CN205920785U - Steel core super heat -resisting aluminium alloy stranded conductors's damping air wire - Google Patents

Abstract

The utility model provides a steel core super heat -resisting aluminium alloy stranded conductors's damping air wire, its natural vibration frequency diverse and mutual interference that makes each layer heat resistant aluminum alloy wire and steel core to the automation consumes aeolian vibration's energy, reaches the effect of damping. It includes inner core 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, the middle level 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, outer 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, the circular interior intracavity that closed second anchor ring structure formed is provided with the middle level conductor, it is D1 that the middle level conductor corresponds the external diameter that seals first anchor ring structure, the internal diameter that seals second anchor ring structure is d2, D1=0.9d2.

Description

A kind of vibration damping aerial condutor of steel core heat-resisting aluminium alloy twisted wire

Technical field

This utility model is related to the technical field of overhead transmission line, specially a kind of vibration damping of steel core heat-resisting aluminium alloy twisted wire 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 steel core heat-resisting aluminium alloy twisted wire, its The eigentone making each layer heat resistant aluminum alloy wire and steel core is different and interfere, thus automatically consuming wind exciting Dynamic energy, reaches the effect of vibration damping.

A kind of vibration damping aerial condutor of steel core heat-resisting aluminium alloy twisted wire, its technical scheme is such that it includes inner core and leads Body, middle level conductor, outer contact it is characterised in that: described interior core conductor is specially the stranded shape of some high-strength galvanized steel wires Become, described middle level conductor is combined by the first aluminium alloy wire that some sections of sections are Z-shaped and forms corresponding closing the first anchor ring knot Structure, described outer contact is combined by the second aluminium alloy wire that some sections of sections are Z-shaped and forms corresponding closing the second anchor ring knot Structure, is provided with middle level conductor in the round cavity that described closing the second anchor ring structure is formed, corresponding to the conductor of described middle level The external diameter closing the first anchor ring structure is d1, and the internal diameter of described closing the second anchor ring structure is d2, d1=0.9d2, described Close and in the round cavity that the first anchor ring structure is formed, be provided with described interior core conductor, the corresponding closing of described middle level conductor The external diameter of the first anchor ring structure is d1, and a diameter of d3, the d3=0.9d1 of the equivalent cylindrical anchor ring of described interior core conductor are described First aluminium alloy wire, the second aluminium alloy wire are heat-resisting aluminium alloy material, described first aluminium alloy wire, the company of the second aluminium alloy wire Continuous work allows temperature to be 150 DEG C.

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 arc-shaped edges for the round peripheral edge of the second aluminium alloy wire of Z-shaped, Including external arc in, Inner arc, described external arc in, Inner arc in the middle part of radian intersection connect and form overall structure, Described external arc while expose the inner be close to adjacent position Inner arc while the outer end exposed it is ensured that forming the anchor ring knot of closing Structure；

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

Described interior 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, by closing the circle that the second anchor ring structure is formed Interior intracavity is provided with middle level conductor, and the external diameter of described middle level conductor corresponding closing the first anchor ring structure is d1, described closing The internal diameter of the second anchor ring structure is d2, d1=0.9d2, sets in the round cavity that described closing the first anchor ring structure is formed It is equipped with described interior core conductor, the external diameter of described middle level conductor corresponding closing the first anchor ring structure is d1, described interior core conductor Equivalent cylindrical anchor ring a diameter of d3, d3=0.9d1 so that leaving gap between the inwall of interior core conductor and middle level conductor, Leave gap between the inwall of middle level conductor outer ring surface and outer contact, due to there is gap so that interior core conductor, middle level conductor, There is mutually intrinsic frequency of vibration between outer contact, make wire during aeolian vibration under stress, because each layer aluminum closes The eigentone of gold thread 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:

Interior core conductor 1, middle level conductor 2, outer contact 3, high-strength galvanized steel wire 4, the first aluminium alloy wire 5, closing first Anchor ring structure 6, the second aluminium alloy wire 7, closing the second anchor ring structure 8, the second round cavity 9, the first round cavity 10, etc. Imitate cylindrical anchor ring 11, external arc in 12, Inner arc 13.

