CN217767924U - Weather-resistant coated wire - Google Patents
Weather-resistant coated wire Download PDFInfo
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- CN217767924U CN217767924U CN202222667034.9U CN202222667034U CN217767924U CN 217767924 U CN217767924 U CN 217767924U CN 202222667034 U CN202222667034 U CN 202222667034U CN 217767924 U CN217767924 U CN 217767924U
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Abstract
The utility model discloses a resistant type coated wire of waiting. The wire is an aluminum-clad steel core aluminum stranded wire and consists of an aluminum-clad steel core, an aluminum stranded wire layer wrapping the aluminum-clad steel core and an anticorrosive coating coated on the outermost periphery of the aluminum stranded wire layer; the aluminum-clad steel core is formed by concentrically twisting aluminum-clad steel wires; the aluminum stranded wire layer is formed by twisting aluminum wires into a compact structure. The utility model adopts the aluminum-clad steel wire to replace the galvanized steel wire, thereby avoiding electrochemical corrosion; coating the surface of the lead, protecting the outmost aluminum wire from being directly contacted with a corrosive medium, and slowing down the corrosion of the surface layer of the lead; the aluminum wire adopts the molded lines in order to strand into compact structure, makes the wire inside be in under the confined state almost, makes inside the difficult wire that gets into of electrochemical substance such as rainwater, dust, saline and alkaline class, can effectively completely cut off wire inlayer and steel core and outside corrosive environment's contact, slows down wire internal corrosion. The utility model discloses a holding of adding of the synchronous anticorrosive effect of ectonexine makes the wire can use in heavily rotten area, improves wire life.
Description
Technical Field
The utility model relates to a cable field, concretely relates to type of nai time coating wire.
Background
With the rapid development of economy, many power transmission lines are erected in coastal and island areas, however, under the meteorological conditions of corrosive salt mist atmosphere and damp heat, the wires for the power transmission lines are extremely easy to corrode and damage, and the safe operation of the lines is seriously threatened.
At present, most of the wires commonly applied to anticorrosion areas are coated with anticorrosion grease inside steel-cored aluminum stranded wires, so that the anticorrosion capability of the stranded wires is improved. The method is divided into the following steps according to different corrosion resistance grades: only oiling the steel core; (2) coating oil on all wires except the outer layer wire; (3) Coating all the wires with oil except the outer surfaces of the outer single wires; and (4) coating all wires including the outer layer with oil.
However, the wire coated with the anti-corrosion oil leaks from the inside of the wire due to the action of tension in the tension paying-off process, so that tension paying-off equipment is polluted, and the stringing construction progress of the wire is influenced. Meanwhile, in the long-term operation process, rainwater can enter the interior of the thin gap of the wire, and the anticorrosion oil is diluted and dissolved, so that the anticorrosion oil is ineffective.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a resistant type coated wire of waiting has great economic benefits and social and wide market prospect in the anticorrosive regional application of transmission line.
In order to realize the above purpose, the utility model adopts the following technical scheme:
the utility model provides a weather-proof coated wire, which is an aluminum-clad steel core aluminum stranded wire and consists of an aluminum-clad steel core, an aluminum stranded wire layer wrapped outside the aluminum-clad steel core and an anticorrosive coating;
the aluminum-clad steel core is formed by concentrically twisting aluminum-clad steel wires;
the aluminum stranded wire layer is formed by twisting aluminum wires into a compact structure; the outermost periphery of the aluminum stranded wire layer is coated with the anticorrosive coating.
According to the utility model discloses a resistant type coated wire, preferably, the aluminium wire is the molded lines. More preferably, the aluminum wire is a T-shaped aluminum wire or an SZ-shaped aluminum wire.
For the corrosion and protection treatment of metals, the most effective anticorrosion means is to isolate the metal matrix from the corrosive medium. And the utility model discloses a take the design of certain isolated corrosive medium to the wire is outer and outside to improve the corrosion-resistant grade of wire, form high-efficient stable anticorrosion ability. And the T-shaped structure of the outer layer is processed, so that the inside of the wire forms a semi-closed state, a corrosive medium is isolated, and the internal corrosion is slowed down. The coating formed outside has excellent chemical inertness, and the coating is resistant to chemicals such as acid, alkali, salt and the like and solvents, provides a good protective barrier for the aluminum substrate, and prolongs the service life of the lead in coastal areas and process polluted areas.
