CN202677867U - Ice-melting ground line with externally wound insulating copper wire - Google Patents

Abstract

Disclosed is an ice-melting ground line, composed of at least two strands of steel wires (1) and at least two strands of insulating copper wires (2) via two-phase winding, wherein the insulating copper wires (2) are evenly wound upon the surface of the steel wires (1) in the direction same as the twisting direction of the steel wires (1); and the ground line supports the gravity with tough steel wires (1) and provides a lightning protection function. The insulating copper wires (2), with the properties of cold resistance and little resistance, ensures the input of high voltage heavy current even if the wire is covered by ice and realizes temperature rise for ice melting. The ice-melting ground line of the utility model allows other operations while melting the ice, is easy to produce, and allows direct winding. If the ice-melting ground line is used for melting ice with heavy current, the labor intensity of removing the ice can be substantially decreased. The externally wound insulating copper wires are directly contacted with the covered ice, so the generated heat is directly absorbed by the covered ice, thereby raising the ice-melting efficiency.

Description

A kind of outer ice-melting ground wire that twines insulated copper wire

Technical field

The utility model belongs to the electrical engineering equipment technical field, relates in particular to a kind of outer ice-melting ground wire that twines insulated copper wire.

Background technology

Be subjected to the impact of serious freezing disaster, the overhead ground wire fracture occurs in transmission line repeatedly, and remaining ground wire drops and causes short circuit at wire, and then causes the accident of line tripping, affects normal power supply.People need to implement deicing to overhead ground wire and process.The deicing of overhead ground wire is processed has Mechanical Method processing and heating to process two kinds, and heating wherein becomes the main flow ice-melting mode of electrical network in recent years gradually.This heating processing mode is exactly by applying the mode that large flow alternating current or large flow direct current carry out ice-melt to the wire of transmission line and ground wire.But, because the insufficient strength of overhead ground wire insulation against ground, and take segmentation and multipoint earthing mode, but thereby can apply voltage and the ice-melt distance is limited.Moreover overhead ground wire resistance is very large, so that ice melting current is difficult to reach requirement, so, the overhead ground wire temperature is difficult to raise, and also just is difficult to realize effective ice-melt.

The utility model content

The technical problems to be solved in the utility model is for existing overhead ground wire defective structurally, to design a kind of improved outer ice-melting ground wire that twines insulated copper wire, to satisfy the ice-melt demand of power transmission line overhead ground wire.

Technical solution of the present utility model is that above-mentioned a kind of outer ice-melting ground wire that twines insulated copper wire referring to Fig. 1, is formed by at least two strands of steel strand wire 1 and the 2 two-phase coilings of two strand insulation copper cash at least.Wherein said steel strand wire 1 can be common overhead ground wires, and around direction, uniform winding is on steel strand wire 1 surface by the strand identical with described steel strand wire 1 for described insulated copper wire 2.

Operation principle of the present utility model is: support the gravity of overhead ground wire with steel strand wire 1 tough and tensile load function, and exercise the lightning protection function of common overhead ground wire, conscientiously guarantee the normal operation of transmission line.Insulated copper wire 2 is the copper conductor of surface band insulating barrier, utilizes it to defy characteristic freezing, cold-resistant and that resistance is little, can guarantee still can input high-voltage great-current behind the overhead ground wire ice coverage of transmission line, realizes the intensification ice-melt.

The beneficial effects of the utility model are:

1), still keep the normal function of common ground wire during ice-melt, do not affect other operation on the ground wire;

2), make easily, need not change former ground configurations, can directly implement easily to twine;

3), high temperature resistant and do not damage insulating barrier;

4), high pressure resistant large electric current passes through, and implements great current deicing as being used for, and can reduce the labour intensity of de-icing work;

5), the insulated copper wire that twines outward directly contacts with icing, institute's caloric value is directly absorbed by icing, has improved ice-melt efficient.

Description of drawings

Fig. 1 is a kind of outer cross section structure schematic diagram that twines a specific embodiment of formula ice-melting ground wire of the utility model, is denoted as among the figure:

1-steel strand wire,

2-insulated copper wire.

Embodiment

Figure 1 shows that a kind of outer specific embodiment of ice-melting ground wire that twines insulated copper wire of the utility model.The GJ-70 type galvanized strand wires that steel strand wire 1 among this embodiment adopt the BeiJing, China extra large power equipment of gold Co., Ltd to produce, area of section 70mm ², diameter ￠ 11mm; Insulated copper wire 2 adopts the Chinese Shanghai friend to open up the cylindrical QZY type plural layers high-strength insulating copper cash that electromagnetism Co., Ltd produces.Above-mentioned steel strand wire 1 and insulated copper wire 2 are rope shape wire rod shape two-phase mixing coiling with reference to structure shown in Figure 1 and form by above-mentioned technical solution.Wherein steel strand wire 1 are totally 19 strands, and the cross section evenly distributes radially; Totally 4 strands of insulated copper wires 2, cross section also be evenly distributed on radially the cross section radially equally distributed 19 strands of steel strand wire 1 around.Around direction, uniform winding is on steel strand wire 1 surface by the strand identical with steel strand wire 1 for this insulated copper wire 2.

How the of the present utility model a kind of outer ice-melting ground wire that twines insulated copper wire of said structure through trial-production and repeatedly on probation through, all is proved to be respond well, both high pressure resistant, high temperature resistant again, and safe and reliable, reaches designing requirement fully.

Claims (1)

1. ice-melting ground wire, it is characterized in that, it is formed by at least two strands of steel strand wire (1) and two strand insulation copper cash (2) two-phase coilings at least, and around direction, uniform winding is on steel strand wire (1) surface by the strand identical with described steel strand wire (1) for wherein said insulated copper wire (2).

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