Nuclear power system and waste heat excavating pump thereof

The utility model discloses a waste heat excavating pump, including the pump body, install in the pump body the stator and with the spiral case of the exit linkage of stator, the runner cross -section of spiral case is crescent to the export of spiral case by entering the mouth of spiral case, a section of thick bamboo is discharged for having a tapered section of thick bamboo to the export and the section of thick bamboo intercommunication of discharging of spiral case, the cross -section of the section of thick bamboo of discharging is crescent to the export of the section of thick bamboo of discharging by the entry of the section of thick bamboo of discharging, discharge axis and the spiral case of a section of thick bamboo the exit mainstream to angle range be 10 to 60. The utility model discloses enlarge fluidic pressure, guaranteed the homogeneity of the inside fluid flow of spiral case, the fluid that can avoid spiral case export causes mobile disorderly and separation when discharging a section of thick bamboo getting into, and that has guaranteed to flow is smooth and easy. The utility model discloses reducing the fluidic pulsation, eliminating simultaneously owing to the flow losses that the motion of fluid swirl caused, the pump case atress improves, and the hydraulic efficiency of pump also can obviously improve. The utility model also discloses a nuclear power system of including above -mentioned waste heat excavating pump.