CN114678176B - Preparation method of cable with antimagnetic and anti-interference functions - Google Patents
Preparation method of cable with antimagnetic and anti-interference functions Download PDFInfo
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- CN114678176B CN114678176B CN202210356352.5A CN202210356352A CN114678176B CN 114678176 B CN114678176 B CN 114678176B CN 202210356352 A CN202210356352 A CN 202210356352A CN 114678176 B CN114678176 B CN 114678176B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000009941 weaving Methods 0.000 claims abstract description 62
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000002184 metal Substances 0.000 claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 32
- 239000004020 conductor Substances 0.000 claims abstract description 23
- 238000011049 filling Methods 0.000 claims abstract description 16
- 238000001125 extrusion Methods 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 13
- 239000010949 copper Substances 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
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- 239000003063 flame retardant Substances 0.000 claims abstract description 10
- 238000000137 annealing Methods 0.000 claims abstract description 8
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- 238000005491 wire drawing Methods 0.000 claims abstract description 3
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- 238000009954 braiding Methods 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 8
- 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 6
- 229920000728 polyester Polymers 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
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Images
Classifications
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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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
- H01B13/2606—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by braiding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/10—Screens specially adapted for reducing interference from external sources
- H01B11/1033—Screens specially adapted for reducing interference from external sources composed of a wire-braided conductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
- H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
- H01B13/2686—Pretreatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/228—Metal braid
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a preparation method of a cable with antimagnetic and anti-interference functions, which comprises the following steps: a: a plurality of metal wires after metal wire drawing and annealing are formed into a conductor bundle by stranded wires after bundling and complex twisting, the directions of the stranded wires adopted by the conductor bundle and the stranded wires in the complex twisting are opposite, and an insulating layer is coated on the outer layer of the conductor bundle by adopting an extrusion process to form a wire core; b: filling layers are added among cores of the plurality of wire cores and outside the cores through an extrusion process to form a cable core, and annealed soft copper wires are adopted to be crossed and woven outside the cable core according to a certain density to form a shielding layer with a certain thickness; c: adding the heat-resistant agent and the phosphorus-nitrogen halogen-free material into a high-speed mixer, uniformly stirring to form a heat-resistant mixture, and extruding the heat-resistant mixture through an extrusion molding machine to obtain a flame retardant layer; d: coating a protective outer sleeve outside the flame retardant layer to manufacture a cable; according to the invention, the anti-electromagnetic interference of the cable is realized by adopting a mode of combining the anisotropic twisting with the weaving of the annealed soft copper wires, and the anti-electromagnetic function can be realized in various frequency bands.
Description
Technical Field
The invention relates to the technical field of cables for electrical equipment, in particular to a preparation method of a cable with antimagnetic and anti-interference functions.
Background
Shielding is the isolation of metal between two spatial regions to control the induction and radiation of electric, magnetic and electromagnetic waves from one region to the other. Specifically, the shielding body is used for surrounding the interference source of the element part, the circuit, the assembly, the cable or the whole system, and preventing the interference electromagnetic field from diffusing outwards; the receiving circuit, device or system is surrounded by a shield to protect them from external electromagnetic fields. The shield has a function of reducing interference because the shield plays roles of absorbing energy (eddy current loss), reflecting energy (interface reflection of electromagnetic wave on the shield) and canceling energy (electromagnetic induction generates a reverse electromagnetic field on the shield layer, which can cancel part of interference electromagnetic wave) for interference electromagnetic wave and internal electromagnetic wave from outside of a wire, a cable, a component, a circuit or a system, and the like.
When the frequency of the interference electromagnetic field is higher, the eddy current generated in the metal material with low resistivity is utilized to form the counteraction effect on the electromagnetic wave, so that the shielding effect is achieved; when the frequency of the interference electromagnetic wave is lower, a material with high magnetic permeability is adopted, so that magnetic lines of force are limited in the shield body, and are prevented from being diffused to a shielded space; in some occasions, if a good shielding effect is required for both high-frequency and low-frequency electromagnetic fields, therefore, in the prior art, different metal materials are usually adopted to form a multilayer shielding body to cover the outer side of a conductor, but the cable manufactured by the method has a complex structure and high implementation cost, and a high-permeability material is required to be additionally configured as a shielding layer, which can increase the hardness of the cable and is not suitable for mobile electrical equipment.
At present, various mobile electrical equipment in an electromagnetic wave complex interference environment requires that a cable used in the operation process has the interference of resisting external electromagnetic waves, various transmitted current signals are ensured to be safe, stable and reliable without distortion, and the safe operation of the electrical equipment is effectively protected. The existing preparation method of the cable with the anti-magnetic and anti-interference functions is to simply realize the anti-magnetic function by coating a multi-layer metal net structure on the outer side of a conductor, but the method does not have the function of electromagnetically isolating or shielding multi-band electromagnetic waves, so that the safe operation of the electrical equipment cannot be ensured.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the cable among the prior art can not shield anti-jamming problem to the electromagnetic wave of high low frequency simultaneously, can't guarantee when normal operating process, avoids appearing the condition of current signal distortion in the transmission course.
