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WO2014200388A2 - Câble pour ligne électrique aérienne et procédé de fabrication - Google Patents

Câble pour ligne électrique aérienne et procédé de fabrication Download PDF

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Publication number
WO2014200388A2
WO2014200388A2 PCT/RU2014/000413 RU2014000413W WO2014200388A2 WO 2014200388 A2 WO2014200388 A2 WO 2014200388A2 RU 2014000413 W RU2014000413 W RU 2014000413W WO 2014200388 A2 WO2014200388 A2 WO 2014200388A2
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WO
WIPO (PCT)
Prior art keywords
wire
wires
aluminum
core
fibers
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Ceased
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PCT/RU2014/000413
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English (en)
Russian (ru)
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WO2014200388A3 (fr
Inventor
Дмитрий Григорьевич СИЛЬЧЕНКОВ
Сергей Владимирович ГРИШИН
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Individual
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Individual
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Publication of WO2014200388A2 publication Critical patent/WO2014200388A2/fr
Publication of WO2014200388A3 publication Critical patent/WO2014200388A3/fr
Anticipated expiration legal-status Critical
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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Definitions

  • the invention relates to the electric power industry, namely, to the design of wires of overhead power lines and electrical networks.
  • overhead lines When choosing a wire for the construction of new overhead lines or reconstruction of existing power lines, the leading network companies strive to: increase the throughput of overhead lines (hereinafter referred to as overhead lines), reduce the load on supports, and reduce the icy-wind effect on the wire.
  • Continuously reinforced composite materials are widely used at present to solve a wide range of practical problems.
  • the advantages of these materials include: the development of the raw material base and the technology of processing materials into products, the ability to predict in advance with high accuracy the operational characteristics of the finished product from the known characteristics of their components (binder and filler).
  • Specific indicators reinforced with high-strength fibers (indicators per unit weight) of composite materials are significant significantly exceed the characteristics of metals and alloys.
  • the use of continuously reinforced composite materials in the manufacture of the supporting core of overhead power lines allows network specialists to solve the problem of uninterrupted supply of electricity to consumers, choosing for themselves in each specific case which of the following wire indicators are priority:
  • ZM ACCR wire is known (application US N ° 20100038112) in which the core is made of a metal composite with an external conductive core of high-temperature aluminum-zirconium wires.
  • the ACCR wire design provides that both the composite core and the outer coil of aluminum-zirconium wires contribute to the strength and conductivity of the wire.
  • the composite core of the ACCR wire consists of fibers of high purity aluminum ceramics (aluminum oxide A1 20 0) in a matrix of high purity aluminum. Each core consists of more than 25,000 heavy-duty fibers A1 2 0 3 . Ceramic fibers are continuous, with an axial orientation of 0 °, and completely placed in an aluminum matrix.
  • the outer aluminum-zirconium coil is a heat-resistant alloy that allows continuous operation at 210 ° C, with peak loads up to 240 ° C.
  • the ACCC aluminum wire from STS has a supporting core, which is an epoxy matrix reinforced with carbon and glass fibers.
  • the manufacturing technology of such an occasion provides that during the process In pultrusion, an unbroken unidirectional carbon fiber forms a solid cylindrical core, while a layer of E-glass fibers of the same orientation is laid around the outer sheath. Carbon and glass fibers are impregnated with a high temperature epoxy resin.
  • ACCC Lightweight Conductive Cable from Composite Technology Corp. contains, obtained by pultrusion, an integral structural core of an epoxy matrix reinforced with carbon and glass fibers, coated with a conductive annealed aluminum wire. To obtain a solid core in the form of a rod, a wet bundle of fibers is passed through a steel spinneret and cured at 260 ° C.
  • a protective outer coating is applied and cured on the production line.
  • the bar is cut to the length required by the customer.
  • the cores have diameters from 12.7 mm to 69.85 mm, which gives a current density of 300 A to 3500 A per line.
  • the ACCC conductor system can operate continuously at 180 ° ⁇ and can sustain short-term jumps up to 200 ° ⁇ , with only 10% sagging from the sagging value of a wire with a steel core.
  • the aluminum coil of ACCC wire is made of twisted conductive wires made of heat-resistant aluminum-zirconium alloy or annealed alloy 1350, similar in composition to domestic alloys A5E, A7E.
  • the structural and technological feature of the ACCC wire core from STS is that two or more high-strength, continuously reinforcing fiber core are used in its composition: glass and carbon fiber, while the core is formed by pultrusion. This circumstance noticeably complicates the production technology of such a core and wires based on it.
