KR101128106B1 - A Conductor Sleeve for Connecting Power Cables Having Different Conductors, A Conductor Sleeve for Connecting Aluminum Conductor Power Cable, A Method of Manufacturing the Same, and A Joint Box Having the Same - Google Patents

Abstract

The present invention discloses a conductor sleeve for connecting a power cable having different conductors, a conductor sleeve for connecting a power cable having an aluminum conductor, a method of manufacturing the same, and a junction box having the same.
A conductor sleeve for connecting a power cable having a heterogeneous conductor according to the present invention and an intermediate junction box including the same include: a body having a receiving groove for accommodating a first conductor made of copper on one side and a joining surface on the other side; And a welding part joined to the joining surface by a first welding method and connected to a second conductor made of aluminum by a second welding method.
In addition, a conductor sleeve for connecting a power cable having an aluminum conductor and a terminal junction box having the same are made of copper, a body having a contact portion exposed to the outside on one side and a bonding surface on the other side; And a welding part joined to the joining surface by a first welding method and connected to the aluminum conductor of the power cable by a second welding method.

Description

A conductor sleeve for connecting power cables with heterogeneous conductors, A conductor sleeve for connecting power cables with aluminum conductors, a method of manufacturing the same, and a junction box provided therewith {A Conductor Sleeve for Connecting Power Cables Having Different Conductors, A Conductor Sleeve for Connecting Aluminum Conductor Power Cable, A Method of Manufacturing the Same, and A Joint Box Having the Same}

The present invention relates to a conductor sleeve for connecting a power cable having different conductors, a conductor sleeve for connecting a power cable having an aluminum conductor, a manufacturing method thereof, and a junction box having the same.

More specifically, the present invention manufactures the body of the conventional conductor sleeve used for the intermediate junction, and the body of the conventional conductor sleeve of aluminum material used for the termination connection made of copper material, and also the weld portion of the aluminum material on one side of the body Manufactured by joining by rotational friction welding method, it is possible to connect power cables with heterogeneous conductors made of aluminum and copper, has high corrosion resistance and high mechanical strength, and has a strong connection between welds and aluminum conductors. The present invention relates to a conductor sleeve for connecting a power cable with a heterogeneous conductor, a conductor sleeve for connecting a power cable with an aluminum conductor, a method of manufacturing the same, and a junction box having the same.

In general, a power cable gathers power lines to supply power to each other to form a main insulating layer with a synthetic resin, and to form a metallic sheath and a synthetic resin layer for the insulation thereof to protect the desired, through the ground or ground An electric wire used to power a place.

A junction box is used to connect the above-mentioned power cable. A junction box is divided into a termination junction and an intermediate junction. Termination junction boxes are classified into air termination junction boxes, end junction boxes in gas, and termination junction boxes in oil, etc., and intermediate junction boxes are normally joint and insulation joints. ) And the like.

The intermediate junction box is used to connect the cable and the cable, and one of the components constituting the intermediate junction box serves to connect and fix the power cable connected in the intermediate junction box so that it can be fully energized. .

1A is a schematic cross-sectional view of an intermediate junction box according to the prior art, and FIG. 1B is a cross-sectional view showing the structure of a conventional conductor sleeve used in the intermediate junction box according to the prior art shown in FIG. 1A.

1A and 1B, an intermediate junction box 101 according to the prior art includes a pair of power cables 120a and 120b having first and second conductors 124a and 124b, respectively; A conductor sleeve (130) for receiving first and second conductors (124a, 124b) of the pair of power cables (120a, 120b), respectively; An insulation unit (140) provided outside the conductor sleeve (130) to insulate the pair of cables (120a, 120b); And a protective tube 150 wrapped to protect the outside of the insulating unit 140.

In the conventional conductor sleeve 130 used for the intermediate junction box 101 described above, both the first and second conductors 124a and 124b used in the pair of power cables 120a and 120b are made of copper or aluminum. It is used when connecting a pair of power cables 120a and 120b having the same kind of conductors. The conductor sleeve 130 may be formed of copper material when the first and second conductors 124a and 124b of the pair of cables 120a and 120b are made of copper, respectively. It has a body 132, the first and second receiving grooves (134a, 134b) for receiving the 124a, 124b is formed, the body 132 is made of a copper material. The copper first and second conductors 124a and 124b are inserted into the first and second receiving grooves 134a and 134b and then compressed and connected to each other so that the conductor sleeve 130 is in the intermediate junction box 101. Fix the pair of power cables (120a, 120b) in.

