Novel flame-retardant fireproof twisted-pair shielding wire

Abstract

The utility model discloses a novel flame-retardant fire-resistant twisted-pair shielding wire, which comprises a cable sheath, the inner wall of the cable sheath is provided with a high polymer flame-retardant material, the inner wall of the high polymer flame-retardant material is provided with a shielding layer, the inner wall of the shielding layer is provided with a filling layer, the inner wall of the filling layer is wrapped with reinforcing steel bars, and the inner wall of the filling layer is provided with a flame-retardant layer. Inner wires are arranged at the two ends of the inner wall of the filling layer, and conductors are arranged on the inner walls of the inner wires. According to the novel flame-retardant fire-resistant twisted-pair shielded wire, the cable sheath and the high polymer flame-retardant material made of flame-retardant PP plastic are arranged, and the wear resistance of the wire can be improved through the thicker cable sheath, so that the danger of electric leakage caused by damage of the wire due to long-time external force wear can be avoided; and meanwhile, through the high polymer flame-retardant material made of flame-retardant PP plastic, the flame retardance of the electric wire can be improved under the condition of high temperature or open fire around, and the electric wire is prevented from being burnt due to the high temperature or the open fire.

Description

Technical Field

[0001] The utility model relates to the technical field related to electric wires, in particular to a novel flame-retardant and fire-resistant twisted-pair shielded electric wire. Background Art

[0002] Electric wire refers to the conductor for transmitting electric energy, which is divided into bare wire, electromagnetic wire and insulated wire. Bare wire has no insulation layer, including copper, aluminum flat wire, overhead stranded wire and various profiles (such as profiled wire, busbar, copper busbar, aluminum busbar, etc.). It is mainly used for outdoor overhead and indoor busbars and switch boxes. Electromagnetic wire is an insulated wire that generates a magnetic field or induces current in a magnetic field when energized. It is mainly used for motor and transformer windings and other related electromagnetic equipment. Its conductor is mainly copper wire, which should have a thin insulation layer and good electrical and mechanical properties, as well as heat resistance, moisture resistance, solvent resistance and other properties. Different insulating materials can be used to obtain different properties. Therefore, a new flame-retardant and fire-resistant twisted pair shielded wire is urgently needed.

[0003] The twisted-pair shielded wires currently in use have poor flame retardancy and low bending resistance. When the wires are bent, the internal conductors are easily broken, which affects their use. Utility Model Content

[0004] The utility model aims to provide a novel flame retardant and fire resistant twisted pair shielded wire to solve the problem that the currently used twisted pair shielded wire proposed in the above background technology has poor flame retardancy and low bending resistance, which easily causes the internal wire to break when the wire is bent, thus affecting the use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel flame-retardant and fire-resistant twisted-pair shielded electric wire, comprising a cable sheath, the inner wall of the cable sheath is provided with a polymer flame-retardant material, and the inner wall of the polymer flame-retardant material is provided with a shielding layer, the inner wall of the shielding layer is provided with a filling layer, and the inner wall of the filling layer is wrapped with steel bars, inner conductors are provided at both ends of the inner wall of the filling layer, and the inner wall of the inner conductor is provided with a conductor.

[0006] Preferably, the polymer flame retardant material is made of flame retardant PP plastic.

[0007] Preferably, the material of the shielding layer is a tinned copper metal mesh braided layer.

[0008] Preferably, the inner conductors are symmetrically arranged with the central axis of the steel bar as the axis, and the inner conductors are in a winding structure.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The novel flame-retardant and fire-resistant twisted-pair shielded wire has a cable sheath and a high polymer flame-retardant material made of flame-retardant PP plastic. The thick cable sheath can improve the wear resistance of the wire, and can prevent the wire from being damaged by external wear for a long time, resulting in the risk of leakage. At the same time, the high polymer flame-retardant material made of flame-retardant PP plastic can improve the flame retardancy of the wire under high temperature or open flames around it, and prevent the wire from burning due to high temperature or open flames.

