CN112908533B - Seawater corrosion-resistant high-wear-resistance high-strength photoelectric composite flexible reel cable for shore power and preparation method thereof - Google Patents
Seawater corrosion-resistant high-wear-resistance high-strength photoelectric composite flexible reel cable for shore power and preparation method thereof Download PDFInfo
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- H—ELECTRICITY
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- 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
- H01B7/045—Flexible cables, conductors, or cords, e.g. trailing cables attached to marine objects, e.g. buoys, diving equipment, aquatic probes, marine towline
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- 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
- H01B13/0207—Details; Auxiliary devices
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- H—ELECTRICITY
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- 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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- 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
- H01B13/148—Selection of the insulating material therefor
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- 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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- 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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- 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
- H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
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- 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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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
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- 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
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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
- H01B7/1825—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of a high tensile strength core
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- 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
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- 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
- H01B7/22—Metal wires or tapes, e.g. made of steel
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- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
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- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/003—Power cables including electrical control or communication wires
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- 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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- 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
- H01B9/025—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of helicoidally wound wire-conductors
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Abstract
The invention provides a seawater corrosion-resistant high-wear-resistance high-strength photoelectric composite flexible shore power reel cable and a preparation method thereof. The outside of the multimode optical fiber core adopts a flexible protective layer which is flexible and deformable. The shore power reel cable provided by the invention has the characteristics of seawater corrosion resistance, wear resistance, good flexibility, stable signal transmission and the like, and can effectively guarantee power supply, photoelectric transmission, signal control and grounding safety protection at the same time in the use environment of large-scale hoisting equipment, photoelectric transmission equipment and shore power supply systems in ports and the like.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a reel cable for shore power, and specifically relates to a seawater corrosion-resistant high-abrasion-resistant high-strength photoelectric composite flexible reel cable for shore power.
Background
The shore power technology is a technology which is much concerned in recent years in port and navigation circles at home and abroad, namely, when a ship stops navigating at a port and a wharf to supply or load and unload goods, a generator of the ship is stopped, and power is supplied by a power grid of the land wharf, so that the atmosphere and noise pollution in the port city and the vicinity of the port city can be greatly reduced by using the shore power. In the shore power supply technology, a reel cable is one of the main components, and with the rapid development of science and technology, the shore power technology is not only used for power supply, but also has new requirements on photoelectric transmission, signal control, grounding safety protection and the like. And most of ports are seaports, the corrosivity of seawater is high, and the performance and the service life of the conventional shore power reel cable are greatly tested
Disclosure of Invention
According to a first aspect of the object of the invention, a seawater corrosion-resistant high-wear-resistance high-strength photoelectric composite type flexible reel cable for shore power is provided, which comprises:
the power cable comprises a plurality of groups of power cable cores, wherein each power cable core comprises a first conductor unit formed by stranding a plurality of flexible anaerobic tinned copper wires, and a power line insulating layer, a power line water-blocking tape and a first polyester tape which are wound outside the first conductor unit and are sequentially arranged from inside to outside;
the control wire core comprises a second conductor unit formed by stranding a plurality of flexible anaerobic tinned copper wires, and a control wire insulating layer, a control wire water-blocking tape and a second polyester tape which are sequentially arranged outside the second conductor unit from inside to outside;
the multi-mode optical fiber cable core comprises multi-mode optical fibers and a flexible protective layer extruded outside the multi-mode optical fibers, and the flexible protective layer is a deformable flexible protective layer with at least part of pore structures;
the at least one group of control wire cores are twisted in advance and wrapped by a second polyester tape, and then the flexible sheath layer is prepared by the second polyester tape;
in the cabling process, a plurality of groups of power wire cores and at least one group of control wire cores are simultaneously stranded, at least one group of multi-mode optical fiber wire cores and filling strips are placed in gaps, and a non-woven polyester fiber tape is wound outside the stranded cable core;
extruding an inner protective layer outside a non-woven polyester fiber band, wherein the inner protective layer is formed by extruding a butyronitrile composite soft sheath material;
a reinforced composite shielding layer is arranged outside the inner protective layer; and
and an outer protective layer is extruded outside the reinforced composite shielding layer and is formed by extruding a chlorinated polyethylene sheath material.