  • Known wire consisting of wires containing a reinforcing core coated with a layer of metallic conductive material of high conductivity, while the core is made of composite material with a synthetic resin matrix modified with carbon nanoclusters of a fulleroid type, the concentration of which is 0.001-2 , 0 wt.%.
  • metallic conductive material of high conductivity copper and / or aluminum or steel or their alloys with other substances can be used.
  • synthetic resin a thermosetting resin, for example, epoxy, or heat-resistant thermoplastic resin with a melting point above 150 ° C is used. Fullerenes and / or nanotubes and / or astralen are used as carbon nanoclusters.
  • RF patent N ° 100846, NOSH 5/08 Known options for high-temperature wires for power lines.
  • the wire design described in RF patent K "100846 includes a conductive core made in the form of round or shaped wires of heat-resistant aluminum-zirconium alloy or annealed aluminum grade A5E, ⁇ 7 ⁇ and a supporting composite core made in the form of a long rod or twisted continuously fiber reinforced with the same composition composite long rods containing a reinforcing spiral frame on the surface.
  • a significant difference between the wires described in RF patent N 100846 is a method for the non-spherical molding of a bearing composite core, which consists in single-thread or multi-thread or single-row or multi-row or cross-counter spiral winding of heat-resistant thread with a gap or butt, or with overlapping wetted in a binder fiber bundle, due to which a reinforcing spiral frame is formed on the surface of the core rods, which gives the finished product increased resistance to vibration and alternating Loading the.
  • Wires for power lines made on the basis of a patented supporting composite core have a single or multi-core core.
  • the core is a long rod or twisted long rods made of high-strength heat-resistant continuously reinforced composite material having a tensile strength of at least 1 GPa, consisting of a high-strength reinforcing fiber of the same composition with a degree of filling on May 30-85. % and thermoset heat-resistant polymer binder content of May 15-70. %
  • the profile of the bearing core in the form of a long rod is formed by the pultrusion method. It is possible to apply an external protective coating to the core in the form of a protective paint-and-lacquer shell.
  • the core core profile is also formed directly in the protective outer metal shell.
  • the bundle of the reinforcing fiber impregnated with a thermoset heat-resistant binder is placed on a moving aluminum tape, which is rolled together with the impregnated fiber into a cylinder in a forming device.
  • composition and design of the composite core in RF patent Na 2386183, including the protective coatings used, are designed for long-term operation of the overhead line at elevated temperatures (150 - 300 ° C).
  • elevated temperatures 150 - 300 ° C.
  • STS, ZM high-temperature wires by foreign companies
  • STS, ZM foreign companies
  • the present invention solves the problem:
  • the present invention provides for the possibility of solving the technical problem, in various versions of the structural implementation of the developed wire for overhead power lines.
  • wire overhead power lines which combines increased mechanical strength, low coefficient of thermal expansion, reduced weight, reliability, high resistance to the influence of active environmental factors under operating conditions, has been realized;
  • a high service life of the wire is achieved by ensuring a uniform distribution of loads between the current-transmitting and load-bearing elements of the wire during heating-cooling under operating conditions in the temperature range from -50 ° C to 300 ° C;
  • the invention allows to increase the throughput capacity of overhead lines, while ensuring minimal sagging of the wire, reduce the load on the power transmission line poles, increase the overhaul period, increase resistance to wind loads and icy-frosty formations, organize a communication line due to the fiber-optic module and information transfer.
  • the technical result of the present invention is also that for the manufacture of the wire, a simple and high-performance technology for the production of the wire is maximally protected from environmental influences.
  • the technical result in terms of the device is achieved by the fact that, in the wire for overhead power lines containing a multi-wire conductive core consisting of wires, according to the invention, at least three wires of a multi-wire conductive core are provided with a supporting element located inside each of these wires, made in as a long rod of continuously reinforced composite material with a thermosetting polymer or metal matrix.
  • the multi-wire conductive core of the wire is made of twisted wires; conductive wire wires are made of either copper, or aluminum, or copper alloys, or aluminum alloys; wires of a multi-wire conductive core wires have either round, or trapezoidal and round, or ⁇ -shaped and round cross-sectional shape; a multi-wire conductive core is made in the form of wires, with or without a gap, twisted around a strand of twisted or non-twisted wires containing a supporting element; the bearing element of a wire of a multi-wire conductive core has a tensile strength of at least 500 MPa, an elastic modulus of at least 40 GPa, a coefficient of thermal expansion of less than 1.1x10 5 1 / ° ⁇ ;
  • the supporting element with a thermosetting polymer matrix consists of a reinforcing fiber of the same composition with a content of May 30-95.
