CN201107442Y

CN201107442Y - Structure tight type optical fiber composite overhead ground wire

Info

Publication number: CN201107442Y
Application number: CNU2007200466350U
Authority: CN
Inventors: 张建明; 余晓杨; 张森明
Original assignee: TONGGUANG GROUP Ltd
Current assignee: Jiangsu Tongguang Optical Fiber Cable Co., Ltd.
Priority date: 2007-09-14
Filing date: 2007-09-14
Publication date: 2008-08-27
Anticipated expiration: 2017-09-14

Abstract

A compact optical fiber composite overhead ground wire has a fiber unit as a central core line, on the periphery of which one or multiple layers of flabelliform aluminum-clad steel wires are intertwisted, water-blocking factice is filled in a fiber unit-protecting tube, and anticorrosion grease is filled or not filled in the gaps between the flabelliform aluminum-clad steel wires and between the layers of flabelliform aluminum-clad steel wires. Widely applied as an optical fiber composite overhead ground wire spanned on the tops of the poles and towers of an overhead electric transmission line, the compact optical fiber composite overhead ground wire has the advantages that structural compactness is increased from 75 percent to 95 percent or more, the outer diameter of the cable is reduced, the surface is smooth, the structure is compact, the conductive sectional area and the short-circuit current capacity are increased, the self-damping, vibration-proof and thunderstroke-proof performances are improved, wind and ice loads and load on poles and towers are reduced, and a great deal of cost invested on the construction of overhead power lines and poles and towers can be saved.

Description

A kind of structure tight type Optical Fiber composite overhead Ground Wire

Affiliated technical field

The utility model relates to a kind of Optical Fiber composite overhead Ground Wire of setting up along the electric power line pole tower top, especially a kind of structure tight type Optical Fiber composite overhead Ground Wire.

Background technology

Being erected at the Optical Fiber composite overhead Ground Wire at electric force pole tower top along power circuit, is the complex that optical cable and aerial earth wire also claim lightning conducter, and the Fibre Optical Communication Technology that it must satisfy optical cable simultaneously requires and the mechanical electric technical requirement of aerial earth wire.

In engineering design, construction and in service, the machinery of Optical Fiber composite overhead Ground Wire, electrical technology require to mainly contain the indexs such as diameter, physical strength and short-circuit current capability of cable.For building new transmission line of electricity, the shaft tower height of sag restriction when these technical indicators directly have influence on the shaft tower intensity of the quantity of the shaft tower of the span restriction that is subjected to cable, the diameter that is subjected to cable and deadweight restriction and are subjected to the overload short-circuit current of cable produces significant impact to the cost of investment of power circuit construction and shaft tower.

In old transmission line of electricity, original aerial earth wire machinery itself and electrical technology index are just not really high, add the operation that original electric force pole tower has passed through the several years, and its safety coefficient is existing to descend.When these old power circuits are communicated transformation, often require the diameter of Optical Fiber composite overhead Ground Wire little, it is high that intensity is wanted; Also, require to have bigger short-circuit current capability because along with the increase of transforming the back transmission line capability.If Optical Fiber composite overhead Ground Wire can not satisfy above-mentioned requirements simultaneously, just must rebuild shaft tower or strengthening reconstruction shaft tower, improvement cost is increased severely.

To justify the stranded conventional fiber composite overhead ground wire of single line, structure intermediate gap amount is big at present, and the structure tight ness rating is about 75%, and when satisfying the technical requirement of mechanical property, cable outer diameter, the electric property of circuit just is difficult to satisfy technical requirement.Satisfy the electric property requirement of circuit, will increase the external diameter of optical cable, increase the weight of optical cable thereupon, original shaft tower holds the physical strength that can't stand optical cable and the weight of optical cable.So, in old power circuit is transformed, be difficult to adopt conventional at present Optical Fiber composite overhead Ground Wire.

