CN112164499A - Photoelectric composite medium-voltage shore power cable and manufacturing process thereof - Google Patents
Photoelectric composite medium-voltage shore power cable and manufacturing process thereof Download PDFInfo
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- CN112164499A CN112164499A CN202011065524.0A CN202011065524A CN112164499A CN 112164499 A CN112164499 A CN 112164499A CN 202011065524 A CN202011065524 A CN 202011065524A CN 112164499 A CN112164499 A CN 112164499A
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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
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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
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
- H01B7/0861—Flat or ribbon cables comprising one or more screens
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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
- H01B9/005—Power cables including optical transmission elements
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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
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
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Abstract
A photoelectric composite medium-voltage shore power cable comprises a cable core, an inner sheath layer, a reinforcing layer and an outer sheath layer which are sequentially arranged from inside to outside, wherein the inner sheath layer is wrapped outside the cable core, the reinforcing layer is wrapped outside the inner sheath layer, and the outer sheath layer is wrapped outside the reinforcing layer; the cable core includes three power sinle silks and flexible optical unit, three power sinle silks parallel contact is arranged and is the platykurtic, every adjacent two power sinle silks with form the clearance between the inner sheath layer, the embedding of flexible optical unit is in the clearance and with adjacent two power sinle silks contact. The present case still provides a photoelectric composite middling pressure shore connection cable manufacturing process, can provide higher electric energy transmission ability under the condition of realizing optical communication transmission function, reduces cable bend radius, promotes cable flexibility ability, promotes cable current-carrying capacity.
Description
Technical Field
The invention relates to the field of cables, in particular to a photoelectric composite medium-voltage shore power cable and a manufacturing process thereof.
Background
The greatest advantage of shipping over train or car transportation is the large load and low cost. In recent years, cargo throughput of various large coastal ports has been remarkably developed. The goods are loaded and unloaded by large-scale mobile loading and unloading equipment such as a crane, a gantry crane and a shore crane, and the shore power cable is required to provide higher electric energy transmission capability. The fuel products are generally used for generating electricity to meet the electricity demand of ships when ships are in a harbor, but heavy oil and diesel oil can produce a large amount of sulfides and nitrogen oxides in the combustion process to pollute the surrounding environment, and meanwhile, a diesel generator set used by the ships can also cause noise pollution to the environment in the running process, so that a shore power system is needed to avoid the use of the fuel products for generating electricity. Meanwhile, with the development of the digital intelligent monitoring communication function, the current shore power cable with a single function cannot meet the development requirement.
Disclosure of Invention
In view of this, it is necessary to provide a photoelectric composite medium-voltage shore power cable and a manufacturing process thereof, which can provide higher electric energy transmission capability, reduce the bending radius of the cable, improve the flexibility of the cable, and improve the current-carrying capability of the cable under the condition of realizing the optical communication transmission function.
One aspect of the application provides a photoelectric composite medium-voltage shore power cable, which comprises a cable core, an inner sheath layer, a reinforcing layer and an outer sheath layer, wherein the cable core, the inner sheath layer, the reinforcing layer and the outer sheath layer are sequentially arranged from inside to outside;
the cable core includes three power sinle silks and flexible optical unit, three power sinle silks parallel contact is arranged and is the platykurtic, every adjacent two power sinle silks with form the clearance between the inner sheath layer, the embedding of flexible optical unit is in the clearance and with adjacent two power sinle silks contact.
Preferably, the cable core further includes a flexible ground core, the flexible ground core and the flexible optical unit are respectively embedded in different gaps, and the flexible ground core is in contact with two adjacent power cores.
Preferably, the number of the flexible grounding wire cores is two, and the two flexible grounding wire cores are respectively embedded in different gaps formed between the two adjacent power wire cores and the inner sheath layer.
Preferably, each power wire core comprises a flexible power conductor core, a semi-conductive tape conductor shielding layer, a semi-conductive extruded conductor shielding layer, a high-electrical-property rubber insulating layer, a semi-conductive extruded insulating shielding layer, a semi-conductive tape insulating shielding layer and a multi-strand metal wire braided flexible insulating shielding layer which are sequentially arranged from inside to outside.
Preferably, the flexible power conductor core adopts the technology of conductor equidirectional group twisting and integral compound twisting.
