CN211879043U - Polyvinyl chloride insulated cable - Google Patents
Polyvinyl chloride insulated cable Download PDFInfo
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- CN211879043U CN211879043U CN202020768324.0U CN202020768324U CN211879043U CN 211879043 U CN211879043 U CN 211879043U CN 202020768324 U CN202020768324 U CN 202020768324U CN 211879043 U CN211879043 U CN 211879043U
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- polyvinyl chloride
- insulated cable
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Abstract
The utility model discloses a polyvinyl chloride insulated cable, concretely relates to cable technical field, including the conducting layer, the conducting layer includes conductive core, conductive core adopts conductive metal line to make, comprises seven conductive metal line winding, conductive core outside parcel has the internal insulation, be provided with filler material between the internal insulation, the outside parcel of conducting layer has the isolation layer, the isolation layer outside is provided with fire-retardant layer, fire-retardant layer outer wall is the cockscomb structure, fire-retardant layer outside parcel has the regulating layer, the regulating layer inner wall is cockscomb structure and fire-retardant layer outer wall cross connection, the outside parcel of regulating layer has the back up coat, the outside parcel of back up coat has the protection film, the outside parcel of protection film has the external insulation layer, the outside parcel of external insulation has the dope layer. The utility model discloses have the effect that improves cable adaptation difference in temperature variable ability, improvement cable sectional area rate of utilization.
Description
Technical Field
The utility model relates to the technical field of cables, concretely relates to polyvinyl chloride insulated cable.
Background
The cable is made of one or more mutually insulated conductors and an outer insulating protective layer, and is a conducting wire for transmitting power or information from one place to another place, and the cable comprises a power cable, a control cable, a compensation cable, a shielding cable, a high-temperature cable, a computer cable, a signal cable, a coaxial cable, a fire-resistant cable, a marine cable, a mining cable, an aluminum alloy cable and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like.
In the prior art, because the inside of the cable is made of a metal material, the outside of the cable is made of a rubber material, and the expansion coefficient of the rubber material is larger than that of metal, the contraction speed of the rubber material is higher than that of the metal material when the cable is used for alternating cold and hot days, so that the rubber material is easy to crack, and potential safety hazards are generated. Meanwhile, the inside of the existing cable is mostly double lines and three lines, and the utilization rate of the sectional area of the cable is low.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned defects of the prior art, the embodiments of the present invention provide a polyvinyl chloride insulated cable.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a polyvinyl chloride insulated cable, includes the conducting layer, the conducting layer includes conductive core, conductive core adopts conductive metal line to make, comprises seven conductive metal line winding, conductive core outside parcel has the internal insulation layer, be provided with filler material between the internal insulation layer, conductive core and internal insulation layer are seven total to constitute the conducting layer, the outside parcel of conducting layer has the isolation layer, the isolation layer outside is provided with fire-retardant layer, fire-retardant layer outer wall is the cockscomb structure, fire-retardant layer outside parcel has the regulating layer, the regulating layer inner wall is cockscomb structure and fire-retardant layer outer wall cross connection, the outside parcel of regulating layer has the back up coat, the outside parcel of back up coat has the protection film, the outside parcel of protection film has the external insulation layer, the outside parcel of external insulation layer has the dope layer.
In a preferred embodiment, the conductive core is made of oxygen-free copper wire, wherein the oxygen content is less than 0.003%, the total impurity content is less than 0.05%, and the purity of copper is higher than 99.95%.
In a preferred embodiment, the inner and outer insulating layers are made of polyvinyl chloride material.
In a preferred embodiment, the filler material is made of a low density polyethylene material.
In a preferred embodiment, the isolation layer is made of a polypropylene resin material.
In a preferred embodiment, the flame-retardant layer is provided with loose pores and is made of ceramic low-smoke halogen-free polyolefin refractory.
In a preferred embodiment, the protective film is made of polyethylene or polyvinyl chloride film and has a thickness of 0.05mm to 0.08 mm.
In a preferred embodiment, the coating layer is made of a tertiary propyl emulsion and nano materials such as graphene and carbon tubes.
The utility model discloses a technological effect and advantage:
1. the utility model provides a polyvinyl chloride insulated cable, including electrically conductive core through setting up "conducting layer, electrically conductive core adopts electrically conductive metal wire to make, comprises seven electrically conductive metal wire winding, and electrically conductive core outside parcel has the internal insulation layer, is provided with filler material between the internal insulation layer, and electrically conductive core and internal insulation layer are seven totally and constitute the conducting layer for can make full use of circle inner space for double-wire or three-wire cable, improve cable effective utilization, save the cost.
