CN103985468B - One is embedded can ice-melt central-tube type optical fiber composite overhead ground wire - Google Patents

Abstract

The invention relates to an embedded ice-melting central tube type optical fiber composite overhead ground wire, which is mainly used in power grids in areas where ice-covered disasters occur frequently and where ice and snow are severe. The present invention is a built-in ice-melting central tube type optical fiber composite overhead ground wire designed for areas prone to ice and snow disasters. The ground wire is embedded with a conductor and an insulating layer, which can flow through the conductor when the ground wire is covered with ice. melting ice. It can also supply power to various intelligent monitoring equipment through the embedded conductor. Including optical fiber unit, conductor, insulating layer, protective layer and metal monofilament; a layer of conductor is coated outside the optical fiber unit, an insulating layer is extruded or wrapped outside the conductor, and a protective layer is coated or extruded outside the insulating layer, Protect the insulating layer of the insulated conductor from damage, use the protected insulated conductor and the optical fiber unit as the central line, and twist a number of metal monofilaments evenly on the outer layer to form an embedded ice-melting central tube-type optical fiber composite overhead ground wire.

Description

An embedded ice-melting central tube type optical fiber composite overhead ground wire

technical field

The invention relates to an embedded ice-melting central tube-type optical fiber composite overhead ground wire, which is mainly used in power grids in areas where ice-covered disasters occur frequently and areas where ice and snow are severe. The invention is designed for areas where ice and snow disasters occur frequently An embedded ice-melting central tube-type optical fiber composite overhead ground wire. The ground wire is embedded with a conductor and an insulating layer. When the ground wire is covered with ice, the conductor can be flowed to melt ice, and the embedded conductor can Provide remote power supply for various intelligent monitoring equipment and communication relay equipment.

Background technique

my country is one of the countries with serious icing disasters on overhead transmission lines. After entering the new century, the frequency of icing accidents on transmission lines has increased significantly, and the losses have become more serious. In recent years, overhead transmission lines often suffer from icing disasters, resulting in large-scale power and communication interruptions. Because the installation method of the optical fiber composite overhead ground wire is grounded tower by tower, it cannot be energized to melt the ice. After the ground wire is covered with ice, the arc sag increases, and the wire close to the ice-melt discharges, resulting in tripping, which brings great safety hazards to the safe operation of the power grid. The research and development of ice-melting optical fiber composite overhead ground wire can effectively solve the above problems. .

Contents of the invention

The purpose of the present invention is to provide an embedded ice-melting central tube type optical fiber composite overhead ground wire for the above shortcomings. After the ground wire is covered with ice, the conductor in the optical fiber composite overhead ground wire is directly current The method to remove the icing on the surface of the ground wire can reduce accidents such as cable breakage and tripping caused by the icing of the optical fiber composite overhead ground wire.

The embedded ice-melting central tube-type optical fiber composite overhead ground wire is realized through the following technical solutions:

The embedded ice-melting central tube type optical fiber composite overhead ground wire includes an optical fiber unit, a conductor, an insulating layer, a metal tube protective layer and a metal monofilament. A layer of conductor is coated on the outside of the optical fiber unit, and an insulating layer is extruded or coated on the outside of the conductor, and a metal tube protective layer is coated on the outside of the insulating layer to protect the insulating layer of the insulated conductor from damage. A number of metal monofilaments are evenly twisted outside the protective layer of the metal tube to form an embedded ice-melting central tube-type optical fiber composite overhead ground wire.

The optical fiber unit is a stainless steel tube optical fiber unit, which is composed of stainless steel tube, optical fiber and ointment. The optical fiber is longitudinally wrapped in the stainless steel tube and filled with optical fiber ointment.

As the conductor, a layer of metal material tightly coated on the outside of the optical fiber unit is used as the conductor.

As the insulating layer, a layer of polymer insulating layer is extruded outside the conductor, or several layers of insulating films are wrapped around the conductor as the insulating layer.

The metal pipe protective layer adopts a layer of metal pipe coated on the outside of the insulating layer as the metal pipe protective layer.

The metal monofilaments include aluminum-clad steel monofilaments, aluminum monofilaments, aluminum alloy monofilaments, galvanized steel wires, etc., and are mainly used to meet the mechanical and electrical properties of the optical fiber composite overhead ground wire.