Preferably, the flexible grounding wire core comprises a flexible grounding conductor core and a semi-conductive rubber insulating layer which are sequentially arranged from inside to outside, and the semi-conductive rubber insulating layer is in contact with two adjacent power wire cores.
Preferably, the inner sheath layer is a flame-retardant thermoplastic elastomer inner sheath layer, the reinforcing layer is a flexible high-strength fiber woven reinforcing layer, and the outer sheath layer is an oil-resistant flame-retardant outer sheath layer.
Preferably, the flexible optical unit comprises a high-temperature-resistant single-mode/multi-mode optical fiber, a flexible high-strength fiber reinforced core and a flame-retardant thermoplastic sheath layer.
Preferably, the cable core further comprises a flexible control wire core unit, the flexible grounding wire core and the flexible light unit are respectively embedded in different gaps, and the flexible control wire core unit is in contact with two adjacent power wire cores.
Preferably, the flexible control wire core unit comprises a flexible control conductor core, a flexible rubber insulating layer and an aluminum-plastic composite tape wrapping shielding layer.
Another aspect of the present application provides a photovoltaic composite medium voltage shore power cable manufacturing process, comprising:
providing three power wire cores;
the three power wire cores are arranged in parallel contact and are in a flat structure;
the flexible optical unit is embedded in a gap formed by two adjacent power wire cores and is in contact with the two adjacent power wire cores;
extruding and coating a flame-retardant thermoplastic elastomer on the surface of a flat structure formed by the three power wire cores and the flexible optical unit to form an inner sheath layer;
weaving flexible high strength fibers over the inner jacket layer to form a reinforcement layer;
and extruding and coating an oil-resistant flame-retardant material on the reinforcing layer to form an outer sheath layer.
This case is through three power sinle silk parallel contact arranges and is the platykurtic, every adjacent two power sinle silk with form the clearance between the inner sheath layer, flexible light unit embedding in the clearance and with adjacent two power sinle silk contact can provide higher electric energy transmission ability under the condition that realizes optical communication transmission function, reduces cable bend radius, promotes cable flexibility ability, promotes cable current-carrying capacity.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a photovoltaic composite medium-voltage shore power cable according to a preferred embodiment of the present invention.
Fig. 2 is a flow chart of a manufacturing process of the photovoltaic composite medium-voltage shore power cable according to a preferred embodiment of the present invention.
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Description of the main elements
Photoelectric composite medium-voltage shore power cable 1
Reinforcing layer 30
Power wire core 11
Flexible light unit 12
Flexible earth core 13
Flexible power conductor core 111
Semi-conductive tape conductor shield 112
Semiconductive extruded conductor shield layer 113
High electrical performance rubber insulation layer 114
Semiconductive extruded insulation shield 115
Semiconductive tape insulation shield 116
Metal wire braided flexible insulation shield 117
Semiconductive rubber insulation layer 132
High temperature resistant single mode/multimode optical fiber 121
Flexible high strength fiber reinforced core 122
Flame-retardant thermoplastic sheath layer 123
Flexible control wire core unit 14
Control conductor core 141
Flexible rubber insulation layer 142
Aluminum-plastic composite tape lapping shielding layer 143
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a detailed description of the present invention will be given below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Fig. 1 is a schematic diagram of a photovoltaic composite medium-voltage shore power cable according to a preferred embodiment of the present invention. Photoelectric composite middling pressure shore connection cable 1 includes cable core 10, inner sheath layer 20, enhancement layer 30 and the oversheath layer 40 that sets gradually from inside to outside, inner sheath layer 20 parcel is in the outside of cable core 10, enhancement layer 30 parcel is in the outside of inner sheath layer 20, oversheath layer 40 parcel is in the outside of enhancement layer 30. The cable core 10 comprises three power wire cores 11 and flexible optical units 12, wherein the three power wire cores 11 are arranged in parallel contact and are flat, every two adjacent power wire cores 11 and a gap 110 is formed between the inner sheath layer 20, and the flexible optical units 12 are embedded in the gap 110 and are in contact with the two adjacent power wire cores 11.
In this embodiment, the cable core 10 further comprises a flexible ground core 13. The flexible light unit 12 and the flexible ground wire core 13 are respectively embedded in the different gaps 110, and the flexible ground wire core 13 is in contact with two adjacent power wire cores 11. The present case can reduce cable bending radius, promotes cable flexibility ability, promotes cable current-carrying capacity under the circumstances of realizing the ground connection function.
