CN209843305U - High-transmission-capacity salt-corrosion-resistant tensile power cable special for seabed - Google Patents
High-transmission-capacity salt-corrosion-resistant tensile power cable special for seabed Download PDFInfo
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- CN209843305U CN209843305U CN201920909136.2U CN201920909136U CN209843305U CN 209843305 U CN209843305 U CN 209843305U CN 201920909136 U CN201920909136 U CN 201920909136U CN 209843305 U CN209843305 U CN 209843305U
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Abstract
The utility model discloses a special high transmission capacity salt corrosion resistant tensile type power cable in seabed, cut apart the conductor including the super large cross-section, the super large cross-section is cut apart the conductor and is wrapped in proper order outward and have the two-sided waterproofing area of semiconduction, semiconduction conductor shielding layer, crosslinked polyethylene insulating layer, semiconduction insulation shielding layer, semiconduction buffering water-blocking layer, the compound area metallic shield layer of plastic-aluminum, high density polyethylene inner liner, acid and alkali-resistant anticorrosive coating coat, the enhancement layer is woven to super high molecular weight polyethylene fibre, polyimide film is around the covering, chloride ion corrosion resistant stainless steel strip armor, inorganic anticorrosive coating coat, polyphenyl ether oversheath layer, fluorocarbon coating coat. The cable has the performances of high transmission capacity, tensile strength, water pressure resistance, impact resistance, salt corrosion resistance, wear resistance, water resistance, long service life and the like, so that the cable can be widely applied to various fields of communication networks, power networks, offshore oil development, offshore wind power and the like.
Description
Technical Field
The utility model relates to a wire and cable field, concretely relates to salt corrosion resistant tensile type power cable of special high transmission capacity in seabed.
Background
The wire and cable industry has become the fundamental industry of industrial development in China, and mainly comprises power cables, electric cables, communication cables, submarine cables and the like from the field of subdivision application. Currently, the market share of power cables and communication cables is high. However, from the market segment gross benefit rate, the gross benefit rate is the highest due to the influence of factors such as the technical barriers of the submarine cables and the like. With the influence of industrial structure adjustment and transformation upgrading development in the wire and cable industry in China, submarine cables will become the main competitive direction of domestic enterprises.
The submarine cable has wide application field, and has important and wide application in the fields of submarine observation networks, communication, power networks, offshore oil development and offshore wind power. In the submarine observation network, all parts of the junction boxes, the sensors, the observation instrument equipment and the like are basically connected through submarine cables except for a small part of the junction boxes, the sensors, the observation instrument equipment and the like which adopt wireless acoustic communication. In addition, submarine cables are also widely used in many fields such as communication networks, power networks, offshore oil development, offshore wind power, and the like.
Because the submarine cable is applied to the seabed of thousands of meters deep, and the working condition is severe and complicated, the submarine cable has strict requirements on communication, electric power and service life. In terms of communication, submarine cables should have high transmission rate, capacity, reliability and transmission quality; in the aspect of electric power, the submarine cable should meet the requirements of low loss, high transmission capacity and the like, and high-voltage direct-current transmission is realized; because the submarine cable is laid out in the deep sea, the submarine cable has the advantages that the submarine cable has strong water pressure resistance, water longitudinal invasion resistance, chemical invasion resistance, salt corrosion resistance and other performances, can bear dynamic pressure under the action of sea waves, pressure during installation and maintenance and the like, can ensure relatively long service life, and has high technical requirements. Therefore, it is necessary to develop a submarine cable having high transmission quality, resistance to water pressure, water longitudinal invasion, chemical invasion, salt corrosion resistance, etc.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the special submarine high-transmission-capacity salt-corrosion-resistant tensile power cable with high transmission capacity, tensile strength, water pressure resistance, impact resistance, salt corrosion resistance, wear resistance, water resistance and long service life is provided.
