贯流泵站液压快速闸门断流停泵过渡过程分析  

Transient process of tubular pumping station with quick-stop gate breaking flow while pump is off

作　　者：陈松山[1] 周正富[2] 何钟宁[2] 葛强[1] 严登丰[1] 

机构地区：[1]扬州大学能源与动力工程学院,江苏扬州225009 [2]扬州大学水利科学与工程学院,江苏扬州225009

出　　处：《河海大学学报（自然科学版）》2008年第2期179-184,共6页Journal of Hohai University(Natural Sciences)

基　　金：国家自然科学基金(50279045);水利部科技创新项目(SCXC2002-06)

摘　　要：基于刚性水锤理论,分析了贯流泵站泵装置水力特性、泵机组动力学特性,并运用最小二乘曲面拟合方法仿真模拟了水泵全特性曲线;建立了贯流泵站液压快速闸门断流停泵过渡过程计算的有限差分非线形方程组,并采用牛顿-莱福森(Newton-Raphson)迭代法对方程组进行求解.利用该数学模型数值模拟了南水北调淮安第三抽水站贯流泵机组停泵过渡过程,结果表明,该数学模型能较好地模拟贯流泵站停泵过渡过程.The hydraulic characteristics and dynamic characteristics of a pump unit were analyzed using the incompressible water hammer theory. The least square surface fitting method was used in the simulation of pump complete characteristic curves. Finite-difference non-linear equations of the transient process in a tubular .pumping station with a quick-stop gate breaking flow while pump is off were established and solved using the Newton-Raphson iterative method. The application of the mathematical model to the transient process of Huai＇ an third pumping station of the eastern mute of the South to North Water Diversion Project during shutdown of pumps indicates that the model is applicable to the simulation of this kind of transient process and has significant engineering value.

关 键 词：贯流泵站 液压闸门 停泵过程 全特性曲线 动态特性 数学模型 淮安第三抽水站 

分 类 号：TV675[水利工程—水利水电工程]