CN205943574U - 10kV medium voltage power cable - Google Patents

Abstract

The utility model provides a 10kV medium voltage power cable, the sinle silk comprises conductor and composite insulation layer, and composite insulation layer is around wrapping on the conductor, the cable skin comprises the area that blocks water, composite aluminium -plastic tape, medium density polyethylene's inner sheath, armor, high density polyethylene's oversheath outside to interior in proper order, composite insulation layer form around the metal encapsulated shielding layer after the crowded shaping altogether by half conducting conductor shielding layer of cross -linking type, crosslinked polyethylene insulating layer and cross -linking type semiconduction insulation screen in proper order from inside to outside, extrude the protective layer of one deck cross section for the swallow -tail form outside the oversheath, the gasket for packing that the membrane material was torn to the polypropylene prolongs cable shaft to filling in the in -band portion that blocks water, with the sinle silk and the closely laminating of area that blocks water. The utility model discloses use the technical field such as power transmission in river, shallow water territory, have the characteristics waterproof, grease proofing, that the endurance is high.

Description

A kind of 10kV medium-pressure power cable

Technical field

This utility model belongs to cable, specifically provides a kind of 10kV medium-pressure power cable.

Background technology

The importance of cable is self-evident, and the economic loss that cable breakage brings is inestimable.Cable is being worked as using process In unavoidably can occur bending the problems such as, easily cable is caused damage, it is possible that using potential safety hazard.

Utility model content

This utility model specifically provides a kind of 10kV medium-pressure power cable, and core is made up of conductor 1 and composite insulation layer, Composite insulation layer wrapped on conductor 1；Cable outer layer is from inside to outside successively by waterstop 6, aluminium-plastic tape 7, the poly- second of Midst density The inner sheath 8 of alkene, armouring 9, the oversheath 10 of high density polyethylene (HDPE) form；Described composite insulation layer is from inside to outside successively by handing over After connection type semiconductive conductor shield 2, crosslinked polyetylene insulated layer 3 and cross-linking type semi-conductive insulation shield layer 4 coextrusion mold around Bag metal screen layer 5 is formed；It is the protective layer 13 of swallow-tail form in the outer one layer of cross section of extruding of oversheath 10；Polypropylene tearing membrane material The gasket for packing 11 of matter prolongs cable and is axially filled in inside waterstop 6, fits tightly with core and waterstop 6.

Described core quantity is that every cable arranges 3, arranges earth lead 12 1 between every both threads core.Ground connection Line 12 is near waterstop 6.

Described armouring 9 is specially one of galvanized steel strip, zinc-coated wire or combination both it.Galvanized steel strip armouring is In interior oversheath gap around galvanized steel strip of double-baging；Zinc-coated wire armouring is wrapped one layer of zinc-coated wire with one heart.Cable is added with armour Fill 9 structures, increased the mechanical strength of cable.Particularly steel wire armoured cable, can be used for there is fall laying occasion.

This utility model is applied in technical fields such as river, the electric power transmissions of shallow water area, and cable is provided simultaneously with splendid preventing Oiliness energy, can be equally used for oil resistant occasion.This utility model radial complex water-proof structure can be effectively prevented moisture immersion electricity Inside cable, sheathed structure makes cable possess radially longitudinal mechanical strength.Wire armoring makes cable possess not limited by drop Special geographical position processed lays feature, and the insulation of cable and restrictive coating are base material polymer material all using polyethylene, make cable Possesses high oil resistant characteristic.In a word, this utility model, on the basis of common power cable, increased resistance to strength capabilities, Thus effectively extending the service life of cable, reduce the maintenance cost of cable.

Aluminium-plastic tape overcoat, can not only improve the shielding propertiess of cable further, can also protect the compound of inside Screen layer, thus, greatly reduce composite shielding layer moisture absorption of the present invention, oxidation may be it is ensured that cable be long-term, efficient shield Cover effect.

The jacket thickness of utility model swallow-tail form is uneven, and during cable bend, that is, the lower end of dovetail is in the inner side of bending, Make cable lopping or on disk when, automatically the lower end side of dovetail is contracted in the inner side of cable, directive automatic volume Around and shrink, the bending stress that cable produces and distorting stress uniformly can be carried in the whole length of cable, reduce bending The concentration of stress, it is to avoid cable Local Damaged, is greatly improved the service life of cable.

