CN208174214U - A kind of conducting wire reducing arc sag variation - Google Patents
A kind of conducting wire reducing arc sag variation Download PDFInfo
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- CN208174214U CN208174214U CN201820560708.6U CN201820560708U CN208174214U CN 208174214 U CN208174214 U CN 208174214U CN 201820560708 U CN201820560708 U CN 201820560708U CN 208174214 U CN208174214 U CN 208174214U
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- conducting wire
- tie point
- tension lines
- arc sag
- sag variation
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Abstract
The utility model discloses a kind of conducting wire that can reduce arc sag variation, it is characterised in that：Parallel tension lines is set on the outside of the conducting wire, often it is separated by pre-determined distance in the tension lines and sets at least one first tie point, first tie point is corresponded on the conducting wire sets the second tie point, each first tie point is affixed by connector with corresponding second tie point, and the tension lines plays the role of suspension to the conducting wire.The utility model can effectively reduce conducting wire sag variation, and it is connected firmly, it is highly-safe, the purpose for reducing conducting wire sag variation is realized at lower cost, in the case that conducting wire is two or more, conducting wire sag variation can equally be reduced using structure design, reduce skin effect, corona is prevented, to play transmission line of electricity conveying capacity to the maximum extent.
Description
Technical field
The utility model relates to lead technology fields, more particularly to a kind of conducting wire that can reduce arc sag variation.
Background technique
It is well known that the electric current passed through in the conducting wire of transmission line of electricity can be such that conductor temperature increases, conductor temperature is increased simultaneously
Conducting wire expansion elongation, causes conducting wire sag to increase, and is will lead to when serious to the insufficient short circuit dischange of scissors crossing object distance.It is common
Way is to increase the height of shaft tower in capital construction, reserves enough nargin for arc sag variation.And shaft tower height increases, and can directly increase
Add construction cost.
With the increase of power load, part transmission line of electricity is caused to overload.It is replaced if be transformed using plain conductor,
It needs to increase sectional area of wire, will exceed the weight bearing power of original shaft tower, need to build shaft tower and its basis again, investment is very
Greatly.
The capacity-improving conducting wires of the prior art replace the steel core of common steel-cored aluminium strand using the smaller material of linear expansion coefficient, adopt
Conventional aluminium is replaced with heat-resisting aluminium alloy, can make capacity-improving conducting wires that there is arc more lower than plain conductor when operating temperature is higher
It hangs down variation, so as to realize that replacing capacity-improving conducting wires on original shaft tower can be realized increase-volume by a relatively large margin, substitute steel core
Material has carbon fiber core, invar steel core, Al-base ceramic fiber composite core etc..But there is also following shortcomings for the prior art：1, it holds
It is wrapped up by the alternative materials of tension by aluminum stranded conductor, in aluminum stranded conductor adstante febre, temperature is synchronous with aluminum stranded conductor to be risen, even if having than steel
Smaller linear expansion coefficient, the arc sag of conducting wire still will increase half or so, especially below inflection temperature（About 110 DEG C）,
The sag characteristic of above-mentioned capacity-improving conducting wires is not significant compared with plain conductor.Existing plain conductor arc sag over the ground and to intersect across
It is any beyond plain conductor temperature rise to maximum operating temperature when more object distance lacks redundancy nargin（70℃）Arc sag variation be all
Do not allow, so that the compatibilization effect of common capacity-improving conducting wires is restricted.2, material cost is higher, as invar belongs to iron nickel
One kind of alloy, ingredient are nickel 36%, and price is higher.3, material poor durability, such as carbon fiber core are easy when constructing bending
It fractures, in long-play meeting aging fracture etc..
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide one kind and are connected firmly, highly-safe, transmission of electricity
Ability is strong, the lower-cost conducting wire for reducing arc sag variation.
The technical solution of the utility model is as follows：Parallel tension lines is set on the outside of conducting wire, is often separated by the tension lines
Pre-determined distance sets at least one first tie point, and first tie point is corresponded on the conducting wire and sets the second tie point, Mei Ge
One tie point is affixed by connector with corresponding second tie point, and the tension lines plays the role of suspension to the conducting wire.
Further, the tension lines is adopted as steel strand wires.
Further, the range of the pre-determined distance is at 1 ~ 100 meter.
