CN201773639U

CN201773639U - 10 kV Abrasion-resistant steel-cored overhead insulated cable

Info

Publication number: CN201773639U
Application number: CN2010202881186U
Authority: CN
Inventors: 毛方忠; 尚乃福; 吕红军
Original assignee: Anhui Ming Dou Electric Power Cable Co Ltd
Current assignee: Anhui Ming Dou Electric Power Cable Co Ltd
Priority date: 2010-08-04
Filing date: 2010-08-04
Publication date: 2011-03-23
Anticipated expiration: 2020-08-04

Abstract

The utility model discloses a 10 kV abrasion-resistant steel-cored overhead insulated cable. The cable is characterized in that a conductor is adopted as the center, and an insulation layer and a abrasion-resistant nylon sheath are arranged at the periphery of the conductor in sequence from the interior to the exterior; the inner core of the conductor of the cable is formed in the way that a galvanized steel wire is adopted as a center line, and another six galvanized steel wires are adopted to form an encircling layer to the center line; and a plurality of aluminum stranded wire layers formed by intertwisting the single aluminium wires are arranged at the periphery of the encircling layer, so as to form a steel-cored aluminium stranded wire conductor. The utility model has good conductivity, insulativity and weatherability and high tensile strength, can increase the erection span of the cable, reduce the amount of poles and towers, save the construction cost of the wire engineering, and improve the vibration performance of the cable.

Description

A kind of 10kV abrasion-resistant stee core overhead insulated cable

Technical field

The utility model relates to cable, a kind of 10kV aerial insulated cable of more specifically saying so.

Background technology

In China, the conductor of the 10kV black crosslinked polyethylene insulated aerial insulated cable of producing according to international standard mainly uses aluminium, copper product to draw that monofilament is stranded to form, because of its advantage, in city, suburb power transmission and transformation line, be used widely at aspects such as electric property, security performance, economic performances.But the shaft tower span generally is not more than about 50m; Along with the expansion of the new round rural power grids of national grid upgrading engineering, in the suburb, the rural area erects power transmission lines and be subjected to the influence in geographical position, the shaft tower distance is bigger, if use the aluminium core overhead insulated cable, can increase design difficulty, the tensile strength that cable is subjected to increases, and the nargin of circuit reduces; If adopt the copper core overhead insulated cable, because the copper material unit mass is big, can cause the radian that dangles of circuit to increase, span reduces, and increases the quantity of shaft tower, strengthens the engineering cost of circuit.

Be accompanied by the quickening of China's small and medium-sized cities pace of construction, the 10kV power distribution network circuit in many cities is arranged more random, overhead transmission line is crisscross, the transformation in city forms high building and stands in great numbers, seriously taken the power transmission and transformation line corridor, existing 10kV black crosslinked polyethylene insulated aerial cable adopts carbon black as antioxidant, through exposing to the sun and rain for a long time, is easy to generate leaky after the cable laying; When especially transmission line uses under passing through forest and large stretch of woods environment, cable is subjected to the scraped finish of branch and the erosion of other extraneous its factors throughout the year, the easier insulating barrier of cable that makes damages, make the fail safe of circuit reduce, constitute a latent danger for the circuit security of operation, cause the transmission line malfunction rate to increase, cause cable not reach design service life.

The utility model content

The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of have good conduction, insulation, weatherability are provided, has high-tensile, to increase the quantity of setting up span, minimizing shaft tower of cable, save the 10kV abrasion-resistant stee core overhead insulated cable of line project construction cost, raising strum performance.

The utility model technical solution problem adopts following technical scheme:

The design feature of the utility model 10kV abrasion-resistant stee core overhead insulated cable is: described cable is to be the center with the conductor, sets gradually insulating barrier and wear resistant nylon sheath from inside to outside in the periphery of conductor; The conductor inner core of described cable conductor is to be center line, with six roots of sensation galvanized steel wire described center line to be formed around layer with a galvanized steel wire; In described periphery around layer, have the aluminium stranded conductor layer that multilayer is twisted into by many aluminium single lines, form the steel reinforced aluminium conductor conductor.