  • the technical result in terms of the method is achieved by the fact that, in the method of manufacturing the wire of overhead power lines, including winding continuous reinforcing fibers from coils, impregnating the fibers with a polymer binder, curing the binder, winding the manufactured wire wire onto the coils of a twisting machine, twisting wires in a wire on twisting machines and winding the finished wire onto a take-up drum according to the invention after winding reinforcing fibers (long-length rod of continuously reinforced composite material) from coils, the obtained bundle (rod) is pulled into a metal pipe, the bundle of reinforcing fibers is impregnated (the long rod of continuously reinforced composite material is wetted or not wetted) with a polymer binder directly in the metal pipe, by filling it with a polymer binder, form the wire profile of the wire, while the formation of the wire profile occurs when a metal pipe is drawn with a bundle of reinforcing fibers inside (a long rod made of continuous reinforced composite material), impregnated
  • metal pipes made of either copper or aluminum or copper alloys or aluminum alloys are used; using reinforcing fibers of a long composite rod having a tensile strength of at least 0.7 GPa and an elastic modulus of at least 50 GPa; using thermosetting binders of a long composite rod having a glass transition temperature above 100 ° C; a long composite rod consisting of pre-metallized carbon fiber with a content of May 45-92 is used. % and a metal matrix made of aluminum or aluminum alloys, the content of May 8-55.
  • thermosetting polymer binder inside the wires of the wire is carried out either in a thermal furnace or with high frequency currents; a lengthy composite rod with a thermosetting polymer matrix is preliminarily made either by pultrusion or by spiral winding; after winding the reinforcing fibers from the coils, they are sent to a thermal furnace to remove excess moisture.
  • Fig. 1A-1B depict variants of a multiwire wire made of round wires and round and trapezoidal cross-section wires containing inside a carrier element of continuously reinforced composite material.
  • Fig. 2A-2B illustrate variants of a multiwire wire in which at least three wires contain a support element in the form of a long rod of continuously reinforced composite material and a fiber optic module.
  • FIG. 3A-3F shows cross-sections of wires with an unsealed, sealed conductive core with or without a gap twisted around a strand of twisted or non-twisted wires containing a support member, respectively.
  • Fig. 4 - a diagram of the production of wire wires containing inside a load-bearing element (core) in the form of a long rod from a continuously reinforced composite material with a thermosetting polymer matrix, is a general view;
  • the proposed wire of high-voltage overhead power transmission lines is intended for long-term operation at temperatures of -50 - 300 ° ⁇ .
  • the design of the wires of overhead power lines can be implemented in various final versions (cross-sectional shape of the wires, the presence of a gap between the coils, the number of wires with a supporting element).
  • the multivariate design of the wires is due to a wide range of tasks that are solved when using bare wires, in accordance with the present invention, in overhead lines for transmitting electricity over long distances.
  • design organizations and network companies when choosing the type of wire with wires containing inside the supporting element in the form of a long rod of continuously reinforced composite material, will proceed from specific conditions: the type of terrain, climatic features, and the magnitude of the transmitted power sti, the presence of constraint in the conditions of transmission, the type of fittings used, technical and economic indicators, etc.
  • the wire for overhead power lines (Fig. 1A-1B) contains a multi-wire conductive core 1 made of twisted wires or wires, each of which contains a supporting element 2 in the form of a long rod made of continuously reinforced composite material and a metal part 3 of aluminum, or of copper, or of aluminum alloys, or of copper alloys.
  • the geometric dimensions of the wires of a multi-wire conductive conductor are determined by the nomenclature of the overhead lines.
  • the geometrical dimensions of the supporting element can be selected based on technological limitations determined by the possibility of manufacturing (1 mm) or the flexibility of the wire (25 mm).
  • thermosetting polymer matrix of wires To form a composite supporting element with a thermosetting polymer matrix of wires using:
  • the degree of filling of the polymer heat-resistant matrix with reinforcing fiber is May 30-95. %, and the content of thermosetting heat-resistant polymer binder May 5-70. %
  • thermosetting polymer binder an epoxy composition with a glass transition temperature in the cured state above 100 ° C or thermosetting binders having a glass transition temperature above 100 ° C, based on a compound, is used as a thermosetting polymer binder.
  • a composite carrier with a metal matrix is made of aluminum or aluminum alloys with a content of 8-55 wt.% And metallized carbon fibers with a content of 45-92 wt.%.
  • the metal-composite supporting element provides the wire: increased conductivity (the metal matrix of the composite and the metallized fiber participates in the transmission of electricity), high corrosion, thermal and heat resistance, and resistance to external factors.
