CN113192706A - Double-layer co-extrusion insulation irradiation cross-linking flame-retardant long-life power cable - Google Patents
Double-layer co-extrusion insulation irradiation cross-linking flame-retardant long-life power cable Download PDFInfo
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- CN113192706A CN113192706A CN202110449725.9A CN202110449725A CN113192706A CN 113192706 A CN113192706 A CN 113192706A CN 202110449725 A CN202110449725 A CN 202110449725A CN 113192706 A CN113192706 A CN 113192706A
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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
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
- H01B13/141—Insulating conductors or cables by extrusion of two or more insulating layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/002—Combinations of extrusion moulding with other shaping operations combined with surface shaping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/025—General arrangement or layout of plant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/355—Conveyors for extruded articles
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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
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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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
- H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
- H01B13/2693—After-treatment
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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
- H01B7/02—Disposition of insulation
- H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
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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
- H01B7/1875—Multi-layer sheaths
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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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
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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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
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Abstract
The invention discloses a double-layer co-extrusion insulation irradiation cross-linking flame-retardant power cable with long service life, which comprises a stranded copper conductor, a cross-linked insulation material, a glass fiber filler, a flame-retardant tape winding layer and a polyolefin sheath, wherein the cross-linked insulation material is wrapped on the outer surface of the stranded copper conductor, the number of the cross-linked insulation material is two, the flame-retardant tape winding layer is wrapped on the outer surface of the cross-linked insulation material, the glass fiber filler is filled between the cross-linked insulation material and the flame-retardant tape winding layer, and the polyolefin sheath is wrapped on the outer surface of the flame-retardant tape winding layer; the double-layer co-extrusion insulation irradiation cross-linking flame-retardant power cable with long service life can perform double-layer co-extrusion operation on a cross-linking insulation material, so that the power cable can extrude a double-layer insulation layer at one time, a double-protection structure is formed on the surface of the power cable, the safety of the power cable in use is improved, and meanwhile, the power cable can adjust parameters during double-layer co-extrusion operation according to the caliber of the cable, and the flexibility of the power cable in processing is improved.
Description
Technical Field
The invention belongs to the field of power cables, and particularly relates to a double-layer co-extrusion insulation irradiation crosslinking flame-retardant power cable with long service life.
Background
The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater.
The traditional power cable adopts a single-layer cross-linked insulating material as a joint edge protective layer, so that the cable does not have a double-layer protective structure, a user cannot extrude the double-layer cross-linked insulating material as an insulating protective layer at one time in a production link, and the safety of the power cable in use is reduced; secondly, the surface of the traditional power cable is not subjected to irradiation treatment, so that the traditional power cable has poor performance, and the temperature resistance, wear resistance and flame retardance of the power cable are reduced; meanwhile, when the traditional power cable is subjected to double-layer co-extrusion operation of the insulating layer, the extrusion thickness of the double-layer insulating layer can not be flexibly adjusted according to use requirements, so that the flexibility of the traditional power cable in the double-layer co-extrusion operation of the insulating layer is reduced, and certain adverse effects are brought to a user.
Disclosure of Invention
In order to overcome the defects that the traditional power cable adopts a single-layer crosslinking insulating material as a joint edge protective layer, so that the cable does not have a double-layer protective structure, a user cannot extrude the double-layer crosslinking insulating material as an insulating protective layer at one time in a production link, and the safety of the power cable in use is reduced; secondly, the surface of the traditional power cable is not subjected to irradiation treatment, so that the traditional power cable has poor performance, and the temperature resistance, wear resistance and flame retardance of the power cable are reduced; meanwhile, when the traditional power cable is subjected to double-layer co-extrusion operation of the insulating layer, the extrusion thickness of the double-layer insulating layer can not be flexibly adjusted according to the use requirement, so that the flexibility of the traditional power cable in the double-layer co-extrusion operation of the insulating layer is reduced.
The purpose of the invention is realized by the following technical scheme:
a double-layer co-extrusion insulation irradiation cross-linking flame-retardant power cable with a long service life comprises a stranded copper conductor, a cross-linked insulation material, a glass fiber filler, a flame-retardant tape-wound covering layer and a polyolefin sheath, wherein the cross-linked insulation material wraps the outer surface of the stranded copper conductor, the number of the cross-linked insulation material is two, the flame-retardant tape-wound covering layer is wound on the outer surface of the cross-linked insulation material, the glass fiber filler is filled between the cross-linked insulation material and the flame-retardant tape-wound covering layer, and the polyolefin sheath wraps the outer surface of the flame-retardant tape-wound covering layer;
the power cable comprises the following processing steps:
drawing a copper rod to obtain a copper wire, manufacturing the copper wire into a stranded copper conductor through stranded equipment, penetrating the stranded copper conductor through a second stud of extrusion equipment and a through hole of the first stud, and pouring a cross-linked insulating material into a first material box and a second material box of the extrusion equipment;
secondly, driving a second stud and a first stud through two groups of motors, wrapping a layer of cross-linked insulating material on the surface of the stranded copper conductor through an extrusion ring by using the second stud, cooling the layer of cross-linked insulating material after passing through a cooling pipe, completing double-layer co-extrusion of the cross-linked insulating material by using the rotation of the first stud, covering the double-layer cross-linked insulating material on the surface of the stranded copper conductor, and outputting a cable through a material conveying frame;
and step three, performing irradiation operation on the surface of the cross-linked insulating material through an electron accelerator, filling glass fiber filler on the inner side of the flame-retardant tape-wound cladding, and performing irradiation operation on the surface of the polyolefin sheath.
