CN202178082U

CN202178082U - Mineral insulation fireproof flexible cable

Info

Publication number: CN202178082U
Application number: CN2010206506669U
Authority: CN
Inventors: 何俊文
Original assignee: ANHUI CABLE INDUSTRY GROUP Co Ltd
Current assignee: ANHUI CABLE INDUSTRY GROUP Co Ltd
Priority date: 2010-12-09
Filing date: 2010-12-09
Publication date: 2012-03-28
Anticipated expiration: 2020-12-09

Abstract

Disclosed is a mineral insulation fireproof flexible cable and is characterized in that: the main core conductor (1a) and the earth core conductor (1b) are formed by intertwisting multiple strands of annealed copper wires; the main core conductor (1a) and the earth core conductor (1b) are first wrapped by four layers of mica tapes respectively and then longitudinally wrapped by a layer of copper strip and then form a main core insulating layer (2a) and an earth core insulating layer (2b) via continuous seamless welding. The main core conductor and the earth core conductor wrapped with an insulating layer are intertwisted to form the cable core. The cable core is wrapped by two layers of mica tape to form a belting layer (3). The belting layer is longitudinally wrapped by the copper strip and forms an oversheath layer (4) via continuous seamless welding. The oversheath layer is further wrapped by layer of plastic protective layer (5). The mineral insulation fireproof flexible cable is applicable to places where fireproof characteristic is required.

Description

Mineral insulation fire prevention flexible cable

Technical field

The utility model relates to a kind of mineral insulated cable, relates in particular to a kind of mineral insulation fire prevention flexible cable, belongs to technical field of electric wires and cables.

Background technology

At present; No matter be commercial power or household electricity, people also more and more pay attention to the fail safe of electricity consumption, and all kinds of fire-resisting cables begin to be widely used in fields of society; A power utilization system such as skyscraper, subway, airport, also increasingly high to the fire resistance requirement of cable.And that the common fire-resisting cable of general class exists is fire-retardant, fire resistance is low, quality is heavy, can't satisfy shortcomings such as fire resistance rating height, does not meet the specific (special) requirements of above-mentioned occasion.

The utility model content

The utility model is the weak point for avoiding above-mentioned prior art to exist; A kind of have anti-tampering, environmental protection, fire-retardant, fire-resistant, safety are provided, have light in structure, long service life simultaneously, can guarantee the mineral insulation fire prevention flexible cable of advantages such as personal safety.

The utility model mineral insulation fire prevention flexible cable; Its design feature is; Master core conductor and ground wire core conductor form by the multiply annealed copper wire is stranded; Vertical again bag one deck can weld copper strips and form master core insulating barrier and ground wire core insulation layer behind wrapped respectively four stratus master tapes on described master core conductor and the ground wire core conductor, and the master core conductor and the stranded stranding of ground wire core conductor that are coated with insulating barrier constitute cable core; Outside described cable core, form belting layer through wrapped two-layer mica tape, constitute external sheath layer in the vertical bag of belting layer external application copper strips back through the continuous seamless welding; Outside external sheath layer, extrude one deck plastic protective layer again.

Compared with present technology, the beneficial effect of the utility model is embodied in:

1, the utility model core conductor adopts the stranded formation of multiply annealed copper wire; Make the cable softness good; The copper strips that outside core and cable core, is surrounded with no seam welding respectively is as sheath; Not only improved performances such as whole cable fire prevention, waterproof, anti-interference, anti-mechanical damage, and it is inner to prevent that imflammable gas, oily vapour, flame from getting into cable, also is of value to the production electric cable with large cross-section simultaneously.

2, the utility model cable adopts copper strips insulation and sheath, guarantees the cable loop guaranteed cost, and cable does not puncture more than in working temperature reaches 1000 ℃ environment, using 90min.

3, the utility model cable jacket has increased low smoke and zero halogen cross-linked polyolefin material outward and has done the cable external protection, has prolonged the useful life of cable.

Description of drawings

Fig. 1 is the utility model structural representation.

Serve as theme core conductor, 1b of label among the figure: 1a is that serve as theme core insulation layer, 2b of ground wire core conductor, 2a is that ground wire core insulation layer, 3 is protective layer for external sheath layer, 5 for belting layer, 4.

Below, the utility model is described further in conjunction with accompanying drawing through embodiment.

Embodiment

Referring to Fig. 1; In the present embodiment; Master core conductor 1a and ground wire core conductor 1b form by the multiply annealed copper wire is stranded, are indulging the copper-clad band and are forming master core insulating barrier 2a and ground wire core insulation layer 2b through seamless welding manner behind the wrapped four stratus master tapes respectively on master core conductor 1a and the ground wire core conductor 1b; The master core conductor 1a and the ground wire core conductor 1b that are coated with insulating barrier twist together stranding formation cable core; Outside cable core, wrapped two stratus master tapes constitute belting layer 3, and vertical copper-clad band forms external sheath layer 4 through seamless welding manner outside belting layer, on oversheath, add one deck plastic sheath and form protective layer 5.

Claims

1. mineral insulation fire prevention flexible cable; It is characterized in that; Master core conductor (1a) and ground wire core conductor (1b) form by the multiply annealed copper wire is stranded; Upward indulge bag one deck copper strips again and pass through continuous seamless welding formation master core insulating barrier (2a) and ground wire core insulation layer (2b) behind the wrapped four stratus master tapes respectively at described master core conductor (1a) and ground wire core conductor (1b), the master core conductor and the stranded stranding of ground wire core conductor that are coated with insulating barrier constitute cable core; Outside described cable core, form belting layer (3) through wrapped two-layer mica tape, constitute external sheath layer (4) at the vertical bag of belting layer external application copper strips and through the continuous seamless welding; Outside external sheath layer, extrude one deck plastic protective layer (5) again.