CN104599775B - A kind of electric power cable and preparation method thereof - Google Patents
A kind of electric power cable and preparation method thereof Download PDFInfo
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- CN104599775B CN104599775B CN201510049835.0A CN201510049835A CN104599775B CN 104599775 B CN104599775 B CN 104599775B CN 201510049835 A CN201510049835 A CN 201510049835A CN 104599775 B CN104599775 B CN 104599775B
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- 238000000576 coating method Methods 0.000 claims abstract description 82
- 239000000463 material Substances 0.000 claims abstract description 40
- -1 polyethylene Polymers 0.000 claims abstract description 36
- 239000004698 Polyethylene Substances 0.000 claims abstract description 26
- 229920000573 polyethylene Polymers 0.000 claims abstract description 26
- 239000004020 conductor Substances 0.000 claims description 56
- 238000001125 extrusion Methods 0.000 claims description 24
- 230000015572 biosynthetic process Effects 0.000 claims description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 6
- 239000007822 coupling agent Substances 0.000 claims description 6
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- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 6
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- 229920002545 silicone oil Polymers 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
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- Manufacturing Of Electric Cables (AREA)
- Insulated Conductors (AREA)
Abstract
The invention belongs to electric power and technical field of cables, especially relate to a kind of 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, what all parting beads were formed by connecting is shaped as 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；The material of restrictive coating is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or polytetrafluoroethylene (PTFE) or nylon or special formula；The invention also discloses its preparation method.The present invention has a following main beneficial effect: simple in construction, easily make, be easily maintained and apply that work, current-carrying capacity be higher, restrictive coating performance more preferably, be more easy to processed.
Description
The application is entitled: a kind of new structure cable and preparation method thereof, filing date: on 08 27th, 2014, Application No.: the divisional 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 preparation 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.As the industry of a comparative maturity, the joint Zhi Jiangben of electric wire is the most increasingly paid attention to by industry, and the construction of cable is got in polarization, and several functions is integrated by the highly integrated complication of one-level, and saving is laid, operation expense；Another level is for simplifying the structure, and in the case of meeting professional standard, national standard, company standard, structure is the simplest, cost is the lowest, and this mode meets the requirement of low-carbon environment-friendly.To this end, the domestic structure for cable has carried out substantial amounts of research, such as: publication No. is CN103123824A, patent name is: a kind of cable with simple structure and manufacture method thereof, it is to be made up of many conductors, the restrictive coating that enveloped by conductor；It is characterized in that, between two conductors of arbitrary neighborhood, there is jacket layer material；On the cross section of cable, within the edge of any one conductor is all located at the border of restrictive coating；Described many conductors are distributed along restrictive coating, and are discontiguous between any two conductors；It is by offering cylindrical or the hole of fan cylinder shape in restrictive coating, conductor is inserted hole is formed cable, this mode has reached the easy purpose of structure really, but, for restrictive coating in irregular shape between adjacent conductor, this mode does not reasonably utilize space, and flexibility mode can not meet requirement.
Summary of the invention
In order to solve the problems referred to above, it is an object of the invention to disclose a kind of electric power cable and preparation 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, what all parting beads were formed by connecting is shaped as 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-shaped, and arbitrary parting bead is all line segment shape；Parting bead is formed together with restrictive coating；The material of restrictive coating is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or polytetrafluoroethylene (PTFE) 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 insulating barrier 122 that is coated on outside stranded conductor bundle.
A kind of electric power cable described above, it is characterised in that when described parting bead be formed by connecting when being shaped as M font or N font or V-shaped or W font or X font, the two ends of every parting bead are all connected on restrictive coating.
A kind of electric power cable described above, it is characterized in that when described parting bead be formed by connecting when being shaped as H font or K font or M font or N font or V-shaped or W font or X font or Y-shaped, on arbitrary cross section of cable, the outward flange of every conductive unit all has a circular shape, and the circular arc outward flange of all conductive units is on the circumference centered by the center of circle of restrictive coating.
The preparation 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: make the step of conductive unit: taking many conductor skein silks and close formation conductive unit, the cross section of conductive unit is two arch, a sector；Or taking many conductor skein silks conjunctions and form 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；
Second step: be extruded into the step of cable: sheath material is inserted electric wire extruding machine and reaches extrusion requirement, the conductive unit of gained in the first step is passed in the mould of extrusion head, opening extruding machine makes sheath material enter formation parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in bosh and is coated on outside conductive unit, forms power cable；Wherein, on arbitrary cross section of described cable, what all parting beads were formed by connecting is shaped as V-shaped, and arbitrary parting bead is all line segment shape；The two ends of every parting bead are all connected on restrictive coating；On arbitrary cross section of cable, the outward flange of every conductive unit all has a circular shape, and the circular arc outward flange of all conductive units is on the circumference centered by the center of circle of restrictive coating.
