CN204680438U - Large-capacity power transfer wire - Google Patents
Large-capacity power transfer wire Download PDFInfo
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- CN204680438U CN204680438U CN201520416990.7U CN201520416990U CN204680438U CN 204680438 U CN204680438 U CN 204680438U CN 201520416990 U CN201520416990 U CN 201520416990U CN 204680438 U CN204680438 U CN 204680438U
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- trapezoidal
- conductive layer
- single line
- aluminium single
- trapezoidal conductive
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/008—Power cables for overhead application
Abstract
The utility model discloses a kind of large-capacity power transfer wire, comprise the tension unit that is positioned at center and stranded in the first trapezoidal conductive layer of tension unit outer surface successively, second trapezoidal conductive layer, 3rd trapezoidal conductive layer and the 4th trapezoidal conductive layer, described 3rd trapezoidal conductive layer is positioned at the second trapezoidal conductive layer outer surface, described 4th trapezoidal conductive layer is positioned at the 3rd trapezoidal conductive layer outer surface, first trapezoidal aluminium single line, in the second trapezoidal aluminium single line of trapezoidal aluminium single line the 3rd and the 4th trapezoidal aluminium single line, all there is the copper conductor that a cross section is circle, the sectional area of this copper conductor is 35 ~ 45% of the sectional area of respective trapezoidal aluminium single line.The utility model reduces the effect of the AC impedance that high order harmonic component produces, and under the prerequisite not improving cross section, improves transmission line capability, wire is extremely tight, space availability ratio up to 93%, smooth surface, do not have concavo-convex, make wire windward surface area greatly reduce, produce reduce wind effects.
Description
Technical field
The utility model relates to a kind of transmission pressure, particularly relates to a kind of used for transmission linely to fall blast wire.
Background technology
Chinese national economy continues rapid growth to the demand of electric power in continuous increase, according to the planning of Guo Wang Construction Company Limited, will focus the consruction in recent years ± 800kV and above extra high voltage direct current transmission line.Transmission line construction, need more large-section lead but do not wish wire by wind impact strengthen.We design existing large cross section for this reason, have the extraordinary electric power conveying electricity wire reducing windage.Traditional wire, its single line structure is made up of circular single line, very large by high altitude wind effect after single line is stranded, causes wire to be subject to very large wind-force effect, overhead line structures are also subject to great wind-force effect, for the wire that cross section is little, its effect performance is not clearly, but for the wire of cross section more than 1000, due to this defect, cause the requirement that can not meet the transmission of modern power network large-capacity power, therefore need to develop a kind of novel wire, to meet the needs of China's power industry development.
Summary of the invention
The utility model provides a kind of large-capacity power transfer wire, this large-capacity power transfer wire reduces the effect of the AC impedance that high order harmonic component produces, under the prerequisite not improving cross section, improve transmission line capability, wire is extremely tight, and space availability ratio is up to 93%, smooth surface, do not have concavo-convex, make wire windward surface area greatly reduce, produce reduce wind effects.
For achieving the above object, the technical solution adopted in the utility model is: a kind of large-capacity power transfer wire, comprise the tension unit that is positioned at center and stranded the first trapezoidal conductive layer in tension unit outer surface, the second trapezoidal conductive layer, the 3rd trapezoidal conductive layer and the 4th trapezoidal conductive layer successively, described 3rd trapezoidal conductive layer is positioned at the second trapezoidal conductive layer outer surface, and described 4th trapezoidal conductive layer is positioned at the 3rd trapezoidal conductive layer outer surface;
Described tension unit is made up of 1 first circular steel twisted wire, 6 second circular steel twisted wires and 12 the 3rd circular steel twisted wires, 6 second circular steel twisted wires are stranded forms middle tensile layer in the first circular steel twisted wire outer surface, and 12 the 3rd circular steel twisted wires are stranded forms outer tensile layer in middle tensile layer outer surface;
To be that the first trapezoidal aluminium single line of isosceles trapezoid is stranded by 9 ~ 11 cross sections form described first trapezoidal conductive layer, and to be that the second trapezoidal aluminium single line of isosceles trapezoid is stranded by 14 ~ 16 cross sections form described second trapezoidal conductive layer;
To be that the 3rd trapezoidal aluminium single line of isosceles trapezoid is stranded by 19 ~ 21 cross sections form described 3rd trapezoidal conductive layer, to be that the 4th trapezoidal aluminium single line of isosceles trapezoid is stranded by 24 ~ 26 cross sections form 4th trapezoidal conductive layer, all having a cross section in described first trapezoidal aluminium single line, the second trapezoidal aluminium single line of trapezoidal aluminium single line the 3rd and the 4th trapezoidal aluminium single line is circular copper conductor, and the sectional area of this copper conductor is 35 ~ 45% of the sectional area of respective trapezoidal aluminium single line.
