REN Ling,YUAN Na,LIN Longyuan

(School of Environment and Resource,Southwest University of Science and Technology,Mianyang 621000,China)

Abstract：Firstly,a schlieren instrument was used to photograph and observe the deflection angle of porous jet under different jet pressure.Then,different jet pressure and jet distance were set to test the peak pressure at 18 measuring points set on the side wall of three filter cartridges on the self-made porous jet experimental platform.Lastly,the influence of jet pressure and jet distance on the deflection of porous jet airflow and cleaning performance of the filter cartridge were investigated by comparative analysis.The experimental results show that:it is found from schlieren image that the deflection angle of the jet airflow decreases along the direction of the jet pipe,and the airflow deflection angle of three holes increases with the increase of jet pressure.With the increase of the jet pressure,the angle of deflection of the jet airflow increases,the difference between the peak pressure of face flow surface and back flow surface increases,and the deflection of air flow acting on the filter cylinder becomes more obvious.The overall dust cleaning uniformity of the filter cylinder decreases and the dust cleaning performance becomes worse.With the increase of jet distance,the peak pressure of each measuring point on the side wall of the three filter cartridges increases at first and then decreases,and the difference of the peak pressure on the side wall of the same filter cartridge decreases firstly and then increases.When the jet distance is 180 mm,the pressure peak difference of the two sides of the filter cartridge is the smallest,and the cleaning performance of the filter cartridge is the best.

Keywords：porous jet; airflow deflection; jet pressure; jet distance; filter cartridge; cleaning performance

中图分类号：X964

文献标志码：A

文章编号：1008-5548(2021)01-0058-07

DOI：10.13732/j.issn.1008-5548.2021.01.007

收稿日期：2020-07-12，修回日期：2020-09-27，在线出版时间：2020-11-02 10:30。

基金项目：四川省教育厅自然科学基金项目,编号:18ZA0498;四川省应用基础研究基金项目,编号:2018JY0438。

第一作者简介：任玲(1996—),女,硕士研究生,研究方向为工业通风除尘。E-mail:1552967123@qq.com。

通信作者简介：林龙沅(1981—),男,博士,副教授,硕士生导师,研究方向为气流粉碎、分级与除尘净化。E-mail:LLy7572@126.com。