CN106057371B - HCCV ultrahigh-voltage crosslinked polyethylene insulated power cable for smart energy and manufacturing method thereof - Google Patents
HCCV ultrahigh-voltage crosslinked polyethylene insulated power cable for smart energy and manufacturing method thereof Download PDFInfo
- Publication number
- CN106057371B CN106057371B CN201610533551.3A CN201610533551A CN106057371B CN 106057371 B CN106057371 B CN 106057371B CN 201610533551 A CN201610533551 A CN 201610533551A CN 106057371 B CN106057371 B CN 106057371B
- Authority
- CN
- China
- Prior art keywords
- semi
- conductive
- conductor
- layer
- shielding layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H01B13/02—Stranding-up
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/08—Several wires or the like stranded in the form of a rope
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/20—Metal tubes, e.g. lead sheaths
- H01B7/201—Extruded metal tubes
-
- 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
- H01B7/2806—Protection against damage caused by corrosion
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a HCCV ultrahigh-voltage crosslinked polyethylene insulated power cable for intelligent energy and a manufacturing method thereof, wherein the manufacturing method comprises the following steps: firstly, manufacturing a compressed round conductor or a split conductor; secondly, producing a crosslinked insulated wire core through an HCCV catenary crosslinked three-layer co-extrusion production line; thirdly, manufacturing a semiconductive buffer water-blocking layer with a longitudinal water-blocking function; fourthly, manufacturing a light environment-friendly extruded seamless metal protective layer with radial waterproof and anticorrosion performances; and fifthly, manufacturing a waterproof and anticorrosion outer protective layer. The method has high production efficiency and low investment cost, and the ultrahigh voltage crosslinked polyethylene insulated power cable manufactured by the method has the characteristics of high voltage level, large transmission capacity, excellent electrical performance, convenience in installation and laying, low failure rate, easiness in maintenance and the like, is suitable for power stations and urban power grids, and meets the transmission requirements of power and communication.
Description
Technical Field
The invention relates to a HCCV ultrahigh-voltage crosslinked polyethylene insulated power cable for intelligent energy and a manufacturing method thereof.
Background
With the development of social economy and the continuous increase of power demand, power cables are gradually developing to higher voltage levels and larger transmission capacity, and with the improvement of the level of insulation and voltage resistance, high-voltage and ultrahigh-voltage cables are applied more and more. The novel application field of the cable is greatly expanded due to the construction of a new energy power station, the development of equipment manufacturing, the popularization of rail transit and the like.
500kV ultrahigh voltage crosslinked polyethylene insulated power cable has been developed by some cable manufacturers at home at present, the crosslinking procedure is to use a tower type ultrahigh voltage crosslinking process (VCV), although VCV is simpler and more convenient in manufacturing ultrahigh voltage crosslinked cable than an ultrahigh voltage catenary crosslinking production line (HCCV), and insulation eccentricity is easy to guarantee, the ultrahigh voltage crosslinked cable manufactured by the catenary crosslinking process can show higher technical level, the production efficiency is improved, and the investment cost is reduced.
In recent years, the automatic control technology of a production line of a catenary type crosslinking process is more perfect, the overhang control is more reliable, a machine head flow channel is more scientific in design, conductors are adopted for preheating, online accurate measurement is carried out, friction-free gravity blanking and high-tension double-rotation traction are adopted, the temperature of a crosslinking pipe is automatically controlled by computer software according to the crosslinking characteristics of polymers, the technical feasibility of manufacturing high-voltage and ultrahigh-voltage crosslinking power cables by a CCV crosslinking process is greatly improved, the history of laying and running of the high-voltage crosslinking power cables produced by the CCV process can be traced back to the front of a vertical crosslinking process, and the product quality is reliable.
Disclosure of Invention
The invention aims to provide a manufacturing method of an HCCV ultrahigh-voltage cross-linked polyethylene insulated power cable for intelligent energy, which has the characteristics of high voltage level, large transmission capacity, excellent electrical performance, convenience in installation and laying, low failure rate, easiness in maintenance and the like, is suitable for power stations and urban power grids, and meets the transmission requirements of power and communication.
