主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2022, Vol. 41 ›› Issue (11): 1497-1502.

• • 上一篇    下一篇

锂电池粉尘惰化装置微量连续送粉优化研究

楚世赟1,2，谢小鹏1,2，卢小辉1   

  1. （1.华南理工大学 机械与汽车工程学院，广东 广州 510640； 2.东莞汇乐技术股份有限公司，广东 东莞 523880）
  • 出版日期:2022-11-15 发布日期:2022-11-15
  • 作者简介:楚世赟（1997— ），男，河南驻马店人，华南理工大学机械与汽车工程学院硕士研究生，主要从事粉尘惰化防爆装置结构优化研究，广东省广州市天河区五山路381号，510640。
  • 基金资助:
    2021 年华南理工大学校级教研教改项目（C9213093）

Optimization research of micro continuous powder feeding of lithium battery dust inerting apparatus

Chu Shiyun1,2, Xie Xiaopeng1,2, Lu Xiaohui1   

  1. (1. School of Mechanical & Automotive Engineering, South China University of Technology, Guangdong Guangzhou 510640, China; 2. Dongguan Villo Technology Inc., Guangdong Dongguan 523880, China)
  • Online:2022-11-15 Published:2022-11-15

摘要： 针对锂电池粉尘惰化装置总是出现物料结拱而无法保证锂电池生产的安全问题，对惰化装置进行优化研究。分析惰化装置系统主要结构及工作原理，建立输送系统料仓仓压数学模型，研究料仓仓压对惰性粉输送卸料率的影响，以此为基础结合搜索优化思想确定出料口尺寸范围；对气动破拱辅助送粉装置进行仿真分析，结合破拱机理优化气动破拱装置。结果表明：根据计算与实验分析结果，料仓仓压越大，惰性粉输送越困难，原惰化装置单次惰性粉添加量最大3.6 kg,而改进出料口尺寸为89 mm左右时可达20 kg；新型双倾斜喷嘴破拱结构相比于单喷嘴破拱效果提升30.9%；优化后的惰化装置未出现送粉中断问题，单次惰性粉添加量可达25 kg，每小时送粉量在0.16～0.37 kg波动。

关键词: 锂电池粉尘, 惰性粉, 粉体输送, 仓压, 气动破拱

Abstract: The optimization research for the inerting device is to solve the problem that the dust inerting device of lithium battery always forms material arch, which can not guarantee the safety of lithium battery production. Based on the analysis of the main structure and working principle of the inerting device system and the established mathematical model of silo pressure of the conveying system, the influence of silo pressure on inert powder conveying and discharging rate was studied. Combined with the influence and search optimization algorithm, the size range of the discharge port was determined. The optimization method of the pneumatic arch-breaking device is derived from the arch-breaking mechanism revealed by the numerically simulated and analyzed of the pneumatic arch-breaking auxiliary powder feeding device. The results showed that according to the calculation and experimental analysis results, the higher the silo pressure is, the more difficult it is to transport inert powder. The maximum amount of inert powder added in a single time is 3.6 kg in the original structure, and the device with the improved outlet size of 89 mm is up to about 20 kg. Compared with the single nozzle, the arch-breaking effect of the new double inclined nozzle is improved by 30.9%. The optimized inerting device has no interruption of powder feeding, and the amount of inert powder can be up to 25 kg per time, and the amount of powder feeding per hour fluctuates between 0.16 kg and 0.37 kg.

Key words: lithium battery dust, inert powder, powder conveying, silopressure, pneumatic arch-breaking