CN114898937A - Composite multi-core cable and preparation method thereof - Google Patents
Composite multi-core cable and preparation method thereof Download PDFInfo
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- CN114898937A CN114898937A CN202210686846.XA CN202210686846A CN114898937A CN 114898937 A CN114898937 A CN 114898937A CN 202210686846 A CN202210686846 A CN 202210686846A CN 114898937 A CN114898937 A CN 114898937A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims description 44
- 238000005491 wire drawing Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
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- 239000000843 powder Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 239000002042 Silver nanowire Substances 0.000 claims description 5
- 125000002723 alicyclic group Chemical group 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 229920003180 amino resin Polymers 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- 239000001913 cellulose Substances 0.000 claims description 5
- 229920002678 cellulose Polymers 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
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- 229910052751 metal Inorganic materials 0.000 claims description 5
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- 238000010030 laminating Methods 0.000 claims 1
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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
- H01B7/30—Insulated conductors or cables characterised by their form with arrangements for reducing conductor losses when carrying alternating current, e.g. due to skin effect
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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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
- H01B7/0009—Details relating to the conductive cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/40—Insulated conductors or cables characterised by their form with arrangements for facilitating mounting or securing
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- 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
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
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Abstract
The invention discloses a composite multi-core cable and a preparation method thereof, belonging to the technical field of multi-core cables, wherein the composite multi-core cable comprises a cable wire and a cable interface, the cable interface is arranged at an end point of the cable, the cable wire comprises a main wrapping pipe and a main wire, the main wire comprises seven main wires, insulating rubber is filled between the seven main wires, the outer sides of the seven main wires are wrapped with an anti-interference layer, the main wrapping pipe is fixedly wrapped at the outer side of the anti-interference layer, the main wire comprises a branch wire and an auxiliary wrapping pipe, the branch wire comprises seven branch wires, the outer side of each branch wire is wrapped with a shielding film, the auxiliary wrapping pipe is wrapped at the outer sides of the seven branch wires, the outer sides of the cross sections of the branch wires are provided with six arc petals, relative to multi-core cables on the market, the cross section of the cable branch wire of the invention has six arc petals, compared with round cross-section conductors with the same specification, the consumable material is lower, and the invention has the advantages of lower material consumption, The resistance is smaller, the passing current is larger, and the transmission efficiency is higher.
Description
Technical Field
The invention relates to the technical field of multi-core cables, in particular to a composite multi-core cable and a preparation method thereof.
Background
A multi-core cable refers to a cable with more than one insulated wire core. The cable plays an important role in electronic products and electronic systems, is a key link for connecting various functions of the electronic products, and is widely applied to the fields of aerospace, maritime warships and the like.
The cable plays an important role in electronic products and electronic systems, is a key link for connecting various functions of the electronic products, is widely applied to the fields of space flight and aviation, maritime warships and the like, exists in various different environments, the stable performance of the cable becomes the most important consideration for manufacturing and welding the cable, which is mainly because the imperfect manufacturing process or poor contact and poor welding quality in the welding process can greatly affect the whole electronic system, the manufacture and welding quality of the cable do not reach the standard, and the operation safety of the whole system can be threatened, therefore, the manufacturing and welding processes are strictly carried out according to requirements, so that the performance stability of the cable is ensured, the realization of system functions is promoted, the manufacturing process of the multi-core cable and matters needing attention are mainly analyzed, and effective solutions are provided.
When alternating current or alternating electromagnetic field exists in the conductor, the current distribution in the conductor is uneven, the current is concentrated on the skin part of the conductor, namely the current is concentrated on the thin layer on the outer surface of the conductor, the closer to the surface of the conductor, the higher the current density is, and the smaller the current is actually in the conductor. As a result, the resistance of the conductor increases, and its power loss also increases. This phenomenon is called skin effect. When the single-core cable is subjected to alternating current or alternating electromagnetic field, the skin effect is obvious, and the line loss is increased.
The cross section of a conductor part of the existing multi-core cable is circular, and the multi-core cable has smaller resistance and higher transmission efficiency compared with a single-core cable, but the resistance still exists, the electric energy loss in long-distance transmission still does not change a lot, and the butt joint between the cable and the cable is not efficient enough.
