CN203673858U

CN203673858U - Copper-shielded interlocking armored frequency converter cable

Info

Publication number: CN203673858U
Application number: CN201420003041.1U
Authority: CN
Inventors: 曲志勇
Original assignee: GUANGDONG JINHUA CABLE Co Ltd
Current assignee: GUANGDONG JINHUA CABLE Co Ltd
Priority date: 2014-01-03
Filing date: 2014-01-03
Publication date: 2014-06-25
Anticipated expiration: 2024-01-03

Abstract

The utility model relates to the field of cables, and specifically relates to a copper-shielded interlocking armored frequency converter cable. The cable comprises a cable core, a wrapping layer, a general shielding layer, an armored layer and an outer sheath in sequence from the inside to the outside, the cable core comprises three primary core wires and three auxiliary core wires, each primary core wire comprises a conductor, an insulating layer and a sub-shielding layer in sequence from the inside to the outside, the auxiliary core wire comprises a conductor and an insulating layer, the general shielding layer is woven by a copper wire or a copper strip, the cable core is coated or wrapped by the general shielding layer, and the armored layer is an interlocking armor formed by the spiral concentric wrapping of an aluminum alloy strip. According to the cable, the multi-shielding and interlocking armored structure and low-smoke, halogen-free and flame retardation materials are adopted so that the cable is advantaged by excellent electromagnetic wave resistant ability, strong tensile and anti-compression ability, fireproof ability, low smoke, and halogen free, the usage security of the cable is improved, and the cable can be used in a harsh condition.

Description

A kind of copper shield lock armo converter cable

Technical field

The utility model relates to field of cables, relates in particular to a kind of copper shield lock armo converter cable.

Background technology

Special cable for frequency converter, to be applicable to the cable of powering or being electrically connected in frequency-changing control system, must there is stronger proof voltage impact, pulse voltage can stand frequency conversion time, must there is good shielding simultaneously, can effectively eliminate electromagnetic interference, reduce variable-frequency motor noise, ensure system stable operation.The anti-electromagnetic wave of Special cable for frequency converter disturbs and mechanical protection performance is the key factor that affects cable serviceability, this cable using under special occasions should have excellent anti-electromagnetic wave ability and stronger tension anti-pressure ability simultaneously, common cable cannot meet this requirement naturally, and existing most Special cable for frequency converter also cannot have excellent anti-electromagnetic wave ability and stronger tension anti-pressure ability simultaneously.

Utility model content

The purpose of this utility model is to provide a kind of copper shield lock armo converter cable, to solve the problem that existing converter cable is anti-interference and mechanical performance is poor.

In order to realize above-mentioned object, adopt following technical scheme: a kind of copper shield lock armo converter cable, described cable comprises cable core, belting layer, total screen, armour and oversheath from inside to outside successively, described cable core comprises three main heart yearns and three secondary heart yearns, main heart yearn comprises conductor, insulating barrier and sub-shield from inside to outside successively, secondary heart yearn comprises conductor and insulating barrier, described total screen is that copper wire or copper strips braiding are coated or wrapped outside cable core, and described armour is the aluminum alloy strip spiral wrapped lock armo forming with one heart.Main heart yearn is that isosceles triangle distributes, and secondary heart yearn is arranged between main heart yearn and belting layer.The utility model adopts the double-layer shielding structure of total screen and sub-shield, can increase the effect of shielding, thereby improves anti-electromagnetic wave ability.Armour is that the concentric wrapped mode of hurricane band that is S shape by a sliver transvers section realizes; can overcome the armoring tapes such as common steel band, aluminium strip and overlap wrapped deficiency; the effect that existing protection cable is not wounded, damaged; also there is the effect of secondary shield; in improving tension anti-pressure ability, also can further increase the effect of shielding.

Described secondary heart yearn also comprises sub-shield, and the sub-shield of described main heart yearn and secondary heart yearn is copper wire or copper strips braiding is coated or wrapped outside insulating barrier.Secondary heart yearn also arranges sub-shield, further improves antijamming capability.Copper wire or copper strips have non magnetic, as total screen and sub-shield, can eliminate the galvanomagnetic effect of electric field, prevent reactance, prevent that external signal from producing and disturbing frequency converter, also can effectively prevent that the high-frequency signal that frequency converter produces from causing interference to other equipment.

Described conductor is many stranded the forming of copper cash, adopts circle to press structure.

