抽水蓄能电站对称岔管的流动阻力特性  

Flow resistance characteristics of symmetric fork tube used in a storage-pumped hydroelectric plant

作　　者：李玉梁[1] 李玲[1] 陈嘉范[1] 黄继汤[1] 

机构地区：[1]清华大学水利水电工程系,北京100084

出　　处：《清华大学学报（自然科学版）》2003年第2期270-272,280,共4页Journal of Tsinghua University(Science and Technology)

摘　　要：结合江苏宜兴抽水蓄能电站对称形钢岔管的试验任务,对4种分岔角的岔管水流的阻力特性进行研究。利用图像显示技术定性观察了岔管水流的流动情况,分析了其水头损失的原因。研究表明岔管水流损失因数随Re的增加而减小,当Re达到某一临界值时,损失因数不再变化,而且损失因数随分岔角的加大而加大,并给出了双机发电、双机抽水、单机发电、单机抽水4种典型工况下岔管水流阻力平方区的损失因数随分岔角变化的关系式。The flow resistance characteristics of symmetric fork tubes with four fork angles was investigated experimentally for the design of the Yixing storagepumped hydroelectric plant. Water flow in the fork tubes was observed qualitatively using imaging technology to analyze the water head loss mechanism. The results show that the water flow loss coefficients decreased with increasing Reynolds number until a critical Reynolds number. The water flow loss coefficients also increased with increasing fork angle. The relation between the resistance coefficients and the fork angles is given for four operating conditions: generating electricity with double, generating electricity with single machine, pumping water with double machines, pumping water with single machine.

关 键 词：流动阻力特性 抽水蓄能电站 对称岔管 图像显示技术 水头损失因数 阻力因数 

分 类 号：TV743[水利工程—水利水电工程] TV131.22