Additionally, this utility model is provided with earth lead, in time electric energy can be input to greatly when cable occurs fracture Ground, at utmost reduces dangerous.

Brief description

With reference to Figure of description, this utility model is described in further details：

Fig. 1 is 10kV medium-pressure power cable overall structure diagram.

Specific embodiment

Reference numeral explanation：

1 conductor, 2 cross-linking type semiconductive conductor shields, 3 crosslinked polyetylene insulated layers, 4 cross-linking type semi-conductive insulation shield Layer, 5 metal screen layers, 6 waterstops, 7 aluminium-plastic tapes, the inner sheath of 8 medium density polyethylenes, 9 armourings, 10 high density polyethylene (HDPE)s Oversheath, 11 gasket for packings, 12 earth leads, 13 protective layers.

Described armouring 9 is specially one of galvanized steel strip, zinc-coated wire or combination both it.Galvanized steel strip armouring is In interior oversheath gap around galvanized steel strip of double-baging；Zinc-coated wire armouring is wrapped one layer of zinc-coated wire with one heart.Cable is added with armour Fill 9 structures, increased the mechanical strength of cable.Particularly

Embodiment 1

The present embodiment specifically provides a kind of 10kV medium-pressure power cable, and core is made up of conductor 1 and composite insulation layer, multiple Close insulating barrier wrapped on conductor 1；Cable outer layer is from inside to outside successively by waterstop 6, aluminium-plastic tape 7, medium density polyethylene Inner sheath 8, armouring 9, the oversheath 10 of high density polyethylene (HDPE) form；Described composite insulation layer is from inside to outside successively by crosslinking Wrapped after type semiconductive conductor shield 2, crosslinked polyetylene insulated layer 3 and cross-linking type semi-conductive insulation shield layer 4 coextrusion mold Metal screen layer 5 is formed；It is the protective layer 13 of swallow-tail form in the outer one layer of cross section of extruding of oversheath 10；Polypropylene tearing membrane material Gasket for packing 11 prolong cable and be axially filled in inside waterstop 6, fit tightly with core and waterstop 6.

Described core quantity is that every cable arranges 3, arranges earth lead 12 1 between every both threads core.Ground connection Line 12 is near waterstop 6.

Described armouring 9 is specially one of galvanized steel strip, zinc-coated wire or combination both it.

Embodiment 2

The present embodiment specifically used galvanized steel strip armouring, remaining structure, embodiment and Expected Results and embodiment 1 phase With.

Embodiment 3

The present embodiment specifically used zinc-coated wire armouring, remaining structure, embodiment and Expected Results and embodiment 1 phase With.

Embodiment 4

The present embodiment is not provided with earth lead, and remaining structure, embodiment and Expected Results are same as Example 1.

Above-described embodiment is only that technology design of the present utility model and feature are described, its object is to allow and is familiar with technique Personage will appreciate that content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this. All equivalence changes made according to this utility model spirit or modification, all should cover protection domain of the present utility model it Interior.

Claims (4)

1. a kind of 10kV medium-pressure power cable it is characterised in that：Core is by conductor（1）Constitute with composite insulation layer, compound inslation Layer wrapped in conductor（1）On；Cable outer layer is from inside to outside successively by waterstop（6）, aluminium-plastic tape（7）, medium density polyethylene Inner sheath（8）, armouring（9）, the oversheath of high density polyethylene (HDPE)（10）Composition；Described composite insulation layer is from inside to outside successively By cross-linking type semiconductive conductor shield（2）, crosslinked polyetylene insulated layer（3）With cross-linking type semi-conductive insulation shield layer（4）Altogether Wrapped metal screen layer after extrusion forming（5）Formed；In oversheath（10）Outer one layer of cross section of extruding is the protective layer of swallow-tail form （13）；The gasket for packing of polypropylene tearing membrane material（11）Prolong cable and be axially filled in waterstop（6）Inside, with core and waterstop （6）Fit tightly.

2. according to the 10kV medium-pressure power cable described in claim 1 it is characterised in that：Described core quantity is every cable Setting 3, arranges earth lead between every both threads core（12）One.

3. according to the 10kV medium-pressure power cable described in claim 2 it is characterised in that：Earth lead（12）Near waterstop（6）.

4. according to the 10kV medium-pressure power cable described in claim 1 it is characterised in that：Described armouring（9）Specially zinc-plated One of steel band, zinc-coated wire or combination both it.