南水北调与水利科技
南水北調與水利科技
남수북조여수리과기
SOUTH-TO-NORTH WATER
2014年
5期
36-40
,共5页
雍成林%汤正军%朱红耕%张仁田
雍成林%湯正軍%硃紅耕%張仁田
옹성림%탕정군%주홍경%장인전
贯流泵装置%结构型式%虹吸出水%对比试验%CFD
貫流泵裝置%結構型式%虹吸齣水%對比試驗%CFD
관류빙장치%결구형식%홍흡출수%대비시험%CFD
t ubular pumping system%st ructural type%siphon outflow%com parison test%CFD
广泛应用于低扬程和特低扬程泵站的贯流泵装置，传统设计基本采用平直管出水的结构型式。针对城市防洪泵站扬程低、年运行时间短、安全性和可靠性要求高的特点，提出了5种新型虹吸式出水流道的贯流泵装置结构型式，它们具有结构简单、断流可靠、安装检修方便、维修和养护成本低等优点。在保持模型泵不变的情况下，采用CFD 数值模拟技术，进行了不同结构型式的虹吸式出水贯流泵装置数值分析、优化水力设计和性能预测。根据优化设计结果，在高精度试验台上进行了虹吸出水和直管出水的竖井贯流泵装置模型对比试验。试验结果表明，两种竖井贯流泵装置的水力性能基本接近，平直管出水和虹吸式出水都是合适的低扬程泵站出水流道结构型式；在特低扬程情况下，采用虹吸式出水流道的泵装置结构型式具有更明显的优势。
廣汎應用于低颺程和特低颺程泵站的貫流泵裝置，傳統設計基本採用平直管齣水的結構型式。針對城市防洪泵站颺程低、年運行時間短、安全性和可靠性要求高的特點，提齣瞭5種新型虹吸式齣水流道的貫流泵裝置結構型式，它們具有結構簡單、斷流可靠、安裝檢脩方便、維脩和養護成本低等優點。在保持模型泵不變的情況下，採用CFD 數值模擬技術，進行瞭不同結構型式的虹吸式齣水貫流泵裝置數值分析、優化水力設計和性能預測。根據優化設計結果，在高精度試驗檯上進行瞭虹吸齣水和直管齣水的豎井貫流泵裝置模型對比試驗。試驗結果錶明，兩種豎井貫流泵裝置的水力性能基本接近，平直管齣水和虹吸式齣水都是閤適的低颺程泵站齣水流道結構型式；在特低颺程情況下，採用虹吸式齣水流道的泵裝置結構型式具有更明顯的優勢。
엄범응용우저양정화특저양정빙참적관류빙장치，전통설계기본채용평직관출수적결구형식。침대성시방홍빙참양정저、년운행시간단、안전성화가고성요구고적특점，제출료5충신형홍흡식출수류도적관류빙장치결구형식，타문구유결구간단、단류가고、안장검수방편、유수화양호성본저등우점。재보지모형빙불변적정황하，채용CFD 수치모의기술，진행료불동결구형식적홍흡식출수관류빙장치수치분석、우화수력설계화성능예측。근거우화설계결과，재고정도시험태상진행료홍흡출수화직관출수적수정관류빙장치모형대비시험。시험결과표명，량충수정관류빙장치적수력성능기본접근，평직관출수화홍흡식출수도시합괄적저양정빙참출수류도결구형식；재특저양정정황하，채용홍흡식출수류도적빙장치결구형식구유경명현적우세。
Tubular pum ping systems w hich are w idely applied in the low and extra-low head pum ping stat ions usually adopt the st ructure of straight outflow s in the conversional design. In order to meet the requirements of low head, short annual operation time, and high safety and reliability in the municipal flood cont rol pumping stations, five structural types of tubular pumping systems with siphon outflows w ere proposed, and t hey have the advantages of simple structure, reliable shut-down device, con-venient installation and maintenance, and cheap cost of operation and management. Under the condition of unchanged model pump, CFD simulation technology was used to perform the numerical analysis, optimal hydraulic design, and performance predic-tion of various tubular pumping systems w ith siphon outflow s. According to the optimization results, acomparison test of the shaft-t ype tubular pumping systems with straight and siphon outflows was carried out in the model test stand with high accura-cy. The model test results showed that hydraulic performances of two outflows are similar so that the structural types of st raight and siphon out flow s are both suitable for the low head pumping station w hen the t ubular pumping system is used. For the extra- low head pum ping station, the tubular pumping systems with siphon outflows have significant advantages compared with those with straight outflows.
