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High-water-blocking high-voltage crosslinked electric power cable

A cross-linked power cable, water-type technology, applied in power cables, power cables with shielding/conductive layers, insulated cables, etc., can solve the problems of limited water blocking effect of waterproof means and restricting the use of high-voltage cross-linked cables, etc. Achieve good water blocking effect, good economic and social benefits, and prolong service life.

Pending Publication Date: 2019-04-23
宁波日月电线电缆制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water blocking effect of the above waterproof methods is limited, which limits the use of high-voltage cross-linked cables in areas near water

Method used

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  • High-water-blocking high-voltage crosslinked electric power cable
  • High-water-blocking high-voltage crosslinked electric power cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The cable core of the high-voltage water-resistance type high-voltage cross-linked power cable in this embodiment 1 is provided with the conductor 1, the conductor shielding layer 2, the insulating layer 3, the insulating shielding layer 4, the water-blocking buffer layer 5, the metal sheathing Sheath 6 and non-metal sheath layer 7.

[0043] The conductor is made of 61 copper wires with a diameter of 2.5mm and 4 polyethylene strips with a diameter of 2.5mm. The stranded conductor is heated and overmolded to make the polyethylene strip in the conductor melt and fill the entire stranded conductor gap. The extrusion material of the conductor shielding layer and the insulating shielding layer is a mixture of polyethylene and carbon black, and the mass of carbon black is 8% of the mass of polyethylene. The extruded material of the insulating layer is cross-linked polyethylene with a thickness of 10.5mm. The water-blocking buffer layer is polypropylene wrapping tape. The m...

Embodiment 2

[0045] The cable core of the high-voltage water-resistance type high-voltage cross-linked power cable of this embodiment 2 is provided with the conductor 1, the conductor shielding layer 2, the insulating layer 3, the insulating shielding layer 4, the water-blocking buffer layer 5, the metal sheathing Sheath 6 and non-metal sheath layer 7.

[0046] The conductor is made of 49 tinned copper wires with a diameter of 2.5mm and 3 polyethylene strips with a diameter of 2.6mm. The stranded conductor is heated and overmolded to make the polyethylene strips in the conductor melt and fill the entire strand. Gaps in the conductor. The extrusion material of the conductor shielding layer and the insulating shielding layer is a mixture of polyethylene and carbon black, and the mass of carbon black is 10% of the mass of polyethylene. The extruded material of the insulating layer is cross-linked polyethylene with a thickness of 10.5mm. The water-blocking buffer layer is polyester non-woven...

Embodiment 3

[0048] The cable core of the high-voltage water-resistance type high-voltage cross-linked power cable in this embodiment 3 is provided with the conductor 1, the conductor shielding layer 2, the insulating layer 3, the insulating shielding layer 4, the water-blocking buffer layer 5, the metal sheathing Sheath 6 and non-metal sheath layer 7.

[0049] The conductor is made of 65 aluminum wires with a diameter of 2.8mm and 5 polyethylene strips with a diameter of 2.5mm. The stranded conductor is heated and overmolded to make the polyethylene strip in the conductor melt and fill the entire stranded conductor. gap. The extrusion material of the conductor shielding layer and the insulating shielding layer is a mixture of polyethylene and carbon black, and the mass of carbon black is 12% of the mass of polyethylene. The extruded material of the insulating layer is cross-linked polyethylene with a thickness of 10.5mm. The water-blocking buffer layer is polyester non-woven fabric. Th...

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Abstract

The invention belongs to the technical field of a cable, and relates to a cable, in particular to a high-water-blocking high-voltage crosslinked electric power cable. The cable comprises a single cable core, wherein a conductor of the cable core is formed by twisting a plurality of metal wires and a plurality of polyethylene strips; the conductor formed through twisting passes through a heating molding device, so that the polyethylene strips in the conductor is heated to a molten state and fully fills the gap of the whole twisted conductor.

Description

technical field [0001] The invention belongs to the technical field of cables and relates to a cable, in particular to a high-resistance water-type high-voltage cross-linked power cable. Background technique [0002] Cross-linked cable is the abbreviation of cross-linked polyethylene (XLPE) insulated cable. Due to its good electrical performance and heat resistance, large transmission capacity, light structure, easy to bend, simple accessory joints, convenient installation and laying, and not subject to height drop In particular, there is no risk of oil leakage and fire hazards, so it is widely welcomed by users and continues to develop into high-pressure and ultra-high-pressure fields. In terms of low voltage, it has generally replaced polyvinyl chloride insulated cables, and in terms of high voltage and ultra-high voltage, there is also a trend of gradually replacing oil-paper insulated cables. [0003] However, there are also accidents in the use of cross-linked cables, ...

Claims

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Application Information

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IPC IPC(8): H01B9/00H01B7/285H01B9/02H01B13/02
CPCH01B7/285H01B9/00H01B9/02H01B13/02
Inventor 应存世李光运
Owner 宁波日月电线电缆制造有限公司