KR20190098608A - 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 which reduces a working time of a conductor connection work, minimizes a deviation of quality of the connection work, and minimizes a cost of the connection work of the power cable, and a power cable conductor connection device thereof. The conductor connection structure of a power cable comprises: a pair of conductor units of cables; a pipe-shaped sleeve member having a plurality of coupling holes; a plurality of conductor particles for electrically connecting the pair of conductor units; at least one current carrying bolt coupled to the coupling hole of the sleeve member; and a fixing bolt coupled to the coupling hole of the sleeve member.

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 provides a power cable conductor connecting device and a power cable conductor connecting structure of a power cable which can minimize the work time of the conductor connection work and minimize the deviation of the quality of the connection work, thereby minimizing the cost of the power cable connection work. It is about.

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 solves the problem of providing a conductor connecting structure and a power cable conductor connecting apparatus of a power cable, which can minimize the work time of the conductor connecting work and minimize the deviation of the quality of the connecting work, thereby minimizing the cost of the connecting work of the power cable. Let's do the task.

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; A sleeve member in the form of a pipe, the conductor portion being inserted into openings at both ends and having a plurality of fastening holes; 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 a fixing bolt fastened to the fastening hole of the sleeve member so as to fix the conductor part inserted into the sleeve member, wherein the current-carrying bolt and the fixing bolt are fastened to the fastening hole of the sleeve member. It is possible to provide a conductor connection structure of the power cable characterized in that the shape of the different from each other.

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; A pair of sleeve members inserted into the openings at both ends of the pair of conductor parts so as to be spaced apart from each other to form spaced apart spaces, and having a plurality of fastening holes; At least one current-carrying bolt fastened to a fastening hole of the sleeve member to electrically connect the pair of conductor parts inserted into the sleeve member; And a fixing bolt fastened to a fastening hole of the sleeve member to fix the conductor part inserted into the sleeve member, wherein the current-carrying bolt and the fixing bolt are fastened to the fastening hole of the sleeve member. It is possible to provide a conductor connection structure of the power cable characterized in that the shape of the different from each other.

In this case, the energizing bolt and the fixing bolt are provided in the head portion, the lower portion of the head portion and the diameter is reduced, the neck portion that can be broken at the lower end when the torque is applied to the head portion, the flange provided in the lower neck portion and the And a fastening part provided under the flange and fastened to the sleeve member by forming a screw thread, and the flanges of the energizing bolt and the fixing bolt may be different from each other.

In addition, the head portion of the bolt for fixing and the fixing bolt has a hexagonal cross-sectional shape, any one of the flange of the bolt for fixing and the fixing bolt has a hexagonal cross-sectional shape, the other may have a circular cross-section. .

Here, the width of the accommodation space or the separation space may be smaller than the width of the fastening portion in which the screw thread of the electrical service bolt is formed.

In addition, the sleeve member may be made of tin plated copper or tin plated copper alloy.

In this case, the fixing bolt and the energizing bolt may be made of brass or brass alloy.

In this case, 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 addition, 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, in order to solve the above problems, the present invention is a power cable conductor connection device for connecting a pair of conductors consisting of a plurality of element wires of the power cable to each other, the open pipe form in which the conductor portion of the power cable is inserted at both ends Consists of a sleeve member of the pipe shape having 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 a fixing bolt fastened to the fastening hole of the sleeve member so as to fix the conductor part inserted into the sleeve member, wherein the current-carrying bolt and the fixing bolt are fastened to the fastening hole of the sleeve member. It is possible to provide a conductor connecting device for a power cable characterized by different shapes.

Moreover, in order to solve the said subject, this invention is a power cable conductor connection apparatus for connecting a pair of conductor parts comprised from the several wire | wire of a power cable with each other, Comprising: The said pair of conductor parts is inserted into the opening part of both ends, An end portion of the pair of conductor parts spaced apart from each other to form a separation space, the sleeve member having a pipe shape having a plurality of fastening holes; At least one electricity supply bolt fastened to the fastening hole to electrically connect the pair of conductor parts; And a fixing bolt fastened to the fastening hole of the sleeve member so as to fix the conductor part inserted into the sleeve member, wherein the current-carrying bolt and the fixing bolt are fastened to the fastening hole of the sleeve member. It is possible to provide a conductor connecting device of a power cable, characterized in that the shape of the different.

