CN204651071U - Rated voltage 10kV carbon fiber compound reinforced core aerial insulated cable - Google Patents
Rated voltage 10kV carbon fiber compound reinforced core aerial insulated cable Download PDFInfo
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- CN204651071U CN204651071U CN201520369251.7U CN201520369251U CN204651071U CN 204651071 U CN204651071 U CN 204651071U CN 201520369251 U CN201520369251 U CN 201520369251U CN 204651071 U CN204651071 U CN 204651071U
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Abstract
The utility model relates to a kind of rated voltage 10kV carbon fiber compound reinforced core aerial insulated cable, comprise the strengthening core being positioned at center, the insulating outer layer being surrounded on the conductive unit outside strengthening core and being wrapped in outside conductive unit from inside to outside successively, strengthening core is carbon fiber complex core, the soft aluminium of conductive unit to be some close-packed arrays be annular or common electrical aluminum steel side by side spiral winding form, the cross section of soft aluminium or common electrical aluminum steel is fan-shaped, and the number of plies of conductive unit is one deck or two-layer.The beneficial effects of the utility model are: resistance low capacity is large, and lightweight intensity is large, and sag characteristic is excellent, applied widely.
Description
Technical field
The utility model relates to a kind of rated voltage 10kV carbon fiber compound reinforced core aerial insulated cable.
Background technology
Along with provincial electric power company is to the increasing year by year of distribution network transform dynamics, distribution is engineered to enter " profundal zone ".Some field conduct conditions are good, and the transformation project that difficulty of construction is low has all been completed and has been put into operation.There is line span and greatly, do not possess the problems such as inserted link condition, political affairs place difficulty be large in the route majority of not transforming left over.How to utilize original shaft tower and passage to complete lines escalation and be transformed into the difficult problem of pendulum in face of grass-roots unit.
Design according to existing directive/guide, 10kV distribution aerial condutor main line selects JKLYJ-240 insulated conductor, and span is according to 50 meters of controls.But current operating old 10kV circuit is generally LGJ-150/95/70 plain conductor, span is not at 60-100 rice etc.This just causes line design must carry out inserted link, new vertical rod tower and alternate channel, and construction and political affairs place difficulty significantly promote.Particularly run into across water body, across house and the situation across road, design and construction are all difficult to carry out.
If but use carbon fiber complex core suspended insulated guide wire, because of sag characteristic and the lightweight advantage of its excellence, just track remodelling can be carried out when not changing former passage, thus the contradiction greatly improving distribution transformation speed and reduce in transformation.
Utility model content
The technical problems to be solved in the utility model is: based on the problems referred to above, provides a kind of rated voltage 10kV carbon fiber compound reinforced core aerial insulated cable.
The utility model solves the technical scheme that its technical problem adopts: a kind of rated voltage 10kV carbon fiber compound reinforced core aerial insulated cable, comprise the strengthening core being positioned at center, the insulating outer layer being surrounded on the conductive unit outside strengthening core and being wrapped in outside conductive unit from inside to outside successively, strengthening core is carbon fiber complex core, the soft aluminium of conductive unit to be some close-packed arrays be annular or common electrical aluminum steel side by side spiral winding form, the cross section of soft aluminium or common electrical aluminum steel is fan-shaped, and conductive unit is one deck or two-layer.
Further, insulating outer layer material is the weather proof insulation-grade black polyethylene of 20kV level or crosslinked polyethylene.
Further, the number of plies of conductive unit is one deck, and the radical of soft aluminium or common electrical aluminum steel is the six roots of sensation.
Further, the number of plies of conductive unit is two-layer, and the radical of the soft aluminium of internal layer or common electrical aluminum steel is the six roots of sensation, and the radical of outer soft aluminium or common electrical aluminum steel is ten.
Further, the corner of the fan-shaped outer surface of soft aluminium or common electrical aluminum steel is circular arc transition.
