CN202871322U

CN202871322U - Middle voltage wind energy cable with voltage not larger than 35kV

Info

Publication number: CN202871322U
Application number: CN 201220413068
Authority: CN
Inventors: 虞文品; 陈小洋; 迟先吉; 刘文庭; 李慧
Original assignee: XINGLE CABLE CO Ltd
Current assignee: XINGLE CABLE CO Ltd
Priority date: 2012-08-16
Filing date: 2012-08-16
Publication date: 2013-04-10
Anticipated expiration: 2022-08-16

Abstract

A middle voltage wind energy cable with voltage not larger than 35kV is provided. The cable comprises a conductor which is formed by compound stranding bunch-stranded braided wires, a high temperature resistant semi-conductive nylon tape with transition resistance not larger than 50 ohm is wound outside the conductor, a three-layer co-extrusion disposable extruded conductor shielding layer, an Ethylene-Propylene-Diene Monomer insulation layer and an insulation shielding layer are adopted outside the semi-conductive nylon tape, a copper wire separated shielding layer is sparsely wound outside the insulation shielding layer, a copper tape shielding layer is tightly fastened outside the copper wire separated shielding layer, thus an insulation wire core is formed; semi-conductive filling strips are arranged between three insulation wire cores, the three insulation wire cores are stranded to form a cable core with a lay ratio not larger than 12 times, a high slipping polestar film belt is lapped outside the cable core, and an oversheath is extruded outside the polyester film belt. The cable has good insulation performance, is low temperate resistant and flexible, is salt bath resistant and ultraviolet resistant, has high and low temperature, is flexible and has high insulation.

Description

35kV reaches with lower pressure wind energy cable

Technical field

The utility model relates to a kind of cable, mainly refers to a kind of 35kV and following wind energy cable.

Background technology

In recent years, the newly-increased installed capacity of wind-driven power of China surpasses 7.5 hundred million kilowatts especially with average annual 100% speed high speed development, particularly offshore wind energy resource, and the installed capacity of blower fan unit develops to 5MW from 3MW, and the wind-powered electricity generation unit maximizes becomes development trend.This trend not only requires supporting wind energy cable to have good insulating performance, the characteristic such as low temperature resistant, soft, more requires salt tolerant bath, uvioresistant and high voltage appearance grade.

Summary of the invention

The purpose of this utility model is to provide a kind of 35kV and with lower pressure wind energy cable, it has the characteristics such as salt tolerant bath, uvioresistant, high low temperature, softness, high insulation.

For achieving the above object, the solution that the utility model is taked is: a kind of 35kV reaches with lower pressure wind energy cable, it comprises conductor, conductor adopts the bundle stranded wire to twist again and forms, the outer wrapped transition resistance of conductor is not more than the high temperature resistant semiconductive nylon tape of 50 Ω, three-layer co-extruded disposable conductor shield, Ethylene Propylene Terpolymer insulating barrier and the insulation screen of extruding of the outer employing of semiconductive nylon tape, insulation screen is dredged around the copper wire sub-shield outward, the copper wire sub-shield is tightened the copper strip shielding layer outward, consists of insulated wire cores; Between the three eradication edge cores semiconductive packing is arranged, three thoroughly do away with the edge cores to be not more than 12 times of stranded formation cable cores of lay ratio, and cable core is the mylar tape of wrapped high slipping property outward, and mylar tape extrudes oversheath outward.

Insulation shielding is outer can be adopted respectively copper wire to dredge around, copper strips gap according to actual use occasion difference to tighten, proof copper-wire braided and carry ground core proof copper-wire braided structure secretly and consist of the insulated wire cores structure.Three eradication edge cores are stranded to be not more than 12 times of lay ratios, and stranded process is with selecting the semiconductive packing to fill rounding.This kind 35kV reaches with lower pressure wind energy cable, not only has good insulating performance, low temperature resistant, soft, and has the characteristics such as salt tolerant bath, uvioresistant, high low temperature, softness, high insulation.

Description of drawings

Fig. 1 is the structural representation of present embodiment one.Fig. 2 is the structural representation of present embodiment two.Among the figure: 1, conductor, 2, the semiconductive nylon tape, 3, conductor shield, 4, the Ethylene Propylene Terpolymer insulating barrier, 5, insulation screen, 6, the copper wire sub-shield, 7, the copper strip shielding layer, 8, the semiconductive packing, 9, mylar tape, 10, oversheath, 11, core.

Embodiment

Referring to Fig. 1, a kind of 35kV reaches with lower pressure wind energy cable, it comprises conductor 1, conductor 1 adopts the bundle stranded wire to twist again and forms, conductor 1 outer wrapped transition resistance is not more than the high temperature resistant semiconductive nylon tape 2 of 50 Ω, three-layer co-extruded disposable conductor shield 3, Ethylene Propylene Terpolymer insulating barrier 4 and the insulation screen 5 of extruding of semiconductive nylon tape 2 outer employings, insulation screen 5 outer dredging around copper wire sub-shield 6, the copper wire sub-shield 6 outer copper strip shielding layers 7 of tightening consist of insulated wire cores; There is semiconductive packing 8, three to thoroughly do away with the edge cores to be not more than 12 times of stranded formation cable cores of lay ratio, the mylar tape 9 of the outer wrapped high slipping property of cable core, the mylar tape 9 outer oversheaths 10 that extrude between the three eradication edge cores.Oversheath 10 can be selected coil paper material, cracking resistance low-smoke halogen-free polyolefin or neoprene and similar material rubber according to actual needs.Referring to Fig. 1 and Fig. 2, described edge screen 5 outer dredging around copper wire sub-shield 6 or braiding copper wire sub-shield 6.Referring to Fig. 1, carry ground core 11 in the copper wire sub-shield 6 secretly.

Claims

1. a 35kV reaches with lower pressure wind energy cable, it comprises conductor (1), it is characterized in that: conductor (1) adopts the bundle stranded wire to twist again and forms, the outer wrapped transition resistance of conductor (1) is not more than the high temperature resistant semiconductive nylon tapes of 50 Ω (2), the three-layer co-extruded disposable conductor shield (3) that extrudes of the outer employing of semiconductive nylon tape (2), Ethylene Propylene Terpolymer insulating barrier (4) and insulation screen (5), insulation screen (5) is outer to be dredged around copper wire sub-shield (6), the outer copper strip shielding layer (7) of tightening of copper wire sub-shield (6) consists of insulated wire cores; Between the three eradication edge cores semiconductive packing (8) is arranged, three thoroughly do away with the edge core to be not more than 12 times of stranded formation cable cores of lay ratio, the mylar tape (9) of the outer wrapped high slipping property of cable core, the outer oversheath (10) that extrudes of mylar tape (9).

2. 35kV according to claim 1 reaches with lower pressure wind energy cable, it is characterized in that: described edge screen (5) is outer to be dredged around copper wire sub-shield (6) or braiding copper wire sub-shield (6).

3. 35kV according to claim 2 reaches with lower pressure wind energy cable, it is characterized in that: carry ground core (11) in the described copper wire sub-shield (6) secretly.