CN208507257U

CN208507257U - A kind of twisted polyethylene cable

Info

Publication number: CN208507257U
Application number: CN201820544722.7U
Authority: CN
Inventors: 张涛; 段斌; 张作兵; 谢育榜
Original assignee: CHANGSHA HANHE CABLE Co Ltd
Current assignee: CHANGSHA HANHE CABLE Co Ltd
Priority date: 2018-04-17
Filing date: 2018-04-17
Publication date: 2019-02-15
Anticipated expiration: 2028-04-17

Abstract

The utility model discloses a kind of twisted polyethylene cable, including cable core, and the gap of cable core, which is equipped with, fills out core, wrapped cable outer layer outside cable core；The cable core includes four conductor inner cores, and the centre of four conductor inner cores is nonmetallic strengthening core；Each conductor inner core includes the spaced apart conductors such as three groups, is provided with double-sided insulation waterstop between adjacent equal spaced apart conductors；Conductor inner core successively includes flame retardant coating, insulating layer, conductor belting layer and shielded layer from the inside to the outside；The cable outer layer successively includes that semiconductor waterstop, liner layer, armor, semiconductive block water buffer strip and outer jacket from the inside to the outside；The construction of cable disclosed by the utility model has preferable fire resistance and waterproofness, conductor core designs are three spaced apart conductors, double-sided insulation waterstop is placed between adjacent spaced apart conductor, and fireproof mica layer, insulating layer, conductor belting layer and shielded layer are set gradually outside conductor inner core, it ensure that the safe and reliable of conductor inner core, there are the performances such as firm in structure, good flame resistance.

Description

A kind of twisted polyethylene cable

Technical field

The utility model relates to power cable fields, are specifically related to a kind of twisted polyethylene cable.

Background technique

Power cable with cross-linked polyethylene insulation is due to its good electric property, transmission capacity is big, can high drop or vertical run, Installation and maintenance aspect the advantages that, such as in the high pressures such as ship, tunnel and extra-high-tension cable field it is very widely used.Crosslinking PE cable is usually made of conductive core, insulating layer and filled layer etc., is answered extensively with good electric property With.However, the operating temperature of the twisted polyethylene cable of the prior art is lower, its insulating properties is easy to cause to drop under high temperature environment It is low, fire resistance is poor, is difficult to keep the normal use of each emergency system whithin a period of time in the case where encountering fire condition, influence using Safety, meanwhile, the waterproofness of twisted polyethylene cable is also poor.

Utility model content

The utility model in view of the above defects of the prior art, provides a kind of twisted polyethylene cable, have compared with Good fire resistance and waterproofness uses for the emergency power supply in special circumstances such as fire extinguishing, alarm, communication.

A kind of twisted polyethylene cable, which is characterized in that including cable core, the gap of cable core, which is equipped with, fills out core, cable core it is outer around Packet cable outer layer；The cable core includes four conductor inner cores, and the centre of four conductor inner cores is nonmetallic strengthening core；Each conductor Inner core includes the spaced apart conductors such as three groups, is provided with double-sided insulation waterstop between adjacent equal spaced apart conductors, insulate waterstop With a thickness of 0.15mm；Wrapped flame retardant coating outside conductor inner core, flame retardant coating are formed by synthetic mica tape GSG is wrapped, are had excellent High temperature resistant, anti-flammability, fire resistance, flame retardant coating are insulating layer outside, and it is to lead outside insulating layer that insulating layer, which is that crosslinked polyethylene is wrapped, which to be formed, Body belting layer, conductor belting layer are blocked water binding strap using semiconductive, with a thickness of 3mm, by the setting for the binding strap that blocks water, super Under high voltage use condition, water preventing ability and insulating properties are more preferable, meet the transmission requirement of supertension line, are screen outside conductor belting layer Cover layer, the shielded layer includes dredging around shielding layer of copper wires and dredging around copper strip shielding layer from the inside to the outside, reduces external electric wave to electricity The interference of cable；

The cable outer layer successively includes that semiconductor waterstop, liner layer, armor, semiconductive block water buffering from the inside to the outside Band and outer jacket, the semiconductor waterstop are made of carboxymethyl cellulose, carbon black and nonwoven fabric belts, and carbon black uniformly penetrates into carboxylic first It in base cellulose and is coated on non-woven fabrics, the liner layer uses fire-retardant glass fiber belt, and the armor uses finer wire Armor effectively keeps out the external mechanical failure to cable, improves the service life of cable, and the outer jacket is crosslinked polyethylene Sheath；

Further, the conductor inner core is formed by the identical soft tin plating well-regulated process of round copper wire of several diameters, The ethenyl adhesive that the surface of round copper wire is also coated with a thickness of 0.1mm.

Further, the core of filling out is using electro-insulating rubber or non-woven fabrics, has the characteristics that waterproof, fire-retardant, improves cable Mechanical protection performance.

Compared with prior art, it the advantages of the utility model and has the active effect that

The utility model proposes twisted polyethylene cable there is preferable fire resistance and waterproofness, conductor inner core passes through The nonmetallic strengthening core of special shape supports, and strengthens the structural strength and reliability of cable；Conductor core designs are three separations Conductor places double-sided insulation waterstop between adjacent spaced apart conductor, and sets gradually outside conductor inner core fireproof mica layer, absolutely Edge layer, conductor belting layer and shielded layer have good high temperature resistant, fire-retardant water preventing ability and insulating properties, ensure that conductor inner core Securely and reliably, cable outer layer uses cross-linking polyethylene materials insulating protection, improves its mechanical protection performance, heat resistance etc., has There are the excellent comprehensive performances such as firm in structure, good flame resistance, cable roundness reaches 98% or more, can effectively improve service life.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of cable described in the utility model embodiment；

Fig. 2 is the structural schematic diagram of conductor inner core in Fig. 1.

