CN205543265U - 2 full tension preformed helical of concentric turntable hollow wire of layer aluminium hank layer circle line strip that continues - Google Patents
2 full tension preformed helical of concentric turntable hollow wire of layer aluminium hank layer circle line strip that continues Download PDFInfo
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- CN205543265U CN205543265U CN201620334513.0U CN201620334513U CN205543265U CN 205543265 U CN205543265 U CN 205543265U CN 201620334513 U CN201620334513 U CN 201620334513U CN 205543265 U CN205543265 U CN 205543265U
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Abstract
The utility model discloses a 2 full tension preformed helical of concentric turntable hollow wire of layer aluminium hank layer circle line strip that continues, including the concentric turntable hollow wire of two yuan of lines, inlayer strip, packing and outer strip, many step shafts form is set to the two yuan of concentric turntable hollow wire junction of line tip, and its tip all has the central sinle silk and the aluminium hank layer of shelling out, cascadedly kinks inlayer strip, packing and outer strip in proper order on the concentric turntable hollow wire tip of two yuan of lines. The utility model discloses a cascaded ground of packing overlap joint has guaranteed that two -layer aluminium twists the aluminum stranded conductor layer continuity of the concentric turntable hollow wire of layer circle line on arriving the aluminium hank layer of the concentric turntable hollow wire of circle line, has increased an area of contact that continues, and current density reduces, and the contact resistance of the strip connection that continues diminishes, and the junction generates heat for a short time, and joint strength is better, and the grip is bigger and the retentivity grip is better, and the utility model discloses still have simple structure, preparation convenient and fast, characteristics with low costs.
Description
Technical field
This utility model relates to a kind of 2 layers of aluminum twisted layer round wires concentric gallows empty conductor preformed connecting strip of full tension force, for
The two-layer aluminum full tension force of twisted layer round wires concentric gallows empty conductor preformed connecting strip attachment structure, belongs to a kind of power transmission line technology neck
Territory.
Background technology
In the past to overhead power transmission conducting wire, often think that wire carries is alternating current, and alternating current has Kelvin effect, it is believed that
Round wires concentric gallows empty conductor inner conductor is inessential, and actual discovery, the alternating current of 50Hz, the skin depth of aluminum is
11.74mm, below LGJ-400 round wires concentric gallows empty conductor is that total cross-section crosses stream.Present two-layer aluminum twisted layer round wires is twisted with one heart
In the full tension force of aerial condutor preformed connecting strip repair technology, the preformed armor rods of packing is led with round wires concentric gallows empty conductor internal layer
Line disconnects, and gap is more than ten millimeter, the preformed connecting strip of full tension force all only by inner layer strips (steel), packing (aluminium alloy, 1 layer),
Outer layer bar (aluminium alloy) is constituted, and as shown in Figure 3, packing is discontinuous with wire aluminum twisted layer, and the effect of transmission electric current is the most weak, makes
Become excessive in packing tip-clearance outer layer bar electric current density, caused the concentric turntable of outer layer bar and round wires when ambient temperature is too high
When hollow wire contact resistance increases, at packing tip-clearance, core electric current in center increases heating, causes center core intensity fall
Low fracture.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of 2 layers of aluminum twisted layer round wires concentric gallows empty conductor entirely to open
The preformed connecting strip of power, for two-layer aluminum twisted layer round wires concentric gallows empty conductor, connecting strip contact area increases, electric current density
Little, connect contact resistance and reduce, generate heat little, bonding strength is good, and grip is big and retentivity good, to solve present in prior art
Problem.
The technical scheme that this utility model is taked is: a kind of 2 layers of aluminum twisted layer full tension force of round wires concentric gallows empty conductor are preformed
Formula connecting strip, including two round wires concentric gallows empty conductors, inner layer strips, packing and outer layer bar, the described two concentric turntables of round wires are empty
Connecting position of wires end is arranged to multi-ladder shaft-like, and its end all has the center core of strip off, ground floor aluminum twisted layer, the second layer
Aluminum twisted layer, described inner layer strips kinks on two center cores, and described packing kinks in inner layer strips, and its length is more than inner layer strips
Length, its two ends grow part and kink in ground floor aluminum twisted layer, and described outer layer bar kinks on packing, and its length is more than filling out
Filling bar length, its two ends grow part and kink in second layer aluminum twisted layer.
