WO2022057081A1 - Metal-clad composite molded wire stranded reinforced core overhead conductor and manufacturing method therefor - Google Patents

Abstract

The present invention relates to the technical field of power transmission and distribution overhead conductors, and particularly relates to a metal-clad composite molded wire stranded reinforced core overhead conductor and a manufacturing method therefor. In the present invention, a metal tube clad material is used as a prepreg of a composite material to prepare a wire rod; the wire rod is then stranded, deformed and cured to form a reinforced core; and finally, an aluminum molded wire is stranded on an outer layer of the reinforced core to prepare the metal-clad composite molded wire stranded reinforced core overhead conductor. The present invention has the advantages that the reinforced core has a large bending moment and a large elastic modulus, and is less prone to breakage; the overhead conductor is convenient to wind, and same has a good sag characteristic, a good weather resistance and a good conductivity; and the whole manufacturing method is simple, efficient, economical and reliable.

Description

A kind of metal-clad composite material profile wire stranded and reinforced core overhead conductor and manufacturing method thereof technical field

The invention belongs to the technical field of power transmission and distribution overhead wires, in particular to a metal-clad composite material profile wire stranded reinforced core overhead wire and a manufacturing method thereof.

Background technique

The reinforcing core of the existing composite material core overhead conductor is mostly made of resin-based longitudinally continuous carbon fiber reinforced composite material, which has the characteristics of high specific strength, specific modulus, extremely low linear expansion coefficient, etc., and is reinforced with carbon fiber reinforced composite material. The core replaces the relatively low-level steel strand reinforced core, which solves the technical bottleneck of overhead transmission and distribution lines in terms of capacity expansion, energy saving, sag improvement, and large span, and has achieved good technical and economic value.

However, the existing carbon fiber reinforced composite material reinforced core has problems such as difficulty in winding, radial pressure resistance, easy breakage, fear of impact, poor weather resistance, and high cost, so it has not been widely popularized and applied.

technical problem

The mandrel, that is, the reinforced core of the rod-shaped carbon fiber reinforced composite material, usually has a winding failure multiple greater than 100 times the diameter of the mandrel, so it cannot meet the permitted bending conditions of the existing equipment in the process of product manufacturing and application. Patents CN201142240U and CN206349162U both arrange a certain number of low-modulus glass fibers on the outer layer of the mandrel, and use the pultrusion technology to make the mandrel. The necessary winding and bending conditions in the current production and application process.

However, practice has proved that the technical conditions for 50 times the diameter of the mandrel to be wound without damage are not sufficient. In the process of production and application, some unintentional over-bending often occurs and the mandrel is damaged, and if the outer layer of the mandrel continues to increase The proportion of low modulus fibers to improve the bending properties, the longitudinal mechanical properties of the mandrel will drop to an unacceptable level.

Patents CN104538107A, CN105679459B and CN105702352B use pultrusion technology to make mandrels, and the mandrels are continuously covered with aluminum under prestress, which can greatly improve the longitudinal bending moment of the aluminum-coated mandrels, thereby increasing the threshold for mandrel breakage , The structure of the aluminum-coated mandrel improves the mandrel's ability to resist breakage, impact, radial pressure and weather.

However, after the mandrel is coated with aluminum, it only increases the bending moment, and does not reduce the allowable winding failure factor of the mandrel itself. Unintentional over-bending action with large torque during the production and application process of the product will also damage the mandrel. .

Patents CN101295564B, CN203295883U and CN201933348U all design the reinforcing core as a stranded structure, which reduces the allowable winding failure multiple of the reinforcing core, but also greatly reduces the bending moment of the reinforcing core. Accidents in which the reinforcement core is damaged due to excessive bending are prone to occur. The production method is as follows: tightly wrapping fiber ribbons on the surface of the prepreg wire to form a single wire, twisting a plurality of single wires into a cable, and then heating the cable to complete curing and forming.

However, there are problems: when the resin in the prepreg is heated and cured, the tightly wound fiber ribbons on the surface of the prepreg cannot prevent the severe deformation of the single wire when it is twisted into a cable, and the resin will ooze out during heating and twisting. , the resin in the single wire penetrates each other, resulting in the adhesion and curing of the single wire, so the twisted structure loses the bending characteristics that it should have.

