CN2393200Y

CN2393200Y - Improved insulated wire

Info

Publication number: CN2393200Y
Application number: CN 99229331
Authority: CN
Inventors: 杜南平; 周晓勤
Original assignee: New Far East Cable Co Ltd
Current assignee: New Far East Cable Co Ltd
Priority date: 1999-08-30
Filing date: 1999-08-30
Publication date: 2000-08-23
Anticipated expiration: 2009-08-30

Abstract

The utility model relates to an improved insulating electric wire, which particularly relates to an insulating layer of the electric wire. The improved insulating electric wire is characterized in that the external side of the insulating layer of the electric wire is increased with a thin layer of nylon bag sleeve, simultaneously, thickness of the insulating layer can be thinned by 40% to 50%; cost can be reduced by 10%, and compared with the original insulating electric wire of polyvinyl chloride and protective sleeve wire, mechanical property and physical property of the improved insulating electric wire can have obvious increase. The utility model is particularly suitable for the civil or the technical electric wire and cable with rated voltage of 450/750V and less than 450/750V.

Description

A kind of improved civilian insulated electric conductor

Utility model is about the improvement to insulated electric conductor, especially about the improvement to electric wire insulation layer.

Civilian or industrially fixedly lay and connect the conduction power supply, adopt thermoplastics (normally polyvinyl chloride) to make insulating barrier and oversheath usually with copper core or aluminium core insulation or protective case wire.For guaranteeing that enough insulation resistances are arranged, and requirements such as mechanical strength, resistance to wear, insulating barrier is generally thicker.Be example with 450/750V copper core protective case wire for example: the conductor nominal cross is 1.5mm ²The time, thickness of insulating layer is 0.7mm, and reaches 25mm at the nominal cross-sectional area of conductor ²The time, thickness of insulating layer reaches 1.2mm, and the conductor nominal cross reaches 400mm ²The time, thickness of insulating layer reaches 8.6mm.The increase of thickness of insulating layer has not only increased the manufacturing cost of lead, has also increased wiring cost during owing to lead rugosity Datong District.Secondly, polyvinyl chloride insulating barrier resistance to wear, chemical resistance and temperature tolerance are all relatively poor, and electric wire poling sliding is also good inadequately, and wiring threading inconvenience is scratched insulating barrier easily, and it is just more difficult especially to meet bend corner threading.

The purpose of utility model is to overcome the deficiency of prior art, provides a kind of improved energy remarkable attenuate thickness of insulating layer, reduces manufacturing cost, and the mechanical strength height, the civilian insulated electric conductor that resistance to wear, temperature tolerance and chemical resistance are good.

The utility model purpose realizes that the major technique measure is to take attenuate polyvinyl chloride thickness of insulating layer, increases skim nylon jacket outside insulating barrier.Specifically, the civilian insulated electric conductor of utility model comprises metallic conductance body and outsourcing polyvinyl chloride insulating barrier, it is characterized in that outer the increasing of said insulating barrier has skim nylon jacket.The utility model electric wire has thin layer nylon jacket owing to increasing outside insulating barrier, can reduce the wire insulation layer thickness by a relatively large margin again guaranteeing have under enough insulation property, and insulating barrier attenuate amount reaches 40-60%, has reduced manufacturing and threading cost; And the chemical resistance of electric wire, temperature tolerance, resistance to wear, mechanical strength and surface lubrication are improved.The utility model design also can be used for the insulating sleeve line, and for the insulating sleeve line, thin layer nylon jacket is alternate between insulating barrier and oversheath.

The utility model insulating barrier has no special requirements, and can adopt general thermoplastics of insulated electric conductor such as polyvinyl chloride to get final product, and can be the polyvinyl chloride mixture, also can be to contain polyvinyl chloride and certain polyvinyl chloride mixture of polymers.The nylon jacket that is increased is meant with the polyamide to be main component and the material that cooperates other additive to make.

Description below in conjunction with several embodiment further specifies utility model.

Fig. 1 is a utility model insulated electric conductor structural representation.

Fig. 2 is the single core jacket insulation of a utility model wire structure schematic diagram.

Fig. 3 is a utility model twin-core jacket insulation wire structure schematic diagram.

Embodiment 1: referring to Fig. 1, be 2.5mm with the conductor nominal cross ²Insulated electric conductor be example, the thickness of the polyvinyl chloride insulation layer 2 that copper conductor 1 is outer is 0.4mm, is extruded with the nylon jacket 3 of 0.1mm outside insulating barrier.

Embodiment 2: referring to Fig. 2, be 120mm with the conductor nominal cross ²Single core insulation RVV be example, the thickness of the polyvinyl chloride insulation layer 2 that copper conductor 1 is outer is 1.4mm, and the nylon jacket 3 of 0.18mm is arranged outside insulating barrier, the nylon jacket has oversheath 4 outward.

Embodiment 3: referring to Fig. 3, be 2*10mm with the conductor nominal cross ²Twin-core insulating sleeve lenticular wire be example, the thickness of the polyvinyl chloride insulation layer 2 that copper conductor 1 is outer is 0.7mm, it is the nylon jacket 3 of 0.13mm that thickness is arranged outside insulating barrier, the nylon jacket has oversheath 4 outward.

The utility model insulated electric conductor, owing to outside insulating barrier, increased one deck nylon jacket, the mechanical performance of electric wire is obviously improved, intensity, wear-resisting, corrosion resistance, temperature tolerance (can reach 120 ℃), all more common BLV of anti-ambient temperature are excellent, and current carrying capacity of conductor can improve a grade; And the thickness of insulating layer of electric wire only is original 50-60%, and as 450/750V copper core electric wire, the conductor nominal cross is at 1.5-400mm ², polyvinyl chloride insulating barrier average thickness is 0.35-1.8mm, and nylon jacket average thickness is 0.1-0.23mm, and cost on average reduces about 10%, also can reduce by the dress expense in addition.The lubrification of making outer jacket conductive line surfaces with nylon is good, and favourable threading wiring can reduce the broken skin spoilage of threading.Utility model is particularly useful for rated voltage 450/750V and following civilian or industrial electric wire and cable.

For convenience of description, the said lead of utility model, electric wire are synonym, include electric wire (RVV) and cable.

Claims

1, a kind of improved civilian insulated electric conductor comprises metallic conductance body and outsourcing polyvinyl chloride insulating barrier, it is characterized in that outer the increasing of said insulating barrier has skim nylon jacket.

2,, it is characterized in that said nylon jacket also has the polyvinyl chloride sheath outward according to the described civilian insulated electric conductor of claim 1.

3,, it is characterized in that said nylon jacket thickness is at 0.1-0.3mm according to claim 1 or 2 described civilian insulated electric conductors.

4,, it is characterized in that said nylon jacket thickness is at 0.1-0.2mm according to claim 1 or 2 described civilian insulated electric conductors.

5, according to claim 1 or 2 described civilian insulated electric conductors, it is characterized in that said thickness of insulating layer is at 0.35-1.8mm.