Preferably, in the first conductor unit and the second conductor unit, each strand of oxygen-free tinned copper wire is provided with Kevlar wire.
Preferably, weather-resistant ethylene propylene diene monomer insulating materials are extruded in the power line insulating layer and the control line insulating layer.
Preferably, in the at least one group of control cores, the flexible sheath layer is formed by extruding a butyronitrile composite flexible sheath material.
Preferably, in the at least one group of multimode optical fiber cores, the flexible protective layer is extruded by polyethylene sheath material.
Preferably, the reinforced composite shielding layer is formed by hybrid weaving of a galvanized steel wire and a tinned soft copper wire.
Preferably, the flexible protective layer is a sandwich type sandwich protective structure, the outer layer and the inner layer are both polyethylene protective layers, and the middle layer is a buffer layer which changes periodically and alternately.
Preferably, the buffer layer has a regular wave-like structure in cross section, and peaks and valleys are alternately joined to the inner layer and the outer layer, respectively.
Preferably, the intermediate layer is a thin-walled structure and has a layer thickness smaller than the layer thickness of the outer and inner layers.
Preferably, in the preparation process of the flexible protection layer, the inner layer is extruded on the periphery of the multimode optical fiber, and then the middle layer and the outer layer are extruded.
According to a second aspect of the object of the present invention, there is also provided a method for preparing the reel cable for shore power, comprising the following steps:
stranding a conductor: firstly, binding strands, wherein each strand of tinned copper wire strand is provided with a Kevlar wire drawing as reinforcement, and then stranding a plurality of strands of anaerobic tinned copper wire strands containing Kevlar wires into a power wire conductor and a control wire conductor;
extruding the insulating layer: twisting the power wire core conductor and the control wire core conductor which are molded into a layer, and respectively extruding a layer of weather-resistant ethylene propylene diene monomer insulating material serving as an insulating layer by an extruding and vulcanizing machine;
wrapping an insulating layer: a water blocking tape and a high-temperature polyester tape wrap the insulating layer of each power wire core and each control wire core;
control line stranding and sheathing: the control wire core is cabled at a small pitch in a cage stranding machine and wrapped by a polyester tape, and a semi-finished product of the cabled control wire core is extruded to form a flexible sheath layer made of a butyronitrile composite flexible sheath material through an extruder.
Extruding an optical fiber sheath: extruding the multimode optical fiber into a flexible protective layer by an extruder, wherein the flexible protective layer is a deformable flexible protective layer with at least partial pore structure;
cabling procedure: cabling the power wire core and the control wire core at a small pitch by a cabling machine of 1+6, putting a multi-mode optical fiber wire core and a nylon filler strip in a gap of the wire cores, and winding a non-woven polyester fiber tape outside the cable cores to manufacture a semi-finished cable;
extruding the inner protective layer: extruding the semi-finished cable into butyronitrile composite soft sheath material as an inner sheath layer by an extruder;
preparing a reinforcing shielding layer: a galvanized steel wire and a tinned soft copper wire are wound outside the inner protective layer through an ingot braiding machine, and the galvanized steel wire and the tinned soft copper wire are mixed and braided to serve as a reinforcing shielding layer;
extruding an outer sheath: and extruding the wound semi-finished cable into a sheath layer made of waterproof chlorinated polyethylene by a rubber extruding and vulcanizing machine to obtain the finished shore power cable.
Preferably, the optical fiber sheath is extruded, wherein the flexible protective layer is a sandwich-type sandwich protective structure, the outer layer and the inner layer are both polyethylene protective layers, and the middle layer is a buffer layer which changes periodically and alternately.
Preferably, in the preparation process of the flexible protection layer, the inner layer is firstly extruded on the periphery of the multimode optical fiber, and then the middle layer and the outer layer are extruded together, wherein the section of the buffer layer is in a regular wavy structure, and the wave crests and the wave troughs are respectively and alternately jointed with the inner layer and the outer layer.
