KR20190106531A - Connecting Structure of Power Cable Conductor And Connecting Device Of The Same - Google Patents

Abstract

The present invention relates to a conductor connection structure of a power cable and a conductor connection device of a power cable. The conductor connection structure of a power cable reduces a work time of a conductor connection work, increases workability at the same time, and enables a stable connection of a sleeve member and a conductor unit of the power cable so as to increase connection quality.

Description

Connecting Structure of Power Cable Conductor And Connecting Device Of The Same}

The present invention relates to a conductor connecting structure of a power cable and a power cable conductor connecting device. More specifically, the present invention reduces the working time of the conductor connection work and at the same time improves the workability, and enables the conductor connection of the power cable to improve the connection quality by enabling a stable connection with the conductor portion of the sleeve member and the power cable. The present invention relates to a structure and a power cable conductor connecting device.

The conductor portion of the power cable may be a copper (Cu) conductor or an aluminum (Al) conductor. In addition, the conductor portion is often formed by associating a plurality of element wires for bending characteristics and the like.

In addition, in the case of the copper conductor, the elementary insulated conductor part in which a plurality of element wires are insulated from each other may be formed in consideration of the skin effect of the metal and the like when the current is applied.

In the case of connecting such a power cable, conventionally, the insulation layer of each wire constituting the conductor portion is removed and collected again to bring the conductor portions of both connected power cables into contact with each other, and then a crimping method is used.

However, the method of connecting the conductor parts of both cables by removing the insulating layers of the respective wires constituting the conductor part and reassembling them by crimping method takes a long working time and the potential quality due to the scattering of the conductive material during the stripping of the insulating layer. There is a problem that there is a risk and requires considerable work proficiency.

The present invention reduces the working time of the conductor connection work and at the same time improves the workability, the conductor connection structure and power cable of the power cable that can improve the connection quality by enabling a stable connection with the conductor portion of the sleeve member and the power cable It is an object of the present invention to provide a conductor connecting device.

In order to solve the above problems, the present invention provides a conductor connection structure of a power cable for connecting a conductor portion composed of a plurality of element wires of a power cable, comprising: a conductor portion of a pair of cables; It is divided into two pipe-shaped first sleeves and second sleeves in the longitudinal direction so as to be selectively fastened or separated, a pair of the conductor portion is inserted into the openings at both ends, and a plurality of fastening holes are provided A sleeve member in the form of a pipe; A plurality of conductor particles inserted into the receiving space between the ends of the pair of conductor portions inserted into the sleeve member to electrically connect the pair of conductor portions; At least one electricity supply bolt fastened to a fastening hole of the sleeve member to pressurize the conductor particles introduced into the accommodation space to electrically connect the pair of conductor parts; And a fixing bolt fastened to a fastening hole of the sleeve member in order to fix the conductor part inserted into the sleeve member.

In addition, in order to solve the above problems, the present invention provides a conductor connection structure of a power cable for connecting a conductor portion composed of a plurality of element wires of a power cable, comprising: a conductor portion of a pair of cables; It is divided into two pipe-shaped first sleeves and second sleeves in the longitudinal direction so as to be selectively fastened or separated, a pair of the conductor portion is inserted into the openings at both ends, and a plurality of fastening holes are provided A sleeve member in the form of a pipe; At least one electricity supply bolt fastened to a fastening hole between ends of the pair of conductor parts inserted into the sleeve member, and fastened to a fastening hole of the sleeve member to electrically connect the pair of conductor parts; And a fixing bolt fastened to a fastening hole of the sleeve member in order to fix the conductor part inserted into the sleeve member.

In this case, the width between the pair of end portions of the conductor portion inserted into the sleeve member may be smaller than the width of the fastening portion in which the thread of the current-carrying bolt is formed.

The first sleeve and the second sleeve constituting the sleeve member may be made of tin plated copper or tin plated copper alloy.

Here, the fixing bolt and the electricity supply bolt may be a broken bolt made of brass or a brass alloy material.

In addition, a plurality of fastening holes for energizing the plurality of energizing bolts may be formed at predetermined intervals along the circumferential direction at the center of the sleeve member in which the first sleeve and the second sleeve are fastened.

In this case, a plurality of fastening holes for fastening the plurality of fastening bolts may be formed in an area other than the center of the sleeve member in which the first sleeve and the second sleeve are fastened.

In addition, the first sleeve and the second sleeve constituting the sleeve member may be provided with a female fastening portion and a male fastening portion, each of which is threaded to be screwed together.

Here, the length of the sleeve member in the state in which the first sleeve and the second sleeve are fastened may be greater than the length of the exposed conductor portion of any one cable connected.

In addition, in order to solve the above problems, the present invention is a power cable conductor connecting device for connecting a pair of conductors consisting of a plurality of element wires of the power cable to each other, the two in the longitudinal direction to be selectively fastened or separated A pipe-shaped sleeve member which is divided into a first sleeve and a second sleeve in a pipe shape, and the conductor part is inserted into openings at both ends thereof and includes a plurality of fastening holes; A plurality of conductor particles accommodated in a receiving space between the pair of conductor portions inserted into the sleeve member to electrically connect the pair of conductor portions; At least one electricity supply bolt fastened to the fastening hole to electrically connect the conductor particles to the pair of conductor parts; And at least one fixing bolt fastened to the fastening hole to fix the conductor portion accommodated in the sleeve member.