The technical scheme improved further in technique scheme is as follows:
1., in such scheme, the area of section of described tension unit accounts for the total cross-sectional area 9 ~ 12% of falling blast wire.
2. in such scheme, in described first trapezoidal conductive layer, the first trapezoidal aluminium single line direction of lay is dextrad, and in described second trapezoidal conductive layer, the second trapezoidal aluminium single line direction of lay is left-hand.
3. in such scheme, in described 3rd trapezoidal conductive layer, the 3rd trapezoidal aluminium single line direction of lay is dextrad, and in described 4th trapezoidal conductive layer, the 4th trapezoidal aluminium single line direction of lay is left-hand.
Because technique scheme is used, the utility model compared with prior art has following advantages:
1. the utility model large-capacity power transfer wire, its the 3rd trapezoidal conductive layer is positioned at the second trapezoidal conductive layer outer surface, described 4th trapezoidal conductive layer is positioned at the 3rd trapezoidal conductive layer outer surface, first trapezoidal aluminium single line, in the second trapezoidal aluminium single line of trapezoidal aluminium single line the 3rd and the 4th trapezoidal aluminium single line, all there is the copper conductor that a cross section is circle, the sectional area of this copper conductor is 35 ~ 45% of the sectional area of respective trapezoidal aluminium single line, circular copper conductor is provided with in the trapezoidal aluminium single line that cross section is isosceles trapezoid, reduce the effect of the AC impedance (resistance) that high order harmonic component produces, under the prerequisite not improving cross section, improve transmission line capability, original corridor does not change steel tower substantially, reach increase-volume 68%, ampacity is large, quality is light, sag characteristic is good, extend the useful life of circuit, meet the requirement of modern power network large-capacity power transmission.
2. the utility model large-capacity power transfer wire, it comprises the tension unit that is positioned at center and stranded the first trapezoidal conductive layer in tension unit outer surface, the second trapezoidal conductive layer, the 3rd trapezoidal conductive layer and the 4th trapezoidal conductive layer successively, to be that circular the first trapezoidal aluminium single line is stranded by 9 ~ 11 cross sections form first trapezoidal conductive layer, and to be that circular the second trapezoidal aluminium single line is stranded by 14 ~ 16 cross sections form described second trapezoidal conductive layer; To be that the 3rd trapezoidal aluminium single line of isosceles trapezoid is stranded by 19 ~ 21 cross sections form described 3rd trapezoidal conductive layer, to be that the 4th trapezoidal aluminium single line of isosceles trapezoid is stranded by 24 ~ 26 cross sections form 4th trapezoidal conductive layer, the wire that design is produced is extremely tight, space availability ratio is up to 93%, smooth surface, do not have concavo-convex, make wire windward surface area greatly reduce, produce reduce wind effects.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model large-capacity power transfer wire structural representation.
