| 叶片角度对输水泵站泵装置水力性能影响分析 |
| |
| 引用本文： | 施伟,成立.叶片角度对输水泵站泵装置水力性能影响分析[J].排灌机械工程学报,2020,38(4):372-377. |
| |
| 作者姓名： | 施伟 成立 |
| |
| 作者单位： | 南水北调东线江苏水源有限责任公司,江苏 南京210019;江苏省泵站工程技术研究中心,江苏 南京210019;扬州大学水利科学与工程学院,江苏 扬州225000 |
| |
| 基金项目： | 国家自然科学基金资助项目(51779214);江苏省“333工程”科研资助项目(BRA2018382);江苏省工信厅2018年度第二批省级工业和信息产业转型升级专项。 |
| |
| 摘 要： | 为研究输水泵站泵装置水力性能受叶片角度变化的影响,采用CFD方法模拟全流道泵装置水力性能,分析设计流量工况下叶片角度变化对进水流道、出水流道流动及叶轮内部流动特性和水力性能的影响.结果表明:在设计流量工况下,叶片角度偏离设计工况角度,叶轮进口近轮毂区存在回流、脱流;叶片角度偏离设计工况角度越大,进水流道、出水流道内水流流态越差,水力损失越大.当叶片角度调节为-8°工况时,与叶片角度-0°工况比较,进水流道和出水流道水力损失相对值最大,分别为1.28和2.89.即叶片同等偏离角度下,出水流道水力损失增大幅度较进水流道更加明显.对比数值模拟结果与模型试验结果得出,在设计流量工况,叶片角度为0°时,扬程相对误差为1.2%,效率相对误差为2.1%,两者吻合较好.
|
| 关 键 词： | 轴流泵 全流道 水力性能 数值模拟 模型试验 |
| 收稿时间： | 2019-08-22 |
Analysis of effect of blades angle on hydraulic performance for pumping system of water diversion pumping station |
| |
| SHI Wei,CHENG Li.Analysis of effect of blades angle on hydraulic performance for pumping system of water diversion pumping station[J].Journal of Drainage and Irrigation Machinery Engineering,2020,38(4):372-377. |
| |
| Authors: | SHI Wei CHENG Li |
| |
| Institution: | 1. The Eastern Route of South-to-North Water Diversion Project Jiangsu Water Source Co. Ltd., Nanjing, Jiangsu 210019, China; 2. Jiangsu Engineering and Technology Center for Pumping Station, Nanjing, Jiangsu 210019, China; 3. School of Hydraulic Science & Engineering, Yangzhou University, Yangzhou, Jiangsu 225009, China |
| |
| Abstract: | In order to investigate the effect of blades angle on the hydraulic performance for the pumping system of water diversion pumping station,the pumping system with the whole flow passage was simulated by computational fluid dynamics technology.The effect of changing blade angles on flow pattern and hydraulic performance of inlet passage,outlet passage and impeller interior was analyzed based on the simulation result.The result indicates that the recirculation is found at the area near hub while the blade angle deviates design values.The flow pattern of flow passage becomes bad and hydraulic loss of flow passage increases while the deviation angle increases.When the blade angle is adjusted to-8°,the relative value of hydraulic loss of the inlet and outlet passages is the largest,which is 1.28 and 2.89 respectively(compared with the blade angle-0°condition).At the same deviation angle,the relative value of hydraulic loss of outlet passage is larger than that of inlet passage.The simulation result of design condition was compared with the test result,which shows that the relative uncertain value of head is 1.2%and the relative uncertain value of effectiveness is 2.1%.It means that the simulation result has good agreement with the test result. |
| |
| Keywords: | axial flow pump whole flow passage hydraulic performance numerical simulation model test |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《排灌机械工程学报》浏览原始摘要信息 |
| 点击此处可从《排灌机械工程学报》下载免费的PDF全文 |
|
