WO2018223827A1 - Ultra-large cross-section high-voltage low-loss combined optical-fiber submarine cable and manufacturing method thereof - Google Patents
Ultra-large cross-section high-voltage low-loss combined optical-fiber submarine cable and manufacturing method thereof Download PDFInfo
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- WO2018223827A1 WO2018223827A1 PCT/CN2018/087259 CN2018087259W WO2018223827A1 WO 2018223827 A1 WO2018223827 A1 WO 2018223827A1 CN 2018087259 W CN2018087259 W CN 2018087259W WO 2018223827 A1 WO2018223827 A1 WO 2018223827A1
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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
- H01B7/14—Submarine cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
- H01B13/245—Sheathing; Armouring; Screening; Applying other protective layers by extrusion of metal layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
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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
- H01B7/28—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
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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
- H01B7/28—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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/005—Power cables including optical transmission elements
Definitions
- the invention relates to the technical field of submarine cable preparation, in particular to an ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable and a preparation method thereof, and the prepared cable can be used as a 10-core submarine power cable of 10 to 750 kV.
- the common optical fiber composite three-core submarine power cable such as the submarine power cable disclosed in the announcement number CN 202394580 U and the composite cable disclosed in the announcement number CN 201984890 U.
- the cable core of the former is composed of a water blocking conductor and an inner shielding layer, an insulating layer, an outer shielding layer and a water blocking buffer layer which are sequentially disposed outside the water blocking conductor, and a cable unit is disposed in the gap of the cable core, and a space around the cable unit is provided.
- Filled with a filler, the filler and the power cable are sequentially provided with a wrapping tape, an inner cushion layer, an armor layer and an outer layer; the latter core comprises a stranded insulated core and a filling strip; The strip is provided with an axially slotted slotted hole; the fiber slot unit is disposed in the slotted hole.
- the existing processing technology of the optical fiber composite three-core submarine power cable is complicated, and the optical unit in the cable forming process is very vulnerable to the torsion of the cable core, causing damage to the optical unit; the thermal resistance loss is large, and the transmission is long-distance sea-line cable. The loss is large.
- the armored layer structure is single, the seabed section and the landing section external ambient temperature are different, the matching of the submarine cable and the landing section cable current carrying capacity is not enough; the cable filling does not have the conductive function, and the lead sleeve and the armored equipotential are difficult to achieve, The thermal resistance is large.
- the technical problem to be solved by the present invention is to provide an ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable and a preparation method thereof, which can solve the above-mentioned deficiencies of the existing three-core cable.
- a technical solution adopted by the present invention is to provide an ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable, comprising: a cable core, a light unit, a filler strip, and a sheath, light, and the like.
- the cable core is sequentially blocked by a water blocking conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, and a water blocking buffer from the inside to the outside
- the layer, the lead sleeve and the outer sheath are formed;
- the cable core has a plurality of cores and is twisted to form a center hole, and the light unit is placed in the center hole.
- the filler strip is a semiconductor material that forms an equipotential with the lead sleeve and the armor layer.
- the conductor, the water blocking pressed circular configuration, the maximum cross-sectional area of filaments twisted 30mm 2, the maximum cross-sectional area of 3500mm 2, pressed coefficient was 97.5%.
- the insulating layer has a minimum eccentricity of no more than 1.3% and a maximum withstand voltage of 750 kV.
- the armor layer comprises a steel wire armor layer and a copper wire armor layer which are alternately connected in sequence, wherein the steel wire armor layer is coated on the sea bottom section of the cable.
- the copper wire armor layer is wrapped around the landing section of the cable.
- another technical solution adopted by the present invention is to provide a method for preparing an ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable, comprising the following steps:
- Preparing the cable core comprising preparing a water-blocking conductor, three-layer co-extruding to prepare a conductor shielding layer, an insulating layer and an insulating shielding layer, eliminating the stress and then wrapping the water-blocking buffer layer, extruding the lead sleeve, and extruding the outer sheath, Obtaining the cable core;
- a light-integrating unit is built into the center hole formed by the cable, and a water-blocking conductor is disposed, and then the inner liner is wrapped, the armor is wrapped, and the outer layer is finally wrapped to obtain the submarine cable.
- the water-blocking conductor is prepared by first drawing and annealing with a giant puller to obtain a monofilament, and then penetrating the monofilament into the 127.
- the wire stranding machine is placed in a circular nano-mold, and then a water-blocking material is added thereto, and the circular water-blocking conductor is pressed by twisting.
- the three-layer co-extrusion preparation of the conductor shielding layer, the insulating layer and the insulating shielding layer adopts a vertical cross-linking production line and is extruded through a cone head. It is obtained that the highest voltage of the obtained insulating layer is 750 kV, and the minimum eccentricity is not more than 1.3%.
