CN206040228U - Low -loss anti -wind electric power transmission conducting wire - Google Patents

Abstract

The utility model discloses a low -loss anti -wind electric power transmission conducting wire, its first compound conducting layer, compound conducting layer of second and the compound conducting layer of third are respectively by the first composite conductor of a plurality of roots, second composite conductor and third compound conductor stranding constitute, the figure of this third composite conductor is greater than the figure of second composite conductor, the figure of this second composite conductor is greater than the figure of first composite conductor, and the length of lay of the compound conducting layer of second is not more than the length of lay of first compound conducting layer, the length of lay of the compound conducting layer of third is not more than the length of lay of the compound conducting layer of second, the atress unit is further including the first steel wire and cladding in proper order in the surperficial tensile layer of first steel wire that are located the center, circular aluminum conductor is closed by a plurality of aluminium skein silks and forms. The utility model discloses it has reduced when single aluminium conductors (cable) steel -reinforced lays in the electric power distribution network below 110kV, receives potential risk such as wire resonance that aeolian vibration arouses, fatigue breaking.

Description

Low-loss wind resistance electric power transmission lead

Technical field

The utility model is related to a kind of electric power transmission lead, more particularly to a kind of low-loss wind resistance electric power transmission lead.

Background technology

Steel-cored aluminium strand is because being beneficial to simple structure, erection and easy to maintenance, circuit low cost, transmission capacity greatly, again Across the laying of the Special Geographic condition such as rivers and mountain valley, with good electric conductivity and the features such as enough mechanical strengths, So being widely used in electric power transmission line.But electric pressure is in the distribution network of below 110kV, steel-cored aluminium strand All be it is single lay, if wind-engaging blows, can freely swing with wind direction, if things go on like this, mechanical damage, Yi Fa can be produced to wire Raw the single wire fracture even risk of whole wire fracture, it is stranded to be commonly called as fatigue, causes fatal harm to transmission line of electricity.

The content of the invention

The utility model provides a kind of low-loss wind resistance electric power transmission lead, and this low-loss wind resistance electric power transmission lead is improved The self-damping performance of wire, can consume automatically the energy of aeolian vibration, reach the effect of vibration damping, significantly reduce wire Fatigue is stranded, moreover it is possible to avoids the electrochemical corrosion caused by bimetallic, greatly extends the service life of wire.

For reaching above-mentioned purpose, the technical solution adopted in the utility model is：A kind of low-loss wind resistance electric power transmission lead, Including the first stranded conductor, the second stranded conductor, this first stranded conductor, the direction of the second stranded conductor stranding are left-hand, into Cable pitch is 2 ~ 3.5m, and first stranded conductor, the second stranded conductor are by the stress unit positioned at center and coat successively The first composite conductive layers, the second composite conductive layers in stress unit outer surface and the 3rd composite conductive layers composition；

First composite conductive layers, the second composite conductive layers and the 3rd composite conductive layers are combined by some first respectively Wire, the second compound wire and the stranded composition of the 3rd compound wire, the number of this 3rd compound wire are more than the second compound wire Number, the number of the number of this second compound wire more than the first compound wire, and the twisting pitch of the second composite conductive layers The no more than twisting pitch of the first composite conductive layers, the twisting pitch of the 3rd composite conductive layers are not more than the second composite conductive layers Twisting pitch, first compound wire, the second compound wire and the 3rd compound wire are by the circular aluminum conductor positioned at center Constitute with the aluminium alloy layer for being coated on circular aluminum conductor outer surface；

The stress unit further include positioned at center the first steel wire and be coated on the anti-of the first Steel Wire Surface successively Layer, the tensile layer is drawn to be constituted by some second steel wires are stranded, first steel wire, the second steel wire outer surface are plated with zinc Layer；The circular aluminum conductor is formed by some aluminium wires are stranded.

In above-mentioned technical proposal, further improved technical scheme is as follows：

1., in such scheme, the twisting pitch of first composite conductive layers is 14 ~ 16, second composite conductive layers Twisting pitch be 12 ~ 14, the twisting pitch of the 3rd composite conductive layers is 10 ~ 12.

2., in such scheme, the twisting pitch of first tensile layer is 18 ~ 26, the stranded section of second tensile layer Away from for 14 ~ 22.

3., in such scheme, the circular aluminum conductor is formed by some aluminium wires are stranded.

