CN105655044A - Power cable - Google Patents

Power cable Download PDF

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Publication number
CN105655044A
CN105655044A CN201610205839.8A CN201610205839A CN105655044A CN 105655044 A CN105655044 A CN 105655044A CN 201610205839 A CN201610205839 A CN 201610205839A CN 105655044 A CN105655044 A CN 105655044A
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CN
China
Prior art keywords
parts
restrictive coating
font
parting bead
cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610205839.8A
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Chinese (zh)
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CN105655044B (en
Inventor
沈群华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi Yongguang Electric Power Cable Manufacturing Co Ltd
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Individual
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Publication date
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Priority to CN201610205839.8A priority Critical patent/CN105655044B/en
Priority claimed from CN201410427639.8A external-priority patent/CN104361938B/en
Publication of CN105655044A publication Critical patent/CN105655044A/en
Application granted granted Critical
Publication of CN105655044B publication Critical patent/CN105655044B/en
Expired - Fee Related legal-status Critical Current
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/006—Constructional features relating to the conductors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/36—Insulated conductors or cables characterised by their form with distinguishing or length marks
    • H01B7/365—Insulated conductors or cables characterised by their form with distinguishing or length marks being indicia imposed on the insulation or conductor
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/066—LDPE (radical process)

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Insulated Conductors (AREA)
  • Manufacturing Of Electric Cables (AREA)

Abstract

The invention belongs to the technical field of electric power and cables and particularly relates to a power cable. The power cable comprises a jacket layer and a plurality of conductive units, and is characterized in that any two adjacent conductive units are spaced by a spacing bar; on any cross section of the cable, the shape formed after all the spacing bars are connected is like K, M, N or W, and any spacing bar is in a segment shape; the spacing bars and the jacket layer are integrally formed; the jacket layer is made of low-density polyethylene, medium-density polyethylene, high-density polyethylene, flame-retardant polyethylene, low-smoke zero-halogen polyethylene, polyvinyl chloride, polytetrafluoroethylene or nylon, or adopts a special formula. The power cable has the following main benefits: the structure is simple, the power cable is easy to manufacture, maintain, lay and process, the carrying capacity is higher, and the jacket layer has better performance.

Description

A kind of electric power cable
The application is that name is called: a kind of electric power cable and making method thereof, the applying date are: on 08 27th, 2014, application number be: point case application of the patent of invention of 201510049835.0; Application number is: the patent of invention of 201510049835.0 is that name is called: a kind of novel texture cable and making method thereof, the applying date are: on 08 27th, 2014, application number be: point case application of the patent of invention of 201410427639.8.
Technical field
The invention belongs to electric power and technical field of cables, especially relate to a kind of electric power cable and making method thereof.
Background technology
Electric wire is as key pillars of the national economy industry, and its ratio shared in national economy increases day by day. Comparing ripe industry as one, the joint Zhi Jiangben of electric wire is also more and more paid attention in industry, and the construction of cable is more in polarization, and one-level height is integrated complicated, multiple function is integrated, and saving is laid, running maintenance cost; Another level for simplifying the structure, when meeting industry standard, national standard, company standard, structure as far as possible simple, cost is as far as possible low, this kind of mode meets what the requirement of low carbocyclic ring. For this reason, the domestic structure for cable has carried out big quantifier elimination, and such as: to be CN103123824A, patent name be publication No.: a kind of cable with simple structure and manufacture method thereof, it is made up of many conductors, the restrictive coating that enveloped by conductor; It is characterized in that, between the two of arbitrary neighborhood piece conductor, there is restrictive coating material; On the cross section of cable, the edge of any conductor is all positioned within the border of restrictive coating; Described many conductors are along restrictive coating distribution, and do not contact between any two conductors; It is by offering cylindrical or the hole of fan cylinder shape in restrictive coating, conductor is inserted in hole and to form cable, this kind of mode reaches the object of simple structure really, but, irregular for the shape of restrictive coating between adjacent conductor, this kind of mode does not reasonably utilize space, and handiness mode can not meet requirement.
Summary of the invention
In order to solve the problem, it is an object of the invention to disclose a kind of electric power cable and making method thereof, they realize by the following technical solutions.