Preferably, above-mentioned inner layer strips material is spring steel or aluminum bag spring steel.
Preferably, above-mentioned inner layer strips length presses the choosing of connecting strip standard according to the difference of round wires concentric gallows empty conductor model
With, the steel wire diameter of inner layer strips is equal to the aluminium wire diameter of ground floor aluminum twisted layer, and the external diameter of inner layer strips is equal to outside ground floor aluminum twisted layer
Footpath.
Preferably, the steel wire radical of above-mentioned inner layer strips is equal to the aluminium wire radical of ground floor aluminum twisted layer, and inner layer strips strand is to for right
To.
Preferably, above-mentioned packing material is duralumin.
Preferably, above-mentioned packing length is equal to the pitch length of+10 times of ground floor aluminum twisted layers of inner layer strips length, packing
Aluminium wire diameter be equal to second layer aluminum twisted layer external diameter equal to the aluminium wire diameter of second layer aluminum twisted layer, the external diameter of packing.
Preferably, the aluminium wire radical of above-mentioned packing is equal to the aluminium wire radical of second layer aluminum twisted layer, and packing strand is to for left
To.
Preferably, above-mentioned outer layer bar material is duralumin.
Preferably, above-mentioned outer layer bar length is equal to the pitch length of+10 times of second layer aluminum twisted layers of packing length, outer layer bar
Aluminium wire diameter equal to the aluminium wire diameter of second layer aluminum twisted layer, the external diameter of outer layer article is equal to the external diameter+2 times the of second layer aluminum twisted layer
The aluminium wire diameter of two layers of aluminum twisted layer, the aluminium wire radical of outer layer bar is equal to the girth/line footpath of outer layer bar, and outer layer bar strand is to for dextrad.
The beneficial effects of the utility model: compared with prior art, this utility model is concentric for two-layer aluminum twisted layer round wires
When gallows empty conductor connecting strip connects, stepwise snap in the aluminum twisted layer of round wires concentric gallows empty conductor by packing,
Ensure that the aluminum stranded conductor layer seriality of two-layer aluminum twisted layer round wires concentric gallows empty conductor, increase connecting strip contact area, electric current
Density reduces, and the contact resistance that connecting strip connects diminishes, and connection position heating is less, and the most existing connected mode temperature becomes significantly
Low, and bonding strength is more preferable, bigger and grip the retentivity of grip is more preferable, in the case of connecting strip grip ensure that, saves
Go the use of glue and corundum, further reduce the contact resistance at connecting strip, efficiently solve in prior art and exist
The center core intensity step-down caused because local temperature is too high and the problem that directly ruptures of connecting strip, and this utility model is also
There is simple in construction, quick, the feature of low cost easy to make.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is processing technology procedure structure schematic diagram of the present utility model；
Fig. 3 is the existing two-layer aluminum full tension force of twisted layer round wires concentric gallows empty conductor preformed connecting strip structural representation.
In figure: 1-inner layer strips, 2-packing, 3-outer layer bar, 4-center core, 5-round wires concentric gallows empty conductor, 6-
One layer of aluminum twisted layer, 7-second layer aluminum twisted layer.
Detailed description of the invention
Below in conjunction with the accompanying drawings and utility model is described further by specific embodiment.
Embodiment 1: as shown in Figure 1-Figure 3, a kind of 2 layers of aluminum twisted layer full tension force of round wires concentric gallows empty conductor are preformed to continue
Bar, including two round wires concentric gallows empty conductors 4, inner layer strips 1, packing 2 and outer layer bar 3, two round wires concentric gallows empty conductors 4 are even
End, the place of connecing is arranged to multi-ladder shaft-like, and its end all has the center core 5 of strip off, ground floor aluminum twisted layer 6, second layer aluminum strand
Layer 7, two-layer aluminum twisted layer all becomes multidiameter, inner layer strips 1 to kink on two center cores 5, and packing 2 kinks in inner layer strips 1, its
Length is more than inner layer strips 1 length, and its two ends grow part and kink in ground floor aluminum twisted layer 6, and outer layer bar 3 kinks at packing 2
On, its length is more than packing 2 length, and its two ends grow part and kink in second layer aluminum twisted layer 7, the strand in this utility model
Twine is all that spiral kinks.