In this embodiment, the number of the flexible ground wire cores 13 is two, that is, the flexible ground wire is a two-core ground wire. The two flexible grounding wire cores 13 are respectively embedded in different gaps 110 formed between different adjacent two power wire cores 11 and the inner sheath layer 20. The scheme can avoid the large size of a single grounding wire core, and does not increase the overall dimension of the photoelectric composite medium-voltage shore power cable 1.
In this embodiment, each power wire core 11 includes, sequentially from inside to outside, a flexible power conductor core 111, a semiconductive tape conductor shielding layer 112, a semiconductive extruded conductor shielding layer 113, a high-electrical-performance rubber insulating layer 114, a semiconductive extruded insulating shielding layer 115, a semiconductive tape insulating shielding layer 116, and a multi-strand metal wire braided flexible insulating shielding layer 117. The semi-conductive tape conductor shielding layer 112 and the semi-conductive extruded conductor shielding layer 113 form a combined conductor shielding structure, so that the uniformity of electric field distribution on the surface of the power conductor core is improved. The semi-conductive extruded insulation shielding layer 115 is extruded and tightly attached to the outer surface of the high-electrical-property rubber insulation layer 114, so that the uniformity of electric field distribution on the outer surface of the high-electrical-property rubber insulation layer 114 is improved. The semiconductive extruded conductor shielding layer 113, the high-electrical-property rubber insulating layer 114 and the semiconductive extruded insulating shielding layer 115 adopt three-layer co-extrusion and continuous online crosslinking technologies, so that the concentricity and the crosslinking uniformity of the semiconductive extruded conductor shielding layer 113, the high-electrical-property rubber insulating layer 114 and the uniformity and the stability of electric field distribution in the high-electrical-property rubber insulating layer are fully guaranteed. The semi-conductive tape insulation shielding layer 116 and the metal wire braided flexible insulation shielding layer 117 are in full contact, and together with the semi-conductive extruded insulation shielding layer 115, an insulation outer shielding layer is formed, so that the uniformity of electric field distribution on the outer surface of the high-electrical-property rubber insulation layer 114 and good induced current conductivity are fully ensured.
In this embodiment, the flexible power conductor core 111 comprises a stranded flexible copper wire conductor. The flexible power conductor core 111 adopts the conductor equidirectional grouping twisting and integral compound twisting technology. In this embodiment, the flexible power conductor core 111 adopts a 5-class annealing oxygen-free copper wire equidirectional grouping back-twist twisting and integral back-twist compound twisting technology, and the twisting pitch is controlled to be between 10 and 15 times of the outer diameter of the conductor. According to the scheme, the internal stress of the photoelectric composite medium-voltage shore power cable 1 is effectively eliminated through a full back-twist twisting mode of grouping back-twist twisting and overall back-twist twisting, the twisting phenomenon of a finished product is avoided, and the wire core arrangement and the overall flatness of the cable are improved.
The semi-conductive tape conductor shielding layer 112 adopts an overlapping wrapping structure, and the overall average thickness is about 0.1-0.3 mm. The semiconductive extruded conductor shielding layer 113 is extruded by an extrusion technique, and has a thickness of about 0.6-1.0 mm. The high-electrical-property Rubber insulating layer 114 is made of an Ethylene Propylene Rubber (EPR) insulating material, and has the characteristics of high electrical property, softness, low smoke, no halogen and the like. The semiconductive extruded insulation shielding layer 115 is made of a strippable semiconductive layer conductive material, and the thickness of the strippable semiconductive layer conductive material is about 0.8-1.2 mm. The semi-conductive band insulation shielding layer 116 adopts an overlapping wrapping structure, and the overall average thickness is about 0.1-0.3 mm. The flexible insulating shielding layer 117 is braided by the multiple metal wires, and the braiding coverage density is more than or equal to 90% by adopting a multiple flexible tinned copper wire braiding technology.
In this embodiment, the flexible ground core 13 includes a ground conductor core 131 and a semi-conductive rubber insulation layer 132 arranged in sequence from inside to outside. The semi-conductive rubber insulating layer 132 is in contact with the two adjacent power wire cores 11. In this embodiment, the grounding conductor core 131 adopts a 5-class annealing oxygen-free copper wire unidirectional grouped twisting and integral compound twisting technology, and the twisting pitch is controlled to be 10-15 times of the outer diameter of the conductor. The conductive connection between the flexible grounding wire core 13 and the metal wire braided flexible insulating shielding layer 117 is facilitated through the semiconductor conductivity of the semiconductive rubber insulating layer 132.
