CN203351233U

CN203351233U - Environment-friendly type anti-interference instrument cable

Info

Publication number: CN203351233U
Application number: CN 201320210249
Authority: CN
Inventors: 孙超南; 任俊; 祖恩建; 胡成志; 彭鹏
Original assignee: ANHUI HAINA CABLE GROUP Co Ltd
Current assignee: ANHUI HAINA CABLE GROUP Co Ltd
Priority date: 2013-04-11
Filing date: 2013-04-11
Publication date: 2013-12-18
Anticipated expiration: 2023-04-11

Abstract

The utility model discloses an environment-friendly type anti-interference instrument cable. An insulated wire core is formed by a coalesced copper conductor, a synthesis mica tape fireproof layer winding on the conductor and an irradiated crosslinking polyethylene insulating layer extruded outside the fireproof layer, and the insulated wire cores form a wire group through pair twist or star-quad twist. The wire group is wrapped by a high-temperature highly insulated polyester belt, and a coalesced copper wire braided layer in an overlapping manner to form a shielding wire group, which is wound by high-temperature highly insulated polyester belt in an overlapping manner. A plurality of shielding wire group are twisted to form a cable core, and a halogen-free low-smoke flame-retardate filler layer is filled in the gaps within the cable core, which is wound by high-temperature highly insulated polyester belt in an overlapping manner. Coalesced copper wires are employed for braiding a general shielding layer, and the general shielding layer is wrapped up sequentially by halogen-free low-smoke flame-retardate glass fiber tapes in an overlapping manner, and extruded by a thermosetting irradiated crosslinking halogen-free low-smoke flame-retardate polyolefin oversheath. The instrument cable is halogen-free, low-smoke, flame-retardant, fireproof, corrosion-resistant and interference-resistant, and has excellent electrical and mechanical properties and environmental protection functions. The instrument cable can be widely applicable to instrument control and signal systems in petroleum and petrochemical fields and subways, high-rise buildings and densely-populated public places.

Description

The anti-interference instrument cable of a kind of environment-friendly type

Technical field

The utility model relates to the anti-interference instrument cable of a kind of environment-friendly type, belongs to technical field of electric wires and cables.

Background technology

Along with the raising of people's environmental consciousness and the quickening of Chinese society economic construction paces, the anti-interference instrument cable of the fire-resistant environment-friendly type of LSOH anti-flaming is widely used at oil, petrochemical industry, skyscraper, subway, power plant, nuclear power station, important department and the densely populated public place blind controller systems such as tunnel, when breaking out of fire, cable line can keep normal operation within a certain period of time, do not discharge corrosive gas during cable fire simultaneously, and light transmission is good, rescue work is very helpful, can reduce casualties and damage to property to a great extent.

The development of the fire-resistant anti-interference instrument cable of domestic LSOH anti-flaming environment-friendly is started late, the technical merit of each producer is uneven, add more and more higher to requirement fire-retardant, fire-resistant, environmental protection in recent years, cause many producers because technical force is limited, can not design, produce the fire-resistant anti-interference instrument cable product of the LSOH anti-flaming environment-friendly that meets specification requirement.This just requires the producer must the break-through skill barrier, sets up the R&D team of oneself, develops 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 defect of prior art, the purpose of this utility model is to provide a kind of environment-friendly type anti-interference instrument cable, there is excellent Halogen, low cigarette, the characteristic such as fire-retardant, fire-resistant, anti-interference, corrosion-resistant, can be widely used in oil, petrochemical industry, subway, skyscraper and the densely populated place instrument such as public place controls and signal system, excellent product performance, and can produce good society and economic benefit.

The utility model technical solution problem adopts following technical scheme:

The anti-interference instrument cable of a kind of environment-friendly type, form insulated wire cores by oxygen-free copper conductor, synthetic mica tape flame retardant coating and the IXPE insulating barrier that extrudes on flame retardant coating, insulated wire cores pair twist or star quad stranding are the line group, outer overlapping high-temperature high-insulation polyester belt, the copper free wire braid formation shielding conductor group of being surrounded with of line group, the line group is overlapping wrapped high-temperature high-insulation polyester belt more outward, be twisted into cable core by a plurality of shielding conductor groups, the cable core gap-fill has LSOH anti-flaming rope packed layer; The overlapping high-temperature high-insulation polyester belt that is surrounded with outside cable core, copper free wire braided overall-shielding layer, the overlapping halogen-free low-smoke high-flame glass fiber tape lapping layer that is surrounded with successively outside total screen, be extruded with thermosetting irradiation crosslinking halogen-free low smoke high flame retardant polyolefin oversheath.

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

1, in the utility model, fireprotection layer adopts synthetic mica tape wrapped, and its temperature resistant grade reaches 950 ℃, and, under 950 ℃ of flame conditions, cable can normally move 90 minutes, guarantees the normal operation of various control system, reduces unnecessary loss.