A kind of electric power cable, it includes restrictive coating 1, many conductive units 12, it is characterized in that any two conductive units are all separated by parting bead 11, on arbitrary cross section of cable, the shape that all parting beads are formed by connecting is A font or H font or K font or M font or N font or V-shaped or W font or X font or Y font, and arbitrary parting bead is all line segment shape, parting bead is formed together with restrictive coating being, the material of restrictive coating is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or tetrafluoroethylene or nylon or by weight, the material of described restrictive coating is made up of following raw material: polyethylene: 50��70 parts, ethylene vinyl acetate copolymer: 6��10 parts, magnesium hydroxide: 10��16 parts, model is the coupling agent of TMC-38S: 1��3 part, antioxidant 1010: 1��3 part, titanium dioxide or carbon black: 2.5��5.5 parts, paraffin: 3��5 parts, dibutyl phthalate: 5��10 parts, polyvinyl alcohol: 5��10 parts, tributyl phosphate: 3��5 parts, silicone oil: 3��5 parts.
A kind of electric power cable described above, it is characterised in that described conductive unit is the conductor bundle closed of many conductor skein silks or is made up of stranded conductor bundle 121, the insulation layer 122 that is coated on outside stranded conductor bundle.
A kind of electric power cable described above, it is characterised in that when the shape that described parting bead is formed by connecting is M font or N font or V-shaped or W font or during X font, the two ends of every root parting bead are all connected on restrictive coating.
A kind of electric power cable described above, it is characterized in that when the shape that described parting bead is formed by connecting is H font or K font or M font or N font or V-shaped or W font or X font or during Y font, on arbitrary cross section of cable, the outer edge of every root conductive unit all has a circular shape, and the outer edge of the circular arc of all conductive units centered by the center of circle of restrictive coating circumferentially.
The making method of a kind of electric power cable, it is characterised in that comprise the step that next coming in order carry out and gather:
The first step: the step making conductive unit: getting many conductor skein silks and close formation conductive unit, the cross section of conductive unit is two arch, a sector; Or getting many conductor skein silks to close and become stranded conductor bundle, form conductive unit at the outer extrusion molding coated insulation layer of stranded conductor bundle, the cross section of conductive unit is two arch, a sector;
2nd step: the step being extruded into cable: sheath material is inserted electric wire extruding machine and makes it reach and extrude requirement, by the conductive unit of gained in the first step through in the mould of extrusion head, unlatching extruding machine makes sheath material enter and forms parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in cooling trough and outside being coated on conductive unit, forms power cable; Wherein, on arbitrary cross section of described cable, the shape that all parting beads are formed by connecting is V-shaped, and arbitrary parting bead is all line segment shape; The two ends of every root parting bead are all connected on restrictive coating; On arbitrary cross section of cable, the outer edge of every root conductive unit all has a circular shape, and the outer edge of the circular arc of all conductive units centered by the center of circle of restrictive coating circumferentially.
The making method of a kind of electric power cable, it is characterised in that comprise the step that next coming in order carry out and gather:
The first step: the step making conductive unit: getting many conductor skein silks and close formation conductive unit, the cross section of conductive unit is two sectors, two arch; Or getting many conductor skein silks to close and become stranded conductor bundle, form conductive unit at the outer extrusion molding coated insulation layer of stranded conductor bundle, the cross section of conductive unit is two sectors, two arch;
2nd step: the step being extruded into cable: sheath material is inserted electric wire extruding machine and makes it reach and extrude requirement, by the conductive unit of gained in the first step through in the mould of extrusion head, unlatching extruding machine makes sheath material enter and forms parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in cooling trough and outside being coated on conductive unit, forms power cable; Wherein, on arbitrary cross section of described cable, the shape that all parting beads are formed by connecting is N font, and arbitrary parting bead is all line segment shape; The two ends of every root parting bead are all connected on restrictive coating; On arbitrary cross section of cable, the outer edge of every root conductive unit all has a circular shape, and the outer edge of the circular arc of all conductive units centered by the center of circle of restrictive coating circumferentially.
The making method of a kind of electric power cable, it is characterised in that comprise the step that next coming in order carry out and gather:
The first step: the step making conductive unit: getting many conductor skein silks and close formation conductive unit, the cross section of conductive unit is three sectors, an arch; Or getting many conductor skein silks to close and become stranded conductor bundle, form conductive unit at the outer extrusion molding coated insulation layer of stranded conductor bundle, the cross section of conductive unit is three sectors, an arch;
2nd step: the step being extruded into cable: sheath material is inserted electric wire extruding machine and makes it reach and extrude requirement, by the conductive unit of gained in the first step through in the mould of extrusion head, unlatching extruding machine makes sheath material enter and forms parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in cooling trough and outside being coated on conductive unit, forms power cable; Wherein, on arbitrary cross section of described cable, the shape that all parting beads are formed by connecting is K font, and arbitrary parting bead is all line segment shape; The two ends of every root parting bead are all connected on restrictive coating; On arbitrary cross section of cable, the outer edge of every root conductive unit all has a circular shape, and the outer edge of the circular arc of all conductive units centered by the center of circle of restrictive coating circumferentially.
