CN108597653B - Medium-voltage port machine cable for dragging composite three-layer sheath and manufacturing method thereof - Google Patents
Medium-voltage port machine cable for dragging composite three-layer sheath and manufacturing method thereof Download PDFInfo
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- CN108597653B CN108597653B CN201810359485.1A CN201810359485A CN108597653B CN 108597653 B CN108597653 B CN 108597653B CN 201810359485 A CN201810359485 A CN 201810359485A CN 108597653 B CN108597653 B CN 108597653B
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- 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
- H01B7/0009—Details relating to the conductive cores
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
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- 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
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- 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
- H01B13/02—Stranding-up
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- 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
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
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- 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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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- 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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
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- 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
- H01B7/0045—Cable-harnesses
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- 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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
- H01B7/041—Flexible cables, conductors, or cords, e.g. trailing cables attached to mobile objects, e.g. portable tools, elevators, mining equipment, hoisting cables
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- 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
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
- H01B7/183—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of an outer sheath
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- 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
- H01B7/187—Sheaths comprising extruded non-metallic layers
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- 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
- H01B7/1875—Multi-layer sheaths
Abstract
The invention relates to a middle-pressure port machine cable for dragging a composite three-layer sheath and a manufacturing method thereof, belonging to the technical field of cable manufacturing. The technical proposal is as follows: a central reinforcing piece (7) is arranged in the Y-shaped semiconductive rubber core (6), and a power wire core, a control wire core unit, a power wire core, an optical fiber unit, a power wire core and a ground wire core are sequentially arranged around the outer side of the Y-shaped semiconductive rubber core (6) by taking the Y-shaped semiconductive rubber core (6) as the center to form a port pressing machine cable wire core; the cable core of the port pressing machine is sequentially extruded with an inner protective layer (13), a middle protective layer (14) and an outer protective layer (16) from inside to outside, wherein the middle protective layer (14) contains a reinforcing layer (15). The invention has the positive effects that: 1. multiple cable functions are combined into one cable, so that the cable space is saved; 2. the three-layer sheath structure increases the reliability of the cable by the division of different sheaths. 3. The Y-shaped semiconductive rubber core is directly extruded by using the die, so that the cable structure is more reasonable and stable.
Description
Technical Field
The invention relates to a middle-pressure port machine cable for dragging a composite three-layer sheath and a manufacturing method thereof, belonging to the technical field of cable manufacturing.
Background
The seaborne prosperous and prosperous harbor machinery is developed rapidly, but the matched cable is often required to move at high speed due to frequent hoisting of the harbor machinery, and bear large pulling force and bending, and under the continuous working state of reciprocating winding, the internal structure of the cable is affected by external force to cause mechanical damage of broken cores caused by displacement, distortion, stress concentration and the like of assembly elements. Meanwhile, along with automation of mechanical equipment, the intelligent and continuous promotion is realized, various cables are required to be matched for use, and due to the influence of space and laying factors, cables with various different performance requirements are combined into a composite cable. In the repeated winding use process of the traditional cable, the cable core position is easy to move, and the structure is unstable.
Disclosure of Invention
The invention aims to provide a medium-voltage port machine cable for dragging a composite three-layer sheath and a manufacturing method thereof, which are used for compounding multiple functions of cable conveying, signal control and optical fiber communication into a cable, improving the stability of the cable structure, ensuring the service life of the cable and solving the problems existing in the prior art.