The embedded ice-melting central tube type optical fiber composite overhead ground wire has reasonable design and good practicability. The embedded ice-melting central tube type optical fiber composite overhead ground wire made by the present invention has the following technical characteristics:

1. It can melt ice. After the fiber optic composite overhead ground wire is ice-coated, current can be directly applied to the conductors in the ground wire, so that the overall temperature of the fiber optic composite overhead ground wire rises and the ice on the surface melts.

2. It has the function of long-term circulation. When the high-current ice-melting operation is not performed, the insulated conductor of the embedded ice-melting optical fiber composite overhead ground wire can be used to provide remote power supply for various monitoring and communication relay equipment.

3. The insulation performance is stable and reliable. A metal tube protective layer is added outside the insulating layer to protect the long-term safety, stability and reliability of the insulation performance of the insulating layer.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing:

Figure 1 is a schematic diagram of the structure of an embedded ice-melting central tube type optical fiber composite overhead ground wire.

detailed description

Referring to Figure 1 , the embedded ice-melting central tube type optical fiber composite overhead ground wire includes an optical fiber unit 1 , a conductor 2 , an insulating layer 3 , a metal tube protective layer 4 and a metal monofilament 5 . The optical fiber unit 1 is covered with a layer of conductor 2, the conductor 2 is extruded or covered with an insulating layer 3, and the insulating layer 3 is covered with a metal tube protective layer 4 to protect the insulating layer 3 of the conductor from damage. A plurality of metal monofilaments 5 are evenly twisted outside the protective layer of the metal tube to form an embedded ice-melting central tube-type optical fiber composite overhead ground wire.

The optical fiber unit 1 is a stainless steel tube optical fiber unit, which is composed of stainless steel tube, optical fiber and ointment. The optical fiber is longitudinally wrapped in the stainless steel tube and filled with optical fiber ointment.

The conductor 2 is used as the conductor 2 by tightly covering a layer of metal material on the outside of the optical fiber unit.

As the insulating layer 3, a layer of polymer insulating layer is extruded outside the conductor 2, or several layers of insulating films are wrapped around the conductor 2 as the insulating layer 3.

The metal tube protective layer 4 is made of a metal tube coated on the outside of the insulating layer 3 as the protective layer 4 .

The metal monofilaments include aluminum-clad steel monofilaments, aluminum monofilaments, aluminum alloy monofilaments, galvanized steel wires, etc., and are mainly used to meet the mechanical and electrical properties of the optical fiber composite overhead ground wire.

Claims (5)

1. embedded can an ice-melt central-tube type optical fiber composite overhead ground wire, it is characterized in that: comprise fiber unit, conductor, insulating barrier, protective layer and metal monofilament; At fiber unit outer cladding one deck conductor; conductor outsourcing one layer insulating; insulating barrier outer cladding layer protective layer; the insulating barrier of protection insulated electric conductor is injury-free; using protection insulated electric conductor and fiber unit as center line; outer even stranded some metal monofilament, namely form embedded can ice-melt central-tube type optical fiber composite overhead ground wire.

2. one according to claim 1 is embedded can ice-melt central-tube type optical fiber composite overhead ground wire, it is characterized in that: described fiber unit is stainless steel tube fiber unit, be made up of stainless steel tube, optical fiber, ointment, wrap in vertical for stainless steel tube outside optical fiber, and be filled with optical fiber ointment.

3. one according to claim 1 is embedded can ice-melt central-tube type optical fiber composite overhead ground wire, it is characterized in that: described insulating barrier adopts at the outer extrusion molding one layer of polymeric insulating barrier of conductor, or at which floor insulation film of conductor outsourcing, as insulating barrier.

4. one according to claim 1 is embedded can ice-melt central-tube type optical fiber composite overhead ground wire, it is characterized in that: described protective layer adopts in the outer extrusion molding one layer of polymeric of insulating barrier or coated layer of metal, as protective layer.

5. one according to claim 1 is embedded can ice-melt central-tube type optical fiber composite overhead ground wire, it is characterized in that: described metal monofilament adopts aluminium Baogang monofilament, aluminum steel monofilament, steel wire or zinc-coated wire.