As a further technical scheme of the invention, the cross-linked insulating material is of a double-layer structure, and the cross-sectional thickness of the cross-linked insulating material at the outer layer is larger than that of the cross-linked insulating material at the inner layer.
As a further technical scheme of the invention, the number of the stranded copper conductors is five, and the stranded copper conductors are formed by stranding a plurality of groups of copper wires.
As a further technical scheme of the invention, the outer surfaces of the cross-linked insulating material and the polyolefin sheath are subjected to irradiation treatment by an electron accelerator, and the thickness of the polyolefin sheath is greater than that of the cross-linked insulating material.
As a further technical scheme of the invention, in the third step, the flame-retardant tape winding cladding is wound on the surfaces of the five groups of cross-linked insulating materials by using winding equipment, and the polyolefin sheath is extruded on the surface of the flame-retardant tape winding cladding by using a single-layer extruder.
As a further technical scheme of the present invention, the concrete installation steps of the material extruding ring are pushing the telescopic bolt to move the telescopic bolt into the inner side of the telescopic sheathing, pulling the upper part of the telescopic sheathing to pull the telescopic sheathing out of the inner side of the splicing sheathing, clamping the material extruding ring in the middle of the telescopic sheathing, simultaneously inserting a fixing pin into the side edge of the telescopic sheathing to insert the fixing pin into the circular notch, fixing the material extruding ring and the telescopic sheathing, and sleeving the telescopic sheathing on the inner side of the splicing sheathing to butt the positioning pin and the positioning slot.
As a further technical scheme, the material conveying frame comprises the specific operation steps that the rotating handle is driven to match with the threaded rod, the second rolling rod and the material conveying frame are loosened, the second rolling rod is pulled by the lifting sliding groove, the distance between the second rolling rod and the first rolling rod is adjusted, a cable penetrates through the second rolling rod and the first rolling rod, the first rolling rod is driven by the motor, and the cable is output.
As a further technical scheme, the extrusion equipment comprises a box body base, a cooling pipe and a material conveying frame, wherein a first material box is fixedly arranged on the outer surface of the upper end of the box body base, a second material box is fixedly arranged on one side, close to the first material box, of the outer surface of the upper end of the box body base, material conveying plates are movably arranged in the middle positions of the inner sides of the first material box and the second material box, the material conveying plates are used for conveying raw materials, the cooling pipe is fixedly sleeved on the middle position of the inner side of the box body base, a water storage box is fixedly arranged on the inner side of the box body base, close to the lower portion of the cooling pipe, a water inlet pipe is arranged between the water storage box and the cooling pipe, and a water outlet pipe is arranged on one side, close to the water inlet pipe, between the water storage box and the cooling pipe;
the inner part of the box body base is fixedly provided with motors at two sides close to the water storage tank, the outer surface of one end of the box body base is fixedly provided with a pay-off rack, the inner side of the other end of the box body base is movably provided with a take-up stand, the feeding stand is fixedly arranged at the upper position of the outer surface of the other end of the box body base, the upper part of the box body base is fixedly provided with a spray stand at one side close to the feeding stand, the feeding stand and the spray stand are both of a cuboid frame structure, the inner side of the upper part of the box body base is movably sleeved with two groups of telescopic sleeve plates, the inner part of the box body base is movably provided with a second stud, a first stud is movably arranged at one side close to the second stud in the box body base, a splicing sleeve plate is fixedly arranged at one end close to the second stud and the first stud in the box body base, and a transmission chain is arranged at one end of the motor, the second stud, the first stud and the motor are connected through transmission chain, the telescopic sleeve plate is movably sleeved on the inner side of the splicing sleeve plate, a positioning bolt is fixedly installed in the middle of the lower end of the telescopic sleeve plate, a positioning slot is formed in the middle of the inner side of the splicing sleeve plate, the positioning bolt and the splicing sleeve plate are fixedly butted through the positioning slot, and butt-joint bolt plates are fixedly installed on the outer surfaces of the two sides of the splicing sleeve plate;
the cooling pipe is characterized in that an extruding ring is fixedly sleeved at the middle position of the inner side of the telescopic sleeve plate, a round notch is formed in the inner surface of the side edge of the extruding ring, a fixing pin is movably sleeved on the inner surface of the side edge of the telescopic sleeve plate, the round notch and the telescopic sleeve plate are in butt joint through the fixing pin, two groups of telescopic bolts are movably sleeved on the inner side of the upper part of the telescopic sleeve plate, the whole structure of the cooling pipe is a cylindrical hollow structure, a spraying pipe is fixedly installed at the upper position of the inner side of the cooling pipe, the spraying pipe is in through connection with a water inlet pipe, and a water collecting tank is formed in the inner side of the cooling pipe, which is positioned below the spraying pipe;
the improved water conveying device is characterized in that a water collecting tank and a water outlet pipe are connected in a through mode, a first rolling rod is movably mounted on the inner side of the conveying frame, a second rolling rod is movably mounted on the inner side, close to the first rolling rod, of the inner side of the conveying frame, two groups of fixing clamping plates are fixedly mounted on the outer surface of the lower end of the conveying frame, locating sleeves are movably sleeved on the inner sides of the two ends of the second rolling rod, the conveying frame and the second rolling rod are movably connected through the locating sleeves, a butt joint rotating shaft is mounted on one side of each locating sleeve, a rotating handle is movably mounted on the other side of each locating sleeve, the locating sleeves and the rotating handle are in butt joint through threaded rods, lifting sliding grooves are formed in the inner surfaces of the two sides of the conveying frame, a guide rolling rod is movably mounted on the inner side of the upper portion of the box body base, and threading holes are formed in the middle of cooling pipes.
