KR20120138034A

KR20120138034A - Jig for cutting conductor of ultra high voltage power cable

Info

Publication number: KR20120138034A
Application number: KR1020110057298A
Authority: KR
Inventors: 김영택; 김한화; 최만옥
Original assignee: 대한전선 주식회사
Priority date: 2011-06-14
Filing date: 2011-06-14
Publication date: 2012-12-24

Abstract

PURPOSE: A jig for cutting a conductor of a super-high power cable is provided to enhance connecting box quality and to smooth connection process. CONSTITUTION: A jig for cutting a conductor of a super-high power cable(20) comprises a semi-cylinder shaped upper jig(21) and a bottom jig(22). Bolt binding holes are formed on the outer surfaces of each one side upper and lower part jigs. The bottom jig is coupled with the upper jig by the bolts. The conductor is coupled with internal hole(24) formed by the coupling of the upper and lower part jigs.

Description

JIG FOR CUTTING CONDUCTOR OF ULTRA HIGH VOLTAGE POWER CABLE}

The present invention relates to a conductor cutting jig of an ultra-high voltage power cable, and more particularly, to a conductor cutting jig of an ultra-high voltage cable capable of vertically cutting the conductor surface of the power cable.

In the intermediate connection method of the ultra-high voltage power cable, various methods are developed and implemented according to the cable type and specification.

In general, the ultra-high voltage cable is connected by intermediate connection at intervals of several hundred m to several km, and the terminal is terminated by terminating at the end. Intermediate junction boxes and termination junction boxes are designed according to the type and specification of the ultra-high voltage cable.

When connecting the intermediate junction box, the connection between the conductors exposed at both ends of the ultra-high voltage cable is connected by using an accessory material called a conductor sleeve, and various insulation stiffeners are connected to alleviate the electric field strength of the connected conductor part. At the time of connection of the junction box, the conductor sleeve is connected to the end of the ultra-high voltage cable in a state where the conductor sleeve is connected to insulate and reinforce various insulation reinforcing materials.

At this time, the ultra-high voltage cable is cut at a predetermined position according to the connection position, the insulator (especially XLPE) is peeled off in the cut state, the conductor is cut to fit the dimensions designed for the connection after the insulator is peeled off. The cutting of the conductor is generally carried out by a chainsaw, the conductor is made of stranded wire, the cutting of the conductor is not made flat, but the saw blade is pushed, the conductor cut surface is obliquely cut, so that the connection operation is inefficient.

An object of the present invention is to provide a conductor cutting jig for an ultra-high voltage cable for cutting the conductor of the ultra-high voltage cable to have a substantially flat surface.

The conductor cutting jig of the ultra-high voltage cable according to the present invention for solving the above problems is a semi-cylindrical upper jig is formed with a bolt fastening hole on one side of the outer surface; And a semi-cylindrical lower jig in which bolt fastening holes are formed at one side of the outer surface to be fastened by the upper jig and the bolt. The conductor is fastened by an inner diameter generated by the fastening of the upper jig and the lower jig. One side of the fastening hole is characterized in that the saw blade insertion groove which can be inserted into the saw blade is formed.

Here, the depth of the saw blade insertion groove is preferably a groove is formed from the outer surface to a predetermined position penetrating the inner diameter of the ball generated by the coupling of the upper jig and the lower jig.

According to the above-described configuration of the present invention, it is possible to provide a conductor cutting jig for an ultra-high voltage cable, in which the cut surface of the ultra-high voltage cable is substantially flat when the conductor is cut.

1 is a perspective view of a conductor cutting jig of an ultra-high voltage power cable according to an embodiment of the present invention.
Figure 2 is a perspective view of the conductor cutting jig of the ultra-high voltage power cable according to another embodiment of the present invention.
3 is a cross-sectional view of the center of FIG. 2.
4 is a view showing a state of use of the conductor cutting jig of FIG.
FIG. 5 shows a state diagram of use of the conductor cutting jig of FIG. 2.

Hereinafter, with reference to the accompanying drawings will be described the structure of the conductor cutting jig of the ultra-high voltage power cable according to the present invention and its effects.

1 is a perspective view of a conductor cutting jig of an ultra-high voltage cable according to an embodiment of the present invention, Figure 4 is a diagram showing the state of use of the conductor cutting jig of FIG.

As shown in FIG. 1, the conductor cutting jig 10 of the ultra-high voltage power cable according to the embodiment of the present invention may be divided into two upper jig 11 and lower jig 12 made of cylindrical metal. It has a shape that is joined by). Bolts 13 may be configured in a pair to fasten the left and right in a balanced manner, one bolt 13 may be fastened in one or two.