Design feature of the present utility model also is:

Between described cable conductor and insulating barrier, semiconductive shielding layer is set, coats cable conductor with described semiconductive shielding layer.

Described insulating barrier is to be material with crosslinked polyethylene XLPE or high density polyethylene, and is set to the silver gray insulating barrier, and described wear resistant nylon sheath also is set to the silver gray sheath.

Compared with the prior art, the utility model beneficial effect is embodied in:

1, the utility model possesses good conduction, insulation, weather resistance; The high-tensile advantage that also has steel reinforced aluminium conductor.

2, the utility model has increased the anti-wear of cable, adopt the silver gray insulating barrier, when guaranteeing the power transmission and transformation line safe operation, has satisfied the requirement that urban power distribution network adapts to urban beautification, brightening again.

3, wear resistant nylon cover had not only increased the insulation property of cable but also had increased the anti-wear performance of cable in the utility model.

Description of drawings

Fig. 1 is the utility model structural representation.

Embodiment

Referring to Fig. 1, present embodiment is to be the center with the conductor, sets gradually insulating barrier 4 and wear resistant nylon sheath 5 from inside to outside in the periphery of conductor; The conductor inner core of cable conductor is to be center line 1, with the six roots of sensation galvanized steel wire center line 1 to be formed around layer 1a with a galvanized steel wire; At skin around layer 1a, have multilayer and be twisted into aluminium stranded conductor layer 2 by many aluminium single lines, form the steel reinforced aluminium conductor conductor.

Can between cable conductor and insulating barrier 4, semiconductive shielding layer 3 be set, coat cable conductor with semiconductive shielding layer 3.

Insulating barrier 4 is to be material, to be set to the silver gray insulating barrier that with crosslinked polyethylene XLPE or high density polyethylene its peripheral wear resistant nylon sheath also is set to silver gray.

In concrete the enforcement, the stranded conductor core should meet the respective specified of GB/T1179-2008; Conductive surface should bright and clean, no greasy dirt, the single line of the burr of not damaged insulation, sharp edge and projection or fracture; The used semiconductive material of semiconductive shielding layer can be cross-linking type or the non-crosslinked type, its performance should meet GB/T14049-2008 appendix C regulation.Semiconductive shielding layer should be coated on the conductor equably, and the surface should be smooth, does not have obvious twisted wire burr, the wedge angle that do not have, particle, the vestige that burns; The Insulation Material performance should meet the requirement of GB/T14049-2008 appendix C.It is 0.6mm that the shield semiconductors layer thickness is set; Thickness of insulating layer is 3.4mm; Wear resistant nylon jacket thickness 0.6mm.

10kV abrasion-resistant stee core overhead insulated cable of the present utility model comprises plain edition and two kinds of models of light and thin type; Wherein light-duty thin insulating structure aerial cable is not provided with semiconductive shielding layer.

Claims

1. 10kV abrasion-resistant stee core overhead insulated cable, it is characterized in that: described cable is to be the center with the conductor, sets gradually insulating barrier (4) and wear resistant nylon sheath (5) from inside to outside in the periphery of conductor; The conductor inner core of described cable conductor is to be center line (1), with six roots of sensation galvanized steel wire described center line (1) to be formed around layer (1a) with a galvanized steel wire; In described periphery around layer (1a), have the aluminium stranded conductor layer (2) that multilayer is twisted into by many aluminium single lines, form the steel reinforced aluminium conductor conductor.

2. 10kV abrasion-resistant stee core overhead insulated cable according to claim 1 is characterized in that between described cable conductor and insulating barrier (4) semiconductive shielding layer (3) being set, and coats cable conductor with described semiconductive shielding layer (3).

3. 10kV abrasion-resistant stee core overhead insulated cable according to claim 1, it is characterized in that described insulating barrier (4) is is material with crosslinked polyethylene XLPE or high density polyethylene, and being set to the silver gray insulating barrier, described wear resistant nylon sheath (5) also is set to the silver gray sheath.