Anti-interference fire-resistant control cable
A control cable and refractory technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of small cross-section refractory control cable wrapping production limitation, the quality of refractory performance cannot be guaranteed, and it cannot pass spraying and vibration tests. Good anti-interference and low radiation performance, reducing casualties and property losses, and reducing electromagnetic environmental pollution
Inactive Publication Date: 2013-01-02
山西太平洋电缆有限公司
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Problems solved by technology
[0004] At present, fire-resistant control cables in the cable industry generally use refractory mica tape wrapping and insulation. However, during the wrapping or bending process of mica tape-wrapped fire-resistant cables, the mica sheets are easy to fall off, and cannot pass the spray and vibration tests. And now there are many types of mica tapes, the quality is uneven, and the stability is poor, so it is difficult to guarantee the fire-resistant quality of the cable.
Secondly, most of the insulation and sheath materials used in ordinary fire-resistant control cables contain halogens or fail to meet the environmental protection requirements of the EU RoHS Directive
Furthermore, the wrapping production of small-section fire-resistant control cables is limited, and the quality of fire-resistant performance cannot be guaranteed.
Ordinary silicone rubber control cables turn into silica after burning. Although silica is attached to the surface of the cable conductor and has a certain fire resistance, the silica after burning is powdery or brittle ash, with no adhesion. It is easy to fall off, loses its protective effect, easily causes short circuit, and the fire resistance of the cable is relatively greatly reduced
Method used
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[0018] The present invention will be further described through specific embodiments below in conjunction with the accompanying drawings.
[0019] The structure of the anti-interference fire-resistant control cable is as follows: figure 1 As shown, there are cable core, glass fiber filament 3, glass fiber cloth wrapping tape 4, shielding layer 5 and refractory rubber sheath 6 sequentially from inside to outside. The cable core is composed of a plurality of insulated wire cores, and each insulated wire core is composed of a conductor 1 and a refractory insulating layer 2 extruded on the outer layer of the conductor 1 which is made of high-temperature ceramic refractory silicone rubber. A glass fiber cloth tape 4 is wrapped around the cable core, and glass fiber filaments 3 are filled in gaps between the insulated cores and the glass fiber cloth tape 4 . The shielding layer 5 surrounds the glass fiber cloth wrapping tape 4 and consists of two layers of copper wire cross braided ...
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Abstract
The invention discloses an anti-interference fire-resistant control cable which comprises a cable core, a shielding layer and a fire-resistant rubber sheath. The cable core comprises at least one insulating wire core, the shielding layer surrounds the cable core, the fire-resistant rubber sheath is extruded on the shielding layer, each insulating wire core comprises a conductor made of conducting materials and a fire-resistant insulating layer extruded on an outer layer of the conductor, a glass fiber wrapping tape is wrapped between the cable core and the shielding layer, and glass fibers are filled among the insulating wire cores and in gaps among the insulating cores and the glass fiber wrapping tape. The control cable not only is good in electric insulating performance, high-temperature resistance and low-temperature resistance, but also is excellent in fire-resistance, environmental protection and anti-interference performance, and is simple in processing technology, convenient to transport and install and high in cost performance.
Description
technical field [0001] The invention relates to a cable, in particular to a control cable with anti-interference and fire-resistant performance. Background technique [0002] With the rapid development of my country's metallurgy, electric power, electronics, automation and information network industries, the "Civil Building Wire and Cable Fire Protection Design Regulations" issued by the East China Architectural Design and Research Institute in 2002 clearly proposed the use of low-smoke and halogen-free wires and cables. Require. With the development of modern science and technology and the EU RoHS environmental protection directive [0003] It is proposed that higher requirements are put forward for the safety and environmental protection of wire and cable products. For oil platforms, mines, high-rise buildings, hotels, large supermarkets, hospitals, subways, tunnels, warehouses, civil facilities and other places, cables with safety, fire resistance and environmental prote...
Claims
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IPC IPC(8): H01B7/17H01B7/29
Inventor 徐强沙迪生郑国璋陈勇奇
Owner 山西太平洋电缆有限公司