CN205920809U - Steel core medium strength aluminium alloy stranded conductor's damping air wire - Google Patents

Abstract

The utility model provides a steel core medium strength aluminium alloy stranded conductor's damping air wire, its natural vibration frequency diverse and mutual interference that makes each layer aluminiumalloy wire and steel core to the automation consumes aeolian vibration's energy, reaches the effect of damping. It includes SMIS conductor, innerlayer conductor, middle level conductor, outer conductor, its characterized in that: inner core conductor specifically is a plurality of high -strength zinc -coated steel wire transposition and forms, innerlayer conductor forms the closed first anchor ring structure that corresponds by the first aluminiumalloy wire combination that a plurality of sections cross -sections are the Z type, the middle level conductor forms the closed second anchor ring structure that corresponds by the second aluminiumalloy wire combination that a plurality of sections cross -sections are the Z type, outer conductor forms the closed third anchor ring structure that corresponds by the third aluminiumalloy wire combination that a plurality of sections cross -sections are the Z type, the circular interior intracavity that closed third anchor ring structure formed is provided with the middle level conductor.

Description

The vibration damping aerial condutor of strength aluminium alloy twisted wire in a kind of steel core

Technical field

This utility model is related to the technical field of overhead transmission line, and in specially a kind of steel core, strength aluminium alloy twisted wire subtracts Shake aerial condutor.

Background technology

With the continuous development of national economy, power transfer capacity and fed distance increase rapidly, Large Copacity, at a distance Transmission line of electricity puts into operation successively, and power delivery voltage also improves therewith.Wire, as the carrier of transmission line of electricity electrical power, is to ensure that electricity The important component part of Force system safe operation.The vibration problem of overhead transmission line is one of power transmission major issue, existing Relate to overhead transmission line, be substantially that round wires are regular stranded, itself does not have effectiveness in vibration suppression, its be chronically at open field it Under, affected by natural conditions (phoenix, rain, ice and snow, thunder and lightning etc.) and other external conditions, be susceptible to various accidents.Wherein Because the accident that conductor vibration causes is most.Under wind action, the wire moment is in vibrational state, according to frequency and amplitude Difference, the vibration of wire is broadly divided into three kinds: 1, high frequency aeolian vibration a little；2nd, in intermediate frequency, the secondary span of width vibrates；3、 The waving of low frequency large amplitude.These three vibrations all can cause different degrees of destruction to wire and transmission line of electricity.Wherein, wire Aeolian vibration is the most frequent, and vibration duration is longer, and the fatigue of wire usually can be caused stranded, or even broken string, causes this time The asymmetric operation on road, this is very unfavorable to stablizing of power system.

Content of the invention

For the problems referred to above, this utility model provides a kind of vibration damping aerial condutor of strength aluminium alloy twisted wire in steel core, It makes the eigentone of each layer aluminium alloy wire and steel core different and interferes, thus automatically consuming aeolian vibration Energy, reach the effect of vibration damping.

The vibration damping aerial condutor of strength aluminium alloy twisted wire in a kind of steel core, its technical scheme is such that it includes SMIS Conductor, inner conductor, middle level conductor, outer contact it is characterised in that: described middle core conductor be specially some high intensity zinc-plated The stranded formation of steel wire, described inner conductor combine by the first aluminium alloy wire that some sections of sections are Z-shaped to be formed corresponding closes the One anchor ring structure, described middle level conductor combine by the second aluminium alloy wire that some sections of sections are Z-shaped to be formed corresponding closes the Two anchor ring structures, described outer contact combine by the 3 Al alloy line that some sections of sections are Z-shaped to be formed corresponding closes the Three anchor ring structures, are provided with middle level conductor in the round cavity that described closing the 3rd anchor ring structure is formed, described middle level The external diameter of conductor corresponding closing the second anchor ring structure is d2, and the internal diameter of described closing the 3rd anchor ring structure is d3, d2= 0.8d3, is provided with described inner conductor, described middle level conductor in the round cavity that described closing the second anchor ring structure is formed The internal diameter of corresponding closing the second anchor ring structure is d2, and described in described inner conductor, corresponding closing the first anchor ring structure is outer Footpath is d1, d1=0.8d2, is provided with described middle core conductor in the round cavity that described closing the first anchor ring structure is formed, The internal diameter of described inner conductor corresponding closing the first anchor ring structure is d1, the equivalent cylindrical anchor ring of described middle core conductor straight Footpath is d4, d4=0.8d1.