Preferably, above-mentioned inner layer strips 1 material is spring steel or aluminum bag spring steel, and inner layer strips 1 length is twisted with one heart according to round wires
The difference of aerial condutor model presses connecting strip standard application, and the steel wire diameter of inner layer strips 1 is straight equal to the aluminium wire of ground floor aluminum twisted layer 6
Footpath, the external diameter of inner layer strips 1 is equal to ground floor aluminum twisted layer 6 external diameter, and the steel wire radical of inner layer strips 1 is equal to the aluminum of ground floor aluminum twisted layer 6
Silk radical, the standard of connecting strip is aerial condutor pre-twisted line hardware technical conditions (DL/T 763-2001), inner layer strips 1 twist to
For dextrad, i.e. pressing right-handed helix, if steel or aluminum Baogang strengthening core, its center core is that the concentric turntable of round wires of 7 steel wires is empty
The inner layer strips lay ratio of wire is 16 ~ 26, and lay ratio is the ratio of pitch and external diameter.
Preferably, above-mentioned packing 2 material is duralumin, and packing 2 length is equal to+10 times of ground floor aluminum of inner layer strips 1 length
The pitch length of twisted layer 6, the aluminium wire diameter of packing 2 is equal to the aluminium wire diameter of second layer aluminum twisted layer 6, the external diameter etc. of packing 2
In second layer aluminum twisted layer 7 external diameter；The aluminium wire radical of packing 2 equal to the aluminium wire radical of second layer aluminum twisted layer 7, packing 2 twist to
For left-hand, i.e. pressing left hand helix, packing 2 lay ratio is 10 ~ 16.
Preferably, above-mentioned outer layer bar 3 material is duralumin, and outer layer bar 3 length is equal to+10 times of second layer aluminum of packing 2 length
The pitch length of twisted layer 7, the aluminium wire diameter of outer layer bar 3 is equal to the aluminium wire diameter of second layer aluminum twisted layer 7, the external diameter etc. of outer layer bar 3
In the aluminium wire diameter of+2 times of second layer aluminum twisted layers 7 of external diameter of second layer aluminum twisted layer 7, the aluminium wire radical of outer layer bar 3 is equal to outer layer bar 3
Girth/line footpath, outer layer bar 3 twists to for dextrad, i.e. presses right-handed helix, and outer layer bar 3 lay ratio is 10 ~ 14.
The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model does not limit to
In this, any those familiar with the art, in the technical scope that this utility model discloses, can readily occur in change
Or replace, all should contain within protection domain of the present utility model, therefore, protection domain of the present utility model should be with described power
The protection domain that profit requires is as the criterion.
Claims (9)
1. the one kind 2 layers aluminum twisted layer round wires concentric gallows empty conductor preformed connecting strip of full tension force, it is characterised in that: include two round wires
Concentric gallows empty conductor (4), inner layer strips (1), packing (2) and outer layer bar (3), described two round wires concentric gallows empty conductors (4)
End, junction is arranged to multi-ladder shaft-like, its end all have the center core (5) of strip off, ground floor aluminum twisted layer (6), second
Layer aluminum twisted layer (7), described inner layer strips (1) kinks on two center cores (5), and described packing (2) kinks in inner layer strips (1)
On, its length is more than inner layer strips (1) length, and its two ends grow part and kink on ground floor aluminum twisted layer (6), described outer layer bar
(3) kinking on packing (2), its length is more than packing (2) length, and its two ends grow part and kink in second layer aluminum twisted layer
(7) on.
A kind of round wires concentric gallows empty conductor preformed connecting strip of full tension force the most according to claim 1, it is characterised in that:
Described inner layer strips (1) material is spring steel or aluminum bag spring steel.
A kind of round wires concentric gallows empty conductor preformed connecting strip of full tension force the most according to claim 1 and 2, its feature exists
In: described inner layer strips (1) length presses connecting strip standard application, inner layer strips according to the difference of round wires concentric gallows empty conductor model
(1) steel wire diameter is equal to ground floor aluminum twisted layer (6) equal to the aluminium wire diameter of ground floor aluminum twisted layer (6), the external diameter of inner layer strips (1)
External diameter.