The technical scheme of the invention is as follows:
a composite three-layer sheath towing medium voltage harbor machine cable comprises a tinned copper conductor, an ethylene propylene insulation layer, a control wire core conductor, an FEP control wire core insulation layer, an aluminum plastic composite tape shielding layer, a Y-shaped semiconductive rubber core, a central reinforcing member, a ground wire conductor, a semiconductive layer, an optical fiber, an ETFE loose tube, an optical fiber reinforcing member, an inner protective layer, a middle protective layer, a reinforcing layer and an outer protective layer, wherein the tinned copper conductor is externally extruded with the ethylene propylene insulation layer to form a power wire core; the FEP control wire core is extruded outside the control wire core conductor to insulate, so as to form a control wire core; a plurality of control wire cores are twisted together, and are shielded by an aluminum-plastic composite belt wrapped outside to form a control wire core unit; extruding a semiconductive layer outside the ground wire conductor to form a ground wire core; extruding and wrapping ETFE loose tubes outside a plurality of optical fibers to form an optical fiber core; the optical fiber cores are stranded by taking the optical fiber reinforcing piece as a center to form an optical fiber unit; the Y-shaped semiconductive rubber core is internally provided with a central reinforcing piece, and a power wire core, a control wire core unit, a power wire core, an optical fiber unit, a power wire core and a ground wire core are sequentially arranged on the outer side of the Y-shaped semiconductive rubber core in a surrounding manner by taking the Y-shaped semiconductive rubber core as a center to form a port pressing machine cable wire core; the inner sheath, the middle sheath and the outer sheath are sequentially extruded from inside to outside, the middle sheath is internally provided with a reinforcing layer, and the inner sheath is of an integrated structure and is matched with the shape of the cable core of the harbor machine.
The shape of the Y-shaped semiconductive rubber core is composed of six arc sections, wherein each six arc sections comprises three large concave arc sections and three small concave arc sections, and the three large concave arc sections, the one small concave arc section, the one large concave arc section and the one small concave arc section are sequentially connected to form a Y-shaped structure; the three large concave arc sections are matched with the shape of the power wire core, and the three small concave arc sections are respectively matched with the shapes of the control wire core unit, the optical fiber unit and the ground wire core.
The reinforcing layer is formed by aramid fiber and a woven net.
The outer protective layer is made of a high-strength CPE material and has excellent wear resistance.
The manufacturing method of the medium-voltage harbor machine cable for dragging the composite three-layer sheath adopts any one of the harbor machine cables and comprises the following steps:
(1) extruding ethylene propylene insulation outside the tin-plated copper conductor to form a power wire core;
(2) the FEP control wire core is extruded outside the control wire core conductor to insulate, so as to form a control wire core; a plurality of control wire cores are twisted together, and are shielded by an aluminum-plastic composite belt wrapped outside to form a control wire core unit;
(3) extruding a semiconductive layer outside the ground wire conductor to form a ground wire core;
(4) extruding and wrapping ETFE loose tubes outside a plurality of optical fibers to form an optical fiber core; the optical fiber cores are stranded by taking the optical fiber reinforcing piece as a center to form an optical fiber unit;
(5) when the Y-shaped semi-conductive rubber core is extruded through a Y-shaped die, the end part of the die core and the end part of the die sleeve are adjusted and leveled, so that the Y-shaped semi-conductive rubber core is extruded along the space between the die core and the die sleeve, and a central reinforcing piece is added in the middle of the die core, so that the extruded Y-shaped semi-conductive rubber core tightly covers the central reinforcing piece; after the Y-shaped semiconductive rubber core is extruded, semi-vulcanization state treatment is carried out in a vulcanizing tank, and the general steam pressure is controlled to be 0.3-0.4MPa, and the time is 30min, so that the basic shape of the Y-shaped semiconductive rubber core is fixed;
(6) the method comprises the steps that a power wire core, a control wire core unit, a power wire core, an optical fiber unit, a power wire core and a ground wire core are sequentially arranged on the outer side of a Y-shaped semi-conductive rubber core in a surrounding mode by taking the semi-conductive rubber core as a center to form a port pressing machine cable wire core, and an inner protective layer, a middle protective layer and an outer protective layer are sequentially extruded from inside to outside of the port pressing machine cable wire core;
(7) the inner protective layer in the step (6) is directly extruded by a die and is matched with the shape of the cable core of the port pressing machine;
(8) the middle protective layer in the step (6) is a mixture of rubber and chloroprene rubber, the middle protective layer is extruded outside the inner protective layer, the middle protective layer is extruded twice, after the inner layer of the middle protective layer is extruded, a reinforcing layer is added outside the inner layer, then the outer layer of the middle protective layer is extruded, and the inner layer and the outer layer of the middle protective layer are tightly adhered with the reinforcing layer to form a whole.
