Mining fireproof insulated cable
A technology for insulated cables and mines, applied in the direction of insulated cables, insulated conductors, cables, etc., can solve the problems of inability to form isolation, cable damage, low heating temperature, etc., and achieve the effect of enhancing the service life and scope of application
Inactive Publication Date: 2020-04-21
安徽华能电缆股份有限公司
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Problems solved by technology
The isolation layer in the existing mine fireproof insulated cables is often made of materials with low heating temperature, which cannot form isolation, so that the insulation material is damaged by heat, resulting in short circuit of the cable and even damage to the cable
Method used
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[0014] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elaborated below in conjunction with the accompanying drawings and embodiments.
[0015] Such as figure 1 As shown, a mining fireproof insulated cable includes a wire 1, an insulating layer 2 coated on the outside of the wire 1 from the inside to the outside, a shielding layer 3, a high temperature resistant flame retardant sleeve 6, a flexible metal protective layer 4, and a wear-resistant Jacket 5; wherein the insulating layer 2 is a polyethylene insulating layer, which has excellent electrical insulation properties; the shielding layer 3 is braided by tinned copper wire; the flexible metal protective layer 4 is a flexible soft copper alloy strip The wear-resistant jacket 5 is wound on the high-temperature-resistant and flame-resistant sleeve 6 in a tightly covered manner, and the wear-resistant jacket 5...
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The invention relates to a mining fireproof insulated cable. The cable comprises a lead, an insulating layer, a shielding layer, a high-temperature-resistant flame-retardant sleeve, a flexible metal protective layer and a wear-resistant outer sleeve, wherein the insulating layer, the shielding layer, the high-temperature-resistant flame-retardant sleeve, the flexible metal protective layer and thewear-resistant outer sleeve sequentially wrap the lead from inside to outside. A heat insulation cavity is arranged in the high-temperature-resistant flame-retardant sleeve, and fireproof strips which expand at a high temperature to form a heat insulation fire barrier to achieve a fireproof effect are evenly distributed in the heat insulation cavity. Compared with the prior art, by using the cable of the invention, through the heat insulation cavity and the fireproof strips arranged in the heat insulation cavity, the fireproof strips are heated to expand to form a heat insulation, smoke insulation and fire barrier to achieve the fireproof effect, a problem that the cable is short-circuited and even damaged due to a fact that the lead and the insulating layer in the cable are damaged by heating is avoided, a service life of the cable is greatly prolonged, and an application range of the cable is greatly widened.
Description
technical field [0001] The invention relates to the technical field of cables, in particular to a mine-used fireproof insulated cable. Background technique [0002] Mining cables usually refer to wire and cable products for equipment used in the coal mining industry and underground equipment, including cables for communication, lighting and signal equipment on coal mining machines and conveyors, as well as electric drill cables, cap lamp wires and underground mobile Power cables for substations, etc. Due to the very harsh environment under the mine, there is gas and coal dust, which can easily cause fires and explosions. Therefore, mining cables are all fire-resistant and flame-retardant cables. The isolation layer in the existing mine-used fireproof insulated cables is often made of materials with low heating temperature, which cannot form isolation, so that the insulating material is damaged by heating, resulting in short circuit of the cable, and even damage to the cabl...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01B7/02H01B7/17H01B7/29H01B7/295
CPCH01B7/02H01B7/17H01B7/29H01B7/292H01B7/295
Inventor 肖尚浩胡春宇田兆云束义飞
Owner 安徽华能电缆股份有限公司