Compared with the prior art, the invention has the following remarkable beneficial effects:
1. according to the invention, the power wire core and the control wire core conductor are twisted through a plurality of strands of high-flexibility high-quality anaerobic tinned copper wires, kevlar wire drawing reinforcement is arranged in the middle of each strand of tinned copper wire, the conductors are twisted by adopting small pitches, the structure of the twisted conductors is stable, the overall strength of the twisted conductors is far higher than that of the ordinary twisted conductors, the overall flexibility and bending property of the cable are ensured, the minimum bending radius of the finished cable can reach 6D (D is the outer diameter of the cable), and the use requirement of frequent winding and unwinding of a reel is met.
2. The insulating layer of the power wire core and the control wire core adopts a weather-resistant ethylene propylene diene monomer insulating material, the tensile strength is more than or equal to 6.5MPa, the elongation at break is more than or equal to 250 percent, and the minimum value of the volume resistivity exceeds 5.0 multiplied by 10 15 Omega cm, the aging temperature is 135 ℃ (7 days), the tensile strength and the elongation at break after aging can be qualified and better than the standard specified values, and the ozone aging resistance test can be passed. The cable can still effectively and safely operate for a long time under the condition of seawater corrosion.
3. The water-blocking tape and the high-temperature polyester tape are wrapped outside the control wire insulating layer, the control wire is cabled by adopting fine pitch, and butyronitrile composite soft sheath material is extruded outside the cable core to serve as a protective layer. The control wire can have certain sliding effect when the reel cable is wound and unwound, and the condition that the control wire core is broken when the control wire core is used for a long time is ensured.
4. The cabling structure is formed by twisting the power wire core and the low-voltage wire core at a small pitch, and the control wire and the optical fiber are placed in the gap of the wire cores, so that the flexibility, the tensile strength and the bending performance of high-frequency coiling and uncoiling of the whole cable can be improved, and the service life of the cable is prolonged.
5. The cable inner sheath layer adopts the butyronitrile composite soft sheath material, so that the integral strength of the cable is ensured, the internal structure of the cable is more stable and reliable, and the waterproof and anti-corrosion effects of the cable are improved.
5. According to the invention, the reinforced shielding layer is wound by adopting the high-strength galvanized steel wire and the tinned soft copper wire, so that the electromagnetic and electric field shielding of the complex environment of the cable is effectively ensured, the shielding effect of the cable is ensured, and the galvanized steel wire is added to ensure the strength of the cable.
6. Aiming at the complex conditions under the seawater and marine environments and particularly the problem of easy optical fiber damage, the shore power cable provided by the invention is provided with a special optical fiber flexible protective layer, and the damage of the complex operating environment to the optical fiber is relieved through a flexibly changeable protective layer structure, so that the normal optical signal communication is ensured; meanwhile, when the cable is damaged or cut off by external force, the damage to the optical fiber at the fracture is reduced;
7. the cable provided by the invention adopts a modified high-strength waterproof chlorinated polyethylene sheath material, the tensile strength of the sheath rubber is more than or equal to 15MPa, the elongation at break is more than or equal to 500%, and the tear strength is far more than 10MPa. Compared with the conventional cable, the cable has the advantages of outstanding waterproof effect, excellent flexibility and stable transmission of control signals and optical communication signals.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent. Additionally, all combinations of claimed subject matter are considered a part of the presently disclosed subject matter.
The foregoing and other aspects, embodiments and features of the present teachings will be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
The figures are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a cross-sectional structure view of a reel cable for photovoltaic composite flexible shore power of the present invention.
Figure 2 is a schematic representation of an oxygen free tinned copper wire strand of the present invention.
Fig. 3a-3b are structural diagrams of the multi-mode optical fiber core flexible protective layer of the reel cable for the photoelectric composite flexible shore power of the invention.
Fig. 4 is a schematic diagram of a preparation process of the photoelectric composite flexible shore power reel cable.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. Additionally, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
Referring to fig. 1 to 4, the seawater corrosion prevention high wear resistance high strength photoelectric composite flexible shore power reel cable according to the exemplary embodiment of the present invention includes a power core, a control core and a multi-mode optical fiber core, wherein in the process of cabling the power core and the control core, after the multi-mode optical fiber core and a filler strip are disposed in a gap, a non-woven polyester fiber tape is wrapped outside to form a semi-finished cable, and an inner sheath, a reinforced composite shielding layer and an outer sheath are sequentially formed outside the semi-finished cable to form a finished cable.
