CN210925565U

CN210925565U - Nanometer type super A-class fire-resistant electric wire

Info

Publication number: CN210925565U
Application number: CN201921876144.8U
Authority: CN
Inventors: 吴惠明
Original assignee: DONGGUAN MINXING CABLES CO LTD
Current assignee: DONGGUAN MINXING CABLES CO LTD
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-07-03
Anticipated expiration: 2029-10-31

Abstract

The utility model relates to a super A class fire-resistant electric wire of nanometer type, including the conductor, the conductor outside is equipped with insulating layer, interior sheath, separates oxygen layer, shielding layer and oversheath from inside to outside in proper order, the conductor is carbon nanotube, the direct cladding of insulating layer is in the carbon nanotube outside, the tinned wire of shielding layer for weaving the whole wicking of rear surface, tinned wire ground connection sets up. As the structure of the carbon nano tube is the same as the lamellar structure of graphite, the carbon nano tube can bear the current of about 10 ten thousand amperes at most, and the superconducting transition temperature is onlyThere is 1.5 × 10^‑4K, which means that only a very small amount of electrical energy is dissipated into heat during the current transmission process of the carbon nanotube 1, and thus, compared with a copper conductor, a fire-resistant layer can be omitted, the number of layers of the fire-resistant wire is reduced, and the flexibility of the fire-resistant wire is improved; meanwhile, the shielding layer is arranged to be the tinned copper wire with the woven whole tin-dipped back surface, so that the hardness defect of the copper pipe is avoided and the soft characteristic of the fire-resistant wire is guaranteed on the premise of achieving the shielding performance.

Description

Nanometer type super A-class fire-resistant electric wire

Technical Field

The utility model relates to a super A class fire-resistant electric wire of nanometer type.

Background

Current fire-resistant electric wire still need wrap the flame retardant coating on the conductor surface except opening the necessary insulating layer of setting up, interior sheath, separating oxygen layer, shielding layer and oversheath, utilizes the high temperature resistant characteristic of flame retardant coating to bear the temperature rise that conductor transmission heavy current arouses, and the guarantee electric wire can not inside be on fire, but the existence of flame retardant coating also can make fire-resistant electric wire's line footpath thickness increase, leads to fire-resistant electric wire's flexibility to descend.

SUMMERY OF THE UTILITY MODEL

The utility model provides a nanometer type super A-class fire-resistant electric wire with good flexibility to improve the defects in the prior art.

Therefore, the nanometer type super A-class fire-resistant electric wire comprises a conductor, wherein an insulating layer, an inner protection layer, an oxygen separation layer, a shielding layer and an outer sheath are sequentially arranged on the outer side of the conductor from inside to outside, the conductor is a carbon nano tube, the insulating layer is directly coated on the outer side of the carbon nano tube, the shielding layer is a tinned copper wire with a woven back surface integrally dipped with tin, and the tinned copper wire is grounded.

Further, the insulating layer is crosslinked polyethylene.

Further, the material of the inner sheath layer is polyvinyl chloride.

Further, the material of the outer sheath is in particular a polyolefin.

Further, the diameter of the carbon nano tube is 0.5-0.9 nm.

Has the advantages that:

as the structure of the carbon nano tube is the same as that of a graphite sheet layer, the carbon nano tube can bear the current of about 10 ten thousand amperes at most, and the superconducting transition temperature is only 1.5 × 10^-4K, which means that only a very small amount of electrical energy is dissipated into heat during the current transmission process of the carbon nanotube 1, and thus, compared with a copper conductor, a fire-resistant layer can be omitted, the number of layers of the fire-resistant wire is reduced, and the flexibility of the fire-resistant wire is improved; meanwhile, the shielding layer is arranged to be the tinned copper wire with the woven whole tin-dipped back surface, so that the hardness defect of the copper pipe is avoided and the soft characteristic of the fire-resistant wire is guaranteed on the premise of achieving the shielding performance.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 shows a schematic cross-sectional structure of a nano-type super class a fire-resistant wire according to the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The nano-type super-a-class fire-resistant wire of the embodiment is used for power transmission, the cross-sectional structure of the nano-type super-a-class fire-resistant wire is a single-wire core structure as shown in fig. 1, the inner core adopts a carbon nano tube with the diameter of 0.7nm as a conductor 1, the carbon nano tube presents superconductivity under the size of the diameter of 0.7nm, the outer side of the carbon nano tube is directly coated with an insulating layer 2, and the insulating layer 2 is made of cross-linked polyethylene (XLPE) and is used for electrical isolation between the carbon nano tube. The outer side of the insulating layer 2 is wrapped by the inner protective layer 3, the inner protective layer 3 is made of polyvinyl chloride, and the function of the inner protective layer is to prevent the insulating layer 2 from contacting with external water, air or other objects, so that the insulating layer 2 is prevented from being affected with damp and mechanical damage.

