Large-section support-type expanded-diameter conductor

Abstract

The utility model discloses a large-cross-section support type expanded diameter conductor, which comprises a support core and two stranded layers which are concentrically and tightly stranded along the circumferential direction of the support core, the stranded layer is formed by stranding aluminum / aluminum alloy wires; or the stranded layer is formed by stranding the aluminum-clad steel and aluminum alloy wire mixed stranded wire and the aluminum / aluminum alloy wire; or the stranded layer is formed by stranding the aluminum-clad steel and aluminum alloy wire mixed stranded wire, the plastic molded wire and aluminum alloy wire mixed stranded wire and the aluminum / aluminum alloy wire. The system can be applied to an extra-high voltage transformer substation and has feasibility.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of conductor for extra-high voltage substation, more specifically, the utility model relates to a large cross section support type expanded diameter conductor. BACKGROUND

[0002] At present, the standard NB / T 42106-2016 "aluminum pipe support type heat-resistant aluminum alloy expanded diameter conductor" does not stipulate 1000mm 2 aluminum alloy profile line expanded diameter conductor specification, but many 750kV and 1000kV substations are in urgent need of large cross section support type expanded diameter conductor, the product has large current-carrying capacity, good anti-corona performance, can replace traditional galvanized flexible tube expanded diameter conductor, and has excellent anti-ice and snow and wind load functions due to the profile structure of the outer surface. 2 In the existing standard NB / T42106-2016 "aluminum pipe support type heat-resistant aluminum alloy expanded diameter conductor", the number of single wires in the 900mm Utility model content

[0003] The utility model discloses a large cross section support type expanded diameter conductor structure, which can be applied to an extra-high voltage substation and can be produced on a φ630 type 84 disc (12+18+24+30) 4 segment stranded cage frame stranding machine.

[0004] The utility model discloses the technical scheme adopted to solve the technical problem is: a large cross section support type expanded diameter conductor, comprising a support core and a stranded layer concentrically and tightly stranded along the circumference of the support core, the stranded layer is two layers.

[0005] The stranded layer is stranded by aluminum / aluminum alloy wire, or,

[0006] The stranded layer is stranded by aluminum clad steel and aluminum alloy wire mixed stranded wire, aluminum / aluminum alloy wire, or,

[0007] The stranded layer is stranded by aluminum clad steel and aluminum alloy wire mixed stranded wire, plastic profile line and aluminum alloy wire mixed stranded wire, and aluminum / aluminum alloy wire.

[0008] As a further scheme of the utility model, the support core is a corrugated aluminum pipe, a corrugated aluminum alloy pipe, a smooth aluminum pipe or a smooth aluminum alloy pipe.

[0009] As a further scheme of the utility model, the thickness of the support core is 0.5-4.0mm, and the corrugation depth of the corrugated aluminum pipe or the corrugated aluminum alloy pipe is 1-5mm, and the pitch is 10-40mm.

[0010] As a further scheme of the utility model is: the support core is formed by 1-2 layers of aluminum wire or aluminum alloy wire, and the single wire of the aluminum wire or aluminum alloy wire is a solid wire or a hollow wire.

[0011] As a further scheme of the utility model is: the aluminum / aluminum alloy wire is an aluminum wire, an aluminum alloy wire, a hard aluminum wire, a semi-hard aluminum wire, an annealed aluminum wire or a carbon nanotube reinforced aluminum-based conductive wire; the aluminum / aluminum alloy wire is in a trapezoidal, Z-shaped, S-shaped or arrowhead shape.

[0012] As a further scheme of the utility model is: the shape of the aluminum-coated steel and aluminum alloy wire mixed wire is a non-circular single wire.

[0013] As a further scheme of the utility model is: the shape of the aluminum-coated steel and aluminum alloy wire mixed wire is a trapezoidal, Z-shaped, S-shaped or arrowhead-shaped single wire.

[0014] As a further scheme of the utility model is: the plastic profile wire is a non-circular single wire.

[0015] As a further scheme of the utility model is: the shape of the plastic profile wire and aluminum alloy wire mixed wire is a trapezoidal, Z-shaped, S-shaped or arrowhead-shaped single wire.

[0016] As a further scheme of the utility model is: the number of the aluminum-coated steel wire and plastic profile wire is 1-30.