The invention has the beneficial effects that:
1. by arranging the first stud and the second stud, when a user processes the double-layer co-extrusion insulation irradiation cross-linked flame-retardant power cable with long service life, the user can pour the cross-linked insulation material into the first feed box and the second feed box respectively, the output operation of the cross-linked insulation material is completed by utilizing the material conveying plates of the first feed box and the second feed box, a part of the cross-linked insulation material is conveyed to the second stud through the second feed box, the second stud is driven by a motor in cooperation with a transmission chain to extrude the cross-linked insulation material, a layer of the cross-linked insulation material covers the surface of the stranded copper conductor in cooperation with the movement of the stranded copper conductor, the layer of the cross-linked insulation material is cooled by a cooling pipe, the cross-linked insulation material is moved to the first stud by the movement of the stranded copper conductor, the cross-linked insulation material is extruded by utilizing the first stud, and the double-layer covering operation of the stranded copper conductor is completed by the cross-linked insulation material, utilize the setting of first double-screw bolt and second double-screw bolt, drive second double-screw bolt and first double-screw bolt respectively through two sets of motors, utilize the second double-screw bolt to wrap up one deck cross-linking insulating material on the surface of transposition copper conductor through crowded material ring, pass and cool off one deck cross-linking insulating material behind the cooling tube, utilize the rotation of first double-screw bolt, the completion is to the double-deck crowded bilayer of cross-linking insulating material altogether, thereby make this power cable can once only extrude double-deck insulating layer, make power cable's surface form dual protection structure, the security when promoting its use.
2. The crosslinking insulating material and the polyolefin sheath are irradiated, high-energy electron beams generated by an electron accelerator are utilized to bombard the crosslinking insulating material and the polyolefin sheath, a high-molecular chain is broken, each broken point becomes a free radical which is unstable and needs to be recombined with each other, and the original chain-shaped molecular structure is changed into a three-dimensional reticular molecular structure after recombination to form crosslinking.
3. Through the arrangement of the material conveying frame, when a user processes and operates the double-layer co-extrusion insulation irradiation cross-linking flame-retardant power cable with long service life, the user can drive the rotating handle to be matched with the threaded rod, the second rolling rod and the material conveying frame are loosened, the second rolling rod is pulled by utilizing the lifting chute, the distance between the second rolling rod and the first rolling rod is adjusted, cables with different calibers can be placed between the second rolling rod and the first rolling rod by adjusting the distance between the second rolling rod and the first rolling rod, meanwhile, the moving second rolling rod is locked and fixed by utilizing the rotating handle to be matched with the threaded rod, the cables penetrate between the second rolling rod and the first rolling rod, the first rolling rod is driven by the motor to output the cables, the arrangement of the material conveying frame is utilized, the adjustment of the second rolling rod is matched, so that the output operation of the power cables with different calibers can be completed, the flexibility of the power cable during processing is improved.
4. By arranging the extrusion ring, when a user processes and operates the double-layer co-extrusion insulation irradiation cross-linking flame-retardant power cable with long service life, the user pushes the telescopic bolt to move the telescopic bolt into the inner side of the telescopic sleeve plate, pulls the upper part of the telescopic sleeve plate to draw the telescopic sleeve plate out from the inner side of the splicing sleeve plate, clamps the extrusion ring in the middle of the telescopic sleeve plate, simultaneously inserts the fixing pin into the side edge of the telescopic sleeve plate to insert the fixing pin into the circular groove opening, fixes the extrusion ring and the telescopic sleeve plate, completes the splicing type fixing operation of the extrusion ring, sleeves the telescopic sleeve plate on the inner side of the splicing sleeve plate, enables the positioning pin to be butted with the positioning slot, enables the telescopic sleeve plate and the splicing sleeve plate to be mutually fixed, utilizes the extrusion ring to be matched with the telescopic sleeve plate, and flexibly adjusts the extrusion caliber of the double-layer co-extrusion operation of the power cable according to the use requirement, the double-layer co-extrusion device can complete double-layer co-extrusion operation of sheaths with different calibers, and improves the flexibility of the double-layer co-extrusion operation.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is an overall structure diagram of a double-layer co-extruded insulation irradiation cross-linking flame-retardant long-life power cable according to the present invention;
FIG. 2 is an overall structural view of an extrusion apparatus in the present invention;
FIG. 3 is an internal structural view of an extrusion apparatus in the present invention;
FIG. 4 is an overall view of the telescopic deck of the present invention;
FIG. 5 is an internal structural view of a cooling pipe in the present invention;
FIG. 6 is an overall configuration view of the material transporting frame in the present invention;
fig. 7 is a plan view of the second roll bar in the present invention.
