CN203338837U

CN203338837U - High-performance construction cable

Info

Publication number: CN203338837U
Application number: CN2013203781723U
Authority: CN
Inventors: 潘茂龙; 宋怀旭; 范晓玲; 王秀玉
Original assignee: SHANDONG HUALING CABLE CO Ltd
Current assignee: SHANDONG HUALING CABLE CO Ltd
Priority date: 2013-06-27
Filing date: 2013-06-27
Publication date: 2013-12-11
Anticipated expiration: 2023-06-27

Abstract

The utility model discloses a high-performance construction cable The utility model solves the problems of low flame resistance, poor weatherability and short service life of the conventional construction cable, and the high-performance construction cable provided by the utility model has the advantages of environment friendship, flame retardation, waterproof and moistureproof properties, good anti-interference performance, superior electrical properties and long service life. The construction cable comprises a cable core, and is formed in a manner that the cable core is composed of a plurality of insulating wire cores arranged in a filling body; each insulating wire core includes a conductor and a double-layer co-extrusion heterogeneous insulating layer extruded outside the conductor; and the wire core is sequentially coated with a wrapping layer, a cable shielding layer, an oxygen barrier layer, an armor layer and a cable jacket from internal to external.

Description

The high-performance building cable

Technical field

The utility model relates to a kind of cable, relates in particular to a kind of test method and Arrhenius model inference according to the IEC60216-1:2001 regulation and goes out cable at 85 ℃ of high-performance building cables that reach 76.2 lower useful life.

Background technology

Current cable for building mostly is the individual layer insulation, uses polyvinyl chloride or crosslinked polyetylene insulated, and its electric performance stablity is poor, poor anti jamming capability, inflammable (easily spontaneous combustion), easily aging, scratch easy to wear, be afraid of moistly, produce thick smoke severe toxicity during burning and exist potential safety hazard, particularly useful life short, can't reach and the same equivalent life of building, and secondary wiring replacement cost is high, and building is stayed to potential safety hazard, building was died young in the thirty years of age.

Chinese patent CN202720937U discloses a kind of skyscraper suspension type installing cables, comprises cable core, and the gap in cable core is provided with packed layer, extrudes successively inner covering, armour, oversheath outside cable core; Mainly be, be provided with three steel wire ropes in cable core.Its cable core is by several insulated wire cores and three stranded forming of steel wire rope; Described insulated wire cores is that the insulation outer with being extruded in conductor by conductor forms.But the cable that this patent is announced is individual layer insulation, and unshielded layer, electric performance stablity is poor, and ageing resistance and weatherability are poor, block water, moisture effect is bad, especially useful life short, be generally 20-40, can not reach and the same life-span of building.

Chinese patent CN201667252U discloses a kind of middle pressure drag and has fired fire-resistant environment-friendly type armoured power cable, comprise one or more cable core and coat the band (7) of whole cable cores, cable core comprises by inner and outer wrapped conductor (1), conductor screen (2), conductor insulation (3), insulation shielding (4) and metallic shield (5) successively; Be surrounded with the semiconductive band (7) that blocks water outside whole cable cores, the space between cable core and band (7) is filled with packing material (6); Be surrounded with water blocking layer (8) outside band (7), the outer oxygen barrier layer (9) that is surrounded with of water blocking layer (8), outer inner covering (10), anticorrosion steel band (11) and the sheath (12) of coating successively of oxygen barrier layer (9).But the cable conductor that this patent is announced does not adopt dissimilar materials double-layer coextrusion insulated, and ageing resistace is poor, and useful life is short, need to change 3 left and right of circuit for the building in 70 year useful life, spend a large amount of manpower and materials.

The utility model content

The purpose of this utility model, exactly for overcoming above-mentioned the deficiencies in the prior art, provides a kind of high-performance building cable, and this cable has environmental protection, fire-retardant, ageing-resistant performance, antijamming capability is strong, Stability Analysis of Structures, protection against the tide, block water, superior electrical property, particularly long service life.

For achieving the above object, the utility model adopts following proposal:

A kind of high-performance building cable, it comprises cable core, cable core is comprised of some insulated wire cores that are arranged in obturator, each insulated wire cores comprises the heterogeneous insulating barrier of double-layer coextrusion that conductor is outer with being extruded in conductor, and described cable core is coated with belting layer, cable shield, oxygen barrier layer, armour, cable jacket outward from inside to outside successively.

Comprise three insulated wire cores that twist together in described cable core.

The heterogeneous insulating barrier of described double-layer coextrusion is inner insulating layer and external insulation layer; Wherein, inner insulating layer is the IXPE insulating barrier, external insulation layer is the irradiated crosslinking low-smoke and halogen-free flame retardant polyolefin insulating barrier, inside and outside thickness of insulating layer ratio is 1:1, through testing and verification, when inside and outside thickness of insulating layer ratio is 1:1, insulation resistance and the fire resistance of insulated wire cores reach optimum efficiency; Heterogeneous insulation is extruded and is avoided having the impurity such as air, dust to sneak between insulation by double-layer coextrusion, makes the electrical property of product, ageing resistace more stable.

Described belting layer is the high flame retardant band, makes fire resistance more reliable.

Described cable shield is for pricking the vertical bag of line screen, and screen is aluminium-plastic tape.

Described cable oxygen barrier layer is halogen-free flameproof elasticity obturator, and oxygen index reaches 40, is extruded in the cable core outside.

Described armour is the galvanized steel strip armouring.

Described cable jacket adopts LSOH anti-flaming cross-linking radiation polyolefin to be prepared from.