  • the service life of wires reinforced with a metal-bearing supporting element can be 70 years or more. This load-bearing element is resistant to compression and allows the use of extruded clamps when hanging wires on the line.
  • the metal-composite carrier element is made by impregnating pre-metallized carbon fibers with aluminum melt or its alloys under pressure or without, followed by drawing the melt-impregnated fibers through a die, in which the melt is cooled to solidify it and obtain a finished carrier element.
  • Metallization of carbon fibers is carried out by the galvanic or chemical method, or by vacuum deposition. Instead of metallization, it is allowed to coat carbon fibers with substances, for example, aluminum-chromophosphate binders, which prevent softening of the fibers upon contact with the aluminum melt and also increase their wettability. To prevent contact corrosion, the supporting element made of a metal composite should be located inside the wires of the conductive core of wire 1.
  • Wires with a composite supporting element with a thermosetting polymer matrix have a weight reduced by about 25%, high flexibility, small sag arrows, relatively low cost, and a wide raw material base for production.
  • the wire according to the invention has fundamental differences from all known wires of overhead lines having a composite core with a polymer thermo- reactive matrix. These differences are due to the fact that in the known wires the core and the conductive part in the form of conductive wires conducting them in one or several types of conductive wires are connected, but, nevertheless, separate structural elements of the wire with their inherent set of physico-mechanical and thermophysical properties. Under operating conditions under the influence of loads, heating-cooling, changes in ambient temperature, the composite core and the conductive part respond differently to changes in operating conditions.
  • the supporting element with a polymer thermosetting matrix of wires is formed to the required dimensions inside the conductive pipe when drawing. This is not a simple crimp. After molding, enormous adhesion forces arise over the entire surface of the pipe between the conductive part and the carrier with a polymer thermosetting matrix.
  • the bearing element and the conductive part in the present invention are integral and respond to changing operating conditions as a whole.
  • the conductive part of the wires provides electric power transmission, protects the carrier element with a polymer thermosetting matrix of a continuously reinforced composite material from moisture, the short-wave part of the solar radiation spectrum, and prevents the development of thermo-oxidative and hydrolytic destruction.
  • a composite supporting element with a polymer thermosetting matrix of the inventive wire provides mechanical strength and resistance to the effects of starvation-hoarfrost formations, wind loads, vibration, temperature changes, wire “dancing”.
  • the main wire of the overhead lines is currently the steel-aluminum wire of the AC. All the main regulatory documents and indicators for the safe operation of uninsulated OHL wires are designed for the characteristics of the speaker wire. A feasibility study on the possibility of using new wires, including wires from a supporting element with a polymer thermosetting matrix, should be carried out based on the quantitative indicators of the speaker wire.
  • a feature of composite materials in contrast, for example, from polymeric materials, is the ability to predict with high accuracy the operational characteristics of the finished material according to the known parameters of the binder and reinforcing fiber, as well as their ratio in the composite material.
  • the characteristics of the supporting element with a polymer thermosetting matrix (tensile strength at break of at least 500 MPa, elastic modulus of at least 50 GPa, coefficient of thermal expansion of less than 1.1x10 "5 1 / ° C) established in the present invention allows to obtain a wire having mechanical strength and stiffness at the level of the speaker wire with an equivalent area of the conductive core, while a wire with wires containing a supporting element with a polymer thermosetting matrix will be 15-30% lighter, less prone to temperatures the impact, especially in the field of elevated temperatures, which, according to the applicant, is minimally sufficient to achieve the technical result of the invention.
  • the maximum value of the tensile strength and elastic modulus of the composite bearing element is not defined, because during the continuous process of improvement and development of technology reinforcing fibers, their strength indicators are steadily increasing .Aramid fibers having a maximum limit are currently known. strengths of 9-10 GPa and high-modulus carbon fibers having a maximum modulus of elasticity of 700-800 GPa.
  • a significant advantage of the proposed wire is the possibility of its multivariate implementation through the use of various source components for the formation of composite material.
  • Each of the recommended types of reinforcing fibers or polymer binder has an individual set of operational and technological characteristics.
  • each type of reinforcing fibers or binders listed in the patent may provide the achievement of the technical result of the invention.
  • Specialists working in the field of development of composite materials have the appropriate knowledge for the final implementation of all variants of the proposed composition of the supporting element with a polymer thermosetting matrix of continuously reinforced composite material.
