特殊水锤防护措施在小浪底电站技术供水系统中的应用  

Special Water-hammer Protection Method Using in Technical Water Supply System of Xiaolangdi Powerstation

作　　者：郑莉玲[1] 王胜军[1] 

机构地区：[1]水利部黄河水利委员会勘测规划设计研究院,河南郑州450003

出　　处：《大电机技术》2000年第4期40-42,共3页Large Electric Machine and Hydraulic Turbine

摘　　要：小浪底电站厂内供回水系统管线布置长且凸拐点多 ,管线走向复杂 ,回水池水位变幅较大且水泵的扬程高 ,水泵系统失电后在沿回水管线凸拐点等局部位置出现严重的液柱分离 ,造成很高的压力上升 ,必将对系统中的设备和管道造成严重的破坏 ,以致影响整个电站的安全稳定运行。分析认为 :厂内回水系统必须采取水锤防护措施 ,以确保电站汛期的正常运行。根据系统管线布置的特殊性 ,采用了一种特殊水锤防护措施即连通管 ,既避免了设置单向调压塔的困难 ,又减轻了水锤的危害。The water supply and returning system in Xiaolangdi powerhouse have to be long length and complicated piping distribution. besides this, the water level in returning reservoir changes greatly and pumps have high water head. so if the pump power cut occurred suddenly, the serious water column off_flow was caused, and the pressure of air bubble collapsing reached ore than 350mH2O which is the primary reason that cause the water supply and returning system accident. It is suggested in this paper that the special water hammer protection method “connected pipe” shall be adopted to eliminate the harm of water hammer and avoid one_side_flow surge tank which is difficult to have sufficient space to be installed in the traffic tunnel of xiaolangdi underground powerstation.

关 键 词：水泵站 水锤防护 单向调压塔 连通管 供水系统 

分 类 号：TV732.5[水利工程—水利水电工程]