The continuous dismantling and re-twisting technology proposed by CN201933348U restores the turbulence that the stranded structure should have, but the dimensional deviation of its single wire exceeds the standard by 10 times, and the produced stranded reinforcing core has poor ductility. Splices and anchoring leave a safety hazard.

The patent CN105304189A designs the reinforcement core as a stranded structure of stainless steel armored single wire. The reinforcement core of this structure has a lower winding failure multiple and a higher bending moment, which can better solve the problem of easy breakage and other reinforcement cores. existing problems. The production method is as follows: use the pultrusion technology to make a composite wire with a diameter of 1.7-4.0mm, use the longitudinal clad welding technology to armor the wire with stainless steel with a thickness of 0.1-0.2mm, and then twist a plurality of stainless steel armored wires into cables. .

However, since the resin-based fiber-reinforced composite material used in it cannot be plastically deformed, the resin-based fiber-reinforced composite material is forcibly elastically deformed into a helix during the process of twisting into a cable, which leads to the allowable bending limit of the cable. It is discounted, and when the cable loses the external force restraint, the entire cable will spring open. When the single wires with a circular cross-section are twisted into a cable, the two layers of single wires are in cross-point contact, and the wires are under high tension and crimping. , the pressure at the contact point is enough to damage the internal composite material, so the fabrication method cannot guarantee the realization of the structural performance.

To sum up, there is an urgent need in the market for a composite stranded reinforcing core that is easy to wind, not easy to break, and has good weather resistance, and an overhead conductor prepared therefrom.

technical solutions

The purpose of the present invention is to provide a metal-clad composite material type wire stranded reinforced core overhead wire and a manufacturing method thereof, which can prepare a wire by cladding a prepreg made of a composite material through a metal tube, and then the wire is stranded , deformed and solidified into a reinforcing core, and finally, the metal-clad composite material profile wire is stranded and reinforced core overhead conductor is obtained by twisting the aluminum profile wire on the outer layer of the reinforcing core. The invention has the advantages of large bending moment of the reinforcing core, large elastic modulus, not easy to break, convenient winding of the overhead wire, good sag characteristic, good weather resistance, good electrical conductivity, and the overall manufacturing method is simple, efficient, economical and reliable.

The technical solution adopted by the present invention to solve the above problems is: a metal-clad composite material profile wire stranded reinforced core overhead wire, comprising a reinforced core, and a plurality of aluminum profile wires stranded on the outer layer of the reinforced core. The core includes a plurality of stranded moulding wires, the moulding wires include a metal tube, and a composite material tube inner material obtained by curing a prepreg.

In the present invention, the structure of the shaped wire is "metal-clad composite material", the reinforcing core is obtained by twisting the shaped wire, and the overhead conductor includes the reinforcing core. Wherein, the profiled wire is in a spiral shape after being twisted and solidified, and the prepreg is covered by the tube blank and then heated and solidified, that is, the metal tube is covered with the inner material of the composite material tube, which can comprehensively solve the existing problems. In the technology, the composite reinforced core has defects such as difficulty in winding, easy breakage and poor weather resistance.

A further preferred technical solution is that: the material of the metal pipe is any one of galvanized steel, stainless steel, aluminum or aluminum alloy.

A further preferred technical solution is that the prepreg is a resin-impregnated reinforcing fiber, and the reinforcing fiber is a mixture of any one or more fibers selected from carbon fibers, glass fibers, ceramic fibers, basalt fibers, and polyethylene fibers.

A further preferred technical solution is that: the aluminum profile wire is a mixture of any one or more of the round or special-shaped hard aluminum wire, soft aluminum wire, and aluminum alloy wire.

A further preferred technical solution is that: the resin is a thermosetting or thermoplastic resin.

