柴油机金属纤维毡微粒捕集器稳态过滤压力损失特性计算研究  

Calculation of steady-state filtration pressure loss of metal fiber felt particle filter for diesel generators

作　　者：刘利[1] 徐嘉锋 李海明 邓浩 LIU Li;XU Jiafeng;LI Haiming;DENG Hao(Unit 61889 of PLA;Army Engineering University)

机构地区：[1]中国人民解放军第61889部队 [2]陆军工程大学

出　　处：《防护工程》2024年第5期56-59,共4页Protective Engineering

摘　　要：柴油发电机组是人防工程重要的发电设备,其工作时排烟系统产生大量的黑烟,不仅污染环境,而且容易导致工程位置暴露,必须加以处理。金属纤维毡微粒捕集器可以有效捕集柴油机尾气中的碳烟颗粒,具有机械强度高、使用寿命长、容尘量大、过滤精度高、阻力损失小、耐高温等优点,已被广泛应用。其捕集器捕集效率和压力损失特性成为近几年研究的热点问题之一。利用数值计算的方法对50 kW柴油发电机组金属纤维毡微粒捕集器不同滤速下金属纤维毡的填充率、纤维直径、厚度等结构参数对稳态过滤压力损失的影响进行了理论计算和分析研究。研究表明,基于在满足过滤效率的前提下尽量降低压力损失的原则,纤维毡填充率在25%、纤维毡厚度在0.5 mm左右、纤维直径在15μm左右是解决金属纤维毡过滤效率和压力损失矛盾的理想结构参数设置。Diesel generator assembly is an important power generation equipment in civil air defence project.During operation,the large amount of black smoke generated by the engine’s exhaust system will not only pollute the environment but also easily expose its location,so must be disposed properly.Metal fiber felt particulate filters can effectively collect carbon smoke particles in diesel engine exhaust,with such advantages as high mechanical strength,long service life,large dust capacity,high filtration fineness,small resistance loss and high temperature endurance.The characteristics of collection efficiency and pressure loss of metal fiber felt particle filters have become one of the hot research topics recently.This article used numerical calculation methods to theoretically calculate and analyze the influence of structural parameters such as filling ratio,fiber diameter,and thickness of 50 kW diesel generator set metal fiber felt on steady-state filtration pressure loss under different filtration rates.The research result shows that,based on the principle of minimizing pressure loss while satisfying filtration efficiency,a metal fiber felt with a filling rate of 25%,a thickness of about 0.5 mm,and a diameter of about 15μm is the ideal structural parameter setting to solve the contradiction between filtration efficiency and pressure loss.

关 键 词：金属纤维毡 压力损失 结构参数 

分 类 号：TM314[电气工程—电机]