摘要
为提高管道水力输送安全性,设计导叶进口安放角和叶片数不同的模型泵,建立管道输送试验系统,采用粒径为3mm的石英砂在输送颗粒体积分数为5%的条件下通过不同模型泵,分析导叶设计参数对颗粒过泵的影响。研究结果表明:导叶进口安放角为25°、叶片数为5的模型泵最优;颗粒在该模型泵中运动,在导叶进口区域,颗粒主要从导叶背面进入,而且颗粒冲击导叶背面的现象不明显;在出口部位,颗粒主要靠近流道中部流出导叶,这样减少了对导叶出口叶片的碰撞;颗粒在此泵中运动的时间较少,不集中在泵中1个部位发生碰撞,对泵的磨损较轻。
In order to improve the safety of pipeline transportation,model pumps with different inlet angles and blade quantities were designed and the pipeline transportation system was built.The particles with volume fraction of5%and diameter of3mm were transported to different model pumps.Based on the results,the influence of the design parameters of the guide blade on the particle passing the pump was analyzed.The results show that the pump is better when the inlet angle is25°and when there are5blades.In this model pump,the particles enter the passageway from the back of the guide leaf,and it is not obvious that the particle impacts the back of guide vane.Particles flow out of the guide vane from the center of the passageway,potentially reducing the impact.The particles have less time to pass through this pump than other pumps,and particles do not all collide in one single place,which leads to less wear for the guide vane.
作者
罗荣昌
余淑琦
符瑜
姚妮均
夏建新
LUO Rongchang;YU Shuqi;FU Yu;YAO Nijun;XIA Jianxin(College of Life and Environment Science, Minzu University of China, Beijing 100081, China)
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2018年第12期2963-2971,共9页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(51339008
51209238
51434002)
一流大学与一流学科建设过渡性经费专项资金资助项目(2017)~~
关键词
进口安放角
叶片数
运动轨迹
碰撞
过导叶时间
inlet angle
blade quantity
particles trajectory
collision
passing time
作者简介
通信作者:夏建新,博士,教授,从事深海资源开发研究;E-mail: jxxia@vip.sina.com
