CN201199463Y

CN201199463Y - Foaming heat insulation type silicon rubber insulation flame-resistant cable

Info

Publication number: CN201199463Y
Application number: CNU2008201163449U
Authority: CN
Inventors: 胡光政
Original assignee: ANHUI HUALING CABLE GROUP Co Ltd
Current assignee: ANHUI HUALING CABLE GROUP Co Ltd
Priority date: 2008-05-12
Filing date: 2008-05-12
Publication date: 2009-02-25
Anticipated expiration: 2018-05-12

Abstract

The utility model discloses a foaming heat-insulated type silicone rubber insulating fire resistant cable which is characterized in that a conductive core adopts multi-strand conductors or a single conductor; an insulating layer which is extruded on the conductor is a silicone rubber material, a filling layer which is filled at the periphery of each conductor is a high-temperature resistant filling material, an outer surface layer adopts an outer protecting layer which takes foaming heat-insulated type polyolefin as materials and a longitudinal covering aluminum-plastic composite layer is arranged between the filling layer and the outer protecting layer. The insulating fire resistant cable has excellent fire resistance performance, and the cable circuit can still operate normally for a certain time when the fire occurs, thus bringing help to rescue operation and reducing casualties and property loss.

Description

Foaming heat insulation type silicon rubber insulation fire-resistant cable

Technical field

The utility model relates to cable, a kind of cable that possesses the excellent fire resistance energy of more specifically saying so.

Background technology

Quickening along with Chinese society economic construction, fire-resisting cable is applied in important department and public places such as skyscraper, subway, power plant, nuclear power station widely, many engineerings begin to trend towards the more permanent fire-resisting cable of flame resistant simultaneously, so that after breaking out of fire, circuit can keep certain hour normally to move, rescue work is very helpful, can reduces casualties and damage to property to a great extent.

At present, both at home and abroad more adopt be magnesium oxide mineral insulation fire-resisting cable and mica tape wrapped/fire-resisting cable of plastics (rubber) compound inslation, the former manufacturing cost height, it is big to lay difficulty; The latter has stability scarcely, and a lot of mica tapes are thicker, hardness is big, the binder content height, and mica sheet comes off easily in wrapped process, the particularly manufacturing of small bore fire-resisting cable, and the quality of product is difficult to guarantee.Though Chang Gui silicon rubber becomes silicon dioxide attached to the cable conductor surface after burning in addition, it has fire resistance, but the silicon dioxide after the burning is powdery, no adhesive force and certain intensity, electric wire and cable conductor still is easy to be in contact with one another and causes short circuit, thereby fire-resistant effect is still relatively poor.

The utility model content

The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of foaming heat insulation type silicon rubber insulation fire-resistant cable that possesses excellent fire resistance is provided, the normal operation that cable line still can keep certain hour when fire was taken place, rescue work is brought very big help, can reduce casualties and damage to property to a great extent.

The utility model technical solution problem adopts following technical scheme:

The design feature of the utility model foaming heat insulation type silicon rubber insulation fire-resistant cable is that conductor wire core adopts multiply or single conductor, the insulating barrier that is extruded on the conductor is a silastic material, the packed layer that is filled in each conductor periphery is high temperature resistant inserts, it is the outer jacket of material that extexine adopts with foaming heat insulation type polyolefin, is set to vertical alclad and moulds composite bed between packed layer and outer jacket.

Design feature of the present utility model is that also the skin of moulding composite bed at vertical alclad sets gradually fire-retardant inner covering and armour, is the outer surface that the outer jacket of material is extruded in described armour with foaming heat insulation type polyolefin.

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

Conductor wire core adopts multiply or single copper conductor in the utility model, and outsourcing silicon rubber insulation material has the same good bending property of common cable; Material non-toxic, tasteless has flexibility and elasticity preferably under home.

The utility model utilizes silicon rubber to have the characteristic of anti-very high temperature in short-term, high temperature resistant inserts is set simultaneously and vertical alclad is moulded composite bed, under home, play the effect of electromagnetic shielding on the one hand, played good fire insulation heat-blocking action on the other hand under flame and hot conditions, the temperature of control conductor wire core is below 400 ℃; Outer jacket adopts meets heat or meets fiery expansion type polyolefin cable sheath material; material is easy to get; the performance maturation; under the environment that runs into high temperature and flame, expand; and form the duricrust do not drip, can effectively reduce heat, block heat and flame further to the cable core diffusion inside, protection cable insulation core operate as normal 90 minutes in fire; its performance than mica tape wrapped/fire-resisting cable of plastics (rubber) composite fire insulation is more stable, cost performance is higher.

Description of drawings

Fig. 1 is the utility model four-core type construction of cable schematic diagram.

Fig. 2 is the utility model three-hole construction of cable schematic diagram.

Number in the figure: 1 conductor, 2 insulating barriers, 3 packed layers, 4 vertical alclads are moulded composite bed, 5 outer jackets, 6 fire-retardant inner coverings, 7 armours.

Below in conjunction with drawings and Examples the utility model is further specified.

Embodiment

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

Referring to Fig. 1, in the present embodiment, conductor wire core adopts zinc-plated or not zinc-plated multiply or single copper conductor 1, and performance should meet the requirement of GB/T3956-1997; The insulating barrier 2 that is extruded on the conductor 1 is silastic material, is to be base-material routinely with the rubber monomer, adds white carbon, constitution controller and other auxiliary agent, through vacuum kneading, the mixing sizing material of making; The packed layer 3 that is filled in each conductor 1 periphery is high temperature resistant inserts, and its stranding twining package tape and inserts adopt high temperature resistant glass cloth and glass rope respectively; It is the outer jacket 5 of material that extexine adopts with foaming heat insulation type polyolefin, meets when hot that it expands, and does not drip, and plays heat insulation back-fire relief effect; Between packed layer 3 and outer jacket 5, be set to vertical alclad and mould composite bed 4, promptly with the aluminum plastic composite belt longitudinal bag.

Referring to Fig. 2, in concrete the enforcement, also can set gradually fire-retardant inner covering 6 and armour 7, be the outer surface that the outer jacket 5 of material is extruded in armour 7 with foaming heat insulation type polyolefin at the skin that vertical alclad is moulded composite bed 4, more outstanding on mechanical performance and fire resistance.)

Claims

1. foaming heat insulation type silicon rubber insulation fire-resistant cable, it is characterized in that conductor wire core adopts multiply or single conductor (1), the insulating barrier (2) that is extruded on the conductor (1) is a silastic material, being filled in the peripheral packed layer (3) of each conductor (1) is high temperature resistant inserts, it is the outer jacket (5) of material that extexine adopts with foaming heat insulation type polyolefin, is set to vertical alclad and moulds composite bed (4) between described packed layer (3) and outer jacket (5).

2. foaming heat insulation type silicon rubber insulation fire-resistant cable according to claim 1, it is characterized in that the skin of moulding composite bed (4) at described vertical alclad sets gradually fire-retardant inner covering (6) and armour (7), described is the outer surface that the outer jacket (5) of material is extruded in described armour (7) with foaming heat insulation type polyolefin.