CN204946563U

CN204946563U - A kind of mineral insulated cable

Info

Publication number: CN204946563U
Application number: CN201520593841.8U
Authority: CN
Inventors: 宋伟; 陈春元; 马宁; 陈威
Original assignee: JIAOZUO TONGXIN CABLE Co Ltd
Current assignee: JIAOZUO TONGXIN CABLE Co Ltd
Priority date: 2015-08-10
Filing date: 2015-08-10
Publication date: 2016-01-06
Anticipated expiration: 2025-08-10

Abstract

Basis is novel relates to a kind of mineral insulated cable, comprise conductor wire core, inner insulation layer, first protecting pipe, second protecting pipe, thermal insulation layer, mica tape insulating barrier, magnesia powder insulating barrier, alkali-free glass wool packed layer, overcoat and external insulation layer, coated by thermal insulation layer outside every bar conductor wire core, coated by inner insulation layer outside thermal insulation layer, first protecting pipe is horizontal to be coated on outside all conductor wire cores, second protecting pipe is coated on outside the first protecting pipe, and establish alkali-free glass wool packed layer between the first protecting pipe and the second protecting pipe, overcoat is coated on outside the first protecting pipe, external insulation layer is coated on outside overcoat.This novel layouts is reasonable, insulating properties, heat-resisting quantity, corrosion resistance and fire resistance are good, separately there is good tension, resistance to compression and anti-sagging ability simultaneously, thus greatly improve safety in utilization and the reliability of cable, and effectively raise the place adaptive capacity of cable.

Description

A kind of mineral insulated cable

Technical field

The utility model relates to a kind of mineral insulated cable, belongs to cable machinery technical field.

Background technology

At present along with the raising of power supply grid electric pressure and the energy consumption of power consumption equipment increase, therefore current cable is caused operationally, need to possess good insulation property and good heat resistance, simultaneously, the occasion used due to cable has great otherness, thus cause cable very easily to receive the threat such as external impacts or pollutant corrosion, therefore require that cable has good damage-retardation performance simultaneously, in order to meet this requirement, currently have developed polytype construction of cable, but in use find, the current construction of cable often only can meet to cable use required for possess high temperature resistant, insulation, tension, resistance to compression, in numerous characteristic such as fire-retardant one or several, the all characteristics possessed required for cable use cannot be met completely, therefore cause the serviceability stability of cable not enough, and the scope of application, especially relatively weak to the adaptability of environment, and the scope of application that therefore result in cable is greatly limited, effectively cannot meet the actual needs used, therefore for this present situation, in the urgent need to developing a kind of mineral insulated cable, to meet the needs that current reality uses.

Utility model content

This novel object is just to overcome above-mentioned deficiency, provides a kind of mineral insulated cable.

For achieving the above object, this is novel is be achieved through the following technical solutions:

A kind of mineral insulated cable, comprise conductor wire core, inner insulation layer, first protecting pipe, second protecting pipe, thermal insulation layer, mica tape insulating barrier, magnesia powder insulating barrier, alkali-free glass wool packed layer, overcoat and external insulation layer, wherein conductor wire core at least 3, and it is coated by thermal insulation layer outside every bar conductor wire core, coated by inner insulation layer outside thermal insulation layer, first protecting pipe cross section structure ringwise, and be coated on outside all conductor wire cores, conductor wire core is all uniform ringwise around the first protecting pipe axis, filled and compacting by magnesia powder insulating barrier between the inner insulation layer outer surface outside the first protecting pipe inner surface and each conductor wire core, second protecting pipe is coated on outside the first protecting pipe, and establish alkali-free glass wool packed layer between the first protecting pipe and the second protecting pipe, overcoat is coated on outside the first protecting pipe, external insulation layer is coated on outside overcoat, at least one stratus master tape insulating barrier is established between overcoat and the first protecting pipe and external insulation layer.

Further, be parallel to each other between described conductor wire core distribution or stranded distribution.

Further, the first described protecting pipe, the inner surface of the second protecting pipe and outer surface all establish stress groove, and between adjacent stress groove, spacing is 0.5-5 centimetres.

Further, the first protecting pipe on the first described protecting pipe, the second protecting pipe between two adjacent stress grooves, the second protecting pipe pipe shaft are cydariform.

