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High-voltage shielding flexible cable

A shielded cable, high-voltage technology, applied in the field of high-voltage shielded flexible cables, can solve the problems of reducing the current carrying capacity of the cable conductor, affecting the heat dissipation of the cable, and easy salt formation on the surface of the cable, etc.

Inactive Publication Date: 2012-04-04
成都亨通光通信有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a power supply cable for transmitting electric energy, the surface of the cable laid on the surface of the lake or seawater supported by buoys is prone to salt accumulation, and it will become thicker and thicker, which not only increases the weight of the cable, but also easily corrodes the cable, and affects the heat dissipation of the cable. It can only reduce the current carrying capacity of the cable conductor and the service life of the cable. Based on the above reasons, a high-performance cable with a service life that meets the design requirements and excellent performance is suitable for the main line of electric energy transmission in the salt lake and sea area. schedule, the choice of material for the sheath that directly protects the cable is particularly important

Method used

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Embodiment Construction

[0004] The high-voltage shielded flexible cable of the present invention is formed through the following processes: wire drawing, tinning, stranding or re-twisting, three-layer co-extrusion, copper wire braiding, cabling and wrapping, extrusion of the inner sheath, stranding auxiliary wires, extrusion Outer sheath, inspection. Since the cable insulation adopts a three-layer co-extrusion method, in order to prevent the conductor shielding layer from entering the conductor gap, a layer of semi-conductive tape is wrapped around the conductor, and then the semi-conductive layer is extruded. The two together play the role of uniform electric field. The conductor is wrapped with a semiconductor tape and a layer of polypropylene PP tape is wrapped around it at the same time, with an overlapping rate of 15-20%, which is used to protect the semiconductive layer from pollution and mechanical damage, and is peeled off before the insulating three-layer co-extrusion process. A layer of sem...

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Abstract

The invention discloses a manufacturing process for a high-voltage shielding flexible cable. Cable insulation adopts a three-layer coextrusion mode. A certain amount of specific substance such as meltable polytetrafluoroethylene is added into the formula of a sheath, so that a conductor shielding layer is prevented from entering a conductor gap, surface finish of the cable is guaranteed, and salt crust on the surface of the cable jacket is avoided.

Description

technical field [0001] The invention relates to a power cable product, in particular to a high-voltage shielded flexible cable. Background technique [0002] As a power supply cable for transmitting electric energy, the surface of the cable laid on the surface of the lake or seawater supported by buoys is prone to salt accumulation, and it will become thicker and thicker, which not only increases the weight of the cable, but also easily corrodes the cable, and affects the heat dissipation of the cable. It can only reduce the current carrying capacity of the cable conductor and the service life of the cable. Based on the above reasons, a high-performance cable with a service life that meets the design requirements and excellent performance is suitable for the main line of electric energy transmission in the salt lake and sea area. The material selection for the sheath that directly protects the cable is particularly important. Contents of the invention [0003] The inventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28C08L27/18C08K13/02C08K3/34C08K3/36C08K3/04C08K3/22H01B9/00H01B7/12
Inventor 孙义兴张腊生谭会良许建国廖郑洪李炳惠张华李涛陈曲谢河彬
Owner 成都亨通光通信有限公司
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