CN201142240Y - Compound reinforced core overhead conductor - Google Patents
Compound reinforced core overhead conductor Download PDFInfo
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- CN201142240Y CN201142240Y CNU2007201852790U CN200720185279U CN201142240Y CN 201142240 Y CN201142240 Y CN 201142240Y CN U2007201852790 U CNU2007201852790 U CN U2007201852790U CN 200720185279 U CN200720185279 U CN 200720185279U CN 201142240 Y CN201142240 Y CN 201142240Y
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Abstract
The utility model relates to a composite reinforced core overhead conductor, which comprises a wire core with aluminum wires being coiled around the wire core. The composite reinforced core overhead conductor is characterized in that the diameter of the conductor is 16 to 40 mm; the wire core adopts a resin matrix composite material core rod, 2 to 4 layers of electrical annealed aluminum wires are coiled around the core rod in a layered manner, and the cross section of the aluminum wire is circular or profiled. The core rod is made of carbon fiber as the central layer and fiber glass coated outside the core rod, and is formed through soaking and solidifying processes of thermosetting resin, the diameter of the core rod is 6.3 to 8.49 mm, wherein the carbon fiber and the fiber glass are continuous, and the weight percentage of the carbon fiber in the core rod is 30 to 50 percent. The tensile force of the composite reinforced core overhead conductor matches with that of the common steel-cored aluminum strand wire, the dead weight is reduced, the sag change of the conductor is reduced, the conductor can be produced according to the maximum operating temperature and the tensile force index of the conductor, therefore, the reasonable price is realized so as to meet the various requirements of the newly-built line and the old line reconstruction.
Description
Technical field
The utility model relates to the lead that uses in a kind of field of overhead power transmission lines, particularly relate to a kind of sag change little, intensity is high, corrosion-resistant, transmission line capability compound strengthening core aerial condutor greatly, be to the improvement of existing metal-cored aluminium stranded conductor structure, belong to the H01B cable in the IPC International Patent Classification (IPC); Conductor; Insulator; The selection technical field of the conduction of material, insulation or dielectric property.
Background technology
Transmission line wire extensively adopts steel reinforced aluminium conductor for a long time.Wherein steel core mainly plays the load effect, and aluminum steel mainly plays the transmission of electric energy effect.Because the thermal coefficient of expansion of steel and aluminium is bigger, the lead sag increases along with the rising of temperature, particularly when conductor temperature reaches maximum permissible service temperature (ordinary circumstance is+70 ℃), sag also reaches threshold limit value, this moment is if increase transmits electric power again, because of the undue increase of lead sag may cause circuit to being crossed over the fault of thing discharge.In addition,, be subjected to weather (as driving rain, snow) and environmental impact, disconnection fault easily takes place because its tensile strength is limited.For newly-built or improvement project, because steel reinforced aluminium conductor weight is bigger, cause the shaft tower load to increase, project cost is risen.There is the antiseptic power of this type lead steel core relatively poor again, has influence on its useful life.
For operating temperature and the bearing capacity that improves lead, the scientific worker has carried out number of research projects both at home and abroad, has successively developed big combined capacity twisted wire such as steel core heat-resisting aluminium alloy twisted wire, steel core superalloy twisted wire, aluminium Baogang core heat-resisting aluminium alloy twisted wire, steel core high-strength heat-resisting aluminum-alloy twisted wire, invar core low arc drop superalloy twisted wire.Also developed such as type leads such as clearance type lead, expanded conductors by improving the conductor structure pattern in addition, and obtained to use in certain limit.More than various lead mainly be that the common steel core that in the past used is changed into the steel alloy that contains rare metal, perhaps manage to improve the heat resistance of electrical aluminium wire, perhaps change the conductor structure pattern, these all can make the physical property of lead improve.But the consequence of bringing thus is the not only weight that has not to be reduced, instead increase, price also significantly improves, even reach several times, tens times of plain conductor, the lead that has is because of structure becomes more complicated, not only is difficult to guarantee the quality of constructing also increased the difficulty of construction.