The making method of a kind of electric power cable, it is characterised in that comprise the step that next coming in order carry out and gather:
The first step: the step making conductive unit: getting many conductor skein silks and close formation conductive unit, the cross section of conductive unit is three sectors, two arch; Or getting many conductor skein silks to close and become stranded conductor bundle, form conductive unit at the outer extrusion molding coated insulation layer of stranded conductor bundle, the cross section of conductive unit is three sectors, two arch;
2nd step: the step being extruded into cable: sheath material is inserted electric wire extruding machine and makes it reach and extrude requirement, by the conductive unit of gained in the first step through in the mould of extrusion head, unlatching extruding machine makes sheath material enter and forms parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in cooling trough and outside being coated on conductive unit, forms power cable; Wherein, on arbitrary cross section of described cable, the shape that all parting beads are formed by connecting is W font or M font, and arbitrary parting bead is all line segment shape; The two ends of every root parting bead are all connected on restrictive coating; On arbitrary cross section of cable, the outer edge of every root conductive unit all has a circular shape, and the outer edge of the circular arc of all conductive units centered by the center of circle of restrictive coating circumferentially.
In the present invention, the shape that parting bead is formed by connecting is special alphabetical shape, very it is convenient to produce, and the shape of conductive unit is no longer single sector, therefore the area of parting bead is less, therefore, the space of cable can be made to be utilised more efficiently, during namely same cross-sectional area, it is possible to carry the higher magnitude of current.
In the present invention, except the shape being formed by connecting except parting bead is A font, in other enforcement mode, restrictive coating can be made identification sign, such as groove, convex bar, print word etc., all strippings can be reached not and open cable, and reach the object identifying and taking out conductive unit, therefore, it is easier to construction.
Therefore, power cable of the present invention has following main useful effect: structure simply, easily make, be easy to safeguard with deposited work, current capacity higher.
Accompanying drawing explanation
Fig. 1 is the perspective view that after the invention process example 1 intercepts a section, solution is cut open.
Fig. 2 is the cross-sectional structure schematic diagram after Fig. 1 amplifies.
Fig. 3 is the perspective view that after the invention process example 2 intercepts a section, solution is cut open.
Fig. 4 is the perspective view that after the invention process example 3 intercepts a section, solution is cut open.
Fig. 5 is the cross-sectional structure schematic diagram after Fig. 4 amplifies.
Fig. 6 is the perspective view that after the invention process example 4 intercepts a section, solution is cut open.
Fig. 7 is the perspective view that after the invention process example 5 intercepts a section, solution is cut open.
Fig. 8 is the cross-sectional structure schematic diagram after Fig. 7 amplifies.
Fig. 9 is the perspective view that after the invention process example 6 intercepts a section, solution is cut open.
Figure 10 is the cross-sectional structure schematic diagram after the invention process example 7 removes conductive unit.
Figure 11 is the cross-sectional structure schematic diagram after the invention process example 8 removes conductive unit.
Figure 12 is the cross-sectional structure schematic diagram after the invention process example 9 removes conductive unit.
Figure 13 is the cross-sectional structure schematic diagram after the invention process example 10 removes conductive unit.
Figure 14 is the cross-sectional structure schematic diagram after the invention process example 11 removes conductive unit.
Embodiment
Embodiment 1
Asking for an interview Fig. 1 and Fig. 2, a kind of electric power cable, it includes restrictive coating 1,3 conductive units 12; It is characterized in that any two conductive units are all separated by parting bead 11; On arbitrary cross section of cable, the shape that all parting beads are formed by connecting is V-shaped, and arbitrary parting bead is all line segment shape; Parting bead is formed together with restrictive coating being; The material of restrictive coating is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or tetrafluoroethylene or nylon; Wherein, there are two arch, a sector in the cross section of conductive unit.
