CN205900177U - Improve fire -retardant type overhead insulated cable - Google Patents

Abstract

The utility model discloses an improve fire -retardant type overhead insulated cable, including a cable core, the cable core form by an insulation core, control core and a ground wire transposition, the glass silk is filled by the department in the cable core space, is crowded package thickness 2 outside the cable core is 4mm's fire -retardant glass fiber tape 1 around package thickness outside fire -retardant glass fiber tape are are 2cm's steel wire armoring layer, steel wire armoring layer equipped with thickness outward and 1 2cm's aluminium sheath, insulation core constitute by two central hosting core, two aluminum alloy conductor and the crowded packet of oval insulating layer outside aluminum alloy conductor of setting up two central hosting core outside, be connected with the strengthening rib between two aluminum alloy conductor. The utility model has the advantages of aging resistance, corrosion resistance, difficult disconnected core, difficult emergence displacement, bearing nature is strong, the mechanicalness good, fire -resistant and flame -retardant.

Description

A kind of improvement flame retardant type aerial insulated cable

Technical field

This utility model is related to power cable field, refers in particular to a kind of improvement flame retardant type overhead insulating electricity of below 35kv Cable.

Background technology

At present, with social development, the demand of cable rises steadily, people's also more and more higher of the requirement to cable, Especially in the environment of aerial cable, when cable is subject to external stress to act on, its internal wire is susceptible to displacement, leads to Cable local temperature is too high, the communication efficiency of impact cable；Existing cable fire flame resistance effect is poor, in cable work mistake Cheng Zhong, runs into naked light and will burn or the too high nature of temperature of itself, causes its current-carrying capacity to reduce.

In addition, built on stilts span is restricted, and built on stilts yardstick is big, not only causes cost to raise, and resist external wind with And the ability of rainy day is poor, if running into thunderstorm gale weather, and hail frost, it is susceptible to rupture and cause accident；Separately Outward, conductor is susceptible to displacement.Therefore it provides a kind of aerial cable with higher-strength is that those skilled in the art are badly in need of solution Problem certainly.

Utility model content

Technical problem to be solved in the utility model there is provided that a kind of fire resistant flame retardant is good, mechanicalness is good, load Good, not easily broken core, it is not susceptible to the aerial insulated cable of displacement.

A kind of improvement flame retardant type aerial insulated cable described in the utility model, including cable core, described cable core is by one Insulated wire cores, a control conductor and ground wire is stranded forms；In cable core gap filling glass silk, extrude outside cable core Thickness is the flame-proof glass fibre band of 2-4mm, is the steel wire armor layer of 1-2cm in the outer wrapped thickness of flame-proof glass fibre band, steel wire armor layer It is externally provided with the aluminium sheath that thickness is 1-2cm；Described insulated wire cores are carried core, are arranged on Liang Gen center carrying core by Liang Gen center Two outer aluminium alloy conductors and the oval insulating barrier being extruded in outside aluminium alloy conductor are constituted, between two aluminium alloy conductors It is connected with reinforcement.

Improve further, by copper conductor and the screen layer that is extruded in outside copper conductor is constituted described control conductor.

Improve further, it is steel wire rope that described center carries core.

The beneficial effects of the utility model are:

1st, adopt aluminium alloy conductor, increase tensile strength, enhance pulling force.

2nd, be provided with aluminium alloy conductor carrying core so that cable is in thunderstorm gale weather, and hail frost it is not easy to Fracture is occurred to cause accident.

3rd, connected by reinforcement between aluminium alloy conductor so that aluminium alloy conductor is not susceptible to displacement it is ensured that aluminium alloy The normal work of conductor.

3rd, filling adopts glass fiber, and glass fiber will not burn, and also will not send toxic gas because of burning, and protect well Each core in cable core.

4th, this utility model adopts Double-layer flame-retardant, outermost layer adopt difficult to burn aluminium sheath, be inside additionally provided with flame-retardant layer so that Anti-flammability is than the original several times that improve, and aluminium sheath also protects whole cable not to be burned, and centre is provided with armor Ensure that cable is not extruded.

5th, this utility model cable core adopts multicore composite construction, changes original single structure so that the performance of cable Also improve a lot, be not susceptible to problem, stability is fine.

Brief description

Fig. 1 is structural representation of the present utility model.

Specific embodiment

As shown in figure 1, a kind of improvement flame retardant type aerial insulated cable described in the utility model, including cable core, described By insulated wire cores, a control conductor and ground wire 6 is stranded forms for cable core；In cable core gap filling glass silk 7, Extrude the flame-proof glass fibre band 8 that thickness is 2-4mm outside cable core, be the wire armoring of 1-2cm in the outer wrapped thickness of flame-proof glass fibre band Layer 9, steel wire armor layer is externally provided with the aluminium sheath 10 that thickness is 1-2cm；Described insulated wire cores are carried core 1, are set by Liang Gen center Zhi Lianggen center carries two aluminium alloy conductors 2 outside core and is extruded in oval insulating barrier 3 structure outside aluminium alloy conductor Become, in order to insulated wire cores are not susceptible to displacement, insulating barrier is using oval；It is connected with reinforcement between two aluminium alloy conductors 11 it is therefore prevented that conductor is subjected to displacement.

Wherein, by copper conductor 4 and the screen layer 5 that is extruded in outside copper conductor is constituted described control conductor.

So that cable is in thunderstorm gale weather, and it is not easy to there is fracture and causing accident, in aluminum in hail frost It is provided with carrying core, this carries core is steel wire rope in alloy conductor.

This utility model provides a kind of thinking improving flame retardant type aerial insulated cable and method, implements this technology The method of scheme and approach are a lot, and the above is only preferred implementation of the present utility model it is noted that for this technology For the those of ordinary skill in field, on the premise of without departing from this utility model principle, some improvement and profit can also be made Decorations, these improvements and modifications also should be regarded as protection domain of the present utility model.In the present embodiment, clearly not each component part is equal Available prior art is realized.

Claims (3)

1. a kind of improve flame retardant type aerial insulated cable, including cable core it is characterised in that: described cable core is by a covered wire Core, a control conductor and ground wire is stranded forms；In cable core gap filling glass silk, extruding thickness outside cable core is The flame-proof glass fibre band of 2-4mm, is the steel wire armor layer of 1-2cm in the outer wrapped thickness of flame-proof glass fibre band, steel wire armor layer is externally provided with Thickness is the aluminium sheath of 1-2cm；Described insulated wire cores by Liang Gen center carry core, be arranged on Liang Gen center carry core outside two Root aluminium alloy conductor and the oval insulating barrier being extruded in outside aluminium alloy conductor are constituted, and are connected between two aluminium alloy conductors Reinforcement.

2. according to claim 1 improvement flame retardant type aerial insulated cable it is characterised in that: described control conductor is by copper Conductor and the screen layer being extruded in outside copper conductor are constituted.

3. according to claim 1 improve flame retardant type aerial insulated cable it is characterised in that: described center carries core and is Steel wire rope.