CN205984371U - Waterproofing type aluminum alloy medium voltage power cable - Google Patents

Abstract

The utility model discloses a waterproofing type aluminum alloy medium voltage power cable, including blocking water conductor, conductor shield, insulating layer, insulation screen, iron shielded layer, filling layer, first band layer, interior sheath, armor, second band layer, outer jacket, the conductor that blocks water is aluminum alloy conductor, and aluminum alloy conductor adopts the molded lines hank and compresses tightly or the layering mode of sticising, and the inside layering of conductor is wound the package or is indulged and wrap the area that blocks water to twine the yarn that blocks water, have good mechanical properties, creep resistance properties and block -water performance. The insulating layer adopts the even crowded package of water -resistant tree crosslinked polyethylene material on conductor shield. The cable good block -water performance has, has overcome ordinary power cable and be difficult to the environment that lays that the adaptation is moist, moisture is more, solved the influence and the harm that produce behind water or the aqueous vapor entering cable.

Description

A kind of waterproofing type aluminium alloy medium-pressure power cable

Technical field

This utility model is related to a kind of medium-pressure power cable, particularly to a kind of waterproofing type aluminium alloy medium-pressure power cable, This utility model belongs to technical field of wire cable manufacture.

Background technology

At present, adopt copper conductor medium-pressure power cable conductor, cost reaches more than 70% to copper product in the cable, this more Cable price is high, and copper resource relative shortage, and also ratio is larger for copper material price fluctuation amplitude, and bauxite resource is relative with rare earth resources Compared with horn of plenty, become the needs of national sustainable development with aluminum section copper.But aluminium creep-resistant property is poor, and tensile strength is little, aluminum Conductors power cable is also difficult to widely available application.

Adopting crosslinked polyetylene insulated medium-pressure power cable, common cross-linked polyethylene insulated cable is laying and running more Period is damaged by mechanical stress or external force, or cable moist, have longtime running in the environment of water, all can lead to outside moisture to Cable internal penetration, forms water tree under electric field action, and water tree transforms into permanent electric branch under electric field action, Lead to insulation breakdown.

Utility model content

Utility model purpose：The purpose of this utility model is to solve deficiency of the prior art, providing one kind to have Excellent block-water performance, overcome conventional power cable be difficult in adapt to humidity, moisture more lay environment, solve water or water Impact and the waterproofing type aluminium alloy medium-pressure power cable of harm that gas produces after entering cable.

Technical scheme：A kind of waterproofing type aluminium alloy medium-pressure power cable described in the utility model, including water-blocking conductor, leads Body screen layer, insulating barrier, insulation screen, metal screen layer, packed layer, the first belting layer, sheath, armor, the second bag Belt, outer jacket；It is provided with conductor shield outside water-blocking conductor, be provided with insulating barrier outside conductor shield, in insulating barrier It is provided with outward insulation screen, is provided with metal screen layer outside insulation screen, in stranding gap, be provided with implant, Become cable core peripheral hardware to be equipped with the first belting layer, be provided with sheath outside the first belting layer, outside sheath, be provided with armor, It is provided with the second belting layer outside armor, outside the second belting layer, be provided with outer jacket；

Described water-blocking conductor is aluminium alloy conductor, and aluminium alloy conductor is twisted using molded line and compresses or be layered and presses mode, leads Internal body portion layer is wrapped or vertical bag waterstop, and is wound around water blocking yarn, has good mechanical performance, creep-resistant property and water preventing ability Energy.

Further, described conductor shield is extruded and is partly led using the nonmetallic semiconductive material extruding or bag semi-conductive tape Electrical materials and appliances form.

Further, described insulating barrier is uniformly extruded on conductor shield using water resistant tree cross-linking polyethylene materials.

Further, described insulation screen, using nonmetallic, directly extruded and is combined closely or peelable with insulated wire cores From semi-conductive layer.

Further, described metal screen layer adopts one or more metal tape, metal knitted, tinsel and metal tape Combinative structure.

Further, described implant is non-hygroscopic using mutually compatible with cable insulation material and suitable cable operating temperature Property the waterproofing type polypropylene mesh tear rope or extruding closely knit packing of plastics.

Further, described first belting layer adopts the high-strength insulating waterstop of thickness 0.2 ~ 0.5mm wrapped in stranding On cable core；Second belting layer adopt thickness 0.2 ~ 0.5mm high strength non-woven fabric be wound around composition, as bed course wrapped in armor On, prevent outer jacket cracking during cable bend.