Disclosure of Invention
In order to solve the technical problems, the invention provides a composite multi-core cable and a preparation method thereof.
The technical scheme of the invention is as follows: a composite multi-core cable comprises a cable body and a cable interface, wherein the cable interface is arranged at an end point of the cable, the cable body comprises a main wrapping pipe and main lines, the main lines are provided with seven main lines, insulating rubber is filled between the seven main lines, anti-interference layers wrap the outer sides of the seven main lines, the main wrapping pipe is fixedly wrapped on the outer sides of the anti-interference layers, each main line comprises a branch line and an auxiliary wrapping pipe, the branch lines are provided with seven branch lines, the outer sides of all the branch lines are wrapped with shielding films, the auxiliary wrapping pipes wrap the outer sides of the seven branch lines, and the outer sides of the cross sections of the branch lines are provided with six arc-shaped petals;
the cable connector comprises a connecting ring, a first clamping ring, a second clamping ring and a third clamping ring, wherein seven groups of connecting holes are arranged in the connecting ring, each group of connecting holes is provided with seven small holes, a connecting buckle is connected in each small hole in a clamping manner, two ends of the connecting buckle are provided with winding columns for winding branch lines, two threading holes are formed in the middle of the connecting buckle, rubber rings are arranged on the inner sides of the first clamping ring and the second clamping ring, barbs are arranged on the inner side walls of the outer sides of the first clamping ring and the second clamping ring, and the outer side walls of the inner sides of the first clamping ring and the second clamping ring are connected with the third clamping ring through threads.
Further, the preparation method of the composite multi-core cable comprises the following steps:
s1, branch groove drawing:
the circular section of the electric wire is changed into a hexapetaloid section through a groove broacher, and the wire drawing speed of the groove broacher is 55 m/min; obtaining a branch line;
s2, preparing a main line:
winding a shielding film on the outer sides of the branch lines obtained in the step S1, gathering seven branch lines into compound lines, coating talcum powder on the outer sides of the compound lines, guiding the compound lines into secondary wrapping pipes, and heating the outer sides of the compound lines to shrink the secondary wrapping pipes to obtain main lines;
s3, preparing a multi-core cable:
the method comprises the following steps that seven main lines penetrate through a positioning device and then are straightened to enter a rubber extruder, rubber materials are filled between the main lines to form cables, the cables are guided to a water tank to be cooled, the cooled cables are dried, an anti-interference layer wraps the outer sides of the dried cables, talcum powder is smeared on the outer sides of the cables wrapped with the interference layer and then guided into the rubber extruder, the rubber wraps the outer sides of the anti-interference layers to form a main wrapping pipe, and the cables are cooled to obtain the multi-core cable;
s4, processing a cable interface:
machining the cylindrical material into a connecting ring, a first clamping ring, a second clamping ring and a third clamping ring, wherein the thread depth of the outer walls of the first clamping ring and the second clamping ring is changed from inside to outside, the thread directions of the first clamping ring and the second clamping ring are opposite, rubber rings are bonded on the inner sides of the first clamping ring and the second clamping ring, the thread directions of the two sides of the inner wall of the third clamping ring are opposite, and finally, a cable interface is installed to the end point of the multi-core cable obtained in the step S3 to obtain the composite multi-core cable.
Further, the slot-broaching machine includes wire drawing wheel, actinobacillus wheel, wire drawing groove, base, the wire drawing wheel with the actinobacillus wheel rotates respectively to be connected the both sides of base, the rear end transmission of wire drawing wheel is connected with the stay wire motor, the bottom and the base fixed connection of stay wire motor, wire drawing groove fixed connection forms the arc lamella at the base middle part through the wire drawing groove, strengthens the skin effect of conductor, reduces the resistance of conductor, can high-efficient transmission electric energy.
Furthermore, the positioning device comprises a positioning seat and a positioning ring, the positioning ring is fixedly connected above the positioning seat, seven positioning holes are formed in the positioning ring, and the distance between the main lines is fixed through the positioning device, so that the main lines are prevented from contacting with each other.