2. The utility model discloses a set up "the isolation layer outside is provided with fire-retardant layer, fire-retardant layer outer wall is the cockscomb structure, fire-retardant layer outside parcel has the regulating layer, the regulating layer inner wall is cockscomb structure and fire-retardant layer outer wall cross connection, make at the temperature variation, for example when the temperature uprises, the regulating layer is compared fire-retardant layer inflation bigger, the space increase between regulating layer and the fire-retardant layer, during the temperature step-down, the regulating layer reduces more than fire-retardant layer, the space between regulating layer and the fire-retardant layer diminishes still leaves the space surplus, it is concentric to keep the two throughout, the adaptability of improvement cable to the difference in temperature change has been played, the life-span.
3. The utility model discloses a set up "the electrically conductive core adopts the oxygen-free copper line to make, wherein the content of oxygen is less than 0.003%, the impurity total content is less than 0.05%, the purity of copper is higher than 99.95%, inner insulating layer and outer insulating layer adopt the polyvinyl chloride material to make, filling material adopts the low density polyethylene material to make, the isolation layer adopts the polypropylene resin material to make, be provided with loose aperture on the fire-retardant layer, fire-retardant layer is made by pottery low smoke and zero halogen polyolefin refractory material, the protection film adopts polyethylene or polyvinyl chloride membrane to make, thickness is 0.05mm to 0.08mm, the dope layer adopts tertiary propyl emulsion to add nano-material such as graphite alkene and carbon pipe and makes, make the electric conductive property of comprehensive improvement cable through selecting suitable material, insulating properties, high temperature resistance and extension cable's life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a three-dimensional schematic view of the conductive core structure of the present invention.
Fig. 3 is the structure diagram of the flame retardant layer and the adjusting layer of the present invention.
The reference signs are: 1. a conductive layer; 2. an isolation layer; 3. a flame retardant layer; 4. a conditioning layer; 5. a reinforcement layer; 6. a protective film; 7. an outer insulating layer; 8. a coating layer; 11. a conductive core; 12. an inner insulating layer; 13. and (4) filling materials.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
According to the polyvinyl chloride insulated cable shown in fig. 1-3, which comprises a conductive layer 1, the conductive layer 1 comprises a conductive core 11, the conductive core 11 is made of conductive metal wires and is formed by winding seven conductive metal wires, an inner insulating layer 12 is wrapped outside the conductive core 11, a filling material 13 is arranged between the inner insulating layer 12, the conductive core 11 and the inner insulating layer 12 are wound into seven groups to form the conductive layer 1, an isolating layer 2 is wrapped outside the conductive layer 1, a flame-retardant layer 3 is arranged outside the isolating layer 2, the outer wall of the flame-retardant layer 3 is in a sawtooth shape, an adjusting layer 4 is wrapped outside the flame-retardant layer 3, the inner wall of the adjusting layer 4 is in a sawtooth shape and is connected with the outer wall of the flame-retardant layer 3 in a staggered manner, the sawtooth-shaped connection between the flame-retardant layer 3 and the adjusting layer 4 enables the adjusting layer 4 to expand more than the flame-retardant layer 3, when the temperature becomes low, the adjusting layer 4 is more reduced than the flame-retardant layer 3, the gap between the adjusting layer 4 and the flame-retardant layer 3 is reduced but the gap allowance is still left, the adjusting layer and the flame-retardant layer are always concentric, the adaptability of the cable to temperature difference change is improved, the service life of the cable is prolonged, the reinforcing layer 5 wraps the adjusting layer 4, the protective film 6 wraps the reinforcing layer 5, the outer insulating layer 7 wraps the protective film 6, and the coating layer 8 wraps the outer insulating layer 7; adopt seven electrically conductive metal wires and seven electrically conductive cores 11 and inner insulating layer 12 can make full use of circle inner space, improve cable effective utilization, it makes at temperature variation to connect through the cockscomb structure between fire-retardant layer 3 and the regulating layer 4, for example, when the temperature risees, regulating layer 4 is compared fire-retardant layer 3 inflation bigger, the space increase between regulating layer 4 and the fire-retardant layer 3, when the temperature step-down, regulating layer 4 reduces more than fire-retardant layer 3, the space between regulating layer 4 and the fire-retardant layer 3 diminishes and still leaves the space surplus, keep the two concentric all the time, the adaptability of improvement cable to the temperature difference change has been played, the life-span of cable has been prolonged.
