CN203260361U

CN203260361U - PVC insulation and sheath inflaming-retarding fireproof power cable

Info

Publication number: CN203260361U
Application number: CN201320051553.0U
Authority: CN
Inventors: 巫传安; 时晓玲
Original assignee: Anhui Xinke Cable Group Co Ltd
Current assignee: Anhui Xinke Cable Group Co Ltd
Priority date: 2013-01-30
Filing date: 2013-01-30
Publication date: 2013-10-30
Anticipated expiration: 2023-01-30

Abstract

The utility model is a flame-retardant and fire-resistant power cable with polyvinyl chloride insulation and sheath, which includes several cable cores. The vinyl chloride insulating layer is provided with a middle refractory layer outside the PVC insulating layer, an inner fire-resistant layer is arranged outside the middle fire-resistant layer, an outer fire-resistant layer is arranged outside the inner fire-resistant layer, and an outer fire-resistant layer is arranged outside the outer fire-resistant layer. An outer flame retardant layer is provided, an armor layer is arranged outside the outer flame retardant layer, a polyvinyl chloride sheath layer is arranged outside the armor layer, the cable core includes a conductor, and an inner insulating layer is arranged outside the conductor. A shielding layer is arranged outside the inner insulating layer, a protective layer is arranged outside the shielding layer, and an inner refractory layer is arranged outside the protective layer. The utility model has the advantages of simple structure, good strength, convenient manufacture, high temperature resistance, excellent flame retardancy, excellent anti-aging performance and long service life.

Description

A kind of polyvinyl chloride insulation and shield sleeve flame, fireproof power cable

Technical field

The utility model relates to a kind of power cable, specifically a kind of polyvinyl chloride insulation and shield sleeve flame, fireproof power cable.

Background technology

Power cable is for transmission and distributes the electric equipment of electric energy, and in power circuit, the shared proportion of cable increases gradually, and the Main Function of power cable is transmission and distribute high-power power in the basic routing line in electric power system.There is the poor and incendive problem of structural stability in existing common cable, therefore the lsafety level of electric wiring and the fire-retardant problem of cable more and more cause people's concern, the fire resistance of simultaneously present cable is relatively poor, in case breaking out of fire, particularly intensive some the important occasions such as market, skyscraper, subway and industrial and mining enterprises of personnel can cause damage to people's lives and properties, and the hydracid corrosive gas that produces of burning cable can harmful to human and the illumination of rescue aid caused certain infringement.

Summary of the invention

In order to address the above problem, the utility model provide a kind of fire-resistant effective, insulating reliability large, the polyvinyl chloride insulation of good flame retardation effect and shield sleeve flame, fireproof power cable.

In order to achieve the above object, the utility model is achieved through the following technical solutions:

The utility model is a kind of polyvinyl chloride insulation and shield sleeve flame, fireproof power cable, comprise several cable cores, tie up stranded rear the twining by belting layer of several cable cores, arranged outside at belting layer has the polyvinyl chloride insulation layer, arranged outside at the polyvinyl chloride insulation layer has middle flame retardant coating, arranged outside at middle flame retardant coating has interior flame-retardant layer, arranged outside at interior flame-retardant layer has outer flame retardant coating, the arranged outside of flame retardant coating has outer flame-retardant layer outside, the arranged outside of flame-retardant layer has armour outside, in the arranged outside of armour the pvc sheath layer is arranged.

Further improvement of the utility model is: cable core comprises conductor, in the arranged outside of conductor inner insulating layer is arranged, and in the arranged outside of inner insulating layer screen is arranged, and at the arranged outside matcoveredn of screen, in the arranged outside of protective layer interior flame retardant coating is arranged.

Further improvement of the utility model is: armour is the armour that the finer wire braiding forms.

Further improvement of the utility model is: protective layer uses waterproofing rope to fill.

The beneficial effects of the utility model are: cable of the present utility model has adopted three layers of flame retardant coating, so that the fire-resistant effect of cable improves, flame retardant coating can effectively prevent hydracid corrosive gas harmful to human and the equipment that cable discharges when the breaking out of fire after-combustion produces the substance combustion of a large amount of dense smokes and Halogen, the utility model has also adopted dielectric layers, the insulating reliability of polyvinyl chloride insulation layer is large, two-layer flame-retardant layer and pvc sheath layer have played good flame retardant effect, prolong the useful life of cable.