Further, the shielding film is prepared by mixing carbon fibers, silver nanowires and cellulose according to a mass ratio of 1: 5: 2, self-assembling and stacking to form a film under the orientation conditions of vacuum and magnetic field, and then plating a metal layer on the film by brush plating and composite electrodeposition to finally obtain a shielding film which can effectively shield the electromagnetic interference between branch lines.
Further, the anti-interference layer is made of the following components in parts by weight: 45-50 parts of wave-absorbing powder, 15-20 parts of alicyclic epoxy resin, 7-9 parts of etherified amino resin, 5-10 parts of fly ash hollow microspheres, 8-12 parts of ethanol, 0.1-0.5 part of dispersing agent and 3-5 parts of alumina micro powder, and can effectively resist the interference of an external electromagnetic field on the cable.
Further, the heating temperature of the secondary wrapping pipe in the step S2 is 90-100 ℃, and the secondary wrapping pipe has good contractibility in the temperature range.
Further, in the step S3, the water cooling temperature of the water pool is 5-10 degrees, the cooling time is 1-2min, the cooling speed is high, and the cooling efficiency is high.
Furthermore, the cooling mode of the main wrapping pipe on the outer side of the cable is air cooling, the air cooling temperature is 3-5 ℃, and natural cooling is carried out after the air cooling is carried out until the temperature of the main wrapping pipe is less than or equal to 50 ℃.
Furthermore, the extrusion speed of the rubber extruder is 4-6m/min, and under the extrusion speed, the extruded material is uniform and is well formed after extrusion.
The invention has the beneficial effects that:
(1) compared with the multi-core cable on the market, the cable branch section of the invention has six arc-shaped petals, and compared with a circular section conductor with the same specification, the cable branch section of the invention has the advantages of lower material consumption, smaller resistance, larger passing current and higher transmission efficiency.
(2) The composite multi-core cable is easier to butt joint through the cable interface, compared with the interface device on the market, the cable interface has smaller resistance, the electromagnetic interference between the branch lines of the cable is lower, and the external electromagnetic interference resistance of the cable is stronger.
Drawings
Fig. 1 is a cross-sectional view of a cable of the present invention.
Figure 2 is a cross-sectional view of the main line of the invention.
Fig. 3 is a schematic structural diagram of the cable interface of the present invention.
Figure 4 is a cross-sectional view of the attachment ring of the present invention.
Figure 5 is a schematic view of the connection of the connector link of the present invention to the connector ring.
Fig. 6 is a schematic structural view of the slot-producing machine of the present invention.
Fig. 7 is a perspective view of the trunking of the present invention.
Fig. 8 is a schematic structural diagram of the positioning device of the present invention.
The cable comprises a 1-cable wire, a 2-cable connector, an 11-main wrapping pipe, a 12-shielding film, a 13-main wire, a 14-anti-interference layer, 131-insulating rubber, a 132-branch wire, a 133-auxiliary wrapping pipe, a 134-arc-shaped petal, a 21-connecting ring, a 22-clamping ring I, a 23-clamping ring II, a 24-clamping ring III, a 25-connecting hole, a 251 small hole, a 26-connecting buckle, a 261-threading hole, a 27-rubber ring, a 28-barb, a 29-winding column, a 31-wire pulling wheel, a 32-wire releasing wheel, a 33-wire pulling groove, a 34-base, a 35-wire pulling motor, a 41-positioning seat, a 42-positioning ring and a 43-positioning hole.
