JPS5918663Y2 - capacitor device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a condenser device using a fluid such as SF6 gas as a dielectric.

1 to 3 show capacitor type potential transformers.

In FIGS. 1 to 3, 1 is a transformer main body, 2 is a main capacitor, and 3 is a voltage dividing capacitor.

FIG. 4 shows the main capacitor 2 shown in FIGS. 1-3.

In FIG. 4, 4 is a tank containing SF6 gas 5, 6 is a center conductor supported by an insulating spacer, and 8
9 is a cylindrical electrode placed approximately in the center of tank 4;
10 is a terminal provided on the electrode 8, and 10 is a contact that supports the electrode 8 via the terminal 9 and supplies electricity to the electrode 8.

11 is a cylindrical electrode arranged concentrically with the electrode 8;
is supported by an insulating stand 12'.

13 is a shield for mitigating the electric field, and 14 is a lid that closes the opening of the tank 4.

The electrode 11 is connected to the voltage dividing capacitor 3 and the transformer main body 1 shown in FIGS. 1 to 3 outside the tank 4 via a sealed terminal (not shown) provided on the lid 14.

Figure 5 shows the conventional voltage dividing capacitor 3 shown in Figures 1 to 3.
It shows.

In the figure, 15 is a tank, 16 is a flange attached to the end of the tank 15, and a hole 17 is provided.

A flange 18 is fixed to the flange 16 with bolts (not shown), and is provided with a hole 19.

2゛0 is an insulating support stand゛, which is attached to flange 1 by bolt 21.
8 is integrally fixed.

22 is a pair of disc-shaped electrodes arranged opposite to each other;
It is fixed to the insulating support base 20 with bolts 23.

24 is a lid attached to the flange 18 and closes the hole 19; 25.26 is a shield with a sealed terminal 27 disposed through the lid 24; 28 is a connection between the inner end of the sealed terminal 25.26 and the electrode 22. lead, 29 is shield, 3
0 is the SF6 gas in the container 15; i: A seal to prevent leakage.

The outer end of one sealed terminal 25 is connected to the main capacitor 2 and the transformer main body 1 in FIG. 3, and the outer end of the other sealed terminal 26 is grounded.

As mentioned above, all conventional capacitors have a structure in which the electrodes 8, 11, or 22 are simply arranged opposite each other, so if you want to increase the capacitance of the capacitor, the main capacitor shown in Fig. 4 In the voltage dividing capacitor shown in FIG. 5, it was necessary to decrease l and increase the radius r of the electrode 22.

Therefore, there was a drawback that the capacitor device became large.

This invention was made in view of these points, and the object thereof is to provide a capacitor device that does not have the above-mentioned drawbacks by alternately stacking a plurality of electrodes.

Hereinafter, a condenser device according to an embodiment of this invention shown in FIGS. 6 to 9 will be described.

In Figures 6-9, 16-21, 24.27-3
0 is the same as the conventional voltage dividing capacitor shown in FIG. 2, so its explanation will be omitted.

31 is a tank containing the SF6 gas 5, 32 is a connecting pipe connected to the tank 31, and 33.34 is a disc-shaped first and second electrode, with the center thereof as shown in FIG. There are 6 holes 35 and 36 of different sizes on the circumference of the center circle.
Three pieces are provided alternately at 0° intervals.

The first and second electrodes 33, 34 are alternately stacked with the small holes 35 and large holes 36 of different sizes facing each other with a 60° shift.

The corners 37 of the outer peripheries of the electrodes 33 and 34 and the corners 38 of the large-diameter holes 36 are rounded in an arc shape.

39 is arranged to penetrate through the large hole 36 of the first electrode 33 with an interval in the radial direction, and a second electrode 39 adjacent to the first electrode 33
A cylindrical conductive first electrode 34 that maintains the distance between the electrodes 34 of
The spacer 40 is a cylindrical spacer that is arranged to penetrate the large hole 36 of the second electrode 34 with an interval in the radial direction, and maintains the interval between the first electrodes 33 adjacent to the second electrode 34. A second conductive spacer 41 maintains the distance between the shield 29 and the first electrode 33, a cylindrical conductive spacer 42 is arranged to penetrate the first electrode 33, and a second conductive spacer 41 maintains the distance between the shield 29 and the first electrode 33. This is a cylindrical conductive spacer that maintains a distance from the electrode 34.

43 is a draw rod, which is disposed through the shield 29, the spacer 40, 41 and the first electrode 33, and has one end screwed into the insulating support 20.

44 is a cap screwed onto the other end of the threaded rod 43.

