NUCLEAR REACTOR COOLANT PUMP AND NUCLEAR POWER PLANT HAVING SAME

摘要

The present invention discloses a nuclear reactor coolant pump that does not rely on an electric motor, but is operated by means of driving force generated inside a nuclear power plant, so a to be capable of maintaining the safety of the nuclear reactor when the nuclear reactor is operating normally and also in the event of an accident in the nuclear reactor. The nuclear reactor coolant pump comprises: a pump impeller rotatably installed in a first fluid passage of a nuclear reactor coolant system to circulate a first fluid inside the nuclear reactor coolant system; a drive unit receiving steam from a steam generator to generate driving force to rotate the pump impeller, and rotating about the same rotating shaft as the pump impeller to transfer the generated driving force to the pump impeller; and a steam supplying unit forming a passage between the steam generator and the drive unit to supply at least a portion of the steam released from the steam generator to the drive unit.

主权项

1. A reactor coolant pump, comprising:
a pump impeller rotatably installed at a primary fluid flow path of a reactor coolant system, in order to circulate the primary fluid in the reactor coolant system; a driving unit rotated about the same rotating shaft as the pump impeller by receiving steam from a steam generator so as to generate a driving force for rotating the pump impeller, and configured to transmit the generated driving force to the pump impeller; and a steam supplying unit configured to form a flow path between the steam generator and the driving unit, so as to supply at least part of steam discharged from the steam generator to the driving unit.