CN203503382U

CN203503382U - Cable for electrical equipment

Info

Publication number: CN203503382U
Application number: CN201320601209.4U
Authority: CN
Inventors: 周建栋; 贾志广; 安晓明; 李志能; 颜亮利
Original assignee: GUANGDONG ZHONGDE CABLE CO Ltd
Current assignee: GUANGDONG ZHONGDE CABLE CO Ltd
Priority date: 2013-09-27
Filing date: 2013-09-27
Publication date: 2014-03-26
Anticipated expiration: 2023-09-27

Abstract

The utility model relates to a cable for electrical equipment. The structure of the cable for the electrical equipment includes a cable core, and a wrapping layer and an over sheath which sequentially wrap the cable core; the cable core includes an inner cable core and an outer cable core arranged at the outside of the inner cable core; the inner cable core includes insulation cores, PP reticular fiber ropes are filled among the insulation cores and at the periphery of the insulation cores, and each the insulation core includes an inner cable core wrapping layer, an inner shielding layer and an inner sheath layer which are sequentially arranged from inside and out; the outer cable core includes a first group of conductors and a second group of conductors, an outer shielding layer wraps the outside of the first group of conductors, and the first group of conductors and the second group of conductors are interlaced. Compared with the prior art, the cable for the electrical equipment has advantages of good shielding effect, high bendability, strong tear resistance and strong hydrolysis resistance, can satisfy that signals transmitted by the cable for the electrical equipment are real-time and accurate, and can adapt to applications in various places with high curvature and harsh work environments.

Description

A kind of electrical equipment cable

Technical field

The utility model relates to cable technology field, is specifically related to a kind of electrical equipment cable.

Background technology

At present, electrical equipment is generally with intelligent working equipment, this just needs cable that the control signal of control centre, measuring-signal or index signal are passed to intelligent working equipment, and then realize intelligentized operation, cable is to aim at the centralized control of electrical equipment and circuit cable that ad hoc various automatic controls or line traffic control instruction are handled.

Because electrical equipment is the various signals of transmission with the Main Function of cable, the core number of cable arranges more, and the electromagnetic induction that applied voltage capacitive coupling and electrical current between core produce, can make to produce electrostatic interference between the different cores in same cable.Therefore, electrical equipment has a great impact the antijamming capability tool of cable by the structural design of several insulated wire cores in cable and screen combination, and the whole interior structure of cable and lapping layer material improvement the bendability of cable, flexibility and mobility are all improved a lot, meet the requirement of electrical equipment to the real-time of cable transmission signal and accuracy, strengthen the serviceability of electrical equipment.

Utility model content

The purpose of this utility model is for deficiency of the prior art, and provide that a kind of shield effectiveness is good, bending property is high, the electrical equipment cable of tear-proof, hydrolysis.

The purpose of this utility model is achieved through the following technical solutions:

A kind of electrical equipment cable is provided, comprises cable core, be coated on the lapping layer outside described cable core and be coated on the oversheath of described lapping layer, described cable core comprises interior cable core and is arranged at described interior cable core outer cable core around;

Described interior cable core comprises the inner protective layer of some mutually stranded insulated wire cores and coated described insulated wire cores, the centre of the gap between described inner protective layer and described insulated wire cores and mutually stranded described insulated wire cores is all filled with PP reticular fibre rope, and described inner protective layer comprises interior core wrap, internal shield and inner restrictive coating from inside to outside successively;

Described outer cable core comprises a plurality of conductor groups, described conductor group comprises by the mutual stranded first conductor group forming of conductor of two coated insulation bodies with by the mutual stranded second conductor group forming of conductor of three coated insulation bodies, by described the first conductor group, be outwards coated with successively outer shielding layer, the first outer core wrap, the periphery of described the second conductor group is coated with the second outer core wrap, and described the first conductor group and described the second conductor group are interspersed.

Wherein, described internal shield is set to double-level-metal screen, and described double-level-metal screen comprises aluminium foil lapping layer and copper wire mesh braided layer, and described copper wire mesh braided layer is arranged on the periphery of described aluminium foil lapping layer.

Wherein, described outer shielding layer is set to single-layer metal screen, and described single-layer metal screen is set to aluminium foil lapping layer.

Wherein, the insulated wire cores of described interior cable core comprises core conductor and be extruded in the PVC insulating barrier outside described core conductor, and described core conductor is set to mutually stranded tinned copper wire.

Wherein, the conductor of described conductor group is set to mutually stranded tinned copper wire.

Wherein, described interior core wrap, the first outer core wrap and the second outer core wrap are PTFE Transposed wind layer.

Wherein, described oversheath is flame retarding polyether type PU.

