KR100866027B1 - Pipe-shapped cross type sleeve of a mesh type grounding electrode for joining bare copper wires - Google Patents

Abstract

A pipe-shaped cross type sleeve is provided to insert a bare copper wire of vertical direction meeting with the cylindrical inserting pipe at right angle into the cylindrical inserting pipe of the sleeve and set up a mesh type electrode through the simple task compressing both ends, thereby drastically increasing the work efficiency of installation. The first bare copper wire(3) can be inserted into the first inserting pipe(13). The second inserting pipe(15) meets with the first inserting pipe at right angle. Therefore, the second bare copper wire(5) meeting with the first bare copper wire at right angle can be inserted. The connection part(21) is formed between the first inserting pipe and the second inserting pipe integrally. And the connection part directly connects the first inserting pipe and the second inserting pipe. Respective both ends of the first and second inserting pipes are compressed in the circumference of the first and second bare copper wires. Therefore, the first and second inserting pipes are fixed integrally not to move relatively about the first and second bare copper wires by respectively forming the shaft covering parts(27,29).

Description

Pipe-shapped cross type sleeve of a mesh type grounding electrode for joining bare copper wires}

The present invention relates to a cross sleeve for a reticulated electrode, and more particularly, in embedding a reticulated ground electrode made of a plurality of bare copper wires arranged in a lattice shape in the ground, inserted into a portion where a plurality of vertically arranged spiral wires cross each other. The present invention relates to a tubular cross sleeve for splicing spiral wires of a reticulated electrode that allows splicing of intersecting bare wires by a simple operation of clamping the end portion.

In general, grounding means connecting various electrical devices to the earth to maintain the same potential as the earth so that the earth can be used as part of an electric circuit. It can be divided into prevention ground, ground detection ground, equipotential ground, noise prevention ground, and functional ground.

Among them, the system ground is to prevent the damage caused by the contact between the primary side and the secondary side by connecting the secondary side of the transformer with the earth in the low voltage distribution system, and the machine ground is external to the case such as the case of an electrical device made of a conductor. To reduce the risk of electric shock due to mixing when a short circuit occurs in the body. In addition, the lightning prevention ground is for discharging the lightning current caused by a direct lightning strike, that is, a lightning strike or an induced lightning induced by a high-voltage power line through the ground, and is further divided into a ground for a line, a ground for a building, and a ground for a surge suppressor. can see.

Here, the grounding of the track and the building is to be lightning-fastened by the lightning arrester or lightning rod installed in the track or building, and to discharge the ground to the ground quickly, and the grounding of the surge suppressor is induced to the power line or the communication line. It refers to the discharge of the surge on the earth. At this time, the surge suppressor is a device that operates when the voltage applied between the terminal and the earth or the terminal and the terminal becomes higher than a certain level, thereby lowering the voltage.

In this way, the system ground, equipment ground, or earthquake-proof ground is discharged from the ground by discharging the high voltage applied to the electric device, the track, or the building due to a short circuit or thunderbolt. To prevent failure or accident, it consists of three parts: connection part connected to electric device or line or protrusion exposed to the air, down wire connected to this protrusion, and ground electrode embedded in the ground.

Among them, the ground electrode can be divided into electrodes that are separately embedded such as rod electrodes, linear electrodes, plate electrodes, and reticulated electrodes, and electrodes using existing underground structures such as concrete steel or water pipes. When discharge is not effectively performed, the discharge rate is delayed, and thus, shortens its lifespan or insufficient protection for buildings. In addition, since the plate-like electrode has a wide embedding range, the cost of manufacturing an electrode such as a copper plate is greatly increased. On the other hand, the proposed electrode to overcome these disadvantages is to connect the strands of several strands in the shape of a net, can significantly reduce the installation cost while securing a wide buried range, and cross the strands of several strands crossing each other It is adapted to join by sleeve pressing or welding at the point.

As described above, various methods exist for joining intersecting bare copper wires to install the reticulated electrode, and as an example thereof, a thermal welding method shown in FIG. 1 may be used. According to this welding method, the graphite mold 111 surrounding the intersection point of the two strands 103 and 105 crossing as shown in the drawing, and the welding material 115 sequentially filled in the container 113 on the graphite mold 111 are shown. And using the welding hole 110 made of the ignition material 117 to join the intersection of the two copper wires (103, 105), at this time the metal foil 121 is laid on the connection hole 119 in the center of the container 113 The contents filled in the container 113 does not flow through the induction pipe 123.

