CN211208065U

CN211208065U - Ceramic polyolefin fire-resistant flame-retardant cable

Info

Publication number: CN211208065U
Application number: CN201922358834.0U
Authority: CN
Inventors: 沈必亮; 王晓春; 姚文亮; 何一军; 丁学良
Original assignee: Anhui Chunhui Instrument Cable Group Co Ltd
Current assignee: Anhui Chunhui Instrument Cable Group Co Ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-08-07
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a belong to the technical field of cables, in particular to a ceramic polyolefin fire-resistant flame-retardant cable, which comprises a cable core, wherein a halogen-free polyolefin sheath is arranged in the cable, when the cable is on fire, a ceramic material can be formed, flame is isolated, the cable is prevented from being damaged by the flame, and the cable is made of halogen-free polyolefin, smoke and harmful gas can not be generated when the cable is burnt, the environmental protection property is higher, through arranging a fireproof layer in the cable, inorganic mineral in the fireproof layer is magnesium hydroxide, the decomposition temperature is lower, and water vapor and metal oxide can be generated after decomposition, the cable has excellent flame-retardant property, the fireproof capacity of the cable can be effectively improved, when the cable is on fire, flame can be effectively blocked, the cable core in the cable is prevented from being damaged by the flame, through arranging a metal braided layer, the oxidation resistance and the strength of the cable can be improved, the service life of the cable is prolonged.

Description

Ceramic polyolefin fire-resistant flame-retardant cable

Technical Field

The utility model relates to the technical field of cables, specifically a fire-resistant flame retarded cable of pottery polyolefin.

Background

Wire and cable are wire products for transmitting electric energy, electric signals and realizing electromagnetic energy conversion. A cable generally comprises a core for transmitting power or electrical signals and a sheath for protecting and insulating. Cables having only one core and having a small diameter are generally called wires. There are also some electric wires without an insulating sheath, which are called bare wires. The cable core in the cable is made of metal materials with good electric conductivity, copper or aluminum is usually used, but the existing cable is usually flame-retardant and fireproof to the cable by winding a phlogopite fire-resistant tape or a synthetic mica fire-resistant tape on the outer layer of a conductor, the fireproof performance is poor, and a large amount of harmful gas can be generated once the cable is burnt.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire-resistant flame retarded cable of pottery polyolefin to solve present cable that proposes in the above-mentioned background art and adopt to carry out fire-retardant, fire prevention to the cable at the outer golden mica fire-resistant area of winding of conductor or synthetic mica fire-resistant bringing, the relatively poor and once burn can produce a large amount of harmful gas's problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a pottery polyolefin fire-resistant flame retarded cable, includes cable core, flame retardant coating, woven metal layer, no halogen polyolefin sheath, insulating sheath, conductor and tensile heart yearn, the circumference outer wall of cable core sets up the flame retardant coating, the circumference outer wall of flame retardant coating sets up woven metal layer, woven metal layer's circumference outer wall sets up no halogen polyolefin sheath, no halogen polyolefin sheath's circumference outer wall sets up insulating sheath, the inner chamber of cable core sets up the conductor, the circumference outer wall of conductor is provided with the insulating layer, set up in the middle of the inner chamber of cable core the tensile heart yearn.

Preferably, the circumferential inner wall of the cable core is provided with a heat insulation layer.

Preferably, the fireproof layer is made of inorganic mineral composite nano materials.

Preferably, the circumference outer wall on insulating sheath is provided with the polyethylene layer, the circumference outer wall on polyethylene layer is provided with the nylon layer, the circumference outer wall on nylon layer is provided with the polyvinyl chloride layer.

Preferably, the metal woven layer is formed by interweaving tinned copper and stainless steel, and the metal woven layer is in a grid shape.

Compared with the prior art, the beneficial effects of the utility model are that: by arranging the halogen-free polyolefin sheath in the cable, a ceramic material can be formed when the cable catches fire, the cable is isolated from flame to prevent the flame from damaging the cable, is made of halogen-free polyolefin, does not generate smoke and harmful gas when suffering from fire burning, has higher environmental protection performance, and is provided with the fireproof layer, and the inorganic mineral in the fireproof layer is magnesium hydroxide, the decomposition temperature is lower, water vapor and metal oxide can be generated after decomposition, the cable has excellent flame retardant property, the fireproof capability of the cable can be effectively improved, when the cable is on fire, the flame can be effectively blocked, the flame is prevented from damaging the cable core in the cable, through setting up the metal braid, the metal braid is woven by galvanized copper and stainless steel are crisscross and is formed, can improve the oxidation resistance and the intensity of this cable, has prolonged the life of this cable.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the metal braid layer of the present invention;

fig. 3 is a schematic view of the structure of the insulating sheath of the present invention.

In the figure: cable core 100, flame retardant coating 200, metal braid 300, halogen-free polyolefin sheath 400, insulating sheath 500, polyethylene layer 510, nylon layer 520, polyvinyl chloride layer 530, conductor 600, tensile heart yearn 700.

Detailed Description

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

The utility model provides a fire-resistant flame retarded cable of pottery polyolefin for improve the fire behavior of cable, please refer to fig. 1, including cable core 100, flame retardant coating 200, metallic braid 300, no halogen polyolefin sheath 400, insulating sheath 500, conductor 600 and tensile heart yearn 700.

Referring to fig. 1 again, the cable core 100 is used for covering the conductor 600 and the tensile core wire 700, and the cable core 100 is made of rubber;

referring to fig. 1 again, the fireproof layer 200 is wrapped on the circumferential outer wall of the cable core 100 by means of extrusion, the fireproof layer 200 is used for performing fireproof and flame-retardant functions on the cable core 100, the fireproof layer 200 is an inorganic mineral composite nano fireproof layer, and the inorganic mineral in the fireproof layer 200 is magnesium hydroxide;

referring to fig. 1 and 2, the metal braid 300 is wrapped on the outer circumferential wall of the fireproof layer 200 by extrusion, the metal braid 300 is used for improving the oxidation resistance and strength of the cable, and the metal braid 300 is formed by interlacing galvanized copper and stainless steel;

referring to fig. 1 again, the halogen-free polyolefin sheath 400 is wrapped around the outer circumferential wall of the metal braid 300 by extrusion, the halogen-free polyolefin sheath 400 is used for improving the fireproof performance and environmental performance of the cable, and the halogen-free polyolefin sheath 400 is made of polyolefin;

referring to fig. 1 and 3, the insulating sheath 500 includes a polyethylene layer 510, a nylon layer 520 and a polyvinyl chloride layer 530, the insulating sheath 500 is wrapped on the outer circumferential wall of the halogen-free polyolefin sheath 400 in an extrusion wrapping manner, the polyethylene layer 510, the nylon layer 520 and the polyvinyl chloride layer 530 are wrapped on the outer circumferential wall of the insulating sheath 500 in an extrusion wrapping manner, the polyethylene layer 510, the nylon layer 520 and the polyvinyl chloride layer 530 on the outer circumferential wall of the insulating sheath 500 are used for playing a moisture-proof role for the cable, the insulating sheath 500 is specifically a rubber insulating sheath, the polyethylene layer 510 is made of a polyethylene material, the nylon layer 520 is woven from nylon wires, and the polyvinyl chloride layer 530 is made of a polyvinyl chloride material;

referring to fig. 1 again, the conductors 600 are located in the middle of the cable core 100, the number of the conductors 100 is four, the conductors 100 are twisted together, the conductors 600 are used for providing a transmission medium for power or data, and the conductors 600 are made of copper;

referring to fig. 1 again, the tensile core wire 700 is connected with the four conductors 600 by twisting, the tensile core wire 700 is used for improving the tensile resistance of the cable, and the tensile core wire 700 is formed by twisting jute ropes and galvanized copper wires.

The working principle is as follows: the cable core 100 is coated with the conductor 600 and the tensile core wire 700, the tensile core wire 700 improves the tensile property of the cable, the outer wall of the cable core 100 is coated with the fireproof layer 200, the fireproof layer 200 is made of inorganic mineral composite nano material, the inorganic mineral is magnesium hydroxide, the decomposition temperature is low, water vapor and metal oxide can be generated after decomposition, the fireproof performance is excellent, the fireproof performance of the cable can be effectively improved, when the cable is ignited, flame can be effectively blocked, the cable core inside the cable is prevented from being damaged by the flame, the outer wall of the fireproof layer 200 is coated with the metal braid 300, the metal braid 300 is formed by interlacing and weaving zinc-plated copper and stainless steel, the antioxidant performance and the strength of the cable can be improved, the service life of the cable is prolonged, the outer wall of the metal braid 300 is coated with the halogen-free polyolefin sheath 400, and the halogen-free polyolefin sheath 400 is made of halogen-free polyolefin, when the cable catches fire, a ceramic material can be formed to isolate flame, so that the flame is prevented from damaging the cable, the cable is made of halogen-free polyolefin, smoke and harmful gas cannot be generated when the cable is burnt, the environment friendliness is high, the outer wall of the halogen-free polyolefin sheath 400 is coated with the insulating sheath 500, the outer wall of the insulating sheath 500 is coated with the polyethylene layer 510, the nylon layer 520 and the polyvinyl chloride layer 530, and the moisture resistance of the cable is improved;

in order to improve the heat insulation performance of the cable, the heat insulation layer is arranged on the circumferential inner wall of the cable core, so that the cable is prevented from being frozen in low-temperature weather;

referring to fig. 3 again, in order to improve the moisture-proof capability of the cable, a polyethylene layer 510, a nylon layer 520 and a polyvinyl chloride layer 530 are disposed on the outer circumferential wall of the insulating sheath, which can effectively perform the moisture-proof function.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the description of such combinations is not exhaustive in the present specification only for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A fire-resistant flame retardant cable of pottery polyolefin which characterized in that: including cable core (100), flame retardant coating (200), woven metal layer (300), no halogen polyolefin sheath (400), insulating sheath (500), conductor (600) and tensile heart yearn (700), the circumference outer wall of cable core (100) sets up flame retardant coating (200), the circumference outer wall of flame retardant coating (200) sets up woven metal layer (300), the circumference outer wall of woven metal layer (300) sets up no halogen polyolefin sheath (400), the circumference outer wall of no halogen polyolefin sheath (400) sets up insulating sheath (500), the inner chamber of cable core (100) sets up conductor (600), the circumference outer wall of conductor (600) is provided with the insulating layer, set up in the middle of the inner chamber of cable core (100) tensile heart yearn (700).

2. The fire resistant, flame retardant cable of claim 1, wherein: and the circumferential inner wall of the cable core (100) is provided with a heat-insulating layer.

3. The fire resistant, flame retardant cable of claim 1, wherein: the fireproof layer (200) is made of inorganic mineral composite nano materials.

4. The fire resistant, flame retardant cable of claim 1, wherein: the circumference outer wall of insulating sheath (500) is provided with polyethylene layer (510), the circumference outer wall of polyethylene layer (510) is provided with nylon layer (520), the circumference outer wall of nylon layer (520) is provided with polyvinyl chloride layer (530).

5. The fire resistant, flame retardant cable of claim 1, wherein: the metal braided layer (300) is formed by interweaving tinned copper and stainless steel, and the metal braided layer (300) is in a grid shape.