刘超,周庆连,钱均,金燕,谢传流.双向流道立轴潜水泵系统流动特性研究[J].农业机械学报,2016,47(10):59-65,58.
Liu Chao,Zhou Qinglian,Qian Jun,Jin Yan,Xie Chuanliu.Flow Characteristics of Two-way Passage Vertical Submersible Pump System[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(10):59-65,58.
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双向流道立轴潜水泵系统流动特性研究   [下载全文]
Flow Characteristics of Two-way Passage Vertical Submersible Pump System   [Download Pdf][in English]
投稿时间:2016-03-02  
DOI:10.6041/j.issn.1000-1298.2016.10.008
中文关键词:  泵系统  潜水泵  双向流道  数值模拟
基金项目:“十二五”国家科技支撑计划项目(2015BAD20B01)、江苏省水利科技重点项目(2013049)和江苏高校优势学科建设工程项目
作者单位
刘超 扬州大学 
周庆连 连云港市水利规划设计院有限公司 
钱均 江苏省秦淮河水利工程管理处 
金燕 扬州大学 
谢传流 扬州大学 
中文摘要:为探索将潜水电泵和双向流道泵装置结合在一起的双向流道潜水电泵系统,通过CFX软件对该系统进行全流道数值模拟,获得了系统内的流动特性,并预测了泵装置的水力性能。对进水流道内加设不同导流措施的水流特性进行了分析,结果表明,加设椭圆线导流锥的进水流道出口流速分布均匀度效果最好,能够防止有害旋涡,保证水泵运行的进水条件。应用特别设计的、单边18°的大扩散角出水室,有效地抑制了脱流和水力损失,确保水泵系统整体效率水平。在高精度水力机械试验台进行了模型试验。试验结果表明,泵装置扬程为3.11m,流量为256L/s,泵装置效率达到71.9%,正、反向分别高于可逆式双向潜水泵装置7和13个百分点。说明双向流道配立轴潜水泵装置具有良好的工程应用价值。模型试验结果和性能预测结果在高效区范围内吻合,数值计算得到较好的验证。
Liu Chao  Zhou Qinglian  Qian Jun  Jin Yan  Xie Chuanliu
Yangzhou University,Lianyungang Water Resources Planning and Design Institute Ltd.,Management Division of Qinhuai River Hydraulic Engineering of Jiangsu Province,Yangzhou University and Yangzhou University
Key Words:pump system  submersible pump  two-way passage  numerical simulation
Abstract:The submersible axial-flow pump system has been more widely applied in pumping projects. Usually the existing submersible pumps used for bi-directional pumping stations are the reversible pumps, the forward and reverse pumping of which is less efficient. The flow characteristics of a new bi-directional submersible pump system combined with the submersible pumps and two-way passages together were explored. By CFX software the full-flow numerical simulation of the system was made and the system flow field was obtained. Also the system hydraulic performance was predicted. The flow characteristics of suction passage with different measures were analyzed. The velocity distribution uniformity at outlet of suction passage showed the elliptical-type flow guide cone of the passage worked the best to prevent harmful vortex, which guaranteed the flow conditions of pump operation. Using specially designed discharge-chamber with unilateral angle of 18°, the flow separation was effectively inhibited, the hydraulic losses were reduced which ensured the overall efficiency of pump systems at high level. A model test was conducted in the high-precision test-bed of hydraulic machinery. The test results showed that under the pump head of 3.11m, flow rate of 256L/s, the pump system efficiency reached 71.9%, which was above the forward or backward pumping efficiency of reversible pump system by 7 and 13 percentage points, respectively. It was evident that the vertical submerged pump system with two-way passage was suitable for bi-directional pumping station. Experimental results and predicted model performance results were consistent in high efficiency area, and the numerical calculations were well verified.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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