CN205282159U

CN205282159U - Flexible fireproof cable of isolated form mineral insulation

Info

Publication number: CN205282159U
Application number: CN201620043780.2U
Authority: CN
Inventors: 高青松
Original assignee: MINGDA ELECTRIC CABLE GROUP Corp
Current assignee: MINGDA ELECTRIC CABLE GROUP Corp
Priority date: 2016-01-18
Filing date: 2016-01-18
Publication date: 2016-06-01
Anticipated expiration: 2026-01-18

Abstract

The utility model relates to a flexible fireproof cable of isolated form mineral insulation, including sinle silk, flame retardant coating, band layer and oversheath, the sinle silk strands into the cable core, and the cable core is outside around wrapping the band layer, and the oversheath cladding is in the outside on band layer. Gap filling flame retardant coating between clearance, sinle silk and the band layer between the sinle silk. The sinle silk includes conductor, insulating layer, isolation layer and dichroic layer, and the crowded package of insulating layer is in the outside of conductor, and the crowded package of isolation layer is in the outside of insulating layer, and the crowded package of dichroic layer is in the outside of isolation layer. The utility model discloses the fire prevention go with bending property, the insulating properties and the fire prevention fire resistance that have improved the cable, and the security that has improved transmission of electricity and power consumption adapts to various conflagration occasions, can install and use under the narrow and small environment in structure complicacy and space.

Description

A kind of isolated form mineral insulating flexible fireproof cable

Technical field

The utility model belongs to power equipment and equipment technical field, it relates to a kind of cable, is specifically related to a kind of isolated form mineral insulating flexible fireproof cable.

Background technology

Owing to cable is aging and overload uses the fire caused to account for larger proportion in electrical fire, the toxic gas that the cable that simultaneously ignites during fire gives out can cause mass casualties, hinders firefighter's fire extinguishing. The important main line of covil construction and the cable of fire-fighting are common flame resistant cable (NH-VV, NH-YJV) and low-smoke zero-halogen fire-resistant cable (WDNH-YJV). Other circuit adopts flame retardant type cable (ZR-VV, CR-YJV). It is known that scene of fire situation is very complicated, emergent fire-fighting needs, for electric line, the high temperature bearing 800 DEG C��1000 DEG C, also have water or other liquid splash and eminence buildings material to drop the situations such as shock, therefore keep normal power supply Capability Requirement harsh under fire field environment on cable. Traditional flame resistant cable can not expire above-mentioned requirements completely, and GB GB/Tl2666-6 flame resistant cable touchstone specifies that 950 DEG C keep 90min, cannot bear spray water and impact that weight falls. Bear spray water and impact that weight falls for meeting, it is necessary to wear metal tube or sealing crane span structure is protected, add and auxiliary expenses is installed and installation takies space.

Practical novel content

The purpose of this utility model is to provide a kind of isolated form mineral insulating flexible fireproof cable, to improve insulating property and the fire prevention fire performance of cable, it is to increase transmission of electricity and electrical safety, adapt to various fire situation and use.

The technical solution of the utility model is: isolated form mineral insulating flexible fireproof cable, comprises core, fireproofing, belting layer and oversheath, core twisted synthesizing cable core, and the outside wrapped belting layer of cable core, oversheath is coated on the outside of belting layer. Gap-fill fireproofing between gap between core, core and belting layer. Core comprises conductor, insulation layer, sealing coat and point chromatograph, and insulation layer is extruded in the outside of conductor, and sealing coat is extruded in the outside of insulation layer, and point chromatograph is extruded in the outside of sealing coat.

