CN208970214U - A kind of superhigh temperature fireproof cable - Google Patents

Abstract

The utility model discloses a kind of superhigh temperature fireproof cables, including round conductor (1) and the corrugated conductor (2) being arranged on the outside of round conductor (1), round conductor (1) and the wrapped synthetic mica tape of corrugated conductor (2), ceramic polyolefin insulation layer (3) are extruded on the outside of synthetic mica tape, wrapped first glass fiber tape (4) on the outside of ceramic polyolefin insulation layer (3), oxygen barrier layer (5) are provided on the outside of first glass fiber tape (4), wrapped second glass fiber tape (6) on the outside of oxygen barrier layer (5), oversheath (7) are provided with outside second glass fiber tape (6), the utility model makes cable itself be resistant to the high temperature more than 1200 DEG C.

Description

A kind of superhigh temperature fireproof cable

Technical field

The utility model relates to field of cable technology more particularly to a kind of superhigh temperature fireproof cables.

Background technique

With the fast development of national economy and the continuous improvement of living standards of the people, society's electricity consumption amount is greatly increased.Respectively The steep increasing of kind electrical equipment consumption, electrical fire accident also increase severely therewith.According to statistics, fire occurs every year for China ten thousand about more than ten It rises, more than 10 hundred million yuan of direct property loss.Wherein, caused by electrical causes such as wire and cable short circuit, excess load, electrical equipment failures Fire account for about sum 30%, the frequency of electrical fire and caused loss occupy first of all kinds of fire.Electrical In fire, half is accounted for about by the fire that wire and cable causes.Therefore more next about the fire-retardant and fire safety problem of wire and cable More it is valued by people, it is also higher and higher to the fire-retardant and fire protection requirement of wire and cable.

Country's flexible fire-proof cable market major product is several classes such as RTTZ, YTTW, BTLY, BBTRZ at present, this several class produces The highest refractory temperature grade of product is at 950 DEG C or so.However it is reported that actual temperature when fire occurring in building can It can reach 1200 DEG C, highest temperature when fire occurs is not achieved in even higher temperature, the temperature resistant grade of common fireproof cable Degree, this just needs a kind of fireproof cable of higher refractory temperature grade.

Utility model content

To solve the above-mentioned problems, the utility model proposes a kind of superhigh temperature fireproof cables.

Specifically, a kind of superhigh temperature fireproof cable, leads including round conductor and the corrugated being arranged on the outside of round conductor The wrapped synthetic mica tape of body, round conductor and corrugated conductor, synthetic mica tape outside are extruded with ceramic polyolefin insulation Layer, wrapped first glass fiber tape on the outside of ceramic polyolefin insulation layer, the first glass fiber tape outside is provided with oxygen barrier layer, every Wrapped second glass fiber tape on the outside of oxygen layer, the second glass fiber tape are provided with oversheath outside.

The synthetic mica tape is provided with four layers.

The ceramic polyolefin insulation layer is with a thickness of 2mm.

The oxygen barrier layer uses ceramic polyolefin.

The oxygen barrier layer is with a thickness of 3mm.

The oversheath is made of low-smoke halide-free fireproof composite polyolefine material.

The oversheath is with a thickness of 1.4mm.

The utility model has the beneficial effects that: ceramic is poly- using mica tape and ceramic polyolefin as insulating layer Alkene is as oxygen barrier layer, and polyolefin is as external sheath layer；Ceramic polyolefin can form hard shell in burning and enhance electricity The fire resistance of cable makes cable itself be resistant to the high temperature more than 1200 DEG C.Polyolefin is as restrictive coating, in combustion process not Smog and toxic gas are generated, the requirement of cable low smoke and zero halogen is met, meets country and encourages to develop wanting for green clean energy resource It asks.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

1- round conductor, 2- corrugated conductor, 3- ceramic polyolefin insulation layer, the first glass fiber tape of 4-, 5- in figure Oxygen barrier layer, the second glass fiber tape of 6-, 7- oversheath.

