CN217740215U

CN217740215U - Novel mineral insulation fireproof cable

Info

Publication number: CN217740215U
Application number: CN202221148972.1U
Authority: CN
Inventors: 傅泽峰; 张瑞安; 彭祥治
Original assignee: Fujian Guocang Cable Industry Co ltd
Current assignee: Fujian Guocang Cable Industry Co ltd
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-11-04
Anticipated expiration: 2032-05-13

Abstract

The utility model discloses a novel mineral insulation fireproof cable, which comprises a cable body, the cable body includes conductor, mineral insulating layer, inorganic filling layer, bearing layer and elasticity filling layer, mineral insulating layer sets up outside at the bearing layer, the elasticity filling layer is filled inside the bearing layer, mineral insulating layer is outside at the conductor around the package, conductor and mineral insulating layer set up inside inorganic filling layer. The utility model discloses an at the inside bearing layer that sets up of cable body, the inner wall of bearing layer is provided with the fine rope of glass, and still be provided with the elasticity filling layer in the bearing layer inside, effectively reduce the weight of cable, the elasticity filling layer is irregularly filled in the bearing layer inside, make the cable pass through bearing layer and elasticity filling layer and can bear pressure and be difficult for taking place conductor fracture and deformation, the cable can not lead to the fact the influence to the conductor through only producing tiny deformation when receiving less pressure simultaneously, pressure disappearance back cable self restorable deformation.

Description

Novel mineral insulation fireproof cable

Technical Field

The utility model relates to a fireproof cable field specifically is a novel mineral insulation fireproof cable.

Background

The cable is usually a cable similar to a rope formed by twisting several or several groups of wires (at least two in each group), each group of wires are mutually insulated and usually twisted around a center, the whole outer surface is wrapped with a highly-insulated covering layer, the cable is erected in the air or is arranged underground or underwater for telecommunication or power transmission, and the mineral cable is also called a mineral insulated cable, has the advantages of high fire resistance, explosion-proof property, corrosion resistance, long service life and the like, and has important and positive significance for fire prevention.

Traditional flexible mineral insulated cable generally is used for the exploitation of mineral, and the mineral exploitation environment is generally all very dark, still can have some falling rocks for the cable receives external force extrusion very easily, leads to the cable fracture, and current fireproof cable can wrap up a lot of fire-proof material in order to guarantee good fire-proof ability simultaneously on the cable surface, leads to the bending capacity of cable relatively poor.

Disclosure of Invention

An object of the utility model is to provide a novel mineral insulation fireproof cable to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel mineral insulation fireproof cable, includes the cable body, the cable body includes conductor, mineral insulating layer, inorganic filling layer, bearing layer and elasticity filling layer, mineral insulating layer sets up outside at the bearing layer, the elasticity filling layer is filled inside the bearing layer, mineral insulating layer is outside at the conductor around the package, conductor and mineral insulating layer set up inside inorganic filling layer, cable body outside is provided with the protective layer.

Preferably, the outer parts of the mineral insulating layers are respectively tangent to the outer walls of the pressure bearing layers, the inner walls of the pressure bearing layers are provided with glass fiber ropes, and the elastic filling layers are polyurethane foaming agents.

Preferably, the protective layer comprises a wrapping tape, a mineral protective layer is arranged outside the wrapping tape, an embossing aluminum pipe is arranged outside the mineral protective layer, a protective layer is arranged outside the embossing aluminum pipe, and an outer sheath is fixedly connected to the outside of the protective layer.

Preferably, the wrapping tape is a glass fiber tape, the glass fiber tape is wrapped outside the inorganic filling layer, spiral grains are arranged on the surface of the embossed aluminum pipe, the protective layer is a ceramic silicon rubber tape, the ceramic silicon rubber tape is wrapped outside the embossed aluminum pipe, and the outer sheath is low-smoke halogen-free polyolefin.

Preferably, the protective layer comprises a wrapping tape, a protective layer is arranged outside the wrapping tape, and an outer sheath is arranged outside the protective layer.

Preferably, the wrapping tape is wrapped outside the inorganic filling layer, the protective layer is wrapped outside the wrapping tape, and the outer sheath is wrapped outside the protective layer in an extrusion molding manner.

