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。 Combined with the test task of the symmetrical steel bifurcation pipe of Jiangsu Yixing Pumped Storage Power Station, the resistance characteristics of bifurcated water flow at four bifurcated angles were studied. The flow of bifurcated water flow was qualitatively observed by image display technology, and the reason of water head loss was analyzed. The results show that the water flow loss factor of bifurcated pipe decreases with the increase of Re. When Re reaches a certain critical value, the loss factor no longer changes, and the loss factor increases with the increase of bifurcation angle. , Double pumping, single power generation, single pumping four typical conditions bifurcated pipe flow resistance squared loss factor with the change of the branch angle relationship.