CN215183139U - Flexible cable - Google Patents
Flexible cable Download PDFInfo
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- CN215183139U CN215183139U CN202121332507.9U CN202121332507U CN215183139U CN 215183139 U CN215183139 U CN 215183139U CN 202121332507 U CN202121332507 U CN 202121332507U CN 215183139 U CN215183139 U CN 215183139U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model provides a flexible cable relates to cable technical field. The flexible cable comprises a conductor, an insulating layer, a sheath layer and a mildew-proof protective layer; the insulating layer is wrapped on the outer surface of the conductor; the sheath layer is wrapped on the outer surface of the insulating layer; the mildew-proof protective layer is arranged on the outer surface of the sheath layer and is made of Teflon coating. The mildew-proof protective layer made of the Teflon coating is arranged on the outer surface of the sheath layer, so that bacteria and mildew can be effectively prevented from growing on the mildew-proof protective layer, and the mildew-proof performance of the flexible cable can be improved when the flexible cable is used at sea.
Description
Technical Field
The utility model relates to a cable technical field especially relates to a flexible cable.
Background
Wind power generation is one of the most mature power generation modes with the most potential development technology, development scale and development prospect in the global renewable energy field. The design and production of the wind energy cable refer to GB/T29631-2013 standard, the standard provides requirements on salt mist resistance of the wind energy cable, but the offshore environment is variable, and the salt mist resistance requirements cannot meet the use requirements of the cable.
In the prior art, the flexible cable is sequentially provided with a conductor, an insulating layer and a sheath layer from inside to outside, and the sheath layer can avoid the corrosion of salt mist to the inside of the flexible cable.
However, the flexible cable in the prior art has a problem that the flexible cable is mildewed when being used at sea.
SUMMERY OF THE UTILITY MODEL
The utility model provides a flexible cable to the problem that flexible cable goes mildy can appear when the marine use of flexible cable among the solution prior art.
The utility model provides a flexible cable, include: comprises a conductor, an insulating layer, a sheath layer and a mildew-proof protective layer;
the insulating layer is wrapped on the outer surface of the conductor;
the sheath layer is wrapped on the outer surface of the insulating layer;
the mildew-proof protective layer is arranged on the outer surface of the sheath layer and is made of Teflon coating.
Optionally, the conductor comprises 37 strands, and the conductor is formed by twisting the 37 strands in the same direction;
each strand comprises 49 copper monofilaments and 5 aramid filaments, and is formed by stranding 49 copper monofilaments and 5 aramid filaments.
Optionally, the shape of the strand is circular, the strand comprises a first layer, a second layer, a third layer, a fourth layer and a fifth layer from inside to outside, and the first layer, the second layer, the third layer, the fourth layer and the fifth layer are concentrically arranged;
the first layer comprises 1 of the copper monofilaments; the second layer comprises 4 copper monofilaments and 2 aramid filaments, and the 2 aramid filaments are uniformly arranged at intervals in the circumferential direction; the third layer comprises 9 copper monofilaments and 3 aramid filaments, and the 3 aramid filaments are uniformly arranged at intervals in the circumferential direction; the fourth layer comprises 18 of the copper monofilaments; the fifth layer comprises 17 of the copper monofilaments.
Optionally, the first, second, third and fifth layers have the same twist direction.
Optionally, the insulating layer is made of high-strength high-temperature-resistant ethylene propylene rubber alloy.
Optionally, the thickness of the insulating layer is 1.2mm to 3 mm.
Optionally, the material of the sheath layer is a 105 ℃ mildew-proof thermoplastic elastomer.
Optionally, the thickness of the sheath layer is 3mm to 3.5 mm.
Optionally, an isolation layer is further included, the isolation layer being disposed between the conductor and the insulating layer.
Optionally, the isolation layer is made of a high-temperature resistant polyimide film.
The utility model provides a flexible cable through set up the mould proof protective layer of making by teflon coating on the surface at the restrictive coating, can effectively prevent the growth of bacterium and mould on the mould proof protective layer to can improve the mould proof performance of flexible cable when marine use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a flexible cable according to an embodiment of the present invention;
fig. 2 is a schematic view of a conductor in a flexible cable provided in fig. 1;
fig. 3 is a schematic view of the structure of a strand in one of the flexible cables provided in fig. 2.
