JPS6111949Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas-insulated pipeline busbar, and more particularly to a gas-insulated pipeline busbar with an improved conductor support device.

FIG. 1 shows a conventional conductor support device for a gas-insulated pipeline busbar. A conductor 5 supported by an insulating spacer 4 is inserted into a conduit 2 filled with an insulating gas 1 . The insulating spacer 4 and the conductor 5 and the insulating spacer 4 and the inner surface of the conduit 2 are fixed in the following manner. That is, a metal fitting 4b having a screw hole 4c is fixed to the upper part of the insulating spacer 4, and this metal fitting 4b and the conductor 5 are connected to the screw hole 4.
Screw bolt 6 into c to secure it. On the other hand, a metal fitting 4a is also fixed to the lower part of the insulating spacer 4, and by fixing this metal fitting 4a to the mounting frame 3 having a screw hole 3a fixed to the inner surface of the conduit 2 with a bolt 40, the conductor 5 can be connected to the conduit. It is insulated and supported within 2.

However, according to the above configuration, if an error occurs in the position of the screw hole 3a of the pedestal 3 and the bolt hole position of the metal fitting 4b, the mounting position of the insulating spacer 4 will shift, and furthermore, an error will occur in the mounting position of the conductor 5. It turns out. In particular, if an error occurs in the running direction and position of a long conductor, it becomes impossible to assemble the conduit busbar. Further, there is a risk that foreign matter such as metal powder generated during bolt tightening work during assembly may adhere to the inner surface of the pipe line 2, disturbing the electric field and causing a drop in withstand voltage.

This invention was made in view of the above drawbacks,
A structure is provided so that the insulating spacer supporting the conductor can be attached to the pedestal connected to the conduit according to its position, and the running direction and position of the conductor can be adjusted. Provided is a gas-insulated pipe busbar that can be attached to an opening protrusion provided midway, trap foreign objects such as metal powder generated during assembly of the pipe busbar into the opening protrusion, and prevent a drop in withstand voltage due to these foreign objects. The purpose is to

Hereinafter, one embodiment of the conductor support device of the present invention will be described with reference to the drawings. In FIG. 2, in which the same parts as in FIG.
2 will be provided. Attach one end of the metal pedestal 13 having a letter-shaped overall shape to the opening end 2a of the opening protrusion 12 with the bolt 1.
Join by tightening with step 4. An opening 15 is provided on the protruding surface of the pedestal 13 facing the conductor 5 . The metal fitting 4a portion of the insulating spacer 4 that supports the conductor 5 is placed on the surface of this opening 15. A mounting position adjustment plate 19 is applied to the opening surface on the other side of the opening 15, and the bolt 17 is inserted from the position adjustment plate 19 side so as to clamp the opening 15 through the through hole 18 provided in the adjustment plate 19. One side of the insulating spacer 4 is fixed by screwing it into the bolt hole 16 of the metal fitting 4a of the insulating spacer 4. Note that the position adjustment plate 19 is provided with a hole 22 passing therethrough. A metal fitting 4b at the other end of the insulating spacer 4 is fastened to the conductor 5 with a bolt 6. On the other hand, the opening of the opening protrusion 12 is closed with a cover 21 via an O-ring 20, and the inside of the conduit 2 is cut off from outside air. Incidentally, a gas passage hole 13a passing through the pedestal 13 is provided on the surface of the pedestal 13 facing the opening protrusion 12. Therefore, the inside of the conduit 2 and the space surrounded by the pedestal 13, the cover 21, and the metal fittings 4a communicate with each other via the gas passage hole 13a and the through hole 22.

According to the present invention having the above configuration, the metal fitting 4a of the insulating spacer 4 is attached to the adjusting plate 1 by the bolt 17 inserted through the opening 15 provided in the mounting metal frame 13.
9, the opening 15
The position can be adjusted within the range. Therefore, conductor 5
can always be assembled in the normal axial direction.
Also, foreign matter such as metal powder generated inside the pipe 2
Since the gas insulated pipe bus bar can be captured by the protruding portion 12 of the gas insulated pipe bus bar, it is possible to prevent the deterioration of the withstand voltage performance.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a conventional conductor support device for a gas-insulated pipeline busbar, and FIG. 2 is a longitudinal sectional view of a conductor support device according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Insulating gas, 2... Pipe line, 4... Insulating spacer, 12... Opening protrusion, 13... Frame, 1
5...Opening, 19...Position adjustment plate.

Claims (1)

[Claims for Utility Model Registration] (1) In a gas insulated bus bar comprising a conduit filled with an insulating gas and a conductor supported inside the conduit via an insulating spacer, the conduit has an opening protrusion. , a pedestal is attached to this opening protrusion, an opening is provided in this pedestal, the insulating spacer is placed on one side of this opening surface, and the insulating spacer is placed on the other side of this opening surface within the range of the opening surface. A gas insulated conduit busbar characterized in that a position adjustment plate is removably attached to the insulating spacer so that the attachment position thereof can be adjusted. (2) Utility model registration claim Paragraph 1, in which the frame has a shape that protrudes inward from the opening end of the opening protrusion of the conduit, and an insulating spacer is placed on this protruding flat part. Gas insulated conduit busbar as described. (3) The gas insulated conduit busbar according to claim 2 of the utility model registration claim, in which a gas vent is provided in the pedestal portion facing the opening protrusion.