CN215417569U - Low wind pressure low noise aerial insulated cable - Google Patents
Low wind pressure low noise aerial insulated cable Download PDFInfo
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- CN215417569U CN215417569U CN202121617310.XU CN202121617310U CN215417569U CN 215417569 U CN215417569 U CN 215417569U CN 202121617310 U CN202121617310 U CN 202121617310U CN 215417569 U CN215417569 U CN 215417569U
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- insulated cable
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Abstract
The utility model provides a low-wind-pressure low-noise overhead insulated cable which comprises a conductor and an insulating layer, wherein the conductor is formed by twisting a plurality of metal single wires, the outer surface of the conductor is coated with the insulating layer, and the outer surface of the insulating layer is provided with a convex strip and a groove which are spirally raised along the length direction of the cable. The low-wind-pressure low-noise aerial insulated cable is simple in structure and easy to process, and the functions of reducing the wind resistance coefficient and reducing the noise of the aerial insulated cable are realized by changing the surface layer structure of the insulating layer and adding the grooves and the convex strips.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to a low-wind-pressure low-noise overhead insulated cable.
Background
The overhead insulated cable is mainly used in suburb and rural power distribution networks, has simple structure, safety and reliability, and good mechanical property and electrical property, and compared with a bare overhead wire, the overhead insulated cable has small laying clearance, saves space, can reduce the occurrence of power supply accidents, and ensures the safety of life; however, the overhead line is usually laid outdoors, the meteorological environment is usually considered in the design, the wind load calculation has a very important position, the strength, the tower height, the span and the like of the wire are involved, the wind load borne by the wire is reduced, the structural cost of the overhead transmission line can be reduced, and especially in coastal, high mountain and windy area with wind gaps, the reduction of the wind pressure of the wire has important significance for reducing the cost of the line and improving the safety of the line operation.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides the low-wind-pressure low-noise overhead insulated cable, and the wind resistance coefficient and the noise are reduced by forming a wind pressure resistant structure on the surface of the insulating layer of the overhead insulated cable; the conductors of the overhead insulated cable carry mechanical loads and electrical power conduction.
The technical scheme adopted by the utility model is as follows:
a low wind pressure low noise aerial insulated cable, wherein: the cable comprises a conductor and an insulating layer, wherein the conductor is formed by twisting a plurality of metal single wires, the outer surface of the conductor is coated with the insulating layer, and the outer surface of the insulating layer is provided with a raised spiral convex rib and a raised spiral concave groove along the length direction of the cable.
Preferably, the overhead insulated cable of low wind pressure low noise, wherein: the convex strips and the grooves are uniformly distributed along the circumferential direction.
Preferably, the overhead insulated cable of low wind pressure low noise, wherein: the conductor is formed by twisting a plurality of round or special-shaped metal single wires.
Preferably, the overhead insulated cable of low wind pressure low noise, wherein: the insulating layer is made of polytetrafluoroethylene, cross-linked polyethylene or fluorinated ethylene propylene.
Preferably, the overhead insulated cable of low wind pressure low noise, wherein: 2-6 raised ribs and 2 grooves which are spirally raised are arranged on the outer surface of the insulating layer along the length direction of the lead, and the height of each raised rib is 2-4 mm; the height of the groove is 2-3 mm, the depth is 1-2 mm, and the width is 2-4 mm.
The utility model has the advantages that: the low-wind-pressure low-noise aerial insulated cable is simple in structure and easy to process, and the functions of reducing the wind resistance coefficient and reducing the noise of the aerial insulated cable are realized by changing the surface layer structure of the insulating layer and adding the grooves and the convex strips.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of embodiment 1.
Fig. 3 is a schematic structural view of embodiment 2.
Fig. 4 is a schematic structural view of embodiment 3.
Description of reference numerals: 1-a conductor; 1.1-a wire; 2-an insulating layer; 2.1-convex strips; 2.2-groove.
Detailed Description
The utility model is further illustrated by the following specific figures and examples.
As shown in fig. 1-4: the utility model provides a low-wind-pressure low-noise aerial insulated cable, wherein: including conductor 1 and insulating layer 2, conductor 1 is formed by a plurality of metal single line 1.1 transposition, and 1 surface cladding insulating layer 2 of conductor, 2 surfaces of insulating layer are provided with spiral raised sand grip 2.1 and recess 2.2 along cable length direction.
Wherein: the convex strips 2.1 and the grooves 2.2 are uniformly distributed along the circumferential direction.
Wherein: the conductor 1 is formed by twisting a plurality of round or special-shaped metal single wires.
Wherein: the insulating layer 2 is made of polytetrafluoroethylene, cross-linked polyethylene or fluorinated ethylene propylene.