Wherein, described inner restrictive coating is set to polyester insulated body.

The beneficial effects of the utility model:

A kind of electrical equipment cable of the present utility model, comprise cable core, be coated on the lapping layer outside cable core and be coated on the oversheath of lapping layer, cable core comprises interior cable core and is arranged at interior cable core outer cable core around, and interior cable core and twice stranding of outer cable core, make the overall structure of cable compacter; Interior cable core comprises the inner protective layer of some mutually stranded insulated wire cores and coated insulation core, the centre of the gap between inner protective layer and insulated wire cores and mutually stranded insulated wire cores is all filled with PP reticular fibre rope, and inner protective layer comprises interior core wrap, internal shield and inner restrictive coating from inside to outside successively; Outer cable core comprises a plurality of conductor groups, conductor group comprises by the mutual stranded first conductor group forming of conductor of two coated insulation bodies with by the mutual stranded second conductor group forming of conductor of three coated insulation bodies, by the first conductor group, be outwards coated with successively outer shielding layer, the first outer core wrap, the periphery of the second conductor group is coated with the second outer core wrap, and the first conductor group and the second conductor group are interspersed.Electrical equipment of the present utility model uses cable after adopting the dual shield structure of internal shield and outer shielding layer, make cable there is low electric capacity, the feature of low inductance, improved to external world or electric field that cable core electrical current produces, the shielding properties in magnetic field, simultaneously, adopt PTFE Transposed wind layer to be wound around wrap insulate core and conductor group, because PTFE film has good lubrification and thermal endurance, while making cable bend calmly, can be free to slide to disperse and reduce stress, pliability and the flexibility of cable have been increased, satisfy the demands the field of employment that bendability is very high, and when can avoid cable bend or being heated there is micro gap in screen, improve shield effectiveness, meet the requirement of electrical equipment to the real-time of control cables signal transmission and accuracy, strengthen the serviceability of electrical equipment.

Accompanying drawing explanation

Fig. 1 is the structural representation of cable for a kind of electrical equipment of the present utility model.

In Fig. 1, include:

Cable core 1;

Interior cable core 2;

Insulated wire cores 21, core conductor 211, PVC insulating barrier 212;

PP reticular fibre rope 22, interior core wrap 23, internal shield 24, inner restrictive coating 25;

Outer cable core 3;

The first conductor group 31, the outer core wrap 312 of outer shielding layer 311, first;

The outer core wrap 321 of the second conductor group 32, second;

Conductor 33;

Lapping layer 4;

Oversheath 5.

Embodiment

Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.

A kind of electrical equipment of the present utility model with cable as shown in Figure 1, comprises cable core 1, is coated on the lapping layer 4 outside cable core 1 and is coated on the oversheath 5 of lapping layer 4, and cable core 1 comprises interior cable core 2 and is arranged at interior cable core 2 outer cable core 3 around; In the present embodiment, cable core 1 consists of interior cable core 2 and outer cable core 3 twice stranding, makes its structure compacter and firm, when mobile, distribution of force is even, wherein oversheath 5 adopts flame retarding polyether type PU, thereby makes cable have good tear resistance and elasticity, and difficult quilt draws bad.

Interior cable core 2 comprises the inner protective layer of some mutually stranded insulated wire cores 21 and coated insulation core, the centre of the gap between inner protective layer and insulated wire cores 21 and mutually stranded insulated wire cores 21 is all filled with PP reticular fibre rope 22, and inner protective layer comprises interior core wrap 23, internal shield 24 and inner restrictive coating 25 from inside to outside successively; Outer cable core 3 comprises a plurality of conductor groups, conductor group comprises by the mutual stranded first conductor group 31 forming of conductor 33 of two coated insulation bodies with by the mutual stranded second conductor group 32 forming of conductor 33 of three coated insulation bodies, by 31 groups of the first conductors, be outwards coated with successively the outer core wrap 312 of outer shielding layer 311, first, the periphery of the second conductor group 32 is coated with the second outer core wrap 321, the first conductor groups 31 and the second conductor group 32 is interspersed.Wherein, internal shield 24 and outer shielding layer 311 form the dual shield structure of cable, not only effectively shield the Electric and magnetic fields outside cable, and shielded between interior cable core 2 and outer cable core 3 capacitive coupling producing because of electrical current or voltage, improved the shielding properties of Integral cable, interior core wrap 23 wherein, the first outer core wrap 312 and the second outer core wrap 321 are PTFE Transposed wind layer, PTFE Transposed wind layer is and tetrafluoroethene Transposed wind layer, it is extremely low that it has coefficient of friction, high temperature resistant and fire-retardant performance, and with extrude even thickness hard inner restrictive coating 25 common guarantee intensity and the pliability of cable, thereby while making cable bend, can mutually be free to slide to disperse to reduce stress, and then there is micro gap in screen when avoiding cable bend or being heated, improve shield effectiveness, simultaneously, the first outer core wrap 312 can also prevent the conducting of internal shield 24 and outer shielding layer 311 effectively, reduce the coefficient of friction between core, guarantee that cable has high bendability.

