含沙条件下泵站进水池控涡技术研究  

Study on Vortex Control Technology of Pump Sump Under Sediment Water Condition

作　　者：徐璐[1] 陈风伊 钱忠东[1] 郭志伟[1] XU Lu;CHEN Feng-yi;QIAN Zhong-dong;GUO Zhi-wei(State Key Laboratory of Water Resources Engineering and Management,Wuhan University,Wuhan 430072,Hubei Province,China)

机构地区：[1]武汉大学水资源工程与调度全国重点实验室,湖北武汉430072

出　　处：《中国农村水利水电》2024年第11期174-178,共5页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(52279090)。

摘　　要：含沙水流会对沿黄泵站造成严重的磨损破坏。泵站进水池漩涡的存在将会加重水泵磨损,严重影响水泵的运行寿命。为探究含沙条件下泵站进水池控涡技术,基于仿生学原理研发了一种带波状前缘翼型喇叭口的消涡装置,并通过模型试验,在清水和含沙水两种环境下,研究波状前缘翼型喇叭口对进水池内漩涡的影响特性。结果表明:无论在清水还是含沙水条件下,波状前缘翼型喇叭口均能有效抑制附底涡的产生、降低附底涡的出现频率、减小进水管内水流的预旋强度,有利于改善水泵的进水流态,防止泥沙磨损的进一步加剧。Sediment water can cause serious wear and damage to pump stations along the Yellow River.The vortices in the pump sump will exacerbate pump wear and greatly affect the operational lifespan of the pumps.In order to investigate vortex control technology in pump sump under sediment water condition,a vortex-suppressing intake bell mouth with wavy leading-edge hydrofoils inspired by bionics is developed.The impact of the bell mouth with wavy leading-edge hydrofoils on vortices in the pump sump is analyzed through model experiments under both clear water and sediment water conditions.The results indicate that,regardless of clear water or sediment water condition,the bell mouth with wavy leading-edge hydrofoils effectively suppresses submerged vortex,reduces the frequency of their occurrence,and decreases the pre-swirl intensity within the inlet pipe.It improves the inlet flow patterns inside the pump,and then prevents further exacerbation of erosive wear.

关 键 词：泵站进水池 含沙水 附底涡 波状前缘翼型 

分 类 号：TV136[水利工程—水力学及河流动力学]