CN204215733U - Times capacity overhead wire - Google Patents
Times capacity overhead wire Download PDFInfo
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- CN204215733U CN204215733U CN201420653606.0U CN201420653606U CN204215733U CN 204215733 U CN204215733 U CN 204215733U CN 201420653606 U CN201420653606 U CN 201420653606U CN 204215733 U CN204215733 U CN 204215733U
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Abstract
The utility model discloses a kind of times capacity overhead wire, aim to provide little, the corrosion resistance and good of a kind of sag change, heat resistance is good, at high temperature can transmit big current, thus in the situation of same conductor cross section, improve times capacity overhead wire of the current capacity of transmission.It comprises aluminium bag invar steel core and is stranded in the heat resistant aluminum alloy wire layer outside aluminium bag invar steel core, described heat resistant aluminum alloy wire layer is successively stranded in the first heat resistant aluminum alloy wire layer outside aluminium bag invar steel core by from-inner-to-outer, the second heat resistant aluminum alloy wire layer and the 3rd heat resistant aluminum alloy wire layer are formed.
Description
Technical field
The utility model relates to a kind of cable, is specifically related to a kind of times capacity overhead wire.
Background technology
Wire common in aerial condutor has aluminium stranded conductor, steel reinforced aluminium conductor and steel-aluminum wire etc., wherein common with the application of steel reinforced aluminium conductor again.Steel reinforced aluminium conductor usually by steel core and single or multiple lift aluminium circle aluminium stranded conductor from-inner-to-outer successively the system of twisting form, wherein steel core mainly plays a part to gain in strength, and aluminium stranded conductor mainly plays a part to transmit electric energy; And circular aluminum twisted wire in stranding process due to technical reason, the gap between aluminium stranded conductor and aluminium stranded conductor is comparatively large, makes conductor compacting coefficient low, and when causing same conductor sectional area, cable profile size becomes large, reduces line security reliability of operation; Especially at the extreme natural environment section of power transmission engineering, wire is as produced icing, and in same ice covering thickness situation, wire diameter increases, and will increase the icing weight of wire greatly, and have a strong impact on line security reliability of operation.
On the other hand, usually adopt conventional aluminium material in current aerial condutor, this just determines the transmittability of current aerial condutor; Permission transmission capacity (ampacity) due to circuit depends on the ability of conductor tolerable temperature, the conductor temperature of ordinary steel core aluminum stranded wire LGJQ-240 when operating current is 382A is 60 degree, conductor temperature when conductor current increases to 596A is 70 degree, when electric current is elevated to 867A again, the temperature of conductor reaches 90 degree; Caused by material, the serviceability temperature of common steel reinforced aluminium conductor is 80 degree, and due to power grid security restriction, during Long-Time Service, temperature can only reach 70 degree of-90 degree, and thus transmission line capability is affected.
Such as, China Patent Publication No. CN202816406U, publication date on March 20th, 2013, the name of innovation and creation is called a kind of extra-heavy steel core aluminum alloy stranded wire, by steel core first internal layer, steel core second internal layer, steel core the 3rd internal layer, aluminium bag first is outer, aluminium bag second is outer, aluminium bag the 3rd skin forms, and described steel core second internal layer, steel core the 3rd internal layer, aluminium bag first are outer, aluminium bag second is outer, aluminium bag the 3rd skin is successively wrapped in outside steel core first internal layer successively.There is above-mentioned deficiency equally in the extra-heavy steel core aluminum alloy stranded wire of this application case.
Utility model content
First object of the present utility model is to overcome deficiency of the prior art, a kind of sag is provided to change little, heat resistance is good, at high temperature can transmit big current, thus in the situation of same conductor cross section, improve times capacity overhead wire of the current capacity of transmission.
Second object of the present utility model is to overcome deficiency of the prior art, a kind of reasonable in design is provided, is easy to produce, and have and higher press coefficient, in the situation of same conductor cross section, improve cross section utilance, reduce conductor size, improve times capacity overhead wire of line security operational reliability.
