Novel reinforced extra-high-voltage power cable

A power cable and reinforced technology, which is applied in the field of new reinforced ultra-high voltage power cables, can solve the problems of easy breakage of conductors and short cable life, and achieve the effects of not being easy to break, reducing thermal resistance coefficient, and wide application range

Inactive Publication Date: 2016-01-27
WUXI GREAT WALL ELECTRIC WIRE & CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In addition, many cables now have reinforcing cores, but they are all circular reinforcing cores, and they are all single, so that the conductors in the cables are still easy to break, making the life of the cables short

Method used

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  • Novel reinforced extra-high-voltage power cable

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Embodiment Construction

[0012] Such as figure 1 As shown, in a new type of reinforced ultra-high voltage power cable described in the present invention, the conductor 1 is first arranged in the center of the cable, and five circular reinforcing cores 2 are first arranged in the conductor 1 along the inner edge of the conductor, and then There is a five-sided arc-shaped reinforcement core 3 between the five circular reinforcement cores 2; the structure of the existing reinforcement core is changed, and the 5+1 mode is adopted, which makes the reinforcement of the cable 5 times higher than the original one, making the cable It is more difficult to break, so that the service life of the cable is longer. Even if it is artificially damaged, the conductor is not easy to break; Conductive shielding layer 6, then extrude semiconductive buffer layer 7, corrugated aluminum sheath 8, non-metallic sheath 9 outside semiconductive shielding layer 6; extrude graphite coating layer 10 on the outermost layer of the c...

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Abstract

The invention discloses a novel reinforced extra-high-voltage power cable. The power cable comprises a conductor arranged in the center of the cable; the conductor is wrapped with an inner semi-conducting shielding layer, a crosslinked polyethylene insulating layer, and an outer semi-conducting shielding layer in sequence; the outer semi-conducting shielding layer is extruded with a semi-conducting buffering layer, a corrugated aluminum sheath, and a non-metal sheath; the outermost layer of the cable is extruded with a graphite coating layer; five circular reinforced cores are arranged in the conductor along the inner edge of the conductor; and a quinquelateral arc-shaped reinforced core is arranged among the five circular reinforced cores. The semi-conducting buffering layer provided by the invention adopts an extruded semi-conducting silicone rubber structure so as to reduce sealed and stationary air amount in the buffering layer and to ensure the compactness of the cable structure, so that the carrying capacity of the cable can be effectively improved.

Description

technical field [0001] The invention belongs to the field of power cables, and in particular relates to a novel reinforced ultra-high voltage power cable. Background technique [0002] At present, there is a buffer layer between the metal sheath and the cable core of the ultra-high voltage single-core cable. The buffer layer has semi-conductive properties, which can effectively buffer and weaken the electric field strength, and effectively buffer the cable insulation and metal layer to prevent damage to the insulation. At present, the semiconductive buffer layer is wrapped with a semiconductive buffer tape, and the semiconductive properties of the semiconductive tape and the gap between the metal sheath and the semiconductive tape have an important impact on the partial discharge characteristics of the cable. The thermal resistivity depends largely on the state and amount of air contained in the fibers of the semiconductive tape. When the air does not flow, the more air is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/02H01B7/18
Inventor 张蕴皋孔凯刘磊
Owner WUXI GREAT WALL ELECTRIC WIRE & CABLE
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