In addition, in order to solve the above problems, the present invention is a power cable conductor connecting device for connecting a pair of conductors consisting of a plurality of element wires of the power cable to each other, the two in the longitudinal direction to be selectively fastened or separated A pipe-shaped sleeve member which is divided into a first sleeve and a second sleeve in a pipe shape, and the conductor part is inserted into openings at both ends thereof and includes a plurality of fastening holes; At least one energizing bolt fastened to a fastening hole between ends of the pair of conductor parts inserted into the sleeve member to electrically connect the pair of conductor parts; And at least one fixing bolt fastened to the fastening hole to fix the conductor portion accommodated in the sleeve member.

In this case, the width between the pair of end portions of the conductor portion inserted into the sleeve member may be smaller than the width of the fastening portion in which the thread of the current-carrying bolt is formed.

The sleeve member may be made of tin plated copper or tin plated copper alloy.

Here, the fixing bolt and the electricity supply bolt may be a broken bolt made of brass or a brass alloy material.

In addition, a plurality of fastening holes for fastening the plurality of energizing bolts may be formed at predetermined intervals in the circumferential direction at the center of the sleeve member.

In this case, a plurality of fixing fastening holes to which a plurality of fixing bolts are fastened may be spaced apart from the central portion of the sleeve member.

In addition, the first sleeve and the second sleeve constituting the sleeve member may be provided with a female fastening portion and a male fastening portion, each of which is threaded to be screwed together.

Here, the length of the sleeve member in the state in which the first sleeve and the second sleeve are fastened may be greater than the length of the exposed conductor portion of any one cable connected.

According to the conductor connection structure of the power cable and the conductor connection structure of the power cable according to the present invention, the working time of the connection work can be greatly shortened as compared with the conventional method of stripping and crimping a wire conductor insulated.

In addition, according to the conductor connection structure of the power cable and the conductor connection structure of the power cable according to the present invention, since the broken bolt is used to connect the conductor portion of the power cable, the work cost can be greatly reduced because the work experience is not required. have.

In addition, according to the conductor connection structure of the power cable and the conductor connection structure of the power cable according to the present invention, the conductor particles are introduced into the sleeve center receiving space between the cut surfaces of the conductor portions of both cables, and the conductive wire is used as the fastening means. Since the pores inside the conductor particles are reduced to electrically connect the cut surfaces of both conductor parts, the scattering of the conductive material generated during the stripping of the insulation of the wires does not occur, and thus the stability may be improved in quality.

In addition, according to the conductor connection structure of the power cable and the conductor connection structure of the power cable according to the present invention, a space is formed between the conductor portions inserted between the sleeve members, and a method of directly contacting the conduction bolt with the side of the conductor portion. Electrical connection of the conductor parts further shortens working time and simplifies the process.

Further, according to the conductor connecting structure of the power cable and the conductor connecting structure of the power cable according to the present invention, even when the length of the sleeve member for connecting the conductor portion of the power cable is longer than the length of any one of the conductor portions, a divided sleeve is used. Can be easily mounted on each conductor.

Further, according to the conductor connection structure of the power cable and the conductor connection structure of the power cable according to the present invention, even if the connection length of the conductor portion of the power cable becomes longer, the divided sleeve member can be applied, so that the stable support of the power cable conductor portion is possible. Do.

1 shows a cross-sectional view of a power cable connectable by the conductor connection structure of the power cable according to the present invention.
Figure 2 shows a partially cutaway perspective view of the conductor connection structure of a power cable according to the invention.
3 shows an isolated perspective view of the first sleeve and the second sleeve of the sleeve member constituting the conductor connection structure of the power cable according to the present invention.
Figure 4 shows a cross-sectional view of the first sleeve and the second sleeve of the sleeve member constituting the conductor connecting structure of the power cable according to the present invention is fastened.
Fig. 5 shows a cross-sectional view of the conductor portion of the power cable connected by the conductor connection structure of the power cable according to the present invention.
6 illustrates a process in which the first sleeve and the second sleeve constituting the sleeve member constituting the conductor connection structure of the power cable according to the present invention are respectively mounted on the pair of conductor portions.
FIG. 7 illustrates a state in which the first sleeve and the second sleeve are engaged in a state where the first sleeve and the second sleeve constituting the sleeve member are respectively mounted on the pair of conductor parts.
8 to 11 show one embodiment of the connection process of the conductor connection structure of the power cable according to the present invention.
12 to 15 show one embodiment of the connection procedure of the conductor connection structure of the power cable according to the present invention.
Fig. 16 shows a perspective view of the connection structure of the power cable according to the present invention with the connection completed.
17 shows a state in which a corona shield is mounted on a connection structure of a power cable according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail. However, the invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the present invention to those skilled in the art. Like numbers refer to like elements throughout.