Therefore, when the ignition material 117 of the welding tool 110 is lit, the welding material 115 becomes molten metal and slag by spontaneous reaction, and the molten metal melts the metal foil 121 again and the induction pipe 123 is opened. It flows through the intersection of the two bare wires (103, 105) to weld the bare wires (103, 105) to each other.

By the way, this welding method can be easily welded according to the shape of the cross-coated copper wire, and the connection is good, but the deformation performance of the copper copper wire due to the high heat of the melt during welding, the discharge performance is lowered, the molten metal or slag outside There is a problem that is caused by the soil pollution.

Meanwhile, a crimping method using a sleeve has been developed as another method of joining bare copper wires, which may be further subdivided according to the shape of the sleeve used, as an example of which is illustrated in FIGS. 2 and 3. C type sleeve 211 is mentioned. This sleeve 211 is bent in a C-shaped cross section, as shown. Therefore, when joining the bare copper wires by the C-shaped sleeve 211, first, a longitudinal spiral copper wire 205 bent at a right angle on the plurality of horizontal spiral wires 203 arranged side by side, and then the intersection points of both bare wires 203 and 205. In order to fix the sleeve 211 in turn, a plurality of bare wires (203, 205) can be arranged to form a network electrode regularly arranged.

However, since the reticulated electrode 201 employing the C-shaped sleeve 211 should be bent at right angles twice at the intersection of the longitudinal spiral wire 205 before crossing into the sleeve 211, the amount of work and the working time are increased. Since the total length of the longitudinal spiral wire 205 is greatly increased and the total length of the vertical spiral wire 205 is reduced by the length bent at right angles, the amount of use of the bare wire increases accordingly, thus greatly reducing the work efficiency due to the installation of the reticulated electrode 201 and increasing the cost of construction. There is a problem.

In addition, since most of the bare wires 203 and 205 are manufactured by twisting a plurality of thin fibrous wires as shown in FIG. 3, when the two bent wires are bent at a right angle twice as above, the fibrous wires of the bent portion are separated from each other and separated. Therefore, there was also a problem that the discharge efficiency of the network electrode 201 is lowered as a result.

Another example of a crimp sleeve used to join the bare wires of the mesh electrode is shown in FIG. 4.

The sleeve 311 is generally cross-shaped as shown, and arranged vertically with a short interval between the longitudinal spiral line 305 cut short between a plurality of transverse spiral lines 303 arranged side by side, The plurality of bare copper wires 303 and 305 are joined in a lattice form by biting and fixing a portion of the horizontal bare copper wire 303 in which the longitudinal bare copper wire 305 is adjacent up and down.

Accordingly, the reticulated electrode 301 bonded by the cross sleeve 311 has two horizontal spiral wires 305 vertically therebetween with the horizontal spiral wires 303 therebetween as shown in FIG. 4. After a simple arrangement operation arranged so as to face each other at a right angle with respect to the cross, the cross sleeve 311 is easily inserted and pressed, thereby reducing installation time and time. It is possible to improve the work efficiency, and because the overlap of bare copper wires 303 and 305 does not occur, it is possible to prevent waste of bare copper wire.

However, this cross-shaped sleeve 311, as can be seen in Figure 4, the transverse spiral line 303 and the longitudinal spiral line 305, and the vertical longitudinal spiral line 305 are joined to each other in a state that is energized, so There is a problem that the overall discharge efficiency of the reticulated electrode 301 is greatly reduced because the current flows from the directional spiral line 303 to the longitudinal spiral line 305 or the vertical longitudinal spiral line 305 does not flow directly.

Another example of a sleeve used for the mesh electrode is shown in FIG. 5.

The sleeve 411 has a cross shape similar to the sleeve 311, as shown, to allow the reticulated electrode 401 to be installed in a lattice shape like the reticulated electrode 301, but horizontally above the vertical portion 415. Since the portion 413 is mounted, the longitudinal bare copper wire 405 as well as the horizontal bare copper wire 403 can be used without being cut. Therefore, the installation time and man-hour of the reticulated electrode 401 can be shortened, and since the longitudinal spiral copper wire 405 is not disconnected at the boundary of the horizontal spiral copper wire 403, the discharge efficiency of the reticulated electrode 401 can be increased accordingly. do.