In this embodiment, the inner sheath layer 20 is a flame retardant thermoplastic elastomer inner sheath layer, the reinforcement layer 30 is a flexible high strength fiber woven reinforcement layer, and the outer sheath layer 40 is an oil resistant flame retardant outer sheath layer. The inner sheath layer of the flame-retardant thermoplastic elastomer is extruded outside the braided shielding layers of the 3 insulation wire cores which are arranged in parallel in a flat shape, and the thickness of the extruded shielding layers is at least 0.8-1.2 mm for fully coating and protecting the wire cores. The flexible high-strength fiber braided reinforcing layer adopts a multi-strand flexible high-strength fiber braided structure, and the braided covering density is more than or equal to 60%. The oil-resistant flame-retardant outer sheath layer is extruded outside the flexible high-strength fiber woven reinforcing layer, and the extrusion thickness is at least 1.0-1.4 mm. In this embodiment, if the photovoltaic composite medium-voltage shore power cable 1 is a thermosetting sheathed cable, the entire photovoltaic composite medium-voltage shore power cable 1 needs to be continuously vulcanized by high-temperature steam uniformly, so that the outer sheath material can be grafted and crosslinked sufficiently. The semiconductive tape conductor shielding layer 112, the semiconductive extruded conductor shielding layer 113, the high-electrical-performance rubber insulating layer 114, the semiconductive extruded insulating shielding layer 115, the semiconductive tape insulating shielding layer 116, the flame-retardant thermoplastic elastomer inner sheath layer, the flexible high-strength fiber braided reinforcing layer and the oil-resistant flame-retardant outer sheath layer are all made of non-metallic materials, and the photoelectric composite medium-voltage shore power cable 1 has flame-retardant performance.
In this embodiment, the flexible optical unit 12 includes a high temperature resistant single mode/multi-mode optical fiber 121, a flexible high strength fiber reinforced core 122, and a flame retardant thermoplastic sheath layer 123. The semiconductive tape conductor shielding layer 112, the semiconductive extruded conductor shielding layer 113, the high-electrical performance rubber insulating layer 114, the semiconductive extruded insulation shielding layer 115, the semiconductive tape insulation shielding layer 116, the flame-retardant thermoplastic elastomer inner sheath layer, the flexible high-strength fiber braided reinforcing layer, the oil-resistant flame-retardant outer sheath layer, the semiconductive rubber insulating layer 132, the flexible high-strength fiber reinforcing core 122 and the flame-retardant thermoplastic sheath layer 123 are all made of non-metallic materials, so that the photoelectric composite medium-voltage shore power cable 1 integrally has flame-retardant performance.
In this embodiment, the cable core 10 further includes a flexible control core unit 14, the flexible optical unit 12, the flexible ground core 13 and the flexible control core unit 14 are respectively embedded in the different gaps 110, and the flexible control core unit 14 is in contact with two adjacent power cores 11. The case can reduce the bending radius, promotes the flexibility ability, promotes the current-carrying ability under the circumstances that realizes control signal transmission function.
In this embodiment, the flexible control wire core unit 14 includes a control conductor core 141, a flexible rubber insulation layer 142, and an aluminum-plastic composite tape wrapping shielding layer 143. The control conductor core 141 adopts a conductor multi-strand untwisting twisting technology. In the embodiment, the control conductor core 141 adopts a 5-class annealing anaerobic copper wire multistrand untwisting twisting technology, and the twisting pitch is controlled between 10 and 15 times of the outer diameter of the conductor. The semiconductive tape conductor shielding layer 112, the semiconductive extruded conductor shielding layer 113, the high-electrical performance rubber insulating layer 114, the semiconductive extruded insulation shielding layer 115, the semiconductive tape insulation shielding layer 116, the flame-retardant thermoplastic elastomer inner sheath layer, the flexible high-strength fiber braided reinforcing layer, the oil-resistant flame-retardant outer sheath layer, the semiconductive rubber insulating layer 132, the flexible high-strength fiber reinforcing core 122, the flame-retardant thermoplastic sheath layer 123, the flexible rubber insulating layer 142 and the aluminum-plastic composite tape are all made of non-metallic materials around the outer sheath layer 143, so that the photoelectric composite medium-voltage shore power cable 1 with the flexible control wire core unit 14 has flame-retardant performance.
