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Fireproof cable with ceramic inner sheath layer

A fireproof cable and inner sheath technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of difficult bending, complicated manufacturing process, time-consuming and labor-intensive construction of fireproof cables, etc., and achieve good fireproof effect

Inactive Publication Date: 2016-12-07
四川新蓉电缆有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For fireproof cables in the current technology, the use of metal composite materials and structures for the protective layer will lead to a decrease or insufficient insulation resistance of the cable, low voltage resistance, and it is difficult to withstand the impact voltage formed by frequency conversion and inductance factors. The impact resistance is not high and requires consumption. A large number of precious metal resources such as copper and magnesium are expensive, the manufacturing process is complicated, and the bending is difficult, which leads to time-consuming and laborious construction during the installation of fire-resistant cables, which is easy to cause safety hazards, and causes the outer protective layer to lose its function due to overheating. , The emergency device works for a long time in the event of a fire

Method used

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  • Fireproof cable with ceramic inner sheath layer

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Effect test

Embodiment 1

[0017] A fireproof cable with a ceramizable inner sheath, comprising an insulated conductor 1, a ceramizable inner sheath 2 covering the insulated conductor 1 in turn, a fireproof belt 3, and a radiation crosslinked low-smoke halogen-free polyolefin sheath Layer 4, metal sheath 5. The insulated conductor 1 is a core, and the metal sheath 5 is a corrugated copper tube.

Embodiment 2

[0019] A fireproof cable with a ceramizable inner sheath, comprising an insulated conductor 1, a ceramizable inner sheath 2 covering the insulated conductor 1 in turn, a fireproof belt 3, and a radiation crosslinked low-smoke halogen-free polyolefin sheath Layer 4, metal sheath 5. The insulated conductor 1 has two cores, and the metal sheath 5 is a corrugated stainless steel tube. A filler is provided between the insulated conductor 1 and the ceramizable inner sheath 2, and the filler is a rock wool rope.

Embodiment 3

[0021] A fireproof cable with a ceramizable inner sheath, comprising an insulated conductor 1, a ceramizable inner sheath 2 covering the insulated conductor 1 in turn, a fireproof belt 3, and a radiation crosslinked low-smoke halogen-free polyolefin sheath Layer 4, metal sheath 5. An inner shielding layer is also provided between the ceramizable inner protective layer 2 and the fireproof belt 3 , and an outer shielding layer is arranged between the fireproof belt 3 and the radiation crosslinked low-smoke halogen-free polyolefin sheath layer 4 . The insulated conductor 1 has 5 cores, and the metal sheath 5 is a corrugated stainless steel tube. A filler is provided between the insulated conductor 1 and the ceramizable inner sheath 2, and the filler is a rock wool rope.

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Abstract

The invention belongs to the technical field of cables, particularly relates to a fireproof cable with a ceramic inner sheath layer, and aims at solving the technical problem of providing a heat-resistant and impact-resistant fireproof cable with the ceramic inner sheath layer. The fireproof cable comprises an insulated conductor, the ceramic inner sheath layer, a fireproof tape, an irradiation crosslinking low-smoke halogen-free polyolefin sheath layer and a metal sheath, wherein the ceramic inner sheath layer, the fireproof tape, the irradiation crosslinking low-smoke halogen-free polyolefin sheath layer and the metal sheath sequentially coat the insulated conductor; the insulated conductor comprises a copper core and an irradiation crosslinking low-smoke halogen-free polyolefin insulating layer; and the irradiation crosslinking low-smoke halogen-free polyolefin insulating layer wraps the copper core. The fireproof cable has the beneficial effects that the fireproof cable has a good fireproof effect and has impact resistance.

Description

technical field [0001] The invention belongs to the technical field of cables, in particular to a fireproof cable with a ceramizable inner sheath. Background technique [0002] For fireproof cables in the current technology, the use of metal composite materials and structures for the protective layer will lead to a decrease or insufficient insulation resistance of the cable, low voltage resistance, and it is difficult to withstand the impact voltage formed by frequency conversion and inductance factors. The impact resistance is not high and requires consumption. A large number of precious metal resources such as copper and magnesium are expensive, the manufacturing process is complicated, and the bending is difficult, which leads to time-consuming and laborious construction during the installation of fire-resistant cables, which is easy to cause safety hazards, and causes the outer protective layer to lose its function due to overheating. , The emergency device works for a l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/17H01B7/29
CPCH01B7/17H01B7/29
Inventor 赵保森姚鸣霍帅营何永峰陈伟
Owner 四川新蓉电缆有限责任公司