Cable for nuclear power station

Abstract

The invention discloses a cable for a nuclear power station. The cable for the nuclear power station comprises a plurality of strands of conductors, a high insulation layer, a first insulation layer,a second insulation layer, a filling layer, a shielding layer, a sheath, a winding armor layer, a protection layer and an outer sheath layer. The conductor is coated with the high insulation layer, the high insulation layer is coated with the first insulation layer, the first insulation layer is coated with the second insulation layer, the multi-strand conductors, the high insulation layer, the first insulation layer and the second insulation layer form insulation wire cores, the filling layer fills the gap among the insulation wire cores, and the filling layer is coated with the shielding layer. The sheath, the winding armor layer, the protection layer and the outer sheath layer sequentially coat the shielding layer. The insulation wire core can be well protected, and the cable has excellent high temperature resistance, flame retardant property, radiation aging resistance and mechanical property.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant cables, in particular to a cable used in nuclear power plants. Background technique [0002] From the analysis of my country's wire and cable industry, on the current level of cable manufacturing technology, and further improving equipment and product development, the localization rate of wire and cable can reach more than 95%. According to the Shanghai Electric Cable Research Institute, at present, the annual demand for cables for nuclear power plants in my country is more than 6,000 km, and it will increase at a rate of 20% every year. The international market demand is more than 300,000 km. Cables have good economic value and social benefits, but the flame retardant properties of existing cables for nuclear power plants are poor, and long-term radiation aging performance and safety still need to be improved. Contents of the invention [0003] In view of the shortcomings of the pri...

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Problems solved by technology

[0003] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a cable for nuclear power plants, which is used to solve the problems of poor flame retardancy, long-term radiation aging performance and safety of cables for nuclear power plants in the prior art. Issues that still need to be improved

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