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Manufacturing method of fluoroplastic insulated power cable

A technology of power cables and manufacturing methods, which is applied in the field of power cables, can solve problems affecting cable production efficiency, low cable yield rate, waste of resources, etc., and achieve the effect of ensuring signal shielding function, improving yield rate, and ensuring insulation performance

Pending Publication Date: 2021-02-02
源鑫线缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the production process of power cables, due to the traditional manufacturing process, the conductors are always preheated before the conductors are extruded to form the inner insulating layer, so that the preheated conductors are oxidized and discolored, so that when the cables pass through the spark test The yield rate is low, which affects the production efficiency of cables and causes waste of resources

Method used

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  • Manufacturing method of fluoroplastic insulated power cable

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0019] Specific implementation method: combined figure 1 shown, including the following steps:

[0020] Step 1, drawing and annealing the copper material to form a conductor 1;

[0021] Step 2, without preheating the conductor 1, directly extruding the conductor 1 on the extruder to form the inner insulating layer 2;

[0022] Step 3, conduct a spark test on the conductor 1 with the inner insulating layer 2 after extrusion;

[0023] Step 4: Twisting the conductors 1 that have passed the spark test into a cable core, filling the gaps between multiple cable cores with fillers to form a filling area 3, and tightening all the cores with tape 4;

[0024] Step 5, after tightening the strapping 4, the metal wire is wound on the outer surface of the strapping 4 to form a metal shielding layer 5, and then extruding the outer side of the metal shielding layer 5 on an extruder to form an outer insulating layer 6;

[0025] The inner insulating layer 2 described in step 2 adopts fluorine...

Embodiment 1

[0030] Including the following steps:

[0031] Step 1, drawing and annealing the copper material to form a conductor 1;

[0032] Step 2, without preheating the conductor 1, directly extruding the conductor 1 on the extruder to form the inner insulating layer 2;

[0033] Step 3, conduct a spark test on the conductor 1 with the inner insulating layer 2 after extrusion;

[0034] Step 4: Twisting the conductors 1 that have passed the spark test into a cable core, filling the gaps between multiple cable cores with fillers to form a filling area 3, and tightening all the cores with tape 4;

[0035] Step 5, after tightening the strapping 4, the metal wire is wound on the outer surface of the strapping 4 to form a metal shielding layer 5, and then extruding the outer side of the metal shielding layer 5 on an extruder to form an outer insulating layer 6;

[0036] The inner insulating layer 2 described in step 2 adopts fluorine plastic;

[0037] Step one: the conductor 1 is a solid c...

Embodiment 2

[0041] Including the following steps:

[0042] Step 1, drawing and annealing the copper material to form a conductor 1;

[0043] Step 2, without preheating the conductor 1, directly extruding the conductor 1 on the extruder to form the inner insulating layer 2;

[0044] Step 3, conduct a spark test on the conductor 1 with the inner insulating layer 2 after extrusion;

[0045] Step 4: Twisting the conductors 1 that have passed the spark test into a cable core, filling the gaps between multiple cable cores with fillers to form a filling area 3, and tightening all the cores with tape 4;

[0046] Step 5, after tightening the strapping 4, the metal wire is wound on the outer surface of the strapping 4 to form a metal shielding layer 5, and then extruding the outer side of the metal shielding layer 5 on an extruder to form an outer insulating layer 6;

[0047] The inner insulating layer 2 described in step 2 adopts fluorine plastic;

[0048] Step one: the conductor 1 is a strande...

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Abstract

The invention relates to the technical field of power cables, in particular to a manufacturing method of a fluoroplastic insulated power cable. The method comprises the following steps that before a conductor is extruded to form an inner insulating layer, the conductor is not preheated any more, so that the conductor does not change color due to the formation of an oxide layer in the preheating process, and the problem that the yield is relatively low when a spark experiment is carried out after the conductor forms the oxide layer is solved. The inner insulating layer and the outer insulatinglayer are both made of fluoroplastic materials, so that the inner insulating layer can still be completely formed even if the conductors are not preheated, the insulating property of the cable is alsoensured by the fluoroplastic materials, and the yield of the cable passing a spark experiment is improved. The metal shielding layer is additionally arranged after cabling, so that the cable has a signal shielding function, and the anti-interference capability of the cable is improved.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a method for manufacturing a fluoroplastic insulated power cable. Background technique [0002] Power cables are cables used to transmit and distribute electric energy. Power cables are often used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. [0003] In the production process of power cables, due to the traditional manufacturing process, the conductors are always preheated before the conductors are extruded to form the inner insulating layer, so that the preheated conductors are oxidized and discolored, so that when the cables pass through the spark test The yield rate is low, which affects the production efficiency of cables and causes waste of resources. Contents of the invention [0004] The technical problem to be solved by the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/14H01B13/24H01B13/26H01B3/44H01B7/02H01B9/00
CPCH01B3/445H01B7/0291H01B9/025H01B13/145H01B13/148H01B13/24H01B13/26
Inventor 刘艳肖
Owner 源鑫线缆有限公司
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