CN210778011U

CN210778011U - Water-blocking overhead insulated cable

Info

Publication number: CN210778011U
Application number: CN201921918202.9U
Authority: CN
Inventors: 储锋; 储优良; 钱晓峰; 储亚新; 薛敏娟
Original assignee: Jiangsu Wei Xiang Technology Co ltd
Current assignee: Jiangsu Wei Xiang Technology Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-06-16
Anticipated expiration: 2029-11-08

Abstract

The utility model relates to the technical field of cables, specific aerial insulated cable blocks water that says so, the cable core comprises a steel core and an aluminum core, the aluminum core transposition is connected around the steel core outside, the cable core outside is equipped with the conductor shielding layer, the conductor shielding layer outside is equipped with the insulating layer, the insulating layer outside is equipped with the insulation shielding layer, the insulation shielding layer outside is equipped with the band layer that blocks water. The arrangement of the conductor shielding layer and the insulation shielding layer effectively avoids the occurrence of partial discharge between the conductor and the outer insulation layer and between the insulation layer and the outer structure, thereby improving the safety of the use of the cable; through the arrangement of the water blocking tape layer, the moisture-proof layer and the foaming filling strips, the water blocking tape layer and the foaming filling strips expand when meeting water, can absorb moisture and prevent the moisture from permeating, play a role in blocking water and prevent the water from entering the cable; through the setting on nylon layer, improve the tensile strength of cable, can prevent that the termite from corroding simultaneously.

Description

Water-blocking overhead insulated cable

Technical Field

The utility model relates to the technical field of cables, specifically be an overhead insulated cable blocks water.

Background

The overhead insulated cable is an overhead conductor provided with an insulating layer and a protective sheath, and is a new power transmission mode between the overhead conductor and an underground cable. The overhead insulated cable has the main characteristics of high power supply reliability, good power supply safety, convenience in erection and maintenance, reasonable economy and the like, and is widely applied to domestic and foreign power transmission projects. The overhead insulated cable structure on general market is too simple, can not play fine dampproofing effect of blocking water, and when the cable epidermis damaged, outside moisture can stretch into inside the cable, causes the damage to the cable, influences the normal use of cable. For this reason, we have proposed a water-blocking overhead insulated cable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an overhead insulated cable blocks water to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an aerial insulated cable blocks water, includes the cable core, the cable core includes steel core and aluminium core, aluminium core transposition is connected around the steel core outside, the cable core outside is equipped with the conductor shielding layer, the conductor shielding layer outside is equipped with the insulating layer, the insulating layer outside is equipped with the insulation shielding layer, the insulation shielding layer outside is equipped with the band layer that blocks water, the band layer outside that blocks water is equipped with interior sheath, the interior sheath outside is equipped with the dampproof course, first through-hole has evenly been seted up in the dampproof course, the intussuseption of first through-hole is filled with the foaming filler strip, the dampproof course outside is equipped with the nylon layer, the nylon layer outside is equipped with fire-retardant layer, the second through-hole has evenly been seted up in the fire-retardant layer, the second through.

As a further optimization of the technical scheme, the insulating layer is a crosslinked polyethylene insulating layer.

As a further optimization of the technical scheme, the conductor shielding layer and the insulation shielding layer are both tin-plated copper mesh shielding layers.

As a further optimization of the technical scheme, the nylon layer is a net structure formed by weaving nylon wires.

As a further optimization of the technical scheme, the inner protection layer is a low-phenyl silicone rubber protective layer, and the outer protection layer is a crosslinked polyethylene protective layer.

Compared with the prior art, the beneficial effects of the utility model are that: the arrangement of the conductor shielding layer and the insulation shielding layer effectively avoids the occurrence of partial discharge between the conductor and the outer insulation layer and between the insulation layer and the outer structure, thereby improving the safety of the use of the cable; through the arrangement of the water blocking tape layer, the moisture-proof layer and the foaming filling strips, the water blocking tape layer and the foaming filling strips expand when meeting water, can absorb moisture and prevent the moisture from permeating, play a role in blocking water and prevent the water from entering the cable; due to the arrangement of the nylon layer, the tensile strength of the cable is improved, and meanwhile, the corrosion of termites can be prevented; through the setting of fire-retardant layer and fire-retardant filling rope, play fire-retardant effect, energy-concerving and environment-protective.

Drawings

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

In the figure: 1 steel core, 2 aluminium cores, 3 conductor shielding layers, 4 insulating layers, 5 insulating shielding layers, 6 water-blocking tape layers, 7 inner protective layers, 8 moisture-proof layers, 9 foaming filling strips, 10 nylon layers, 11 flame-retardant layers, 12 flame-retardant filling ropes and 13 outer protective layers.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a water-blocking aerial insulated cable, includes the cable core, and the cable core includes steel core 1 and

aluminium core

2, and 2 transposition of aluminium core are connected around 1 outside of steel core, and steel core 1 increases the structural strength of cable, and tensile strength is big.

