核电站主蒸汽流量测量及标定的研究  

Study on Measurement and Calibration of Main Steam Flow in Nuclear Power Plant

作　　者：全胜 QUAN Sheng(China National Nuclear Maintenance Co.,Ltd.,Lianyungang 222000,China)

机构地区：[1]中核检修有限公司,连云港222000

出　　处：《自动化与仪表》2021年第9期45-47,53,共4页Automation & Instrumentation

摘　　要：某核电站机组采用了压水堆核电机组,其主蒸汽流量设计单环路为1600 t/h,设计采用的是德国SKI公司生产的全插入式DF32型节流装置。该类型的流量计在机组动态试验期间,受机组负荷瞬态变化产生的水锤冲击和管道本身的振动疲劳等影响发生断裂,影响蒸汽发生器液位调节。结合核电站蒸汽发生器蒸汽排出接管上部结构特点,利用已有的差压测点,通过计算工程标定方法,获得测量值和物理参数的对应关系,实现对饱和蒸汽流量的测量。Pressurized water reactor nuclear power plant is used in a nuclear power plant,the main steam flow is designed for a single loop of 1600 t/h.The design adopts the DF32 throttling device of full insertion type produced by SKI company in Germany.During the dynamic test of the unit,the flowmeter of this type is broken due to the impact of the water hammer caused by the transient change of the unit load and the vibration fatigue of the pipe itself,which affects the level regulation of the steam generator.Combined with the superstructure characteristics of the steam discharge nozzle of the steam generator in nuclear power plant,the corresponding relationship between the measured values and physical parameters is obtained by using the existing differential pressure measuring points and calculating the engineering calibration method,so as to realize the measurement of saturated steam flow rate.

关 键 词：核电站 主蒸汽流量 DF32型节流装置 流量计 蒸汽流量 

分 类 号：TH814[机械工程—仪器科学与技术]