In order to solve the technical problem, the invention provides a preparation method of a cable with antimagnetic and anti-interference functions, which comprises the following steps: step a: firstly, drawing a metal wire, annealing the drawn metal wire, bunching and twisting a plurality of annealed metal wires by a stranded wire to form a conductor bundle, wherein the directions of the stranded wire adopted by the conductor bundle and each layer of stranded wire during twisting are opposite, and coating an insulating layer on the outer layer of the conductor bundle by adopting an extrusion process to form a wire core;
step b: filling layers are added among cores of the wire cores and outside the cores through an extrusion process to form a cable core, and annealed soft copper wires are adopted to be crossed and woven outside the cable core according to a certain density to form a shielding layer with a certain thickness;
step c: selecting phosphorus-nitrogen halogen-free as a raw material, adding the heat-resistant agent and the phosphorus-nitrogen halogen-free into a high-speed mixer, uniformly stirring to form a heat-resistant mixing agent, and extruding the heat-resistant mixing agent through an extrusion forming machine to obtain a flame retardant layer;
step d: a protective outer sleeve is sleeved outside the flame retardant layer to manufacture a cable;
in the step a, the bunching pitch ratio of the folded yarn is adjusted according to the diameter of the metal wire after the metal wire is drawn and annealed, and then the stranding pitch ratio of the folded yarn is determined according to the bunching pitch ratio of the folded yarn;
in the step b, the weaving density of the electromagnetic shielding layer is selected according to the diameter of the annealed soft copper wire, and then the thickness of the electromagnetic shielding layer is determined according to the weaving density of the electromagnetic shielding layer.
In the embodiment of the application, when the binding pitch ratio of the stranded wire is adjusted according to the diameter of the metal wire, a diameter standard value a of the metal wire, a diameter matrix B of the metal wire, B (B1, B2, B3, B4, B5) is preset, wherein B1 is the diameter of a first preset metal wire, B2 is the diameter of a second preset metal wire, B3 is the diameter of a third preset metal wire, B4 is the diameter of a fourth preset metal wire, B5 is the diameter of a fifth preset metal wire, and B1< B2< B3< B4< B5;
a bunching pitch-diameter ratio matrix C, C (C1, C2, C3, C4, C5) for the strands, where C1 is the bunching pitch-diameter ratio of the first predetermined strand, C2 is the bunching pitch-diameter ratio of the second predetermined strand, C3 is the bunching pitch-diameter ratio of the third predetermined strand, C4 is the bunching pitch-diameter ratio of the fourth predetermined strand, C5 is the bunching pitch-diameter ratio of the fifth predetermined strand, and C1< C2< C3< C4< C5;
when the binding pitch diameter ratio of the plied yarn is determined, setting the binding pitch diameter ratio of the actual plied yarn according to the relation between the diameter of the metal wire determined in real time and the preset diameter standard value A of the metal wire;
when A is less than B1, selecting the bunching pitch ratio of the fifth preset strand as the bunching pitch ratio of the actual strand;
when B1 is more than or equal to A < B2, selecting the bunching pitch ratio of the fourth preset plied yarn as the bunching pitch ratio of the actual plied yarn;
when B2 is more than or equal to A < B3, selecting the bunching pitch ratio of the third preset plied yarn as the bunching pitch ratio of the actual plied yarn;
when B3 is more than or equal to A < B4, selecting the bunching pitch ratio of the second preset plied yarn as the bunching pitch ratio of the actual plied yarn;
when A > B5, the bunching pitch ratio of the first pre-set strand is selected as the bunching pitch ratio of the actual strand.
In an embodiment of the application, a method for manufacturing a cable with a magnetic-resisting and interference-resisting function is provided, where a preset strand lay ratio matrix V, V (V1, V2, V3, V4, V5) is provided, where V1 is a strand lay ratio of a first preset strand, V2 is a strand lay ratio of a second preset strand, V3 is a strand lay ratio of a third preset strand, V4 is a strand lay ratio of a fourth preset strand, V5 is a strand lay ratio of a fifth preset strand, and V1 < V2 < V3 < V4 < V5;
when the adding amount of the beam-combining pitch-diameter ratio of the fifth preset strand is selected as the beam-combining pitch-diameter ratio of the actual strand, selecting V1 from the matrix V as the stranding pitch-diameter ratio of the actual strand;
when the bunching pitch-diameter ratio of the fourth preset strand is selected as the bunching pitch-diameter ratio of the actual strand, selecting V2 from the matrix V as the stranding pitch-diameter ratio of the actual strand;
when the bunching pitch-diameter ratio of the third preset strand is selected as the bunching pitch-diameter ratio of the actual strand, selecting V3 from the matrix V as the stranding pitch-diameter ratio of the actual strand;
when the bunching pitch diameter ratio of the second preset strand is selected as the bunching pitch diameter ratio of the actual strand, V4 is selected from the matrix V as the stranding pitch diameter ratio of the actual strand.