According to the utility model discloses a resistant type coated wire of waiting, preferably, the aluminum stranded conductor layer includes inlayer and skin, anticorrosive coating coat in outer peripheral surface.
According to the utility model discloses a resistant type coated wire of waiting, preferably, the aluminium-clad steel wire is the round wire. More preferably, the structure of the concentric twisting of the aluminum-clad steel wires may be 1+6 (1+6), 1+6+12 (1 +6+ 12) or 1+6+12+18 (1 +6+ 12) from the inner layer to the outer layer. "1+6" means that the center has 1 strand and the outer 6 strands; 1+6+ 12', namely continuously twisting 12 on the outer layer on the basis of 1+6; 1+6+12+18 and so on.
According to the utility model discloses a resistant type coated wire of waiting, preferably, the aluminium stranded conductor layer includes more than two-layer, and the stranded conductor direction of outmost aluminium line is the dextrad, and adjacent layer stranded conductor opposite direction, the aluminium package steel core is also opposite with the stranded conductor direction of adjacent layer aluminium line.
In a preferred embodiment, preferably, the aluminum wire is a T-shaped aluminum wire or an SZ-shaped aluminum wire;
the aluminum-clad steel wire is a round wire, and the concentrically twisted structure of the aluminum-clad steel wire is 1+6 (1+6), 1+6+12 (1 +6+ 12) or 1+6+12+18 (1 +6+12 +) from the inner layer to the outer layer;
the aluminum stranded wire layer comprises an inner layer and an outer layer, the stranded wire direction of the outer layer is the right direction, and the stranded wire direction of the inner layer is the left direction in an opposite way; the aluminum-clad steel core is opposite to the stranded wire direction of the inner layer; the anticorrosive coating is coated on the outer peripheral surface of the outer layer.
According to the weather-resistant coated wire of the present invention, preferably, the thickness of the anticorrosive coating layer is 10 μm to 20 μm.
The anticorrosive coating is formed by performing surface treatment on the surface of the wire through conventional coating process flows such as surface cleaning, paint spraying, photocuring and the like on the wire.
The utility model discloses an improvement that goes on among the resistant type coated wire of waiting includes:
1) Aluminum clad steel wire replacing galvanized steel wire
The overhead conductor is subjected to electrochemical corrosion in the atmosphere, and in the steel-cored aluminum strand, a zinc coating layer on the surface of a steel core formed by a galvanized steel wire is in contact with an oxide film formed on the surface of an aluminum wire to form electrochemical corrosion. Since zinc has a lower potential than alumina, zinc acts as an anode and the zinc coating quickly corrodes away, exposing the steel core to the atmosphere and corroding it. In addition, after the zinc coating is corroded, the steel core is contacted with the aluminum oxide to form electrochemical corrosion again, and the steel is used as an anode to accelerate the corrosion of the steel core. And good metallurgical bonding exists between the aluminum steel in the aluminum-clad steel wire, aluminum contact exists between the single wires in the stranded wire, and electrochemical corrosion between different metals does not exist, so that the corrosion speed of the wire can be greatly reduced, and the service life of the wire is prolonged.
2) Aluminum wire design of special structure
The utility model discloses an adopt special construction's T type or SZ type aluminum wire to replace traditional round wire, the synthetic compact structure of hank. Under almost confined state, make inside rainwater, dust, salt and alkali class isochemistry material is difficult for getting into the wire, can completely cut off the contact of wire inlayer and steel core and outside corrosive environment effectively, slow down wire internal corrosion.
3) Wire surface coating treatment
The outer layer of the wire is coated with the anticorrosive coating, so that a layer of compact anticorrosive coating with corrosion resistance and ageing resistance is formed on the surface of the wire, the contact between an outer layer aluminum wire and a corrosive environment is effectively isolated, and the corrosion of the surface of the wire is slowed down.
