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Mineral insulated fireproof cable

A technology for mineral insulation and fireproof cables, applied in the direction of insulated cables, power cables, insulated conductors, etc., can solve the problems of cable insulation melting, burning, and can not guarantee the safety and reliability of lines, and achieves enhanced fire performance, improved flame retardant performance, Good anti-solvent effect

Pending Publication Date: 2018-11-23
JIANGSU DONGFENG CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual production process, silane cross-linked polyethylene is used for insulation, which is a flammable material. Although the external flame retardant material is used, in case of fire during use, the cable insulation will also melt and drop after the external flame retardant material is burned. Combustion, can not guarantee the safety and reliability of the line

Method used

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  • Mineral insulated fireproof cable
  • Mineral insulated fireproof cable
  • Mineral insulated fireproof cable

Examples

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0020] Such as figure 1 As shown, the present invention provides a mineral insulated fireproof cable, including a cable core, the cable core is formed by twisting three insulated wire cores; Outer mineral insulation layer 2, copper wire shielding layer 3, and third glass fiber composite fireproof layer 4; fill the gap of the cable core with non-hygroscopic filling strips 5, and wrap the first glass fiber composite fireproof layer outside the cable core 6. Wrap the semi-...

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Abstract

The invention discloses a mineral insulated fireproof cable. The mineral insulated fireproof cable comprises a cable core which is formed by twisting three insulated wire cores; and gaps of the cablecore are filled with non-moisture absorption filling strips, the cable core is coated with a first glass fiber composite fireproof layer in a wound mode, the first glass fiber composite fireproof layer is coated with a semiconducting self-adhesive tape in a wound mode, the semiconducting self-adhesive tape is coated with a cold-resistant, flame-retardant and high-tear resistance chlorinated polyethylene rubber inner sheath in an extruded mode, the cold-resistant, flame-retardant and high-tear resistance chlorinated polyethylene rubber inner sheath is coated with a second glass fiber compositefireproof layer in a wound mode, a steel belt is woven on the exterior of the second glass fiber composite fireproof layer, and the steel belt is coated with a cold-resistant, flame-retardant and high-tear resistance chlorinated polyethylene rubber inner sheath in an extruded mode. The mineral insulated fireproof cable has the advantages of being resistant to high temperature, non-inflammable, resistant to corrosion, insulated to heat, high in tensile strength, good in electrical insulating performance and the like.

Description

technical field [0001] The invention relates to the field of cables, in particular to a mineral insulated fireproof cable. Background technique [0002] At present, the construction market, especially the buildings in the main public places, has higher and higher requirements for fire protection. It is required that the low-voltage power cables with fire resistance performance not only do not burn themselves, do not spread and expand the fire, but also require fire resistance in the case of flames, water and vibrations. Under normal power transmission, to win precious time for fire fighting and rescue of people's lives and property. Traditional fireproof cables generally use mineral insulation (magnesium oxide) and copper tube sheaths. Although they have certain fireproof performance, there are many problems. These problems are mainly due to the short length of manufacture. The core conductor makes the cable hard, hard to bend and straight, difficult to connect, easy to get...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/02H01B7/17H01B7/18H01B7/28H01B7/282H01B7/29H01B7/295H01B9/02
CPCH01B7/0225H01B7/0291H01B7/17H01B7/183H01B7/1875H01B7/1895H01B7/28H01B7/2806H01B7/2825H01B7/29H01B7/292H01B7/295H01B9/027
Inventor 薛虹
Owner JIANGSU DONGFENG CABLE
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