Summary of the invention

Low in order to overcome existing conventional fiber composite overhead ground wire density of texture, can not satisfy the deficiency that overhead power line requires Optical Fiber composite overhead Ground Wire physical strength and electric property in transforming simultaneously, the utility model provides a kind of structure tight type Optical Fiber composite overhead Ground Wire, make its structure tight ness rating by about 75% bring up to 〉=95%, the cable reduced diameter, increase substantially physical strength and electric property, adapt to harsh weather environment, cross over the needs of environment and extra-high voltage environmental construction overhead power line greatly.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of structure tight type Optical Fiber composite overhead Ground Wire, by fiber unit, fan-shaped aluminium Baogang molded lines, greasy for preventing water and anticorrosion grease are formed, it is characterized in that inserting the fiber unit that protection tube constitutes by optical fiber is central core, at its periphery concentric stranding shape of cross section is that fan-shaped aluminium Baogang molded lines is formed, above-mentioned fan-shaped aluminium Baogang molded lines is to be that the steel wire of circle or fan type is the load heart yearn with the shape of cross section, the horizontal face of wearing of outsourcing is that fan-shaped conductive aluminum covering constitutes, the fan-shaped left and right sides adjacent edge that is shaped as of xsect of every fan-shaped aluminium Baogang molded lines is a radial line, inside and outside perimeter line is the concentric arcs line, shape of cross section after the fan-shaped aluminium of each layer Baogang molded lines is stranded is the annular of an integral body, and its radical that contains fan-shaped aluminium Baogang molded lines is 〉=3 positive integers; The number of plies of this fan-shaped aluminium Baogang molded lines is individual layer, bilayer or multilayer, and the strand of the adjacent inside and outside twisted wire layer of two-layer above fan-shaped aluminium Baogang molded lines is on the contrary, and outermost twisted wire layer is a dextrad; The protection tube of above-mentioned formation fiber unit is aluminium, aluminium alloy, stainless steel or other suitable metal pipe material, also can be tygon, vinyl chloride, poly-fluorine alkene and so on nonmetal tubing or above-mentioned multiple metal, nonmetal and metal and the nonmetal composite material pipe that combines; Above-mentioned fiber unit protection casing pack greasy for preventing water, the line of fan-shaped aluminium Baogang molded lines and line, layer and layer between the clearance filled or anticorrosion grease of not filling.

The beneficial effects of the utility model are, because the fan-shaped aluminium of employing Baogang molded lines is as the strand layer line, the structure tight ness rating by about 75% bring up to 〉=95%, under the prerequisite that does not increase the cable overall diameter, conductive section and short-circuit current capability have been increased, surfacing, structure is tight, improved self-damping, vibrationproof, anti-lightning strike performance, reduced to the load of wind and ice with to the load of shaft tower, can adapt to harsh weather environment, the big needs of crossing over environment and extra-high voltage environment fiber plant composite overhead ground wire, a large amount of costs of investment of saving power circuit construction and shaft tower, effect is remarkable.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1-Fig. 3 is the utility model cross-sectional view that is made of the fan-shaped aluminium of individual layer Baogang's molded lines and fiber unit.

Fig. 4-Fig. 7 is the utility model cross-sectional view that part is made of double layer sector aluminium Baogang's molded lines and fiber unit.

In Fig. 1-Fig. 7: 1. constitute the optical fiber in the fiber unit; 2. the outsourcing protection tube of fiber unit; 3. the load steel core wire of fan-shaped aluminium Baogang molded lines, its shape of cross section have circular and fan-shaped two kinds; 4. the fan-shaped conductive aluminum covering of fan-shaped aluminium Baogang molded lines.

When their diameter was identical, Fig. 1 structure had maximum relatively physical strength, and Fig. 2 structure has maximum relatively short-circuit current thermal capacity, and the physical strength of Fig. 3 structure and short-circuit current thermal capacity then are between the two.

In Fig. 4-Fig. 7, form by the aluminium Baogang molded lines of same pattern with the hank layer, also can form by the aluminium Baogang molded lines of different types.Also can be varied to more bilayer and multilayer twisted wire structure according to Fig. 1 and Fig. 2.

