摘要
为检验通吕运河水利枢纽工程贯流泵机组泵装置的水力特性,对竖井贯流泵装置开展了能量特性试验、空化特性试验、飞逸特性试验,获得了叶片安放角0°、±2°和±4°下的试验结果。结果表明:各叶片角度下,在正常运行扬程范围内竖井贯流泵装置模型运行平稳,无明显不良噪音和振动;在叶片角度0°下,设计扬程1.98 m时,临界空化余量约为4.05 m;最大扬程3.70 m时,临界空化余量约为6.29 m;在扬程1.98~3.70 m内,临界空化余量均满足运行要求;叶片安放角度为-4°,扬程为3.30 m时,泵装置的最高效率达到79.03%;竖井贯流泵装置单位飞逸转速随叶片角度减小而增大;在叶片角度0°,最大扬程3.70 m时,最大飞逸转速为水泵机组额定转速的2.13倍。
In order to test the hydraulic characteristics of the pump unit of the Tonglv Canal Water Conservancy Project,the energy characteristics test,cavitation characteristic test,flight characteristics test and test of the shaft tubular pump device are carried out.The results show that:at various blade angles,the model of the shaft cross-flow pump device runs smoothly within the normal operating head range,without obvious bad noise and vibration;at a blade angle of 0°,the critical head cavitation margin is about 1.98 m.At a maximum head of 3.70 m,the critical cavitation margin is approximately 6.29 m;within a head of 1.98 m to 3.70 m,the critical cavitation margin meets the operating requirements;the blade placement angle is-4°and the head is 3.30 m;At the time,the maximum efficiency of the pump device reached 79.03%;the unit flying speed of the shaft cross-flow pump device increases as the blade angle decreases;when the blade angle is 0°and the maximum head is 3.70 m,the maximum flying speed is the rated speed of the pump unit 2.13 times.
作者
杨建峰
王铁力
张一祁
周亚军
杨帆
YANG Jian-feng;WANG Tie-li;ZHANG Yi-qi;ZHOU Ya-jun;YANG Fan(Nantong City Construction Group Co,Ltd,Nantong 226000,Jiangsu Province,China;Jiangsu Surveying and Design Institute of Water Resources Co,Ltd,Yangzhou 225127,Jiangsu Province,China;College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou 225127,Jiangsu Province,China)
出处
《中国农村水利水电》
北大核心
2020年第12期167-171,共5页
China Rural Water and Hydropower
基金
国家自然科学基金项目(51609210)
江苏省科协青年科技人才托举工程项目
扬州市“绿扬金凤计划”资助项目(LVJFLJ-2019082)
关键词
通吕河泵站
竖井贯流泵
泵装置
模型试验
Tonglv River Pumping Station
shaft-tubular pump
pump device
model test