The utility model content
The purpose of this utility model is to overcome the prior art above shortcomings, and the shortcoming at existing metal-cored aluminium stranded conductor structure provides a kind of novel compound strengthening core aerial condutor.Compound reinforced core, the core of this compound strengthening core aerial condutor employing carbon fiber polymer twists the version around electrician's annealed aluminum wire on every side, can make lead according to lead maximum operating temperature and pull-off force index request, thereby the realization reasonable price is to satisfy the various needs of newly-built circuit, old track remodelling.The pull-off force of this type lead and ordinary steel core aluminum stranded wire be (bigger than ordinary steel core aluminum stranded wire by the pull-off force after the mandril strength calculating) quite, and deadweight reduces, and the lead sag changes and reduces.Can be when therefore, conducting transmission line designs with the coefficient of safety of lead
By minimum 2.5 bring up to 3.0 and more than, not only improved the reliability of circuit, and reach sag change little, intensity is high, corrosion-resistant, transmission line capability goal of the invention greatly.
The technical scheme that the utility model provides is: this compound strengthening core aerial condutor, include core, strand is wound with aluminum steel around this core, the diameter that is characterized in described lead is 16～40mm, described core is 1 polymer matrix composites plug that contains carbon fiber, glass fibre, the layering strand is around 2～4 layers of electrician's annealed aluminum wire around this plug, and wherein said aluminum steel section is circular or special-shaped.
For better finishing the purpose of this utility model, described composite material plug, be to be central core, the outside glass fibre that coats with the carbon fiber, and through the formed circular composite material plug of thermosetting resin infiltration cured, diameter is 6.3～8.49mm, wherein carbon fiber and glass fibre are continuous, and the percentage by weight of institute's carbon fiber-containing is 30%～50% in the plug.
For better finishing the purpose of this utility model, the diameter of composite material plug is 6.3～8.4mm preferably, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, basis material is an epoxy resin, glass transition temperature (Tg) is divided into 120～130 ℃, 150～160 ℃, 180～190 ℃, 220～230 ℃ four kinds of situations, its safe operation temperature is divided into≤100 ℃, 130 ℃, 160 ℃, 200 ℃ four grades, and its tensile strength is in 1880～2706MPa scope.
In the time of diameter 6.3mm, safe operation temperature≤100 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, and glass transition temperature (Tg) is 120～130 ℃, and its tensile strength is divided into 1907,2427, the 2677MPa Three Estate.
In the time of diameter 6.3mm, safe operation temperature≤130 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, and glass transition temperature (Tg) is 150～160 ℃, and its tensile strength is divided into 1907,2427, the 2677MPa Three Estate.
In the time of diameter 6.3m, safe operation temperature≤160 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, and glass transition temperature (Tg) is 180～190 ℃, and its tensile strength is divided into 1907,2427, the 2677MPa Three Estate.
In the time of diameter 6.3mm, safe operation temperature≤200 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, and glass transition temperature (Tg) is 220～230 ℃, and its tensile strength is divided into 1907,2427, the 2677MPa Three Estate.
In the time of diameter 7.5mm, safe operation temperature≤100 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, and glass transition temperature (Tg) is 120～130 ℃, and its tensile strength is divided into 1880,2088,2353, four grades of 2706MPa.
In the time of diameter 7.5mm, safe operation temperature≤130 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, and glass transition temperature (Tg) is 150～160 ℃, and its tensile strength is divided into 1880,2088,2353, four grades of 2706MPa.
In the time of diameter 7.5mm, safe operation temperature≤160 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, and glass transition temperature (Tg) is 180～190 ℃, and its tensile strength is divided into 1880,2088,2353, four grades of 2706MPa.
In the time of diameter 7.5mm, safe operation temperature≤200 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, and glass transition temperature (Tg) is 220～230 ℃, and its tensile strength is divided into 1880,2088,2353, four grades of 2706MPa.