A method for manufacturing a metal-clad composite material profile wire stranded and reinforced core overhead wire, comprising the following steps in sequence:

S1, making the prepreg and tube blank;

S2, bringing the prepreg into the tube blank, and obtaining a metal tube-wrapped prepreg wire through a diameter reduction deformation operation;

S3. Twisting, deforming, and heating the metal tube-wrapped prepreg wire to obtain the reinforcing core, wherein the prepreg is cured into the composite tube inner material, and the metal tube-wrapped prepreg is The wire is formed into the profile;

S4, twisting the aluminum profile wire on the reinforcing core to obtain the overhead wire.

A further preferred technical solution is as follows: in S1, the fiber tow passes through the resin tank and the yarn separation filter mold in turn to obtain the prepreg; the tube blank is welded by the metal belt through the longitudinal wrapping die and the continuous welding machine. Formed, or extruded from a metal rod through an overmold and temperature control device.

In the present invention, thousands of the fiber bundles are combined together to form the reinforcing fibers, and the yarn separation and plastic filtering mold is the existing plastic filtering equipment, which is used to maintain the resin on the reinforcing fibers. The amount is stable and controllable.

In addition, if the tube blank is obtained by the method of longitudinal clad welding of galvanized steel, it is also necessary to carry out anti-corrosion treatment on the surface of the welding seam through an online thermal spraying zinc device and a fume removal device.

A further preferred technical solution is: in S2, the diameter reduction deformation operation is obtained by a clamping traction device, a wheel traction device and a drawing die, or a rolling device, the wheel traction device and the drawing die. The metal tube wraps the prepreg wire.

In the present invention, during the diameter reduction deformation operation, the prepreg will extrude the mixed air and excess resin toward the tube blank, that is, to the outside, to ensure that the prepreg can be cured into the desired shape. The inner material of the composite material pipe.

A further preferred technical solution is as follows: in S3, the metal tube-wrapped prepreg wire is wound to obtain a coiled metal tube-wrapped prepreg wire, and the coiled metal tube-wrapped prepreg wire is drawn in a stranding machine traction device. Under the driving of the wire and the pressing mold, the deformation and stranding operation of the metal tube package prepreg wire is completed, and then the curing operation of the prepreg is completed through the heating device, and finally on the winding reel A coiled reinforcing core is obtained.

A further preferred technical solution is as follows: in S4, a frame type stranding machine with no untwisting is used to twist the aluminum profile wire on the reinforcing core to obtain the overhead conductor.

beneficial effect

In the present invention, the wire rod is prepared by cladding the metal tube with the prepreg material of the composite material, and then the wire rod is twisted, deformed and cured into a reinforcing core, and finally the aluminum profile wire is twisted on the outer layer of the reinforcing core to obtain the wire rod. Metal clad composite profile wire stranded reinforced core overhead conductor. The invention has the advantages of large bending moment of the reinforcing core, large elastic modulus, not easy to break, convenient winding of the overhead wire, good sag characteristic, good weather resistance, good electrical conductivity, and the overall manufacturing method is simple, efficient, economical and reliable.

Description of drawings

FIG. 1 is a schematic structural diagram of a metal-clad composite material profile wire stranded and reinforced core overhead conductor in the present invention.

FIG. 2 is a flow chart of a method for manufacturing a metal tube package prepreg wire in the case where the tube blank is made from a metal strip in the present invention.

FIG. 3 is a flow chart of a method for manufacturing a metal tube package prepreg wire material in the case where the tube blank is made from a metal rod in the present invention.

FIG. 4 is a flow chart of a manufacturing method of the present invention for preparing a reinforcing core by twisting a coiled metal tube-wrapped prepreg wire.

BEST MODE FOR CARRYING OUT THE INVENTION

The following descriptions are only preferred embodiments of the present invention, and do not limit the scope of the present invention.

Example 1

As shown in FIGS. 1 , 2 and 4 , a metal-clad composite material profile wire stranded reinforced core overhead conductor includes a reinforcement core 23 and a plurality of aluminum profile wires stranded on the outer layer of the reinforcement core 23 30. The reinforcing core 23 includes a plurality of twisted molding lines, the molding lines include a metal tube 231, and a composite material tube inner material 232, and the composite material tube inner material 232 is obtained by curing the prepreg 10.