Further, described sheath is extruded using polyethylene or elastomer sheathing material and forms.

Further, described armor is formed using circle tinsel or metal band winding, to increase the tension of cable or anti- Pressure performance.

Further, described outer jacket is extruded using cracking resistant type polyethylene or elastomer sheathing material and forms.

Beneficial effect：Waterproofing type aluminium alloy power cable structure superiority described in the utility model is using the aluminum that blocks water Alloy conductor, water resistant tree are crosslinked polyetylene insulated, interior outer jacket adopts PE plastics or elastomeric material sheath.There is excellent resistance Aqueouss energy, overcome conventional power cable be difficult in adapt to humidity, moisture more lay environment, solve water or aqueous vapor enter electricity The impact producing after cable and harm.And this waterproofing type aluminium alloy power cable bending property is better than copper, aluminum conductor cable, it is suitable for spy Lay under the conditions of different small space, have the advantages that external diameter is little, lightweight, creep resistant, corrosion-resistant, cable can be improved and use the longevity Life.

Brief description

Fig. 1 is construction of cable schematic diagram of the present utility model.

Specific embodiment

A kind of waterproofing type aluminium alloy medium-pressure power cable as shown in Figure 1, includes water-blocking conductor 1, conductor shield 2, exhausted Edge layer 3, insulation screen 4, metal screen layer 5, packed layer 6, the first belting layer 7, sheath 8, armor 9, the second belting layer 10th, outer jacket 11；It is provided with conductor shield 2 outside water-blocking conductor 1, be provided with insulating barrier 3 outside conductor shield 2, exhausted It is provided with insulation screen 4 outside edge layer 3, be provided with metal screen layer 5 outside insulation screen 4, be provided with stranding gap Implant 6, is becoming cable core peripheral hardware to be equipped with the first belting layer 7, is being provided with sheath 8, in sheath 8 outside the first belting layer 7 It is provided with outward armor 9, outside armor 9, is provided with the second belting layer 10, outside the second belting layer 10, be provided with outer jacket 11；

Described water-blocking conductor 1 is aluminium alloy conductor, and aluminium alloy conductor is twisted using molded line and compresses or be layered and presses mode, leads Internal body portion layer is wrapped or vertical bag waterstop, and is wound around water blocking yarn, has good mechanical performance, creep-resistant property and water preventing ability Energy.

Described conductor shield 2 extrudes semiconductive material group again using the nonmetallic semiconductive material extruding or bag semi-conductive tape Become.

Described insulating barrier 3 is uniformly extruded on conductor shield 2 using water resistant tree cross-linking polyethylene materials.

Described insulation screen 4 adopts nonmetallic, directly extrudes and combines closely with insulated wire cores or strippable partly lead Electric layer.

Described metal screen layer 5 adopts one or more metal tape, metal knitted, tinsel to combine knot with metal tape Structure.

Described implant 6 is using non-hygroscopic waterproofing type that is mutually compatible with cable insulation material and being suitable for cable operating temperature Polypropylene mesh tear rope or the extruding closely knit packing of plastics.

Described first belting layer 7 adopts on the wrapped cable core in stranding of high-strength insulating waterstop of thickness 0.2 ~ 0.5mm；The Two belting layers 10 adopt the high strength non-woven fabric of thickness 0.2 ~ 0.5mm to be wound around composition, as bed course wrapped on armor 9, prevent Only outer jacket cracking during cable bend.

Described sheath 8 is extruded using polyethylene or elastomer sheathing material and forms.

Described armor 9 is formed using circle tinsel or metal band winding, to increase tension or the compressive property of cable.

Described outer jacket 11 is extruded using cracking resistant type polyethylene or elastomer sheathing material and forms.

Aluminium alloy conductor is to add the multiple elements such as copper, silicon, ferrum and rare earth in original metallic conductor aluminum, with respect to copper core Cable weight substantially reduces, and is easily installed and lays；With respect to aluminium cable increased the tensile strength of cable, electric conductivity and Creep-resistant property.And aluminium alloy cable bending property is superior to copper, aluminum conductor cable, meets National Sustainable Development Strategies.