Wherein: 2-6 raised ridges 2.1 and 2 grooves 2.2 which are spirally raised are arranged on the outer surface of the insulating layer 2 along the length direction of the lead, and the height of the raised ridges 2.1 is 2-4 mm; the height of the 2.2 grooves is 2-3 mm, the depth is 1-2 mm, and the width is 2-4 mm.
Specific examples are set forth below
Example 1
As shown in fig. 2, a conductor 1 is formed by twisting a special-shaped aluminum alloy single wire 1.1, an insulating layer 2 is made of weather-resistant polytetrafluoroethylene, the insulating layer 2 is coated on the outer side of the conductor 1, and the outer surface of the insulating layer is provided with 6 raised ridges 2.1 with the height of 4mm and 2 grooves 2.2 with the height of 3mm, the depth of 2mm and the width of 4mm along the length direction of a lead in a spiral way; the 6 convex strips 2.1 and the 2 grooves 2.2 are evenly distributed in the circumferential direction.
Example 2
As shown in fig. 3, a conductor 1 is formed by twisting a round aluminum single wire 1.1.1 and a galvanized steel wire 1.1.2, an insulating layer 2 is made of weather-resistant cross-linked polyethylene, the insulating layer 2 covers the outer side of the conductor 1, and the outer surface of the insulating layer is provided with 4 convex strips 2.1 with the height of 3mm and 2 grooves 2.2 with the height of 2.5mm, the depth of 1.5mm and the width of 3mm, which are spirally raised along the length direction of a lead; the 4 convex strips 2.1 and the 2 grooves 2.2 are evenly distributed in the circumferential direction.
Example 3
As shown in fig. 4, a conductor 1 is formed by twisting round copper single wires 1.1, an insulating layer 2 is made of weather-resistant fluorinated ethylene propylene, the insulating layer 2 is coated outside the conductor 1, and the outer surface of the insulating layer is provided with 2 raised spiral convex strips 2.1 with the height of 2mm and 2 grooves 2.2 with the height of 2mm, the depth of 1mm and the width of 2mm along the length direction of a lead; 2 the sand grip 2.1 and 2 grooves 2.2 are evenly distributed along the circumferential direction.
Aiming at the defect that the wind resistance coefficient of the existing common overhead insulated cable is high under high wind speed, the raised lines and the grooves are added by changing the surface layer structure of the overhead insulated cable, when the overhead insulated cable is in a wind field, because the boundary layer separation occurs on the leeward side, the backflow area is relatively small, the pressure difference resistance of the cable is reduced, although the friction resistance of the overhead insulated cable in the boundary layer is increased, the pressure difference resistance is the main part of the resistance, the total resistance is small, the resistance coefficient is correspondingly reduced, and the wind pressure of the lead is reduced. The wind resistance coefficient of the wind power cable is lower than 20m/s at low wind speed, is the same as the wind resistance coefficient of the common overhead insulated cable with the same diameter, and is reduced by 20-35% and the noise is reduced by 20-30% in the high wind speed field with the high wind speed exceeding 25m/s to 50 m/s.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (5)
1. The utility model provides a low wind pressure low noise aerial insulated cable which characterized in that: including conductor (1) and insulating layer (2), conductor (1) is formed by a plurality of metal single lines (1.1) transposition, conductor (1) surface cladding insulating layer (2), insulating layer (2) surface is provided with spiral raised sand grip (2.1) and recess (2.2) along cable length direction.
2. The low wind pressure low noise aerial insulated cable of claim 1, characterized in that: the convex strips (2.1) and the grooves (2.2) are uniformly distributed along the circumferential direction.
3. The low wind pressure low noise aerial insulated cable of claim 1, characterized in that: the conductor (1) is formed by twisting a plurality of round or special-shaped metal single wires.
4. The low wind pressure low noise aerial insulated cable of claim 1, characterized in that: the insulating layer (2) is made of polytetrafluoroethylene, cross-linked polyethylene or fluorinated ethylene propylene.
5. The low wind pressure low noise aerial insulated cable of claim 1, characterized in that: 2-6 raised ridges (2.1) and 2 grooves (2.2) in a spiral mode are arranged on the outer surface of the insulating layer (2) along the length direction of the lead, and the height of each ridge (2.1) is 2-4 mm; the height of the groove (2.2) is 2-3 mm, the depth is 1-2 mm, and the width is 2-4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121617310.XU CN215417569U (en) | 2021-07-16 | 2021-07-16 | Low wind pressure low noise aerial insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121617310.XU CN215417569U (en) | 2021-07-16 | 2021-07-16 | Low wind pressure low noise aerial insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215417569U true CN215417569U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121617310.XU Active CN215417569U (en) | 2021-07-16 | 2021-07-16 | Low wind pressure low noise aerial insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215417569U (en) |
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2021
- 2021-07-16 CN CN202121617310.XU patent/CN215417569U/en active Active
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