The material of the metal tube 231 is galvanized steel, the prepreg 10 is a reinforcing fiber impregnated with resin, the reinforcing fiber is a carbon fiber, the aluminum profile wire 30 is a soft aluminum wire, and the resin is an existing resin. Thermosetting resin.

A method for manufacturing a metal-clad composite material profile wire stranded and reinforced core overhead wire, comprising the following steps in sequence:

S1, making the prepreg 10 and the tube blank;

S2, bringing the prepreg 10 into the tube blank, and obtaining a metal tube package prepreg wire 2 through a diameter reduction deformation operation;

S3. Perform the stranding operation on the metal tube-wrapped prepreg wire 2 to obtain the reinforcing core 23, wherein the prepreg 10 is cured into the composite tube inner material 232, and the metal tube-wrapped prepreg is The wire 2 is formed into the profile;

S4, twisting the aluminum profile wire 30 on the reinforcing core 23 to obtain the overhead wire.

In S1 , the fiber tow 12 passes through the resin tank 13 and the yarn separation and glue filter mold 11 in sequence to obtain the prepreg 10 ; the tube blank is passed through the guide roller, the longitudinal wrapping mold 9 and the continuous welding machine 8 by the metal belt 14 . The metal strip 14 is a galvanized steel strip with a thickness of 7-10% of the equivalent diameter of the profile line, and the longitudinal package is welded into an outer diameter of 140-170% of the equivalent diameter of the profile line. The tube blank, the fiber tow 12 selects 6k or 12k carbon fiber tow, wherein 6k or 12k refers to the specification of the carbon fiber, 6k is that the carbon fiber is composed of 6000 carbon fiber tows, and 12k is the same 12,000 roots.

In S2, the reduction deformation operation is performed through the clamping traction device 7, the wheel traction device 3 and the two drawing dies 6 to obtain the metal tube package prepreg wire 2, wherein the tube blank is formed as The metal tube 231 with a diameter equal to the equivalent diameter of the profile line, and the prepreg 10 in the tube extrudes the air mixed in the direction of the tube blank under the pressure of the tube blank reducing the diameter and excess resin.

The online thermal spraying zinc device 5 and the fume removal device 4 are used to perform anticorrosion treatment on the surface of the welded seam of the tube blank, and are arranged in the upper stage of the wheel traction device 3 in sequence.

In S3, the metal tube-wrapped prepreg wire 2 is wound to obtain a coiled metal tube-wrapped prepreg wire 1, and the coiled metal tube-wrapped prepreg wire 1 is drawn in the stranding machine pulling device 22 and the stranding cage Under the driving of the wire, first pass through the wire compressing mold 20 to complete the deformation and stranding operation of the metal tube package prepreg wire 2, and then pass through the heating device 21 to complete the curing operation of the prepreg 10, and finally in the A coiled reinforcing core 24 is obtained on the take-up reel.

In S4 , the aluminum profile wire 30 of the soft aluminum wire is twisted on the reinforcing core 23 by using a frame type stranding machine with no untwisting to obtain a galvanized steel clad carbon fiber composite profile wire stranded reinforcing core overhead wire.

In this embodiment, the tube blank is the name of the metal tube 231 before it is completely formed, the prepreg 10 is the name of the composite material tube inner material 232 before it is completely formed, and the composite material refers to resin The combination with the reinforcing fibers finally makes the reinforcing core 23 have the advantages of large bending moment, large elastic modulus, and not easy to be broken.

The galvanized steel strip has the characteristics of low price, high elastic modulus, moderate strength and corrosion resistance. It is used for the armoring layer of the metal-clad composite material profile, which can greatly improve the bending moment and elasticity of the reinforcing core. modulus. The galvanized ladle composite wire stranded reinforcing core comprehensively solves the defects of the existing reinforcing core such as difficulty in winding, easy breakage, poor weather resistance, etc. The production cost of the composite reinforcing core is greatly reduced.

Embodiments of the present invention

Example 2

As shown in FIGS. 1 , 2 and 4 , a metal-clad composite material profile wire stranded reinforced core overhead conductor includes a reinforcement core 23 and a plurality of aluminum profile wires stranded on the outer layer of the reinforcement core 23 30. The reinforcing core 23 includes a plurality of twisted molding lines, the molding lines include a metal tube 231, and a composite material tube inner material 232, and the composite material tube inner material 232 is obtained by curing the prepreg 10.