  • the minimum allowable strength characteristics of the bearing element with a polymer thermosetting matrix determine the lower limit of the content of the reinforcing fiber - 30 wt.% (The rest is a binder). It should be noted that when the binder content is less than 5 wt.%.
  • the permissible range of content of the reinforcing fiber can be set at 30-95 wt.%, And a binder at the level of 5-70 wt.%.
  • the ratio of the cross-sectional area of the metal part of the conductive core of the wire to the cross-sectional area of the supporting elements 2 of the wire can be 0.5-50.
  • the present invention provides the possibility of using both unsealed, twisted from round wires of section 4 (Fig.lA), and a sealed conductive wire core.
  • the conductive core of the wire is sealed to reduce the aerodynamic drag coefficient of the wire, to increase its compactness, thereby increasing the resistance of the wire to the effects of external active environmental factors, such as wind load, icy frost and lightning strikes.
  • the current-carrying conductor of the wire is sealed by twisting pre-shaped wires of a traceal shape 5 (Fig. 1B).
  • the advantages of the proposed wire are: the possibility of using in full operating conditions the mechanical characteristics of the composite supporting element 2 wires, the transmission of electrical power and mechanical loads during operation evenly over the cross section of the wire.
  • the disadvantage of this wire is the high labor costs of its production, associated with the need to manufacture a large number of wires with a composite supporting element 2.
  • a variant of a wire in which wires of a round (Fig. 2 A) or profiled (Fig. 2B) shape with a bearing element are evenly distributed over the cross section of the wire, and the remaining wires of the wire of the conductive core that do not contain the bearing element are shaped the size and type of the conductive material is the same with the wires containing the supporting element 2.
  • W wires of a round (Fig. 2 A) or profiled (Fig. 2B) shape with a bearing element are evenly distributed over the cross section of the wire, and the remaining wires of the wire of the conductive core that do not contain the bearing element are shaped the size and type of the conductive material is the same with the wires containing the supporting element 2.
  • wires with a supporting element 2 - at least three are used as the reinforcing fiber of the carrier element 2 of the wire.
  • the invention provides for the presence of an anti-icing coating wire on an external type of conductive core, for example, based on organosilicon compositions, which impart hydrophobicity to the surface of the wire, thereby providing anti-icing properties.
  • Water droplets that have fallen onto the surface of the anti-icing wire during freezing have a very small contact area with it and, as a result, are easily blown away by the wind without adhesion to the surface. As a result, in critical temperature conditions, the probability of icing of the wire is reduced.
  • the functionality of the proposed wire can be enhanced by including an OKPP optical cable (optical cable in a phase wire) in the form of a fiber optic module (for example, NKT cables ORPC cable) consisting of a metal tube 6 (Fig. 2A) made of aluminum or alloys of aluminum or stainless steel and optical fibers 7 (Fig. 2A) located inside the tube 6 (Fig. 2A).
  • a fiber optic module for example, NKT cables ORPC cable
  • Fig. 2A made of aluminum or alloys of aluminum or stainless steel
  • optical fibers 7 Fig. 2A located inside the tube 6 (Fig. 2A).
  • the wire can be made in the form of multi-wire conductive conductors (Fig. 3A-3F) of round or profiled wires made of aluminum or copper, or from aluminum alloys, or from copper alloys twisted around strand 8 of twisted or non-twisted wires containing a composite supporting element 2.
  • Fig. 3A-3F multi-wire conductive conductors
  • the bearing part of the wire is localized in its central part on the wires with the composite bearing element 2, and the conductive part is made of wires of conductive materials.
  • the bearing part of the wire made in the form of strand 8 made of round wire 4 (Fig. 3) or trapezoidal form 5 (Fig. 3F) containing composite support element 2.
  • Applications of profiled wires (trapezoidal form 5 (Fig. 3F ) allows you to significantly increase the compactness of the wire.
  • the proposed version of the wire provides for the possibility of using both an unsealed conductive core 1, twisted from round wires 9 (Fig. FOR) from conductive materials not containing composite bearing element 2, and a sealed conductive wire core.
  • the conductive core of the wire is sealed by twisting pre-shaped wires of conductive materials that do not contain a composite supporting element 2, trapezoidal 10 (Fig. ⁇ , 3F), or ⁇ -shaped 11 (Fig. ⁇ ).
  • the sealed conductive core may consist of deformed twisted wires 12 (Fig. 3D), obtained after drawing the unsealed wire through the die (not shown in the figures).
  • a gap 13 (Fig. ZE, 3F) between the strand 8 made of wires containing a supporting element and the inner core of the conductive core nearest to them 1.