When the utility model discloses a when resistant type coated wire is applied to the stronger area of coastal corrosivity, because special construction T type or SZ type structure that outer aluminium wire adopted makes under the inside confined state that is in almost of wire, inside rainwater, dust, saline and alkaline class isochemistry material were difficult for getting into the wire, can completely cut off wire inlayer and steel core and outside corrosive environment's contact effectively, slowed down wire internal corrosion. Meanwhile, when corrosive media such as acid rain and dust fall on the surface of the lead, the corrosion-resistant coating on the surface of the lead can well protect the outermost aluminum wire, prevent the aluminum wire from directly contacting with the corrosive media, and slow down the corrosion of the surface layer of the lead. The utility model discloses a holding of adding of the synchronous anticorrosive effect of ectonexine makes the wire can use in heavily rotten area, improves wire life.
The anticorrosive coating on the surface of the wire can be prepared into coatings with different properties according to the application requirements of different regions, the requirements of the coating on binding force, corrosion resistance, aging resistance and the like can be increased, and different coating colors and thicknesses can be designed according to specific requirements, so that the environmental use requirements are met.
The utility model discloses special construction's resistant type coated wire has great economic benefits and social and wide market prospect in the anticorrosive regional application of transmission line.
Drawings
Fig. 1 is a schematic cross-sectional view of a weather-resistant coated wire in example 1.
FIG. 2 is a graph of the change in strength of the aluminum single line tested in example 1.
FIG. 3 is a graph of the strength change of a single wire of the aluminum-clad steel core tested in example 1.
Fig. 4 is a schematic cross-sectional view of a weather-resistant coated wire in example 2.
FIG. 5 is a schematic cross-sectional view of a weather-resistant coated wire in example 3.
Fig. 6 is a schematic cross-sectional view of a weather-resistant coated wire in example 4.
Description of reference numerals:
1-aluminum clad steel wire, 2-T type aluminum wire, 21-SZ type aluminum wire and 3-anticorrosive coating.
Detailed Description
In order to illustrate the invention more clearly, the invention is further described below with reference to preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
The utility model finally forms a weather-proof coated wire through triple anticorrosion design, which comprises 1) replacing galvanized steel wires with aluminum-clad steel wires to avoid electrochemical corrosion; 2) The aluminum wire with a special structure is designed, so that the inside of the wire is almost in a closed state, the contact between the inner layer of the wire and the steel core and an external corrosion environment can be effectively isolated, and the internal corrosion of the wire is slowed down; 3) And the surface of the wire is coated to protect the outermost aluminum wire, prevent the aluminum wire from being in direct contact with a corrosive medium and slow down the corrosion of the surface layer of the wire.
Example 1
As shown in fig. 1, the weather-resistant coated wire is an aluminum-steel-cored wire, and comprises an aluminum-steel-cored wire core, an aluminum stranded wire layer wrapped outside the aluminum-steel-cored wire core and an anti-corrosion coating layer 3; the steel core is formed by twisting aluminum-clad steel wires 1; the aluminum stranded wire layer is formed by twisting T-shaped aluminum wires 2 into a compact structure; the outermost periphery of the aluminum stranded wire layer is coated with an anti-corrosion coating 3, and the thickness of the anti-corrosion coating can be 10-20 μm, such as 10 μm, 13 μm, 15 μm, 17 μm, 19 μm, 20 μm and the like.
The anticorrosive coating 3 can be prepared into coatings with different performances according to application requirements of different regions, can increase the binding force, corrosion resistance, aging resistance and other requirements of the coating, and can design different coating colors and thicknesses according to specific requirements to meet the environmental use requirements. For example, in the embodiment, the existing anticorrosive paint is a UV light-curable paint, and the main components of the paint include: 70-85wt% of unsaturated polyester, epoxy acrylate and polyurethane acrylate, 3-5 wt% of inorganic pigment, 5-8 wt% of photoinitiator and 10-20 wt% of anhydrous butyl ester. The surface of the lead is treated by conventional coating process flows such as surface cleaning, paint spraying, photocuring and the like to form the anticorrosive coating 3 with the thickness of 20 mu m.
T type aluminium wire 2 replaces traditional round wire, twists into compact structure and forms aluminium stranded conductor layer, can make inside being in under the confined state almost of wire, makes rainwater, dust, salt and alkali class isochemistry material difficult entering wire inside, can completely cut off wire inlayer and steel core and external corrosion environment's contact effectively, slows down wire internal corrosion.