1 is a cross-sectional view of a power cable connectable by the conductor connection structure 400 of the power cable according to the present invention, Figure 2 is a partial cutaway perspective view of the conductor connection structure 400 of the power cable according to the present invention Illustrated.

The power cable as shown in FIG. 1 is laid for power supply, and the connection can be performed at predetermined intervals. In order to connect the power cables at predetermined intervals, the connection of the conductor portion 10 of the power cable must be preceded.

In the related art, the insulation layer of each element wire constituting the conductor portion 10 of the power cable is removed and collected again to bring the conductor portions 10 of both power cables to be connected to each other, and then a crimping method is used. The method of connecting the conductor parts 10 of both cables by the method of crimping by removing the insulating layers of the respective wires constituting the conductor part 10 and crimping them together takes a long time, and conducts the conductive layer during the stripping of the insulating layer. The present invention provides a conductor connection structure 400 of the power cable shown in FIG. 2 to solve the problem of having a potential quality risk due to the scattering of the material and requiring considerable work proficiency.

As shown in FIG. 1, the power cable 100 connectable by the connection structure 400 of the power cable according to the present invention includes a conductor portion 10 and an inner semiconducting layer 20 surrounding the conductor portion 10. ), The insulating layer 30 surrounding the inner semiconducting layer 20, the outer semiconducting layer 40 surrounding the insulating layer 30, the outer semiconducting layer 40, and made of a metal sheath or a neutral wire for electrical shielding and It may include a shielding layer 50 for returning the short-circuit current, the outer shell 60 surrounding the shielding layer 50 and the like.

The conductor part 10 may be formed of a stranded wire in which a single wire or a plurality of conductor wires made of copper, aluminum, and preferably copper are associated with each other, and the diameter of the conductor part 10 and the stranded wire 11 constituting the stranded wire. The standard including the diameter may be different according to the transmission voltage, the use, and the like of the power cable 100 including the same, and may be appropriately selected by a person skilled in the art.

Each wire 11 constituting the conductor part 10 is insulated from each other to maximize the amount of power transmission by reducing conductor resistance due to the skin effect.

Unlike the related art, as described below, the present invention inserts the conductor portion 10 of the cable connected to the sleeve member 200 and forms an insertion space at the center thereof to inject the conductor particles (mp) or empty space. And the conductive bolt 310 may be fastened to electrically connect the conductor portions 10 of both cables. Detailed description thereof will be described later.

The inner semiconducting layer 20 constituting the power cable 100 is disposed between the conductor portion 10 and the insulating layer 30 to lift the interlayers of the conductor portion 10 and the insulating layer 30. It removes the air layer that induces and alleviates local electric field concentration. On the other hand, the outer semiconducting layer 40 performs a function of applying an even electric field to the insulating layer 30, localized electric field concentration mitigation and protecting the cable insulating layer from the outside.

In general, the inner semiconducting layer 20 and the outer semiconducting layer 40 have conductive particles such as carbon black, carbon nanotubes, carbon nanoplates, graphite, and the like dispersed in a base resin, and a crosslinking agent, an antioxidant, a scorch inhibitor, and the like. It is formed by extrusion of the additionally added semiconducting composition.

Here, the base resin may be an olefin resin of a series similar to the base resin of the insulating composition for forming the insulating layer 30 for the interlayer adhesion between the semiconductive layers 20 and 40 and the insulating layer 30. .

In addition, the insulating layer 30 may be, for example, a polyolefin resin such as polyethylene or polypropylene as a base resin, and preferably, may be formed by extrusion of an insulating composition having a polyethylene resin as a base resin.

The polyethylene resin may be applied to ultra low density polyethylene (ULDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE) and the like, in the case of a high-pressure cable Cables are quickly being replaced by crosslinked polyethylene (XLPE) insulated cables.

In addition, the outer jacket 60 provided at the outermost portion of the cable may be formed of any one of polyethylene, polyvinyl chloride, and polyurethane.

The power cable connection structure according to the present invention shown in FIG. 2 may connect the conductor portion 10 of the power cable using the sleeve member 200 to which both conductor portions 10 of the cable to be connected are inserted and fixed.

Specifically, FIG. 2 shows a conductor connection structure 400 of a power cable for connecting a conductor portion 10 composed of a plurality of element wires of a power cable, the conductor portion 10 of a pair of cables; It is divided into two pipe-shaped first sleeves (200a) and second sleeves (200b) in the longitudinal direction to be selectively fastened or detached, a pair of the conductor portion 10 to each of the openings at both ends Is inserted into the receiving space between the end of the sleeve member 200 of the pipe shape having a plurality of fastening holes 210, 230, the pair of the conductor portion 10 inserted into the sleeve member 200 A plurality of conductor particles (mp) for electrically connecting the pair of conductor portions 10; At least one electricity supply bolt 310 fastened to a fastening hole of the sleeve member 200 in order to pressurize the conductor particles (mp) introduced into the accommodation space to electrically connect the pair of conductor parts 10; And a fixing bolt 330 fastened to a fastening hole of the sleeve member 200 to fix the conductor part 10 inserted into the sleeve member 200. ) Can be provided.

