排灌机械工程学报
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排灌机械工程学报  2011, Vol. 29 Issue (2): 133-138    DOI: 10.3969/j.issn.1674—8530.2011.02.009
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泵站前池非连续挑流消能防沙技术措施
高传昌1, 王玉川2, 石礼文3, 刘 伟3, 杨洪存3
(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)
Technical measure for discontinuous trajectory bucket energy dissipation and sediment prevention at forebay of pumping station
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, China; 3. Pingyin Tianshan Electrical Irrigation Agency, Jinan, Shandong 250400, China)
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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800 h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.
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高传昌
王玉川
石礼文
刘 伟
杨洪存
关键词泵站前池   流态   非连续   挑流消能;防沙   振动标准     
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 intermittentvibration 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 afterrehabilitation show that, with the application of the technical measure, flow patterns of forebay and sump, as well as the pump intake condition are significantly improved, velocity distribution of forebay middle section is uniform and turbulent energy is decreased obviously. The flow rate of single pump, the pump efficiency and device efficiency of pumping station are averagely increased 0.14 m3/s, 4.99% and 3.88%, respectively. The intermittent vibration of pump body is eliminated, and the vibration standard of pump bell mouth intake decreases from intensity stage 4.5to intensity stage 1.8. The sediment depositionof forebay and sump is slowed down, and the sediment removing time is extended from 800 hours before rehabilitation to 1 300 hours after rehabilitation, which proves effective in sediment prevention. The DTBED & SPTM offers a simple yet effective approach to technical rehabilitation of pumping station technological rehabilitation on rivers with high sediment content.
Key wordsforebay of pumping station   flow patterns   discontinuous   trajectory bucket energy dissipation   sediment prevention   vibration standard   
收稿日期: 2010-06-11; 出版日期: 2011-03-30
基金资助:

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)

通讯作者: 高传昌(1957-) ,男,河北邯郸人,教授,博士( gcc@ ncwu.edu.cn) , 主要从事流体机械及工程教学与研究.   
作者简介: 王玉川( 1983 ),男,河南林州人,博士研究生 ( yc.wang@ qq.com),主要从事流体机械及工程研究.
引用本文:   
高传昌,王玉川,石礼文等. 泵站前池非连续挑流消能防沙技术措施[J]. 排灌机械工程学报, 2011, 29(2): 133-138.
GAO Chuan-Chang,WANG Yu-Chuan,SHI Li-Wen et al. Technical measure for discontinuous trajectory bucket energy dissipation and sediment prevention at forebay of pumping station[J]. Journal of Drainage and Irrigation Machinery Engin, 2011, 29(2): 133-138.
 
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