CN213366170U - Mineral flexible insulating flame-retardant fireproof cable - Google Patents

Abstract

The utility model relates to the technical field of cables, and discloses a mineral flexible insulating flame-retardant fireproof cable, which comprises a cable body, a copper core twisted conductor and a rubber sheath layer, wherein the outer layer of the cable body is sleeved with the rubber sheath layer, the rubber sheath layer is wrapped with a flame-retardant layer which is in accordance with each other, the flame-retardant layer is wrapped with a mineral fireproof layer which is in accordance with each other, the mineral fireproof layer is wrapped with a buffer layer which is in accordance with each other, the buffer layer is sleeved with a corrugated aluminum sheath layer which is in accordance with each other, the corrugated aluminum sheath layer is wrapped with a mineral insulating layer which is in accordance with each other, a mineral belting layer which is in accordance with each other is sleeved in the mineral insulating layer, a plurality of groups of conductor shielding layers which are twisted are in accordance with each other are wrapped in the mineral belting layer, a plurality of copper core twisted conductors which are in accordance with each other are all sleeved in, the problem of low insulating flame retardant property can effectively improve the practicality of the fireproof cable.

Description

Mineral flexible insulating flame-retardant fireproof cable

Technical Field

The utility model relates to the technical field of cables, specifically be a fire-retardant fireproof cable of flexible insulation of mineral.

Background

The mineral insulated cable is a cable which uses a copper sheath to wrap a copper conductor core wire, uses magnesium oxide powder as an inorganic insulating material to isolate a conductor and the sheath, and can select a proper protective sleeve as required on the outermost layer, is commonly called MICC or MI cable.

For example, a flexible inorganic mineral insulated low-smoke halogen-free flame-retardant fireproof cable with Chinese patent application No. CN201620043785.5 comprises a wire core, a wrapping tape layer and an outer sheath, the cable core is formed by twisting the cable cores into a cable core, a wrapping tape layer is wrapped outside the cable core, the outer sheath is wrapped outside the wrapping tape layer, a fire-proof layer is filled in gaps among the cable cores and the outer sheath, the wire core is composed of a conductor, a fire-resistant layer and an insulating layer, the fire-resistant layer wraps the outside of the conductor, the outer part of the fire-resistant layer is extruded with an insulating layer, the conductor is an annealed copper wire, the fire-resistant layer is two layers of fire-resistant synthetic mica tapes, the insulating layer is a ceramic fireproof ethylene propylene diene monomer insulating layer, the fireproof layer is a densely extruded fireproof layer made of a mixture of aluminum hydroxide and sodium silicate, the wrapping band layer is a low-smoke halogen-free flame-retardant band, and the outer sheath is a low-smoke halogen-free flame-retardant band extruded ceramic fire-resistant polyethylene hydrocarbon outer sheath.

Above-mentioned utility model although can realize fireproof cable's use, nevertheless be not enough in the aspect of the flexibility, because the structure is complicated, can not ensure the problem of insulating fire behaviour, and the practicality is not high, to above-mentioned problem, for this reason, we have designed a flexible insulating fire-retardant fireproof cable of mineral.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a fire-retardant fireproof cable of mineral flexible insulation has solved the flexibility that proposes in the above-mentioned background not enough, problem that insulating flame retardant property is not high.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a fire-retardant fireproof cable of flexible insulating of mineral, includes cable body, copper core transposition conductor and rubber restrictive coating, the outer rubber restrictive coating that has cup jointed of cable body, and the fire-retardant layer that has wrapped up in mutually agreeing with in the rubber restrictive coating, the mineral matter flame retardant coating that has wrapped up in mutually agreeing with in the fire-retardant layer, and the buffer layer that has wrapped up in mutually agreeing with in the mineral matter flame retardant coating, the wrinkle aluminium jacket layer that has cup jointed mutually agreeing with in the buffer layer, and the mineral matter insulating layer that has wrapped up in mutually agreeing with in the wrinkle aluminium jacket layer, the mineral band layer that has wrapped up in mutually agreeing with in the mineral matter insulating layer, and the conductor shielding layer that has wrapped up in mutually in a plurality of groups transposition conductor shielding layer mutually, all cup jointed a plurality of copper.

