摘要
筒装料管道水力输送是一种新兴的管道水力输送技术,管道车又是筒装料管道水力输送的主要部件之一,为优化其结构,降低能耗,针对不同体表比的管道车在管道内运移时的水力特性进行了试验研究。结果表明:管道车平均速度随体表比的增大而增大,几乎呈正比的线性关系;不同体表比的管道车在运移过程中同一测点压强随时间的变化规律基本相似,但压强开始下降的时间点与不同体表比有紧密的关系,体表比越大,压强下降的时间点越早;体表比的不同不会改变沿程水流压强的整体下降趋势,体表比为14.2的管道车单位长度能耗最小。
Hydraulic transportation by tube feeding pipe is a new kind of pipeline hydraulic transportation technology, and the piped carriage is one of the main form of the tube feeding pipe hydraulic transportation. In order to optimize its structure and reduce energy consumption,the hydraulic characteristics of piped carriage with different body - surface ratio are studied in this paper by physical model. The test results show that the average velocity of piped carriage increases with the ascending of the body - surface ratio,almost in a proportional linear relationship. At the same time,it is found that when the piped carriage moves in the pipeline of different body - surface ratios,the change of the pressure at the same measuring point is similar, but the time of pressure starting to descend is closely related to the body - surface ratio, namely the larger the body surface ratio is, the earlier the pressure drops. The difference of the body - surface ratio does not affect the overall downward trend of the flow pressure. The piped carriage of body - surface ratio 14.2 has the minimal per length energy consumption.
作者
黄莹彬
李永业
孙西欢
贾晓萌
胡志毅
HUANG Yingbin;LI Yongye;SUN Xihuan;JIA Xiaomeng;HU Zhiyi(College of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;Shanxi conservancy technical college, Yuncheng 044004, China)
出处
《人民长江》
北大核心
2018年第2期104-108,共5页
Yangtze River
基金
国家自然科学基金项目(51109155
51179116)
山西省自然科学基金项目(2015011067)
太原理工大学校基金项目(2015QN032)
关键词
体表比
管道车
速度
压强
能耗
body - surface ratio
piped carriage
velocity
pressure
energy consumption