In addition, as will be described later with reference to FIGS. 12 to 15, the conductor connection structure 400 of the power cable according to the present invention does not insert conductor particles (mp) between the conductor portions 10, and thus accommodates an accommodation space. It is formed in a spaced apart space, and can provide a conductor connection structure 400 of the power cable connected via the electricity supply bolt 310 as a medium.

The power cable connection structure 400 according to the present invention does not directly conduct electricity by directly contacting the conductor portion 10 of the cable to be connected, and secures a conduction path through conductor particles (mp) or a conduction bolt 310.

The embodiment shown in Figure 2 forms a receiving space between the conductor portion 10 of the cable to be connected, and a plurality of conductor particles (mp) in the receiving space by pressing the current through the bolt 310 Although an embodiment is shown in which the pores of conductor particles (mp) in the receiving space are minimized and the internal pressure is increased so that the ends of both conductor portions 10 are electrically connected through the compressed conductor particles (mp), but without conductor particles. A method of electrically connecting the conductor portion 10 via the energizing bolt 310 and the sleeve member 200 may be used.

In addition, Figure 2 shows one embodiment of the conductor connection structure 400 of the power cable according to the present invention includes a conductor portion 10 in its configuration, the present invention is a conductor portion 10 of various cables A sleeve member 200 including a first sleeve 200a and a second sleeve 200b for connecting the same, a bolt for power transmission 310, and a fixing bolt 330, and the sleeve member 200 as necessary. A power cable including conductor particles (mp) that are inserted between the conductor parts 10 spaced apart from each other and are electrically compressed by the bolts for energization 310 to electrically connect both conductor parts 10 in a state where the gap is reduced. It can be understood to provide a conductor connecting device. Each structure is demonstrated in detail.

FIG. 3 shows a separated perspective view of the first sleeve 200a and the second sleeve 200b of the sleeve member 200 constituting the conductor connection structure 400 of the power cable according to the present invention, and FIG. The cross-sectional view of the state in which the 1st sleeve 200a and the 2nd sleeve 200b of the sleeve member 200 which comprise the conductor connection structure 400 of the electric power cable which concerns on this invention is fastened is shown.

The conductor connection structure 400 of the power cable according to the present invention is divided into two pipe-shaped first sleeves 200a and second sleeves 200b in the longitudinal direction so as to be selectively fastened or detached. The pair of conductor parts 10 may be inserted into openings at both ends, and may include a sleeve member 200 having a pipe shape having a plurality of fastening holes 210 and 230.

The first sleeve 200a and the second sleeve 200b constituting the sleeve member 200 may be made of a metal material having excellent electrical conductivity in the form of a pipe in which a plurality of fastening holes 210 and 230 are formed. For example, the first sleeve 200a and the second sleeve 200b constituting the sleeve member 200 may be made of tin plated copper or tin plated copper alloy.

In addition, the first sleeve 200a and the second sleeve 200b constituting the sleeve member 200 may be provided with fastening holes for fastening a plurality of bolts. Specifically, the first sleeve 200a and the second sleeve 200b constituting the sleeve member 200 each include a plurality of fixing fastening holes and the sleeve member 200 formed at predetermined intervals along the circumferential direction. One of the first sleeve 200a and the second sleeve 200b constituting the circumferential direction at the center of the state in which the first sleeve 200a and the second sleeve 200b constituting the sleeve member 200 are fastened It is provided with a fastening hole for the electricity formed formed at a predetermined interval along the.

In the embodiment shown in Figure 3, the fixing fastening hole 230 is provided in the first sleeve 200a and the second sleeve 200b, respectively, the power supply fastening hole 210 is a second sleeve ( Although only shown in the 200b), according to the interval between the conductor portion 10, that is, the size of the receiving space or the space spaced apart the fastening hole for the electricity may be provided in two or more lines in the center of the sleeve member (200). In this case, the second sleeve 200b may be provided with two or more lines of the fastening holes 210 only or the first sleeve 200a and the second sleeve 200b may each have at least one fastening hole 210. ) May be provided.

In conclusion, the center of the sleeve member 200 of the plurality of fastening holes 210 and 230 formed in the sleeve member 200 in which the first sleeve 200a and the second sleeve 200b illustrated in FIG. 4 are fastened. The fastening holes formed in the fastening holes are inserted into spaces or spaces formed between the ends of the conductor portions 10 of the cables to be connected to press the inserted conductor particles mp or electrically connect the ends of both conductor portions 10. Is a fastening hole 210 for fastening electricity supply bolts 310 for fastening, and fastening holes formed outside the center of the sleeve member 200 among the plurality of fastening holes 210 and 230 formed in the sleeve member 200. Silver may be understood as a fixing fastening hole 230 for fastening the fixing bolt 330 in the state in which the conductor portion 10 of the cable to be connected to fix the conductor portion 10 and the sleeve member 200. have.

3, the first sleeve 200a and the second sleeve 200b constituting the sleeve member 200 may be configured to be selectively fastened or separated.

