CN220709970U - Low-sag high-capacity-increasing lead - Google Patents
Low-sag high-capacity-increasing lead Download PDFInfo
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- CN220709970U CN220709970U CN202321991249.4U CN202321991249U CN220709970U CN 220709970 U CN220709970 U CN 220709970U CN 202321991249 U CN202321991249 U CN 202321991249U CN 220709970 U CN220709970 U CN 220709970U
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- wire layer
- aluminum wire
- bearing piece
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 63
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 63
- 239000004519 grease Substances 0.000 claims abstract description 12
- 230000001050 lubricating effect Effects 0.000 claims abstract description 12
- 229910000838 Al alloy Inorganic materials 0.000 claims description 12
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 12
- 239000004917 carbon fiber Substances 0.000 claims description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 11
- 238000005260 corrosion Methods 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model relates to a low-sag high-capacity-increasing lead which comprises a lead core bearing piece, an inner aluminum wire layer, an outer aluminum wire layer and a lubricating grease layer, wherein the lead core bearing piece is provided with a lead core bearing groove; the inner aluminum wire layer is trapezoid, is arranged on the outer side of the wire core bearing piece and is arranged along the circumferential direction of the wire core bearing piece; the outer aluminum wire layer is circular and deviates from the wire core bearing piece, and is arranged at the outer side of the inner aluminum wire layer along the circumferential direction of the inner aluminum wire layer; the capacity-increasing lead has large conveying capacity and excellent sag performance, is particularly suitable for the transformation of old lines, can realize the maximum increase of 200 percent of conveying capacity by only changing leads with the same weight, and has good anti-corrosion effect by coating lubricating grease in a gap.
Description
Technical Field
The utility model relates to the technical field of sag high-capacity-increasing wires, in particular to a low sag high-capacity-increasing wire.
Background
The traditional transmission line generally takes a steel-cored aluminum stranded wire as a main material, a wire core adopts a galvanized steel stranded wire, and an outer layer adopts an electrical hard round aluminum wire to be stranded. The maximum operating temperature of the wire of this structure is typically 77 ℃, and the conveying capacity is small. Meanwhile, part of old lines cannot meet the load required by use due to the rapid development of local economy, the conveying capacity is greatly improved, and meanwhile, the existing power transmission line is replaced by a low-sag high-capacity-increasing wire due to the limitation of corridor, reconstruction time and other reasons.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a low-sag high-capacity-increasing lead.
The utility model provides a low-sag high-capacity-increasing lead for realizing the aim, which comprises a lead core bearing piece;
the inner aluminum wire layer is trapezoid, is arranged on the outer side of the wire core bearing piece and is arranged along the circumferential direction of the wire core bearing piece;
the outer aluminum wire layer is circular and deviates from the wire core bearing piece, and is arranged at the outer side of the inner aluminum wire layer along the circumferential direction of the inner aluminum wire layer;
a gap exists between the wire core bearing piece and the inner aluminum wire layer;
and the lubricating grease layer is filled in the gap between the wire core bearing piece and the inner aluminum wire layer.
In some embodiments, the core carrier is a high strength stranded carbon fiber wire.
In some embodiments, the inner aluminum wire layer is a super heat resistant aluminum alloy wire.
In some embodiments, the outer aluminum wire layer is a round wire of super heat resistant aluminum alloy.
In some embodiments, the thickness of the inner aluminum wire layer is 2.0mm to 4.0mm.
In some embodiments, the thickness of the outer aluminum wire layer is 2.0mm to 4.5mm.
In some embodiments, the temperature at the inflection point of the compatibilized wire is 15 ℃ to 30 ℃.
The utility model has the beneficial effects that: the utility model relates to a low-sag high-capacity-increasing lead which comprises a wire core bearing piece, an inner aluminum wire layer, an outer aluminum wire layer and a lubricating grease layer, wherein the trapezoid inner aluminum wire layer is sequentially arranged, and the trapezoid inner aluminum wire layer is arranged on the outer side of the wire core bearing piece along the circumferential direction of the wire core bearing piece; the round outer aluminum wire layer is away from the wire core bearing piece and is arranged at the outer side of the inner aluminum wire layer along the circumferential direction of the inner aluminum wire layer; and the lubricating grease layer is filled in the gap between the wire core bearing piece and the inner aluminum wire layer. The capacity-increasing lead has large conveying capacity and excellent sag performance, is particularly suitable for transformation of old lines, can realize maximum 200% increase of conveying capacity by only changing leads with the same weight, and has good anti-corrosion effect by coating lubricating grease in a gap.