The outer side of the inner protection layer 3 is coated with an oxygen isolation layer 4, the oxygen isolation layer 4 is formed by mixing various minerals such as aluminum hydroxide, manganese hydroxide and the like according to the existing formula, and the oxygen isolation layer 4 releases crystal water under the high-temperature condition generated by open fire combustion, so that the ignition point is reduced, and the purpose of fire isolation and fire prevention is achieved.

Separate the cladding of 4 outsides on oxygen layer and have shielding layer 5 that ground connection set up, shielding layer 5 is woven the whole tin-dipping of rear surface by tinned wire and is made, and it has two aspect advantages here: firstly, because the braided wire is dipped with tin, the surface of the braided wire can be ensured to be seamless (sealed), so that the braided wire has good shielding performance similar to a semi-hard copper pipe, can form electrostatic shielding, avoids radiation to the outside, and has certain flexibility to avoid reducing the flexibility of a fire-resistant wire; secondly, a metal wrapping tape can be formed to wrap the oxygen-isolating layer 4, so that minerals mixed with the oxygen-isolating layer 4 are prevented from being peeled off and falling out.

The outer side of the shielding layer 5 is coated with the outer sheath 6, the outer sheath 6 is the outermost layer and is made of polyolefin, the outer sheath has the characteristics of wear resistance, corrosion resistance and flame retardance, and importantly, halogen-free and low-smoke gas is emitted during combustion, so that the serious corrosion to surrounding equipment and instruments and serious harm to the human health can be avoided, and the purpose of environmental protection is achieved.

In this embodiment, since the structure of the carbon nanotube is the same as the sheet structure of graphite, the carbon nanotube can carry about 10 ten thousand amperes of current at most, and the superconducting transition temperature is only 1.5 × 10^-4K, which means that only a very small amount of electrical energy is dissipated into heat during the current transmission process of the carbon nanotube 1, and thus, compared with a copper conductor, a fire-resistant layer can be omitted, the number of layers of the fire-resistant wire is reduced, and the flexibility of the fire-resistant wire is improved; meanwhile, the shielding layer 5 is arranged to be a tinned copper wire with the whole braided back surface being tin-dipped, so that the hardness defect of the copper pipe is avoided and the soft characteristic of the fire-resistant wire is guaranteed on the premise of achieving the shielding performance.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the protection scope of the present application, and although the present application is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. The utility model provides a super A class fire-resistant electric wire of nanometer type, includes the conductor, the conductor outside from inside to outside is equipped with insulating layer, interior sheath in proper order, separates oxygen layer, shielding layer and oversheath, its characterized in that:

the conductor is a carbon nano tube, the insulating layer is directly coated on the outer side of the carbon nano tube, the shielding layer is a tinned copper wire with the surface integrally soaked in tin after weaving, and the tinned copper wire is grounded.

2. The nano-type ultra class a fire resistant electrical wire of claim 1, wherein: the insulating layer is crosslinked polyethylene.

3. The nano-type ultra class a fire resistant electrical wire of claim 2, wherein: the material of the inner protective layer is polyvinyl chloride.

4. The nano-type ultra class a fire resistant electrical wire of claim 1, wherein: the material of the outer sheath is in particular a polyolefin.

5. The nano-type ultra class a fire resistant electrical wire of claim 1, wherein: the diameter of the carbon nano tube is 0.5-0.9 nm.