Further, the rubber sheath layer can be made for the rubber material, and fire-retardant layer can be made for the polyolefin material, the mineral substance flame retardant coating can be made for the phenolic resin material, and the buffer layer can be made for the inorganic fiber material, wrinkle aluminium jacket layer can be made for the aluminium hydroxide material.

Further, the mineral insulating layer can be made of magnesium oxide, the mineral belting layer can be made of polytetrafluoroethylene dispersion resin, the conductor shielding layer can be made of a braided copper wire belt material, and the copper core stranded conductor can be made of pure copper.

Further, a plurality of groups of arc-shaped aluminum strips are welded on the periphery of the corrugated aluminum sleeve layer at equal intervals, a plurality of groups of arc-shaped grooves are formed in the periphery of the buffer layer inner ring at equal intervals, and the arc-shaped aluminum strips are meshed with the arc-shaped grooves and clamped tightly.

Furthermore, a bent slideway is arranged in the inner cavity of the mineral belting layer, the conductor shielding layer is positioned in the bent slideway and is in a tight bent winding shape, the copper core stranded conductor is in a bent stranded shape, a matched filling structure is wrapped between the bent slideway and the mineral belting layer, and the filling structure can be formed by tightly winding a glass fiber rope.

The utility model has the advantages that:

1. the utility model discloses a, cooperate through being equipped with arc aluminium strip and arc recess, be convenient for make wrinkle aluminium jacket layer and buffer layer mesh articulated mutually on the one hand, on the other hand is convenient for make cable body inner structure compactness better, the job stabilization nature of cable body has been improved relatively, simultaneously through arc aluminium strip and arc recess looks joint, be convenient for fix the flexible winding structure that copper core transposition conductor and conductor shield layer formed, make it difficult loose relatively, and then ensured the whole pliability of cable relatively, rethread rubber sheathing layer adopts the softwood matter, the whole flexibility of cable has further been improved, simultaneously through wrinkle aluminium jacket layer, be convenient for protect the inside erosion that does not receive external environment of cable influence, the corrosion resistance and the life of cable have been improved relatively.

2. The utility model discloses a, cooperate through being equipped with mineral band layer and crooked slide, be convenient for make the conductor shielding layer form crooked winding structure on the one hand, and then it is crooked transposition structure thereupon to drive copper core transposition conductor, make the cable body form the multicore transposition form, thereby it is higher to make up the back its resistance to folding, and then the power distribution of buckling, make the cable body softer, the flexibility of cable has further been improved, make the cable repeatable, many times crooked, cooperate through fire-retardant layer and mineral substance flame retardant coating, be convenient for utilize the characteristic of inorganic matter, make the cable body can not burn or combustion-supporting, even there is the burning of external flame, the cable still can normally work relatively, through the mineral substance insulating layer, be convenient for make it can not produce the naked light when transshipping or short circuit, and then ensured the safety in utilization of cable body relatively, the cable body utilizes the characteristic of mineral substance simultaneously, the, The cable has the advantages of light weight, reduced occupied space, convenient installation and relatively improved insulating and flame-retardant properties.

Drawings

FIG. 1 is a front view of the main structure of the present invention;

FIG. 2 is a sectional view of the main structure of the present invention;

FIG. 3 is a sectional view of the arc-shaped aluminum strip structure of the present invention;

fig. 4 is a sectional view of the curved slideway structure of the present invention.

In the figure: 1. a cable body; 2. a copper core stranded conductor; 3. a rubber sheath layer; 4. a flame retardant layer; 5. a mineral fire barrier; 6. a buffer layer; 7. wrinkling the aluminum jacket layer; 8. a mineral insulating layer; 9. a mineral belt layer; 10. a conductor shield layer; 11. an arc-shaped aluminum strip; 12. an arc-shaped groove; 13. bending the slideway; 14. filling the structure; 15. a glass fiber rope.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments, based on the embodiments in the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.