The technical scheme for realizing the first purpose of the invention is a manufacturing method of an HCCV ultrahigh-voltage crosslinked polyethylene insulated power cable, which comprises the following steps:
the method comprises the following steps: determining a cable structure comprising a conductor, a semi-conductive belt, an extruded semi-conductive conductor shielding layer, an XLPE insulating layer, a semi-conductive insulating shielding layer, a semi-conductive buffer water-blocking belt, an extruded corrugated aluminum sheath, an asphalt anti-corrosion layer, an MDPE outer sheath and an extruded semi-conductive PE outer electrode from inside to outside in sequence;
step two: according to GB/T22078-; calculating the sectional area S;
step three: a layer of semi-conductive nylon belt and a layer of semi-conductive Teflon belt are wrapped outside the conductor to be used as semi-conductive belts, and the covering rate is 25% -35%;
step four: extruding a semi-conductive conductor shielding layer, an XLPE insulating layer and a semi-conductive insulating shielding layer outside a semi-conductive belt by adopting an HCCV three-layer co-extrusion process;
step five: two layers of semi-conductive buffer water-blocking tapes are wrapped outside the semi-conductive insulating shielding layer to serve as the semi-conductive buffer water-blocking tapes, and the covering rate is 45% -50%;
step six: adopting a continuous extrusion corrugated aluminum sheath process to extrude the corrugated aluminum sheath outside the semi-conductive buffer water-blocking tape;
step seven: a double-layer co-extrusion production line is adopted, an asphalt anti-corrosion layer is coated outside the corrugated aluminum sheath, and the MDPE outer sheath and the semi-conductive PE outer electrode are extruded simultaneously.
In the second step, the conductor is a strand of folded yarn or a plurality of strands of folded yarn, and each strand of folded yarn is twisted by a plurality of monofilaments; when the conductor is a plurality of strands, drawing a conductor segmentation sectional drawing by adopting AutoCAD, and designing a strand pressing wheel.
In the second step, the single wire in the conductor is drawn by a double-head continuous annealing copper large drawing machine, the tolerance of the wire diameter is controlled to be +/-0.01 mm, and the elongation at break is more than or equal to 30 percent; the monofilaments were twisted into strands using a 91-disc frame twister.
In the second step, when the conductor is a multi-strand conductor, the conductor is divided into a central strand and a peripheral strand, the outer diameter control tolerance is +/-0.5 mm when the peripheral strand and the central strand are cabled, the cabling pitch is the same as the pre-twisting pitch of the strands, and a layer of semiconductive nylon belt and a layer of semiconductive extra-polypropylene belt in the third step are synchronously lapped during cabling.
In the HCCV three-layer co-extrusion process in the fourth step, the extrusion temperature is designed according to the extrusion performance of the materials of the semiconductive conductor shielding layer, the XLPE insulating layer and the semiconductive insulation shielding layer, a conductor preheating device is used, an online deviation measuring instrument is adopted to detect the eccentricity condition of the cable, the nitrogen pressure is sufficient, the number of the up-and-down traction rotation meters and the compensation coefficient are adjusted according to different specifications, and the preset eccentricity is slightly larger than the left-and-right.
And the thicknesses of the extruded semi-conductor shielding layer, the ultra-clean XLPE insulating layer and the ultra-smooth semi-conductor insulating shielding layer in the fourth step are respectively 2.2mm, 31.0mm and 1.5 mm.
And taking up the wire cores after the step four by using a degassing disc, then placing the wire cores into a drying room for degassing, wherein the degassing days are 20-21 days, the degassing temperature is 65-75 ℃, the degassing time is up, the heat source is closed, and the wire cores are parked for 24 hours.
The embossing depth of the continuous extruded and corrugated aluminum sheath in the sixth step ensures a gap; in the seventh step, the thickness of the MDPE outer sheath is 6.0mm, and the thickness of the semiconductive PE outer electrode is 0.4 mm.
The second purpose of the invention is to provide an HCCV ultrahigh-voltage crosslinked polyethylene insulated power cable.