It is further characterized by the filament diameter of described high-strength galvanized steel wire is 2.66mm, and tensile strength is more than etc. In 2160mpa；

Section is the first aluminium alloy wire of Z-shaped, section is the second aluminium alloy wire of Z-shaped, section is the 3 Al alloy of Z-shaped The round peripheral edge of line is arc-shaped edges, including external arc in, Inner arc, described external arc in, Inner arc in the middle part of radian weight Close part and connect and form overall structure, described external arc while expose the inner be close to adjacent position Inner arc while expose outer End is it is ensured that form the anchor ring structure of closing；

Described inner conductor is combined by eight sections of radian identical first aluminium alloy wires and forms corresponding closing the first anchor ring Structure, described middle level conductor is combined by 16 sections of radian identical second aluminium alloy wires and forms corresponding closing the second anchor ring Structure, described outer contact are combined by 24 sections of radian identical second aluminium alloy wires and form corresponding closing the 3rd anchor ring Structure；

Described middle core conductor is specially the stranded shape of structure according to+6 outer shrouds in 1 center for seven high-strength galvanized steel wires Become.

After technique scheme, it is Z-shaped by the section made conventional round aluminium alloy wire with certain radian Aluminium alloy wire, and by some sections of the first aluminium alloy wires combinations formed corresponding closing the first anchor ring structures, some sections the Two aluminium alloy wire combinations form corresponding closing the second anchor ring structure, some sections of 3 Al alloy line combinations form corresponding envelope Close the 3rd anchor ring structure, in the round cavity being formed by closing the 3rd anchor ring structure, be provided with middle level conductor, middle level The external diameter of conductor corresponding closing the second anchor ring structure is d2, and the internal diameter of closing the 3rd anchor ring structure is d3, d2= 0.8d3, is provided with inner conductor in the closing round cavity that formed of the second anchor ring structure, the corresponding closing of middle level conductor the The internal diameter of two anchor ring structures is d2, and the external diameter of inner conductor corresponding closing the first anchor ring structure is d1, d1=0.8d2, envelope Close in the round cavity that the first anchor ring structure is formed and be provided with middle core conductor, inner conductor corresponding closing the first anchor ring The internal diameter of structure is d1, and a diameter of d4 of the equivalent cylindrical anchor ring of middle core conductor, d4=0.8d1 are so that middle core conductor and internal layer Leave gap between the inwall of conductor, leave gap between the inwall of the outer ring surface of inner conductor and middle level conductor, outside the conductor of middle level Gap is left, due to there is gap so that middle core conductor, inner conductor, middle level conductor, outer between the inwall of anchor ring and outer contact There is mutually intrinsic frequency of vibration between layer conductor, make wire during aeolian vibration under stress, due to each layer aluminium alloy The eigentone of line and steel core is different and interferes, and can automatically consume the energy of aeolian vibration, reach vibration damping Effect.

Brief description

Fig. 1 is cross-sectional cut-away structural representation of the present utility model；

Fig. 2 is that enlarged drawing illustrated by the combinative structure that two adjacent end sections are Z-shaped aluminium alloy wire；

Title corresponding in figure sequence number is as follows:

Middle core conductor 1, inner conductor 2, middle level conductor 3, outer contact 4, high-strength galvanized steel wire 5, the first aluminium alloy wire 6th, closing the first anchor ring structure 7, the second aluminium alloy wire 8, closing the second anchor ring structure 9,3 Al alloy line 10, closing the Three anchor ring structures 11, the 3rd round cavity 12, the second round cavity 13, the first round cavity 14, equivalent cylindrical anchor ring 15, outer Arc-shaped edges 16, Inner arc side 17.

Specific embodiment

The vibration damping aerial condutor of strength aluminium alloy twisted wire in a kind of steel core, is shown in Fig. 1, Fig. 2: it includes middle core conductor 1, internal layer Conductor 2, middle level conductor 3, outer contact 4, the stranded formation of specially some high-strength galvanized steel wires 5 of middle core conductor 1, internal layer is led Body 2 is combined by the first aluminium alloy wire 6 that some sections of sections are Z-shaped and forms corresponding closing the first anchor ring structure 7, middle level conductor 3 by some sections of sections be Z-shaped the second aluminium alloy wire 8 combine is formed corresponding close the second anchor ring structure 9, outer contact 4 Combined by the 3 Al alloy line 10 that some sections of sections are Z-shaped and form corresponding closing the 3rd anchor ring structure 11, close the 3rd It is provided with middle level conductor 3, corresponding closing second circle of middle level conductor 3 in the 3rd round cavity 12 that anchor ring structure 11 is formed The external diameter of annuli arrangement 9 is d2, and the internal diameter of closing the 3rd anchor ring structure 11 is d3, d2=0.8d3, closing the second anchor ring knot It is provided with inner conductor 2, middle level conductor 3 corresponding closing the second anchor ring structure 9 in the second round cavity 13 that structure 9 is formed Internal diameter be d2, the external diameter of inner conductor 3 corresponding closing the first anchor ring structure 7 is d1, d1=0.8d2, closes the first annulus It is provided with middle core conductor 1, inner conductor 2 corresponding closing the first anchor ring in the first round cavity 14 that face structure 7 is formed The internal diameter of structure 7 is d1, a diameter of d4 of the equivalent cylindrical anchor ring 15 of middle core conductor 1, d4=0.8d1, high-strength galvanized steel wire 5 Filament diameter be 2.66mm, tensile strength be more than or equal to 2160mpa.

