CN203085199U

CN203085199U - Halogen-free low-smoke flame-retardant heat-resistance anti-interference instrument cable

Info

Publication number: CN203085199U
Application number: CN 201220747627
Authority: CN
Inventors: 韩惠福; 朱崤; 吕伟堂; 孙超南; 赵金磊; 鲁健康; 朱玉萍
Original assignee: SIAIT CABLE CO Ltd; ANHUI SIAIT CABLES GROUP Co Ltd
Current assignee: SIAIT CABLE CO Ltd; ANHUI SIAIT CABLES GROUP Co Ltd
Priority date: 2012-12-31
Filing date: 2012-12-31
Publication date: 2013-07-24
Anticipated expiration: 2022-12-31

Abstract

The utility model discloses a halogen-free low-smoke flame-retardant heat-resistance anti-interference instrument cable. An insulated wire core is formed by an oxygen free copper conductor and an irradiation cross-linked polyethylene insulation layer which is extruded on the conductor. Insulated wire cores are subjected to pair twisting or star quad to form a wire group which is overlapped and wrapped by a polyester tape, and then an oxygen free copper wire branch shielding layer is woven to form a shielding wire group. The branch shielding layer is overlapped and wrapped with a polyester tape. A cable core is formed by a plurality of shielding wire groups which are wrapped by the polyester tapes. A cable core gap is filled with a filling layer. The cable core is overlapped and wrapped by a polyester tape and is woven with an oxygen free copper wire total shielding layer which is wrapped by a polyester tape which is extruded with an inner sheath, the inner sheath is wound by an armor layer which is wrapped by a total wrapping layer, and the outermost layer of the cable is extruded with a thermoplastic flame-retardant outer sheath. The cable has excellent properties of halogen free, low smoke, flame retardant, heat resistance, anti-interference, corrosion resistance, tension and the like and can be widely applied to the instrument control and signal systems of petroleum, petrifaction, subway, high-rise buildings and crowded public places.

Description

The heat-resisting anti-interference instrument cable of LSOH anti-flaming

Technical field:

The utility model relates to the heat-resisting anti-interference instrument cable of a kind of LSOH anti-flaming.

Background technology:

Along with the raising of people's environmental consciousness and the quickening of Chinese society economic construction paces, the heat-resisting anti-interference instrument cable of LSOH anti-flaming is widely used in the blind controller system of important departments such as oil, petrochemical industry, skyscraper, subway, power plant, nuclear power station, tunnel and densely populated public place, when breaking out of fire, do not discharge corrosive gas during cable fire, and light transmission is good, rescue work is very helpful, can reduces casualties and damage to property to a great extent.

The development of the heat-resisting anti-interference cable of domestic LSOH anti-flaming is started late, the technical merit of each producer is uneven, add in recent years to fire-retardant, environmental protection requirement is more and more higher, cause many producers because technical force is limited, can not design, produce the heat-resisting anti-interference instrument cable product of the LSOH anti-flaming that satisfies specification requirement.This just requires producer must break through technology barriers, sets up the R﹠D team of oneself, develops out the product with independent intellectual property rights, like this, will drive the fast development of enterprise, will produce good society and economic benefit.

Summary of the invention:

For overcoming the defective of prior art, the purpose of this utility model is to provide a kind of LSOH anti-flaming heat-resisting anti-interference instrument cable, it has characteristics such as excellent Halogen, low cigarette, fire-retardant, heat-resisting, anti-interference, corrosion-resistant, tension, the instrument control and the signal system that can be widely used in oil, petrochemical industry, subway, skyscraper and densely populated public place, excellent product performance, and can produce good society and economic benefit.

The utility model technical solution problem adopts following technical scheme:

The heat-resisting anti-interference instrument cable of LSOH anti-flaming, constitute insulated wire cores by oxygen-free copper conductor and the IXPE insulating barrier that extrudes on conductor, insulated wire cores pair twist or star quad stranding are the line group, the line group adopts the overlapping wrapped wired group of lapping layer of polyester belt outward, online group of lapping layer is woven with the copper free wire sub-shield outward and forms the shielding conductor group, described sub-shield adopts overlapping second lapping layer that is surrounded with of polyester belt outward, be twisted into cable core by a plurality of shielding conductor groups that are provided with second lapping layer, the cable core gap is filled with inorganic paper string packed layer;

Adopt outside described cable core that polyester belt is overlapping to be surrounded with lapping layer in the cable core, be woven with the total screen of copper free wire, adopt outside described total screen that polyester belt is overlapping to be surrounded with lapping layer outside the cable core, be extruded with inner sheath, described inner sheath is wound with the seizing wire armour outward, outside described armour and adopt that fire-retardant band is overlapping to be surrounded with total lapping layer, the outermost layer of cable is extruded with the thermoplastic flame-proof oversheath.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

1, the utility model insulating barrier adopts 125 ℃ of IXPE after electron accelerator irradiation is crosslinked, and mechanical performance and heat resistance improve greatly, guarantees that cable has excellent heat-resisting and mechanical performance.Serviceability temperature reaches 125 ℃ simultaneously, compare with the general instrument cable, and the thermal endurance class height, rise appreciably useful life.