Specific embodiment

A kind of vibration damping aerial condutor of steel core heat-resisting aluminium alloy twisted wire, is shown in Fig. 1, Fig. 2: it includes interior core conductor 1, middle level is led Body 2, outer contact 3, the stranded formation of specially some high-strength galvanized steel wires 4 of interior core conductor 1, middle level conductor 2 is by some sections Section is that the first aluminium alloy wire 5 combination of Z-shaped forms corresponding closing the first anchor ring structure 6, and outer contact 3 is cut by some sections Face is that the second aluminium alloy wire 7 combination of Z-shaped forms corresponding closing the second anchor ring structure 8, closes the second anchor ring structure 8 institute It is provided with middle level conductor 2, the external diameter of middle level conductor 2 corresponding closing the first anchor ring structure 6 in the second round cavity 9 being formed For d1, the internal diameter closing the second anchor ring structure 8 is d2, d1=0.9d2, closing the first anchor ring structure 6 formed first It is provided with interior core conductor 1, the external diameter of middle level conductor 2 corresponding closing the first anchor ring structure 6 is d1, inner core in round cavity 10 A diameter of d3, d3=0.9d1, the first aluminium alloy wire 5 of the equivalent cylindrical anchor ring 11 of conductor 1, the second aluminium alloy wire 7 are heat-resisting Aluminum alloy material, the first aluminium alloy wire 5, the continuous work of the second aluminium alloy wire 7 allow temperature to be 150 DEG C.

The filament diameter of high-strength galvanized steel wire 4 is 2.66mm, and tensile strength is more than or equal to 2160mpa；

Section is the first aluminium alloy wire of Z-shaped, section is arc-shaped edges for the round peripheral edge of the second aluminium alloy wire of Z-shaped, Including external arc in 12, Inner arc 13, external arc 13 middle part radian intersection in 12, Inner arc connect the overall knot of formation Structure, external arc while 12 expose the inner be close to adjacent position Inner arc while 13 outer ends exposed it is ensured that formed closing annulus Face structure.

Specific embodiment, see Fig. 1: middle level conductor 2 combined by eight radian identical the first aluminium alloy wires 5 formed corresponding Close the first anchor ring structure 6, outer contact 3 is combined by 16 sections of radian identical second aluminium alloy wires 7 and forms corresponding envelope Close the second anchor ring structure 8,；Interior core conductor 1 is specially the knot according to+6 outer shrouds in 1 center for seven high-strength galvanized steel wires 10 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 (2)

1. a kind of vibration damping aerial condutor of steel core heat-resisting aluminium alloy twisted wire, it includes interior core conductor, middle level conductor, outer contact, It is characterized in that: the stranded formation of specially some high-strength galvanized steel wires of described interior core conductor, described middle level conductor is by some Section section is that the first aluminium alloy wire combination of Z-shaped forms corresponding closing the first anchor ring structure, and described outer contact is by some Section section is that the second aluminium alloy wire combination of Z-shaped forms corresponding closing the second anchor ring structure, described closing second anchor ring It is provided with middle level conductor, outside described middle level conductor corresponding closing the first anchor ring structure in the round cavity that structure is formed Footpath is d1, and the internal diameter of described closing the second anchor ring structure is d2, d1=0.9d2, described closing the first anchor ring structure institute shape It is provided with described interior core conductor, the external diameter of described middle level conductor corresponding closing the first anchor ring structure is in the round cavity becoming D1, a diameter of d3, the d3=0.9d1 of the equivalent cylindrical anchor ring of described interior core conductor, described first aluminium alloy wire, the second aluminium alloy Line is heat-resisting aluminium alloy material, and described first aluminium alloy wire, the continuous work of the second aluminium alloy wire allow temperature to be 150 DEG C, Section is the first aluminium alloy wire of Z-shaped, section is arc-shaped edges, including cylindrical for the round peripheral edge of the second aluminium alloy wire of Z-shaped Arc in, Inner arc, described external arc in, Inner arc in the middle part of radian intersection connect and form overall structure, described cylindrical Arc while expose the inner be close to adjacent position Inner arc while the outer end exposed, described middle level conductor is by eight sections of radian identicals the One aluminium alloy wire combination forms corresponding closing the first anchor ring structure, and described outer contact is by 16 sections of radian identicals second Aluminium alloy wire combination forms corresponding closing the second anchor ring structure, and described interior core conductor is specially seven high-strength galvanized steel wires The stranded formation of structure according to+6 outer shrouds in 1 center.

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