气力输送中输运量和物气比的实验研究  

Experimental study on the conveying capacity and material gas ratio in pneumatic conveying

作　　者：李亮[1,2] 石瑞芳 张斌 LI Liang;SHI Ruifang;ZHANG Bin(Institute of Fluid Engineering,Zhejiang Universty,Hangzhou 310027,China;Guangdong Infore Intelligent Sanitation Technology Co.,Ltd,Foshan 528322,China;Changsha Zoomlion Environmental Bndustry Co.,Ltd,Changsha 410013,China)

机构地区：[1]浙江大学流体工程研究所,浙江杭州310027 [2]广东盈峰智能环卫科技有限公司,广东佛山528322 [3]长沙中联重科环境产业有限公司,湖南长沙410006

出　　处：《中国计量大学学报》2022年第2期159-163,共5页Journal of China University of Metrology

基　　金：湖南省科技创新计划项目(No.2020RC4029)。

摘　　要：目的:研究气力输送能力和输送效率。方法:以煤粉灰为物料进行了输运量和物气比的实验研究。结果:在相同的泵出压力和给气量的情况下,粉煤灰密度较大时的输送能力和输送效率也较高。在不同的泵出压力下,粉煤灰的输运量和灰气比与给气量分别成正比和成反比。结论:给气量过小会使输送能力不足,过大则导致输送效率降低且容易对系统的部件和管道产生冲蚀磨损,在本文的工况下,取压力180 kPa和给气量350 kg/h比较合适。不同的气力输送系统对物料输运量和物气比有不同的要求,压力与给气量之比取0.5可以作为参考。Aims: This paper aims to study the pneumatic conveying capacity and efficiency. Methods: the conveying capacity and material gas ratio of fly ash were experimentally studied. Results: The results showed that, under the same pumping pressure and gas supply, the conveying capacity and efficiency of fly ash were the higher with the higher density. Under the different pumping pressure, the conveying capacity and material gas ratio of fly ash were directly proportional and inversely proportional to the gas supply, respectively. Conclusions: Too small air supply will lead to insufficient conveying capacity;and too large air supply will lead to reduced conveying efficiency and easy erosion and wear of system components and pipelines. Under the working conditions in this paper, it is appropriate to take the pressure of 180 kPa and the air supply of 350 kg/h. Different pneumatic conveying systems have different requirements for material conveying capacity and material gas ratio, and the ratio of pressure to gas supply is 0.5, which can be used as a reference.

关 键 词：气力输送 输运量 物气比 实验 

分 类 号：TH232[机械工程—机械制造及自动化]