CN104036864A

CN104036864A - Novel overhead insulation power cable

Info

Publication number: CN104036864A
Application number: CN201410296096.0A
Authority: CN
Inventors: 蒋军熙; 卫宇
Original assignee: Jiangsu Kai Da Cable Co Ltd
Current assignee: Jiangsu Kai Da Cable Co Ltd
Priority date: 2014-06-27
Filing date: 2014-06-27
Publication date: 2014-09-10

Abstract

The invention discloses a novel overhead insulation power cable which comprises a cable core. The cable core is formed by a plurality of insulation wire cores and a bearing core in a twisting mode. A filling layer is arranged on a gap of the cable wire, and a wrapping tape layer is arranged outside the filling layer. A shielding layer is arranged outside the wrapping tape layer, an impact resistance layer is arranged outside the shielding layer, and an outer sheath layer is arranged outside the impact resistance layer. The insulation wire cores are formed by the fact that conductors are extruded outside insulation layers. Each insulation layer is formed by composite adhesion of a crosslinked polyethylene insulating material layer with the thickness being 1-2 mm and a polyvinyl chloride insulation material layer with the thickness being 3-3.5 mm. The outer sheath layer is formed by composite adhesion of a plastic layer with the thickness being 1-1.5, a halogen-free low-smoke antiflaming polyolefin material layer with the thickness being 1-1.5 mm from inside to outside. The novel overhead insulation power cable has the advantages of being good in flame retardance, good in insulation performance, good in filling effect, long in service life and the like.

Description

A kind of novel built on stilts insulated power cable

Technical field

The present invention relates to electric wire field, especially a kind of novel built on stilts insulated power cable.

Background technology

Along with the fast development of national economy, as the aortal electric wire of national economy, its consumption and the scope of application are increasing.In recent years, the industries such as power plant, transformer station, smelting and petrochemical industry, very big to the demand of cable.Power cable is for transmitting and distribute the power transmission line of electric energy, is usually used in the lead line in Urban Underground electrical network, power station, the in-line power of industrial and mining enterprises and cross river, the submarine transmission line in sea is excessively specifically designed to the electric wire in the places such as subway tunnel, light rail in addition.

At present, most of aerial cable ubiquity is short useful life, can not grow distance and set up, and insulation effect is poor, and packed layer material does not meet instructions for use, and filling effect is undesirable, and bulk strength is poor simultaneously, easily damaged.

Summary of the invention

In order to solve, the deficiencies in the prior art provide a kind of corrosion resistance and good, anti-flammability, insulation effect is good, fail safe is good in the present invention, long service life.

For solving above technical problem, a kind of novel built on stilts insulated power cable of the present invention, comprises cable core, and its cable core is to add stranded forming of load bearing core by many insulated wire cores; The gap of cable core is provided with packed layer, in described packed layer outside, is provided with belting layer, in described belting layer outside, is provided with screen, in described screen outside, is provided with anti-impacting layer, in described anti-impacting layer outside, is provided with external sheath layer; Described insulated wire cores consists of conductor and the insulating barrier that is extruded in outside conductor; Compound being sticked together of polychloroethylene insulation material layer that the crosslinked polyethylene insulation material layer that described insulating barrier is 1-2mm by thickness and thickness are 3-3.5mm forms; Three layers of compound being sticked together of plastic layer that the halogen-free and low-smoke flame-retardant polyolefin material layer that the plastic layer that described external sheath layer is 1-1.5mm by thickness from inside to outside, thickness are 1-2mm and thickness are 1-1.5mm form.

Further improve, on described insulating barrier, be provided with identification band.

Further improve, described packed layer is composite material of silicon carbide packed layer.

Beneficial effect of the present invention is:

Compared with prior art, main improvement of the present invention is: insulating layer of conductor has adopted new structure, from original one deck structure, becomes two layer composite structure, and insulation effect is provided, and effect can reach original 2 times; External sheath layer has also been used three-layer composite structure, uses this structure, plays good protective action, and product is cracky not, and oversheath is more firm.Adopt anti-impacting layer, can effectively improve product stability, adopt composite material of silicon carbide packed layer, can improve filling effect, adopt high strength load bearing core, can improve bulk strength, be beneficial to the built on stilts laying of long distance, this long product lifecycle, realistic instructions for use.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is the structural representation of insulating barrier of the present invention;

Fig. 3 is the structural representation of oversheath of the present invention.

Embodiment

Below in conjunction with accompanying drawing, the invention will be described further.

As shown in Figure 1, a kind of novel built on stilts insulated power cable, comprises cable core, and its cable core is to add stranded forming of load bearing core 3 by many insulated wire cores; The gap of cable core is provided with packed layer 4, in described packed layer 4 outsides, is provided with belting layer 5, in described belting layer 5 outsides, is provided with screen 6, in described screen 6 outsides, is provided with anti-impacting layer 7, in described anti-impacting layer 7 outsides, is provided with external sheath layer 8; Described insulated wire cores consists of conductor 1 and the insulating barrier 2 that is extruded in outside conductor 1; On described insulating barrier 2, be provided with identification and be with 9.

As shown in Figure 2, compound being sticked together of polychloroethylene insulation material layer that the crosslinked polyethylene insulation material layer that described insulating barrier 2 is 1-2mm by thickness and thickness are 3-3.5mm forms.

As shown in Figure 3, three layers of compound being sticked together of plastic layer that the plastic layer that described external sheath layer 8 is 1-1.5mm by thickness from inside to outside, the halogen-free and low-smoke flame-retardant polyolefin material layer that thickness is 1-2mm and thickness are 1-1.5mm form.

Described packed layer 4 is composite material of silicon carbide packed layer.

Above-mentioned is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvement and adjustment, these improvement and adjustment also should be considered as protection scope of the present invention.

Claims

1. a novel built on stilts insulated power cable, comprises cable core, and its cable core is to add stranded the forming of a load bearing core (3) by many insulated wire cores; The gap of cable core is provided with packed layer (4), in described packed layer (4) outside, be provided with belting layer (5), in described belting layer (5) outside, be provided with screen (6), in described screen (6) outside, be provided with anti-impacting layer (7), in described anti-impacting layer (7) outside, be provided with external sheath layer (8); Described insulated wire cores is by conductor (1) and be extruded in outer insulating barrier (2) formation of conductor (1); It is characterized in that: compound being sticked together of polychloroethylene insulation material layer that the crosslinked polyethylene insulation material layer that described insulating barrier (2) is 1-2mm by thickness and thickness are 3-3.5mm forms; Three layers of compound being sticked together of plastic layer that the halogen-free and low-smoke flame-retardant polyolefin material layer that the plastic layer that described external sheath layer (8) is 1-1.5mm by thickness from inside to outside, thickness are 1-2mm and thickness are 1-1.5mm form.

2. according to the novel built on stilts insulated power cable described in claim 1, it is characterized in that: on described insulating barrier (2), be provided with identification band (9).

3. according to the novel built on stilts insulated power cable described in claim 1, it is characterized in that: described packed layer (4) is composite material of silicon carbide packed layer.