The 3rd aluminum that section is the first aluminium alloy wire 6 of Z-shaped, section is the second aluminium alloy wire 8 of Z-shaped, section is Z-shaped closes The round peripheral edge of gold thread 10 is arc-shaped edges, including external arc in 16, Inner arc 17, during external arc is in 16, Inner arc 17 Portion radian intersection connects and forms overall structure, external arc while 16 expose the inner be close to adjacent position Inner arc while 17 outside The outer end of dew is it is ensured that form the anchor ring structure of closing.

Specific embodiment, is shown in that Fig. 1: inner conductor 2 is combined by eight sections of radian identical first aluminium alloy wires 6 and forms correspondence Closing the first anchor ring structure 7, middle level conductor 3 combined by 16 sections of radian identical second aluminium alloy wires 8 formed corresponding Close the second anchor ring structure 9, outer contact 4 closed by 24 sections of radian identical 3 Al alloy line groups 10 formed corresponding Close the 3rd anchor ring structure 11；Middle core conductor 1 is specially seven high-strength galvanized steel wires 5 according to+6 outer shrouds in 1 center The stranded formation of structure, this structure makes overall structure consolidate, is easily assembled to.

Its advantage is as follows: the vibration damping aerial condutor of this steel core aluminum alloy stranded wire has following several respects advantage:

(1), this wire can consume the energy of aeolian vibration automatically, reaches effectiveness in vibration suppression；

(2), highest can reach the 60% of breakdown strength using stress, therefore can increase line span；

(3), because line span can be increased it is possible to reduce shaft tower radix；

(4), because to reduce shaft tower radix it is possible to reduce the investment of line construction；

(5), reduce the stranded accident of wire fatigue leading to because of aeolian vibration, increase the stability that circuit runs.

Above specific embodiment of the utility model is described in detail, but content has been only what this utility model was created Preferred embodiment is it is impossible to be considered the practical range for limiting this utility model creation.All creation according to this utility model is applied for The impartial change that scope is made and improvement etc., all should still belong within patent covering scope of the present utility model.

Claims (4)

1. in a kind of steel core strength aluminium alloy twisted wire vibration damping aerial condutor, it includes middle core conductor, inner conductor, middle level are led Body, outer contact it is characterised in that: described middle core conductor is specially the stranded formation of some high-strength galvanized steel wires, described interior Layer conductor by some sections of sections be Z-shaped the first aluminium alloy wire combine formed corresponding close the first anchor ring structure, described in Layer conductor is combined by the second aluminium alloy wire that some sections of sections are Z-shaped and forms corresponding closing the second anchor ring structure, described outer Layer conductor is combined by the 3 Al alloy line that some sections of sections are Z-shaped and forms corresponding closing the 3rd anchor ring structure, described envelope Close in the round cavity that the 3rd anchor ring structure is formed and be provided with middle level conductor, described middle level conductor corresponding closing the second circle The external diameter of annuli arrangement is d2, and the internal diameter of described closing the 3rd anchor ring structure is d3, d2=0.8d3, described closing second circle It is provided with described inner conductor, described middle level conductor corresponding closing the second anchor ring in the round cavity that annuli arrangement is formed The internal diameter of structure is d2, and described in described inner conductor, the external diameter of corresponding closing the first anchor ring structure is d1, d1=0.8d2, institute State in the round cavity that closing the first anchor ring structure is formed and be provided with described middle core conductor, the corresponding envelope of described inner conductor The internal diameter closing the first anchor ring structure is d1, and a diameter of d4, the d4=0.8d1 of the equivalent cylindrical anchor ring of described middle core conductor cut Face is the first aluminium alloy wire of Z-shaped, section is the second aluminium alloy wire of Z-shaped, section be Z-shaped 3 Al alloy line circumference to While being arc-shaped edges, including external arc in, Inner arc, described external arc in, Inner arc in the middle part of radian intersection connect Form overall structure, described external arc while expose the inner be close to adjacent position Inner arc while the outer end exposed.

2. as claimed in claim 1 in a kind of steel core strength aluminium alloy twisted wire vibration damping aerial condutor it is characterised in that: described The filament diameter of high-strength galvanized steel wire is 2.66mm, and tensile strength is more than or equal to 2160mpa.

3. as claimed in claim 1 in a kind of steel core strength aluminium alloy twisted wire vibration damping aerial condutor it is characterised in that: described Inner conductor combined by eight sections of radian identical first aluminium alloy wires formed corresponding closing the first anchor ring structure, described in Layer conductor is combined by 16 sections of radian identical second aluminium alloy wires and forms corresponding closing the second anchor ring structure, described outer layer Conductor is combined by 24 sections of radian identical second aluminium alloy wires and forms corresponding closing the 3rd anchor ring structure.

4. as claimed in claim 3 in a kind of steel core strength aluminium alloy twisted wire vibration damping aerial condutor it is characterised in that: described Middle core conductor is specially the stranded formation of structure according to+6 outer shrouds in 1 center for seven high-strength galvanized steel wires.