The making method of a kind of electric power cable, it is characterised in that comprise the step that next coming in order carry out and gather:
The first step: the step making conductive unit: getting many conductor skein silks and close formation conductive unit, the cross section of conductive unit is two arch, a sector; Or getting many conductor skein silks to close and become stranded conductor bundle, form conductive unit at the outer extrusion molding coated insulation layer of stranded conductor bundle, the cross section of conductive unit is two arch, a sector;
2nd step: the step being extruded into cable: sheath material is inserted electric wire extruding machine and makes it reach and extrude requirement, by the conductive unit of gained in the first step through in the mould of extrusion head, unlatching extruding machine makes sheath material enter and forms parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in cooling trough and outside being coated on conductive unit, forms power cable; Wherein, on arbitrary cross section of described cable, the shape that all parting beads are formed by connecting is V-shaped, and arbitrary parting bead is all line segment shape; The two ends of every root parting bead are all connected on restrictive coating; On arbitrary cross section of cable, the outer edge of every root conductive unit all has a circular shape, and the outer edge of the circular arc of all conductive units centered by the center of circle of restrictive coating circumferentially.
Embodiment 2
Ask for an interview Fig. 3, and with reference to figure 1 and Fig. 2, a kind of electric power cable, substantially with embodiment 1, difference is: described conductive unit is the conductor bundle closed of many conductor skein silks or is made up of stranded conductor bundle 121, the insulation layer 122 that is coated on outside stranded conductor bundle.
Embodiment 3
Asking for an interview Fig. 4 and Fig. 5, a kind of electric power cable, it includes restrictive coating 1,3 conductive units 12; It is characterized in that any two conductive units are all separated by parting bead 11; On arbitrary cross section of cable, the shape that all parting beads are formed by connecting is Y font, and arbitrary parting bead is all line segment shape; Parting bead is formed together with restrictive coating being; The material of restrictive coating is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or tetrafluoroethylene or nylon; Wherein, the cross section of conductive unit is three sectors.
Embodiment 4
Ask for an interview Fig. 6, and with reference to figure 4 and Fig. 5, a kind of electric power cable, substantially with embodiment 3, difference is: described conductive unit is the conductor bundle closed of many conductor skein silks or is made up of stranded conductor bundle 121, the insulation layer 122 that is coated on outside stranded conductor bundle.
Embodiment 5
Asking for an interview Fig. 7 and Fig. 8, a kind of electric power cable, it includes restrictive coating 1,4 conductive units 12; It is characterized in that any two conductive units are all separated by parting bead 11; On arbitrary cross section of cable, the shape that all parting beads are formed by connecting is H font, and arbitrary parting bead is all line segment shape; Parting bead is formed together with restrictive coating being; The material of restrictive coating is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or tetrafluoroethylene or nylon; Wherein, the cross section of conductive unit there are two be two arch, two similar right-angled trapezium, but directly trapezoidal hypotenuse is circular shape, and circular arc is near restrictive coating.
Embodiment 6
Ask for an interview Fig. 9, and with reference to figure 7 and Fig. 8, a kind of electric power cable, substantially with embodiment 5, difference is: described conductive unit is the conductor bundle closed of many conductor skein silks or is made up of stranded conductor bundle 121, the insulation layer 122 that is coated on outside stranded conductor bundle.
Embodiment 7
Asking for an interview Figure 10, a kind of electric power cable, it includes restrictive coating 1,4 conductive units; It is characterized in that any two conductive units are all separated by parting bead 11; On arbitrary cross section of cable, the shape that all parting beads are formed by connecting is A font, and arbitrary parting bead is all line segment shape; Parting bead is formed together with restrictive coating being; The material of restrictive coating is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or tetrafluoroethylene or nylon.
Embodiment 8
Asking for an interview Figure 11, a kind of electric power cable, it includes restrictive coating 1,4 conductive units; It is characterized in that any two conductive units are all separated by parting bead 11; On arbitrary cross section of cable, the shape that all parting beads are formed by connecting is N font, and arbitrary parting bead is all line segment shape; Parting bead is formed together with restrictive coating being; The material of restrictive coating is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or tetrafluoroethylene or nylon; Wherein, there are two arch, two sectors in the cross section of conductive unit.