In this case, the energizing bolt and the fixing bolt are provided in the head portion, the lower portion of the head portion and the diameter is reduced, the neck portion that can be broken at the lower end when the torque is applied to the head portion, the flange provided in the lower neck portion and the And a fastening part provided under the flange and fastened to the sleeve member by forming a screw thread, and the flanges of the energizing bolt and the fixing bolt may be different from each other.

In addition, the head portion of the bolt for fixing and the fixing bolt has a hexagonal cross-sectional shape, any one of the flange of the bolt for fixing and the fixing bolt has a hexagonal cross-sectional shape, the other may have a circular cross-section. .

The width of the accommodation space or the separation space 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.

In addition, the fixing bolt and the energizing bolt may be made of brass or brass alloy material.

In this case, 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 addition, 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, in order to solve the above problems, the present invention is a polygonal cross-sectional head portion to which torque is applied by a tool; A neck portion provided below the head portion, the diameter of which is reduced in diameter downward; A flange provided at a lower end of the neck and having the same cross-sectional shape or a circular cross-sectional shape as the head; And a fastening part provided at a lower portion of the flange and having a thread formed therein, wherein a lower end of the neck part is broken when a breaking torque of a predetermined size or more is applied to the head part, and the flange determines the shape of the breaking surface. It is possible to provide a fastening bolt rule characterized in that.

In addition, the fastening bolt may be made of brass or a brass alloy material.

According to the conductor connecting structure of the power cable according to the present invention, the working time of the connecting 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 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 it does not require the skill of the work.

Further, according to the conductor connecting 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 voids inside the conductor particles introduced using the energizing bolts as fastening means are reduced. In order to electrically connect the cut surfaces of both conductor parts, the scattering of the conductive material generated in the process of stripping the insulation of the wire may not occur, and thus stability may be improved in quality.

In addition, according to the conductor connection structure of the power cable according to the present invention, the power supply connection structure or connection work is configured to be identified from the outside in the state that the fastening bolt and the fixing bolt is configured in the form of broken bolts is completed If a problem occurs, it is possible to easily identify the position of the bolt through the shape of the fracture surface of the bolt.

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.
2 and 3 show a partially cutaway perspective view of the conductor connection structure of the power cable according to the invention.
Fig. 4 shows a perspective view of the sleeve member constituting the conductor connecting structure of the power cable according to the present invention.
Fig. 5 shows a cross-sectional view of the sleeve member constituting the conductor connecting structure of the power cable according to the present invention.
6 shows an example of a side view of the fixing bolt and the electricity supply bolt constituting the conductor connection structure of the power cable according to the present invention.
7 and 8 show examples of cross-sectional views of conductor connecting structures of power cables according to the present invention.
FIG. 9 shows a plan view of the conductor connection structure of the power cable according to the invention shown in FIGS. 7 and 8.
Fig. 10 shows a perspective view of the connection structure of the power cable according to the present invention with the connection completed.
11 illustrates 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 shows a cross-sectional view of a power cable connectable by a conductor connection structure of a power cable according to the invention, and FIGS. 2 and 3 are partially cutaway perspective views of one embodiment of the conductor connection structure of the power cable according to the invention. Shows.

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 of the power cables must be preceded.

Conventionally, although the insulation layer of each wire constituting the conductor portion of the power cable is removed and assembled again, the conductor portions of both power cables to be connected are brought into contact with each other, and a crimping method is used. The method of connecting the conductor parts of both cables by removing the insulating layer and reassembling it by crimping method has a long working time, has a potential quality risk due to scattering of conductive material during stripping of the insulating layer, and requires considerable working skill. In order to solve the problem, the present invention provides a conductor connection structure of the power cable shown in Figs.

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.

In the related art, when the wire insulated power cable 100 is connected, the insulation of the wire is removed and the conductor portion 10 of both cables is used as a crimping method. Insert the conductor portion 10 of the cable connected in the) and form an insertion space in the center thereof to inject the conductor particles, or to form a spaced empty space and tighten the conductive bolt 310 to electrically connect the conductor portions of both cables Can be accessed. 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.

