CN101923916A

CN101923916A - Variable frequency power generator cable with control wire core

Info

Publication number: CN101923916A
Application number: CN 201010166351
Authority: CN
Inventors: 虞洪宝; 张飞
Original assignee: XINGLE GROUP NINGXIA CABLE CO Ltd
Current assignee: XINGLE GROUP NINGXIA CABLE CO Ltd
Priority date: 2010-05-10
Filing date: 2010-05-10
Publication date: 2010-12-22

Abstract

The invention discloses a variable frequency power generator cable with a control wire core, which comprises three power wire cores, three earthing wire core conductors, three control wire cores and a rubber protection cover, a cable core consists of the power wire cores, the earthing wire core conductors and the control wire cores, the rubber protection cover is used for wrapping the cable core consisting of the power wire cores, the control wire cores and the earthing wire core conductors, each power wire core comprises a power wire core conductor as well as an insulation layer and a shielding layer which sequentially wrap the power wire core conductor, each control wire core comprises a control wire core conductor as well as an insulation layer and a shielding layer which sequentially wrap the control wire core conductor, and each control wire core is adjacent to two power wire cores of the three power wire cores and is opposite to the other power wire core.

Description

A kind of band control core variable frequency power generator cable

Technical field:

The invention belongs to the technology of transmission of electricity field, particularly a kind of band control core variable frequency power generator cable.

Background technology:

Please be simultaneously referring to Fig. 1, existing band control core variable frequency power generator cable 10 comprises power core 11, earth connection core conductor 13 and the rubber protective sleeve 14 that is used to wrap up power core 11 and earth connection core conductor 13; Wherein, power core 11 comprises power line core conductor 111, is wrapped in insulating barrier 112, screen 113 on the power line core conductor 111 successively; When under wind-driven generator frequency conversion state, working, cable 10 is subjected to the induced harmonics influence that the wind-force frequency conversion generator produces, the harmonic voltage that the power core 11 of cable 10 is produced surpasses the rated value of itself, causes power core 11 breakdown easily, and then cable 10 is damaged.

Summary of the invention:

In view of this, be necessary to provide a kind of band control core variable frequency power generator cable that can effectively reduce the harmonic voltage of power core generation.

A kind of band control core variable frequency power generator cable comprises three power cores, three earth connection core conductors, three control cores and rubber protective sleeve; This power core, earth connection core conductor and control core are formed cable conductor; This rubber protective sleeve is used to wrap up the cable conductor that this power core, control core and earth connection core conductor are formed; This power core comprises the power line core conductor and is wrapped in insulating barrier and screen on the power line core conductor successively; This control core comprises the control line core conductor and is wrapped in insulating barrier and screen on the control line core conductor successively, and two power cores in each control core and three the power cores are adjacent, and faces with another one power core.

Utilize above-mentioned band control core variable frequency power generator cable, because these three control cores can be used as earth connection, and two power cores in each control core and three the power cores are adjacent, and face with another one power core, that is, power core, control core adopt the even distribution form of triangle, make power core, control core form the balanced, symmetrical structure, and then have reduced the harmonic voltage that the power line in-core produces.

Description of drawings:

Accompanying drawing 1 is the cross sectional representation of cable in the prior art

Accompanying drawing 2 is band control core variable frequency power generator cable cross-sectional structure schematic diagrames of a better embodiment

Among the figure: band control core variable frequency power generator cable 10; power core 11; power line core conductor 111; insulating barrier 112; screen 113; earth connection core conductor 13; rubber protective sleeve 14; band control core variable frequency power generator cable 20; power core 21; power line core conductor 211; insulating barrier 212; screen 213; earth connection core conductor 22; control core 24; control line core conductor 241; insulating barrier 242; screen 243; rubber protective sleeve 23; semi-conductive cloth tape layer 25; total metal screen layer 26

Embodiment:

As shown in Figure 2, band control core variable frequency power generator cable 20 comprises three power cores 21, three earth connection core conductors 22, rubber protective sleeve 23, three controls core 24, semi-conductive cloth tape layer 25 and total metal screen layers 26.

Two power cores 21 in each control core 24 and three the power cores 21 are adjacent, and face with another one power core 21; Control cores 24 in power core 21 in each ground connection core 22 and three the power cores 21 and three the control cores 24 are adjacent.This

power core

21,25 one-tenth cable conductors of earth connection core conductor 22 and control core group; The wrapped successively outward semi-conductive cloth tape layer 25 of cable conductor and total metal screen layer 26 extrude rubber protective sleeve 23 outside total metal screen layer 26; Wherein, this total metal screen layer 26 is the copper wire braid, and this rubber protective sleeve 23 is the high flame retardant neoprene, and for example, the high flame retardant neoprene can be high flame retardant chlorine sulphur polyethylene, high flame retardant (CPE) haloflex etc.

Further, this power core 21 comprises that power line core conductor 211 reaches insulating barrier 212, the screen 213 that is wrapped in successively on the power line core conductor 211.For example, power line core conductor 211 can form by stranded copper wire is stranded, and the insulating barrier of parcel power line core conductor 211 212 is made by ethylene-propylene rubber; This control core 24 comprises that control line core conductor 241 reaches insulating barrier 242, the screen 243 that is wrapped in successively on the control line core conductor 241.Wherein, be wrapped in that insulating barrier 242 is copper plastics composite band on the control line core conductor 221, screen 243 is the tight braid of copper wire.

Utilize above-mentioned band control core variable frequency power generator cable 20, because these three control cores 24 can be used as earth connection, and two power cores 21 in each control core 24 and three the power cores 21 are adjacent, and face with another one power core 21, that is, power core 21, control core 24 adopt the even distribution form of triangle, make power core 21, control core 24 form the balanced, symmetrical structure, and then the harmonic voltages that produce in the reduction power core 21, thereby protected cable 20, improved anti-riot, the overload performance of cable 20 simultaneously; In addition, be provided with total metal screen layer 26 between semi-conductive cloth tape layer 25 and rubber protective sleeve 23, the harmonic wave that total metal screen layer 26 can shielded type cable 20 produces so can reduce wind-driven generator influence to external world, ensures the wind-driven generator safe operation.

Claims

1. a band is controlled the core variable frequency power generator cable, comprise three power cores (21), earth connection core conductor (22) and rubber protective sleeve (23), this power core (21) comprises that power line core conductor (211) reaches the insulating barrier (212) that is wrapped in successively on the power line core conductor (211), screen (213), it is characterized in that: this wind-driven generator cable also comprises three control cores (24), this power core (21), earth connection core conductor (22) and control core (24) are formed cable conductor, and this rubber protective sleeve (23) is used to wrap up this power core (21), the cable conductor that control core (24) and earth connection core conductor (22) are formed; This control core (24) comprises that control line core conductor (241) reaches insulating barrier (242), the screen (243) that is wrapped in successively on the control line core conductor (241), two power cores (21) in each control core (24) and three the power cores (21) are adjacent, and face with another one power core (21).

2. according to the described band control of claim 1 core variable frequency power generator cable, it is characterized in that: this band control core variable frequency power generator cable also comprises semi-conductive cloth tape layer (25), total metal screen layer (26); Wrapped successively this semi-conductive cloth tape layer (25) and total metal screen layer (26) extrude rubber protective sleeve (23) outside total metal screen layer (26) outside the cable conductor of being made up of this power core (21), control core (24) and earth connection core conductor (22).