CN204303437U - Low-loss overhead power transmission line - Google Patents
Low-loss overhead power transmission line Download PDFInfo
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- CN204303437U CN204303437U CN201420801462.9U CN201420801462U CN204303437U CN 204303437 U CN204303437 U CN 204303437U CN 201420801462 U CN201420801462 U CN 201420801462U CN 204303437 U CN204303437 U CN 204303437U
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Abstract
The utility model discloses a kind of low-loss overhead power transmission line, comprises the stress unit that is positioned at center and stranded the first aluminium alloy conductive layer in stress unit outer surface, the second aluminium alloy conductive layer successively; Described second aluminium alloy conductive layer outer surface is stranded successively aluminium conductor coating layer, and to be that " Z " font aluminium alloy conductor of " Z " font is stranded by 19 ~ 21 cross sections form aluminium conductor coating layer; Described stress unit comprises the first carbon fiber single line of being positioned at center and stranded in the first carbon fiber single line outer surface 6 second carbon fiber single lines, and described first carbon fiber single line and the second carbon fiber single line outer surface are all coated with aluminium lamination; Described first carbon fiber single line, the second carbon fiber single line form by some carbon fibre precursors are stranded; Polyester gluing filling part is filled with in aluminium lamination and between some carbon fibre precursors.The utility model close structure, improves the electric conductivity of cable, bending property and decay resistance, also improves the Anti-ice-and-snow ability of wire significantly.
Description
Technical field
The utility model relates to a kind of electric power transmission lead, particularly relates to a kind of low-loss overhead power transmission line.
Background technology
Chinese national economy continues the demand of rapid growth to electric power in continuous increase, according to the planning of Guo Wang Construction Company Limited, will focus the consruction on 1100kV UHV transmission line in recent years.Transmission line construction, needs more large-section lead but do not wish that wire diameter is too large.Traverse design will consider factors, particularly the transmission capacity of wire and economic current density, corona critical voltage, mechanical strength etc.On the one hand, in the area that circuit is narrow, only need the wire changing close cross section specification, substantially do not need to change steel tower and can meet intensity and wire requirement over the ground, but in the application along with the rising of conductor temperature, its sag must increase.And original shaft tower can not have very large remaining to meet the recruitment of its sag, therefore to reach that on original corridor, do not change steel tower increase-volume 40 ~ 50% be inconvenient.
On the other hand, existing aluminum conductor uses galvanized strand wires as stress unit, and this structure employs more than 100 year, is traditional structure.But galvanized strand wires intensity is not high, corrosion resistance is not strong, shortens wire whole service life.The eighties, occur aluminium Baogang single line, at that time because of complex process, be difficult to promote, now, use at large cross line, its corrosion resistance is strengthened greatly, but strength ratio steel strand wire reduce.
Summary of the invention
The utility model provides a kind of low-loss overhead power transmission line, and this low-loss overhead power transmission line close structure, improves the electric conductivity of cable, bending property and decay resistance, also improves the Anti-ice-and-snow ability of wire significantly.
For achieving the above object, the technical solution adopted in the utility model is: a kind of low-loss overhead power transmission line, comprises the stress unit that is positioned at center and stranded the first aluminium alloy conductive layer in stress unit outer surface, the second aluminium alloy conductive layer successively;
Described first aluminium alloy conductive layer forms by 10 ~ 14 first aluminium single lines are stranded, and described second aluminium alloy conductive layer forms by 16 ~ 20 second aluminium single lines are stranded;
Described second aluminium alloy conductive layer outer surface is stranded successively aluminium conductor coating layer, and to be that " Z " font aluminium alloy conductor of " Z " font is stranded by 19 ~ 21 cross sections form aluminium conductor coating layer;
Described stress unit comprises the first carbon fiber single line of being positioned at center and stranded in the first carbon fiber single line outer surface 6 second carbon fiber single lines, described first carbon fiber single line and the second carbon fiber single line outer surface are all coated with aluminium lamination, and the thickness of described aluminium lamination is 0.1 ~ 0.4mm;
Described first carbon fiber single line, the second carbon fiber single line form by some carbon fibre precursors are stranded; Polyester gluing filling part is filled with in aluminium lamination and between some carbon fibre precursors.
The technical scheme improved further in technique scheme is as follows:
1., in such scheme, the number of described carbon fibre precursor is at least 300.
2., in such scheme, the thickness of described aluminium lamination is 0.1 ~ 0.4mm.