According to the polyvinyl chloride insulated cable shown in fig. 1, the conductive core 11 is made of an oxygen-free copper wire, wherein the oxygen content is lower than 0.003%, the total impurity content is lower than 0.05%, and the purity of copper is higher than 99.95%, the oxygen-free copper overcomes the defects of low yield strength and creep resistance at high temperature after annealing in the production process, has the characteristics of high temperature resistance, high strength and high thermal conductivity, and improves the performance of the cable; the inner insulating layer 12 and the outer insulating layer 7 are made of polyvinyl chloride materials, and the polyvinyl chloride has stable physical and chemical properties, is insoluble in water, alcohol and gasoline, has low gas and water vapor leakage, and simultaneously has good mechanical strength, weather resistance and flame resistance; the filling material 13 is made of low-density polyethylene material, and the low-density polyethylene has good flexibility, extensibility, electrical insulation, transparency, easy processability and certain air permeability; the isolation layer 2 is made of polypropylene resin material, the polypropylene is thermoplastic synthetic resin with excellent performance, is colorless semitransparent thermoplastic light general plastic, and has chemical resistance, heat resistance, electrical insulation, high-strength mechanical property, good high-wear-resistance processing property and the like; the flame-retardant layer 3 is provided with loose pores, the flame-retardant layer 3 is made of ceramic low-smoke halogen-free polyolefin refractory material, the ceramic low-smoke halogen-free polyolefin refractory material is formed by mixing, plasticizing and granulating polyolefin resin serving as base material and high-efficiency ceramic forming filler and other functional auxiliaries, and is transformed into a hard ceramic protective layer through vitrification after catching fire at high temperature, and the ceramic low-smoke halogen-free polyolefin refractory material has certain mechanical strength and ensures the normal operation of electric wires and cables. The protective film 6 is made of polyethylene or polyvinyl chloride film, the thickness is 0.05mm to 0.08mm, the polyethylene or polyvinyl chloride film adheres to an article by means of self electrostatic adsorption to play a role in protection, when one object with static electricity is close to another object without static electricity, due to electrostatic induction, one side of the object without static electricity, which is close to the object with static electricity, can gather charges with the opposite polarity to the charges carried by the charged object (the other side generates the same number of charges with the same polarity), and due to the attraction of charges with different polarities, the electrostatic adsorption phenomenon can be shown; the coating layer 8 is made of tert-propyl emulsion and nano materials such as graphene and carbon tubes, and has the functions of fire prevention and heat dissipation, the performance of the cable is improved, and the service life is prolonged.
The utility model discloses the theory of operation:
the utility model provides a conducting layer 1 adopts seven electrically conductive metal wires and seven electrically conductive cores 11 and internal insulation layer 12 can make full use of circle inner space, improve cable effective utilization, it makes at temperature variation to connect through the cockscomb structure between fire-retardant layer 3 and the adjustment layer 4, for example, when the temperature uprises, adjustment layer 4 compares 3 expansions on fire-retardant layer bigger, adjustment layer 4 and the space increase between fire-retardant layer 3, when the temperature step-down, adjustment layer 4 reduces more than fire-retardant layer 3, the space between adjustment layer 4 and the fire-retardant layer 3 diminishes but still leaves the space surplus, it is concentric to keep the two all the time, improved cable to the adaptability of difference in temperature change has been played, the life-span of cable has been prolonged. The conductive core 11 is made of an oxygen-free copper wire, wherein the oxygen content is lower than 0.003%, the total impurity content is lower than 0.05%, the purity of copper is higher than 99.95%, the oxygen-free copper overcomes the defects of lower yield strength and creep resistance at high temperature after annealing in the production process, and has the characteristics of high temperature resistance, high strength and high thermal conductivity, and the performance of the cable is improved; the inner insulating layer 12 and the outer insulating layer 7 are made of polyvinyl chloride materials, and the polyvinyl chloride has stable physical and chemical properties, is insoluble in water, alcohol and gasoline, has low gas and water vapor leakage, and simultaneously has good mechanical strength, weather resistance and flame resistance; the filling material 13 is made of low-density polyethylene material, and the low-density polyethylene has good flexibility, extensibility, electrical insulation, transparency, easy processability and certain air permeability; the isolation layer 2 is made of polypropylene resin material, the polypropylene is thermoplastic synthetic resin with excellent performance, is colorless semitransparent thermoplastic light