CN201796619U

CN201796619U - Antiflaming data cable

Info

Publication number: CN201796619U
Application number: CN2010205496481U
Authority: CN
Inventors: 钱俊; 张兴飞; 朱俊; 刘捷
Original assignee: Zhongli Technology Group Co Ltd
Current assignee: Jiangsu Zhongli Group Co Ltd
Priority date: 2010-09-30
Filing date: 2010-09-30
Publication date: 2011-04-13
Anticipated expiration: 2020-09-30

Abstract

The utility model relates to an antiflaming data cable which belongs to the technical field of electric wire and cable, comprises a cable core and an outer sheath, and is characterized in that: an antiflaming band is wrapped outside the cable core, a shielding layer is arranged outside the antiflaming band, and the outer sheath is arranged outside the shielding layer. For the technical scheme provided by the utility model, as the antiflaming band is wrapped outside the cable core, and the shielding layer is arranged between the antiflaming band and the outer sheath, not only ideal antiflaming effect is realized, and use safety can be guaranteed, but also good shielding effect is realized, and transmission effect can be ensured.

Description

Fire-retardant data cable

Technical field

The utility model belongs to technical field of electric wires and cables, is specifically related to a kind of fire-retardant data cable.

Background technology

Data cable is the transmission medium of at present known comparatively desirable broadband access network, it have low cost of manufacture, simple in structure, expandability good and be convenient to advantage such as network upgrade.About the technical information of data cable, can particularly be no lack of in the patent documentation at document report is arranged.The disclosed high-performance data cable of CN1299511A, material by choose reasonable packing material, insulating material, sheath material and conductor and physical size make between the parameter that influences impedance, near-end cross and fade performance and obtain balance, the generation of the situation of avoiding attending to one thing and lose sight of another; The high-speed data cable with individually shielded twisted pairs that CN1183553C provides has and prevents that displacement, wrinkling advantage from appearring in radome in manufacturing, installation and use; The high-performance data cable that CN1624814A recommends has achievement to stability of structure, and is soft, flexible and to be convenient to lay be its advantage; A kind of new structure data cable that CN2896455Y discloses can avoid produce with construction in cause line to staggering each other between the insulated electric conductor group in (separating) and prevent the mutual extrusion transposition and influence the strong point of original pitch (the pitch change greatly); The indoor and outdoor high-performance data cable that CN200993895Y discloses has light weight, tensile property, softness, moistureproof moisture-proof characteristic and the good characteristics of shield effectiveness; The public all a kind of star quad stranding type data cables of CN201081801Y have the effect of improvement to mechanical strength and withstand voltage properties; The armored data cable of CN101174495A instruction is applicable to that because of having anti-pressure, radiation proof and mouse bite preventing the field lays; The network data cable peculiar to vessel that CN201122460Y recommends has solved the problem of the computer network on modernized boats and ships and naval vessel with line; The high-performance data cable that CN201194183Y releases is suitable for the use of major and minor mains system in building and open office system; The 10G Ethernet that CN201259799Y advocates can solve the cross talk effects between the group of electric wire with shielding symmetric data cable; The high speed parallel symmetric data cable that CN101447254A proposes has positive effect for improving characteristic impedance and reduction decay and loop loss, or the like, or the like.

The above-mentioned common problem of losing anti-flammability by the disclosed data cable existence of patent documentation, known, along with the whole society's improving constantly to the attention degree of safety and environmental protection, for the occasion such as skyscraper, public venue, public entertainment facility, subway, station, airport and oil, medication chemistry and even nuclear power station etc., the common data cable that does not have fire resistance will be faded out gradually.Therefore the exploitation data cable that not only had desirable flame retardant effect but also had an excellent shield effectiveness has crucial meaning.For this reason, the applicant has carried out good try, and technical scheme described below produces under this background.

Summary of the invention

Task of the present utility model is to provide a kind of both to have been had excellent flame-retardant performance and uses and guarantee safe in utilizationly, had desirable shielding again and used the fire-retardant data cable that ensures laser propagation effect.

Task of the present utility model is finished like this, and a kind of fire-retardant data cable comprises cable core and oversheath, is characterised in that: the inhibiting tape that outside described cable core, has been wrapped, be outside equipped with screen at inhibiting tape, and described oversheath is positioned at outside the screen.

In a specific embodiment of the present utility model, described inhibiting tape is a low-smoke non-halogen flame-retardant glass fabric band.

In another specific embodiment of the present utility model, described screen comprises the mask tape and by the shielding net of metal wire knitted, wherein: the shielding net of metal wire knitted is positioned at outside the mask tape, and described oversheath is positioned at outside the shielding net of metal wire knitted.

In another specific embodiment of the present utility model, described mask tape is the mask tape that single face is compounded with aluminium foil layer, and wherein, the thickness of mask tape is 0.05-0.15mm.

In another specific embodiment of the present utility model, described wire is the copper wire of diameter 0.10-0.16mm.

Also have in the specific embodiment of the present utility model, the thickness of described inhibiting tape is 0.18-0.22mm, and the packet stack rate of inhibiting tape is＞25%.

More of the present utility model and in specific embodiment, each is by pair of conductors with squeeze and overlay on the outer conductor lines that is constituted by insulating layer coating of each conductor to constituting by one group for described cable core.