[0011] 2. This new type of flame-retardant and fire-resistant twisted-pair shielded wire is made of tinned copper metal mesh woven layer, shielding layer and steel bars. When in use, a shielding layer is added to the outside of the wire to resist external electromagnetic interference, so as to reduce the influence of external electromagnetic fields on power supply or communication lines. At the same time, the steel bars can improve the bending resistance of the entire wire to avoid the internal wire breaking when the wire is bent, affecting its use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a top sectional view of the utility model;

[0013] Figure 2 This is the front view of the utility model;

[0014] Figure 3 For this utility model Figure 1 Schematic diagram of the enlarged structure of part A in the middle.

[0015] In the figure: 1. Cable sheath; 2. Polymer flame retardant material; 3. Shielding layer; 4. Filling layer; 5. Steel bars; 6. Inner wire; 7. Conductor. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3The utility model provides a technical solution: a novel flame retardant and fire resistant twisted pair shielded wire, comprising a cable sheath 1, the inner wall of the cable sheath 1 is provided with a polymer flame retardant material 2, the material of the polymer flame retardant material 2 is flame retardant PP plastic, by providing the cable sheath 1 and the polymer flame retardant material 2 whose material is flame retardant PP plastic, the thicker cable sheath 1 can improve the wear resistance of the wire, and can avoid the wire being damaged due to long-term wear and tear by external force, resulting in the risk of leakage, and at the same time, the polymer flame retardant material 2 whose material is flame retardant PP plastic can improve the flame retardancy of the wire under high temperature or when there is open flame around, and avoid the wire from burning due to high temperature or open flame.

[0018] A shielding layer 3 is provided on the inner wall of the polymer flame retardant material 2, and the material of the shielding layer 3 is a tin-plated copper metal mesh woven layer. A filling layer 4 is provided on the inner wall of the shielding layer 3, and the inner wall of the filling layer 4 is wrapped with steel bars 5. Inner conductors 6 are provided at both ends of the inner wall of the filling layer 4. The inner conductors 6 are axially symmetrically arranged with the central axis of the steel bars 5 as the axis, and the inner conductors 6 are in a winding structure, and the inner wall of the inner conductor 6 is provided with a conductor 7. The materials provided are the tin-plated copper metal mesh woven layer shielding layer 3 and the steel bars 5. In this way, when in use, a shielding layer 3 is added outside the wire to resist external electromagnetic interference, so as to reduce the influence of the external electromagnetic field on the power supply or communication line. At the same time, the steel bars 5 can improve the bending resistance of the overall wire to avoid the internal wire breaking when the wire is bent, thereby affecting the use.

[0019] Working principle: When in use, firstly, the thicker cable sheath 1 can improve the wear resistance of the wire, so as to avoid the wire being damaged due to long-term wear and tear by external force, which may lead to the risk of leakage. At the same time, the polymer flame retardant material 2 made of flame retardant PP plastic can improve the flame retardancy of the wire under high temperature or open flame conditions to avoid the wire from burning due to high temperature or open flame. In addition, a shielding layer 3 is added to the outside of the conductor to resist external electromagnetic interference, so as to reduce the influence of external electromagnetic field on power supply or communication lines. At the same time, the steel bar 5 can improve the bending resistance of the whole wire, so as to avoid the internal wire breaking when the wire is bent, which may affect the use, thereby improving the safe use of the wire. In this way, the operation process of a new flame retardant and fire-resistant twisted pair shielded wire is completed.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of flame retardant and fire resistant twisted pair shielded wire, characterized in that: The invention comprises a cable sheath (1), wherein the inner wall of the cable sheath (1) is provided with a polymer flame retardant material (2), and the inner wall of the polymer flame retardant material (2) is provided with a shielding layer (3), the inner wall of the shielding layer (3) is provided with a filling layer (4), and the inner wall of the filling layer (4) is wrapped with steel bars (5), inner conductors (6) are provided at both ends of the inner wall of the filling layer (4), and the inner wall of the inner conductor (6) is provided with a conductor (7).

2. A novel flame retardant and fire resistant twisted pair shielded wire according to claim 1, characterized in that: The material of the high polymer flame retardant material (2) is flame retardant PP plastic.

3. A novel flame retardant and fire resistant twisted pair shielded wire according to claim 1, characterized in that: The material of the shielding layer (3) is a tinned copper metal mesh braided layer.

4. A novel flame retardant and fire resistant twisted pair shielded electric wire according to claim 1, characterized in that: The inner conductors (6) are arranged symmetrically with the central axis of the steel bar (5), and the inner conductors (6) are in a winding structure.

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