CN104575797A - Fireproof cable - Google Patents

Abstract

The invention discloses a fireproof cable which includes a sheath, a filling layer, conductors and an insulating layer, wherein the sheath wraps the filling layer; the filling layer wraps the insulating layer; the conductors are arranged inside the insulating layer; a fireproof layer is arranged between the insulating layer and the conductors; the conductors are made of copper conductors with relatively good fire resistance; the fireproof layer is formed by lapping multi-layer mica tapes; the sheath is prepared by laminating adhesive aluminum foil, a polyethylene film, fiber braided fabric and a metal film through hot melt glue. The fireproof cable is good in fire resistance, and is resistant to high temperature, low in cost and high in safety.

Description

A kind of fireproof cable

Technical field

The present invention relates to a kind of fireproof cable.

Background technology

Fireproof cable is widely used in the place relevant with fire safety and fire-extinguishing and lifesaving such as skyscraper, underground railway, undergrond street, large-scale power station and important industrial and mining enterprises, such as, fire-fighting equipment and promptly to supply line and the control circuit of the emergency services such as leading lights., although the normal power supply that still can maintain a period of time after catching fire, there is price, complex process, problem that difficulty of construction is large in existing mineral insulated cable

Summary of the invention

For the deficiency that prior art exists, the present invention seeks to be to provide a kind of fireproof cable, fire resistance is good, high temperature resistance, and cost is low, and fail safe is high.

To achieve these goals, the present invention realizes by the following technical solutions: it comprises sheath (2), packed layer (1), conductor (5) and insulating barrier (3), and described sheath (2) is wrapped in the skin of packed layer (1); Described packed layer (1) is wrapped in the skin of insulating barrier (3); Be provided with conductor (5) in described insulating barrier (3), described sheath (2) is formed by PUR lamination by aluminium foil subsides, polyethylene film, fibrous braid, metal deposit.

As preferably, between described insulating barrier (3) and described conductor (5), be provided with flame retardant coating (4).

As preferably, described conductor (5) is the good copper conductor of fire resistance.

As preferably, described flame retardant coating (4) is formed by multilayer Mica tape.

As preferably, in described copper conductor, arsenic content is lower than 0.35%.

As preferably, described copper conductor cold deformation is no more than 10%.

Fire resistance of the present invention is good, high temperature resistance, and cost is low, and fail safe is high.

Accompanying drawing explanation

The present invention is described in detail below in conjunction with the drawings and specific embodiments;

Fig. 1 is structural representation of the present invention;

Embodiment

The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.

With reference to Fig. 1, this embodiment by the following technical solutions: a kind of fireproof cable, comprise sheath 2, packed layer 1, conductor 5 and insulating barrier 3, described sheath 2 is wrapped in the skin of packed layer 1; Described packed layer 1 is wrapped in the skin of insulating barrier 3; Be provided with conductor 5 in described insulating barrier 3, described sheath 2 is formed by PUR lamination by aluminium foil subsides, polyethylene film, fibrous braid, metal deposit.

It should be noted that and be provided with flame retardant coating 4 between described insulating barrier 3 and described conductor 5.

It should be noted that described conductor 5 is the good copper conductor of fire resistance.

It should be noted that described flame retardant coating 4 is formed by multilayer Mica tape.

It should be noted that in described copper conductor, arsenic content is lower than 0.35%.

It should be noted that described copper conductor cold deformation is no more than 10%

Fire resistance of the present invention is good, high temperature resistance, and cost is low, and fail safe is high.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (6)

1. a fireproof cable, comprise sheath (2), packed layer (1), conductor (5) and insulating barrier (3), it is characterized in that, described sheath (2) is wrapped in the skin of packed layer (1); Described packed layer (1) is wrapped in the skin of insulating barrier (3); Be provided with conductor (5) in described insulating barrier (3), described sheath (2) is formed by PUR lamination by aluminium foil subsides, polyethylene film, fibrous braid, metal deposit.

2. the fireproof cable according to claims 1, is characterized in that, is provided with flame retardant coating (4) between described insulating barrier (3) and described conductor (5).

3. the fireproof cable according to claims 1, is characterized in that, described conductor (5) is the good copper conductor of fire resistance.

4. the fireproof cable according to claims 1 or 2, is characterized in that, described flame retardant coating (4) is formed by multilayer Mica tape.

5. the fireproof cable according to claims 3, is characterized in that, in described copper conductor, arsenic content is lower than 0.35%.

6. the fireproof cable according to claims 3, is characterized in that, described copper conductor cold deformation is no more than 10%.