CN210467373U

CN210467373U - Shielding fireproof cable

Info

Publication number: CN210467373U
Application number: CN201921620780.4U
Authority: CN
Inventors: 谢华军; 刘栋; 徐君诏; 王永康; 江盛菊
Original assignee: Chongqing Peite Electric Co ltd
Current assignee: Chongqing Peite Electric Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-05-05
Anticipated expiration: 2029-09-27

Abstract

The utility model relates to the technical field of wind field cables, in particular to a shielding fireproof cable; the damping rubber cable comprises a central air cushion, a flexible damping layer, a cable core and a rubber protective layer which are sequentially distributed from inside to outside; a reinforcing steel core is arranged between the adjacent wire cores; the wire core sequentially comprises a conductor, an inorganic mineral insulating layer, a mica layer and a first shielding layer from inside to outside; the gap between the wire core and the rubber protective layer is filled with an inorganic mineral oxygen insulation material, one side of the rubber protective layer is provided with an insulating layer, and one side of the insulating layer is provided with a fireproof layer; the outer wall of the fireproof layer is provided with a groove, the outer wall of the fireproof layer is provided with a lug, and a cavity is formed in the fireproof layer; a first armor layer is arranged on one side of the fireproof layer, a second armor layer is arranged on one side of the first armor layer, a second shielding layer is arranged on one side of the second armor layer, and a polyolefin jacket is arranged on one side of the second shielding layer; through simple structure, not only make cable shielding ability obtain the guarantee, improved the fire behavior of cable moreover to the cable flexibility is also fine.

Description

Shielding fireproof cable

Technical Field

The utility model relates to a wind field cable technical field especially relates to a shielding fireproof cable.

Background

Wind energy is increasingly gaining attention as a clean renewable energy source in all countries of the world. Since the 'renewable energy law' in 2006 became effective, the wind installation in China has gained rapid growth. According to the industry statistics, the accumulated grid-connected installed capacity reaches 1.84 hundred million kilowatts and accounts for 9.7 percent of the total power generation installed capacity when the year is 2018; therefore, the requirements for cables are also improved, and higher requirements on communication effects and fireproof effects are required; at present, the comprehensive effect of the shielding effect and the fireproof performance of a cable is poor, and the fireproof performance is neglected under the condition of improving communication in some cases; some neglect the communication effect under the condition of improving the fireproof performance; therefore, the comprehensive requirements of the fireproof performance and the shielding effect of the cable used in the wind field cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art not enough, provide a shielding fireproof cable.

The utility model provides a technical scheme that its technical problem adopted is:

a shielding fireproof cable is constructed, and comprises a central air cushion, a flexible damping layer, at least five wire cores and a rubber protective layer which are sequentially distributed from inside to outside; the wire cores are arranged on the outer side of the flexible damping layer in a surrounding mode, and a reinforcing steel core is arranged between every two adjacent wire cores; the cable core sequentially comprises a conductor, an inorganic mineral insulating layer, a mica layer and a first shielding layer from inside to outside; an inorganic mineral oxygen-insulating material is filled in a gap between the wire core and the rubber protective layer, an insulating layer is arranged on one side, away from the inorganic mineral oxygen-insulating material, of the rubber protective layer, and a fireproof layer is arranged on one side, away from the rubber protective layer, of the insulating layer; the outer wall of the fireproof layer is provided with a groove, protruding pieces are arranged on the two sides, close to the groove, of the outer wall of the fireproof layer, a cavity is formed in the fireproof layer, and the cavity is oval; the fire-proof layer deviates from one side of insulating layer is equipped with first armor, first armor deviates from one side of fire-proof layer is equipped with the second armor, the second armor deviates from one side of first armor is equipped with the second shielding layer, the second shielding layer deviates from one side of second armor is equipped with the polyolefin overcoat.

Shielding fireproof cable, wherein, the insulating layer includes guard net and rock wool layer, the rock wool layer is located the inboard of guard net, the internal connection on rock wool layer has a plurality of glass microballon.

Shielding fireproof cable, wherein, first armor is woven for thin steel wire and is formed.

Shielding fireproof cable, wherein, the second armor is ripple polymer coating steel band.

Shielding fireproof cable, wherein, the mica layer is in through wrapping the technology branch by the mica tape inorganic mineral substance insulating layer outside.

Shielding fireproof cable, wherein, inorganic mineral substance insulating layer adopts the preparation of magnesium oxide powder to form, its thickness is 0.9 mm.

Shielding fireproof cable, wherein, first armor, second armor and the polyolefin overcoat is the low halogen element material.

Shielding fireproof cable, wherein, strengthen the steel core all with adjacent the sinle silk is tangent.

Shielding fireproof cable, wherein, the second armor with the second shielding layer is sticky, the second shielding layer with the polyolefin overcoat is sticky.

Shielding fireproof cable, wherein, the conductor is formed for two piece at least soft copper conductor wire transposition.