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

the utility model discloses a through at the inside bearing layer that sets up of cable body, the inner wall of bearing layer is provided with the glass fine rope, and still be provided with the elastic filling layer in the bearing layer inside, effectively reduce the weight of cable, the elastic filling layer is at the inside irregular packing of bearing layer, make the cable bear pressure and be difficult for taking place conductor fracture and deformation through bearing layer and elastic filling layer, simultaneously the cable is under the effect of bearing layer and elastic filling layer, the cable produces tiny deformation through the bearing layer when receiving less pressure, and can not cause the influence to the conductor, cable self recoverable deformation after pressure disappears, and simultaneously, through inside bearing layer and the elastic filling layer of setting up, and set up the mineral protective layer in the cable outside, embossing aluminum pipe and inoxidizing coating, wherein through using the inoxidizing coating in the outside package of embossing aluminum pipe, further improve the heat-resisting ability of embossing aluminum pipe, simultaneously through setting up the spiral line in the outside of embossing aluminum pipe, make the cable have fine bending capacity.

Drawings

Fig. 1 is a schematic structural view of the novel mineral insulated fireproof cable of the present invention;

fig. 2 is a schematic structural view of the cable body of the present invention;

FIG. 3 is a schematic structural diagram of the protective layer of the present invention;

fig. 4 is another schematic structural diagram of the protective layer of the present invention.

In the figure: the cable comprises a cable body 1, a protective layer 2, a conductor 3, a mineral insulating layer 4, an inorganic filling layer 5, a pressure bearing layer 6, an elastic filling layer 7, a wrapping tape 8, a mineral protective layer 9, an embossed aluminum pipe 10, a protective layer 11 and an outer sheath 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 efforts all belong to the protection scope of the present invention.

Example 1

As shown in fig. 1, fig. 2 and fig. 3, the present invention provides an embodiment: the utility model provides a novel mineral insulation fireproof cable, includes cable body 1, cable body 1 includes conductor 3, mineral insulating layer 4, inorganic filling layer 5, bearing layer 6 and elasticity filling layer 7, mineral insulating layer 4 sets up in bearing layer 6 outsidely, elasticity filling layer 7 is filled inside bearing layer 6, mineral insulating layer 4 winds the package at conductor 3 outsidely, conductor 3 and mineral insulating layer 4 set up inside

inorganic filling layer

5, 1 outside protective layer 2 that is provided with of cable body.

In this embodiment, the outside of the mineral insulation layer 4 is tangent to the outer wall of the pressure-bearing layer 6, the inner wall of the pressure-bearing layer 6 is provided with glass fiber ropes, and the elastic filling layer 7 is specifically a polyurethane foaming agent.

The specific preparation process of the bearing layer 6 comprises the steps of firstly twisting a group of glass fiber thick ropes by using a plurality of glass fiber ropes, then externally arranging the one-layer bearing layer 6 on the glass fiber thick ropes in an extrusion molding mode, and then drawing out redundant glass fiber ropes in the glass fiber thick ropes.

And after the pressure bearing layer 6 is prepared, the elastic filling layer 7 is added into the pressure bearing layer 6, the elastic filling layer 7 is filled irregularly in the pressure bearing layer 6, and the elastic filling layer 7 can be interrupted and continuous in the pressure bearing layer 6.

Specifically, the protective layer 2 comprises a wrapping tape 8, a mineral protective layer 9 is arranged outside the wrapping tape 8, an embossed aluminum pipe 10 is arranged outside the mineral protective layer 9, a protective layer 11 is arranged outside the embossed aluminum pipe 10, an outer sheath 12 is fixedly connected to the outside of the protective layer 11, the wrapping tape 8 is specifically a mica tape, and the embossed aluminum pipe 10 is in oxygen-free seamless welding.

Further, the wrapping tape 8 is specifically a glass fiber tape, the glass fiber tape is wrapped outside the inorganic filling layer 5, spiral grains are arranged on the surface of the embossed aluminum pipe 10, the protective layer 11 is specifically a ceramic silicon rubber tape wrapped outside the embossed aluminum pipe 10, the outer sheath 12 is specifically low-smoke halogen-free polyolefin, a series of materials such as a mica tape, an aluminum pipe, the glass fiber tape and the ceramic silicon rubber tape are resistant to high temperature, and the insulating wire cores are protected by the aluminum pipe and the ceramic silicon rubber tape, so that the high-temperature resistant effect of the cable is better.