The invention has the positive effects that: 1. multiple cable functions are combined into one cable, so that the cable space is saved; 2. the three-layer sheath structure increases the reliability of the cable by the division of different sheaths. 3. The Y-shaped semiconductive rubber core is directly extruded by using the die, so that the cable structure is more reasonable and stable.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a passivation layer according to the present invention;
FIG. 3 is a schematic view of the Y-type die sleeve structure of the present invention;
FIG. 4 is a schematic view of the end face of the Y-type die sleeve according to the present invention;
FIG. 5 is a schematic view of a Y-type mold core structure of the present invention;
FIG. 6 is a schematic diagram of a Y-type mold structure according to the present invention;
FIG. 7 is a schematic view of the end structure of a Y-type die of the present invention;
FIG. 8 is a schematic diagram of the structure of a finished Y-shaped semiconductive rubber core of the present invention;
in the figure: tin-plated copper conductor 1, ethylene propylene insulation 2, control wire core conductor 3, FEP control wire core insulation 4, aluminum plastic composite tape shielding 5, Y-shaped semi-conductive rubber core 6, central reinforcement 7, ground wire conductor 8, semi-conductive layer 9, optical fiber 10, ETFE loose tube 11, optical fiber reinforcement 12, inner protection layer 13, middle protection layer 14, reinforcement layer 15, outer protection layer 16, mold core end 17, mold sleeve end 18, mold core 19 and mold sleeve 20.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
the utility model provides a compound three-layer sheath drags and uses middling pressure port machine cable, contains tinned copper conductor 1, ethylene-propylene insulation 2, control core conductor 3, FEP control core insulation 4, plastic-aluminum composite tape shielding 5, Y shape semiconductive rubber core 6, center reinforcement 7, ground wire conductor 8, semiconductive layer 9, optic fibre 10, ETFE loose tube 11, optic fibre reinforcement 12, interior sheath 13, well sheath 14, enhancement layer 15 and outer sheath 16, tin-coated copper conductor 1 crowded package ethylene-propylene insulation 2 outside constitutes the power core; the FEP control wire core insulation 4 is extruded outside the control wire core conductor 3 to form a control wire core; a plurality of control wire cores are twisted together, and an aluminum-plastic composite belt shield 5 is wrapped outside the control wire cores to form a control wire core unit; the ground wire conductor 8 is externally extruded with a semiconductive layer 9 to form a ground wire core; the ETFE loose tubes 11 are extruded outside the optical fibers 10 to form an optical fiber core; the optical fiber cores are stranded by taking the optical fiber reinforcing piece 12 as a center to form an optical fiber unit; the Y-shaped semiconductive rubber core 6 is internally provided with a central reinforcing piece 7, and a power wire core, a control wire core unit, a power wire core, an optical fiber unit, a power wire core and a ground wire core are sequentially arranged on the outer side of the Y-shaped semiconductive rubber core 6 in a surrounding manner by taking the Y-shaped semiconductive rubber core 6 as the center to form a port pressing machine cable wire core; the inner sheath 13, the middle sheath 14 and the outer sheath 16 are sequentially extruded from inside to outside, the middle sheath 14 contains a reinforcing layer 15, and the inner sheath 13 is of an integrated structure and is matched with the shape of the cable core of the port pressing machine.
