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| 泵站前池非连续挑流消能防沙技术措施 | |
| 引用本文： | 高传昌,王玉川,石礼文,刘伟,杨洪存.泵站前池非连续挑流消能防沙技术措施[J].排灌机械,2011,29(2):133-138. |
| 作者姓名： | 高传昌 王玉川 石礼文 刘伟 杨洪存 |
| 作者单位： | 1. 华北水利水电学院电力学院,河南郑州,450011 2. 清华大学水沙科学与水利水电国家重点实验室,北京,100084 3. 平阴田山电灌管理处,山东济南,250400 |
| 基金项目： | 水利部公益性行业科研专项经费项目(200801011); 济南市科技攻关项目(061084) |
| 摘 要： | 通过前池水力过流情况分析和改造前现场试验,发现前池流态紊乱导致了田山一级泵站机组的剧烈振动和颤振.提出了由非连续底坎、非连续挑流墩和两道压水板组成的非连续挑流消能防沙技术措施,并对改造后泵站的运行情况进行了现场试验.试验结果表明,采用技术措施改造后,前池、进水池流态和水泵进水条件得到了显著的改善,池中断面流速分布趋于均匀且断面紊动能量明显降低;测试机组单泵流量平均提高了0.14 m3/s,水泵效率平均提高了4.99%,泵站装置效率平均提高了3.88%;消除了泵体颤振,使水泵喇叭口振动标准由4.5级烈度降低到1.8级烈度;减缓了前池和进水池泥沙淤积,使试验前池和进水池清淤时间由改造前的运行800h延长至改造后的运行1 300 h,防沙效果良好.非连续挑流消能防沙措施为多泥沙河流泵站技术改造提供了一种简单有效的方法. |
| 关 键 词： | 泵站前池 流态 非连续 挑流消能 防沙 振动标准 |
Technical measure for discontinuous trajectory bucket energy dissipation and sediment prevention at forebay of pumping station |
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| Gao Chuanchang,Wang Yuchuan,Shi Liwen,Liu Wei,Yang Hongcun.Technical measure for discontinuous trajectory bucket energy dissipation and sediment prevention at forebay of pumping station[J].Drainage and Irrigation Machinery,2011,29(2):133-138. | |
| Authors: | Gao Chuanchang Wang Yuchuan Shi Liwen Liu Wei Yang Hongcun |
| Institution: | Gao Chuanchang1,Wang Yuchuan2,Shi Liwen3,Liu Wei3,Yang Hongcun3(1.College of Electric Power,North China University of Water Conservancy and Hydropower,Zhengzhou,Henan 450011,China,2.State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,3.Pingyin Tianshan Electrical Irrigation Agency,Jinan,Shandong 250400,China) |
| Abstract: | Based on hydraulic flow analysis of forebay and field tests before rehabilitation,the turbulent flow pattern in Tianshan first level pumping station was found,which caused intensive vibration and intermittent vibration of pump units.Then the technical measure of discontinuous trajectory bucket energy dissipation and sediment prevention(DTBED & SPTM),which involves discontinuous bottom baffle sills,discontinuous trajectory bucket piers and two pressure plates,was presented.The experimental results after reha... |
| Keywords: | forebay of pumping station flow patterns discontinuous trajectory bucket energy dissipation sediment prevention vibration standard |
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