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A fiber reinforced fireproof cable

A fire-resistant cable, reinforced technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of poor bending performance, cracks in the fire insulation layer, and inability to produce large lengths, and achieve improved thermal resistance and mechanical properties. Tensile strength and mechanical impact, ensuring safety and durability

Active Publication Date: 2020-05-08
JIANGSU HENGTONG WIRE & CABLE TECH
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Problems solved by technology

[0003] (1) Mineral insulated cable BTTZ adopts magnesia mineral insulation wrapping method, but magnesia mineral insulated cable has disadvantages such as that the joints are easily affected by moisture and the insulation resistance is affected, and due to incoming materials and processing restrictions, it cannot be produced in large lengths, and its bending performance is extremely poor.
[0004] (2) The set of inorganic insulated cables (YTTW) adopts the mica tape wrapping method, but the mica tape wrapping cable has the problems of mica tape moisture absorption and low production efficiency, and the glass fiber on the mica tape is easy to appear after burning at a high temperature fire source Brittleness and other phenomena
[0005] (3) When the ceramic fireproof cable burns, the crust will generate inorganic materials for fire protection, but the strength and reliability of the crust cannot be guaranteed.
For example, in the face of collision, extrusion and impact caused by the collapse of other objects at the fire scene, as well as the spraying effect of fire sprinkler, the ceramic fireproof cable is subjected to mechanical stress, fire sprinkler and thermal stress, etc., the crusted fire insulation Cracks may occur in the layer, and even cracks may expand and cause large pieces to fall off, seriously affecting the fire-resistant reliability of fire-resistant cables

Method used

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  • A fiber reinforced fireproof cable
  • A fiber reinforced fireproof cable
  • A fiber reinforced fireproof cable

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Embodiment Construction

[0028] The inventor found that under fire conditions, the application environment of fireproof cables is very complex and harsh, not only the high temperature caused by flame burning, but also the collision, extrusion and impact caused by the collapse of other objects at the fire scene, as well as fire protection. Such harsh environmental conditions will seriously affect the fire-resistant reliability of fire-resistant cables, thereby threatening the safety and durability of fire-fighting system operation. In addition, during a fire, although the fireproof cable can withstand flame ablation and maintain the integrity of the line with a certain amount of mechanical impact and spraying, the internal core temperature of the fireproof cable is mostly in the case of flame ablation. It will rise, and the increase of pressure drop will affect the current carrying capacity of the cable. In addition, since the fire-resistant cables used in various engineering projects are mostly small-...

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Abstract

The invention relates to the technical field of cables, and specifically relates to a fiber-reinforced fireproof cable. The fiber-reinforced fireproof cable comprises a packing layer, a glass fiber belt, a compound fire insulation layer and a plurality of cable cores, wherein the glass fiber belt is arranged on the outer surfaces of the cable cores in a sleeving manner; the packing layer is packedamong the cable cores and between the cable cores and the glass fiber belt; and the compound fire insulation layer is arranged on the outer surface of the glass fiber belt in the sleeving manner. Thefiber-reinforced fireproof cable provided by the invention has preferable mechanical performance and higher heat resistance, the fireproof performance of the cable is effectively improved, and the operational safety and durability of a fire extinguishing system during a fire are guaranteed.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a fiber-reinforced fireproof cable. Background technique [0002] The current fireproof cables mainly include mineral insulated cables BTTZ, inorganic insulated cables (YTTW), and ceramic fireproof cables. Among them, the fireproof mechanism of BTTZ and YTTW is copper sheath fireproof; When the material is encrusted to form an inorganic material for fire protection, the aforementioned three fire-resistant cables have different shortcomings during use, as follows. [0003] (1) Mineral insulated cable BTTZ adopts magnesia mineral insulation wrapping method, but magnesia mineral insulated cable has disadvantages such as that the joints are easily affected by moisture and the insulation resistance is affected, and due to incoming materials and processing restrictions, it cannot be produced in large lengths, and its bending performance is extremely poor. . [0004] (2) The set of ino...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/17H01B7/18H01B7/29
CPCH01B7/17H01B7/18H01B7/292
Inventor 王波李治梁玉莹卞凤贤徐健
Owner JIANGSU HENGTONG WIRE & CABLE TECH
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