Emergency water injection system of secondary side of nuclear power plant

The utility model discloses an emergency water injection system of a secondary side of a nuclear power plant. The emergency water injection system of the secondary side of the nuclear power plant includes a water suction pipe, a vehicle mobile pump and a water conveying hose. One end of the water suction pipe is connected to an inlet of the vehicle mobile pump while the other end is connected to a fixed water-taking port in the tail end of a first pipeline arranged on an auxiliary water-feeding tank in a protruding manner. One end of the water conveying hose is connected with an outlet of the vehicle mobile pump while the other end is connected to a fixed water injection port in the tail end of a second pipeline arranged on a steam generator in a protruding manner. Under a work condition exceeding a design reference, the emergency water injection system of the secondary side of the nuclear power plant provided by the utility model has the following beneficial effects that the water-taking port and the water i