CN110675984B - High-temperature-resistant metallurgical vehicle-mounted flexible cable and production process thereof - Google Patents
High-temperature-resistant metallurgical vehicle-mounted flexible cable and production process thereof Download PDFInfo
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- 238000009954 braiding Methods 0.000 claims description 6
- 238000004073 vulcanization Methods 0.000 claims description 6
- 239000005041 Mylar™ Substances 0.000 claims description 5
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000004760 aramid Substances 0.000 claims description 4
- 229920003235 aromatic polyamide Polymers 0.000 claims description 4
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1895—Internal space filling-up means
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- 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
- H01B11/22—Cables including at least one electrical conductor together with optical fibres
-
- 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
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
-
- 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
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
-
- 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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
-
- 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
- H01B7/24—Devices affording localised protection against mechanical force or pressure
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a high-temperature-resistant metallurgical vehicle-mounted flexible cable and a production process thereof, wherein the cable comprises: three control wire cores; each control wire core consists of a control wire core insulating wire core, a multimode optical fiber and a control wire core Mylar tape; three power wire cores; each power wire core is formed by a power wire core insulating wire core, a power wire core filling layer and a power wire core maillard; filling a cable; the cable is arranged between the control wire core and the power wire core and consists of a cable-forming filling insulating wire core and a cable-forming filling layer; an inner liner layer; the control wire core and the power wire core are extruded and wrapped outside; a reinforcing layer; is arranged outside the inner liner; an outer sheath; is arranged outside the reinforcing layer. The cable is of a composite cable structure, conductors are stranded in layers by adopting the same-direction stranding, the outer diameter of the conductors is reduced on the premise that the direct-current resistance of the conductors at 20 ℃ is met, the same-direction structure is more stable, the bending radius is small, the bending performance is better, and the service life is longer.
Description
Technical Field
The invention relates to the field of locomotive cables, in particular to a high-temperature-resistant metallurgical vehicle-mounted flexible cable and a production process thereof.
Background
At present, the buggy ladle cable widely used in metallurgical industry in China mainly uses copper as a conductor and common rubber as a traditional process of insulating and sheathing materials. The steel ladle car cable has huge demand, very special and severe service environment, very high surrounding environment temperature, molten steel splashing and scalding, steel slag collision, cable car stretching, ground abrasion and internal fracture, and causes different damage and even scrapping of the cable. The traditional cable has single conductor structure and low tensile strength; insulation and sheath materials are mechanically, tear-resistant, flex-resistant, elastic and workability poor; poor oxygen and ozone resistance, and is easy to age and deteriorate; the high temperature resistance is poor, and the acid-base corrosion resistance is low; low heat resistance and is a flammable material. Therefore, the cable can generally only run for about 5-10 days, once the problem of the cable is not solved in time, molten steel can not be conveyed to a designated position in time, and the molten steel and the buggy ladle are solidified together, so that not only is great waste caused to resources, but also the result is serious, and the economic loss is great.
CN201310307833.8 discloses a flexible cable for high-temperature metallurgy, which comprises a cable inner core and a cable outer layer wrapped outside the cable inner core, wherein the cable inner core sequentially comprises a conductive wire core, a wrapped mica tape layer, a silicone rubber insulating layer and a fireproof high-temperature resistant layer from inside to outside, the cable outer layer sequentially comprises a high-flame-retardant fire-proof layer and a flame-retardant high-tearing-resistant sheath from inside to outside, and a flame-retardant filling rope is filled in a gap between the cable inner core and the cable outer layer.
However, in the process of developing the technology, the inventor of the present application finds that at least the following technical problems exist in the above technology: under the premise of ensuring the service performance of the cable, the tensile strength, wear resistance, bending resistance and high temperature resistance are improved as much as possible, meanwhile, the cable is required to be more and more compact in structure and stable in signal control, the requirements on the electrical performance, mechanical performance, service life and the like of the cable are higher and higher, and the existing cable structure cannot meet the requirements.
Disclosure of Invention
The invention aims to solve the technical problems of the existing cable that the structure is not compact, the signal control stability is poor, the electrical property and the mechanical property are not high, and the service life is not long, and provides the high-temperature-resistant metallurgical vehicle-mounted flexible cable and the production process thereof, which have the advantages of compact structure, stable signal control, good electrical property and mechanical property, and long service life.
