摘要
在水平渐缩管内浓相气力输送试验台上,以压缩空气作为输送动力,脱硫石膏粉体为输送物料进行了气固两相输送试验,在试验的基础上得出了不同输送条件下气固两相通过水平渐缩管时压力降的变化规律及影响因素。研究表明,管径比、固气质量比和扩散角度对管道压力降影响显著。同时,利用相似第二定律和量纲分析法建立了水平渐缩管的阻力特性关联式。通过将压力降试验值与计算值进行对比,发现该阻力特性关联式具有较好的精确度。
In the lab tables of horizontal shrinking pipeline in phase pneumatic conveying, the gas-solid conveying experiments are carried on with using compressed air as conveying power and gypsum powder as transported materials, and then bases on the experiments , results show change law and influence factors of pressure drop in horizontal shrinking pipeline under different trans- portation conditions. In this study, it is found that the diameter ratio, mass ratio of solid and gas and diffusion angle are effect on the pipeline pressure drop significant. Meanwhile, use the second similar law and dimensional analysis method to set up the re- sistance characteristics relational of horizontal shrinking pipeline. By analysis the experimental data of the pressure drop with the calculated data, find that the resistance characteristic relational has good accuracy.
出处
《流体机械》
CSCD
北大核心
2013年第1期6-9,共4页
Fluid Machinery
基金
山东省自然科学基金(ZR2011EL040)
山东省大型科学仪器设备升级改造技术研究项目(2011SJGZ20)
济南青年科技明星计划(20120121)
济南市科技发展计划(201202071)
关键词
气力输送
水平渐缩管
阻力特性
物理数学模型
pneumatic conveying
horizontal shrinking pipeline
resistance characteristics
physical-mathematical model