As above-mentioned technical proposal is used, the utility model has following advantages compared with prior art：

The utility model low-loss wind resistance electric power transmission lead, which is two same cross-sectional areas using cabling equipment in case Steel-cored aluminium strand or aluminium alloy conductor be in " 8 " font is twisted together, improve the wind loading rating of wire, wind can be consumed automatically The energy of excited vibration, reaches the effect of vibration damping, can reduce the tired stranded of wire, increases the service life of wire（Aluminium is closed Golden material can also avoid bimetallic chemical attack）；The use stress of wire is also improved simultaneously, therefore can increase line span, Reduce shaft tower radix or reduce shaft tower height, save track investment, for the single steel-cored aluminium strand for laying, low-loss Wind resistance electric power transmission lead also has the advantages of operation temperature is lower, and AC resistance is less when circuit runs, and reduces circuit Loss；Secondly, when which reducing in the distribution network of below 110kV that steel-cored aluminium strand is single to be laid, by aeolian vibration institute The wire resonance that causes, the fatigue potential risk such as stranded, extend the service life of circuit, substantially increase the peace of transmission line of electricity Quan Xing.

Description of the drawings

Accompanying drawing 1 is the utility model low-loss wind resistance electric power transmission lead structural representation；

Partial structural diagram of the accompanying drawing 2 for accompanying drawing 1.

In the figures above：1st, the first stranded conductor；2nd, the second stranded conductor；3rd, stress unit；4th, the first composite conductive layers； 41st, the first compound wire；5th, the second composite conductive layers；51st, the second compound wire；6th, the 3rd composite conductive layers；61st, the 3rd it is combined Wire；7th, circular aluminum conductor；8th, aluminium alloy layer；9th, the first steel wire；10th, tensile layer；101st, the second steel wire；13rd, aluminium wire.

Specific embodiment

Below in conjunction with the accompanying drawings and embodiment is further described to the utility model：

Embodiment 1：A kind of low-loss wind resistance electric power transmission lead, including the first stranded conductor 1, the second stranded conductor 2, this First stranded conductor 1,2 stranding of the second stranded conductor direction be left-hand, laying up pitch be 2 ~ 3.5m, first stranded conductor 1st, the second stranded conductor 2 is by the stress unit 3 positioned at center and is coated on the first composite guide of 3 outer surface of stress unit successively Electric layer 4, the second composite conductive layers 5 and the 3rd composite conductive layers 6 are constituted；

First composite conductive layers 4, the second composite conductive layers 5 and the 3rd composite conductive layers 6 are respectively by some first Compound wire 41,61 stranded composition of the second compound wire 51 and the 3rd compound wire, the number of this 3rd compound wire 61 are more than The number of the second compound wire 51, the number of this second compound wire 51 are more than the number of the first compound wire 41, and second answers The twisting pitch for closing conductive layer 5 is not more than the twisting pitch of the first composite conductive layers 4, the twisting pitch of the 3rd composite conductive layers 6 The no more than twisting pitch of the second composite conductive layers 5, first compound wire 41, the second compound wire 51 and the 3rd composite guide Line 61 is constituted by the circular aluminum conductor 7 positioned at center and the aluminium alloy layer 8 for being coated on 7 outer surface of circular aluminum conductor；

The stress unit 3 further include positioned at center the first steel wire 9 and be coated on 9 surface of the first steel wire successively Tensile layer 10）, the tensile layer 10 is constituted by some second steel wires 101 are stranded, outside first steel wire 9, the second steel wire 101 Surface is plated with zinc layers 12；The circular aluminum conductor 7 is formed by some aluminium wires 13 are stranded.

The twisting pitch of above-mentioned first composite conductive layers 4 is 16, and the twisting pitch of second composite conductive layers 5 is 14, The twisting pitch of the 3rd composite conductive layers 6 is 12.

The twisting pitch of above-mentioned tensile layer 10 is 26；13 a diameter of 4.2mm of above-mentioned aluminium wire.