The invention provides a high-temperature-resistant metallurgical vehicle-mounted flexible cable, which comprises three control wire cores; each control wire core consists of a control wire core insulating wire core, a multimode optical fiber and a control wire core Mylar tape;
three power wire cores; each power wire core is formed by a power wire core insulating wire core, a power wire core filling layer and a power wire core maillard;
filling a cable; the cable is arranged between the control wire core and the power wire core and consists of a cable-forming filling insulating wire core and a cable-forming filling layer;
an inner liner layer; the control wire core and the power wire core are extruded and wrapped outside;
a reinforcing layer; is arranged outside the inner liner;
an outer sheath; is arranged outside the reinforcing layer.
Each control wire core comprises five control wire core insulating wire cores, and each control wire core insulating wire core consists of a control wire core conductor and a control wire core insulating layer; five insulating wire cores of the control wire cores are tangent to each other two by two; the multimode optical fiber is arranged at the gaps among the five control wire core insulating wire cores and is tangent to the five control wire core insulating wire cores; the control wire core maillard is wrapped outside the five control wire core insulating wire cores;
each power wire core comprises two power wire core insulation wire cores, and each power wire core insulation wire core consists of a power wire core conductor and a power wire core insulation layer; the power wire core filling layer and the power wire core mailer are sequentially arranged outside the two power wire core insulating wire cores;
the cabling filling insulation wire core consists of a cabling filling conductor and a cabling filling insulation layer; the cabling filler conductor and the cabling filler insulating layer are consistent with the power wire core conductor and the power wire core insulating layer.
The three power wire cores are arranged at intervals of 120 degrees, the three control wire cores are respectively arranged between the two power wire cores, and the adjacent power wire cores are tangent to the adjacent control wire cores; the cabling filling insulating wire core is tangent to the three power wire cores.
The control wire core conductors are formed by layering 7 strands of copper wires, each strand of copper wires comprises 20 copper wires with the wire diameter of 0.145mm, 1 copper foil wire is added into each strand for reinforcement during strand twisting, and the 7 strands of copper wires are twisted in the same direction according to a 1+6 structure; the pitch is 40-50 mm, and the outer diameter of the control wire core conductor after stranding is not more than 2.3mm.
The power wire core conductor and the power wire core conductor are stranded by 37 strands of copper wires in a layering manner, each strand of copper wires comprises 42 copper wires with the wire diameter of 0.195mm, and the 37 strands of copper wires are stranded in the same direction according to a structure of 1+6+12+18; the pitch of the inner layer is 50-60 mm, the pitch of the outer layer is 60-75 mm, and the outer diameter of the power wire core conductor after twisting are not more than 7.3mm.
The control wire core conductor, the power wire core conductor and the power wire core conductor are all 6 th annealed soft round copper conductors conforming to the regulations in EN 60288;
the control wire core insulating layer, the power wire core insulating layer, the cabling filling insulating layer and the outer sheath are made of novel flame-retardant environment-friendly silica gel mixture which meets the EN50382 standard and EI 111.
The thinnest point of the control wire core insulating layer is 0.71mm, and the average thickness is 0.9mm; the outer diameter of the insulating wire core of the control wire core is not more than 11.5mm;
the outer diameters of the power wire core insulating wire core and the cabling filling insulating wire core are not more than 21.0mm;
the three control wire cores, the three power wire cores and the cabling filling twisted into a cable, the cabling pitch is 770-820 mm, and the outer diameter is not more than 51.5mm;
the lining layer is an extrusion type lining layer; the thickness of the thinnest point is 1.6mm, and the average thickness is 2.0mm; the outer diameter of the inner liner is extruded to be not more than 56.5mm;
the external diameter of the high-temperature-resistant metallurgical vehicle-mounted flexible cable is not more than 70.0mm.
The wrapping lap rate of the control wire core Mylar belt and the power wire core Mylar belt is 10-15%;
the twisting pitch of the five control wire core insulating wire cores is 140-160 mm;
the reinforcing layer is formed by braiding 1 strand of twisted 1500D aramid fiber yarn per spindle, the braiding density is 30-40%, the braiding angle is the production process of the high-temperature-resistant metallurgical vehicle-mounted flexible cable, and the production process comprises the following steps:
step one: determining the structure of the cable as described above;
step two: preparing a control wire core conductor, a power wire core conductor and a cabling filling conductor;
step three: extruding a control wire core insulating layer, a power wire core insulating layer and a cabling filling insulating layer outside the control wire core conductor, the power wire core conductor and the cabling filling conductor respectively by adopting a steam continuous vulcanization process;
step four: preparing a control wire core, a power wire core and cabling filling, and cabling the three into a cable core;
step five: and forming an inner liner layer, a reinforcing layer and an outer sheath on the cable core in sequence.
