CN206574528U

CN206574528U - The coaxial composite plastic insulated cable of below 35kV copper core aluminium cores

Info

Publication number: CN206574528U
Application number: CN201620813812.2U
Authority: CN
Inventors: 陈培刚; 陈俊磊; 陈俊忠; 居苏
Original assignee: JIANGSU YUANFANG CABLE FACTORY CO Ltd
Current assignee: JIANGSU YUANFANG CABLE FACTORY CO Ltd
Priority date: 2016-07-30
Filing date: 2016-07-30
Publication date: 2017-10-20
Anticipated expiration: 2026-07-30

Abstract

The utility model discloses a kind of coaxial composite plastic insulated cable of below 35kV copper cores aluminium core, including cable core, the cable core is from inside to outside provided with inner wire, glass fiber filling, the first PVC insulating barriers and outer conductor；Described inner wire uses the frame mode of " 1+6 " is stranded to form by a copper conductor and six roots of sensation aluminium conductor；Outer conductor is spaced stranded form by quantity identical copper conductor and aluminium conductor；Extruded outside described cable core and zinc-plated armor is woven outside wrapped elastic cord breaker outside the 2nd PVC insulating barriers, the 2nd PVC insulating barriers, elastic cord breaker, zinc-plated armor is externally provided with aluminium sheath.The utility model has the advantages that high temperature resistant, resistance to burning, good insulating, anti-extrusion.

Description

The coaxial composite plastic insulated cable of below 35kV copper core aluminium cores

Technical field

The utility model is related to electric wire field, and in particular to a kind of coaxial composite plastic of below 35kV copper cores aluminium core is exhausted Edge cable.

Background technology

Plastic power cable used in domestic at present is quite varied, is usually used in Urban Underground power network, the extraction in power station The submarine transmission line of circuit, the in-line power of industrial and mining enterprises and crossing river and sea.The basic structure of the power cable of the type is by line Core（Conductor）, insulating barrier, screen layer and the part of protective layer four composition, its cost is relatively low, is adapted to large-scale use.Power cable In, plastic insulation material is usually cross-linking polyethylene materials, and its operating temperature of the power cable that the material is made also has at 90 DEG C The use of operating temperature is 70 DEG C of PVC material, sheath material is usually PVC material, it is excellent that the material has cost low, fire-retardant etc. Point.

The problem of prior art is present and shortcoming：

The conductor operating temperature of usual power cable is 60 DEG C, therefore uses the power cable of PVC material in external factor Under the influence of, cable be easy to occur conductor insulation temperature it is too high and so that the insulation of cable is ineffective and causes circuit short Road, the phenomenon such as puncture.

Utility model content

In order to overcome the deficiencies in the prior art, there is provided a kind of coaxial composite plastic insulation of below 35kV copper cores aluminium core Cable.

To achieve the above object, the utility model discloses a kind of below 35kV copper cores, the coaxial composite plastic insulation of aluminium core Cable, including cable core, the cable core is from inside to outside provided with inner wire, glass fiber filling, the first PVC insulating barriers and outer conductor； Described inner wire uses the frame mode of " 1+6 " is stranded to form by a copper conductor and six roots of sensation aluminium conductor；Outer conductor is by quantity Identical copper conductor and aluminium conductor are spaced stranded form；The 2nd PVC insulating barriers are extruded outside described cable core, the 2nd PVC is exhausted Zinc-plated armor is woven outside edge layer outside wrapped elastic cord breaker, elastic cord breaker, zinc-plated armor is externally provided with aluminium sheath.

Preferably, described elastic cord breaker includes flexible interior pad and flexible outer pad, the flexible interior pad and the outer pad of flexibility Between be provided with some air bags.

Preferably, described copper conductor is identical with the diameter of aluminium conductor.

Preferably, the thickness of the first described PVC insulating barriers is the 1/3 of the thickness of the 2nd PVC insulating barriers.

The beneficial effects of the utility model are：

1st, filling of the present utility model uses glass fiber, and glass fiber is inorganic matter, is not burnt, and will not produce harmful substance.