Detailed Description
Example 1:
as shown in fig. 1-2, a composite multi-core cable includes a cable line 1 and a cable interface 2, the cable interface 2 is arranged at an end point of the cable, the cable line 1 includes a main wrapping pipe 11 and a main line 13, the main line 13 has seven main lines 13, an insulating rubber 131 is filled between the seven main lines 13, an anti-interference layer 14 is wrapped on the outer side of the seven main lines 13, the main wrapping pipe 11 is fixedly wrapped on the outer side of the anti-interference layer 14, the main line 13 includes a branch line 132 and an auxiliary wrapping pipe 133, the branch line 132 has seven branch lines, the outer side of each branch line 132 is wrapped with a shielding film 12, the auxiliary wrapping pipe 133 is wrapped on the outer side of the seven branch lines 132, and the outer side of the cross section of the branch line 132 is provided with six arc-shaped petals 134;
as shown in fig. 3-5, the cable interface 2 includes a connection ring 21, a first clamping ring 22, a second clamping ring 23, and a third clamping ring 24, seven groups of connection holes 25 are provided in the connection ring 21, each group of connection holes 25 has seven small holes 251, a connection buckle 26 is clamped in the small holes 251, two ends of the connection buckle 26 are provided with winding posts 29 for winding the branch wires 132, two threading holes 261 are provided in the middle of the connection buckle 26, rubber rings 27 are provided on inner sides of the first clamping ring 22 and the second clamping ring 23, barbs 28 are provided on outer side inner walls of the first clamping ring 22 and the second clamping ring 23, and the inner side outer walls of the first clamping ring 22 and the second clamping ring 23 are connected with the third clamping ring 24 through threads.
Example 2
The embodiment describes a preparation method of a composite multi-core cable, which comprises the following steps:
s1, branch line 132 groove drawing:
the round section of the electric wire is changed into a hexapetaloid section through a groove broacher, and the wire drawing speed of the groove broacher is 50 m/min; a branch line 132 is obtained;
s2, preparing a main line 13:
winding the shielding film 12 on the outer sides of the branch lines 132 obtained in step S1, gathering the seven branch lines 132 into strand lines, coating talc powder on the outer sides of the strand lines, guiding the strand lines into the secondary wrapping tubes 133, and heating the outer sides of the strand lines to shrink the secondary wrapping tubes 133 to obtain the main lines 13;
s3, preparing a multi-core cable:
the method comprises the following steps that seven main lines 13 penetrate through a positioning device and then are straightened to enter a rubber extruder, rubber materials are filled in the main lines 13 to form cables, the cables are guided to a water pool to be cooled, the cooled cables are dried, the outer sides of the dried cables are wrapped with anti-interference layers 14, talcum powder is coated on the outer sides of the cables wrapped with the interference layers, the cables are guided into the rubber extruder, the rubber is wrapped on the outer sides of the anti-interference layers 14 to form main wrapping pipes 11, and the cables are cooled to obtain the multi-core cable;
s4, processing a cable interface:
machining the cylindrical material into a connecting ring 21, a first clamping ring 22, a second clamping ring 23 and a third clamping ring 24, wherein the thread depth of the outer wall of the first clamping ring 22 and the outer wall of the second clamping ring 23 is changed from inside to outside, the thread directions of the first clamping ring 22 and the second clamping ring 23 are opposite, rubber rings are bonded on the inner sides of the first clamping ring 22 and the second clamping ring 23, the thread directions of the two sides of the inner wall of the third clamping ring 24 are opposite, and finally, the cable interface 2 is installed to the end point of the multi-core cable obtained in the step S3, so that the composite multi-core cable is obtained.
As shown in fig. 6-7, the slot-broaching machine includes a wire-pulling wheel 31, a wire-releasing wheel 32, a wire-pulling groove 33, and a base 34, wherein the wire-pulling wheel 31 and the wire-releasing wheel 32 are respectively rotatably connected to two sides of the base 34, the rear end of the wire-pulling wheel 31 is in transmission connection with a wire-pulling motor 35, the bottom of the wire-pulling motor 35 is fixedly connected to the base 34, the wire-pulling groove 33 is fixedly connected to the middle of the base 34, an arc-shaped lobe 134 is formed through the wire-pulling groove 33, the skin effect of the conductor is enhanced, the resistance of the conductor is reduced, and the electric energy can be efficiently transmitted.
As shown in fig. 8, the positioning device includes a positioning seat 41 and a positioning ring 42, the positioning ring 42 is fixedly connected above the positioning seat 41, seven positioning holes 43 are provided in the positioning ring 42, and the distance between the main lines 13 is fixed by the positioning device, so as to avoid contact between the main lines 13.
