长连接管对阻抗式调压室过流特性的影响  

Influence of long connecting pipe on the flow characteristics of throttled surge tanks

作　　者：李煜 杨绍佳 唐骁 王安城 安建峰[3] LI Yu;YANG Shaojia;TANG Xiao;WANG Ancheng;AN Jianfeng(PowerChina Huadong Engineering Co.,Ltd)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [2]国网新源浙江缙云抽水蓄能有限公司,浙江丽水321400 [3]南京水利科学研究院,江苏南京210024

出　　处：《大坝与安全》2022年第5期28-33,共6页Dam & Safety

摘　　要：某抽水蓄能电站下游布置阻抗式调压室,尾水洞与连接管通过岔管和弯道连接,布置型式特殊,水流条件复杂。考虑到带长连接管的阻抗式调压室布置复杂性和工程建设实际情况,研究了典型布置型式下的调压室底部流态及流量系数,得出了不同布置方案下调压室底部水流流速分布、压力分布和进出流流量系数的变化规律。A throttled surge tank is arranged downstream of a pumped storage power station,and the tailrace tunnel is connected with the connecting pipe through a bifurcated pipe and a bend.The layout pattern is special and the flow condition is complex.Considering the complexity of layout and the actual situation of engineering construction,this paper studies the flow regime and flow coefficient at the bottom of throttled surge tank with typical layout.The variation laws of flow velocity distribution,pressure distribution and coefficients of inflow and outflow at the bottom of throttled surge tank in different layout schemes are obtained.

关 键 词：调压室 长连接管 三维流场数值模拟 流量系数 

分 类 号：TV674[水利工程—水利水电工程]