CN217035263U - Device for improving conductivity of metal stranded wire - Google Patents
Device for improving conductivity of metal stranded wire Download PDFInfo
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- CN217035263U CN217035263U CN202220219458.6U CN202220219458U CN217035263U CN 217035263 U CN217035263 U CN 217035263U CN 202220219458 U CN202220219458 U CN 202220219458U CN 217035263 U CN217035263 U CN 217035263U
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Abstract
The utility model belongs to the field of conductive composite material preparation equipment, and particularly relates to a device for improving the conductivity of a metal stranded wire. The device comprises: the device comprises a sealed cavity and a process gas circuit mechanism used for introducing process gas into the sealed cavity, wherein a feeding mechanism and a receiving mechanism are arranged in the sealed cavity, and a heating mechanism and a wire twisting mechanism are sequentially arranged between the feeding mechanism and the receiving mechanism. According to the utility model, the production process is completed in the same sealed chamber, so that the adverse effects of interface oxidation and surface impurity introduction on the conductivity of the graphene metal composite stranded wire caused by air contact of the graphene metal composite wire in the processes of packaging, storage and transportation are avoided, and the conductivity of the graphene metal composite stranded wire is improved.
Description
Technical Field
The utility model belongs to the technical field of conductive composite material preparation equipment, and particularly relates to a device for improving the conductivity of a metal stranded wire.
Background
The wire and cable is a wire product which transmits electric (magnetic) energy, transmits information and realizes electromagnetic energy conversion. The wire and cable industry has a plurality of product types, and relates to various fields of national economy, such as electric power, building, communication, manufacturing and the like.
The metal material is one of the main raw materials in the wire and cable industry, and the quality of the metal material directly influences the development of the whole industry. At present, nonferrous metals such as copper, aluminum, tin, nickel and the like are generally adopted as leads in the wire and cable industry. Wherein the pure copper has a conductivity of 5.8 × 107S/m (at room temperature), second only to silver in metal (conductivity 6.3X 10 at room temperature)7S/m) and low cost, is the most widely used conductor material, and is commonly used for manufacturing wires.
In certain circumstances, such as overhead contact line conductors above high-speed rails, electrical energy is connected from the conductors to the train through the pantograph of the train body. When the speed per hour of the train reaches more than 300km/h, the friction action of the pantograph and the contact net lead can generate high temperature, and the special use environment requires that the lead has excellent conductivity, flexibility, hardness and strength. However, the strength of the copper wire is not good, and the conductivity is to be further improved.
In order to solve the above problems, people try to grow graphene on the surface of a copper wire to obtain a graphene-copper composite wire, and then twisting a plurality of graphene-copper composite wires into a graphene-copper composite stranded wire so as to further improve the strength and the conductivity of the copper wire.
However, when the graphene-copper composite stranded wire is prepared by using the conventional device, the conductivity of the graphene-copper composite stranded wire is poor.
SUMMERY OF THE UTILITY MODEL
In view of the above disadvantage that the conductivity of the graphene-copper composite stranded wire is poor when the graphene-copper composite stranded wire is produced by using the existing device, the utility model aims to provide a device for improving the conductivity of a metal stranded wire so as to further improve the conductivity of the graphene-copper composite stranded wire.
The inventor finds that, in the process of researching the graphene metal composite material, due to the limitation of equipment and production conditions, when the graphene copper composite wire is produced at the present stage, the graphene copper composite wire needs to be prepared in graphene growth equipment and then is subjected to subsequent processing. On the one hand, the existing graphene growth equipment mainly aims at foil metal substrates, and few metal lead preparation equipment is used, so that the foil equipment is used for preparing graphene on the foil substrates, and huge waste of equipment and energy is caused. In addition, in the packaging, storage and transportation processes of the graphene metal composite material, the surface of the metal substrate can be contacted with water vapor and oxygen in the air, so that the metal surface is oxidized, impurities are introduced to the surface of the graphene, in addition, wrinkles can be generated in the contact of the graphene metal composite wire and the transfer equipment in the transfer process, the uniformity of interface contact between the graphene and the metal wire is poor due to the factors, and the integral conductivity of the composite material is influenced. In addition, the procedures of packaging, storage, transportation, later stranding and the like are complicated, the labor and the time are wasted, the productivity is low, and unnecessary waste of energy and resources is caused.
