CN219143844U

CN219143844U - Crosslinked polyethylene insulation fireproof cable

Info

Publication number: CN219143844U
Application number: CN202223264666.7U
Authority: CN
Inventors: 李银祥
Original assignee: Guoyou Cable Group Co Ltd
Current assignee: Guoyou Cable Group Co Ltd
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-06-06
Anticipated expiration: 2032-12-06

Abstract

The utility model discloses a crosslinked polyethylene insulated fireproof cable, which comprises a cable core, a protective core arranged outside the cable core and an outer sheath extruded outside the protective core, wherein the cable core consists of four insulating wire cores and filling materials coated outside the insulating wire cores, each insulating wire core consists of a conductor, a wrapping tape layer A wrapped outside the conductor and an insulating layer extruded outside the wrapping tape layer A, the conductor is formed by twisting a plurality of strands of soft conductors, and the protective core consists of the cable core, a wrapping tape layer B wrapped outside the filling materials, an armor layer and a fireproof layer which are coaxially extruded outside the wrapping tape layer B in sequence. Aiming at the defects of the cable arrangement structure in the prior art, most cables are only fireproof at the outermost layer, and the cable core inside the cable is directly damaged when the high temperature and flame break through the outer layer of the cable. The utility model has the advantages of extrusion resistance, protection, flame retardance, fire resistance, tearing resistance and the like.

Description

Crosslinked polyethylene insulation fireproof cable

Technical Field

The utility model relates to the technical field of cables, in particular to a crosslinked polyethylene insulated fireproof cable.

Background

With the continuous expansion of the industries such as the power industry, the data communication industry, the urban rail transit industry, the automobile industry, shipbuilding and the like, the demand for wires and cables is rapidly increased, meanwhile, with the rapid and steady increase of national economy, the rapid development of urban construction is realized, buildings with various functions are built in batches, people pay more and more importance to data security, cables are used as expressways for information transmission, and the anti-impact capability of the cables on sudden disasters in the transmission process is naturally the hot field of cable industry research, and the fire prevention as the first of comprehensive wiring 'three-proofing' is also important.

The cable of prior art mainly comprises heart yearn, insulating layer and shielding layer and sheath, and the sheath parcel is in the outermost side of cable, and the effect of sheath is to avoiding external environment to the influence of carried signal. Therefore, the sheath layer plays an important role in the cable, and the cable in the prior art has the defect problem in the aspect of related structure, and most cables are only fireproof for the outermost layer, so that the cable core in the cable can be directly damaged when the high temperature and flame break through the outer layer of the cable.

Aiming at the technical problems, the utility model discloses a crosslinked polyethylene insulated fireproof cable, which has the advantages of extrusion resistance protection, flame retardance, fire resistance, tear resistance and the like.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a crosslinked polyethylene insulated fireproof cable, which solves the problems that the cable arrangement structure in the prior art has defects, most cables are only fireproof for the outermost layer, and the cable cores in the cables are directly damaged when the cable layers are broken through by high temperature and flame. The utility model has the advantages of extrusion resistance, protection, flame retardance, fire resistance, tearing resistance and the like.

The utility model is realized by the following technical scheme: the utility model discloses a crosslinked polyethylene insulated fireproof cable, which comprises a cable core, a protective core arranged outside the cable core and an outer sheath extruded outside the protective core, wherein the cable core consists of four insulating wire cores and filling materials coated outside the insulating wire cores, each insulating wire core consists of a conductor, a wrapping tape layer A wrapped outside the conductor and an insulating layer extruded outside the wrapping tape layer A, the conductor is formed by twisting a plurality of strands of soft conductors, and the protective core consists of the cable core, a wrapping tape layer B wrapped outside the filling materials, an armor layer and a fireproof layer which are coaxially extruded outside the wrapping tape layer B in sequence.

Furthermore, in order to enhance the weather resistance of the cable, the outer sheath can not generate a large amount of dense smoke and toxic gas when a fire disaster occurs, and has high oxygen index and difficult combustion, and the outer sheath is made of halogen-free low-smoke polyolefin materials.

Furthermore, the insulating layer is made of crosslinked polyethylene insulating material in order to have the advantages of light weight, good heat resistance, strong loading capacity, no melting, chemical corrosion resistance, high mechanical strength and the like.

Further, in order to achieve the effects of heat insulation and flame retardance, the filling material is a flame-retardant filling rope.

Furthermore, in order to have fire-resistant insulating property, the wrapping band layer A is a fire-resistant mica tape, and the wrapping band layer B is a halogen-free high-flame-retardant tape.

Further, in order to provide the cable with tear resistance, the armor layer is a metal sheath.

Furthermore, in order to enhance the integral fireproof and high-temperature-resistant performance of the cable, the fireproof layer is made of ceramic polyolefin materials.

The utility model has the following advantages:

the cable core is formed by four insulating wire cores and a filling material coated outside the insulating wire cores, the filling material is a flame-retardant filling rope, the insulating wire cores play a role in insulating and flame-retardant while preventing compression, the insulating wire cores are formed by conductors, a wrapping tape layer A wrapped outside the conductors and an insulating layer extruded outside the wrapping tape layer A, the conductors are formed by twisting a plurality of soft conductors, the cable core is formed by the cable core, a wrapping tape layer B wrapped outside the filling material, and an armor layer and a flame-retardant layer coaxially extruded outside the wrapping tape layer B in sequence, the wrapping tape layer B is a halogen-free high-flame-retardant tape and has flame-retardant insulating performance, the armor layer is a metal sheath, the flame-retardant layer is made of ceramic polyolefin materials, the fireproof and high-temperature-resistant performance of the whole cable is enhanced, the outermost outer sheath is made of halogen-free low-smoke polyolefin materials, the weather resistance of the cable is enhanced, a large amount of smoke and toxic gases are not generated when a fire disaster occurs, and the oxygen index is high and the combustion is difficult.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model;

FIG. 2 is a schematic cross-sectional view of a cable core according to the present utility model;

FIG. 3 is a schematic view of the cross-sectional structure of the core protector of the present utility model.

