| 大型泵站新型钟形进水流道流动特性的研究 |
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| 引用本文： | 常景彩,王志强,李兴平,李兵,张家明.大型泵站新型钟形进水流道流动特性的研究[J].水力发电学报,2011,30(1). |
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| 作者姓名： | 常景彩 王志强 李兴平 李兵 张家明 |
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| 作者单位： | 1. 山东大学能源与动力工程学院,济南,250100
2. 山东电力研究院,济南,250002 |
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| 摘 要： | 钟形进水流道是我国大型泵站采用的两种最主要的进水流道形式之一.由于我国西南部地区年平均气压较低,在不增加基建投资及保障泵装置正常运行的要求下,提出了一种新的使通流面积变化率K趋近于常数的设计理论方法,对泵站的进水流道进行设计,并通过数值计算对新型钟形进水流道的流动特性进行了研究.结果表明:新型钟形进水流道的出口速度分布均匀度及速度加权平均角非常接近最理想值,完全满足叶轮室进口的流动要求;该设计方法已成功地用于云南某电厂4 × 600MW机组泵站进水流道的设计.研究结果为完善和简化传统钟形进水流道关键通流部件的设计提供了重要的理论依据.
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| 关 键 词： | 水力机械 新型钟形进水流道 通流面积变化率 流动特性 |
Study on hydraulic characteristics of new bell suction duct in large-scale pumping stations |
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| CHANG Jingcai
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WANG Zhiqiang
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LI Xingping
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LI Bing
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ZHANG Jiaming.Study on hydraulic characteristics of new bell suction duct in large-scale pumping stations[J].Journal of Hydroelectric Engineering,2011,30(1). |
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| Authors: | CHANG Jingcai WANG Zhiqiang LI Xingping LI Bing ZHANG Jiaming |
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| Affiliation: | CHANG Jingcai1,WANG Zhiqiang1,LI Xingping2,LI Bing1,ZHANG Jiaming1(1.School of Energy & Power Engineering,Shandong University,Jinan 250100,2.Shandong Electric Power Research Institute,Jinan 250002) |
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| Abstract: | Bell suction duct is one of the most important forms adopted in large-scale pumping stations.To enhance economic benefit and running stability in the lower atmospheric pressure areas such as Yunnan,a new design principle was put forward in this paper.The main idea was to keep the stream-wise decreasing rate of the flow cross-sectional area approximately a constant.Numerical analyses were carried out to study the hydraulic characteristics of the new bell suction duct.The results show that at the duct outlet ... |
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| Keywords: | hydraulic machinery new bell suction duct change rate of flow area hydraulic characteristics |
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