When the bunching pitch diameter ratio of the first preset strand is selected as the bunching pitch diameter ratio of the actual strand, V5 is selected from the matrix V as the stranding pitch diameter ratio of the actual strand.
In the embodiment of the application, a method for preparing a cable with antimagnetic and anti-interference functions is provided, the diameter grade of an annealed soft copper wire is determined, a diameter standard value A of the annealed soft copper wire is preset, a diameter matrix B of the annealed soft copper wire is preset, B (B1, B2, B3, B4 and B5) are preset, wherein B1 is the diameter of a first preset annealed soft copper wire, B2 is the diameter of a second preset annealed soft copper wire, B3 is the diameter of a third preset annealed soft copper wire, B4 is the diameter of a fourth preset annealed soft copper wire, B5 is the diameter of a fifth preset annealed soft copper wire, and B1< B2< B3< B4< B5;
for electromagnetic shielding layer weave density matrix C, C (C1, C2, C3, C4, C5), wherein C1 is a weave density of a first preset electromagnetic shielding layer, C2 is a weave density of a second preset electromagnetic shielding layer, C3 is a weave density of a third preset electromagnetic shielding layer, C4 is a weave density of a fourth preset electromagnetic shielding layer, C5 is a weave density of a fifth preset electromagnetic shielding layer, and C1< C2< C3< C4< C5;
when the weaving density of the electromagnetic shielding layer is determined, the diameter of an actual annealed soft copper wire is set according to the relation between the diameter of the annealed soft copper wire determined in real time and the diameter value A of the preset annealed soft copper wire;
when A is less than B1, selecting the weaving density of a fifth preset electromagnetic shielding layer as the weaving density of the actual electromagnetic shielding layer;
when B1 is not less than A < B2, selecting the weaving density of the fourth preset electromagnetic shielding layer as the weaving density of the actual electromagnetic shielding layer;
when B2 is not less than A < B3, selecting the braiding density of a third preset electromagnetic shielding layer as the braiding density of the actual electromagnetic shielding layer;
when B3 is not less than A < B4, selecting the weaving density of a second preset electromagnetic shielding layer as the weaving density of the actual electromagnetic shielding layer;
when A > B5, the braiding density of the first predetermined electromagnetic shielding layer is selected as the braiding density of the actual electromagnetic shielding layer.
In an embodiment of the application, a method for manufacturing a cable with antimagnetic and anti-interference functions is provided, wherein a thickness matrix V, V (V1, V2, V3, V4, V5) of an electromagnetic shielding layer is preset, wherein V1 is a thickness of a first preset electromagnetic shielding layer, V2 is a thickness of a second preset electromagnetic shielding layer, V3 is a thickness of a third preset electromagnetic shielding layer, V4 is a thickness of a fourth preset electromagnetic shielding layer, V5 is a thickness of a fifth preset electromagnetic shielding layer, and V1 < V2 < V3 < V4 < V5;
when the weaving density of the fifth preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, selecting V1 from the matrix V as the thickness of the actual electromagnetic shielding layer;
when the weaving density of the fourth preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, selecting V2 from the matrix V as the thickness of the actual electromagnetic shielding layer;
when the weaving density of the third preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, selecting V3 from the matrix V as the thickness of the actual electromagnetic shielding layer;
when the weaving density of the second preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, selecting V4 from the matrix V as the thickness of the actual electromagnetic shielding layer;
when the weaving density of the first preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, V5 is selected from the matrix V as the thickness of the actual electromagnetic shielding layer.
In the embodiment of the application, a preparation method of the cable with the antimagnetic anti-interference function is provided, wherein superfine talcum powder is coated outside the insulating layer, and the talcum powder is superfine talcum powder with the particle size smaller than 1000 meshes so as to reduce friction between the wire core and the filler.
In the embodiment of the application, a preparation method of a cable with the antimagnetic anti-interference function is provided, wherein a polyester tape is wrapped outside a wire core and in the outer layer direction of a conductor bundle, and a high-temperature polyester tape with the thickness of 0.04mm is wrapped outside the wire core and outside the conductor bundle in an overlapping manner.
