Novel low-smoke zero-halogen flame-retardant fire-resistant and impact-resistant cable for nuclear power station

A nuclear power plant, flame-retardant technology, applied in the direction of insulated cables, cable/conductor manufacturing, cables, etc., can solve problems such as shedding, loss of fire resistance of cables, release of toxic gases, etc.

Active Publication Date: 2012-10-17
CHANGZHOU BAYI CABLE
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

During the manufacturing process, several structural layers must be bonded together, which may cause delamination and detachment of the mica tape during cable manufacturing or laying
[0003] In addition, with the existence of force majeure factors such as various earthquakes, if mechanical vibration occurs during the combustion process of the cable, the ca

Method used

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  • Novel low-smoke zero-halogen flame-retardant fire-resistant and impact-resistant cable for nuclear power station
  • Novel low-smoke zero-halogen flame-retardant fire-resistant and impact-resistant cable for nuclear power station
  • Novel low-smoke zero-halogen flame-retardant fire-resistant and impact-resistant cable for nuclear power station

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Embodiment Construction

[0030] Reference figure 1 with figure 2 , The new type of low-smoke halogen-free flame-retardant fire-resistant and impact-resistant cable for nuclear power plants of the present invention. A calcined muscovite tape 12 is wrapped around the outer circumference of the tinned copper conductor 11. The outer periphery of the calcined muscovite tape 12 is extruded with an insulating layer 13 from the inside to the outside. The glass fiber yarn layer 14 is fixed on the outer circumference of the calcined muscovite tape in a weaving manner. The tinned copper conductor 11, the calcined muscovite tape 12, the glass fiber yarn layer 14 and the insulating layer 13 constitute the core 1 of the cable of the present invention. The calcined muscovite tape is made of calcined muscovite paper, a single-layer alkali-free glass fiber cloth as reinforcing materials, and is bonded with high temperature resistant organic silica gel. The amount of the calcined muscovite tape is 170-190g / m 2 , The ...

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Abstract

The invention discloses a novel low-smoke zero-halogen flame-retardant fire-resistant and impact-resistant cable for a nuclear power station. A white calcination mica tape is lapped on the periphery of a tinned copper conductor; an insulating layer is lapped on the periphery of the white calcination mica tape from inside to outside; a wrapping tape wraps the periphery of a cable core of a wire core of the insulating layer; a low-smoke zero-halogen high-flame-retardant oxygen-isolating layer is lapped on the periphery of the wrapping tape; the oxygen index of the low-smoke zero-halogen high-flame-retardant oxygen-isolating layer is greater than 35; a total shielding layer is woven on the periphery of the low-smoke zero-halogen high-flame-retardant oxygen-isolating layer; and an outer sheath is lapped on the periphery of the total shielding layer. The fire resistance rating of the cable can reach the temperature of 950-1000 DEG C, a fireproof layer of the cable cannot drop at the high temperature, and the cable resists impact and vibration, and still keeps fire resistance.

Description

Technical field [0001] The invention relates to a cable, in particular to a novel low-smoke halogen-free flame-retardant fire-resistant and impact-resistant cable for nuclear power plants. Background technique [0002] At present, synthetic mica is widely used in the design and manufacture of fire-resistant cables in our country. In addition to the characteristics of natural mica tape, this mica tape is mainly characterized by high heat resistance. In conventional occasions, fire-resistant cables made of this synthetic mica tape can meet the requirements. Low-smoke, halogen-free, flame-retardant fire-resistant cables for nuclear power plants are different from the general fire-resistant cables of 830℃. The product requirements not only comply with IEC 60754, IEC 61034, IEC 60332-1, IEC 60332-3-22 Performance, and it is also required to be able to pass the Class A fire resistance test with a temperature level of 950-1000°C and a continuous fire time of 90 minutes. Although the f...

Claims

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Application Information

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IPC IPC(8): H01B7/17H01B7/18H01B7/29H01B7/295H01B13/00
Inventor 徐佳段惟碌朱洁朱咸林洪启付鲍蕾蕾
Owner CHANGZHOU BAYI CABLE
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