The technical scheme for realizing the second purpose of the invention is that the HCCV ultrahigh voltage crosslinked polyethylene insulated power cable sequentially comprises a conductor, a semi-conductive belt, a semi-conductive conductor shielding layer, an XLPE insulating layer, a semi-conductive insulating shielding layer, a semi-conductive buffering water-blocking belt, a corrugated aluminum sheath, an asphalt anti-corrosion layer, an MDPE outer sheath and a semi-conductive PE outer electrode from inside to outside; the semi-conductive belts are a layer of semi-conductive nylon belt and a layer of semi-conductive Teflon belt, and the covering rate is 25% -35%; the semi-conductive buffer water-blocking tape is wrapped by two layers of semi-conductive buffer water-blocking tapes with the covering rate of 45% -50%; the conductor is a strand or a plurality of strands, each strand is twisted by a plurality of monofilaments, and when the conductor is a plurality of strands, the conductor is divided into a central strand and a peripheral strand.
The thicknesses of the semi-conductive conductor shielding layer, the ultra-clean XLPE insulating layer, the ultra-smooth semi-conductive insulating shielding layer, the MDPE outer sheath and the semi-conductive PE outer electrode are respectively 2.2mm, 31.0mm, 1.5mm, 6.0mm and 0.4 mm.
By adopting the technical scheme, the invention has the following beneficial effects: (1) the method has high production efficiency and low investment cost, and the ultrahigh voltage crosslinked polyethylene insulated power cable manufactured by the method has the characteristics of high voltage level, large transmission capacity, excellent electrical performance, convenience in installation and laying, low failure rate, easiness in maintenance and the like, is suitable for power stations and urban power grids, and meets the transmission requirements of power and communication.
(2) According to the HCCV cross-linking three-layer co-extrusion process, the conductor preheating temperature is controlled, the thermal stress of the cross-linked cable insulation is improved, and the temperature of a cross-linked pipe is reduced, so that the temperature of the cable in a cross-linking heating section is reduced, high-temperature cross-linking is avoided, the temperature difference between the inside and the outside of the cable insulation is reduced, and the insulation is prevented from being excessively shrunk to the conductor and excessively expanded to the outside. The traction rotation speed is tracked and adjusted according to the specification of the cable, the insulation thickness and the production speed, and the preset size range of the pre-adjusted eccentricity can further ensure that the insulation eccentricity of the cable produced by the invention meets the standard of less than or equal to 5 percent, even higher than the standard requirement. The catenary type cross-linking production line can be installed and used in a common factory building, so that the cross-linking heating section pipeline is 3-4 sections longer than a vertical tower type pipeline, the step-by-step cooling effect is better, and the roundness of a cross-linked wire core is better.
(3) The invention is innovatively combined with the national standard, and the diameter, the whole sectional area and the direct current resistance of the conductor monofilament completely meet the GB/T22078-.
(4) The extruded corrugated aluminum sheath is used as a radial waterproof layer of a cable, has better waterproof performance than a welded corrugated aluminum sheath, and can prevent water branches generated after XLPE insulation contacts water; the protective layer plays a role in protecting the insulated wire core and avoids damage to the insulated wire core caused by external force; the metal shielding layer can bear zero sequence short circuit current and has good thermal stability.
Drawings
In order that the disclosure of the present invention may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments taken in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic view of the structure of the cable of the present invention, in which the conductor is a single-strand wire.
Fig. 2 is a schematic view of the cable structure of the present invention, wherein the conductor is a plurality of strands.
The reference numbers in the drawings are as follows:
the cable comprises a conductor 1, a semi-conductive belt 2, an extruded semi-conductive conductor shielding layer 3, an XLPE insulating layer 4, a semi-conductive insulating shielding layer 5, a semi-conductive buffering water-blocking tape 6, a corrugated aluminum sheath 7, an asphalt anti-corrosion layer 8, an MDPE outer sheath 9 and a semi-conductive PE outer electrode 10.