The preparation 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: make the step of conductive unit: taking many conductor skein silks and close formation conductive unit, the cross section of conductive unit is two sectors, two arch；Or taking many conductor skein silks conjunctions and form 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；
Second step: be extruded into the step of cable: sheath material is inserted electric wire extruding machine and reaches extrusion requirement, the conductive unit of gained in the first step is passed in the mould of extrusion head, opening extruding machine makes sheath material enter formation parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in bosh and is coated on outside conductive unit, forms power cable；Wherein, on arbitrary cross section of described cable, what all parting beads were formed by connecting is shaped as N font, and arbitrary parting bead is all line segment shape；The two ends of every parting bead are all connected on restrictive coating；On arbitrary cross section of cable, the outward flange of every conductive unit all has a circular shape, and the circular arc outward flange of all conductive units is on the circumference centered by the center of circle of restrictive coating.
The preparation 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: make the step of conductive unit: taking many conductor skein silks and close formation conductive unit, the cross section of conductive unit is three sectors, an arch；Or taking many conductor skein silks conjunctions and form 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；
Second step: be extruded into the step of cable: sheath material is inserted electric wire extruding machine and reaches extrusion requirement, the conductive unit of gained in the first step is passed in the mould of extrusion head, opening extruding machine makes sheath material enter formation parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in bosh and is coated on outside conductive unit, forms power cable；Wherein, on arbitrary cross section of described cable, what all parting beads were formed by connecting is shaped as K font, and arbitrary parting bead is all line segment shape；The two ends of every parting bead are all connected on restrictive coating；On arbitrary cross section of cable, the outward flange of every conductive unit all has a circular shape, and the circular arc outward flange of all conductive units is on the circumference centered by the center of circle of restrictive coating.
The preparation 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: make the step of conductive unit: taking many conductor skein silks and close formation conductive unit, the cross section of conductive unit is three sectors, two arch；Or taking many conductor skein silks conjunctions and form 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；
Second step: be extruded into the step of cable: sheath material is inserted electric wire extruding machine and reaches extrusion requirement, the conductive unit of gained in the first step is passed in the mould of extrusion head, opening extruding machine makes sheath material enter formation parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in bosh and is coated on outside conductive unit, forms power cable；Wherein, on arbitrary cross section of described cable, what all parting beads were formed by connecting is shaped as W font or M font, and arbitrary parting bead is all line segment shape；The two ends of every parting bead are all connected on restrictive coating；On arbitrary cross section of cable, the outward flange of every conductive unit all has a circular shape, and the circular arc outward flange of all conductive units is on the circumference centered by the center of circle of restrictive coating.
In the present invention, what parting bead was formed by connecting is shaped as special alphabetical shape, it is highly convenient for producing, and the shape of conductive unit is no longer single sector, therefore the area of parting bead is less, accordingly, it is capable to make the space of cable be utilised more efficiently, during the most same cross-sectional area, the higher magnitude of current can be carried.
In the present invention, except parting bead be formed by connecting be shaped as A font in addition to, in other embodiment, identification sign can be made on restrictive coating, such as groove, raised line, lettering etc., all strip off cables can be reached not, and reach to identify and take out the purpose of conductive unit, therefore, it is easier to construction.
Therefore, power cable of the present invention has a following main beneficial effect: simple in construction, easily to make, be easily maintained and apply work, current-carrying capacity higher.
Accompanying drawing explanation
Fig. 1 is the perspective view that after embodiment 1 of the present invention 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 embodiment 2 of the present invention intercepts a section, solution is cut open.
Fig. 4 is the perspective view that after embodiment 3 of the present invention 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 embodiment 4 of the present invention intercepts a section, solution is cut open.
Fig. 7 is the perspective view that after embodiment 5 of the present invention 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 embodiment 6 of the present invention intercepts a section, solution is cut open.
Figure 10 is the cross-sectional structure schematic diagram after embodiment 7 of the present invention removes conductive unit.
Figure 11 is the cross-sectional structure schematic diagram after embodiment 8 of the present invention removes conductive unit.
Figure 12 is the cross-sectional structure schematic diagram after embodiment 9 of the present invention removes conductive unit.
Figure 13 is the cross-sectional structure schematic diagram after embodiment 10 of the present invention removes conductive unit.
Figure 14 is the cross-sectional structure schematic diagram after embodiment 11 of the present invention removes conductive unit.