  • the gap 13 (Fig. ZE, 3F) provides sliding of the wires of the conductive core relative to the strand of wires containing the composite supporting element 2 when hanging the wire, which eliminates mechanical stress on the conductive wire in the field.
  • a wire with a gap, according to the invention, is suspended by a strand of wires containing a composite supporting element 2, which, under operating conditions, perceives all mechanical stress.
  • This design of the wire determines the small (determined only by the linear coefficient of expansion of the wires with the composite supporting element) elongation (sagging) of the wire due to temperature increase.
  • the size of the gap 13 (0.1 - 4 mm) is selected based on the geometric dimensions of the wire and the spectrum of tasks.
  • the minimum gap value (0.1 mm) is sufficient to ensure the sliding of the current coil in heating.
  • a maximum gap of 13 (Fig. ZE) (4 mm) is characteristic of filling this gap to facilitate sliding with thickened oils, organosiloxanes or liquid rubbers.
  • the proposed method of manufacturing a wire is as follows:
  • Glass, carbon or some other reinforcing fiber (Fig. 4) in a dry state is wound from creel bobbin 14 and fed into a thermal furnace 15, heated to a temperature of 150-250 ° C to remove atmospheric moisture from the reinforcing fiber.
  • the reinforcing fibers dried in a thermal furnace 15 in the form of a bundle are drawn into a metal pipe 16 made of aluminum or copper, or aluminum alloys or copper alloys.
  • the metal pipe is filled under pressure with a polymeric binder, and the binder is impregnated with reinforcing fibers.
  • the metal pipe 16, with the bundle of wetted reinforcing fibers inside the binder, is drawn on the drawing machine 17. Passing the dies (not shown) of the drawing machine 17 in series, the metal pipe lengthens while reducing its diameter.
  • the reinforcing fibers are coiled off from the creel bobbins 14, which, after passing through the thermal furnace 15, enter the metal pipe 16. The drawing process is carried out until the metal pipe reaches the set diameter and length values.
  • the molded wire enters the thermal furnace 18, heated to temperatures of 80-
  • a wire with a composite supporting element having a stable cross-sectional dimensions is obtained.
  • the manufactured wire is wound on coils of a twisting machine 19, after which, on twisting machines (not shown in the drawings), the wires of the wire are twisted in accordance with its design.
  • the finished wire is wound around the receiving drum (not shown in the drawings). If necessary, the final curing of the composite supporting element of the wire wires is carried out in a separate thermal furnace (not shown in the drawings).
  • the number and profile of wires with a composite supporting element 2, their location is determined by the design of the wire.
  • all variants of the proposed wire can be made.
  • molded wires according to the proposed method with a composite supporting element with a diameter of 1 to 25 mm and standard twisting machines are used.
  • the twisting of wires into wires on twisting machines is a typical technological operation well known to specialists and does not require additional explanations.
  • standard schemes are used, for example, 1 + 6 + 12, etc., that is, 6 wires in the first coil and 12 wires in the second coil, etc. are twisted around the central wire on twisting machines.
  • a multiwire wire usually has a central wire and wires twisted around it. In this case, the technology for manufacturing stranded wire is identical to the method for manufacturing a single wire.
  • the proposed method assumes the possibility of using long rods (not shown in the drawings) from a continuously reinforced composite material with a polymeric thermoset or metal matrix for forming a wire profile with a composite supporting element.
  • Rods with a polymer thermosetting matrix are preliminarily made by pultrusion or spiral winding and when forming wires they are wetted with a polymer binder.
  • Rods with a metal matrix are not wetted when forming wires with a polymer binder.
  • Composite rods with a polymer thermoset or metal matrix are pulled into a metal pipe 16 instead of a bundle of reinforcing fibers, after which the pipe is filled with a polymeric binder (no filling takes place) with further formation of the wire profile by drawing, twisting the manufactured wires on twisting machines into a finished wire.
  • the use of prefabricated long rods is advisable in case of large friction forces (large wire length or small pipe diameter) when drawing between the wetted reinforcing fiber bundle and the inner surface of the metal pipe 16, which can damage the reinforcing fiber bundle.
  • the preparation of the binder is carried out by mixing at 50 ° C epoxy resin
  • the basalt fiber BYV (roving 1250 tex), having a tensile strength of 3.7 GPa in microplastics and an elastic modulus of 90 GPa, is wound from the creel pulley coils 14 (Fig. 4) at a speed of 10 m / min and passed into a thermal furnace 15 to remove moisture heated to temperature 200 ° ⁇ . After that, a bundle of basalt fibers is drawn into a metal pipe 16 made of aluminum grade A5E 420 m long, having an outer diameter of 8 mm and a wall thickness of 1 mm. The metal pipe 16 is filled with a prepared epoxy binder, as a result of which the fiber is impregnated. On the drawing machine 17, the metal pipe 16 is drawn by passing sequentially through the wolves.
