JPH0125422Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to a conduit device for connecting conductors, and more particularly to a conduit device for connecting conductors in which the outer periphery of the connecting portion of the conductor is covered with an insulating material.

B. Summary of the invention The present invention is a conduit device for connecting conductors in which conductors are connected using a cylindrical barrier, in which semi-cylindrical barriers are arranged concentrically in the circumferential direction with a gap between them to form a cylindrical barrier, and the gap is Shift the position by 90° between each phase, and also with respect to the board surface.
By shifting the positions by 90 degrees, it is easy to connect the conductors, and the arc and gas generated within the cylindrical barrier are not emitted towards the conductor connections of adjacent phases or the panel surface. This is how it was done.

C. PRIOR TECHNOLOGY In general, for example, in a switchgear for electrical equipment, the connecting portion of a conductor is covered with an insulating cylindrical barrier, and this cylindrical barrier is used to provide interphase insulation between each conductor at regular intervals and to provide ground insulation for each conductor. These are placed at a certain distance from each other.
That is, each conductor is connected in its axial direction, and this connection is axially covered with a cylindrical barrier, which is spaced at regular intervals for phase-to-phase insulation between each conductor and at regular intervals for ground-to-ground insulation of each conductor. They are arranged at a constant distance, for example, in a panel that serves as a ground plane, and are suspended from a support rod or the like that is attached to the panel through an insulator such as an insulator.

D Problems to be solved by the invention In conventional conductor connection conduit equipment, when connecting conductors, the cylindrical barrier is pulled toward one of the conductors, and the connection part of the conductor is exposed from the cylindrical barrier. The work was time-consuming because each conductor had to be connected.

Further, in order to release the gas generated by the arc discharge from the cylindrical barrier, the openings at both ends of the cylindrical barrier cannot be used, so the gas cannot be released instantaneously. Therefore, the constant spacing between each cylindrical barrier and the ground insulation distance required for phase-to-phase insulation between each conductor are as follows:
There are problems such as an increase in the overall size of the switchgear that accommodates the conductor connecting device as the operating voltage increases.

The present invention has been made in view of the above-mentioned problems.

E. Means for Solving the Problems The conduit device for connecting conductors according to the present invention is made of an insulating material on the inner peripheral surface of a semi-cylindrical barrier made of an insulating material so as to protrude toward the center of the semi-cylindrical barrier. A conductor support is provided, and a plurality of semi-cylindrical barriers are arranged concentrically so that a gap is created in the circumferential direction to form a cylindrical barrier, the conductor is supported on the inner end surface of the conductor support, and the conductor is supported by the cylindrical barrier. The connecting portion of the cylindrical barrier is covered in the axial direction, and the gap portions of the cylindrical barriers of the adjacent phases are shifted by about 90 degrees from each other, and the orthogonal angles with respect to the board surface are shifted by about 90 degrees. Features.

F Effect The conductor connection work is performed after dividing the cylindrical barrier, and after the connection work is completed, the cylindrical barrier is assembled by arranging multiple semi-cylindrical barriers concentrically and supporting the conductor at the center of the semi-cylindrical barrier. . Further, when an arc and gas are generated within the cylindrical barrier, the arc and gas emitted from the gap are not directly blown toward the adjacent conductor connections and the panel surface.

G. Embodiment The present invention will be explained below based on the embodiment shown in FIGS. 1 and 2.

Reference numeral 1 denotes a cylindrical barrier, and the cylindrical barrier 1 is formed by concentrically arranging a plurality of semi-cylindrical barriers 3, and a gap 2 is formed in the circumferential direction of each semi-cylindrical barrier 3. Each semi-cylindrical barrier 3 is formed of an insulating material made of synthetic resin or the like, and a conductor support 4 having an approximately triangular cross section is provided on the inner peripheral surface of the semi-cylindrical barrier 3 at the center of the semi-cylindrical barrier 3. It is set towards. A conductor 5,
6, and is formed so as to maintain a constant distance between the conductors 5, 6 and the inner peripheral surface of the semi-cylindrical barrier 3. In addition, in the example,
Although the cylindrical barrier formed by a semi-cylindrical barrier has been described, the present invention is not limited to this, and for example, a rectangular cylinder barrier formed by dividing a rectangular cylinder in the axial direction may be formed.

