CN210349407U

CN210349407U - Super high temperature resistant electric wire

Info

Publication number: CN210349407U
Application number: CN201921708303.3U
Authority: CN
Inventors: 李锋利; 尚娟琴; 吕伟
Original assignee: Baoji Fenghuo Electric Wire & Cable Co ltd
Current assignee: Baoji Fenghuo Electric Wire & Cable Co ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-04-17
Anticipated expiration: 2029-10-12

Abstract

The utility model discloses a super high temperature resistant electric wire, including the sinle silk body, the sinle silk body is formed by the transposition of a plurality of pure nickel round silk threads, be equipped with high temperature resistant insulating filling layer between the pure nickel round silk thread, high temperature resistant insulating filling layer outside is provided with the fastening layer, the fastening layer outside is provided with the shielding layer, the insulating heat-resistant layer of shielding layer outer cladding one deck teflon extrusion. The utility model has excellent high temperature resistance, and can ensure the safe operation of electric power and signals of the electric wire under the high temperature condition of more than 200 ℃ in special industry, the cable can work normally and stably, the transmission performance of the signals or the electric energy is not affected, and the cable can be ensured to have longer service life; and the production length is not limited, and large-scale production can be realized.

Description

Super high temperature resistant electric wire

Technical Field

The utility model relates to a wire and cable field especially relates to a super high temperature resistant electric wire.

Background

The common electric wire and cable uses plastic and rubber as insulating sheaths, and the materials are conventional engineering materials, have rich sources, can meet the requirement of large-scale production, and have relatively low cost. However, for some special industries such as petrochemical industry, steel, aerospace, shipbuilding, military industry, pharmacy, food, plastic machinery, boilers and other industries related to heat and high temperature, wires and cables capable of resisting higher temperature are needed, ordinary wires and cables cannot be used obviously, and wires and cables capable of resisting high temperature are needed to ensure safe operation of electric power and signals.

Along with the rapid development of economy in China, the demand of the special industry on the ultra-high temperature resistant cable has been greatly increased at a high speed, the ultra-high temperature resistant cable is increased at a speed of 20% every year, the high temperature cable is used as an important component of the special cable, the ultra-high temperature cable and the high temperature cable are important trends, although the high temperature cable has large electric energy loss, in some high-temperature occasions, the common cable is extremely easy to damage, the ultra-high temperature cable can safely operate, and the ultra-high temperature cable is an indispensable variety in modern industry and military industry.

The existing common cable is easy to generate insulation aging and scorching phenomena at high temperature, so that the cable loses performance and cannot be used due to damage; the temperature resistance of a common high-temperature-resistant cable can reach 105 ℃, 125 ℃, 135 ℃ and 150 ℃, but the high-temperature cable still can not meet the transmission of electric power or electric signals under the temperature environment of more than 200 ℃; the inorganic material ultra-high temperature cable has excellent high temperature performance and can meet the requirements of special high temperature industries, but the inorganic material does not have plasticity, so that the cable insulation is difficult to process and form, for example, the mineral insulation fireproof cable product structure is a copper core copper sheath magnesium oxide insulation cable, the conventional temperature is 250 ℃, but the actual working temperature is higher, the production length of the mineral insulation fireproof cable is limited to a certain extent, and the large size is shorter; the sintered cable can resist the temperature of 250 ℃, and the extruded cable can resist the temperature of 200 ℃, but the cable has a large number of short sections, is not suitable for occasions with large space span in the environment with the temperature of more than 200 ℃, and can not meet the requirements of the existing high-temperature-resistant small-sized electric wire.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect or not enough, an object of the utility model is to provide a super high temperature resistant electric wire.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a super high temperature resistant electric wire, includes the sinle silk body, the sinle silk body is formed by the transposition of a plurality of pure nickel round silk threads, be equipped with high temperature resistant insulating filling layer between the pure nickel round silk thread, high temperature resistant insulating filling layer outside is provided with the fastening layer, the fastening layer outside is provided with the shielding layer, the insulating heat-resistant layer of shielding layer cladding one deck teflon extrusion.