A first tightening device is formed by the threaded rod 43 and the cap 44, and each first electrode 33 is integrally tightened and fixed to the insulating support base 20 via the spacer 40 by the first tightening device. , are electrically connected to each other by a spacer 40.

45 is a draw rod, which is disposed through the shield 29, the spacer 39, 42 and the second electrode 34, and has one end screwed into the insulating support 20.

46 is a cap screwed onto the other end of the threaded rod 45.

A second tightening device is formed by the screw rod 45 and the cap 46, and each second electrode 34 is integrally tightened and fixed to the insulating support base 20 via a spacer 39 by the second tightening device. and are electrically connected to each other by a spacer 39.

Reference numeral 47 denotes a connecting conductor, through which the voltage dividing capacitor 3 is connected to the main capacitor 2 and the transformer main body 1, as shown in FIG.

In this way, since the first and second electrodes 33 and 34 are stacked in multiple stages so as to completely face each other, the capacitor device can have a large capacity even though it is very small, and the capacitance can be further increased. In that case, it is sufficient to increase the number of laminated layers, and there is no need to increase the diameters of the first and second electrodes 33, 34.

Further, the first and second electrodes 33 and 34 are of the same shape and size, and can be simply rotated by 60 degrees and arranged, making assembly work easy.

Further, small holes 36 of different sizes are formed in the first and second electrodes 33.34, which are disc-shaped.
4 are stacked alternately at regular intervals via first and second spacers 39 and 40, and the large hole 35 and the small hole 3
The structure is simple and fastened to the insulating support base 20 by the screw rods 43 and 45 that pass through the insulating support base 20.
Assembly work is easy.

Furthermore, the first and second spacers 39 and 40 act as holding members that keep the distance between the first electrode 33 and the second electrode 34 constant as described above;
Electrical connection between the first electrode 33 and the second electrode 3
It also serves as the electrical connection for four connections, and requires fewer parts.

Although the above embodiment of this invention has been described with respect to a capacitor device for voltage division, this invention is not limited to this, and the same effect can be achieved even when applied to other general capacitor devices.

As explained above, according to the capacitor device of this invention, the first and second electrodes of the same shape and size are stacked alternately facing each other, and the holes provided in the first electrode are spaced apart in the radial direction. The second electrode is fastened to the insulating support via a conductive first spacer that penetrates through the spacer and maintains the distance between the second electrodes, and the second electrode is fastened to the insulating support base. The first electrode is configured to be fastened and fixed to the insulating support via a conductive second spacer that penetrates the hole at a distance in the radial direction and maintains the distance between the first electrodes. As a result, it is compact, has a simple structure, and is easy to assemble.

[Brief explanation of drawings]

Figures 1 to 3 show a condenser type potential transformer,
FIG. 1 is a plan view thereof, FIG. 2 is a front view thereof, and FIG. 3 is a circuit diagram thereof. Fig. 4 is a longitudinal cross-sectional view showing the main capacitor used in Figs. 1 to 3, and Fig. 5 is a longitudinal cross-sectional view showing the conventional voltage dividing capacitor used in Figs. 6 and 7 show a capacitor device according to an embodiment of this invention, FIG. 6 is a vertical sectional view thereof, and FIG. 7 is a Vl-V shown in FIG. 6.
FIG. 2 is a cross-sectional view taken along line II. FIG. 8 is a plan view showing an electrode used in the capacitor device shown in FIGS. 6 and 7, and FIG. 9 is a sectional view taken along the line ■--■ in FIG. 8. In the figure, 16.18 is a flange, 20 is an insulating support, 31 is a tank, 33.34 is a first and second electrode, 35 is a small hole, 36 is a large hole, 39 is a first conductive spacer, 40 is a second conductive spacer, 41.42 is a conductive spacer,
Reference numeral 43.45 indicates a screw rod constituting the tightening device, and reference numeral 44.46 indicates a cap constituting the tightening device. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (2)

[Scope of utility model registration request] (1) First and second plate-shaped electrodes of the same shape and size stacked alternately and facing each other at intervals, and a hole provided in the second electrode with an interval in the radial direction. a conductive second spacer that is arranged to penetrate through the second electrode and maintain a distance between the first electrodes adjacent to the second electrode; The first fixed to the insulating support
and a tightening device disposed through a hole provided in the first electrode at a distance in the radial direction to maintain a distance between the second electrodes adjacent to the first electrode. A capacitor device comprising: a conductive first spacer; and a tightening device for fixing the second electrode to an insulating support via the first spacer. (2) The container device according to claim 1, wherein the tightening device is constituted by a tightening rod and a cap screwed onto the tightening rod.