In order to achieve the purpose, the utility model provides a special high-transmission-capacity salt corrosion resistant tensile power cable for seabed, which comprises an ultra-large cross section split conductor, wherein the center of the ultra-large cross section split conductor is formed by assembling a plurality of split fan-shaped conductor strand blocks, a Z-shaped conductor single-wire layer is twisted outside the whole assembled split fan-shaped conductor strand blocks, water-blocking yarns are arranged among the split fan-shaped conductor strand blocks and between the assembled split fan-shaped conductor strand blocks and the twisted conductor single-wire layer, a semi-conductive double-sided water-blocking tape with the wrapping thickness of 0.2mm is overlapped outside the ultra-large cross section split conductor, a semi-conductive conductor shielding layer, a cross-linked polyethylene insulating layer and a semi-conductive insulating shielding layer are sequentially wrapped outside the semi-conductive double-sided water-blocking tape, an aluminum-plastic composite tape metal shielding layer is wrapped outside the semi-conductive double-sided water-blocking tape, the semi-conductive double-sided water-conductive double-sectional split conductor strand blocks are hermetically welded by a hot air gun, a high-density polyethylene armor coating with the anti-corrosion film armoring layer with the thickness of 2.0mm is wrapped outside the semi-conductive inorganic ion corrosion resistant film armoring layer, an acid-alkali-resistant polyimide anticorrosive film coating is wrapped outside the high-resistant anticorrosive film armoring layer, and an acid-resistant anticorrosive film coating is wrapped outside the outer protective layer is wrapped by an acid-resistant alkali-resistant anticorrosive film armored anticorrosive film coating after the high-resistant anticorrosive film coating.
Preferably, the covering rate of the semiconductive water-blocking tape is not less than 15%.
Preferably, the nominal thickness of the semiconductive conductor shielding layer, the crosslinked polyethylene insulating layer and the semiconductive insulating shielding layer is 1.0mm, 10.5mm and 0.8mm in sequence, and the thinnest point thickness is 0.7mm, 9.35mm and 0.6mm in sequence.
Preferably, the semiconductive buffering waterproof layer is a semiconductive waterproof expansion tape, two layers of overlapped wrapping are adopted, and the covering rate is not less than 20%.
Preferably, the metal shielding layer of the aluminum-plastic composite belt is formed by longitudinally wrapping a single-side aluminum-plastic composite belt.
Preferably, the ultra-high molecular weight polyethylene fiber braided reinforcing layer is formed by sparsely winding ultra-high molecular weight polyethylene fibers with the thickness of 0.12mm ~ 0.2.2 mm, and the braiding density is not less than 50%.
Preferably, the polyimide film lapping layer adopts an overlapping lapping structure, the thickness is 0.04mm, and the lapping rate is not less than 15%.
Preferably, the chloride ion corrosion resistant stainless steel strip armor layer is formed by winding double layers of C15 chloride ion corrosion resistant stainless steel strips in a gap winding mode, and the thickness of each steel strip is 0.8 mm.
Preferably, the acid and alkali resistant anticorrosive coating layer is formed by coating ZS-1034 acid and alkali resistant anticorrosive coating.
