JP2013215784A - Device and method for joining aluminum joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joining device and a joining method capable of safely and easily joining an aluminum joint in wire jointing at a jumper part of an electric power cable and an opening/closing place.SOLUTION: A joining device includes: an igniter 10 having a semicylindrical container with a cylindrical shape a side surface of which is cut away and containing gun powder therein, and having a blasting fuse 15; an igniter fixing tool 20 having a fixing band 30 for holding the igniter 10 and fixing the igniter to an aluminum joint 40; and a blasting machine 90 connected to the blasting fuse 15 for igniting the igniter 10.

Description

  The present invention relates to a connection portion of a power transmission line by an aluminum member, and more particularly, to a jumper portion of a power transmission line and a joining device for an aluminum joint portion in connection of electric wires at an open / close location and a joining method thereof.

  The jumper part of the power transmission line and the aluminum joint part in the wire connection at the open / close position are insulative due to oxidation due to salt damage or rainwater intrusion, and the power transmission efficiency may be significantly reduced. In order to remove this insulation state and restore the power transmission efficiency, a safe and simple method has been demanded particularly in the work on the steel tower.

  In Patent Document 1, the lap portions 2 of a plurality of thin metal sheets 1 are sealed by resistance seam welding or indirect seam welding, and the back surface of the outer peripheral end portion 3 is separated from the surface of the metal substrate 5 by a predetermined distance dwp. There is a description that the outer peripheral end 3 is explosively bonded to the surface of the metal base 5 and hermetically sealed by explosion of the explosive B.

  Patent Document 2 discloses that a Ni alloy is dissolved at a low welding temperature in a Cu base material 11 coated with a Ni plating 12 having a P element content of 5 wt% or more and 11 wt% or less and composed based on the Cu element. There is a statement to the effect.

JP-A-7-155961 JP 2009-129803 A

  The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a joining device that can safely and easily join a jumper part of a transmission line and an aluminum joint part in an electric wire connection at an open / close position. The joining method is provided.

  A joining device for aluminum joints according to the present invention is a joining device for aluminum joints for connecting a jumper part of a transmission line and an electric wire at an open / close position, in which a gunpowder is enclosed in a kamaboko-shaped container with a cylindrical side cut off. In addition, an igniter having a lead wire, an igniter fixing jig having a fixing band for holding the igniter and fixing the igniter, and a blaster connected to the lead wire and igniting the igniter.

  The joining method of the aluminum joining part of the present invention is a joining method of the aluminum joining part in the connection of the jumper part of the power transmission line and the opening and closing part, the step of removing the oxide film of the aluminum joining part, and the cylindrical side surface The step of putting an igniter with a conducting wire into the igniter fixing jig, where the explosives are contained in a cut-out kamaboko-shaped container, and the igniter fixing jig containing the igniter, the oxide film on the aluminum joint is removed by the fixing band. A step of fixing the igniter to the blaster, and a step of igniting the igniter by the blaster and melting and joining the aluminum joint by explosion.

  ADVANTAGE OF THE INVENTION According to this invention, the joining apparatus which can join the aluminum junction part in the jumper part of a power transmission line and the electric wire connection of an opening-and-closing location safely and easily, and its joining construction method can be provided.

The attachment block diagram which shows the attachment structure of the joining apparatus by this invention. The process figure of the joining construction method by this invention. The process figure of the joining construction method by this invention. The process figure of the joining construction method by this invention. The joint formation figure of the fusion | melting junction part by this invention.

  Embodiments of the present invention will be described with reference to the drawings of a configuration of a joining device attached to an aluminum joint of a jumper part of a power transmission line. FIG. 1 is an attachment configuration diagram in which a joining device according to the present invention is attached to an aluminum joint part of a jumper part of a power transmission line. In FIG. 1, the joining device of the present invention includes an igniter 10 in which a gunpowder is contained in a kamaboko-shaped container with a cylindrical side face cut off and having a lead 15, and holds the igniter 10 and will be described in detail below. An igniter fixing jig 20 having a fixing band 30 for fixing to the aluminum joint 40 and a blaster 90 connected to the igniting wire 15 and igniting the igniter 10 are configured.

  The power transmission line 70 is fitted to one end of an aluminum retaining clamp 50 that holds the power transmission line 70 to a steel tower (not shown) and is fastened to the steel tower. The other end of the retaining clamp 50 has a connecting portion 55 having a through hole for a connecting bolt in order to connect to the jumper wire 80. A jumper wire 80 is fitted to one end of the aluminum jumper socket 60. Since the other end is connected to the connection portion 55 of the clamp 50, it has a U-shaped connection portion 65 having a through hole for a similar connection bolt.