Further, the pre-determined distance is less than or equal to the half of place shaft tower span.
Optionally, the connector includes preformed armor rods.
Optionally, the connector includes conductor spacer, the tension lines at least provided with one, the conducting wire be equipped with two or
It two or more, is spaced and connects by conductor spacer between the conducting wire, the tension lines.
Wherein, it is connected between the conductor spacer and the conducting wire, the tension lines using preformed armor rods.
Wherein, the tension lines is located at the top or middle part of the conducting wire.
Compared with the existing technology, the beneficial effects of the utility model are：The utility model can effectively reduce conducting wire sag
Variation, and is connected firmly, highly-safe, realizes the purpose for reducing conducting wire sag variation at lower cost, conducting wire be two with
In the case where upper, conducting wire sag variation can equally be reduced using structure design, skin effect is reduced, corona is prevented, with maximum
Play to limit transmission line of electricity conveying capacity.
Detailed description of the invention
Fig. 1 is the overall effect figure of the utility model embodiment one；
Fig. 2 is the side schematic view of the utility model embodiment one；
Fig. 3 is the side schematic view of the utility model embodiment two and embodiment three；
Fig. 4 is the schematic cross-section of the utility model embodiment two；
Fig. 5 is the schematic cross-section of the utility model embodiment three.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Embodiment one
As shown in Figure 1 and Figure 2, one kind provided in this embodiment can reduce the conducting wire of arc sag variation, and conducting wire 1 is erected at first
Between shaft tower 3, the second shaft tower 8, parallel tension lines 2 is set on the outside of the conducting wire 1, one end of tension lines 2 is fixed in the first shaft tower 3
On, the other end of tension lines 2 is fixed on the second shaft tower 8, and pre-determined distance is often separated by tension lines 2 and sets at least one first connection
4 are put, first tie point 4 is corresponded on the conducting wire 1 and sets the second tie point 5, each first tie point 4 connects with corresponding second
Contact 5 is affixed by connector 6, and the tension lines 2 plays the role of suspension to the conducting wire 1, and will not be with the raising of temperature
And it deforms.
The present embodiment makes its tie point be fixed on tension lines 2 by separated by a distance on conducting wire 1 by a connection piece 6
On, preferably, being separated by 1 ~ 100m setting, one connection, pre-determined distance is less than or equal to the half of 3 span of place shaft tower, passes through
It calculates, which is that 1 arc sag of conducting wire changes lesser preferable distance, and under different high temperature, arc sag is not much different, the tension
Line 2 plays the role of propping up conducting wire 1, so that the active force of conducting wire 1 is all attached in tension lines 2.It is connected firmly, safety
Height ensure that the stability of transmission of electricity.
Preferably, first shaft tower 3 is equal with the height of the second shaft tower 8.
Preferably, the tension lines 2 is adopted as steel strand wires.Stabilized structure.
As shown in Fig. 2, the connector 6 is adopted as preformed armor rods in the present embodiment.First tie point 4 and the second tie point 5
It is corresponding be equipped with it is several, between several first tie points 4 and the second tie point 5 pass through preformed armor rods solderless wrapped connection.
In the present embodiment, the conducting wire 1 is steel-cored aluminium strand.The preformed armor rods use and 1 identical material of conducting wire.
In the present embodiment, the junction of the conducting wire 1 and tension lines 2 is contactless connection.Certainly, contact can also be used
Formula connection.
The present embodiment is the structure design of the reduction conducting wire sag of single wire, is suitable for the transmission line of electricity of 35 ~ 220kV.
Embodiment two
As shown in Figure 3, Figure 4, one kind provided in this embodiment can reduce the conducting wire of arc sag variation, and conducting wire 1 is equipped with two,
It is spaced between two conducting wires 1 by a conductor spacer 7, the conducting wire 1 is separated by 20 ~ 50m and a conductor spacer 7 is arranged, between described
Every stick 7 and the conducting wire 1 tie point as second tie point 5, correspond to second tie point 5 in the tension lines 2
The first tie point 4 is set, each first tie point 4 is affixed by conductor spacer 7 with corresponding second tie point 5.The tension lines 2
It is located at the top of conducting wire 1.