The beneficial effects of the utility model are: (1) resistance low capacity is large.Carbon fiber complex core aerial insulated cable adopts soft aluminium or electrician's aluminium conductor, and conductor material is made into molded line structure.Because carbon fiber complex core intensity is higher than steel core, thus diameter of mandrel is thinner than steel core, and open ended aluminum steel is many, and aluminum steel adopts sector crosssection, and arrangements of conductors is tightr, and therefore conductive section is large generally.Compared with general aerial cable, can effectively improve 29% current-carrying capacity, reduce transmission loss 6%.That is, 185mm is adopted
2wire can possess 240mm
2the transmission capacity of wire, and effectively can reduce the ferromagnetic loss of circuit;
(2) lightweight intensity is large.The density of carbon fiber complex core is about 1.9g/cm
3, proportion is about 1/4 of steel, and under identical external diameter, the aluminium sectional area of carbon fiber composite core cable is 1.29 times of conventional aerial insulated cable.Carbon fiber composite core cable unit weight 10-20% lighter than conventional aerial insulated cable.The hot strength of carbon fiber complex core is 2400MPa, is 1.97 times of general aerial insulated cable.Bear external force due to cable mainly contains core and bears, and carbon fiber complex core is compared steel wire and not only had lightweight, that intensity is high advantage, also substantially increases the Fracture Force of 30%.Therefore, carbon fiber complex core aerial insulated cable is applicable to all line conditions;
(3) sag characteristic is excellent.The coefficient of linear expansion of carbon fiber complex core is very low, is only 1.7 × 10
-6/ DEG C, much smaller than 11.5 × 10 of common steel core
-6/ DEG C.Therefore, the bulk expansion coefficient of the aerial insulated cable of carbon fiber complex core is adopted to be less than normal cable.That is, on the circuit of equal span, adopt carbon fiber complex core aerial insulated cable to have the little feature of sag, shaft tower height can be reduced.Can suitable amplifying circuit span, be particularly useful for the surrounding city circuit that safe distance is comparatively little over the ground;
(4) applied widely.The transformation of old line can be widely used in.Limit by conditions such as soil, shaft tower, sag, ampacitys, conventional wires or other wires cannot meet, and the aerial insulated cable of carbon fiber complex core can meet the capacity-increasing transformation (draw anharmonic ratio is large, ampacity is large, sag is little, without the need to transforming shaft tower) of old line because of many advantages.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is the structural representation of the embodiment of the present invention 2.
Wherein: 1. strengthening core, 2. conductive unit, 3. insulating outer layer.
Embodiment
By reference to the accompanying drawings the utility model is further described now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, and therefore it only shows the formation relevant with the utility model.
A kind of rated voltage 10kV carbon fiber compound reinforced core aerial insulated cable as shown in Figure 1, 2, comprise the strengthening core 1 being positioned at center, the insulating outer layer 3 being surrounded on the conductive unit 2 outside strengthening core 1 and being wrapped in outside conductive unit 2 from inside to outside successively, strengthening core 1 is carbon fiber complex core, the soft aluminium of conductive unit 2 to be some close-packed arrays be annular or common electrical aluminum steel side by side spiral winding form, the cross section of soft aluminium or common electrical aluminum steel is fan-shaped, and the number of plies of conductive unit 2 is one deck or two-layer.
Insulating outer layer 3 material is the weather proof insulation-grade black polyethylene of 20kV level or crosslinked polyethylene.
As Fig. 1 shows, the number of plies of conductive unit 2 is one deck, and the radical of soft aluminium or common electrical aluminum steel is the six roots of sensation.
As Fig. 2 shows, the number of plies of conductive unit 2 is two-layer, and the radical of the soft aluminium of internal layer or common electrical aluminum steel is the six roots of sensation, and the radical of outer soft aluminium or common electrical aluminum steel is ten.
The corner of the fan-shaped outer surface of soft aluminium or common electrical aluminum steel is circular arc transition.
The quality requirement of soft aluminium profiles line
Before strand system, soft aluminium profiles line used meets the related request of GB/T3955; Tensile strength meets 60MPa ~ 95MPa; When gauge length is 250mm, the percentage elongation after breaking is not less than 20.0%; Resistivity during 20 DEG C, soft aluminium profiles line is not more than 0.027367 Ω mm
2/ m (63%IACS); Its section physical dimension of soft aluminium profiles line meets designing requirement, actual measurement sectional area be not less than design section long-pending 98%, be also not more than 102%; When 20 DEG C, the density of soft aluminium is 2.703g/cm
3.