By adopting the technical scheme, the invention has the following technical effects:
1. because the cable adopts the compound type comprehensive cable structure, the conductor adopts the structure of equidirectional beam stranding layering stranding, and the conductor external diameter is reduced under the premise of meeting the direct current resistance of the conductor at 20 ℃, the problem that the structure is not compact and the problem that the conductor external diameter is overlarge in the prior art are effectively solved, and further the effects of softer equidirectional structure, small bending radius and bending resistance are realized, so that the overall external diameter of the cable is small, and the cable is convenient to transport and construct.
2. Because the five insulating wire cores of the control wire cores adopt a tangential structure, the structure of the wire cores is compact, and the outer diameter is reduced; due to the fact that the multimode optical fibers are arranged at the gaps of the control wire cores, the problem that the cable cannot be fed back quickly in the operation process is effectively solved, and further the effects of monitoring the working temperature and the current-carrying capacity of the cable well and feeding back the cable to the control system quickly are achieved.
3. Because three power core adopts 120 to arrange, makes three control core can with it two liang to cut the arrangement, so effectively solved power core and control core structure inseparable, the tensile property not enough problem, and then realized that cable tensile property is good, whole external diameter is little, convenient transportation's effect.
4. The control wire core conductor adopts 20 copper wires with the wire diameter of 0.145mm to be layered and stranded firstly, and 1 copper foil wire is added for reinforcement when stranded, so that the problem that the direct current resistance and the conductor tensile property are compatible in the prior art is effectively solved, and further, the direct current resistance of the conductor is guaranteed, the effect of reinforcing the conductor tensile property is achieved, and the bending resistance is not influenced.
5. Because the power wire core conductor adopts 37 strands of copper wires according to the structure of 1+6+12+18, the effects of better flexibility and bending resistance of the wire core are realized.
6. Because the control wire core conductor and the power wire core conductor adopt 6 th annealed soft round copper conductors conforming to EN60288, the problem of insufficient conductivity and ductility of the cable is solved, and the cable has good conductivity and ductility; because the novel flame-retardant environment-friendly silica gel mixture which meets the EN50382 standard and meets the EI111 is adopted for the control wire core insulating layer, the power wire core insulating layer, the cabling filling insulating layer and the outer protection, the effects of tensile strength, wear resistance, bending resistance and high temperature resistance are realized.
7. The thickness of each layer is the thinnest layer while ensuring the electrical performance, so the problem of overlarge outer diameter of the cable is solved, and the effect of compressing the outer diameter of the cable is realized.
8. Because the cable adopts the aramid fiber yarn braided reinforcing structure, the density of the shielding layer is 30-40%, and the effects of reinforcing the overall tensile strength of the cable and prolonging the service life of the cable sheath are realized.
9. Because the insulating layer adopts the steam continuous vulcanization technology, the problem that the insulating layer is easy to break is solved, and further the elasticity of the insulating layer is increased, so that the tensile property of the cable is improved.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which
FIG. 1 is a schematic view of the structure of the present invention
The reference numerals in the drawings are:
control wire core 100, control wire core insulating wire core 110, control wire core conductor 111, control wire core insulating layer 112, multimode optical fiber 120, control wire core maillard 130;
power core 200, power core insulation core 210, power core conductor 211, power core insulation layer 212, power core filling layer 220, and power core maillard 230;
cabling filler 300, cabling filler insulating wire core 310, cabling filler conductor 311, cabling filler insulating layer 312, and cabling filler layer 320;
an inner liner 400;
a reinforcing layer 500;
an outer sheath 600.
