CN218918502U

CN218918502U - Double-layer flame-retardant wire

Info

Publication number: CN218918502U
Application number: CN202222111493.9U
Authority: CN
Inventors: 蒋俊标
Original assignee: Sichuan Dianli Cable Manufacturing Co ltd
Current assignee: Sichuan Dianli Cable Manufacturing Co ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2023-04-25
Anticipated expiration: 2032-08-11

Abstract

The utility model provides a double-layer flame-retardant wire, which comprises four conductive core wires, wherein the outer surface walls of the four conductive core wires are fixedly sleeved with insulating inner layers, the outer surface walls of the four insulating inner layers are fixedly sleeved with insulating inner layers, wire shielding layers are fixedly sleeved between the outer surface walls of the four insulating inner layers, the double-layer flame-retardant wire has good heat insulation, high temperature resistance and fireproof performance, fire disasters caused by short circuit of wires due to overhigh temperature of the wires can be reduced, the produced wires are low in heat generation in the electrifying process, the safety and environmental protection performance are greatly improved, the double-layer flame-retardant wire is suitable for a series of important places such as hospitals and schools, the shielding layers are arranged to reduce magnetic fields generated around due to overlarge current conducted by the wires, so that the application of other electronic elements is influenced, the electromagnetic fields can be shielded inside the wires by the wire shielding layers, and the electromagnetic energy is prevented from radiating outwards by the wires.

Description

Double-layer flame-retardant wire

Technical Field

The utility model relates to the technical field of electric wire flame retardance, in particular to a double-layer flame-retardant electric wire.

Background

The electric wire is a conducting wire for conveying electric energy, the basic structure of the electric wire is composed of a conducting mechanism, an insulating layer and a heat insulating layer, the bare wire is free of the insulating layer and comprises copper, aluminum flat wires, overhead stranded wires and various sectional materials (such as molded lines, buses, copper bars, aluminum bars and the like), the electric wire is mainly used for outdoor overhead and indoor bus bars and switch boxes, and the electromagnetic wire is an insulating conducting wire which generates a magnetic field or induces current in the magnetic field after being electrified and is mainly used for a motor and transformer winding and other related electromagnetic equipment. The conductor is mainly copper wire, has thin insulating layer and good electrical and mechanical properties, and has heat resistance, moisture resistance, solvent resistance and other properties, and different insulating materials can be selected to obtain different characteristics.

In daily life, the wire joints are poor, so that the line resistance is excessive and the heating is generated, the circuit is provided with the joints, or two groups of wires are connected or connected with other electrical equipment, if the joints are not connected, the current can be prevented from flowing in the wires, and a large amount of heat energy is generated. When the heat energy is enough to melt the insulating layer and the heat insulation layer of the electric wire, the wires can fire, and the combustible materials nearby are ignited, and the circuit is overloaded, when the temperature of the electric wire exceeds 250 ℃, the rubber or plastic insulating layer of the electric wire can fire and burn, if the outer sleeve of the electric wire is damaged, short circuit can be caused, the fire hazard is higher, and in addition, if an out-of-specification fuse is selected, the overload of the circuit can not be found in time, and the hidden danger can be realized.

Disclosure of Invention

The utility model aims to provide a double-layer flame-retardant wire which has good heat insulation, high temperature resistance and fireproof performance, not only can reduce fire disaster caused by short circuit of wires due to overhigh temperature of the wires, but also is provided with multiple layers of flame retardance, so that the produced wires generate lower heat in the electrifying process, the safety and environmental protection performance are greatly improved, the double-layer flame-retardant wire is suitable for a series of large places such as hospitals, schools and supermarkets, the surrounding magnetic field generated by overlarge current conducted by the wires can be reduced by a shielding layer, the use of electronic elements is affected, the electromagnetic field can be shielded inside the wires by the wire shielding layer, and the electromagnetic energy can be prevented from being radiated outwards by the wires.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the double-layer flame-retardant wire comprises four conductive core wires, wherein the outer surface walls of the four conductive core wires are fixedly sleeved with insulating inner layers, the outer surface walls of the four insulating inner layers are fixedly sleeved with insulating inner layers, and a wire shielding layer is fixedly sleeved between the outer surface walls of the four insulating inner layers.

Preferably, the outer surface wall of the wire shielding layer is fixedly sleeved with an insulating outer layer.

Preferably, the outer surface wall of the insulating outer layer is fixedly sleeved with the insulating outer layer.

Preferably, the outer surface wall of the heat insulation outer layer is fixedly sleeved with an electric wire outer layer sheath.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. according to the utility model, the double-layer safety heat insulation flame-retardant arrangement is adopted outside the conductive core wire, so that the occurrence of fire caused by temperature rise due to short circuit of the electric wire can be greatly reduced to a certain extent, when the conductive core wire is in short circuit or poor in contact during current transmission, a large amount of heat energy is generated inside the conductive core wire, the heat is blocked inside the conductive core wire by the insulating inner layer and the heat insulation inner layer arranged outside the conductive core wire, the internal electric wire is broken due to circuit aging, and the heat caused by the short circuit of the electric wire can be well limited inside the conductive core wire by the second layer of insulating heat insulation material arranged outside the conductive core wire, so that the fire caused by heat leakage is well prevented.

2. In the utility model, an electric wire shielding layer is arranged in the electric wire, and the electric wire with the capability of resisting external electromagnetic interference is formed by a mode of adding the shielding layer in the current transmission process.