Example 2

As shown in fig. 1, fig. 2 and fig. 4, the present invention provides an embodiment: the utility model provides a novel mineral insulation fireproof cable, includes cable body 1, and cable body 1 includes conductor 3, mineral insulating layer 4, inorganic filling layer 5, bearing layer 6 and elasticity filling layer 7, and mineral insulating layer 4 sets up in bearing layer 6 outsidely, and elasticity filling layer 7 is filled inside bearing layer 6, and mineral insulating layer 4 winds package at conductor 3 outsidely, and conductor 3 and mineral insulating layer 4 set up inside inorganic filling layer 5, and cable body 1 outside is provided with protective layer 2.

Wherein, the concrete preparation process of bearing layer 6 does, uses the glass fiber rope of plural root to turn round into a set of glass fiber thick rope earlier, then sets up one deck bearing layer 6 externally with the mode of extrusion molding with the glass fiber thick rope, then takes unnecessary glass fiber rope out in the glass fiber thick rope.

Specifically, the protective layer 2 comprises a wrapping tape 8, a protective layer 11 is arranged outside the wrapping tape 8, and an outer sheath 12 is arranged outside the protective layer 11.

Further, band 8 is around wrapping outside inorganic filling layer 5, and the inoxidizing coating 11 is around wrapping outside band 8, and oversheath 12 wraps up outside inoxidizing coating 11 with the mode of extrusion molding.

Wherein, band 8 and inoxidizing coating 11 are wrapped up in the outside of inorganic filling layer 5 with the form of continuous lapping, have so effectively improved work efficiency.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel mineral insulation fireproof cable, includes cable body (1), its characterized in that: cable body (1) includes conductor (3), mineral insulating layer (4), inorganic filling layer (5), bearing layer (6) and elastic filling layer (7), mineral insulating layer (4) set up in bearing layer (6) outside, elastic filling layer (7) are filled inside bearing layer (6), mineral insulating layer (4) are around the package at conductor (3) outside, conductor (3) and mineral insulating layer (4) set up inside inorganic filling layer (5), cable body (1) outside is provided with protective layer (2).

2. The novel mineral insulated fireproof cable of claim 1, wherein: the mineral insulation layer (4) is externally tangent to the outer wall of the pressure bearing layer (6) respectively, the inner wall of the pressure bearing layer (6) is provided with glass fiber ropes, and the elastic filling layer (7) is specifically a polyurethane foaming agent.

3. A novel mineral insulated fireproof cable according to claim 1 or 2, wherein: the protective layer (2) comprises a wrapping tape (8), a mineral protective layer (9) is arranged outside the wrapping tape (8), an embossing aluminum pipe (10) is arranged outside the mineral protective layer (9), a protective layer (11) is arranged outside the embossing aluminum pipe (10), and an outer protective sleeve (12) is fixedly connected to the outside of the protective layer (11).

4. A novel mineral insulated fireproof cable according to claim 3, wherein: band (8) specifically are glass fiber tape, and glass fiber tape is around the package in inorganic filling layer (5) outside, embossing aluminum pipe (10) surface is provided with the spiral line, inoxidizing coating (11) specifically are ceramic silicon rubber area around the package in embossing aluminum pipe (10) outside, oversheath (12) specifically are low smoke and zero halogen polyolefin.

5. A novel mineral insulated fireproof cable according to claim 1 or 2, wherein: the protective layer (2) comprises a wrapping tape (8), a protective layer (11) is arranged outside the wrapping tape (8), and an outer sheath (12) is arranged outside the protective layer (11).

6. The novel mineral-insulated fireproof cable according to claim 5, wherein: the wrapping tape (8) is wrapped outside the inorganic filling layer (5), the protective layer (11) is wrapped outside the wrapping tape (8), and the outer sheath (12) is wrapped outside the protective layer (11) in an extrusion molding mode.