- the invention has the beneficial effects that the preparation method of the ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable adopts the advanced production equipment, improves the production efficiency of the submarine cable and the quality of the finished product, and the prepared submarine cable has the following advantages. :
- the light unit is placed in the central hole after the cable core is cabled, which ensures that the light unit is completely unstressed during the production and laying process, and effectively protects the light unit; in addition, the light unit can completely avoid moisture, sunlight, Erosion of smoke, etc.; suitable for various types of cables, providing communication, temperature measurement, monitoring and other functions;
- the filling strip is made of semiconductor material, which forms an equipotential between the lead sleeve and the armor layer, which effectively reduces the thermal resistance loss during transmission and helps to alleviate the global energy crisis;
- the structural design of the armor layer achieves the same current carrying capacity of the entire cable.
- FIG. 1 is a schematic cross-sectional view showing a preferred embodiment of a super large cross section high voltage low loss optical fiber composite submarine cable according to the present invention
- FIG. 2 is a flow chart showing a process for preparing an ultra-large cross-section high voltage and low loss optical fiber composite submarine cable
- an embodiment of the present invention includes:
- An ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable comprising a plurality of (three or more) cable cores, which are sequentially composed of a water blocking conductor 1, a conductor shielding layer 2, an insulating layer 3, and an insulating shielding layer from the inside to the outside. 4.
- the water blocking buffer layer 5, the lead sleeve 6 and the outer sheath 7 are formed; the cores are cross-linked and twisted together, a central hole is formed between the cores, and the light unit 8 is placed in the central hole, and the submarine cable is During the production and laying process, the light unit is completely unstressed and can be effectively protected from damage.
- the filling strip 10 is filled in the center hole and the outer circumference of each of the cores, and the outer side thereof is sequentially coated with a tape 9, an inner liner 11, an armor layer 12 and an outer layer 13.
- the filling strip 10 is made of a semiconductor material, and is connected with the short wires of the lead sleeve 6 and the armor layer 12 to form an equipotential between the lead sleeve 6 and the armor layer 12, that is, the lead sleeve 6, the filling strip 10, and
- the equipotential is formed between the armor layers 12, which can reduce the loss of thermal resistance during transmission, that is, reduce the line loss, which can effectively alleviate the global energy crisis; in addition, the induced potential can be eliminated, and the device and the person are superimposed due to the induced potential Hazard.
- the insulating layer 3 has a minimum eccentricity of not more than 1.3% and a maximum withstand voltage of 750 kV.
- the armor layer 12 adopts a structure of copper wire + steel wire + copper wire, that is, a steel wire armor layer and a copper wire armor layer which are alternately connected in sequence, wherein the steel wire armor layer is coated on the sea bottom section of the cable
- the copper wire armor layer is wrapped in the landing section of the cable. Since the submarine cable is generally divided into a sea bottom section and a landing section, and the seabed is different from the land environment (the land temperature is high and the thermal resistance is large), in order to achieve the same current carrying capacity of the whole cable, the sea bottom section is equipped with a steel wire armor with a large thermal resistance coefficient.
- the landing section adopts a copper wire armor with a thermal resistance coefficient smaller than that of the steel wire, so that the current carrying capacity of the whole cable can be consistent.
- the submarine cable can be used in a high-voltage environment of 750V, and the operation load monitoring and fault point positioning are performed at the same time.
- the method for preparing the above-mentioned ultra-high-section high-voltage low-loss optical fiber composite submarine cable comprises the following steps:
- Preparing a water-blocking conductor firstly drawing with a giant puller and annealing to obtain a monofilament, then inserting the obtained monofilament into a 127-disc stranding machine and placing it into a circular nano-mold, and then adding a water-blocking material thereto,
- the circular water blocking conductor is compacted by stranding;
- the obtained water blocking conductor has larger specification, wider coverage area and higher compression coefficient, specifically, the maximum stranded single wire cross-sectional area reaches 30 mm 2 , and the maximum cross-sectional area Up to 3500mm 2 , the compression coefficient is 97.5%;
- Three-layer co-extrusion preparation of conductor shielding layer, insulating layer and insulating shielding layer a vertical cross-linking production line is used, and the conductor shielding layer, the insulating layer and the insulating shielding layer are respectively extruded through three extruders, and then the conductor shielding layer, The insulating layer and the insulating shielding layer are extruded through a tapered head to obtain a three-layer co-extruded structure of the conductor shielding layer, the insulating layer and the insulating shielding layer, which ensures the eccentricity of the insulating layer and the purity of the insulation, specifically, the obtained
- the maximum voltage of the insulating layer is 750kV, and the minimum eccentricity is not more than 1.3%;
- the closed tray eliminates the stress, the wrapping machine wraps the water blocking buffer layer, the lead machine extrudes the lead sleeve, and the extruder extrudes the outer sheath to obtain the cable core;
- the cable cores are cross-linked by vertical cable-forming and joint-opening machines to form a central hole between the cores, and two or two tangent-cuts between the cores on any section after cable-forming contact;
- a light-integrated unit is built into the center hole formed by the cable, and a water-blocking conductor is arranged, and then the inner liner is wrapped, armored, and finally wrapped around the outer layer.