The shielding film 12 is prepared by mixing carbon fibers, silver nanowires and cellulose according to a mass ratio of 1: 5: 2, self-assembling and stacking to form a film under the orientation conditions of vacuum and magnetic field, and then plating a metal layer on the film by brush plating and composite electrodeposition to finally obtain the shielding film 12 which can effectively shield the electromagnetic interference among the branch lines 132.
The anti-interference layer 14 is made of the following components in parts by weight: 45 parts of wave-absorbing powder, 15 parts of alicyclic epoxy resin, 7 parts of etherified amino resin, 5 parts of fly ash cenospheres, 8 parts of ethanol, 0.1 part of dispersing agent and 3 parts of alumina micro powder, and can effectively resist the interference of an external electromagnetic field on the cable.
In step S2, the heating temperature of the secondary wrapping tube 133 is 90 ℃, and the secondary wrapping tube 133 has good shrinkage in this temperature range.
In step S3, the water cooling temperature of the water tank is 5 degrees, the cooling time is 1min, the cooling speed is fast, and the cooling efficiency is high.
The cooling mode of the main wrapping pipe 11 on the outer side of the cable is air cooling, the air cooling temperature is 3 ℃, and the air cooling is carried out until the temperature of the main wrapping pipe 11 is 50 ℃ and then natural cooling is carried out.
The extrusion speed of the rubber extruder is 4m/min, and the extruded material is uniform at the extrusion speed, and the molding is good after extrusion.
Example 3:
the embodiment describes a preparation method of a composite multi-core cable, which comprises the following steps:
s1, branch line 132 groove drawing:
changing the circular section of the electric wire into a hexapetaloid section by a groove broacher, wherein the wire drawing speed of the groove broacher is 50-60 m/min; a branch line 132 is obtained;
s2, preparing a main line 13:
winding the shielding film 12 on the outer sides of the branch lines 132 obtained in step S1, gathering the seven branch lines 132 into strand lines, coating talc powder on the outer sides of the strand lines, guiding the strand lines into the secondary wrapping tubes 133, and heating the outer sides of the strand lines to shrink the secondary wrapping tubes 133 to obtain the main lines 13;
s3, preparing a multi-core cable:
the method comprises the following steps that seven main lines 13 penetrate through a positioning device and then are straightened to enter a rubber extruder, rubber materials are filled in the main lines 13 to form cables, the cables are guided to a water pool to be cooled, the cooled cables are dried, the outer sides of the dried cables are wrapped with anti-interference layers 14, talcum powder is coated on the outer sides of the cables wrapped with the interference layers, the cables are guided into the rubber extruder, the rubber is wrapped on the outer sides of the anti-interference layers 14 to form main wrapping pipes 11, and the cables are cooled to obtain the multi-core cable;
s4, processing a cable interface:
machining the cylindrical material into a connecting ring 21, a first clamping ring 22, a second clamping ring 23 and a third clamping ring 24, wherein the thread depth of the outer wall of the first clamping ring 22 and the outer wall of the second clamping ring 23 is changed from inside to outside, the thread directions of the first clamping ring 22 and the second clamping ring 23 are opposite, rubber rings are bonded on the inner sides of the first clamping ring 22 and the second clamping ring 23, the thread directions of the two sides of the inner wall of the third clamping ring 24 are opposite, and finally, the cable interface 2 is installed to the end point of the multi-core cable obtained in the step S3, so that the composite multi-core cable is obtained.
As shown in fig. 6-7, the slot-broaching machine includes a wire-pulling wheel 31, a wire-releasing wheel 32, a wire-pulling groove 33, and a base 34, wherein the wire-pulling wheel 31 and the wire-releasing wheel 32 are respectively rotatably connected to two sides of the base 34, the rear end of the wire-pulling wheel 31 is in transmission connection with a wire-pulling motor 35, the bottom of the wire-pulling motor 35 is fixedly connected to the base 34, the wire-pulling groove 33 is fixedly connected to the middle of the base 34, an arc-shaped lobe 134 is formed through the wire-pulling groove 33, the skin effect of the conductor is enhanced, the resistance of the conductor is reduced, and the electric energy can be efficiently transmitted.