Detailed Description
(example 1)
Referring to fig. 1 and fig. 2, the HCCV ultrahigh voltage crosslinked polyethylene insulated power cable for smart energy of the present embodiment sequentially comprises, from inside to outside, a conductor 1, a semi-conductive tape 2, a semi-conductive conductor shielding layer 3, an XLPE insulating layer 4, a semi-conductive insulating shielding layer 5, a semi-conductive buffer water-blocking tape 6, a corrugated aluminum sheath 7, an asphalt anti-corrosion layer 8, an MDPE outer sheath 9, and a semi-conductive PE outer electrode 10; the semi-conductive belt 2 is a layer of semi-conductive nylon belt and a layer of semi-conductive Teflon belt, and the covering rate is 25-35%; the semi-conductive buffer water-blocking tape 6 is wrapped by two layers of semi-conductive buffer water-blocking tapes with the covering rate of 45% -50%; the thicknesses of the semiconductive conductor shielding layer 3, the ultra-clean XLPE insulating layer 4, the ultra-smooth semiconductive insulating shielding layer 5, the MDPE outer sheath 9 and the semiconductive PE outer electrode 10 are respectively 2.2mm, 31.0mm, 1.5mm, 6.0mm and 0.4 mm. As shown in fig. 1, the conductor 1 is a strand of wire. As shown in fig. 2, the conductor 1 is a plurality of strands, each strand being stranded by a plurality of monofilaments, divided into a central strand and a peripheral strand.
A method of manufacture comprising the steps of:
the method comprises the following steps: determining the cable structure sequentially comprising a conductor 1, a semi-conductive belt 2, an extruded semi-conductive conductor shielding layer 3, an XLPE insulating layer 4, a semi-conductive insulating shielding layer 5, a semi-conductive buffer water-blocking belt 6, an extruded corrugated aluminum sheath 7, an asphalt anti-corrosion layer 8, an MDPE outer sheath 9 and an extruded semi-conductive PE outer electrode 10 from inside to outside;
step two: according to GB/T22078-; calculating the sectional area S; the conductor 1 is a strand of folded yarn or a plurality of strands of folded yarn, and each strand of folded yarn is twisted by a plurality of monofilaments; the single wire in the conductor 1 is drawn by a double-head continuous annealing copper large drawing machine, the tolerance of the wire diameter is controlled to be +/-0.01 mm, and the elongation at break is more than or equal to 30 percent; the monofilaments were twisted into strands using a 91-disc frame twister. When the conductor 1 is a multi-strand conductor, drawing a conductor segmentation sectional drawing by adopting AutoCAD, designing a strand pinch roller, segmenting the conductor into a central strand and a peripheral strand, controlling the tolerance of the outer diameter of the peripheral strand and the central strand to be +/-0.5 mm when the peripheral strand and the central strand are cabled, enabling the cabling pitch to be the same as the pre-twisting pitch of the strands, and synchronously lapping a layer of semiconductive nylon belt and a layer of semiconductive super-nylon belt in the three steps when the cable is cabled. The cross section area is 800mm2The following conductors should adopt a 2 nd compacted twisted round structure conforming to GB/T3956, and the sectional area is 800mm2The conductors adopt a split conductor structure; 800mm2The conductor of (2) can adopt a pressing and twisting round structure, and can also adopt a split conductor structure.
Step three: a layer of semi-conductive nylon tape and a layer of semi-conductive Teflon tape are wrapped outside the conductor 1 to be used as the semi-conductive tape 2, and the covering rate is 25% -35%;
step four: a HCCV three-layer co-extrusion process is adopted to extrude a semi-conductive conductor shielding layer 3, an XLPE insulating layer 4 and a semi-conductive insulating shielding layer 5 outside a semi-conductive belt 2; designing an extrusion temperature according to the extrusion performance of the materials of the semiconductive conductor shielding layer 3, the XLPE insulating layer 4 and the semiconductive insulating shielding layer 5, wherein the extrusion temperature range is 65-75 ℃, and the semiconductive insulating shielding layer 5 is adopted; according to the extrusion melting temperature of the semiconductive conductor shielding layer 3, the extrusion melting temperature of the insulating layer 120 ℃ and the preheating temperature of the conductor 80 +/-3 ℃. The online deviation measuring instrument is adopted to detect the eccentric