Drawings
FIG. 1 is a schematic diagram of some embodiments of a low sag, high capacity, capacity-enhancing wire according to the present utility model;
fig. 2 is a schematic construction diagram of another embodiment of a low sag high capacity increasing wire according to the present utility model.
In the drawing, 100, a wire core bearing piece; 110. an inner aluminum wire layer; 120. an outer aluminum wire layer; 130. a lubricating grease layer; 140. and an aluminum wire layer.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "top," "bottom," "inner," "outer," "axis," "circumferential," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model or simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "engaged," "hinged," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1 and 2, a low sag, high capacity, conductor includes a core carrier 100. The inner aluminum wire layer 110 is trapezoidal, is disposed on the outer side of the wire core carrier 100, and is disposed along the circumferential direction of the wire core carrier 100. The outer aluminum wire layer 120 is circular and is arranged outside the inner aluminum wire layer 110 along the circumferential direction of the inner aluminum wire layer 110, facing away from the wire core bearing member 100. There is a gap between the wire core carrier 100 and the inner aluminum wire layer 110. The lubricating grease layer 140130 is filled in the gap between the wire core carrier 100 and the inner aluminum wire layer 110. The capacity-increasing lead has large conveying capacity and excellent sag performance, is particularly suitable for transformation of old lines, can realize maximum 200% increase of conveying capacity by only changing leads with the same weight, and has good anti-corrosion effect by coating lubricating grease in a gap.
In some embodiments, the core carrier 100 is a high strength stranded carbon fiber wire. It should be noted here that the core carrier 100 is a high strength stranded carbon fiber wire with a low coefficient of expansion.
In some embodiments, the inner aluminum wire layer 110 is a super heat resistant aluminum alloy wire.
In some embodiments, the outer aluminum wire layer 120 is a round wire of super heat resistant aluminum alloy.
In this embodiment, the inner aluminum wire layer 110 is a super heat-resistant aluminum alloy wire, and the aluminum wire layer is a round super heat-resistant aluminum alloy wire.
In some embodiments, the thickness of the inner aluminum wire layer 110 is 2.0mm to 4.0mm.
In some embodiments, the thickness of the outer aluminum wire layer 120 is 2.0mm to 4.5mm.
In this embodiment, the side of the inner aluminum wire layer 110 adjacent to the wire core carrier 100 is shorter than the side of the inner aluminum wire layer 110 away from the wire core carrier 100. It should be noted that, the capacity-increasing conductor of the present application is subjected to core tightening force in the construction and use process, the outer aluminum wire layer 120 is not stressed, the inflection point temperature of the conductor is advanced to the construction temperature, the sag characteristic of the conductor is optimized, the sag characteristic of the conductor is improved, and the requirement of high Wen Zengrong is met. Under normal conditions, the inflection point temperature of the type of the capacity-increasing lead is 15-30 ℃.
In some embodiments, the temperature at the inflection point of the compatibilized wire is 15 ℃ to 30 ℃. The inflection point temperature of the compatibilized wire is 15-30 ℃. The capacity-increasing lead can improve the operation temperature to 210 ℃ at most, greatly improve the conveying capacity, and can improve the conveying capacity by 50% -200%. Meanwhile, the cable has similar performance to the original wires, and facilities such as towers and the like do not need to be replaced.
As shown in fig. 2, the core carrier 100 is a high strength stranded carbon fiber wire with a low coefficient of expansion. In use, the outer aluminum wire layer 120 is stressed in advance, so that when the high-strength stranded carbon fiber wire is in operation, due to the excellent characteristic of low expansion coefficient of the high-strength stranded carbon fiber wire, the variation of sag is extremely slow when the high-temperature stranded carbon fiber wire is in operation, and sag during high-temperature transportation is ensured to meet the requirement.
