CN212276879U - Tensile flexible mineral insulation copper sheath fireproof cable - Google Patents

Abstract

The utility model discloses a flexible mineral insulation copper sheath fireproof cable of tensile type, including the main part sinle silk, and locate the outside low smoke and zero halogen flame retardant polyolefin oversheath of main part sinle silk, the main part sinle silk is by alkali-free glass silk ribbon parcel layer, alkali-free glass silk filling layer, it constitutes to strengthen steel wire core and conductive core, be equipped with the filler strip in the alkali-free glass silk filling layer, conductive core is by the insulating layer, the wire comprises the conductor filling layer of locating wire clearance department, be equipped with the functional layer between main part sinle silk and the low smoke and zero halogen flame retardant polyolefin oversheath, the functional layer is by fire-retardant layer, copper sheathing layer and wearing layer are constituteed, the outside of low smoke and zero halogen flame retardant polyolefin. The utility model discloses the enhancement steel wire core, the packing strip, fire-retardant layer, copper sheathing layer, wearing layer and the high temperature resistant coating that set up make performances such as tensile, fire prevention, wear-resisting shielding of this flexible mineral insulation copper sheathing fireproof cable improve greatly, the construction installation of being convenient for, and be favorable to improving the life of cable conductor.

Description

Tensile flexible mineral insulation copper sheath fireproof cable

Technical Field

The utility model relates to a wire and cable technical field specifically is a flexible mineral insulation copper sheath fireproof cable of tensile type.

Background

The mineral insulation copper sheath fireproof cable has the following advantages: 1. the fireproof performance is good, the limit temperature is 1083 ℃, the material is non-toxic when being combusted, and the integrity of the circuit can be kept when the material is combusted for 3 hours at the flame temperature of 950 ℃ and 1000 ℃; 2. the current-carrying capacity is large, and according to the characteristic of the current-carrying capacity of the conductor, under the condition that the sectional areas are the same, the number of electrons passing through a plurality of wires in the same time is larger than that of a single wire; 3. the flexibility is good, can become the dish transportation. Therefore, the mineral insulated copper sheathed fireproof cable is widely applied to various fields.

Through retrieval, the flexible mineral insulating copper sheath fire-resistant cable with the publication number of CN207397757U comprises a conductive wire core, a composite insulating layer of ceramic silicon rubber and high-quality fire-resistant mica tape, a low-smoke halogen-free filling rod, an alkali-free glass fiber wrapping tape, an embossing copper sheath and a low-smoke halogen-free fire-resistant polyolefin outer sheath, wherein the ceramic silicon rubber and the high-quality fire-resistant mica tape composite insulating layer are coated on the outer side of the conductive wire core, the alkali-free glass fiber wrapping tape is coated on the outer side of the composite insulating wire core, the embossing copper sheath is coated on the outer side of the alkali-free glass fiber wrapping tape, and the low-smoke halogen-free fire-resistant polyolefin outer sheath is coated on the outer side of the embossing copper sheath. And mineral insulation copper sheath fireproof cable continuous length is long, and longest length can reach 2000 meters, and above-mentioned scheme improves the pull resistance of cable conductor through adding low smoke and zero halogen filling rod, and under high pulling force, pull resistance is obvious not enough, leads to the tensile production of low smoke and zero halogen fire-retardant polyolefin oversheath and embossing copper sheath to warp easily, influences flexible mineral insulation copper sheath fireproof cable's life. Therefore, the tensile flexible mineral insulation copper sheath fireproof cable is designed and used for solving the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flexible mineral insulation copper sheath fireproof cable of tensile type to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a tensile flexible mineral insulation copper sheath fireproof cable comprises a main body wire core and a low-smoke halogen-free flame-retardant polyolefin outer sheath arranged outside the main body wire core, the main body wire core mainly comprises an alkali-free glass ribbon wrapping layer, an alkali-free glass fiber filling layer, a reinforced steel wire core and a conductive wire core, the filling layer of the alkali-free glass fiber is internally provided with a filling strip, the reinforced steel wire core is arranged in the middle of the main body wire core, the conductive wire core is arranged outside the reinforced steel wire core, the conductive wire core consists of an insulating layer, a conductive wire and a conductor filling layer arranged at the gap of the conductive wire, a functional layer is arranged between the main body wire core and the low-smoke halogen-free flame-retardant polyolefin outer sheath, the functional layer consists of a flame-retardant layer, a copper sheath layer and a wear-resistant layer, the inside of wearing layer is located to the copper sheathing jacket layer cover, the inside on copper sheathing jacket layer is located to fire-retardant layer cover, the outside of low smoke and zero halogen fire-retardant polyolefin oversheath is equipped with high temperature resistant coating.

