CN2119707U - Ground protection armored cable - Google Patents

Abstract

The utility model discloses a ground protection armored cable belonging to a basic electric element. The ground protection armored cable is characterized in that a ground protection wire is arranged in an armored layer; the ground protection wire is composed of a plurality of steel wires which are arranged along the radial direction and are tightly interphase with steel wires, which makes a plurality of steel wires and a plurality of copper wires at the same layer play the armored action together. A plurality of steel wires can also supply the ground protection. The cable can be used for supply systems of important departments of coal mine, oil field, tall buildings in cities, etc.

Description

Ground protection armored cable

The utility model belongs to essential electronic element, particularly relates to the cable that a kind of armouring is held concurrently ground protection.

Through look into new before the utility model no identical cable be disclosed or used.Existing steel wire armored cable, though have the advantage of tension, resistance to compression mechanical protection, weak point is: because the resistivity of steel wire is bigger, unsuitable double as ground protection line; Existing with the cable of copper wire lapping layer as the ground protection line, though have the electric leakage of preventing, avoid the advantage of the ground protection of fire, weak point is: because the tension of copper wire, resistance to compression mechanical performance be not as steel wire, and also the cost height, unsuitable double as armouring.Therefore, range of application is restricted.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art and a kind of electric shock of preventing that both had is provided, and avoids the ground protection effect of fire, has tension again, measuring body mechanical protection effect, and the low cable of cost.

The purpose of this utility model is achieved in that the cable that a kind of armouring is held concurrently ground protection, has outermost protective layer, inferior outer field armour, also has bed course, insulating barrier, some conductor wire cores and filler etc. in turn.Special character of the present utility model is: comprise the ground protection line in the said armour, this ground protection line is made up of the copper wire that some radially-arranged and steel wire is closely alternate.This composition not only makes with some steel wires and some copper wires in the layer and plays the armouring effect jointly, and some copper wires also play the ground protection effect.

Below in conjunction with accompanying drawing, the utility model is described in detail:

Accompanying drawing is the utility model member schematic diagram.

Referring to accompanying drawing; at cable outermost layer matcoveredn 1; inferior skin is by some steel wires 2 and the some copper wire 3 tight alternate armours of forming 4, and armour 4 has bed course 5, insulating barrier 6, some conductor wire cores 7 successively with interior, and the gap between bed course 5, the insulating barrier 6 is filled by filler 8.

When the conductor wire core in the utility model is four, just become armouring five-core cable with the 5th ground protection line.The utility model can be widely used in the electric power system of important departments such as colliery, oil field, urban skyscraper.

Claims (2)

1, a kind of armouring cable of ground protection of holding concurrently is made up of structures such as protective layer, armour, bed course, insulating barrier, conductor wire core and fillers, it is characterized in that comprising in the armour ground protection line.

2, ground protection cable according to claim 1 is characterized in that: described ground protection line is made up of the copper wire that some radially-arranged and steel wire is closely alternate.

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