Detailed Description
Example 1
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The high-temperature-resistant metallurgical vehicle-mounted flexible cable shown in fig. 1 comprises three control wire cores 100, three power wire cores 200, a cabling filler 300, an inner liner 400, a reinforcing layer 500 and an outer sheath 600; the cabling filler 300 is positioned in the center, the cabling filler 300 consists of a cabling filler insulating wire core 310 and a cabling filler layer 320, the insulating wire core 310 is placed in the center layer, three groups of power wire cores 200 and control wire cores 100 are effectively supported, the stability of the whole structure of the cable is ensured, the tensile bending performance is good, and the production process control is convenient; three power wire cores 200 are arranged at intervals of 120 degrees in pairs and tangent to the cable-forming filling insulating wire core 310, three control wire cores 100 are arranged in intervals of the power wire cores 200 and tangent to the adjacent power wire cores 200, the problems of loose structures and insufficient tensile properties of the power wire cores and the control wire cores are effectively solved, and the effects of good tensile properties, small overall outer diameter and convenience in transportation of the cable are achieved; the inner liner 400 is extruded outside the control wire core 100 and the power wire core 200; the reinforcing layer 500 is woven by adopting 1 twisted 1500D aramid yarn per spindle outside the lining layer 400, the addition of the aramid yarn enhances the overall tensile strength of the cable and the service life of the cable sheath, the weaving density is controlled between 30% and 40%, the weaving angle is between 50 and 60 degrees, and the tight cladding of the aramid yarn is ensured; finally, an outer jacket 600 is extruded over the reinforcing layer 500.
Still referring to fig. 1, the control wire core 100 is sequentially provided with a multimode optical fiber 120, five control wire core insulating wire cores 110 and a control wire core maillard 130 from inside to outside; five control wire core insulating wire cores 110 are tangent in pairs, the twisting pitch is 140-160 mm, and the twisting pitch can effectively compress the outer diameter; multimode optical fibers 120 are arranged at gaps among the five control wire core insulating wire cores 110, and the multimode optical fibers 120 are tangent to the five control wire core insulating wire cores 110; the multimode optical fiber 120 is beneficial to better monitoring the working temperature and the current-carrying capacity of the cable in the process of the operation of the cable and rapidly feeds back to the control system; the control wire core mailer 130 is wrapped outside the five control wire core insulating wire cores 110; the control wire core insulating wire core 110 is composed of a control wire core conductor 111 and a control wire core insulating layer 112; the control wire core conductor 111 is formed by layering 7 strands of copper wires, each strand of copper wires comprises 20 copper wires with the wire diameter of 0.145mm, and each strand of copper wires is added with 1 copper foil wire for reinforcement during strand twisting, so that the direct-current resistance of the conductor is guaranteed, the tensile performance of the conductor is improved, and the reinforced control wire core conductor 111 is more tensile and has no influence on bending resistance. 7 strands of copper wires are stranded in the same direction according to a 1+6 structure; the pitch is 40-50 mm, the outer diameter of the control wire core conductor 111 after stranding is not more than 2.3mm, the outer diameter of the wire is reduced while the electrical performance is ensured, and the whole outer diameter of the cable is compressed; extruding a control wire core insulating layer 112 outside the control wire core conductor 111 by a steam continuous vulcanization process, specifically, setting the color of the control wire core insulating layer 112 to be a white insulating black digital code, and adopting a 65-sulfur machine for production; the steam pressure is 10MPa, the linear speed is controlled at 15-20 m/min, the plasticity of the insulating layer is reduced, the elasticity is increased, the tensile property of the conductor is improved, the thinnest point of the thickness of the insulating layer 112 of the control wire core is 0.71mm, the average thickness is 0.9mm, the outer diameter of the insulating wire core 110 of the control wire core is not more than 11.5mm, and the overall outer diameter of the cable is reduced.