In order to solve the problems, the utility model is realized by the following technical scheme:
the utility model aims to provide a device for improving the conductivity of a metal stranded wire, which comprises:
the device comprises a sealed cavity and a process gas path pipeline for introducing process gas into the sealed cavity;
the device comprises a sealed cavity, and is characterized in that a feeding mechanism and a receiving mechanism are arranged in the sealed cavity, a heating mechanism and a wire twisting mechanism are sequentially arranged between the feeding mechanism and the receiving mechanism, and the heating mechanism is used for heating the environment in the sealed cavity or the metal wire so as to crack a carbon source and grow graphene on the metal wire.
In the present invention, the term "poly" means a positive integer of 2 or more.
In the present invention, the term "metal wire" includes, but is not limited to: a copper wire or a nickel wire or an iron wire or an aluminum wire or a tin wire or a cobalt wire or a gold wire or a silver wire or an alloy wire formed of at least two metals of copper, nickel, iron, aluminum, tin, cobalt, platinum, gold and silver.
In the present invention, the term "process gas" includes, but is not limited to: hydrogen or an inert gas or a mixture of both.
In the present invention, the term "inert gas" includes nitrogen, helium, neon, argon and the like.
Optionally, the feeding mechanism comprises several feeding rollers.
Optionally, the device for improving the conductivity of the metal stranded wire further comprises a wire splitting mechanism for preventing the metal wires from being tangled with each other, and the wire splitting mechanism is arranged between the feeding mechanism and the stranding mechanism.
Optionally, the wire splitting mechanism includes a plurality of splitting plates, all the splitting plates are sequentially vertically arranged between the feeding mechanism and the stranding mechanism along the feeding direction of the metal wire, and a plurality of splitting holes are formed in a plate surface of each splitting plate.
Optionally, the wire splitting mechanism includes a plurality of splitting teeth for splitting, all the splitting teeth are sequentially and vertically arranged between the feeding mechanism and the stranding mechanism along the feeding direction of the metal wire, and the splitting teeth are arranged in parallel along the vertical direction.
Optionally, the device for improving the conductivity of the metal stranded wire further comprises a high-temperature pressing mechanism for pressing the graphene metal composite stranded wire, and the high-temperature pressing mechanism is arranged between the stranding mechanism and the receiving mechanism.
Optionally, the device for improving the conductivity of the metal strand further comprises a vacuum-pumping mechanism for reducing the pressure in the sealed chamber.
Optionally, the device for improving the conductivity of the metal strand further comprises a gaseous carbon source gas path mechanism for introducing a gaseous carbon source into the sealed chamber.
As described above, the device for improving the conductivity of the metal stranded wire provided by the utility model has the following beneficial effects:
(1) according to the utility model, the preparation process of the CVD graphene is combined with the metal stranded wire manufacturing process to obtain the graphene metal composite stranded wire, so that the conductivity of metal can be improved.
(2) After the multi-path metal wire is subjected to the growth process of the high-temperature graphene, the grain size of the polycrystalline metal wire can be further increased, the grain boundary is reduced, and the reduction of the grain boundary is beneficial to the improvement of the electric conduction and heat conduction performance of the wire.
(3) Accomplish graphite alkene growth process and transposition process in same sealed cavity, in process of production, graphite alkene metal composite conductor can not contact with the outside air, has avoided the oxidation that the contact air leads to in the transportation and impurity to introduce the adverse effect to the interface homogeneity between graphite alkene and the metal conductor, and then has improved composite stranded conductor electric conductivity.
