CN218333166U

CN218333166U - Three-layer co-extrusion flame-retardant insulated overhead cable for laying in jungle

Info

Publication number: CN218333166U
Application number: CN202221565370.6U
Authority: CN
Inventors: 王国新; 杨忠兴; 吴荣毓; 许章波
Original assignee: Yunnan Juli Cable Co ltd
Current assignee: Yunnan Juli Cable Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2023-01-17
Anticipated expiration: 2032-06-22

Abstract

The utility model discloses a lay with three-layer crowded fire-retardant insulating aerial [ insulated ] cable altogether in jungle, including the sinle silk, the outside cover of sinle silk is equipped with crosslinked type semi-conductive shielding layer, the fixed cover in outside of crosslinked type semi-conductive shielding layer is equipped with the copper wire around the covering, the copper wire is equipped with fire-retardant layer around the external fixation cover of covering, the fixed cover in outside on fire-retardant layer is equipped with the elastic layer, the fixed cover in outside of elastic layer is equipped with corrosion resistant layer, fire-retardant layer includes the mica tape around the covering. The utility model discloses possess that fire behaviour is good, corrosion resisting property is good and shielding property is good advantage, it is single to lay in the current jungle with aerial [ insulated ] cable structure, and fire behaviour is poor, burns easily when meetting high temperature or conflagration, causes stretching of intensity of a fire, and corrosion resisting property is poor, suffers the corruption easily under the factor of external environment, has reduced the life of self, and shielding property is poor simultaneously, has reduced and has laid the problem with aerial [ insulated ] cable suitability in the jungle.

Description

Three-layer co-extrusion flame-retardant insulating overhead cable for laying in jungle

Technical Field

The utility model relates to an aerial [ insulated ] cable technical field specifically is a lay in jungle with fire-retardant insulating aerial [ insulated ] cable of three-layer crowded altogether.

Background

The overhead cable (full-name overhead insulated cable) is an overhead conductor with insulating layer and protective sheath, and is a special cable made up by adopting a production process similar to crosslinked cable, and is a new power transmission mode between overhead conductor and underground cable, and the overhead cable is made up by using single-core structure, and can be divided into duralumin wire structure, aluminium alloy wire structure, steel core or aluminium alloy core supporting structure and self-supporting three-core combined structure (core can be duralumin or duralumin wire) according to its different structure, etc. so that it possesses the main characteristics of high power supply reliability, good power supply safety, convenient erection and maintenance and reasonable economy. The main technical parameters comprise weather resistance, insulation level, inner and outer semi-conductive shielding layers. The overhead cable has wide transmission application at home and abroad.

The aerial cable for laying in the existing jungle has the advantages of single structure, poor flame retardant property, easiness in burning when encountering high temperature or fire, capability of causing the spread of fire, poor corrosion resistance, easiness in corrosion under the factors of external environment, reduction of the service life of the aerial cable, poor shielding property and reduction of the applicability of the aerial cable for laying in the jungle.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lay in jungle with three-layer fire-retardant insulating aerial [ insulated ] cable altogether, it is good to possess flame retardant properties, the advantage that corrosion resistance is good and shielding nature is good, it is single to have solved laying in the current jungle with aerial [ insulated ] cable structure, flame retardant properties is poor, easy burning when meetting high temperature or conflagration, cause stretching of intensity of a fire, corrosion resistance is poor, suffer the corruption easily under the factor of external environment, self life has been reduced, shielding property is poor simultaneously, the problem of laying in the jungle with aerial [ insulated ] cable suitability has been reduced.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a lay in jungle with fire-retardant insulating aerial [ insulated ] cable of three-layer coextrusion, includes the sinle silk, the outside cover of sinle silk is equipped with the semiconductive shielding layer of crosslinked type, the fixed cover in outside of the semiconductive shielding layer of crosslinked type is equipped with the copper wire around the covering, the copper wire is equipped with fire-retardant layer around the external fixation cover of covering, the fixed cover in outside on fire-retardant layer is equipped with the elastic layer, the fixed cover in outside of elastic layer is equipped with corrosion-resistant layer, fire-retardant layer includes the mica tape around the covering, the mica tape is equipped with the chlorohydrin rubber layer around the external fixation cover of covering, the elastic layer includes the polyphenyl ether resin layer, the external fixation cover on polyphenyl ether resin layer is equipped with unsaturated polyester resin layer.

Preferably, the corrosion-resistant layer comprises a fluororubber layer, a carbon fiber rubber layer is fixedly sleeved outside the fluororubber layer, the inner wall of the fluororubber layer is fixedly connected with the outer surface of the unsaturated polyester resin layer, the fluororubber layer is made of fluororubber, and the carbon fiber rubber layer is made of carbon fiber rubber.