In the embodiment of the application, a preparation method of a cable with antimagnetic and anti-interference functions is provided, wherein polyvinyl chloride is selected as a raw material of an insulating layer, the average thickness of the insulating layer is not less than a nominal value, the average thickness of the insulation is not more than the nominal value, the thickness of the thinnest part is not less than 90-0.1 mm of the nominal value, and the mechanical properties of the insulation extruded and vulcanized are as follows: the tensile strength is not less than 6.5N/mm2, the elongation at break is not less than 250%, the insulated wire core is subjected to a water immersion pressure test at a test voltage of 3.5kV/5min without breakdown, and the surface of the insulated wire core is wiped cleanly with water after the test.
In the embodiment of the application, a preparation method of a cable with antimagnetic and anti-interference functions is provided, and ethylene propylene rubber is selected as a raw material for filling between cores and filling outside the cores.
In the embodiment of the application, a preparation method of a cable with antimagnetic and anti-interference functions is provided, and the inter-core filling and the outer-core filling are strip-shaped structures.
Compared with the prior art, the preparation method of the cable with the antimagnetic and anti-interference functions has the following beneficial effects:
1. the anti-electromagnetic interference performance of the cable is improved by adopting a mode of combining the anisotropic twisting and the cross weaving of the annealed soft copper wires, wherein the annealed soft copper wires are woven into an electromagnetic shielding layer with a certain thickness according to a certain density, so that the electromagnetic interference higher than 1KHz can be prevented, and the electromagnetic interference lower than 1KHz is shielded by a structure that conductors are twisted in different directions according to different pitch-diameter ratios.
2. The cable can shield surrounding external electromagnetic waves in the operation process, so that various stray signals in an external space are isolated outside the shielding layer, the signals are ensured to be complete and undistorted, data errors are avoided, the data transmission speed is improved, the stability, safety and reliability of the transmitted signals in the circuit are ensured, and meanwhile, the safe operation of electrical equipment is effectively protected.
3. According to the invention, the stranding pitch diameter ratio of the stranded wire is determined by controlling the binding pitch diameter ratio of the cable stranded wire, and the weaving density of the copper wire is determined by the annealing temperature of the copper wire, so that the antimagnetic anti-interference performance of the cable can be improved, and the production efficiency of the cable can be effectively improved by the method.
Drawings
Fig. 1 is a flowchart of a method for manufacturing a cable with antimagnetic and anti-interference functions according to the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In an embodiment of the present application, the present invention provides a method for manufacturing a cable with antimagnetic and anti-interference functions, including: a, step a: firstly, drawing a metal wire, annealing the drawn metal wire, bunching and twisting a plurality of annealed metal wires by a stranded wire to form a conductor bundle, wherein the directions of the stranded wire adopted by the conductor bundle and each layer of stranded wire during twisting are opposite, and coating an insulating layer on the outer layer of the conductor bundle by adopting an extrusion process to form a wire core;
step b: filling layers are added among cores of the wire cores and outside the cores through an extrusion process to form a cable core, and annealed soft copper wires are adopted to be crossed and woven outside the cable core according to a certain density to form a shielding layer with a certain thickness;
step c: selecting phosphorus-nitrogen halogen-free as a raw material, adding the heat-resistant agent and the phosphorus-nitrogen halogen-free into a high-speed mixer, uniformly stirring to form a heat-resistant mixing agent, and extruding the heat-resistant mixing agent through an extrusion forming machine to obtain a flame retardant layer;
step d: a protective outer sleeve is sleeved outside the flame retardant layer to manufacture a cable;
in the step a, the bunching pitch ratio of the folded yarn is adjusted according to the diameter of the metal wire after the metal wire is drawn and annealed, and then the stranding pitch ratio of the folded yarn is determined according to the bunching pitch ratio of the folded yarn;
in the step b, the weaving density of the electromagnetic shielding layer is selected according to the diameter of the annealed soft copper wire, and then the thickness of the electromagnetic shielding layer is determined according to the weaving density of the electromagnetic shielding layer.
