谢智宇¹ ，林 涛¹ ，杨光辉¹ ，王云端¹ ，林小嘉² ，陈海焱¹ ，林龙沅¹

1.西南科技大学 环境与资源学院，四川 绵阳 621000；2.广元中核职业技术学院，四川 广元 628003

引用格式：

谢智宇，林涛，杨光辉，等. 卧式三角型滤筒的脉冲喷吹清灰性能［J］.中国粉体技术，2024，30（5）：146-157.

XIE Zhiyu， LIN Tao， YANG Guanghui， et al. Dust removal performance of horizontal triangular filter cartridge by pulse jet［J］.China Powder Science and Technology，2024，30（5）：146−157.

DOI：10.13732/j.issn.1008-5548.2024.05.014

收稿日期：2024-01-24，修回日期：2024-04-28，上线日期：2024-08-29。

基金项目：国家自然科学基金项目，编号：52204286；四川省科技计划资助项目，编号：2023YFS0362。

第一作者简介：谢智宇（1998—），男，硕士生，研究方向为工业通风除尘。E-mail：1471329372@qq.com。

通信作者简介：林龙沅（1981—），男，教授，博士，硕士生导师，科技部国家科技专家库入库专家，研究方向为气流粉碎、分级与除尘净化。E-mail：lly7572@126.com。

摘要：【目的】 为优化卧式三角型滤筒除尘器的清灰性能，探究不同喷吹气流对滤筒内部压力分布的影响，获得不同喷吹孔型式对三角型滤筒的清灰性能的影响规律。【方法】 分别采用直管喷吹孔、文氏里管、散射喷嘴、新型曲面诱导引射器共 4种喷吹孔型式的诱导引流装置对卧式三角型滤筒开展冷态脉冲实验，以侧壁压强峰值和相对标准偏差作为评价清灰性能的技术指标，分别探讨不同条件下的喷吹射流对滤筒内壁压力分布的影响。【结果】 在喷吹压强分别设为0.3、0.4、0.5 MPa 的条件下，采用直管、文丘里管、新型曲面诱导引射器时喷吹距离分别设为 150、200、250、300、350、400 mm，采用散射喷嘴时喷吹距离分别设为 25、50、75、100、125、150、175 mm，则采用直管、文丘里管、散射喷嘴、新型曲面诱导引射器时的平均侧壁压强峰值分别为 1 037、1 758、952、1 533 Pa，相对标准偏差分别为 0.76、0.58、0.09、0.16；采用新型曲面诱导引射器喷吹孔时，比采用散射喷嘴时的清灰强度高61%，比采用文丘里管时的相对标准偏差小0. 47。【结论】 新型曲面诱导引射器同时兼顾了对侧壁压强峰值和相对标准偏差的要求，在4种喷吹孔型式中清灰性能最佳。

关键词：卧式三角型滤筒；脉冲喷吹；清灰性能；喷吹孔

Abstract：

Objective In order to enhance the dust removal performance of the horizontal triangular filter cartridge dust collector， this study investigates the influence of pulse jet blowing generated by various nozzle configurations within the induction drafting apparatus on the pressure distribution across the interior surface of the horizontal triangular filter cartridge. This approach facilitates the identification of the key rules governing the effectiveness of different nozzle designs in dust removal.

Methods Different induction draft devices equipped with four types of nozzles—straight pipe nozzle， Venturi tube nozzle， scattering nozzle， and a new curved surface induction ejector—were employed to conduct cold-state pulse jet tests on horizontal triangular filter cartridge. During these tests， peak sidewall pressures at various measurement points were recorded. The relative standard deviation of these pressures was then calculated and analyzed. The two parameters were used to characterize the intensity and uniformity of the cleaning pressure， serving as technical indicators of cleaning performance. The effects of different experimental parameters on the pressure distribution on the inner walls of the filter cartridges induced by the pulse jet streams，were also investigated.

Results and Discussion With the straight pipe nozzle， when the spray pressure was 0.3，0.4， or 0.5 MPa and the spraying distance ranged from 150 to 400 mm， the average sidewall pressure peaks at measuring points P₁ and P₂ on the left side of the filter cylinder were all below the effective cleaning pressure threshold. The average relative standard deviation of 0. 76 indicated poor performance in both cleaning strength and uniformity. When Venturi tube nozzle was used at spray pressures of 0.3，0.4 or 0.5 MPa while the spraying distance was ≥300 mm， the average sidewall pressure peaks at all measuring points met the effective cleaning pressure threshold， with an average relative standard deviation of 0. 58， indicating poorer cleaning uniformity. This configuration is suitable for applications where high cleaning strength is prioritized over uniformity. Using scattering nozzles at the same spray pressures while a spraying distance ranged from 25 to 175 mm， the average sidewall pressure peaks at all measuring points exceeded slightly the effective cleaning pressure threshold， with an average relative standard deviation of 0. 09， indicating superior cleaning uniformity among all the configurations. It is suitable for applications requiring both high cleaning strength and uniformity. Finally， with the new curved surface nozzle at spray pressures of 0.3，0.4，or 0.5 MPa and spraying distances ranging from 150 to 400 mm， all measuring points showed average sidewall pressure peaks above the effective cleaning pressure threshold. The front and middle sections of the filter cylinder achieved an average sidewall pressure peak of 1 533 Pa，which was 61% higher than that of the angled spray nozzles. The average relative standard deviation of 0. 16 was lower compared to the parabolic nozzle， thus striking a balance between cleaning strength and uniformity， making itsuitable for diverse industrial applications.

Conclusion The experimental results suggest that， excluding the straight pipe nozzle， the other three types of nozzles are suited for specific industrial production settings. Upon evaluating all nozzle configurations for their induction drafting capabilities， it is observed that the horizontal triangular filter cartridge， when paired with a new curved surface induction injector， markedly elevates the pressure intensity and uniformity of the clearance operation. This configuration adeptly addresses the dual requirements for robust pressure strength and uniform clearance effectiveness， emerging as the most exceptional among the four tested nozzle types in induction drafting systems.

Keywords：horizontal triangular filter cartridge； pulse injection； dust cleaning performance； spray hole

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