KR100874905B1 - Compressing method of compression type clamp for fixing a power cable - Google Patents

Abstract

A compressing method of a compression type clamp for fixing a transmission line is provided to reduce power loss by preventing a corona discharge generated between the transmission lines. A steel cored clamp and a steel cored iron line are joint-connected by compressing and forming the coupling part of the steel cored iron line by a compressor after coupling the steel cored iron line of a transmission line connected to a pylon to a steel cored iron line coupling part of the steel cored clamp(S100). The conductive compound is received in a receiving part formed in an axial direction inside a pipe body surrounding an outer surface of the transmission and the outer surface of the steel cored clamp(S200). The pipe body is successively compressed and formed from the outer side to the inner side by coupling the pipe body to the outer side of the steel cored clamp(S300).

Description

Compression method of compression type clamp for fixing a power cable

According to the present invention, when compression molding a pipe body of a compression anthropomorphic clamp used in the construction of a power transmission line, it prevents some swelling phenomenon of the power transmission line (several strands of strands are spirally twisted outward of the steel core wire), and The present invention relates to a method for compressing a compression line clamp for fixing a transmission line to reduce the consumption of conductive compound applied to the inner surface.

More specifically, in the case of compression molding a pipe body in which the conductive compound is accommodated on the inner side by a compressor, the inside of the pipe body (formed from the Al material having a high combustion rate) (the side to which the transmission line is coupled) from the inside (to By sequentially compacting the steel clamps to the side where they are joined (ie, the transmission line pylon side), the conductive compound is filled in the empty space of the connection between the steel clamp and the transmission line, reducing the consumption of expensive conductive compounds, The present invention relates to a method for compressing a compression line clamp for fixing a transmission line to prevent power loss by preventing corona discharge generated between transmission lines due to swelling of the transmission line.

In general, when constructing a transmission line for supplying electricity, a plurality of compressed human clamps are installed at the end of the transmission line to maintain a good tensile state of the transmission line. At the same time, it is a device that preserves the state of the connection of the transmission line well.

The above-mentioned compressed human clamp is manufactured as a highly conductive aluminum (Al) material that maintains durability against vibrations due to the weight and wind pressure of the transmission line itself and can transmit high quality electricity.

As shown in Figs. 1 to 3, the compression line clamp for fixing a transmission line according to the prior art is a hydraulic compressor (about 100) in which a steel core wire 1a (a part of an Al material wire is peeled off) of the transmission line 1 is coupled. A strong core coupling part 2 formed to be compressed and fixed by a compression force of about a ton, and an uneven part 3 and an uneven part 3 formed on an upper part of the strong core coupling part 2; Steel clamp 5 consisting of a connecting ring (4) formed by maintaining a constant distance,

It is fixed to the outer surface of the steel clamp (5) and includes a pipe body (6) to secure a certain length so as to surround a portion of the power transmission line (1).

In order to support and secure the end of the electric wire of the catenary angle of the transmission line 1 in the transmission tower pylon (7), a compressed human clamp 10 is installed, a jumper wire (8) in the lower portion of the compressed human clamp 10 ) Is connected with a jumper terminal 9 for connecting the power transmission line 1 to be conducted.

Accordingly, when constructing a transmission line, the steel core wire 1a of the transmission line 1 is fixed by using the compression anthropogenic clamp 10. The steel cores 1a of the steel clamps 5 are coupled to the steel cores 1a and pressed in a radial direction by a compressor (shown to be pressed in a hexagon in FIG. 3), and then the compressed steel clamps 5 are piped. After coupling to the body 6, injecting the conductive compound into the space of the strong core coupling portion (2) through the injection hole (not shown) formed in the pipe body (6) Injection), the inlet is sealed as a stopper.

The pipe body 6 in the section excluding the above-described strong core coupling part 2 is press-molded in a radial direction using a compressor to fix the steel clamp 5 to the pipe body 6. As a result, the uneven part 3 of the steel clamp 5 is compressed, and the strong core coupling part 2 can be crimped and connected in the longitudinal direction to the connection part of the power transmission line 1 without being compressed again.