In this preferred embodiment, the aluminum stranded wire layer includes an inner layer and an outer layer, the direction of the stranded wire of the outer layer is a right direction, the direction of the stranded wire of the inner layer is a left direction, and the direction of the stranded wire of the aluminum-clad steel wire adjacent to the inner layer is a right direction. The anticorrosive coating 3 is coated on the outer peripheral surface of the outer layer. The aluminum-clad steel wire 1 is a round wire, and the concentric stranding structure of the aluminum-clad steel wire is 1+6.
When corrosive media such as acid rain and dust fall on the surface of the wire, the corrosion-resistant coating 3 on the surface of the wire can well protect the outermost aluminum wire, prevent the aluminum wire from being in direct contact with the corrosive media, and slow down the corrosion of the surface layer of the wire. In addition, the anticorrosive coating 3 on the surface of the lead can be prepared with coatings with different performances according to application requirements of different regions, so that the requirements of the coating on binding force, corrosion resistance, aging resistance and the like can be increased, and different coating colors and thicknesses can be designed according to specific requirements, so that the environmental use requirements are met.
According to the technical characteristics of the products in the embodiments, various tests are performed on the lead, and the performance detection requirements are as follows.
(1) Salt spray corrosion test of wire
Referring to the test requirements of GB/T2423.17-2008, the weather-resistant coated wire obtained in the embodiment and the uncoated aluminum-clad steel core aluminum stranded wire with the same specification are subjected to a salt spray corrosion comparison test. The strengths of the single lines for different salt spray corrosion periods are shown in table 1 and fig. 2 and 3.
TABLE 1 Single line Strength at different salt spray Corrosion times
As can be seen from FIG. 2, the strength of the weather-resistant coated wire obtained in this example was not significantly reduced during the test, whereas the strength of the uncoated single wire was reduced by about 20MPa after 1000 hours of salt spray corrosion. The aluminum-clad steel core wire, the coated wire and the uncoated wire did not change significantly, as shown in fig. 3.
When the two wires are not corroded by salt fog, the surfaces of the two wires have no blackened areas and no black spots. After 1120 hours of salt spray corrosion of the wire, the surface of the wire subjected to coating treatment in the embodiment has no obvious corrosion phenomenon, while the surface of the wire not subjected to coating treatment has obvious corrosion products, so that the aluminum wire is corroded.
From single line strength loss and wire appearance analysis, the coating plays the guard action to the aluminium wire, has reduced the effect that the aluminium wire corrodes.
(2) Light aging test of light guide
In order to detect the light aging resistance of the anticorrosive coating 3 in nature, reference is made to GB/T2423.24-2013 part 2 of environmental test: test methods test Sa: the weathering-resistant coated wire obtained in this example was subjected to a photoaging test by simulating terrestrial solar radiation and its test guidelines, and the anticorrosive coating 3 did not fade significantly when irradiated with light continuously for 1000 hours.
(3) Over-pulley test
A pulley test is adopted to detect the bonding force condition of the wire coating, and the test is carried out according to item 7.25 in the Enterprise Standard Q/GDW 10632-2016 Steel core high conductivity aluminum stranded wire. After the weather-resistant coated wire obtained in the embodiment passes through the pulley, the stranded wire does not have obvious strand loosening, and the coating does not fall off; after the pulley test, the tensile strength of the stranded wire is 123.39KN (96.3% RTS), and the requirement of the pulley test is met.
Through a pulley test, the coating is well combined with the aluminum substrate and does not obviously fall off, and the coating is proved not to fall off in the wire construction process.
Example 2
As shown in fig. 4, this embodiment is different from embodiment 1 in that the T-shaped aluminum wire 2 in embodiment 1 is replaced with an SZ-shaped aluminum wire 21, and is twisted into a compact structure to form an aluminum twisted wire layer; the structure that can realize the semi-enclosed processing of wire inlayer equally makes rainwater, dust, salt and alkali class isochemistry material difficult for getting into inside the wire, can completely cut off the contact of wire inlayer and steel core and external corrosive environment effectively, slows down wire internal corrosion.
Example 3
As shown in fig. 5, this embodiment is different from embodiment 1 in that the concentric twisting structure of aluminum-clad steel wire 1 is 1+6+12, i.e. 1, 6 and 12 in sequence from the inner layer to the outer layer.