FIG. 1C is a view showing a method of connecting cables of the same type, in which both the first and second conductors used in a pair of power cables according to the prior art are made of aluminum.

Referring to FIG. 1C, the first and second conductors 124a and 124b used in the pair of power cables 120a and 120b according to the prior art connect the same type of cable 120a and 120b made of aluminum. In this case, no separate conductor sleeve is used. In this case, the first insulator 122a of the first cable 120a and the first insulator 122a of the first cable 120a are peeled off to expose the first aluminum conductor 124a and the second aluminum conductor 124b. Thereafter, a method of directly connecting the first and second aluminum conductors 124a and 124b by forming a bead 125 by a welding method using an aluminum welding rod is used.

Meanwhile, The terminal junction box is a junction box used at the end of the power cable and is classified into the air terminal junction box, the gas termination junction box, and the oil-based termination junction box as described above.

FIG. 1D is a schematic cross-sectional and enlarged cross-sectional view of a termination box according to the prior art, and FIG. 1E is a cross-sectional view showing the structure of a conventional conductor sleeve used in the intermediate junction according to the prior art shown in FIG. 1D.

1D and 1E, a termination box 102 according to the prior art includes a power cable 120b having an aluminum conductor 124b; A conductor sleeve 130 connecting the aluminum conductor 124b of the power cable 120b and having a contact portion 135a exposed to the outside; And a protective tube 150 wrapped to protect the outside of the conductor sleeve 130.

The conventional conductor sleeve 130 used in the above-mentioned termination box 102 is made of an aluminum material as a whole of the body 132 to connect with the power cable 120b having the aluminum conductor 124b. The body 132 has a contact portion 135a exposed to the outside from one end of the terminal junction box 130 on one side, and a welded portion 135b on the other side. The weld part 135b is directly connected through the formation of the bead 125 which used the electric cable 120b with the aluminum conductor 124b, and the aluminum electrode.

As described above, the conventional conductor sleeve 130 used for the intermediate junction box 101 shown in FIGS. 1A and 1B is provided with the same type of first and second conductors 124a and 124b made of copper material. Only a pair of power cables 120a and 120b can be connected, provided with different types of conductors (eg, one of the first and second conductors 124a and 124b is made of copper and the other is made of aluminum) It cannot be used to connect a pair of power cables 120a and 120b. More specifically, in the conventional junction box, when one of the first and second conductors 124a and 124b used for the pair of power cables 120a and 120b is made of aluminum and the other is made of copper, The melting point of aluminum and copper has a big difference at 660 ° C and 1,084 ° C, respectively. Therefore, in the case of using a melt welding method such as commonly used electric welding or heat welding, the joining by welding is substantially impossible because aluminum is completely melted at the melting point of copper. Therefore, there is a problem that the conventional conductor sleeve 130 cannot be used to connect a pair of power cables 120a and 120b having heterogeneous conductors.

In addition, as shown in FIG. 1C, the pair of power cables 120a and 120b having the same type of first and second conductors 124a and 124b made of aluminum may be welded without using a separate conductor sleeve. The beads 125 are formed to be directly connected. This integrated connection method has a problem that it cannot be used to connect a pair of power cables 120a and 120b having heterogeneous conductors, one of which is made of aluminum and the other of which is made of copper.

In addition, as shown in FIGS. 1D and 1E, when the conventional conductor sleeve 130 used for the termination box 102 is made of aluminum, the contact portion 135a of the conductor sleeve 130 may be air, gas, Exposed in oil. In this case, the conductor sleeve 130 has a disadvantage in that the corrosion resistance is weak compared to the copper material, and the mechanical strength is weak.