The high-temperature-resistant insulating filling layer is made of glass fiber spraying cotton.

The fastening layer is internally provided with fasteners, and the annular arrays of the fasteners are arranged in the fastening layer.

The shielding layer is of a net structure made of braided copper wire materials.

The wire core body is formed by twisting 5-8 pure nickel round wires.

The diameter of the pure nickel round wire is 0.15-0.25mm, and the pure nickel round wire is stranded at a pitch of 10-12 mm to form a wire core body.

The diameter of the super high temperature resistant wire is 0.65-0.95 mm.

The thickness of the Teflon extruded insulation heat-resistant layer is 0.15-0.25 mm.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a conductor core, high temperature resistant filling layer, the fastening layer, the shielding layer, the structural design of insulating heat-resistant layer and heat-resisting inoxidizing coating are extruded to the teflon, the problem that traditional electric wire high temperature resistance can be poor is solved, the problem of the holistic electric conductivity and the quality of electric wire has been solved simultaneously, guarantee the safe operation of electric wire electric power and signal, when meetting high temperature, traditional electric wire easily produces insulating ageing and scorching phenomenon, this super high temperature resistant electric wire possesses good high temperature resistance, can satisfy more under the special industry exceeds 200 ℃ high temperature condition, guarantee the safe operation of electric wire electric power and signal, the cable can normally work steadily, signal or electric energy transmission performance are not influenced, can also guarantee that the cable has longer life; and the production length is not limited, and large-scale production can be realized.

The utility model adopts the pure nickel round wire as the core conductor, which is high temperature resistant (the melting point is 1455 ℃, so the service temperature can reach 1000 ℃, the temperature resistance in short time can be higher) in high temperature environment, and the electric conductivity is excellent, and the performance of the electric wire is not affected; the high-temperature-resistant insulating filling layer 3 can insulate heat and enhance the tensile strength of the cable core body; the fastening layer 4 provides good compression resistance and tensile resistance for the cable; the insulating heat-resistant layer is extruded by the Teflon, so that the ultrahigh temperature resistance, corrosion resistance and aging resistance of the cable are met, and the service life of the wire is prolonged.

Drawings

FIG. 1 is a schematic cross-sectional structure of the present invention;

fig. 2 is the schematic diagram of the cross-sectional structure of the core body of the present invention.

In the figure, 1-a pure nickel round wire; 2-a core body; 3-high temperature resistant insulating filling layer; 4-a fastening layer; 5, a fastener; 6-a shielding layer; 7-Teflon extruded insulating heat-resistant layer.

Detailed Description

The present invention will be described in detail with reference to the drawings, and it should be understood 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.

As shown in fig. 1 and 2, an ultra-high temperature resistant electric wire comprises a wire core body 2, the wire core body 2 is formed by twisting a plurality of pure nickel round wire threads 1, a high temperature resistant insulating filling layer 3 is arranged between the pure nickel round wire threads 1, a fastening layer 4 is arranged on the outer side of the high temperature resistant insulating filling layer 3, a shielding layer 6 is arranged on the outer side of the fastening layer 4, and a Teflon extruded insulating heat-resistant layer 7 is coated outside the shielding layer 6.

Preferably, the high-temperature-resistant insulating filling layer 3 is glass fiber spraying cotton, and is used for electrical insulation and heat insulation, preventing external high temperature from radiating to the cable core, reducing invasion of heat energy, and enhancing the tensile strength of the cable core body 2.

Specifically, fastening layer 4 is inside to be provided with fastener 5, fastener 5 circular array sets up in fastening layer 4, provides good resistance to compression, tensile ability.

In the utility model, the shielding layer 6 is arranged into a net structure made of braided copper wire materials, and the shielding layer 6 is braided by adopting an annealing round copper wire or a tinned soft round copper wire; on one hand, the power cable can shield the electromagnetic field in the cable by adding the shielding layer in order not to influence other elements because the current passing through the power cable is larger, and on the other hand, the power cable is also used for shielding external influence, is afraid of the influence of the external electromagnetic field, and can play a certain grounding protection role if the current generated by breakage and leakage in the cable core wire can flow into the grounding net at the end of the cable along the shielding layer to play a safety protection role.