Drawings

Fig. 1 is a perspective view of a front view structure of a double-layer flame-retardant wire according to the present utility model;

FIG. 2 is a plan view of a front view of a structure of a double-layer flame-retardant wire according to the present utility model;

fig. 3 is a perspective sectional view of a structure of a double-layer flame-retardant wire according to the present utility model.

Legend description: 1. a conductive core wire; 2. an insulating inner layer; 3. a heat insulating inner layer; 4. a wire shielding layer; 5. an insulating outer layer; 6. an outer insulating layer; 7. and an outer sheath of the electric wire.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

The embodiment of the utility model is shown in fig. 1-3, the utility model provides a double-layer flame-retardant wire, which comprises four conductive core wires 1, wherein the outer surface walls of the four conductive core wires 1 are fixedly sleeved with insulating inner layers 2, the outer surface walls of the four insulating inner layers 2 are fixedly sleeved with insulating inner layers 3, wire shielding layers 4 are fixedly sleeved between the outer surface walls of the four insulating inner layers 3, after the wire is electrified, the conductive core wires 1 serve as a medium for conducting current and have good conductivity, the outer surface walls of the wire are sleeved with the insulating inner layers 2, the insulating inner layers 3 serve as heat insulation materials inside the conductive core wires 1, when the current is short-circuited in the transmission process, heat energy is limited inside the insulating inner layers through the insulating inner layers 3, the outer surface walls of the four insulating inner layers 3 are fixedly sleeved with wire shielding layers 4, in the current transmission process, the current is concentrated due to overlarge current, the wire shielding layers 4 are sleeved on the outer surface walls of the current conducting wires, the wire shielding layers 4 are also used for improving the distribution of the electric field inside the shielding layers, thus the electric field inside the wire shielding layers is easy to reduce the electric field distribution inside the wire, and the wire shielding layers are also easy to be in contact with the insulating inner layers, and the surface of the insulating inner layers 5 are also good layers when the wire is in the partial electric field, and the electric shielding layers are in the partial electric discharge is good, and the surface of the insulating layer is in the insulation, and the electric cable is in the partial electric discharge is prevented, and the surface crack is caused.

The outer surface wall of the electric wire shielding layer 4 is fixedly sleeved with an insulating outer layer 5, and when the outer wall of the electric wire shielding layer 4 is sleeved with the insulating outer layer 5, heat energy is leaked for preventing current from being broken and leaked due to an inner pipeline, so that secondary sealing is formed.

The outer surface wall of the insulating outer layer 5 is fixedly sleeved with the insulating outer layer 6, the insulating outer layer 6 is arranged to prevent the internal wires from overheating, and a second layer of protection measures is arranged outside.

The outer surface wall of the heat insulation outer layer 6 is fixedly sleeved with an electric wire outer sheath 7, so as to prevent various conditions outside from being protected from damaging the line when the line works.

The whole structure achieves the following effects: after the electric wire is electrified, the electric current starts to flow through the conductive core wire 1, the outer surface wall of the conductive core wire 1 is sleeved with the insulating inner layer 2, the flowing direction of the electric charge starts to be limited, the electric charge is tightly bound in the electric wire, the loss caused by the leakage of the electric current is reduced, the electric wire terminal is poor, the heat generated by overlarge line resistance is caused, the heat insulation inner layer 3 has better heat insulation property, high temperature resistance and fireproof performance, the heat caused by the short circuit of the electric wire is limited in the electric wire, the occurrence of fire disaster caused by the leakage of the heat is reduced, the electric wire shielding layer 4 is arranged on the outer surface wall of the heat insulation layer, because if the electric current passing through the electric wire is overlarge, a magnetic field is generated around the electric current, in order not to influence other elements, the electromagnetic field can be shielded inside the electric wire by the arranged electric wire shielding layer 4, the electromagnetic energy radiated outside by the electric wire can be prevented, the insulating outer layer 5 is arranged on the outer surface wall of the electric wire shielding layer 4, the insulating outer layer 6 is arranged on the outer surface wall of the insulating outer layer 5, the electric wire shielding layer 4 is taken as an intermediate point, a group of flame-retardant electric wire mechanisms are respectively arranged inside and outside the electric wire shielding layer to prevent overhigh heat caused by overlarge electric wire resistance inside or rupture of the inner insulating inner layer 2 and the heat insulating inner layer 3 caused by ageing of the electric wire, the heat caused by short circuit of the electric wire can be well limited inside by the second insulating heat insulating material arranged outside the electric wire shielding layer, and the electric wire outer layer sheath 7 sleeved on the outer surface wall of the insulating outer layer 6 is used for preventing various conditions outside from damaging the electric wire when the electric wire works.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. A double-layer flame-retardant wire, characterized in that: the novel electric wire comprises four conductive core wires (1), wherein the outer surface walls of the four conductive core wires (1) are fixedly sleeved with insulating inner layers (2), the outer surface walls of the four insulating inner layers (2) are fixedly sleeved with insulating inner layers (3), and electric wire shielding layers (4) are fixedly sleeved between the outer surface walls of the four insulating inner layers (3).

2. The double-layer flame-retardant wire according to claim 1, wherein: an insulating outer layer (5) is fixedly sleeved on the outer surface wall of the electric wire shielding layer (4).

3. The double-layer flame-retardant wire according to claim 2, wherein: the outer surface wall of the insulating outer layer (5) is fixedly sleeved with a heat insulation outer layer (6).

4. A double-layer flame-retardant wire according to claim 3, wherein: the outer surface wall of the heat insulation outer layer (6) is fixedly sleeved with an electric wire outer sheath (7).