On the other hand, when compressing a compression line clamp for transmission line fixing according to the prior art, a pipe in which the conductive compound C is applied to the inner surface of the steel clamp 5 in which the steel core wire 1a of the transmission line 1 is crimped and fixed. When press-bonding to the body 6 in the radial direction, it refers to the side from which the inside of the pipe body 6 (to which the steel clamp 5 is coupled (to the transmission line pylon side)) to the outside (to which the transmission line is coupled). Compression molding in order to

At this time, as shown in FIG. 2, the joining portion a of the steel clamp 5 with respect to the pipe body 6 is typically 200 mm, and the joining portion of the power transmission line 1 with respect to the pipe body 6. (b) is 300 mm normally. In other words, the amount of conductive compound is relatively higher in the "b" section than in the "a" section.

Due to this, when press-molding from the inside of the pipe body 6 to the outside, the conductive compound is filled in the empty space s between the outer surface of the steel core coupling part 2 and the pipe body 6, while the pipe Since the empty space is relatively small between the body 6 and the power transmission line 1, a large amount of conductive compound is discharged to the outside.

That is, since the conductive compound (C) is discharged to the outside through the outside of the pipe body (6), a large amount of expensive conductive compound (C) is consumed to cause a problem of rising work cost.

In addition, since the transmission line 1 of the "b" section is pushed in the compression direction during compression molding from the inside of the pipe body 6 to the outside, it is inflated between the element wires of the power transmission line 1 at the outside of the pipe body 6. Phenomenon occurs. As a result, noise is generated due to the mutual collision of the strands, in which several strands are twisted in a spiral.

In addition, there is a problem that causes a lot of power loss due to the corona discharge generated between the power transmission line 1 due to swelling between the wires of the power transmission line (1).

Embodiment of the present invention, when the steel core of the transmission line is crimped fixed to the pipe body coated with the conductive compound applied to the inner side when the compression molding, the compression molding so as to face inward from the outside of the pipe body, Since the compound is filled in the empty space at the connection portion between the steel clamp and the transmission line, it is related to the compression method of the compression line clamp for fixing the transmission line to reduce the consumption of expensive conductive compound.

Embodiment of the present invention, when the compression line is bonded to the pipe clamped to the pipe body so that there is no gap between, during the compression molding, due to the swelling of the transmission line to prevent the mutual collision of wires made of several strands spirally In addition, the present invention relates to a method of compressing a compression line clamp for fixing a transmission line to prevent corona discharge generated between transmission lines due to swelling of the transmission line.

Compression method of a compression line clamp for fixing a transmission line according to an embodiment of the present invention,

A first step of joining the steel clamps with the steel core wires by pressing the steel core wires of the transmission line connected to the steel tower of the steel clamps by pressing and then forming the steel core wires by compression;

A second step of receiving the conductive compound in the receiving portion formed in the axial direction on the inner surface of the pipe body surrounding the outer surface of the steel clamp and the outer surface of the power transmission line;

Combining the pipe body to the outside of the steel clamp to press-fit the pipe body by the compressor to fix the pipe body to the steel clamp and power transmission line, while reducing the emission of the conductive compound contained in the receiving portion during the compression molding of the pipe body, and prevents inflation of the power line And a third step of sequentially compression molding from the outside of the pipe body to the inside so as to be able to do so.

According to a preferred embodiment, the outer surface of the pipe body described above is shown at equal intervals, and includes a display unit for indicating the starting position and the moving direction of the compression molding to the worker during the compression molding of the pipe body.

When inserting the transmission line into the pipe body described above includes a cap coupled to the outer surface of the one end of the stripped off of the transmission line to prevent pushing the conductive compound contained in the inner surface of the pipe body.

The cross-sectional shape of the receiving portion formed on the inner surface of the pipe body described above is formed of any one of spherical, semicircular, triangular and polygonal.