condition of the cable, the nitrogen pressure is sufficient, the number of the up-and-down traction rotation meters and the compensation coefficient are adjusted according to different specifications, and the preset eccentricity is slightly larger than the up-and-down eccentricity to the left-and-right eccentricity. The thicknesses of the extruded semiconductive conductor shielding layer 3, the ultra-clean XLPE insulating layer 4 and the ultra-smooth semiconductive insulating shielding layer 5 are respectively 2.2mm, 31.0mm and 1.5 mm. And after the extrusion, taking up the wires by using a degassing disc, placing the wires into a drying room for degassing for 20-21 days at a degassing temperature of 65-75 ℃ for 24 hours, turning off a heat source, and standing the wires for 24 hours. The up-down traction rotation secretary and the compensation coefficient are carried out according to the following steps:
| specifications (mm)2) | 400 | 500 | 630 | 800 | 1000 | 1200 | 1600 | 1800 | 2000 | 2500 |
| Length of rotation (m) | 10 | 10 | 10 | 11 | 12 | 12 | 13 | 14 | 14 | 16 |
| Compensation factor (%) | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 |
Step five: two layers of semi-conductive buffer water-blocking tapes are wrapped outside the semi-conductive insulating shielding layer 5 to serve as the semi-conductive buffer water-blocking tapes 6, and the covering rate is 45% -50%;
step six: adopting a continuous extrusion corrugated aluminum sheath process to extrude a corrugated aluminum sheath 7 outside the semi-conductive buffer water-blocking tape 6; the corrugated aluminum sheath is continuously extruded with the embossing depth to ensure a gap; in the seventh step, the thickness of the MDPE outer sheath 9 is 6.0mm, and the thickness of the semi-conductive PE outer electrode 10 is 0.4 mm.
Step seven: a double-layer co-extrusion production line is adopted, the asphalt anti-corrosion layer 8 is coated outside the corrugated aluminum sheath 7, and the MDPE outer sheath 9 and the semi-conductive PE outer electrode 10 are extruded simultaneously.
In order to verify the electrical and mechanical properties of the HCCV ultrahigh-voltage crosslinked polyethylene insulated power cable manufactured by the method, a complete cable is manufactured by the method according to the embodiment, various tests are carried out according to national standards, and the test results all meet the standard requirements.
The above embodiments are further described in detail to illustrate the objects, technical solutions and advantages of the present invention, and it should be understood that the above method for manufacturing HCCV ultra-high voltage crosslinked polyethylene insulated power cable for smart energy is only representative of the embodiments of the present invention, and is not intended to limit the present invention, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (7)
1. The manufacturing method of the HCCV ultrahigh-voltage crosslinked polyethylene insulated power cable for the intelligent energy is characterized by comprising the following steps of:
the method comprises the following steps: determining a cable structure comprising a conductor (1), a semi-conductive belt (2), an extruded semi-conductive conductor shielding layer (3), an XLPE insulating layer (4), a semi-conductive insulating shielding layer (5), a semi-conductive buffer water-blocking belt (6), an extruded corrugated aluminum sheath (7), an asphalt anti-corrosion layer (8), an MDPE outer sheath (9) and an extruded semi-conductive PE outer electrode (10) from inside to outside in sequence;
step two: according to GB/T22078-; calculating the sectional area S; the conductor (1) is a five-division peripheral strand and a central strand positioned in the center, each strand is twisted by a plurality of monofilaments, an AutoCAD (auto computer aided design) is adopted to draw a conductor division sectional view, and a strand pinch roller is designed;
step three: a layer of semi-conductive nylon tape and a layer of semi-conductive Teflon tape are wrapped outside the conductor (1) to be used as the semi-conductive tape (2), and the overlapping rate is 25% -35%;
step four: a HCCV three-layer co-extrusion process is adopted to extrude a semi-conductive conductor shielding layer (3), an XLPE insulating layer (4) and a semi-conductive insulating shielding layer (5) outside a semi-conductive belt (2); taking up the wires by using a degassing disc, placing the wires into a drying room for degassing, wherein the degassing days are 20-21 days, the degassing temperature is 65-75 ℃, the degassing time is up, closing a heat source, and standing for 24 hours;
