CAJ | 학술논문

蔺家坝泵站作为我国首座采用齿轮箱传动的大型灯泡贯流泵机组的泵站,为使水泵装置具有较优的水力性能,采用CFD仿真技术对该灯泡贯流泵机组的流道进行了优化设计和计算,并与水泵装置模型试验结果进行了比较;重点分析了灯泡体的支撑结构、叶片调角机构、主轴密封装置、轴承布置、齿轮箱及同步电动机等主要设备的结构设计.结果表明:CFD仿真技术应用于灯泡贯流泵机组的水力性能优化是可行的,蔺家坝泵站采用大型灯泡贯流泵机组,在设计净扬程2.4 m工况下,水泵装置效率达到78%,且气蚀性能良好,技术参数均达到了南水北调东线工程的要求;大型齿联传动灯泡贯流泵机组的成功运行,为国内其他大流量低扬程泵站的机组选型、设计及制造提供了可借鉴的经验.
린가패빙참작위아국수좌채용치륜상전동적대형등포관류빙궤조적빙참,위사수빙장치구유교우적수력성능,채용CFD방진기술대해등포관류빙궤조적류도진행료우화설계화계산,병여수빙장치모형시험결과진행료비교;중점분석료등포체적지탱결구、협편조각궤구、주축밀봉장치、축승포치、치륜상급동보전동궤등주요설비적결구설계.결과표명:CFD방진기술응용우등포관류빙궤조적수력성능우화시가행적,린가패빙참채용대형등포관류빙궤조,재설계정양정2.4 m공황하,수빙장치효솔체도78%,차기식성능량호,기술삼수균체도료남수북조동선공정적요구;대형치련전동등포관류빙궤조적성공운행,위국내기타대류량저양정빙참적궤조선형、설계급제조제공료가차감적경험.
Linjiaba Pump Station is the first station which adopts large-scale gear-driven bulb tubular pump set. In order to obtain optimum hydraulic performance of the pump set, its hydraulic loss was calculated by Computational Fluid Dynamics (CFD), and the results were compared with the model pump set test. The structures of bulb tubular pump supports, vane angle adjustment, main shaft seal apparatus, bearing arrangement, gearbox and synchronous motor were analyzed. The conclusion indicates that, the testing efficiency of the model pump set is 78%, the cavitation characteristic is fine at the net head(2.4 m) of pump station, and its hydraulic performances reach the index of the eastern route project of the South-to-North Water Diversion. The application of large-scale gear-driven bulb tubular pump set provides reference for type selection, design and manufacture of other pump stations of low lift and large flow capacity.