In the embodiment of the application, when the binding pitch ratio of the stranded wire is adjusted according to the diameter of the metal wire, a diameter standard value a of the metal wire, a diameter matrix B of the metal wire, B (B1, B2, B3, B4, B5) is preset, wherein B1 is the diameter of a first preset metal wire, B2 is the diameter of a second preset metal wire, B3 is the diameter of a third preset metal wire, B4 is the diameter of a fourth preset metal wire, B5 is the diameter of a fifth preset metal wire, and B1< B2< B3< B4< B5;
for a strand bundle-to-pitch ratio matrix C, C (C1, C2, C3, C4, C5), wherein C1 is a bundle-to-pitch ratio of a first preset strand, C2 is a bundle-to-pitch ratio of a second preset strand, C3 is a bundle-to-pitch ratio of a third preset strand, C4 is a bundle-to-pitch ratio of a fourth preset strand, C5 is a bundle-to-pitch ratio of a fifth preset strand, and C1< C2< C3< C4< C5;
when the binding pitch diameter ratio of the plied yarn is determined, setting the binding pitch diameter ratio of the actual plied yarn according to the relation between the diameter of the metal wire determined in real time and the preset diameter standard value A of the metal wire;
when A is less than B1, selecting the bunching pitch ratio of the fifth preset strand as the bunching pitch ratio of the actual strand;
when B1 is more than or equal to A < B2, selecting the bunching pitch ratio of the fourth preset plied yarn as the bunching pitch ratio of the actual plied yarn;
when B2 is more than or equal to A < B3, selecting the bunching pitch ratio of the third preset plied yarn as the bunching pitch ratio of the actual plied yarn;
when B3 is more than or equal to A < B4, selecting the bunching pitch ratio of the second preset plied yarn as the bunching pitch ratio of the actual plied yarn;
when A > B5, the bunching pitch ratio of the first pre-set strand is selected as the bunching pitch ratio of the actual strand.
In an embodiment of the application, a method for manufacturing a cable with a magnetic-resisting and interference-resisting function is provided, where a preset strand lay ratio matrix V, V (V1, V2, V3, V4, V5) is provided, where V1 is a strand lay ratio of a first preset strand, V2 is a strand lay ratio of a second preset strand, V3 is a strand lay ratio of a third preset strand, V4 is a strand lay ratio of a fourth preset strand, V5 is a strand lay ratio of a fifth preset strand, and V1 < V2 < V3 < V4 < V5;
when the adding amount of the beam-combining pitch-diameter ratio of the fifth preset strand is selected as the beam-combining pitch-diameter ratio of the actual strand, selecting V1 from the matrix V as the stranding pitch-diameter ratio of the actual strand;
when the bunching pitch-diameter ratio of the fourth preset strand is selected as the bunching pitch-diameter ratio of the actual strand, selecting V2 from the matrix V as the stranding pitch-diameter ratio of the actual strand;
when the bunching pitch-diameter ratio of the third preset strand is selected as the bunching pitch-diameter ratio of the actual strand, selecting V3 from the matrix V as the stranding pitch-diameter ratio of the actual strand;
when the bunching pitch diameter ratio of the second preset strand is selected as the bunching pitch diameter ratio of the actual strand, V4 is selected from the matrix V as the stranding pitch diameter ratio of the actual strand.
When the bunching pitch diameter ratio of the first preset strand is selected as the bunching pitch diameter ratio of the actual strand, V5 is selected from the matrix V as the stranding pitch diameter ratio of the actual strand.
In the embodiment of the application, a method for preparing a cable with antimagnetic and anti-interference functions is provided, the diameter grade of an annealed soft copper wire is determined, a diameter standard value A of the annealed soft copper wire is preset, a diameter matrix B of the annealed soft copper wire is preset, B (B1, B2, B3, B4 and B5) are preset, wherein B1 is the diameter of a first preset annealed soft copper wire, B2 is the diameter of a second preset annealed soft copper wire, B3 is the diameter of a third preset annealed soft copper wire, B4 is the diameter of a fourth preset annealed soft copper wire, B5 is the diameter of a fifth preset annealed soft copper wire, and B1< B2< B3< B4< B5;
for electromagnetic shielding layer weave density matrix C, C (C1, C2, C3, C4, C5), wherein C1 is a weave density of a first preset electromagnetic shielding layer, C2 is a weave density of a second preset electromagnetic shielding layer, C3 is a weave density of a third preset electromagnetic shielding layer, C4 is a weave density of a fourth preset electromagnetic shielding layer, C5 is a weave density of a fifth preset electromagnetic shielding layer, and C1< C2< C3< C4< C5;
when the weaving density of the electromagnetic shielding layer is determined, the diameter of an actual annealed soft copper wire is set according to the relation between the diameter of the annealed soft copper wire determined in real time and the diameter value A of the preset annealed soft copper wire;
when A is less than B1, selecting the weaving density of a fifth preset electromagnetic shielding layer as the weaving density of the actual electromagnetic shielding layer;
when B1 is not less than A < B2, selecting the weaving density of the fourth preset electromagnetic shielding layer as the weaving density of the actual electromagnetic shielding layer;
when B2 is not less than A < B3, selecting the braiding density of a third preset electromagnetic shielding layer as the braiding density of the actual electromagnetic shielding layer;
when B3 is not less than A < B4, selecting the weaving density of a second preset electromagnetic shielding layer as the weaving density of the actual electromagnetic shielding layer;
when A > B5, the braiding density of the first predetermined electromagnetic shielding layer is selected as the braiding density of the actual electromagnetic shielding layer.
