Radiation resistant power cable for nuclear island of nuclear plant and process for producing the same

Abstract

The invention relates to the bear radiation power cable which used in the nuclear island of the nuclear power station and its preparation method, which characteristic lies in that when the cable core section is circular, the outer of cable core covers the inner insulation layer; the outer of the inner insulation layer covers the outer insulation layer, between the outer insulation layer and the belt fills with the feed; the outer of the belt has a bandage; when the cable core section is fan-shaped, the belt directly covered the outer of the out insulation layer, and saved the stuffing. The flame-resistant bear radiant heat material which the outer bandage of the invention used through the electron accelerator radiation cross-linking craft, using the Malay acid anhydride as stem grafting, the most elongation ratio below 90% when the material under the loading, surpasses chemistry and so on crossing linking ways. The merit of the invention is the good radiation resistance and the good earthquake resistance and the bending property.

Description

technical field [0001] The invention relates to a radiation-resistant power cable used in a nuclear island of a nuclear power plant and a preparation method thereof, belonging to the technical field of cables. Background technique [0002] Nuclear power plants only need to consume a small amount of nuclear fuel to generate a large amount of electrical energy, and the cost per kilowatt-hour of electrical energy is more than 20% lower than that of thermal power plants. Countries around the world are currently flirting with the idea of ​​nuclear power because of the rising costs of oil, gas and coal. According to my country's electric power development plan, the installed capacity of nuclear power will increase from the current 2.5% to 4% of the installed capacity in 2020. However, many key technologies of nuclear power plant construction are still restricted by developed countries, and the radiation-resistant power cables used in nuclear power plant nuclear islands as key pro...

AI Technical Summary

Problems solved by technology

However, many key technologies of nuclear power plant construction are still restricted by developed countries, and the use of radiation-resistant power cables in the nuclear island of nuclear power plants as a key product for nuclear power plant construction cannot be imported into China.

[0003] In terms of use, the types of cables used in nuclear power are basically the same as those in general thermal power plants, but their material composition and test items are quite different.

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