2, insulated wire cores pair twist pitch is controlled at below the 100mm in the utility model, and adjacent lines group pitch has nothing in common with each other, and has guaranteed the low inductance of cable, low capacitance characteristic, has guaranteed the reliability that signal transmits.

3, sub-shield and total screen all adopt copper free wire braid shielded structure in the utility model, and count can effectively stop the signal between the line group to disturb and outside signal interference all greater than 80%, plays good shield effectiveness.

4, the utility model adopts and twines seizing wire as armour, has improved the tensile property and the mechanical performance of cable greatly, has effectively protected the damage of inner sheath simultaneously, improves the useful life of cable.

5, extruding the inside and outside sheath of thermoplastic halogen-free and low-smoke high flame retardant polyolefin in the utility model is a kind of novel environment friendly fire proofing, have characteristics such as excellent low cigarette, Halogen, fire-retardant, heat-resisting, unleaded, floride-free, alkali-free, anticorrosion, satisfy instructions for use fully.

Description of drawings:

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

Number in the figure: 1 conductor, 2 insulating barriers, 3 line group lapping layers, 4 sub-shields, 5 second lapping layers, lapping layer in 6 packed layers, 7 cable cores, 8 total screens, the outer lapping layer of 9 cable cores, 10 inner sheaths, 11 armours, 12 total lapping layers, 13 oversheaths.

Below pass through embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.

Embodiment:

Embodiment: referring to Fig. 1, the heat-resisting anti-interference instrument cable of the LSOH anti-flaming of present embodiment, constitute insulated wire cores by oxygen-free copper conductor 1 and the IXPE insulating barrier 2 that extrudes on conductor, insulated wire cores pair twist or star quad stranding are the line group, the line group adopts the overlapping wrapped wired group of lapping layer 3 of polyester belt outward, the online group of lapping layer 3 outer copper free wire sub-shields 4 that are woven with form the shielding conductor group, sub-shield adopts overlapping second lapping layer 5 that is surrounded with of polyester belt outward, be twisted into cable core by a plurality of shielding conductor groups that are provided with second lapping layer, the cable core gap is filled with inorganic paper string packed layer 6.

Adopt outside cable core that polyester belt is overlapping to be surrounded with lapping layer 7 in the cable core, be woven with the total screen 8 of copper free wire, adopt outside total screen that polyester belt is overlapping to be surrounded with lapping layer 9 outside the cable core, be extruded with inner sheath 10, inner sheath is wound with seizing wire armour 11 outward, outside armour and adopt that fire-retardant band is overlapping to be surrounded with total lapping layer 12, the outermost layer of cable is extruded with thermoplastic flame-proof oversheath 13.

In concrete the enforcement, corresponding structure setting and material are selected to be respectively:

Conductor 1 is to adopt the oxygen-free copper conductor, and the conductor layer surface should bright and clean, no burr;

Insulating barrier 2 is to be extruded in the conductor that forms on the conductor by IXPE to extrude layer, and adopts electron irradiation crosslinked;

Line group lapping layer 3 adopts the high insulation of high temperature polyester belt overlapping wrapped;

Sub-shield 4 adopts the copper free wire braiding structure;

The second outer lapping layer 5 of sub-shield adopts the high insulation of high temperature polyester belt overlapping wrapped;

Packed layer 6 adopts the inorganic paper string packed layer of LSOH anti-flaming, fills closely knit, rounding;

It is overlapping wrapped that lapping layer 7 adopts the high insulation of high temperature polyester belt in the cable core;

Total screen 8 adopts the copper free wire braiding structure;

The outer lapping layer 9 of the cable core of total screen adopts the high insulation of high temperature polyester belt overlapping wrapped;

Inner sheath 10 adopts and extrudes thermoplastic halogen-free and low-smoke high flame retardant polyolefin;

Armour 11 adopts and twines the seizing wire structure;

Total lapping layer 12 adopts the halogen-free high flame-retardant band overlapping wrapped in the armour outside;

Oversheath 13 adopts and extrudes thermoplastic halogen-free and low-smoke high flame retardant polyolefin.

Claims

1. the heat-resisting anti-interference instrument cable of LSOH anti-flaming, it is characterized in that constituting insulated wire cores by oxygen-free copper conductor (1) and the IXPE insulating barrier (2) that extrudes on conductor, insulated wire cores pair twist or star quad stranding are the line group, the line group adopts the overlapping wrapped wired group of lapping layer of polyester belt (3) outward, the outer copper free wire sub-shield (4) that is woven with of online group of lapping layer (3) forms the shielding conductor group, described sub-shield adopts overlapping second lapping layer (5) that is surrounded with of polyester belt outward, be twisted into cable core by a plurality of shielding conductor groups that are provided with second lapping layer, the cable core gap is filled with inorganic paper string packed layer (6);

Outside described cable core, adopt the overlapping lapping layer in the cable core (7) that is surrounded with of polyester belt, be woven with the total screen of copper free wire (8), outside described total screen, adopt the overlapping lapping layer outside the cable core (9) that is surrounded with of polyester belt, be extruded with inner sheath (10), described inner sheath is wound with seizing wire armour (11) outward, outside described armour and adopt the overlapping total lapping layer (12) that is surrounded with of fire-retardant band, the outermost layer of cable is extruded with thermoplastic flame-proof oversheath (13).