摘要
根据睢宁县凌城泵站更新改造要求,为检验该泵装置的水力性能,对凌城泵站立式轴流泵装置进行了模型试验研究。在高精度水力机械试验台上对该立式轴流泵装置进行了能量特性、汽蚀特性和飞逸特性的物理模型试验,以获取该泵装置的综合特性。试验结果表明,该立式轴流泵装置水力性能十分优异,在叶片安放角+2°时立式轴流泵装置最高效率达80.2%,此时泵装置的流量为383.29 L/s,扬程为5.303 m。在净扬程为2.80~7.40 m时,该轴流泵的汽蚀性能均可满足实际运行的要求。该泵装置的单位飞逸转速随叶片角度增大而减小,在叶片角度为-4°,最高净扬程为7.40m时,最大飞逸转速为额定转速1.91倍。
According to the requirement of the renovation for Lingcheng Pumping Station in Suining County, the model test of vertical axial- flow pump device of the pump station is carried out to test the hydraulic performance of the pump unit. The physical model test of energy characteristics, cavitation characteristics and runaway of the vertical axial-flow pump device is carried out on a high-precision hydraulic machinery test rig, for the comprehensive characteristics of the pump device. The experimental results show that the axial-flow pump hydraulic device has excellent performance, in the blade angle ＋2 degrees vertical axial pump device highest reaches 80.2%. At this time the flow rate of the pump device is 383.29 L/s, the head is 5.303 m.In the range of 2.80-7.40 m, the cavitation performance of the axial flow pump can meet the requirements of actual operation in a wide range of operating conditions. The unit runaway speed of the pump unit decreases with the increase in the blade angle, when the blade angle is -4 degrees and the maximum net head is 7.40 m, the maximum runaway speed is rated at 1.91 times the rated speed.
作者
孙丹丹
陈世杰
王斌
谢传流
杨帆
SUN Dan-dan1, CHEN Shi-jie2, WANG Bin1 , XIE Chuan-liu2, YANG Fan2(1.Xuzhou Water Conservancy Architectural Design Institute, Xuzhou 221002, Jiangsu Province, China; 2. Yangzhou University, Yangzhou 225127, Jiangsu Province, Chin)
出处
《中国农村水利水电》
北大核心
2018年第2期126-130,共5页
China Rural Water and Hydropower
基金
国家自然科学基金项目(51609210)
江苏省自然科学基金项目(BK20150457)
中国博士后自然科学基金项目(2016M591932)
研究生培养创新工程(XSJCX17_027)
关键词
凌城泵站
立式轴流泵
泵装置
模型试验
Lingcheng pumping station
vertical axial-flow pump
pump unit
model test
