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Improved waterproof cross-linked polyethylene cable

A cross-linked polyethylene, an improved technology, applied to power cables, insulated cables, cables with shielding/conducting layers, etc., can solve the problems of increased diameter and weight, uneconomical, inconvenient transportation, etc.

Inactive Publication Date: 2017-01-04
WUXI GREAT WALL ELECTRIC WIRE & CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For waterproofing, sheathing made of metals such as aluminum and lead seems to be effective, but it is not economical and increases in diameter and weight, making it difficult to transport

Method used

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  • Improved waterproof cross-linked polyethylene cable

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Experimental program
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Effect test

Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing:

[0014] Such as figure 1 As shown, an improved waterproof cross-linked polyethylene cable includes a cable core, the cable core is formed by twisting a plurality of insulated cores, and the insulated cores are formed by conductor 1 and extruded on the conductor in turn The outer semiconductive conductor shielding layer 2, the cross-linked polyethylene insulating layer 3, the semiconducting insulating shielding layer 4 and the metal shielding layer 5 are composed. Fill the gap of the cable core with a water-blocking filling layer 6; extrude the outer sheath 8 on the outermost layer of the cable core; the main improvement is that a laminated waterproof thin layer 7 is provided between the outside of the cable core and the outer sheath .

[0015] Principle of the invention is:

[0016] Location of the waterproof metal barrier: The laminated metal tape is incorporated in the ...

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Abstract

The invention discloses an improved waterproof cross-linked polyethylene cable. The improved waterproof cross-linked polyethylene cable comprises a cable core; the cable core is formed by stranding a plurality of insulating line cores; a gap of the cable core is filled with a water blocking filling layer; the outermost layer of the cable core is wrapped with an outer sheath in an extruding manner; a laminated waterproof thin layer is arranged between the outer side of the cable core and the outer sheath. The improved waterproof cross-linked polyethylene cable has the characteristics of higher safety, better water resistance, longer service life, easiness in machining, more convenience in construction and maintenance and the like.

Description

technical field [0001] The invention relates to the field of power cables, in particular to an improved waterproof cross-linked polyethylene cable. Background technique [0002] Cross-linked polyethylene insulated polyethylene sheathed power cables (XLPE cables) have outstanding electrical properties, and are easy to install and maintain, so they have been widely used in underground distribution and transmission lines. [0003] It is well known that XLPE cables are most susceptible to damage due to water trees, requiring XLPE insulation to have a high degree of water resistance, however its saturated water content is low. It has been reported that the occurrence of water trees in the insulating layer of XLPE cables is not caused by the simultaneous extrusion of three layers, but caused by the moisture penetration of cables used in distribution lines in a humid environment for many years . Water trees can be avoided if water is prevented from penetrating the insulation thro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/282H01B9/02H01B7/17
CPCY02A30/14H01B7/282H01B7/17H01B9/02
Inventor 孔凯
Owner WUXI GREAT WALL ELECTRIC WIRE & CABLE