某三代核电厂安注泵电动机冷却多样化热阱方案探讨
Investigation of heat sink diversification for safety injection pump motor cooling in a third generation nuclear power plant
摘要：
在某三代核电厂设计中，为了满足核电厂的安全性要求，安全注入系统的安注泵需要设置多样化的热阱来满足不同工况下的安注泵电动机冷却需求。对核电厂中安注泵电动机可用热阱进行了分析，探讨了在电气厂房冷水系统设计的基础上采取一些改进措施，从而满足安注泵电动机在丧失最终热阱（H1）工况下的冷源需求的可行性。经过分析，由电气厂房冷水系统的风冷式冷水机组在H1工况下为安注泵电动机提供冷源的方案可行，满足安注泵电动机多样化热阱的功能要求，提高了安全注入系统的可靠性。
Abstract：
In a third generation nuclear power plant design, in order to meet the security requirements, the safety injection pumps of safety injection system needs to set up a variety of heat sink to meet cooling requirements under different conditions. Analyses the available heat sink in nuclear power plants for safety injection pump motor, discusses the feasibility of a number of improvement measures on the basis of the electrical building chilled water system design in order to meet the cooling need of safety injection pump motor under the loss of final heat sink(H1) condition. The analysis results show that aircooled chiller of the electrical building chilled water system can provide chilled water for safety injection pump motor under H1 condition, to meet the functional requirements of heat sink diversification for the safety injection pump motor and improve the reliability of safety injection system.
Keywords:nuclear power plant, diversification of heat sink, loss of final heat sink condition, safety injection pump, motor cooling, aircooled chiller