Because technique scheme is used, the utility model compared with prior art has following advantages:
1. the utility model low-loss overhead power transmission line, first aluminium alloy conductive layer forms by 10 ~ 14 first aluminium single lines are stranded, described second aluminium alloy conductive layer forms by 16 ~ 20 second aluminium single lines are stranded, second aluminium alloy conductive layer outer surface is stranded successively aluminium conductor coating layer, its close structure, bending radius decline most 6 times of cable sizes, reduce the space of mounting arrangement, reduce installation cost, be easier to lay, press that coefficient is high improves ampacity under same uiform section, also can effectively prevent rainwater etc. from entering wire inside, reduce or avoid conductive line surfaces ponding and freeze, improve the Anti-ice-and-snow ability of wire significantly, aluminium conductor coating layer forms by 19 ~ 21 " Z " font aluminium alloy conductors are stranded the electric conductivity also improving cable, bending property and decay resistance, decrease cable caloric value, it widely uses and significantly can improve whole transmission system reliability of operation and fail safe, have broad application prospects, be particularly useful for needing to reconstruct increase-volume, the transmission line of dilatation.
2. the utility model low-loss overhead power transmission line, its aluminium bag carbon fiber line diameter is little, convenient is used for lay configuration, carbon fiber wire adopts lay configuration, bending property and excellent, avoid the bending problem that fractures of carbon fiber wire completely, individual carbon fibers precursor ruptures once in a while does not affect aluminium bag carbon fiber single line performance, and the defect that single aluminium bag carbon fiber single line is little not will be a greater impact to the performance of the stranded strengthening core stress unit of whole aluminium bag carbon fiber, and transmission line coefficient of safety is improved, secondly, its aluminium coating thickness can be accomplished very thin, thus make aluminium bag carbon fiber line diameter to accomplish 2mm ~ 4mm, similar with zinc-coated wire, the stress unit of wire is made in many stranded modes, change the single of present carbon fiber rod, the present situation of diameter 5mm ~ 12mm, little aluminium bag carbon fiber line diameter and Duo Gen lay configuration make the stress unit of wire (aluminium bag carbon fiber twisted cores) bending diameter greatly reduce, avoid current individual carbon fibers diameter of mandrel large, bending stress is large, require sabot, construction bending diameter is very large, cause unfolding conductor, jointing requirements is high, frequently occur that plug crimping construction wrong hidden danger and the wire that arrives go offline transmission line power-off fault.
3. the utility model low-loss overhead power transmission line, the carbon fiber generation of aluminium coating layer to the inside is well coated presses effect, more than 100 carbon fibre precursor of the inside adopts stranded mode of tiing knots, such structure makes individual carbon fibers silk fracture joint not too affect carbon fiber wire overall performance, pull-off force is high, extends the useful life of circuit; Secondly, on large span high pressure overhead power line, excellent corrosion resistance, lightweight, pull-off force is high, conductance is high and high performance-price ratio, original corridor does not change steel tower substantially, reach increase-volume 60%, ampacity is large, quality is light, sag characteristic is good, extend the useful life of circuit.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model low-loss overhead power transmission line structural representation;
Accompanying drawing 2 is stress unit structural representation in accompanying drawing 1.
In above accompanying drawing: 1, stress unit; 2, the first aluminium alloy conductive layer; 21, the first aluminium single line; 3, the second aluminium alloy conductive layer; 31, the second aluminium single line; 4, aluminium conductor coating layer; 41, " Z " font aluminium alloy conductor; 5, the first carbon fiber single line; 6, the second carbon fiber single line; 7, aluminium lamination; 8, carbon fibre precursor; 9, polyester gluing filling part.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment 1: a kind of low-loss overhead power transmission line, comprises the stress unit 1 that is positioned at center and stranded in the first aluminium alloy conductive layer 2, second aluminium alloy conductive layer 3 of stress unit 1 outer surface successively;
Described first aluminium alloy conductive layer 2 forms by 11 first aluminium single lines 21 are stranded, and described second aluminium alloy conductive layer 3 forms by 18 second aluminium single lines 31 are stranded;
Described second aluminium alloy conductive layer 3 outer surface is stranded successively aluminium conductor coating layer 4, and to be that " Z " font aluminium alloy conductor 41 of " Z " font is stranded by 21 cross sections form aluminium conductor coating layer 4;
Described stress unit 1 comprises the first carbon fiber single line 5 of being positioned at center and stranded in the first carbon fiber single line 5 outer surface 6 second carbon fiber single lines 6, described first carbon fiber single line 5 and the second carbon fiber single line 6 outer surface are all coated with aluminium lamination 7, and the thickness of described aluminium lamination 7 is 0.1 ~ 0.4mm;
Described first carbon fiber single line 5, second carbon fiber single line 6 forms by some carbon fibre precursors 8 are stranded; Polyester gluing filling part 9 is filled with in aluminium lamination 7 and between some carbon fibre precursors 8.
The number of above-mentioned carbon fibre precursor 8 is at least 300.
The thickness of above-mentioned aluminium lamination 7 is 0.25mm.
