A method for manufacturing safe fire-resistant medium and high voltage cables

A technology for medium and high voltage cables and manufacturing methods, which are applied in the manufacture of cables/conductors, power cables with shielding layers/conducting layers, circuits, etc., can solve the problems of not being able to save time for rescue work, too simple structure, and poor heat insulation effect. , to achieve the effect of round shape, enhanced mechanical strength, and improved electrical insulation performance
CN102938276BActive Publication Date: 2015-08-12SICHUAN MINGXING CABLE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SICHUAN MINGXING CABLE
Publication Date
2015-08-12

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Abstract

The invention discloses a manufacturing method of safety fire-resistant medium and high voltage cables. The manufacturing method includes steps of selecting, drawing, annealing, conductor stranding, coextruding and covering of inner shield layers, insulating layers and outer shield layers, setting metal shield layers, isolated-phase extruding of fire-resistant isolated layers, lapping of first tape layers, cabling stranding and cabling tape lapping, extruding of oxygen isolating layers, extruding of fire-resistant isolating layers, lapping of second tape layers, lapping of metal armor layers, lapping of third tape layers and extruding of outer sheath layers. The medium and high voltage cables manufactured by the method have good heat insulation effect when laid on buildings, fire resistance of the cables is improved greatly, damages to an electric power system due to accidents such as fires and natural disasters can be delayed, and time can be gained for rescue work.
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Description

technical field

[0001] The invention relates to the technical field of cable manufacturing, in particular to a method for manufacturing a safe fire-resistant medium and high voltage cable. Background technique

[0002] Entering the 21st century, my country's infrastructure has entered a golden age of construction. Today, with the rapid expansion of population and urbanization, in order to save resources, urban construction has to develop towards clustering, scale and high-level development. In key national and civil projects such as stations, airports, subways, nuclear power plants, business hotels, hospitals, shopping malls, residential buildings, etc., in addition to considering their necessary functions and environmental comfort, safety is increasingly on the agenda , Shanghai "11.15" catastrophic fire accident has brought people a very profound warning. As a special cable, fire-resistant cables are used in occasions that require a high safety factor, and have been widel...

Claims

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