JPS602013A - Gas insulated enclosed bus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas-insulated hermetically sealed busbar, and more particularly to the structure of an insulating spacer that is used between cylindrical metal containers of a gas-insulated hermetically sealed busbar to support a busbar conductor.

Describing the structure of a conventional gas-insulated sealed busbar, as shown in Figs. 1 to 3, a cylindrical metal container is connected with an insulating spacer, and the insulating spacer is connected to the bus conductor. a,,7b
,,? electrodes 9a, 4Ib, lIc supported at parallel intervals within the container l and electrically conducting the bus conductor;
have.

The gas-insulated hermetic bus constructed as described above has a three-phase motherboard arrangement with three bus conductors, ? 2 out of a, 3b, 3c
From the book bus conductors 3a and 3b arranged horizontally, 2
When changing the main bus conductors 3a, 3c to those arranged vertically, a complex shape like the bus conductor 3a shown in FIG. 1 was required. Therefore, since it is necessary to increase the mechanical strength against the electromagnetic force generated when a large current flows through the bus conductor, there is a drawback that a conductor that is thicker than the current carrying capacity is required.

This invention was made in view of the drawbacks of the slanted structure of the conventional ones.The structure is simple, thin conductors can be used to obtain the same strength, and the arrangement of various three-phase busbars can be changed by combining them. The purpose is to provide a gas-insulated hermetic busbar, by providing an insulating spacer with a large number of electrodes that can be electrically connected to the three-phase busbar, and providing a conductor that bridges two of the electrodes. , which achieves the above objectives.

The present invention will be explained below with reference to the illustrated embodiments. As shown in FIGS. There are a number of electrodes.

, 2t1. b, 211c, J&d, and supports the three bus conductors 23a1.2.7b, 23c, and electrically conducts them. The three electrodes are electrically connected by a two-electrode bridging conductor 23a that bridges one of the electrodes.

In FIG. S, the electrode 211a and 21/! d and bridging conductor 2
! Conductive at a.

Therefore, according to the present invention, the position of the bus conductor 23 &
In the figure, the rightmost electrode 2qd is bridged with another electrode 2'la provided on the top of the Hirokoku insulating spacer 2.2 by the - electrode bridging conductor 2ja, and the bus conductor 2 The position of .7a can be moved from the right end to the top as shown in FIG. Moreover, this bridging conductor uj
Since both ends of a are supported by Hirokoku insulating spacers 22 over a short distance, the structure has a strong mechanical strength.

Furthermore, in the above embodiment, the position of the bus conductor 23a is moved, but by changing the bridging position, the electrodes 1Ia and 2' can be connected to each other, as shown in FIGS.
lc with a two-pole bridging conductor 3SC, as shown in Figure S.
, the bus conductor at the bottom,? ,? C is the bus conductor JJa,
The arrangement can be changed to the one shown in Figure 2 above 3Jb, and the electrode 2'l as shown in Figure 1O~/, 2.
By bridging a and 2<<b with the single-pole bridging conductor 1Isb, the bus conductors 11Ja and 1I3b change from a horizontal arrangement to an arrangement in which bus conductors +, 7b, and Hiro 3c are on a vertical plane. can do.

It will be easily understood that similar effects can be obtained in any of the embodiments.

As described above, according to the present invention, the remaining seven electrodes provided on the insulating spacer are configured to bridge the other electrodes, so that the busbar The conductor can be made simple and inexpensive, and it can also have strong mechanical strength, resulting in significant improvements in reliability.

[Brief explanation of drawings]

Figure 1 is a sectional view of a gas-insulated hermetic bus bar showing a change in the arrangement of a conventional three-phase busbar, Figure 2 is a sectional view taken along line ■-■ in Figure 1, and Figure 3 is a line m-m in Figure 1. 9 is a sectional view similar to FIG. 1 showing an embodiment of the gas-insulated hermetic busbar according to the present invention, and FIG.
6 is a sectional view taken along line VI-VI in FIG. 9, FIG. 7 is a sectional view similar to FIG. 1 showing another embodiment of the gas-insulated hermetic busbar according to the present invention, and FIG. is a cross-sectional view taken along the line ■-■ in Figure 7;
FIG. 10 is a cross-sectional view showing still another embodiment.
A sectional view similar to that shown in Figure 1/Figure 1 is line XI-XI of Figure io.
Figure 1 is a cross-sectional view taken along line 1--store in Figure io. l...container, c...insulating spacer, 3a...bus conductor a
Phase, 3b...Bus bar conductor phase, 3c...Bus bar conductor C phase, here...Gog pole insulating spacer, 2Ja. 33a, 1I3a" bus conductor C phase, 23b, 33b. bus conductor phase 23c, 33c, 33d
・Bus bar conductor C phase, 211a, 2hirosu, 2'lc, 2'l
rl --electrode, ga, 3! ;c,'l! ;b...Bridging conductor between two poles. In each figure, the same reference numerals indicate the same or corresponding parts. Agent Masu Oiwa ■-■ 4th figure V → ■→ 4c Most 7 figures ■← ■→ jC Hikari 10th figure

Claims (2)

[Claims] (1) Gas insulation in which a bus conductor is supported within a cylindrical metal container by an insulating spacer, and insulation gas is filled in the cylindrical metal container to maintain insulation between the cylindrical metal container and the bus conductor. A gas-insulated hermetically sealed bus bar, characterized in that the insulating spacer is provided with nine electrodes that can be electrically connected to the bus conductor. (2) The gas according to claim 1, characterized in that the arrangement of the three phase bodies is changed by providing a two-pole bridging conductor that bridges between two of the 11 electrodes. Insulated sealed busbar.