The multimode optical fiber core is internally provided with the multimode optical fiber for optical communication, and particularly needs to be protected by attention, so that a flexible deformable flexible protection layer is adopted in the embodiment of the invention, the external pressure can be greatly counteracted through the deformable structure design of a sandwich structure, the damage to the internal multimode optical fiber is reduced, and meanwhile, when the damage or active cutting occurs, due to the design of the buffer layer which is periodically and alternately changed, the multimode optical fiber core can be timely disconnected to form an ideal fracture, and the further damage to the optical fiber, such as the fracture and the like, is prevented.
The power cable comprises a plurality of groups of power cable cores, wherein each power cable core comprises a first conductor unit 1 formed by stranding a plurality of flexible anaerobic tinned copper wires, a power line insulating layer 2, a power line water-blocking tape 3 and a first polyester tape, wherein the power line insulating layer 2, the power line water-blocking tape 3 and the first polyester tape are wound outside the first conductor unit and are sequentially arranged from inside to outside.
The control cable core comprises a second conductor unit 4 formed by stranding a plurality of flexible anaerobic tinned copper wires, and a control wire insulating layer 5, a control wire water-blocking tape 6 and a second polyester tape which are sequentially arranged outside the second conductor unit from inside to outside; wherein, at least a set of control core twists in advance and adopts the second polyester area to wrap the back around, then the flexible restrictive coating 7 of second polyester area preparation system realizes the protection to the control core.
And the multi-mode optical fiber cores comprise multi-mode optical fibers 8 and flexible protective layers 9 extruded outside the multi-mode optical fibers. It is particularly preferred that the flexible protective layer 9 is a deformable flexible protective layer having at least a partial pore structure.
In the cabling process, a plurality of groups of power wire cores and at least one group of control wire cores are simultaneously stranded, at least one group of multi-mode optical fiber wire cores and the filling strips 10 are placed in gaps, and a non-woven polyester fiber tape is wound outside the stranded cable core. The filler strip 10 is, in particular, a nylon filler strip.
An inner protective layer 11 is extruded outside the non-woven polyester fiber band, and the inner protective layer is formed by extruding a butyronitrile composite soft sheath material.
And a reinforced composite shielding layer 12 is arranged outside the inner protective layer.
An outer protective layer 13 is extruded outside the reinforced composite shielding layer, and the outer protective layer is formed by extruding a chlorinated polyethylene sheath material.
Preferably, as shown in fig. 2, in the first conductor unit and the second conductor unit, a kevlar wire 15 is arranged in each strand of the oxygen-free tinned copper wire strand to reinforce the oxygen-free tinned copper wire 14, so that the high-strength flexible oxygen-free tinned copper wire strand is obtained.
Preferably, weather-resistant ethylene propylene diene monomer insulating materials are extruded in the power line insulating layer 2 and the control line insulating layer 5.
Preferably, in at least one group of control cores, the flexible sheath layer 7 is extruded from a butyronitrile composite flexible sheath material.
Preferably, in at least one group of multimode fiber cores, the flexible protection layer 9 is extruded from polyethylene sheath material.
Preferably, the reinforced composite shielding layer 12 is formed by mixing and weaving a galvanized steel wire and a tinned soft copper wire.
Preferably, referring to fig. 3a-3b, the flexible protective layer 9 is a sandwich-type sandwich protective structure, the inner layer 9a and the outer layer 9b are both polyethylene protective layers, and the middle layer is a buffer layer 9c which changes periodically and alternately.
Preferably, the cross-section of the buffer layer 9c is in a regular wave-like structure, and the peaks and valleys are alternately joined to the inner layer and the outer layer, respectively.