Detailed description of the invention
Embodiment
1
Asking for an interview Fig. 1 and Fig. 2, a kind of electric power cable, it includes 1,3 conductive units 12 of restrictive coating；It is characterized in that any two conductive units are all separated by parting bead 11；On arbitrary cross section of cable, what all parting beads were formed by connecting is shaped as V-shaped, and arbitrary parting bead is all line segment shape；Parting bead is formed together with restrictive coating；The material of restrictive coating is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or polytetrafluoroethylene (PTFE) or nylon；Wherein, there are two arch, a sector in the cross section of conductive unit.
The preparation 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: make the step of conductive unit: taking many conductor skein silks and close formation conductive unit, the cross section of conductive unit is two arch, a sector；Or taking many conductor skein silks conjunctions and form 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；
Second step: be extruded into the step of cable: sheath material is inserted electric wire extruding machine and reaches extrusion requirement, the conductive unit of gained in the first step is passed in the mould of extrusion head, opening extruding machine makes sheath material enter formation parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in bosh and is coated on outside conductive unit, forms power cable；Wherein, on arbitrary cross section of described cable, what all parting beads were formed by connecting is shaped as V-shaped, and arbitrary parting bead is all line segment shape；The two ends of every parting bead are all connected on restrictive coating；On arbitrary cross section of cable, the outward flange of every conductive unit all has a circular shape, and the circular arc outward flange of all conductive units is on the circumference centered by the center of circle of restrictive coating.
Embodiment
2
Ask for an interview Fig. 3, and with reference to Fig. 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 insulating barrier 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 1,3 conductive units 12 of restrictive coating；It is characterized in that any two conductive units are all separated by parting bead 11；On arbitrary cross section of cable, what all parting beads were formed by connecting is shaped as Y-shaped, and arbitrary parting bead is all line segment shape；Parting bead is formed together with restrictive coating；The material of restrictive coating is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or polytetrafluoroethylene (PTFE) or nylon；Wherein, the cross section of conductive unit is three sectors.
Embodiment
4
Ask for an interview Fig. 6, and with reference to Fig. 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 insulating barrier 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 1,4 conductive units 12 of restrictive coating；It is characterized in that any two conductive units are all separated by parting bead 11；On arbitrary cross section of cable, what all parting beads were formed by connecting is shaped as H font, and arbitrary parting bead is all line segment shape；Parting bead is formed together with restrictive coating；The material of restrictive coating is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or polytetrafluoroethylene (PTFE) or nylon；Wherein, having two in the cross section of conductive unit is two arch, two similar right-angled trapezium, but the hypotenuse of vertical ladder shape is circular shape, and circular arc is near restrictive coating.
Embodiment
6
Ask for an interview Fig. 9, and with reference to Fig. 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 insulating barrier 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 1,4 conductive units of restrictive coating；It is characterized in that any two conductive units are all separated by parting bead 11；On arbitrary cross section of cable, what all parting beads were formed by connecting is shaped as A font, and arbitrary parting bead is all line segment shape；Parting bead is formed together with restrictive coating；The material of restrictive coating is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or polytetrafluoroethylene (PTFE) or nylon.
Embodiment
8
Asking for an interview Figure 11, a kind of electric power cable, it includes 1,4 conductive units of restrictive coating；It is characterized in that any two conductive units are all separated by parting bead 11；On arbitrary cross section of cable, what all parting beads were formed by connecting is shaped as N font, and arbitrary parting bead is all line segment shape；Parting bead is formed together with restrictive coating；The material of restrictive coating is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or polytetrafluoroethylene (PTFE) or nylon；Wherein, there are two arch, two sectors in the cross section of conductive unit.
The preparation 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: make the step of conductive unit: taking many conductor skein silks and close formation conductive unit, the cross section of conductive unit is two sectors, two arch；Or taking many conductor skein silks conjunctions and form 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；
Second step: be extruded into the step of cable: sheath material is inserted electric wire extruding machine and reaches extrusion requirement, the conductive unit of gained in the first step is passed in the mould of extrusion head, opening extruding machine makes sheath material enter formation parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in bosh and is coated on outside conductive unit, forms power cable；Wherein, on arbitrary cross section of described cable, what all parting beads were formed by connecting is shaped as N font, and arbitrary parting bead is all line segment shape；The two ends of every parting bead are all connected on restrictive coating；On arbitrary cross section of cable, the outward flange of every conductive unit all has a circular shape, and the circular arc outward flange of all conductive units is on the circumference centered by the center of circle of restrictive coating.