Specific embodiment

For a clearer understanding of the technical features, objectives and effects of the utility model, now compareing Detailed description of the invention Specific embodiment of the present utility model.

As shown in Figure 1, a kind of superhigh temperature fireproof cable, including round conductor 1 and the corrugation being arranged on the outside of round conductor 1 Shape conductor 2 constitutes corrugated and adds intermediate round compacted comductor structure.Through this structure, it avoids and is deposited between multiple round cores In larger gap, oxygen content is high, the disadvantage of fire protecting performance difference.Round conductor 1 and the wrapped four laminated Cheng Yun of corrugated conductor 2 Master tape, is extruded with the ceramic polyolefin insulation layer 3 with a thickness of 2mm on the outside of synthetic mica tape, outside ceramic polyolefin insulation layer 3 Wrapped first glass fiber tape 4 in side；It constitutes multiple cores, is provided with oxygen barrier layer 5 on the outside of the first glass fiber tape 4, i.e., multiple lines Oxygen barrier layer 5 is extruded on the outside of core, oxygen barrier layer 5 uses ceramic polyolefin, with a thickness of 3mm.5 wrapped second glass fibers in outside of oxygen barrier layer Band 6 is tieed up, is provided with oversheath 7 outside the second glass fiber tape 6, oversheath 7 is made of low-smoke halide-free fireproof composite polyolefine material, thickness For 1.4mm.Gap filling between first glass fiber tape 4 and oxygen barrier layer 5 has ceramic polyolefin.

Insulation uses synthetic mica tape and ceramic polyolefin compound inslation, and mica tape is common fire proofing wood in cable Material not only has good fire protecting performance (1300 DEG C of heatproof or more), while also with excellent electrical insulation properties (volume electricity 1.0 × 1011 Ω m of resistance rate).Ceramic polyolefin insulation is extruded outside mica tape, insulate outer wrapped glass fiber tape；Outside cable core Ceramic polyolefin oxygen barrier, wrapped glass fiber tape outside oxygen barrier layer are set；Ceramic polyolefin insulation material and oxygen barrier material are by fire Hard ceramic shell can be generated afterwards, completely cut off damage of the fire source to insulated cable core, promoted cable security performance.

Claims (7)

1. a kind of superhigh temperature fireproof cable, which is characterized in that including round conductor (1) and be arranged on the outside of round conductor (1) Corrugated conductor (2), round conductor (1) and the wrapped synthetic mica tape of corrugated conductor (2), synthetic mica tape outside are extruded with Ceramic polyolefin insulation layer (3), wrapped first glass fiber tape (4) in ceramic polyolefin insulation layer (3) outside, the first glass It is provided with oxygen barrier layer (5) on the outside of fiber band (4), wrapped second glass fiber tape (6), the second glass fibre on the outside of oxygen barrier layer (5) Oversheath (7) are provided with outside band (6).

2. a kind of superhigh temperature fireproof cable according to claim 1, which is characterized in that the synthetic mica tape is provided with Four layers.

3. a kind of superhigh temperature fireproof cable according to claim 1, which is characterized in that the ceramic polyolefin insulation Layer (3) is with a thickness of 2mm.

4. a kind of superhigh temperature fireproof cable according to claim 1, which is characterized in that the oxygen barrier layer (5) is using pottery Porcelain polyolefin.

5. a kind of superhigh temperature fireproof cable according to claim 1, which is characterized in that the oxygen barrier layer (5) with a thickness of 3mm。

6. a kind of superhigh temperature fireproof cable according to claim 1, which is characterized in that the oversheath (7) is by low cigarette Halogen-free anti-flaming polyolefin material is constituted.

7. a kind of superhigh temperature fireproof cable according to claim 1, which is characterized in that the oversheath (7) with a thickness of 1.4mm。