Optionally, the intermediate layer is of thin-walled construction and has a layer thickness that is less than the layer thickness of the outer and inner layers. Therefore, a plurality of micropore structures are formed between the protective layers of the inner layer and the outer layer, when external force is received, micro deformation can be realized to relieve and offset pressure, and damage to the optical fiber is reduced. Meanwhile, when the optical fiber needs to be cut off, the micro-pore structure can easily help to cut off the core of the optical fiber when the optical fiber is cut off by the scissors, and further damage to the optical fiber caused by tearing is reduced.
Preferably, in the specific preparation process of the flexible protection layer, the inner layer is extruded on the periphery of the multimode optical fiber, and then the middle layer and the outer layer are extruded.
According to a second aspect of the object of the present invention, there is also provided a method for preparing the reel cable for shore power, comprising the following steps:
stranding a conductor: firstly, binding strands, wherein each strand of tinned copper wire strand is provided with a Kevlar wire drawing as reinforcement, and then stranding a plurality of strands of anaerobic tinned copper wire strands containing Kevlar wires into a power wire conductor and a control wire conductor;
extruding the insulating layer: respectively extruding a layer of weather-resistant ethylene propylene diene monomer insulating material serving as an insulating layer from a twisted and formed power core conductor and a control core conductor through a phi 120 rubber extrusion continuous vulcanization machine;
insulating layer is lapped: a water blocking tape and a high-temperature polyester tape wrap the insulating layer of each power wire core and each control wire core;
control line stranding and sheathing: the control wire core is cabled in a cage stranding machine by adopting a small pitch and wrapped by adopting a polyester tape, and a semi-finished product of the cabled control wire core passes through a phi 90 extruder to extrude a flexible sheath layer made of a butyronitrile composite flexible sheath material.
Extruding the optical fiber sheath: extruding the multimode optical fiber into a flexible protective layer by a phi 90 extruder, wherein the flexible protective layer is a deformable flexible protective layer with at least part of pore structures;
cabling procedure: cabling the power wire core and the control wire core at a small pitch by a cabling machine of 1+6, putting a multi-mode optical fiber wire core and a nylon filler strip in a gap of the wire cores, and winding a non-woven polyester fiber tape outside the cable cores to manufacture a semi-finished cable;
extruding the inner protective layer: extruding the semi-finished cable into butyronitrile composite soft sheath material as an inner protective layer by a phi 90 extruder;
preparing a reinforced shielding layer: a galvanized steel wire and a tinned soft copper wire are wound outside the inner protective layer through an ingot braiding machine, and the galvanized steel wire and the tinned soft copper wire are mixed and braided to serve as a reinforcing shielding layer;
extruding an outer sheath: and extruding the wound semi-finished cable by a phi 150 rubber extrusion continuous vulcanization machine to form a sheath layer made of waterproof chlorinated polyethylene, and thus obtaining the finished shore power cable.
Preferably, the optical fiber sheath is extruded, wherein the flexible protective layer is a sandwich type sandwich protective structure, the outer layer and the inner layer are both polyethylene protective layers, and the middle layer is a buffer layer which changes periodically and alternately.
Preferably, in the preparation process of the flexible protection layer, the inner layer is extruded on the periphery of the multimode optical fiber, and then the middle layer and the outer layer are extruded together, wherein the section of the buffer layer is in a regular wavy structure, and the wave crests and the wave troughs are respectively and alternately jointed with the inner layer and the outer layer.
The shore power reel cable provided by the invention has the characteristics of seawater corrosion resistance, wear resistance, good flexibility, stable signal transmission and the like, and can effectively guarantee power supply, photoelectric transmission, signal control and grounding safety protection at the same time in the use environment with large-scale hoisting equipment, photoelectric transmission equipment and shore power supply systems at ports and the like.
