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Flexible hollow cable

A hollow cable, flexible technology, used in power cables, multi-core cable end components, cables, etc., can solve problems such as increasing resistivity and failure rate, shortening cable service life, and limiting the length of cable spools. The number of intermediate joints, ensuring normal service life and good heat dissipation conditions

Inactive Publication Date: 2011-07-13
谭锐
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The conductor of the existing alternating current cable is a solid conductor, which mainly has the following disadvantages: 1. The external surface of the existing cable conductor is small, the temperature rises quickly, and the heat dissipation performance is low; 2. Due to the skin effect of the alternating current, the current carrying capacity of the cable Small, large loss; 3. Due to the rapid temperature rise, the cable insulation layer is easy to age, which shortens the service life of the cable; 4. The existing cable is heavy, which increases the difficulty of construction; 5. The existing cable is heavy and limits the cable distribution Length, resulting in a large number of intermediate joints on the line, increasing the resistivity and failure rate

Method used

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Embodiment Construction

[0034] As shown in Figures 1 and 2, the cable in this embodiment includes multiple wires 2 (mostly copper or aluminum) and an insulating outer sheath 1 covering all wires. The wires 2 are arranged in a hollow arrangement, and the wires are twisted. Weave tight contact, such as twisting the opposite direction of the multi-layer conductor barrier to prevent the adult cable from twisting. The central hollow layer formed after the wires are arranged is filled with a lightweight elastic filler 3. In order to support the lateral pressure of the cable, a steel armor layer 4 is wound around the lightweight elastic material. The steel armor layer is the supporting armor body, which is made of spiral steel armor or metal corrugated pipe (metal corrugated pipe is similar to the shower head and Metal hose of water pipe), a cross-linked polyethylene insulation layer 6 is provided between the steel armor layer 4 and the wire. The multi-strand wire is also provided with a shielding layer 5 w...

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Abstract

The invention discloses a flexible hollow cable. The cable comprises a plurality of strands of wires and an insulating outer sheath (1) which covers the wires, and is characterized in that: the wires (2) are hollowly arranged and are mutually and closely arranged; and a hollow layer which is formed after the wires are arranged is filled with a light elastic filler (3) or is supported by a spiral spring (17). The wires of the cable are hollowly arranged, so that a skin effect of alternating current is utilized, the cross section of a conductor is effectively utilized, and the alternating current resistance and the power loss are low. Meanwhile, the cable has a large external contact surface due to hollow arrangement, good heat dissipation conduction and low temperature rise and contributes to heat dissipation of a conductor material, so that the normal service life of the cable is guaranteed.

Description

Technical field [0001] The invention relates to a flexible hollow cable, which belongs to the technical field of cable and wire. Background technique [0002] The conductor of the existing alternating current cable is a solid conductor, which has the following disadvantages: 1. The outer surface of the existing cable conductor is small, the temperature rises quickly, and the heat dissipation performance is low; 2. The current carrying capacity of the cable is caused by the skin effect of the alternating current. Small, large loss; 3. Because of the rapid temperature rise, the cable insulation layer is easy to age, which shortens the service life of the cable; 4. The existing cable is heavy in quality, which increases the difficulty of construction; 5. The existing cable is heavy in quality, which limits the cable distribution Length, resulting in a large number of intermediate joints on the line, increasing the resistivity and failure rate. Summary of the invention [0003] In or...

Claims

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Application Information

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IPC IPC(8): H01B9/00H01B9/02H01R11/11H01R11/26
Inventor 谭锐谭钢
Owner 谭锐
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