CN104575785A - Mineral cable - Google Patents

Abstract

The invention discloses a mineral cable. The mineral cable comprises a sheath, a filled layer, a conductor and an insulation layer, wherein the outer layer of the filled layer is wrapped with the sheath; the outer layer of the insulation layer is wrapped with the filled layer; the conductor is arranged in the insulation layer; a refractory layer is arranged between the insulation layer and the conductor; the conductor is a copper conductor with relatively good fire resistance; a fluorescent layer is arranged on the sheath. The mineral cable disclosed by the invention has the advantages of good fire resistance, high temperature resistance, low cost and high safety.

Description

A kind of mining cable

Technical field

The present invention relates to a kind of mining cable.

Background technology

Mining 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 mining 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 provided with fluorescence coating.

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

As preferably, described conductor (5) is cadmium copper alloy.

As preferably, sheath (2) is made up of resistance to compression layer, packed layer and thermal insulation layer.

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 mining 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 provided with fluorescence coating.

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 cadmium copper alloy.

It should be noted that sheath 2 is made up of resistance to compression layer, packed layer and thermal insulation layer.

It should be noted that described resistance to compression layer is asbestos layer.

It should be noted that in described packed layer and add nitrogen.

It should be noted that in described packed layer and add drier.

It should be noted that described thermal insulation layer is glass fibre cotton felt.

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 (9)

1. a mining 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 provided with fluorescence coating.

2. the mining 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 mining cable according to claims 1, is characterized in that, described conductor (5) is cadmium copper alloy.

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

5. the mining cable according to claims 1, is characterized in that, described sheath (2) is made up of resistance to compression layer, packed layer and thermal insulation layer.

6. the mining cable according to claims 5, is characterized in that, described resistance to compression layer is asbestos layer.

7. the mining cable according to claims 5, is characterized in that, adds nitrogen in described packed layer.

8. the mining cable according to claims 5, is characterized in that, adds drier in described packed layer.

9. the mining cable according to claims 5, is characterized in that, described thermal insulation layer is glass fibre cotton felt.