The shape of the Y-shaped semiconductive rubber core 6 is composed of six arc sections, wherein the six arc sections comprise three large concave arc sections and three small concave arc sections, and the three large concave arc sections, the one small concave arc section, the one large concave arc section and the one small concave arc section are sequentially connected to form a Y-shaped structure; the three large concave arc sections are matched with the shape of the power wire core, and the three small concave arc sections are respectively matched with the shapes of the control wire core unit, the optical fiber unit and the ground wire core.
The reinforcing layer 15 is an aramid fiber plus a woven net.
The outer sheath 16 is made of a high strength CPE material.
The manufacturing method of the medium-voltage harbor machine cable for dragging the composite three-layer sheath adopts any one of the harbor machine cables and comprises the following steps:
(1) extruding ethylene-propylene insulation 2 outside the tin-plated copper conductor 1 to form a power wire core;
(2) the FEP control wire core insulation 4 is extruded outside the control wire core conductor 3 to form a control wire core; 7 control wire cores are twisted together, and an aluminum-plastic composite belt shielding 5 is wrapped outside the control wire cores to form a control wire core unit;
(3) extruding a semiconductive layer 9 outside the ground wire conductor 8 to form a ground wire core;
(4) extruding ETFE loose tubes 11 outside 3-6 optical fibers 10 to form an optical fiber core; the 6 optical fiber cores are stranded by taking the optical fiber reinforcing piece 12 as a center to form an optical fiber unit;
the power wire core, the optical fiber unit and the control wire core unit are electric power transmission, communication and control cables with three functions;
(5) the Y-shaped semiconductive rubber core 6 is extruded through a Y-shaped die, when the Y-shaped semiconductive rubber core 6 is extruded, the end part 17 of the die core and the end part 18 of the die sleeve are adjusted to be flush, so that the Y-shaped semiconductive rubber core 6 is extruded along the space between the die core 19 and the die sleeve 20, 7 aramid ropes are added in the middle of the die core 19, the extruded Y-shaped semiconductive rubber core 6 tightly covers the 7 aramid ropes, and the Y-shaped semiconductive rubber core 6 has the filling effect and the reinforcing effect and ensures the tensile strength of the whole cable during operation; the Y-shaped semi-conductive rubber core 6 is extruded and then is subjected to semi-vulcanization state treatment in a vulcanizing tank, the steam pressure is controlled to be 0.3-0.4MPa generally, the time is 30min, the basic shape of the Y-shaped semi-conductive rubber core 6 is fixed, in the subsequent processing process, the Y-shaped semi-conductive rubber core 6 changes according to the semi-vulcanization state of the Y-shaped semi-conductive rubber core 6 when the wire core is cabled, the contact between the wire core and the Y-shaped semi-conductive rubber core 6 is ensured to be tighter, and the cable structure is more stable;
(6) the method comprises the steps that a power wire core, a control wire core unit, a power wire core, an optical fiber unit, a power wire core and a ground wire core are sequentially arranged on the outer side of a Y-shaped semi-conductive rubber core 6 in a surrounding mode by taking the Y-shaped semi-conductive rubber core 6 as a center to form a port-pressing machine cable wire core, and the port-pressing machine cable wire core sequentially extrudes an inner protection layer 13, a middle protection layer 14 and an outer protection layer 16 from inside to outside;
(7) the inner protective layer 13 in the step (6) is directly extruded by a die and is matched with the shape of the cable core of the port pressing machine;
(8) the middle protective layer 14 in the step (6) is a mixture of rubber and chloroprene rubber, the middle protective layer 14 is extruded outside the inner protective layer 13, wherein the middle protective layer 14 is extruded twice, after the inner layer of the middle protective layer 14 is extruded, a reinforcing layer 15 is added outside the inner layer, then the outer layer of the middle protective layer is extruded, and the inner layer and the outer layer of the middle protective layer are tightly adhered with the reinforcing layer to form a whole.
The three-layer sheath designs the cable sheath structure according to the towing use condition, ensures the cable structure to be stable, and prolongs the service life of the cable. Wherein the inner sheath plays a role in filling, the middle sheath plays a role in bonding the inner sheath, the outer sheath and the aramid fiber reinforcing layer, and the outer sheath plays a role in wear resistance.