The making method of a kind of electric power cable, it is characterised in that comprise the step that next coming in order carry out and gather:
The first step: the step making conductive unit: getting many conductor skein silks and close formation conductive unit, the cross section of conductive unit is two sectors, two arch; Or getting many conductor skein silks to close and become stranded conductor bundle, form conductive unit at the outer extrusion molding coated insulation layer of stranded conductor bundle, the cross section of conductive unit is two sectors, two arch;
2nd step: the step being extruded into cable: sheath material is inserted electric wire extruding machine and makes it reach and extrude requirement, by the conductive unit of gained in the first step through in the mould of extrusion head, unlatching extruding machine makes sheath material enter and forms parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in cooling trough and outside being coated on conductive unit, forms power cable; Wherein, on arbitrary cross section of described cable, the shape that all parting beads are formed by connecting is N font, and arbitrary parting bead is all line segment shape; The two ends of every root parting bead are all connected on restrictive coating; On arbitrary cross section of cable, the outer edge of every root conductive unit all has a circular shape, and the outer edge of the circular arc of all conductive units centered by the center of circle of restrictive coating circumferentially.
Embodiment 9
Asking for an interview Figure 12, a kind of electric power cable, it includes restrictive coating 1,4 conductive units; It is characterized in that any two conductive units are all separated by parting bead 11; On arbitrary cross section of cable, the shape that all parting beads are formed by connecting is X font, and arbitrary parting bead is all line segment shape; Parting bead is formed together with restrictive coating being; The material of restrictive coating is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or tetrafluoroethylene or nylon; Wherein, the cross section of conductive unit is four sectors.
Embodiment 10
Asking for an interview Figure 13, a kind of electric power cable, it includes restrictive coating 1,4 conductive units; It is characterized in that any two conductive units are all separated by parting bead 11; On arbitrary cross section of cable, the shape that all parting beads are formed by connecting is K font, and arbitrary parting bead is all line segment shape; Parting bead is formed together with restrictive coating being; The material of restrictive coating is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or tetrafluoroethylene or nylon; Wherein, there are an arch, three sectors in the cross section of conductive unit.
Embodiment 11
Asking for an interview Figure 14, a kind of electric power cable, it includes restrictive coating 1,3 conductive units; It is characterized in that any two conductive units are all separated by parting bead 11; On arbitrary cross section of cable, the shape that all parting beads are formed by connecting is M font or W font, and arbitrary parting bead is all line segment shape; Parting bead is formed together with restrictive coating being; The material of restrictive coating is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or tetrafluoroethylene or nylon; Wherein, there are two arch, three sectors in the cross section of conductive unit.
The making method of a kind of electric power cable, it is characterised in that comprise the step that next coming in order carry out and gather:
The first step: the step making conductive unit: getting many conductor skein silks and close formation conductive unit, the cross section of conductive unit is three sectors, an arch; Or getting many conductor skein silks to close and become stranded conductor bundle, form conductive unit at the outer extrusion molding coated insulation layer of stranded conductor bundle, the cross section of conductive unit is three sectors, an arch;
2nd step: the step being extruded into cable: sheath material is inserted electric wire extruding machine and makes it reach and extrude requirement, by the conductive unit of gained in the first step through in the mould of extrusion head, unlatching extruding machine makes sheath material enter and forms parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in cooling trough and outside being coated on conductive unit, forms power cable; Wherein, on arbitrary cross section of described cable, the shape that all parting beads are formed by connecting is K font, and arbitrary parting bead is all line segment shape; The two ends of every root parting bead are all connected on restrictive coating; On arbitrary cross section of cable, the outer edge of every root conductive unit all has a circular shape, and the outer edge of the circular arc of all conductive units centered by the center of circle of restrictive coating circumferentially.
A kind of electric power cable described in above-mentioned embodiment, it is characterised in that when the shape that described parting bead is formed by connecting is M font or N font or V-shaped or W font or during X font, the two ends of every root parting bead are all connected on restrictive coating.
A kind of electric power cable described in above-mentioned embodiment, it is characterized in that when the shape that described parting bead is formed by connecting is H font or K font or M font or N font or V-shaped or W font or X font or during Y font, on arbitrary cross section of cable, the outer edge of every root conductive unit all has a circular shape, and the outer edge of the circular arc of all conductive units centered by the center of circle of restrictive coating circumferentially.
A kind of electric power cable described in above-mentioned embodiment, it is characterized in that by weight, described restrictive coating can also be made up of following raw material: polyethylene: 50��70 parts, ethylene vinyl acetate copolymer: 6��10 parts, magnesium hydroxide: 10��16 parts, model be the coupling agent of TMC-38S: 1��3 part, antioxidant 1010: 1��3 part, titanium dioxide or carbon black: 2.5��5.5 parts, paraffin: 3��5 parts, dibutyl phthalate: 5��10 parts, polyvinyl alcohol: 5��10 parts, tributyl phosphate: 3��5 parts, silicone oil: 3��5 parts.