2nd, the utility model oversheath is made of metallic aluminium, will not be burnt, and will not also produce and appoint under flame condition What pernicious gas.

3rd, the utility model cable is integrally full symmetrical configuration, and inner and outer conductor is in concentric position, electromagnetic energy limitation Media between internal and external conductor, thus it is small with decaying, and shielding properties is high.

4th, elastic cord breaker of the present utility model can have been buffered effectively from extraneous pressure, and electricity is protected well Each layer of cable is not extruded by the external world so that cable can normally work.

5th, PVC insulating barriers are designed with outside the utility model internal and external conductor so that the insulating properties of cable is more preferable.

Brief description of the drawings

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

Fig. 2 is the structural representation of elastic cord breaker of the present utility model.

Embodiment

Below in conjunction with the accompanying drawings and specific embodiment, the utility model is further elucidated, it should be understood that these embodiments are only used for Illustrate the utility model rather than limit scope of the present utility model, after the utility model has been read, art technology Modification of the personnel to the various equivalent form of values of the present utility model falls within the application appended claims limited range.

As shown in figure 1, the utility model provides a kind of below 35kV copper cores, the coaxial composite plastic insulated cable of aluminium core, bag Cable core is included, the cable core fills the 3, the first PVC insulating barriers 4 and outer conductor provided with inner wire, glass fiber from inside to outside；Described Inner wire uses the frame mode of " 1+6 " is stranded to form by a copper conductor 1 and six roots of sensation aluminium conductor 2；Outer conductor is identical by quantity Copper conductor and aluminium conductor be spaced stranded form；The 2nd PVC insulating barriers 5, the 2nd PVC insulating barriers are extruded outside described cable core Weave zinc-plated armor 7 outside outer wrapped elastic cord breaker 6, elastic cord breaker, zinc-plated armor is externally provided with aluminium sheath 8, aluminium it is molten Point is 660 DEG C, is difficult generally fusing, is also only produced when aluminum pipe is melted without any harmful substance.

As shown in Fig. 2 described elastic cord breaker 6 includes pad 61 and flexible outer pad 63 in flexible, it is described it is flexible in pad and Some air bags 62 are provided between flexible outer pad.

The cable is integrally full symmetrical configuration, and inner and outer conductor is in concentric position, and electromagnetic energy is confined to internal and external conductor Between media, therefore small with decaying, shielding properties is high.

Described above is only preferred embodiment of the present utility model, it is noted that for the ordinary skill people of this area For member, on the premise of the utility model principle is not departed from, some variations and modifications can also be made, these also should be regarded as category In protection domain of the present utility model.

Claims

1. a kind of coaxial composite plastic insulated cable of below 35kV copper cores aluminium core, including cable core, it is characterised in that：The cable core from It is interior to being externally provided with inner wire, glass fiber filling, the first PVC insulating barriers and outer conductor；Described inner wire is by a copper conductor Use the frame mode of " 1+6 " is stranded to form with six roots of sensation aluminium conductor；Outer conductor is by quantity identical copper conductor and aluminium conductor interval Arrangement is stranded to be formed；Wrapped elastic cord breaker outside the 2nd PVC insulating barriers, the 2nd PVC insulating barriers is extruded outside described cable core, elasticity Zinc-plated armor is woven outside cushion, zinc-plated armor is externally provided with aluminium sheath.

2. the coaxial composite plastic insulated cable of below 35kV copper cores aluminium core according to claim 1, it is characterised in that：It is described Elastic cord breaker include in flexible pad and it is flexible it is outer pad, it is described it is flexible in pad it is flexible it is outer pad between be provided with some air bags.

3. the coaxial composite plastic insulated cable of below 35kV copper cores aluminium core according to claim 1, it is characterised in that：It is described Copper conductor it is identical with the diameter of aluminium conductor.

4. the coaxial composite plastic insulated cable of below 35kV copper cores aluminium core according to claim 1, it is characterised in that：It is described The first PVC insulating barriers thickness be the 2nd PVC insulating barriers thickness 1/3.