Full-water-blocking sea power cable

A submarine power cable and water blocking technology, which is applied in the direction of submarine cables, power cables with shielding layers/conductive layers, etc., can solve the problems of vertical water blocking and economic loss, etc., to reduce the length of scrapping, reliable and full water blocking Effect

Active Publication Date: 2013-01-09
SHANGHAI ELECTRIC CABLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the submarine power cable is laid on a deep seabed (such as greater than 100m), if the submarine power cable is damaged by an external force and the conductor enters water, it will withstand high water pressure and fully expand in time when the water-blocking powder or water-blocking yarn Previously, seawater has penetrated a very deep distance along the conductor, and the purpose of longitudinal water blocking will not be achieved, resulting in greater economic losses

Method used

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  • Full-water-blocking sea power cable

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Embodiment Construction

[0029] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0030] see figure 1 . It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the same time, term...

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Abstract

The invention provides a full-water-blocking sea power cable which sequentially comprises a twisted conductor, a semi-conducting water blocking belt, a conductor shielding layer, an insulating layer, an insulating shielding layer, a lead sleeve, a non-metal sheath, an anti-corrosion layer, a steel wire armoring layer and an outer covering layer from inside to outside. Electricity-conducting sealing glue is filling in gaps of the twisted conductor, the sealing glue is prepared by mixing butyl rubber and carbon black, and a semi-conducting buffer layer for blocking water is arranged between the insulating shielding layer and the lead sleeve. The sea power cable can achieve effective and reliable longitudinal water blocking.

Description

technical field [0001] The invention relates to a water blocking cable, in particular to a fully blocking water submarine power cable, which belongs to the technical field of submarine power cables. Background technique [0002] Since submarine power cables are installed on the seabed with complex environments, they have long been affected by wave impact, seawater corrosion and many unknown factors. Damage largely determines the length of its service life. Usually, submarine power cables use sheaths such as lead sheaths that act as water barriers to achieve radial water resistance. However, although this method can effectively solve the problem of radial water leakage, due to external forces, this sheath may It will be damaged, and the water will diffuse longitudinally along the gaps in the cable, making the rather long cable unusable. When the cable needs to be repaired due to water leakage, in order to reduce the loss, it is hoped that the length of this leakage is as sho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/02H01B7/14
Inventor 徐晓峰孙建生李春刚
Owner SHANGHAI ELECTRIC CABLE RES INST
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