KR102195383B1 - Thermal Deicer for Transmission Line - Google Patents

Abstract

The present invention is a transmission line that can prevent or remove ice and snow on a transmission line with very little weight by securing necessary heat generation by using a conductor such as aluminum having a higher conductivity than a magnetic body. It relates to an ice-snow removal device, wherein the ice-snow removal device of a transmission line according to the present invention comprises: a main body installed to surround the outside of the transmission line; A plurality of eddy current inducing members made of a conductive material installed at intervals along the circumferential direction of the main body and arranged in parallel with the transmission line, generating an eddy current by a current flowing along the transmission line to generate heat; And an insulating member made of an insulating material installed between the inner surface of the main body and the outer surface of the transmission line.

Description

Ice and snow removal device for transmission line {Thermal Deicer for Transmission Line}

The present invention relates to an apparatus for removing ice and snow in a transmission line, and more particularly, to generate an eddy current in a conductive metal by a current flowing along the transmission line, and to reduce resistance loss due to eddy current. It relates to an ice and snow removal device for a transmission line capable of removing ice and snow on a transmission line by generating heat.

Due to the recent severe climate change, heavy snowfalls and blizzards in winter occur frequently around the world. In particular, in the case of Korea, most of the total area is mountainous, and most of the transmission lines that supply power are often installed across the mountainous area. Therefore, in winter, the low temperature and frequent snowing will seriously affect the transmission line. Once snow and ice accumulate on the transmission line, the sagging phenomenon of the electric wire increases due to the increase in weight, which causes a line breakdown that causes contact with other electric wires. In general, a transmission line has a dip by slightly loosening the wires between the spiers, but in a situation where the sagging phenomenon is increased due to the increase in weight due to ice and snow on the transmission line, low-frequency vibration caused by the wind (galloping) Phenomenon) or a sleep jump in which the ice and snow on the electric wires are eliminated at once under certain conditions can cause a large-scale power outage or personal injury.

Therefore, various methods have been devised to prevent breakdowns occurring in the transmission line due to ice and snow, but it is mainly used to blow off snow accumulated on the wire by generating wind using helicopters or drones, or to remove ice and snow directly by humans. That's the way.

However, in the event of heavy snowfall in mountainous areas, it is not only very difficult but also impossible to remove ice and snow from transmission lines by mobilizing human resources continuously. To overcome this shortcoming, several thermal and mechanical methods have recently been proposed to remove ice and snow from transmission lines. For example, Patent No. 10-1599267 proposes a method of preventing icing and snow by continuously vibrating a transmission line using a mechanical device, but a transmission line of substantial weight, including energy supply and demand measures for driving the vibration system. It is difficult to secure the necessary power to excite the furnace, and the transmission line is greatly shaken by vibration, and there is a risk of breakage due to inter-line contact and torsion, and the same power must be used even when the part requiring snow removal is limited, resulting in a large power loss. Is not being applied.

Registration Patent No. 10-1554983 is to improve the hydrophobicity to a certain level by modifying the surface of an aluminum transmission line and then coating it with a nanohybrid insulating resin to prevent damage to the transmission line due to rain and icing in winter. Disclosed is a "method of manufacturing an aluminum transmission line that prevents icing and snow."

However, the above-described transmission line has a problem of low cost-efficiency, a problem of having to be re-coated when the coating on the surface of the transmission line is worn, and it cannot be applied to an existing transmission line, and thus a transmission line must be newly installed.

In Korean Patent Publication No. 10-2018-0032073, it is a device for preventing ice and snow that is difficult to settle around the outer circumference of a transmission line composed of twisted wires, and is integrated by applying a sealing pad and a manual folder to a soft magnetic metal ring that generates heat due to iron loss. By doing so, it discloses a "difficulty ice and snow prevention device" that stably controls the transmission line and prevents ice and snow sticking between the strands of the wire and the wire.

