CN210123652U

CN210123652U - High-performance fireproof cable

Info

Publication number: CN210123652U
Application number: CN201920003086.1U
Authority: CN
Inventors: 曾凡令; 刘柏阳; 靳飞; 张军
Original assignee: CHENGDU DEYUAN WIRES AND CABLES Co Ltd
Current assignee: CHENGDU DEYUAN WIRES AND CABLES Co Ltd
Priority date: 2019-01-02
Filing date: 2019-01-02
Publication date: 2020-03-03
Anticipated expiration: 2029-01-02

Abstract

The utility model discloses a high performance fireproof cable, the cable core comprises a cable core, the cable core outside is equipped with the sheath, is provided with outer flame retardant coating between cable core and the sheath, and the cable core comprises a plurality of insulation core, and a plurality of insulation core are the annular setting, and it has flame retardant material to fill between a plurality of insulation core, is equipped with the conductor in every insulation core, and the conductor has wrapped up interior flame retardant coating and insulating layer outward in proper order. The utility model discloses a high performance fireproof cable sealing performance is good, does not absorb moisture, and soft elasticity, bending property is good, and fire resistance is good, and the cable has long-term fire resistance and insulating properties, and the practicality is stronger.

Description

High-performance fireproof cable

Technical Field

The utility model relates to a wire and cable technical field, concretely relates to high performance fireproof cable.

Background

Along with the rapid development of national economy, important engineering facilities such as subways, power plants, nuclear power plants, tunnels and the like, intelligent communities and large buildings, particularly high-rise buildings, extra-high-rise buildings and other intensive occasions of personnel are more and more, national and local design regulations clearly require that some lines need to adopt fire-resistant cables, some lines such as a trunk line of a fire-fighting power supply, a fire-resistant water pump, a fire-fighting control room, smoke-proof and smoke-exhaust equipment and a power supply line of a fire elevator adopt fire-resistant cables with the fire-resistant temperature of 950 ℃ and the continuous power supply time of 180min, namely fire-resistant cables, and flexible fire-resistant cables are needed in some occasions with complicated laying environments.

The cable is various in the market at present, and the fire prevention cable that commonly uses has rigidity fire prevention cable, compares rigidity fire prevention cable soft embossing copper sheath or aluminium sheath fire prevention cable, adopts fire-resistant mica tape and crowded nonmetal sheath fire prevention cable of wrapping the fire clay. The rigid fireproof cable has the defects of poor bending performance, limited production length, difficult installation and laying, easy dampness at a joint and low cost performance; the corrugated copper sheath has the defects of poor bending performance, poor treatment of joints, damp and low cost performance; the aluminum sheath fireproof cable has the defects of poor bending performance; the fireproof cable with the non-metal sheath and the fireproof mica tape and the extruded fireproof clay has the defect that the mica tape and the fireproof clay are damaged after the cable is bent for many times, so that the fireproof performance of the cable is influenced, and a high-performance fireproof cable is urgently needed at present.

Disclosure of Invention

To the problem that above-mentioned prior art exists, the utility model provides a high performance fireproof cable provides a sealing performance is good, not moisture absorption, and soft elasticity, bending property is good, and fire resistance is good, and the cable has long-term fire resistance and insulating properties.

In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a high performance fireproof cable, includes the cable core, the cable core outside is equipped with the sheath, is provided with outer flame retardant coating between cable core and the sheath, and the cable core comprises a plurality of insulation core, and a plurality of insulation core are the annular setting, and it has fire-retardant material to fill between a plurality of insulation core, is equipped with the conductor in every insulation core, and the conductor wraps up in proper order outward has interior flame retardant coating and insulating layer.

Preferably, the conductor, inner flame retardant layer and insulating layer are concentrically arranged.

In any of the above embodiments, the conductor is preferably formed by a multi-strand metal-plated soft copper conductor or a metal-non-plated soft copper conductor.

In any of the above schemes, preferably, the inner fireproof layer is a silicon rubber ceramic band.

Preferably, in any of the above embodiments, the insulating layer is a thermoplastic or thermosetting insulating layer.

In any of the above embodiments, preferably, the insulating layer is a polyethylene or crosslinked polyethylene insulating layer.

Preferably in any of the above embodiments, the sheath is a thermoplastic or thermoset sheath.

In any of the above schemes, preferably, the cable core is composed of five insulated wire cores, and the five insulated wire cores are annularly arranged.

In any of the above embodiments, preferably, the plurality of insulated wire cores are arranged in parallel in the sheath.

In any of the above embodiments, preferably, the multi-strand metal-plated soft copper conductor or the metal-free soft copper conductor is stranded in a bundle shape.

In any of the above schemes, preferably, the insulating layer is extruded on the surface of the inner fireproof layer to form an outer cladding layer of the insulating wire core.

In any of the above embodiments, the sheath is preferably one of a polyethylene sheath, a crosslinked polyethylene sheath, and a flame-retardant polyolefin sheath.