Referring to FIGS. 1-4: the utility model provides a fire-retardant fireproof cable of flexible insulating of mineral, including cable body 1, copper core transposition conductor 2 and rubber restrictive coating 3, 1 skin of cable body has cup jointed rubber restrictive coating 3, and the parcel has the fire-retardant layer 4 that agrees with mutually in the rubber restrictive coating 3, the parcel has the mineral matter flame retardant coating 5 that agrees with mutually in fire-retardant layer 4, and the parcel has the buffer layer 6 that agrees with mutually in the mineral matter flame retardant coating 5, the interior corrugated aluminum jacket layer 7 that agrees with mutually of buffer layer 6, and the parcel has the mineral matter insulating layer 8 that agrees with mutually in corrugated aluminum jacket layer 7, the mineral belting layer 9 that agrees with mutually is cup jointed in the mineral matter insulating layer 8, and the interior parcel of mineral belting layer 9 has the conductor shielding layer 10 that a plurality of groups of looks transposition, all cup jointed the copper core transposition conductor 2 that a plurality of looks agree with in the conductor shielding layer.

It should be noted that the rubber sheath layer 3 can be made of rubber, the flame retardant layer 4 can be made of polyolefin, the mineral fireproof layer 5 can be made of phenolic resin, the buffer layer 6 can be made of inorganic fiber, and the corrugated aluminum sheath layer 7 can be made of aluminum hydroxide, so that the cable body 1 can not burn or support combustion, and the cable can still work normally even if external flame burns.

Wherein, mineral substance insulating layer 8 can be made for the magnesium oxide material, and mineral band layer 9 can be made for polytetrafluoroethylene dispersion resin material, and conductor shielding layer 10 can be made for weaving the copper ribbon material, and copper core stranded conductor 2 can be made for pure copper material, is convenient for make the cable can not produce the naked light when transshipping or short circuit, and then has ensured the safety in utilization of cable body 1 relatively.

Wherein, the equidistant welding all around of 7 outer lanes on wrinkle aluminium jacket layer has a plurality of arc aluminium strips 11 of group, and buffer layer 6 inner lane equidistance all around has seted up a plurality of arc recesses 12 of group, and arc aluminium strip 11 meshes closely the joint with arc recess 12 mutually, is convenient for make 1 internal structure compactedness of cable body better, has improved cable body 1's job stabilization nature relatively.

The mineral belting layer 9 is internally provided with a bent slideway 13, the conductor shielding layer 10 is positioned in the bent slideway 13 and is in a tight bent winding shape, the copper core stranded conductor 2 is in a bent twisting shape, a filling structure 14 which is in fit with the bent slideway 13 and the mineral belting layer 9 is wrapped and connected, and the filling structure 14 can be formed by tightly winding a glass fiber rope 15, so that the conductor shielding layer 10 can form a bent winding structure, the cable body 1 can form a multi-core twisting shape, and the flexibility of the cable is further improved.

To sum up, the utility model discloses when using, cooperate through arc aluminium strip 11 and arc recess 12, be convenient for make wrinkle aluminium jacket layer 7 and buffer layer 6 mesh articulated mutually on the one hand, on the other hand is convenient for make 1 internal structure compactedness of cable body better, the job stabilization nature of cable body 1 has been improved relatively, simultaneously through arc aluminium strip 11 and arc recess 12 looks joint, be convenient for fix the flexible winding structure that copper core transposition conductor 2 and conductor shield 10 formed, make it be difficult for the pine to scatter relatively, and then ensured the whole pliability of cable relatively, rethread rubber sheath layer 3 adopts the softwood matter, the whole flexibility of cable has further been improved, simultaneously through wrinkle aluminium jacket layer 7, be convenient for protect cable inside not influenced by external environment's erosion, the corrosion resistance and the life of cable have been improved relatively.