The utility model is simple in structure, and intensity is good, and is easily manufactured, high temperature resistant, and anti-flammability is tender good, and ageing resistace is superior, long service life.

Description of drawings

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

Wherein: 1-conductor, 2-inner insulating layer, 3-screen, flame retardant coating in the 4-protective layer, 5-, 6-belting layer, 7-polyvinyl chloride insulation layer, flame-retardant layer in the flame retardant coating among the 8-, 9-, the outer flame retardant coating of 10-, the outer flame-retardant layer of 11-, 12-armour, 13-pvc sheath layer.

Embodiment

In order to deepen that understanding of the present utility model is described in further detail the utility model below in conjunction with drawings and Examples, this embodiment only is used for explaining the utility model, protection range of the present utility model is not consisted of to limit.

Shown in Fig. 1; the utility model is a kind of polyvinyl chloride insulation and shield sleeve flame; fireproof power cable; comprise several cable cores; described cable core comprises conductor 1; conductor 1 is copper core or aluminium core; arranged outside at described conductor 1 has inner insulating layer 2; arranged outside at described inner insulating layer 2 has screen 3; arranged outside matcoveredn 4 at described screen 3; described protective layer 4 uses waterproofing rope to fill; waterproofing rope plays waterproof action; arranged outside at described protective layer 4 has interior flame retardant coating 5; tie up stranded rear the twining by belting layer 6 of described several cable cores; arranged outside at described belting layer 6 has polyvinyl chloride insulation layer 7; arranged outside at described polyvinyl chloride insulation layer 7 has middle flame retardant coating 8; arranged outside at described middle flame retardant coating 8 has interior flame-retardant layer 9; arranged outside at described interior flame-retardant layer 9 has outer flame retardant coating 10; arranged outside at described outer flame retardant coating 10 has outer flame-retardant layer 11; arranged outside at described outer flame-retardant layer 11 has armour 12; the armour that described armour 12 forms for finer wire braiding has pvc sheath layer 13 in the arranged outside of described armour 12.Cable of the present utility model has adopted three layers of flame retardant coating, so that the fire-resistant effect of cable improves, flame retardant coating can effectively prevent hydracid corrosive gas harmful to human and the equipment that cable discharges when the breaking out of fire after-combustion produces the substance combustion of a large amount of dense smokes and Halogen, the utility model has also adopted dielectric layers, the insulating reliability of polyvinyl chloride insulation layer is large, two-layer flame-retardant layer and pvc sheath layer have played good flame retardant effect, prolong the useful life of cable.

Claims

1. A flame-retardant and fire-resistant power cable with polyvinyl chloride insulation and sheath, including several cable cores, which are twisted through the wrapping layer (6) after the several cable cores are twisted, characterized in that: A polyvinyl chloride insulating layer (7) is arranged on the outer side of the wrapping layer (6), and an intermediate refractory layer (8) is arranged on the outer side of the polyvinyl chloride insulating layer (7), and the intermediate refractory layer (8) ) is provided with an inner flame-retardant layer (9), an outer fire-resistant layer (10) is arranged outside the inner flame-resistant layer (9), and an outer flame-resistant layer (10) is arranged outside the outer fire-resistant layer (10) A layer (11), an armor layer (12) is arranged on the outer side of the outer flame-retardant layer (11), and a polyvinyl chloride sheath layer (13) is arranged on the outer side of the armor layer (12).

2. A polyvinyl chloride insulated and sheathed flame-retardant and fire-resistant power cable according to claim 1, characterized in that: the cable core includes a conductor (1), and an inner cable is arranged outside the conductor (1). An insulating layer (2), a shielding layer (3) is arranged on the outer side of the inner insulating layer (2), a protective layer (4) is arranged on the outer side of the shielding layer (3), and a protective layer (4) is arranged on the outer side of the protective layer (4) ) is provided with an inner refractory layer (5) on the outside.

3. A polyvinyl chloride insulated and sheathed flame-retardant and fire-resistant power cable according to claim 1, characterized in that: the armor layer (12) is an armor layer braided by thin steel wires.

4. A polyvinyl chloride insulated and sheathed flame-retardant and fire-resistant power cable according to claim 2, characterized in that: the protective layer (4) is filled with a water-blocking rope.