The metal tube 231 is made of stainless steel, the prepreg 10 is a reinforcing fiber impregnated with resin, the reinforcing fiber is carbon fiber, the aluminum profile wire 30 is a soft aluminum wire, and the resin is an existing thermosetting resin .

A method for manufacturing a metal-clad composite material profile wire stranded and reinforced core overhead wire, comprising the following steps in sequence:

S1, making the prepreg 10 and the tube blank;

S2, bringing the prepreg 10 into the tube blank, and obtaining a metal tube package prepreg wire 2 through a diameter reduction deformation operation;

S3. Perform the stranding operation on the metal tube-wrapped prepreg wire 2 to obtain the reinforcing core 23, wherein the prepreg 10 is cured into the composite tube inner material 232, and the metal tube-wrapped prepreg is The wire 2 is formed into the profile;

S4, twisting the aluminum profile wire 30 on the reinforcing core 23 to obtain the overhead wire.

In S1 , the fiber tow 12 passes through the resin tank 13 and the yarn separation and glue filter mold 11 in sequence to obtain the prepreg 10 ; the tube blank is passed through the guide roller, the longitudinal wrapping mold 9 and the continuous welding machine 8 by the metal belt 14 . The metal strip 14 is a stainless steel strip with a thickness of 7-10% of the equivalent diameter of the profile line, and the longitudinal package is welded into a stainless steel strip with an outer diameter of 140-170% of the equivalent diameter of the profile line. Described tube blank, described fiber tow 12 selects 6k or 12k carbon fiber tow for use, wherein 6k or 12k refers to the specification of carbon fiber, 6k is that carbon fiber is composed of 6000 carbon fiber tows, and similarly 12k is 12,000 carbon fiber tows. .

In S2, the reduction deformation operation is performed through the clamping traction device 7, the wheel traction device 3 and the two drawing dies 6 to obtain the metal tube package prepreg wire 2, wherein the tube blank is formed as The metal tube 231 with a diameter equal to the equivalent diameter of the profile line, and the prepreg 10 in the tube extrudes the air mixed in the direction of the tube blank under the pressure of the tube blank reducing the diameter and excess resin.

In S3, the metal tube-wrapped prepreg wire 2 is wound to obtain a coiled metal tube-wrapped prepreg wire 1, and the coiled metal tube-wrapped prepreg wire 1 is drawn in the stranding machine pulling device 22 and the stranding cage Under the driving of the wire, first pass through the wire compressing mold 20 to complete the deformation and stranding operation of the metal tube package prepreg wire 2, and then pass through the heating device 21 to complete the curing operation of the prepreg 10, and finally in the A coiled reinforcing core 24 is obtained on the take-up reel.

In S4 , the aluminum profile wire 30 of the soft aluminum wire is twisted on the reinforcing core 23 by using a frame type stranding machine with no untwisting to obtain a galvanized steel clad carbon fiber composite profile wire stranded reinforcing core overhead wire.

In this embodiment, the tube blank is the name of the metal tube 231 before it is completely formed, the prepreg 10 is the name of the composite material tube inner material 232 before it is completely formed, and the composite material refers to resin The combination with the reinforcing fibers finally makes the reinforcing core 23 have the advantages of large bending moment, large elastic modulus, and not easy to be broken.

The stainless steel tape has the characteristics of slightly high price, high linear expansion coefficient, high elastic modulus, moderate strength and corrosion resistance. It is used for the armor layer of the metal-clad composite material profile, which can greatly improve the reinforcement core. bending moment and elastic modulus. The stainless steel clad composite wire stranded reinforcing core comprehensively solves the defects of the existing reinforcing core such as difficulty in winding, easy breakage, poor weather resistance, etc. Substantially reduce the production cost of the composite reinforcing core.

Example 3

As shown in FIGS. 1 , 2 and 4 , a metal-clad composite material profile wire stranded reinforced core overhead conductor includes a reinforcement core 23 and a plurality of aluminum profile wires stranded on the outer layer of the reinforcement core 23 30. The reinforcing core 23 includes a plurality of twisted molding lines, the molding lines include a metal tube 231, and a composite material tube inner material 232, and the composite material tube inner material 232 is obtained by curing the prepreg 10.