Embodiment
9
Asking for an interview Figure 12, a kind of electric power cable, it includes 1,4 conductive units of restrictive coating；It is characterized in that any two conductive units are all separated by parting bead 11；On arbitrary cross section of cable, what all parting beads were formed by connecting is shaped as X font, and arbitrary parting bead is all line segment shape；Parting bead is formed together with restrictive coating；The material of restrictive coating is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or polytetrafluoroethylene (PTFE) 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 1,4 conductive units of restrictive coating；It is characterized in that any two conductive units are all separated by parting bead 11；On arbitrary cross section of cable, what all parting beads were formed by connecting is shaped as K font, and arbitrary parting bead is all line segment shape；Parting bead is formed together with restrictive coating；The material of restrictive coating is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or polytetrafluoroethylene (PTFE) 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 1,3 conductive units of restrictive coating；It is characterized in that any two conductive units are all separated by parting bead 11；On arbitrary cross section of cable, what all parting beads were formed by connecting is shaped as M font or W font, and arbitrary parting bead is all line segment shape；Parting bead is formed together with restrictive coating；The material of restrictive coating is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene or polyvinyl chloride or polytetrafluoroethylene (PTFE) or nylon；Wherein, there are two arch, three sectors in the cross section of conductive unit.
The preparation 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: make the step of conductive unit: taking many conductor skein silks and close formation conductive unit, the cross section of conductive unit is three sectors, an arch；Or taking many conductor skein silks conjunctions and form 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；
Second step: be extruded into the step of cable: sheath material is inserted electric wire extruding machine and reaches extrusion requirement, the conductive unit of gained in the first step is passed in the mould of extrusion head, opening extruding machine makes sheath material enter formation parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in bosh and is coated on outside conductive unit, forms power cable；Wherein, on arbitrary cross section of described cable, what all parting beads were formed by connecting is shaped as K font, and arbitrary parting bead is all line segment shape；The two ends of every parting bead are all connected on restrictive coating；On arbitrary cross section of cable, the outward flange of every conductive unit all has a circular shape, and the circular arc outward flange of all conductive units is on the circumference centered by the center of circle of restrictive coating.
A kind of electric power cable described in above-mentioned embodiment, it is characterised in that when described parting bead be formed by connecting when being shaped as M font or N font or V-shaped or W font or X font, the two ends of every 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 described parting bead be formed by connecting when being shaped as H font or K font or M font or N font or V-shaped or W font or X font or Y-shaped, on arbitrary cross section of cable, the outward flange of every conductive unit all has a circular shape, and the circular arc outward flange of all conductive units is on the circumference centered by the center of circle of restrictive coating.
A kind of electric power cable described in above-mentioned embodiment, it is characterized in that by weight, described restrictive coating can also is that and is 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 to be 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 (OI) of the protective cover material of above-mentioned big number range reaches and has exceeded 34, Φ 45 sheath extruding machine, Φ 60 sheath extruding machine, Φ 90 sheath extruding machine, Φ 125 sheath extruding machine, Φ 150 sheath extruding machine are processed the process velocity of cable of a diameter of 35mm and have been respectively reached 40m/min, 50m/min, 80m/min, 120m/min, 150m/min, and the restrictive coating smooth surface extruded, pore-free, impulse-free robustness；The tensile strength minimum of a value of restrictive coating reaches 18MPa, elongation at break minimum of a value be 380%, 100 DEG C of maximum collapse values of 96 hours be 3.5%, therefore, reached more satisfactory effect.
In the present invention, what parting bead was formed by connecting is shaped as special alphabetical shape, it is highly convenient for producing, and the shape of conductive unit is no longer single sector, therefore the area of parting bead is less, accordingly, it is capable to make the space of cable be utilised more efficiently, during the most same cross-sectional area, the higher magnitude of current can be carried.
In the present invention, what parting bead was formed by connecting is shaped as special letter shapes, belong to an inventive concept, and except parting bead be formed by connecting be shaped as A font in addition to, in other embodiment, identification sign can be made on restrictive coating, such as groove, raised line, lettering etc., all strip off cables can be reached not, and reach to identify and take out the purpose of conductive unit, therefore, it is easier to construction.
Therefore, power cable of the present invention has a following main beneficial effect: simple in construction, easily to make, be easily maintained and apply work, current-carrying 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 also fall within protection scope of the present invention.