Preferably, the inorganic anti-corrosion coating layer is formed by coating ZS-711 inorganic anti-corrosion coating.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model discloses the fan-shaped conductor strand piece periphery transposition "Z" type conductor single line of cutting apart of set, the fan-shaped conductor strand piece cross-section of cutting apart of set reaches 800 supplyes 1800mm2The added Z-shaped conductor single wire increases the whole section of the conductor, and meets the requirement of an ultra-large section; the original fan-shaped height and fan-shaped width are still less than 2 times of penetration depth, water-blocking yarns are arranged between the integrated divided fan-shaped conductor strand blocks and the twisted Z-shaped conductor single wires, and the fan-shaped conductor strand blocks and the twisted Z-shaped conductor single wires are isolated from each other, so that the adverse effects of the skin effect and the proximity effect are reduced to the minimum extent although the conductor section is greatly increased, and the transmission capacity of the wire is greatly improved; the Z-shaped conductor single wires are self-supporting structures, the structure is stable, gaps do not exist among the conductor single wires, and the requirement that the connection among the conductor single wires is tighter can be met without pressing; the self-supporting structure has a tightening effect on the assembled segmented fan-shaped conductor strand blocks inside, does not need to be tightened by other strips, has a stable structure, cannot be loosened, displaced or shifted, and has high roundness of the periphery of the whole segmented conductor;
2. the cable adopts water-blocking yarns, a semi-conductive water-blocking tape, a semi-conductive buffer water-blocking tape, a longitudinally-wrapped aluminum-plastic composite tape, a high-density polyethylene inner liner layer and a polyphenyl ether outer sheath (with outstanding water resistance, better wear resistance and electrical property, good dimensional stability, excellent mechanical strength, stress relaxation resistance, creep resistance and heat resistance), so that the cable has good longitudinal and radial water-blocking effects and can be operated in the seabed for a long time;
3. the cable is added with the ultra-high molecular weight polyethylene fiber braided reinforcing layer, the material has low density and elongation at break, outstanding impact resistance and cutting resistance, and strong capacity of absorbing energy, the strength is more than ten times of that of steel wires with the same section, the bending life and tensile strength of the wire are greatly improved, and the cable can bear dynamic pressure under the action of sea waves and the dynamic pressure during installation;
4. the cable uses an acid-base-resistant anticorrosive coating layer, and the material is used in an organic acid, inorganic acid, salt and alkaline solution corrosion environment, has high compactness and hardness, good impact resistance, good adhesion and high thermal shock resistance coefficient, can effectively shield the permeation of gas and corrosive liquid, and can protect the inner layer of the cable for a long time;
5. the cable is additionally provided with a C15 chloride ion corrosion-resistant stainless steel strip armor layer, the material is stainless steel developed aiming at seawater and other chloride ion-containing medium corrosion, the material has pitting corrosion resistance and crevice corrosion resistance, the corrosion resistance is better than 18-8Ti, and 316 stainless steel is obtained; in addition, a ZS-711 inorganic anticorrosive coating layer is coated on the stainless steel strip, the material has good impermeability to corrosive media, good adhesion to the surface of steel, seawater resistance, salt mist resistance, oil resistance, chemical resistance, ultraviolet resistance and the like, can play a role in comprehensively protecting against various corrosion of the ocean, and has strong adhesion, high coating hardness, wear resistance, impact resistance, acid and alkali resistance, long aging time and long service life, so that the C15 stainless steel strip can be applied to seawater for a long time;
6. the outermost layer of the cable is coated with a layer of fluorocarbon coating which has excellent corrosion resistance, self-cleaning property, strong adhesion and super-long weather resistance, the coating contains a large number of F-C bonds, so that the super-strong stability of the coating is determined, the coating is not pulverized and faded, the service performance of the coating is more excellent than that of any other coating, and the service life of the cable at the sea bottom is greatly prolonged;
7. to sum up 1-6, the utility model relates to a brand-new cable structure has overcome the defect in the background art for the cable has high transmission capacity, tensile, water pressure resistance, shock-resistant, salt corrosion resistance, stand wear and tear, waterproof, performance such as longe-lived, makes this cable can wide application in a great deal of fields such as communication network, power network, offshore oil development, offshore wind power.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further clarified by the following description with reference to the attached drawings and specific examples, which should be understood as being merely illustrative of the present invention and not limiting the scope of the present invention, and modifications of various equivalent forms of the present invention by those skilled in the art after reading the present invention, all fall within the scope defined by the appended claims of the present application.
