CN105931709A

CN105931709A - Variable frequency cable

Info

Publication number: CN105931709A
Application number: CN201610415571.0A
Authority: CN
Inventors: 候远利
Original assignee: Guangxi Wang Lian Wire And Cable Co Ltd
Current assignee: Guangxi Wang Lian Wire And Cable Co Ltd
Priority date: 2016-06-14
Filing date: 2016-06-14
Publication date: 2016-09-07

Abstract

The invention discloses a variable frequency cable. The variable frequency cable comprises a cable core and dual insulating layers coating the periphery of the cable core, wherein the cable core comprises three groups of power wire cores; the sealed space formed by the inner sides of the three groups of power wire cores is filled with a semi-conductive filling core, while three neutral wire cores are uniformly distributed in the gaps outside the three groups of power wire cores to jointly form the cable core; the dual insulating layers comprise an inner insulating layer and an outer insulating layer, wherein the inner insulating layer is an irradiation crosslinking polyethylene insulating layer while the outer insulating layer is an irradiation crosslinking low-smoke zero-halogen polyolefin insulating layer; and the exteriors of the dual insulating layers are coated with a filling layer, a non-woven fabric wrapping layer, a shielding layer and a sheath in sequence. According to the variable frequency cable, the main wire cores and null lines are symmetrical in positions; due to the wire interchanging effect and the symmetrical balance, the interference can be reduced to the minimum; and in addition, the cable is high in strength, higher in compressive property, and suitable for power lines and power transmission and distribution lines with strict demand on the shielding performance.

Description

A kind of frequency-changing cable

Technical field

The present invention relates to a kind of frequency-changing cable.

Background technology

Frequency-changing cable is mainly used in the connection between converter and power supply, and conventional frequency-changing cable typically uses three Thoroughly do away with edge and the 3+3 structure of three zero line isosceles triangle arrangement formation, make cable have stronger proof voltage impact Property, it is possible to standing pulse voltage during frequent frequency conversion, along with the development of industrial technology, conventional inverter cable is Through the demand under certain environmental conditions can not be met, have a strong impact on the stable operation of system, as in hot conditions Under, the flame-retardant of conventional frequency-changing cable is poor, especially during breaking out of fire, and the line of conventional inverter cable Containing poison in the produced gas of cable crust burning, personnel are produced relatively major injury, the most fire-resistant frequency conversion Cable is under humid conditions, it is impossible to is effectively prevented moisture and laterally penetrates into inside it, causes damage, and Existing frequency-changing cable shielding outside electromagnetic interference and stably transmit the ability of signal and have to be strengthened.

Summary of the invention

The defect existed for above-mentioned background technology, the present invention provides a kind of frequency-changing cable.

For achieving the above object, the technical solution used in the present invention is: it includes cable core and cladding cable core periphery Double layer of insulation, cable core includes three groups of power wire core, inside three groups of power wire core constitute closing space in It is filled with semiconductive and fills out core, space is evenly equipped with outside three groups of power wire core three neutral cores and collectively forms cable Core, double layer of insulation is primary insulation and outer layer insulation, and wherein, primary insulation is that IXPE is exhausted Edge layer, outer layer insulation is irradiated crosslinking low-smoke and halogen-free polyolefin insulation layer, is coated with successively and fills out outside double layer of insulation Fill layer, nonwoven fabric belts lapping layer, screen layer, sheath.

Further, described woven shield is compiled by annealing copper wire or the tinned copper wire of a diameter of 0.2～0.4mm Knit and form.

The method have the advantages that master core of the present invention uses symmetrical structure with the position of zero line, by Effect and symmetrical balance thereof is exchanged in wire, can be by interference reduction to floor level, and intensity is higher, resists Pressure performance is more preferable, it is adaptable to shielding properties is required strict power line and electric line.

Accompanying drawing explanation

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation of the present invention.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.

As it is shown in figure 1, the present invention includes cable core and the double layer of insulation of cladding cable core periphery, cable core includes three groups Power wire core 1, is filled with semiconductive in the closing space constituted and fills out core inside three groups of power wire core 1, and three groups are moved Being evenly equipped with three neutral cores 2 outside line of force core in space and collectively form cable core, double layer of insulation is primary insulation 3 and outer layer insulation 4, wherein, primary insulation 3 is IXPE insulating barrier, and outer layer insulation 4 is irradiation Cross-linking low-smoke halogen-free polyolefin insulation layer, is coated with packed layer 5, nonwoven fabric belts wrapped successively outside double layer of insulation Layer 6, screen layer 7, sheath 8.Wherein, described woven shield is by a diameter of 0.2～the annealing of 0.4mm Copper wire or tinned copper wire braiding form；The conductor of described power wire core is contained within fibre bundle strengthening core.

The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in this Within bright protection domain.

Claims

1. a frequency-changing cable, it is characterised in that: include cable core and the double layer of insulation of cladding cable core periphery, Cable core includes three groups of power wire core, is filled with semiconductive and fills out inside three groups of power wire core in the closing space constituted Core, is evenly equipped with three neutral cores and collectively forms cable core, double layer of insulation in space outside three groups of power wire core For primary insulation and outer layer insulation, wherein, primary insulation is IXPE insulating barrier, outer layer insulation For irradiated crosslinking low-smoke and halogen-free polyolefin insulation layer, outside double layer of insulation, it is coated with packed layer, nonwoven fabric belts successively Lapping layer, screen layer, sheath.

Frequency-changing cable the most according to claim 1, it is characterised in that: described woven shield is by diameter Be 0.2～0.4mm annealing copper wire or tinned copper wire braiding form.