In the figure: 1. a cable core; 2. protecting the core; 3. an outer sheath; 4. an insulated wire core; 5. a filler material; 6. a wrapping layer A; 7. an insulating layer; 8. a belting layer B; 9. an armor layer; 10. a refractory layer; 11. a conductor.

Detailed Description

The following detailed description of embodiments of the present utility model, which are given by taking the technical solution of the present utility model as a premise, gives detailed embodiments and specific operation procedures, but the scope of the present utility model is not limited to the following embodiments, and in the description of the present utility model, words indicating orientation or positional relationship like "front", "rear", "left", "right", etc. are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

The utility model provides a technical scheme that: the utility model provides a crosslinked polyethylene insulation fireproof cable, as shown in fig. 1 through 3, including cable core 1, locate cable core 1 outside protect core 2 and crowded outer sheath 3 of wrapping outside protecting core 2, cable core 1 comprises four insulation core 4 and cladding outside insulating core 4 packing material 5, every insulation core 4 comprises conductor 11, wrapping tape layer A6 and crowded insulating layer 7 of wrapping outside tape layer A6 of wrapping around conductor 11, conductor 11 adopts stranded soft conductor to twist and forms, protect core 2 by cable core 1 and packing material 5 wrapping tape layer B8 and wrapping tape layer B8 outside coaxial extrusion's armor 9, flame retardant coating 10 in proper order.

As shown in fig. 1 and 3, the outer sheath 3 is made of halogen-free low-smoke polyolefin material, so that the weather resistance of the cable is enhanced, a large amount of dense smoke and toxic gas cannot be generated by the outer sheath 3 in case of fire, and the oxygen index is high and the combustion is difficult.

As shown in fig. 1 and 2, the insulating layer 7 is made of a crosslinked polyethylene insulating material, and has the advantages of light weight, good heat resistance, strong loading capacity, no melting, chemical corrosion resistance, high mechanical strength and the like.

As shown in fig. 1 and 2, the filling material 5 is a flame-retardant filling rope, and has the effects of heat insulation and flame retardance.

As shown in fig. 1 and 2, the wrapping band layer A6 is a fire-resistant mica tape, and the wrapping band layer B8 is a halogen-free high-flame-retardant tape with fire-resistant insulation performance.

As shown in fig. 1 and 3, the armor layer 9 is a metal sheath, which provides the cable with tear resistance.

As shown in fig. 1 and 3, the fire-resistant layer 10 is made of ceramic polyolefin material, so that the fire resistance and high temperature resistance of the whole cable are enhanced.

The principle of the utility model is as follows: the cable core 1 is provided with a protection core 2 and an outer sheath 3 which are used for protecting the inside, the cable core 1 is composed of four insulation wire cores 4 and a filling material 5 which is coated outside the insulation wire cores 4, the filling material 5 is a flame-retardant filling rope, the protection wire cores prevent being pressed and play a role in heat insulation and flame retardance, the insulation wire cores 4 are composed of conductors 11, a wrapping band layer A6 wrapped outside the conductors 11 and an insulation layer 7 extruded outside the wrapping band layer A6, the conductors 11 are formed by twisting a plurality of strands of soft conductors, the protection core 2 is composed of a wrapping band layer B8 wrapped outside the cable core 1 and the filling material 5 and a fire-resistant layer 10 which are sequentially coaxially extruded outside the wrapping band layer B8, the wrapping band layer B8 is a halogen-free high flame-retardant tape, the cable has a fire-resistant insulation performance, the wrapping layer 9 is a metal sheath, the cable is made of a ceramic polyolefin material, the whole fireproof high-temperature resistance performance of the cable is enhanced, the outer sheath 3 of the outermost layer is made of a halogen-free low-smoke polyolefin material, the weather resistance of the cable is enhanced, and the outer sheath 3 does not generate a large amount of smoke and has a high fire resistance index when a fire disaster occurs.

Claims

1. The utility model provides a crosslinked polyethylene insulation fireproof cable, includes the cable core, locates the outside protective core of cable core and crowded package at the outer oversheath of protective core and constitute, its characterized in that, the cable core comprises four insulation core and the packing material of cladding outside insulation core, and every insulation core comprises conductor, wrapping band layer A and crowded package outside band layer A around wrapping the conductor, and the conductor adopts stranded flexible conductor transposition to form, the protective core comprises cable core and packing material outside wrapping band layer B and band layer B outside coaxial crowded package's armor, flame retardant coating in proper order.

2. A crosslinked polyethylene insulated fire-resistant cable according to claim 1 wherein said outer jacket is made of a halogen-free low smoke polyolefin material.

3. A crosslinked polyethylene insulated fireproof cable according to claim 1, wherein the insulating layer is made of crosslinked polyethylene insulating material.

4. A crosslinked polyethylene insulated fireproof cable according to claim 1, wherein the filler material is a flame retardant filler rope.

5. A crosslinked polyethylene insulated fireproof cable according to claim 1, wherein the tape layer a is a fire resistant mica tape.

6. The crosslinked polyethylene insulated fireproof cable of claim 1, wherein the tape layer B is a halogen-free high flame retardant tape.

7. A crosslinked polyethylene insulated fireproof cable according to claim 1, wherein the armor layer is a metal sheath.

8. A crosslinked polyethylene insulated fire protection cable according to claim 1 wherein the fire resistant layer is made of a ceramic polyolefin material.