Nuclear power plant diesel engine fuel system and rapid exhaust method

The invention relates to the technical field of nuclear power plant emergency diesel engines, and particularly discloses a nuclear power plant diesel engine fuel system and a rapid exhaust method. The method comprises the following operation steps that S1, threaded connection between a high-pressure oil pipe and an oil sprayer is cut off; s2, a transparent oil receiving box is installed at an oil outlet of the high-pressure oil pipe; s3, starting the diesel engine, wherein the diesel engine is driven by the starting motor to rotate; s4, the accelerator is kept at the maximum opening position; and S5, whether diesel oil is sprayed to the transparent oil receiving box in all the high-pressure oil pipes or not is judged, and if the judgment result is yes, all air in the fuel oil loop is exhausted. According to the method, air in the fuel oil pipeline can be quickly exhausted, the starting frequency is reduced, the starting success rate of the diesel engine is ensured, meanwhile, the service life of the starting