step five: two layers of semi-conductive buffer water-blocking tapes are wrapped outside the semi-conductive insulating shielding layer (5) to serve as the semi-conductive buffer water-blocking tapes (6), and the covering rate is 45% -50%;
step six: adopting a continuous extrusion corrugated aluminum sheath process to extrude a corrugated aluminum sheath (7) outside the semi-conductive buffer water-blocking tape (6);
step seven: a double-layer co-extrusion production line is adopted, an asphalt anti-corrosion layer (8) is coated outside the corrugated aluminum sheath (7), and the MDPE outer sheath (9) and the semi-conductive PE outer electrode (10) are extruded simultaneously;
in the HCCV three-layer co-extrusion process in the fourth step, the extrusion temperature is designed according to the extrusion performance of the materials of the semiconductive conductor shielding layer (3), the XLPE insulating layer (4) and the semiconductive insulating shielding layer (5), a conductor preheating device is used, an online deviation measuring instrument is adopted to detect the eccentricity condition of the cable, the nitrogen pressure is sufficient, the number of the up-and-down traction rotation meters and the compensation coefficient are adjusted according to different specifications, and the preset eccentricity is slightly larger than the left-and-right in the up-and-down direction;
the thicknesses of the extruded semi-conductor shielding layer (3), the ultra-clean XLPE insulating layer (4) and the ultra-smooth semi-conductor insulating shielding layer (5) in the fourth step are respectively 2.2mm, 31.0mm and 1.5 mm;
the number of meters of the up-down traction rotation and the compensation coefficient are carried out according to the following steps:
the cross section area is 400mm2/500mm2/630mm2The rotation length of the conductor is 10 meters, and the compensation coefficient is 90 percent; the cross section area is 800mm2The rotation length of the conductor is 11 meters, and the compensation coefficient is 90 percent; the cross section area is 1000mm2/1200mm2The rotating length of the conductor is 12 meters, and the compensation coefficient is 90 percent; the cross section area is 1600mm2The rotation length of the conductor is 13 meters, and the compensation coefficient is 90 percent; the cross section area is 1800mm2/2000mm2The rotation length of the conductor is 14 meters, and the compensation coefficient is 90 percent; the cross section area is 2500mm2The conductor of (2) has a rotation length of 16 meters and a compensation factor of 90%.
2. The method for manufacturing an HCCV ultra-high voltage crosslinked polyethylene insulated power cable for smart energy according to claim 1, wherein: in the second step, the single wire in the conductor (1) is drawn by a double-head continuous annealing copper large drawing machine, the wire diameter control tolerance is +/-0.01 mm, and the elongation at break is more than or equal to 30 percent; the monofilaments were twisted into strands using a 91-disc frame twister.
3. The method for manufacturing an HCCV ultra-high voltage crosslinked polyethylene insulated power cable for smart energy according to claim 2, wherein: in the second step, the tolerance of the outer diameter is controlled to be +/-0.5 mm when the peripheral compound yarn and the central compound yarn are cabled, the cabling pitch is the same as the pre-twisting pitch of the compound yarn, and a layer of semi-conductive nylon belt and a layer of semi-conductive extra-nylon belt in the third step are synchronously lapped in the cabling process.
4. The method for manufacturing an HCCV ultra-high voltage crosslinked polyethylene insulated power cable for smart energy according to claim 3, wherein: and the thickness of the extruded semi-conductor shielding layer (3), the ultra-clean XLPE insulating layer (4) and the ultra-smooth semi-conductor insulating shielding layer (5) in the fourth step is respectively 2.2mm, 31.0mm and 1.5 mm.
5. The method for manufacturing the HCCV ultrahigh-voltage crosslinked polyethylene insulated power cable for smart energy according to claim 4, wherein: the embossing depth of the continuous extruded and corrugated aluminum sheath in the sixth step ensures a gap; in the seventh step, the thickness of the MDPE outer sheath (9) is 6.0mm, and the thickness of the semiconductive PE outer electrode (10) is 0.4 mm.
