JPS6182685A - Conductor connector for gas insulated 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 [Field of Industrial Application] The present invention relates to a stable support structure for conductors within a gas-insulated bus bar.

[Conventional technology]

At one stage, tulip contacts are used at the connection part of the conductor for the purpose of electrical contact, but they also support the conductor.
A conductor support rod is provided on the conductor on the insulating spacer side to facilitate insertion of the conductor during assembly. That is, Fig. 2 shows the structure of the conductor connection part in a conventional gas-insulated bus bar. In Fig. 2, the conductor (2) in the container (1) is connected via the tulip contact (6). Insulating spacer (3)
It is electrically connected to the conductor (8) embedded in the conductor (8) by fitting the tip (5) of the conductor (2) with the conductor support rod (4) located at the tip of the conductor (8). It is mechanically supported. Note that (7) is a shield. Figure 3 is the second
In the cross-sectional view taken along the line ■-■ in the figure, the conductor support rod (41 has a circular cross-sectional shape, and the conductor tip (5) has the above-mentioned support rod)
A circular hole (5a) slightly larger than the diameter of the hole (5a) is formed.

[Problem that the invention seeks to solve]

However, if such a conductor support structure is applied to a three-phase bulk gas-insulated bus, if a ground fault such as a three-phase short circuit occurs, the conductor (2) and the conductor tip (5) will be affected by the short-circuit electromagnetic force. There is a risk of arcing occurring between the conductor tip (5) and the tulip contact (6).

This invention was made in view of the above drawbacks.
It is an object of the present invention to provide a support structure for a conductor that prevents rotation of the conductor and ensures good current carrying performance.

[Means for solving problems]

The support structure according to the present invention is a rectangular engagement support structure in which the conductor of a gas insulated bus bar and a conductor support rod supporting the conductor are formed into a rectangular engagement support structure.

[Effect]

In this invention, even if rotational force due to short-circuit electromagnetic force acts on the conductor, the conductor is prevented from rotating by the conductor support rod, so good current conduction can be maintained between the conductor tip and the tulip contact. .

〔Example〕

FIG. 1 is a cross-sectional structural diagram of a conductor support portion according to an embodiment of the present invention, in which the conductor support rod (4) has a rectangular cross-sectional shape, while the tip portion (5) of the conductor (2) has the above-mentioned shape. Conductor support rod (
A somewhat larger rectangular hole (5a) is formed with a similar shape to the cross section of 4). And the square hole (
A rectangular conductor support rod (4) is inserted into and engaged with the conductor support rod (4) to support the conductor.

The rest of the structure is the same as the conventional one, so the explanation will be omitted.

As shown in Fig. 2, the conductor (2) in the gas insulated bus bar is held at both ends by engagement with the conductor support rod (4) (one side of the conductor (2) in the embodiment shown in Fig. 1 above). A square support structure may be used, and the other side may be a circular support structure of the conventional example shown in FIG.

〔Effect of the invention〕

As described above, according to the present invention, rotation of the tip of the conductor can be prevented by the rectangular conductor support rod, and good current carrying performance can be ensured with a simple configuration.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a sectional structural view of a conductor connection part in a conventional gas insulated bus bar,
FIG. 3 (This is a sectional view taken along line III-I in FIG. 2. In the figure, (1) is a container, (2) is a conductor, (3) is an insulating spacer, (4) is a conductor support rod, ( 5) is the conductor tip, (5)
a) is a hole, (6) is a tulip contact, and (8) is a conductor. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (2)

[Claims] (1) A gas insulated bus bar that is electrically and mechanically supported by fitting a conductor support rod formed at the tip of the conductor embedded in an insulating spacer with a hole drilled in the tip of the conductor. In the conductor connecting device, the cross-sectional shape of the conductor support rod is square, and the hole at the tip of the conductor is a square hole with a cross-sectional shape similar to the cross-section of the conductor support rod, and the conductor support rod is inserted into the hole of the conductor. A conductor connection device for a gas insulated bus bar, characterized in that the conductor is supported by: (2) In a gas insulated bus bar in which the conductor in the gas insulated bus bar is held at both ends by engagement with conductor support rods, the cross section of the conductor support rod and the cross section of the hole at the tip of the conductor are square on one side, 2. A conductor connection device for a gas insulated bus bar according to claim 1, wherein the other side has a circular shape for engagement.