  • basalt fibers When drawing as the length of the pipe increases and its diameter decreases, basalt fibers are rewound from the creel of the creel 14. The coiled basalt fibers pass through the thermal furnace 15 and are drawn into the pipe 16. The drawing speed and the rate of winding of basalt fibers are consistent.
  • a molded pipe with an inside bundle of reinforcing fibers moistened with a polymer binder undergoes heat treatment in a thermal furnace 18, Fig. 4, (temperature 150 ° C, residence time in the oven 3 minutes) and wound on a drum.
  • the final curing of the core takes place in a thermo-furnace directly on the drum at a temperature of 90 ° C, the curing time is 5 hours.
  • the content of reinforcing fibers in the finished carrier 2 (diameter 2 mm) of the obtained wire is 80% (May), epoxy binder 20% ( May).
  • the drums with the finished wire are placed on a twisting machine and twisted the wire, consisting of 19 wires, containing 2 coils, the twisting of which is carried out in opposite directions.
  • the wire is wound on a take-up reel.
  • the resulting wire (aluminum section 179 mm 2 ) has the following indicators: tensile strength 115,000 n, weight 600 kg / km, the coefficient of thermal expansion of the composite bearing element of wires 1.2x10 "6 1 / deg, the temperature limit of continuous operation is 90 ° C; short-term heating is possible, up to 180 ° C.
  • the resulting wire is 1.85 times stronger than speaker wires with a similar cross-section of the current-conducting part of the wire, 15% lighter, and the temperature expansion coefficient of the composite wire carrier element is 10 times lower.
  • the preparation of the binder is carried out by mixing UP-643 epoxy resin (32 wt.%) With ER epoxy (48 wt.%) And hardener UP 0638/1 (20 wt.%).
  • a carbon fiber rod with a diameter of 3 mm, having a breaking strength of 2.5 GPa, an elastic modulus of 140 GPa and a glass transition temperature of 230 ° C, is wound from the drum of the delivery device at a speed of 20 m / min and drawn into a metal pipe made of stainless steel 600 m long, having an outer diameter of 6.8 mm and a wall thickness of 0.2 mm.
  • Prepared epoxy binder is fed into a metal pipe. On a drawing machine, the metal pipe is drawn by passing successively through the dies. When dragging as the length of the pipe increases and its diameter decreases, the carbon fiber rod is unwound from the drum of the delivery device. The drawing speed and the winding speed of the carbon fiber rod are matched.
  • a molded pipe with an inside core wetted with a polymer binder (outer diameter 3.4 mm, length 1500 m) is wound on a drum. Open- the binder is waiting in the thermal furnace directly on the drum at a temperature of 90 ° C for 2 hours, then at a temperature of 140 ° C for 3 hours.
  • the drums with the obtained wire, as well as with the wire of aluminum zirconium alloy, are placed on a twisting machine and twisted a strand consisting of 7 round wires, 4 of which are made of stainless steel and equipped with a supporting element, which is a composite continuously reinforced core.
  • a supporting element which is a composite continuously reinforced core.
  • metals and alloys that are close in their physicochemical and thermal properties to the properties of the carbon fiber bearing element for example, such as stainless steels, precision iron-nickel alloys, titanium or its alloys, etc.
  • Two strands of trapezoidal wires of heat-resistant aluminum are applied to the strand minium zirconium alloy.
  • the resulting wire (aluminum section 300 mm, diameter 21.6 mm) has the following characteristics: tensile strength 124,000 n, weight 915 kg / km, thermal expansion coefficient of the composite wire carrier element 1.6x10 "6 1 / hail, temperature limit of continuous operation 180 ° ⁇ , short-term heating up to 210 ° ⁇ is possible.
  • the resulting wire (example 2) is 1.65 times stronger than AC (240/32) steel-aluminum wire with the same diameter and weight, the aluminum section is 25% larger, the coefficient of thermal expansion of the composite wire carrier element is 7.5 times lower than the coefficient thermal expansion of steel wires of AC wire.