Although the invention has been described with reference to preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (10)
1. The utility model provides a prevent that sea water corrodes reel cable for compound flexible shore connection of high abrasion high strength photoelectricity which characterized in that includes:
the power cable comprises a plurality of groups of power cable cores, wherein each power cable core comprises a first conductor unit formed by stranding a plurality of flexible anaerobic tinned copper wires, and a power line insulating layer, a power line water-blocking tape and a first polyester tape which are wound outside the first conductor unit and are sequentially arranged from inside to outside;
the control wire core comprises a second conductor unit formed by stranding a plurality of flexible anaerobic tinned copper wires, and a control wire insulating layer, a control wire water-blocking tape and a second polyester tape which are sequentially arranged outside the second conductor unit from inside to outside;
the multi-mode optical fiber cable core comprises multi-mode optical fibers and a flexible protective layer extruded outside the multi-mode optical fibers, and the flexible protective layer is a deformable flexible protective layer with at least part of pore structures;
the at least one group of control wire cores are twisted on a second polyester tape in advance, and then a flexible sheath layer is prepared outside the polyester tape layer;
in the cabling process, a plurality of groups of power wire cores and at least one group of control wire cores are simultaneously twisted, at least one group of multimode optical fiber wire cores and filling strips are placed in gaps, and a non-woven polyester fiber belt is wound outside the twisted cable core;
extruding an inner protective layer outside a non-woven polyester fiber band, wherein the inner protective layer is formed by extruding butyronitrile composite soft sheath material;
a reinforced composite shielding layer is arranged outside the inner protective layer; and
an outer protective layer is extruded outside the reinforced composite shielding layer and is formed by extruding a chlorinated polyethylene sheath material;
the flexible protective layer is of a sandwich type sandwich protective structure, the outer layer and the inner layer are both polyethylene protective layers, and the middle layer is a buffer layer which periodically and alternately changes;
the cross section of the buffer layer is of a regular wavy structure, and wave crests and wave troughs are respectively and alternately connected with the inner layer and the outer layer;
the middle layer is of a thin-wall structure, and the thickness of the middle layer is smaller than that of the outer layer and the inner layer.
2. The seawater corrosion-resistant high-abrasion-resistant high-strength photoelectric composite type flexible shore power reel cable according to claim 1, wherein Kevlar wires are arranged in each strand of the oxygen-free tinned copper wire in the first conductor unit and the second conductor unit.
3. The seawater corrosion-resistant high-abrasion-resistant high-strength photoelectric composite flexible shore power reel cable as claimed in claim 1, wherein weather-resistant ethylene propylene diene monomer insulating materials are extruded in the power line insulating layer and the control line insulating layer.
4. The reel cable for the photovoltaic composite flexible shore power with seawater corrosion resistance, high wear resistance and high strength according to claim 1, wherein the flexible sheath layer in the at least one group of control cores is formed by extruding butyronitrile composite flexible sheath material.
5. The marine corrosion resistant, high abrasion resistant, and high strength photoelectric composite flexible shore power spooled cable of claim 1, wherein the flexible protective layer is extruded from a polyethylene sheathing material in the at least one group of multimode optical fiber cores.
6. The seawater corrosion-preventing high-abrasion-resistant high-strength photoelectric composite flexible shore power reel cable according to claim 1, wherein the reinforced composite shielding layer is formed by blending galvanized steel wires and tinned soft copper wires.
7. The seawater corrosion-resistant high-wear-resistance high-strength photoelectric composite flexible reel cable for shore power as claimed in claim 1, wherein in the preparation process of the flexible protective layer, the inner layer is extruded on the periphery of the multimode optical fiber, and then the middle layer and the outer layer are extruded together.
8. The preparation method of the seawater corrosion-resistant high-wear-resistance high-strength photoelectric composite flexible reel cable for shore power according to claim 1, comprising the following steps:
stranding a conductor: firstly, binding strands, wherein each strand of tinned copper wire strand is provided with Keff drawn wires as reinforcement, and then stranding a plurality of strands of anaerobic tinned copper wire strands containing Keff drawn wires into a power wire core conductor and a control wire core conductor;
extruding the insulating layer: respectively extruding a layer of weather-resistant ethylene propylene diene monomer insulating material serving as an insulating layer from the twisted and formed power core conductor and control core conductor through a rubber extruding and vulcanizing machine;
insulating layer is lapped: a water blocking tape and a high-temperature polyester tape are wrapped outside the insulating layer of each power wire core and each control wire core;
control line stranding and sheathing: the control wire core is cabled by a cage stranding machine at a small pitch and wrapped by a polyester tape, and a layer of flexible sheath layer made of butyronitrile composite flexible sheath material is extruded from a cabled control wire core semi-finished product by an extruder;
extruding the optical fiber sheath: extruding the flexible protective layer by the extruder through the multimode optical fiber, wherein the flexible protective layer is a deformable flexible protective layer with at least partial pore structure;
cabling procedure: cabling the power wire core and the control wire core at a small pitch by a cabling machine of 1+6, putting a multi-mode optical fiber wire core and a nylon filler strip in a gap of the wire cores, and winding a non-woven polyester fiber tape outside the cable cores to manufacture a semi-finished cable;
extruding the inner protective layer: extruding the semi-finished cable into butyronitrile composite soft sheath material as an inner protective layer by an extruder;
preparing a reinforced shielding layer: a galvanized steel wire and a tinned soft copper wire are wound outside the inner protective layer through an ingot braiding machine, and the galvanized steel wire and the tinned soft copper wire are mixed and braided to serve as a reinforcing shielding layer;
extruding an outer sheath: and extruding a layer of sheath layer made of waterproof chlorinated polyethylene by using a rubber extruding and sulfur connecting machine to obtain the finished shore power cable.
