regulated by the partition plate 8 and is introduced from the inlet 1c is directed to the first electric device 2 side,
The insulating gas introduced from 1d flows toward the second electric device 3 and cools both electric devices 2 and 3, respectively.

Next, if the second electric device 3 stops operating and the second blower 7 stops, the flow of the insulating gas is formed by the operation of only the first blower 5. As shown by the arrow in FIG. 1, after being guided from the outlet 1a to the first cooling device 4 and cooled, it is returned to the tank 1 from the inlet 1c via the blower 5, and the flow is controlled by the partition plate 8. Is regulated and does not flow to the second electric device 3 and the second cooling device 6 side, and the first electric device 2
Since all the air flows to the side, the cooling of the first electric device 2 is not hindered at all, and therefore the performance of the first electric device 2 is not reduced.

[0011]

As described above, according to the present invention, the partition plate is provided at the lower part of the tank so that the cooled insulating gas introduced from each cooling device can flow only to the paired electric devices. Therefore, even if one of the electric devices stops operating and the cooling device forming the pair stops operating,
It is possible to provide a gas-insulated electrical device that does not reduce the performance while maintaining the cooling effect of the operating electrical device.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a gas-insulated electric device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a schematic configuration of a conventional gas-insulated electric device.

3 is a diagram showing a state of a flow of an insulating gas when one of the electric devices stops operating and a cooling device forming a pair stops in the conventional gas-insulated electric device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tank 2 1st electric equipment 3 2nd electric equipment 4 1st cooling device 5 1st blower 6 2nd cooling device 7 2nd blower 8 Partition plate

Claims (1)

(57) [Scope of request for utility model registration] 1. A tank filled with an insulating gas, a plurality of electric devices housed in the tank, and a pair of each of the electric devices. A plurality of cooling devices that are introduced to the outside of the tank from the lower part of the tank after being led out of the tank and cooled,
A gas-insulated electric device, wherein a partition plate is provided at a lower portion of the tank so that the cooled insulating gas introduced from each of the cooling devices can flow only to the electric device forming a pair. Equipment and devices.