- the submarine cable In the vertical cable-forming and joint-opening machine, a light-integrated unit is built into the center hole formed by the cable, and a water-blocking conductor is arranged, and then the inner liner is wrapped, armored, and finally wrapped around the outer layer.
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Abstract
An ultra-large cross-section high-voltage low-loss combined optical-fiber submarine cable and a manufacturing method thereof are provided. The submarine cable comprises cable cores, an optical unit (8), a filling strip (10), and a sequentially coated tape (9), inner liner layer (11), armor layer (12), and outer layer (13). The cable core comprises, from the inside to the outside, a water blocking conductor (1), a conductor shielding layer (2), an insulating layer (3), an insulating shielding layer (4), a water blocking buffer layer (5), a lead sleeve (6), and an outer sheath (7). The cable cores are twisted to form a central hole, and the optical unit (8) is disposed in the central hole. The present technical solution adopts an advanced production apparatus to improve production efficiency and product quality of submarine cables. The submarine cables manufactured thereby have the following advantages: an optical unit is disposed in a central hole after the cable cores are formed into a cable, and the optical unit is not subject to forces during production and laying; a filling strip is made of a semiconductor material to form an equipotential between a lead sleeve and an armor layer, effectively reducing thermal resistance loss during transmission, and helping alleviate the global energy crisis; and the structural design of the armor layer causes the current carrying capacity to be the same for the entire cable.
Description
本发明涉及海底电缆制备技术领域,特别是涉及一种超大截面高电压低损耗光纤复合海底电缆及其制备方法,所制备的电缆可作为10~750kV三芯海底电力电缆The invention relates to the technical field of submarine cable preparation, in particular to an ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable and a preparation method thereof, and the prepared cable can be used as a 10-core submarine power cable of 10 to 750 kV.
目前常见的光纤复合三芯海底电力电缆,如公告号为CN 202394580 U公开的海底电力电缆和公告号为CN 201984890 U公开的复合电缆。前者的缆芯由阻水导体和依次设置于阻水导体外的内屏蔽层、绝缘层、外屏蔽层和阻水缓冲层构成,电缆缆芯的间隙中设置有光缆单元,光缆单元四周的空隙中填充有填充物,填充物和电力电缆外依次设置有绕包带、内垫层、铠装层和外被层;后者的缆芯包括绞合的绝缘线芯和填充条;所述填充条上设置有轴向开槽的开槽孔;所述开槽孔内设置光纤单元。At present, the common optical fiber composite three-core submarine power cable, such as the submarine power cable disclosed in the announcement number CN 202394580 U and the composite cable disclosed in the announcement number CN 201984890 U. The cable core of the former is composed of a water blocking conductor and an inner shielding layer, an insulating layer, an outer shielding layer and a water blocking buffer layer which are sequentially disposed outside the water blocking conductor, and a cable unit is disposed in the gap of the cable core, and a space around the cable unit is provided. Filled with a filler, the filler and the power cable are sequentially provided with a wrapping tape, an inner cushion layer, an armor layer and an outer layer; the latter core comprises a stranded insulated core and a filling strip; The strip is provided with an axially slotted slotted hole; the fiber slot unit is disposed in the slotted hole.
现有这种光纤复合三芯海底电力电缆的加工工艺复杂,成缆过程中光单元非常容易受到缆芯的扭力破坏,造成光单元损伤;热阻损耗较大,针对长距离海缆传输,电能损失大。另外,铠装层结构单一,海底段与登陆段外部环境温度不同,海底电缆与登陆段电缆载流量的匹配性不够;成缆填充不具有导电功能,铅套与铠装等电位较难实现,热阻较大。The existing processing technology of the optical fiber composite three-core submarine power cable is complicated, and the optical unit in the cable forming process is very vulnerable to the torsion of the cable core, causing damage to the optical unit; the thermal resistance loss is large, and the transmission is long-distance sea-line cable. The loss is large. In addition, the armored layer structure is single, the seabed section and the landing section external ambient temperature are different, the matching of the submarine cable and the landing section cable current carrying capacity is not enough; the cable filling does not have the conductive function, and the lead sleeve and the armored equipotential are difficult to achieve, The thermal resistance is large.