In the time of diameter 8.4mm, safe operation temperature≤100 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, and glass transition temperature (Tg) is 120～130 ℃, and its tensile strength is divided into 2313,2441, the 2684MPa Three Estate.
In the time of diameter 8.4mm, safe operation temperature≤130 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, and glass transition temperature (Tg) is 150～160 ℃, and its tensile strength is divided into 2313,2441, the 2684MPa Three Estate.
In the time of diameter 8.4mm, safe operation temperature≤160 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, and glass transition temperature (Tg) is 180～190 ℃, and its tensile strength is divided into 2313,2441, the 2684MPa Three Estate.
In the time of diameter 8.4mm, safe operation temperature≤200 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, and glass transition temperature (Tg) is 220～230 ℃, and its tensile strength is divided into 2313,2441, the 2684MPa Three Estate.
For better finishing the purpose of this utility model, described aluminum steel is the annealing annealed aluminum wire, and wherein conductance is not less than 63%IACS, and percentage elongation is not less than 20%, the electricalresistivity
20≤ 0.0274 Ω mm
2/ m, modulus of elasticity is 44000MPa, and tensile strength is about 84.0MPa, and allowable temperature (continuously) is 200 ℃, and thermal coefficient of expansion is 23 * 10
-61/ ℃.
In the utility model, described aluminum steel forms the aluminium single line with definite shape and size with the drawing at normal temperatures of general mould, and for example, the shape of aluminium single line has line styles such as round wire, ladder track; Described compound strengthening core aerial condutor, gauge serves as according to determining with the aluminum steel cross section, comprise 185～720 all sizes, the lead that the size of lead and mechanical property and GB/T 1179, GB/T 20141 are recommended is basic identical, can satisfy the needs of electric power system lead commonly used.
The technical scheme that the utility model provides is: the preparation method of this compound strengthening core aerial condutor is: at first prepare the compound reinforced core of carbon fiber polymer, this core is with the carbon fiber wire of continuous some and glass fiber soaks into through thermosetting resin and core is made in curing, wire core diameter is 6.3～8.49mm, then the annealed aluminum wire layering is twisted on core.Diameter of wire is 16～40mm, and overall dimension is identical with existing GB GB/T 1179-1999 " circle line concentric gallows empty conductor " and GB/T 20141-2006 " molded lines concentric gallows empty conductor ".
Compared with prior art, the beneficial effects of the utility model are: compound reinforced core, the core of employing carbon fiber polymer twists the version around electrician's annealed aluminum wire on every side, can make lead according to lead maximum operating temperature and pull-off force index request, thereby the realization reasonable price is to satisfy the various needs of newly-built circuit, old track remodelling.The pull-off force of this type lead is suitable with the ordinary steel core aluminum stranded wire, and deadweight reduces, and the lead sag changes and reduces.Therefore, conducting transmission line when design can with the coefficient of safety of lead can by minimum 2.5 bring up to 3.0 and more than, not only improved the reliability of circuit, and reach sag change little, intensity is high, corrosion-resistant, transmission line capability goal of the invention greatly.
Description of drawings:
A kind of core that Fig. 1 provides for the utility model is for circular, and the conductor aluminum steel is the structural representation of trapezoidal embodiment;
A kind of core that Fig. 2 provides for the utility model is for circular, and conductor aluminum steel intermediate layer is trapezoidal, the outermost layer structural representation for circular embodiment;
Fig. 3 is circle for a kind of core that the utility model provides, and the conductor aluminum steel also is the structural representation of the embodiment of circle.