Fig. 2 is a flow chart of a manufacturing process of the photovoltaic composite medium-voltage shore power cable according to a preferred embodiment of the present invention. The manufacturing process of the photoelectric composite medium-voltage shore power cable comprises the following steps:
s21: three power wire cores are provided.
S22: the three power wire cores are arranged in parallel contact and are in a flat structure.
S23: the flexible light unit is embedded in a gap formed by two adjacent power wire cores and is in contact with the two adjacent power wire cores.
S24: and extruding and coating a flame-retardant thermoplastic elastomer on the surface of a flat structure formed by the three power wire cores and the flexible optical unit to form an inner sheath layer.
S25: weaving flexible high strength fibers over the inner jacket layer to form a reinforcement layer.
S26: and extruding and coating an oil-resistant flame-retardant material on the reinforcing layer to form an outer sheath layer.
In this embodiment, the manufacturing process of the photovoltaic composite medium-voltage shore power cable includes:
providing a high temperature resistant single mode/multimode optical fiber;
winding flexible high-strength fibers on the surface of the high-temperature-resistant single-mode/multi-mode optical fiber to form a flexible high-strength fiber reinforced core;
and extruding and wrapping a flame-retardant thermoplastic sheath on the surface of the flexible high-strength fiber reinforced core to form a flame-retardant thermoplastic sheath layer.
In this embodiment, the flexible optical unit is embedded in a gap formed between two adjacent power wire cores, and the contacting with the two adjacent power wire cores includes:
the flexible grounding wire core and the flexible optical unit are respectively embedded in different gaps formed by any two adjacent power wire cores in the three power wire cores, and the flexible grounding wire core and the flexible optical unit are in contact with the two power wire cores which are correspondingly adjacent;
the extrusion coating of a sheath on the surface of the flat structure formed by the three power wire cores and the flexible optical unit to form an inner sheath layer comprises the following steps:
and extruding a sheath on the surface of a flat structure formed by the three power wire cores, the flexible light unit and the flexible grounding wire core to form an inner sheath layer.
In this embodiment, the manufacturing process of the photovoltaic composite medium-voltage shore power cable includes:
the two flexible grounding wire cores are respectively embedded in different gaps formed by two different adjacent power wire cores.
In this embodiment, the manufacturing process of the photovoltaic composite medium-voltage shore power cable includes:
providing a flexible power wire core;
winding a semi-conductive shielding belt on the surface of the flexible power line core conductor to form a semi-conductive conductor shielding layer;
extruding a semiconducting shield layer on the surface of the semiconducting shield layer to form a semiconducting shield layer;
extruding and coating high-electrical-property rubber insulation on the surface of the semi-conductive conductor shielding layer to form a high-electrical-property rubber insulation layer;
extruding a semi-conductive insulation shield on the surface of the high-electrical-performance rubber insulation layer to form a semi-conductive insulation shield layer;
wrapping a semi-conductive shielding belt on the surface of the semi-conductive insulating shielding layer to form a semi-conductive insulating shielding layer;
and weaving flexible metal wires on the surface of the semi-conductive insulation shielding layer to form a multi-strand metal wire woven flexible insulation shielding layer.
In this embodiment, the manufacturing process of the photovoltaic composite medium-voltage shore power cable includes:
providing a flexible ground wire core;
and extruding a semi-conductive rubber insulation layer on the surface of the flexible ground wire core conductor to form a semi-conductive rubber insulation layer, wherein the semi-conductive rubber insulation layer is in contact with two adjacent power wire cores.
In this embodiment, the flexible optical unit is embedded in a gap formed between two adjacent power wire cores, and the contacting with the two adjacent power wire cores includes:
the flexible control wire core unit, the flexible grounding wire core and the flexible optical unit are respectively embedded into different gaps formed by any two adjacent power wire cores of the three power wire cores, and the flexible control wire core unit, the flexible grounding wire core and the flexible optical unit are in contact with the two power wire cores which are correspondingly adjacent;
the extrusion coating of a sheath on the surface of the flat structure formed by the three power wire cores and the flexible optical unit to form an inner sheath layer comprises the following steps:
and extruding a sheath on the surface of a flat structure formed by the three power wire cores, the flexible light unit, the flexible grounding wire core and the flexible control wire core unit to form an inner sheath layer.