This waterproofing type aluminium alloy medium-pressure power cable can be used for the higher coastal area of humidity, water level, and rainy season is more The torrid zone or subtropical zone, increase cable service life, and environmental sound.

The above, be only preferred embodiment of the present utility model, not this utility model is made any formal Restriction although this utility model is disclosed above with preferred embodiment, but be not limited to this utility model, any ripe Know professional and technical personnel, in the range of without departing from technical solutions of the utility model, when in the technology of available the disclosure above Hold and make a little Equivalent embodiments changing or be modified to equivalent variations, as long as without departing from technical solutions of the utility model Hold, any simple modification, equivalent variations and modification above example made according to technical spirit of the present utility model, all still Belong in the range of technical solutions of the utility model.

Claims (10)

1. a kind of waterproofing type aluminium alloy medium-pressure power cable it is characterised in that：Including water-blocking conductor（1）, conductor shield（2）、 Insulating barrier（3）, insulation screen（4）, metal screen layer（5）, packed layer（6）, the first belting layer（7）, sheath（8）, armouring Layer（9）, the second belting layer（10）, outer jacket（11）；In water-blocking conductor（1）It is provided with outward conductor shield（2）, in conductor shielding Layer（2）It is provided with outward insulating barrier（3）, in insulating barrier（3）It is provided with outward insulation screen（4）, in insulation screen（4）Outer setting There is metal screen layer（5）, in stranding gap, it is provided with implant（6）, it is equipped with the first belting layer becoming cable core peripheral hardware（7）, In the first belting layer（7）It is provided with outward sheath（8）, in sheath（8）It is provided with outward armor（9）, in armor（9）Peripheral hardware It is equipped with the second belting layer（10）, in the second belting layer（10）It is provided with outward outer jacket（11）；

Described water-blocking conductor（1）For aluminium alloy conductor, aluminium alloy conductor is twisted using molded line and mode, conductor are pressed in compression or layering Interior laminate layer is wrapped or vertical bag waterstop, and is wound around water blocking yarn, has good mechanical performance, creep-resistant property and water preventing ability Energy.

2. a kind of waterproofing type aluminium alloy medium-pressure power cable according to claim 1 it is characterised in that：Described conductor shielding Layer（2）Semiconductive material composition is extruded again using the nonmetallic semiconductive material extruding or bag semi-conductive tape.

3. a kind of waterproofing type aluminium alloy medium-pressure power cable according to claim 1 it is characterised in that：Described insulating barrier （3）Uniformly it is extruded in conductor shield using water resistant tree cross-linking polyethylene materials（2）On.

4. a kind of waterproofing type aluminium alloy medium-pressure power cable according to claim 1 it is characterised in that：Described insulation shielding Layer（4）Using nonmetallic, directly extrude and combine closely with insulated wire cores or strippable semi-conductive layer.

5. a kind of waterproofing type aluminium alloy medium-pressure power cable according to claim 1 it is characterised in that：Described metallic shield Layer（5）Combinative structure using one or more metal tape, metal knitted, tinsel and metal tape.

6. a kind of waterproofing type aluminium alloy medium-pressure power cable according to claim 1 it is characterised in that：Described implant （6）Using non-hygroscopic waterproofing type polypropylene mesh tear rope that is mutually compatible with cable insulation material and being suitable for cable operating temperature Or the packing that extruding plastics are closely knit.

7. a kind of waterproofing type aluminium alloy medium-pressure power cable according to claim 1 it is characterised in that：Described first band Layer（7）Using on the wrapped cable core in stranding of the high-strength insulating waterstop of thickness 0.2 ~ 0.5mm；Second belting layer（10）Using thickness Degree 0.2 ~ 0.5mm high strength non-woven fabric be wound around composition, as bed course wrapped in armor（9）On, prevent outside during cable bend Sheath ftractures.

8. a kind of waterproofing type aluminium alloy medium-pressure power cable according to claim 1 it is characterised in that：Described sheath （8）Extruded using polyethylene or elastomer sheathing material and form.

9. a kind of waterproofing type aluminium alloy medium-pressure power cable according to claim 1 it is characterised in that：Described armor （9）Using circle tinsel or metal band winding composition, to increase tension or the compressive property of cable.

10. a kind of waterproofing type aluminium alloy medium-pressure power cable according to claim 1 it is characterised in that：Described outer jacket （11）Extruded using cracking resistant type polyethylene or elastomer sheathing material and form.