The power core 200 is sequentially provided with a power core insulating core 210, a power core filling layer 220 and a power core mailer 230 from inside to outside; the cable comprises 2 power wire core insulating wire cores 210,2 power wire core insulating wire cores 210 which are tangent, and the outer diameter of each power wire core insulating wire core 210 is not more than 21.0mm, so that the overall outer diameter of the cable is effectively reduced; the power wire core filling layer 220 is extruded outside the wire core; the power wire core mailer 230 is wrapped outside the power wire core filling layer; the power wire core insulating wire core 210 is composed of a power wire core conductor 211 and a power wire core insulating layer 212; wherein the power wire core conductor 211 is formed by layering and twisting 37 strands of copper wires, each strand of copper wires comprises 42 copper wires with the wire diameter of 0.195mm, and the 37 strands of copper wires are twisted in the same direction according to a structure of 1+6+12+18; the pitch of the inner layer is 50-60 mm during twisting, the pitch of the outer layer is 60-75 mm, and the outer diameter of the power wire core conductor 211 after twisting is not more than 7.3mm; the cable is stranded in the mode, so that the cable has better flexibility and bending resistance, the outer diameter of the wire is reduced while the electrical performance is ensured, and the whole outer diameter of the cable is compressed; extruding a power wire core insulating layer 212 outside the power wire core conductor 211 by a steam continuous vulcanization process, specifically, setting the color of the power wire core insulating layer 212 to be a white insulating black digital code, and adopting a 90-sulfur continuous machine for production; the steam pressure is 12MPa, the linear speed is controlled to be 10-15 m/min, and the test indexes after the power wire core insulating layer 212 is extruded are as follows: the thinnest point of the insulation thickness is 1.16mm, and the average thickness is 1.4mm; the strength is not less than 8.0MPa, the elongation at break is not less than 300%, the thermal extension is not more than 200%, the plasticity of the insulating layer can be reduced, the elasticity is increased, and the tensile property of the conductor is increased by adopting the process.
The cabling core 300 is sequentially provided with a cabling core insulating wire core 310 and a cabling filling layer 320 from inside to outside; wherein the cable-forming core insulation wire core 310 is composed of a cable-forming filling conductor 311 and a cable-forming filling insulation layer 312, and the cable-forming filling conductor 311 and the cable-forming filling insulation layer 312 are consistent with the power wire core conductor 211 and the power wire core insulation layer 212.
The control wire core insulating layer 112, the power wire core insulating layer 212, the cabling filling insulating layer 312 and the outer sheath 600 adopt novel flame-retardant environment-friendly silica gel mixture which meets the EN50382 standard and meets the EI111, and have the effects of tensile strength, wear resistance, bending resistance and high temperature resistance.
The control wire core conductor 111, the power wire core conductor 211 and the power wire core conductor 211 all adopt 6 th annealed soft round copper conductors conforming to the regulations in EN60288, and have good conductivity and ductility.
The three control wire cores 100, the three power wire cores 200 and the cabling filler 300 are twisted into a cable, the cabling pitch is 770-820 mm, the outer diameter is not more than 51.5mm, and the structure has the effects of softer homodromous structure, small bending radius and bending resistance, so that the whole outer diameter of the cable is small, and the cable is convenient to transport and construct.
The wrapping cover rate of the control wire core mailer 130 and the power wire core mailer 230 is 10-15%, so that the cable core is uniformly wrapped, and the control wire core 100 is isolated from the inner liner 400 and is not adhered;
liner 400 is an extruded liner with a thinnest point thickness of 1.6mm and an average thickness of 2.0mm; the outer diameter of the inner liner 400 is not more than 56.5mm after extrusion, so that the outer diameter of the cable is effectively controlled.
The embodiment also comprises a production process of the high-temperature-resistant metallurgical vehicle-mounted flexible cable, which comprises the following steps:
step one: the cable structure is determined, the electric performance is ensured, the thickness of each layer is selected to be the thinnest layer, and based on the structure, the outer diameter of the cable is compressed, so that the whole is more compact;
step two: preparing a control wire core conductor 111, a power wire core conductor 211 and a cabling filling conductor 311; the structures of the control wire core conductor 111, the power wire core conductor 211 and the cabling filling conductor 311 are shown in fig. 1, and the preparation method is as described above and will not be described again here;
step three: extruding a control wire core insulating layer 112, a power wire core insulating layer 212 and a cabling filling insulating layer 312 outside the control wire core conductor 111, the power wire core conductor 211 and the cabling filling conductor 311 by adopting a steam continuous vulcanization process;