Preferably, the number of the conductive wire cores is four.

Preferably, the filler strip is a thin steel wire.

Preferably, the insulating layer is made of ceramic silicone rubber and fire-resistant mica tape.

Preferably, the flame-retardant layer is made of a plurality of layers of fire-resistant mica tapes.

Preferably, the copper sheathing layer is made of an embossed copper sheathing.

Preferably, the high-temperature resistant coating is prepared by uniformly coating phosphate lead powder inorganic paint.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up in the inside of main part sinle silk and strengthen the steel wire core, and set up the packing in situ, make this flexible mineral insulation copper sheath fireproof cable's tensile type improve greatly, the construction installation of being convenient for is favorable to improving the life of cable conductor simultaneously.

2. The utility model discloses a set up the conductor filling layer in wire clearance department, be favorable to improving conductive wire core's electric conductivity and transmission efficiency.

3. The utility model discloses a set up fire-retardant layer and set up high temperature resistant coating in the outside of low smoke and zero halogen fire-retardant polyolefin oversheath in the functional layer, effectively improve this flexible mineral insulation copper sheath fireproof cable's fire resistance, further improve the life of cable conductor.

4. The utility model discloses a set up the wearing layer in the functional layer, make this flexible mineral insulation copper sheath fireproof cable have better wearability, further improve the life of cable conductor.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention.

Fig. 2 is the schematic diagram of the cross-sectional structure of the conductive wire core of the present invention.

Fig. 3 is a schematic cross-sectional structure diagram of the functional layer of the present invention.

In the figure: 1. A main body wire core; 2. a low-smoke halogen-free flame-retardant polyolefin outer sheath; 3. an alkali-free glass ribbon wrapping layer; 4. an alkali-free glass fiber filler layer; 5. reinforcing the steel wire core; 6. a conductive wire core; 7. filling the strip; 8. an insulating layer; 9. a wire; 10. a conductor fill layer; 11. a functional layer; 12. a flame retardant layer; 13. a copper jacket layer; 14. a wear layer; 15. and (3) high-temperature resistant coating.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the utility model provides a tensile flexible mineral insulating copper sheath fireproof cable, which comprises a main core 1 and a low-smoke halogen-free flame retardant polyolefin outer sheath 2 arranged outside the main core 1, wherein the main core 1 mainly comprises an alkali-free glass ribbon wrapping layer 3, an alkali-free glass fiber filling layer 4, a reinforced steel wire core 5 and a conductive core 6, a filling strip 7 is arranged in the alkali-free glass fiber filling layer 4, the reinforced steel wire core 5 is arranged in the middle of the main core 1, the reinforced steel wire core 5 is arranged to greatly improve the tensile resistance of the flexible mineral insulating copper sheath fireproof cable, facilitate construction and installation and improve the service life of the cable, the conductive core 6 is arranged outside the reinforced steel wire core 5, and the conductive core 6 comprises an insulating layer 8, a conductive wire 9 and a conductor filling layer 10 arranged in the gap of the conductive wire 9, the conductor filling layer 10 that sets up is favorable to improving conductive core 6's conducting power and transmission efficiency, be equipped with functional layer 11 between main part sinle silk 1 and the fire-retardant polyolefin oversheath 2 of low smoke and zero halogen, functional layer 11 comprises fire-retardant layer 12, copper sheathing layer 13 and wearing layer 14, and the wearing layer 14 of setting makes this flexible mineral insulation copper sheathing fireproof cable have better wearability, further improves the life of cable conductor, the inside of wearing layer 14 is located to the 13 covers of copper sheathing layer, the inside of copper sheathing layer 13 is located to fire-retardant layer 12 covers, the outside of fire-retardant polyolefin oversheath 2 of low smoke and zero halogen is equipped with high temperature resistant coating 15.

As the utility model discloses an optimal scheme, conductive core 6 is equipped with four, makes this flexible mineral insulation copper sheath fireproof cable be fit for doing the trunk line cable, effectively improves the transmission efficiency of cable simultaneously.

As the utility model discloses an optimal scheme, packing 7 is thin steel wire, and packing 7 of setting can improve this flexible mineral insulation copper sheath fireproof cable's tensile.