In of the present utility model and then specific embodiment, described conductor lines is stranded each other, and all conductor lines between multiple mutually strand, wherein, the multiple strand direction of multiple strand is opposite with stranded direction.

Of the present utility model again more and in specific embodiment, described is high density polyethylene (HDPE) by the material of insulating layer coating.

In again of the present utility model and then specific embodiment, described oversheath is a flame-proof polyvinyl chloride.

The technical scheme that the utility model provides is because the inhibiting tape that has been wrapped outside cable core, and between inhibiting tape and oversheath, be provided with screen, therefore both had desirable flame retardant effect and can ensure the fail safe of use, and had good shield effectiveness again and guarantee laser propagation effect.

Description of drawings

Fig. 1 is a specific embodiment structure chart of the present utility model.

Embodiment

Ask for an interview Fig. 1, the cable core 1 that provides both can be by few to several, also can be by tens of as many as and even dozens of, also can constitute 11 by the conductor lines of as many as more up to a hundred (being 128 usually to the maximum), each conductor lines to 11 each by pair of conductors 111 and squeeze overlay on each conductor 111 outer by being constituted that high-density polyethylene material is filled the post of by insulating layer coating 112, earlier each conductor lines self is carried out stranded (promptly from strand) to 11, then all conductor lines are twisted each other again to 11, the direction of multiple strand is opposite with direction of lay, thereby constitutes cable core 1.

The inhibiting tape 2 that outside cable core 1, is wrapped, inhibiting tape 2 is a low-smoke non-halogen flame-retardant glass fabric band, perhaps uses the polyester band with environmental-protecting performance, the preferred thickness of inhibiting tape is 0.18-0.22mm, being 0.19-0.21mm preferably, is 0.22mm better, and present embodiment is selected 0.2mm.And the packet stack rate of inhibiting tape 2 is＞25%, preferably, packet stack rate is chosen as 25-50%, is chosen as 30-40% better, and present embodiment is chosen as 35% with packet stack rate.

Screen 3 is set outside inhibiting tape 2, and screen 3 comprises mask tape 31 and shielding net 32, and mask tape 31 is coated on outside the inhibiting tape 2 with straight packet mode, and shielding net 32 is positioned at outside the mask tape 31.In the present embodiment, mask tape 31 adopts single face to be compounded with the mask tape (being single face aluminum foil shielded band) of aluminium foil layer 311, and wherein: aluminium foil layer 311 outward.Shielding net 32 is that the copper wire braiding of 0.10-0.16mm (present embodiment select 0.13mm) forms by diameter and count is＞40% shielding net.Wherein, the thickness of aforesaid mask tape 31 is 0.065mm, and the thickness of aluminium foil layer 311 is 0.032mm, constitutes screen 3 by mask tape 31 jointly with shielding net 32 and has desirable shield effectiveness.

The technology of being habitually practised with the electric wire processing industry outside shielding net 32 is squeezed and is covered the oversheath of being taken on by flame-proof polyvinyl chloride 4.For prior art, can show desirable fire resistance by the resulting fire-retardant data cable of present embodiment, very be suitable for applicant's mentioned applications in the background technology hurdle.

Claims

1. a fire-retardant data cable comprises cable core (1) and oversheath (4), it is characterized in that: the inhibiting tape (2) that outside described cable core (1), has been wrapped, be outside equipped with screen (3) at inhibiting tape (2), and described oversheath (4) is positioned at outside the screen (3).

2. fire-retardant data cable according to claim 1 is characterized in that described inhibiting tape (2) is a low-smoke non-halogen flame-retardant glass fabric band.

3. fire-retardant data cable according to claim 1, it is characterized in that described screen (3) comprises mask tape (31) and by the shielding net (32) of metal wire knitted, wherein: the shielding net (32) of metal wire knitted is positioned at outside the mask tape (31), and described oversheath (4) is positioned at outside the shielding net (32) of metal wire knitted.

4. fire-retardant data cable according to claim 3 is characterized in that described mask tape (31) is compounded with the mask tape (11) of aluminium foil layer (311) for single face, and wherein, the thickness of mask tape (31) is 0.05-0.15mm.

5. fire-retardant data cable according to claim 3 is characterized in that described wire is the copper wire of diameter 0.10-0.16mm.

6. fire-retardant data cable according to claim 1 and 2, the thickness that it is characterized in that described inhibiting tape (2) is 0.18-0.22mm, and the packet stack rate of inhibiting tape (2) is＞25%.

7. fire-retardant data cable according to claim 1 is characterized in that described cable core (1) respectively is made of (11) pair of conductors (111) and the crowded outer conductor lines that is constituted by insulating layer coating (112) of each conductor (111) that overlays on by one group.

8. fire-retardant data cable according to claim 7 is characterized in that described conductor lines (11) is stranded each other, and all conductor lines are to mutually multiple strand between (11), and wherein, the multiple strand direction of multiple strand is opposite with stranded direction.

9. fire-retardant data cable according to claim 7 is characterized in that described material by insulating layer coating (112) is a high density polyethylene (HDPE).

10. according to claim 1 or 3 described fire-retardant data cables, it is characterized in that described oversheath (4) is a flame-proof polyvinyl chloride.