Fire-resistant tensile power cable for rail transit

Abstract

A fire-resistant tensile power cable for rail transit includes three conductors, a conductor shield wraps the conductor, an insulating layer wraps the conductor shield, an insulating shield wraps theinsulating layer, an inner sheath wraps the insulating shield, a carrying body is sandwiched between the outer sides of the inner sheathes, 3 clamping slots are uniformly formed on the lateral surfaceof the carrying body, the inner sheathes are respectively embedded in the clamping slots, the outer sides of the carrying body and the inner sheathes are filled with a filling layer, the outer side of the filling layer is wrapped with an inner liner, the outer surface of the inner liner is brushed with an electromagnetic shielding coating, the outer side of the electromagnetic shielding coating is wrapped with a carbon fiber mesh, the outer side of the carbon fiber mesh is wrapped with a refractory layer, and the outer side of the refractory layer is wrapped with an outer sheath. In the invention, the carrying body can avoid torsional damage of the conductor and increase the stability and safety of the structure; the carbon fiber mesh can improve the tensile properties of the cable, at the same time, it is convenient to achieve cost control, and the overall anti-interference ability is strong.

Description

technical field [0001] The invention belongs to the technical field of power cables, and in particular relates to a fire-resistant and tensile-resistant power cable for rail transit. Background technique [0002] With the development of modern rail transit, the total mileage is longer and longer, the territory involved is wider and wider, and the maximum speed is faster and faster. The technical problems and construction environment are becoming more and more complex. The quality of equipment and power supply cables is directly related to the transportation capacity and safety of rail transit equipment. This type of cable has a large initial investment. It affects the operation of the power supply system of high-speed rail transit equipment, and the anti-interference, insulation, fire resistance, and tensile properties of cables will affect the operation of rail transit equipment. Among them, the anti-interference and insulation properties have been greatly improved. Howeve...

AI Technical Summary

Problems solved by technology

[0002] With the development of modern rail transit, the total mileage is longer and longer, the territory involved is wider and wider, and the maximum speed is faster and faster. The technical problems and construction environment are becoming more and more complex. The quality of equipment and power supply cables is directly related to the transportation capacity and safety of rail transit equipment. This type of cable has a large initial investment. It affects the operation of the power supply system of high-speed rail transit equipment, and the anti-interference, insulation, fire resistance, and tensile properties of cables will affect the operation of rail transit equipment. Among them, the anti-interference and insulation properties have been greatly improved. A good solution, but the fire resistance and tensile properties still seriously restrict the development of rail transit

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