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Insulating aerial aluminum alloy cable and preparation method thereof

A technology of aluminum alloy and aluminum alloy monofilament, which is applied in the direction of insulated cables, cable/conductor manufacturing, insulated conductors, etc., can solve the problems of increased costs for changes and transformations, and achieve the goals of increasing current carrying capacity, promoting transformation, and reducing transformation costs Effect

Active Publication Date: 2016-05-11
陕西永光电力电缆制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the specification of the cable is increased, it will inevitably result in the change of the line of the old line tower, which will increase the cost of the transformation

Method used

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  • Insulating aerial aluminum alloy cable and preparation method thereof
  • Insulating aerial aluminum alloy cable and preparation method thereof
  • Insulating aerial aluminum alloy cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] according to figure 1 As shown, the insulated overhead aluminum alloy cable according to Embodiment 1 of the present invention includes an aluminum alloy cable core 1 and a shielding layer 2 and an insulating layer 3 which are sequentially extruded outside the aluminum alloy cable core 1 from inside to outside; Layer 2 is extruded by silane cross-linked polyolefin semi-conductive material; the insulating layer 3 is extruded by silane cross-linked polyethylene material; It is a compact circular structure made of 3mm heat-resistant aluminum alloy monofilament 101 twisted.

[0038] Such as figure 1 As shown in , the structure of the preferred aluminum alloy cable core 1 is as follows: aluminum alloy monofilaments 101 are arranged in 4 layers, including 1 inner layer aluminum alloy monofilament 11, 6 middle layer aluminum alloy monofilaments 12, 12 times The outer layer aluminum alloy monofilaments 13 and 17 outer layer aluminum alloy monofilaments 14 are twisted in oppos...

Embodiment 2

[0047] Compared with the structure of the embodiment 1, the insulated overhead aluminum alloy cable of the embodiment 2 is different in that the insulating layer is obtained by extrusion molding of a silane cross-linked polyethylene material and then subjected to irradiation treatment. The other structures are the same as those of the insulated overhead aluminum alloy cable in Example 1.

[0048] Compared with the preparation method of Example 1, the preparation method of the insulated overhead aluminum alloy cable in Example 2 differs in that the shielding layer in Step 2 and the insulating layer in Step 3 are separately extruded, and different crosslinking methods are used. Specifically, the cable with shielding layer extruded in step 2 is subjected to steam cross-linking, and the steam cross-linking parameters are: at a temperature of 110°C-120°C and a pressure of 0.2-0.4MPa steam cross-linking for 3 hours; then extrude the insulating layer of the cable after steam cross-li...

Embodiment 3

[0050] Such as figure 2 with image 3 As shown, the insulated overhead aluminum alloy cable of the present embodiment 3 is based on the insulated overhead aluminum alloy cable of the embodiment 1 or the embodiment 2, and the insulating layer 3 of the insulated overhead aluminum alloy cable also includes the outer layer connected in sequence. The shielding layer 4 and the outer insulating layer 5, and a plurality of polyurethane foam fillets 6; in the manner of being wound on the outer surface of the outer shielding layer 4, the plurality of polyurethane foam fillets 6 are embedded at intervals along the outer shielding layer 4 and the connection interface of the outer insulating layer 5. Wherein, the outer shielding layer is extruded by silane cross-linked polyolefin semi-conductive material; the outer insulation is obtained by extrusion molding of silane cross-linked polyethylene material containing carbon black and subjected to irradiation treatment, wherein the carbon bla...

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Abstract

The invention provides an insulating aerial aluminum alloy cable and a preparation method thereof. The cable comprises an aluminum alloy cable core, and a shielding layer and an insulating layer which are formed outside the aluminum alloy cable core from inside to outside in turn through extrusion. The shielding layer is formed by silane crosslinked polyolefin semi-conductive material through extrusion. The insulating layer is formed by silane crosslinked polyethylene material through extrusion or obtained through extrusion formation of the silane crosslinked polyethylene material and then irradiation processing. The aluminum alloy cable core has a compressive circular structure manufactured by 7-91 single heat-resistant aluminum alloy wires through twisting, and the cross section of the wires is circular. According to the cable, carrying capacity for transmission is enabled to be higher than original carrying capacity and cross section efficiency is enhanced for 40%-60% without changing the existing cable specifications. Reconstruction of old lines of existing urban and rural power grids can be facilitated, and reconstruction cost can be greatly reduced and reconstruction cost can be saved.

Description

technical field [0001] The invention relates to the technical field of insulated overhead cables, in particular to an insulated overhead aluminum alloy cable and a preparation method thereof. Background technique [0002] In order to reduce the investment cost of the power grid and the requirements of special environments (lines passing through the jungle, etc.) in the original urban and rural power grids; medium and low voltage lines mostly use insulated overhead cables. With the rapid development of China's economy, the requirements of new rural construction and the increase of per capita electricity consumption, the original old lines cannot meet the existing needs, and the transformation of overhead lines is imperative. If the specification of the cable is increased, it will inevitably result in the change of the line of the old line tower, resulting in an increase in the transformation cost. Contents of the invention [0003] In view of the above-mentioned defects an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/02H01B7/29H01B7/02H01B9/02H01B13/02H01B13/14
CPCH01B1/023H01B7/02H01B7/29H01B7/292H01B9/02H01B13/02H01B13/14
Inventor 路建卫
Owner 陕西永光电力电缆制造有限公司
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