It is formed on the outer surface of the above-described steel clamp, and includes a first, second display portion for visually confirming the position before and after the compression molding of the pipe body.

The stopper formed in the above-described steel clamp is formed 5 to 10 mm outside of the second display portion.

As described above, the compression method of the compression line clamp for fixing the transmission line according to an embodiment of the present invention has the following advantages.

When the steel core of the transmission line is crimped and fixed to the pipe body coated with the conductive compound on the inner side, the conductive compound is press-molded to face inward from the outside of the pipe body. Filled in the empty space of the connection portion of the pipe body to reduce the amount of discharged to the outside can reduce the consumption of expensive conductive compound.

In addition, by combining the steel clamp with the power line crimped to the pipe body to prevent a gap between them, during compression molding, the noise generated by the mutual collision of the wires formed by twisting the strands spirally due to the swelling of the power line In addition, power loss may be reduced by preventing corona discharge generated between power transmission lines due to swelling of power transmission lines.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to explain in detail enough to enable those skilled in the art to easily practice the present invention. It is not intended that the technical spirit and scope of the invention be limited.

As shown in Figure 4 to 10, the compression method of the compression line clamp for fixing the transmission line according to an embodiment of the present invention,

After coupling the steel core wire 1a of the transmission line 1 connected to the steel tower (not shown) to the steel core wire coupling portion 2 of the steel clamp 5 (formed from Al material having excellent elongation), a hydraulic compressor (not shown) The first step (S100) for jointly connecting the steel clamp (5) and the steel core wire (1a) by pressing the steel core wire coupling portion (2) in a radial direction;

Second step (S200) for receiving the conductive compound (C) in the receiving portion 11 formed in the axial direction on the inner surface of the pipe body (6) surrounding the outer surface of the steel clamp (5) and the power transmission line (1) )Wow,

After coupling the pipe body 6 (formed from Al material having excellent elongation) to the outside of the steel clamp 5, the pipe body 6 is press-molded in a radial direction by a hydraulic compressor to produce the steel clamp 5 and the power transmission line ( 1) The pipe body 6 is fixed to the pipe body 6 to reduce the discharge of the conductive compound (C) accommodated in the receiving portion 11 during the compression molding of the pipe body 6, so as to prevent the swelling of the transmission line (1) The third step of sequentially press molding from the outside of the body 6 (referring to the side to which the transmission line 1 is coupled) from the outside (referring to the side to which the steel clamp 5 is coupled (to the transmission line pylon side)) S300).

At this time, the outer surface of the above-described pipe body 6 is displayed at equal intervals, and includes a display unit 12 for informing the starting position and the moving direction of the compression molding to the operator during the pipe body (6).

When the power transmission line 1 is inserted into the pipe body 6 described above, the outer end of the stripped line of the power transmission line 1 may be prevented from being pushed out of the conductive compound c contained in the inner surface of the pipe body 6. A cap 13 coupled to the side.

The cross-sectional shape of the receiving portion 11 formed on the inner surface of the pipe body 6 described above is formed of any one of a sphere, a semicircle, a triangle, and a polygon.

It is formed on the outer surface of the above-mentioned steel clamp 5, and includes the 1st, 2nd display part 5a, 5b which can visually confirm the position before crimping and after crimping of the pipe body 6.

In the drawings, reference numeral 14 denotes an uneven portion formed on the outer surface of the steel clamp 5 to increase mutual adhesion with the pipe body 6 when the pipe body 6 is press-molded, and 15 is a portion of the pipe body 6. It is a bracket that can connect a jumper wire (not shown) to one side of the compression human clamp as the jacket is fixed at one end and the jumper socket is fixed.

At this time, the steel core wire (1a) coupled to the steel core coupling portion (2) is crimped and fixed in a radial direction by the hydraulic compressor, the steel clamp (5) is coupled to the pipe body (6) and then crimped in the radial direction by the hydraulic compressor When the pipe body 6 is press-molded, the conductive compound C accommodated in the accommodating part 11 is ejected in a radial direction so that the outer surface of the steel clamp 5 and the power transmission line 1 and the pipe body 6 are fixed. Since the technical contents which apply | coat to the clearance gap between the inner surface of and seal these clearances are technical descriptions used substantially in the said field, these detailed description is abbreviate | omitted.

