CN209785617U - Novel environment-friendly self-crosslinking polyolefin flame-retardant wire - Google Patents

Abstract

The utility model relates to a novel environmental protectionThe self-crosslinking flame-retardant polyolefin wire comprises a conductor, wherein a self-crosslinking flame-retardant polyolefin insulating layer is extruded outside the conductor, and the sectional area of the conductor is 1.5-240mm²The geometric shape of the conductor is a circle, and the conductor is an annealed copper conductor or a tin-plated copper conductor or a soft copper conductor. The utility model discloses the requirement of no halogen-free electric wire can be satisfied in the self-crosslinking to the small investment, with low costs, quality problems are few, more environmental protection.

Description

Novel environment-friendly self-crosslinking polyolefin flame-retardant wire

Technical Field

The utility model relates to a cable, concretely relates to fire-retardant electric wire of self-crosslinking polyolefin.

Background

With the rapid development of national economy, the using amount and the application range of the cable used as the main artery of the national economy are larger and larger. In recent years, the demand of industries such as power plants, transformer substations, smelting, petrochemical industry and the like on cables is extremely large. At present, the fire caused by the aging of wires and cables is increasing, and the crosslinking mode is irradiation crosslinking or silane crosslinking, because an electron accelerator of an irradiation device can generate a large amount of radiation in production to cause damage to people, and the device starts to limit new production lines in many cities.

Disclosure of Invention

The purpose of the invention is as follows: the utility model aims at overcoming the not enough among the prior art, provide a self-crosslinking can satisfy the requirement of not having the steamed electric wire to the novel environmental protection self-crosslinking polyolefin fire-retardant electric wire of less investment, with low costs, quality problems are few, more environmental protection.

The technical scheme is as follows: in order to solve the technical problem, the utility model relates to a novel fire-retardant electric wire of environmental protection self-crosslinking polyolefin, it includes the conductor outside is crowded to wrap and is equipped with self-crosslinking type fire-retardant polyolefin insulating layer, the sectional area of conductor is 1.5-240mm²The geometric shape of the conductor is a circle, and the conductor is an annealed copper conductor or a tin-plated copper conductor or a soft copper conductor.

The conductor is formed by concentrically twisting a plurality of soft round copper wires with the same diameter, and the twisting directions of adjacent twisting layers are opposite.

The conductor is made of a plurality of small diameter tinned copper strands.

The utility model discloses mainly be used in the building room wiring.

Has the advantages that: compared with the prior art, the utility model, it is showing the advantage and is: the utility model has the advantages of reasonable overall structure, the conductor adopts the crowded package of fire-retardant polyolefin insulating material of self-crosslinking type outward, the conductor is formed by the concentric system of twisting of the soft round copper wire that a plurality of diameters are the same, and the transposition opposite direction on adjacent hank layer, increase the compactness of conductor, also can adopt tin-plated soft copper conductor, it forms to restraint the system by many tiny diameter tin-plated copper wires, strengthen the softness performance of conductor, and reach the corrosion protection, the insulating material has excellent electrical property, thermal aging performance, and through self-crosslinking under the natural light environment, week about winter, about 3 days in summer, reach the crosslinking purpose, reinforcing material's electrical property and mechanical properties.

Drawings

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

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in figure 1, the novel environment-friendly self-crosslinking polyolefin flame-retardant wire comprises a conductor 1, wherein a self-crosslinking type flame-retardant polyolefin insulating layer 2 is extruded outside the conductor 1, and the sectional area of the conductor 1 is 1.5-240mm²The geometric shape of the cable is circular, the cable is formed by concentrically twisting a plurality of soft round copper wires with the same diameter, the twisting directions of adjacent twisting layers are opposite, the tightness of the conductor is increased, or the cable is formed by adopting a tinned soft copper conductor and bundling a plurality of tin-plated copper wires with small diameters, the flexibility of the conductor is enhanced, the corrosion resistance is achieved, the insulating material has excellent electrical performance and thermal aging performance, the cable is automatically crosslinked under the natural light environment, the crosslinking purpose is achieved in about one week in winter and about 3 days in summer, and the electrical performance and the mechanical performance of the material are enhanced.

The utility model provides a thinking and method, the method and the way of specifically realizing this technical scheme are many, above only the utility model discloses a preferred embodiment should point out, to the ordinary technical personnel in this technical field, not deviating from the utility model discloses under the prerequisite of principle, can also make a plurality of improvements and moist decorations, these improvements should also be regarded as the utility model discloses a protection range, each component that does not make clear and definite in this embodiment all can be realized with prior art.

Claims (3)

1. A novel environment-friendly self-crosslinking polyolefin flame-retardant wire is characterized in that: the cable comprises a conductor (1), wherein a self-crosslinking flame-retardant polyolefin insulating layer (2) is extruded outside the conductor (1), and the sectional area of the conductor (1) is 1.5-240mm²The geometric shape of the conductor is a circle, and the conductor is an annealed copper conductor or a tin-plated copper conductor or a soft copper conductor.

2. The novel environment-friendly self-crosslinking polyolefin flame-retardant wire according to claim 1, characterized in that: the conductor (1) is formed by concentrically twisting a plurality of soft round copper wires with the same diameter, and the twisting directions of adjacent twisting layers are opposite.

3. The novel environment-friendly self-crosslinking polyolefin flame-retardant wire according to claim 1, characterized in that: the conductor (1) is made of a plurality of small-diameter tinned copper wire bundles.