In addition, the first and second aluminum conductors are directly connected by welding a pair of power cables 120a and 120b having the first and second aluminum conductors 124a and 124b as shown in FIG. 1C. 124a and 124b have a cross section cut perpendicular to the longitudinal direction, and in the conventional conductor sleeve 130 used for the termination junction 102 shown in FIGS. 1D and 1E, the aluminum conductor of the power cable 120b ( A weld 135b for welding with 124b has a cross section cut perpendicular to the longitudinal direction. This rectangular cross-sectional structure minimizes the contact area when welding between the first and second aluminum conductors 124a and 124b (see FIG. 1C) or when welding between the aluminum conductor 124b and the weld 135b (see FIG. 1D). Connecting portion between the first and second aluminum conductors 124a and 124b after welding or connecting portion between the welding portion 135b and the aluminum conductor 124b (for example, the portion where the beads 125 of FIG. 1C or 1D are formed). The disadvantage was that they did not have sufficient strength to maintain this robust connection.

The present invention is to solve the above-mentioned problems of the prior art, to provide a conductor sleeve capable of connecting a power cable having a hetero conductor in an intermediate junction box, and an intermediate junction box having the same.

In addition, the present invention provides a conductive sleeve having a high corrosion resistance and high mechanical strength when connecting a power cable having an aluminum conductor in a termination box, a conductor sleeve capable of a rigid connection between a weld and an aluminum conductor, and a termination box having the same. It is for.

The present invention also provides a conductor sleeve capable of connecting a power cable having heterogeneous conductors in an intermediate junction box, and a conductor sleeve having strong corrosion resistance and high mechanical strength in a terminal junction box, and capable of a rigid connection between a weld and an aluminum conductor. It is to provide a method.

The conductor sleeve used for the intermediate junction according to the first aspect of the present invention includes a body having a receiving groove for accommodating a first conductor made of copper on one side and a joining surface on the other side; And a welding part joined to the joining surface by a first welding method and connected to a second conductor made of aluminum by a second welding method.

According to a second aspect of the present invention, an intermediate junction box includes: first and second power cables having first and second conductors made of copper and aluminum, respectively; One side has a receiving groove for accommodating the first conductor and the other side has a body having a joining surface, and a welding part joined to the joining surface by a first welding method and connected to the second conductor by a second welding method. Conductor sleeve having; An insulation unit provided outside of the conductor sleeve and insulating the first and second power cables; And it characterized in that it comprises a protective tube wrapped to protect the outside of the insulating unit.

The conductor sleeve used in the terminal connection box according to the third aspect of the present invention is made of a copper material, the body having a contact portion exposed to the outside on one side and a bonding surface on the other side; And a welding part joined to the joining surface by a first welding method and connected to the aluminum conductor of the power cable by a second welding method.

According to a fourth aspect of the present invention, a terminal box includes: a power cable having an aluminum conductor; It is made of a copper material, one side is provided with a contact portion exposed to the outside and the other side is a body having a joint surface, and the welding surface is joined to the joint surface by the first welding method, the welding portion is connected to the aluminum conductor by a second welding method Conductor sleeve having; And a protective tube wrapped to protect the outside of the conductor sleeve and the power cable.

A method of manufacturing a conductor sleeve for use in an intermediate junction according to a fifth aspect of the present invention comprises the steps of: a) joining a body made of a copper rod and a welded portion made of an aluminum rod using a rotational friction welding method; And b) forming an accommodating groove for accommodating a copper conductor on one side of the body, and forming an inclined cross-sectional shape or a wedge cross-sectional shape at the end of the welded portion.

A method of manufacturing a conductor sleeve for use in a termination box according to a sixth aspect of the present invention includes a) joining a body made of a copper rod and a welded portion made of an aluminum rod using a rotational friction welding method; And b) forming an inclined cross-sectional shape or a wedge cross-sectional shape at the end of the welded portion.

The following advantages can be achieved by using a conductor sleeve for connecting a power cable with a different conductor of the present invention, a conductor sleeve for connecting a cable with an aluminum conductor, a method of manufacturing the same, and a junction box having the same.

1. It is possible to connect power cables with different conductors in the intermediate junction box.

2. In the intermediate junction box and terminating junction box, the aluminum conductors have an inclined cross-sectional shape or a wedge shape, so that the weld cross section is increased to enable a firm connection between the weld and the aluminum conductor after welding.

3. The contact part of the conductor sleeve exposed to air, gas and oil in the end junction box is made of copper material, which improves the corrosion resistance and mechanical strength compared to the existing aluminum material.