2, in the utility model, 125 ℃ of IXPE insulating barriers are after electron accelerator irradiation is crosslinked, and mechanical performance and heat resistance improve greatly, guarantee that cable has excellent heat-resisting and mechanical performance.Serviceability temperature reaches 125 ℃ simultaneously, with the general instrument cable, compares, and thermal endurance class is high, and rise appreciably useful life.

3, in the utility model, insulated wire cores pair twist pitch is controlled at below 90mm, different and an odd lot of adjacent lines group pitch doubly, prevent the phase mutual interference of cable in signals transmission, guaranteed the low inductance of cable, low capacitance characteristic, guaranteed the reliability and stability that signal transmits.

4, in the utility model, sub-shield and total screen all adopt copper free wire braid shielded structure, and count all is greater than 85%, can effectively stop the signal between the line group to disturb and outside signal interference, play good shield effectiveness.

5, extrude 125 ℃ of thermosetting irradiation crosslinking halogen-free low smoke high flame retardant polyolefin oversheaths in the utility model after electron accelerator irradiation is crosslinked, guarantee that cable has excellent heat resistance, fire resistance, mechanical performance and decay resistance, there is the characteristics such as excellent low cigarette, Halogen, fire-retardant, heat-resisting, unleaded, floride-free, alkali-free, anticorrosion simultaneously, meet instructions for use fully.

The accompanying drawing explanation:

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

Number in the figure: 1 conductor, 2 flame retardant coatings, 3 insulating barriers, 4 lapping layers, 5 sub-shields, 6 lapping layers, 7 packed layers, 8 lapping layers, 9 total screens, 10 lapping layers, 11 oversheaths.

Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.

Embodiment:

Embodiment: referring to Fig. 1, the anti-interference instrument cable of a kind of environment-friendly type of this enforcement, form insulated wire cores by oxygen-free copper conductor 1, synthetic mica tape flame retardant coating 2 and the IXPE insulating barrier 3 that extrudes on flame retardant coating 2, insulated wire cores pair twist or star quad stranding are the line group, outer overlapping high-temperature high-insulation polyester belt 4, the copper free wire braid 5 formation shielding conductor groups of being surrounded with of line group, the line group is overlapping wrapped high-temperature high-insulation polyester belt 6 more outward, be twisted into cable core by a plurality of shielding conductor groups, the cable core gap-fill has LSOH anti-flaming rope packed layer 7; The overlapping high-temperature high-insulation polyester belt 8 that is surrounded with outside cable core, copper free wire braided overall-shielding layer 9, the overlapping halogen-free low-smoke high-flame glass fiber tape 10 that is surrounded with again outside total screen, its outer thermosetting irradiation crosslinking halogen-free low smoke high flame retardant polyolefin oversheath 11 that extrudes.

In concrete 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 be bright and clean, without burr;

Flame retardant coating 2 is to adopt four laminated one-tenth mica tapes overlapping wrapped;

Insulating barrier 3 is to be extruded in by IXPE the layer that extrudes formed on flame retardant coating, and adopts electron irradiation crosslinked;

The outer lapping layer 4 of line group adopts the high-temperature high-insulation polyester belt overlapping wrapped;

Sub-shield 5 adopts the copper free wire braiding structure;

The outer lapping layer 6 of sub-shield adopts the high-temperature high-insulation polyester belt overlapping wrapped;

Packed layer 7 adopts LSOH anti-flaming rope packed layer, fills closely knit, rounding;

The outer lapping layer 8 of cable core adopts the high-temperature high-insulation polyester belt overlapping wrapped;

Total screen 9 adopts the copper free wire braiding structure;

The outer lapping layer 10 of total screen adopts the halogen-free low-smoke high-flame glass fiber tape overlapping wrapped;

Oversheath 11 adopts and extrudes thermosetting irradiation crosslinking halogen-free low smoke high flame retardant polyolefin.

Claims

1. the anti-interference instrument cable of environment-friendly type, by oxygen-free copper conductor (1), synthetic mica tape flame retardant coating (2) and extrude IXPE insulating barrier (3) on flame retardant coating (2) and form insulated wire cores, insulated wire cores pair twist or star quad stranding are the line group, outer overlapping high-temperature high-insulation polyester belt (4), copper free wire braid (5) the formation shielding conductor group of being surrounded with of line group, the line group is overlapping wrapped high-temperature high-insulation polyester belt (6) more outward, be twisted into cable core by a plurality of shielding conductor groups, the cable core gap-fill has LSOH anti-flaming rope packed layer (7); The overlapping high-temperature high-insulation polyester belt (8) that is surrounded with outside cable core, copper free wire braided overall-shielding layer (9), the overlapping halogen-free low-smoke high-flame glass fiber tape (10) that is surrounded with again outside total screen, be extruded with thermosetting irradiation crosslinking halogen-free low smoke high flame retardant polyolefin oversheath (11).