step four: preparing a control wire core 100, a power wire core 200 and a cabling filler 300, and cabling the three into a cable core; talcum powder is uniformly coated outside the cable core, namely outside the control wire core 100 and the power wire core 200, the cabling pitch is 770-820 mm, and the outer diameter of the cable core after cabling is not more than 51.5mm;
step five: an inner liner 400, a reinforcing layer 500, and an outer sheath 600 are sequentially formed at the core. Specifically, the extrusion type inner liner 400 is adopted, the thickness of the thinnest point of the inner liner 400 is 1.6mm, and the average thickness is 2.0mm; the outer diameter is not more than 56.5mm; then, a reinforcing layer 500 is woven by adopting 1 twisted 1500D aramid fiber yarn per spindle outside the lining layer 400, so that the overall tensile strength of the cable is enhanced, the service life of the cable sheath is prolonged, and the weaving density is controlled between 30% and 40%; finally extruding an outer sheath 600 outside the reinforcing layer 500, extruding the outer sheath 600 by adopting a 150-sulfur continuous machine, wherein the outer sheath 600 is made of a high-strength high-tearing-resistance silicon rubber mixture, adopting cold extrusion, and controlling the steam pressure of a vulcanizing tube to be 15MPa and the linear speed to be 3-5 m/min; the test indexes after the extrusion of the outer sheath 600 are as follows: the thinnest point of the thickness of the outer sheath 9 is 5.5mm, the average thickness is 6.6mm, the outer diameter of the cable after the outer sheath is extruded is not more than 70.0mm, the strength is not less than 8.0MPa, and the elongation at break is not less than 300%; the thermal extension is not more than 200%.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (6)
1. The high temperature resistant metallurgical vehicle-mounted flexible cable is characterized by comprising:
three control wire cores (100); each control wire core (100) consists of a control wire core insulating wire core (110), a multimode optical fiber (120) and a control wire core Mylar tape (130);
three power wire cores (200); each power wire core (200) is formed by a power wire core insulating wire core (210), a power wire core filling layer (220) and a power wire core Mylar (230);
a cabling filler (300); the cable is arranged between the control wire core (100) and the power wire core (200) and consists of a cable-forming filling insulating wire core (310) and a cable-forming filling layer (320);
an inner liner (400); extruding and wrapping the control wire core (100) and the power wire core (200);
a reinforcing layer (500); is arranged outside the inner liner (400);
an outer sheath (600); is arranged outside the reinforcing layer (500);
each control wire core (100) comprises five control wire core insulation wire cores (110), and each control wire core insulation wire core (110) consists of a control wire core conductor (111) and a control wire core insulation layer (112); five control wire core insulating wire cores (110) are tangent in pairs; the multimode optical fibers (120) are arranged at gaps among the five control wire core insulating wire cores (110) and are tangent to the five control wire core insulating wire cores (110); the control wire core mailer (130) is wrapped outside the five control wire core insulating wire cores (110);
each power wire core (200) comprises two power wire core insulation wire cores (210), and each power wire core insulation wire core (210) consists of a power wire core conductor (211) and a power wire core insulation layer (212); the power wire core filling layer (220) and the power wire core mailer (230) are sequentially arranged outside the two power wire core insulating wire cores (210);
the cabling filling insulation wire core (310) consists of a cabling filling conductor (311) and a cabling filling insulation layer (312); the cabling filler conductor (311) and the cabling filler insulating layer (312) are consistent with the power wire core conductor (211) and the power wire core insulating layer (212);
the three power wire cores (200) are arranged at intervals of 120 degrees, the three control wire cores (100) are respectively arranged between the two power wire cores (200), and the adjacent power wire cores (200) are tangent to the adjacent control wire cores (100); the cabling filling insulating wire core (310) is tangent to the three power wire cores (200); the control wire core conductors (111) are formed by layering 7 strands of copper wires, each strand of copper wires comprises 20 copper wires with the wire diameter of 0.145mm, 1 copper foil wire is added into each strand for reinforcement during bunching, and the 7 strands of copper wires are stranded in the same direction according to a 1+6 structure; the pitch is 40-50 mm, and the outer diameter of the control wire core conductor (111) after stranding is not more than 2.3mm;
the twisting pitch of the five control wire core insulating wire cores (110) is 140-160 mm.
2. The pyrometallurgical onboard flexible cable of claim 1, wherein:
the power wire core conductor (211) and the power wire core conductor (211) are stranded by 37 strands of copper wires in a layering manner, each strand of copper wires comprises 42 copper wires with the wire diameter of 0.195mm, and the 37 strands of copper wires are stranded in the same direction according to a structure of 1+6+12+18; the pitch of the inner layer is 50-60 mm, the pitch of the outer layer is 60-75 mm, and the outer diameter of the power wire core conductor (211) after twisting are not more than 7.3mm.