Embodiment:
As Fig. 1～shown in Figure 3, this compound strengthening core aerial condutor, include 1 polymer matrix composites plug 1 that contains carbon fiber, glass fibre, the layering strand is around 2～4 layers of electrician's annealed aluminum wire around this plug 1, wherein said aluminum steel section is circular 2 or trapezoidal 3, the diameter of wherein said lead is 16～35mm, described plug 1 diameter is 6～9mm, the percentage by weight of institute's carbon fiber-containing is 35%～45% in the plug 1, described aluminum steel is the annealing annealed aluminum wire, its conductance is not less than 63%IACS, and percentage elongation is not less than 20%, the electricalresistivity
20≤ 0.0274 Ω mm
2/ m, modulus of elasticity is 56000MPa, and tensile strength is about 84.0MPa, and allowable temperature (continuously) is 190 ℃, and thermal coefficient of expansion is 23 * 10
-61/ ℃.
During preparation the utility model, be central core with the carbon fiber earlier, the outside glass fibre that coats is the round mandrel of 6～9mm by the diameter that resin soaks into and cured is made, carbon fiber and glass fibre are continuous in the plug, and the percentage by weight of institute's carbon fiber-containing is 30%～50%;
Require to select for use round aluminum rod according to properties of product again, carry out drawing at normal temperatures and form aluminium single line with certain geometrical shape and size, then need be to special-shaped line by special die for drawing tool and corresponding processing technology, the aluminium single line can be molded lines such as circle, trapezoidal, " Z " font, carry out the production of softening process then, the tensile strength of softening back aluminium single line is about 84.0MPa, percentage elongation is about 20%, allowable temperature (continuously) is not less than 200 ℃, modulus of elasticity is 44000MPa, and thermal coefficient of expansion is 23 * 10
-61/ ℃;
At last, be core with above-mentioned plug, layering is twisted around soft aluminium round wire of soft aluminium or molded lines, makes the lead shown in accompanying drawing 1～accompanying drawing 3, and the external diameter of lead is 16～40mm, and the aluminum steel total cross-sectional area is 185～630 (720) mm
2, conductance 〉=63%IACS is according to the actual conditions of circuit operation, the comprehensive breaking strength of the utility model lead proposes with reference to the GB1179 standard, when surpassing the transition point temperature, the pull-off force of lead is born by compound strengthening core, and concrete pull-off force numerical value is different because of wire gauge.
The utility model can be made lead according to lead maximum operating temperature and pull-off force index request, can make that can to satisfy maximum operating temperature be four kinds of thermal endurance classs such as 100 ℃, 130 ℃, 160 ℃, 200 ℃, in every kind of thermal endurance class, the tensile strength of core under hot conditions is in 1880～2706MPa scope, thereby form complete specification series product, the concrete parameter 1～table 4 of tabulating as follows:
Table 1: compound strengthening core aerial condutor technical parameter (100 ℃)
Table 1: compound strengthening core aerial condutor technical parameter (100 ℃) (continuing)
| Specification | Modulus of elasticity MPa | Weight kg/km | Specified stretching resistance is not less than kN | Ampacity A | 20 ℃ of D.C. resistances are not more than Ω/km |
| 185 | 53100 | 605.45 | 59.42 | 712 | Modulus of elasticity MPa |
| 240 | 51200 | 768.79 | 75.62 | 824 | |
| 240 | 53800 | 793.61 | 83.37 | 824 | 53100 |
| 300 | 49900 | 947.21 | 83.41 | 960 | 51200 |
| 300 | 52100 | 972.17 | 92.22 | 960 | 53800 |
| 400 | 50200 | 1269.33 | 103.90 | 1151 | 49900 |
| 400 | 51700 | 1210.26 | 123.40 | 1107 | 52100 |
| 400 | 51700 | 1291.02 | 135.20 | 1151 | 50200 |
| 500 | 49100 | 1541.69 | 119.50 | 1315 | 51700 |
| 500 | 50300 | 1567.07 | 128.10 | 1315 | 51700 |
| 630 | 49100 | 1953.06 | 148.70 | 1483 | 49100 |
Annotate: the coefficient of linear expansion of compound strengthening core is 1.6 * 10
-61/ ℃, modulus of elasticity is 113000MPa; The coefficient of linear expansion of aluminium is 23 * 10
-61/ ℃, modulus of elasticity is 44000MPa.