In any of the above schemes, preferably, the flame retardant material is a halogen-containing flame retardant material, a low-smoke low-halogen flame retardant material or a halogen-free flame retardant material.

The utility model has the advantages that:

1) the utility model discloses a high performance fireproof cable's conductor comprises stranded annealed copper line, and copper line diameter is little, the radical is many, and bend radius is little, is convenient for lay the construction.

2) The utility model discloses a high performance fireproof cable's conductor can be the soft copper conductor of metal coating, has improved the corrosion resisting property of conductor.

3) The utility model discloses a high performance fireproof cable's flame retardant coating is the pottery silicone rubber area, and sealing performance is good, does not absorb moisture, and soft elasticity, bending property is good, can not harm and keep its fire resistance through the bending repeatedly, has guaranteed the long-term fire resistance and the insulating properties of cable.

4) The utility model discloses a high performance fireproof cable's insulating layer is thermoplasticity or thermosetting insulating. The polyethylene or cross-linked polyethylene insulation is a hydrophobic material, has good water-blocking and moisture-proof performance and excellent insulating performance; the cross-linked flame-retardant polyolefin insulation has better flame retardant property, is halogen-free, low-smoke and environment-friendly; the maximum insulation working temperature of the crosslinked polyethylene or the crosslinked polyolefin can reach 150 ℃, so that the working temperature of the cable can be increased or the service life of the cable can be prolonged; the elastomer has good insulation flexibility.

5) The utility model discloses a high performance fireproof cable's filler is fire-retardant material, and its operating temperature keeps unanimous with the cable, has strengthened the flame retardant property of cable.

6) The utility model discloses an outer flame retardant coating of cable core of high performance fireproof cable is the pottery silicone rubber area, further guarantees the fire resistance of cable.

7) The utility model discloses a high performance fireproof cable's sheath is thermoplasticity or thermosetting sheath, selects the oversheath material according to the operational environment of cable: the polyethylene sheath or the cross-linked polyethylene sheath is made of hydrophobic materials, so that the water-blocking and moisture-proof performance of the cable can be improved; the flame-retardant polyolefin sheath has the characteristics of flame retardance, no halogen and low smoke, and can realize the flame retardance, no halogen and low smoke of the cable; the maximum working temperature of the crosslinked polyethylene or crosslinked polyolefin sheath can reach 150 ℃, so that the working temperature of the cable can be increased or the service life of the cable can be prolonged; the elastomer sheath is good in flexibility, and the flexibility of the cable can be improved.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the high-performance fireproof cable of the present invention;

fig. 2 is a schematic structural view of another preferred embodiment of the high-performance fireproof cable of the present invention;

fig. 3 is a schematic structural view of another preferred embodiment of the high-performance fireproof cable of the present invention;

fig. 4 is a schematic structural view of another preferred embodiment of the high-performance fireproof cable of the present invention;

fig. 5 is a schematic structural diagram of another preferred embodiment of the high-performance fireproof cable of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Example 1

In order to realize the purpose, the utility model discloses a technical scheme is:

as shown in fig. 1, a high performance fireproof cable, including cable core 7, cable core 7 outside is equipped with sheath 6, is provided with outer flame retardant coating 5 between cable core 7 and the sheath 6, and cable core 7 comprises five insulation core 71, and five insulation core 71 are the annular setting, and it has flame retardant material 4 to fill in a plurality of adjacent insulation core 71's the space, constitutes cable core 7 with insulation core 71. The working temperature of the flame retardant material 4 is consistent with that of the cable, so that the flame retardant property of the cable is enhanced. Each insulated wire core is internally provided with a conductor 1, and the conductor 1 is formed by a plurality of strands of metal-plated layer soft copper conductors. Of course, the number of the insulated wire cores 71 in the cable core 7 is not limited, and may be, for example, 1 to 4, as shown in fig. 2 to 5.

Stranded metal-plated layer soft copper conductor transposition is the bundle form, has improved the corrosion resisting property of conductor, and is specific, and the conductor comprises stranded soft copper line, and the copper line diameter is little, the radical is many, and bending radius is little, is convenient for lay the construction.

The conductor 1 is wrapped with an inner fireproof layer 2 and an insulating layer 3 in sequence. The inner fireproof layer 2 is a ceramic silicon rubber belt and wraps the conductor 1. The ceramic silicon rubber belt has good sealing performance, is not hygroscopic, is soft and elastic, has good bending performance, can not be damaged by repeated bending, keeps the fire resistance, and ensures the long-term fire resistance and the insulation performance of the cable.

The insulating layer 3 is thermoplastic or thermosetting insulation, and is extruded on the surface of the fireproof layer 2 in each core to form an outer coating of the insulated wire core. The sheath 6 is a thermoplastic or thermosetting sheath, and the sheath 6 is extruded outside the outer fireproof layer 5. The insulating layer 3 is extruded on the surface of the inner fireproof layer 2 to form an insulating wire core outer coating.