The outer shell 60 provided at the outermost portion of the cable may be made of any one of polyethylene, polyvinyl chloride, and polyurethane.

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

Specifically, FIG. 2 is a conductor connecting structure of a power cable for connecting a conductor part composed of a plurality of element wires of a power cable, wherein the conductor part 10 and the conductor part 10 of the pair of cables are openings at both ends, respectively. A sleeve member 200 inserted into the pipe member and having a plurality of fastening holes; A plurality of conductor particles (mp) introduced into the receiving space between the ends of the pair of conductor portions 10 inserted into the sleeve member 200 to electrically connect the pair of conductor portions; At least one current-carrying bolt 310 fastened to the fastening hole of the sleeve member to press the conductor particles (mp) introduced into the accommodation space and electrically connect the pair of conductor parts, and the sleeve member 200. It may include a fixing bolt 330 is fastened to the fastening hole of the sleeve member 200 in order to fix the conductor portion 10 inserted into the, as will be described later, the electricity supply bolt 310 and the Fixing bolt 330 shows a partially cut perspective view of the conductor connection structure 400 of the power cable, characterized in that the shape of the fastening hole of the sleeve member 200 is different from each other.

In addition, the conductor connection structure 400 of the power cable according to the present invention shown in FIG. 3 is formed in a state in which the conductor particles are not inserted between the conductor portions, and the receiving space is emptied into the separation space S. It is possible to provide a conductor connection structure of a power cable connected through a dedicated bolt 310.

2 and 3 show one embodiment of a conductor connection structure of a power cable according to the present invention, which includes a conductor part in its configuration, but the present invention provides a sleeve member 200 for connecting conductor parts of various cables. ), An electricity supply bolt 310, and a fixing bolt 330, are inserted between the conductor parts 10 spaced apart from the inside of the sleeve member 200 as necessary, and compressed by the electricity supply bolt 310. It can be understood to provide a conductor connecting device for a power cable comprising conductor particles (mp) that electrically connect both conductor portions 10 with reduced voids. Each structure is demonstrated in detail.

The sleeve member 200 is open at both ends and is a metal member having excellent electrical conductivity in the form of a pipe having a plurality of fastening holes. For example, the sleeve member 200 may be made of tin-plated copper or tin-plated copper alloy material.

In addition, the sleeve member 200 may be provided with a fastening hole for fastening the plurality of bolts. Specifically, the sleeve member includes a plurality of fastening holes formed at predetermined intervals along the circumferential direction and a fastening hole for energization formed at predetermined intervals along the circumferential direction between the plurality of fastening holes.

The electric power cable connection structure 400 according to the present invention secures an electric conduction path through the conductor particles mp or the electric conduction bolt 310 without directly conducting electricity by contacting the conductor portion of the cable to be connected.

The embodiment shown in Figure 2 forms a receiving space between the conductor portion of the cable to be connected, a plurality of conductor particles (mp) in the receiving space by the method of pressurizing with a bolt for energization of the conductive particles in the receiving space By minimizing the voids and increasing the internal pressure, the ends of both conductor parts 10 may be electrically connected to each other via compressed conductor particles. The embodiment shown in FIG. 10) can be electrically connected.

4 is a perspective view of a sleeve member 200 constituting the conductor connection structure of the power cable according to the present invention, Figure 5 is a cross-sectional view of the sleeve member 200 constituting the conductor connection structure of the power cable according to the present invention. Shows.

Of the plurality of fastening holes formed in the sleeve member 200 illustrated in FIG. 4, the fastening holes formed at the center of the sleeve member 200 are inserted or spaced spaces formed between the ends of the conductor portion 10 of the cable to be connected. Is fastened to, the energizing fastening hole 210 for fastening the input conductive particles or for the fastening bolt 310 for electrically connecting the ends of both conductor parts 10.

And, as shown in Figure 4, of the plurality of fastening holes formed in the sleeve member 200, the fastening holes formed in the center of the sleeve member 200, the fixing bolt in the state in which the conductor portion 10 of the cable to be connected is inserted A fastening hole 230 for fastening the 330 to fix the conductor part 10 and the sleeve member 200.

When the fixing bolt 330 is fastened to the fixing fastening hole 230, the conductor part 10 may be plastically deformed or penetrated so that the movement of the conductor part 10 in the longitudinal direction of the sleeve member 200 is performed. Can be blocked.