Specifically, the embodiment shown in FIG. 3 is provided with a female fastening portion 220a and a male fastening portion 220b each having a screw thread formed to allow screwing of the first sleeve 200a and the second sleeve 200b. Can be.

3 and 4, a male fastening part 220b or a female fastening part 220a is provided in one of the sleeves as a method for fastening the first sleeve 200a and the second sleeve 200b. Although a method of forming a screw thread for screwing in each of the fastening portions is illustrated, the positions of the male fastening portion 220b and the female fastening portion 220a may be changed, and the first sleeve 200a and the second sleeve ( Other structures may be employed to selectively fasten or detach 200b).

5 shows a cross-sectional view of the conductor portion 10 of the power cable connected by the conductor connection structure 400 of the power cable according to the invention.

In order to configure the conductor connection structure 400 of the power cable according to the present invention using the aforementioned sleeve member 200, the sheath of the power cable should be removed and the conductor portion 10 should be exposed to the outside.

The power cable is connected at predetermined intervals for transportation, etc. during installation, and the distance cannot be easily adjusted by its weight, and the distance between the ends of the conductor portion 10 of the connected power cable is fastened when the power supply bolt 310 is fastened. It should be limited to a distance (b-2a) such that the end side surfaces of both conductor portions 10 are contacted together, and as shown in FIG. 5, a sleeve for conductor connection with both conductor portions 10 disposed therein. The member 200 must be mounted.

However, the length (a) of the exposed conductor portion 10 of any one of the power cables to which the entire length of the sleeve member 200, which is formed by fastening the first sleeve 200a and the second sleeve 200b, is connected. If smaller than), it is not necessary to divide the sleeve member 200 into the first sleeve 200a and the second sleeve 200b.

That is, in the state arranged in FIG. 5, any one of the conductor parts 10 may be lifted and the sleeve member 200 may be mounted, and the sleeve member 200 may be moved to the center to connect the conductor parts 10.

However, when the sleeve member 200 needs to have a length of the sleeve member 200 longer than the length of the exposed conductor portion 10 of any one power cable in order to stably fix or support the conductor portion 10. It may be difficult or impossible to mount one conductor portion 10 by lifting and mounting the other conductor portion 10 in the opening of the sleeve member 200 while the power cable is disposed.

Therefore, the sleeve member 200 constituting the conductor connection structure 400 of the power cable according to the present invention is divided into a first sleeve 200a and a second sleeve 200b, thereby improving workability and improving the workability. 200 may ensure a sufficient length to stably fix or support the conductor portion 10.

Therefore, the conductor connecting structure 400 of the power cable according to the present invention, if the length of the sleeve member 200 is required longer than the length of the conductor portion 10 of any one of the power cable to be connected, the sleeve member 200 Can be divided into two or more to improve workability.

FIG. 6 shows that the first sleeve 200a and the second sleeve 200b constituting the sleeve member 200 constituting the conductor connection structure 400 of the power cable according to the present invention are connected to the pair of conductor portions 10. FIG. 7 illustrates a process of mounting each, and FIG. 7 illustrates a first sleeve in a state in which the first sleeve 200a and the second sleeve 200b constituting the sleeve member 200 are mounted on the pair of conductor portions 10, respectively. The state in which 200a and the second sleeve 200b are fastened is illustrated.

Since the sleeve member 200 constituting the conductor connection structure 400 of the power cable according to the present invention is divided into a first sleeve 200a and a second sleeve 200b, as shown in FIG. 6, respectively. One sleeve is mounted to each conductor portion 10, and as shown in FIG. 7, the first sleeve 200a and the second sleeve 200b mounted on each conductor portion 10 are fastened to each other. The member 200 can be assembled. In this case, the position of the sleeve member 200 may be adjusted so that the position of the fastening hole for power supply of the assembled sleeve member 200 matches the space or the receiving space between the ends of the conductor part 10.

Hereinafter, a process of connecting the conductor portion 10 of the power cable using the electricity supply bolt 310 and the fixing bolt 330 will be described with reference to FIGS. 8 to 15.

8 to 11 illustrate one embodiment of the connection process of the conductor connection structure 400 of the power cable according to the present invention. In the conductor connection structure 400 of the power cable according to the present invention, the electricity supply bolt 310 or the fixing bolt 330 fastened to the fastening hole of the sleeve member 200 has a head portion when torque of a predetermined size is applied. It may be composed of a breaking bolt to be broken.

In addition, the electricity supply bolt 310 and the fixing bolt 330 may be made of brass.

As shown in FIG. 8, when the insertion of both conductor parts 10 is completed into the fastened sleeve member 200, a plurality of bolts for energization except for at least one energization fastening hole for inputting conductor particles (mp) are completed. 310 and the fixing bolt 330 can be temporarily fastened to each fastening hole. Here, the temporary fastening refers to a weak fastening state in which the bolt head is not broken as a temporary fastening state.

