Comprehensive protection-type medium-voltage subway cable
A subway and cable technology, applied in the direction of insulated cables, power cables with shielding/conducting layers, cables, etc., can solve the problems of poor protection performance, and achieve the effects of good bending performance, novel structure and high cost performance.
Active Publication Date: 2017-05-17
湖北龙腾红旗电缆(集团)有限公司
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Problems solved by technology
[0010] The technical problem to be solved by the present invention is to provide a comprehensive protective medium-voltage subway cable, which can solve the problems of poor protective performance and large potential safety hazards. It has a novel structure, advanced materials, superior performance, and good comprehensive protective performance. safe and reliable operation
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[0030] Such as figure 1 As shown, a comprehensive protective medium voltage subway cable includes a core composed of a conductor and a composite insulating layer wrapped outside the conductor.
[0031] The conductor is a water-blocking conductor, including a plurality of copper monofilaments regularly arranged and tightly pressed and stranded conductor 1, and the layers of the tightly pressed and stranded conductor 1 are filled with water-blocking yarn 2, and the surface of the tightly pressed and stranded conductor 1 is wrapped with a semiconductive resistor Hose3.
[0032] The composite insulating layer is composed of a conductor shielding layer 4, a cross-linked polyethylene insulating layer 5 and an insulating shielding layer 6 arranged from the inside to the outside. The insulating shielding layer is wrapped with a metal shielding layer 7, and the surface of the metal shielding layer 7 is wrapped with a water-blocking layer. Bring 8.
[0033] The water blocking tape 8 i...
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The invention discloses a comprehensive protection-type medium-voltage subway cable, which comprises a cable core formed by a conductor and a composite insulation layer coating the conductor, wherein the conductor is a water-blocking conductor; multiple copper monofilaments are arranged regularly to form the pressed and stranded conductor; water-blocking yarns fill layers of the pressed and stranded conductor; the surface of the pressed and stranded conductor is wrapped with a semiconductor water-blocking belt; the composite insulation layer is composed of a conductor shielding layer, a cross linked polyethylene insulated layer and an insulated shielding layer arranged from inside to outside; the insulated shielding layer is coated with a metal shielding layer; the surface of the metal shielding layer is wrapped with a water-blocking belt; and the water-blocking belt is coated with a water-blocking inner sheath layer, an armored layer and an outer sheath layer sequentially from inside to outside. The comprehensive protection-type medium-voltage subway cable provided by the invention has the advantages that the problems of poor protection performance and large hidden safety dangers can be solved; the structure is novel; the materials are advanced; the use performance is excellent; the comprehensive protection performance is good; and the operation is safe and reliable.
Description
technical field [0001] The invention relates to the field of cables, in particular to a comprehensive protective medium-voltage subway cable. Background technique [0002] With the continuous development of the city, the ground transportation becomes more and more crowded, so it has become a mainstream development trend to choose the subway transportation to completely change the traffic congestion. As the main electrical equipment of subway vehicles, it is particularly important whether subway cables can keep up with the rapid development of subway vehicles. [0003] At present, there is no national standard for medium voltage subway cables. Most enterprises refer to the national standard GB / T12706-2008 to develop, produce and sell medium voltage subway cables. The main structure of the product consists of copper conductor, conductor shield, XLPE insulation, insulation shield, copper Tape shielding, PP wrapping tape, polyethylene inner sheath, steel tape armor, halogen-fre...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01B7/00H01B7/18H01B7/22H01B7/282H01B7/285H01B9/02
CPCH01B7/0009H01B7/1805H01B7/22H01B7/2825H01B7/285H01B9/02
Inventor 管永生赵云卫建良张忠翠王雪
Owner 湖北龙腾红旗电缆(集团)有限公司