In an embodiment of the application, a method for manufacturing a cable with antimagnetic and anti-interference functions is provided, wherein a thickness matrix V, V (V1, V2, V3, V4, V5) of an electromagnetic shielding layer is preset, wherein V1 is a thickness of a first preset electromagnetic shielding layer, V2 is a thickness of a second preset electromagnetic shielding layer, V3 is a thickness of a third preset electromagnetic shielding layer, V4 is a thickness of a fourth preset electromagnetic shielding layer, V5 is a thickness of a fifth preset electromagnetic shielding layer, and V1 < V2 < V3 < V4 < V5;
when the weaving density of the fifth preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, selecting V1 from the matrix V as the thickness of the actual electromagnetic shielding layer;
when the weaving density of the fourth preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, selecting V2 from the matrix V as the thickness of the actual electromagnetic shielding layer;
when the weaving density of the third preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, selecting V3 from the matrix V as the thickness of the actual electromagnetic shielding layer;
when the weaving density of the second preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, selecting V4 from the matrix V as the thickness of the actual electromagnetic shielding layer;
when the weaving density of the first preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, V5 is selected from the matrix V as the thickness of the actual electromagnetic shielding layer.
In the embodiment of the application, a preparation method of the cable with the antimagnetic and anti-interference functions is provided, wherein the insulating layer is coated with superfine talcum powder, and the particle size of the talcum powder is smaller than 1000 meshes so as to reduce friction between the wire core and the filling.
In the embodiment of the application, a preparation method of a cable with the antimagnetic anti-interference function is provided, wherein a polyester tape is wrapped outside a wire core and in the outer layer direction of a conductor bundle, and a high-temperature polyester tape with the thickness of 0.04mm is wrapped outside the wire core and outside the conductor bundle in an overlapping manner.
In the embodiment of the application, a preparation method of a cable with antimagnetic and anti-interference functions is provided, wherein polyvinyl chloride is selected as a raw material of an insulating layer, the average thickness of the insulating layer is not less than a nominal value, the average thickness of the insulation is not more than the nominal value, the thickness of the thinnest part is not less than 90-0.1 mm of the nominal value, and the mechanical properties of the insulation extruded and vulcanized are as follows: the tensile strength is not less than 6.5N/mm2, the elongation at break is not less than 250%, the insulated wire core is subjected to a water immersion pressure test at a test voltage of 3.5kV/5min, and is not broken through, and the surface of the insulated wire core is wiped cleanly with water after the test.
In the embodiment of the application, a preparation method of a cable with antimagnetic and anti-interference functions is provided, and ethylene propylene rubber is selected as a raw material for filling between cores and filling outside the cores.
In the embodiment of the application, a preparation method of a cable with antimagnetic and anti-interference functions is provided, and the inter-core filling and the outer-core filling are strip-shaped structures.
In summary, the invention discloses a preparation method of a cable with antimagnetic and anti-interference functions, which comprises the following steps: the method comprises the following steps: step a: a plurality of metal wires after metal wire drawing and annealing are formed into a conductor bundle by strand wires after bunching and compound twisting, the directions of the strand wires adopted by the conductor bundle and the strand wires in each layer during compound twisting are opposite, and an insulating layer is coated on the outer layer of the conductor bundle by adopting an extrusion process to form a wire core; step b: filling layers are added among cores of the plurality of wire cores and outside the cores through an extrusion process to form a cable core, and annealed soft copper wires are adopted to be crossed and woven outside the cable core according to a certain density to form a shielding layer with a certain thickness; step c: adding the heat-resistant agent and the phosphorus-nitrogen halogen-free material into a high-speed mixer, uniformly stirring to form a heat-resistant mixing agent, and extruding the heat-resistant mixing agent through an extrusion molding machine to obtain a flame retardant layer; step d: coating a protective outer sleeve outside the flame retardant layer to manufacture a cable; according to the invention, the anti-electromagnetic interference of the cable is realized by adopting a mode of combining the anisotropic twisting with the weaving of the annealed soft copper wires, and the anti-electromagnetic function can be realized in various frequency bands; according to the invention, the electromagnetic interference resistance of the cable is realized by adopting a mode of combining the anisotropic twisting with the weaving of the annealed soft copper wires, the anti-magnetic function can be realized in high and low frequency bands, various stray signals in external space are isolated outside the shielding layer, the completeness and the undistortion of the signals are ensured, the data errors are avoided, and the data transmission speed is improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A preparation method of a cable with antimagnetic and anti-interference functions is characterized by comprising the following steps:
step a: a plurality of metal wires after metal wire drawing and annealing are formed into a conductor bundle by strand wires after bunching and compound twisting, the directions of the strand wires adopted by the conductor bundle and the strand wires in each layer during compound twisting are opposite, and an insulating layer is coated on the outer layer of the conductor bundle by adopting an extrusion process to form a wire core;
step b: filling layers are added among cores of a plurality of wire cores and outside the cores through an extrusion process to form a cable core, and annealed soft copper wires are adopted to be crossed and woven outside the cable core according to a certain density to form a shielding layer with a certain thickness;
step c: adding the heat-resistant agent and the phosphorus-nitrogen halogen-free agent into a high-speed mixer, uniformly stirring to form a heat-resistant mixture, and extruding the heat-resistant mixture through an extrusion molding machine to obtain a flame retardant layer;
step d: coating a protective outer sleeve outside the flame retardant layer to manufacture a cable;
in the step a, the bunching pitch ratio of the folded yarn is adjusted according to the diameter of the metal wire after the metal wire is drawn and annealed, and then the stranding pitch ratio of the folded yarn is determined according to the bunching pitch ratio of the folded yarn;
in the step b, selecting the weaving density of the electromagnetic shielding layer according to the diameter of the annealed soft copper wire, and determining the thickness of the electromagnetic shielding layer according to the weaving density of the electromagnetic shielding layer;
when adjusting the bunching pitch ratio of the strands according to the diameter of the wire, presetting a standard value A of the diameter of the wire, presetting a diameter matrix B, B (B1, B2, B3, B4, B5) of the wire, wherein B1 is the diameter of the first preset wire, B2 is the diameter of the second preset wire, B3 is the diameter of the third preset wire, B4 is the diameter of the fourth preset wire, B5 is the diameter of the fifth preset wire, and B1< B2< B3< B4< B5;
a bunching pitch-diameter ratio matrix C, C (C1, C2, C3, C4, C5) for the strands, where C1 is the bunching pitch-diameter ratio of the first predetermined strand, C2 is the bunching pitch-diameter ratio of the second predetermined strand, C3 is the bunching pitch-diameter ratio of the third predetermined strand, C4 is the bunching pitch-diameter ratio of the fourth predetermined strand, C5 is the bunching pitch-diameter ratio of the fifth predetermined strand, and C1< C2< C3< C4< C5;
when the bunching joint diameter ratio of the plied yarn is determined, the bunching joint diameter ratio of the actual plied yarn is set according to the relation between the diameter of the metal wire determined in real time and the diameter standard value A of the preset metal wire;
when A is less than B1, selecting the bunching pitch ratio of the fifth preset strand as the bunching pitch ratio of the actual strand;
when B1 is more than or equal to A < B2, selecting the bunching pitch ratio of the fourth preset plied yarn as the bunching pitch ratio of the actual plied yarn;
when B2 is more than or equal to A < B3, selecting the bunching pitch ratio of the third preset plied yarn as the bunching pitch ratio of the actual plied yarn;
when B3 is more than or equal to A < B4, selecting the bunching pitch ratio of the second preset plied yarn as the bunching pitch ratio of the actual plied yarn;
when A is larger than B5, selecting the bunching pitch diameter ratio of the first preset strand as the bunching pitch diameter ratio of the actual strand; determining the diameter grade of the annealed soft copper wires, presetting a diameter standard value A of the annealed soft copper wires, presetting a diameter matrix B and B (B1, B2, B3, B4 and B5) of the annealed soft copper wires, wherein B1 is the diameter of a first preset annealed soft copper wire, B2 is the diameter of a second preset annealed soft copper wire, B3 is the diameter of a third preset annealed soft copper wire, B4 is the diameter of a fourth preset annealed soft copper wire, B5 is the diameter of a fifth preset annealed soft copper wire, and B1 is more than B2, more than B3, more than B4 and more than B5;
for electromagnetic shielding layer weave density matrix C, C (C1, C2, C3, C4, C5), wherein C1 is a weave density of a first preset electromagnetic shielding layer, C2 is a weave density of a second preset electromagnetic shielding layer, C3 is a weave density of a third preset electromagnetic shielding layer, C4 is a weave density of a fourth preset electromagnetic shielding layer, C5 is a weave density of a fifth preset electromagnetic shielding layer, and C1< C2< C3< C4< C5;
when the weaving density of the electromagnetic shielding layer is determined, the diameter of the actual annealed soft copper wire is set according to the relation between the diameter of the annealing soft copper wire determined in real time and the diameter value A of the preset annealing soft copper wire;
when A is less than B1, selecting the weaving density of a fifth preset electromagnetic shielding layer as the weaving density of the actual electromagnetic shielding layer;
when B1 is not less than A < B2, selecting the weaving density of the fourth preset electromagnetic shielding layer as the weaving density of the actual electromagnetic shielding layer;
when B2 is not less than A < B3, selecting the braiding density of a third preset electromagnetic shielding layer as the braiding density of the actual electromagnetic shielding layer;
when B3 is not less than A < B4, selecting the weaving density of a second preset electromagnetic shielding layer as the weaving density of the actual electromagnetic shielding layer;
when A > B5, the braiding density of the first predetermined electromagnetic shielding layer is selected as the braiding density of the actual electromagnetic shielding layer.