发明内容Summary of the invention
本发明主要解决的技术问题是提供一种超大截面高电压低损耗光纤复合海底电缆及制备方法,能够解决现有三芯电缆存在的上述不足之处。The technical problem to be solved by the present invention is to provide an ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable and a preparation method thereof, which can solve the above-mentioned deficiencies of the existing three-core cable.
为解决上述技术问题,本发明采用的一个技术方案是:提供一种超大截面高电压低损耗光纤复合海底电缆,包括:缆芯、光单元、填充条以及依次包覆在所述缆芯、光单元和填充条外侧的包带、内衬层、铠装层和外被层;其中,所述缆芯自内向外依次由阻水导体、导体屏蔽层、绝缘层、绝缘屏蔽层、阻水缓冲层、铅套和外护套构成;所述缆芯有多个,且绞合形成中心孔,所述光单元放置在所述中心孔内。In order to solve the above technical problem, a technical solution adopted by the present invention is to provide an ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable, comprising: a cable core, a light unit, a filler strip, and a sheath, light, and the like. a belt, an inner liner layer, an armor layer and an outer layer on the outer side of the unit and the filler strip; wherein the cable core is sequentially blocked by a water blocking conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, and a water blocking buffer from the inside to the outside The layer, the lead sleeve and the outer sheath are formed; the cable core has a plurality of cores and is twisted to form a center hole, and the light unit is placed in the center hole.
在本发明一个较佳实施例中,所述填充条为半导体材质,其与所述铅套和铠装层之间形成等电位。In a preferred embodiment of the invention, the filler strip is a semiconductor material that forms an equipotential with the lead sleeve and the armor layer.
在本发明一个较佳实施例中,所述阻水导体采用紧压圆形结构,其最大绞合单丝截面积达30mm
2,最大截面积达3500mm
2,紧压系数达97.5%。
In a preferred embodiment of the present invention, the conductor, the water blocking pressed circular configuration, the maximum cross-sectional area of filaments twisted 30mm 2, the maximum cross-sectional area of 3500mm 2, pressed coefficient was 97.5%.
在本发明一个较佳实施例中,所述绝缘层的最小偏心度不大于1.3%,其最高耐电压750kV。In a preferred embodiment of the invention, the insulating layer has a minimum eccentricity of no more than 1.3% and a maximum withstand voltage of 750 kV.
在本发明一个较佳实施例中,所述铠装层包括依次交替相接的钢丝铠装层和铜丝铠装层,其中,所述钢丝铠装层包覆在所述电缆的海底段,所述铜丝铠装层包覆在所述电缆的登陆段。In a preferred embodiment of the present invention, the armor layer comprises a steel wire armor layer and a copper wire armor layer which are alternately connected in sequence, wherein the steel wire armor layer is coated on the sea bottom section of the cable. The copper wire armor layer is wrapped around the landing section of the cable.
为解决上述技术问题,本发明采用的另一个技术方案是:提供一种超大截面高电压低损耗光纤复合海底电缆的制备方法,包括如下步骤:In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a method for preparing an ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable, comprising the following steps:
(1)制备缆芯:包括制备阻水导体,三层共挤制备导体屏蔽层、绝缘层和绝缘屏蔽层,消除应力再绕包阻水缓冲层,挤出铅套,挤出外护套,得到所述 缆芯;(1) Preparing the cable core: comprising preparing a water-blocking conductor, three-layer co-extruding to prepare a conductor shielding layer, an insulating layer and an insulating shielding layer, eliminating the stress and then wrapping the water-blocking buffer layer, extruding the lead sleeve, and extruding the outer sheath, Obtaining the cable core;
(2)成缆:将所述缆芯交联,使各缆芯之间形成中心孔,且成缆后任意截面上各缆芯之间两两相切式接触;(2) Cabling: cross-linking the cable cores to form a central hole between the cores, and two-to-two contact between the cores on any section after the cable is formed;
(3)向成缆形成的中心孔内置入光单元,并设置阻水导体,然后绕包内衬层、铠装,最后绕包外被层,得到所述海底电缆。(3) A light-integrating unit is built into the center hole formed by the cable, and a water-blocking conductor is disposed, and then the inner liner is wrapped, the armor is wrapped, and the outer layer is finally wrapped to obtain the submarine cable.
