CN206516416U

CN206516416U - A kind of midium voltage cable with fire prevention mineral mud

Info

Publication number: CN206516416U
Application number: CN201720229315.2U
Authority: CN
Inventors: 尹灵
Original assignee: SHENZHEN CHENGTIANTAI CABLE INDUSTRIAL DEVELOPMENT CO LTD
Current assignee: SHENZHEN CHENGTIANTAI CABLE INDUSTRIAL DEVELOPMENT CO LTD
Priority date: 2017-03-09
Filing date: 2017-03-09
Publication date: 2017-09-22
Anticipated expiration: 2027-03-09

Abstract

The utility model discloses a kind of midium voltage cable with fire prevention mineral mud, including some beam conductor wire cores, conductor is enclosed with the conductor wire core, internal shield is enclosed with successively outside the conductor, insulating barrier and external shielding layer, it is described to be integrally wrapped with oxygen barrier layer per beam conductor wire core, waterproof mineral shale is filled between whole beam conductor wire cores and oxygen barrier layer, glass belting layer is enclosed with outside the oxygen barrier layer successively, metal armor layers and external sheath layer, the metal armor layers use galvanized steel strip metal armor layers, oxygen barrier layer is using hard silicon based ceramic fire-resistant polyolefin layer, it is overall to use three beams or single beam conductor wire core combination oxygen barrier layer and waterproof mineral shale, waterproof mineral shale can harden crust protection in high-temp combustion, play good thermal insulation protection, greatly reduce in state lower conductor temperature and the reduction line drop of catching fire, greatly improve fire line, and can guarantee that cable runs safety and stability under Fire Conditions, electric property stability is high.

Description

A kind of midium voltage cable with fire prevention mineral mud

Technical field

The utility model is related to technical field of electric wires and cables, specifically a kind of midium voltage cable with fire prevention mineral mud.

Background technology

With the security requirement more and more higher to building, electric wire is used as the necessary production needed for being powered in building Product, its safety and environmental protection performance is critically important, and the fireproof cable that can meet fire-fighting requirements occurred on current market has BTTZ type mineral Matter insulated cable, the cable is easily made moist due to magnesium oxide insulated, and the metallic sheath easy damaged of its joint, and meeting will lose after water Function of supplying power, fixing is inadequate；Another fireproof cable is that BTLY aluminium sheaths continuously extrude mineral insulated cable, cable master Aluminum metal set is used, and with polyolefin Y as oversheath plastics, it is overall with certain flexibility but easy when middle pressure is used Occurs leaky in corrosive atmosphere.Therefore existing fire safety cable also needs further to improve improving performance.

Utility model content

The purpose of this utility model is to provide a kind of midium voltage cable with fire prevention mineral mud, to solve above-mentioned background skill Proposed in art make moist electric leakage and power supply performance difference and structural strength it is low.

To achieve the above object, the utility model provides following technical scheme：

It is enclosed with a kind of midium voltage cable with fire prevention mineral mud, including some beam conductor wire cores, the conductor wire core Internal shield, insulating barrier and external shielding layer are enclosed with outside conductor, the conductor successively, whole beam conductor wire cores are overall outer Be wrapped with oxygen barrier layer, waterproof mineral shale be filled between whole beam conductor wire cores and oxygen barrier layer, outside the oxygen barrier layer according to Secondary to be enclosed with glass belting layer, metal armor layers and external sheath layer, the metal armor layers use galvanized steel strip metal armor layers.

It is preferred that, the oxygen barrier layer is using hard silicon based ceramic fire-resistant polyolefin layer.

It is preferred that, the external sheath layer uses low-smoke halide-free fireproof composite polyolefine material.

It is preferred that, the oxygen barrier layer thickness is 3-6mm.

It is preferred that, the metal armor layers thickness is 1-2mm.

It is preferred that, the conductor wire core is using single beam or three beams.

It is preferred that, the internal shield and external shielding layer are using annealing red copper belt.

It is preferred that, the insulating barrier uses crosslinked polyetylene insulated layer.

Compared with prior art, the beneficial effects of the utility model are：By using three beams conductor wire core combination oxygen barrier layer And waterproof mineral shale, waterproof mineral shale can be hardened in high-temp combustion crust protection, play good thermal insulation protection, significantly Reduce catch fire state lower conductor temperature and reduce line drop, use hard silicon based ceramic fire-resistant polyolefin layer as every Oxygen layer, plays further flame-retardant effect, is difficult to melt using crosslinked polyetylene insulated layer in addition and is difficult to soften, metal Armor Material Strength itself is stable, and overall structure is greatly improved fire line, and can guarantee that cable is run under Fire Conditions Safety and stability, meets the fire-proof and water-proof requirement of fire-fighting, can also ensure enabling for safety protection equipment in building, electric property is steady Qualitative height.