As shown in fig. 1, the utility model provides a special high transmission capacity salt corrosion resistant tensile power cable for seabed, which comprises a split conductor 1 with an ultra-large cross section, wherein the center of the split conductor with the ultra-large cross section is formed by assembling a plurality of split fan-shaped conductor strand blocks 2; a Z-shaped conductor single-wire layer 3 is stranded outside the whole set division fan-shaped conductor strand block 2; water-blocking yarns 4 are arranged among the divided fan-shaped conductor strand blocks and among the integrated divided fan-shaped conductor strand blocks and the stranded conductor single-wire layer; the sector conductor strand blocks and the twisted Z-shaped conductor single wires are isolated from each other through water-blocking powder or water-blocking yarns, so that the segmentation effect is still obvious even though the section of the conductor is greatly increased, the adverse effects of the skin effect and the proximity effect are reduced to the minimum, and the transmission capacity of the lead is greatly improved;
the ultra-large section split conductor is externally overlapped and wrapped with a semi-conductive double-sided water-blocking tape 5 with the thickness of 0.2mm, the lapping rate is not less than 15%, the semi-conductive conductor shielding layer 6 with the thickness of 1.0mm, a crosslinked polyethylene insulating layer 7 with the thickness of 10.5mm and a semi-conductive insulating shielding layer 8 with the thickness of 0.8mm are sequentially wrapped outside the semi-conductive double-sided water-blocking tape, the thinnest point thicknesses of the semi-conductive conductor shielding layer 6, the semi-conductive buffer water-blocking layer 9 and the semi-conductive buffer water-blocking layer 8 are sequentially wrapped with a semi-conductive aluminum plastic composite tape longitudinally wrapped aluminum-plastic composite tape metal shielding layer 10 and are welded at the butt joint by a hot air gun in a sealing mode, the aluminum-plastic composite tape metal shielding layer is wrapped with a high-density polyethylene inner liner 11 with the thickness of 2.0mm, the high-density polyethylene inner liner 12 and the high-density polyethylene inner liner is wrapped with a ZS-1034 anticorrosive coating, the high-corrosion-resistant anticorrosive coating is coated with a super-resistant anticorrosive coating 12 and alkali-resistant anticorrosive coating, the super-resistant corrosion-resistant anticorrosive coating is 0.8mm, the super-resistant anticorrosive coating is used for organic acid, inorganic acid, salt, alkali-resistant solution, alkali-resistant corrosion resistant.
In order to further provide the performance of the cable, the ultra-high molecular weight polyethylene fiber braided reinforcing layer is formed by sparsely winding ultra-high molecular weight polyethylene fibers with the thickness of 0.12mm ~ 0.2.2 mm, the braided density is not less than 50%, the material has low density and elongation at break, outstanding impact resistance and cutting resistance, and strong capacity of absorbing energy, the strength is more than ten times of that of steel wires with the same section, the bending life and tensile strength of the wire are greatly improved, and the cable can bear dynamic pressure under the action of sea waves and the dynamic pressure during installation;
the chloride ion corrosion resistant stainless steel strip armor layer is formed by wrapping double layers of C15 chloride ion corrosion resistant stainless steel strips in a clearance mode, the thickness of the steel strips is 0.8mm, the material is stainless steel developed aiming at seawater and corrosion of other chloride ion-containing media, the material has the performances of point corrosion resistance and gap corrosion resistance, the corrosion resistance far exceeds 18-8Ti, and the material is stainless steel obtained by 316; the stainless steel strip is coated with a ZS-711 inorganic anticorrosive coating layer, the material has good impermeability to corrosive media, good adhesion to the steel surface, seawater resistance, salt mist resistance, oil resistance, chemical resistance, ultraviolet resistance and the like, can play a role in comprehensively protecting various corrosion of the ocean, and has strong adhesion, high coating hardness, wear resistance, impact resistance, acid and alkali resistance, long aging time, so that the C15 stainless steel strip can be applied to seawater for a long time;
the improvement enables the electric wire to have excellent performances such as high transmission capacity, tensile strength, water pressure resistance, impact resistance, salt corrosion resistance, wear resistance, water resistance, long service life and the like, so that the cable can be widely applied to various fields such as communication networks, power networks, offshore oil development, offshore wind power and the like.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the principle of the present invention, and these should also be considered as belonging to the protection scope of the present invention.