在本发明一个较佳实施例中,所述步骤(1)中,所述阻水导体的制备方法为:先用巨拉机拉丝并退火,得到单丝,然后将所述单丝穿入127盘绞线机并置入圆形纳米模具内,再向其中加入阻水材料,经绞合制得紧压圆形阻水导体。In a preferred embodiment of the present invention, in the step (1), the water-blocking conductor is prepared by first drawing and annealing with a giant puller to obtain a monofilament, and then penetrating the monofilament into the 127. The wire stranding machine is placed in a circular nano-mold, and then a water-blocking material is added thereto, and the circular water-blocking conductor is pressed by twisting.
在本发明一个较佳实施例中,所述步骤(1)中,所述三层共挤制备导体屏蔽层、绝缘层和绝缘屏蔽层采用立式交联生产线,并通过锥形机头挤出得到,所得绝缘层的最高电压达750kV,其最小偏心度不大于1.3%。In a preferred embodiment of the present invention, in the step (1), the three-layer co-extrusion preparation of the conductor shielding layer, the insulating layer and the insulating shielding layer adopts a vertical cross-linking production line and is extruded through a cone head. It is obtained that the highest voltage of the obtained insulating layer is 750 kV, and the minimum eccentricity is not more than 1.3%.
本发明的有益效果是:本发明一种超大截面高电压低损耗光纤复合海底电缆的制备方法,采用先进的生产设备,提高了海底电缆的生产效率及成品质量,其制备的海底电缆具有如下优点:The invention has the beneficial effects that the preparation method of the ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable adopts the advanced production equipment, improves the production efficiency of the submarine cable and the quality of the finished product, and the prepared submarine cable has the following advantages. :
1.光单元放置在缆芯成缆后的中心孔内,保证了光单元在生产及敷设过程中完全不受力,对光单元进行有效的保护;另外,光单元可以完全避免潮气、阳光、烟雾等的侵蚀;适用于多种类型电缆、提供通信、测温、监控等多种功能;1. The light unit is placed in the central hole after the cable core is cabled, which ensures that the light unit is completely unstressed during the production and laying process, and effectively protects the light unit; in addition, the light unit can completely avoid moisture, sunlight, Erosion of smoke, etc.; suitable for various types of cables, providing communication, temperature measurement, monitoring and other functions;
2.填充条采用半导体材质,使铅套和铠装层之间形成等电位,有效减少传输过程中的热阻损耗,有助于缓解全球能源危机;2. The filling strip is made of semiconductor material, which forms an equipotential between the lead sleeve and the armor layer, which effectively reduces the thermal resistance loss during transmission and helps to alleviate the global energy crisis;
3.铠装层的结构设计实现了整根电缆的载流量一致。3. The structural design of the armor layer achieves the same current carrying capacity of the entire cable.
图1是本发明一种超大截面高电压低损耗光纤复合海底电缆一较佳实施例的截面结构示意图;1 is a schematic cross-sectional view showing a preferred embodiment of a super large cross section high voltage low loss optical fiber composite submarine cable according to the present invention;
图2是所示超大截面高电压低损耗光纤复合海底电缆的制备工艺流程图;2 is a flow chart showing a process for preparing an ultra-large cross-section high voltage and low loss optical fiber composite submarine cable;
附图中各部件的标记如下:1.阻水导体,2.导体屏蔽层,3.绝缘层,4.绝缘屏蔽层,5.阻水缓冲层,6.铅套,7.外护套,8.光单元,9.包带,10.填充条,11.内衬层,12.铠装层,13.外被层。The components of the drawings are marked as follows: 1. water blocking conductor, 2. conductor shielding layer, 3. insulating layer, 4. insulating shielding layer, 5. water blocking buffer layer, 6. lead sleeve, 7. outer sheath, 8. Light unit, 9. Tape, 10. Filler strip, 11. Inner liner, 12. Armor layer, 13. Outer layer.
下面结合附图对本发明的较佳实施例进行详细阐述,以使本发明的优点和特征能更易于被本领域技术人员理解,从而对本发明的保护范围做出更为清楚明确的界定。The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings, in which the advantages and features of the invention can be more readily understood by those skilled in the art.
请参阅图1和图2,本发明实施例包括:Referring to FIG. 1 and FIG. 2, an embodiment of the present invention includes:
实施例1Example 1
一种超大截面高电压低损耗光纤复合海底电缆,包括多个(3个以上)缆芯,所述缆芯自内向外依次由阻水导体1、导体屏蔽层2、绝缘层3、绝缘屏蔽层4、阻水缓冲层5、铅套6和外护套7构成;各缆芯交联绞合在一起,各缆芯之间形成中心孔,光单元8放置在该中心孔内,在海底电缆的生产及敷设过程中光单元完全不受力,可对其进行有效的保护而不被破坏。填充条10填充在所述中心孔内及各缆芯的外周,其外侧又依次包覆有包带9、内衬层11、铠装层12和外 被层13。An ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable comprising a plurality of (three or more) cable cores, which are sequentially composed of a water blocking conductor 1, a conductor shielding layer 2, an insulating layer 3, and an insulating shielding layer from the inside to the outside. 4. The water blocking buffer layer 5, the lead sleeve 6 and the outer sheath 7 are formed; the cores are cross-linked and twisted together, a central hole is formed between the cores, and the light unit 8 is placed in the central hole, and the submarine cable is During the production and laying process, the light unit is completely unstressed and can be effectively protected from damage. The filling strip 10 is filled in the center hole and the outer circumference of each of the cores, and the outer side thereof is sequentially coated with a tape 9, an inner liner 11, an armor layer 12 and an outer layer 13.