4. The advantages of 1 to 3 described above reduce the maintenance costs of the conductor sleeve and the intermediate junction box or termination box and increase the service life.

1A is a schematic cross-sectional view of an intermediate junction box according to the prior art.
FIG. 1B is a cross-sectional view showing the structure of a conventional conductor sleeve used in the intermediate junction according to the prior art shown in FIG. 1A.
FIG. 1C is a view showing a method of connecting cables of the same type, in which both the first and second conductors used in a pair of power cables according to the prior art are made of aluminum.
1D is a schematic cross-sectional and enlarged cross-sectional view of a termination junction according to the prior art.
FIG. 1E is a cross-sectional view showing the structure of a conventional conductor sleeve used for the intermediate junction according to the prior art shown in FIG. 1D.
Figure 2a is a cross-sectional view showing the structure of a conductor sleeve according to an embodiment of the present invention for connecting a pair of power cables consisting of different conductors.
FIG. 2B is a schematic cross-sectional view of an intermediate junction box according to one embodiment of the present invention with the conductor sleeve shown in FIG. 2A.
2C is a cross-sectional view showing the structure of a conductor sleeve according to an embodiment of the present invention used for terminating a connection for connecting a power cable made of aluminum conductor.
FIG. 2D is a schematic cross-sectional and enlarged cross-sectional view of a termination junction according to an embodiment of the present invention having the conductor sleeve shown in FIG. 2C.
3A and 3B schematically illustrate a rotational friction welding apparatus and a welding method used to join a copper bar for a joint of a body and an aluminum bar for a weld used to manufacture a conductor sleeve according to an embodiment of the present invention. to be.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments and drawings of the present invention.

Figure 2a is a cross-sectional view showing the structure of a conductor sleeve according to an embodiment of the present invention for connecting a pair of power cables made of dissimilar conductors, Figure 2b is a view of the present invention having a conductor sleeve shown in Figure 2a Schematic cross-sectional view of an intermediate junction box according to an embodiment.

2A and 2B, the conductor sleeve 230 according to the embodiment of the present invention used in the intermediate junction box 201 has a receiving groove for accommodating a first conductor 224a made of copper on one side thereof. A body 232 having 234a and having a bonding surface 232a on the other side thereof; And a welding part 235b that is joined to the joint surface 232a by a first welding method and is connected to a second conductor 224b of aluminum material by a second welding method.

In addition, the intermediate junction box 201 according to an embodiment of the present invention includes first and second power cables 220a and 220b having first and second conductors 224a and 224b made of copper and aluminum, respectively. ; One side has a receiving groove 234a for accommodating the first conductor 224a and the other side has a body 232 having a joining surface 232a, and the joining surface 232a is joined to the first welding method. A conductor sleeve 230 having a welding portion 235b connected to the second conductor 224b by a second welding method; An insulation unit 240 provided outside the conductor sleeve 230 and insulating the first and second power cables 220a and 220b; And a protective tube 250 wrapped to protect the outside of the insulating unit 240.

Here, the body 232 of the conductor sleeve 230 is made of a copper material, the weld 235b is made of aluminum. The second conductor 224b made of aluminum of the weld 235b and the second power cable 210b has a sloped cross-sectional shape 236a or a wedge cross-sectional shape 236b, respectively, to increase the welding area or contact area during welding. It is desirable to. The inclination angle A of the inclined cross-sectional shape 236a is approximately 30 to 60 degrees, and the wedge angle B of the wedge cross-sectional shape 236b is approximately 60 to 120 degrees.

In the embodiment of the present invention shown in FIGS. 2A and 2B described above, the rotational friction welding is a first welding method for joining the welding surface 232a and the welding portion 235b made of different materials such as copper and aluminum. Method is used. On the other hand, the second welding method for connecting the welding portion 235b and the second conductor 224b made of the same material is a metal inert gas (MIG) welding method using an inert gas such as, for example, argon (Ar). (Or inert gas arc welding method) (hereinafter referred to as "MIG welding method") may be used.

