摘要
为解决煤炭颗粒长距离气力输送存在的煤炭破碎、管路磨损等问题,设计煤炭颗粒旋流气力输送系统。该系统在入料初期、煤炭颗粒输送过程中以及弯管前端都设置有自主研发的侧向补气导流叶片式起旋器。起旋器包含主进气口和侧向进气口,兼具源头起旋和输送过程继旋功能,可以调节切向和轴向气流的比例以及切向和轴向气流的汇合位置。旋流气力输送系统试验结果表明,当切向流量比为0.2且输送气流速度低于40 m/s时,旋流场内所储备的能量高于相同工况的轴流场,系统具有较高的输送能效。
In order to solve the problems of coal breakage and pipeline wear during long distance pneumatic conveying of coal particles, a swirling flow pneumatic conveying system of coal particle was proposed. Self-developed blade swirlers with lateral air supply and diversion functions were put in the conveying initial stage, conveying process and front of elbow. The swirler contains a primary air inlet and a lateral air inlet, so it can generate swirl either in the source or in the middle process. The percent and confluence position of tangential and axial flow can both be adjusted. The results of swirling flow pneumatic conveying system experiments show that the storing energy of swirling flow field is higher than that of axial flow field, when the tangential flow ratio is 0.2 and the air flow velocity is lower than 40 m/s. The system had higher conveying efficiency.
作者
周甲伟
荆双喜
刘瑜
Zhou Jiawei;Jing Shuangxi;Liu Yu(School of Mechanical and Power Engineering,Henan Polytechnic University,Jiaozuo 454000,China;School of Mechanical Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450045,China)
出处
《煤矿机械》
2021年第11期1-4,共4页
Coal Mine Machinery
基金
国家自然科学基金(51805166
51404096)
中国博士后科学基金(2019TQ0084
2020M672223)
河南省高等学校重点科研项目计划(21B440001)
河南省高校基本科研业务费专项资金(NSFRF210459)。
关键词
旋流气力输送
煤炭颗粒
起旋器
侧向补气导流
输送能效
swirling flow pneumatic conveying
coal particle
swirler
lateral air supply and diversion
conveying efficiency
作者简介
周甲伟(1984-),河南原阳人,副教授,博士,现主要从事煤炭气力输送方面的研究工作,电子信箱:zhoujw@hpu.edu.cn.