(4) Accomplish graphite alkene growth and transposition process in same sealed cavity, need not to transport, graphite alkene metal composite conductor does not contact with the transshipment equipment, just also can not produce the fold to avoid the fold to the adverse effect of the interface homogeneity between graphite alkene and the metal conductor, further improved composite stranded conductor's electric conductive property.
(5) The wire splitting mechanism can avoid the twisting of the wires and is beneficial to the smooth production.
(6) The device has wide application range, can produce graphene metal composite stranded wire products, and can produce graphene metal composite strips according to the requirements of medium-sized, large-sized and even super-large-sized motors, transformers and the like on the full-slot rate of inserted wires.
(7) The production process is carried out in a roll-to-roll mode, repeated heating and cooling processes in the graphene growth process are avoided, meanwhile, the packaging, storage and transportation processes of the graphene metal composite wire are avoided, the process flow is shortened, therefore, the energy consumption and the cost are reduced, and the productivity and the efficiency are improved.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for improving conductivity of a metal strand according to example 1;
fig. 2 is a schematic structural diagram of an apparatus for improving conductivity of a metal strand according to embodiment 2.
Reference numerals
The device comprises a sealed chamber 1, a feeding roller 2, a metal wire 3, a process gas circuit mechanism 4, a beam splitting plate 5, a heating mechanism 6, a vacuumizing mechanism 7, a stranding mechanism 8, a winding machine 9, a flow valve 10, an air release valve 11, a line pressing mechanism 12, a gaseous carbon source gas circuit mechanism 13 and beam splitting teeth 14.
Detailed Description
The present invention will be further described with reference to specific embodiments, and embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only used as examples, and the protection scope of the present invention is not limited thereby.
The utility model provides a device for improving the conductivity of a metal stranded wire, which comprises:
the device comprises a sealed cavity, a process gas path mechanism for introducing process gas into the sealed cavity and a vacuumizing mechanism for reducing the pressure in the sealed cavity;
be provided with in the sealed cavity and throw material mechanism and receiving agencies, throw material mechanism and include a plurality of material rollers of throwing, throw and set gradually heating mechanism and stranding mechanism between material mechanism and the receiving agencies, stranding mechanism and throw and still be provided with between the material mechanism and be used for preventing the mutual tangled wire beam splitting mechanism of metal substrate, heating mechanism is used for heating sealed cavity internal environment or wire to make the carbon source schizolysis and grow graphite alkene on wire.
In an embodiment of the present invention, the wire splitting mechanism includes a plurality of splitting plates, all the splitting plates are sequentially vertically disposed between the feeding mechanism and the stranding mechanism along a feeding direction of the metal wire, and a plurality of splitting holes are disposed on a plate surface of the splitting plate.
In another embodiment of the utility model, the wire splitting mechanism comprises a plurality of splitting teeth, all the splitting teeth are sequentially and vertically arranged between the feeding mechanism and the stranding mechanism along the feeding direction of the metal wire, and the splitting teeth are arranged in parallel along the vertical direction.
In another embodiment of the utility model, the device for improving the conductivity of the metal stranded wire further comprises a high-temperature pressing mechanism for pressing the graphene metal composite stranded wire, and the high-temperature pressing mechanism is arranged between the wire twisting mechanism and the material receiving mechanism.
In another embodiment of the present invention, the apparatus for improving the conductivity of the metal strand further comprises a gaseous carbon source gas path mechanism for introducing a gaseous carbon source into the sealed chamber.