Hereinafter, with reference to the accompanying drawings an example of the use of the compression method of the compression line clamp for fixing the transmission line according to an embodiment of the present invention will be described in detail.

As shown in Figs. 4 to 8, as described in S100, a portion of the core wire 1a (held twisted in a spiral shape) of the power transmission line 1 is removed from the steel core wire coupling portion 2 of the steel clamp 5. Combined). As the steel core wire engaging portion 2 is press-molded by a hydraulic compressor (a state in which the hexagonal crimp is shown in FIG. 8 (a, b) is shown), the steel core wire 1a is crimped to the steel core wire coupling portion 2. Can be fixed

Therefore, the steel clamp 5 and the steel core wire 1a can be crimped and connected.

As described in S200, as shown in FIGS. 8A and 9A, the conductive compound C is accommodated in the receiving portion 11 formed in the axial direction on the inner surface of the pipe body 6. . At this time, the cross-sectional shape of the receiving portion 11 may be formed of any one of a sphere, a semicircle, a triangle, a polygon.

As described in S300, after coupling the pipe body 6 (formed from Al material having excellent elongation) to the outside of the steel clamp 5, as shown in Figure 9 (a, b), the pipe by a hydraulic compressor The body 6 is press-molded in the radial direction to fix the pipe body 6 to the steel clamp 5 and the power transmission line 1.

In this case, as shown in FIG. 7, when the pipe body 6 is press-molded in the radial direction, the inside of the pipe body 6 is moved from the outside of the pipe body 6 along the indicator 12 marked on the outer surface of the pipe body 6. Sequentially press molding to face (ie press molding to start in the "b" section (usually formed to 300 mm) and finish in the "a" section (usually formed to 200 mm).

Thus, the conductive compound C accommodated in the receiving portion 11 formed on the inner surface of the pipe body 6 is an empty space s between the steel core coupling portion 2 of the steel clamp 5 and the pipe body 6. ), It is possible to significantly reduce the discharge of the expensive conductive compound (c) to the outside of the pipe body (6).

In addition, even when the receiving portion 11 is filled with a small amount of the conductive compound (c), the amount of the compound (c) is pushed inward from the power transmission line (1) side when the pipe body 6 is compressed, so the space (s) can be filled completely. In addition, as the pipe body 6 is press-molded from the "b" section, the transmission line 1 pushed inwardly is filled in the space s so that the space s can be reduced (in the past, the space s is forcibly forced). A plurality of liners in the form of washers are pressed between the steel clamps 5 and the power transmission lines 1 in order to shrink.

In the meantime, when the pipe body 6 to which the steel clamp 5 to which the steel core wire 1a of the power transmission line 1 is jointly connected is press-molded from the outside to the inward direction, the agent is formed on the outer surface of the steel clamp 5. After starting the compression molding at the position of the first display portion 5a (indicating the position before the crimp molding of the pipe body 6), the second display portion 5b (indicating the position after the crimp molding of the pipe body 6) position Press to complete the press molding operation.

At this time, since the pipe body 6 formed of Al material is expanded in length, the bracket 15 is moved to the position of the second display portion 5b. For this reason, it can visually confirm that the pipe body 6 was crimped | molded correctly.

At this time, the length of the conventional steel clamp 5 by the length L (formed by about 5 to 10 mm longer than the conventional one) between the second display portion 5b and the stopper 5c of the steel clamp 5. As it is formed longer (that is, the length from the uneven portion 14 of the steel clamp 5 to the stopper 5c portion is formed longer than that of the conventional steel clamp by about 5 to 10 mm), the pipe body 6 It is possible to prevent the bracket 15 from coming in contact with the stopper 5c of the steel clamp 5 due to the expansion of the length).