In the figure: 1. an electric motor; 2. a water storage tank; 3. a water inlet pipe; 4. a base of the box body; 5. a take-up stand; 6. a guide roller; 7. a material conveying frame; 8. a spray rack; 9. a telescopic sleeve plate; 10. a first bin; 11. a cooling tube; 12. a second bin; 13. a material conveying plate; 14. a pay-off rack; 15. a drive chain; 16. a water outlet pipe; 17. a first stud; 18. splicing sleeve plates; 19. a second stud; 20. positioning the slot; 21. a circular notch; 22. a fixing pin; 23. butt-joint bolt plates; 24. a telescopic bolt; 25. an extrusion ring; 26. positioning a bolt; 27. a water collection tank; 28. threading holes; 29. a shower pipe; 30. a first roller bar; 31. a second roller bar; 32. fixing the clamping plate; 33. a lifting chute; 34. butting the rotating shafts; 35. a positioning sleeve; 36. rotating the grip; 37. a threaded rod; 38. stranding a copper conductor; 39. crosslinking the insulating material; 40. glass fiber filler; 41. a flame retardant tape-wrapped cladding; 42. a polyolefin jacket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-7, a double-layer co-extrusion insulation irradiation cross-linking flame-retardant power cable with long service life comprises a stranded copper conductor 38, a cross-linked insulation material 39, a glass fiber filler 40, a flame-retardant tape-wound cladding 41 and a polyolefin sheath 42, wherein the cross-linked insulation material 39 is wrapped on the outer surface of the stranded copper conductor 38, the number of the cross-linked insulation material 39 is two, the flame-retardant tape-wound cladding 41 is wrapped on the outer surface of the cross-linked insulation material 39, the glass fiber filler 40 is filled between the cross-linked insulation material 39 and the flame-retardant tape-wound cladding 41, and the polyolefin sheath 42 is wrapped on the outer surface of the flame-retardant tape-wound cladding 41;
the power cable comprises the following processing steps:
step one, obtaining a copper wire after drawing a copper rod, manufacturing the copper wire into a stranded copper conductor 38 through a stranding device, enabling the stranded copper conductor 38 to penetrate through holes of a second stud 19 and a first stud 17 of an extrusion device, and pouring a cross-linked insulating material 39 into a first material box 10 and a second material box 12 of the extrusion device;
secondly, driving a second stud 19 and a first stud 17 through two groups of motors 1, wrapping a layer of cross-linked insulating material 39 on the surface of the stranded copper conductor 38 through an extrusion ring 25 by using the second stud 19, cooling the layer of cross-linked insulating material 39 after passing through a cooling pipe 11, completing double-layer co-extrusion of the cross-linked insulating material 39 by using the rotation of the first stud 17, covering the double-layer cross-linked insulating material 39 on the surface of the stranded copper conductor 38, and outputting the cable through a material conveying frame 7;
and step three, performing irradiation operation on the surface of the cross-linked insulating material 39 through an electron accelerator, filling the glass fiber filler 40 on the inner side of the flame-retardant tape-wound cladding 41, and performing irradiation operation on the surface of the polyolefin sheath 42.
The cross-linked insulation material 39 is a double-layer structure, and the cross-sectional thickness of the outer-layer cross-linked insulation material 39 is larger than that of the inner-layer cross-linked insulation material 39.
The number of the stranded copper conductors 38 is five, and the stranded copper conductors 38 are made by stranding sets of copper wires.
The outer surfaces of the crosslinked insulating material 39 and the polyolefin sheath 42 are both subjected to irradiation treatment by an electron accelerator, and the thickness of the polyolefin sheath 42 is larger than that of the crosslinked insulating material 39.
In the third step, the flame-retardant tape winding cladding 41 is wound on the surface of the five groups of cross-linked insulating materials 39 by using a winding device, and the polyolefin sheath 42 is extruded on the surface of the flame-retardant tape winding cladding 41 by a single-layer extruder.
The concrete installation steps of the material extruding ring 25 are that the material extruding ring 24 is pushed, the material extruding ring 24 is moved into the inner side of the telescopic sleeve plate 9, the upper part of the telescopic sleeve plate 9 is pulled, the telescopic sleeve plate 9 is taken out from the inner side of the splicing sleeve plate 18, the material extruding ring 25 is clamped in the middle of the telescopic sleeve plate 9, meanwhile, the fixing pin 22 is inserted into the side edge of the telescopic sleeve plate 9, the fixing pin 22 is inserted into the circular notch 21, the material extruding ring 25 and the telescopic sleeve plate 9 are fixed, the telescopic sleeve plate 9 is sleeved on the inner side of the splicing sleeve plate 18, and the positioning pin 26 and the positioning slot 20 are butted.
