CN202711759U

CN202711759U - Armored cable structure

Info

Publication number: CN202711759U
Application number: CN 201220408947
Authority: CN
Inventors: 丁小琴; 罗继伟
Original assignee: JIANGXI NANLAN GROUP CO Ltd
Current assignee: JIANGXI NANLAN GROUP CO Ltd
Priority date: 2012-08-17
Filing date: 2012-08-17
Publication date: 2013-01-30
Anticipated expiration: 2022-08-17

Abstract

The utility model discloses an armored cable structure. A crosslinked polyethylene insulating layer and a wrapping tape are successively wrapped around a copper conductor from inside to outside, and an armored layer is wrapped around the wrapping tape. According to the utility model, the working temperature of a cable is 90 DEG C; the special armored structure in which buckling and overlapping are tight, aluminum alloy belts and arc-shaped curved surface are provided, and linkage is flexible is employed, so that external flame can be effectively prevented from entering the cable easily, and the cable can easily reach the grade of halogen-free low-smoke flame-retardation type A without dependence on complex structure or special flame-retardation material; and the cable can bear radial pressure and axial tension, and the bending performance of the cable is good, so that the cable can be directly buried in walls or concrete of buildings without damage.

Description

A kind of armoured cable structure

Technical field

The utility model relates to a kind of armoured cable structure.

Technical background

At present, common construction and decoration mostly is copper core PVC-insulated cable with electric wire, namely in the form of single core or multicore insulated wire outer cladding pvc sheath, this cable working temperature is 70 ℃, and can only use under general common environmental condition, its scope of application and serviceability all have been subject to impact.

The utility model content

The purpose of this utility model is to provide a kind of new construction of cable, make the working temperature of common building finishing cable rise to 90 ℃, insulated wire cores is not vulnerable to the infringement of external force or external environment simultaneously, has enlarged the cable scope of application, and serviceability also is improved.

For achieving the above object, the technical solution of the utility model is it is characterized in that: a kind of armoured cable, copper conductor from interior to outside be coated with successively crosslinked polyetylene insulated layer and band, band is coated with armour.

Described armour is coated with oversheath.

The transverse shape of described armour is serpentine, and the knee fastens overlap joint mutually.

The utility model has the advantages that: (1) is owing to adopting crosslinked polyetylene insulated layer, make the working temperature of cable can reach 90 ℃, fasten the closely arc-shaped curved surface interlocking flexible armoring structure of aluminum alloy strip, this kind cable can effectively stop extraneous flame to be not easy to intrude into cable inside, so need not rely on the structure of complexity and the grade that special fire proofing just can reach the LSOH anti-flaming category-A very like a cork.(2) aluminum alloy strip that adopts because of armour is nonmagnetic substance, and single-core cable does not exist vortex phenomenon and magnetic loss, and anti-outside electromagnetic interference when producing leakage current, can be guaranteed the person and device security better better.(3) because armour adopts the special construction of the arc-shaped curved surface interlocking flexible armoring that fastens the tight aluminum alloy strip of overlap joint, make cable can bear radial pressure and axial tension, simultaneously the cable bend performance is good, so but such cable direct-burried in construction wall or concrete and can be not damaged.

Description of drawings

Fig. 1 is structural shape of the present utility model.

Fig. 2 is that the A of Fig. 1 is to structural representation.

Among the figure: 1-copper conductor, 2-crosslinked polyetylene insulated layer, 3-band, 4-armour, 5-oversheath.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples, referring to Fig. 1 and Fig. 2, a kind of armoured cable, copper conductor 1 from interior to outside be coated with successively insulating barrier 2 and band 3, it is characterized in that: band 3 is coated with armour 4.

Described armour 4 is coated with oversheath 5.

The cross sectional shape of described armour is serpentine, and the knee fastens overlap joint mutually.

Embodiment:A kind of way of recommendation of the present utility model, referring to Fig. 1～2, at first will be coated with thermoset crosslink polyethylene insulating barrier 2 by many copper conductors 1 twists together and forms the thermoset crosslink polyethylene insulated wire, also can adopt as required single copper conductor 1 to be coated with the thermoset crosslink polyethylene insulated wire of thermoset crosslink polyethylene insulating barrier 2 structures, the specification of many prismatic copper core thermoset crosslink polyethylene insulated wires: 2 * 1.5～2 * 35mm ²Or 3 * 1.5～3 * 35 ... 5 * 1.5～5 * 35mm ²The specification of the copper conductor 1 thermoset crosslink polyethylene insulated wire of single or unequal section is such as 1 * 25mm ²Or 3 * 2.5+1 * 1.5 mm ²Deng.Can not fill when the multicore insulated wire is stranded, but should be outside cable core wrapped one deck and 90 ℃ of suitable bands 3 of cable operating temperature.Band 3 adopts non-absorbent material embossing polyester band.

The utility model is that the thermoset crosslink polyethylene insulated wire with single or many copper conductors 1 is coated in the aluminum alloy strip arc-shaped curved surface interlocking flexible armoring layer 4.Armour 4 materials are aluminum alloy strip, aluminum alloy strip produces predeformation by the special tooling on the arc-shaped curved surface lock armo machine time, the shape in cross section curves serpentine after the distortion, the aluminum alloy strip of distortion is wrapped along vertically rotating around cable core of cable, and the knee fastens overlap joint mutually continuously from being locked into one, and cable core is coated closely.Armour 4 thickness of strip are selected according to conductor assembly outer diameter, and selection principle is: during cable core diameter D≤20mm, aluminum alloy strip thickness is 0.5mm, cable core diameter D〉during 20mm, aluminum alloy strip thickness is 0.65mm.

Requirement according to use occasion, armour 4 is outer can to extrude oversheath 5, oversheath 5 adopts polyvinyl chloride or polythene material, it also can be the material of flame retardant type or halogen-free low-smoke, but before extruding the material of halogen-free low-smoke, should be at armour 4 outer wrapped one decks and 90 ℃ of suitable bands 3 of cable operating temperature.If the cable laying environment is in preferably occasion of the condition such as drying (laying as built on stilts) for a long time, also can save oversheath 5, directly the outermost layer of arc-shaped curved surface interlocking flexible armoring layer 4 as cable.

Claims

1. armoured cable is characterized in that: copper conductor from interior to outside be coated with successively crosslinked polyetylene insulated layer and band, band is coated with armour.

2. armoured cable according to claim 1, it is characterized in that: described armour is coated with oversheath.

3. armoured cable according to claim 1, it is characterized in that: the cross sectional shape of described armour is serpentine, and the knee fastens overlap joint mutually.