Referring again to FIGS. 2A and 2B, in the conductor sleeve 230 and the intermediate junction box 201 having the same, the first conductor 224a made of copper is the conductor sleeve 230. After insertion and accommodation in the receiving groove 234a of the electrical and mechanical connection is made by compression. On the other hand, the first conductor 224b made of aluminum and the welded portion 235b of the conductor sleeve 230 have the above-described MIG welding in a state where the inclined cross-sectional shape 236a or the wedge cross-sectional shape 236b formed at each end are connected to each other. Connection is made by forming the beads 225 by the method (see FIG. 2B).

FIG. 2C is a cross-sectional view showing the structure of a conductor sleeve according to an embodiment of the present invention used for terminating a connection for connecting a power cable made of aluminum conductor, and FIG. 2D is a bone with a conductor sleeve shown in FIG. 2C. Schematic cross-sectional view and enlarged cross-sectional view of a termination box according to an embodiment of the invention.

2C and 2D, the conductor sleeve 230 according to the embodiment of the present invention used for the termination box 202 is made of copper and has a contact portion 235a exposed to the outside on one side. And the other side body 232 having a bonding surface (232a); And a weld 235b that is joined to the joint surface 232a by a first welding method and is connected to the aluminum conductor 224b of the power cable 220b by a second welding method.

In addition, the termination box 202 according to an embodiment of the present invention includes a power cable 220b having an aluminum conductor 224b; It is made of a copper material, one side is provided with a contact portion 235a exposed to the outside and the other side is bonded to the body 232 having a bonding surface 232a, and the bonding surface 232a by a first welding method, A conductor sleeve (230) having a weld (235b) connected to the aluminum conductor (224b) by a second welding method; And a protective tube 250 surrounding the outer side of the conductor sleeve 230 and the power cable 220b.

Here, since the body 232 of the conductor sleeve 230 is made of copper material, even if the contact portion 235a of the conductor sleeve 230 is exposed to the outside, such as air, gas, or oil, corrosion resistance is improved, and mechanical strength is increased. do.

In addition, the weld 235b and the conductor 224b are made of aluminum. Therefore, the welding part 235b and the aluminum conductor 224b of the power cable 210b are connected by the MIG welding method as mentioned above. In this case, the weld 235b and the aluminum conductor 224b preferably have an inclined cross-sectional shape 236a or a wedge cross-sectional shape 236b, respectively, to increase the weld area or contact area during welding. The inclination angle A of the inclined cross-sectional shape 236a is approximately 30 to 60 degrees, and the wedge angle B of the wedge cross-sectional shape 236b is approximately 60 to 120 degrees.

In the embodiment of the present invention shown in FIG. 2C and FIG. 2C described above, as the first welding method for joining the welding surface 232a and the welding portion 235b made of different materials such as copper and aluminum, rotational friction welding is used. Method is used.

In addition, in the conductor sleeve 230 and the terminal junction box 202 having the same, the weld 235b of the aluminum conductor 224b and the conductor sleeve 230 is inclined at each end. The connection is made by forming the bead 225 by the above-mentioned MIG welding method in the state where the cross-sectional shape 236a or the wedge cross-sectional shape 236b were mutually connected (refer FIG. 2D).

3A and 3B schematically illustrate a rotational friction welding apparatus and a welding method used to join a copper bar for a joint of a body and an aluminum bar for a weld used to manufacture a conductor sleeve according to an embodiment of the present invention. to be.

3A and 3B together with FIGS. 2A and 2B, a method of manufacturing a conductor sleeve 230 according to a first embodiment of the present invention used for an intermediate junction box 201 is a) a body made of copper rods ( 232 and the welding portion 235b made of aluminum rods, using a friction welding method; And b) an accommodating groove 234a for accommodating the copper conductor 224a on one side of the body 232, and having an inclined cross-sectional shape 236a or a wedge cross-sectional shape 236b at the end of the welding portion 235b. Forming a step.

3A and 3B together with FIGS. 2C and 2D, the method of manufacturing the conductor sleeve 230 according to the second embodiment of the present invention used for the terminal junction box 201 is made of a) a copper rod. Joining the weld 235b formed of the body 232 and the aluminum rod using a rotational friction welding method; And b) forming an inclined cross-sectional shape 236a or a wedge cross-sectional shape 236b at the end of the weld 235b.

Here, the rotation friction welding method is a solid state joining method in which the material is softened and joined by frictional heat generated by applying instantaneous rotational force and pressing force while rotating heterogeneous materials such as copper bars and aluminum bars.