Reference numerals:
10-a conductor; 11-a strand; 111-copper monofilament;
112-aramid filaments; 20-an insulating layer; 30-a sheath layer;
40-mildew-proof protective layer; 50-isolating layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the prior art, the flexible cable is sequentially provided with a conductor, an insulating layer and a sheath layer from inside to outside, and the sheath layer can avoid the corrosion of salt mist to the inside of the flexible cable.
However, the flexible cable in the prior art has a problem that the flexible cable is mildewed when being used at sea.
In order to solve the problem, the embodiment of the utility model provides a flexible cable through set up the mould proof protective layer of making by teflon coating on the surface of restrictive coating, can effectively prevent the growth of bacterium and mould on the mould proof protective layer to can improve the mould proof performance of flexible cable when marine use.
The flexible cable provided by the present invention is described in detail with reference to the following embodiments.
Fig. 1 is a schematic structural diagram of a flexible cable according to an embodiment of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a flexible cable, which includes a conductor 10, an insulating layer 20, a sheath layer 30, and a mold-proof protective layer 40; the insulating layer 20 is wrapped on the outer surface of the conductor 10; sheath layer 30 is wrapped on the outer surface of insulating layer 20; the mildew-proof protective layer 40 is arranged on the outer surface of the sheath layer 30, and the mildew-proof protective layer 40 is made of Teflon coating.
The mildew-proof protective layer 40 is arranged on the outer surface of the sheath layer 30, the mildew-proof protective layer 40 is made of Teflon coating, and the Teflon coating has the advantages of non-adhesiveness, low friction and corrosion resistance, so that bacteria and mildew can be effectively prevented from growing on the mildew-proof protective layer, and the mildew-proof performance of the flexible cable in the marine use process can be improved.
The thickness of the mold-proof protective layer 40 is determined as needed, and is not specifically set herein. Preferably, the thickness of the mold-proof protective layer 40 is 0.4mm to 0.6 mm.
Fig. 2 is a schematic view of a conductor structure in a flexible cable provided in fig. 1.
Optionally, the conductor 10 includes a plurality of strands 11, and the conductor 10 is formed by twisting the plurality of strands 11 in the same direction; each strand 11 includes a plurality of copper monofilaments 111 and a plurality of aramid filaments 112, and each strand 11 is formed by twisting the plurality of copper monofilaments 111 and the plurality of aramid filaments 112.
The conductor 10 is formed by twisting a plurality of strands 11 in the same direction to form a circular shape, each layer of the conductor 10 is formed by twisting the plurality of strands 11, and the twisting pitch of each layer is 3-7 times of the diameter of a copper monofilament in the layer.
The cross-sectional area of the conductor 10 is determined as needed, and is not specifically set here. Preferably, the cross-sectional area of the conductor 10 is 10mm2～400mm2。
It should be noted that the twisting direction of each layer of the conductor 10 may be the same or different, and is not provided here.
It should also be noted that the strands 11 of the present application are not limited to being composed of copper monofilaments 111 and aramid filaments 112, but may be composed of other conductive monofilaments and aramid filaments 112.
In an alternative embodiment, shown in FIG. 2, the cross-sectional area of conductor 10 is 240mm2The conductor 10 comprises 37 strands 11, and the conductor 10 is formed by twisting the 37 strands 11 in the same direction. The conductor 10 comprises four layers, including a first strand layer, a second strand layer, a third strand layer and a third strand layer from inside to outside; the first strand layer comprises 1 strand 11, the second strand layer comprises 6 strands 11, the third strand layer comprises 12 strands 11, and the fourth strand layer comprises 18 strands 11; the twisting directions of the first strand layer, the second strand layer, the third strand layer and the fourth strand layer are the same, so that when the conductor 10 is subjected to torsion, each layer of the conductor 10 can be synchronously enlarged or reduced, relative displacement cannot occur, and the flexibility of the flexible cable can be improved.