Preferably, the inner wall of the polyphenyl ether resin layer is fixedly connected with the outer surface of the chlorohydrin rubber layer, and the inner wall of the mica tape wrapping layer is fixedly connected with the surface of the copper wire wrapping layer.

Preferably, the cross-linked semi-conductive shielding layer is made of a cross-linked semi-conductive shielding material, the copper wire wrapping layer is formed by wrapping a copper wire, the mica tape wrapping layer is formed by wrapping a mica tape, and the chlorohydrin rubber layer is made of chlorohydrin rubber.

Preferably, the polyphenylene ether resin layer is made of polyphenylene ether resin, and the unsaturated polyester resin layer is made of unsaturated polyester resin.

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

the utility model discloses a sinle silk, the semi-conductive shielding layer of crosslinked type, the copper wire is around the covering, fire-retardant layer, elastic layer and corrosion-resistant layer, it is good to possess fire behaviour, the advantage that corrosion resistance is good and shielding nature is good, it is single to have solved to lay in the current jungle and use the overhead cable structure, fire resistance is poor, easy burning when meetting high temperature or conflagration, cause stretching of intensity of a fire, corrosion resistance is poor, easily suffer the corruption under the factor of external environment, the life of self has been reduced, shielding property is poor simultaneously, the problem of laying in the jungle and using the overhead cable suitability has been reduced.

Drawings

FIG. 1 is a schematic view of the three-dimensional structure of the present invention;

FIG. 2 is a schematic three-dimensional cross-sectional view of the mica tape wrapping layer and the chlorohydrin rubber layer of the present invention;

FIG. 3 is a schematic perspective sectional view of a polyphenylene ether resin layer and an unsaturated polyester resin layer according to the present invention;

fig. 4 is a schematic three-dimensional sectional view of the fluororubber layer and the carbon fiber rubber layer according to the present invention.

In the figure: 1 sinle silk, 2 cross-linking type semiconductive shield layer, 3 copper wires are around covering, 4 fire-retardant layers, 5 elastic layers, 6 corrosion resistant layers, 7 mica tape are around covering, 8 chlorohydrin rubber layer, 9 polyphenyl ether resin layers, 10 unsaturated polyester resin layers, 11 fluororubber layer, 12 carbon fiber rubber layers.

Detailed Description

Please refer to fig. 1-4, a three-layer co-extrusion flame-retardant insulated overhead cable for laying in jungle comprises a cable core 1, an external cover of the cable core 1 is provided with a cross-linked semi-conductive shielding layer 2, an external fixing cover of the cross-linked semi-conductive shielding layer 2 is provided with a copper wire wrapping layer 3, the copper wire is provided with a flame-retardant layer 4 around the external fixing cover of the winding layer 3, the external fixing cover of the flame-retardant layer 4 is provided with an elastic layer 5, the external fixing cover of the elastic layer 5 is provided with a corrosion-resistant layer 6, the flame-retardant layer 4 comprises a mica tape wrapping layer 7, the mica tape is provided with a chlorohydrin rubber layer 8 around the external fixing cover of the winding layer 7, the elastic layer 5 comprises a polyphenylene oxide resin layer 9, and the external fixing cover of the polyphenylene oxide resin layer 9 is provided with an unsaturated polyester resin layer 10.

The corrosion-resistant layer 6 comprises a fluororubber layer 11, a carbon fiber rubber layer 12 is fixedly sleeved outside the fluororubber layer 11, the inner wall of the fluororubber layer 11 is fixedly connected with the outer surface of the unsaturated polyester resin layer 10, the fluororubber layer 11 is made of fluororubber, and the carbon fiber rubber layer 12 is made of carbon fiber rubber.

The inner wall of the polyphenyl ether resin layer 9 is fixedly connected with the outer surface of the chlorohydrin rubber layer 8, and the inner wall of the mica tape wrapping layer 7 is fixedly connected with the surface of the copper wire wrapping layer 3.

The material of crosslinking type semiconduction shielding layer 2 is crosslinking type semiconduction shielding material, and the copper wire is formed for the copper wire is lapped around covering 3, and the mica tape is formed for the mica tape is lapped around covering 7, and the material on chlorohydrin rubber layer 8 is chlorohydrin rubber.

The polyphenylene ether resin layer 9 is made of polyphenylene ether resin, and the unsaturated polyester resin layer 10 is made of unsaturated polyester resin.

The chlorohydrin rubber has good oil resistance, and under the influence of temperature change, the chlorohydrin rubber has a dissolution parameter of 9.15 and 9.05 of copolymerization in the temperature range of-50 ℃ to-150 ℃, has high heat resistance in mineral oil, has a pyrolysis temperature of 180 ℃ under an anaerobic condition, a temperature close to 180 ℃ under an aerobic condition, an upper limit temperature for continuous use in hot air of 1000 hours, 150 ℃ of homopolymerization rubber, 135 ℃ of copolymerization rubber and chlorohydrin rubber.