In above accompanying drawing: 1, tension unit; 2, the first trapezoidal conductive layer; 21, the first trapezoidal aluminium single line; 3, the second trapezoidal conductive layer; 31, the second trapezoidal aluminium single line; 4, the 3rd trapezoidal conductive layer; 41, the 3rd trapezoidal aluminium single line; 5, the 4th trapezoidal conductive layer; 51, the 4th trapezoidal aluminium single line; 6, the first circular steel twisted wire; 7, middle tensile layer; 71, the second circular steel twisted wire; 8, outer tensile layer; 81, the 3rd circular steel twisted wire; 9, copper conductor.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment 1: a kind of large-capacity power transfer wire, comprise the tension unit 1 that is positioned at center and the stranded trapezoidal conductive layer 3 of the first trapezoidal conductive layer 2, second in tension unit 1 outer surface, the 3rd trapezoidal conductive layer 4 and the 4th trapezoidal conductive layer 5 successively, described 3rd trapezoidal conductive layer 4 is positioned at the second trapezoidal conductive layer 3 outer surface, and described 4th trapezoidal conductive layer 5 is positioned at the 3rd trapezoidal conductive layer 4 outer surface;
Described tension unit 1 is made up of 1 first circular steel twisted wire, 6,6 second circular steel twisted wires, 71 and 12 the 3rd circular steel twisted wires 81,6 second circular steel twisted wires 71 are stranded forms in the first circular steel twisted wire 6 outer surface that middle tensile layer 7,12 the 3rd circular steel twisted wires 81 are stranded forms outer tensile layer 8 in middle tensile layer 7 outer surface;
To be that the first trapezoidal aluminium single line 21 of isosceles trapezoid is stranded by 9 ~ 11 cross sections form described first trapezoidal conductive layer 2, and to be that the second trapezoidal aluminium single line 31 of isosceles trapezoid is stranded by 14 ~ 16 cross sections form described second trapezoidal conductive layer 3;
To be that the 3rd trapezoidal aluminium single line 41 of isosceles trapezoid is stranded by 19 ~ 21 cross sections form described 3rd trapezoidal conductive layer 4, to be that the 4th trapezoidal aluminium single line 51 of isosceles trapezoid is stranded by 24 ~ 26 cross sections form 4th trapezoidal conductive layer 5, all have the copper conductor 9 that a cross section is circle in described first trapezoidal aluminium single line 21, the second trapezoidal aluminium single line 41 of trapezoidal aluminium single line 31 the 3rd and the 4th trapezoidal aluminium single line 51, the sectional area of this copper conductor 9 is 35 ~ 45% of the sectional area of respective trapezoidal aluminium single line.
The area of section of above-mentioned tension unit 1 accounts for the total cross-sectional area 11% of falling blast wire.
In above-mentioned first trapezoidal conductive layer 2, the first trapezoidal aluminium single line 21 direction of lay is dextrad, and in described second trapezoidal conductive layer 3, the second trapezoidal aluminium single line 31 direction of lay is left-hand.
Embodiment 2: a kind of large-capacity power transfer wire, comprise the tension unit 1 that is positioned at center and the stranded trapezoidal conductive layer 3 of the first trapezoidal conductive layer 2, second in tension unit 1 outer surface, the 3rd trapezoidal conductive layer 4 and the 4th trapezoidal conductive layer 5 successively, described 3rd trapezoidal conductive layer 4 is positioned at the second trapezoidal conductive layer 3 outer surface, and described 4th trapezoidal conductive layer 5 is positioned at the 3rd trapezoidal conductive layer 4 outer surface;
Described tension unit 1 is made up of 1 first circular steel twisted wire, 6,6 second circular steel twisted wires, 71 and 12 the 3rd circular steel twisted wires 81,6 second circular steel twisted wires 71 are stranded forms in the first circular steel twisted wire 6 outer surface that middle tensile layer 7,12 the 3rd circular steel twisted wires 81 are stranded forms outer tensile layer 8 in middle tensile layer 7 outer surface;
To be that the first trapezoidal aluminium single line 21 of isosceles trapezoid is stranded by 9 ~ 11 cross sections form described first trapezoidal conductive layer 2, and to be that the second trapezoidal aluminium single line 31 of isosceles trapezoid is stranded by 14 ~ 16 cross sections form described second trapezoidal conductive layer 3;
To be that the 3rd trapezoidal aluminium single line 41 of isosceles trapezoid is stranded by 19 ~ 21 cross sections form described 3rd trapezoidal conductive layer 4, to be that the 4th trapezoidal aluminium single line 51 of isosceles trapezoid is stranded by 24 ~ 26 cross sections form 4th trapezoidal conductive layer 5, all have the copper conductor 9 that a cross section is circle in described first trapezoidal aluminium single line 21, the second trapezoidal aluminium single line 41 of trapezoidal aluminium single line 31 the 3rd and the 4th trapezoidal aluminium single line 51, the sectional area of this copper conductor 9 is 35 ~ 45% of the sectional area of respective trapezoidal aluminium single line.
The area of section of above-mentioned tension unit 1 accounts for the total cross-sectional area 9% of falling blast wire.