As shown in fig. 8, the positioning device includes a positioning seat 41 and a positioning ring 42, the positioning ring 42 is fixedly connected above the positioning seat 41, seven positioning holes 43 are provided in the positioning ring 42, and the distance between the main lines 13 is fixed by the positioning device, so as to avoid contact between the main lines 13.
The shielding film 12 is prepared by mixing carbon fibers, silver nanowires and cellulose according to a mass ratio of 1: 5: 2, self-assembling and stacking to form a film under the orientation conditions of vacuum and magnetic field, and then plating a metal layer on the film by brush plating and composite electrodeposition to finally obtain the shielding film 12 which can effectively shield the electromagnetic interference among the branch lines 132.
The anti-interference layer 14 is made of the following components in parts by weight: 48 parts of wave absorbing powder, 18 parts of alicyclic epoxy resin, 8 parts of etherified amino resin, 7 parts of fly ash cenospheres, 10 parts of ethanol, 0.3 part of dispersing agent and 4 parts of alumina micro powder, and can effectively resist the interference of an external electromagnetic field to the cable.
In step S2, the heating temperature of the secondary wrapping tube 133 is 95 ℃, and the secondary wrapping tube 133 has good shrinkage in this temperature range.
In step S3, the water cooling temperature of the water tank is 8 degrees, the cooling time is 1.5min, the cooling speed is high, and the cooling efficiency is high.
The cooling mode of the main wrapping pipe 11 on the outer side of the cable is air cooling, the air cooling temperature is 4 ℃, the air cooling is carried out to 40 ℃ of the main wrapping pipe 11, and then natural cooling is carried out.
The extrusion speed of the rubber extruder is 5m/min, and at the extrusion speed, the extruded material is uniform and is well formed after extrusion.
Example 4:
the embodiment describes a preparation method of a composite multi-core cable, which comprises the following steps:
s1, branch line 132 groove drawing:
changing the circular section of the electric wire into a hexapetaloid section by a groove broacher, wherein the wire drawing speed of the groove broacher is 50-60 m/min; a branch line 132 is obtained;
s2, preparing a main line 13:
winding the shielding film 12 on the outer sides of the branch lines 132 obtained in step S1, gathering the seven branch lines 132 into strand lines, coating talc powder on the outer sides of the strand lines, guiding the strand lines into the secondary wrapping tubes 133, and heating the outer sides of the strand lines to shrink the secondary wrapping tubes 133 to obtain the main lines 13;
s3, preparing a multi-core cable:
the method comprises the following steps that seven main lines 13 penetrate through a positioning device and then are straightened to enter a rubber extruder, rubber materials are filled in the main lines 13 to form cables, the cables are guided to a water pool to be cooled, the cooled cables are dried, the outer sides of the dried cables are wrapped with anti-interference layers 14, talcum powder is coated on the outer sides of the cables wrapped with the interference layers, the cables are guided into the rubber extruder, the rubber is wrapped on the outer sides of the anti-interference layers 14 to form main wrapping pipes 11, and the cables are cooled to obtain the multi-core cable;
s4, processing a cable interface:
machining the cylindrical material into a connecting ring 21, a first clamping ring 22, a second clamping ring 23 and a third clamping ring 24, wherein the thread depth of the outer wall of the first clamping ring 22 and the outer wall of the second clamping ring 23 is changed from inside to outside, the thread directions of the first clamping ring 22 and the second clamping ring 23 are opposite, rubber rings are bonded on the inner sides of the first clamping ring 22 and the second clamping ring 23, the thread directions of the two sides of the inner wall of the third clamping ring 24 are opposite, and finally, the cable interface 2 is installed to the end point of the multi-core cable obtained in the step S3, so that the composite multi-core cable is obtained.
As shown in fig. 6-7, the slot-broaching machine includes a wire-pulling wheel 31, a wire-releasing wheel 32, a wire-pulling groove 33, and a base 34, wherein the wire-pulling wheel 31 and the wire-releasing wheel 32 are respectively rotatably connected to two sides of the base 34, the rear end of the wire-pulling wheel 31 is in transmission connection with a wire-pulling motor 35, the bottom of the wire-pulling motor 35 is fixedly connected to the base 34, the wire-pulling groove 33 is fixedly connected to the middle of the base 34, an arc-shaped lobe 134 is formed through the wire-pulling groove 33, the skin effect of the conductor is enhanced, the resistance of the conductor is reduced, and the electric energy can be efficiently transmitted.