An electrical fastening hole 210 to which the electrical bolt 310 shown in FIG. 4 is fastened may be formed at a position corresponding to an insertion space or a space between conductor ends of the center portion of the sleeve member 200. . Accordingly, the plurality of fastening holes 210 may be formed at predetermined intervals along the circumference of the central portion of the sleeve member 200.

In addition, each fixing fastening hole 230 is also located in a region other than the center of the sleeve member 200 in a lengthwise direction of the sleeve member 200, for example, along a length direction of the sleeve member 200. It may be formed at a predetermined interval or angle along the circumference of each position at a position of a certain interval, as shown in Figures 4 and 5, adjacent fastening holes are to be staggered in the longitudinal direction of the sleeve member 200 Can be.

As shown in FIG. 5, each bolt fastening hole is formed with a screw thread to allow adjustment of a fastening force according to a fastening depth of the power supply bolt 310 and the fixing bolt 330.

The reason for configuring the electricity supply bolt 310 and the fixing bolt 330 as a break bolt is as described later, the connection structure 400 of the power cable according to the present invention should be accommodated in the junction box, the connection Corona shield or the like should be mounted on the outside of the structure, and the reason is that it is difficult for the bolt head or the like to protrude to the surface of the sleeve member 200 constituting the power cable 100 for reasons such as electric field concentration prevention.

The electricity supply bolt 310 and the fixing bolt 330 may be made of brass.

6 shows an example of a side view of the fixing bolt and the electricity supply bolt constituting the conductor connection structure of the power cable according to the present invention.

The electricity supply bolt 310 and the fixing bolt 330 are provided under the head portions 311 and 331 and the head portions 311 and 331, respectively, and have a reduced diameter so that the head portions 311 and 331 Neck parts 313 and 333 capable of breaking at the lower end when torque is applied, flanges 315 and 335 provided under the neck part and fastenings provided under the flanges 315 and 335 and formed with threads to be fastened to the sleeve member. The parts 319 and 339 may be provided, and shapes of the flanges 315 and 335 of the electricity supply bolt and the fixing bolt may be different from each other.

The head parts 311 and 331 are broken and separated when the fastening is completed, and the fastening parts 319 and 339 are configured to enter and be fastened into the sleeve member when the fastening is completed.

Therefore, when a torque of a predetermined magnitude or more is applied to the head parts 311 and 331, a fracture occurs between the lower end of the neck part provided below the head parts 311 and 331 and the top surface of the flange to form a fracture surface. .

Therefore, the fracture surface (bs) is formed by fracture occurs during the main fastening process of each bolt, the shape of the fracture surface (bs) is eventually provided with flanges 315, 335 provided under the neck portion (311, 331) ) Shape.

The head bolts 311 and 331 of the bolt for electricity delivery 310 and the fixing bolt 330 of the present invention has a hexagonal cross-sectional shape, the flange of the bolt for electricity delivery 310 and the fixing bolt 330 One of 315 and 335 may have a hexagonal cross-sectional shape, the other may have a circular cross section, and in the embodiment shown in FIG. 6, the flange 315 of the energizing bolt has a circular cross section. Although the flange 315 of the fixing bolt 310 is shown as having a hexagonal cross section, the shapes of the fixing bolt 330 and the electricity supply bolt 310 may be changed.

Since each of the electricity supply bolt 310 and the fixing bolt 330 is configured by machining a hexagonal bar made of brass by lathe work, respectively, the neck parts 313 and 333 and the fastening parts 319 and 339, etc. Silver processing is essential, but it is not necessary to process the outer circumferential surfaces of the heads 311 and 331.

In addition, in the case of the flange is configured in a hexagonal cross-sectional shape does not require a separate side processing of the flange, in the case of a circular cross-sectional shape, a separate lathe processing is required. Therefore, in the present invention, since a larger number of fixing bolts are used among the bolts used in one connection structure or a connecting device, the flanges of the fixing bolts have a hexagonal cross-sectional shape, that is, a shape that does not require side processing of the flanges. It is advantageous to construct a circular shape of the flange of the relatively small number of bolts for current transmission.

