Secondary loop waste heat removal system and method based on concentrated seawater cooling

The invention discloses a marine nuclear power plant secondary circuit waste heat removal system and method based on concentrated seawater cooling, which serve as a safety system which can be automatically put into operation and effectively export reactor core waste heat under normal and accident shutdown working conditions of a reactor. The modification on the existing equipment is less; and the requirement on space is low. Based on the technical characteristics of a novel integrated secondary loop system, an active residual heat removal channel based on the secondary side of the steam generator and the concentrated seawater cooling system is newly constructed, the configuration multiplicity and diversity of the residual heat removal system can be further expanded, and the purpose of further improving the safety and reliability of the residual heat removal function of the marine nuclear power device is achieved. 本发明公开了一种基于集中海水冷却的船用核动力装置二回路余热排出系统及方法，作为一个可在反应堆正常以及事故停堆工况下自动投运并有效导出堆芯余热的安全系统，具有换热效率高，对现有设备改动少以及对空间