However, in the apparatus for preventing difficult ice and snow, the material used is vulnerable to deterioration by ultraviolet rays, there is a risk of damage due to twisting of the wire, and only the iron loss generated from the magnetic body is utilized, so the cross section of the magnetic material is relatively It must be large, and this has a problem that acts as a load on the transmission line.

Korean Registered Patent No. 10-1599267 (registered on February 25, 2016) Korean Patent Registration No. 10-1554983 (registered on September 16, 2015) Republic of Korea Patent Publication No. 10-2018-0032073 (published on February 29, 2018) Republic of Korea Patent Publication No. 10-2009-0116034 (published on November 11, 2009)

The present invention is to solve the above problem, and an object of the present invention is to secure necessary heat generation by using a conductor such as aluminum having a high conductivity compared to a magnetic body, and by using a conductor and a magnetic body, or a combination of a conductor and a non-magnetic body, with very little weight. It is to provide a device for removing ice and snow on a transmission line that can prevent or remove ice and snow on a transmission line.

In order to achieve the above object, the apparatus for removing ice and snow of a transmission line according to the present invention comprises: a main body installed to surround the outside of the transmission line; And a plurality of eddy current inducing members made of a conductive material that are installed in the main body at intervals along the circumferential direction, are arranged in parallel with the transmission line, generate eddy current by a current flowing along the transmission line and generate heat.

The apparatus for removing ice and snow on a transmission line according to the present invention may further include an insulating member made of an insulating material that is installed between an inner surface of the main body and an outer surface of the transmission line.

According to one aspect of the present invention, the eddy current inducing member may be formed of a flat plate made of a conductive metal material.

According to another aspect of the present invention, a plurality of slits may be formed in the eddy current inducing member at regular intervals.

According to still another aspect of the present invention, the eddy current inducing member may include an insulating plate made of an insulating material and a plurality of conductive metal plates arranged in a strip shape at regular intervals on the insulating plate.

The eddy current inducing member may be installed to extend in a longitudinal direction from one end of the main body to the other end.

The eddy current inducing member may be installed to be buried in the insertion groove formed at regular intervals along the circumferential direction in the main body.

The apparatus for removing ice and snow according to the present invention comprises a coil wound in a toroidal shape along the longitudinal direction of the main body and arranged at intervals in the circumferential direction of the main body to generate induced electromotive force, and electrically connected to the coil. It may further include a storage battery for charging the induced electromotive force generated in the coil.

An apparatus for removing ice and snow in a transmission line according to another aspect of the present invention includes: a body portion installed to surround the outside of the transmission line; An insulating support member installed between the inner circumferential surface of the main body and the outer surface of the transmission line in the inner space of the main body to support the inner circumferential surface of the main body at a predetermined interval with respect to the transmission line; And, a plurality of conductive materials that are installed at intervals along the circumferential direction in the inner space of the main body, are installed to maintain a constant distance from the transmission line, and generate eddy current by the current flowing along the transmission line to generate heat. Eddy current inducing member of; may include.

Here, the insulating support member may include a ring-shaped mounting support fixed to the inner circumferential surface of the main body, and a ring-shaped insulating holder having an outer surface fixed to the mounting supporter and an inner surface contacting the outer surface of the transmission line.

The eddy current inducing member may be installed to extend in the longitudinal direction of the main body from both ends of the insulating support member.

In addition, the eddy current inducing member may be formed of a flat plate made of a conductive metal material.

A plurality of slits may be formed in the eddy current inducing member at regular intervals.

The eddy current inducing member may include an insulating plate made of an insulating material, and a plurality of conductive metal plates arranged in a strip shape at regular intervals on the insulating plate.

In addition, the ice and snow removal device of the present invention is wound in a toroidal shape along the length direction of the main body and is arranged at intervals in the circumferential direction of the main body to generate induced electromotive force, and the coil is electrically connected to the coil. It may further include a storage battery for charging the induced electromotive force generated in the coil.

According to the present invention, a plurality of eddy current inducing members made of a conductive metal material such as aluminum are installed in the main body made of a magnetic material or a non-magnetic material in parallel with the transmission line, and the eddy current is generated by the high current flowing through the transmission line, thereby reducing resistance loss. Heat is generated by this heat, and ice and snow damage of the transmission line can be prevented by this heat.

