300MW磨煤机密封风机节能改造分析

An Analysis of Reform and Effect in Seal Fan System of Pulverizer

针对磨煤机大齿轮密封风机安装在磨煤机保护罩上部,因磨煤机热风管道漏灰严重,造成此处灰尘浓度较大,并引起大齿轮密封风机工作温度高,造成密封风机运行工况恶劣,从而导致大、小齿轮振动、故障停磨的情况。提出了密封风机改造的具体目标和方法,仔细比较了改造前后的数据,证明改造成功,效果显著,保障了磨煤机的安全长时间运行。

The big pinion seal fan of pulverizer installed in the upper protection cover part of pulverizer is in high smoke concentration, which lead to high temperature in the seal fan of pulverizer and the serious working condition of pulverizer and eventually cause the stop of big and small seal fan. This paper puts forward specific target and method of the innovation of pulverizer. It compares the data before and after the innovation carefully and proves the success of the innovation which ensures the pulverizer works for long time safely.