In addition, when the shape of the flange is dualized, the shape of the flange is not limited to a circle or a hexagon, and the shape may be freely processed if identification of each bolt is possible.

Here, the fastening portion 319 of the bolt for energization 310 is configured to press the conductor particles in the sleeve member 200 or to electrically connect the pair of conductor parts, the insertion space of the conductor particles or When the width of the separation space is configured to be smaller than the width of the fastening portion formed with the thread of the bolts for the electricity delivery 310 by the maximum diameter of the fastening portion 319 of the electricity delivery bolt 310, the insertion space or the separation space When the energizing bolt 310 is fastened to, the energizing bolt 310 is press-fitted between the end side surfaces of both conductor parts, and the energizing bolt 310 is fastened at the same time as the ends of both conductor parts 10. It can be used as an independent conduction path by contacting the conductor to contact the conductor.

7 and 8 show examples of cross-sectional views of conductor connecting structures of power cables according to the present invention.

When the fastening of each bolt is completed, the assembly of the connection structure may be completed so that the head portion of each bolt is broken so that there is no portion protruding outside the sleeve member 200.

In this case, the embodiment shown in Figure 7 is a conductive particle is injected between the conductor portion, the embodiment shown in Figure 8 has the difference that the spaced apart space (S) is formed by being spaced apart between the conductor portion 10, The same is true that the energizing bolt 310 is fastened to contact both conductor parts.

The conductor connecting structure and the connecting device of the power cable according to the present invention are respectively inserted into the openings at both ends of the sleeve member 200 to be connected to each other after the conductor portion 100 of both cables to be connected, while being spaced apart from each other, After inserting the conductor particles (mp) or forming a space (S), which is an artificial empty space, the conductors 10 may be electrically connected by fastening the bolts 310 for electricity.

Therefore, the width of the separation space (S) is configured to be smaller than the diameter of the fastening portion of the bolt, specifically, the width of the fastening portion 319, the threaded portion of the bolt for electricity transmission 310, the receiving space or the space When the energizing bolt 310 is fastened, the energizing bolt 310 is press-fitted between the end side surfaces of both conductor parts, and the energizing bolt 310 is in contact with the ends of both conductor parts 10 simultaneously with the fastening. In order to be energized, the energizing bolt 310 may serve as a direct conduction path of both conductor parts by fastening as described above.

FIG. 9 shows a plan view of the conductor connection structure of the power cable according to the invention shown in FIGS. 7 and 8.

As shown in FIG. 9, the fracture surface (bs) of each bolt is in accordance with the shape of each sleeve in a state in which the bolt for energization 310 and the fixing bolt 330 are fastened to the sleeve member 200. It can be identified as a hexagon or a circle. According to the shape of the flange, that is, the shape of the fracture surface, it is possible to easily distinguish whether the bolt is an electricity supply bolt 310 or a fixing bolt 330.

Therefore, if the conductor connection structure of the power cable is damaged or broken, or if a problem occurs in the power cable connection work, whether a problem occurs inside the sleeve member in the fixed area B or the energizing area A. The effect can be easily identified.

Figure 10 shows a perspective view of the connection structure of the power cable according to the present invention the connection is completed, Figure 11 shows a state in which the corona shield is mounted on the connection structure of the power cable according to the present invention.

The corona shield 500 is formed to surround the sleeve member 200, and the conductor connecting portion formed by the sleeve member or the like and the corona shield are energized with each other by the metal wire 600 to form an equipotential, such as corona discharge. You can prevent accidents.

As shown in FIG. 11, the connection structure 400 of the power cable equipped with the corona shield may have a smooth surface without a step or the like.

In the above-described method, when the power cable 100 is connected, the work time and the cost can be greatly shortened, and an effect of minimizing the variation in the contact quality due to the skill difference of the operator can be obtained.

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.