6. Wisdom is HCCV superhigh pressure crosslinked polyethylene insulation power cable for energy, its characterized in that: the cable is characterized in that a conductor (1), a semi-conductive belt (2), a semi-conductive conductor shielding layer (3), an XLPE insulating layer (4), a semi-conductive insulating shielding layer (5), a semi-conductive buffer water-blocking belt (6), a corrugated aluminum sheath (7), an asphalt anti-corrosion layer (8), an MDPE outer sheath (9) and a semi-conductive PE outer electrode (10) are arranged from inside to outside in sequence; the semi-conductive belt (2) is a layer of semi-conductive nylon belt and a layer of semi-conductive Teflon belt, and the covering rate is 25-35%; the semi-conductive buffer water-blocking tape (6) is wrapped by two layers of semi-conductive buffer water-blocking tapes with the covering rate of 45% -50%; the conductor (1) is a five-division peripheral strand and a central strand positioned in the center, and each strand is stranded by a plurality of monofilaments.
7. The HCCV ultrahigh-voltage crosslinked polyethylene insulated power cable for smart energy according to claim 6, wherein: the thicknesses of the semi-conductor shielding layer (3), the ultra-clean XLPE insulating layer (4), the ultra-smooth semi-conductive insulating shielding layer (5), the MDPE outer sheath (9) and the semi-conductive PE outer electrode (10) are respectively 2.2mm, 31.0mm, 1.5mm, 6.0mm and 0.4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533551.3A CN106057371B (en) | 2016-07-07 | 2016-07-07 | HCCV ultrahigh-voltage crosslinked polyethylene insulated power cable for smart energy and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533551.3A CN106057371B (en) | 2016-07-07 | 2016-07-07 | HCCV ultrahigh-voltage crosslinked polyethylene insulated power cable for smart energy and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106057371A CN106057371A (en) | 2016-10-26 |
| CN106057371B true CN106057371B (en) | 2020-08-28 |
Family
ID=57185627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610533551.3A Active CN106057371B (en) | 2016-07-07 | 2016-07-07 | HCCV ultrahigh-voltage crosslinked polyethylene insulated power cable for smart energy and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106057371B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108091433B (en) * | 2017-12-12 | 2021-05-25 | 杭州电缆股份有限公司 | Processing method of high-voltage corrugated metal sleeve low-eccentricity polyethylene outer sheath power cable |
| CN108091442A (en) * | 2017-12-12 | 2018-05-29 | 杭州电缆股份有限公司 | A kind of high roundness crosslinking core medium-pressure power cable and its manufacturing method |
| CN109473225A (en) * | 2018-12-17 | 2019-03-15 | 山东科虹线缆科技有限公司 | Termite-proof extra-high-tension cable of the crosslinked polyetylene insulated protection against rodents of 220kV and preparation method thereof |
| CN109727714A (en) * | 2018-12-17 | 2019-05-07 | 山东科虹线缆科技有限公司 | Crosslinked polyetylene insulated corrugated aluminium sheath armored high-voltage cable and preparation method thereof |
| CN109920591A (en) * | 2019-04-18 | 2019-06-21 | 安徽顺信线缆有限公司 | A kind of fire resistant flexible elevator trailing data cable |
| CN111613390A (en) * | 2020-05-14 | 2020-09-01 | 江苏亨通高压海缆有限公司 | Production method of alternating current-direct current hybrid submarine cable for offshore wind power |
| CN111961239A (en) * | 2020-07-23 | 2020-11-20 | 上海摩恩电气股份有限公司 | Method for enhancing insulation stability of crosslinked polyethylene insulated power cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101499336A (en) * | 2008-01-29 | 2009-08-05 | 上海红旗电缆（集团）有限公司 | Production method of three-intermediate color cable with outer conductor |
| CN104575837A (en) * | 2014-12-12 | 2015-04-29 | 浙江晨光电缆股份有限公司 | High-voltage power cable extruded with flat aluminum sheath and manufacturing method |
| CN205069157U (en) * | 2015-10-12 | 2016-03-02 | 江苏宝安电缆有限公司 | Big high current -carrying capacity high tension cable in cross -section |
| CN205069203U (en) * | 2015-10-23 | 2016-03-02 | 无锡市长城电线电缆有限公司 | Insulating optic fibre temperature measurement power cable of 500kV crosslinked polyethylene |
| CN205789312U (en) * | 2016-07-07 | 2016-12-07 | 远东电缆有限公司 | Wisdom energy HCCV ultra-high voltage cross-linking polyethylene-insulated power cable |
