Experimental study on hydraulic characteristic around trash rack of a pumping station

[摘要] This paper focuses on flow pattern around trash rack of intake of a pumping station project. This pumping station undertake the task of supplying up to 3,500,000 m3water per day for a megacity. Considering the large flow rate, high lift, multi-pipe supply and long-time operation in this water conveyance pumping station, we built a physical model test to measure the flow velocity and observe the flow pattern to verify the reasonability of preliminary design. In this test, we set 3 layers of current meters around each trash rack of intake in reservoir to collect the flow velocity. Furthermore, we design 2 operating conditions of 9 pumps to observe the change of flow pattern. Finally, we found the velocity data were in a normal range under 2 different operating conditions of the 9 pump units.

[发布机构] College of Water Conservancy and Hydropower, Hohai University, 1 Xikang Road, Nanjing, China^1;National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, 1 Xikang Road, Nanjing, China^2;Jialing River Tingzikou Water Resources and Hydropower Development Co. Ltd, 208, Xiaojiaba Avenue, Cangxi, Guangyuan, China^3;College of Mechanical and Electrical Engineering, Hohai University, 1 Jinlingbei Road, Changzhou, China^4

[效力级别] 生态环境科学

[关键词] Different operating conditions;Hydraulic characteristic;Long-time operation;Operating condition;Physical model test;Preliminary design;Pumping stations;Water conveyance