100: power cable
200: sleeve member
310: electricity supply bolt
330 fixing bolt

Claims (20)

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;
A sleeve member in the form of a pipe, the conductor portion being inserted into openings at both ends and having a plurality of fastening holes;
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.
The electrical connection bolt and the fixing bolt are conductor connection structure of the power cable, characterized in that the shape of the state is fastened to the fastening hole of the sleeve member is different. 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;
A pair of sleeve members inserted into the openings at both ends of the pair of conductor parts so as to be spaced apart from each other to form spaced apart spaces, and having a plurality of fastening holes;
At least one current-carrying bolt fastened to a fastening hole of the sleeve member to electrically connect the pair of conductor parts inserted into the sleeve member; And,
And a fixing bolt fastened to the fastening hole of the sleeve member to fix the conductor portion inserted into the sleeve member.
The electrical connection bolt and the fixing bolt are conductor connection structure of the power cable, characterized in that the shape of the state is fastened to the fastening hole of the sleeve member is different. The method according to claim 1 or 2,
The energizing bolt and the fixing bolt are provided in a head part and a lower part of the head part, and a diameter thereof is reduced, so that a neck part that can be broken at the lower end when torque is applied to the head part, a flange provided in the lower part of the neck part, and a lower part of the flange part. And a fastening portion provided with a screw thread and fastened to the sleeve member.
And a flange of the power supply bolt and the fixing bolt are different in shape from each other. The method of claim 3,
The head portion of the energizing bolt and the fixing bolt has a hexagonal cross-sectional shape, any one of the flange of the electricity supply bolt and the fixing bolt has a hexagonal cross-sectional shape, the other has a circular cross section Conductor connection structure of power cable. The method of claim 3,
The width of the receiving space or the separation space is a conductor connection structure of the power cable, characterized in that less than the width of the fastening portion in which the threaded portion of the electrical service bolt is formed. The method according to claim 1 or 2,
And the sleeve member is 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 are conductor connection structure of the power cable, characterized in that the brass or brass alloy material. The method according to claim 1 or 2,
And a plurality of power supply fastening holes for fastening the plurality of power supply bolts are formed at predetermined intervals along the circumferential direction at a central portion of the sleeve member. The method of claim 8,
And a plurality of fastening holes for fastening the plurality of fastening bolts to be spaced apart from the central portion of 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,
A pipe member formed in an open pipe shape at which both ends of the power cable are inserted, the pipe member having 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
And a fixing bolt fastened to a fastening hole of the sleeve member to fix the conductor portion inserted into the sleeve member.
The electrical connection bolt and the fixing bolt is a conductor connecting device of the power cable, characterized in that the shape of the state fastened to the fastening hole of the sleeve member is different. 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,
A pair of conductors inserted into the openings at both ends thereof to accommodate the pair of conductors spaced apart from each other to form spaced apart spaces, and having a plurality of fastening holes;
At least one electricity supply bolt fastened to the fastening hole 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.
The electrical connection bolt and the fixing bolt is a conductor connecting device of the power cable, characterized in that the shape of the state fastened to the fastening hole of the sleeve member is different. The method according to claim 10 or 11, wherein
The energizing bolt and the fixing bolt are provided in the head part and the lower part of the head part, and the diameter thereof is reduced, so that the neck part can be broken at the lower end when torque is applied to the head part, the flange provided in the lower part of the neck and the lower part of the flange. And a fastening portion provided with a screw thread and fastened to the sleeve member.
A conductor connecting device of a power cable, characterized in that the flanges of the energizing bolt and the fixing bolt are different from each other. The method of claim 12,
The head portion of the energizing bolt and the fixing bolt has a hexagonal cross-sectional shape, any one of the flange of the electricity supply bolt and the fixing bolt has a hexagonal cross-sectional shape, the other has a circular cross section Conductor connection of power cable. The method according to claim 10 or 11, wherein
The width of the receiving space or the separation space is a conductor connecting device of the power cable, characterized in that less than the width of the fastening portion formed with the thread of the bolt for the electricity. 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 connecting device of the power cable, characterized in that the 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 17,
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. A head having a polygonal cross-sectional shape to which torque is applied by a tool;
A neck portion provided below the head portion, the diameter of which is reduced in diameter downward;
A flange provided at a lower end of the neck and having the same cross-sectional shape or a circular cross-sectional shape as the head; And,
Includes a fastening portion provided on the lower flange and the thread is formed,
Fastening bolt, characterized in that the lower end of the neck portion is broken when applying a breaking torque of more than a predetermined size to the head portion, the flange determines the shape of the fracture surface. The method of claim 19,
The fastening bolt is a fastening bolt, characterized in that the brass or brass alloy material.

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