The beneficial effects of the utility model reside in that: the utility model relates to a shielding fireproof cable utilizes the mica layer to guarantee the refractiveness and the insulating properties of cable, crosses inorganic mineral substance insulating layer, reaches the effect of protection user, through double-shield layer, reaches the effect to cable signal protection, has improved the communication effect greatly; the central air cushion and the flexible damping layer are adopted to support the cable core, so that the pressure resistance of the cable core is improved, the normal work under pressure is ensured, and meanwhile, the fireproof capacity is improved; by filling the inorganic mineral oxygen-insulating material and arranging the reinforcing steel core, the high-temperature resistance is further enhanced, the flexibility and the tensile strength of the cable are improved, and the problems of poor fire resistance and poor flexibility of the conventional cable are solved; the structure of the fire-proof layer is improved by adopting the convex pieces and the grooves on the fire-proof layer, so that the fire-proof layer can transmit heat in a conduction and radiation mode simultaneously, the heat dissipation rate of the fire-proof layer is accelerated, and the occurrence of fire can be effectively avoided; by arranging the double armor layers, the tensile capacity of the cable is enhanced, the corrosion resistance and impact resistance of the cable are enhanced, and the effect of protecting the cable is achieved by the polyolefin outer sleeve; through simple structure, not only make cable shielding ability obtain the guarantee, improved the fire behavior of cable moreover to the cable flexibility is also fine.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work according to the drawings:

fig. 1 is a schematic structural view of a shielded fireproof cable according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of the deployed configuration of the fire barrier;

FIG. 3 is a schematic diagram of the structure of a wire core;

the cable comprises a conductor 11, an inorganic mineral insulating layer 12, a mica layer 13, a first shielding layer 14, a central air cushion 21, a flexible shock absorption layer 22, a reinforced steel core 23, a rubber protective layer 31, an inorganic mineral oxygen insulation material 32, an insulating layer 33, a fireproof layer 34, a groove 341, a lug 342, a cavity 343, a first armor layer 35, a second armor layer 36, a second shielding layer 37 and a polyolefin jacket 38.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 shielding fireproof cable according to the preferred embodiment of the present invention, as shown in fig. 1-3, comprises a central air cushion 21, a flexible shock-absorbing layer 22, at least five wire cores and a rubber protective layer 31, which are sequentially distributed from inside to outside; the wire cores are arranged on the outer side of the flexible damping layer 22 in a surrounding mode, and a reinforcing steel core 23 is arranged between every two adjacent wire cores; the wire core sequentially comprises a conductor 11, an inorganic mineral insulating layer 12, a mica layer 13 and a first shielding layer 14 from inside to outside; an inorganic mineral oxygen-insulating material 32 is filled in a gap between the wire core and the rubber protective layer 31, an insulating layer 33 is arranged on one side of the rubber protective layer 31, which is far away from the inorganic mineral oxygen-insulating material 32, and a fireproof layer 34 is arranged on one side of the insulating layer 33, which is far away from the rubber protective layer 31; a groove 341 is formed in the outer wall of the fire-proof layer 34, protruding pieces 342 are arranged on the two sides, close to the groove 341, of the outer wall of the fire-proof layer 34, a cavity 343 is formed in the fire-proof layer 34, and the cavity 343 is oval; a first armor layer 35 is arranged on one side, away from the insulating layer 33, of the fire-proof layer 34, a second armor layer 36 is arranged on one side, away from the fire-proof layer 34, of the first armor layer 35, a second shielding layer 37 is arranged on one side, away from the first armor layer 35, of the second armor layer 36, and a polyolefin jacket 38 is arranged on one side, away from the second armor layer 36, of the second shielding layer 37; the mica layer 13 is used for ensuring the fire resistance and the insulating property of the cable and the inorganic mineral insulating layer 12, so that the effect of protecting a user is achieved, the effect of protecting the signal of the cable is achieved through the double shielding layers, and the communication effect is greatly improved; the central air cushion 21 and the flexible damping layer 22 are adopted to support the cable cores, so that the pressure resistance of the cable cores is improved, the normal work under pressure is ensured, and meanwhile, the fireproof capacity is improved; by filling the inorganic mineral oxygen-insulating material 32 and arranging the reinforcing steel core 23, the high-temperature resistance is further enhanced, the flexibility and the tensile strength of the cable are improved, and the problems of poor fire resistance and poor flexibility of the conventional cable are solved; the structure of the fire-proof layer 34 is improved by adopting the tabs 342 and the grooves 341 through the fire-proof layer 34, so that the fire-proof layer 34 can transmit heat in a conduction and radiation mode, the heat dissipation rate of the fire-proof layer 34 is increased, and the occurrence of fire can be effectively avoided; by arranging the double armor layers, the tensile capacity of the cable is enhanced, the corrosion resistance and impact resistance of the cable are also enhanced, and the effect of protecting the cable is achieved through the polyolefin jacket 38; through simple structure, not only make cable shielding ability obtain the guarantee, improved the fire behavior of cable moreover to the cable flexibility is also fine.

