IE-grade instrument cable for third-generation passive nuclear power plant gentle environment and production method

Abstract

The invention provides an IE-grade instrument cable for a third-generation passive nuclear power plant gentle environment and a production method. The IE-grade instrument cable has the excellent electrical performance of being free of halogen, low in smoke, resistant to inflaming, low in poison and resistant to corrosion. The IE-grade instrument cable for the third-generation passive nuclear power plant gentle environment comprises a plurality of wire cores and one or more filling cores. Each wire core comprises one or more conductors, the outer wall of each conductor is wrapped by first wrapping tape, inner insulation layers and outer insulation layers are arranged outside the first wrapping tape in an extruding mode, and the first wrapping tape is wrapped by second wrapping tape. The wire cores and the filling cores are stranded to form a cable core. The cable core is provided with a wrapping tape layer, a filling layer, an inner shielding layer, an outer shielding layer, a wrapping layer and a protection sleeve layer from inside to outside in sequence. The production method of the IE-grade instrument cable comprises the following steps of conductor stranding, conductor wrapping, inner insulation layer and outer insulation layer extruding, inner insulation layer and outer insulation layer irradiation crosslinking, insulation wrapping, wire core and filling core cabling, filling layer extruding, shielding, protection sleeve layer extruding and protection sleeve layer irradiation crosslinking.

Description

technical field [0001] The invention relates to a cable and a production method, in particular to a third-generation passive nuclear power plant mild environment IE grade instrument cable and a production method. Background technique [0002] In the 21st century, the growth of population and economy in developing countries will inevitably bring about a huge increase in energy demand. At the same time, the fuel that provides more than 80% of the current electricity is gradually exhausted, and environmental protection requirements have a great impact on the use of fuel. limits. From the protection of resources, the improvement of environmental quality and the reliable supply of energy, nuclear energy has obvious advantages. [0003] In the special operating environment of nuclear power plants, as supporting cables for nuclear power plants, they must have strong thermal stability, good chemical stability, excellent radiation resistance, excellent aging resistance, moisture res...

AI Technical Summary

Problems solved by technology

[0002] In the 21st century, the growth of population and economy in developing countries will inevitably bring about a huge increase in energy demand. At the same time, the fuel that provides more than 80% of the current electricity is gradually exhausted, and environmental protection requirements have a great impact on the use of fuel. limits

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