The quality requirement of carbon fiber compound reinforced core
Carbon fiber complex core adopts temperature grade A level or more rank plug, and meets the regulation of GB/T29234.Carbon fiber composite core rod surface rounding, bright and clean, level and smooth, color and luster are consistent, must not have with good industrial products disproportionate any defect (as concavo-convex, ring, crazing, crackle, be mingled with, resin buildup, hole, fiber are exposed, scratch and wearing and tearing etc.).When the tensile strength of carbon fiber composite core rod is 1 grade, its minimum tensile strength is 2100MPa, and when the tensile strength of carbon fiber composite core rod is 2 grades, its minimum tensile strength is 2400MPa.The density of carbon fiber composite core rod is not more than 2.0kg/dm
3, line density theory calculate composite core rod density value 2.0kg/dm
3.Carbon fiber composite core rod bears the radial pressure being not less than 30kN, does not ftracture and peel in its end.Carbon fiber composite core rod adopts A level and above temperature grade, and the long-term serviceability temperature that allows is greater than 120 DEG C.Carbon fiber composite core rod glass transition temperature DMA Tg is not less than 150 DEG C.
Embodiment 1
Annealed aluminum wire core crosslinked polyethylene light-duty thin insulating carbon fiber complex core carrying aerial cable, rated voltage 10kV, Dan Xin, carbon fiber complex core intensity 1 grade, temperature A level, conductor nominal cross 70mm
2, carbon fiber composite bearing core nominal cross 10mm
2, as Fig. 1 shows, the diameter of strengthening core 1 is 3.8mm, and the external diameter of conductive unit 2 is 10.5mm, and the external diameter of insulating outer layer 3 is 15.5mm.
Embodiment 2
Annealed aluminum wire core crosslinked polyethylene light-duty thin insulating carbon fiber complex core carrying aerial cable, rated voltage 10kV, Dan Xin, carbon fiber complex core intensity 1 grade, temperature A level, conductor nominal cross 250mm
2, carbon fiber composite bearing core nominal cross 28mm
2, as Fig. 2 shows, the diameter of strengthening core 1 is 6mm, and the external diameter of conductive unit 2 internal layer is 12.7mm, and the outer field external diameter of conductive unit 2 is 19.3mm, and the external diameter of insulating outer layer 3 is 24.3mm.
Following main performance test is carried out to aerial insulated cable:
1. the insulation resistance test of cable
Test is carried out on one-tenth dish cable.At room temperature, be dipped in water by cable and be no less than 1h, apply voltage (80 ~ 500V) direct voltage, temperature-time is not less than 1min, and is not more than 5min.The insulation resistance of common insulated structure cable is not less than 1500M Ω km, and the insulation resistance of light-duty thin insulating structural cable is not less than 1000M Ω km.
2. AC voltage test one
Test is carried out on one-tenth dish cable.At room temperature, be dipped in by cable in water and be no less than the after-applied test voltage of 1h, hold time as 1min, cable does not puncture.Common insulated structure cable test voltage is 18kV, and light-duty thin insulating structural cable test voltage is 12kV.
3. AC voltage test two
Except terminal, finished cable sample is no less than 5m, is immersed in the water by cable, and apply alternating voltage, hold time 4h, and in process of the test, insulation does not puncture.Common insulated structure cable test voltage is 18kV, and light-duty thin insulating structural cable test voltage is 12kV.During type approval test, sample should first through bend test.
4. bend test
Cable at room temperature, carries out bend test by JB/T10696.3 regulation.Bend test cylinder diameter is 20 (D+d) ± 5%, mm, and in formula, D is cable actual outside diameter, mm; D is conductor diameter, mm.
5. impulse voltage test and AC voltage test
Impulse voltage test is carried out on the sample of cable after bend test, and specimen length is not less than 5m, at room temperature 1h in immersion, and apply surge voltage, each 10 times of both positive and negative polarity, sample does not puncture.Common insulated structure cable surge voltage is 95kV, and light-duty thin insulating structural cable surge voltage is 75kV.
AC voltage test carries out on the sample of cable through impulse voltage test.At room temperature, apply alternating voltage 15min to sample, sample of cable does not puncture.Common insulated structure cable test voltage is 18kV, and light-duty thin insulating structural cable test voltage is 12kV.