9. The method for preparing a seawater corrosion-resistant high-abrasion-resistant high-strength photoelectric composite flexible reel cable for shore power as claimed in claim 8, wherein the optical fiber sheath is extruded, the flexible protective layer is a sandwich type sandwich protective structure, the outer layer and the inner layer are both polyethylene protective layers, and the middle layer is a buffer layer which is periodically and alternately changed.
10. The method for preparing a seawater corrosion-resistant high-abrasion-resistant high-strength photoelectric composite flexible shore power reel cable according to claim 9, wherein in the preparation process of the flexible protection layer, the inner layer is extruded on the periphery of the multimode optical fiber, and then the middle layer and the outer layer are extruded together, wherein the section of the buffer layer is in a regular wavy structure, and the wave crests and the wave troughs are alternately jointed with the inner layer and the outer layer respectively.
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|---|---|---|---|
| CN202110112640.1A CN112908533B (en) | 2021-01-27 | 2021-01-27 | Seawater corrosion-resistant high-wear-resistance high-strength photoelectric composite flexible reel cable for shore power and preparation method thereof |
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| CN202110112640.1A CN112908533B (en) | 2021-01-27 | 2021-01-27 | Seawater corrosion-resistant high-wear-resistance high-strength photoelectric composite flexible reel cable for shore power and preparation method thereof |
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| CN112908533B true CN112908533B (en) | 2023-01-03 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN208570180U (en) * | 2018-07-23 | 2019-03-01 | 广州市丰泰电业有限公司 | A kind of cold resistant cable |
| CN210156165U (en) * | 2019-04-24 | 2020-03-17 | 扬州市金鑫电缆有限公司 | Novel central force-bearing flexible communication cable |
| CN212181992U (en) * | 2020-06-19 | 2020-12-18 | 天津友惠电线电缆有限公司 | Breakage-proof cable |
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| JP2001067948A (en) * | 1999-08-27 | 2001-03-16 | Hitachi Cable Ltd | Flexible optical fiber cable |
| CN203871050U (en) * | 2014-06-05 | 2014-10-08 | 德柔电缆（上海）有限公司 | Three-in-one medium-pressure reeling cable |
| CN210837227U (en) * | 2019-11-29 | 2020-06-23 | 无锡市明珠电缆有限公司 | High and cold-resistant ultraviolet-proof mobile combined power flexible cable for plateau vehicle |
| CN211045090U (en) * | 2020-01-16 | 2020-07-17 | 深圳市恒利德实业有限公司 | High-strength bending-resistant photoelectric composite cable |
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2021
- 2021-01-27 CN CN202110112640.1A patent/CN112908533B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208570180U (en) * | 2018-07-23 | 2019-03-01 | 广州市丰泰电业有限公司 | A kind of cold resistant cable |
| CN210156165U (en) * | 2019-04-24 | 2020-03-17 | 扬州市金鑫电缆有限公司 | Novel central force-bearing flexible communication cable |
| CN212181992U (en) * | 2020-06-19 | 2020-12-18 | 天津友惠电线电缆有限公司 | Breakage-proof cable |
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