Therefore, it is possible to prevent or remove the ice and snow of the transmission line with very little weight, the installation and maintenance of the ice and snow removal device is very easy, and there is an effect of manufacturing the ice and snow removal device economically and inexpensively.

1 is a perspective view of an apparatus for removing ice and snow of a transmission line according to an embodiment of the present invention.
FIG. 2 is a cross-sectional side view of the apparatus for removing ice and snow of the transmission line shown in FIG. 1.
3 is a view showing various embodiments of an apparatus for removing ice and snow on a transmission line according to the present invention
4 is a cross-sectional side view of an apparatus for removing ice and snow of a transmission line according to another embodiment of the present invention.
5A to 5C are views showing various embodiments of an eddy current inducing member constituting an ice-snow removal device of a transmission line according to the present invention.
6 is a view showing another embodiment of the eddy current inducing member constituting the ice and snow removal device of the transmission line according to the present invention.
7 is a view showing the density and magnetic flux flowing through the eddy current inducing member of the apparatus for removing ice and snow in a transmission line according to the present invention through finite element analysis.
8 is a block diagram of an apparatus for removing ice and snow in a transmission line according to another embodiment of the present invention.
9 is a front view of the ice and snow removal apparatus shown in FIG. 8.
10 is a cross-sectional view of an apparatus for removing ice and snow of a transmission line according to another embodiment of the present invention, as viewed from the front.

The embodiments described in the present specification and the configurations shown in the drawings are only preferred examples of the disclosed invention, and there may be various modifications that may replace the embodiments and drawings of the present specification at the time of filing of the present application.

Hereinafter, an apparatus for removing ice and snow of a transmission line will be described in detail according to embodiments described below with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same components.

1 to 3, the apparatus for removing ice and snow on a transmission line according to an embodiment of the present invention includes a main body 10 installed to surround the outside of a transmission line T, and a circumferential direction on the main body. A plurality of eddy current inducing members 20 that are installed at intervals along the line to generate eddy current and generate heat by the current flowing along the transmission line, and between the inner side of the main body 10 and the outer side of the transmission line T It includes an insulating member 30 made of an insulating material installed on.

The main body portion 10 is opened at both ends and has a cylindrical tube shape having an inner diameter slightly larger than the diameter of the transmission line T, and is coupled to surround the outside of the transmission line T. In this embodiment, the main body 10 is formed integrally, but as shown in FIG. 4, the main body 10 is easily detachably coupled to the transmission line T through the hinge shaft 12 as a medium. It is configured to be divided into two parts connected to enable relative rotation, and a binding tool 13 using a known clamping mechanism may be provided on the opposite side of the hinge shaft 12.

The main body 10 may be made of a metal material or a magnetic material such as ferrite, but may be made of a light non-magnetic material such as plastic. When the main body 10 is made of a magnetic material, heat is generated due to iron loss, thereby contributing to the removal of ice and snow. In addition, when the body portion 10 is made of a non-magnetic material, the total weight of the ice/snow removal device can be significantly reduced, which is advantageous in weight reduction.

The eddy current inducing member 20 is installed at intervals along the circumferential direction on the main body 10, and is made of a conductive material such as aluminum in the form of an elongated square plate arranged in parallel with the transmission line T. Eddy current is generated by the electric energy of a large current flowing along (T), and heat is generated by resistance loss due to the eddy current. In this embodiment, four eddy current inducing members 20 are installed along the circumferential direction, but various numbers such as 8 or 12 along the circumferential direction as shown in Figure 3(b) and (c) Eddy current inducing member 20 can be installed at regular intervals.

