摘要
变频变角双调轴流泵可在一定范围内连续变速和调角,合理决策可取得较大的节能效果。针对不同的装置扬程,在每一转速点求装置效率特性曲线的最大极值点获得最优叶片角度;在变速范围内,采用黄金分割缩小搜寻区间寻优法,求得最优的转速。由此确定不同装置扬程下变速、调角运行方案。通过比较不同运行方案的最高装置效率随装置扬程变化曲线,分析了变频变角双调轴流泵运行节能效果。
Variable frequency and angle double-adjustable axial flow pump can be in a certain range of continuous speed and angle adjust- ment, reasonable decision-making can achieve greater energy saving effect. The optimal blade angle is obtained at the maximum value of the device speed efficiency curve of each according to the different device head. In the range of speed change, the optimum speed is obtained by using the golden-section search method. Thus determine under the different devices head the speed, angle adjustment of the program. By comparing the maximum device efficiency of different operation schemes with the device head change curve, the energy saving effect of varia- ble frequency variable angle double-adjustable axial-flow pumps was analyzed.
作者
李娜
周龙才
侯国鑫
LI Na ZHOU Long-cai Hou Guo-xin(China Irrigation and Drainage Development Center, Beijing 100054, China School of Water Resources and Hydropower, Wuhan University, Wuhan 430072, China Dongting Lake Water Resources Administration Bureau of Hunan Province, Changsha 410007, China)
出处
《中国农村水利水电》
北大核心
2016年第11期185-188,共4页
China Rural Water and Hydropower
基金
"十二五"国家科技支撑计划项目(2012BAD08B03)
关键词
泵站
变频调速
变角调节
节能分析
pumping station
variable frequency speed regulation
variable angle adjustment
energy saving analysis