Brief description of the drawings

Fig. 1 is structural section schematic diagram of the present utility model.

In figure：1- conductors, 2- internal shields, 3- insulating barriers, 4- external shielding layers, 5- waterproof mineral shales,

6- oxygen barrier layers, 7- glass belting layers, 8- metal armor layers, 9- external sheath layers.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belongs to the scope of the utility model protection.

Refer to shown in Fig. 1, a kind of midium voltage cable with fire prevention mineral mud, including three beams conductor wire core, the conduction It is enclosed with core outside conductor 1, the conductor 1 and is enclosed with internal shield 2, insulating barrier 3 and external shielding layer 4 successively, wherein interior Screen layer 2 and external shielding layer 4 using annealing red copper belt, can effectively prevent middle current voltage from externally disturbing, dual shield effect It is really good and play supplemental protective effect, it is difficult to melt using crosslinked polyetylene insulated layer and is difficult softening.Led in addition using three beams Electric wire cored structure, flexibility and fixing are moderate, very convenient to install and use, the three beams conductor wire core be integrally wrapped with every Oxygen layer 6, the oxygen barrier layer 6 is using hard silicon based ceramic fire-resistant polyolefin layer, and the thickness of oxygen barrier layer 6 is 3-6mm, can be effectively further Flame-retardant effect, and waterproof mineral shale 5, the waterproof ore deposit are mainly filled between three beams conductor wire core and oxygen barrier layer 6 Thing shale 5 can harden crust protection in high-temp combustion, play good thermal insulation protection, greatly reduce and led under the state of catching fire The temperature of body 1 and reduction line drop, thereby further ensure that the safe handling of electric wire and under the state of catching fire, are building Normal use of interior fire safety equipment provides guarantee.In addition outside product structure, outside the oxygen barrier layer 6 successively Glass belting layer 7, metal armor layers 8 and external sheath layer 9 are enclosed with, glass belting layer 7 can improve overall structure pliability, and will The metal armor layers 8 use galvanized steel strip metal armor layers, and the thickness of metal armor layers 8 is 1-2mm, it is ensured that Material Strength is steady It is fixed.External sheath layer 9 uses low-smoke halide-free fireproof composite polyolefine material, with fire-proof high-temperature resistant performance, and comprehensive cost performance is high.

Overall structure is by using three beams conductor wire core combination oxygen barrier layer 6 and waterproof mineral shale 5, it is ensured that in Fire Conditions Lower cable runs safety and stability, meets the fire-proof and water-proof requirement of fire-fighting, and can also ensure opening for safety protection equipment in building With electric property stability is high, and with reference to metal armor layers 8, material itself is reliable, and overall structure is greatly improved fixing and anti- Fire.

It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation Involved claim.

Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art It may be appreciated other embodiment.

Claims

1. a kind of midium voltage cable with fire prevention mineral mud, including some beam conductor wire cores, it is characterised in that：The conductor wire core Inside it is enclosed with outside conductor, the conductor and is enclosed with internal shield, insulating barrier and external shielding layer successively, whole beam conductor wires Core is integrally wrapped with oxygen barrier layer, and waterproof mineral shale, the oxygen barrier are filled between whole beam conductor wire cores and oxygen barrier layer Layer is outside to be enclosed with glass belting layer, metal armor layers and external sheath layer successively, and the metal armor layers are using galvanized steel strip gold Belong to armor.

2. a kind of midium voltage cable with fire prevention mineral mud according to claim 1, it is characterised in that：The oxygen barrier layer is adopted With hard silicon based ceramic fire-resistant polyolefin layer.

3. a kind of midium voltage cable with fire prevention mineral mud according to claim 1, it is characterised in that：The external sheath layer Using low-smoke halide-free fireproof composite polyolefine material.

4. a kind of midium voltage cable with fire prevention mineral mud according to claim 2, it is characterised in that：The oxygen barrier thickness Spend for 3-6mm.

5. a kind of midium voltage cable with fire prevention mineral mud according to claim 1, it is characterised in that：The metal armouring Thickness degree is 1-2mm.

6. a kind of midium voltage cable with fire prevention mineral mud according to claim 1, it is characterised in that：The conductor wire core Using single beam or three beams.

7. a kind of midium voltage cable with fire prevention mineral mud according to claim 1, it is characterised in that：The internal shield With external shielding layer using annealing red copper belt.

8. a kind of midium voltage cable with fire prevention mineral mud according to claim 1, it is characterised in that：The insulating barrier is adopted Use crosslinked polyetylene insulated layer.