As the preferred scheme of the utility model, insulating layer 8 is made by ceramic silicon rubber and fire resistant mica tape, and insulating layer 8 made by ceramic silicon rubber and fire resistant mica tape has insulating nature good, improves the transmission efficiency of cable.

As the utility model discloses an optimal scheme, fire-retardant layer 12 is made by the fire-resistant mica tape parcel of multilayer, and fire-retardant layer 12 made by the fire-resistant mica tape parcel of multilayer has flame retardant efficiency good, effectively improves the whole fire behavior of this flexible mineral insulation copper sheath fireproof cable.

As the utility model discloses an optimal scheme, copper sheathing layer 13 is made by the embossing copper sheathing, and the copper sheathing layer 13 of setting can shield interference information, avoids producing the interference to signal, control wire and cable transmission's information, and need not the poling, improves its corrosion resistance, and its copper sheathing layer 13 is good conductor, is the best earth connection, and arrives cable overall length in succession, has improved cable ground protection sensitivity and reliability greatly.

As the utility model discloses a preferred scheme, high temperature resistant coating 15 is evenly paintd by phosphate lead powder inorganic coating and is made, and the high temperature resistant coating 15 of setting can further improve this flexible mineral insulation copper sheath fireproof cable's fire resistance.

When the utility model is manufactured, a plurality of copper conductors are taken firstly, are wound to form a lead 9, and are added with a conductor filling layer 10 to the inside to obtain a conductive wire core body, the outside of the conductive wire core body is wrapped with an insulating layer 8 to complete the manufacture of the conductive wire core 6, then the manufactured conductive wire core 6 is arranged at the outside of a reinforced steel wire core 5, a non-alkali glass fiber filling layer 4 (a filling strip 7 is arranged at a large gap part) is arranged at the gap part between the conductive wire core 6 and the reinforced steel wire core 5 to obtain a wire core body, the outside of the wire core body is wrapped with a non-alkali glass fiber tape wrapping layer 3 to complete the manufacture of a main body wire core 1, then a flame retardant layer 12, a copper sheath layer 13, a wear-resistant layer 14 and a low-smoke halogen-free flame retardant polyolefin outer sheath 2 are sequentially arranged at the outside of the manufactured main body wire core 1, and finally a high temperature resistant, and finishing the manufacture of the flexible mineral insulation copper sheath fireproof cable.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. The utility model provides a flexible mineral insulation copper sheath fireproof cable of tensile type, includes main part sinle silk (1) to and locate main part sinle silk (1) outside low smoke and zero halogen fire-retardant polyolefin oversheath (2), main part sinle silk (1) is by alkali-free glass ribbon parcel layer (3), alkali-free glass silk filling layer (4), strengthens steel wire core (5) and conductive core (6) and constitutes, be equipped with filler strip (7) in alkali-free glass silk filling layer (4), strengthen the middle part that steel wire core (5) were located main part sinle silk (1), conductive core (6) are located the outside of strengthening steel wire core (5), just conductive core (6) comprise insulating layer (8), wire (9) and conductor filling layer (10) of locating wire (9) clearance department, be equipped with functional layer (11) between main part sinle silk (1) and low smoke and zero halogen fire-retardant polyolefin oversheath (2), functional layer (11) comprise fire-retardant layer (12), copper sheathing layer (13) and wearing layer (14), the inside of wearing layer (14) is located to copper sheathing layer (13) cover, the inside of copper sheathing layer (13) is located to fire-retardant layer (12) cover, the outside of low smoke and zero halogen fire-retardant polyolefin oversheath (2) is equipped with high temperature resistant coating (15).

2. The flexible mineral insulated copper sheathed fireproof cable of claim 1, wherein: the number of the conductive wire cores (6) is four.

3. The flexible mineral insulated copper sheathed fireproof cable of claim 1, wherein: the filling strips (7) are thin steel wires.

4. The flexible mineral insulated copper sheathed fireproof cable of claim 1, wherein: the insulating layer (8) is made of ceramic silicon rubber and a fire-resistant mica tape.

5. The flexible mineral insulated copper sheathed fireproof cable of claim 1, wherein: the flame-retardant layer (12) is made by wrapping a plurality of layers of fire-resistant mica tapes.

6. The flexible mineral insulated copper sheathed fireproof cable of claim 1, wherein: the copper sheath layer (13) is made of an embossed copper sheath.

7. The flexible mineral insulated copper sheathed fireproof cable of claim 1, wherein: the high-temperature resistant coating (15) is prepared by uniformly coating phosphate lead powder inorganic coating.

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