煤泥输送管道压力分布  

Pressure distribution of the coal slurry in the pipeline transportation

作　　者：吴淼[1] 潘越[1,2] 赵国瑞[1] 胡伟伟[1] 杨阳[1] 

机构地区：[1]中国矿业大学(北京)机电与信息工程学院,北京100083 [2]河北工程大学机电工程学院,河北邯郸056038

出　　处：《煤炭学报》2009年第2期267-270,共4页Journal of China Coal Society

基　　金：高等学校博士学科点专项科研基金资助项目(20020290011);科技部科技型企业基金资助项目(02C26211100499)

摘　　要：洗煤泥等高浓度黏稠物料在管道输送中的阻力损失呈非线性,考虑泵送阻力损失是剪切应力和摩擦阻力共同作用的结果,建立了沿管线压力分布的数学模型,得到管线内压力变化服从一复杂的指数关系,并提出一种通过测量同一管路不同管段的压差来计算高浓度黏稠物料在管道中的摩擦因数的方法以及消除摩擦阻力损失对煤泥的流变模型进行修正的方法.以固体质量浓度为75%煤泥为例,经过管道输送实验测得摩擦阻力系数和流变方程,并建立了煤泥输送管道压力分布计算公式.High viscous materials like coal slurry＇ s resistance characteristics are nonlinear in pipeline transportation. Considering it is influenced by shearing stress and frictional resistance, built up a mathematic model to describe how the pressure distributes along the pipeline, and educed a complex exponential relationship. Put forward a method to calculate friction coefficient of high viscous materials in pipeline transportation through comparing the pressure at the different point on the same pipeline. Put forward a way to amend the rheological model. Based on the 75% coal slurry pipeline transportation experiment, educed the friction coefficient and rheological equation, and established the pressure distribution formula along the pipeline.

关 键 词：煤泥 管道输送 阻力特性 

分 类 号：TH238[机械工程—机械制造及自动化]