The technical solution of the utility model is:
A kind of times capacity overhead wire, comprise aluminium bag invar steel core and be stranded in the heat resistant aluminum alloy wire layer outside aluminium bag invar steel core, described heat resistant aluminum alloy wire layer is successively stranded in the first heat resistant aluminum alloy wire layer outside aluminium bag invar steel core by from-inner-to-outer, the second heat resistant aluminum alloy wire layer and the 3rd heat resistant aluminum alloy wire layer are formed;
Described first heat resistant aluminum alloy wire layer is made up of the first heat-resisting main aluminium alloy wire layer be stranded in outside aluminium bag invar steel core and the first heat-resisting secondary aluminium alloy wire layer be stranded in outside the first heat-resisting main aluminium alloy wire layer, and described first heat-resisting main aluminium alloy wire layer is identical with the direction of lay of the first heat-resisting secondary aluminium alloy wire layer; First heat-resisting main aluminium alloy wire layer is made up of some circular the first heat-resisting main aluminium alloy wires, first heat-resisting secondary aluminium alloy wire layer is made up of some circular the first heat-resisting secondary aluminium alloy wires, the quantity of the first heat-resisting main aluminium alloy wire is identical with the quantity of the first heat-resisting secondary aluminium alloy wire, and is respectively equipped with a first heat-resisting secondary aluminium alloy wire between adjacent two first heat-resisting main aluminium alloy wires; The external diameter of described first heat-resisting secondary aluminium alloy wire is less than the external diameter of the first heat-resisting main aluminium alloy wire; Described second heat resistant aluminum alloy wire layer is made up of the second heat-resisting main aluminium alloy wire layer be stranded in outside the first heat resistant aluminum alloy wire layer and the second heat-resisting secondary aluminium alloy wire layer be stranded in outside the second heat-resisting main aluminium alloy wire layer, and described second heat-resisting main aluminium alloy wire layer is identical with the direction of lay of the second heat-resisting secondary aluminium alloy wire layer; Second heat-resisting main aluminium alloy wire layer is made up of some circular the second heat-resisting main aluminium alloy wires, second heat-resisting secondary aluminium alloy wire layer is made up of some circular the second heat-resisting secondary aluminium alloy wires, the quantity of the second heat-resisting main aluminium alloy wire is identical with the quantity of the second heat-resisting secondary aluminium alloy wire, and is respectively equipped with a second heat-resisting secondary aluminium alloy wire between adjacent two second heat-resisting main aluminium alloy wires; The external diameter of described second heat-resisting secondary aluminium alloy wire is less than the external diameter of the second heat-resisting main aluminium alloy wire; Described 3rd heat resistant aluminum alloy wire layer is made up of the 3rd heat-resisting main aluminium alloy wire layer be stranded in outside the second heat resistant aluminum alloy wire layer and the 3rd heat-resisting secondary aluminium alloy wire layer be stranded in outside the 3rd heat-resisting main aluminium alloy wire layer, and described 3rd heat-resisting main aluminium alloy wire layer is identical with the direction of lay of the 3rd heat-resisting secondary aluminium alloy wire layer; 3rd heat-resisting main aluminium alloy wire layer is made up of some articles of circular the 3rd heat-resisting main aluminium alloy wires, 3rd heat-resisting secondary aluminium alloy wire layer is made up of some articles of circular the 3rd heat-resisting secondary aluminium alloy wires, the quantity of the 3rd heat-resisting main aluminium alloy wire is identical with the quantity of the 3rd heat-resisting secondary aluminium alloy wire, and is respectively equipped with one article of the 3rd heat-resisting secondary aluminium alloy wire between adjacent two the 3rd heat-resisting main aluminium alloy wires; The external diameter of described 3rd heat-resisting secondary aluminium alloy wire is less than the external diameter of the 3rd heat-resisting main aluminium alloy wire.
Heart yearn due to the aerial condutor of this programme adopts aluminium bag invar steel core, and aluminium bag invar material thermal expansion coefficient only has 1/3rd of steel, and therefore sag change is very little; Aluminium bag invar material can tolerate more than 400 DEG C high temperature simultaneously, and has good corrosion resistance.