Conductor is annealing copper wire or aluminium silk, for pottery chemoprevention fire, fire-resistant silicon rubber makes insulation layer to insulation layer, sealing coat is soft matter aluminum sealing coat, chromatograph is divided to be that cross-linking polyethylene materials divides chromatograph, fireproofing is that the flexible without phosphorus nitrogen of halide-free smokeless fire-retardant ambient cure potteryization refractory mineral matter oxygen barrier fills mud fireproofing, and oversheath is low-smoke non-halogen flame-retardant polyethylene hydrocarbon oversheath. The thickness of insulation layer is 1.4mm, and the thickness of sealing coat is 1.2mm. The core of fireproof cable is 3��10.

One layer of ceramic chemoprevention fire fire-resistant silicon rubber insulation layer is extruded pressing outside circular annealed copper wire conductor, insulated wire cores extrudes one layer of soft matter aluminum metallic material sealing coat, extruding one layer of cross-linking polyethylene materials on sealing coat and make a point chromatograph, crosslinked polyetylene insulated layer adopts red, yellow, green, blue, black or yellow-green colour masterbatch to make cable item line diacritics. Gap between core after twisted synthesizing cable core adopts the closely knit flexibility without phosphorus nitrogen of the halide-free smokeless fire-retardant ambient cure potteryization refractory mineral matter oxygen barrier that extrudes to fill mud as fireproofing, the outer wrapped layer of glass band of cable core is tightened, and extrudes one layer of low-smoke non-halogen flame-retardant polythene material as cable jacket outside glass fiber tape.

The fire prevention of the utility model isolated form mineral insulating flexible fireproof cable and good bending property, improve insulating property and the fire prevention fire performance of cable, improve the security of transmission of electricity and electricity consumption, adapt to various fire situation and use, can install and use under the environment of the good narrow space of complex structure. The utility model applied range, there is high flexibility, prevent fires fire-resistant, current capacity is big, shock-resistant voltage, the damage of high temperature resistant, resistant to overload, mechanical resistant, Halogen are nontoxic, explosion-proof, waterproof, production length and the feature such as specification is unrestricted, and manufacture and in application process to human and environment all without endangering.

Accompanying drawing explanation

Fig. 1 is the schematic cross-section of the utility model isolated form mineral insulating flexible fireproof cable;

Wherein

1 conductor, 2 insulation layers, 3 sealing coats, 4 points of chromatographs, 5 fireproofings, 6 belting layers, 7 oversheaths.

Embodiment

Below in conjunction with embodiment and accompanying drawing, the utility model is described in detail. The utility model protection domain is not limited to embodiment, and those skilled in the art make the scope that any change also belongs to the utility model protection in the scope of scope.

The utility model isolated form mineral insulating flexible fireproof cable as shown in Figure 1, comprises three cores, fireproofing 5, belting layer 6 and oversheath 7. Three core twisted synthesizing cable cores, the outside wrapped belting layer of cable core, oversheath is coated on the outside of belting layer. Gap-fill fireproofing 5 between gap between core, core and belting layer. Core comprises conductor 1, insulation layer 2, sealing coat 3 points of chromatographs 4. Insulation layer is extruded in the outside of conductor, and sealing coat is extruded in the outside of insulation layer, and point chromatograph is extruded in the outside of sealing coat. Conductor 1 is annealing copper wire, and many annealing copper wires press stranded and become through the stranded machine of high strength. Insulation layer is that pottery chemoprevention fire fire-resistant silicon rubber makes insulation layer, and thickness is 1.4mm. Sealing coat is soft matter aluminum sealing coat, and thickness is 1.2mm. Dividing chromatograph to be that cross-linking polyethylene materials divides chromatograph, fireproofing is that the flexible without phosphorus nitrogen of halide-free smokeless fire-retardant ambient cure potteryization refractory mineral matter oxygen barrier fills mud fireproofing, and belting layer is glass fiber tape, and oversheath is low-smoke non-halogen flame-retardant polyethylene hydrocarbon oversheath.