Table 2: compound strengthening core aerial condutor technical parameter (130 ℃)
Table 2: compound strengthening core aerial condutor technical parameter (130 ℃) (continuing)
| Specification | Modulus of elasticity MPa | Weight kg/km | Specified stretching resistance is not less than kN | Ampacity A | 20 ℃ of D.C. resistances are not more than Ω/km |
| 185 | 53100 | 605.45 | 59.42 | 848 | 0.13794 |
| 240 | 51200 | 768.79 | 75.62 | 1006 | 0.10632 |
| 240 | 53800 | 793.61 | 83.37 | 1006 | 0.10610 |
| 300 | 49900 | 947.21 | 83.41 | 1149 | 0.08503 |
| 300 | 52100 | 972.17 | 92.22 | 1149 | 0.08488 |
| 400 | 50200 | 1269.33 | 103.90 | 1382 | 0.06368 |
| 400 | 51700 | 1210.26 | 123.40 | 1328 | 0.06788 |
| 400 | 51700 | 1291.02 | 135.20 | 1382 | 0.06361 |
| 500 | 49100 | 1541.69 | 119.50 | 1583 | 0.05094 |
| 500 | 50300 | 1567.07 | 128.10 | 1583 | 0.05093 |
| 630 | 49100 | 1953.06 | 148.70 | 1768 | 0.04044 |
Annotate: the coefficient of linear expansion of compound strengthening core is 1.6 * 10
-61/ ℃, modulus of elasticity is 113000MPa; The coefficient of linear expansion of aluminium is 23 * 10
-61/ ℃, modulus of elasticity is 44000MPa.
Table 3: compound strengthening core aerial condutor technical parameter (160 ℃)
Annotate: the coefficient of linear expansion of compound strengthening core is 1.6 * 10
-61/ ℃, modulus of elasticity is 113000MPa; The coefficient of linear expansion of aluminium is 23 * 10
-61/ ℃, modulus of elasticity is 44000MPa.
| Specification | Modulus of elasticity MPa | Weight kg/km | Specified stretching resistance is not less than kN | Ampacity A | 20 ℃ of D.C. resistances are not more than Ω/km |
| 185 | 53100 | 605.45 | 59.42 | 962 | 0.13794 |
| 240 | 51200 | 768.79 | 75.62 | 1142 | 0.10632 |
| 240 | 53800 | 793.61 | 83.37 | 1142 | 0.10610 |
| 300 | 49900 | 947.21 | 83.41 | 1306 | 0.08503 |
| 300 | 52100 | 972.17 | 92.22 | 1306 | 0.08488 |
| 400 | 50200 | 1269.33 | 103.90 | 1575 | 0.06368 |
| 400 | 51700 | 1210.26 | 123.40 | 1512 | 0.06788 |
| 400 | 51700 | 1291.02 | 135.20 | 1575 | 0.06361 |
| 500 | 49100 | 1541.69 | 119.50 | 1806 | 0.05094 |
| 500 | 50300 | 1567.07 | 128.10 | 1806 | 0.05093 |
| 630 | 49100 | 1953.06 | 148.70 | 2041 | 0.04044 |
Table 3: compound strengthening core aerial condutor technical parameter (160 ℃) (continuing)
Table 4: compound strengthening core aerial condutor technical parameter (200 ℃)
Annotate: the coefficient of linear expansion of compound strengthening core is 1.6 * 10
-61/ ℃, modulus of elasticity is 113000MPa; The coefficient of linear expansion of aluminium is 23 * 10
-61/ ℃, modulus of elasticity is 44000MPa.