Example 1
The device for improving the conductivity of the metal stranded wire shown in fig. 1 comprises:
the device comprises a sealed chamber 1, a process gas path mechanism 4 for introducing process gas into the sealed chamber and a vacuumizing mechanism 7 for reducing the pressure in the sealed chamber 1;
a feeding mechanism, a lead splitting mechanism, a stranding mechanism 8 and a receiving mechanism are sequentially arranged in the sealed chamber 1;
the feeding mechanism comprises a plurality of feeding rollers 2, and all the feeding rollers 2 are arranged in parallel or staggered in the vertical direction;
the wire splitting mechanism comprises a plurality of splitting plates 5, all the splitting plates 5 are sequentially and vertically arranged between the feeding mechanism and the stranding mechanism 8 along the feeding direction of the metal wires, a plurality of splitting holes are formed in the plate surfaces of the splitting plates 5, different metal wires respectively penetrate through different splitting holes in the plate surface of the same splitting plate 5 to enter the stranding mechanism 8, and the metal wires can be prevented from being intertwined with each other through the arrangement;
the stranding mechanism 8 is used for stranding a plurality of strands of single graphene metal-based composite wires into one strand, and specifically adopts a stranding machine;
the material receiving mechanism specifically adopts a winding machine 9, and the winding machine 9 is used for receiving the graphene metal composite stranded wire stranded into one strand into a coil;
a heating mechanism 6 is further arranged between the feeding mechanism and the wire twisting mechanism 8, the heating mechanism 6 adopts a heater, and the heater is used for heating the internal environment of the sealed chamber 1 or the metal wire 3 so as to crack a carbon source under the catalysis of the metal wire 3 at high temperature, and then graphene grows on the surface of the metal wire 3; the heater can specifically adopt an electromagnetic heater, a resistance wire heating sleeve or an infrared heating pipe, the heating mechanism 6 comprises a heating assembly, a temperature sensor and a temperature controller, the heating assembly is used for heating the internal environment of the sealed cavity 1 or the metal wire 3, the temperature sensor is used for monitoring the temperature of the internal environment of the sealed cavity or the metal wire, and the temperature controller receives data of the temperature sensor and controls the heating assembly to be turned on or turned off according to the data of the temperature sensor. Detecting signals by using a sensor and transmitting related signals to a controller, wherein the controller controls an execution element to execute actions according to the received signals is the prior art, and details are not repeated herein;
the process gas path mechanism 4 is communicated with one end of the sealed chamber 1; the process gas path mechanism 4 is provided with a process gas storage container and a process gas outlet pipeline communicated with the process gas storage container, the process gas outlet pipeline is provided with a switch valve (not shown) and a one-way valve (not shown), and the one-way valve can control the one-way flow of the process gas from inside to outside so as to prevent the gas from flowing backwards into the process gas storage container. The process gas routing mechanism 4 is prior art and is not relevant to the point of improvement and will not be described herein. A flow valve 10 is arranged on a pipeline connecting the sealing chamber 1 and the process gas circuit mechanism 4, and the flow valve 10 can control the flow of the process gas (hydrogen, inert gas or a mixture of the hydrogen and inert gases) discharged from the process gas storage container.
The vacuum pumping mechanism 7 comprises a vacuum pump and a pipeline communicated with the vacuum pump, a switch valve (not shown) and a vacuum gauge (not shown) are arranged on the pipeline, the vacuum pumping mechanism 7 is the prior art and is irrelevant to improvement points, and the details are not repeated here. The vacuumizing mechanism 7 can quickly pump the pressure in the sealed cavity 1 to a low vacuum state, and pumps oxygen and impurities in the sealed cavity 1 out of the sealed cavity 1, so that the sealed cavity 1 is in a clean state, and the influence of the oxygen or the impurities in the process is avoided.