Specific embodiment

In order to which the above objects, features, and advantages of the utility model are more clearly understood, with reference to the accompanying drawing and Embodiment is described further the utility model.It should be noted that in the absence of conflict, embodiments herein and Feature in embodiment can be combined with each other.

Embodiment, a kind of twisted polyethylene cable include cable core 1 with reference to Fig. 1, and the gap of cable core, which is equipped with, fills out core 2, cable core Wrapped cable outer layer outside 1；The cable core 1 includes four conductor inner cores, naturally it is also possible to and it is 2 or 3, four conductor inner cores Centre is nonmetallic strengthening core 3；Each conductor inner core 1 includes the spaced apart conductors such as three groups, as shown in Fig. 2, separating in adjacent wait Be provided with double-sided insulation waterstop 11 between conductor, insulation waterstop 11 with a thickness of 0.15mm；Wrapped fire resisting outside conductor inner core Layer 12, flame retardant coating 12 is formed by synthetic mica tape GSG is wrapped, has excellent high temperature resistant, anti-flammability, fire resistance, flame retardant coating 12 It is outside insulating layer 13, it is conductor belting layer 14, conductor belting layer outside insulating layer 13 that insulating layer 13, which is that crosslinked polyethylene is wrapped, which to be formed, 14 are blocked water binding strap using semiconductives, with a thickness of 3mm, by the setting for the binding strap that blocks water, and under extra-high voltage use condition, Water preventing ability and insulating properties are more preferable, meet the transmission requirement of supertension line, are shielded layer 15, the shielding outside conductor belting layer 14 Layer 15 includes dredging around shielding layer of copper wires and dredge the interference for reducing external electric wave around copper strip shielding layer to cable from the inside to the outside；Institute State cable outer layer successively includes that semiconductor waterstop 4, liner layer 5, armor 6, semiconductive block water buffer strip 7 and outer from the inside to the outside Sheath 8, the semiconductor waterstop 4 are made of carboxymethyl cellulose, carbon black and nonwoven fabric belts, and carbon black uniformly penetrates into carboxymethyl fibre It in dimension element and is coated on non-woven fabrics, the liner layer 5 uses fire-retardant glass fiber belt, and the armor 6 uses finer wire armour Layer is filled, the external mechanical failure to cable is effectively kept out, improves the service life of cable, the outer jacket 8 is crosslinked polyethylene Sheath.

Big section spaced apart conductor stock block rounding property control technology, institute can be used in the separation of the conductor inner core 1 of the utility model It states conductor inner core to be formed by the identical soft tin plating well-regulated process of round copper wire of several diameters, the surface of round copper wire is also coated with thickness Degree be 0.1mm ethenyl adhesive, in addition, in the present embodiment fill out core 2 use electro-insulating rubber or non-woven fabrics, have waterproof, The features such as fire-retardant, improves the mechanical protection performance of cable.

The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent The equivalent embodiment of variation is applied to other fields, but all without departing from the content of the technical scheme of the utility model, according to this reality With novel technical spirit any simple modification, equivalent variations and remodeling to the above embodiments, it is practical new to still fall within this The protection scope of type technical solution.

Claims

1. a kind of twisted polyethylene cable, which is characterized in that including cable core, the gap of cable core, which is equipped with, fills out core, wrapped outside cable core Cable outer layer；The cable core includes four conductor inner cores, and the centre of four conductor inner cores is nonmetallic strengthening core；

Each conductor inner core includes the spaced apart conductors such as three groups, is provided with double-sided insulation between adjacent equal spaced apart conductors and blocks water Band, the waterstop that insulate with a thickness of 0.15mm；Wrapped flame retardant coating outside conductor inner core, flame retardant coating it is wrapped by synthetic mica tape GSG and At flame retardant coating is insulating layer outside, and it is conductor belting layer, conductor band outside insulating layer that insulating layer, which is that crosslinked polyethylene is wrapped, which to be formed, Layer is blocked water binding strap using semiconductive, is shielded layer outside conductor belting layer with a thickness of 3mm, the shielded layer include by it is interior extremely Outer dredging around shielding layer of copper wires and dredging around copper strip shielding layer；

The cable outer layer successively include from the inside to the outside semiconductor waterstop, liner layer, armor, semiconductive block water buffer strip and Outer jacket, the semiconductor waterstop are made of carboxymethyl cellulose, carbon black and nonwoven fabric belts, and the liner layer uses fire-retardant glass Glass fiber band, the armor use LWA light wire armoured layer, and the outer jacket is crosslinked polyethylene sheath.

2. twisted polyethylene cable according to claim 1, it is characterised in that: the conductor inner core is by several diameter phases The same soft tin plating well-regulated process of round copper wire forms, the ethenyl adhesive that the surface of round copper wire is also coated with a thickness of 0.1mm.

3. twisted polyethylene cable according to claim 2, it is characterised in that: the core of filling out is using electro-insulating rubber or nonwoven Cloth.