The utility model is the high-performance building cable be applied in building, the internal layer of every eradication edge core conductor outer wall is the IXPE Insulation Material, improved the electrical property of product, reduced dielectric loss in use, make signal transmission more stable, reliable, thereby ensured effective transmission of cable; Skin is irradiated crosslinking low-smoke and halogen-free polyolefin insulation material, and it possesses excellent electrical property, high-low temperature resistant, useful life, mechanical and physical performance.Cable cover(ing) is low-smoke non-halogen flame-retardant cross-linking radiation polyolefin jacket material, and the characteristic such as protective cover material has that anti-cracking performance is excellent, thermal contraction is little, easy processing, taste are little, LSOH anti-flaming, the most important thing is that anti-environmental aging performance is high, long service life.

Tape for cables is the high flame retardant band, makes fire resistance more reliable.Cable shield employing aluminium-plastic tape bundle line is indulged and is wrapped, and makes product have shield effectiveness preferably, contains and moulds the band mechanical stress again, makes screen more firmly, reliably, the performances such as increase simultaneously blocks water, protection against the tide, and the bending property of enhancing product, be convenient to laying installation.

The beneficial effects of the utility model are: environmental protection, and fire-retardant, antijamming capability is strong, superior electrical property, resistance to ag(e)ing is good, long service life.The cable material therefor is all low-smoke non-halogen flame-retardant ep-type materials, in fire-retardant, guaranteed cable the feature of environmental protection, improved cable useful life.Insulation adopts double-layer coextrusion technology and irradiation crosslinking technological, and inside and outside insulation thickness ratio is 1:1, makes cable have more superior electrical property.Adopt the vertical bag of bundle line screen to make screen tightr, antijamming capability is strong, and moisture effect is better, and good bending property is convenient to laying installation.Oversheath adopts low-smoke non-halogen flame-retardant cross-linking radiation polyolefin jacket material, guarantees fire-retardant, the environmental-protecting performance of cable, makes the cable longer service life.

The accompanying drawing explanation

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

Wherein, 1. conductor, 2. inner insulating layer, 3. external insulation layer, 4. fill, 5. band, 6. screen 7. oxygen barrier layers, 8. armour, 9. oversheath.

Embodiment

Below in conjunction with accompanying drawing and embodiment, the utility model is described further.

In Fig. 1, cable core comprises three strand insulation high core conductors that are arranged in low-smoke non-halogen flame-retardant obturator 4; The outer wall of every eradication edge core conductor 1 all wraps up inner insulating layer 2 and external insulation layer 3 successively, and wherein inner insulating layer 2 is the IXPE insulating barrier; External insulation layer 3 is the irradiated crosslinking low-smoke and halogen-free polyolefin insulation layer, and inside and outside thickness of insulating layer ratio is 1:1, and through testing and verification, when inside and outside thickness of insulating layer ratio is 1:1, insulation resistance and the fire resistance of insulated wire cores reach optimum efficiency; Heterogeneous insulation is extruded and is avoided having the impurity such as air, dust to sneak between insulation by double-layer coextrusion, makes the electrical property of product, ageing resistace more stable.

Wrap up successively from inside to outside tape for cables 5, cable shield 6, cable oxygen barrier layer 7, cable sheath 8 and cable jacket 9 at the outer wall of filling 4.

Tape for cables layer 5 is the high flame retardant band, makes fire resistance more reliable.Cable shield, for pricking the vertical alclad plastic composite strip screen 6 of line, increases the cable shield effect, reduces bending radius, and waterproof, protection against the tide.Cable oxygen barrier layer 7 is low-smoke non-halogen flame-retardant elasticity obturator.Cable sheath 8 is the galvanized steel strip armouring.Cable jacket is low-smoke non-halogen flame-retardant cross-linking radiation polyolefin.

Although above-mentioned, by reference to the accompanying drawings embodiment of the present utility model is described; but be not the restriction to the utility model protection range; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection range of the present utility model.

Claims

1. a high-performance building cable, it is characterized in that, it comprises cable core, cable core is comprised of some insulated wire cores that are arranged in obturator, each insulated wire cores comprises the heterogeneous insulating barrier of double-layer coextrusion that conductor is outer with being extruded in conductor, and described cable core is coated with belting layer, cable shield, oxygen barrier layer, armour, cable jacket outward from inside to outside successively.

2. high-performance building cable as claimed in claim 1, is characterized in that, comprises three insulated wire cores that twist together in described cable core.

3. high-performance building cable as claimed in claim 1, is characterized in that, described tape for cables layer is the high flame retardant band.

4. high-performance building cable as claimed in claim 1, is characterized in that, described cable shield is for pricking the vertical bag of line screen, and vertical bag screen is aluminium-plastic tape.

5. high-performance building cable as claimed in claim 1, is characterized in that, described cable oxygen barrier layer is low-smoke non-halogen flame-retardant elasticity obturator.

6. high-performance building cable as claimed in claim 1, is characterized in that, described cable sheath is the galvanized steel strip armouring.

7. high-performance building cable as claimed in claim 1, is characterized in that, described cable jacket adopts low-smoke non-halogen flame-retardant cross-linking radiation polyolefin to be prepared from.

8. high-performance building cable as claimed in claim 1, is characterized in that, the heterogeneous insulating barrier of described double-layer coextrusion is inner insulating layer and external insulation layer; Wherein, inner insulating layer is the IXPE insulating barrier, and external insulation layer is the irradiated crosslinking low-smoke and halogen-free flame retardant polyolefin insulating barrier, and inside and outside thickness of insulating layer is than being 1:1.