However, the three-dimensional cross-shaped sleeve 411 has four portions at both ends of the horizontal portion 413 and the vertical portion 415 to be fixed on the bare wires 403 and 405 in the shape of the horizontal portion 413 of FIG. 5. Work has to be bothersome, and work time is long because it has to be all in shape.

In addition, when the thickness of the bare copper wire 403 is thicker than the U-shaped groove 417, it is difficult to fit. Accordingly, when the size of the U-shaped groove 417 is sufficiently enlarged, both walls 419 of the groove 417 are provided. When the groove wall 419 is bent as shown in the vertical portion 415 of FIG. 5 when the groove wall 419 is bent relative to this bare wire 403, one wall 419, or both walls not shown, are shown. (419) There was also a problem of lowering the discharge efficiency of the reticular electrode 401 by lifting up all.
Furthermore, since the intersection of the horizontal portion 413 and the vertical portion 415 is cut off, since the bare wires 403 and 405 are in direct contact, the contacting portions of the bare wires 403 and 405 are easily aged due to sparks generated during the lightning strike. There was a problem.

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The present invention has been proposed to solve the problems of the various methods used to join the bare wires of the mesh electrode as described above, fixing the vertical orthogonal spiral wire in the longitudinal and transverse spiral wires of the mesh electrode It is an object of the present invention to provide a tubular sleeve that facilitates the joining operation of the bare copper wire by the simple operation of inserting the bare copper wire and pressurizing it in the radial direction by making the shape of the joint portion into a short tubular shape.

The present invention to achieve the above object, the first insertion tube is to be fitted with a first screw wire; A second insertion tube orthogonal to the first insertion tube so as to sandwich a second spiral line orthogonal to the first bare wire; And a connecting portion integrally formed between the first insertion tube and the second insertion tube to directly connect the first insertion tube and the second insertion tube, wherein each of the first and second insertion tubes Both ends are crimped around the first and second spiral wires to form shaft diameters, respectively, to provide a tubular cross sleeve for splicing wire meshes of the mesh electrodes fixed integrally so as not to move relative to the first and second bare wires.

Therefore, according to the tubular cross sleeve for joining the bare wires of the mesh electrode of the present invention, transverse bare wires and longitudinal bare wires are inserted into the first insertion pipe and the second insertion pipe, respectively, and both ends of the first insertion pipe and the second insertion pipe, respectively. It is possible to fix the vertical and horizontal copper wires crossing each other by a sleeve only by a simple operation of pressing the wires on each bare wire, which greatly simplifies the installation work of the reticulated electrode, thus reducing the working time and man-hours, thus improving the efficiency of installation work. Can be greatly improved.

In addition, since the cylindrical insertion tube is crimped and joined while surrounding the bare copper wire, no lifting occurs between the inserted pipe and the bare copper wire, and the close contact can be made reliably, thereby maximizing the discharge efficiency.

Finally, since the longitudinal and horizontal copper wires do not make direct contact with each other, sparks do not occur between the longitudinal and horizontal copper wires during a lightning strike, thereby preventing damage, deterioration, or degeneration of the bare wires due to sparks, and a decrease in discharge efficiency.

Hereinafter, a tubular cross sleeve for joining a bare wire of a mesh electrode according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 7 and FIG. 8, the tubular cross sleeve according to the present invention is made of copper such that a plurality of orthogonal first bare copper wires 3 and second bare copper wires 5 are joined at an intersection point. As a metal bundle of good conductors, the first insertion tube 13 arranged in the horizontal direction, the second insertion tube 15 arranged in the longitudinal direction, and the first insertion tube 13 and the second insertion tube 15 are connected. It consists of a connecting portion (21).

Here, the first insertion tube 13 is a transverse insertion tube, as shown in FIGS. 7 and 8, and has a short tubular shape, and has a first spiral line 3, that is, a first for fitting a horizontal spiral line. The insertion hole 23, ie, the transverse direction insertion hole, is formed in the longitudinal direction.