Conductor due to the aerial condutor of this programme is heat resistant aluminum alloy wire layer, and the long continuous operation temperature of heat-resistant aluminium alloy material can bring up to more than 230 DEG C, and (Long-term service temperature of ordinary steel core aluminum stranded wire is 80 DEG C), at high temperature can transmit big current; Conductance reaches more than 60% simultaneously, thus improves the current capacity of transmission in the situation of same conductor cross section; The current capacity transmitted in the situation of same conductor cross section of times capacity overhead wire of this programme is equivalent to more than the twice of plain conductor.
Due in this programme owing to filling up the gap between adjacent two first, second or the 3rd heat-resisting main aluminium alloy wires by first, second or the 3rd heat-resisting secondary aluminium alloy wire in first, second and third heat resistant aluminum alloy wire layer, thus effective improve heat-resisting aluminium alloy core-wire layer press coefficient, improve cross section utilance, reduce conductor size, improve line security reliability of operation; And due to first, the heat-resisting secondary aluminium alloy wire layer of second and third heat resistant aluminum alloy wire layer is stranded in outside heat-resisting main aluminium alloy wire layer, the heat-resisting secondary aluminium alloy wire layer of same layer heat resistant aluminum alloy wire layer is identical with the direction of lay of heat-resisting main aluminium alloy wire layer, and is respectively equipped with a heat-resisting secondary aluminium alloy wire between adjacent two heat-resisting main aluminium alloy wires; Groove strand between adjacent two heat-resisting main aluminium alloy wires can make when stranded heat-resisting secondary aluminium alloy wire like this, be convenient to actual production and make.
As preferably, the adjacent two first heat-resisting main aluminium alloy wires in the first heat-resisting main aluminium alloy wire layer are bonded to each other; Adjacent two second heat-resisting main aluminium alloy wires in second heat-resisting main aluminium alloy wire layer are bonded to each other; Adjacent two the 3rd heat-resisting main aluminium alloy wires in 3rd heat-resisting main aluminium alloy wire layer are bonded to each other.What this programme structure can improve aerial condutor presses coefficient.
As preferably, the first heat resistant aluminum alloy wire layer is contrary with the direction of lay of the second heat resistant aluminum alloy wire layer, and the second heat resistant aluminum alloy wire layer is contrary with the direction of lay of the 3rd heat resistant aluminum alloy wire layer.What this programme structure can improve aerial condutor presses coefficient and structural stability.
As preferably, aluminium bag invar steel core is made up of the outer aluminium bag invar steel core molded line of the circle outside the center aluminium bag invar steel core molded line of circle and some stranded center aluminium bag invar steel core molded line.
As preferably, center aluminium bag invar steel core molded line is made up of invar silk and the aluminium coating layer be coated on outside invar silk, and outer aluminium bag invar steel core molded line is made up of invar silk and the aluminium coating layer be coated on outside invar silk.
As preferably, the quantity of the first heat-resisting main aluminium alloy wire is 10, and the quantity of the second heat-resisting main aluminium alloy wire is 16, and the quantity of the 3rd heat-resisting main aluminium alloy wire is 22 articles.
As preferably, the external diameter of first, second and third heat-resisting main aluminium alloy wire is identical.
As preferably, the external diameter of first, second and third heat-resisting secondary aluminium alloy wire is identical.
The beneficial effects of the utility model are:
One, little, the corrosion resistance and good of sag change, heat resistance is good, at high temperature can transmit big current, thus improves the current capacity of transmission in the situation of same conductor cross section.