-
2016
- 2016-07-07 CN CN201610533551.3A patent/CN106057371B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101499336A (en) * | 2008-01-29 | 2009-08-05 | 上海红旗电缆（集团）有限公司 | Production method of three-intermediate color cable with outer conductor |
| CN104575837A (en) * | 2014-12-12 | 2015-04-29 | 浙江晨光电缆股份有限公司 | High-voltage power cable extruded with flat aluminum sheath and manufacturing method |
| CN205069157U (en) * | 2015-10-12 | 2016-03-02 | 江苏宝安电缆有限公司 | Big high current -carrying capacity high tension cable in cross -section |
| CN205069203U (en) * | 2015-10-23 | 2016-03-02 | 无锡市长城电线电缆有限公司 | Insulating optic fibre temperature measurement power cable of 500kV crosslinked polyethylene |
| CN205789312U (en) * | 2016-07-07 | 2016-12-07 | 远东电缆有限公司 | Wisdom energy HCCV ultra-high voltage cross-linking polyethylene-insulated power cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106057371A (en) | 2016-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106057371B (en) | HCCV ultrahigh-voltage crosslinked polyethylene insulated power cable for smart energy and manufacturing method thereof | |
| CN201877158U (en) | High-conductivity and ultrahigh-strength 10kV overhead insulated cable | |
| CN102347109A (en) | Manufacture method for low-voltage electric power cable used for nuclear power station | |
| CN104575837A (en) | High-voltage power cable extruded with flat aluminum sheath and manufacturing method | |
| CN105321616A (en) | Novel crosslinked polyethylene insulated water-blocking power cable | |
| CN115938674A (en) | Polypropylene insulation power cable and production process thereof | |
| CN105575460A (en) | Insulating aerial aluminum alloy cable and preparation method thereof | |
| CN101499336A (en) | Production method of three-intermediate color cable with outer conductor | |
| CN1246861C (en) | 500kV ultra-high voltage cross-linking cable and its production process | |
| CN110570992B (en) | Production process of magnetic suspension track traffic long stator cable | |
| CN205789312U (en) | Wisdom energy HCCV ultra-high voltage cross-linking polyethylene-insulated power cable | |
| CN111029027A (en) | Intelligent self-checking environment-friendly medium-voltage cable and manufacturing method thereof | |
| CN104575824A (en) | Fission isolation capacity-increasing high voltage power cable with high bonding insulation and manufacturing method | |
| CN101707817A (en) | Heat tracing cable with organic insulated metal sheath and manufacturing method thereof | |
| CN111009355B (en) | Control method for eccentricity of split conductor of crosslinked wire core of ultrahigh-voltage cable | |
| CN218918463U (en) | High-softness special-shaped conductor | |
| CN103714902A (en) | Special-structure environment-friendly power cable for transformer connection | |
| CN103366897B (en) | The vertical tower of the vertical L-type chemical crosslinking of VCV cable production technology and carrying | |
| CN115497688A (en) | Preparation method of 26/35kV and below environment-friendly polypropylene insulated power cable | |
| CN209747228U (en) | Environment-friendly 500kV ultrahigh voltage cable | |
| CN108091433B (en) | Processing method of high-voltage corrugated metal sleeve low-eccentricity polyethylene outer sheath power cable | |
| CN113284673A (en) | Preparation device and preparation method of large-length jointless ultrahigh-voltage submarine cable | |
| CN114283991A (en) | Smooth aluminum sheath high-voltage power cable and production process thereof | |
| CN203607155U (en) | Manufacturing device of watertight type overhead protection cable | |
| CN205542085U (en) | Zinc -aluminum alloy plating takes second propylene and resistance to compression control cable of armor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230331 Address after: 1009, Yangkou Port Business Building, No.1 Bohai Road, Yangkou Port Economic Development Zone, Rudong County, Nantong City, Jiangsu Province, 226300 Patentee after: Far East Submarine Cable Co.,Ltd. Address before: 214257 8 Yuandong Road, Gaosheng Town, Yixing City, Wuxi, Jiangsu Patentee before: FAR EAST CABLE Co.,Ltd. Patentee before: NEW FAR EAST CABLE Co.,Ltd. |
|
| TR01 | Transfer of patent right |