A kind of round wires concentric gallows empty conductor preformed connecting strip of full tension force the most according to claim 1 and 2, its feature exists
In: the steel wire radical of described inner layer strips (1) equal to the aluminium wire radical of ground floor aluminum twisted layer (6), inner layer strips (1) strand is to for dextrad.
A kind of full tension force of round wires concentric gallows empty conductor preformed connecting strip structure the most according to claim 1, its feature
It is: described packing (2) material is duralumin.
The most according to claim 1 or 5, a kind of full tension force of round wires concentric gallows empty conductor preformed connecting strip structure, it is special
Levy and be: described packing (2) length, equal to the pitch length of+10 times of ground floors aluminum twisted layer (6) of inner layer strips (1) length, is filled
The aluminium wire diameter of bar (2) is equal to second layer aluminum twisted layer equal to the aluminium wire diameter of second layer aluminum twisted layer (6), the external diameter of packing (2)
(7) external diameter.
The most according to claim 1 or 5, a kind of full tension force of round wires concentric gallows empty conductor preformed connecting strip structure, it is special
Levy and be: the aluminium wire radical of described packing (2) is equal to the aluminium wire radical of second layer aluminum twisted layer (7), and packing (2) strand is to for left
To.
A kind of full tension force of round wires concentric gallows empty conductor preformed connecting strip structure the most according to claim 1, its feature
It is: described outer layer bar (3) material is duralumin.
9., according to the full tension force of a kind of round wires concentric gallows empty conductor preformed connecting strip structure described in claim 1 or 8, it is special
Levy and be: described outer layer bar (3) length is equal to the pitch length of+10 times of second layers aluminum twisted layer (7) of packing (2) length, outer layer
The aluminium wire diameter of bar (3) is equal to second layer aluminum twisted layer equal to the aluminium wire diameter of second layer aluminum twisted layer (7), the external diameter of outer layer bar (3)
(7) the aluminium wire diameter of+2 times of second layers aluminum twisted layer (7) of external diameter, the aluminium wire radical of outer layer bar (3) is equal to the week of outer layer bar (3)
Length/line footpath, outer layer bar (3) strand is to for dextrad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620334513.0U CN205543265U (en) | 2016-04-20 | 2016-04-20 | 2 full tension preformed helical of concentric turntable hollow wire of layer aluminium hank layer circle line strip that continues |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620334513.0U CN205543265U (en) | 2016-04-20 | 2016-04-20 | 2 full tension preformed helical of concentric turntable hollow wire of layer aluminium hank layer circle line strip that continues |
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| Publication Number | Publication Date |
|---|---|
| CN205543265U true CN205543265U (en) | 2016-08-31 |
Family
ID=56795915
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620334513.0U Active CN205543265U (en) | 2016-04-20 | 2016-04-20 | 2 full tension preformed helical of concentric turntable hollow wire of layer aluminium hank layer circle line strip that continues |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703094A (en) * | 2016-04-20 | 2016-06-22 | 贵州电网有限责任公司电力科学研究院 | Full-tension pre-stranding type connecting strip repairing method for round wire concentric-stranded overhead electrical conductors |
| CN112864934A (en) * | 2020-12-17 | 2021-05-28 | 贵州电网有限责任公司 | Transmission line broken strand repair cone-barrel-shaped winding reinforcing device |
-
2016
- 2016-04-20 CN CN201620334513.0U patent/CN205543265U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703094A (en) * | 2016-04-20 | 2016-06-22 | 贵州电网有限责任公司电力科学研究院 | Full-tension pre-stranding type connecting strip repairing method for round wire concentric-stranded overhead electrical conductors |
| CN105703094B (en) * | 2016-04-20 | 2018-02-13 | 贵州电网有限责任公司电力科学研究院 | A kind of preformed connecting strip method for repairing and mending of the full tension force of round wires concentric gallows empty conductor |
| CN112864934A (en) * | 2020-12-17 | 2021-05-28 | 贵州电网有限责任公司 | Transmission line broken strand repair cone-barrel-shaped winding reinforcing device |
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| GR01 | Patent grant |