The polyphenylene oxide resin has the biggest characteristics of excellent dimensional stability and outstanding electric insulation property under long-term load, wide use temperature range, long-term use within the range of-127-121 ℃, excellent water resistance and steam resistance, higher tensile strength and impact strength of products, good creep resistance, better wear resistance and electrical property.

The unsaturated polyester resin has excellent technological properties, can be cured at room temperature and molded under normal pressure, has flexible technological properties, good comprehensive properties after curing, mechanical properties superior to those of phenolic resin, and higher tensile, bending and compressive strengths.

The fluororubber has excellent high-temperature resistance, excellent aging resistance and excellent ozone resistance.

The carbon fiber rubber has excellent aging resistance, water stain resistance and corrosion resistance.

During the use, through cross-linking type semi-conductive shielding layer 2 and copper wire around covering 3, the shielding property of overhead cable has been improved, can prevent outside electromagnetic interference, through setting up mica tape around covering 7 and chlorohydrin rubber layer 8, the fire resistance of overhead cable has been improved, difficult burning when making the cable meet with the conflagration, avoid stretching of intensity of a fire, through setting up polyphenyl ether resin layer 9 and unsaturated polyester resin layer 10, can carry out elastic support to corrosion resistant layer 6, the buffer of overhead cable has been improved, the waterproof nature of cable has been improved simultaneously, through setting up fluororubber layer 11 and carbon fiber rubber layer 12, the corrosion resisting property of cable has been improved, the service life of cable has been prolonged.

In summary, the following steps: this lay with fire-retardant insulating aerial [ insulated ] cable of three-layer coextrusion in jungle, through sinle silk 1, cross-linking type semiconduction shielding layer 2, the copper wire is around covering 3, fire-retardant layer 4, elastic layer 5 and corrosion resistant layer 6, it is single to have solved to lay in the current jungle, flame retardant property is poor, easy burning when meetting high temperature or conflagration, cause stretching of intensity of a fire, corrosion resistant property is poor, easily suffer the corruption under the factor of external environment, the life of self has been reduced, shielding property is poor simultaneously, the problem of laying in the jungle with aerial [ insulated ] cable suitability has been reduced.

Claims

1. The utility model provides a lay in jungle with fire-retardant insulating aerial [ insulated ] cable of three-layer coextrusion, includes sinle silk (1), its characterized in that: the outside cover of sinle silk (1) is equipped with crosslinked type semiconduction shielding layer (2), the external fixation cover of crosslinked type semiconduction shielding layer (2) is equipped with the copper wire around covering (3), the copper wire is equipped with fire-retardant layer (4) around the external fixation cover of covering (3), the external fixation cover of fire-retardant layer (4) is equipped with elastic layer (5), the external fixation cover of elastic layer (5) is equipped with corrosion-resistant layer (6), fire-retardant layer (4) include the mica area around covering (7), the mica area is equipped with chlorohydrin rubber layer (8) around the external fixation cover of covering (7), elastic layer (5) include polyphenyl ether resin layer (9), the external fixation cover of polyphenyl ether resin layer (9) is equipped with unsaturated polyester resin layer (10).

2. The three-layer co-extruded flame-retardant insulated overhead cable for laying in a jungle according to claim 1, which is characterized in that: the corrosion-resistant layer (6) comprises a fluororubber layer (11), a carbon fiber rubber layer (12) is fixedly sleeved outside the fluororubber layer (11), the inner wall of the fluororubber layer (11) is fixedly connected with the outer surface of an unsaturated polyester resin layer (10), the fluororubber layer (11) is made of fluororubber, and the carbon fiber rubber layer (12) is made of carbon fiber rubber.

3. The three-layer co-extruded flame-retardant insulated overhead cable for laying in a jungle according to claim 1, which is characterized in that: the inner wall of the polyphenyl ether resin layer (9) is fixedly connected with the outer surface of the chlorohydrin rubber layer (8), and the inner wall of the mica tape wrapping layer (7) is fixedly connected with the surface of the copper wire wrapping layer (3).

4. The three-layer co-extruded flame-retardant insulated overhead cable for laying in a jungle according to claim 1, which is characterized in that: the material of crosslinking type semiconduction shielding layer (2) is crosslinking type semiconduction shielding material, the copper wire is formed for the copper wire around package in covering (3), the mica tape is formed for the mica tape around package in covering (7), the material of chlorohydrin rubber layer (8) is chlorohydrin rubber.

5. The three-layer co-extruded flame-retardant insulated overhead cable for laying in a jungle according to claim 1, which is characterized in that: the polyphenyl ether resin layer (9) is made of polyphenyl ether resin, and the unsaturated polyester resin layer (10) is made of unsaturated polyester resin.