Optimum formula rate is: by weight, described restrictive coating is made up of following raw material: polyethylene: 60 parts, ethylene vinyl acetate copolymer: 8 parts, magnesium hydroxide: 13 parts, model be the coupling agent of TMC-38S: 2 parts, antioxidant 1010: 2 parts, titanium dioxide or carbon black: 4 parts, paraffin: 4 parts, dibutyl phthalate: 7 parts, polyvinyl alcohol: 7 parts, tributyl phosphate: 4 parts, silicone oil: 4 parts.
Through test, the oxygen index of the sheath material of above-mentioned big numerical range reaches and has exceeded 34, the process velocity of cable that �� 45 sheath extruding machine, �� 60 sheath extruding machine, �� 90 sheath extruding machine, �� 125 sheath extruding machine, �� 150 sheath extruding machine processing diameter is 35mm reaches 40m/min, 50m/min, 80m/min, 120m/min, 150m/min respectively, and the restrictive coating smooth surface extruded, without pore, impulse-free robustness; The tensile strength minimum value of restrictive coating reaches 18MPa, elongation at break minimum value be 380%, 100 DEG C of maximum collapse values of 96 hours is 3.5%, therefore, reaches more satisfactory effect.
In the present invention, the shape that parting bead is formed by connecting is special alphabetical shape, very it is convenient to produce, and the shape of conductive unit is no longer single sector, therefore the area of parting bead is less, therefore, the space of cable can be made to be utilised more efficiently, during namely same cross-sectional area, it is possible to carry the higher magnitude of current.
In the present invention, the shape that parting bead is formed by connecting is special letter shapes, belong to an invention design, and except the shape being formed by connecting except parting bead is A font, in other enforcement mode, restrictive coating can be made identification sign, such as groove, convex bar, print word etc., all strippings can be reached not and open cable, and reach the object identifying and taking out conductive unit, therefore, it is easier to construction.
Therefore, power cable of the present invention has following main useful effect: structure simply, easily make, be easy to safeguard with deposited work, current capacity higher.
The present invention is not limited to above-mentioned preferred forms, it will be appreciated that the design of the present invention can be implemented to use by other various forms, and they drop in protection scope of the present invention equally.

Claims (6)

1. an electric power cable, it includes restrictive coating, many conductive units; It is characterized in that any two conductive units are all separated by parting bead; On arbitrary cross section of cable, the shape that all parting beads are formed by connecting is K font or M font or N font or W font, and arbitrary parting bead is all line segment shape; Parting bead is formed together with restrictive coating being; Described conductive unit is the conductor bundle closed of many conductor skein silks or is made up of stranded conductor bundle, the insulation layer that is coated on outside stranded conductor bundle; On arbitrary cross section of cable, the outer edge of every root conductive unit all has a circular shape, and the outer edge of the circular arc of all conductive units centered by the center of circle of restrictive coating circumferentially; By weight, described restrictive coating is made up of following raw material: polyethylene: 60 parts, ethylene vinyl acetate copolymer: 8 parts, magnesium hydroxide: 13 parts, model be the coupling agent of TMC-38S: 2 parts, antioxidant 1010: 2 parts, titanium dioxide or carbon black: 4 parts, paraffin: 4 parts, dibutyl phthalate: 7 parts, polyvinyl alcohol: 7 parts, tributyl phosphate: 4 parts, silicone oil: 4 parts; The oxygen index of described sheath material is not less than 34, and the process velocity maximum value of cable being 35mm with �� 45 sheath extruding machine, �� 60 sheath extruding machine, �� 90 sheath extruding machine, �� 125 sheath extruding machine, �� 150 sheath extruding machine processing diameter is respectively 40m/min, 50m/min, 80m/min, 120m/min, 150m/min; The tensile strength minimum value of restrictive coating reaches 18MPa, elongation at break minimum value be 380%, 100 DEG C of maximum collapse values of 96 hours is 3.5%.