In this embodiment, the manufacturing process of the photovoltaic composite medium-voltage shore power cable includes:
providing a flexible control unit;
the surface of the flexible control unit wire core conductor is extruded with flexible rubber insulation to form a flexible rubber insulation layer;
and wrapping the surface of the flexible rubber insulating layer with an aluminum-plastic composite shielding tape to form an aluminum-plastic composite tape wrapping shielding layer.
The manufacturing process of the photoelectric composite medium-voltage shore power cable may be other modifications, and please refer to the description of the photoelectric composite medium-voltage shore power cable in fig. 1 for details, which are not described herein.
This case is through three 11 parallel contact arrangements of power sinle silk and be the platykurtic, every adjacent two 11 formation clearances 110 of power sinle silk, flexible light unit 12 embedding in clearance 110 and with adjacent two 11 contacts of power sinle silk, just flexible light unit 12 and three 11 formation platykurtic structures of power sinle silk can provide higher electric energy transmission ability under the condition that realizes optical communication transmission function, reduce cable bend radius, promote cable flexibility, promote cable current-carrying capacity. The flexible performance of the cable is further improved through the flexible power conductor core 111, the high-electrical-performance rubber insulating layer 114, the flame-retardant thermoplastic elastomer inner sheath layer, the metal wire braided flexible insulating shielding layer 117 and the flexible high-strength fiber braided reinforcing layer.
The flame retardant property of the photoelectric composite medium-voltage shore power cable 1 can meet the requirements that the cable is tightly arranged in bundles according to the actual laying condition, the content of nonmetal in each meter is more than 7 liters, the flame temperature is 800 ℃, and the burning height of the cable is not more than 2.5 meters after burning for 40 minutes; the oil resistance can meet the requirement that the surface strength change rate and the elongation change rate of the cable sheath do not exceed 35 percent after the IRM902 mineral oil is subjected to an oil resistance test for 24 hours at 100 ℃; the low smoke performance can meet the requirement of 60 percent of minimum light transmittance; the halogen-free performance can meet the requirements that the content of acid gas generated by combustion is less than or equal to 0.5 percent, the content of fluorine is less than or equal to 0.1 percent, the pH value is more than or equal to 4.3, and the conductivity is less than or equal to 10 microsiemens/millimeter.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a compound medium voltage shore connection cable of photoelectricity which characterized in that:
the photoelectric composite medium-voltage shore power cable comprises a cable core, an inner sheath layer, a reinforcing layer and an outer sheath layer which are sequentially arranged from inside to outside, wherein the inner sheath layer is wrapped outside the cable core, the reinforcing layer is wrapped outside the inner sheath layer, and the outer sheath layer is wrapped outside the reinforcing layer;
the cable core includes three power sinle silks and flexible optical unit, three power sinle silks parallel contact is arranged and is the platykurtic, every adjacent two power sinle silks with form the clearance between the inner sheath layer, the embedding of flexible optical unit is in the clearance and with adjacent two power sinle silks contact.
2. The photovoltaic composite medium voltage shore power cable according to claim 1, characterized in that: the cable core further comprises a flexible grounding wire core, the flexible grounding wire core and the flexible optical unit are respectively embedded into different gaps, and the flexible grounding wire core is in contact with the two adjacent power wire cores.
3. The photovoltaic composite medium voltage shore power cable according to claim 2, characterized in that: the number of the flexible grounding wire cores is two, and the two flexible grounding wire cores are respectively embedded into different gaps formed between the two adjacent power wire cores and the inner sheath layer.
4. The photovoltaic composite medium voltage shore power cable according to claim 2, characterized in that: each power wire core comprises a flexible power conductor core, a semi-conductive tape conductor shielding layer, a semi-conductive extruded conductor shielding layer, a high-electrical-property rubber insulating layer, a semi-conductive extruded insulating shielding layer, a semi-conductive tape insulating shielding layer and a multi-strand metal wire braided flexible insulating shielding layer which are sequentially arranged from inside to outside.
5. The photovoltaic composite medium voltage shore power cable according to claim 4, characterized in that: the flexible grounding wire core comprises a flexible grounding conductor core and a semi-conductive rubber insulating layer which are sequentially arranged from inside to outside, and the semi-conductive rubber insulating layer is in contact with the two adjacent power wire cores.