The material of the metal tube 231 is aluminum or aluminum alloy, the prepreg 10 is a reinforcing fiber impregnated with resin, the reinforcing fiber is a carbon fiber, the aluminum profile wire 30 is a soft aluminum wire, and the resin is an existing resin. of thermosetting resins.

A method for manufacturing a metal-clad composite material profile wire stranded and reinforced core overhead wire, comprising the following steps in sequence:

S1, making the prepreg 10 and the tube blank;

S2, bringing the prepreg 10 into the tube blank, and obtaining a metal tube package prepreg wire 2 through a diameter reduction deformation operation;

S3. Perform the stranding operation on the metal tube-wrapped prepreg wire 2 to obtain the reinforcing core 23, wherein the prepreg 10 is cured into the composite tube inner material 232, and the metal tube-wrapped prepreg is The wire 2 is formed into the profile;

S4, twisting the aluminum profile wire 30 on the reinforcing core 23 to obtain the overhead wire.

In S1 , the fiber tow 12 passes through the resin tank 13 and the yarn separation and glue filter mold 11 in sequence to obtain the prepreg 10 ; the tube blank is passed through the guide roller, the longitudinal wrapping mold 9 and the continuous welding machine 8 by the metal belt 14 . The metal strip 14 is an aluminum or aluminum alloy strip with a thickness of 10-20% of the equivalent diameter of the profile line, and the longitudinal package is welded into an outer diameter of 140-200% of the equivalent diameter of the profile line. % of the tube blank, the fiber tow 12 selects 6k or 12k carbon fiber tow, wherein 6k or 12k refers to the specification of the carbon fiber, and 6k means that the carbon fiber is composed of 6000 carbon fiber tows. Similarly, 12k is the for 12000 roots.

In S2, the reduction deformation operation is performed through the clamping traction device 7, the wheel traction device 3 and the two drawing dies 6 to obtain the metal tube package prepreg wire 2, wherein the tube blank is formed as The metal tube 231 with a diameter equal to the equivalent diameter of the profile line, and the prepreg 10 in the tube extrudes the air mixed in the direction of the tube blank under the pressure of the tube blank reducing the diameter and excess resin.

In S3, the metal tube-wrapped prepreg wire 2 is wound to obtain a coiled metal tube-wrapped prepreg wire 1, and the coiled metal tube-wrapped prepreg wire 1 is drawn in the stranding machine pulling device 22 and the stranding cage Under the driving of the wire, first pass through the wire compressing mold 20 to complete the deformation and stranding operation of the metal tube package prepreg wire 2, and then pass through the heating device 21 to complete the curing operation of the prepreg 10, and finally in the A coiled reinforcing core 24 is obtained on the take-up reel.

In S4 , the aluminum profile wire 30 of the soft aluminum wire is twisted on the reinforcing core 23 by using a frame type stranding machine with no untwisting to obtain a galvanized steel clad carbon fiber composite profile wire stranded reinforcing core overhead wire.

In this embodiment, the tube blank is the name of the metal tube 231 before it is completely formed, the prepreg 10 is the name of the composite material tube inner material 232 before it is completely formed, and the composite material refers to resin The combination with the reinforcing fibers finally makes the reinforcing core 23 have the advantages of large bending moment, large elastic modulus, and not easy to be broken.

Aluminum has a low modulus of elasticity, and when used in the armor layer of a composite profile, a larger thickness is required to significantly increase the bending moment of the composite reinforcement core. The aluminum-clad carbon fiber composite wire stranded reinforcing core comprehensively solves the defects of the prior art composite reinforcing core, such as difficulty in winding, easy breakage, poor weather resistance, etc. The production cost of the composite reinforcement core is greatly reduced. Aluminum is both the armoring layer of the composite material profile and the conductive material of the overhead wire, and its technical and economic value is greater.