The reason for temporarily tightening the fixing bolt 330 in the state in which the conductor part 10 is inserted into the sleeve member 200 is that the fixing bolt 330 is performed when the main fastening of the head of the fixing bolt 330 is broken. This is because plastic deformation of the conductor part 10 is generated, and the conductor element wires are introduced into the accommodation space S, so that the input and interference of the conductor particles mp may occur.

In addition, the reason for temporarily fastening the bolt for current transmission 310 to the fastening hole 210 for electricity transmission except the conductor particle (mp) inlet is as follows. In order to maximize the effect of compressing by pressing the bolt 310, the main fastening of the way the head portion of the electricity supply bolt 310 is broken can be pushed back.

As shown in FIG. 9, a conductor particle (mp) input step of introducing the conductor particle (mp) into the accommodation space (S) may be performed. The maximum width of the conductor particles (mp) is 5% to 20% of the width of the receiving space (S) in order to prevent interference or jams in the input process, and to be evenly filled in the entire receiving space (S). It is desirable to be satisfied.

The conductor particles (mp) may be made of a metal material having good electrical conductivity. For example, the conductor particles (mp) may be made of silver, copper, or an alloy thereof, or may be plated with silver, copper, or an alloy thereof. It may be made of a metal material, a method of finely cutting the metal wire may be used as a method for configuring the conductor particles (mp).

Specifically, the conductor particles (mp) are copper, silver, copper alloy, silver alloy, silver plated copper, silver alloy plated copper, silver plated copper alloy, silver alloy plated copper alloy, copper plating silver, copper alloy plating silver, copper plating silver alloy, Copper alloy plating may be made of various materials such as alloys.

In addition, the material of the plurality of conductor particles (mp) may be composed of copper or an alloy thereof, or may be composed of various combinations as long as it is a metal material plated with silver, copper, or an alloy thereof.

As shown in FIG. 10, when the input of the conductor particles mp is completed, the main fastening of the fixing bolt 330 which is temporarily fastened before the main fastening of the energizing bolt 310 is performed is preferably performed. Do.

Specifically, as shown in Figure 10, the fixing bolt 330 is a method for plastically deforming or penetrating the conductor of the conductor portion 10 during the present fastening process to the sleeve member 200 and the conductor portion 10. A fixing step of the conductor part 10 to be fixed may be performed.

That is, in the state in which the conductor particle (mp) is injected into the sleeve member 200, the fixing bolt 330 is seen in the fixing fastening hole 230 before the fastening of the electricity supply bolt 310. It is desirable to fasten. This is to prevent the conductor portion 10 from being pushed back by the pressure applied during the main fastening process of the electricity supply bolt 310, and to strengthen the contact state between the end side of the conductor portion 10 and the conductor particles (mp). to be.

Conductor particles (mp) may be composed of small metal particles, etc. of a metallic material, and in a simple implanted state, a significant portion of the voids may exist between the particles. However, as shown in FIG. 11, when the fastening of the energizing bolt 310 is completed while the fastening of the fixing bolt 330 is completed, the gap between the conductor particles mp is reduced or eliminated and the conductor Since the contact area between the particles (mp) and the contact area between the conductor particles (mp) and the end side of the conductor portion (10) is widened, the contact resistance can be reduced. In this case, since the sleeve member 200 and the conductor part 10 are fixed by the fixing bolt 330, the sleeve member 200 and the conductor part 10 may not be pushed back in the process of fastening the energizing bolt 310.

Conventionally, in the case of connecting an insulated wire cable, a method of removing the insulation coating of each wire and crimping it has been used, but in the case of the power cable 100 connection structure according to the present invention, the conductor particles (mp) are used. Since the cross-section of the power cable 100 to be connected is electrically connected, it is not necessary to remove a separate insulating layer can be improved workability.

Subsequently, as shown in FIG. 11 while the main fastening of the fixing bolt 330 is performed, the electric power supply bolt 310 is fastened to the electric current fastening hole 210 used as the inlet for the conductor particles mp. As shown in FIG. 11, the fastening may be performed such that the head portion of the electricity supply bolt 310 is broken.

In the state in which the conductor part 10 is fixed to the sleeve member 200 by fastening the conductor bolt 10 to the fastening bolt 330 to the sleeve member 200 to fix the conductor part 10. By tightening the energizing bolt 310 to the sleeve member 200 to reduce the voids of the conductor particles (mp) introduced in the conductor particle (mp) input step, compressing, and the sleeve member through the compressed conductor particles (mp) A conduction step of conducting the conductor part 10 for electrically connecting the ends of the pair of conductor parts 10 inserted into the 200 may be performed.

The conducting step of conducting the conductor part 10 may allow the bolt for energization to be fastened to be in contact with the ends of the conductor part 10 and the conductor particles mp.

Specifically, when the conductive bolt 310 is fastened in the conducting step of the conductor part 10, the conductive bolt 310 enters the sleeve member 200 inward and the conductor particles (mp). Presses and presses, and at the same time, the body portion of the current-carrying bolt 310 having a diameter larger than the distance between the conductor ends (width of the receiving space) may contact the pair of ends of the conductor 10 (face). have. Therefore, the conduction bolt 310 and the conductor end are in direct contact so that the conductor end (face) is connected with the compressed conductor particle (mp) via the conduction bolt 310 to diversify the conduction path. Can be.