The concrete operation steps of the material conveying frame 7 are that the handle 36 is rotated to match the threaded rod 37, the second rolling rod 31 and the material conveying frame 7 are loosened, the lifting chute 33 is utilized to pull the second rolling rod 31, the distance between the second rolling rod 31 and the first rolling rod 30 is adjusted, a cable passes through the second rolling rod 31 and the first rolling rod 30, the first rolling rod 30 is driven by the motor, and the cable is output
The extrusion equipment comprises a box body base 4, a cooling pipe 11 and a material conveying frame 7, wherein a first material box 10 is fixedly arranged on the outer surface of the upper end of the box body base 4, a second material box 12 is fixedly arranged on one side, close to the first material box 10, of the outer surface of the upper end of the box body base 4, material conveying plates 13 are movably arranged at the middle positions of the inner sides of the first material box 10 and the second material box 12 respectively, the material conveying plates 13 are used for conveying raw materials, the cooling pipe 11 is fixedly sleeved at the middle position of the inner side of the box body base 4, a water storage box 2 is fixedly arranged on the inner side, close to the lower part of the cooling pipe 11, of the box body base 4, a water inlet pipe 3 is arranged between the water storage box 2 and the cooling pipe 11, a water outlet pipe 16 is arranged on one side, close to the water inlet pipe 3, of the inner part of the box body base 4, motors 1 are fixedly arranged on two sides, close to the water storage box 2, and a pay-off frame 14 is fixedly arranged on the outer surface of one end of the box body base 4, a take-up stand 5 is movably arranged on the inner side of the other end of the box body base 4, and a material conveying stand 7 is fixedly arranged at the upper part of the outer surface of the other end of the box body base 4;
a spray rack 8 is fixedly arranged on one side of the upper part of the box body base 4 close to the material conveying rack 7, the material conveying rack 7 and the spray rack 8 are both of a cuboid frame structure, two groups of telescopic sleeve plates 9 are movably sleeved on the inner side of the upper part of the box body base 4, a second stud 19 is movably arranged in the box body base 4, a first stud 17 is movably arranged on one side of the inner part of the box body base 4 close to the second stud 19, a splicing sleeve plate 18 is fixedly arranged at one end of the inner part of the box body base 4 close to the second stud 19 and the first stud 17, a transmission chain 15 is arranged at one end of the motor 1, the second stud 19, the first stud 17 and the motor 1 are in transmission connection through the transmission chain 15, the telescopic sleeve plates 9 are movably sleeved on the inner side of the splicing sleeve plate 18, a positioning bolt 26 is fixedly arranged at the middle position of the lower end of the telescopic sleeve plate 9, and a positioning slot 20 is arranged at the middle position of the inner side of the splicing sleeve plate 18, the positioning bolt 26 and the splicing sleeve plate 18 are fixedly butted and connected through the positioning slot 20, the outer surfaces of two sides of the splicing sleeve plate 18 are fixedly provided with butt joint bolt plates 23, the middle position of the inner side of the telescopic sleeve plate 9 is fixedly sleeved with an extruding ring 25, the inner surface of the side edge of the extruding ring 25 is provided with a circular notch 21, the inner surface of the side edge of the telescopic sleeve plate 9 is movably sleeved with a fixed pin 22, the circular notch 21 and the telescopic sleeve plate 9 are butted through the fixed pin 22, the inner side of the upper part of the telescopic sleeve plate 9 is movably sleeved with two groups of telescopic bolts 24, the integral structure of the cooling pipe 11 is a cylindrical hollow structure, the upper position of the inner side of the cooling pipe 11 is fixedly provided with a spray pipe 29, the spray pipe 29 is in through connection with the water inlet pipe 3, the inner side of the cooling pipe 11 is positioned below the spray pipe 29 and is provided with a water collecting tank 27, and the water collecting tank 27 is in through connection with the water outlet pipe 16;
the inboard movable mounting of defeated work or material rest 7 has first roll bar 30, the inboard upper portion movable mounting that is close to first roll bar 30 of defeated work or material rest 7 has second roll bar 31, the outer fixed surface of the lower extreme of defeated work or material rest 7 installs two sets of fixed cardboard 32, the locating sleeve 35 has been cup jointed in the equal activity in both ends inboard of second roll bar 31, pass through locating sleeve 35 swing joint between defeated work or material rest 7 and the second roll bar 31, butt joint pivot 34 is installed to one side of locating sleeve 35, the opposite side movable mounting of locating sleeve 35 has rotation handle 36, dock through threaded rod 37 between locating sleeve 35 and the rotation handle 36, lift spout 33 has all been seted up to the both sides internal surface of defeated work or material rest 7, the inboard movable mounting in upper portion of box base 4 has direction roll bar 6, through wires hole 28 has been seted up at the middle part of cooling tube 11.