3. The pyrometallurgical onboard flexible cable of claim 1, wherein:
the control wire core conductor (111), the power wire core conductor (211) and the power wire core conductor (211) are all 6 th annealed soft round copper conductors conforming to the regulations in EN 60288;
the control wire core insulating layer (112), the power wire core insulating layer (212), the cabling filling insulating layer (312) and the outer sheath (600) are made of novel flame-retardant environment-friendly silica gel mixture which meets the EN50382 standard and the EI111 standard.
4. The pyrometallurgical onboard flexible cable of claim 3, wherein:
the thinnest point of the control wire core insulating layer (112) is 0.71mm, and the average thickness is 0.9mm; the outer diameter of the control wire core insulating wire core (110) is not more than 11.5mm;
the outer diameters of the power wire core insulating wire core (210) and the cabling filling insulating wire core (310) are not more than 21.0mm;
the three control wire cores (100), the three power wire cores (200) and the cabling filler (300) are stranded into a cable, the cabling pitch is 770-820 mm, and the outer diameter is not more than 51.5mm;
the lining layer (400) is an extrusion type lining layer; the thickness of the thinnest point is 1.6mm, and the average thickness is 2.0mm; extruding the inner liner (400) to an outer diameter no greater than 56.5mm;
the external diameter of the high-temperature-resistant metallurgical vehicle-mounted flexible cable is not more than 70.0mm.
5. The pyrometallurgical onboard flexible cable of claim 4, wherein:
the wrapping lap rate of the control wire core Mylar (130) and the power wire core Mylar (230) is 10-15%;
the reinforcing layer (500) is formed by braiding 1 strand of 1500D twisted aramid yarn per spindle, the braiding density is 30-40%, and the braiding angle is 50-60 degrees.
6. The production process of the high-temperature-resistant metallurgical vehicle-mounted flexible cable is characterized by comprising the following steps of:
step one: determining the cable construction of claim 5;
step two: preparing a control wire core conductor (111), a power wire core conductor (211) and a cabling filling conductor (311);
step three: extruding a control wire core insulating layer (112), a power wire core insulating layer (212) and a cabling filling insulating layer (312) outside the control wire core conductor (111), the power wire core conductor (211) and the cabling filling conductor (311) respectively by adopting a steam continuous vulcanization process;
step four: preparing a control wire core (100), a power wire core (200) and a cabling filler (300), and cabling the three into a cable core;
step five: an inner liner layer (400), a reinforcing layer (500) and an outer sheath (600) are formed in sequence on the cable core.
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| CN201911030212.3A CN110675984B (en) | 2019-10-28 | 2019-10-28 | High-temperature-resistant metallurgical vehicle-mounted flexible cable and production process thereof |
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| JP2002214490A (en) * | 2001-01-15 | 2002-07-31 | Yazaki Corp | Optical fiber composite power cable |
| CN103903806A (en) * | 2014-03-05 | 2014-07-02 | 安徽华峰电缆集团有限公司 | Flame-retardant power cable |
| CN205751685U (en) * | 2016-06-29 | 2016-11-30 | 远东电缆有限公司 | A kind of wisdom energy type shielding rubber jacketed flexible cable for coal mining machine |
| CN209357485U (en) * | 2019-04-11 | 2019-09-06 | 河北华通线缆集团股份有限公司 | A kind of three-in-one middle pressure rubber set flat cable |
| CN210805305U (en) * | 2019-10-28 | 2020-06-19 | 远东电缆有限公司 | High-temperature-resistant metallurgical vehicle-mounted flexible cable |
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2019
- 2019-10-28 CN CN201911030212.3A patent/CN110675984B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002214490A (en) * | 2001-01-15 | 2002-07-31 | Yazaki Corp | Optical fiber composite power cable |
| CN103903806A (en) * | 2014-03-05 | 2014-07-02 | 安徽华峰电缆集团有限公司 | Flame-retardant power cable |
| CN205751685U (en) * | 2016-06-29 | 2016-11-30 | 远东电缆有限公司 | A kind of wisdom energy type shielding rubber jacketed flexible cable for coal mining machine |
| CN209357485U (en) * | 2019-04-11 | 2019-09-06 | 河北华通线缆集团股份有限公司 | A kind of three-in-one middle pressure rubber set flat cable |
| CN210805305U (en) * | 2019-10-28 | 2020-06-19 | 远东电缆有限公司 | High-temperature-resistant metallurgical vehicle-mounted flexible cable |
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| CN110675984A (en) | 2020-01-10 |
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