The radian of the Y-shaped mold is designed according to the outer diameters of different cable insulation wire cores (as shown in figures 3 and 5), so that the radian of the extruded Y-shaped semiconductive rubber core 6 is the same as that of the outer surfaces of the wire cores, and the wire cores are in tight contact after being cabled. Meanwhile, when the Y-shaped die is designed, the arc-shaped design is adopted, the pressure is more uniform when the rubber core is extruded, meanwhile, the arc-shaped space is larger, and the end part of the die core and the end part of the die sleeve can be arranged on the same plane during production, so that the eccentric adjustment of production is more facilitated.
Claims (3)
1. The utility model provides a compound three-layer sheath drags with well harbor machine cable which characterized in that: the power cable comprises a tin-plated copper conductor (1), an ethylene propylene insulation layer (2), a control cable core conductor (3), an FEP control cable core insulation layer (4), an aluminum plastic composite tape shielding layer (5), a Y-shaped semi-conductive rubber core (6), a central reinforcing piece (7), a ground wire conductor (8), a semi-conductive layer (9), an optical fiber (10), an ETFE loose tube (11), an optical fiber reinforcing piece (12), an inner protection layer (13), a middle protection layer (14), a reinforcing layer (15) and an outer protection layer (16), wherein the tin-plated copper conductor (1) is externally extruded with the ethylene propylene insulation layer (2) to form a power cable core; the FEP control wire core insulation (4) is extruded outside the control wire core conductor (3) to form a control wire core; a plurality of control wire cores are twisted together, and an aluminum-plastic composite belt shielding (5) is wrapped outside the control wire cores to form a control wire core unit; a semiconductive layer (9) is extruded outside the ground wire conductor (8) to form a ground wire core; extruding ETFE loose tubes (11) outside a plurality of optical fibers (10) to form an optical fiber core; the optical fiber cores are stranded by taking the optical fiber reinforcing piece (12) as the center to form an optical fiber unit; a central reinforcing piece (7) is arranged in the Y-shaped semiconductive rubber core (6), and a power wire core, a control wire core unit, a power wire core, an optical fiber unit, a power wire core and a ground wire core are sequentially arranged around the outer side of the Y-shaped semiconductive rubber core (6) by taking the Y-shaped semiconductive rubber core (6) as the center to form a port pressing machine cable wire core; the inner sheath (13), the middle sheath (14) and the outer sheath (16) are sequentially extruded from inside to outside, the middle sheath (14) contains a reinforcing layer (15), and the inner sheath (13) is of an integrated structure and is matched with the shape of the cable core of the port pressing machine; the reinforcing layer (15) is formed by adding a woven mesh into aramid fibers; the outer sheath (16) is made of a high strength CPE material.
2. The composite three-layer sheath trailing medium voltage port machine cable of claim 1, wherein:
the appearance of the Y-shaped semiconductive rubber core (6) is composed of six arc sections, each six arc sections comprises three large concave arc sections and three small concave arc sections, and each large concave arc section, each small concave arc section, each large concave arc section and each small concave arc section are sequentially connected to form a Y-shaped structure; the three large concave arc sections are matched with the power wire core in shape, and the three concave arc sections are respectively matched with the control wire core unit, the optical fiber unit and the ground wire core in shape.