In the utility model, gaps exist between stranded carbon fibers in the wire core bearing piece 100 and the inner aluminum wire layer 110, high-temperature-resistant lubricating grease is coated in the gaps, so that a wire can safely run at high temperature, due to the existence of the gaps, the wire is completely stressed by the wire core bearing piece 100 by being assisted with the wire tightening treatment of the wire core bearing piece 100 in construction (because the linear expansion coefficient of the carbon fibers is only 1/23 of that of aluminum wires and 1/11.5 of that of steel cores), the sag increase amount is small when the wire runs at high temperature, the requirement of line capacity improvement is met, the wire core bearing piece 100 is a high-strength stranded carbon fiber core with a low linear expansion coefficient, the inner aluminum wire layer 110 is an ultra-heat-resistant aluminum alloy molded line, and the outer aluminum wire layer 120 is an ultra-heat-resistant aluminum alloy round line. The wire has small linear expansion coefficient, meets the capacity-increasing requirement, can maximally reach the requirement of capacity increase by more than 200 percent by only changing the wire with the same specification under the condition of not changing a steel tower, reduces circuit investment, and has the advantages of corrosion resistance and prolonged service life because the core is coated with high-temperature-resistant lubricating grease. The wire core bearing member 100 is formed by twisting a plurality of ultra-high strength carbon fiber wires, the inner aluminum wire layer 110 is an ultra-heat resistant aluminum alloy wire, and the outer aluminum wire layer 120 is an ultra-heat resistant aluminum alloy round wire.
In application, a certain engineering original used wire is a common steel-cored aluminum strand with the model number of: JL/G1A-400/50-54/7, weight 1510.5kg/km, current carrying capacity at 70℃of 599A, high Wen Huchui at this temperature of 4.12m (200 m gauge). The current capacity can not meet the requirement due to the rapid development of economy, the capacity of the current capacity can not meet the requirement, the capacity-increasing wire is adopted, the density of carbon fiber is small and is only 1/5 of that of a steel core, so that the section of an aluminum wire can be properly increased, the model is 500/50, the weight is 1498.1kg/km, the current capacity can reach 1904A at the highest running temperature of 210 ℃, and the current capacity of the current capacity-increasing wire is more than 3 times that of the current wire, and the transmission capacity of a circuit can be greatly increased. Meanwhile, a material with a low linear expansion coefficient (the linear expansion coefficient after the inflection point of the construction temperature is only about 1/19 of that of the original wire) is adopted, so that the high-temperature sag at 210 ℃ is 2.39m (200 m span), which is smaller than the sag at 70 ℃ of the common wire by 4.12m, and the safety use requirement is met.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "examples," "particular examples," "one particular embodiment," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The present utility model is not limited to the above preferred embodiments, and any person skilled in the art, within the scope of the present utility model, may apply to the present utility model, and equivalents and modifications thereof are intended to be included in the scope of the present utility model.
Claims (7)
1. A low sag, high capacity, compatibilized wire comprising:
a wire core bearing member;
the inner aluminum wire layer is trapezoid, is arranged on the outer side of the wire core bearing piece and is arranged along the circumferential direction of the wire core bearing piece;
the outer aluminum wire layer is circular and deviates from the wire core bearing piece, and is arranged on the outer side of the inner aluminum wire layer along the circumferential direction of the inner aluminum wire layer;
a gap exists between the wire core bearing piece and the inner aluminum wire layer;
and the lubricating grease layer is filled in the gap between the wire core bearing piece and the inner aluminum wire layer.
2. The low sag high capacity booster wire of claim 1, wherein the wire core carrier is a high strength stranded carbon fiber wire.
3. The low sag high capacity booster wire of claim 1, wherein the inner aluminum wire layer is a super heat resistant aluminum alloy wire.
4. The low sag high capacity booster wire of claim 1, wherein the outer aluminum wire layer is a round wire of super heat resistant aluminum alloy.
5. The low sag high capacity booster wire of claim 1, wherein the inner aluminum wire layer has a thickness of 2.0mm to 4.0mm.
6. The low sag high capacity booster wire of claim 1, wherein the outer aluminum wire layer has a thickness of 2.0mm to 4.5mm.
7. The low sag, high capacity, wire according to claim 1, wherein the temperature at the inflection point of the capacity wire is 15 ℃ to 30 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321991249.4U CN220709970U (en) | 2023-07-26 | 2023-07-26 | Low-sag high-capacity-increasing lead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321991249.4U CN220709970U (en) | 2023-07-26 | 2023-07-26 | Low-sag high-capacity-increasing lead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220709970U true CN220709970U (en) | 2024-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321991249.4U Active CN220709970U (en) | 2023-07-26 | 2023-07-26 | Low-sag high-capacity-increasing lead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220709970U (en) |
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2023
- 2023-07-26 CN CN202321991249.4U patent/CN220709970U/en active Active
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