Embodiment

In Fig. 1～Fig. 7, a kind of structure tight type Optical Fiber composite overhead Ground Wire, form by fiber unit and fan-shaped aluminium Baogang molded lines, it is characterized in that the fiber unit with circle is a central core, at the fan-shaped aluminium of its periphery concentric stranding Baogang molded lines, this aluminium Baogang molded lines is circular with the shape of cross section or fan-shaped steel wire is the load heart yearn, the outsourcing xsect is fan-shaped conductive aluminum covering, single fan-shaped aluminium Baogang molded lines shape of cross section is a radial line for its left and right sides adjacent edge, interior neighboring is the concentric arcs line, shape of cross section after the fan-shaped aluminium of each layer Baogang molded lines is stranded is the annular of an integral body, and the radical that wherein contains fan-shaped aluminium Baogang molded lines is 〉=3 positive integer; The strand number of plies of fan-shaped aluminium Baogang molded lines is individual layer, bilayer or multilayer, and the strand of the adjacent inside and outside twisted wire layer of two-layer above fan-shaped aluminium Baogang molded lines stranded layer is on the contrary, and the strand of outermost layer twisted wire is to being dextrad; The protection tube of above-mentioned formation fiber unit is aluminium, aluminium alloy, stainless steel or other suitable single-layer metal tubing, also can be tygon, vinyl chloride, poly-fluorine alkene and so on nonmetal tubing of individual layer or above-mentioned multiple metal, nonmetal and metal and the nonmetal multilayer materials tubing that combines; Above-mentioned fiber unit protection casing pack greasy for preventing water, the line of fan-shaped aluminium Baogang molded lines and line, layer and layer between clearance filled or do not fill anticorrosion grease.

Claims

1, a kind of structure tight type Optical Fiber composite overhead Ground Wire; form by fiber unit, fan-shaped aluminium Baogang molded lines, greasy for preventing water and anticorrosion grease; it is characterized in that the fiber unit that constitutes with optical fiber (1) outsourcing protection tube (2) is a central core, is that fan-shaped aluminium Baogang molded lines is formed at its periphery concentric stranding xsect.

2, structure tight type Optical Fiber composite overhead Ground Wire according to claim 1, it is characterized in that fan-shaped aluminium Baogang molded lines is that circle or scallop wire (3) are the load heart yearn with the xsect, the outsourcing xsect is that fan-shaped conductive aluminum covering (4) constitutes, this fan-shaped left and right sides adjacent edge is a radial line, fan-shaped interior neighboring is the concentric arcs line, the as a whole annular of shape of cross section after every layer of fan-shaped aluminium Baogang molded lines is stranded, its radical that contains fan-shaped aluminium Baogang molded lines is 〉=3 positive integer.

3, structure tight type Optical Fiber composite overhead Ground Wire according to claim 1, the number of plies that it is characterized in that fan-shaped aluminum-cladding stranded wire is individual layer, bilayer or multilayer, the strand of the adjacent inside and outside twisted wire layer of two-layer and two-layer above fan-shaped aluminum-cladding stranded wire is on the contrary, and the strand of outermost layer twisted wire is to being dextrad.

4, tight type Optical Fiber composite overhead Ground Wire according to claim 1; the protection tube that it is characterized in that constituting fiber unit is aluminium, aluminium alloy, stainless steel or other suitable single-layer metal tubing, also can be tygon, vinyl chloride, poly-fluorine alkene and so on nonmetal tubing of individual layer or above-mentioned multiple metal, nonmetal and metal and the nonmetal multilayer materials tubing that combines.

5, according to claim 1 or 4 described tight type Optical Fiber composite overhead Ground Wire, it is characterized in that fiber unit protection casing pack greasy for preventing water, the line of fan-shaped aluminium Baogang molded lines and line, layer and layer between secretion or the anticorrosion grease of not filling.