摘要
针对涡流控尘装置径轴向风量分配问题,提出通过监控风机频率来调控径轴向风量的思路。实验室搭建了由压入式风机、涡流控尘装置和试验管道组成的试验系统,在压入风机40、45、50 Hz频率下,以及在涡流风机30、35、40、45、50 Hz频率下,采用截面动压法测试得到径轴向风量分配规律:压入风量Q压和轴向风量Q轴与压入风机频率f_(1)呈单调增的关系,与涡流风机频率f_(2)呈单调减的关系。基于径轴向风量分配规律,建立了关于5f_(1)-f_(2)的一次函数和关于f_(1)/f_(2)的二次函数风量调控模型。最后通过试验实测验证,模型计算值与实测值基本一致,最大绝对误差为7.2 m^(3)/min,调控模型的准确性较好。
Regarding the distribution of radial and axial airflow in vortex dust control device,a method of regulating radial and axial air flow by monitoring fan frequency was proposed.A testing system consisting of a compressed fan,vortex dust control device,and testing pipelines was established in the laboratory.At the frequencies of 40 Hz,45 Hz,50 Hz for the compressed air fan and 30 Hz,35 Hz,40 Hz,45 Hz,50 Hz for the vortex fan,the radial and axial airflow distribution law was obtained through the cross-sectional dynamic pressure testing.The compressed air volume Q compressed and axial air volume Q axial showed a monotonic increase with the frequency f_(1) of the compressed air fan,and a monotonic decrease with the frequency f_(2) of the vortex fan.Based on the distribution law of radial and axial air flow,a first-order function and a second-order function air flow control model for 5f_(1)-f_(2) and f_(1)/f_(2) were established.Finally,according to the experimental verification,the calculated values of the model are basically consistent with the measured values,with a maximum absolute error of 7.2 m^(3)/min.The accuracy of the control model is favorable.
作者
许圣东
郑磊
丁志权
XU Shengdong;ZHENG Lei;DING Zhiquan(CCTEG Chongqing Research Institute,Chongqing 400037,China)
出处
《煤炭工程》
北大核心
2024年第9期159-164,共6页
Coal Engineering
基金
中国煤炭科工集团有限公司科技创新创业资金专项重点项目(2022-2-TD-ZD011)
重庆市自然科学基金博士“直通车”项目(CSTB2023NSCQ-BSX0013)。
关键词
涡流控尘
径轴向风量
风机频率
风量分配
调控模型
vortex dust control
radial and axis air volume
fan frequency
air distribution
regulating model
