Nuclear power station computer monitor system double loop network

The utility model relates to a double loop network used in the computer motoring system of nuclear power station, comprising two independent loop-shaped networks with at least two switches each and each loop-shaped network is connected between the devices of a motoring computer and a nuclear power station. Applying the structure of the double loop network in which one switch of the loop-shaped network is connected with another switch in the other network, the reliability of communication of the unblocked network is improved a lot as two standard loop-shaped networks are mutually connected even if three arbitrary physical breakpoints exist in the network and the high requirements of equipment motoring system of nuclear power station is met. The double loop network of the utility model also has the advantages of greatly reducing the investment cost of the network system with simple structure and convenient use and maintenance, and establishing a substantial foundation for the development of the safety and technology of the nuclear power station with a wide scope of application that can be easily popularized and applied.