Design of a double-blade swirl wet dust collector for comprehensive mining faces
龚晓燕贺子纶陈龙王海军付浩然裴晓泽孙海鑫张红兵杨富强
GONG Xiaoyan;HE Zilun;CHEN Long;WANG Haijun;FU Haoran;PEI Xiaoze;SUN Haixin;ZHANG Hongbing;YANG Fuqiang
西安科技大学机械工程学院理学院
针对目前用于煤矿综掘工作面环境的除尘器除尘效率低的问题,设计了一种双叶旋流湿式除尘器。根据功能树法确定了该除尘器主要由环状喷雾装置、双旋流叶片、折流除雾板等组成,设计了双旋流叶片以提供更大的离心力,从而提高除尘效率。采用数值模拟方法分析了喷嘴口径、喷雾压力、叶片安装角、叶片转速对除尘器除尘效率的影响规律,基于响应曲面法建立了除尘效率与4种影响因素之间的多元回归方程,得出了令除尘器除尘效率最高的最佳参数:叶片安装角37°,转速1 550 r/min,喷雾压力1.9 MPa,喷雾口径2 mm。基于该参数建立了双叶旋流湿式除尘器虚拟样机,通过仿真得出除尘器的除尘效率为97.21%,安装除尘器后巷道回风侧行人呼吸带粉尘浓度大幅降低。在除尘实验平台及模拟巷道对除尘器模拟机进行测试,结果表明:除尘器的除尘效率平均值为94.80%;应用除尘器后,巷道回风侧行人呼吸带高度平均粉尘浓度由应用前的441.29 mg/m3降低至为269.14 mg/m3,降幅达39.0%。
To address the issue of low dust collection efficiency of dust collectors currently used in the environment of coal mine comprehensive mining faces, a double-blade swirl wet dust collector was designed. The dust collector was mainly composed of an annular spray device, double swirl blades, and baffle mist eliminators, with the double swirl blades designed to provide greater centrifugal force and thus improve dust collection efficiency. A numerical simulation method was used to analyze the effects of nozzle diameter, spray pressure, blade installation angle, and blade rotational speed on dust collection efficiency. Based on the response surface methodology, a multivariable regression equation was established between dust collection efficiency and the four influencing factors. The optimal parameters for maximum dust collection efficiency were determined as follows: blade installation angle of 37°, rotational speed of
综掘工作面喷雾除尘湿式除尘器双旋流叶片结构参数优化响应曲面法
comprehensive mining face;spray dust collection;wet dust collector;double swirl blades;structural parameter optimization;response surface methodology
主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会