高扬程泵出口水流动力切断的过渡过程计算  

Calculation of a Transient Broken Process for a High Head Pump Outlet Power

作　　者：吴建华[1] 王俊武 

机构地区：[1]太原理工大学建筑与环境工程学院 [2]运城市水利勘测设计研究院

出　　处：《农业机械学报》2004年第4期70-73,83,共5页Transactions of the Chinese Society for Agricultural Machinery

摘　　要：根据水锤计算的特征线法 ,采用当量管道法和调整波速法的管路分段工艺 ,建立了长距离输水管路的水力过渡过程计算模型 ,对水柱分离及其在弥合现象的物理模型的研究 ,确保了补气阀节点处水锤压力数值模拟的实现。相关成果为供水工程泵系统压力管路安全防护措施的确立提供了有力的技术支持 ,运行实践表明 :缓闭阀结合补气阀的防护措施安全可靠 ,满足工程运行的需要。A calculation model for long-distance water supplying pipe was developed by the subsection dividing technology of the pipe equivalent method and the wave-velocity adjusting method based on the concept of the engine line method used for water hammer calculation. By investigating the physical model of water-column separation and combination, the simulation process of the pressure change of water hammer at the enter-exhaust valve node was established. The research results of this work provided a technical support for the establishment of safety measures of pressurized pipe system in the water supply engineering. The working practice of this system showed that the protection measure by combination of slow-closed value and enter-exhaust value was safe and reliable and satisfied the operating requirements.

关 键 词：高扬程泵 水力过渡过程 计算方法 补气阀 缓闭阀 数值模拟 压力管路 海鑫供水工程 

分 类 号：TU991.3[建筑科学—市政工程]