许振良,蔡荣宦,武日权,王铁力
XU Zhenliang,CAI Ronghuan,WU Riquan,WANG Tieli

• 1:辽宁工程技术大学矿业学院
• 2:中煤科工集团武汉设计研究院有限公司管道输煤所

摘要(Abstract)：

为了精确计算矿浆管道输送的临界流速,根据前人试验数据,分析了浆体浓度、管道直径、浆体粒径组成及浆体密度等对临界流速的影响,并进行机理分析。在研究前人计算临界流速公式的基础上,提出计算临界流速公式新模型及临界流速的新定义,通过量纲分析拟合出临界流速计算新公式,并对新公式进行验证。结果表明,临界流速随着浆体浓度和管径的增加而增大,随颗粒粒径和管径比值的增大而减小。本文的试验临界流速实测值与计算值最大误差为2.69%,平均误差为1.29%;文献中试验的临界流速实测值与计算值平均误差分别为4.18%、10.25%、11.45%;临界流速计算新公式平均误差均在12%以内,满足稀悬液浆体管道输送临界流速的预测要求。
In order to accurately calculate the critical velocity of slurry pipeline transportation,the influence of slurry concentration,pipeline diameter,slurry size distribution and slurry density on the critical flow velocity was analyzed according to previous experimental data,and the mechanism was elucidated.The results show that with the increase of slurry concentration and pipeline diameter,the critical velocity increases,while the critical velocity decreases gradually with the increasing of particle size and diameter ratio.On the basis of previous studies,a new model for calculating critical velocity and a new definition on critical velocity are proposed. It is fitted by dimensional analysis and verified by experiment.The maximum error between calculated value and measured value is 2. 69%,and the average error is 1. 29%.The average error of measured critical velocity and tested value from three famous scholars are 4. 18%,10. 25%,11. 45%,respectively.The average error of the new formula to verify the calculation of critical velocity is less than 12%,which meets the prediction of critical velocity.

关键词(KeyWords)： 矿浆管道;水力输送;临界流速;量纲分析
slurry pipeline;hydraulic transportation;critical velocity;dimensional analysis

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(50874059);; 中国煤炭科工集团科技创新基金资助项目(2014QN040)

作者(Author): 许振良,蔡荣宦,武日权,王铁力
XU Zhenliang,CAI Ronghuan,WU Riquan,WANG Tieli

DOI: 10.13226/j.issn.1006-6772.2018.03.026

参考文献(References)：

• [1]陈光国,夏建新.我国矿浆管道输送技术水平与挑战[J].矿冶工程,2015,35(2):29-32.CHEN Guangguo,XIA Jianxin.Existing technology and technical challenges in slurry pipeline transportation development in China[J].Mining and Metallurgical Engineering,2015,35(2):29-32.
• [2]DURAND R.The hydraulic transportation of coal and other materials in pipes[D].London:College National Board,1952.
• [3]瓦斯普.固体物料的浆体管道输送[M].北京:中国水利水电出版社,1980.
• [4]SHOOK C A.Pipelining solids:The design of short-distance pipelines[M].Toronto:Chemical Engineering,1969.
• [5]赵利安.大颗粒浆体管内流动规律研究[D].阜新:辽宁工程技术大学,2011.
• [6]THOMAS D G.Transport characteristics of suspensions:Part VI.minimum transport velocity for large particle size suspensiongs in round horizontal pipes[J].AICHE Journal,1962,8(3):373-378.
• [7]GRAF W H,ROBINSON M P,YUCEL O.Critical velocity for solid-liquid mixtures[C]//Transport of solids in conduits Part 1.Bethlehem:Lehigh University,1970.
• [8]费祥俊.浆体与粒状物料输送水力学[M].北京:清华大学出版社,1994.
• [9]王绍周.粒状物料的浆体管道输送[M].北京:海洋出版社,1998.
• [10]刘晓东.水力输砂试验研究[J].水力采煤与管道运输,2004(1):3-7.
• [11]卢勇.管道固-液两相浆体输送理论研究[D].长沙:湖南大学,2015.
• [12]邱灏,曹斌,夏建新.粗颗粒物料管道水力输送不淤临界流速计算[J].水利水运工程学报,2016(6):103-108.QIU Hao,CAO Bin,XIA Jianxin.Non-silting critical velocity calculation of coarse-grained materials in hydraulic pipeline[J].Hydro-Science and Engineering,2016(6):103-108.
• [13]汪东,许振良,孟庆华.浆体管道输送临界流速的影响因素及计算分析[J].管道技术与设备,2004(6):1-2.WANG Dong,XU Zhenliang,MENG Qinghua.Effect factors and calculating analysis of critical flow velocity in slurry pipeline transportation[J].Pipeline Technique and Equipment,2004(6):1-2.
• [14]丁宏达.物料粒径对浆体管道输送临界流速的影响[J].水力采煤与管道运输,2011(4):1-6.
• [15]秦德庆,曹斌,夏建新,等.不同颗粒物料管道水力输送不淤临界流速的确定[J].矿冶工程,2014,34(1):9-11.QIN Deqing,CAO Bin,XIA Jianxin,et al.Study on non-depositing velocity of different particle materials in pipeline by hydraulic transportation[J].Mining and Metallurgical Engineering,2014,34(1):9-11.
• [16]赵利安,许振良,王铁力.水沙非均质流水平管道流动临界速度研究[J].水利水运工程学报,2016(4):63-69.ZHAO Li'an,XU Zhenliang,WANG Tieli.Experimental studies on critical velocities of sand-water heterogeneous flow in horizontal pipelines[J].Hydro-Science and Engineering,2016(4):63-69.
• [17]曹斌,李婧贤,徐心一,等.粗颗粒管道水力输送试验研究[J].泥沙研究,2016(3):61-66.CAO Bin,LI Jingxian,XU Xinyi,et al.Experimental study on pipeline hydraulic transport of coarse particles[J].Journal of Sediment Research,2016(3):61-66.
• [18]YOTSUKURA N.Some effects of bentonite suspensions on sand transport in a smooth 4-inch pipe[D].Fort Collins:Colorado State University,1961.
• [19]MEHMET A K,MUSTAFA G.Critical flow velocity in slurry transporting horizontal pipelines[J].Canadian Metallurgical Quarterly,2001,127(9):763-771.