Long-life anti-radiation field bus cable used near nuclear island reactor core of nuclear power station

Abstract

The invention discloses a long-life anti-radiation field bus cable used near a nuclear island reactor core of a nuclear power station, and the long-life anti-radiation field bus cable sequentially comprises an outer sheath and a total inner sheath from outside to inside; the total inner sheath is internally provided with a tensile rope, a signal cable core and a power cable core, and the power cable core sequentially comprises a first inner sheath, a flame-retardant layer, a first insulating layer and a first conductor from outside to inside; the signal cable core sequentially comprises a second inner protective layer, an outer shielding layer, a middle shielding layer and an inner shielding layer from outside to inside, the inner shielding layer is provided with a core wire and a filling rope, and the core wire comprises a second conductor and a second insulating layer wrapping the second conductor. The cable provided by the invention is good in shielding effect and good in cable protection effect.

Description

technical field [0001] The application relates to the field of cables, in particular to a long-life anti-radiation fieldbus cable used near the nuclear island core of a nuclear power plant. Background technique [0002] Field bus is an industrial data bus that has developed rapidly in recent years. It mainly solves the digital communication among field devices such as intelligent instruments, controllers, and actuators in industrial fields, as well as these field control devices and advanced control systems. information transfer between systems. Fieldbus has a series of outstanding advantages such as simplicity, reliability, economy and practicality, and is widely used in current nuclear power plants. However, due to the relatively high radiation in nuclear power plants, cables used in nuclear power plant equipment need to consider shielding more performance, and the existing bus cables can only carry out signal transmission, but the linkage work of many devices sometimes r...

AI Technical Summary

Problems solved by technology

Fieldbus has a series of outstanding advantages such as simplicity, reliability, economy and practicality, and is widely used in current nuclear power plants. However, due to the relatively high radiation in nuclear power plants, cables used in nuclear power plant equipment need to consider shielding more performance, and the existing bus cables can only carry out signal transmission, but the linkage work of many devices sometimes requires not only signal transmission, but also power transmission. raised higher demands

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