Rotary friction welding method used in the manufacturing method of the conductor sleeve 230 according to the first and second embodiments of the present invention described above is a1) any one of the copper rod and the aluminum rod of the rotary friction welding apparatus 300 Fixedly mounting to the rotating member (303a) and fixing the other to the fixed member (303b) of the rotary friction welding device (300), respectively; a2) moving the fixing member (303b) in the direction of the rotating member (303a) while rotating the rotating member (303a) at a constant process rotational speed (rpm); a3) pressing the copper rod and the aluminum rod during a first process time t1 at a first process pressure P1 when the copper rod and the aluminum rod meet each other; a4) stopping the rotating member 303a after the first process time t1 has elapsed and pressurizing the copper rod and the aluminum rod for a second process pressure P2 and a second process time t2. .

In the above-described rotational friction welding method, the rotating operation of the rotating member 303a is performed by a rotating motor (not shown), and the moving and pressing operation of the fixing member 303b moves the fixing member 303b to the driving motor 305. For example by moving on a screw 307.

In addition, the first process pressurization time t1 among the above-described process factors may be replaced by the amount of friction. Here, the friction amount refers to the length reduced by the friction after the copper rod and the aluminum rod butt.

As described above, the first process pressure P1, for the copper rods and aluminum rods of 30 to 50 mm diameter used as the body 232 using the rotary friction welding apparatus 300 shown in FIGS. 3A and 3B, Four experiments of the rotational friction welding method were carried out while changing five process factors, namely, the two process pressures P2, the secondary process time t2, the rotational speed rpm of the rotating member 303a, and the friction amount. In addition, through the tensile test of the junction of the body 232 and the weld 235b obtained through four rotational friction welding method experiments, the process conditions having the optimum mechanical strength were confirmed. The results are shown in Table 1 below.

Process pressure
P1 (Mpa) Second process pressure
P2 (Mpa) Rotation speed
(rpm) 2nd process time t2
(sec) Friction
(mm) The tensile strength
(Mpa) One 5-8 5-10 800-1500 5 5-10 70 2 3-5 10-15 1000-2000 10 5-10 75 3 5-8 10-15 1000-2000 10 5-10 80 or more 4 7-10 15-20 2000-3000 15 5-10 70

As can be seen in Table 1, the tensile strength was the maximum in the third experiment, it can be seen that this is the optimum process conditions.

Various modifications may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the following claims. It is not. Accordingly, the scope of the present invention should not be limited by the above-described exemplary embodiments, but should be determined only in accordance with the following claims and their equivalents.

101,201: intermediate junction box 102,202: termination junction box
120a, 120b; 220a, 220b: power cable 122a, 122b; 222a, 222b: insulator
124a, 124b; 224a, 224b: conductors 125,225: beads
130,230: conductor sleeve 132,232: body 232a: joint surface
134a, 134b, 234a: receiving groove 135a, 235a: contact 135b, 235b: weld
140,240: insulation unit 150,250: sheath
236a: sloped cross-sectional shape 236b: wedge cross-sectional shape
300: rotating friction welding device 303a: rotating member
303b: fixing member 305: drive motor 307: screw

Claims (23)

