Composite multi-core ultra-high-strength shielding waterproof and flame-resistant cable
An ultra-high-strength, fire-resistant cable technology, applied in the direction of insulated cables, bendable cables, cables, etc., can solve the problems of cables being easily bent and pulled at will, bulky cables, and damage to the outer sheath, etc. It is not easy to be damaged and increases the shielding effect
Inactive Publication Date: 2014-08-27
江苏大地电缆有限公司
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Problems solved by technology
These traditional isolation components are expensive to fabricate and assemble
In addition, these shielding compartments are kept relatively thick, resulting in a bulky cable, and when the workers are laying the cables, it is easy to damage the outer sheath during laying
[0005] In summary, the deficiencies of the existing technology are poor flexibility, poor waterproof, poor fire resistance, poor shielding, and the cable is easy to be bent and pulled arbitrarily during use. , easy to cause broken core
Method used
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[0018] Such as figure 1 As shown, a composite multi-core ultra-high-strength shielded waterproof and fire-resistant cable according to the present invention includes a cable core composed of a multi-core cable core and two single-core reinforcing cores. The outer layer is formed by twisting two insulated wire cores and then extruding the inner sheath 3, the first shielding layer 4 and the outer sheath 5; , a protective layer 8 and an armor layer 9; the outer sheath 5 of the outermost layer of the cable core is connected to the outermost armor layer 9 of the two reinforced cores through plastic connectors 6; the cable core The second shielding layer 11 and the overall outer sheath 12 are arranged in turn.
[0019] The two reinforcements are located at the relative position of the cable core, facing up and down or left and right; the gap of the cable core is provided with a filling rope 13; the insulating layer 2 is composed of multi-layer mica tape; the plastic The connectin...
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The invention discloses a composite multi-core ultra-high-strength shielding waterproof and flame-resistant cable which comprises a cable core. The cable core is composed of a multi-core cable core and two single-core strengthening cores. The multi-core cable core is formed by twisting two insulation cable cores and then wrapping the two insulation cable cores with an inner sheath, a first shielding layer and an outer sheath in an extrusion mode sequentially from inside to outside. The two strengthening cores are the same in structure and are respectively formed by a steel wire rope, a protection layer and an armor layer sequentially from inside to outside. The outer sheath at the outermost layer of the multi-core cable core is connected with each armor layer at the outermost layer of the corresponding single-core strengthening core through a plastic connector. A second shielding layer and a master outer sheath are sequentially arranged outside the cable core. The composite multi-core ultra-high-strength shielding waterproof and flame-resistant cable is simple in structure, convenient to manufacture, low in production cost and high in abrasion resistance; due to the two steel wire ropes outside the outer sheath, the strength of the whole cable is enhanced, and the service life of the cable is prolonged; in addition, by the use of the two shielding layers, the shielding property of the cable is improved.
Description
technical field [0001] The invention belongs to the field of power cables, in particular to a composite multi-core ultra-high-strength shielded waterproof and fire-resistant cable. Background technique [0002] As we all know, the flame retardancy and combustion resistance of cables are important in use. In the past, fireproof cables used mineral insulation such as magnesium oxide and metal copper sheaths. Due to various restrictions, continuous large-length production could not be performed, and It cannot be bent, and it is not easy to install and lay. Therefore, flexible fireproof cables have appeared. In contrast, they can be produced continuously in large lengths, and the cross-section is not limited. The fire resistance grade not only meets the requirements of the national standard GB / T 19666-2005 and the industry standard GA 306.2-2007, but also meets the requirements of Class A at 650°C for 3h, Class B at 750°C for 3h, Class C at 950°C for 3h, Class S as stipulated in...
Claims
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IPC IPC(8): H01B7/04H01B7/282H01B7/17H01B7/29H01B7/18H01B7/22
Inventor 缪建祥王剑英钱祖其
Owner 江苏大地电缆有限公司