The cable core outside is equipped with conductor shielding layer 3, and the conductor shielding layer 3 outside is equipped with insulating layer 4, and the insulating layer 4 outside is equipped with insulating shield 5, and insulating layer 4 is the crosslinked polyethylene insulating layer, and conductor shielding layer 3 and insulating shield 5 are the tinned copper net shielding layer, and conductor shielding layer 3 can avoid taking place partial discharge between conductor and the insulating layer 4 in the outside, and insulating shield 5 can avoid taking place partial discharge between the structure in insulating layer 4 and the outside.

Insulating shielding layer 5 outside is equipped with water-blocking tape layer 6, water-blocking tape layer 6 prevents that water from getting into inside the cable, cause the damage to the cable, buffer action has simultaneously, water-blocking tape layer 6 outside is equipped with interior sheath 7, interior sheath 7 is low phenyl silicon rubber sheath, interior sheath 7 outside is equipped with dampproof course 8, first through-hole has evenly been seted up in the dampproof course 8, the intussuseption of first through-hole is filled with foaming filler strip 9 foaming filler strip and meets water expansion, absorb moisture, prevent moisture infiltration, play the effect of blocking water equally.

The 8 outsides of dampproof course are equipped with nylon layer 10, and nylon layer 10 weaves the network structure who forms for the nylon yarn, and nylon layer 10 toughness is great, improves the tensile strength of cable, can prevent that the termite from corroding simultaneously.

The nylon layer 10 outside is equipped with fire-retardant layer 11, and fire-retardant layer 11 adopts fire-retardant material, evenly seted up the second through-hole in the fire-retardant layer 11, the second through-hole intussuseption is filled with fire-retardant filling rope 12, plays fire-retardant effect, and the 11 outsides of fire-retardant layer are equipped with outer jacket 13, and outer jacket 13 is the crosslinked polyethylene sheath, protects the cable.

Specifically, when the cable is used, the arrangement of the conductor shielding layer 3 and the insulation shielding layer 5 effectively avoids partial discharge between the conductor and the outer insulation layer 4 and between the insulation layer 4 and the outer structure, so that the use safety of the cable is improved; through the arrangement of the water-blocking tape layer 6, the moisture-proof layer 8 and the foaming filling strips 9, the water-blocking tape layer 6 and the foaming filling strips 9 expand when meeting water, can absorb moisture and prevent the moisture from permeating, play a role in blocking water and prevent the water from entering the cable; due to the arrangement of the nylon layer 10, the tensile strength of the cable is improved, and meanwhile, the corrosion of termites can be prevented; through the setting of fire-retardant layer 11 and fire-retardant filling rope 12, play fire-retardant effect, energy-concerving and environment-protective.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a built on stilts insulated cable blocks water, includes the cable core, its characterized in that: the cable core comprises a steel core (1) and an aluminum core (2), the aluminum core (2) is connected around the outer side of the steel core (1) in a twisted manner, a conductor shielding layer (3) is arranged on the outer side of the cable core, an insulating layer (4) is arranged on the outer side of the conductor shielding layer (3), an insulating shielding layer (5) is arranged on the outer side of the insulating layer (4), a water-blocking tape layer (6) is arranged on the outer side of the insulating shielding layer (5), an inner protective layer (7) is arranged on the outer side of the water-blocking tape layer (6), a damp-proof layer (8) is arranged on the outer side of the inner protective layer (7), first through holes are uniformly formed in the damp-proof layer (8), foaming filling strips (9) are filled in the first through holes, a nylon layer (10) is arranged on the outer side of the damp-proof layer (8), a flame-retardant layer (11) is arranged on the outer side of, an outer protective layer (13) is arranged on the outer side of the flame-retardant layer (11).

2. A water-blocking overhead insulated cable according to claim 1, characterized in that: the insulating layer (4) is a cross-linked polyethylene insulating layer.

3. A water-blocking overhead insulated cable according to claim 1, characterized in that: the conductor shielding layer (3) and the insulation shielding layer (5) are tin-plated copper mesh shielding layers.

4. A water-blocking overhead insulated cable according to claim 1, characterized in that: the nylon layer (10) is a net structure formed by weaving nylon wires.

5. A water-blocking overhead insulated cable according to claim 1, characterized in that: the inner protection layer (7) is a low-phenyl silicone rubber protective layer, and the outer protection layer (13) is a cross-linked polyethylene protective layer.