In above-mentioned 3rd trapezoidal conductive layer 4, the 3rd trapezoidal aluminium single line 41 direction of lay is dextrad, and in described 4th trapezoidal conductive layer 5, the 4th trapezoidal aluminium single line 51 direction of lay is left-hand.
When adopting above-mentioned large-capacity power transfer wire, it reduces the effect of the AC impedance (resistance) that high order harmonic component produces, under the prerequisite not improving cross section, improve transmission line capability, original corridor does not change steel tower substantially, reaches increase-volume 68%, ampacity is large, quality is light, sag characteristic is good, extend the useful life of circuit, meet the requirement of modern power network large-capacity power transmission; Secondly, the wire that design is produced is extremely tight, and space availability ratio is up to 93%, and smooth surface, does not have concavo-convex, make wire windward surface area greatly reduce, produce and reduce wind effects.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection range of the present utility model.
Claims (4)
1. a large-capacity power transfer wire, it is characterized in that: comprise the tension unit (1) that is positioned at center and stranded the first trapezoidal conductive layer (2) in tension unit (1) outer surface, the second trapezoidal conductive layer (3), the 3rd trapezoidal conductive layer (4) and the 4th trapezoidal conductive layer (5) successively, described 3rd trapezoidal conductive layer (4) is positioned at the second trapezoidal conductive layer (3) outer surface, and described 4th trapezoidal conductive layer (5) is positioned at the 3rd trapezoidal conductive layer (4) outer surface;
Described tension unit (1) is made up of 1 first circular steel twisted wire (6), 6 second circular steel twisted wires (71) and 12 the 3rd circular steel twisted wires (81), 6 second circular steel twisted wires (71) are stranded forms middle tensile layer (7) in the first circular steel twisted wire (6) outer surface, and 12 the 3rd circular steel twisted wires (81) are stranded forms outer tensile layer (8) in middle tensile layer (7) outer surface;
To be that the first trapezoidal aluminium single line (21) of isosceles trapezoid is stranded by 9 ~ 11 cross sections form described first trapezoidal conductive layer (2), and to be that the second trapezoidal aluminium single line (31) of isosceles trapezoid is stranded by 14 ~ 16 cross sections form described second trapezoidal conductive layer (3);
To be that the 3rd trapezoidal aluminium single line (41) of isosceles trapezoid is stranded by 19 ~ 21 cross sections form described 3rd trapezoidal conductive layer (4), to be that the 4th trapezoidal aluminium single line (51) of isosceles trapezoid is stranded by 24 ~ 26 cross sections form 4th trapezoidal conductive layer (5), all having a cross section in described first trapezoidal aluminium single line (21), the second trapezoidal trapezoidal aluminium single line of aluminium single line (31) the 3rd (41) and the 4th trapezoidal aluminium single line (51) is circular copper conductor (9), and the sectional area of this copper conductor (9) is 35 ~ 45% of the sectional area of respective trapezoidal aluminium single line.
2. large-capacity power transfer wire according to claim 1, is characterized in that: the area of section of described tension unit (1) accounts for the total cross-sectional area 9 ~ 12% of falling blast wire.
3. large-capacity power transfer wire according to claim 1, it is characterized in that: in described first trapezoidal conductive layer (2), the first trapezoidal aluminium single line (21) direction of lay is dextrad, in described second trapezoidal conductive layer (3), the second trapezoidal aluminium single line (31) direction of lay is left-hand.
4. large-capacity power transfer wire according to claim 1, it is characterized in that: in described 3rd trapezoidal conductive layer (4), the 3rd trapezoidal aluminium single line (41) direction of lay is dextrad, in described 4th trapezoidal conductive layer (5), the 4th trapezoidal aluminium single line (51) direction of lay is left-hand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520416990.7U CN204680438U (en) | 2015-06-17 | 2015-06-17 | Large-capacity power transfer wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520416990.7U CN204680438U (en) | 2015-06-17 | 2015-06-17 | Large-capacity power transfer wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204680438U true CN204680438U (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520416990.7U Active CN204680438U (en) | 2015-06-17 | 2015-06-17 | Large-capacity power transfer wire |
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|---|---|
| CN (1) | CN204680438U (en) |
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2015
- 2015-06-17 CN CN201520416990.7U patent/CN204680438U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |