CN210271903U

CN210271903U - High-performance low-smoke halogen-free flame-retardant low-noise cable

Info

Publication number: CN210271903U
Application number: CN201920945366.4U
Authority: CN
Inventors: 李海全; 温鹏
Original assignee: Suheng Cable Nantong Co ltd
Current assignee: Suheng Cable Nantong Co ltd
Priority date: 2019-06-22
Filing date: 2019-06-22
Publication date: 2020-04-07
Anticipated expiration: 2029-06-22

Abstract

The utility model discloses a fire-retardant low noise cable of low smoke and zero halogen of high performance, including the conductor, the conductor is crowded package outward has the internal shield layer, and the internal shield layer is the compound shielding bed of material of high semiconduction graphite alkene, and heat dispersion is good, and the external crowded package insulating layer of internal shield layer, the external shield layer of crowded package outward of insulating layer, the external shield layer be the compound shielding bed of material of high semiconduction graphite alkene, is equipped with the metallic shield layer outward of external shield layer, and the outer compound area of longitudinal wrapping aluminium-plastic of metallic shield layer, the compound outband of aluminium-plastic is around package one deck flame retardant coating, the crowded package overs. This low noise cable performance is excellent, and it is strong to have the interference killing feature through crowded package, and the heat dissipation is good, and the compound shielding material of graphite alkene that semi-conducting performance is high is aided with excellent structural design, and it is convenient to make, and production process easily realizes, makes signal cable not only have the low noise performance, has good external electromagnetic interference resistance moreover to have environmental protection flame retardant property, the cable safety, the environmental protection, the use occasion is extensive.

Description

High-performance low-smoke halogen-free flame-retardant low-noise cable

Technical Field

The utility model relates to a signal transmission cable, concretely relates to fire-retardant low noise cable of low smoke and zero halogen of high performance.

Background

The mechanism of cable noise generation can be roughly classified into the following cases: thermal effects of the cable material; piezoelectric effect of certain cable dielectric materials; the external force causes the relative displacement between the cable metal body and the insulating medium to cause friction and charge accumulation and release; and after the cable has been subjected to a certain dose of radiation, etc.

The design of a general low-noise cable is mainly divided into four modes, namely 1, coating semi-conductivity; 2. wrapping a semi-conductive belt; 3. and coating a graphite layer. However, the structural designs have defects affecting the performance of products in the manufacturing process, such as coating of semi-conductive glue and coating of graphite, and the probability of noise generation of the signal cable is greatly increased due to uneven coating and infirm coating in the manufacturing process; the semi-conductive tape is wrapped, and the slip between the conductor and the core and the semi-conductive tape caused by the bending of the cable can also cause the noise of the signal cable. Therefore, it is necessary to provide a new technology to solve the above technical problems.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a fire-retardant low noise cable of low smoke and zero halogen of high performance has good external electromagnetic interference resistance ability to have environmental protection flame retardant property.

The utility model provides a following technical scheme:

the utility model provides a fire-retardant low noise cable of high performance low smoke and zero halogen, includes the conductor, the conductor is crowded package outward has the internal shield layer, the internal shield layer is the compound shielding bed of material of high semiconduction graphite alkene, the crowded package insulating layer outward of internal shield layer, the crowded package external shield layer outward of insulating layer, the external shield layer is the compound shielding bed of material of high semiconduction graphite alkene, be equipped with metallic shield layer outward of external shield layer, metallic shield layer is outer indulged and is wrapped the compound area of aluminium-plastic, the compound outband of aluminium-plastic is around package one deck flame retardant coating, the crowded package oversheath outward of flame retardant coating.

Furthermore, the conductor is a soft copper wire, the conductor is of a stranded multi-strand structure, and the diameter of the conductor monofilament is 0.08-0.30 mm.

Furthermore, the thickness of the inner shielding layer and the outer shielding layer is 0.1 mm-0.5 mm.

Further, the insulating layer is one of medium-low density polyethylene, irradiation cross-linked polyethylene and elastomer insulating material.

Furthermore, the metal shielding layer is an annealed oxygen-free copper wire, and a layer of single-side self-adhesive aluminum-plastic composite tape is longitudinally wrapped outside the copper wire winding shielding layer, wherein the thickness of the single-side self-adhesive aluminum-plastic composite tape is 0.01 mm-0.2 mm.

Furthermore, the fireproof layer is wrapped by a layer of ceramic silicon rubber belt in an overlapping mode, the overlapping rate of the ceramic silicon rubber belt in the overlapping mode is not less than 20%, and the thickness of the belt material ranges from 0.14mm to 0.2 mm.

Furthermore, the outer sheath is a low-smoke halogen-free flame-retardant polyolefin sheath.

Compared with the prior art, the beneficial effects of the utility model are that: this low noise cable performance is excellent, and it is strong to have the interference killing feature through crowded package, and the heat dissipation is good, and the compound shielding material of graphite alkene that semi-conducting performance is high is aided with excellent structural design, and it is convenient to make, and production process easily realizes, makes signal cable not only have the low noise performance, has good external electromagnetic interference resistance moreover to have environmental protection flame retardant property, the cable safety, the environmental protection, the use occasion is extensive.

Drawings

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

In the figure: 1. the cable comprises a conductor, 2, an inner shielding layer, 3, an insulating layer, 4, an outer shielding layer, 5, a metal shielding layer, 6, an aluminum-plastic composite tape, 7, a fireproof layer, 8 and an outer sheath.

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.

Referring to fig. 1, the utility model discloses a fire-retardant low noise cable of high performance low smoke and zero halogen, including conductor 1, conductor 1 is crowded package outward has internal shield layer 2, internal shield layer 2 is the compound shielding bed of material of high semiconduction graphite alkene, and heat dispersion is good, internal shield layer 2 is crowded package insulating layer 3 outward, insulating layer 3 is crowded package outer shielding layer 4 outward, outer shielding layer 4 is the compound shielding bed of material of high semiconduction graphite alkene, outer shielding layer 4 is equipped with metal shielding layer 5 outward, the compound area of aluminium-plastic 6 of the outer longitudinal wrapping of metal shielding layer 5, compound area of aluminium-plastic 6 is outer around wrapping one deck flame retardant coating 7, the outer sheath 8 of the crowded package flame retardant coating 7 outward.

The conductor 1 is composed of oxygen-free annealed soft copper wires with the pure copper content of 99.999%, the conductor is of a stranded multi-strand structure, and the diameter of a conductor single wire is 0.08-0.30 mm.

The inner and outer shielding layers 2 and 4 are made of high-semiconductive shielding materials formed by mixing graphene and high-conductivity carbon black and then mixing the mixture with polyolefin, and the thickness of the inner and outer shielding layers is 0.1-0.5 mm.

The insulating layer 3 is one of medium-low density polyethylene, irradiation cross-linked polyethylene and elastomer insulating material.

The metal shielding layer 5 comprises a metal shielding layer and an aluminum-plastic composite belt. The metal shielding layer is formed by winding and shielding annealed oxygen-free copper wires, the distance between the single wires is not more than 1mm, and the diameter of the single wires is 0.08-0.15 mm; and longitudinally wrapping a layer of single-sided self-adhesive aluminum-plastic composite tape outside the copper wire winding shield, wherein the thickness of the single-sided self-adhesive aluminum-plastic composite tape is 0.01-0.2 mm, and forming a composite shield layer.

The fire-proof layer 7 adopts a layer of ceramic silicon rubber belt which is lapped and lapped, the overlapping and lapping rate of the ceramic silicon rubber belt is not less than 20%, and the thickness of the belt material is 0.14 mm-0.2 mm.

The outer sheath 8 is made of environment-friendly low-smoke halogen-free flame-retardant polyolefin sheath.

Compared with the prior art, the utility model, have the compound shielding material of graphite alkene of high semi-conductive performance outside at conductor outside and insulating layer through crowded package, the firm cladding of high semi-conductive material is outside at conductor and insulating layer, utilize the principle of bridging of graphite and carbon black, make the performance of compound shielding material more excellent, avoided the cable at crooked in-process, the signal noise that causes, the compound shielding material of graphite alkene has the heat dissipation well moreover, optimize the effect of cable performance greatly, also avoid the cable to lead to the production of noise because of the fuel factor. The cable passes through shielded optimal design, the copper wire winding that has adopted the shielding coefficient to hang down adds the outside structure of indulging a packet of compound area of one deck aluminium-plastic, make cable shielding coefficient be less than 0.1, can have the effectual interference that prevents external signal to this signal cable, and, indulge the package because of using the compound area of aluminium-plastic, also make the cable have the effect of keeping off the tide, the cable has fire behavior's ceramic silicon rubber area through wrapping the one deck in addition, the oversheath uses low smoke and zero halogen fire-retardant polyolefin sheath material, make the cable have environmental protection flame retardant property in addition.

This low noise cable performance is excellent, and it is strong to have the interference killing feature through crowded package, and the heat dissipation is good, and the compound shielding material of graphite alkene that semi-conducting performance is high is aided with excellent structural design, and it is convenient to make, and production process easily realizes, makes signal cable not only have the low noise performance, has good external electromagnetic interference resistance moreover to have environmental protection flame retardant property, the cable safety, the environmental protection, the use occasion is extensive.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high performance low smoke zero halogen flame retardant low noise cable is characterized in that: the novel shielding layer is characterized by comprising a conductor (1), wherein an inner shielding layer (2) is extruded outside the conductor (1), the inner shielding layer (2) is a high semiconductive graphene composite shielding material layer, an insulating layer (3) is extruded outside the inner shielding layer (2), an outer shielding layer (4) is extruded outside the insulating layer (3), the outer shielding layer (4) is a high semiconductive graphene composite shielding material layer, a metal shielding layer (5) is arranged outside the outer shielding layer (4), the metal shielding layer (5) is longitudinally wrapped with an aluminum-plastic composite belt (6), the aluminum-plastic composite belt (6) is wrapped with a fire-proof layer (7) in an outer winding mode, and an outer sheath (8) is extruded outside the fire-proof layer (7).

2. The high-performance low-smoke halogen-free flame-retardant low-noise cable according to claim 1, characterized in that: the conductor (1) is a soft copper wire, the conductor is of a stranded multi-strand structure, and the diameter of a conductor monofilament is 0.08-0.30 mm.

3. The high-performance low-smoke halogen-free flame-retardant low-noise cable according to claim 1, characterized in that: the thicknesses of the inner shielding layer (2) and the outer shielding layer (4) are 0.1-0.5 mm.

4. The high-performance low-smoke halogen-free flame-retardant low-noise cable according to claim 1, characterized in that: the insulating layer (3) is one of medium-low density polyethylene, irradiation cross-linked polyethylene and elastomer insulating material.

5. The high-performance low-smoke halogen-free flame-retardant low-noise cable according to claim 1, characterized in that: the metal shielding layer (5) is an annealed oxygen-free copper wire, and a single-side self-adhesive aluminum-plastic composite belt (6) is longitudinally wrapped outside the copper wire winding shielding layer and has the thickness of 0.01 mm-0.2 mm.

6. The high-performance low-smoke halogen-free flame-retardant low-noise cable according to claim 1, characterized in that: the fireproof layer (7) is wrapped by a layer of ceramic silicon rubber belt in an overlapping mode, the overlapping rate of the ceramic silicon rubber belt is not less than 20%, and the thickness of the belt material is 0.14-0.2 mm.

7. The high-performance low-smoke halogen-free flame-retardant low-noise cable according to claim 1, characterized in that: the outer sheath (8) is a low-smoke halogen-free flame-retardant polyolefin sheath.