In the present embodiment, internal shield 24 is set to double-level-metal screen, double-level-metal screen comprises aluminium foil lapping layer and copper wire mesh braided layer, copper wire mesh braided layer is arranged on the periphery of aluminium foil lapping layer, the coverage rate of aluminium foil lapping layer is 100%, the coverage rate of copper wire mesh braided layer is 86%, and double-level-metal screen can shield the interference that the external world or outer cable core produce completely, adopts copper wire mesh braided layer to have advantages of that the cable of allowing is more mobile and crooked.

Concrete, outer shielding layer 311 is set to single-layer metal screen, and single-layer metal screen is set to aluminium foil lapping layer, and outer shielding layer 311 can shield the interference that the external world or interior cable core produce, and improves accuracy and the promptness of cable transmission signal.

In the present embodiment, the insulated wire cores 21 of interior cable core 2 comprises core conductor 211 and is extruded in the PVC insulating barrier 212 outside core conductor 211, and core conductor 211 is set to mutually stranded tinned copper wire; The conductor 33 of conductor group is set to mutually stranded tinned copper wire.Wherein tinned copper wire has non-oxidizability and increases thermal diffusivity, the useful life of improving cable.

Concrete, the material of oversheath 5 is set to flame retarding polyether type PU, it is photochromic that flame retarding polyether type PU is black Asia, there is the good physical and chemical performances such as good tear-proof, hydrolysis, antifungi, oil resistant, thereby make cable there is the performance of excellent elasticity and corrosion-resistant high-temperature and there is gratifying outward appearance.

Concrete, inner restrictive coating 25 is set to polyester insulated body, and polyester insulated body extrudes the inner restrictive coating that is even thickness and has certain degree of hardness, to guarantee the intensity of cable.

Above embodiment is only in order to the technical solution of the utility model to be described, but not restriction to the utility model protection range can be modified or be equal to replacement the technical solution of the utility model, and do not departed from essence and the scope of technical solutions of the utility model.

Claims

1. an electrical equipment cable, comprises cable core, is coated on the lapping layer outside described cable core and is coated on the oversheath outside described lapping layer, it is characterized in that: described cable core comprises interior cable core and is arranged at the outer cable core outside described interior cable core; Described interior cable core comprises the inner protective layer of some mutually stranded insulated wire cores and coated described insulated wire cores, the centre of the gap between described inner protective layer and described insulated wire cores and mutually stranded described insulated wire cores is all filled with PP reticular fibre rope, and described inner protective layer comprises interior core wrap, internal shield and inner restrictive coating from inside to outside successively;

Described outer cable core comprises a plurality of conductor groups, described conductor group comprises by the mutual stranded first conductor group forming of conductor of two coated insulation bodies with by the mutual stranded second conductor group forming of conductor of three coated insulation bodies, by described the first conductor group, be outwards coated with successively outer shielding layer, the first outer core wrap, the periphery of described the second conductor group is coated with the outer core lapping layer of the second cable, and described the first conductor group and described the second conductor group are interspersed.

2. a kind of electrical equipment cable requiring according to right 1, it is characterized in that: described internal shield is set to double-level-metal screen, described double-level-metal screen comprises aluminium foil lapping layer and copper wire mesh braided layer, and described copper wire mesh braided layer is arranged on the periphery of described aluminium foil lapping layer.

3. a kind of electrical equipment cable requiring according to right 1, is characterized in that: described outer shielding layer is set to single-layer metal screen, described single-layer metal screen is set to aluminium foil lapping layer.

4. a kind of electrical equipment cable requiring according to right 1, is characterized in that: the insulated wire cores of described interior cable core comprises core conductor and be extruded in the PVC insulating barrier outside described core conductor, and described core conductor is set to mutually stranded tinned copper wire.

5. a kind of electrical equipment cable requiring according to right 1, is characterized in that: the conductor of described conductor group is set to mutually stranded tinned copper wire.

6. a kind of electrical equipment cable requiring according to right 1, is characterized in that: described interior core wrap, the first outer core wrap and the second outer core wrap are PTFE Transposed wind layer.

7. a kind of electrical equipment cable requiring according to right 1, is characterized in that: described oversheath is flame retarding polyether type PU.

8. a kind of electrical equipment cable requiring according to right 1, is characterized in that: described inner restrictive coating is set to polyester insulated body.