In another alternative embodiment, the cross-sectional area of conductor 10 is 240mm2The conductor 10 comprises 37 strands 11, and the conductor 10 is formed by twisting the 37 strands 11 in the same direction. The conductor 10 comprises four layers, including a first strand layer, a second strand layer, a third strand layer and a third strand layer from inside to outside; the first strand layer comprises 1 strand 11, and the twisting direction of the first strand layer is right-hand twisting; the second strand layer comprises 6 strands 11, and the twisting direction of the second strand layer is a left-hand twisting direction; the third strand layer comprises 12 strands 11, the firstThe twisting direction of the three wire layers is right-hand twisting; the fourth strand layer comprises 18 strands 11, and the twisting direction of the fourth strand layer is a left-hand twisting.
Fig. 3 is a schematic view of the structure of a strand in one of the flexible cables provided in fig. 2.
Optionally, the shape that the strand 11 is twisted by a plurality of copper monofilaments 111 and a plurality of aramid filaments 112 is circular, the strand 11 comprises a first layer, a second layer, a third layer, a fourth layer and a fifth layer from inside to outside, the first layer, the second layer, the third layer, the fourth layer and the fifth layer are concentrically arranged, the tensile strength of the conductor 10 can be increased by increasing the aramid filaments 112 in the twisting process of the plurality of copper monofilaments 111, and therefore the load bearing capacity of the flexible cable during vertical laying in a long length can be improved.
The shape in which the strand 11 is stranded by the plurality of copper monofilaments 111 and the plurality of aramid filaments 112 may be circular. In other implementations, the shape of the strand 11 twisted by the plurality of copper monofilaments 111 and the plurality of aramid filaments 112 may be a square, and is not specifically provided here.
The diameters of the plurality of copper monofilaments 111 may be the same or different, and are not specifically set here. Preferably, the diameter of the copper monofilament 111 is 0.198mm to 0.402 mm.
It should be noted that the direction of twisting of each layer of the strands 11 may be the same or different, and is not provided here.
In an alternative embodiment, as shown in fig. 3, the strand 11 comprises 49 copper filaments 111 and 5 aramid filaments 112, the copper filaments 111 each having a diameter of 0.4 mm. The strand 11 comprises a first layer, a second layer, a third layer, a fourth layer and a fifth layer from inside to outside; the first layer comprises 1 copper monofilament 111; the second layer comprises 4 copper monofilaments 111 and 2 aramid filaments 112, and the 2 aramid filaments 112 are uniformly arranged at intervals in the circumferential direction; the third layer comprises 9 copper monofilaments 111 and 3 aramid filaments 112, and the 3 aramid filaments 112 are uniformly arranged at intervals in the circumferential direction; the fourth layer comprises 18 copper monofilaments 111; the fifth layer comprises 17 copper monofilaments 111; the twisting directions of the first layer, the second layer, the third layer, the fourth layer and the fifth layer are the same.
In another alternative embodiment, the strand 11 comprises 49 copper filaments 111 and 5 aramid filaments 112, the copper filaments 111 each having a diameter of 0.4 mm. The strand 11 comprises a first layer, a second layer, a third layer, a fourth layer and a fifth layer from inside to outside; the first layer comprises 1 copper monofilament 111, and the twisting direction of the first layer is left-hand twisting; the second layer comprises 4 copper monofilaments 111 and 2 aramid filaments 112, the 2 aramid filaments 112 are uniformly arranged at intervals in the circumferential direction, and the twisting direction of the second layer is right-hand twisting; the third layer comprises 9 copper monofilaments 111 and 3 aramid fibers 112, the 3 aramid fibers 112 are uniformly arranged at intervals in the circumferential direction, and the twisting direction of the third layer is left-hand twisting; the fourth layer comprises 18 copper monofilaments 111, and the twisting direction of the fourth layer is right-hand twisting; the fifth layer comprises 17 copper monofilaments 111, and the twisting direction of the fifth layer is left-hand twisting.
Optionally, the insulating layer 20 is made of a material having high temperature resistance and insulating properties, so that the service life of the insulation of the flexible cable can be increased.
The thickness of the insulating layer 20 is determined as needed, and is not specifically set herein. Preferably, the thickness of the insulating layer 20 is 1.2mm to 3 mm.