Its two, there is reasonable in design, be easy to produce, and have and higher press coefficient, in the situation of same conductor cross section, improve cross section utilance, reduce conductor size, improve the feature of line security reliability of operation.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
In figure: aluminium bag invar steel core 1, the heat-resisting secondary aluminium alloy wire layer 22 of first heat resistant aluminum alloy wire layer the 2, first heat-resisting main aluminium alloy wire layer 21, first, heat-resisting secondary aluminium alloy wire layer the 32, three heat resistant aluminum alloy wire layer 4 of second heat resistant aluminum alloy wire layer the 3, second heat-resisting main aluminium alloy wire layer 31, second, the 3rd heat-resisting main aluminium alloy wire layer 41, the 3rd heat-resisting secondary aluminium alloy wire layer 42.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
As shown in Figure 1, a kind of times of capacity overhead wire heat resistant aluminum alloy wire layer that comprises aluminium bag invar steel core 1 and be stranded in outside aluminium bag invar steel core.Aluminium bag invar steel core is made up of the outer aluminium bag invar steel core molded line outside the center aluminium bag invar steel core molded line of circle and 6 stranded center aluminium bag invar steel core molded line.The cross section of center aluminium bag invar steel core molded line and outer aluminium bag invar steel core molded line is circle.Center aluminium bag invar steel core molded line is made up of invar silk and the aluminium coating layer be coated on outside invar silk.Outer aluminium bag invar steel core molded line is made up of invar silk and the aluminium coating layer be coated on outside invar silk.
Heat resistant aluminum alloy wire layer is successively stranded in the first heat resistant aluminum alloy wire layer 2, second heat resistant aluminum alloy wire layer 3 outside aluminium bag invar steel core by from-inner-to-outer and the 3rd heat resistant aluminum alloy wire layer 4 is formed.
First heat resistant aluminum alloy wire layer 2 is made up of the first heat-resisting main aluminium alloy wire layer 21 be stranded in outside aluminium bag invar steel core and the first heat-resisting secondary aluminium alloy wire layer 22 be stranded in outside the first heat-resisting main aluminium alloy wire layer.First heat-resisting main aluminium alloy wire layer is identical with the direction of lay of the first heat-resisting secondary aluminium alloy wire layer.First heat-resisting main aluminium alloy wire layer is made up of some circular the first heat-resisting main aluminium alloy wires, and the quantity of the in the present embodiment first heat-resisting main aluminium alloy wire is 10.First heat-resisting secondary aluminium alloy wire layer is made up of some circular the first heat-resisting secondary aluminium alloy wires.The quantity of the first heat-resisting main aluminium alloy wire is identical with the quantity of the first heat-resisting secondary aluminium alloy wire, and is respectively equipped with a first heat-resisting secondary aluminium alloy wire between adjacent two first heat-resisting main aluminium alloy wires.The external diameter of the first heat-resisting secondary aluminium alloy wire is less than the external diameter of the first heat-resisting main aluminium alloy wire.
Second heat resistant aluminum alloy wire layer 3 is made up of the second heat-resisting main aluminium alloy wire layer 31 be stranded in outside the first heat resistant aluminum alloy wire layer and the second heat-resisting secondary aluminium alloy wire layer 32 be stranded in outside the second heat-resisting main aluminium alloy wire layer.Second heat-resisting main aluminium alloy wire layer is identical with the direction of lay of the second heat-resisting secondary aluminium alloy wire layer.Second heat-resisting main aluminium alloy wire layer is made up of some circular the second heat-resisting main aluminium alloy wires, and the quantity of the in the present embodiment second heat-resisting main aluminium alloy wire is 16.Second heat-resisting secondary aluminium alloy wire layer is made up of some circular the second heat-resisting secondary aluminium alloy wires.The quantity of the second heat-resisting main aluminium alloy wire is identical with the quantity of the second heat-resisting secondary aluminium alloy wire, and is respectively equipped with a second heat-resisting secondary aluminium alloy wire between adjacent two second heat-resisting main aluminium alloy wires.The external diameter of the second heat-resisting secondary aluminium alloy wire is less than the external diameter of the second heat-resisting main aluminium alloy wire.
3rd heat resistant aluminum alloy wire layer 4 is made up of the 3rd heat-resisting main aluminium alloy wire layer 41 be stranded in outside the second heat resistant aluminum alloy wire layer and the 3rd heat-resisting secondary aluminium alloy wire layer 42 be stranded in outside the 3rd heat-resisting main aluminium alloy wire layer.3rd heat-resisting main aluminium alloy wire layer is identical with the direction of lay of the 3rd heat-resisting secondary aluminium alloy wire layer.3rd heat-resisting main aluminium alloy wire layer is made up of some articles of circular the 3rd heat-resisting main aluminium alloy wires, and the quantity of the in the present embodiment the 3rd heat-resisting main aluminium alloy wire is 22 articles.3rd heat-resisting secondary aluminium alloy wire layer is made up of some articles of circular the 3rd heat-resisting secondary aluminium alloy wires.The quantity of the 3rd heat-resisting main aluminium alloy wire is identical with the quantity of the 3rd heat-resisting secondary aluminium alloy wire, and is respectively equipped with one article of the 3rd heat-resisting secondary aluminium alloy wire between adjacent two the 3rd heat-resisting main aluminium alloy wires.The external diameter of the 3rd heat-resisting secondary aluminium alloy wire is less than the external diameter of the 3rd heat-resisting main aluminium alloy wire.