In addition, the second insertion tube 15 is a longitudinal insertion tube, which is similarly short in tubular shape and is arranged in a direction perpendicular to the first insertion tube 13, as shown in FIGS. 7 and 8. A second insertion hole 25, i.e., a longitudinal insertion hole, for fitting the second bare copper wire 5, that is, a longitudinal bare copper wire, is formed in the longitudinal direction.

In addition, as shown in FIGS. 7 and 8, the connecting portion 21 between the first insertion tube 13 and the second insertion tube 15 has an upper end at the lower center of the outer peripheral surface of the first insertion tube 13. It is attached integrally by welding or the like, and the lower end portion is shortly extended downward and is integrally attached to the upper end center of the outer peripheral surface of the second insertion tube 15 perpendicular to the first insertion tube 13 by welding or the like. In this case, although the shape of the connecting portion 21 is a square pillar shape in Figures 7 and 8, in addition to that can be manufactured in various forms, sizes and numbers.

Now, the operation of the tubular cross sleeve 11 for the spiral wire bonding of the mesh electrode according to the preferred embodiment of the present invention configured as described above are as follows.

As shown in Fig. 9, in order to join the longitudinal and horizontal copper wires 3 and 5 of the reticulated electrode 1 by the tubular cross sleeve 11 of the present invention, first, as many as the number of longitudinal directions necessary for the underground burial point is required. 2 Arrange the bare copper wires 5 side by side in the lateral direction. Then, a plurality of sleeves 11 are inserted around each second bare wire 5 at regular intervals, at which time the second bare wire 5 is inserted into the second insertion hole 25 of the sleeve 11. .

Next, the first bare wire in the transverse direction is sequentially in the first insertion hole 23 of each sleeve 11 from the first insertion hole 23 of the sleeve 11 positioned at the leftmost or rightmost to the right or left side. Insert (3). Then, as shown in FIG. 9, after the plurality of longitudinal transverse copper lines 5 and 3 are inserted into the first and second insertion holes 25 and 23 of each sleeve 11 and arranged in a lattice form, each sleeve ( 11, the both ends of the first and second insertion pipes 13 and 15 are sequentially tightened to the outer peripheral surfaces of the copper wires 3 and 5 to form shaft diameters 27 and 29, thereby forming the sleeve 11 and the longitudinal and horizontal wire ( 5,3) to be fixed in one bundle.

In this way, when the sleeve 11 is joined to all intersections of the longitudinal and horizontal spiral lines 5 and 3, one ground reticular electrode 1 is installed in the ground.

1 is a front cross-sectional view of a thermite welding tool for explaining a conventional network electrode copper wire bonding method by thermite welding.

2 is a schematic plan view of a mesh electrode bonded to a bare copper wire using a C-type sleeve.

3 is a cross-sectional view of the C-shaped sleeve and the bare wire shown in FIG.

4 is a schematic plan view of a reticulated electrode bonded to a bare copper wire using a cruciform sleeve.

5 is a schematic plan view of a mesh electrode bonded to a bare copper wire using a three-dimensional cross-shaped sleeve;

Figure 6 is a partial perspective view for explaining the disadvantages of the application of the sleeve shown in FIG.

7 is a perspective view of a tubular cross sleeve in accordance with the present invention.

8 is a front view of FIG. 7;

9 is a schematic perspective view of a mesh electrode bonded to a bare tube using a tubular cross sleeve according to the present invention;

10 is a plan view of FIG. 8.

<Description of the symbols for the main parts of the drawings>

1: reticular electrode 3: first bare copper wire

5: second bare wire 11: tubular cross sleeve

13: 1st insertion pipe 15: 2nd insertion pipe

21: connecting portion 23: the first insertion hole

25: second insertion hole 27, 29: shaft diameter portion

Claims (2)

delete A first insertion tube 13 adapted to sandwich the first bare wire 3; A second insertion pipe 15 orthogonal to the first insertion pipe 13 to sandwich the second bare wire 5 orthogonal to the first bare wire 3; And A connection part 21 formed integrally between the first insertion tube 13 and the second insertion tube 15 to directly connect the first insertion tube 13 and the second insertion tube 15; Lose, Each of the first and second insertion pipes 13 and 15 may be compressed at circumferences of the first and second bare wires 3 and 5 to form shaft diameters 27 and 29, respectively. And a tubular cross sleeve for joining a spiral wire of the mesh electrode, which is integrally fixed so as not to move relative to the second bare wire (3,5).

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