In addition, the insulating layer 33 of the present invention includes a protection net and a rock wool layer, the rock wool layer is located inside the protection net, and a plurality of glass beads are connected inside the rock wool layer; through thermoplastic extrusion with glass bead and rock wool layer, can make glass bead and rock wool layer cooperation use and insulate, still prevent fires simultaneously.

In addition, the first armor layer 35 of the present invention is formed by weaving thin steel wires; the cable is convenient for more effectively protecting the transmission of signals and preventing signal distortion, the thin steel wires are small in diameter and soft in texture, the cable core is soft and not hard after being woven, and the prepared cable is high in flexibility.

In addition, the second armor layer 36 of the present invention is a corrugated polymer coated steel tape; the corrugated polymer coated steel strip is a steel strip woven by thin steel wires formed by cold drawing after lead bath quenching, and the thin steel wires formed by cold drawing after lead bath quenching have the characteristics of high strength, elasticity, fatigue resistance, creep resistance, good toughness, smooth and clean surface, strong antirust capability, excellent music performance and the like.

In addition, the mica layer 13 of the present invention is wrapped by a mica tape and is wrapped outside the inorganic mineral insulating layer 12; the waterproof and moisture-proof performance is convenient to improve.

In addition, the inorganic mineral insulating layer 12 of the present invention is made of magnesia powder, and the thickness thereof is 0.9 mm; the magnesia powder does not contain any combustible medium, and has excellent fireproof performance and long service life.

In addition, the first armor layer 35, the second armor layer 36, and the polyolefin jacket 38 of the present invention are all low halogen materials; the combustion can be conveniently carried out without generating a large amount of toxic gas, and the secondary injury of personnel is reduced.

As shown in fig. 1, the reinforcing steel cores 23 are all tangent to the adjacent wire cores; further enhancing the high temperature resistance and improving the flexibility and the tensile resistance of the cable.

Furthermore, the second armor layer 36 of the present invention is adhered to the second shield layer 37, and the second shield layer 37 is adhered to the polyolefin jacket 38; the interference of an interphase electromagnetic field and an interphase signal is reduced conveniently.

In addition, the conductor 11 of the present invention is formed by twisting at least two soft copper conductors 11; the electromagnetic wave interference protection device is convenient to resist a part of external electromagnetic wave interference and can reduce the external interference of self signals.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims

1. A shielding fireproof cable is characterized by comprising a central air cushion, a flexible damping layer, at least five wire cores and a rubber protective layer which are sequentially distributed from inside to outside; the wire cores are arranged on the outer side of the flexible damping layer in a surrounding mode, and a reinforcing steel core is arranged between every two adjacent wire cores; the cable core sequentially comprises a conductor, an inorganic mineral insulating layer, a mica layer and a first shielding layer from inside to outside; an inorganic mineral oxygen-insulating material is filled in a gap between the wire core and the rubber protective layer, an insulating layer is arranged on one side, away from the inorganic mineral oxygen-insulating material, of the rubber protective layer, and a fireproof layer is arranged on one side, away from the rubber protective layer, of the insulating layer; the outer wall of the fireproof layer is provided with a groove, protruding pieces are arranged on the two sides, close to the groove, of the outer wall of the fireproof layer, a cavity is formed in the fireproof layer, and the cavity is oval; the fire-proof layer deviates from one side of insulating layer is equipped with first armor, first armor deviates from one side of fire-proof layer is equipped with the second armor, the second armor deviates from one side of first armor is equipped with the second shielding layer, the second shielding layer deviates from one side of second armor is equipped with the polyolefin overcoat.

2. The shielded fireproof cable of claim 1, wherein the insulation layer comprises a protective mesh and a rock wool layer, the rock wool layer is located on the inner side of the protective mesh, and a plurality of glass beads are connected to the interior of the rock wool layer.

3. The shielded fireproof cable of claim 1, wherein the first armor layer is a braided fine steel wire.

4. The shielded fireproof cable of claim 1, wherein the second armor layer is a corrugated polymer-coated steel tape.

5. The shielded fireproof cable of claim 1, wherein the mica layer is wrapped outside the inorganic mineral insulating layer by a mica tape through a wrapping process.

6. The shielded fireproof cable of claim 1, wherein the inorganic mineral insulating layer is made of magnesium oxide powder and has a thickness of 0.9 mm.

7. The shielded fireproof cable of claim 1, wherein the first armor layer, the second armor layer, and the polyolefin jacket are all low halogen materials.

8. The shielded fireproof cable of claim 1, wherein the reinforcing steel cores are each tangent to adjacent ones of the wire cores.

9. The shielded fireproof cable of claim 1, wherein the second armor layer is adhered to the second shield layer, and the second shield layer is adhered to the polyolefin jacket.

10. The shielded fireproof cable of any one of claims 1-9, wherein the conductor is formed by twisting at least two soft copper conductor wires.