新型脉冲喷吹管的数值模拟研究

顾东瑞; 邓志华

doi:10.13205/j.hjgc.202604021

新型脉冲喷吹管的数值模拟研究

doi: 10.13205/j.hjgc.202604021

顾东瑞,
邓志华^,

西南林业大学生态与环境学院(湿地学院), 昆明 650224

详细信息

作者简介:
顾东瑞(1997—),男,硕士,主要研究方向为大气污染控制。314936701@qq.com

通讯作者:
邓志华(1976—),女,教授,博士生导师,主要研究方向为“三废”治理和碳排放核算与减排路径。dengzhoo@163.com

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出版历程
- 收稿日期: 2025-05-13
- 网络出版日期: 2026-06-06
- 刊出日期: 2026-04-01

Numerical simulation study of a new pulse blowing tube

GU Dongrui,
DENG Zhihua^,

College of Ecology and Environment (Wetland College), Southwest Forestry University, Kunming 650224, China

摘要

摘要: 通过自行设计研究一种新型脉冲清灰喷吹管，结合流体力学知识设计其喷吹管径为40 mm，长度为660 mm，每隔110 mm，在四周开6 mm小孔，用于气流出流，喷出气流直接作用到滤筒内壁，在气流的冲击力和清灰压力下进行清灰工作。实验设计基于CFD模拟仿真，在0.3 MPa脉冲压力下进行研究，对不同时刻纵截面压力云图、同一时刻不同喷吹距离下的横截面压力云图进行监测。在此基础上分别对喷吹管内正对孔、正孔间、侧对孔、侧孔间处的总压力峰值、动压峰值、静压峰值进行监测。结合压力云图分析了整个清灰过程的动静压变化，结果表明：系统在60 ms时达到稳定，大大缩短了清灰时间；新型脉冲喷吹管在正对孔处压力峰值达到最大，侧孔间压力峰值最小，但侧孔间喷吹均匀性明显优于正对孔。
- 脉冲清灰 /
- 新型喷吹管 /
- 数值模拟 /
- 喷吹研究 /
- 均匀性
Abstract: In this paper， a novel pulse cleaning blowpipe was independently designed. Based on fluid mechanics principles， the blowpipe was configured with an inner diameter of 40 mm and a total length of 660 mm. 6 mm diameter orifices were drilled at 110-mm intervals along the circumferential direction of the pipe； these orifices serve as gas outlets， directing the blown gas to act directly on the inner wall of the filter cartridge. The cleaning process was achieved through the combined action of gas flow impact force and cleaning pressure. Experimental design was based on computational fluid dynamics （CFD） simulations， with tests conducted under a pulse pressure of 0.3 MPa. Pressure contour diagrams of cross-sections at different time intervals and those at varying blowing distances at the same time point were monitored. On this basis， the total pressure peaks， dynamic pressure peaks， and static pressure peaks were measured separately at the front orifices， inter-front-orifice regions， side orifices， and inter-side-orifice regions of the blowpipe. Pressure variations of dynamic and static pressures throughout the entire cleaning process were analyzed using the pressure contour diagrams. The results indicate that the system reaches a stable state at 60 ms， significantly shortening the cleaning cycle. It was concluded that the front orifices exhibit the highest pressure peaks， while the inter-side-orifice regions show the lowest pressure peaks. However， the gas blowing uniformity at the inter-side-orifice regions is significantly superior to that at the front orifices.
- pulse cleaning /
- novel blowpipe /
- numerical simulation /
- blowpipe optimization /
- blowing uniformity

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