Embodiment 2: a kind of low-loss overhead power transmission line, comprises the stress unit 1 that is positioned at center and stranded in the first aluminium alloy conductive layer 2, second aluminium alloy conductive layer 3 of stress unit 1 outer surface successively;
Described first aluminium alloy conductive layer 2 forms by 12 first aluminium single lines 21 are stranded, and described second aluminium alloy conductive layer 3 forms by 18 second aluminium single lines 31 are stranded;
Described second aluminium alloy conductive layer 3 outer surface is stranded successively aluminium conductor coating layer 4, and to be that " Z " font aluminium alloy conductor 41 of " Z " font is stranded by 20 cross sections form aluminium conductor coating layer 4;
Described stress unit 1 comprises the first carbon fiber single line 5 of being positioned at center and stranded in the first carbon fiber single line 5 outer surface 6 second carbon fiber single lines 6, described first carbon fiber single line 5 and the second carbon fiber single line 6 outer surface are all coated with aluminium lamination 7, and the thickness of described aluminium lamination 7 is 0.1 ~ 0.4mm;
Described first carbon fiber single line 5, second carbon fiber single line 6 forms by some carbon fibre precursors 8 are stranded; Polyester gluing filling part 9 is filled with in aluminium lamination 7 and between some carbon fibre precursors 8.
The thickness of above-mentioned aluminium lamination 7 is 0.15mm.
When adopting above-mentioned low-loss overhead power transmission line, its close structure, bending radius decline most 6 times of cable sizes, reduce the space of mounting arrangement, reduce installation cost, be easier to lay, press that coefficient is high improves ampacity under same uiform section, also can effectively prevent rainwater etc. from entering wire inside, reduce or avoid conductive line surfaces ponding and freeze, improve the Anti-ice-and-snow ability of wire significantly, it widely uses and significantly can improve whole transmission system reliability of operation and fail safe, have broad application prospects, be particularly useful for needing to reconstruct increase-volume, the transmission line of dilatation, secondly, its aluminium coating thickness can be accomplished very thin, thus make aluminium bag carbon fiber line diameter to accomplish 2mm ~ 4mm, similar with zinc-coated wire, the stress unit of wire is made in many stranded modes, change the single of present carbon fiber rod, the present situation of diameter 5mm ~ 12mm, little aluminium bag carbon fiber line diameter and Duo Gen lay configuration make the stress unit of wire (aluminium bag carbon fiber twisted cores) bending diameter greatly reduce, avoid current individual carbon fibers diameter of mandrel large, bending stress is large, require sabot, construction bending diameter is very large, cause unfolding conductor, jointing requirements is high, frequently occur that plug crimping construction wrong hidden danger and the wire that arrives go offline transmission line power-off fault, again, the carbon fiber generation of aluminium coating layer to the inside is well coated presses effect, more than 100 carbon fibre precursor of the inside adopts stranded mode of tiing knots, such structure makes individual carbon fibers silk fracture joint not too affect carbon fiber wire overall performance, pull-off force is high, extends the useful life of circuit.
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 (3)
1. a low-loss overhead power transmission line, is characterized in that: comprise the stress unit (1) that is positioned at center and stranded the first aluminium alloy conductive layer (2) in stress unit (1) outer surface, the second aluminium alloy conductive layer (3) successively;
Described first aluminium alloy conductive layer (2) forms by 10 ~ 14 first aluminium single lines (21) are stranded, and described second aluminium alloy conductive layer (3) forms by 16 ~ 20 second aluminium single lines (31) are stranded;
Described second aluminium alloy conductive layer (3) outer surface is stranded successively aluminium conductor coating layer (4), and to be that " Z " font aluminium alloy conductor (41) of " Z " font is stranded by 19 ~ 21 cross sections form aluminium conductor coating layer (4);
Described stress unit (1) comprises the first carbon fiber single line (5) of being positioned at center and stranded in the first carbon fiber single line (5) outer surface 6 second carbon fiber single lines (6), described first carbon fiber single line (5) and the second carbon fiber single line (6) outer surface are all coated with aluminium lamination (7), and the thickness of described aluminium lamination (7) is 0.1 ~ 0.4mm;
Described first carbon fiber single line (5), the second carbon fiber single line (6) form by some carbon fibre precursors (8) are stranded; Be positioned at aluminium lamination (7) and be filled with polyester gluing filling part (9) between some carbon fibre precursors (8).
2. low-loss overhead power transmission line according to claim 1, is characterized in that: the number of described carbon fibre precursor (8) is at least 300.
3. low-loss overhead power transmission line according to claim 1, is characterized in that: the thickness of described aluminium lamination (7) is 0.1 ~ 0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420801462.9U CN204303437U (en) | 2014-12-16 | 2014-12-16 | Low-loss overhead power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420801462.9U CN204303437U (en) | 2014-12-16 | 2014-12-16 | Low-loss overhead power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204303437U true CN204303437U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420801462.9U Active CN204303437U (en) | 2014-12-16 | 2014-12-16 | Low-loss overhead power transmission line |
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|---|---|
| CN (1) | CN204303437U (en) |
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- 2014-12-16 CN CN201420801462.9U patent/CN204303437U/en active Active
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