As shown in fig. 8, the positioning device includes a positioning seat 41 and a positioning ring 42, the positioning ring 42 is fixedly connected above the positioning seat 41, seven positioning holes 43 are provided in the positioning ring 42, and the distance between the main lines 13 is fixed by the positioning device, so as to avoid contact between the main lines 13.
The shielding film 12 is prepared by mixing carbon fibers, silver nanowires and cellulose according to a mass ratio of 1: 5: 2, self-assembling and stacking to form a film under the orientation conditions of vacuum and magnetic field, and then plating a metal layer on the film by brush plating and composite electrodeposition to finally obtain the shielding film 12 which can effectively shield the electromagnetic interference among the branch lines 132.
The anti-interference layer 14 is made of the following components in parts by weight: 50 parts of wave absorbing powder, 20 parts of alicyclic epoxy resin, 9 parts of etherified amino resin, 10 parts of fly ash cenospheres, 12 parts of ethanol, 0.5 part of dispersing agent and 5 parts of alumina micro powder, and can effectively resist the interference of an external electromagnetic field to the cable.
In step S2, the heating temperature of the secondary wrapping tube 133 is 100 ℃, and the secondary wrapping tube 133 has good shrinkage in this temperature range.
In step S3, the water cooling temperature of the water tank is 10 degrees, the cooling time is 2min, the cooling speed is fast, and the cooling efficiency is high.
The cooling mode of the main wrapping pipe 11 on the outer side of the cable is air cooling, the air cooling temperature is 5 ℃, and the air cooling is carried out until the temperature of the main wrapping pipe 11 is 30 ℃ and then natural cooling is carried out.
The extrusion speed of the rubber extruder is 6m/min, and at the extrusion speed, the extruded material is uniform and is well formed after extrusion.
Comparing example 2 to example 4, the cable produced in example 4 has the best electromagnetic interference resistance, higher electric energy transmission efficiency and the highest production efficiency, so example 4 is the best example.
Claims (10)
1. The composite multi-core cable is characterized by comprising a cable (1) and cable interfaces (2), wherein the cable interfaces (2) are arranged at end points of the cable, the cable (1) comprises a main wrapping pipe (11) and main lines (13), the main lines (13) comprise seven, insulating rubber (131) is filled between the seven main lines (13), an anti-interference layer (14) is wrapped on the outer sides of the seven main lines (13), the main wrapping pipe (11) is fixedly wrapped on the outer sides of the anti-interference layer (14), the main lines (13) comprise branch lines (132) and auxiliary wrapping pipes (133), the branch lines (132) comprise seven, a shielding film (12) is wrapped on the outer sides of each branch line (132), the auxiliary wrapping pipes (133) are wrapped on the outer sides of the seven branch lines (132), and six arc-shaped petals (134) are arranged on the outer sides of the cross sections of the branch lines (132);
the cable connector (2) comprises a connecting ring (21), a first clamping ring (22), a second clamping ring (23) and a third clamping ring (24), wherein seven groups of connecting holes (25) are arranged in the connecting ring (21), each group of connecting holes (25) is provided with seven small holes (251), a connecting buckle (26) is connected in the small holes (251) in a clamping manner, two winding columns (29) used for winding branch lines (132) are arranged at two ends of the connecting buckle (26), two threading holes (261) are formed in the middle of the connecting buckle (26), rubber rings (27) are arranged on the inner sides of the first clamping ring (22) and the second clamping ring (23), barbs (28) are arranged on the inner walls of the outer sides of the first clamping ring (22) and the second clamping ring (23), and the outer wall of the inner sides of the first clamping ring (22) and the second clamping ring (23) is connected with the third clamping ring (24) through threads.