[0017] The utility model at least has the following beneficial effects:

[0018] The large-section support type expanded diameter conductor structure can be produced on a φ630 type 84 disc (12+18+24+30) 4-section stranding cage frame stranding machine, and the final product is a 1000mm2 support type expanded diameter conductor, which can be applied to an extra-high voltage transformer substation.

[0019] Other advantages, objects and features of the utility model will be embodied partly through the following description, and will be understood by those skilled in the art through research and practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is a large-section support type expanded diameter conductor structure schematic view of an embodiment of the utility model;

[0021] Fig. 2 is a large-section support type expanded diameter conductor structure schematic view of another embodiment of the utility model.

[0022] Among them, 1-smooth aluminum alloy pipe, 2-aluminum / aluminum alloy wire, 3-aluminum-coated steel and aluminum alloy wire mixed wire, 4-plastic profile wire and aluminum alloy wire mixed wire, 5-irregular aluminum wire or irregular aluminum alloy wire formed by stranding. DETAILED DESCRIPTION

[0023] The utility model will be explained in detail and completely below in combination with the drawings. The ordinary skilled in the art can realize the utility model based on these explanations. Before the utility model is explained in combination with the drawings, it needs to be pointed out specially: the technical schemes and technical features provided in each part including the following explanation in the utility model can be combined mutually in the case of no conflict.

[0024] In addition, the embodiments of the utility model involved in the following explanation are usually only the embodiments of a part of the utility model, instead of all the embodiments. Therefore, all the other embodiments obtained by the ordinary skilled in the art based on the embodiments in the utility model without making creative labor should belong to the scope of protection of the utility model.

[0025] The utility model will be explained in detail and completely below in combination with the drawings. The ordinary skilled in the art can realize the utility model based on these explanations. Before the utility model is explained in combination with the drawings, it needs to be pointed out specially: the technical schemes and technical features provided in each part including the following explanation in the utility model can be combined mutually in the case of no conflict.

[0026] As shown in Figs. 1-2 The utility model provides a big section support type expanded diameter wire, including support core and the close stranding layer along the support core circumferential concentric stranding, the stranding layer is two layers;

[0027] The stranding layer is stranding by aluminium / aluminium alloy wire 2;Or,

[0028] The stranding layer is stranding by aluminium clad steel and aluminium alloy wire mixed stranding wire 3, aluminium / aluminium alloy wire 2;Or,

[0029] The stranding layer is stranding by aluminium clad steel and aluminium alloy wire mixed stranding wire 3, plastic type wire and aluminium alloy wire mixed stranding wire 4, aluminium / aluminium alloy wire 2.

[0030] The technical scheme can also include the following technical details to better realize the technical effect: the support core is corrugated aluminium pipe, corrugated aluminium alloy pipe, smooth aluminium pipe or smooth aluminium alloy pipe 1.

[0031] The specific preparation method is: using aluminium (alloy) band welding into a circle or using Kang Fang machine or extruding seamless round aluminium (alloy) pipe by aluminium press, then using the texture forming.

[0032] The technical scheme can also include the following technical details to better realize the technical effect: the thickness of the support core is 0.5-4.0mm, and the aluminium (alloy) band uses the aluminium band and aluminium alloy band meeting the standard GB / T 3880. The corrugated aluminium pipe or corrugated aluminium alloy pipe texture depth is 1-5mm, and the pitch is 10-40mm.

[0033] The technical scheme can further include the following technical details to better achieve the technical effects: the support core 5 is formed by twisting 1-2 layers of special-shaped aluminum wires or special-shaped aluminum alloy wires, the single wire of the special-shaped aluminum wire or the special-shaped aluminum alloy wire is a solid wire or a hollow wire, and the special-shaped aluminum wire or the special-shaped aluminum alloy wire is a non-circular single wire.

[0034] The technical scheme can further include the following technical details to better achieve the technical effects: the aluminum / aluminum alloy wire 2 is an aluminum wire, an aluminum alloy wire, a hard aluminum wire, a semi-hard aluminum wire, an annealed aluminum wire or a carbon nanotube reinforced aluminum-based conductive wire; and the aluminum / aluminum alloy wire 2 is in a trapezoidal, Z-shaped, S-shaped or arrowhead shape. Preferably, the aluminum wire, the aluminum alloy wire, the hard aluminum wire, the semi-hard aluminum wire and the annealed aluminum wire have a conductivity of greater than or equal to 52.5% IACS, and the carbon nanotube reinforced aluminum-based conductive wire has a conductivity of greater than or equal to 65% IACS.

