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Submarine cable and construction method thereof

A submarine cable and cable technology, applied in the field of power cables, can solve difficult problems such as the ampacity of the landing section of the submarine cable, and achieve the effect of increasing the ampacity and strong operability

Active Publication Date: 2014-01-22
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a submarine cable and its construction method for the problem that it is difficult to solve the problem of small ampacity in the landing section of the submarine cable

Method used

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  • Submarine cable and construction method thereof
  • Submarine cable and construction method thereof
  • Submarine cable and construction method thereof

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Embodiment Construction

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as...

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Abstract

A submarine cable sequentially comprises a submarine section, an ashore section and an air section, wherein the ashore section comprises a cable body, and the cable body comprises a cable core and a lining layer which is wrapped on the outer surface of the cable core; the cable body is sleeved in a steel pipe, the steel pipe is of a hollow structure, and a heat radiating medium of which the heat resistance coefficient is smaller than that of air is arranged between the inner wall of the steel pipe and the lining layer of the cable body. As the heat resistance coefficient of the heat radiating medium is smaller than that of air, the heat of the ashore section can be conveniently radiated, and the current carrying capacity of the ashore section is improved. Meanwhile, the unvaried cross section of a conductor of the ashore section and the arrangement of the steel pipe ensure that the ashore section can adapt to mechanical stress during laying or reworking. Therefore, the current carrying capacity of the ashore section of the submarine cable is improved, and the submarine cable has strong operability. The invention further provides a submarine cable construction method.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a submarine cable and a construction method thereof. Background technique [0002] With the development and utilization of marine energy in our country, more and more submarine cables are used as current-carrying equipment for submarine power transmission, and the technical requirements are also getting higher and higher. Among them, the laying of submarine cables is divided into three sections, namely, the mid-sea section, the landing section and the air section. The cooling condition of the environment where the landing section is located is the worst, so the carrying capacity of the landing section is the smallest among the three sections. [0003] At present, there are usually two methods to solve the problem of small cable carrying capacity, one is to increase the cross-sectional area of ​​the conductor, and the other is to use all-copper monofilament armor. Increasin...

Claims

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Application Information

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IPC IPC(8): H01B7/14H01B7/42H01B7/20H01B13/22H01B13/004
Inventor 陆莹郑明玉素娇李煜东蔡传卫刘刚胡倩楠冯文煜叶晓君曹京荥
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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