6. the trace of resistance to electric leakage that insulate is tested
Under 4kV voltage, after 101 water sprays, surface is without burning, and leakage current is no more than 0.5A.
7. the specified pull-off force of cable
The pull test of cable is carried out on cable, and the pull-off force of cable is not less than the comprehensive breaking strength of carbon fiber compound reinforced core and soft aluminum conductor.
Carbon fiber compound reinforced core comprehensive breaking strength f1 adopts the product of composite core nominal area and its minimum tensile strength, and the pull-off force f2 of aluminum portions adopts the product of aluminium nominal area and aluminium single line minimum tensile strength.
The specified pull-off force f=f1+0.96f2 of cable.
8. the mechanical and physical performance that insulate is tested
7.9.12 regulation in insulation mechanical and physical performance agreement with experimental GB/T14049-2008.
9. the adhesion (slippage) that insulate is tested
10m cable is got 3 samples, and sample is put on a rotation slippage machine and is carried out, and its slippage power is not less than 180N.
10. insulate weather resistance test
Under air and light aging effect, sample is after 42d is aging, tensile strength and the rate of change of percentage elongation of insulation are no more than ± 30% scope, after 21d is aging test aging with 42d after sample contrast, the rate of change of war of resistance intensity and percentage elongation is no more than ± 15% scope.
Structure and the technical parameter of aerial insulated cable represent as follows:
The aerial insulated cable of carbon fiber complex core on probation in the old track remodelling of distribution, thus solve large cross line, in densely populated areas, the sag of circuit had to circuit and the political affairs place difficulty large regions track remodelling difficult problem of particular/special requirement, promote the engineered speed of distribution and effect.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on specification, must determine its technical scope according to right.
Claims (5)
1. a rated voltage 10kV carbon fiber compound reinforced core aerial insulated cable, it is characterized in that: comprise the strengthening core being positioned at center, the insulating outer layer being surrounded on the conductive unit outside strengthening core and being wrapped in outside conductive unit from inside to outside successively, strengthening core is carbon fiber complex core, the soft aluminium of conductive unit to be some close-packed arrays be annular or common electrical aluminum steel side by side spiral winding form, the cross section of soft aluminium or common electrical aluminum steel is fan-shaped, and the number of plies of conductive unit is one deck or two-layer.
2. rated voltage 10kV carbon fiber compound reinforced core aerial insulated cable according to claim 1, is characterized in that: described insulating outer layer material is the weather proof insulation-grade black polyethylene of 20kV level or crosslinked polyethylene.
3. rated voltage 10kV carbon fiber compound reinforced core aerial insulated cable according to claim 1, it is characterized in that: the number of plies of described conductive unit is one deck, the radical of soft aluminium or common electrical aluminum steel is the six roots of sensation.
4. rated voltage 10kV carbon fiber compound reinforced core aerial insulated cable according to claim 1, it is characterized in that: the number of plies of described conductive unit is two-layer, the radical of the soft aluminium of internal layer or common electrical aluminum steel is the six roots of sensation, and the radical of outer soft aluminium or common electrical aluminum steel is ten.
5. rated voltage 10kV carbon fiber compound reinforced core aerial insulated cable according to claim 1, is characterized in that: the corner of described soft aluminium or the fan-shaped outer surface of common electrical aluminum steel is circular arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520369251.7U CN204651071U (en) | 2015-06-01 | 2015-06-01 | Rated voltage 10kV carbon fiber compound reinforced core aerial insulated cable |
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|---|---|---|---|
| CN201520369251.7U CN204651071U (en) | 2015-06-01 | 2015-06-01 | Rated voltage 10kV carbon fiber compound reinforced core aerial insulated cable |
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| CN204651071U true CN204651071U (en) | 2015-09-16 |
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782839A (en) * | 2016-11-10 | 2017-05-31 | 过冬 | A kind of insulated aerial cable |
| CN106782838A (en) * | 2016-11-10 | 2017-05-31 | 过冬 | A kind of overhead transmission line |
-
2015
- 2015-06-01 CN CN201520369251.7U patent/CN204651071U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782839A (en) * | 2016-11-10 | 2017-05-31 | 过冬 | A kind of insulated aerial cable |
| CN106782838A (en) * | 2016-11-10 | 2017-05-31 | 过冬 | A kind of overhead transmission line |
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