2. The method of claim 1, comprising the steps of:
s1, pulling grooves by a branch line (132):
the circular section of the electric wire is changed into a hexapetaloid section through a groove broacher, and the wire drawing speed of the groove broacher is 60 m/min; obtaining a branch line (132);
s2, preparing a main line (13):
winding a shielding film (12) on the outer side of the branch lines (132) obtained in the step S1, then gathering seven branch lines (132) into folded lines, coating talcum powder on the outer sides of the folded lines, then guiding the folded lines into secondary wrapping pipes (133), and heating the outer sides of the folded lines to shrink the secondary wrapping pipes (133) to obtain main lines (13);
s3, preparing a multi-core cable:
the method comprises the following steps that seven main lines (13) penetrate through a positioning device and then are straightened to enter a rubber extruder, rubber materials are filled between the main lines (13) to form cables, the cables are guided to a water pool to be cooled, the cooled cables are dried, an anti-interference layer (14) wraps the outer sides of the dried cables, talcum powder is smeared on the outer sides of the cables wrapped with the interference layer and then guided into the rubber extruder, the rubber is wrapped on the outer sides of the anti-interference layer (14) to form a main wrapping pipe (11), and the cables are cooled to obtain the multi-core cable;
s4, processing a cable interface:
machining the cylindrical material into a connecting ring (21), a first clamping ring (22), a second clamping ring (23) and a third clamping ring (24), wherein the thread depth of the outer walls of the first clamping ring (22) and the second clamping ring (23) is changed from inside to outside, the thread directions of the first clamping ring (22) and the second clamping ring (23) are opposite, rubber rings are bonded on the inner sides of the first clamping ring (22) and the second clamping ring (23), the thread directions of the two sides of the inner wall of the third clamping ring (24) are opposite, and finally, the cable interface (2) is installed to the end point of the multi-core cable obtained in the step S3 to obtain the composite multi-core cable.
3. The preparation method of the composite multi-core cable according to claim 2, wherein the groove broacher comprises a wire drawing wheel (31), a wire releasing wheel (32), a wire drawing groove (33) and a base (34), the wire drawing wheel (31) and the wire releasing wheel (32) are respectively and rotatably connected to two sides of the base (34), a wire drawing motor (35) is connected to the rear end of the wire drawing wheel (31) in a transmission manner, the bottom of the wire drawing motor (35) is fixedly connected with the base (34), and the wire drawing groove (33) is fixedly connected to the middle of the base (34).
4. The method for manufacturing a composite multicore cable according to claim 2, wherein the positioning device comprises a positioning seat (41) and a positioning ring (42), the positioning ring (42) is fixedly connected above the positioning seat (41), and seven positioning holes (43) are formed in the positioning ring (42).
5. The method for preparing a composite multicore cable according to claim 2, wherein the shielding film (12) is formed by laminating carbon fibers, silver nanowires, cellulose in a mass ratio of 1: 5: 2, self-assembling and stacking to form a film under the orientation conditions of vacuum and magnetic field, and then plating a metal layer on the film by brush plating and composite electrodeposition to finally obtain the shielding film (12).
6. The method for preparing a composite multi-core cable according to claim 2, wherein the anti-interference layer (14) is made of the following materials in parts by weight: 45-50 parts of wave absorbing powder, 15-20 parts of alicyclic epoxy resin, 7-9 parts of etherified amino resin, 5-10 parts of fly ash hollow microspheres, 8-12 parts of ethanol, 0.1-0.5 part of dispersing agent and 3-5 parts of alumina micro powder.
7. The method as claimed in claim 2, wherein the heating temperature of the secondary sheathing tube (133) in step S2 is 90 to 100 ℃.
8. The method for preparing the composite multi-core cable as claimed in claim 2, wherein in the step S3, the water cooling temperature of the water pool is 5-10 degrees, and the cooling time is 1-2 min.
9. The preparation method of the composite multi-core cable as claimed in claim 2, wherein the cooling mode of the main wrapping tube (11) outside the cable is air cooling, the air cooling temperature is 3-5 ℃, and the air cooling is carried out until the temperature of the main wrapping tube (11) is less than or equal to 50 ℃ and then natural cooling is carried out.
10. The method for preparing a composite multicore cable according to claim 2, wherein the cooling of the main wrapping tube (11) outside the cable is air-cooled.
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