Example 4
As shown in FIG. 6, this embodiment is different from embodiment 1 in that the concentric twisting structure of aluminum-clad steel wire 1 is 1+6+12+18, i.e. 1, 6, 12 and 18 in sequence from the inner layer to the outer layer.
The utility model discloses a holding of adding of the synchronous anticorrosive effect of ectonexine makes the wire can use in heavily rotten area, improves wire life.
Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes that belong to the technical solutions of the present invention are still in the protection scope of the present invention.
Claims (10)
1. A weather-resistant coated wire is characterized in that the weather-resistant coated wire is an aluminum-clad steel core aluminum stranded wire and consists of an aluminum-clad steel core, an aluminum stranded wire layer and an anticorrosive coating, wherein the aluminum-clad steel core is wrapped outside the aluminum-clad steel core;
the aluminum-clad steel core is formed by concentrically twisting aluminum-clad steel wires;
the aluminum stranded wire layer is formed by twisting aluminum wires into a compact structure; the outermost periphery of the aluminum stranded wire layer is coated with the anticorrosive coating.
2. The weather-resistant coated wire according to claim 1, wherein the aluminum wire is a molded wire.
3. The weather-resistant coated wire according to claim 2, wherein the aluminum wire is a T-shaped aluminum wire.
4. The weather-resistant coated wire according to claim 2, wherein the aluminum wire is an SZ-type aluminum wire.
5. The weather-resistant coated wire as claimed in claim 1, wherein the aluminum strand layer includes an inner layer and an outer layer, and the corrosion-resistant coating layer is coated on an outer circumferential surface of the outer layer.
6. The weather-resistant coated wire as claimed in claim 1, wherein the aluminum-clad steel wire is a round wire.
7. The weather-resistant coated wire according to claim 6, wherein the aluminum-clad steel wires are concentrically stranded in a structure of 1+6, 1+6+12, or 1+6+12+18 from the inner layer to the outer layer.
8. The weather-resistant coated wire according to claim 1, wherein the aluminum stranded wire layer comprises more than two layers, the strand direction of the outermost aluminum wire is right, the strand directions of the adjacent layers are opposite, and the strand directions of the aluminum clad steel core and the adjacent layers are also opposite.
9. The weather-resistant coated wire according to claim 1, wherein the aluminum wire is a T-shaped aluminum wire or an SZ-shaped aluminum wire;
the aluminum-clad steel wires are round wires, and the concentric twisting structure of the aluminum-clad steel wires is 1+6, 1+6+12 or 1+6+12+18 from the inner layer to the outer layer;
the aluminum stranded wire layer comprises an inner layer and an outer layer, the stranded wire direction of the outer layer is the right direction, and the stranded wire direction of the inner layer is opposite; the aluminum-clad steel core is opposite to the stranded wire direction of the inner layer; the anticorrosive coating is coated on the outer peripheral surface of the outer layer.
10. The weather-resistant coated wire according to claim 1 or 9, wherein the thickness of the corrosion-resistant coating layer is 10 μm to 20 μm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222667034.9U CN217767924U (en) | 2022-10-11 | 2022-10-11 | Weather-resistant coated wire |
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| CN202222667034.9U CN217767924U (en) | 2022-10-11 | 2022-10-11 | Weather-resistant coated wire |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115938646A (en) * | 2022-11-30 | 2023-04-07 | 浙江中行新材料科技有限公司 | Anti-corrosion overhead line capable of reducing corona loss and preparation method thereof |
| WO2024113457A1 (en) * | 2022-11-30 | 2024-06-06 | 浙江中行新材料科技有限公司 | Aluminum-based corrosion-resistant and wear-resistant ceramic film layer, overhead line, and preparation method therefor |
-
2022
- 2022-10-11 CN CN202222667034.9U patent/CN217767924U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115938646A (en) * | 2022-11-30 | 2023-04-07 | 浙江中行新材料科技有限公司 | Anti-corrosion overhead line capable of reducing corona loss and preparation method thereof |
| WO2024113457A1 (en) * | 2022-11-30 | 2024-06-06 | 浙江中行新材料科技有限公司 | Aluminum-based corrosion-resistant and wear-resistant ceramic film layer, overhead line, and preparation method therefor |
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