CN203799742U

CN203799742U - High-flexibility anti-deflection variable-frequency flexible cable

Info

Publication number: CN203799742U
Application number: CN201420163229.2U
Authority: CN
Inventors: 盛中红; 唐娟; 王玲姿; 孟清涛; 韩雯
Original assignee: WUXI HU'AN ELECTRONIC WIRE AND CABLE CO Ltd
Current assignee: Shanghai Hu an cable (Wuxi) Co., Ltd.
Priority date: 2014-04-04
Filing date: 2014-04-04
Publication date: 2014-08-27
Anticipated expiration: 2024-04-04

Abstract

The utility model discloses a high-flexibility anti-deflection variable-frequency flexible cable comprising a cable core that is formed by twisting of a plurality of power wire cores. A filling layer is arranged at the gap of the cable core; an isolation layer is arranged outside the cable core; a general shielding layer is arranged outside the isolation layer; and an external sheath is extruded at the outermost layer of the cable core. The power wire cores are formed by conductors, insulated layers, and split-phase shielding layers, wherein the insulated layers and the split-phase shielding layers are successively extruded outside the conductors. According to the scheme, the magnetic field that is generated around the current can be shielded in the cable and thus the interference on the external world can be prevented, so that sensitivity of the front-end protection device in a single-phase short circuit mode can be improved. The over-voltage phenomenon of the electromagnetic effect of the heavy lightning current can be eliminated; and the damage or breakdown of the insulation layers can be prevented.

Description

The anti-frequency conversion flexible cable that deflects of a kind of high flexibility

Technical field

The utility model belongs to power cable field, is specifically related to the anti-frequency conversion flexible cable that deflects of a kind of high flexibility.

Background technology

High speed development along with modern industry automatic high-speed control system, a series of other governing systems such as frequency control has advantages of speed-regulating range width, adjusting speed accuracy is high, through-put power is stable, high reliability, good energy-conserving effect can not be compared, thereby, at the every field variable-frequency control technique of modern industry, obtained application more and more widely.Special cable for frequency converter (abbreviation frequency-changing cable) is requisite significant components in the drive system that forms of frequency converter and supporting electric element, and common frequency-changing cable can not be useful in frequent bending and mobile occasion.

Utility model content

The purpose of this utility model is to provide the anti-frequency conversion flexible cable that deflects of a kind of high flexibility, electric current can be produced to magnetic field shielding in cable around, prevents from externally producing and disturbing, and improves the sensitivity of head end protective device when single-phase short circuit; The galvanomagnetic effect that can eliminate powerful lightning current produces overvoltage, can prevent the damage of insulating barrier or puncture.

A kind of high flexibility described in the utility model is anti-deflects frequency conversion flexible cable, comprises cable core, and its cable core is by many stranded the forming of power core; Cable core gap is provided with packed layer, and cable core is provided with separator outward, and separator is provided with total screen cable core outermost layer outward and extrudes oversheath; Described power core by conductor and the insulating barrier, the phase-splitting screen that are extruded in successively outside conductor form.

Further improve, described conductor adopts soft copper wire synnema to carry out the stranded conductor of multiple strand again, and strand twists again to identical with synnema direction.

Further improve, described phase-splitting screen and total screen adopt copper wire or tinned copper wire braiding to form.

The beneficial effects of the utility model are:

The one,, the utility model Cable Bending Radius can reach 3-5 times of the outside diameter of cable; The 2nd,, the utility model cable flexible comes and goes number of times higher than 50000 times, is specially adapted to frequent bending and mobile occasion; The 3rd,, electric current can be produced to magnetic field shielding in cable around, prevent from externally producing and disturbing, improve the sensitivity of head end protective device when single-phase short circuit; The 4th,, the galvanomagnetic effect that can eliminate powerful lightning current produces overvoltage, can prevent the damage of insulating barrier or puncture.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Embodiment

As shown in Figure 1, a kind of high flexibility described in the utility model is anti-deflects frequency conversion flexible cable, comprises cable core, and its cable core is by many stranded the forming of power core; Cable core gap is provided with packed layer 4, and cable core is provided with separator 5 outward, is provided with total screen 6 cable core outermost layers and extrudes oversheath 7 outside separator 5; Described power core consists of conductor 1 and the insulating barrier 2, the phase-splitting screen 3 that are extruded in successively outside conductor 1.

Described conductor 1 adopts soft copper wire synnema to carry out the strand stranded conductor forming again again, and strand twists again to identical with synnema direction; The lay ratio that the strand bundle of described conductor 1 closes is 12～14 times, and the lay ratio that strand twists is again 8～14 times, and outer lay ratio should be not more than internal layer lay ratio; Described phase-splitting screen 2 and total screen 6 adopt copper wire or tinned copper wire braiding to form.

The utility model provides a kind of high flexibility the anti-frequency conversion flexible cable that deflects; the above is only preferred implementation method of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvement, these improvement also should be considered as protection range of the present utility model.

Claims

1. high flexibility is anti-deflects a frequency conversion flexible cable, it is characterized in that, comprise cable core, its cable core is by many stranded the forming of power core; Cable core gap is provided with packed layer (4), and cable core is provided with separator (5) outward, is provided with total screen (6) cable core outermost layer and extrudes oversheath (7) outside separator (5); Described power core is by conductor (1) and be extruded in successively the outer insulating barrier (2) of conductor (1), phase-splitting screen (3) forms.

2. high flexibility according to claim 1 is anti-deflects frequency conversion flexible cable, it is characterized in that, described conductor (1) adopts soft copper wire synnema to carry out the strand stranded conductor forming again again, and strand twists again to identical with synnema direction.

3. high flexibility according to claim 2 is anti-deflects frequency conversion flexible cable, it is characterized in that, the lay ratio that the strand bundle of described conductor (1) closes is 12～14 times, and the lay ratio that strand twists is again 8～14 times, and outer lay ratio should be not more than internal layer lay ratio.

4. high flexibility according to claim 1 is anti-deflects frequency conversion flexible cable, it is characterized in that, described phase-splitting screen (2) and total screen (6) adopt copper wire or tinned copper wire braiding to form.