Embodiment 2：A kind of low-loss wind resistance electric power transmission lead, including the first stranded conductor 1, the second stranded conductor 2, this First stranded conductor 1,2 stranding of the second stranded conductor direction be left-hand, laying up pitch be 2 ~ 3.5m, first stranded conductor 1st, the second stranded conductor 2 is by the stress unit 3 positioned at center and is coated on the first composite guide of 3 outer surface of stress unit successively Electric layer 4, the second composite conductive layers 5 and the 3rd composite conductive layers 6 are constituted；

First composite conductive layers 4, the second composite conductive layers 5 and the 3rd composite conductive layers 6 are respectively by some first Compound wire 41,61 stranded composition of the second compound wire 51 and the 3rd compound wire, the number of this 3rd compound wire 61 are more than The number of the second compound wire 51, the number of this second compound wire 51 are more than the number of the first compound wire 41, and second answers The twisting pitch for closing conductive layer 5 is not more than the twisting pitch of the first composite conductive layers 4, the twisting pitch of the 3rd composite conductive layers 6 The no more than twisting pitch of the second composite conductive layers 5, first compound wire 41, the second compound wire 51 and the 3rd composite guide Line 61 is by the circular aluminum conductor 7 positioned at center and the aluminium alloy layer 8 for being coated on 7 outer surface of circular aluminum conductor；

The stress unit 1 further include positioned at center the first steel wire 9 and be coated on 9 surface of the first steel wire successively Tensile layer 10）, the tensile layer 10 is constituted by some second steel wires 101 are stranded, outside first steel wire 9, the second steel wire 101 Surface is plated with zinc layers 12；The circular aluminum conductor 7 is formed by some aluminium wires 13 are stranded.

The twisting pitch of above-mentioned first composite conductive layers 4 is 14, and the twisting pitch of second composite conductive layers 5 is 12, The twisting pitch of the 3rd composite conductive layers 6 is 10.

The twisting pitch of above-mentioned tensile layer 10 is 24；13 a diameter of 2.4mm of above-mentioned aluminium wire.

During using above-mentioned low-loss wind resistance electric power transmission lead, which is two same cross-sectional areas using cabling equipment in case Steel-cored aluminium strand or aluminium alloy conductor be in " 8 " font is twisted together, improve the wind loading rating of wire, wind can be consumed automatically The energy of excited vibration, reaches the effect of vibration damping, can reduce the tired stranded of wire, increases the service life of wire（Aluminium is closed Golden material can also avoid bimetallic chemical attack）；The use stress of wire is also improved simultaneously, therefore can increase line span, Reduce shaft tower radix or reduce shaft tower height, save track investment, for the single steel-cored aluminium strand for laying, low-loss Wind resistance electric power transmission lead also has the advantages of operation temperature is lower, and AC resistance is less when circuit runs, and reduces circuit Loss；Secondly, when which reducing in the distribution network of below 110kV that steel-cored aluminium strand is single to be laid, by aeolian vibration institute The wire resonance that causes, the fatigue potential risk such as stranded, extend the service life of circuit, substantially increase the peace of transmission line of electricity Quan Xing.

Above-described embodiment only for illustrating technology design of the present utility model and feature, its object is to allow and be familiar with technique Personage will appreciate that content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this. All equivalence changes made according to the utility model Spirit Essence or modification, should all cover protection domain of the present utility model it It is interior.

Claims (1)

1. a kind of low-loss wind resistance electric power transmission lead, it is characterised in that：Including the first stranded conductor（1）, the second stranded conductor （2）, this first stranded conductor（1）, the second stranded conductor（2）The direction of stranding is left-hand, and laying up pitch is 2 ~ 3.5m, described the One stranded conductor（1）, the second stranded conductor（2）By the stress unit positioned at center（3）Stress unit is coated on successively（3） First composite conductive layers of outer surface（4）, the second composite conductive layers（5）With the 3rd composite conductive layers（6）Composition；

First composite conductive layers（4）, the second composite conductive layers（5）With the 3rd composite conductive layers（6）Respectively by some One compound wire（41）, the second compound wire（51）With the 3rd compound wire（61）Stranded composition, this 3rd compound wire（61） Number be more than the second compound wire（51）Number, this second compound wire（51）Number be more than the first compound wire（41） Number, and the second composite conductive layers（5）Twisting pitch be not more than the first composite conductive layers（4）Twisting pitch, the 3rd is multiple Close conductive layer（6）Twisting pitch be not more than the second composite conductive layers（5）Twisting pitch, first compound wire（41）、 Second compound wire（51）With the 3rd compound wire（61）By the circular aluminum conductor positioned at center（7）Lead with circular aluminum is coated on Line（7）The aluminium alloy layer of outer surface（8）Constitute；

The stress unit（3）Further include the first steel wire positioned at center（9）The first steel wire is coated on successively（9）Surface Tensile layer（10）, the tensile layer（10）By some second steel wires（101）Stranded composition, first steel wire（9）, second Steel wire（101）Outer surface is plated with zinc layers（12）；The circular aluminum conductor（7）By some aluminium wires（13）It is stranded to form.