general plastic, and has chemical resistance, heat resistance, electrical insulation, high-strength mechanical property, good high-wear-resistance processing property and the like; the flame-retardant layer 3 is provided with loose pores, the flame-retardant layer 3 is made of ceramic low-smoke halogen-free polyolefin refractory material, the ceramic low-smoke halogen-free polyolefin refractory material is formed by mixing, plasticizing and granulating polyolefin resin serving as base material and high-efficiency ceramic forming filler and other functional auxiliaries, and is transformed into a hard ceramic protective layer through vitrification after catching fire at high temperature, and the ceramic low-smoke halogen-free polyolefin refractory material has certain mechanical strength and ensures the normal operation of electric wires and cables. The protective film 6 is made of polyethylene or polyvinyl chloride film, the polyethylene or polyvinyl chloride film with the thickness of 0.05mm to 0.08mm is adhered to an object by self electrostatic adsorption to play a role in protection, when one object with static electricity is close to another object without static electricity, due to electrostatic induction, the side, close to the object with static electricity, in the object without static electricity can gather charges with the opposite polarity to the charges carried by the object with static electricity (the other side generates the same number of charges with the same polarity), and due to the mutual attraction of charges with opposite polarities, the electrostatic adsorption phenomenon can be shown; the coating layer 8 is made of tert-propyl emulsion and nano materials such as graphene and carbon tubes, and has the functions of fire prevention and heat dissipation, the performance of the cable is improved, and the service life is prolonged.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (8)
1. A polyvinyl chloride insulated cable is characterized in that: comprises a conductive layer (1), the conductive layer (1) comprises a conductive core (11), the conductive core (11) is made of conductive metal wires and is formed by winding seven conductive metal wires, an inner insulating layer (12) is wrapped outside the conductive core (11), a filling material (13) is arranged between the inner insulating layers (12), the conductive core (11) and the inner insulating layer (12) form the conductive layer (1) by seven, an isolating layer (2) is wrapped outside the conductive layer (1), a flame-retardant layer (3) is arranged outside the isolating layer (2), the outer wall of the flame-retardant layer (3) is in a saw-toothed shape, an adjusting layer (4) is wrapped outside the flame-retardant layer (3), the inner wall of the adjusting layer (4) is in a saw-toothed shape and is connected with the outer wall of the flame-retardant layer (3) in a staggered manner, a reinforcing layer (5) is wrapped outside the adjusting layer (4), and a protective film (6) is wrapped, the protective film (6) is wrapped by an outer insulating layer (7), and the outer insulating layer (7) is wrapped by a coating layer (8).
2. A polyvinyl chloride insulated cable according to claim 1, characterized in that: the conductive core (11) is made of oxygen-free copper wire, wherein the content of oxygen is lower than 0.003%, the total content of impurities is lower than 0.05%, and the purity of copper is higher than 99.95%.
3. A polyvinyl chloride insulated cable according to claim 1, characterized in that: the inner insulating layer (12) and the outer insulating layer (7) are made of polyvinyl chloride materials.
4. A polyvinyl chloride insulated cable according to claim 1, characterized in that: the filling material (13) is made of low-density polyethylene material.
5. A polyvinyl chloride insulated cable according to claim 1, characterized in that: the isolation layer (2) is made of polypropylene resin materials.
6. A polyvinyl chloride insulated cable according to claim 1, characterized in that: the flame-retardant layer (3) is provided with loose small holes, and the flame-retardant layer (3) is made of ceramic low-smoke halogen-free polyolefin refractory material.
7. A polyvinyl chloride insulated cable according to claim 1, characterized in that: the protective film (6) is made of polyethylene or polyvinyl chloride film, and the thickness is 0.05mm to 0.08 mm.
8. A polyvinyl chloride insulated cable according to claim 1, characterized in that: the coating layer (8) is prepared by adding nano materials such as graphene, carbon tubes and the like into tertiary acrylic emulsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020768324.0U CN211879043U (en) | 2020-05-11 | 2020-05-11 | Polyvinyl chloride insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020768324.0U CN211879043U (en) | 2020-05-11 | 2020-05-11 | Polyvinyl chloride insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211879043U true CN211879043U (en) | 2020-11-06 |
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ID=73234076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020768324.0U Expired - Fee Related CN211879043U (en) | 2020-05-11 | 2020-05-11 | Polyvinyl chloride insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211879043U (en) |
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2020
- 2020-05-11 CN CN202020768324.0U patent/CN211879043U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201106 Termination date: 20210511 |