[0035] The technical scheme can further include the following technical details to better achieve the technical effects: the aluminum-coated steel and aluminum alloy wire mixed twisted wire 3 is in a non-circular single wire shape.

[0036] The technical scheme can further include the following technical details to better achieve the technical effects: the aluminum-coated steel and aluminum alloy wire mixed twisted wire 3 is in a trapezoidal, Z-shaped, S-shaped or arrowhead single wire shape. Preferably, the aluminum-coated steel wire has a conductivity of 14%-40% IACS, and preferably 20% and 40% IACS.

[0037] The technical scheme can further include the following technical details to better achieve the technical effects: the plastic profile wire is a non-circular single wire.

[0038] The technical scheme can further include the following technical details to better achieve the technical effects: the plastic profile wire and the aluminum alloy wire mixed twisted wire 4 is in a trapezoidal, Z-shaped, S-shaped or arrowhead single wire shape, the plastic profile wire is a single wire made of cross-linked polyolefin or polytetrafluoroethylene or polyperfluoroethylene, and all are commercially available products.

[0039] The technical scheme can further include the following technical details to better achieve the technical effects: the number of the aluminum-coated steel wire and the plastic profile wire is 1-30, and the mixed twisted wire with the aluminum-coated steel wire and the plastic profile wire can be placed in the inner layer or the outer layer of the twisted layer, or can be placed in both the inner layer and the outer layer of the twisted layer.

[0040] In one embodiment, a large-section support type expanded diameter conductor is manufactured, the support core has a nominal outer diameter of φ44.0 mm, a tolerance of ±0.5 mm, and a total area of the twisted layer of 800±16 mm 2 , the number of single wires is 55-60, and the preferred number is 58, so that the φ630 type 84 disc (12+18+24+30) 4-section stranding cage frame stranding machine can be used for production, and the outer diameter of the finished product is 54.7-55.5 mm, and the preferred outer diameter is 55.2 mm.

[0041] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, and can be applied to various fields suitable for the present application. Those skilled in the art can easily implement other modifications, and thus the present application is not limited to specific details and the embodiments shown and described herein.

Claims

1. A large cross-section supported type expanded conductor, characterized by, The support core and the twisted layer are concentrically and tightly twisted along the circumference of the support core, and the twisted layer is two layers; The support core is formed by twisting 1-2 layers of aluminum wires or aluminum alloy wires, and the single wire of the aluminum wires or aluminum alloy wires is a solid wire or a hollow wire; The twisted layer is twisted by aluminum / aluminum alloy wires; the aluminum / aluminum alloy wires are aluminum wires, aluminum alloy wires, hard aluminum wires, semi-hard aluminum wires, annealed aluminum wires, or carbon nanotube reinforced aluminum-based conductive wires; or, The twisted layer is twisted by aluminum-clad steel and aluminum alloy wire mixed twisted wires, aluminum / aluminum alloy wires; the aluminum-clad steel and aluminum alloy wire mixed twisted wires are non-circular single wires, and the shapes are trapezoidal, Z-shaped, S-shaped, or arrowhead-shaped single wires; the aluminum / aluminum alloy wires are aluminum wires, aluminum alloy wires, hard aluminum wires, semi-hard aluminum wires, annealed aluminum wires, or carbon nanotube reinforced aluminum-based conductive wires; or, The twisted layer is twisted by aluminum-clad steel and aluminum alloy wire mixed twisted wires, plastic profiled wires, and aluminum alloy wire mixed twisted wires, aluminum / aluminum alloy wires; the aluminum-clad steel and aluminum alloy wire mixed twisted wires are non-circular single wires, and the shapes are trapezoidal, Z-shaped, S-shaped, or arrowhead-shaped single wires; the aluminum / aluminum alloy wires are aluminum wires, aluminum alloy wires, hard aluminum wires, semi-hard aluminum wires, annealed aluminum wires, or carbon nanotube reinforced aluminum-based conductive wires; the plastic profiled wires and aluminum alloy wire mixed twisted wires are non-circular single wires, and the shapes are trapezoidal, Z-shaped, S-shaped, or arrowhead-shaped single wires; Moreover, The twisted layer contains at least two of carbon nanotube reinforced aluminum-based conductive wires, aluminum-clad steel and aluminum alloy wire mixed twisted wires, and plastic profiled wires and aluminum alloy wire mixed twisted wires.

Images