In the conductor sleeve used for the intermediate junction box,
A body having an accommodating groove for accommodating a first conductor made of copper and having a joining surface on the other side thereof; And
A welded portion joined to the joining surface by a first welding method and connected to a second conductor made of aluminum by a second welding method
Conductor sleeve comprising a. The method of claim 1,
The body is made of a copper material, the weld portion is a conductor sleeve made of aluminum. The method of claim 2,
Each of the welded portion and the second conductor has an inclined cross-sectional shape or a wedge cross-sectional shape at each end thereof. The method of claim 3,
The inclined angle of the inclined cross-sectional shape is 30 to 60 degrees, the wedge angle of the wedge cross-sectional shape is 60 to 120 degrees. The method according to any one of claims 1 to 4,
The first welding method is a rotational friction welding method, and the second welding method is a MIG welding method. In the intermediate junction,
First and second power cables having first and second conductors of copper and aluminum, respectively;
One side has a receiving groove for accommodating the first conductor and the other side has a body having a joining surface, and a welding part joined to the joining surface by a first welding method and connected to the second conductor by a second welding method. Conductor sleeve having;
An insulation unit provided outside of the conductor sleeve and insulating the first and second power cables; And
Protective tube wrapped to protect the outside of the insulation unit
Intermediate junction containing a. The method of claim 6,
The body is made of copper material, the welding portion is an intermediate junction made of aluminum material. The method of claim 7, wherein
And the welded portion and the second conductor each have an inclined cross section or a wedge cross section. The method of claim 8,
The inclination angle of the inclined cross-sectional shape is 30 to 60 degrees, the wedge angle of the wedge cross-sectional shape is 60 to 120 degrees. The method according to any one of claims 6 to 9,
The first welding method is a rotational friction welding method, and the second welding method is a MIG welding method. In the conductor sleeve used for the termination box,
It is made of a copper material, one side having a contact portion exposed to the outside and the other side having a bonding surface; And
A welded portion joined to the joining surface by a first welding method and connected to an aluminum conductor of a power cable by a second welding method
Conductor sleeve comprising a. 12. The method of claim 11,
Each of the welded portion and the aluminum conductor has an inclined cross-sectional shape or a wedge cross-sectional shape at each end thereof. The method of claim 12,
The inclined angle of the inclined cross-sectional shape is 30 to 60 degrees, the wedge angle of the wedge cross-sectional shape is 60 to 120 degrees. The method according to any one of claims 11 to 13,
The first welding method is a rotational friction welding method, and the second welding method is a MIG welding method. In the terminating junction,
Power cables with aluminum conductors;
It is made of a copper material, one side is provided with a contact portion exposed to the outside and the other side is a body having a joint surface, and the welding surface is joined to the joint surface by the first welding method, the welding portion is connected to the aluminum conductor by a second welding method Conductor sleeve having; And
Protective tube wrapped to protect the outside of the conductor sleeve and the power cable
Termination junction comprising a. 16. The method of claim 15,
The welded portion and the aluminum conductor, each end of the end connection has an inclined cross-sectional shape or a wedge cross-sectional shape. 17. The method of claim 16,
The inclination angle of the inclined cross-sectional shape is 30 to 60 degrees, the wedge angle of the wedge cross-sectional shape is 60 to 120 degrees longitudinally connected. The method according to any one of claims 15 to 17,
The first welding method is a rotational friction welding method, and the second welding method is a MIG welding method. In the manufacturing method of the conductor sleeve used for the intermediate junction box,
a) joining the body made of copper rods and the welded portion made of aluminum rods using a rotational friction welding method; And
b) forming an accommodating groove for accommodating a copper conductor on one side of the body, and forming an inclined cross-sectional shape or a wedge cross-sectional shape at the end of the welded part;
Method for producing a conductor sleeve comprising a. In the manufacturing method of the conductor sleeve used for the terminal connection box,
a) joining the body made of copper rods and the welded portion made of aluminum rods using a rotational friction welding method; And
b) forming an inclined cross-sectional shape or a wedge cross-sectional shape at the end of the welded portion;
Method for producing a conductor sleeve comprising a. The method of claim 19 or 20,
The rotary friction welding method
a1) fixedly mounting one of the copper rod and the aluminum rod to the rotating member of the rotary friction welding device, and fixedly mounting the other to the fixed member of the rotary friction welding device;
a2) moving the fixing member in the direction of the rotating member while rotating the rotating member at a constant process rotational speed (rpm);
a3) pressing the copper rod and the aluminum rod during a first process time t1 at a first process pressure P1 when the copper rod and the aluminum rod meet each other; And
a4) stopping the rotating member after the first process time t1 and pressing the copper rod and the aluminum rod during the second process pressure P2 and the second process time t2
Method for producing a conductor sleeve comprising a. The method of claim 21,
And a friction amount of a length reduced by friction after the copper rod and the aluminum rod are joined to each other instead of the first process time t1 in the step a3). The method of claim 22,
Diameter of the copper rod and the aluminum rod are each 30 to 50 mm,
The constant process rotational speed is 1000-2000 rpm,
The first process pressure (P1) is 5-8 Mpa,
The friction amount is 5-10 mm,
The second process pressure (P2) is 10-15Mpa,
The second process time t2 is 10 sec
Method for producing a conductor sleeve.

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