Described insulating barrier is that irradiation type low-smoke halogen-free flame-retardant isolating material is extruded on conductor, and described restrictive coating is that low-smoke halogen-free flame-retardant sheath material is extruded on armour.Adopt halogen-free low-smoke flame retardant material, make cable there is fire-resistant function, also can further increase the effect of shielding, there is the environment protecting of low smoke and zero halogen simultaneously.

Compared with prior art, the utility model is by adopting multiple shield, chain sheathed structure and halogen-free low-smoke flame retardant material, make cable there is the feature of excellent anti-electromagnetic wave ability, stronger tension anti-pressure ability, refractory ability and low smoke and zero halogen simultaneously, increase the safety in utilization of cable, cable can be used under harsh condition.

Brief description of the drawings

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

Embodiment

Below in conjunction with accompanying drawing, the utility model will be further described.

Structure of the present utility model as shown in Figure 1, comprise by three main heart yearns and three cable core, belting layer 4, total screen 5, armour 6 and oversheaths 7 that secondary heart yearn forms, main heart yearn comprises conductor 1, insulating barrier 2 and sub-shield 3, and secondary heart yearn comprises conductor 1 and insulating barrier 2.

Production of the present utility model comprises the following steps:

S1. the production of conductor 1 completes on frame type stranding machine, conductor strandedly press rounding, without burr, blackout oxidation etc.;

S2. insulating barrier 2 adopts low-smoke halogen-free flame-retardant isolating material, on 100 warm water crosslinking machines, be extruded on conductor 1, produce and be cross-linked through the irradiation of ultraviolet light irradiation equipment again, the structure of crosslinked later insulating material is become netted by linear structure, have low cigarette, Halogen, fire-resistant nontoxic feature;

S3. wrapped shielding is put up in the main heart yearn process proof copper-wire braided shielding after irradiation, or copper strips winding machine, forms sub-shield 3, and while adopting brass wire shielding, the rate of putting up is not less than 90%, the necessary annealed electrician's copper of required copper wire or copper strips;

S4. by three main heart yearns and three secondary heart yearn composition cable cores, on 1600 type cablers, carry out stranding, do not add filling, the outer wrapped two-layer PE twining package tape of cable core, forms belting layer 4,0.5 millimeter of tape thickness, the wrapped rate 50% of putting up;

S5. by good stranding cable core through proof copper-wire braided shielding, or copper strips winding machine puts up wrapped shielding, forms total screen 5, while adopting proof copper-wire braided always to shield, the rate of putting up is not less than 85%, while adopting copper strip shielding, the rate of putting up is not less than 15%;

S6. carry out aluminum alloy strip lock armo, on lock armo machine, carry out, aluminum alloy strip spirality is wrapped outside total screen, all linked with one another, forms armour 6;

S7. carry out the extruder processing of oversheath 7, oversheath is low-smoke halogen-free flame-retardant sheath material.

Compressive property of the present utility model can resistance to 0.4MP pressure can not be out of shape, the requirement of the index symbol category-A fire-resisting cable of low smoke and zero halogen, shielding rejection coefficient is no more than 0.01.

The above is only preferred embodiment of the present utility model.Should be understood that for member of ordinary skill in the art, under technology enlightenment provided by the utility model, can also make other equivalent modifications or improvement, also should be considered as protection range of the present utility model.

Claims

1. a copper shield lock armo converter cable, it is characterized in that, described cable comprises cable core, belting layer, total screen, armour and oversheath from inside to outside successively, described cable core comprises three main heart yearns and three secondary heart yearns, main heart yearn comprises conductor, insulating barrier and sub-shield from inside to outside successively, secondary heart yearn comprises conductor and insulating barrier, described total screen is that copper wire or copper strips braiding are coated or wrapped outside cable core, and described armour is the aluminum alloy strip spiral wrapped lock armo forming with one heart.

2. copper shield lock armo converter cable according to claim 1, is characterized in that, described secondary heart yearn also comprises sub-shield, and the sub-shield of described main heart yearn and secondary heart yearn is copper wire or copper strips braiding is coated or wrapped outside insulating barrier.

3. copper shield lock armo converter cable according to claim 1, is characterized in that, described conductor is many stranded the forming of copper cash, adopts circle to press structure.

4. according to the copper shield lock armo converter cable described in any one in claims 1 to 3, it is characterized in that, described insulating barrier is that irradiation type low-smoke halogen-free flame-retardant isolating material is extruded on conductor, and described restrictive coating is that low-smoke halogen-free flame-retardant sheath material is extruded on armour.