  A connecting bolt penetrates the through hole between the U-shaped connecting portion 65 of the jumper socket 60 and the connecting portion 55 of the tension clamp 50, and the connecting portions are joined by nuts to form the aluminum joint portion 40. Yes. The other end of the jumper wire 80 is fitted into a similar jumper socket 60, and the U-shaped connecting portion 65 of the jumper socket 60 is similarly connected to a retention clamp 50 that holds the power transmission line 70 symmetrically to the steel tower. Connected to the section 55.

  The aluminum joint 40 is in an insulated state due to salt damage or oxidation due to intrusion of rainwater, and the power transmission efficiency is significantly reduced. For this reason, the igniter 10 is attached to the aluminum joint 40, the conductor 15 is connected to the blasting device 90, and the igniter 10 is ignited and explodes, so that the aluminum joint 40 is melted and the power transmission efficiency is restored. .

  Next, the joining method according to the present invention will be described. FIGS. 2-4 is a joining process figure which shows the joining construction method of this invention. In FIG. 2, in order to attach the igniter 10 to the aluminum joint 40 on which the oxide film that inhibits electric conduction is formed, the oxide film at the attachment portion indicated by the broken-line rectangle is removed with a metal brush or the like (step 1).

  In FIG. 3, the igniters 10 are respectively attached to the attachment portions from which the oxide film has been removed. In this attachment, the attaching flat portion of the igniter 10 is provided with a double-sided adhesive tape, temporarily fixed at the position shown in FIG. 3, then covered with the igniter fixing jig 20 shown in FIG. Alternatively, after inserting the igniter 10 into the igniter fixing jig 20 without using a double-sided adhesive tape, the igniter 10 may be positioned at each mounting position and fixed by the fixing band 30 as shown in FIG. 2). The igniter fixing jig 20 is preferably made of ceramic in order to withstand the impact of explosion and increase the thermal efficiency of melting, and the fixing band 30 is preferably a reinforced fiber or metal that can withstand the impact of explosion. .

  4b, the igniter 10 of the igniter 10 is connected to the blaster 90 in FIG. 1 (step 3). When the switch is turned on, the igniter 10 is ignited and explodes, and the igniter 10 of the aluminum joint 40 is attached. The parts are melt bonded. At that time, in FIG. 4c, the igniter 10 explodes and disappears, and the molten joint portion 17 of the aluminum joint portion 40 is formed (step 4).

  In FIG. 4d, the fixing band 30 is released, the igniter fixing jig 20 is removed, and the operation is completed (step 5). FIG. 5 is a joint formation diagram of a melt joint according to the present invention. In FIG. 5, two formed melt joints 17 are shown. Even if the igniter 10 is configured so that the melt joint region of the melt joint 17 covers the entire surface of the aluminum joint 40. good. Further, the igniter 10 may be configured so as to cover the aluminum joint 40 on the back surface at the same time. Thereby, necessary and sufficient power transmission efficiency can be obtained.

  As described above, according to the present invention, it is possible to safely and easily join the jumper portion of the transmission line and the aluminum joint portion in the electric wire connection at the open / closed position by a small igniter suitable for work on the tower. It is possible to provide a joining apparatus and a joining method that can be used.

DESCRIPTION OF SYMBOLS 10 Igniter 15 Conductor 17 Melt joint 20 Igniter fixing jig 30 Fixing band 40 Aluminum joint 50 Drain clamp 55 Connection part provided with connection bolt through hole 60 Jumper socket 65 Co-type connection provided with connection bolt through hole Part 70 Transmission line 80 Jumper line 90 Blaster

Claims (2)

It is a joining device for an aluminum joint in a wire connection of a jumper part of a power transmission line and an open / close position,
An igniter having a lead wire, in which a gunpowder is enclosed in a cylinder-shaped container with a cylindrical side cut off;
An igniter fixing jig for holding the igniter and having a fixing band for fixing the igniter to the aluminum joint;
An apparatus for joining aluminum joints, comprising: a blaster connected to the squib wire and igniting the igniter. It is a method of joining aluminum joints in the connection of electric wires at the jumper part of the transmission line and the opening and closing part,
Removing the oxide film on the aluminum joint;
A step of placing an igniter having a lead wire, in which an explosive is contained in a cylinder-shaped container with a cylindrical side cut off, into an igniter fixing jig;
Fixing the igniter fixing jig containing the igniter to a portion of the aluminum joint portion from which the oxide film has been removed by a fixing band;
Connecting the igniter lead to a blaster;
And a step of igniting the igniter by the blaster and melt-bonding the aluminum joint by explosion.

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