The conductors 5 and 6 have a substantially square cross section, and the conductor 5
A spherical part 8 is provided at the distal end (rightward in FIG. 2) of the conductor 6, and a spherical recess 9 that engages with the spherical part 8 is provided at the distal end of the conductor 6 corresponding to the spherical part 8. An insertion section 11 is provided on both outer sides thereof with a circular protrusion 10 that serves as a guide for the spherical section 8 and holds the conductor 5 after conductor connection.

The conductors 5, 6 are supported within the cylindrical barrier 1,
When abutted against each other, the spherical part 8 is inserted into the insertion part 11 and connected approximately in the center of the cylindrical barrier 1.

Next, the cavity 2 formed in the cylindrical barrier 1 is for discharging the arc and gas generated within the cylindrical barrier 1. As shown in the figure, this gap 2 is provided at a position offset by 90 degrees in the circumferential direction from the gap 2 of the cylindrical barrier 1 of each adjacent phase, and the orthogonal angle with the wall surface 7 is also approximately 90 degrees. It is set out of alignment. Therefore, the arc and gas generated within the cylindrical barrier 1 are not directly blown onto the connecting portions of the conductors 5 and 6 of adjacent phases, nor are they blown directly against the wall surface 7. In addition, the cavity 2
Despite this, the insulation creepage distance between the phases can be increased, and the conductors 5 and 6 of each phase can be disposed close to each other, and can also be disposed close to the wall surface 7. In addition, the semi-cylindrical barrier 3 is fixed at a suitable point in the longitudinal direction with a circular fixture, and is suspended via this fixture while maintaining a constant ground insulation distance between it and the board surfaces 7, 7. .

H. Effects of the invention In the conduit device for connecting conductors of the present invention, the cylindrical barrier is formed by arranging a plurality of semi-cylindrical barriers concentrically in the circumferential direction with gaps between them, so that the conductor connection work is easy. Since this can be done after dividing the cylindrical barrier in the circumferential direction, work efficiency is improved. Further, the arc and gas generated within the cylindrical barrier are quickly discharged to the outside from the gap formed in the cylindrical barrier. Moreover, since the voids are provided so that the orthogonal angle between the voids of the cylindrical barriers of each adjacent phase and the board surface is shifted by approximately 90 degrees,
The discharge of the arc and gas does not have any effect on the connection portions of adjacent conductors. Moreover, since it is possible to secure a longer insulation creepage distance between each phase and the panel surface, the arrangement spacing of each phase can be made closer, which has the effect of reducing the size of the switchgear and reducing manufacturing costs. It is.

[Brief explanation of drawings]

1 and 2 show an embodiment of a conduit device for connecting conductors according to the present invention, FIG. 1 is a front sectional view, and FIG.
The figure is a side sectional view of the main part. 1...Cylindrical barrier, 2...Gap, 3...Semi-cylindrical barrier, 4...Conductor support, 5, 6...Conductor,
7... Wall surface, 8... Spherical part, 9... Spherical recess, 1
0... Protrusion part, 11... Insertion part.

Claims (1)

[Scope of utility model registration request] A conductor support made of an insulating material is provided on the inner peripheral surface of the semi-cylindrical barrier made of an insulating material so as to protrude toward the center of the semi-cylindrical barrier, and a gap is provided between each semi-cylindrical barrier in the circumferential direction. The cylindrical barrier is provided and arranged concentrically to form a cylindrical barrier, and the conductor is supported on the inner end surface of the conductor support, and the cylindrical barrier covers the connecting portion of the conductor in the axial direction, and the cylindrical barrier of each adjacent phase is 1. A conduit device for connecting conductors, characterized in that the void portions are arranged at approximately 90 degrees apart from each other, and the orthogonal angles to the panel surface are shifted at approximately 90 degrees.