Mineral insulating cable used for 1E-stage K1 type nuclear measurement system in nuclear power plant safety shell

Abstract

The invention discloses a mineral insulating cable used for a 1E-stage K1 type nuclear measurement system in a nuclear power plant safety shell. The mineral insulating cable comprises a stainless steel sheath and a plurality of conductors arranged in the stainless steel sheath; gaps are formed between the conductors and the stainless steel sheath, and the gaps are filled with an insulating layer;and the conductors comprise a plurality of copper conductors, a nickel-chrome conductor and a nickel-aluminum conductor. The mineral insulating cable is insulating, high-temperature resistant, high instrength and tensile property, and has a wire compensating effect.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a mineral insulated cable used in the containment of a nuclear power plant. Background technique [0002] The energy crisis is a worldwide problem. For China's rapid development, energy has a particularly important strategic position in the national economy. my country's current energy supply and demand contradiction is sharp, the structure is irrational; energy utilization efficiency is low; primary energy consumption is dominated by coal, and the massive consumption of fossil energy has caused serious environmental pollution. In the next 15 years, meeting the continuous and rapid growth of energy demand and the clean and efficient utilization of energy will pose a major challenge to the development of energy technology. The National Medium- and Long-Term Science and Technology Development Plan clearly stated: "Promote diversification of the energy structure and increase energy ...

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Problems solved by technology

For example, the Chinese patent authorization announcement number is: CN203799706U, the authorization announcement date is: August 27, 2014, and the patent name is "a composite shielded cable with mineral insulated composite conductor", which discloses a cable with a copper conductor and an insulating dielectric layer. The material is magnesium oxide or aluminum oxide or silicon dioxide or their mixtures. It is a cable with high temperature resistance, high mechanical strength and long service life. The disadvantage of this cable is that the conductor has only one copper core, which has low strength and low tensile properties Relatively low and the patent does not have a compensation wire

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