In addition, when the pipe body 6 is press-molded to face inward from the outside of the pipe body 6 during the press molding, the swelling of the transmission line 1 twisted spirally at a position corresponding to the outside of the pipe body 6. And the space s can be reduced. As a result, it is possible to prevent corona discharge generated between the power transmission lines 1, thereby greatly reducing power loss.

As described above, in the compression method of a compression line clamp for fixing a transmission line according to an embodiment of the present invention, when the pipe body, in which the conductive compound is accommodated on the inner side, is press-molded by a hydraulic compressor, the inside of the pipe body from the outside of the pipe body. By sequentially squeezing toward, the conductive compound fills the voids of the connection between the steel clamp and the transmission line, reducing expensive conductive compound emissions and preventing corona discharges between the transmission lines due to swelling of the transmission line. This can reduce power loss.

1 is a state of use of the compression line clamp for fixing the transmission line according to the prior art,

2 is a schematic view of a compression line clamp for fixing a transmission line according to the prior art,

3 is a cross-sectional view taken along the line A-A of FIG. 2;

4 is a flow chart for explaining a compression method of a compression line clamp for fixing a transmission line according to an embodiment of the present invention;

Figure 5 is an exploded perspective view before the fastening of the transmission line clamping human clamp for fixing according to an embodiment of the present invention,

Figure 6 is a perspective view after the fastening of the compression line clamp for fixing the transmission line according to an embodiment of the present invention,

7 is a view for explaining a compression method of a compression line clamp for fixing a transmission line according to an embodiment of the present invention,

FIG. 8 (a) is a cross sectional view taken along the line B-B shown in FIG. 7, which is a cross sectional view of a state before the pipe body is compressed;

(B) is sectional drawing in the B-B line | wire shown in FIG. 7, and the figure of the state which compressed the pipe body,

FIG. 9 (a) is a cross sectional view taken along the line C-C shown in FIG. 7, before the pipe body is compressed;

(B) is sectional drawing in the C-C line shown in FIG. 7, Comprising: The pipe body is compressed,

FIG. 10 is an enlarged view of a portion “D” shown in FIG. 7.

* Explanation of symbols used in the main part of the drawing

One; Power line

1a; Steel core

2; Strong core coupling

5; Steel clamps

5a; First display part

5b; Second display part

6; Pipe body

11; Receptacle

12; Display

13; cap

14; Irregularities

C; Conductive compound

Claims (5)

A first step of joining the steel clamps and the steel core wires by pressing the steel core wires of the transmission line connected to the steel towers by pressing the steel core wires of the steel clamps; A second step of receiving the conductive compound in the receiving portion formed in the axial direction on the inner surface of the pipe body surrounding the outer surface of the steel clamp and the outer surface of the power transmission line; And Coupling the pipe body by the compressor by combining the pipe body to the outside of the steel clamp to fix the pipe body to the steel clamp and power transmission line, while reducing the emission of the conductive compound accommodated in the receiving portion during the compression molding of the pipe body And a third step of sequentially compression molding from the outside of the pipe body to the inside so as to prevent the swelling. The transmission line fixing compression of claim 1, further comprising a display unit which is displayed at equal intervals on the outer surface of the pipe body, and which indicates a starting position and a moving direction of press-molding the pipe body when the pipe body is pressed. Compression method of human clamp. 3. The method of claim 2, wherein when the power line is inserted into the pipe body, the cap includes a cap coupled to an outer surface of the one end portion of which the sheath of the power line is peeled off to prevent pushing the conductive compound contained in the inner surface of the pipe body. Compression method for a compression line clamp for fixing a transmission line. 4. The compressed human wire fixing apparatus according to claim 3, further comprising first and second display parts formed on an outer surface of the steel clamp and configured to visually confirm the position before and after compression molding of the pipe body. 5. Compression method of clamp. The compression method of claim 4, wherein the stopper formed in the steel clamp is formed 5 to 10 mm outside the second display portion.

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