摘要
针对压水堆水力过渡过程,建立了三环路900 MW压水堆一回路系统水锤完整的数理模型及边界条件。采用特征线法,开发了FORTRAN水锤仿真程序,并对三泵并联在启动和切换工况下的水锤特性进行了数值研究。研究发现启动和切换过程中,发生2次流量突变、流向逆转、压差突变和振荡;流量突变和逆转均发生在阀门关闭支路,呈振荡衰减的波动趋势,最大倒流流量达1 370 m3/h;压差突变发生在后启动支路,压差振荡最大值达40kPa;并联泵启动方式决定倒流流量和压差突变大小。
In light of the hydraulic transition process, the complete mathematic model and boundary conditions for water hammer in primary circuit system of three-loop 900 MW PWR were established. The FORTRAN simulation program of water hammer was developed based on the method of characteristic line. And the numerical study on the water hammer characteristics of three pumps paralleled system was carried out under the conditions of startup and switching. The results indicate that two flow mutation and flow reversal occur on the closed branch of valve with a trend of attenuation of shock wave, and the maximum back flow is 1 370 m3/h. The results also show that two pressure mutation and oscillation occur on the later startup branch, and the maximum value of pressure mutation is up to 40 kPa. The starting way of paralleled pumps decides the value of back flow and pressure mutation.
作者
徐维晖
梁诚胜
王为术
路统
郭会军
XU Wei-hui LIANG Cheng-sheng WANG Wei-shu LU Tong GUO Hui-jun(Institute of Thermal Engineering Research, North China University of Water Resources and Electric Power,Zhengzhou of Henan Prov. 450011, China Hebei Huare Engineering Design Co. , LTD, Shijiazhuang of Hebei Prov. 050000, China)
出处
《核科学与工程》
CAS
CSCD
北大核心
2017年第1期161-167,共7页
Nuclear Science and Engineering
基金
国家自然基金(NO.51406026)
河南省高校科技创新团队支持计划资助(NO.16IRTSTHN017)
河南省科技创新人才计划(NO.154100510011)
关键词
特征线法
反应堆一回路
水锤
Method of characteristic line
Nuclear reactor primary loop
Water hammer