2. an electric power cable, it includes restrictive coating, many conductive units; It is characterized in that any two conductive units are all separated by parting bead; On arbitrary cross section of cable, the shape that all parting beads are formed by connecting is K font or M font or N font or W font, and arbitrary parting bead is all line segment shape; Parting bead is formed together with restrictive coating being; Described conductive unit is the conductor bundle closed of many conductor skein silks or is made up of stranded conductor bundle, the insulation layer that is coated on outside stranded conductor bundle; When the shape that described parting bead is formed by connecting is M font or N font or during W font, the two ends of every root parting bead are all connected on restrictive coating; On arbitrary cross section of cable, the outer edge of every root conductive unit all has a circular shape, and the outer edge of the circular arc of all conductive units centered by the center of circle of restrictive coating circumferentially; By weight, described restrictive coating is made up of following raw material: polyethylene: 60 parts, ethylene vinyl acetate copolymer: 8 parts, magnesium hydroxide: 13 parts, model be the coupling agent of TMC-38S: 2 parts, antioxidant 1010: 2 parts, titanium dioxide or carbon black: 4 parts, paraffin: 4 parts, dibutyl phthalate: 7 parts, polyvinyl alcohol: 7 parts, tributyl phosphate: 4 parts, silicone oil: 4 parts; The oxygen index of described sheath material is not less than 34, and the process velocity maximum value of cable being 35mm with �� 45 sheath extruding machine, �� 60 sheath extruding machine, �� 90 sheath extruding machine, �� 125 sheath extruding machine, �� 150 sheath extruding machine processing diameter is respectively 40m/min, 50m/min, 80m/min, 120m/min, 150m/min; The tensile strength minimum value of restrictive coating reaches 18MPa, elongation at break minimum value be 380%, 100 DEG C of maximum collapse values of 96 hours is 3.5%.
3. an electric power cable, it includes restrictive coating, many conductive units, it is characterized in that any two conductive units are all separated by parting bead, on arbitrary cross section of cable, the shape that all parting beads are formed by connecting is K font or M font or N font or W font, and arbitrary parting bead is all line segment shape, parting bead is formed together with restrictive coating being, the material of restrictive coating is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or tetrafluoroethylene or nylon or by weight, the material of described restrictive coating is made up of following raw material: polyethylene: 50��70 parts, ethylene vinyl acetate copolymer: 6��10 parts, magnesium hydroxide: 10��16 parts, model is the coupling agent of TMC-38S: 1��3 part, antioxidant 1010: 1��3 part, titanium dioxide or carbon black: 2.5��5.5 parts, paraffin: 3��5 parts, dibutyl phthalate: 5��10 parts, polyvinyl alcohol: 5��10 parts, tributyl phosphate: 3��5 parts, silicone oil: 3��5 parts.
4. a kind of electric power cable according to claim 3, it is characterised in that described conductive unit is the conductor bundle closed of many conductor skein silks or is made up of stranded conductor bundle, the insulation layer that is coated on outside stranded conductor bundle.
5. a kind of electric power cable according to claim 4, it is characterised in that the two ends of every root parting bead are all connected on restrictive coating.
6. according to claim 3 or claim 4 or a kind of electric power cable according to claim 5, it is characterized in that on arbitrary cross section of cable, the outer edge of every root conductive unit all has a circular shape, and the outer edge of the circular arc of all conductive units centered by the center of circle of restrictive coating circumferentially.
CN201610205839.8A 2014-08-27 2014-08-27 A kind of electric power cable Expired - Fee Related CN105655044B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1764988A (en) * 2003-03-28 2006-04-26 格鲁普通用电缆系统有限责任公司 Metallic conductor and process of manufacturing same
EP1986199A2 (en) * 2007-04-26 2008-10-29 Nexans Method of producing a class 5 insulated electric conductor
CN203038688U (en) * 2012-12-18 2013-07-03 博侃电气（合肥）有限公司 High-density mineral insulated cable
CN103295675A (en) * 2013-03-16 2013-09-11 方秀琴 Cable with simple structure and manufacture method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1764988A (en) * 2003-03-28 2006-04-26 格鲁普通用电缆系统有限责任公司 Metallic conductor and process of manufacturing same
EP1986199A2 (en) * 2007-04-26 2008-10-29 Nexans Method of producing a class 5 insulated electric conductor
CN203038688U (en) * 2012-12-18 2013-07-03 博侃电气（合肥）有限公司 High-density mineral insulated cable
CN103295675A (en) * 2013-03-16 2013-09-11 方秀琴 Cable with simple structure and manufacture method thereof

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