其中,所述填充条10为半导体材质,其与铅套6和铠装层12的短接线连接,使铅套6和铠装层12之间形成等电位,即铅套6、填充条10和铠装层12之间形成等电位,可以减少传输过程中热阻的损耗,即减小线路损耗,可有效缓解全球能源危机;另外,还可消除感应电势,降低因感应电势叠加对设备和人的危害。Wherein, the filling strip 10 is made of a semiconductor material, and is connected with the short wires of the lead sleeve 6 and the armor layer 12 to form an equipotential between the lead sleeve 6 and the armor layer 12, that is, the lead sleeve 6, the filling strip 10, and The equipotential is formed between the armor layers 12, which can reduce the loss of thermal resistance during transmission, that is, reduce the line loss, which can effectively alleviate the global energy crisis; in addition, the induced potential can be eliminated, and the device and the person are superimposed due to the induced potential Hazard.
所述阻水导体1采用紧压圆形结构,其规格更大、覆盖范围更广、紧压系数更高,具体地,其最大绞合单丝截面积达30mm
2,最大截面积达3500mm
2,紧压系数达97.5%。
The use of a compact circular conductor water-blocking structure, its larger size, wider coverage, higher coefficient pressed, in particular, the maximum cross-sectional area of filaments twisted 30mm 2, the maximum cross-sectional area of 3500mm 2 The compression factor is 97.5%.
所述绝缘层3的最小偏心度不大于1.3%,其最高耐电压750kV。The insulating layer 3 has a minimum eccentricity of not more than 1.3% and a maximum withstand voltage of 750 kV.
所述铠装层12采用铜丝+钢丝+铜丝的结构,即包括依次交替相接的钢丝铠装层和铜丝铠装层,其中,所述钢丝铠装层包覆在电缆的海底段,铜丝铠装层包覆在电缆的登陆段。由于海底电缆一般分为海底段和登陆段,而海底与陆地环境不同(陆地温度偏高,热阻大),为实现整根电缆的载流量一致,海底段采用热阻系数大的钢丝铠装,登陆段采用热阻系数小于钢丝的铜丝铠装,可以实现整根电缆的载流量一致。The armor layer 12 adopts a structure of copper wire + steel wire + copper wire, that is, a steel wire armor layer and a copper wire armor layer which are alternately connected in sequence, wherein the steel wire armor layer is coated on the sea bottom section of the cable The copper wire armor layer is wrapped in the landing section of the cable. Since the submarine cable is generally divided into a sea bottom section and a landing section, and the seabed is different from the land environment (the land temperature is high and the thermal resistance is large), in order to achieve the same current carrying capacity of the whole cable, the sea bottom section is equipped with a steel wire armor with a large thermal resistance coefficient. The landing section adopts a copper wire armor with a thermal resistance coefficient smaller than that of the steel wire, so that the current carrying capacity of the whole cable can be consistent.
该海底电缆最高可用于750V的高压环境,同时进行运行负荷监测、故障点定位等。The submarine cable can be used in a high-voltage environment of 750V, and the operation load monitoring and fault point positioning are performed at the same time.