Claims (9)
1. A submarine special high-transmission-capacity salt corrosion resistant tensile power cable is characterized by comprising an oversized cross-section segmented conductor, wherein the center of the oversized cross-section segmented conductor is formed by assembling a plurality of segmented fan-shaped conductor strand blocks, Z-shaped conductor single-wire layers are stranded outside the segmented fan-shaped conductor strand blocks, water-blocking yarns are arranged among the segmented fan-shaped conductor strand blocks and between the assembled segmented fan-shaped conductor strand blocks and the stranded conductor single-wire layers, a semi-conductive double-sided water-blocking tape with the wrapping thickness of 0.2mm is overlapped outside the oversized cross-section segmented conductor, a semi-conductive conductor shielding layer, a cross-linked polyethylene insulating layer and a semi-conductive insulating shielding layer are sequentially wrapped outside the semi-conductive double-sided water-blocking tape, a semi-conductive buffer water-blocking layer is wrapped outside the semi-conductive buffer water-blocking tape, a metal shielding layer of an aluminum-plastic composite tape is sealed and welded by a hot air gun, a high-density polyethylene inner lining layer with the aluminum-plastic composite tape metal shielding layer, a high-density polyethylene inner lining layer with the wrapping thickness of 2.0mm is wrapped outside the aluminum-plastic composite tape metal shielding layer, an anti-corrosive film inner lining coating layer is a corrosion resistant polyimide ion corrosion resistant coating with the corrosion resistant coating layer, and an acid-alkali corrosion resistant polyimide ion corrosion resistant coating layer is wrapped outside the aluminum corrosion resistant armored steel tape with the wrapping inorganic armor coating layer with the thickness of 355 mm, and the corrosion resistant polyimide ion armored steel tape, and the corrosion resistant inorganic armor coating layer, the corrosion resistant fiber corrosion.
2. The submarine dedicated high-transmission-capacity salt-corrosion-resistant tensile power cable according to claim 1, wherein: the covering rate of the semi-conductive water-blocking tape is not less than 15%.
3. The submarine dedicated high-transmission-capacity salt-corrosion-resistant tensile power cable according to claim 1, wherein: the nominal thickness of the semiconductive conductor shielding layer, the crosslinked polyethylene insulating layer and the semiconductive insulating shielding layer is 1.0mm, 10.5mm and 0.8mm in sequence, and the thickness of the thinnest point is 0.7mm, 9.35mm and 0.6mm in sequence.
4. The submarine dedicated high-transmission-capacity salt-corrosion-resistant tensile power cable according to claim 1, wherein: the semi-conductive buffer water-blocking layer is a semi-conductive water-blocking expansion belt, two layers of overlapping wrapping are adopted, and the covering rate is not less than 20%.
5. The submarine dedicated high-transmission-capacity salt-corrosion-resistant tensile power cable according to claim 1, wherein: the metal shielding layer of the aluminum-plastic composite belt is formed by longitudinally wrapping a single-side aluminum-plastic composite belt.
6. The submarine special high-transmission-capacity salt-corrosion-resistant tensile power cable according to claim 1, wherein the braided reinforcing layer of ultra-high molecular weight polyethylene fibers is formed by sparsely winding ultra-high molecular weight polyethylene fibers with the thickness of 0.12mm ~ 0.2.2 mm, and the braiding density is not less than 50%.
7. The submarine dedicated high-transmission-capacity salt-corrosion-resistant tensile power cable according to claim 1, wherein: the polyimide film lapping layer adopts an overlapped lapping structure, the thickness is 0.04mm, and the lapping rate is not less than 15%.
8. The submarine dedicated high-transmission-capacity salt-corrosion-resistant tensile power cable according to claim 1, wherein: the chloride ion corrosion resistant stainless steel strip armor layer is formed by wrapping double layers of C15 chloride ion corrosion resistant stainless steel strips in a gap wrapping mode, and the thickness of each steel strip is 0.8 mm.
9. The submarine dedicated high-transmission-capacity salt-corrosion-resistant tensile power cable according to claim 1, wherein: the polyphenyl ether outer sheath layer is formed by extruding and wrapping high-strength engineering plastic polyphenyl ether.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820467A (en) * | 2021-01-29 | 2021-05-18 | 杭州电缆股份有限公司 | Preparation method of 10kV medium-strength aluminum alloy molded line water-blocking overhead insulated conductor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820467A (en) * | 2021-01-29 | 2021-05-18 | 杭州电缆股份有限公司 | Preparation method of 10kV medium-strength aluminum alloy molded line water-blocking overhead insulated conductor |
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