CN216311431U

CN216311431U - 35kV corrosion-resistant waterproof crosslinked power cable

Info

Publication number: CN216311431U
Application number: CN202122988911.8U
Authority: CN
Inventors: 陶天宝; 李业胜; 王敏; 何晶晶; 陈浩; 张生; 陶涛
Original assignee: Anhui Huatong Cable Group Co Ltd
Current assignee: Anhui Huatong Cable Group Co Ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-04-15
Anticipated expiration: 2031-12-01

Abstract

The utility model discloses a 35kV corrosion-resistant waterproof crosslinked power cable, which adopts a copper core conductor, three layers of coextrusion insulation are adopted, a copper strip shielding layer is wound outside an insulating layer, a water-blocking tape is wound outside the insulating layer, a water-blocking filling strip is used for filling and rounding during cabling, the water-blocking tape is wound and tightened, a waterproof rubber inner protective layer is extruded, a stainless steel tape is longitudinally wrapped for armoring, and a polyether type polyurethane elastomer with better waterproof performance is selected as a sheath material. The utility model has good waterproof, wear-resistant, corrosion-resistant and aging-resistant performances.

Description

35kV corrosion-resistant waterproof crosslinked power cable

Technical Field

The utility model relates to the technical field of cables, in particular to a 35kV corrosion-resistant waterproof crosslinked power cable.

Background

With the rapid development of the cable industry, the material type selection processing technology of the common power cable is quite mature, but under the condition that special requirements are provided in some special places, the performance of the common power cable cannot completely meet the use requirements, for example, some severe environments such as a production area with high sulfur dioxide content and high humidity, a coastal offshore area with high salinity, a building or other areas always in high humidity and high pollution, an industrial area with high humidity and corrosive atmosphere and the like have higher requirements on the water resistance and corrosion resistance of the product, and therefore, the development of a cable product which can fully meet the requirements on the occasions with serious corrosion caused by moisture, oil and chemical solvents is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to make up for the defects of the prior art and provides a 35kV corrosion-resistant waterproof crosslinked power cable.

The utility model is realized by the following technical scheme:

the utility model provides a corrosion-resistant waterproof crosslinked power cable of 35kV, includes the conductor, and the cladding has semiconduction internal shield layer, crosslinked polyethylene insulating layer, semiconduction external shield layer, copper strips shielding layer and water blocking tape in proper order around covering one in the conductor outside, constitutes the cable core after bunching three conductors, and the cladding has water blocking tape in proper order around covering two, waterproof rubber inner sheath, stainless steel band indulges package armor and polyurethane elastomer sheath in the cable core outside.

The conductor is a copper core soft strand stranded conductor.

And a water-blocking filling strip filling layer is filled on the inner side of the water-blocking tape wrapping layer II.

The utility model has the advantages that: the utility model effectively improves the performances of water resistance, wear resistance, corrosion resistance, aging resistance and the like of the product through the multilayer waterproof and corrosion-resistant design, can fully meet the use requirements in special areas such as seawater, chemical plants and the like, and has good performances of water resistance, wear resistance, corrosion resistance, aging resistance and the like.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in fig. 1, a corrosion-resistant waterproof crosslinked power cable of 35kV, including conductor 1, the cladding has semiconduction inner shield layer 2, crosslinked polyethylene insulating layer 3, semiconduction outer shield layer 4, copper strip shield layer 5 and water-blocking tape around covering 6 in proper order in the 1 outside of conductor, becomes the cable core after twisting three conductor bundles, has water-blocking tape around covering two 8, waterproof rubber inner sheath 9, stainless steel strip indulges package armor 10 and polyurethane elastomer sheath 11 in the cable core outside the cladding in proper order.

The conductor 1 is a copper core soft strand stranded conductor.

And a water-blocking filling strip filling layer 7 is filled inside the water-blocking tape wrapping layer II 8.

The 35kV corrosion-resistant waterproof cross-linked power cable provided by the utility model adopts a copper core conductor, three layers of co-extrusion insulation are adopted, a copper strip shielding layer is wound outside an insulating layer, a water-blocking tape is wound, a water-blocking filling strip is used for filling and rounding during cabling, the water-blocking tape is wound and tightened, a waterproof rubber inner protection layer is extruded, a stainless steel strip is longitudinally wrapped for armoring, and a polyether type polyurethane elastomer material with better waterproof performance is selected as an outer sheath. The product has better performances of water resistance, wear resistance, corrosion resistance, aging resistance, strong mechanical impact resistance and the like. The product is suitable for industrial areas with high salinity and coastal areas, chemical plants, swimming pools, shipyards and the like.

The product adopts a copper core stranded conductor, and an inner semi-conductive shielding layer, an insulating layer and an outer semi-conductive shielding layer are simultaneously extruded by three-layer co-extrusion equipment outside the conductor so as to ensure that the insulating property of the cable meets the voltage-resistant grade requirement of 35 kV. And a copper strip shielding layer is wound outside the wire core to protect the conductor from external electromagnetic interference during working, and a water blocking tape is wound to protect the copper strip shielding layer. During cabling, the water-blocking filling strips are used for filling roundness and the water-blocking tape is wrapped tightly, so that water vapor and chemical substances can be effectively prevented from permeating into the inner layer from the end part of the cable, and the performance and the service life of the cable are influenced. The high-density waterproof rubber inner protective layer is extruded outside the cable core, and the high-density waterproof rubber can be used under the conditions of water immersion and larger water pressure for a long time and has particularly good waterproof and corrosion-resistant properties. Because the rubber has poor impact resistance, the cable is prevented from being damaged due to collision in the installation and use processes, a stainless steel strip armor layer is longitudinally wrapped outside the rubber layer, the stainless steel strip is different from the traditional galvanized steel strip and cannot rust in a humid environment and seawater, and the longitudinal wrapping process is adopted, so that substances outside the edge can be completely prevented from permeating into the interior, and the waterproof and corrosion-resistant properties are enhanced. The armor layer is protected by selecting the polyether type polyurethane elastomer with better waterproof performance as a sheath material, and the polyurethane elastomer has the outstanding characteristics of excellent wear resistance, excellent ozone resistance, high hardness, high strength, good elasticity, low temperature resistance, good oil resistance, chemical resistance and environmental resistance, and the hydrolysis stability of polyether ester in a humid environment is far higher than that of polyester. The cable effectively improves the performances of water resistance, wear resistance, corrosion resistance, aging resistance and the like of the product through a multilayer waterproof and corrosion-resistant design, and can fully meet the requirements of use in special areas such as seawater, chemical plants and the like.

Claims

1. The utility model provides a corrosion-resistant waterproof crosslinked power cable of 35kV which characterized in that: the cable comprises a conductor, wherein a semi-conductive inner shielding layer, a cross-linked polyethylene insulating layer, a semi-conductive outer shielding layer, a copper strip shielding layer and a water blocking tape are sequentially coated outside the conductor, a cable core is formed by twisting three conductor bundles, and the water blocking tape, a waterproof rubber inner protecting layer, a stainless steel strip longitudinal-coated armor layer and a polyurethane elastomer sheath are sequentially coated outside the cable core.

2. The corrosion-resistant waterproof crosslinked power cable of claim 1, wherein: the conductor is a copper core soft strand stranded conductor.

3. The corrosion-resistant waterproof crosslinked power cable of claim 1, wherein: and a water-blocking filling strip filling layer is filled on the inner side of the water-blocking tape wrapping layer II.