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  • Non-Insulated Conductors (AREA)
  • Ropes Or Cables (AREA)

Abstract

L'invention se rapporte au domaine de la production d'électricité et concerne une structure de câble pour lignes électriques aériennes et pour réseaux électriques, ainsi que des procédés de fabrication. Le câble pour ligne électrique aérienne comprend une âme conductrice multibrins comprenant plusieurs brins, au moins trois brins de l'âme conductrice multibrins comprenant un élément porteur disposé dans chacun de ces brins et se présentant sous forme d'une tige allongée faite d'un matériau composite renforcé en continu et comportant une matrice polymère ou métallique thermo-réactive. L'invention permet de fabriquer des câbles pour lignes électriques aériennes qui possèdent une plus grande résistance mécanique, un faible coefficient de dilatation, un poids réduit, qui soient fiables et qui possèdent une grande résistance à l'action de facteurs actifs du milieu environnant dans les conditions d'exploitation. Ce câble offre de grandes ressources d'exploitation, et permet d'augmenter les capacité de transmission des lignes aériennes.
PCT/RU2014/000413 2013-06-14 2014-06-05 Câble pour ligne électrique aérienne et procédé de fabrication Ceased WO2014200388A2 (fr)

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RU2013126953 2013-06-14
RU2013126953/07A RU2568188C2 (ru) 2013-06-14 2013-06-14 Провод для воздушных линий электропередач и способ его изготовления

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WO2014200388A2 true WO2014200388A2 (fr) 2014-12-18
WO2014200388A3 WO2014200388A3 (fr) 2015-06-11

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CN107833662A (zh) * 2017-10-20 2018-03-23 南方电网科学研究院有限责任公司 一种绞合式碳纤维防风导线
CN109243698A (zh) * 2018-09-28 2019-01-18 上海电缆研究所有限公司 架空导线用热塑性复合芯体及其制造方法
EP3437168A1 (fr) * 2016-03-29 2019-02-06 innogy SE Procédé d'extension de la capacité de transmission électrique d'un système de pylônes de lignes électriques aériennes
US20200194989A1 (en) * 2018-01-24 2020-06-18 Ctc Global Corporation Termination arrangement for an overhead electrical cable

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RU2599387C1 (ru) * 2015-07-23 2016-10-10 Общество с ограниченной ответственностью "Технология 21 века" (ООО "Т21") Бикомпонентный проводник
RU2609129C1 (ru) * 2015-10-22 2017-01-30 Андрей Витальевич Андреев Электрический проводник
RU180984U1 (ru) * 2018-01-23 2018-07-03 ООО "Северный кабель" Защищенный изолированный провод с антиобледенительным покрытием
RU2703564C1 (ru) * 2018-09-18 2019-10-21 Общество с ограниченной ответственностью "Научно-производственное предприятие "НАНОЭЛЕКТРО" Композитный контактный провод
RU2709025C1 (ru) * 2019-05-23 2019-12-13 федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный авиационный технический университет" Способ получения алюминиевых композитных проводов, армированных длинномерным волокном

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RU2065191C1 (ru) * 1993-07-15 1996-08-10 Алексей Григорьевич Ионов Волоконно-оптический модуль
HUE031998T2 (en) * 2002-04-23 2017-08-28 Ctc Global Corp Aluminum conductor composite core reinforced wire and method for producing it
CN102139543B (zh) * 2003-10-22 2016-08-03 Ctc电缆公司 铝导体复合材料芯增强电缆及其制备方法
US8525033B2 (en) * 2008-08-15 2013-09-03 3M Innovative Properties Company Stranded composite cable and method of making and using
RU86345U1 (ru) * 2009-04-10 2009-08-27 Фердинанд Иренеушевич Стасюлевич Проволока с упрочняющим сердечником
RU109901U1 (ru) * 2011-04-15 2011-10-27 Учреждение Российской академии наук Институт физической химии и электрохимии им. А.Н. Фрумкина РАН Неизолированный провод с супергидрофобным антиобледенительным покрытием для воздушных линий электропередач

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EP3437168A1 (fr) * 2016-03-29 2019-02-06 innogy SE Procédé d'extension de la capacité de transmission électrique d'un système de pylônes de lignes électriques aériennes
CN107833662A (zh) * 2017-10-20 2018-03-23 南方电网科学研究院有限责任公司 一种绞合式碳纤维防风导线
US20200194989A1 (en) * 2018-01-24 2020-06-18 Ctc Global Corporation Termination arrangement for an overhead electrical cable
US12136804B2 (en) * 2018-01-24 2024-11-05 Ctc Global Corporation Termination arrangement for an overhead electrical cable
CN109243698A (zh) * 2018-09-28 2019-01-18 上海电缆研究所有限公司 架空导线用热塑性复合芯体及其制造方法

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RU2013126953A (ru) 2014-12-20
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