The inner diameter sphere 14 formed by the combination of the upper jig 11 and the lower jig 12 is a portion into which the conductor of the power cable is inserted.

Referring to the state of use of the conductor cutting jig 10 having such a structure through FIG. 4, the upper jig 11 and the lower jig 12 are divided into outer diameter portions of the conductor 42 exposed by the insulator 41. To be coupled, but fastened by the bolt 13 in the state that the outer surface of the conductor cutting jig 10 is aligned with the cutting line of the conductor 42. After the fastening is completed, the saw blade 43 of the chainsaw is supported on the surface of the conductor cutting jig 10 and then the conductor 42 is cut.

Figure 2 is a perspective view of the conductor cutting jig of the ultra-high voltage cable according to another embodiment of the present invention, Figure 3 is a cross-sectional view of the center of Figure 2, Figure 5 is a diagram showing the state of use of the conductor cutting jig of FIG.

The conductor cutting jig 20 shown in FIG. 2 is for improving the problem of the conductor cutting jig 10 shown in FIG.

The conductor cutting jig 10 shown in FIG. 1 may use one side as a support surface to cut the conductor to solve some of the problem of cutting the inclined plane of the conventional conductor cutting surface, but the other side of the blade is not supported when cutting the conductor. It is often the case that the blade is biased towards the unsupported side so that the conductor cut plane is not cut perfectly vertically, and the conductor cutting jig 20 shown in FIG. 2 is disclosed to improve this.

As shown in FIG. 2, the conductor cutting jig 20 of the ultra-high voltage cable according to another embodiment of the present invention may be divided into two upper jig 21 and lower jig 22 made of cylindrical metal. It has a shape that is joined by). Bolts 23 may be configured in a pair to fasten the left and right in a balanced manner, one bolt 23 may be fastened in one or two.

The inner diameter hole 24 formed by the combination of the upper jig 21 and the lower jig 22 is a portion into which the conductor of the power cable is inserted.

The conductor cutting jig 20 is further formed with a blade insertion portion 25, the blade insertion portion 25 is formed as a side to which the bolt 23 is fastened as shown in Figure 3 and the depth of the conductor cutting jig ( The opening 20 is opened to a position A which is slightly deeper than the inner diameter 24 formed by 20.

If the depth is in contact with the inner diameter 24 or located inside the inner diameter 24 may cause a finishing problem in which the conductor is not completely cut.

In addition, the blade insertion portion 25 should be formed over the upper jig 21 and the lower jig 22, because if formed only one side is cut without being formed as an opening by the opening depth.

Referring to the state of use of the conductor cutting jig 20 having such a structure through FIG. 5, the upper jig 51 and the lower jig 52 are divided into outer diameter portions of the conductor 52 exposed by the insulator 51. To be coupled to, but fastened by the bolt 23 in the state where the saw blade insertion portion 25 of the conductor cutting jig 20 at the cutting line position of the conductor 52. After the fastening is completed, the saw blade 53 of the chainsaw is inserted into the saw blade insert 25 of the conductor cutting jig 20 to cut the conductor 52.

In the process of cutting, the saw blade 53 is supported between both inner surfaces of the saw blade insert 25 so that the cut surface of the conductor 52 has a vertically cut surface without inclination and is subsequently connected according to the design dimension when the conductor sleeve is connected. This makes it possible to smoothly improve the quality of the junction box and the connection process.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, As will be understood by those skilled in the art. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

10, 20: conductor cutting jig 11, 21: upper jig
12, 22: lower jig 13, 23: bolt
14, 24: internal diameter 25: saw blade insert
41, 51: insulator 42, 52: conductor
43, 53: saw blade

Claims

An upper jig having a semi-cylindrical shape in which bolt fastening holes are formed at one outer side surface;
And a semi-cylindrical lower jig in which a bolt fastening hole is formed at one side of the outer surface to be fastened by the upper jig and the bolt.
The conductor is fastened to the inner diameter caused by the fastening of the upper jig and the lower jig, the saw blade insertion groove which can be inserted into the saw blade is inserted into one side of the bolt fastening hole, conductor cutting jig of the ultra-high voltage cable.

The method of claim 1,
The depth of the saw blade insertion groove is a conductor cutting jig of the ultra-high-voltage power cable from the outer surface to a predetermined position through the inner diameter of the ball generated by the coupling of the upper jig and the lower jig.