The utility model is rationally distributed, insulating properties, heat-resisting quantity, corrosion resistance and fire resistance are good, separately there is good tension, resistance to compression and anti-sagging ability simultaneously, thus greatly improve safety in utilization and the reliability of cable, and effectively raise the place adaptive capacity of cable.

Accompanying drawing explanation

Fig. 1 is this novel structural representation;

Fig. 2 is the first protecting pipe, the second protecting pipe structural representation.

Embodiment

A kind of mineral insulated cable as illustrated in fig. 1 and 2, comprise conductor wire core 1, inner insulation layer 2, first protecting pipe 3, second protecting pipe 4, thermal insulation layer 5, mica tape insulating barrier 6, magnesia powder insulating barrier 7, alkali-free glass wool packed layer 8, overcoat 9 and external insulation layer 10, wherein conductor wire core 1 at least 3, and it is coated by thermal insulation layer 5 outside every bar conductor wire core 1, coated by inner insulation layer 2 outside thermal insulation layer 5, first protecting pipe 3 cross section structure ringwise, and be coated on outside all conductor wire cores 1, conductor wire core 1 is all uniform ringwise around the first protecting pipe 3 axis, filled and compacting by magnesia powder insulating barrier 7 between inner insulation layer 2 outer surface outside the first protecting pipe 3 inner surface and each conductor wire core 1, second protecting pipe 4 is coated on outside the first protecting pipe 3, and establish alkali-free glass wool packed layer 8 between the first protecting pipe 3 and the second protecting pipe 4, overcoat 9 is coated on outside the first protecting pipe 4, external insulation layer 10 is coated on outside overcoat 9, at least one stratus master tape insulating barrier 6 is established between overcoat 9 and the first protecting pipe 4 and external insulation layer 10.

In the present embodiment, be parallel to each other between described conductor wire core 1 distribution or stranded distribution.

In the present embodiment, the inner surface of the first described protecting pipe 3, second protecting pipe 4 and outer surface all establish stress groove 11, and adjacent stress groove 11 spacing are 0.5-5 centimetres.

In the present embodiment, the first protecting pipe 3, second protecting pipe 4 pipe shaft on the first described protecting pipe 3, second protecting pipe 4 between two adjacent stress grooves 11 is cydariform.

More than show and describe this novel general principle, principal character and this novel advantage.The technical staff of the industry should understand; basis is novel not to be restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates this novel principle; under the prerequisite not departing from these novel spirit and scope; basis is novel also has various changes and modifications, and these changes and improvements all fall in the novel scope of claimed basis.This novel claimed scope is defined by appending claims and equivalent thereof.

Claims

1. a mineral insulated cable, it is characterized in that: described mineral insulated cable comprises conductor wire core, inner insulation layer, first protecting pipe, second protecting pipe, thermal insulation layer, mica tape insulating barrier, magnesia powder insulating barrier, alkali-free glass wool packed layer, overcoat and external insulation layer, wherein said conductor wire core at least 3, and it is coated by thermal insulation layer outside described every bar conductor wire core, coated by inner insulation layer outside described thermal insulation layer, described the first protecting pipe cross section structure ringwise, and be coated on outside all conductor wire cores, described conductor wire core is all uniform ringwise around the first protecting pipe axis, filled and compacting by magnesia powder insulating barrier between the inner insulation layer outer surface outside the first described protecting pipe inner surface and each conductor wire core, the second described protecting pipe is coated on outside the first protecting pipe, and establish alkali-free glass wool packed layer between the first protecting pipe and the second protecting pipe, described overcoat is coated on outside the first protecting pipe, described external insulation layer is coated on outside overcoat, at least one stratus master tape insulating barrier is established between described overcoat and the first protecting pipe and external insulation layer.

2. a kind of mineral insulated cable according to claim 1, is characterized in that, be parallel to each other between described conductor wire core distribution or stranded distribution.

3. a kind of mineral insulated cable according to claim 1, is characterized in that, the first described protecting pipe, the inner surface of the second protecting pipe and outer surface all establish stress groove, and between adjacent stress groove, spacing is 0.5-5 centimetres.

4. a kind of mineral insulated cable according to claim 3, is characterized in that, the first protecting pipe on the first described protecting pipe, the second protecting pipe between two adjacent stress grooves, the second protecting pipe pipe shaft are cydariform.