Preferably, the thickness of the teflon extruded insulating heat-resistant layer 7 is 0.15-0.25mm, which is to be noted that, because teflon has: since the insulation layer 7 made of teflon has the following properties such as non-tackiness, heat resistance, sliding property, moisture resistance, abrasion resistance, and corrosion resistance: the material has excellent thermal stability, mechanical wear resistance and electrical insulation performance, strong acid and strong alkali resistance, corrosion resistance, fire resistance, non-flammability, high oxygen index, low smoke, zero halogen, no aging, easy wire stripping, high strength and friction resistance; the Teflon extruded insulation layer 7 has the heat-resistant temperature of 260 ℃ to 300 ℃ after long-time work and the instant high-temperature resistance of 400 ℃.

The insulating heat-resistant layer 7 extruded by the high-temperature-resistant Teflon has good heat-resistant performance, does not generate harmful gas, is not oxidized below 600 ℃, has good strength at high temperature, resists corrosion, well protects the wire core from being damaged and ensures that the conductive performance of the wire core is not affected.

The diameter of the pure nickel round wire is 0.15-0.25mm, and the pure nickel round wire is stranded at a pitch of 10-12 mm to form a wire core body 2, so that the conductive wire core body 2 has high conductivity, particularly excellent tensile resistance, bending resistance and weldability, is not oxidized below 600 ℃, has good strength at high temperature, and is resistant to strong alkali and weak acid; the wire core body 2 is formed by twisting 5-8 pure nickel round wire yarns 1; the diameter of the super high temperature resistant wire is 0.65-0.95 mm. The heat-resistant temperature of the wire core made of pure nickel can reach 1250 ℃, so that the normal conducting capacity of the conductor under the condition of ultrahigh temperature is ensured.

The utility model discloses be not limited to above-mentioned embodiment, also can increase or reduce the conductive wire core radical or increase shielding structure as required. In addition, the present invention may have various changes in shape and color.

It should be apparent to those skilled in the art that the above embodiments are only preferred embodiments of the present invention, and therefore, the modifications and changes that can be made by those skilled in the art to some parts of the present invention still embody the principles of the present invention, and the objects of the present invention are achieved, all falling within the scope of the present invention.

Claims

1. The utility model provides a super high temperature resistant electric wire, its characterized in that includes sinle silk body (2), sinle silk body (2) are formed by a plurality of pure nickel round silk threads (1) transposition, be equipped with high temperature resistant insulating filling layer (3) between pure nickel round silk threads (1), high temperature resistant insulating filling layer (3) outside is provided with fastening layer (4), the fastening layer (4) outside is provided with shielding layer (6), shielding layer (6) outer cladding one deck teflon extrusion insulating heat-resistant layer (7).

2. The super high temperature resistant electric wire according to claim 1, wherein the high temperature resistant insulating filling layer (3) is glass fiber sprayed cotton.

3. The ultra-high temperature resistant wire according to claim 1, wherein the fastening layer (4) is internally provided with fasteners (5), and the fasteners (5) are arranged in an annular array in the fastening layer (4).

4. The ultra-high temperature resistant wire according to claim 1, wherein the shielding layer (6) is provided as a net structure of braided copper wire material.

5. The super high temperature resistant wire according to claim 1, wherein the wire core body (2) is formed by twisting 5-8 pure nickel round wire threads (1).

6. The super high temperature resistant wire according to claim 1, wherein the diameter of the pure nickel round wire (1) is 0.15-0.25mm, and the wire core body (2) is formed by stranding a plurality of wires at a pitch of 10-12 mm.

7. The ultra-high temperature resistant wire according to claim 1, wherein the diameter of the ultra-high temperature resistant wire is 0.65-0.95 mm.

8. The super high temperature resistant electric wire as claimed in claim 1, wherein the thickness of the Teflon extruded insulation heat resistant layer (7) is 0.15-0.25 mm.