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Fireproof mud-filled inorganic mineral insulated fire-resistant cable

An inorganic mineral, fire-resistant cable technology, applied in the direction of insulated cables, insulated conductors, cables, etc.

Pending Publication Date: 2019-07-12
GOLD CUP ELECTRIC APP HENGYANG CABLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a kind of fire-resisting grade to reach the level of BTTZ cable for the above-mentioned technical problems existing in the existing BTTZ cable, and the smoke toxicity released when the cable burns can be controlled within a controllable range, no Fire-resistant mud-filled inorganic mineral insulated fire-resistant cables that cause secondary damage to the human body and can be produced continuously

Method used

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  • Fireproof mud-filled inorganic mineral insulated fire-resistant cable
  • Fireproof mud-filled inorganic mineral insulated fire-resistant cable

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] see figure 1 , a kind of fire-proof mud-filled inorganic mineral insulated fire-resistant cable shown in the figure, including four cable cores, and the four cable cores are twisted together. It also includes an isolation layer 40 made of inorganic mineral fire-resistant mud coated outside the four cable cores by continuous extrusion, a fire-resistant layer 50 coated outside the isolation layer 40, and a fire-resistant layer coated outside the fire-resistant layer 50. Sheath layer 60 .

[0022] Each cable core includes a conductor 10 , an insulating layer 20 covering the conductor 10 and a metal sleeve 30 covering the insulating layer 20 .

[0023] The insulating layer 20 is formed by concentrically wrapping 5-6 inorganic mica tapes or ceramic tapes on the conductor 10. The inorganic mica tapes or ceramic tapes have high refractory t...

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Abstract

The invention relates to a fireproof mud-filled inorganic mineral insulated fire-resistant cable, comprising at least one cable core and characterized by further comprising an isolation layer wrappingthe cable core by continuous extrusion and formed by inorganic mineral fireproof mud, a fire barrier layer wrapping the isolation layer, and a sheath layer wrapping the fire barrier layer. The fireproof mud-filled inorganic mineral insulated fire-resistant cable of the invention achieves a fire resistance rating as high as a BTTZ cable, and can control the poisonousness of the smoke released by the burnt cable within a controllable range without causing secondary damage to a human body.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to an inorganic mineral insulated fire-resistant cable filled with fire-proof mud. Background technique [0002] At present, there are two mainstream products in the domestic mineral insulated cable market: [0003] (1) Copper sheath + magnesium hydroxide insulated fire-resistant cables, the main models are BTTZ, BTTVZ. [0004] (2) Multi-layer mica tape insulation + aluminum sheath, magnesium hydroxide powder slurry insulation layer, the main models are BTLY, WDZAN, GN-A, etc. [0005] BTTZ cables were originally used in high-temperature places in the UK, and were first introduced to China in the 1980s when the East China Institute involved Shanghai Yaohua Glass Factory. Later, the Shanghai Electric Cable Research Institute carried out secondary development and produced it in Zhejiang Province. Therefore, before the flexible fire-resistant cable came out, it was used in the distri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/29H01B7/295H01B7/282H01B7/20H01B7/02
CPCH01B7/29H01B7/292H01B7/295H01B7/2825H01B7/205H01B7/02Y02A30/14
Inventor 艾卫民蒋绍清林玉启
Owner GOLD CUP ELECTRIC APP HENGYANG CABLES
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