When the fastening bolt 330 is fastened as described above, the conductors in the receiving space (S) formed by the end of the pair of conductor portions 10 spaced apart by a certain distance by the end of the bolt for electricity transmission 310. The pair of conductors 10 may be fixed to the sleeve member 200 while the particles mp is filled, and may be energized by the compressed conductor particles mp and the energizing bolt 310.

12 to 15 show one embodiment of the connection process of the conductor connection structure 400 of the power cable according to the present invention. Descriptions duplicated with those described with reference to FIGS. 8 through 11 will be omitted.

In this case, in the embodiment illustrated in FIGS. 8 to 11, conductor particles (mp) are injected between the conductor portions 10, and the embodiment illustrated in FIGS. 12 to 15 are spaced apart between the conductor portions 10. Although there is a difference that the separation space is formed, the same is true that the bolts for energization 310 are fastened to contact the both conductor parts 10.

In the state in which the conductor connection structure 400 and the connection device of the power cable according to the present invention are respectively inserted into the openings at both ends of the sleeve member 200 after the conductor portions 10 of both cables to be connected are separated from each other, In the meantime, the conductor particles (mp) may be introduced or spaced spaces, which are artificial empty spaces, may be formed, and then electrically conductive bolts 10 may be electrically connected to each other by tightening the bolts 310.

Therefore, the width of the separation space is configured to be smaller than the diameter of the fastening portion of the bolt, specifically, the width of the fastening portion formed with the threaded thread of the current-carrying bolt 310, the power supply bolt 310 in the receiving space or space When fastened, the energizing bolt 310 is press-fitted between the end sides of both conductor parts 10 and fastened, and the energizing bolt 310 is in contact with the ends of both conductor parts 10 to be energized. In such a way, the energizing bolt 310 may serve as a direct conduction path of both conductor parts 10 by fastening.

 Of course, as shown in FIG. 15, each fixing bolt 330 is fastened to be electrically connected to the conductor part 10, and the fixing bolt 330 and the sleeve member 200 may also be energized. Therefore, the electrical connection through the sleeve member 200 and the fixing bolt 330 is also possible and contributes to diversification of the conduction path, but the energization by the fixing bolt 330 is performed through the sleeve member 200. In the case of the energizing bolt 310, since the fastening is directly coupled to each of the conductor parts 10, it is possible to secure an energization path without passing through the sleeve member 200, and thus plays a more important role in the entire energization path. Can be done.

The energizing bolt 310 enters the sleeve member 200 inward, and a pair of fastening portions of the energizing bolt 310 having a diameter larger than the distance between the conductor ends (the width of the space). May be in contact with the end (face) of the conductor 10. Therefore, the conduction bolt 310 and the conductor end may be in direct contact so that the conductor end (surface) may be connected through the conduction bolt 310 to provide a more direct conduction path.

And, as shown in Figure 15, the connection structure 400 of the power cable is completed, the head bolts of the fixing bolt 330 and the power supply bolt 310 of each of the broken bolt type is broken, so that the sleeve member ( 200) The connection can be completed so as not to protrude to the outside is the same as the embodiment with reference to FIG.

16 is a perspective view of the connection structure 400 of the power cable according to the present invention, the connection is completed, Figure 17 is a state in which the corona shield 500 is mounted on the connection structure 400 of the power cable according to the present invention. Illustrated.

Corona shield 500 is formed to surround the sleeve member 200, the conductor connecting portion formed by the sleeve member 200 and the like and the corona shield is energized with each other by a metal wire 600 or the like to form a corona discharge The occurrence of such an accident can be prevented.

As illustrated in FIG. 17, the connection structure 400 of the power cable on which the corona shield 500 is mounted may have a smooth surface without a step.

In the above-described method, when connecting the power cable 100, it is possible to greatly reduce the work time and cost, and to obtain the effect of minimizing the variation in the contact quality of the connection site due to the skill difference of the operator, Even when the length of the sleeve member 200 is sufficiently long, the sleeve member 200 may be divided to improve workability of the cable connection work.

Although the present specification has been described with reference to preferred embodiments of the invention, those skilled in the art may variously modify and change the invention without departing from the spirit and scope of the invention as set forth in the claims set forth below. Could be done. Therefore, it should be seen that all modifications included in the technical scope of the present invention are basically included in the scope of the claims of the present invention.