3. A method for manufacturing a composite three-layer sheath towing medium voltage harbor machine cable, which adopts the composite three-layer sheath towing medium voltage harbor machine cable according to claim 1 or 2, and is characterized by comprising the following steps:
extruding ethylene-propylene insulation (2) outside the tin-plated copper conductor (1) to form a power wire core;
the FEP control wire core insulation (4) is extruded outside the control wire core conductor (3) to form a control wire core; a plurality of control wire cores are twisted together, and an aluminum-plastic composite belt shielding (5) is wrapped outside the control wire cores to form a control wire core unit;
extruding a semiconductive layer (9) outside the ground wire conductor (8) to form a ground wire core;
extruding ETFE loose tubes (11) outside a plurality of optical fibers (10) to form an optical fiber core; the optical fiber cores are stranded by taking the optical fiber reinforcing piece (12) as the center to form an optical fiber unit;
when extruding the Y-shaped semiconductive rubber core (6) through a Y-shaped die, adjusting and leveling the end part (17) of the die core and the end part (18) of the die sleeve when extruding the Y-shaped semiconductive rubber core (6), extruding the Y-shaped semiconductive rubber core (6) along the space between the die core (19) and the die sleeve (20), and adding a central reinforcing piece (7) in the middle of the die core (19), so that the extruded Y-shaped semiconductive rubber core (6) tightly covers the central reinforcing piece (7); the Y-shaped semi-conductive rubber core (6) is extruded and then is treated in a semi-vulcanization state in a vulcanization tank, the steam pressure is controlled to be 0.3-0.4MPa, and the time is 30min, so that the shape of the Y-shaped semi-conductive rubber core (6) is fixed;
the method comprises the steps that a power wire core, a control wire core unit, a power wire core, an optical fiber unit, a power wire core and a ground wire core are sequentially arranged on the outer side of a Y-shaped semi-conductive rubber core (6) in a surrounding mode by taking the Y-shaped semi-conductive rubber core (6) as a center to form a port pressing machine cable wire core, and an inner protective layer (13), a middle protective layer (14) and an outer protective layer (16) are sequentially extruded from inside to outside of the port pressing machine cable wire core;
the inner protective layer (13) in the step (6) is directly extruded by a die and is matched with the shape of the cable core of the port pressing machine;
the middle protective layer (14) in the step (6) is a mixture of rubber and chloroprene rubber, the middle protective layer (14) is extruded outside the inner protective layer (13), the middle protective layer (14) is extruded twice, after the inner layer of the middle protective layer (14) is extruded, a reinforcing layer (15) is added outside the inner layer, then the outer layer of the middle protective layer is extruded, and the inner layer and the outer layer of the middle protective layer are tightly adhered with the reinforcing layer to form a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810359485.1A CN108597653B (en) | 2018-04-20 | 2018-04-20 | Medium-voltage port machine cable for dragging composite three-layer sheath and manufacturing method thereof |
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| CN201810359485.1A CN108597653B (en) | 2018-04-20 | 2018-04-20 | Medium-voltage port machine cable for dragging composite three-layer sheath and manufacturing method thereof |
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| CN108597653A CN108597653A (en) | 2018-09-28 |
| CN108597653B true CN108597653B (en) | 2023-10-20 |
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| CN109599205A (en) * | 2018-11-09 | 2019-04-09 | 安徽凌宇电缆科技有限公司 | A kind of intelligence engineering equipment uses optoelectronic composite cable |
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| JP5740817B2 (en) * | 2010-02-12 | 2015-07-01 | 日立金属株式会社 | High voltage cabtyre cable |
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2018
- 2018-04-20 CN CN201810359485.1A patent/CN108597653B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222543A (en) * | 2011-07-04 | 2011-10-19 | 江苏中煤电缆股份有限公司 | Jacket structure special for drum cable |
| CN202422804U (en) * | 2012-01-10 | 2012-09-05 | 江西电缆有限责任公司 | Flexible 6-kilovolt trailing cable for strip mine |
| CN202711742U (en) * | 2012-07-31 | 2013-01-30 | 上海上力电线电缆有限公司 | Strengthened type high-voltage reel cable |
| CN208027766U (en) * | 2018-04-20 | 2018-10-30 | 唐山华通特种线缆制造有限公司 | A kind of towing of composite three-layer sheath is overstocked a harbour electric cable in |
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| CN108597653A (en) | 2018-09-28 |
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