The working process of the device of the embodiment is as follows:
the vacuumizing mechanism 7 is used for vacuumizing the environment in the sealed chamber 1 to a low vacuum degree state (such as less than 0.1Pa), then the vacuumizing mechanism is closed, and in the vacuumizing process, the vacuumizing mechanism 7 is used for vacuumizing the gas in the sealed chamber 1 and discharging the gas to the atmosphere, so that the environment in the sealed chamber 1 is in an oxygen-free state; introducing process gas (such as hydrogen, inert gas or a mixture of hydrogen and inert gas) into the sealed chamber 1 through a process gas path mechanism 4;
coating a solution of a solid carbon source (such as one or more of polymethyl methacrylate, polydimethylsiloxane, polystyrene and polycyclic aromatic hydrocarbon compounds) (a solvent adopted by the solution is one or more of ethanol, acetone, ethyl lactate, ethyl acetate, xylene, toluene, tetrahydrofuran, chloroform, dimethylformamide and dichloroethane) on the surfaces of a plurality of single metal leads in a soaking mode, and rolling into a metal lead roll;
then, feeding a plurality of metal wire coils coated with solid carbon sources on the surfaces through feeding rollers 2 respectively, wherein under the drawing action of a winding mechanism 9, all single metal wires at the feeding rollers 2 pass through different beam splitting holes on the surface of the same beam splitting plate 5 respectively and enter a stranding mechanism 8, and the stranding mechanism 8 twists a plurality of metal wires into one strand; and then the graphene metal composite stranded wire is obtained by being stored into a coil by a winding machine 9.
In the process that the metal wire is pulled to the coiling machine 9, the heating mechanism 6 arranged on the feeding path of the metal wire 3 heats the metal wire, the solid carbon source is cracked under the catalysis of high temperature, process gas and the metal wire 3, and graphene grows on the surface of the metal wire 3 to obtain the graphene metal composite wire. After the graphene metal composite wires enter the stranding mechanism 8, the stranding mechanism 8 strands a plurality of graphene metal composite wires into one strand, and then the strand is stored into a roll by the winding machine 9.
The graphene metal composite stranded wire prepared by the embodiment has excellent conductivity. Graphene growth, transposition and rolling are carried out in same sealed cavity, and in process of production, graphite alkene metal composite conductor can not contact with the outside air, has avoided interface oxidation and the surface impurity that leads to of contact air to introduce the adverse effect to the interface homogeneity between graphite alkene and the metal conductor in the transportation, and then has improved composite stranded wire's electric conductivity.
Secondly, in the production process, need not to transport, graphite alkene metal composite conductor does not contact with the transfer apparatus, just also can not produce the fold to avoid the fold to the adverse effect of the interface homogeneity between graphite alkene and the metal conductor, further improved the electric conductive property of composite stranded conductor.
In addition, after the multi-path metal wire is subjected to a high-temperature graphene growth process, the grain size of the polycrystalline metal wire can be further increased, the grain boundary is reduced, and the reduction of the grain boundary is beneficial to the improvement of the electric conduction and heat conduction performance of the wire.
Example 2
The present embodiment is different from embodiment 1 in that: the other end of the sealed chamber 1 is provided with an air release valve 11, and the air higher than the atmospheric pressure in the sealed chamber 1 can be discharged out of the sealed chamber 1 through the air release valve 11; one end of the sealed chamber 1 communicated with the process gas circuit mechanism 4 is also communicated with a gaseous carbon source gas circuit mechanism 13 used for introducing a gaseous carbon source into the sealed chamber 1, the gaseous carbon source gas circuit mechanism 13 is provided with a gaseous carbon source storage container and a gaseous carbon source gas outlet pipeline communicated with the gaseous carbon source storage container, the gaseous carbon source gas outlet pipeline is provided with a switch valve (not shown) and a one-way valve (not shown), and the one-way valve can control the one-way flow of the gaseous carbon source from inside to outside to avoid the gas from flowing backwards into the gaseous carbon source storage container. A flow valve 10 is arranged on a pipeline connecting the sealed chamber 1 and the gaseous carbon source gas circuit mechanism 13, and the flow valve 10 can control the flow of the gaseous carbon source (such as one or more of methane, ethylene, acetylene, carbon monoxide and carbon dioxide) discharged from the gaseous carbon source storage container. The gaseous carbon source gas path mechanism 13 is the prior art, and is irrelevant to the improvement point, and is not described herein again;
the wire splitting mechanism comprises a plurality of splitting teeth 14, all the splitting teeth 14 are sequentially and vertically arranged between the feeding mechanism and the stranding mechanism 8 along the feeding direction of the metal wires, the splitting teeth 14 are arranged in parallel along the vertical direction, different metal wires respectively penetrate through different grooves formed by the splitting teeth to enter the stranding mechanism 8, and mutual entanglement of the metal wires is avoided through the arrangement;
still including the high temperature pressing mechanism 10 that is used for suppressing compound stranded conductor of graphite alkene metal, high temperature pressing mechanism 10 sets up between stranding mechanism 8 and receiving agencies, and high temperature pressing mechanism 10 adopts the roll squeezer.