In an alternative embodiment, the insulating layer 20 is made of high strength high temperature ethylene propylene rubber alloy. The high-strength high-temperature-resistant ethylene propylene rubber alloy is formed by mixing various raw materials. The high-strength high-temperature-resistant ethylene propylene rubber alloy comprises the following components in parts by mass: 60-70 parts of Ethylene Propylene Rubber (EPR), 25-30 parts of chlorosulfonated polyethylene rubber (CSM), 5-10 parts of hydrogenated styrene/isoprene copolymer (SEPS), 20-30 parts of white carbon black, 5-15 parts of kaolin, 10-30 parts of paraffin oil, 5-10 parts of high-activity magnesium oxide, 1-5 parts of stearic acid, 1-5 parts of 2,2, 4-trimethyl-1, 2-dihydroquinoline polymer, 1-5 parts of N-phenyl-2-naphthylamine, 1-5 parts of triallyl isocyanurate and 4-10 parts of di-tert-butylperoxydiisopropyl benzene. The insulating layer 20 is made of high-strength high-temperature-resistant ethylene propylene rubber alloy, so that the service life of the insulation of the flexible cable can be prolonged, and the torsion resistance of the flexible cable can be improved.
Optionally, the flexible cable further comprises an insulation layer 50, the insulation layer 50 being arranged between the conductor 10 and the insulation layer 20, the insulation layer 20 being arranged between the insulation layer 50 and the jacket layer 30.
The isolation layer 50 needs to have high temperature resistance, can increase the current-carrying capacity of the flexible cable, and can also improve the service life of the flexible cable. The material of the isolation layer 50 may be a high temperature resistant polyimide film material. In other implementations, the material of the isolation layer 50 may also be a polyester tape or a non-woven fabric, which is not specifically configured here.
By combining the isolation layer 50 and the insulation layer 20, the long-term operating temperature of the conductor 10 of the flexible cable can be increased to 125 ℃, so that the current-carrying capacity of the flexible cable can be increased and the service life of the insulation of the flexible cable can be prolonged.
Optionally, the sheath layer 30 is required to have mildew-proof performance, and the combination of the sheath layer 30 and the mildew-proof protective layer 40 can prevent the growth of bacteria and mildew and can improve the mildew-proof performance of the flexible cable when the flexible cable is used at sea.
In an alternative embodiment, jacket layer 30 is formed from a 105 ℃ mildewproof thermoplastic elastomer. The 105 ℃ mildew-proof thermoplastic elastomer comprises a 105 ℃ thermoplastic elastomer and a mildew-proof agent, wherein the 105 ℃ thermoplastic elastomer and the mildew-proof agent are mixed to form the 105 ℃ mildew-proof thermoplastic elastomer. The mildew preventive is one or more of 4, 5-dichloro-N-octyl-3-isothiazolinone and thiabendazole. The temperature-resistant grade of the 105 ℃ mildew-proof thermoplastic elastomer can reach 105 ℃, and when the sheath layer 30 is made of the 105 ℃ mildew-proof thermoplastic elastomer, the temperature-resistant grade of the flexible cable can be increased, so that the current-carrying capacity of the conductor 10 is improved.
The embodiment of the utility model provides a still provide a preparation method of flexible cable, include following step:
s101: a conductor 10 is provided.
The conductor 10 may be a copper conductor, an alloy conductor, or the like, and is not specifically provided here. The following description will specifically take copper conductors as an example.
In an optional embodiment, a copper rod with the outer diameter of 2.6mm is firstly drawn into copper monofilaments 111 with the diameter of 0.198 mm-0.402 mm by a multi-head wire drawing machine, the annealing temperature of the multi-head wire drawing machine is controlled to be 565-585 ℃, so that the copper monofilaments achieve the optimal toughness, strength and flexibility to adapt to repeated bending of the flexible cable during laying and using; then, a single strander or a wire bundling machine is adopted to strand a plurality of copper monofilaments 111 and aramid filaments 112 into a folded wire 11, and the tensile strength and the winding performance of the conductor 10 are improved by adding the aramid filaments 112; the last plurality of strands 11 are twisted, with the strands 11 in each layer being twisted in the same direction.
S102: an insulating layer 20 is formed on the conductor 10, and the insulating layer 20 is wrapped on the outer surface of the conductor 10.