The utility model discloses the technical scheme who further optimizes is that insulating layer 3 is polyethylene or crosslinked polyethylene insulating. Specifically, the polyethylene or crosslinked polyethylene insulation is a hydrophobic material, has good water-blocking and moisture-proof performance and excellent insulating performance; the cross-linked flame-retardant polyolefin insulation has better flame retardant property, is halogen-free, low-smoke and environment-friendly; the maximum insulation working temperature of the crosslinked polyethylene or the crosslinked polyolefin can reach 150 ℃, so that the working temperature of the cable can be increased or the service life of the cable can be prolonged; the elastomer has good insulation flexibility.

The sheath 6 is any one of a polyethylene sheath, a cross-linked polyethylene sheath or a flame-retardant polyolefin sheath. The polyethylene sheath or the cross-linked polyethylene sheath is made of hydrophobic materials, so that the water-blocking and moisture-proof performance of the cable can be improved; the flame-retardant polyolefin sheath has the characteristics of flame retardance, no halogen and low smoke, and can realize the flame retardance, no halogen and low smoke of the cable; the maximum working temperature of the crosslinked polyethylene or crosslinked polyolefin sheath can reach 150 ℃, so that the working temperature of the cable can be increased or the service life of the cable can be prolonged; the elastomer sheath is good in flexibility, and the flexibility of the cable can be improved.

Example 2

The utility model provides a high performance fireproof cable, is different from embodiment 1, including

cable core

7, 7 outsides of cable core are equipped with sheath 6, are provided with outer flame retardant coating 5 between cable core 7 and the sheath 6, and cable core 7 comprises a plurality of insulation core 71, and a plurality of insulation core 71 are the annular setting, and it has flame retardant material 4 to fill between a plurality of insulation core 71, is equipped with conductor 1 in every insulation core, and conductor 1 wraps up in proper order outward has interior flame retardant coating 2 and insulating layer 3.

Example 3

cable core

7, 7 outsides of cable core are equipped with sheath 6, are provided with outer flame retardant coating 5 between cable core 7 and the sheath 6, and cable core 7 comprises a plurality of insulation core 71, and a plurality of insulation core 71 are the annular setting, and it has flame retardant material 4 to fill between a plurality of insulation core 71, is equipped with conductor 1 in every insulation core, and conductor 1 wraps up in proper order outward has interior flame retardant coating 2 and insulating layer 3, conductor 1 is stranded non-metallized layer soft copper conductor constitution.

Example 4

cable core

7, 7 outsides of cable core are equipped with sheath 6, are provided with outer flame retardant coating 5 between cable core 7 and the sheath 6, and cable core 7 comprises a plurality of insulation core 71, and a plurality of insulation core 71 are the annular setting, and it has flame retardant material 4 to fill between a plurality of insulation core 71, is equipped with conductor 1 in every insulation core, and conductor 1 wraps up in proper order outward has interior flame retardant coating 2 and insulating layer 3, and a plurality of insulation core 71 parallel arrangement are in sheath 6.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. A high-performance fireproof cable comprises a cable core (7), and is characterized in that a sheath (6) is arranged outside the cable core (7), an outer fireproof layer (5) is arranged between the cable core (7) and the sheath (6), the cable core (7) is composed of a plurality of insulating wire cores (71), the insulating wire cores (71) are annularly arranged, flame-retardant materials (4) are filled among the insulating wire cores (71), a conductor (1) is arranged in each insulating wire core, and an inner fireproof layer (2) and an insulating layer (3) are sequentially wrapped outside the conductor (1); the conductor (1) is composed of a plurality of strands of metal layer plated soft copper conductors or metal layer non-plated soft copper conductors; the multi-strand metal layer plated soft copper conductor or the metal layer non-plated soft copper conductor is stranded into a bundle shape.

2. A high performance fire-resistant cable according to claim 1, characterized in that said conductor (1), inner fire-resistant layer (2) and insulating layer (3) are concentrically arranged.

3. A high performance fire-resistant cable according to claim 1, characterized in that said inner fire-resistant layer (2) is a ceramicized silicone rubber tape.

4. A high performance fire-resistant cable according to claim 1, characterized in that said insulating layer (3) is a thermoplastic or thermosetting insulation.

5. A high performance fire-resistant cable according to claim 1, characterized in that said sheath (6) is a thermoplastic or thermosetting sheath.

6. A high-performance fireproof cable according to claim 1, wherein the cable core (7) consists of five insulated wire cores (71), and the five insulated wire cores (71) are arranged in a ring shape.

7. A high performance fireproof cable according to claim 6, wherein the plurality of insulated wire cores (71) are arranged in parallel inside the sheath (6).

8. A high performance fire-resistant cable according to claim 1, wherein said insulating layer (3) is extruded on the surface of the inner fire-resistant layer (2) to form an insulating core outer covering.