Adjacent two first heat-resisting main aluminium alloy wires in first heat-resisting main aluminium alloy wire layer are bonded to each other.Adjacent two second heat-resisting main aluminium alloy wires in second heat-resisting main aluminium alloy wire layer are bonded to each other.Adjacent two the 3rd heat-resisting main aluminium alloy wires in 3rd heat-resisting main aluminium alloy wire layer are bonded to each other.First heat resistant aluminum alloy wire layer is contrary with the direction of lay of the second heat resistant aluminum alloy wire layer, and the second heat resistant aluminum alloy wire layer is contrary with the direction of lay of the 3rd heat resistant aluminum alloy wire layer.The external diameter of first, second and third heat-resisting main aluminium alloy wire is identical.The external diameter of first, second and third heat-resisting secondary aluminium alloy wire is identical.
Claims (8)
1. one kind of times of capacity overhead wire, it is characterized in that, the heat resistant aluminum alloy wire layer comprising aluminium bag invar steel core (1) and be stranded in outside aluminium bag invar steel core, described heat resistant aluminum alloy wire layer is successively stranded in the first heat resistant aluminum alloy wire layer (2) outside aluminium bag invar steel core by from-inner-to-outer, the second heat resistant aluminum alloy wire layer (3) and the 3rd heat resistant aluminum alloy wire layer (4) are formed;
Described first heat resistant aluminum alloy wire layer is made up of the first heat-resisting main aluminium alloy wire layer (21) be stranded in outside aluminium bag invar steel core and the first heat-resisting secondary aluminium alloy wire layer (22) be stranded in outside the first heat-resisting main aluminium alloy wire layer, and described first heat-resisting main aluminium alloy wire layer is identical with the direction of lay of the first heat-resisting secondary aluminium alloy wire layer; First heat-resisting main aluminium alloy wire layer is made up of some circular the first heat-resisting main aluminium alloy wires, first heat-resisting secondary aluminium alloy wire layer is made up of some circular the first heat-resisting secondary aluminium alloy wires, the quantity of the first heat-resisting main aluminium alloy wire is identical with the quantity of the first heat-resisting secondary aluminium alloy wire, and is respectively equipped with a first heat-resisting secondary aluminium alloy wire between adjacent two first heat-resisting main aluminium alloy wires; The external diameter of described first heat-resisting secondary aluminium alloy wire is less than the external diameter of the first heat-resisting main aluminium alloy wire;
Described second heat resistant aluminum alloy wire layer is made up of the second heat-resisting main aluminium alloy wire layer (31) be stranded in outside the first heat resistant aluminum alloy wire layer and the second heat-resisting secondary aluminium alloy wire layer (32) be stranded in outside the second heat-resisting main aluminium alloy wire layer, and described second heat-resisting main aluminium alloy wire layer is identical with the direction of lay of the second heat-resisting secondary aluminium alloy wire layer; Second heat-resisting main aluminium alloy wire layer is made up of some circular the second heat-resisting main aluminium alloy wires, second heat-resisting secondary aluminium alloy wire layer is made up of some circular the second heat-resisting secondary aluminium alloy wires, the quantity of the second heat-resisting main aluminium alloy wire is identical with the quantity of the second heat-resisting secondary aluminium alloy wire, and is respectively equipped with a second heat-resisting secondary aluminium alloy wire between adjacent two second heat-resisting main aluminium alloy wires; The external diameter of described second heat-resisting secondary aluminium alloy wire is less than the external diameter of the second heat-resisting main aluminium alloy wire;