S103: a sheathing layer 30 is formed on the insulating layer 20, and the sheathing layer 30 is wrapped on the outer surface of the insulating layer 20.
S104: the teflon paint is coated on the surface of the sheath layer 30 by a glue coating device to form the mildew-proof protective layer 40.
Specifically, the Teflon coating is coated on the surface of the sheath layer 30 by the flexible cable through a gluing device, redundant coating on the surface of the mildew-proof protective layer 40 is scraped by a doctor blade, and then is dried through a hot air pipeline, the drying of the coating is accelerated, the temperature of the hot air pipeline is 80-100 ℃, the traction speed is 20m/min, and the coating thickness is 0.4-0.6 mm.
Optionally, after the step of providing the conductor 10 and before the step of forming the insulating layer 20 on the conductor 10, the method for manufacturing a flexible cable further includes: the polyimide film material is wrapped around the outer surface of the conductor 10 in a longitudinal wrapping or wrapping manner to form the isolation layer 50.
Optionally, in the step of forming the insulating layer 20 on the conductor 10 or the isolation layer 50, the high-strength high-temperature-resistant ethylene propylene rubber alloy is extruded on a single-screw rubber extruder and wrapped on the isolation layer 50 to form the insulating layer 20.
The thickness of the insulating layer 20 is determined according to the requirement, the temperature of the single-screw rubber extruding machine is controlled to be 50-80 ℃, the production speed is 7-8 m/min, and the vulcanizing steam pressure is 1.2 MPa.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A flexible cable is characterized by comprising a conductor, an insulating layer, a sheath layer and a mildew-proof protective layer;
the insulating layer is wrapped on the outer surface of the conductor;
the sheath layer is wrapped on the outer surface of the insulating layer;
the mildew-proof protective layer is arranged on the outer surface of the sheath layer and is made of Teflon coating.
2. The flexible cable of claim 1, wherein said conductor comprises 37 strands, said conductor being twisted from 37 of said strands in the same direction;
each strand comprises 49 copper monofilaments and 5 aramid filaments, and is formed by stranding 49 copper monofilaments and 5 aramid filaments.
3. The flexible cable of claim 2, wherein the strands are circular in shape and comprise, from the inside to the outside, a first layer, a second layer, a third layer, a fourth layer, and a fifth layer, the first layer, the second layer, the third layer, the fourth layer, and the fifth layer being concentrically disposed;
the first layer comprises 1 of the copper monofilaments; the second layer comprises 4 copper monofilaments and 2 aramid filaments, and the 2 aramid filaments are uniformly arranged at intervals in the circumferential direction; the third layer comprises 9 copper monofilaments and 3 aramid filaments, and the 3 aramid filaments are uniformly arranged at intervals in the circumferential direction; the fourth layer comprises 18 of the copper monofilaments; the fifth layer comprises 17 of the copper monofilaments.
4. The flexible cable of claim 3, wherein the first, second, third, fourth, and fifth layers have the same lay direction.
5. The flexible cable of claim 1, wherein the insulating layer is made of high-strength high-temperature-resistant ethylene propylene rubber alloy.
6. The flexible cable of claim 4, wherein the insulating layer has a thickness of 1.2mm to 3 mm.
7. The flexible cable of claim 1, wherein the sheath layer is a 105 ℃ mildew resistant thermoplastic elastomer.
8. The flexible cable of claim 4, wherein the thickness of the jacket layer is 3mm to 4 mm.
9. The flexible cable of any one of claims 1-8, further comprising an insulating layer disposed between the conductor and the insulating layer.
10. The flexible cable of claim 9, wherein the insulating layer is made of a high temperature resistant polyimide film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121332507.9U CN215183139U (en) | 2021-06-15 | 2021-06-15 | Flexible cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121332507.9U CN215183139U (en) | 2021-06-15 | 2021-06-15 | Flexible cable |
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| Publication Number | Publication Date |
|---|---|
| CN215183139U true CN215183139U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121332507.9U Active CN215183139U (en) | 2021-06-15 | 2021-06-15 | Flexible cable |
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| Country | Link |
|---|---|
| CN (1) | CN215183139U (en) |
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2021
- 2021-06-15 CN CN202121332507.9U patent/CN215183139U/en active Active
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