Claims (3)
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, what all parting beads were formed by connecting is shaped as K font or M font or W font, and any one parting bead is all line segment shape；Parting bead is formed together with restrictive coating；On arbitrary cross section of cable, the outward flange of every conductive unit all has a circular shape, and the circular arc outward flange of all conductive units is on the circumference centered by the center of circle of restrictive coating；By weight, described restrictive coating is to be 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 (OI) of described protective cover material is not less than 34, and the process velocity maximum of cable processing a diameter of 35mm with Φ 45 sheath extruding machine, Φ 60 sheath extruding machine, Φ 90 sheath extruding machine, Φ 125 sheath extruding machine, Φ 150 sheath extruding machine is respectively 40m/min, 50m/min, 80m/min, 120m/min, 150m/min；Tensile strength minimum of a value 18MPa of restrictive coating, elongation at break minimum of a value be 380%, 100 DEG C of maximum collapse values of 96 hours be 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, what all parting beads were formed by connecting is shaped as N font, and any one parting bead is all line segment shape；Parting bead is formed together with restrictive coating；On arbitrary cross section of cable, the outward flange of every conductive unit all has a circular shape, and the circular arc outward flange of all conductive units is on the circumference centered by the center of circle of restrictive coating；By weight, described restrictive coating is to be 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 (OI) of described protective cover material is not less than 34, and the process velocity maximum of cable processing a diameter of 35mm with Φ 45 sheath extruding machine, Φ 60 sheath extruding machine, Φ 90 sheath extruding machine, Φ 125 sheath extruding machine, Φ 150 sheath extruding machine is respectively 40m/min, 50m/min, 80m/min, 120m/min, 150m/min；Tensile strength minimum of a value 18MPa of restrictive coating, elongation at break minimum of a value be 380%, 100 DEG C of maximum collapse values of 96 hours be 3.5%.
3. the method making a kind of electric power cable described in claim 2, it is characterised in that comprise the step that next coming in order carry out and gather:
The first step: make the step of conductive unit: taking many conductor skein silks and close formation conductive unit, the cross section of conductive unit is two sectors, two arch；Or taking many conductor skein silks conjunctions and form 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；
Second step: be extruded into the step of cable: sheath material is inserted electric wire extruding machine and reaches extrusion requirement, the conductive unit of gained in the first step is passed in the mould of extrusion head, opening extruding machine makes sheath material enter formation parting bead and restrictive coating in mould, traction conductive unit, sheath material is towed in bosh and is coated on outside conductive unit, is formedElectric power is usedCable；Wherein, on arbitrary cross section of described cable, what all parting beads were formed by connecting is shaped as N font, and any one parting bead is all line segment shape；The two ends of every parting bead are all connected on restrictive coating；On arbitrary cross section of cable, the outward flange of every conductive unit all has a circular shape, and the circular arc outward flange of all conductive units is on the circumference centered by the center of circle of restrictive coating；By weight, the material of described sheath 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.
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| CN201510049835.0A CN104599775B (en) | 2014-08-27 | 2014-08-27 | A kind of electric power cable and preparation method thereof |
| CN201410427639.8A CN104361938B (en) | 2014-08-27 | 2014-08-27 | A kind of power cable and preparation method thereof |
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| CN104599774B (en) * | 2014-08-27 | 2017-01-11 | 国家电网公司 | Cable and manufacturing method thereof |
| CN106340358A (en) * | 2016-11-09 | 2017-01-18 | 蒋菊生 | Manufacture method of power composite water supply pipeline |
| CN107945914A (en) * | 2017-11-24 | 2018-04-20 | 安徽国华电缆集团有限公司 | A kind of fluoroplastic high-temperature-resistant power cable |
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| CN202473436U (en) * | 2011-12-26 | 2012-10-03 | 北京三昌橡胶制品有限公司 | Rubber separation sheath |
| CN203038688U (en) * | 2012-12-18 | 2013-07-03 | 博侃电气（合肥）有限公司 | High-density mineral insulated cable |
| KR20130088466A (en) * | 2012-01-31 | 2013-08-08 | 엘에스전선 주식회사 | Insulation composition for high flame-retardant and low emitting smoke, separators using the same and cable having the seperators |
| CN103295675A (en) * | 2013-03-16 | 2013-09-11 | 方秀琴 | Cable with simple structure and manufacture method thereof |
| CN104599774A (en) * | 2014-08-27 | 2015-05-06 | 沈群华 | Cable with novel structure and manufacturing method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202473436U (en) * | 2011-12-26 | 2012-10-03 | 北京三昌橡胶制品有限公司 | Rubber separation sheath |
| KR20130088466A (en) * | 2012-01-31 | 2013-08-08 | 엘에스전선 주식회사 | Insulation composition for high flame-retardant and low emitting smoke, separators using the same and cable having the seperators |
| 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 |
| CN104599774A (en) * | 2014-08-27 | 2015-05-06 | 沈群华 | Cable with novel structure and manufacturing method thereof |
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