上述超大截面高电压低损耗光纤复合海底电缆的制备方法,包括如下步骤:The method for preparing the above-mentioned ultra-high-section high-voltage low-loss optical fiber composite submarine cable comprises the following steps:
(1)制备缆芯,包括:(1) Preparing a cable core, including:
制备阻水导体:先用巨拉机拉丝并进行退火处理,得到单丝,然后将所得单丝穿入127盘绞线机并置入圆形纳米模具内,再向其中加入阻水材料,经绞 合制得紧压圆形阻水导体;所得阻水导体的规格更大大、覆盖面积更广、压紧系数更高,具体地,其最大绞合单丝截面积达30mm
2,最大截面积达3500mm
2,紧压系数达97.5%;
Preparing a water-blocking conductor: firstly drawing with a giant puller and annealing to obtain a monofilament, then inserting the obtained monofilament into a 127-disc stranding machine and placing it into a circular nano-mold, and then adding a water-blocking material thereto, The circular water blocking conductor is compacted by stranding; the obtained water blocking conductor has larger specification, wider coverage area and higher compression coefficient, specifically, the maximum stranded single wire cross-sectional area reaches 30 mm 2 , and the maximum cross-sectional area Up to 3500mm 2 , the compression coefficient is 97.5%;
三层共挤制备导体屏蔽层、绝缘层和绝缘屏蔽层:采用立式交联生产线,通过三个挤出机分别挤出导体屏蔽层、绝缘层和绝缘屏蔽层,然后再将导体屏蔽层、绝缘层和绝缘屏蔽层通过锥形机头挤出得到导体屏蔽层、绝缘层和绝缘屏蔽层的三层共挤结构,该过程保证了绝缘层的偏心度及绝缘的纯净度,具体地,所得绝缘层的最高电压达750kV,其最小偏心度不大于1.3%;Three-layer co-extrusion preparation of conductor shielding layer, insulating layer and insulating shielding layer: a vertical cross-linking production line is used, and the conductor shielding layer, the insulating layer and the insulating shielding layer are respectively extruded through three extruders, and then the conductor shielding layer, The insulating layer and the insulating shielding layer are extruded through a tapered head to obtain a three-layer co-extruded structure of the conductor shielding layer, the insulating layer and the insulating shielding layer, which ensures the eccentricity of the insulating layer and the purity of the insulation, specifically, the obtained The maximum voltage of the insulating layer is 750kV, and the minimum eccentricity is not more than 1.3%;
封闭式托盘消除应力、绕包机绕包阻水缓冲层,压铅机挤出铅套,挤出机挤出外护套,得到所述缆芯;The closed tray eliminates the stress, the wrapping machine wraps the water blocking buffer layer, the lead machine extrudes the lead sleeve, and the extruder extrudes the outer sheath to obtain the cable core;
(2)成缆:采用立式成缆及联合开装机将所述缆芯交联,使各缆芯之间形成中心孔,且成缆后任意截面上各缆芯之间两两相切式接触;(2) Cable-forming: the cable cores are cross-linked by vertical cable-forming and joint-opening machines to form a central hole between the cores, and two or two tangent-cuts between the cores on any section after cable-forming contact;
(3)在立式成缆及联合开装机内,向成缆形成的中心孔内置入光单元,并设置阻水导体,然后绕包内衬层、铠装,最后绕包外被层,得到所述海底电缆。(3) In the vertical cable-forming and joint-opening machine, a light-integrated unit is built into the center hole formed by the cable, and a water-blocking conductor is arranged, and then the inner liner is wrapped, armored, and finally wrapped around the outer layer. The submarine cable.
以上所述仅为本发明的实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformation of the present invention and the contents of the drawings may be directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.
Claims (8)
- 一种超大截面高电压低损耗光纤复合海底电缆,包括:缆芯、光单元、填充条以及依次包覆在所述缆芯、光单元和填充条外侧的包带、内衬层、铠装层和外被层;其中,所述缆芯自内向外依次由阻水导体、导体屏蔽层、绝缘层、绝缘屏蔽层、阻水缓冲层、铅套和外护套构成;其特征在于,所述缆芯有多个,且绞合形成中心孔,所述光单元放置在所述中心孔内。An ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable comprising: a cable core, a light unit, a filler strip, and a tape, an inner liner layer, and an armor layer respectively coated on the outer side of the cable core, the light unit and the filler strip And the outer layer; wherein the cable core is composed of a water blocking conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, a water blocking buffer layer, a lead sleeve and an outer sheath from the inside to the outside; wherein There are a plurality of cable cores and stranded to form a central hole in which the light unit is placed.
- 根据权利要求1所述的超大截面高电压低损耗光纤复合海底电缆,其特征在于,所述填充条为半导体材质,其与所述铅套和铠装层之间形成等电位。The ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable according to claim 1, wherein the filler strip is made of a semiconductor material and forms an equipotential with the lead sleeve and the armor layer.
- 根据权利要求1所述的超大截面高电压低损耗光纤复合海底电缆,其特征在于,所述阻水导体采用紧压圆形结构,其最大绞合单丝截面积达30mm 2,最大截面积达3500mm 2,紧压系数达97.5%。 The ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable according to claim 1, wherein the water-blocking conductor adopts a compact circular structure, and the maximum twisted monofilament cross-sectional area is up to 30 mm 2 , and the maximum cross-sectional area is up to 3500mm 2 , the compression coefficient is 97.5%.