2. The method for preparing the cable with the functions of anti-magnetism and anti-interference according to claim 1,
a preset strand twist ratio matrix V, V (V1, V2, V3, V4 and V5), wherein V1 is a first preset strand twist ratio, V2 is a second preset strand twist ratio, V3 is a third preset strand twist ratio, V4 is a fourth preset strand twist ratio, V5 is a fifth preset strand twist ratio, and V1 < V2 < V3 < V4 < V5;
when the adding amount of the beam-combining pitch-diameter ratio of the fifth preset strand is selected as the beam-combining pitch-diameter ratio of the actual strand, selecting V1 from the matrix V as the stranding pitch-diameter ratio of the actual strand;
when the bunching pitch-diameter ratio of the fourth preset strand is selected as the bunching pitch-diameter ratio of the actual strand, selecting V2 from the matrix V as the stranding pitch-diameter ratio of the actual strand;
when the bunching pitch-diameter ratio of the third preset strand is selected as the bunching pitch-diameter ratio of the actual strand, selecting V3 from the matrix V as the stranding pitch-diameter ratio of the actual strand;
when the bunching pitch-diameter ratio of the second preset strand is selected as the bunching pitch-diameter ratio of the actual strand, selecting V4 from the matrix V as the stranding pitch-diameter ratio of the actual strand;
when the bunching pitch diameter ratio of the first preset strand is selected as the bunching pitch diameter ratio of the actual strand, V5 is selected from the matrix V as the twisting pitch diameter ratio of the actual strand.
3. The method for preparing the cable with the functions of anti-magnetism and anti-interference according to claim 1,
a thickness matrix V and V (V1, V2, V3, V4 and V5) of the preset electromagnetic shielding layers are provided, wherein V1 is the thickness of the first preset electromagnetic shielding layer, V2 is the thickness of the second preset electromagnetic shielding layer, V3 is the thickness of the third preset electromagnetic shielding layer, V4 is the thickness of the fourth preset electromagnetic shielding layer, V5 is the thickness of the fifth preset electromagnetic shielding layer, and V1 is more than V2, more than V3, more than V4 and more than V5;
when the weaving density of the fifth preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, selecting V1 from the matrix V as the thickness of the actual electromagnetic shielding layer;
when the weaving density of the fourth preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, selecting V2 from the matrix V as the thickness of the actual electromagnetic shielding layer;
when the weaving density of the third preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, selecting V3 from the matrix V as the thickness of the actual electromagnetic shielding layer;
when the weaving density of the second preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, selecting V4 from the matrix V as the thickness of the actual electromagnetic shielding layer;
when the weaving density of the first preset electromagnetic shielding layer is selected as the weaving density of the actual electromagnetic shielding layer, V5 is selected from the matrix V as the thickness of the actual electromagnetic shielding layer.
4. The method for preparing a cable with antimagnetic and anti-interference functions according to claim 1, wherein the insulating layer is coated with ultrafine talcum powder.
5. The method for preparing a cable with antimagnetic and anti-interference functions according to claim 1, wherein polyester tapes are wrapped around the outside of the wire core and the outside of the conductor bundle.
6. The method for preparing a cable with antimagnetic and anti-interference functions according to claim 1, wherein polyvinyl chloride is selected as a raw material of the insulating layer.
7. The method for preparing the cable with the functions of magnetism prevention and interference resistance according to claim 1, wherein ethylene propylene rubber is selected as a raw material for filling between cores and filling outside the cores.
8. The method for preparing a cable with antimagnetic and anti-interference functions according to claim 7, wherein the inter-core filler and the outer-core filler are strip-shaped structures.
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| CN2735514Y (en) * | 2004-09-26 | 2005-10-19 | 江苏东强股份有限公司 | Anticorrosive grounding cable |
| CN103762019A (en) * | 2014-01-14 | 2014-04-30 | 宜昌红旗永进电气有限公司 | Anti-electromagnetic-interference flexible cable and manufacturing method thereof |
| CN206595049U (en) * | 2016-12-28 | 2017-10-27 | 上海电缆厂（南京）有限公司 | Electromagnetism interference flexible cable |
| CN206595056U (en) * | 2016-12-28 | 2017-10-27 | 上海电缆厂（南京）有限公司 | Novel cable |
| CN208335843U (en) * | 2018-06-26 | 2019-01-04 | 江西联创电缆有限公司 | A kind of anti-interference symmetric form soft frequency-conversion power cable peculiar to vessel |
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