Example 4

As shown in FIGS. 1 , 3 and 4 , a metal-clad composite material profile wire stranded reinforced core overhead conductor includes a reinforcement core 23 and a plurality of aluminum profile wires stranded on the outer layer of the reinforcement core 23 30. The reinforcing core 23 includes a plurality of twisted molding lines, the molding lines include a metal tube 231, and a composite material tube inner material 232, and the composite material tube inner material 232 is obtained by curing the prepreg 10.

The material of the metal tube 231 is aluminum or aluminum alloy, the prepreg 10 is a reinforcing fiber impregnated with resin, the reinforcing fiber is a carbon fiber, the aluminum profile wire 30 is a soft aluminum wire, and the resin is an existing resin. of thermosetting resins.

A method for manufacturing a metal-clad composite material profile wire stranded and reinforced core overhead wire, comprising the following steps in sequence:

S1, making the prepreg 10 and the tube blank;

S2, bringing the prepreg 10 into the tube blank, and obtaining a metal tube package prepreg wire 2 through a diameter reduction deformation operation;

S3. Perform the stranding operation on the metal tube-wrapped prepreg wire 2 to obtain the reinforcing core 23, wherein the prepreg 10 is cured into the composite tube inner material 232, and the metal tube-wrapped prepreg is The wire 2 is formed into the profile;

S4, twisting the aluminum profile wire 30 on the reinforcing core 23 to obtain the overhead wire.

In S1, the fiber tow 12 passes through the resin tank 13 and the yarn separation and glue filter mold 11 in sequence to obtain the prepreg 10; the tube blank is passed through the metal rod 141 through the coating die 91 of the continuous aluminum coating machine and the temperature The control device 81 is extruded and formed, and the metal rod 141 is an aluminum rod or an aluminum alloy rod with a diameter of 8.0-9.5 mm, and is extruded into the tube blank whose outer diameter is 140-200% of the equivalent diameter of the profile line, The fiber tow 12 selects 6k or 12k carbon fiber tow, wherein 6k or 12k refers to the specification of carbon fiber, 6k means that the carbon fiber is composed of 6000 carbon fiber tows, and similarly 12k is 12000.

In S2, the diameter reduction deformation operation is performed through the rolling device 71, the drawing die 6 and the wheel traction device 3 to obtain the metal tube-wrapped prepreg wire 2, wherein the tube blank is formed with a diameter equal to the The metal tube 231 with the equivalent diameter of the profile line is an aluminum tube, and the prepreg 10 in the tube is extruded and mixed in the direction of the tube blank under the pressure of the tube blank reducing diameter. Air and excess resin.

In S3, the metal tube-wrapped prepreg wire 2 is wound to obtain a coiled metal tube-wrapped prepreg wire 1, and the coiled metal tube-wrapped prepreg wire 1 is drawn in the stranding machine pulling device 22 and the stranding cage Under the driving of the wire, first pass through the wire compressing mold 20 to complete the deformation and stranding operation of the metal tube package prepreg wire 2, and then pass through the heating device 21 to complete the curing operation of the prepreg 10, and finally in the A coiled reinforcing core 24 is obtained on the take-up reel.

In S4 , the aluminum profile wire 30 of the soft aluminum wire is twisted on the reinforcing core 23 by using a frame type stranding machine with no untwisting to obtain a galvanized steel clad carbon fiber composite profile wire stranded reinforcing core overhead wire.

In this embodiment, the tube blank is the name of the metal tube 231 before it is completely formed, the prepreg 10 is the name of the composite material tube inner material 232 before it is completely formed, and the composite material refers to resin The combination with the reinforcing fibers finally makes the reinforcing core 23 have the advantages of large bending moment, large elastic modulus, and not easy to be broken.

