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Sectional type submarine cable

A submarine cable, segmented technology, applied in the direction of submarine cables, insulated cables, cables, etc., can solve problems such as the limitation of the current carrying capacity of the submarine cable, affecting the current carrying capacity of the submarine cable, etc., and achieve the effect of reducing energy loss and uniform discharge.

Active Publication Date: 2012-01-04
SHANGHAI ELECTRIC CABLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the submarine cable is not completely laid underwater, its landing point is still several hundred meters away from the substation. This distance is buried on land, and the carrying capacity of the cable with the above structure on land is higher than that of the substation. It is smaller than the underwater part, so the section of cable buried on land will limit the ampacity of the entire submarine cable and affect the ampacity of the entire submarine cable

Method used

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  • Sectional type submarine cable
  • Sectional type submarine cable
  • Sectional type submarine cable

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Embodiment Construction

[0014] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] Such as figure 1 , 2 , 3, the segmented submarine cable includes a conductor 1, and the conductor 1 is sequentially provided with an inner semiconductive layer 2, an insulating layer 3, an outer semiconductive layer 4, a metal sheath 5, an armor layer 7 and an outer semiconductive layer from the inside to the outside. The quilt layer 8 and the armor layer 7 are galvanized steel wire armor layers. The segmented submarine cable is divided into two parts: an underwater buried section 10 and an onshore buried section 11, wherein a semi-conductive non-metallic sleeve 6 is provided between the metal sleeve 5 and the armor layer 7 of the underwater buried section 10. Conductive non-metallic sheath 6 adopts semi-conductive polyethylene material. An insulating non-metallic sheath 9 is provided between the metal sheath 5 and the armor layer 7...

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Abstract

The invention discloses a sectional type submarine cable comprising a conductor which is provided with an inner semi-conducting layer, an insulating layer, an outer semi-conducting layer, a metal sleeve, an armor layer and an outer covering layer in sequence from inside to outside. The sectional type submarine cable is divided into a submarine burying section and an overland burying section, wherein a semi-conducting non-metal sleeve is arranged between the metal sleeve and the armor layer of the submarine burying section, and an insulated non-metal sleeve is arranged between the metal sleeveand the armor layer of the overland burying section. The submarine cable can not only reduce inductive potential between the metal sleeve and the armor layer and decrease energy consumption, but alsoimprove the carrying capacity of the submarine cable.

Description

technical field [0001] The invention relates to a submarine cable, in particular to a segmented submarine cable with a non-metal sheath. Background technique [0002] At present, submarine cables generally generate induced potential on the metal sheath, so it is necessary to use grounding methods to eliminate it and make it run safely. However, this will cause circulation loss, which greatly reduces the carrying capacity of the cable, and cannot make full use of the cable. The current-carrying capacity of the conductor has caused a waste of resources to a certain extent. The structure of the existing submarine cable generally adds a layer of polyethylene sheath outside the metal sheath, so that it can be used as the anti-corrosion layer of the submarine cable and has insulating properties. In order to eliminate the potential difference between the metal sheath and the armor layer of the submarine cable, the general practice is to peel off the polyethylene sheath every 500 m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/14H01B7/17H01B7/28
CPCY02A30/14
Inventor 孙建生徐晓峰李春刚
Owner SHANGHAI ELECTRIC CABLE RES INST