The invention aims to provide a double-layer co-extrusion insulation irradiation crosslinking flame-retardant power cable with long service life, when in use, through arranging a first stud 17 and a second stud 19, when a user processes the double-layer co-extrusion insulation irradiation crosslinking flame-retardant power cable with long service life, the user can pour crosslinking insulation materials 39 into a first feed box 10 and a second feed box 12 respectively, finish the output operation of the crosslinking insulation materials 39 by utilizing a feed delivery plate 13 of the first feed box 10 and the second feed box 12, convey a part of the crosslinking insulation materials 39 to the second stud 19 through the second feed box 12, drive the second stud 19 through a motor 1 and a transmission chain 15, extrude the crosslinking insulation materials 39, and ensure that one layer of the crosslinking insulation materials 39 covers the surface of a stranded copper conductor 38 in cooperation with the movement of the stranded copper conductor 38, and cool the layer of the crosslinking insulation materials 39 through a cooling pipe 11, the twisted copper conductor 38 is moved to the first stud 17 through the movement of the twisted copper conductor 38, the cross-linked insulating material 39 is extruded by the first stud 17, the cross-linked insulating material 39 is enabled to complete double-layer covering operation on the twisted copper conductor 38, the second stud 19 and the first stud 17 are respectively driven by two groups of motors 1 through the arrangement of the first stud 17 and the second stud 19, the second stud 19 is utilized to wrap a layer of cross-linked insulating material 39 on the surface of the twisted copper conductor 38 through the extrusion ring 25, the cross-linked insulating material 39 is cooled after passing through the cooling pipe 11, double-layer co-extrusion of the cross-linked insulating material 39 is completed through the rotation of the first stud 17, and therefore the double-layer insulating layer can be extruded out of the power cable at one time, the surface of the power cable forms a double-protection structure, and the safety of the power cable in use is improved;
the crosslinking insulating material 39 and the polyolefin sheath 42 are irradiated, high-energy electron beams generated by an electron accelerator are utilized to bombard the crosslinking insulating material 39 and the polyolefin sheath 42, a macromolecular chain is broken, each broken point becomes a free radical which is unstable and needs to be recombined with each other, and the original chain-shaped molecular structure is changed into a three-dimensional reticular molecular structure to form crosslinking after recombination, so that the crosslinking mode not only improves the temperature resistance, wear resistance and flame retardant property of the power cable, but also plays a role in water blocking, and the cable has the characteristics of low smoke, zero halogen, flame retardance, fire resistance, high temperature resistance and the like;
by arranging the material conveying frame 7, when a user processes and operates the double-layer co-extrusion insulation irradiation cross-linking flame-retardant power cable with long service life, the user can drive the rotating handle 36 to cooperate with the threaded rod 37 to loosen the space between the second roller 31 and the material conveying frame 7, meanwhile, the lifting chute 33 is utilized to pull the second roller 31 to adjust the space between the second roller 31 and the first roller 30, the distance between the second roller 31 and the first roller 30 is adjusted, so that cables with different calibers can be placed between the second roller 31 and the first roller 30, meanwhile, the rotating handle 36 cooperates with the threaded rod 37 to lock and fix the moved second roller 31, the cables penetrate between the second roller 31 and the first roller 30, the first roller 30 is driven by the motor to output the cables, the arrangement of the material conveying frame 7 is utilized to cooperate with the adjustment of the second roller 31, so that the output operation of the power cables with different calibers can be completed, the flexibility of the power cable during processing is improved;
by arranging the extruding ring 25, when a user processes the double-layer co-extrusion insulation irradiation cross-linking flame-retardant power cable with long service life, the user pushes the telescopic bolt 24 to move the telescopic bolt 24 into the inner side of the telescopic sleeve plate 9, pulls the upper part of the telescopic sleeve plate 9 to draw the telescopic sleeve plate 9 out from the inner side of the splicing sleeve plate 18, clamps the extruding ring 25 in the middle of the telescopic sleeve plate 9, inserts the fixing pin 22 at the side edge of the telescopic sleeve plate 9 to insert the fixing pin 22 into the circular notch 21, fixes the extruding ring 25 and the telescopic sleeve plate 9, completes the splicing fixing operation of the extruding ring 25, sleeves the telescopic sleeve plate 9 at the inner side of the splicing sleeve plate 18, enables the positioning pin 26 and the positioning slot 20 to be butted, enables the telescopic sleeve plate 9 and the splicing sleeve plate 18 to be mutually fixed, utilizes the extruding ring 25 to be matched with the telescopic sleeve plate 9, and utilizes the matching replacement operation of the two groups of extruding rings 25, the power cable can flexibly adjust the extrusion aperture of the double-layer co-extrusion operation according to the use requirement, can complete the double-layer co-extrusion operation of sheaths with different apertures, and improves the flexibility of the double-layer co-extrusion operation.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. Preferred embodiments are not exhaustive of all the details of the embodiments. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The double-layer co-extrusion insulation irradiation cross-linking flame-retardant long-life power cable is characterized by comprising a stranded copper conductor (38), a cross-linked insulation material (39), a glass fiber filler (40), a flame-retardant tape-wound cladding (41) and a polyolefin sheath (42), wherein the cross-linked insulation material (39) wraps the outer surface of the stranded copper conductor (38), the number of the cross-linked insulation material (39) is two, the flame-retardant tape-wound cladding (41) is wound on the outer surface of the cross-linked insulation material (39), the glass fiber filler (40) is filled between the cross-linked insulation material (39) and the flame-retardant tape-wound cladding (41), and the polyolefin sheath (42) wraps the outer surface of the flame-retardant tape-wound cladding (41);
the power cable comprises the following processing steps:
drawing a copper rod to obtain a copper wire, manufacturing the copper wire into a stranded copper conductor (38) through stranded equipment, enabling the stranded copper conductor (38) to penetrate through a second stud (19) and a through hole of a first stud (17) of extrusion equipment, and pouring a cross-linked insulating material (39) into a first material box (10) and a second material box (12) of the extrusion equipment;
secondly, driving a second stud (19) and a first stud (17) through two groups of motors (1), wrapping a layer of cross-linked insulating material (39) on the surface of the stranded copper conductor (38) through an extrusion ring (25) by using the second stud (19), cooling the layer of cross-linked insulating material (39) after passing through a cooling pipe (11), completing double-layer co-extrusion of the cross-linked insulating material (39) by using the rotation of the first stud (17), covering the double-layer cross-linked insulating material (39) on the surface of the stranded copper conductor (38), and outputting the cable through a material conveying frame (7);
and step three, carrying out irradiation operation on the surface of the cross-linked insulating material (39) through an electron accelerator, filling glass fiber filler (40) in the inner side of the flame-retardant tape-wound cladding (41), and simultaneously carrying out irradiation operation on the surface of the polyolefin sheath (42).
