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A kind of preparation method of fireproof cable

A technology of fireproof cable and waterproof layer, applied in cable/conductor manufacture, insulation of conductor/cable, circuit, etc., can solve the problems of destructive discharge of cable insulation, unstable current, damage of cable insulation structure, etc., to reduce fire The probability of resistance, the effect of preventing the increase of resistance and prolonging the service life

Active Publication Date: 2022-08-05
福建礼恩科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the treatment is not timely, it may cause serious consequences; if the surface temperature of the cable is too high, it will cause a serious fire accident, and if it is light, it will cause the aging of the cable materials to accelerate, the resistance of the cable conductor will increase, and the current will be unstable. Generally, they do not have the ability to dissipate heat, and cannot self-regulate the temperature; in addition, as the use of the cable increases, the insulation part of the cable is susceptible to destructive discharge due to high-temperature oxidation, aging and other factors, and even breakdown, which not only affects the insulation of the cable The structure causes a vicious cycle of damage, and it creates a risk of electric leakage and fire. Existing cables do not have the ability to self-heal and prevent this from happening

Method used

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  • A kind of preparation method of fireproof cable
  • A kind of preparation method of fireproof cable
  • A kind of preparation method of fireproof cable

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Effect test

preparation example Construction

[0034] see figure 1 and figure 2 As shown, a preparation method of a fireproof cable includes a single conductor 1 formed by drawing a single wire, annealing the single wire, and forming it, and at least includes the following steps:

[0035] ①Extrude the inner insulating layer 2, and coat the inner insulating layer 2 on the conductor 1;

[0036] ②Extrude the inner waterproof layer 3, and cover the inner waterproof layer 3 on the insulating layer 2;

[0037] 3. Coating the conductive layer 4, coating the conductive layer 4 outside the inner waterproof layer 3 and drying;

[0038] ④Extrude the isolation ring 5, extrude the package outside the conductive layer 4 at a certain time interval, and extrude the package for a short time each time, so that the isolation ring 5 is covered on the outer surface of the conductive layer 4, and the adjacent isolation rings 5 ​​are separated by a certain distance to form a groove, During or after the extrusion process, one or more thin wir...

Embodiment 1

[0048] see image 3 , the extruder used in step 5. comprises an upright inner cylinder 11 and an outer cylinder 12 sleeved outside the inner cylinder 11; the inner cylinder 11 and the outer cylinder 12 are both bullet-shaped with a diameter gradually reduced from top to bottom, and the The outlet at the lower end of the inner cylinder 11 is slightly larger than the diameter of the isolation ring 5; the inner cylinder 11 and the outer cylinder 12 enclose an extrusion cavity 13 whose diameter is gradually reduced from top to bottom; the cable passes through the inner cylinder 11 from top to bottom , and the lower end of the extrusion cavity 13 is covered by the outer waterproof layer 6 extruded under pressure in the extrusion cavity 13; The electrorheological fluid 17 filled in the groove is also encapsulated therein.

Embodiment 2

[0050] see Figure 4 , the device for filling the electrorheological fluid 17 in step ⑤ comprises a vertical bullet-shaped cylinder 14; the lower end of the cylinder 14 is connected to an upright thermally conductive connecting pipe 15; the inner diameter of the thermally conductive connecting pipe 15 is separated from the isolation The diameter of the ring 5 is the same or slightly larger than the diameter of the isolation ring 5; the cable passes through the cylinder 14 and the heat conducting connecting pipe 15 from top to bottom; The heat exchange tube 16 circulates the refrigerant to freeze the electrorheological fluid 17 filled in the groove of the cable passing through the heat conduction connecting tube 15 .

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Abstract

The present invention relates to a method for preparing a fireproof cable, which comprises a single conductor drawn from a single wire, annealed and fabricated from a single wire, and at least includes the following steps: 1. Extruding an inner insulating layer, and covering the conductor with an inner insulating layer ②Extrude the inner waterproof layer, and cover the inner waterproof layer on the insulating layer; ③Coat the conductive layer, coat the conductive layer outside the inner waterproof layer and dry it; ④Extrude the isolation ring, with a certain interval outside the conductive layer Time extrusion, each short extrusion, so as to cover the isolation ring on the conductive layer, and the adjacent isolation rings are separated by a certain distance to form a groove, and during or after the extrusion process, a parallel conductor is pulled and pasted outside the isolation ring. Or a number of thin wires or conductive tapes, which are grounded when the fireproof cable is used; The insulating and heat-conducting layer is covered with an outer insulating and heat-conducting layer on the outer waterproof layer; ⑦ The flame-retardant layer is extruded, and the insulating and heat-conducting layer is covered with a flame-retardant layer.

Description

technical field [0001] The invention relates to the field of cable manufacturing, in particular to a preparation method of a fireproof cable. Background technique [0002] A cable is made of one or more conductors insulated from each other and overlaid with insulating protection, and is a wire that transmits electricity or information from one place to another. When a power cable passes a certain load current, it will generate heat. The higher the load current, the higher the cable temperature. If it is not handled in time, it may cause serious consequences; if the surface temperature of the cable is too high, it will cause a serious fire accident, and if it is lighter, the aging of the materials of the cable will be accelerated, the resistance of the cable conductor will increase, and the current will be unstable. Generally, they do not have the ability to dissipate heat, and they cannot self-regulate the temperature; in addition, as the cable is used for a long time, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00H01B13/06H01B13/22H01B13/24
CPCH01B13/00H01B13/22H01B13/06H01B13/24
Inventor 赖建华
Owner 福建礼恩科技有限公司
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