Described 3rd heat resistant aluminum alloy wire layer is made up of the 3rd heat-resisting main aluminium alloy wire layer (41) be stranded in outside the second heat resistant aluminum alloy wire layer and the 3rd heat-resisting secondary aluminium alloy wire layer (42) be stranded in outside the 3rd heat-resisting main aluminium alloy wire layer, and described 3rd heat-resisting main aluminium alloy wire layer is identical with the direction of lay of the 3rd heat-resisting secondary aluminium alloy wire layer; 3rd heat-resisting main aluminium alloy wire layer is made up of some articles of circular the 3rd heat-resisting main aluminium alloy wires, 3rd heat-resisting secondary aluminium alloy wire layer is made up of some articles of circular the 3rd heat-resisting secondary aluminium alloy wires, the quantity of the 3rd heat-resisting main aluminium alloy wire is identical with the quantity of the 3rd heat-resisting secondary aluminium alloy wire, and is respectively equipped with one article of the 3rd heat-resisting secondary aluminium alloy wire between adjacent two the 3rd heat-resisting main aluminium alloy wires; The external diameter of described 3rd heat-resisting secondary aluminium alloy wire is less than the external diameter of the 3rd heat-resisting main aluminium alloy wire.
2. according to claim 1 times of capacity overhead wire, is characterized in that, the adjacent two first heat-resisting main aluminium alloy wires in the first heat-resisting main aluminium alloy wire layer are bonded to each other; Adjacent two second heat-resisting main aluminium alloy wires in second heat-resisting main aluminium alloy wire layer are bonded to each other; Adjacent two the 3rd heat-resisting main aluminium alloy wires in 3rd heat-resisting main aluminium alloy wire layer are bonded to each other.
3. according to claim 1 times of capacity overhead wire, is characterized in that, described first heat resistant aluminum alloy wire layer is contrary with the direction of lay of the second heat resistant aluminum alloy wire layer, and the second heat resistant aluminum alloy wire layer is contrary with the direction of lay of the 3rd heat resistant aluminum alloy wire layer.
4. according to claim 1 times of capacity overhead wire, is characterized in that, described aluminium bag invar steel core is made up of the outer aluminium bag invar steel core molded line of the circle outside the center aluminium bag invar steel core molded line of circle and some stranded center aluminium bag invar steel core molded line.
5. according to claim 4 times of capacity overhead wire, it is characterized in that, described center aluminium bag invar steel core molded line is made up of invar silk and the aluminium coating layer be coated on outside invar silk, and outer aluminium bag invar steel core molded line is made up of invar silk and the aluminium coating layer be coated on outside invar silk.
6. times capacity overhead wire according to claim 1 or 2 or 3 or 4 or 5, is characterized in that, the quantity of described first heat-resisting main aluminium alloy wire is 10, and the quantity of the second heat-resisting main aluminium alloy wire is 16, and the quantity of the 3rd heat-resisting main aluminium alloy wire is 22 articles.
7. times capacity overhead wire according to claim 1 or 2 or 3 or 4 or 5, is characterized in that, the external diameter of described first, second and third heat-resisting main aluminium alloy wire is identical.
8. times capacity overhead wire according to claim 1 or 2 or 3 or 4 or 5, is characterized in that, the external diameter of described first, second and third heat-resisting secondary aluminium alloy wire is identical.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420653606.0U CN204215733U (en) | 2014-11-04 | 2014-11-04 | Times capacity overhead wire |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420653606.0U CN204215733U (en) | 2014-11-04 | 2014-11-04 | Times capacity overhead wire |
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| CN204215733U true CN204215733U (en) | 2015-03-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110033903A (en) * | 2019-05-17 | 2019-07-19 | 江苏亨通电力特种导线有限公司 | A kind of manufacturing method of aluminium packet invar steel core superalloy conductor |
-
2014
- 2014-11-04 CN CN201420653606.0U patent/CN204215733U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110033903A (en) * | 2019-05-17 | 2019-07-19 | 江苏亨通电力特种导线有限公司 | A kind of manufacturing method of aluminium packet invar steel core superalloy conductor |
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