10: conductor part of power cable
30: insulation layer
200: sleeve member
200a: first sleeve
200b: second sleeve
310: electricity supply bolt
330 fixing bolt
400: connection structure of the power cable

Claims (18)

In the conductor connection structure of a power cable for connecting the conductor part which consists of several wire | wire of a power cable,
A conductor portion of a pair of cables;
It is divided into two pipe-shaped first sleeves and second sleeves in the longitudinal direction so as to be selectively fastened or separated, a pair of the conductor portion is inserted into the openings at both ends, and a plurality of fastening holes are provided A sleeve member in the form of a pipe;
A plurality of conductor particles introduced into a receiving space between ends of the pair of conductor portions inserted into the sleeve member to electrically connect the pair of conductor portions;
At least one electricity supply bolt fastened to a fastening hole of the sleeve member to pressurize the conductor particles introduced into the accommodation space to electrically connect the pair of conductor parts; And,
And a fixing bolt fastened to a fastening hole of the sleeve member to fix the conductor portion inserted into the sleeve member. In the conductor connection structure of a power cable for connecting the conductor part which consists of several wire | wire of a power cable,
A conductor portion of a pair of cables;
It is divided into two pipe-shaped first sleeves and second sleeves in the longitudinal direction so as to be selectively fastened or separated, a pair of the conductor portion is inserted into the openings at both ends, and a plurality of fastening holes are provided A sleeve member in the form of a pipe;
At least one electricity supply bolt fastened to a fastening hole between ends of the pair of conductor parts inserted into the sleeve member, and fastened to a fastening hole of the sleeve member to electrically connect the pair of conductor parts; And,
And a fixing bolt fastened to a fastening hole of the sleeve member to fix the conductor part inserted into the sleeve member. The method according to claim 1 or 2,
And a width between the ends of the pair of conductor portions inserted into the sleeve member is smaller than the width of the threaded fastening portion of the current-carrying bolt. The method according to claim 1 or 2,
And the first sleeve and the second sleeve constituting the sleeve member are made of tin plated copper or tin plated copper alloy. The method according to claim 1 or 2,
The fixing bolt and the electricity supply bolt is a conductor connection structure of the power cable, characterized in that the broken bolt made of brass or brass alloy material. The method according to claim 1 or 2,
In the center of the sleeve member in the state that the first sleeve and the second sleeve is fastened a plurality of power supply fastening holes for fastening the plurality of power supply bolts are formed at a predetermined interval along the circumferential direction of the power cable Conductor connection structure. The method of claim 6,
Conductor connection structure of a power cable, characterized in that formed in the region other than the center of the sleeve member in the state where the first sleeve and the second sleeve is fastened, a plurality of fastening holes for fastening the plurality of fastening bolts are spaced apart from each other. . The method according to claim 1 or 2,
The first and second sleeves constituting the sleeve member are each provided with a female fastening portion and a male fastening portion, each of which is threaded to be screwed, and a conductor connecting structure of the power cable. The method according to claim 1 or 2,
And the length of the sleeve member in a state where the first sleeve and the second sleeve are engaged is greater than the length of the exposed conductor portion of any one of the cables to be connected. In a power cable conductor connecting device for connecting a pair of conductor portions composed of a plurality of element wires of a power cable to each other,
It is divided into two pipe-shaped first sleeves and second sleeves in the longitudinal direction so as to be selectively fastened or separated, the conductor part is inserted into the openings at both ends, and the pipe-shaped with a plurality of fastening holes Sleeve member;
A plurality of conductor particles accommodated in a receiving space between the pair of conductor portions inserted into the sleeve member to electrically connect the pair of conductor portions;
At least one electricity supply bolt fastened to the fastening hole to electrically connect the conductor particles to the pair of conductor parts; And,
And at least one fixing bolt fastened to the fastening hole to fix the conductor part received in the sleeve member. In a power cable conductor connecting device for connecting a pair of conductor portions composed of a plurality of element wires of a power cable to each other,
It is divided into two pipe-shaped first sleeves and second sleeves in the longitudinal direction so as to be selectively fastened or separated, the conductor part is inserted into the openings at both ends, and the pipe-shaped with a plurality of fastening holes Sleeve member;
At least one energizing bolt fastened to a fastening hole between ends of the pair of conductor parts inserted into the sleeve member to electrically connect the pair of conductor parts; And,
And at least one fixing bolt fastened to the fastening hole to fix the conductor part received in the sleeve member. The method according to claim 10 or 11, wherein
And a width between the ends of the pair of conductor portions inserted into the sleeve member is smaller than the width of the threaded fastening portion of the current-carrying bolt. The method according to claim 10 or 11, wherein
And the sleeve member is made of tin plated copper or tin plated copper alloy. The method according to claim 10 or 11, wherein
The fixing bolt and the electricity supply bolt is a conductor connection device of the power cable, characterized in that the broken bolt of brass or brass alloy material. The method according to claim 10 or 11, wherein
The conductor connecting device of the power cable, characterized in that the plurality of power supply fastening holes to which the plurality of power supply bolts are fastened are formed at predetermined intervals along the circumferential direction at the center of the sleeve member. The method of claim 15,
The conductor connecting device of the power cable, characterized in that formed in the region other than the center of the sleeve member spaced apart a plurality of fastening holes for fastening the plurality of fastening bolts. The method according to claim 10 or 11, wherein
The first and second sleeves constituting the sleeve member are each provided with a female fastening portion having a screw thread and a male fastening portion for screwing, respectively. The method according to claim 10 or 11, wherein
And the length of the sleeve member in a state where the first sleeve and the second sleeve are engaged, is greater than the length of the exposed conductor portion of any one of the cables to be connected.

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