The eddy current inducing member 20 may be installed to extend in the longitudinal direction from one end to the other end of the main body 10. The eddy current inducing member 20 may be integrally manufactured with the main body 10 by an insert injection method, but may be coupled to the main body 10 by a fastening means such as an adhesive or screw, as shown in FIG. As described above, a plurality of insertion grooves 11 having a length and width corresponding to the length and width of the eddy current inducing member 20 are formed in the main body 10 at regular intervals along the circumferential direction of the main body 10, An eddy current inducing member 20 may be installed inside the insertion groove 11 to be buried. Here, each of the insertion grooves 11 is formed to extend along the length direction of the transmission line T from one end to the other end of the main body 10.

The eddy current inducing member 20 may have a flat plate shape in which the whole is completely closed, but may be formed of a plate made of a conductive metal material in which a plurality of slits 21 are arranged at regular intervals as shown in FIGS. 5A to 5C. . The slit 21 of the eddy current inducing member 20 shown in FIG. 5A has a direction orthogonal to the longitudinal direction of the eddy current inducing member 20, that is, has a shape extending along the width direction of the eddy current inducing member 20, The slit 21 of the eddy current inducing member 20 shown in FIG. 5B has a shape extending in a direction inclined at a certain angle with respect to the longitudinal direction of the eddy current inducing member 20. In addition, the slit 21 of the eddy current inducing member 20 shown in FIG. 5C is formed in a'<' shape along the longitudinal direction of the eddy current inducing member 20.

When the plurality of slits 21 are formed in the eddy current inducing member 20 as described above, an eddy current is formed along the periphery of the slit 21 and the amount of resistance loss due to the eddy current can be adjusted.

In addition, the eddy current inducing member 20 may be made entirely of a flat plate made of a metal material such as aluminum, but as shown in FIG. 6, the insulating plate 22 made of the insulating material and the strip form are constant in the insulating plate 22. It may be formed of a plurality of conductive metal plates 23 arranged at intervals.

The insulating member 30 is made of an insulating material and is installed on the inner circumferential surface of the main body 10, and prevents the main body 10 and the eddy current inducing member 20 from contacting the outer surface of the transmission line T.

As described above, when a plurality of eddy current inducing members 20 made of a conductive material such as aluminum are installed in parallel with the transmission line T in the cylindrical body 10, eddy currents are generated in the eddy current inducing member 20. . Since a large current flows through the transmission line (T), a large magnetic field is generated around the transmission line (T). Since such a magnetic field alternates with the power frequency, eddy current in the eddy current inducing member 20 made of aluminum plate according to Faraday's law. Is generated, heat is generated due to resistance loss, and ice and snow damage of the transmission line T can be prevented by this heat.

7 is a finite element showing the density and magnetic flux flowing through the eddy current inducing member 20 when 24 eddy current inducing members 20 made of aluminum are arranged at equal intervals along the circumferential direction of the main body 10 It is expressed through interpretation.

8 and 9 show another embodiment of the ice and snow removal device according to the present invention. The ice and snow removal device of this embodiment is generated in the transmission line T while maintaining the configuration of the ice and snow removal device of the first embodiment described above. The storage battery 50 can be charged by winding the coil 40 that generates induced electromotive force by the magnetic field.

The coil 40 is wound around the main body 10 in a toroidal shape along the longitudinal direction, and is arranged at regular intervals in the circumferential direction of the main body 10 to generate induced electromotive force, thereby generating the storage battery 50 Electric energy is charged to The coil 40 is wound inside and outside the main body 10 between the eddy current inducing members 20.

The electric energy charged in the storage battery 50 may be used as power for various sensors and communication modules for monitoring the transmission line T.

10 is a view showing an apparatus for removing ice and snow in a transmission line according to another embodiment of the present invention. The apparatus for removing ice and snow in this embodiment includes an inner circumferential surface of the main body 10 and a transmission line in the inner space of the cylindrical main body 10. An insulating support member 60 installed between the outer surfaces of the furnace T and supporting the inner circumferential surface of the main body 10 with a predetermined interval with respect to the transmission line T, along the circumferential direction in the inner space of the main body. It includes a plurality of eddy current inducing members 20 installed at intervals.