2. The double-layer co-extrusion insulation irradiation crosslinking flame-retardant long-life power cable as claimed in claim 1, wherein the crosslinking insulation material (39) is of a double-layer structure, and the cross-sectional thickness of the crosslinking insulation material (39) at the outer layer is larger than that of the crosslinking insulation material (39) at the inner layer.
3. The double-layer co-extrusion insulation irradiation crosslinking flame-retardant long-life power cable as claimed in claim 1, wherein the number of the stranded copper conductors (38) is five, and the stranded copper conductors (38) are made by stranding a plurality of groups of copper wires.
4. The double-layer co-extrusion insulation irradiation crosslinking flame-retardant long-life power cable according to claim 1, characterized in that the outer surfaces of the crosslinking insulation material (39) and the polyolefin sheath (42) are both subjected to irradiation treatment by an electron accelerator, and the thickness of the polyolefin sheath (42) is larger than that of the crosslinking insulation material (39).
5. The double-layer co-extrusion insulation irradiation crosslinking flame-retardant long-life power cable according to claim 1, characterized in that in the third step, a wrapping device is used to wrap the flame-retardant tape wrapping layer (41) on the surface of five groups of crosslinking insulation materials (39), and a single-layer extruder is used to extrude the polyolefin sheath (42) on the surface of the flame-retardant tape wrapping layer (41).
6. The double-layer co-extrusion insulation irradiation crosslinking flame-retardant long-life power cable according to claim 1, wherein the specific installation steps of the extrusion ring (25) are as follows:
promote flexible tie (24), make flexible tie (24) immigration to the inboard of flexible lagging (9), the upper portion of the flexible lagging (9) of pulling, make flexible lagging (9) take out from the inboard of concatenation lagging (18), will crowd material ring (25) card at the middle part of flexible lagging (9), insert fixed pin (22) at the side of flexible lagging (9) simultaneously, make fixed pin (22) insert to circular notch (21), it is fixed to crowd material ring (25) and flexible lagging (9), cup joint flexible lagging (9) in the inboard of concatenation lagging (18), make location bolt (26) and positioning slot (20) dock.
7. The double-layer co-extrusion insulation irradiation crosslinking flame-retardant long-life power cable according to claim 1, wherein the specific operation steps of the material conveying frame (7) are as follows:
the driving rotation handle (36) is matched with the threaded rod (37), the second rolling rod (31) and the material conveying frame (7) are loosened, meanwhile, the second rolling rod (31) is pulled through the lifting sliding groove (33), the distance between the second rolling rod (31) and the first rolling rod (30) is adjusted, a cable penetrates through the second rolling rod (31) and the first rolling rod (30), the first rolling rod (30) is driven through the motor, and the cable is output.
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| CN202110449725.9A CN113192706A (en) | 2021-04-25 | 2021-04-25 | Double-layer co-extrusion insulation irradiation cross-linking flame-retardant long-life power cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242350A (en) * | 2021-12-17 | 2022-03-25 | 湖南省冷水滩电线电缆股份有限公司 | High-temperature-resistant photovoltaic cable manufacturing method and cable processing structure |
| CN114334238A (en) * | 2021-12-31 | 2022-04-12 | 福建成田科技有限公司 | Double-layer co-extrusion insulation type B1-grade flame-retardant cable |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5912436A (en) * | 1996-08-09 | 1999-06-15 | Servicios Condumex S.A. De C.V. | Co-extruded electric conductor cable in three insulating layers of low humidity absorption electric method low smoke and toxic gas emission flame retardant |
| CN102347109A (en) * | 2011-06-24 | 2012-02-08 | 四川明星电缆股份有限公司 | Manufacture method for low-voltage electric power cable used for nuclear power station |
| CN103578660A (en) * | 2013-11-05 | 2014-02-12 | 四川明星电缆股份有限公司 | Method for manufacturing low-voltage power cable used in third-generation nuclear power station containment vessel |
| CN104795178A (en) * | 2014-10-11 | 2015-07-22 | 安徽明星电缆有限公司 | Preparation technology for rail transit vehicle cable |
| CN106024169A (en) * | 2016-08-12 | 2016-10-12 | 中天科技装备电缆有限公司 | High-flame-retardant, long-service-life and high-load low-smoke halogen-free building cloth wire and preparing technology |
