JPH05219632A - Snow thawing member - Google Patents

Abstract

PURPOSE:To provide a practical snow thawing member for thawing snow effectively. CONSTITUTION:The snow thawing member 1 to be fixed on a transmission line 14 in order to prevent accretion of ice thereon comprises a magnetic body 11 producing iron loss upon conduction of the transmission line 14, a copper coating 12 covering the surface of the magnetic body 11, and a zinc or aluminium plating layer 13 covering the surface of the copper coating 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snow melting member capable of positively preventing ice and snow from adhering to a power transmission line.

[0002]

2. Description of the Related Art Snow on an overhead power transmission line causes accidents such as the collapse of a steel tower or the accident of snowfall of a structure under a wire such as a greenhouse. Therefore, especially in heavy snowfall areas,
It is necessary to prevent snow from accumulating on overhead power lines.

In order to prevent snow from accumulating on the power transmission line, for example, a magnetic body is attached to the outer circumference of the electric wire in the line direction or in the direction orthogonal to the line. This will prevent snow from accumulating due to iron loss in the magnetic material that occurs when power is applied to the power transmission line.
Furthermore, the snow adhering to the wires can be melted.

The iron loss generated in such a magnetic material is preferably large due to snow melting, but the iron loss generated in the conventional magnetic material is small and it is not sufficient for effective snow melting.

Therefore, for example, JP-A-58-22321
As disclosed in No. 1, a member has been proposed in which a magnetic material surface is coated with a highly conductive material such as copper to generate an eddy current loss to improve iron loss.

In this case, copper having the highest conductivity is preferable as the material for coating the magnetic material, but when copper comes into contact with aluminum used for the power transmission line, a problem of corrosion occurs. Due to this corrosion problem, it was difficult to put the snow-melting member coated with copper into practical use.

An object of the present invention is to provide a snow melting member which can carry out snow melting more effectively and is more practical.

[0008]

A snow melting member according to the present invention is used by being attached to a power transmission line in order to prevent ice and snow from adhering to the power transmission line. A body, a copper coating that covers the surface of the magnetic body, and a plating layer of at least one of zinc and aluminum that covers the surface of the copper coating.

The magnetic material according to the present invention is not particularly limited in terms of material and the like as long as it produces iron loss by energization of a transmission line, but if a specifically preferable magnetic material is given, For example, iron, austenitic and ferritic stainless alloys, and permalloy alloys can be mentioned.

The snow-melting member of the present invention can be formed into various forms depending on the use and the like, but generally, it can be formed into, for example, a coil shape or a ring shape.

[0011]

In the snow melting member of the present invention, the surface of the magnetic material is provided with a copper coating for improving iron loss. The copper coating is covered with a zinc plating layer or an aluminum plating layer. Therefore, corrosion is prevented.

In particular, the plated layer plays a role in preventing direct contact between the copper coating and the aluminum and preventing corrosion when the snow melting member is attached to the power transmission line.

By providing such a plating layer,
The snow melting member according to the present invention is free from the above-mentioned problem of corrosion.

As described above, the snow-melting member whose corrosion is prevented by the plating layer according to the present invention is more practical as a snow-melting member having improved iron loss.

[0015]

1 (a) and 1 (b) show a coil-shaped snow melting member formed in accordance with the present invention. Figure 1
FIG. 1A is a side view showing a state where a coil-shaped snow melting member is attached to a power transmission line, and FIG. 1B is a sectional view of the member. Figure 1
As shown in (a), the coil-shaped snow melting member 10 is used with the power transmission line 14 passing through the coil.

This coil-shaped snow melting member is formed by processing pure iron into a coil shape, coating the surface with copper, and further galvanizing or aluminum-plating the copper coating according to a usual method. The structure of the coating is as shown in FIG. 1B, and in the coil-shaped snow melting member 10, the copper coating 12 is formed on the surface of the magnetic body 11 made of pure iron, and the surface of the copper coating 12 is zinc or Aluminum plating layer 13
Are formed.

2 (a) and 2 (b) show a ring-shaped snow melting member formed according to the present invention. Figure 2
FIG. 2A is a side view showing a ring-shaped snow melting member attached to a power transmission line, and FIG. 2B is a sectional view of the member. Figure 2
As shown in (a), the ring-shaped member 20 is used with the power transmission line 14 being passed through the ring.

This ring-shaped snow-melting member is formed by coating a ring-shaped stainless alloy with copper and then zinc-plating or aluminum-plating the surface according to a usual method. The coating structure is as shown in FIG. 2B. In the ring-shaped snow melting member 20, the copper coating 22 is formed on the surface of the magnetic body 21 made of a stainless alloy, and the surface of the copper coating 22 is zinc or aluminum. Plating layer 23 is formed.

In the above embodiments, the coil-shaped and ring-shaped snow melting members have been shown, but the form is not limited to these, and various other forms are possible.

[Brief description of drawings]

1A is a side view and FIG. 1B is a sectional view showing a specific example of a snow melting member according to the present invention.

2 (a) is a side view and FIG. 2 (b) is a cross-sectional view showing another specific example of the snow melting member according to the present invention.

[Explanation of symbols]

 10 Coil-shaped Snow Melting Member 11, 21 Magnetic Material 12, 22 Copper Coating 13, 23 Plating Layer 20 Ring-shaped Snow Melting Member

Claims (1)

[Claims] 1. A snow melting member that is used by being attached to the power transmission line to prevent ice and snow from adhering to the power transmission line, the magnetic body generating iron loss due to energization of the power transmission line, and the surface of the magnetic body. A snow melting member comprising: a copper coating that covers; and a plated layer of at least one of zinc and aluminum that covers a surface of the copper coating.