6. The photovoltaic composite medium voltage shore power cable according to claim 5, characterized in that: the inner sheath layer is a flame-retardant thermoplastic elastomer inner sheath layer, the reinforcing layer is a flexible high-strength fiber woven reinforcing layer, and the outer sheath layer is an oil-resistant flame-retardant outer sheath layer.
7. The photovoltaic composite medium voltage shore power cable according to claim 6, characterized in that: the flexible optical unit comprises a high-temperature-resistant single-mode/multi-mode optical fiber, a flexible high-strength fiber reinforced core and a flame-retardant thermoplastic sheath layer.
8. The photovoltaic composite medium voltage shore power cable of claim 7, characterized in that: the cable core further comprises a flexible control wire core unit, the flexible grounding wire core and the flexible light unit are respectively embedded into different gaps, and the flexible control wire core unit is in contact with two adjacent power wire cores.
9. The photovoltaic composite medium voltage shore power cable of claim 8, characterized in that: the flexible control wire core unit comprises a flexible control conductor core, a flexible rubber insulating layer and an aluminum-plastic composite tape wrapping shielding layer.
10. A manufacturing process of a photoelectric composite medium-voltage shore power cable is characterized by comprising the following steps:
providing three power wire cores;
the three power wire cores are arranged in parallel contact and are in a flat structure;
the flexible optical unit is embedded in a gap formed by two adjacent power wire cores and is in contact with the two adjacent power wire cores;
extruding and coating a flame-retardant thermoplastic elastomer on the surface of a flat structure formed by the three power wire cores and the flexible optical unit to form an inner sheath layer;
weaving flexible high strength fibers over the inner jacket layer to form a reinforcement layer;
and extruding and coating an oil-resistant flame-retardant material on the reinforcing layer to form an outer sheath layer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011065524.0A CN112164499A (en) | 2020-09-30 | 2020-09-30 | Photoelectric composite medium-voltage shore power cable and manufacturing process thereof |
| PCT/CN2020/133612 WO2022068037A1 (en) | 2020-09-30 | 2020-12-03 | Photoelectric composite medium-voltage shore power cable, and manufacturing process therefor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011065524.0A CN112164499A (en) | 2020-09-30 | 2020-09-30 | Photoelectric composite medium-voltage shore power cable and manufacturing process thereof |
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| CN112164499A true CN112164499A (en) | 2021-01-01 |
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| CN202011065524.0A Pending CN112164499A (en) | 2020-09-30 | 2020-09-30 | Photoelectric composite medium-voltage shore power cable and manufacturing process thereof |
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| WO (1) | WO2022068037A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203351278U (en) * | 2013-08-01 | 2013-12-18 | 远东电缆有限公司 | Mid-voltage and high-voltage direct current intelligent cable having online monitoring function |
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| CN213025453U (en) * | 2020-09-30 | 2021-04-20 | 中天科技装备电缆有限公司 | Photoelectric composite medium-voltage shore power cable |
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- 2020-09-30 CN CN202011065524.0A patent/CN112164499A/en active Pending
- 2020-12-03 WO PCT/CN2020/133612 patent/WO2022068037A1/en active Application Filing
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| CN102403060A (en) * | 2011-11-19 | 2012-04-04 | 扬州亚光电缆有限公司 | Novel three-phase power transmitting flat mobile flexible cable |
| CN102760519A (en) * | 2012-07-13 | 2012-10-31 | 江苏亨通电力电缆有限公司 | Photoelectric composite medium-voltage drum cable with rated voltage of 3.6/6kV-12/20kV and processing technology thereof |
| CN103000292A (en) * | 2012-12-21 | 2013-03-27 | 中天科技海缆有限公司 | Ultrahigh pressure cross linked polyethylene insulated flexible direct-current optical fiber composite submarine cable |
| CN203351278U (en) * | 2013-08-01 | 2013-12-18 | 远东电缆有限公司 | Mid-voltage and high-voltage direct current intelligent cable having online monitoring function |
| CN104751980A (en) * | 2015-03-30 | 2015-07-01 | 安徽华能电缆集团有限公司 | High-voltage shore power cable |
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| WO2022068037A1 (en) | 2022-04-07 |
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