JPS6125232Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in unit type capacitor devices.

In addition to the capacitor, the unit type capacitor device includes a series reactor for improving voltage waveforms and suppressing inrush current, a discharge coil or discharge resistor connected in parallel to the capacitor, and oil volume adjustment for the capacitor and series reactor. It consists of devices.

In general, the capacitor capacity is relatively small 150 ~
As shown in Figure 1, the 2000KVA model is designed to reduce the installation area and simplify installation.
A reactor container 2 is mounted on the top of the capacitor container 1, and the oil amount regulator 3 for the capacitor and the oil amount regulator 4 for the series reactor are both connected to the reactor container 2.
The oil volume regulators 3 and 4 are arranged side by side on the upper part of the oil volume regulators 3 and 4, and are covered with an integrated protective cover 5. Here, the condenser oil amount regulator 3 is connected to the condenser container 1 through the oil conduit pipes 6 and 7 through a connecting portion 8 and an oil conduit pipe 9. Note that 10 is a capacitor, 11 is a capacitor connection terminal, 12 is a reactor connection terminal, 13 is a series reactor, 14 is a heat sink, 1
5 is a discharge coil, 16 is a main circuit connection terminal, 17
is an oil conduit that connects the reactor container 2 and the oil amount regulator 4. The internal circuit diagram of this unit type capacitor device is shown in FIG.

However, due to the recent development of dielectric materials with excellent properties and improvements in the method of assembling capacitor elements, capacitor containers have become much smaller, and have become approximately the same size as reactor containers. For this reason, if the capacitor container 1' is manufactured using the conventional structure, the capacitor container 1' will be downsized as shown in FIG. The reactor container 2 is mounted on the tower by extending the upper lid 18 of the container to the opposite side of the oil conduit 9 (to the left in the figure), which (1) is unfavorable in terms of appearance.

(2) The structure of the capacitor container becomes complicated, which increases the cost.

(3) The shape is unstable and there is a risk of it falling over, making it difficult to commercialize it.

There were other drawbacks.

The present invention was devised to eliminate these drawbacks, and an embodiment thereof is shown in FIG.

In the present invention, as shown in FIG. 3, the upper lid 18 of the capacitor container in FIG.
Instead of the oil conduit 9 provided in the connector 8, a connector 19 is provided in the upper lid 18' of the capacitor container 1', as shown in FIG. in this case,
The vacuum impregnation treatment of the capacitor 4 is performed when the capacitor container 1' is attached with the upper lid 18' and the connection part 8, and the series reactor 13 and the reactor container 2 are not yet mounted on the column.
through.

After vacuum impregnating the capacitor and conducting an electrical test in this way, connector 1
9 is opened, and the reactor container 2 containing the series reactor 13 is mounted and attached onto the capacitor container 1'. In this state, connect the connector 20 on the side wall of the connection part 8 and the oil conduit 7 in the reactor container 2.
The intermediate connecting portion 8 is vacuum impregnated with the connector 21 at the upper end. After the vacuum impregnation process is completed, the connector 20 is sealed off, and the oil conduit 6 of the oil amount regulator 3 is connected to the connector 21 at the upper end of the oil conduit 7.

With this configuration, the insulating oil inside the capacitor container 1' is removed from the open connector 19.
The oil flows through the connecting portion 8, joins with the insulating oil inside, and flows through the oil conduits 7 and 6 to the oil amount regulator 3. Note that the insulating oil in the reactor container 2 is connected to the oil amount regulator 4 through an oil conduit 17 at the same time as in FIGS. 1 and 3. Also, the internal circuit connections are the same as in the case of Fig. 1, that is, the
As shown in the figure.

As described above, both the reactor container 2 and the oil amount regulators 3 and 4 provided above can be mounted on the upper center of the condenser container 1'.
As a result, (1) the appearance is improved and the product is stable, eliminating the risk of it falling over during work and transportation;

(2) There is no need to extend the top cover of the capacitor container to create a complicated structure as shown in FIG. 2, and it is advantageous in terms of cost.

(3) An oil conduit between the capacitor container and the connection part is not required.

(4) Since a sealed connector is used for the connector 20 on the side of the connection part, oil leakage during work is eliminated.

(5) Furthermore, it is also possible to eliminate the connector 20 and perform the vacuum impregnation process only with the connector 21 on the top of the reactor container.

Benefits such as:

As explained above, in accordance with the present invention, a connector is provided on the top cover of the capacitor container instead of an oil conduit between the capacitor container and the connecting portion, and the insulating oil is allowed to freely flow directly into the connecting portion. It is possible to prevent the reactor container from being shifted to one side due to the downsizing of the reactor, and many benefits can be obtained.

[Brief explanation of the drawing]

1 and 3 are sectional views showing a conventional unit type capacitor device, FIG. 2 is a circuit diagram showing internal connections, and FIG. 4 is a sectional view showing an embodiment of the present invention. 1, 1'...Capacitor container, 2...Reactor container, 8...Connection part, 10...Capacitor, 1
3...Series reactor, 19, 21...Connector.

Claims (1)

[Scope of utility model registration request] In a capacitor device in which a reactor container is placed on top of a capacitor container, and a connecting portion between the capacitors housed in each of the containers and the series reactor is provided between the two containers, an insulating oil flow tube that opens directly into the intermediate connecting portion is provided. A unit type capacitor device characterized in that a connector is provided in the capacitor container.