- 根据权利要求1所述的超大截面高电压低损耗光纤复合海底电缆,其特征在于,所述绝缘层的最小偏心度不大于1.3%,其最高耐电压750kV。The ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable according to claim 1, wherein the insulating layer has a minimum eccentricity of not more than 1.3% and a maximum withstand voltage of 750 kV.
- 根据权利要求1所述的超大截面高电压低损耗光纤复合海底电缆,其特征在于,所述铠装层包括依次交替相接的钢丝铠装层和铜丝铠装层,其中,所述钢丝铠装层包覆在所述电缆的海底段,所述铜丝铠装层包覆在所述电缆的登陆段。The ultra-large cross-section high-voltage low-loss optical fiber composite submarine cable according to claim 1, wherein the armor layer comprises a steel wire armor layer and a copper wire armor layer which are alternately connected in sequence, wherein the wire 铠A layer is wrapped over the subsea section of the cable, and the copper wire armor layer is wrapped over the landing section of the cable.
- 根据权利要求1至5任一项所述的超大截面高电压低损耗光纤复合海底电缆的制备方法,其特征在于,包括如下步骤:The method for preparing an ultra-large-section high-voltage low-loss optical fiber composite submarine cable according to any one of claims 1 to 5, comprising the steps of:(1)制备缆芯:包括制备阻水导体,三层共挤制备导体屏蔽层、绝缘层和绝缘屏蔽层,消除应力再绕包阻水缓冲层,挤出铅套,挤出外护套,得到所述缆芯;(1) Preparing the cable core: comprising preparing a water-blocking conductor, three-layer co-extruding to prepare a conductor shielding layer, an insulating layer and an insulating shielding layer, eliminating the stress and then wrapping the water-blocking buffer layer, extruding the lead sleeve, and extruding the outer sheath, Obtaining the cable core;(2)成缆:将所述缆芯交联,使各缆芯之间形成中心孔,且成缆后任意截 面上各缆芯之间两两相切式接触;(2) Cable-forming: cross-linking the cable cores to form a central hole between the cores, and two-to-two contact between the cores on any cross-section after the cable is formed;(3)向成缆形成的中心孔内置入光单元,并设置阻水导体,然后绕包内衬层、铠装,最后绕包外被层,得到所述海底电缆。(3) A light-integrating unit is built into the center hole formed by the cable, and a water-blocking conductor is disposed, and then the inner liner is wrapped, the armor is wrapped, and the outer layer is finally wrapped to obtain the submarine cable.
- 根据权利要求6所述的超大截面高电压低损耗光纤复合海底电缆的制备方法,其特征在于,所述步骤(1)中,所述阻水导体的制备方法为:先用巨拉机拉丝并退火,得到单丝,然后将所述单丝穿入127盘绞线机并置入圆形纳米模具内,再向其中加入阻水材料,经绞合制得紧压圆形阻水导体。The method for preparing an ultra-large-section high-voltage low-loss optical fiber composite submarine cable according to claim 6, wherein in the step (1), the water-blocking conductor is prepared by first drawing with a giant puller and Annealing, obtaining a monofilament, then penetrating the monofilament into a 127-disc stranding machine and placing it into a circular nano-mold, and then adding a water-blocking material thereto, and twisting to obtain a compact circular water-blocking conductor.
- 根据权利要求6所述的超大截面高电压低损耗光纤复合海底电缆的制备方法,其特征在于,所述步骤(1)中,所述三层共挤制备导体屏蔽层、绝缘层和绝缘屏蔽层采用立式交联生产线,并通过锥形机头挤出得到,所得绝缘层的最高电压达750kV,其最小偏心度不大于1.3%。The method for preparing an ultra-large-section high-voltage low-loss optical fiber composite submarine cable according to claim 6, wherein in the step (1), the three layers are co-extruded to prepare a conductor shielding layer, an insulating layer and an insulating shielding layer. The vertical cross-linking production line is used and extruded through a tapered head. The highest voltage of the obtained insulating layer is 750 kV, and the minimum eccentricity is not more than 1.3%.
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CN202394580U (en) * | 2011-11-16 | 2012-08-22 | 江苏亨通高压电缆有限公司 | Split-phase lead-coated submarine cable |
CN204166971U (en) * | 2014-08-26 | 2015-02-18 | 王启先 | Optical fiber compound wind power cable |
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CN107195367A (en) * | 2017-06-05 | 2017-09-22 | 江苏亨通高压海缆有限公司 | Ultra-large-section high-voltage low-loss optical fiber composite submarine cable and preparation method thereof |
CN207116048U (en) * | 2017-06-05 | 2018-03-16 | 江苏亨通高压海缆有限公司 | Super-section high voltage low loss fiber composite submarine cable |
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