Through the matching of the mineral belting layer 9 and the curved slideway 13, on one hand, the conductor shielding layer 10 is convenient to form a curved winding structure, and further the copper core stranded conductor 2 is driven to be in a curved stranded structure, so that the cable body 1 forms a multi-core stranded shape, the folding resistance is higher after combination, and further the bending force is distributed, the cable body 1 is softer, the flexibility of the cable is further improved, the cable can be repeatedly and repeatedly bent, the cable body 1 can not burn or support combustion through the matching of the flame-retardant layer 4 and the mineral fireproof layer 5, the characteristic of an inorganic substance is convenient to utilize, the cable body 1 can not burn or support combustion even if external flame burns, the cable can still work normally relatively, the mineral substance insulating layer 8 is convenient to generate open fire during overload or short circuit, the use safety of the cable body 1 is relatively ensured, meanwhile, the cable body 1 utilizes the characteristic of the mineral substance, and has, Light in weight, not only can reduce occupation space, the installation of being convenient for again has improved the insulating flame retardant property of cable body 1 relatively simultaneously.

The above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments without departing from the spirit or scope of the present invention.

Claims (5)

1. The utility model provides a fire-retardant fireproof cable of flexible insulating of mineral, includes cable body (1), copper core stranded conductor (2) and rubber restrictive coating (3), its characterized in that: the cable comprises a cable body (1), and is characterized in that a rubber sheath layer (3) is sleeved on the outer layer of the cable body (1), a flame-retardant layer (4) which is matched with each other is wrapped in the rubber sheath layer (3), a mineral fireproof layer (5) which is matched with each other is wrapped in the flame-retardant layer (4), a buffer layer (6) which is matched with each other is wrapped in the mineral fireproof layer (5), a corrugated aluminum sleeve layer (7) which is matched with each other is wrapped in the buffer layer (6), a mineral insulating layer (8) which is matched with each other is wrapped in the corrugated aluminum sleeve layer (7), a mineral belting layer (9) which is matched with each other is wrapped in the mineral belting layer (8), a plurality of groups of conductor shielding layers (10) which are twisted mutually are wrapped in the mineral belting layer (9), and a plurality of copper core twisted conductors (2) which are matched with each other are all sleeved in the conductor shielding layer.

2. The mineral flexible insulating flame-retardant fireproof cable according to claim 1, wherein: rubber restrictive coating (3) are made for the rubber material, and fire-retardant layer (4) are made for the polyolefin material, mineral substance flame retardant coating (5) are made for the phenolic resin material, and buffer layer (6) are made for the inorganic fiber material, wrinkle aluminium jacket layer (7) are made for the aluminium hydroxide material.

3. The mineral flexible insulating flame-retardant fireproof cable according to claim 1, wherein: the mineral insulating layer (8) is made of magnesium oxide, the mineral belting layer (9) is made of polytetrafluoroethylene dispersion resin, the conductor shielding layer (10) is made of a braided copper ribbon material, and the copper core stranded conductor (2) is made of pure copper.

4. The mineral flexible insulating flame-retardant fireproof cable according to claim 1, wherein: a plurality of groups of arc-shaped aluminum strips (11) are welded on the outer ring of the corrugated aluminum sleeve layer (7) at intervals, a plurality of groups of arc-shaped grooves (12) are formed in the inner ring of the buffer layer (6) at intervals, and the arc-shaped aluminum strips (11) are meshed with the arc-shaped grooves (12) to be tightly clamped.

5. The mineral flexible insulating flame-retardant fireproof cable according to claim 1, wherein: the mineral belting layer (9) is provided with a bent slideway (13) in the inner cavity, the conductor shielding layer (10) is positioned in the bent slideway (13) and is in a tight bent winding shape, the copper core stranded conductor (2) is in a bent twisting shape, a filling structure (14) which is in fit with the bent slideway (13) and the mineral belting layer (9) is wrapped, and the filling structure (14) is formed by tightly winding a glass fiber rope (15).

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