ISSN 1008-5548

CN 37-1316/TU

2021年27卷  第5期
<返回第5期

重型车空气滤清器脉冲清灰数值模拟分析

Numerical simulation of pulse dust cleaning for heavy duty vehicle air filter

龚 呈1a, 钱付平1b, 徐志成2, 陈路敏1b, 刘 哲1a, 付跃虎1a

(1. 安徽工业大学 a. 建筑工程学院; b. 能源与环境学院, 安徽马鞍山243002;2. 上海邗越智能科技有限公司, 上海201400)


DOI:10.13732/j.issn.1008-5548.2021.05.006

收稿日期: 2021-03-13,修回日期:2021-04-08,在线出版时间:2021-08-17 15:13。

基金项目:安徽省科技攻关项目,编号:1301042113。

第一作者简介:龚呈(1996—),男,硕士研究生,研究方向为工业通风与空气净化。E-mail:1317134745@qq.com。

通信作者简介:钱付平(1974—),男,教授,博士生导师,研究方向为工业通风与空气净化。E-mail:fpingqian@ahut.edu.cn。


摘要:针对重型车自洁式空气滤清器的脉冲清灰装置,利用数值模拟方法,采用壁面峰值压力和速度的相对标准偏差作为评价指标,研究空气滤清器的喷吹管长度、喷嘴直径和脉冲清灰压力等对清灰性能的影响。结果表明:在245、265、285、305、325、345 mm 6种喷吹管长度中,较长的喷吹管能有效提高滤芯内表面峰值压力,当喷吹管长度为345 mm时,滤芯内表面的壁面峰值压力最大且流场均匀性最佳;脉冲清灰喷嘴直径对清灰的影响主要表现在脉冲清灰的喷射气流量上,喷嘴直径越大,壁面峰值压力越大,流场均匀性越好,当喷嘴直径为22 mm时,峰值压力最高且流场均匀性最佳;在0.5、0.6、0.7、0.8 MPa这4种压力工况条件下,当脉冲清灰压力为0.8 MPa时,壁面峰值压力最大且流场均匀性最佳,此时滤清器的清灰性能最佳。

关键词:重型车;空气滤清器;脉冲清灰;数值模拟

Abstract:Based on the pulse dust cleaning device of self-cleaning air filter for heavy duty vehicles,the effects of the injection pipe length,the nozzle diameter and the pulse dust cleaning pressure of the air filter on the dust cleaning performance were studied by the numerical simulation method and the peak wall pressure and the relative standard deviations of velocity were used as evaluation indexes. The results show that in the 6 kinds of the injection pipe length,such as 245,265,285,305,325 and 345 mm,the longer injection pipe can effectively improve the peak pressure on the inner surface of the filter element. When the length is 345 mm,the peak pressure on the inner surface is the largest and the flow uniformity is the best. The influence of the nozzle diameter on the pulse dust cleaning is mainly that the nozzle diameter will affect the gas flow of the pulse dust cleaning.The nozzle diameter is larger,the peak wall pressure is larger and the flow uniformity is better. When the nozzle diameter is 22 mm,the peak wall pressure is the largest and the flow uniformity is the best. Under the 4 pressure conditions,such as 0. 5,0. 6,0. 7 and 0. 8 MPa,when the pulse dust cleaning pressure is 0. 8 MPa,the peak wall pressure is the largest and the flow uniformity is the best,so the dust cleaning performance is the best at this pressure.

Keywords:heavy duty vehicle; air filter; pulse dust cleaning; numerical simulation


参考文献(References):

[1]孙阳, 王建东, 卢进军, 等. 一种空气滤清器仿真分析方法研究[J]. 车辆与动力技术, 2014(3): 32-49.

[2]杜丹丰, 马岩. 发动机空气滤清器的应用现状及过滤效果分析[J]. 交通标准化, 2010(9): 221-224.

[3]孟淼, 叶福民, 周鑫. 汽车空气滤清器的结构分析及优化[J]. 江苏科技大学学报, 2016, 30(4): 344-348.

[4]MADDINENI A K, DAS D, DAMODARAN R M. Numerical investigation of pressure and flow characteristics of pleated air filter system for automotive engine intake application[J]. Separation and Purification Technology, 2019, 212: 126-134.

[5]袁志群, 黄飞健, 刘金武, 等. 汽车空气滤清器进气阻力分析[J]. 华侨大学学报(自然科学版), 2016, 37(3): 268-272.

[6]HE Z X, JIANG Z, WANG S, et al. Aero dynamic simulation and structural optimization of air filter[J]. Journal of Central South University, 2012, 43(3): 1179-1184.

[7]黎长青, 姚晓舸, 汪胜华, 等. 空气滤清器自洁系统的研究[J]. 设计与研究, 2019(5): 77-79.

[8]刘淑艳, 徐永强. 旋转自洁式空气滤清器结构选择的试验研究[J]. 车辆与动力技术, 2001, 84(4): 7-11.

[9]李宇, 闫为革, 李世栋. 新型脉冲喷射空气滤清器的试验研究[J]. 大众科技, 2005, 84(10): 179-180.

[10]赵金国, 韩然, 阎治安. 一种矿用车辆自洁式空气滤清器的设计研究[J]. 微特电机, 2018, 46(11): 55-57.

[11]李建, 李建伟. 滤筒除尘器脉冲清灰参数优化设计[J]. 设计与计算, 2019, 187(1): 55-58.

[12]LI J L, WANG P, WU D S, et al. Numerical study of opposing pulsed-jet cleaning for pleated filter cartridges[J]. Separation and Purification Technology, 2020, 234: 116086.

[13]赵新春, 邢连在, 卜恩涛. 矿用汽车空气滤清器的性能要求与维修保养[J]. 装备维修技术, 2019(4): 93-95.

[14]谭永南. 空气滤清器的仿真分析与试验研究[D]. 杭州: 浙江大学, 2010.

[15]张亚蕊, 韩云龙, 钱付平, 等. 新型滤筒除尘器性能的数值模拟[J]. 过程工程学报, 2016, 16(1): 48-54.

[16]巨敏, 张明星, 陈俊东, 等. 滤筒除尘器脉冲清灰动态分析[J]. 环境工程学报, 2013, 7(3): 1091-1094.

[17]LO L M, CHEN D R. Experimental study of pleated fabric cartridges in a pulse-jet cleaned dust collector[J]. Powder Technology, 2010, 197(3): 141-149.

[18]李坦, 靳世平, 黄素逸, 等. 流场速度分布均匀性评价指标比较与应用研究[J]. 热力发电, 2013, 42(11): 60-63.

[19]颜翠平. 脉冲喷吹褶皱式滤筒的清灰效果及机理研究[D]. 合肥: 中国科学技术大学, 2014.