High-temperature power cable for cloud rail transit

Abstract

The invention discloses a high-temperature power cable for cloud rail transit, comprising two five-class copper conductors, two large filling polyester ropes and four small filling polyester ropes; the outer surface of the five-class copper conductor is wrapped with a first high-temperature-resistant polyester tape, the outer surface of the first high-temperature-resistant polyester tape is coatedwith a first silicone rubber insulating layer, the outer surface of the large filling polyester rope and the outer surface of the small filling polyester rope are coated with a second silicon rubberinsulating layer, an outer sheath covers the outer surface of a third high-temperature-resistant polyester tape, and the outer sheath is composed of the following components in parts by weight: methylvinyl silicone rubber, gas-phase white carbon black, DOP, decabromodiphenyl ether, antimony trioxide, molybdenum trioxide and a double-25 vulcanizing agent. The high-temperature power cable in the invention has the advantages of high temperature resistance (150 DEG C), cold resistance (-40 DEG C), mineral oil resistance, acid and alkali resistance, ozone aging resistance, battery solution resistance and high tearing strength, low-smoke halogen-free flame retardancy, low toxicity and the like, and the temperature-resistant grade, the load-carrying capacity and the overload capacity of the cable are improved.

Description

technical field [0001] The invention relates to a high-temperature power cable, in particular to a high-temperature power cable for cloud rail transit. Background technique [0002] "Cloud Rail" is a new straddle-type monorail transportation system developed by Shenzhen BYD Company. Compared with conventional subways, it has the advantages of low cost, short construction period, small footprint, and high reliability. It has been officially released since October 13, 2016. Since then, it has successively landed in Shantou, Bengbu, Guang'an and other cities, and the market prospect is good. [0003] At present, locomotive cables for rail transit mainly implement European standards, mainly including: low-smoke and halogen-free standard wall locomotive cables (EN 50264), low-smoke and halogen-free thin-wall locomotive cables (EN 50306), silicone rubber insulated high-temperature resistant cables (EN 50382) And so on three categories. [0004] Existing technical problems: (1) H...

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Problems solved by technology

[0004] Existing technical problems: (1) High-temperature resistant locomotive cables are all single-core structures. For DC current traction, two cables are required, which takes up a lot of space and has low power supply reliability; (2) Compared with ordinary rail locomotives Cables for cloud rail transit are also required to have the following properties: (1) wide operating temperature range, high temperature resistance is 150 °C, low temperature resistance is -40 °C; (2) insulation and sheath must be resistant to battery solutions; (3) ) High insulation resistance and extremely low leakage current; (4) Good electromagnetic shielding and leakage protection effect; (5) Good flexibility, easy to move and lay

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