By annealing, copper wire presses stranded through high strength circle and become conductor, outside the circular compacted stranded conductor of high strength, extrude one layer of ceramic chemoprevention fire fire-resistant silicon rubber make insulation layer, body insulation layer extrudes one layer of soft matter aluminum metallic material as sealing coat, sealing coat extrudes layer of polyethylene material as a point chromatograph, cable core twisted synthesizing cable core, closely knit extrude fire-resistant fire-retardant material mineral wool layer cable core is outer, the outer wrapped layer of glass band of fireproofing is tightened, and then extrudes one layer of low-smoke non-halogen flame-retardant polyethylene hydrocarbon material outside glass fiber tape as cable jacket.

The utility model cable application pottery chemoprevention fire fire-resistant silicon rubber makes insulation layer, fire-resisting ceramic silicone rubber adds functional material in high-temperature hot sulphurated siliastic, have under normal temperature nontoxic, tasteless, stopping property, elasticity, nonhygroscopic, do not absorb water, high-low temperature resistant, resistance to ozone ageing and weatherable silicon rubber basic characteristic, and possess excellent electrical insulating property and processing characteristics. Under thermal-flame ablation, functional material silicon rubber compounding mixture forms the armored protective layer of hard potteryization, plays isolated flame, fire prevention, insulation, heat insulation, every the effect of water and antidetonation, ensure that electric power in case of fire, communication unimpeded. Sealing coat outside cable insulation adopts soft matter aluminium matter, has both served thermal insulation, heat insulation, gear fire and the effect of dash, it is possible to prevent in fire field environment object strikes damage cable insulation. Cable divides chromatograph to adopt the cross-linking polyethylene materials of stable performance, plays isolation moisture and the function of oxygen immersion, it is also possible to as cable item line color separation mark, facilitate installation work to construct.

The outer closely knit flexibility without phosphorus nitrogen of the halide-free smokeless fire-retardant ambient cure potteryization refractory mineral matter oxygen barrier that extrudes of cable core fills mud mineral wool layer, form pure inorganic hard potteryization supporter after combustion, inside is hard cellular housing, play good insulation, thermal insulation, heat insulation, gear fire and the effect of dash, can the high temperature of resistance to 2000 DEG C. Hard ceramic armor housing have passed the test of GB/T12666-6 standard 950��1100 DEG C �� 90min and above grade, has good elasticity and flexibility simultaneously, reduces bending radius, produces and does not ftracture in laid processes.

Claims

1. an isolated form mineral insulating flexible fireproof cable, comprises core, fireproofing (5), belting layer (6) and oversheath (7), described core twisted synthesizing cable core, the outside wrapped belting layer of cable core, and oversheath is coated on the outside of belting layer; Gap-fill fireproofing (5) between gap between core, core and belting layer, it is characterized in that: described core comprises conductor (1), insulation layer (2), sealing coat (3) and point chromatograph (4), described insulation layer is extruded in the outside of conductor, described sealing coat is extruded in the outside of insulation layer, and described point of chromatograph is extruded in the outside of sealing coat.

2. isolated form mineral insulating flexible fireproof cable according to claim 1, it is characterized in that: described conductor (1) is annealing copper wire or aluminium silk, described insulation layer (2) is pottery chemoprevention fire fire-resistant silicon rubber insulation layer, described sealing coat (3) is soft matter aluminum sealing coat, described point of chromatograph (4) divides chromatograph for cross-linking polyethylene materials, described fireproofing is that the flexible without phosphorus nitrogen of halide-free smokeless fire-retardant ambient cure potteryization refractory mineral matter oxygen barrier fills mud fireproofing, described belting layer (6) is glass fiber tape, described oversheath (7) is low-smoke non-halogen flame-retardant polyethylene hydrocarbon oversheath.

3. isolated form mineral insulating flexible fireproof cable according to claim 2, is characterized in that: the thickness of described insulation layer is 1.4mm, the thickness of described sealing coat is 1.2mm.

4. isolated form mineral insulating flexible fireproof cable according to claim 1, is characterized in that: described core is 3��10.