The vacuumizing mechanism 7 is closed after the sealed chamber 1 is vacuumized to a low vacuum degree, the process gas is introduced into the sealed chamber 1 through the process gas path mechanism 4 until the pressure in the sealed chamber 1 is at the normal pressure, the process gas is continuously introduced, the gas release valve 11 is opened, and the gas higher than the atmospheric pressure in the sealed chamber 1 is discharged out of the sealed chamber 1 through the gas release valve 11, so that the gas entering and discharged out of the sealed chamber 1 reaches a dynamic balance state to meet the process requirements under the strong normal pressure condition.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. An apparatus for improving conductivity of a metal strand, comprising:
the device comprises a sealed cavity and a process gas path mechanism for introducing process gas into the sealed cavity;
the device comprises a sealed cavity, and is characterized in that a feeding mechanism and a receiving mechanism are arranged in the sealed cavity, a heating mechanism and a wire twisting mechanism are sequentially arranged between the feeding mechanism and the receiving mechanism, and the heating mechanism is used for heating the environment in the sealed cavity or a metal wire so as to crack a carbon source and grow graphene on the metal wire.
2. The apparatus of claim 1, wherein the feeding mechanism comprises a plurality of feeding rollers.
3. The apparatus for improving the conductivity of a metal strand as claimed in claim 1, further comprising a wire splitting mechanism for preventing the metal wires from being tangled with each other, the wire splitting mechanism being disposed between the feeding mechanism and the stranding mechanism.
4. The device for improving the conductivity of the metal stranded wire according to claim 3, wherein the wire splitting mechanism comprises a plurality of splitting plates, all the splitting plates are vertically arranged between the feeding mechanism and the stranding mechanism in sequence along the feeding direction of the metal wire, and a plurality of splitting holes are formed in the plate surface of each splitting plate.
5. The device for improving the conductivity of the metal stranded wire according to claim 3, wherein the wire splitting mechanism comprises a plurality of splitting teeth, all the splitting teeth are vertically arranged between the feeding mechanism and the stranding mechanism in sequence along the feeding direction of the metal wire, and the splitting teeth are arranged in parallel along the vertical direction.
6. The device for improving the conductivity of the metal stranded wire according to claim 1, further comprising a high-temperature pressing mechanism for pressing the graphene metal composite stranded wire, wherein the high-temperature pressing mechanism is arranged between the wire twisting mechanism and the material receiving mechanism.
7. The apparatus for increasing the conductivity of a metal strand as in claim 1, further comprising a vacuum mechanism for reducing the pressure within said sealed chamber.
8. The apparatus for improving conductivity of a metal strand as claimed in claim 1, further comprising a gaseous carbon source gas path mechanism for introducing a gaseous carbon source into the sealed chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220219458.6U CN217035263U (en) | 2022-01-26 | 2022-01-26 | Device for improving conductivity of metal stranded wire |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220219458.6U CN217035263U (en) | 2022-01-26 | 2022-01-26 | Device for improving conductivity of metal stranded wire |
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| Publication Number | Publication Date |
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| CN217035263U true CN217035263U (en) | 2022-07-22 |
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| CN202220219458.6U Active CN217035263U (en) | 2022-01-26 | 2022-01-26 | Device for improving conductivity of metal stranded wire |
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