Aluminum has a low modulus of elasticity, and when used in the armor layer of a composite profile, a larger thickness is required to significantly increase the bending moment of the composite reinforcement core. The seamless aluminum-clad carbon fiber composite profile wire stranded reinforcing core comprehensively solves the defects of the existing composite reinforcing core such as difficulty in winding, easy breakage, poor weather resistance, etc. The production method has the characteristics of simplicity, efficiency and reliability. The manufacturing cost of the composite reinforcing core can be greatly reduced. Aluminum is not only the armor layer of the composite material profile but also the conductive material of the overhead conductor, and its technical and economic value is more significant.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, and within the scope of knowledge possessed by those of ordinary skill in the technical field, it can also be done without departing from the purpose of the present invention. various modifications. These are all non-creative modifications, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims (10)

1. A metal-clad composite material profile wire stranded reinforced core overhead conductor, characterized by comprising a reinforced core (23), and a plurality of aluminum profile wires (30) stranded on the outer layer of the reinforced core (23), so that the The reinforcing core (23) includes a plurality of stranded shaped wires, the shaped wires include a metal pipe (231), and a composite material pipe inner material (232), the composite material pipe inner material (232) is composed of a prepreg (10) ) solidified.
2. The metal-clad composite material profiled wire stranded reinforced core overhead conductor according to claim 1, wherein the metal tube (231) is made of any one of galvanized steel, stainless steel, aluminum or aluminum alloy kind.
3. The metal-clad composite material stranded reinforced core overhead conductor according to claim 1, characterized in that: the prepreg (10) is a resin-impregnated reinforcing fiber, and the reinforcing fiber is carbon fiber, glass fiber , ceramic fiber, basalt fiber, polyethylene fiber in any one or a mixture of fibers.
4. The metal-clad composite material profile wire stranded reinforced core overhead conductor according to claim 1, characterized in that: the aluminum profile wire (30) is a round or special-shaped hard aluminum wire, soft aluminum wire, aluminum alloy A mix of any one or more of the aluminium wires in the wire.
5. The metal-clad composite material stranded and reinforced core overhead conductor according to claim 3, wherein the resin is a thermosetting or thermoplastic resin.
6. A method for manufacturing a metal-clad composite material profile wire stranded and reinforced core overhead wire, which is characterized in that the following steps are included in sequence:

   S1, making the prepreg (10) and the tube blank;

   S2. Bring the prepreg (10) into the tube blank, and obtain a metal tube package prepreg wire (2) through a diameter reduction deformation operation;

   S3. Twisting, deforming and heating the metal tube-wrapped prepreg wire (2) to obtain the reinforcing core (23), wherein the prepreg (10) is cured into the composite tube inner material (232), the metal tube package prepreg wire (2) is formed into the profile;

   S4, twisting the aluminum profile wire (30) on the reinforcing core (23) to obtain the overhead wire.
7. The method for manufacturing a metal-clad composite material stranded reinforced core overhead conductor according to claim 6, characterized in that: in S1, the fiber tow (12) passes through the resin tank (13) and the yarn separation filter in sequence. A mold (11) for preparing the prepreg (10); the tube blank is formed by longitudinally wrapping a metal strip (14) through a longitudinally wrapping die (9) and a continuous welding machine (8), or is formed by longitudinal wrapping of a metal rod ( 141) Extrusion molding through the covering die (91) and the temperature control device (81).
8. The method for manufacturing a metal-clad composite material profiled wire stranded and reinforced core overhead conductor according to claim 6, characterized in that: in S2, the diameter-reducing deformation operation is performed by a clamping type pulling device (7), a wheel type A traction device (3) and a drawing die (6), or a rolling device (71), the wheeled traction device (3) and the drawing die (6), to prepare the metal tube package prepreg wire ( 2).
9. The method for manufacturing a metal-clad composite material type wire stranded and reinforced core overhead conductor according to claim 6, characterized in that: in S3, the metal tube-clad prepreg wire (2) is wound to obtain a coil The metal tube-wrapped prepreg wire (1), the coiled metal tube-wrapped prepreg wire (1) is driven by the pulling device (22) of the stranding machine, and first passes through the doubling and pressing die (20) to complete the process. The deformation and stranding operations of the metal tube-wrapped prepreg wire (2) are then passed through the heating device (21) to complete the curing operation of the prepreg (10), and finally the coil is reinforced on the winding reel Core (24).
10. The method for manufacturing a metal-clad composite material type wire stranded reinforced core overhead conductor according to claim 6, wherein in S4, a frame type stranding machine without untwisting is used, and the reinforced core (23 ) and twist the aluminum profile wire (30) to obtain the overhead wire.