In the present embodiment, for tension lines 2 at least provided with one, the first tie point 4 and the second tie point 5 are correspondingly provided with one,
Preferably, connecting between the conducting wire 1, conductor spacer 7, tension lines 2 by preformed armor rods, it ensure that the positioning of conductor spacer 7 is motionless.
The conducting wire 1 of the present embodiment is equipped with two, improves the conveying capacity of transmission line of electricity, while can effectively reduce two and leading
The arc sag of line 1 changes, and ensure that the safety of transmission of electricity.The present embodiment is suitable for the transmission line of electricity of 220 ~ 500kV.
Embodiment three
As shown in figs. 3 and 5, one kind provided in this embodiment can reduce the conducting wire of arc sag variation, and conducting wire 1 is equipped with several
Item is spaced between conducting wire 1 and conducting wire 1 by conductor spacer 7, and the conducting wire 1 is separated by 20 ~ 50m and a conductor spacer 7, institute is arranged
The tie point of conductor spacer 7 and the conducting wire 1 is stated as second tie point 5, correspond to described second in the tension lines 2 and connects
5 the first tie point 4 of setting of point, each first tie point 4 are affixed by conductor spacer 7 with corresponding second tie point 5.The tension
Line 2 is located at the middle part of conducting wire 1, and conducting wire 1, conductor spacer 7 pass through preformed armor rods between tension lines 2 and connect.
The conducting wire 1 of the present embodiment is added to several, plays transmission line of electricity conveying capacity to the maximum extent, while can guarantee every
The arc sag variation of bar conducting wire 1, can also prevent corona, to ensure that the peace of transmission of electricity while improving 1 power transmission efficiency of conducting wire
Quan Xing.The present embodiment is suitable for the transmission line of electricity of 500kV or more.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (8)
1. the conducting wire that one kind can reduce arc sag variation, it is characterised in that：Parallel tension lines, the tension lines are set on the outside of conducting wire
On be often separated by pre-determined distance and set at least one first tie point, first tie point is corresponded on the conducting wire and sets the second connection
Point, each first tie point is affixed by connector with corresponding second tie point, and the tension lines plays the conducting wire outstanding
The effect of extension.
2. the conducting wire that one kind according to claim 1 can reduce arc sag variation, it is characterised in that：The tension lines uses steel
Twisted wire.
3. the conducting wire that one kind according to claim 1 can reduce arc sag variation, it is characterised in that：The model of the pre-determined distance
It is trapped among 1 ~ 100 meter.
4. the conducting wire that one kind according to claim 1 can reduce arc sag variation, it is characterised in that：The pre-determined distance is less than
Or the half equal to place shaft tower span.
5. the conducting wire that one kind according to claim 1 can reduce arc sag variation, it is characterised in that：The connector includes pre-
Hank knotting.
6. the conducting wire that one kind according to claim 1 can reduce arc sag variation, it is characterised in that：Between the connector includes
Every stick, for the tension lines at least provided with one, the conducting wire is equipped with two or more, the conducting wire, the tension lines it
Between be spaced and connect by conductor spacer.
7. the conducting wire that one kind according to claim 6 can reduce arc sag variation, it is characterised in that：The conductor spacer with it is described
It is connected between conducting wire, the tension lines using preformed armor rods.
8. the conducting wire that one kind according to claim 6 can reduce arc sag variation, it is characterised in that：The tension lines is located at institute
State the top or middle part of conducting wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820560708.6U CN208174214U (en) | 2018-04-19 | 2018-04-19 | A kind of conducting wire reducing arc sag variation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820560708.6U CN208174214U (en) | 2018-04-19 | 2018-04-19 | A kind of conducting wire reducing arc sag variation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208174214U true CN208174214U (en) | 2018-11-30 |
Family
ID=64369979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820560708.6U Active CN208174214U (en) | 2018-04-19 | 2018-04-19 | A kind of conducting wire reducing arc sag variation |
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| Country | Link |
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| CN (1) | CN208174214U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113572113A (en) * | 2021-09-06 | 2021-10-29 | 江西电力职业技术学院 | Overhead transmission cable isolation unit and device |
-
2018
- 2018-04-19 CN CN201820560708.6U patent/CN208174214U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113572113A (en) * | 2021-09-06 | 2021-10-29 | 江西电力职业技术学院 | Overhead transmission cable isolation unit and device |
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