The insulating support member 60 is installed in the center of the inner space of the main body 10. In order to allow the main body 10 and the eddy current inducing member 20 to maintain a predetermined distance from the outer surface of the transmission line T by the insulating support member 60, the insulating support member 60 A ring-shaped mounting support 61 fixed to the inner circumferential surface of the central portion of the unit 10, and a ring-shaped insulating holder 62 whose outer surface is fixed to the mounting supporter and the inner surface contacts the outer surface of the transmission line. .

The mounting supporter 61 is installed between the insulating holder 62 and the inner circumferential surface of the main body 10 to fix the insulating holder 62. The insulating holder 62 is made of an insulating material such as plastic or rubber, and is fitted on the outer surface of the transmission line T.

The eddy current inducing member 20 is installed to extend in the longitudinal direction of the main body 10 from both ends of the mounting supporter 61 of the insulating support member 60. Like the eddy current inducing member 20 configured in the above-described first embodiment of the ice and snow removal device, the eddy current inducing member 20 is a plate made of a conductive metal such as aluminum, or an aluminum plate having a plurality of slits 21 formed thereon, or an insulating material. The conductive metal plates 23 in the form of bands are arranged at regular intervals on the insulating plate 22 of, and an eddy current is generated by the current flowing along the transmission line T to generate heat.

The eddy current inducing member 20 maintains a constant distance from the outer surface of the transmission line T by the insulating support member 60, and nothing is interposed between the outer surface of the transmission line T and the eddy current inducing member 20 Therefore, the heat generated by the eddy current inducing member 20 is efficiently transferred to the outer surface of the transmission line T, thereby preventing the generation of ice and snow.

As described above, in the apparatus for removing ice and snow in a transmission line according to the present invention, a plurality of eddy current inducing members 20 made of a conductive metal material such as aluminum in the main body 10 made of a magnetic material or a non-magnetic material are provided in the transmission line T Since it is installed in parallel with and generates heat due to resistance loss by generating eddy current by a large current flowing through the transmission line T, it is possible to prevent ice and snow damage of the transmission line T.

In the above, the present invention has been described in detail with reference to the embodiments, but those of ordinary skill in the art to which the present invention pertains will be able to make various substitutions, additions, and modifications within the scope not departing from the technical idea described above. It is natural, and it should be understood that such modified embodiments also belong to the protection scope of the present invention defined by the appended claims below.

T: transmission line 10: main body
11: insertion groove 12: hinge shaft
13: binding tool 20: eddy current inducing member
21: slit 22: insulation plate
23: conductive metal plate 30: insulating member
40: coil 50: storage battery
60: insulating support member 61: mounting support
62: insulation holder

Claims (15)

delete delete delete delete delete delete delete delete A main body installed to surround the outside of the transmission line;
An insulating support member installed between the inner circumferential surface of the main body and the outer surface of the transmission line in the inner space of the main body to support the inner circumferential surface of the main body at a predetermined interval with respect to the transmission line; And,
A plurality of eddy currents made of a conductive material that are installed at intervals along the circumferential direction in the inner space of the main body, are installed to maintain a constant distance from the transmission line, generate eddy currents by current flowing along the transmission lines, and generate heat Guide member;
Includes;
The insulating support member includes a ring-shaped mounting supporter fixed to an inner circumferential surface of the central portion in the longitudinal direction of the main body, and a ring-shaped insulating holder whose outer surface is fixed to the mounting supporter and the inner surface is in contact with the outer surface of the transmission line,
The eddy current induction member is made of a conductive metal material and is installed to extend in the longitudinal direction of the main body from both ends of the mounting supporter, and the eddy current inducing member has a plurality of slits for adjusting the amount of resistance loss due to the eddy current. A device for removing ice and snow from transmission lines formed at regular intervals. delete delete delete delete delete The coil according to claim 9, wherein the body part is wound in a toroidal shape along the length direction and is arranged at intervals in the circumferential direction of the body part to generate induced electromotive force, and the coil is electrically connected to the coil. Ice and snow removal device of the transmission line further comprising a storage battery for charging the generated induced electromotive force.

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