CN210516296U

CN210516296U - Fire-resistant and flame-retardant ceramicized control cable

Info

Publication number: CN210516296U
Application number: CN201921287854.7U
Authority: CN
Inventors: 张忠良; 田守纪; 李金铮
Original assignee: Zhejiang Wanma Co Ltd
Current assignee: Zhejiang Wanma Co Ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-05-12
Anticipated expiration: 2029-08-09

Abstract

The utility model relates to a fire-resistant fire-retardant pottery control cable has solved the not enough of prior art, and technical scheme is: including a plurality of cable cores, all cable cores all wrap and establish in low smoke and zero halogen in-band, the outside package in low smoke and zero halogen area is equipped with the metallic shield layer, the outside package of metallic shield layer is equipped with the fire-retardant polyolefin sheath of low pressure zero halogen, and the outside package of the fire-retardant polyolefin sheath of low pressure zero halogen is equipped with ceramic fire-resistant polyolefin sheath, the cable core includes the conductor, and the conductor overlaps outward and wraps double-deck environmental protection pottery silicon rubber mica tape, and the outside package in double-deck environmental protection pottery silicon rubber mica tape is equipped with ceramic fire-resistant silicon rubber insulating layer, the space intussuseption in low smoke and zero halogen area is equipped with.

Description

Fire-resistant flame-retardant ceramic control cable

Technical Field

The utility model relates to a cable, in particular to fire-resistant fire-retardant pottery control cable.

Background

The cable structure commonly used at present comprises a conductor, an insulating layer, a filling layer, an isolation layer, a metal shielding layer, an inner protection layer and an outer sheath, wherein the outer sheath is a low-smoke halogen-free flame-retardant polyolefin outer sheath. Double-layer mica tapes are lapped outside the conductors in an overlapping way, and are easy to crack due to strong combustion; the insulating layer is made of crosslinked polyethylene, and runs for a long time after being burnt intensively, so that breakdown is easily caused finally; when the cabled wire core is used for stranding and filling, the filler pp rope has no environment-friendly flame-retardant effect in the process; the outer sheath uses low-smoke halogen-free flame-retardant polyolefin which runs for a long time after being strongly combusted and cannot play a role in fire resistance for a long time. Chinese patent publication No.: 109643592a, published 2019-04-16, discloses a cable comprising a plurality of inner insulating cores, wherein the inner insulating cores are covered with an insulator, and the insulator has a higher tensile elastic modulus and a lower friction coefficient than a vinyl chloride resin for electric wires.

However, the technical scheme still exists: double-layer mica tapes are lapped outside the conductors in an overlapping way, and are easy to crack due to strong combustion; the insulating layer is made of crosslinked polyethylene, and runs for a long time after being burnt intensively, so that breakdown is easily caused finally; when the cabled wire core is used for stranding and filling, the filler pp rope has no environment-friendly flame-retardant effect in the process; the outer sheath uses low-smoke halogen-free flame-retardant polyolefin which can not play a role of fire resistance for a long time after being burnt for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that the double-layer mica tape is lapped and wrapped outside the conductor in the prior art and is easy to break due to strong combustion; the insulating layer is made of crosslinked polyethylene, and runs for a long time after being burnt intensively, so that breakdown is easily caused finally; when the cabled wire core is used for stranding and filling, the filler pp rope has no environment-friendly flame-retardant effect in the process; the outer sheath uses low-smoke halogen-free flame-retardant polyolefin which runs for a long time after being strongly combusted, and cannot play a role of fire resistance for a long time, and the fire-resistant flame-retardant ceramic control cable is provided.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a fire-resistant fire-retardant pottery control cable, includes a plurality of cable cores, and all cable cores are all wrapped and are established in low smoke and zero halogen area, the outside package in low smoke and zero halogen area is equipped with the metallic shield layer, the outside package of metallic shield layer is equipped with the fire-retardant polyolefin sheath of low pressure zero halogen, and the outside package of the fire-retardant polyolefin sheath of low pressure zero halogen is equipped with pottery fire-resistant polyolefin sheath, the cable core includes the conductor, and the conductor overlaps outward and is equipped with pottery fire-resistant silicon rubber mica tape around the package of double-deck environmental protection pottery silicon rubber mica tape, and the outside package of double-deck environmental protection pottery silicon rubber mica tape is equipped with pottery fire-resistant. The double-layer environment-friendly ceramic silicone rubber mica tape is lapped outside the conductor in an overlapping manner, so that the fireproof effect is improved; the insulating layer is made of ceramic fire-resistant silicon rubber, so that the cable has a stable fire-resistant effect; the cable cores are filled with the environment-friendly high-flame-retardant ropes in the stranding process to be round and compact, so that the cable has a flame-retardant structure and does not burn when fire and other conditions happen in the field; the isolation layer of the cable is formed by winding a double-layer non-hygroscopic low-smoke halogen-free tape, so that the flame retardant effect is provided; the metal shielding layer is woven by round copper wires for electricians, and aims to prevent external electromagnetic signals from interfering with the current of the cable; the inner protective layer uses the low-smoke halogen-free flame-retardant polyolefin sheath material, so that the flame-retardant effect is improved, the cable can continuously and stably run for a certain time under the condition of a super-large fire, and personnel can conveniently evacuate; the outer sheath uses ceramic fire-resistant polyolefin sheath materials, so that the fire-resistant effect in a fire disaster is improved, the economic loss is reduced to the maximum extent in the fire disaster environment, and the safety of the area is greatly improved.