Table 4: compound strengthening core aerial condutor technical parameter (200 ℃) (continuing)
| Specification | Modulus of elasticity MPa | Weight kg/km | Specified stretching resistance is not less than kN | Ampacity A | 20 ℃ of D.C. resistances are not more than Ω/km |
| 185 | 53100 | 605.45 | 59.42 | 1093 | 0.13794 |
| 240 | 51200 | 768.79 | 75.62 | 1300 | 0.10632 |
| 240 | 53800 | 793.61 | 83.37 | 1300 | 0.10610 |
| 300 | 49900 | 947.21 | 83.41 | 1489 | 0.08503 |
| 300 | 52100 | 972.17 | 92.22 | 1489 | 0.08488 |
| 400 | 50200 | 1269.33 | 103.90 | 1799 | 0.06368 |
| 400 | 51700 | 1210.26 | 123.40 | 1726 | 0.06788 |
| 400 | 51700 | 1291.02 | 135.20 | 1799 | 0.06361 |
| 500 | 49100 | 1541.69 | 119.50 | 2066 | 0.05094 |
| 500 | 50300 | 1567.07 | 128.10 | 2066 | 0.05093 |
| 630 | 49100 | 1953.06 | 148.70 | 2337 | 0.04044 |
Claims (6)
1. compound strengthening core aerial condutor, include core, strand is wound with aluminum steel around this core, the diameter that it is characterized in that described lead is 16～40mm, described core is 1 and contains carbon fiber, the polymer matrix composites plug of glass fibre, the layering strand is around 2～4 layers of electrician's annealed aluminum wire around this plug, wherein the aluminum steel section is circular or special-shaped, described composite material plug, be to be central core with the carbon fiber, the outside glass fibre that coats, and through the formed circular composite material plug of thermosetting resin infiltration cured, diameter is 6.3～8.49mm, wherein carbon fiber and glass fibre are continuous, and the percentage by weight of institute's carbon fiber-containing is 30%～50% in the plug.
2. compound strengthening core aerial condutor according to claim 1, it is characterized in that the diameter of composite material plug is 6.3～8.4mm preferably, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, basis material is an epoxy resin, glass transition temperature (Tg) is divided into 120～130 ℃, 150～160 ℃, 180～190 ℃, 220～230 ℃ four kinds of situations, its safe operation temperature is divided into≤100 ℃, 130 ℃, 160 ℃, 200 ℃ four grades, and its tensile strength is in 1880～2706MPa scope.
3. compound strengthening core aerial condutor according to claim 2, when it is characterized in that preferably the diameter of composite material plug is 6.3mm, safe operation temperature≤100 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, glass transition temperature (Tg) is 120～130 ℃ or 150～160 ℃ or 180～190 ℃ or 220～230 ℃, and its tensile strength is divided into 1907,2427, the 2677MPa Three Estate.
4. compound strengthening core aerial condutor according to claim 2, when it is characterized in that preferably the diameter of composite material plug is 7.5mm, safe operation temperature≤100 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, glass transition temperature (Tg) is 120～130 ℃ or 150～160 ℃ or 180～190 ℃ or 220～230 ℃, and its tensile strength is divided into 1880,2088,2353, four grades of 2706MPa.
5. compound strengthening core aerial condutor according to claim 2, when it is characterized in that preferably the diameter of composite material plug is 8.4mm, safe operation temperature≤100 ℃, the percentage by weight of institute's carbon fiber-containing is 30%～50% in its plug, glass transition temperature (Tg) is 120～130 ℃ or 150～160 ℃ or 180～190 ℃ or 220～230 ℃, and its tensile strength is divided into 2313,2441, the 2684MPa Three Estate.
6. compound strengthening core aerial condutor according to claim 1 is characterized in that described aluminum steel is the annealing annealed aluminum wire, and wherein conductance is not less than 63%IACS, and percentage elongation is not less than 20%, the electricalresistivity
20≤ 0.0274 Ω mm
2/ m, modulus of elasticity is 44000MPa, and tensile strength is about 84.0MPa, and allowable temperature (continuously) is 200 ℃, and thermal coefficient of expansion is 23 * 10
-61/ ℃.
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