Feedwater nozzle is the important component of steam generator,the feedwater nozzle bears the complicated fatigue loads leaded by transient of water supply during operation.

• 给水管嘴是蒸汽发生器关键部件之一,蒸汽发生器运行期间给水过程中的运行瞬态使得给水管嘴承受着复杂的疲劳载荷作用。