Preferably, the metal shielding layer is a metal shielding layer woven by round copper wires for electrical engineering.

Preferably, the thickness of the ceramic fire-resistant polyolefin sheath is larger than that of the low-pressure halogen-free flame-retardant polyolefin sheath.

Preferably, the thickness of the ceramic fire-resistant silicon rubber insulating layer is larger than that of the low-pressure halogen-free flame-retardant polyolefin sheath.

Preferably, the thickness of the polyethylene sheath is less than or equal to that of the low-pressure halogen-free flame-retardant polyolefin sheath.

The utility model discloses a substantive effect is: the application of the invention effectively solves the problem of fire resistance and flame retardance of the cable, improves the safety of the cable in accidental situations such as fire and the like, and prolongs the service life of the cable.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. the cable comprises a conductor, 2 parts of an environment-friendly ceramic silicon rubber mica tape, 3 parts of a ceramic fire-resistant silicon rubber insulating layer, 4 parts of an environment-friendly high-flame-retardant rope, 5 parts of a low-smoke halogen-free tape, 6 parts of a metal shielding layer, 7 parts of a low-voltage halogen-free flame-retardant polyolefin sheath and 8 parts of a ceramic fire-resistant polyolefin sheath.

Detailed Description

The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings.

The utility model provides a fire-resistant fire-retardant ceramic-like control cable (see attached figure 1), includes a plurality of cable cores, and all cable cores are all wrapped and are established in low smoke and zero halogen area 5, the outside package in low smoke and zero halogen area is equipped with metallic shield 6, the outside package of metallic shield is equipped with low pressure halogen-free fire-retardant polyolefin sheath 7, and the outside package of low pressure halogen-free fire-retardant polyolefin sheath is equipped with ceramic-like fire-retardant polyolefin sheath 8, the cable core includes conductor 1, and the conductor overlaps outward and is equipped with ceramic-like silicon rubber mica tape 2 around package bilayer environmental protection, and the outside package of ceramic-like silicon rubber mica tape of bilayer environmental protection is equipped with ceramic-like fire-retardant silicon rubber insulating layer 3, the high fire-retardant. The metal shielding layer is formed by weaving round copper wires for electricians. The thickness of the ceramic fire-resistant polyolefin sheath is larger than that of the low-pressure halogen-free fire-resistant polyolefin sheath. The thickness of the ceramic fire-resistant silicon rubber insulating layer is larger than that of the low-pressure halogen-free flame-retardant polyolefin sheath. The thickness of the polyethylene sheath is less than or equal to that of the low-pressure halogen-free flame-retardant polyolefin sheath.

The embodiment effectively solves the fire-resistant and flame-retardant problems of the cable, improves the safety of the cable in fire and other accidents, and prolongs the service life of the cable.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.

Claims

1. A fire-resistant flame-retardant ceramic control cable is characterized in that: including a plurality of cable cores, all cable cores all wrap and establish in low smoke and zero halogen in-band, the outside package in low smoke and zero halogen area is equipped with the metallic shield layer, the outside package of metallic shield layer is equipped with the fire-retardant polyolefin sheath of low pressure zero halogen, and the outside package of the fire-retardant polyolefin sheath of low pressure zero halogen is equipped with ceramic fire-resistant polyolefin sheath, the cable core includes the conductor, and the conductor overlaps outward and wraps double-deck environmental protection pottery silicon rubber mica tape, and the outside package in double-deck environmental protection pottery silicon rubber mica tape is equipped with ceramic fire-resistant silicon rubber insulating layer, the space intussuseption in low smoke and zero halogen area is equipped with.

2. The fire-resistant flame-retardant ceramic-coated control cable according to claim 1, wherein: the metal shielding layer is formed by weaving round copper wires for electricians.

3. The fire-resistant flame-retardant ceramic-coated control cable according to claim 1, wherein: the thickness of the ceramic fire-resistant polyolefin sheath is larger than that of the low-pressure halogen-free fire-resistant polyolefin sheath.

4. A fire-resistant flame-retardant ceramic-coated control cable according to claim 1, 2 or 3, wherein: the thickness of the ceramic fire-resistant silicon rubber insulating layer is larger than that of the low-pressure halogen-free flame-retardant polyolefin sheath.

5. A fire-resistant flame-retardant ceramic-coated control cable according to claim 1, 2 or 3, wherein: the thickness of the polyethylene sheath is less than or equal to that of the low-pressure halogen-free flame-retardant polyolefin sheath.