| CN205751669U (en) * | 2016-06-28 | 2016-11-30 | 山东宝世达电缆有限公司 | A kind of long-life, nontoxic low cigarette, high flame-retardant cable |
| CN205943485U (en) * | 2016-08-17 | 2017-02-08 | 江苏亨通电力电缆有限公司 | Double -deck crowded insulating radiation cross -linking does not altogether have steamed low fire -retardant power cable of cigarette |
| CN106448796A (en) * | 2016-10-28 | 2017-02-22 | 济南瑞通铁路电务有限责任公司 | Flame-retardant and fire-resistant direct current power cable applied to rail transit and production system and method |
| CN107274980A (en) * | 2017-07-07 | 2017-10-20 | 浙江中兴电缆有限公司 | A kind of double-layer coextrusion insulated irradiation crosslinking halogen-free low-smoke and flame retardant electric wire and preparation method |
| CN109559852A (en) * | 2018-11-16 | 2019-04-02 | 尚纬股份有限公司 | A kind of manufacturing method of 1E grades of K3 class cables of used in nuclear power station high fire-retardance low release |
| CN111341491A (en) * | 2020-04-03 | 2020-06-26 | 兰州众邦电线电缆集团有限公司 | Waterproof environment-friendly cable with long service life and preparation method thereof |
| CN112259282A (en) * | 2020-09-14 | 2021-01-22 | 中天科技装备电缆有限公司 | Photoelectric composite flexible cable, extrusion equipment for producing same and preparation method thereof |
| CN212434278U (en) * | 2020-06-22 | 2021-01-29 | 浙江万马股份有限公司 | Durable insulation irradiation crosslinking halogen-free low-smoke high-flame-retardant safety wire |
-
2021
- 2021-04-25 CN CN202110449725.9A patent/CN113192706A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5912436A (en) * | 1996-08-09 | 1999-06-15 | Servicios Condumex S.A. De C.V. | Co-extruded electric conductor cable in three insulating layers of low humidity absorption electric method low smoke and toxic gas emission flame retardant |
| CN102347109A (en) * | 2011-06-24 | 2012-02-08 | 四川明星电缆股份有限公司 | Manufacture method for low-voltage electric power cable used for nuclear power station |
| CN103578660A (en) * | 2013-11-05 | 2014-02-12 | 四川明星电缆股份有限公司 | Method for manufacturing low-voltage power cable used in third-generation nuclear power station containment vessel |
| CN104795178A (en) * | 2014-10-11 | 2015-07-22 | 安徽明星电缆有限公司 | Preparation technology for rail transit vehicle cable |
| CN205751669U (en) * | 2016-06-28 | 2016-11-30 | 山东宝世达电缆有限公司 | A kind of long-life, nontoxic low cigarette, high flame-retardant cable |
| CN106024169A (en) * | 2016-08-12 | 2016-10-12 | 中天科技装备电缆有限公司 | High-flame-retardant, long-service-life and high-load low-smoke halogen-free building cloth wire and preparing technology |
| CN205943485U (en) * | 2016-08-17 | 2017-02-08 | 江苏亨通电力电缆有限公司 | Double -deck crowded insulating radiation cross -linking does not altogether have steamed low fire -retardant power cable of cigarette |
| CN106448796A (en) * | 2016-10-28 | 2017-02-22 | 济南瑞通铁路电务有限责任公司 | Flame-retardant and fire-resistant direct current power cable applied to rail transit and production system and method |
| CN107274980A (en) * | 2017-07-07 | 2017-10-20 | 浙江中兴电缆有限公司 | A kind of double-layer coextrusion insulated irradiation crosslinking halogen-free low-smoke and flame retardant electric wire and preparation method |
| CN109559852A (en) * | 2018-11-16 | 2019-04-02 | 尚纬股份有限公司 | A kind of manufacturing method of 1E grades of K3 class cables of used in nuclear power station high fire-retardance low release |
| CN111341491A (en) * | 2020-04-03 | 2020-06-26 | 兰州众邦电线电缆集团有限公司 | Waterproof environment-friendly cable with long service life and preparation method thereof |
| CN212434278U (en) * | 2020-06-22 | 2021-01-29 | 浙江万马股份有限公司 | Durable insulation irradiation crosslinking halogen-free low-smoke high-flame-retardant safety wire |
| CN112259282A (en) * | 2020-09-14 | 2021-01-22 | 中天科技装备电缆有限公司 | Photoelectric composite flexible cable, extrusion equipment for producing same and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242350A (en) * | 2021-12-17 | 2022-03-25 | 湖南省冷水滩电线电缆股份有限公司 | High-temperature-resistant photovoltaic cable manufacturing method and cable processing structure |
| CN114242350B (en) * | 2021-12-17 | 2024-02-06 | 湖南省冷水滩电线电缆股份有限公司 | Manufacturing method of high-temperature-resistant photovoltaic cable and cable processing structure |
| CN114334238A (en) * | 2021-12-31 | 2022-04-12 | 福建成田科技有限公司 | Double-layer co-extrusion insulation type B1-grade flame-retardant cable |
| CN114334238B (en) * | 2021-12-31 | 2024-01-19 | 福建成田科技有限公司 | Double-layer co-extrusion insulation type B1-level flame-retardant cable |
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